okular/ui/pageview.cpp

/***************************************************************************
 *   Copyright (C) 2004-2005 by Enrico Ros <eros.kde@email.it>             *
 *   Copyright (C) 2004-2006 by Albert Astals Cid <aacid@kde.org>          *
 *   Copyright (C) 2017    Klarälvdalens Datakonsult AB, a KDAB Group      *
 *                         company, info@kdab.com. Work sponsored by the   *
 *                         LiMux project of the city of Munich             *
 *                                                                         *
 *   With portions of code from kpdf/kpdf_pagewidget.cc by:                *
 *     Copyright (C) 2002 by Wilco Greven <greven@kde.org>                 *
 *     Copyright (C) 2003 by Christophe Devriese                           *
 *                           <Christophe.Devriese@student.kuleuven.ac.be>  *
 *     Copyright (C) 2003 by Laurent Montel <montel@kde.org>               *
 *     Copyright (C) 2003 by Dirk Mueller <mueller@kde.org>                *
 *     Copyright (C) 2004 by James Ots <kde@jamesots.com>                  *
 *     Copyright (C) 2011 by Jiri Baum - NICTA <jiri@baum.com.au>          *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 ***************************************************************************/

#include "pageview.h"

// qt/kde includes
#include <qloggingcategory.h>
#include <qcursor.h>
#include <qevent.h>
#include <qimage.h>
#include <qpainter.h>
#include <qtimer.h>
#include <qset.h>
#include <qscrollbar.h>
#include <qtooltip.h>
#include <qapplication.h>
#include <qclipboard.h>
#include <qmenu.h>
#include <QInputDialog>
#include <qdesktopwidget.h>
#include <QDesktopServices>
#include <QMimeDatabase>
#include <QMimeData>
#include <QGestureEvent>

#include <qaction.h>
#include <kactionmenu.h>
#include <kstandardaction.h>
#include <kactioncollection.h>
#include <KLocalizedString>
#include <kselectaction.h>
#include <ktoggleaction.h>
#include <QDebug>
#include <kmessagebox.h>
#include <QIcon>
#include <kurifilter.h>
#include <kstringhandler.h>
#include <ktoolinvocation.h>
#include <krun.h>

// system includes
#include <math.h>
#include <stdlib.h>

// local includes
#include "debug_ui.h"
#include "formwidgets.h"
#include "pageviewutils.h"
#include "pagepainter.h"
#include "core/annotations.h"
#include "annotwindow.h"
#include "guiutils.h"
#include "annotationpopup.h"
#include "pageviewannotator.h"
#include "pageviewmouseannotation.h"
#include "priorities.h"
#include "toolaction.h"
#include "okmenutitle.h"
#ifdef HAVE_SPEECH
#include "tts.h"
#endif
#include "videowidget.h"
#include "core/action.h"
#include "core/area.h"
#include "core/document_p.h"
#include "core/form.h"
#include "core/page.h"
#include "core/page_p.h"
#include "core/misc.h"
#include "core/generator.h"
#include "core/movie.h"
#include "core/audioplayer.h"
#include "core/sourcereference.h"
#include "core/tile.h"
#include "settings.h"
#include "settings_core.h"
#include "url_utils.h"
#include "magnifierview.h"

static const int pageflags = PagePainter::Accessibility | PagePainter::EnhanceLinks |
                       PagePainter::EnhanceImages | PagePainter::Highlights |
                       PagePainter::TextSelection | PagePainter::Annotations;

static const float kZoomValues[] = { 0.12, 0.25, 0.33, 0.50, 0.66, 0.75, 1.00, 1.25, 1.50, 2.00, 4.00, 8.00, 16.00 };

static inline double normClamp( double value, double def )
{
    return ( value < 0.0 || value > 1.0 ) ? def : value;
}

struct TableSelectionPart {
    PageViewItem * item;
    Okular::NormalizedRect rectInItem;
    Okular::NormalizedRect rectInSelection;

    TableSelectionPart(PageViewItem * item_p, const Okular::NormalizedRect &rectInItem_p, const Okular::NormalizedRect &rectInSelection_p);
};

TableSelectionPart::TableSelectionPart(  PageViewItem * item_p, const Okular::NormalizedRect &rectInItem_p, const Okular::NormalizedRect &rectInSelection_p)
    : item ( item_p ), rectInItem (rectInItem_p), rectInSelection (rectInSelection_p)
{
}

// structure used internally by PageView for data storage
class PageViewPrivate
{
public:
    PageViewPrivate( PageView *qq );

    FormWidgetsController* formWidgetsController();
#ifdef HAVE_SPEECH
    OkularTTS* tts();
#endif
    QString selectedText() const;

    // the document, pageviewItems and the 'visible cache'
    PageView *q;
    Okular::Document * document;
    QVector< PageViewItem * > items;
    QLinkedList< PageViewItem * > visibleItems;
    MagnifierView *magnifierView;

    // view layout (columns and continuous in Settings), zoom and mouse
    PageView::ZoomMode zoomMode;
    float zoomFactor;
    QPoint mouseGrabPos;
    QPoint mousePressPos;
    QPoint mouseSelectPos;
    QPoint previousMouseMovePos;
    int mouseMidLastY;
    bool mouseSelecting;
    QRect mouseSelectionRect;
    QColor mouseSelectionColor;
    bool mouseTextSelecting;
    QSet< int > pagesWithTextSelection;
    bool mouseOnRect;
    int mouseMode;
    MouseAnnotation * mouseAnnotation;

    // table selection
    QList<double> tableSelectionCols;
    QList<double> tableSelectionRows;
    QList<TableSelectionPart> tableSelectionParts;
    bool tableDividersGuessed;

    // viewport move
    bool viewportMoveActive;
    QTime viewportMoveTime;
    QPoint viewportMoveDest;
    int lastSourceLocationViewportPageNumber;
    double lastSourceLocationViewportNormalizedX;
    double lastSourceLocationViewportNormalizedY;
    QTimer * viewportMoveTimer;
    int controlWheelAccumulatedDelta;
    // auto scroll
    int scrollIncrement;
    QTimer * autoScrollTimer;
    // annotations
    PageViewAnnotator * annotator;
    //text annotation dialogs list
    QSet< AnnotWindow * > m_annowindows;
    // other stuff
    QTimer * delayResizeEventTimer;
    bool dirtyLayout;
    bool blockViewport;                 // prevents changes to viewport
    bool blockPixmapsRequest;           // prevent pixmap requests
    PageViewMessage * messageWindow;    // in pageviewutils.h
    bool m_formsVisible;
    FormWidgetsController *formsWidgetController;
#ifdef HAVE_SPEECH
    OkularTTS * m_tts;
#endif
    QTimer * refreshTimer;
    QSet<int> refreshPages;

    // bbox state for Trim to Selection mode
    Okular::NormalizedRect trimBoundingBox;

    // infinite resizing loop prevention
    bool verticalScrollBarVisible;
    bool horizontalScrollBarVisible;

    // drag scroll
    QPoint dragScrollVector;
    QTimer dragScrollTimer;

    // left click depress
    QTimer leftClickTimer;

    // actions
    QAction * aRotateClockwise;
    QAction * aRotateCounterClockwise;
    QAction * aRotateOriginal;
    KSelectAction * aPageSizes;
    KActionMenu * aTrimMode;
    KToggleAction * aTrimMargins;
    QAction * aMouseNormal;
    QAction * aMouseSelect;
    QAction * aMouseTextSelect;
    QAction * aMouseTableSelect;
    QAction * aMouseMagnifier;
    KToggleAction * aTrimToSelection;
    KToggleAction * aToggleAnnotator;
    KSelectAction * aZoom;
    QAction * aZoomIn;
    QAction * aZoomOut;
    QAction * aZoomActual;
    KToggleAction * aZoomFitWidth;
    KToggleAction * aZoomFitPage;
    KToggleAction * aZoomAutoFit;
    KActionMenu * aViewMode;
    KToggleAction * aViewContinuous;
    QAction * aPrevAction;
    QAction * aToggleForms;
    QAction * aSpeakDoc;
    QAction * aSpeakPage;
    QAction * aSpeakStop;
    KActionCollection * actionCollection;
    QActionGroup * mouseModeActionGroup;
    QAction * aFitWindowToPage;

    int setting_viewCols;
    bool rtl_Mode;
    // Keep track of whether tablet pen is currently pressed down
    bool penDown;

    // Keep track of mouse over link object
    const Okular::ObjectRect * mouseOverLinkObject;
};

PageViewPrivate::PageViewPrivate( PageView *qq )
    : q( qq )
#ifdef HAVE_SPEECH
    , m_tts( nullptr )
#endif
{
}

FormWidgetsController* PageViewPrivate::formWidgetsController()
{
    if ( !formsWidgetController )
    {
        formsWidgetController = new FormWidgetsController( document );
        QObject::connect( formsWidgetController, SIGNAL( changed( int ) ),
                          q, SLOT( slotFormChanged( int ) ) );
        QObject::connect( formsWidgetController, SIGNAL( action( Okular::Action* ) ),
                          q, SLOT( slotAction( Okular::Action* ) ) );
    }

    return formsWidgetController;
}

#ifdef HAVE_SPEECH
OkularTTS* PageViewPrivate::tts()
{
    if ( !m_tts )
    {
        m_tts = new OkularTTS( q );
        if ( aSpeakStop )
        {
            QObject::connect( m_tts, &OkularTTS::isSpeaking,
                              aSpeakStop, &QAction::setEnabled );
        }
    }

    return m_tts;
}
#endif


/* PageView. What's in this file? -> quick overview.
 * Code weight (in rows) and meaning:
 *  160 - constructor and creating actions plus their connected slots (empty stuff)
 *  70  - DocumentObserver inherited methodes (important)
 *  550 - events: mouse, keyboard, drag
 *  170 - slotRelayoutPages: set contents of the scrollview on continuous/single modes
 *  100 - zoom: zooming pages in different ways, keeping update the toolbar actions, etc..
 *  other misc functions: only slotRequestVisiblePixmaps and pickItemOnPoint noticeable,
 * and many insignificant stuff like this comment :-)
 */
PageView::PageView( QWidget *parent, Okular::Document *document )
    : QAbstractScrollArea( parent )
    , Okular::View( QStringLiteral( "PageView" ) )
{
    // create and initialize private storage structure
    d = new PageViewPrivate( this );
    d->document = document;
    d->aRotateClockwise = nullptr;
    d->aRotateCounterClockwise = nullptr;
    d->aRotateOriginal = nullptr;
    d->aViewMode = nullptr;
    d->zoomMode = PageView::ZoomFitWidth;
    d->zoomFactor = 1.0;
    d->mouseSelecting = false;
    d->mouseTextSelecting = false;
    d->mouseOnRect = false;
    d->mouseMode = Okular::Settings::mouseMode();
    d->mouseAnnotation = new MouseAnnotation( this, document );
    d->tableDividersGuessed = false;
    d->viewportMoveActive = false;
    d->lastSourceLocationViewportPageNumber = -1;
    d->lastSourceLocationViewportNormalizedX = 0.0;
    d->lastSourceLocationViewportNormalizedY = 0.0;
    d->viewportMoveTimer = nullptr;
    d->controlWheelAccumulatedDelta = 0;
    d->scrollIncrement = 0;
    d->autoScrollTimer = nullptr;
    d->annotator = nullptr;
    d->dirtyLayout = false;
    d->blockViewport = false;
    d->blockPixmapsRequest = false;
    d->messageWindow = new PageViewMessage(this);
    d->m_formsVisible = false;
    d->formsWidgetController = nullptr;
#ifdef HAVE_SPEECH
    d->m_tts = nullptr;
#endif
    d->refreshTimer = nullptr;
    d->aRotateClockwise = nullptr;
    d->aRotateCounterClockwise = nullptr;
    d->aRotateOriginal = nullptr;
    d->aPageSizes = nullptr;
    d->aTrimMode = nullptr;
    d->aTrimMargins = nullptr;
    d->aTrimToSelection = nullptr;
    d->aMouseNormal = nullptr;
    d->aMouseSelect = nullptr;
    d->aMouseTextSelect = nullptr;
    d->aToggleAnnotator = nullptr;
    d->aZoomFitWidth = nullptr;
    d->aZoomFitPage = nullptr;
    d->aZoomAutoFit = nullptr;
    d->aViewMode = nullptr;
    d->aViewContinuous = nullptr;
    d->aPrevAction = nullptr;
    d->aToggleForms = nullptr;
    d->aSpeakDoc = nullptr;
    d->aSpeakPage = nullptr;
    d->aSpeakStop = nullptr;
    d->actionCollection = nullptr;
    d->aPageSizes=nullptr;
    d->setting_viewCols = Okular::Settings::viewColumns();
    d->rtl_Mode = Okular::Settings::rtlReadingDirection();
    d->mouseModeActionGroup = nullptr;
    d->penDown = false;
    d->aMouseMagnifier = nullptr;
    d->aFitWindowToPage = nullptr;
    d->trimBoundingBox = Okular::NormalizedRect(); // Null box

    switch( Okular::Settings::zoomMode() )
    {
        case 0:
        {
            d->zoomFactor = 1;
            d->zoomMode = PageView::ZoomFixed;
            break;
        }
        case 1:
        {
            d->zoomMode = PageView::ZoomFitWidth;
            break;
        }
        case 2:
        {
            d->zoomMode = PageView::ZoomFitPage;
            break;
        }
        case 3:
        {
            d->zoomMode = PageView::ZoomFitAuto;
            break;
        }
    }

    d->delayResizeEventTimer = new QTimer( this );
    d->delayResizeEventTimer->setSingleShot( true );
    connect( d->delayResizeEventTimer, &QTimer::timeout, this, &PageView::delayedResizeEvent );

    setFrameStyle(QFrame::NoFrame);

    setAttribute( Qt::WA_StaticContents );

    setObjectName( QStringLiteral( "okular::pageView" ) );

    // viewport setup: setup focus, and track mouse
    viewport()->setFocusProxy( this );
    viewport()->setFocusPolicy( Qt::StrongFocus );
    viewport()->setAttribute( Qt::WA_OpaquePaintEvent );
    viewport()->setAttribute( Qt::WA_NoSystemBackground );
    viewport()->setMouseTracking( true );
    viewport()->setAutoFillBackground( false );
    // the apparently "magic" value of 20 is the same used internally in QScrollArea
    verticalScrollBar()->setCursor( Qt::ArrowCursor );
    verticalScrollBar()->setSingleStep( 20 );
    horizontalScrollBar()->setCursor( Qt::ArrowCursor );
    horizontalScrollBar()->setSingleStep( 20 );

    // connect the padding of the viewport to pixmaps requests
    connect(horizontalScrollBar(), &QAbstractSlider::valueChanged, this, &PageView::slotRequestVisiblePixmaps);
    connect(verticalScrollBar(), &QAbstractSlider::valueChanged, this, &PageView::slotRequestVisiblePixmaps);
    connect( &d->dragScrollTimer, &QTimer::timeout, this, &PageView::slotDragScroll );

    d->leftClickTimer.setSingleShot( true );
    connect( &d->leftClickTimer, &QTimer::timeout, this, &PageView::slotShowSizeAllCursor );

    // set a corner button to resize the view to the page size
//    QPushButton * resizeButton = new QPushButton( viewport() );
//    resizeButton->setPixmap( SmallIcon("crop") );
//    setCornerWidget( resizeButton );
//    resizeButton->setEnabled( false );
    // connect(...);
    setAttribute( Qt::WA_InputMethodEnabled, true );

    // Grab pinch gestures to zoom and rotate the view
    grabGesture(Qt::PinchGesture);

    d->magnifierView = new MagnifierView(document, this);
    d->magnifierView->hide();
    d->magnifierView->setGeometry(0, 0, 351, 201); // TODO: more dynamic?

    connect(document, &Okular::Document::processMovieAction, this, &PageView::slotProcessMovieAction);
    connect(document, &Okular::Document::processRenditionAction, this, &PageView::slotProcessRenditionAction);

    // schedule the welcome message
    QMetaObject::invokeMethod(this, "slotShowWelcome", Qt::QueuedConnection);
}

PageView::~PageView()
{
#ifdef HAVE_SPEECH
    if ( d->m_tts )
        d->m_tts->stopAllSpeechs();
#endif

    delete d->mouseAnnotation;

    // delete the local storage structure

    // We need to assign it to a different list otherwise slotAnnotationWindowDestroyed
    // will bite us and clear d->m_annowindows
    QSet< AnnotWindow * > annowindows = d->m_annowindows;
    d->m_annowindows.clear();
    qDeleteAll( annowindows );

    // delete all widgets
    qDeleteAll( d->items );
    delete d->formsWidgetController;
    d->document->removeObserver( this );
    delete d;
}

void PageView::setupBaseActions( KActionCollection * ac )
{
    d->actionCollection = ac;

    // Zoom actions ( higher scales takes lots of memory! )
    d->aZoom  = new KSelectAction(QIcon::fromTheme( QStringLiteral("page-zoom") ), i18n("Zoom"), this);
    ac->addAction(QStringLiteral("zoom_to"), d->aZoom );
    d->aZoom->setEditable( true );
    d->aZoom->setMaxComboViewCount( 14 );
    connect( d->aZoom, SIGNAL(triggered(QAction*)), this, SLOT(slotZoom()) );
    updateZoomText();

    d->aZoomIn = KStandardAction::zoomIn( this, SLOT(slotZoomIn()), ac );

    d->aZoomOut = KStandardAction::zoomOut( this, SLOT(slotZoomOut()), ac );

    d->aZoomActual = KStandardAction::actualSize( this, &PageView::slotZoomActual, ac );
    d->aZoomActual->setText(i18n("Zoom to 100%"));
}

void PageView::setupViewerActions( KActionCollection * ac )
{
    d->actionCollection = ac;

    ac->setDefaultShortcut(d->aZoomIn, QKeySequence(Qt::CTRL + Qt::ALT + Qt::Key_Plus));
    ac->setDefaultShortcut(d->aZoomOut, QKeySequence(Qt::CTRL + Qt::ALT + Qt::Key_Minus));

    // orientation menu actions
    d->aRotateClockwise = new QAction( QIcon::fromTheme( QStringLiteral("object-rotate-right") ), i18n( "Rotate &Right" ), this );
    d->aRotateClockwise->setIconText( i18nc( "Rotate right", "Right" ) );
    ac->addAction( QStringLiteral("view_orientation_rotate_cw"), d->aRotateClockwise );
    d->aRotateClockwise->setEnabled( false );
    connect( d->aRotateClockwise, &QAction::triggered, this, &PageView::slotRotateClockwise );
    d->aRotateCounterClockwise = new QAction( QIcon::fromTheme( QStringLiteral("object-rotate-left") ), i18n( "Rotate &Left" ), this );
    d->aRotateCounterClockwise->setIconText( i18nc( "Rotate left", "Left" ) );
    ac->addAction( QStringLiteral("view_orientation_rotate_ccw"), d->aRotateCounterClockwise );
    d->aRotateCounterClockwise->setEnabled( false );
    connect( d->aRotateCounterClockwise, &QAction::triggered, this, &PageView::slotRotateCounterClockwise );
    d->aRotateOriginal = new QAction( i18n( "Original Orientation" ), this );
    ac->addAction( QStringLiteral("view_orientation_original"), d->aRotateOriginal );
    d->aRotateOriginal->setEnabled( false );
    connect( d->aRotateOriginal, &QAction::triggered, this, &PageView::slotRotateOriginal );

    d->aPageSizes = new KSelectAction(i18n("&Page Size"), this);
    ac->addAction(QStringLiteral("view_pagesizes"), d->aPageSizes);
    d->aPageSizes->setEnabled( false );

    connect( d->aPageSizes , SIGNAL(triggered(int)),
         this, SLOT(slotPageSizes(int)) );

    // Trim View actions
    d->aTrimMode = new KActionMenu(i18n( "&Trim View" ), this );
    d->aTrimMode->setDelayed( false );
    ac->addAction(QStringLiteral("view_trim_mode"), d->aTrimMode );

    d->aTrimMargins  = new KToggleAction(QIcon::fromTheme( QStringLiteral("trim-margins") ), i18n( "&Trim Margins" ), d->aTrimMode->menu() );
    d->aTrimMode->addAction( d->aTrimMargins  );
    ac->addAction( QStringLiteral("view_trim_margins"), d->aTrimMargins  );
    d->aTrimMargins->setData( qVariantFromValue( (int)Okular::Settings::EnumTrimMode::Margins ) );
    connect( d->aTrimMargins, &QAction::toggled, this, &PageView::slotTrimMarginsToggled );
    d->aTrimMargins->setChecked( Okular::Settings::trimMargins() );

    d->aTrimToSelection  = new KToggleAction(QIcon::fromTheme( QStringLiteral("trim-to-selection") ), i18n( "Trim To &Selection" ), d->aTrimMode->menu() );
    d->aTrimMode->addAction( d->aTrimToSelection);
    ac->addAction( QStringLiteral("view_trim_selection"), d->aTrimToSelection);
    d->aTrimToSelection->setData( qVariantFromValue( (int)Okular::Settings::EnumTrimMode::Selection ) );
    connect( d->aTrimToSelection, &QAction::toggled, this, &PageView::slotTrimToSelectionToggled );

    d->aZoomFitWidth  = new KToggleAction(QIcon::fromTheme( QStringLiteral("zoom-fit-width") ), i18n("Fit &Width"), this);
    ac->addAction(QStringLiteral("view_fit_to_width"), d->aZoomFitWidth );
    connect( d->aZoomFitWidth, &QAction::toggled, this, &PageView::slotFitToWidthToggled );

    d->aZoomFitPage  = new KToggleAction(QIcon::fromTheme( QStringLiteral("zoom-fit-best") ), i18n("Fit &Page"), this);
    ac->addAction(QStringLiteral("view_fit_to_page"), d->aZoomFitPage );
    connect( d->aZoomFitPage, &QAction::toggled, this, &PageView::slotFitToPageToggled );

    d->aZoomAutoFit  = new KToggleAction(QIcon::fromTheme( QStringLiteral("zoom-fit-best") ), i18n("&Auto Fit"), this);
    ac->addAction(QStringLiteral("view_auto_fit"), d->aZoomAutoFit );
    connect( d->aZoomAutoFit, &QAction::toggled, this, &PageView::slotAutoFitToggled );

    d->aFitWindowToPage = new QAction(QIcon::fromTheme( QStringLiteral("zoom-fit-width") ), i18n("Fit Wi&ndow to Page"), this);
    d->aFitWindowToPage->setEnabled( Okular::Settings::viewMode() == (int)Okular::Settings::EnumViewMode::Single );
    ac->setDefaultShortcut(d->aFitWindowToPage, QKeySequence(Qt::CTRL + Qt::Key_J) );
    ac->addAction( QStringLiteral("fit_window_to_page"), d->aFitWindowToPage );
    connect( d->aFitWindowToPage, &QAction::triggered, this, &PageView::slotFitWindowToPage );

    // View-Layout actions
    d->aViewMode = new KActionMenu( QIcon::fromTheme( QStringLiteral("view-split-left-right") ), i18n( "&View Mode" ), this );
    d->aViewMode->setDelayed( false );
#define ADD_VIEWMODE_ACTION( text, name, id ) \
do { \
    QAction *vm = new QAction( text, this ); \
    vm->setCheckable( true ); \
    vm->setData( qVariantFromValue( id ) ); \
    d->aViewMode->addAction( vm ); \
    ac->addAction( QStringLiteral(name), vm ); \
    vmGroup->addAction( vm ); \
} while( 0 )
    ac->addAction(QStringLiteral("view_render_mode"), d->aViewMode );
    QActionGroup *vmGroup = new QActionGroup( this ); //d->aViewMode->menu() );
    ADD_VIEWMODE_ACTION( i18n( "Single Page" ), "view_render_mode_single", (int)Okular::Settings::EnumViewMode::Single );
    ADD_VIEWMODE_ACTION( i18n( "Facing Pages" ), "view_render_mode_facing", (int)Okular::Settings::EnumViewMode::Facing );
    ADD_VIEWMODE_ACTION( i18n( "Facing Pages (Center First Page)" ), "view_render_mode_facing_center_first", (int)Okular::Settings::EnumViewMode::FacingFirstCentered );
    ADD_VIEWMODE_ACTION( i18n( "Overview" ), "view_render_mode_overview", (int)Okular::Settings::EnumViewMode::Summary );
    const QList<QAction *> viewModeActions = d->aViewMode->menu()->actions();
    foreach(QAction *viewModeAction, viewModeActions)
    {
        if (viewModeAction->data().toInt() == Okular::Settings::viewMode())
        {
            viewModeAction->setChecked( true );
        }
    }
    connect( vmGroup, &QActionGroup::triggered, this, &PageView::slotViewMode );
#undef ADD_VIEWMODE_ACTION

    d->aViewContinuous  = new KToggleAction(QIcon::fromTheme( QStringLiteral("view-list-text") ), i18n("&Continuous"), this);
    ac->addAction(QStringLiteral("view_continuous"), d->aViewContinuous );
    connect( d->aViewContinuous, &QAction::toggled, this, &PageView::slotContinuousToggled );
    d->aViewContinuous->setChecked( Okular::Settings::viewContinuous() );

    // Mouse mode actions for viewer mode
    d->mouseModeActionGroup = new QActionGroup( this );
    d->mouseModeActionGroup->setExclusive( true );
    d->aMouseNormal  = new QAction( QIcon::fromTheme( QStringLiteral("transform-browse") ), i18n( "&Browse" ), this );
    ac->addAction(QStringLiteral("mouse_drag"), d->aMouseNormal );
    connect( d->aMouseNormal, &QAction::triggered, this, &PageView::slotSetMouseNormal );
    d->aMouseNormal->setCheckable( true );
    ac->setDefaultShortcut(d->aMouseNormal, QKeySequence(Qt::CTRL + Qt::Key_1));
    d->aMouseNormal->setActionGroup( d->mouseModeActionGroup );
    d->aMouseNormal->setChecked( Okular::Settings::mouseMode() == Okular::Settings::EnumMouseMode::Browse );

    QAction * mz  = new QAction(QIcon::fromTheme( QStringLiteral("page-zoom") ), i18n("&Zoom"), this);
    ac->addAction(QStringLiteral("mouse_zoom"), mz );
    connect( mz, &QAction::triggered, this, &PageView::slotSetMouseZoom );
    mz->setCheckable( true );
    ac->setDefaultShortcut(mz, QKeySequence(Qt::CTRL + Qt::Key_2));
    mz->setActionGroup( d->mouseModeActionGroup );
    mz->setChecked( Okular::Settings::mouseMode() == Okular::Settings::EnumMouseMode::Zoom );

    QAction * aToggleChangeColors  = new QAction(i18n("&Toggle Change Colors"), this);
    ac->addAction(QStringLiteral("toggle_change_colors"), aToggleChangeColors );
    connect( aToggleChangeColors, &QAction::triggered, this, &PageView::slotToggleChangeColors );
}

// WARNING: 'setupViewerActions' must have been called before this method
void PageView::setupActions( KActionCollection * ac )
{
    d->actionCollection = ac;

    ac->setDefaultShortcuts(d->aZoomIn, KStandardShortcut::zoomIn());
    ac->setDefaultShortcuts(d->aZoomOut, KStandardShortcut::zoomOut());

    // Mouse-Mode actions
    d->aMouseSelect  = new QAction(QIcon::fromTheme( QStringLiteral("select-rectangular") ), i18n("Area &Selection"), this);
    ac->addAction(QStringLiteral("mouse_select"), d->aMouseSelect );
    connect( d->aMouseSelect, &QAction::triggered, this, &PageView::slotSetMouseSelect );
    d->aMouseSelect->setCheckable( true );
    ac->setDefaultShortcut(d->aMouseSelect, Qt::CTRL + Qt::Key_3);

    d->aMouseSelect->setActionGroup( d->mouseModeActionGroup );
    d->aMouseSelect->setChecked( Okular::Settings::mouseMode() == Okular::Settings::EnumMouseMode::RectSelect );

    d->aMouseTextSelect  = new QAction(QIcon::fromTheme( QStringLiteral("edit-select-text") ), i18n("&Text Selection"), this);
    ac->addAction(QStringLiteral("mouse_textselect"), d->aMouseTextSelect );
    connect( d->aMouseTextSelect, &QAction::triggered, this, &PageView::slotSetMouseTextSelect );
    d->aMouseTextSelect->setCheckable( true );
    ac->setDefaultShortcut(d->aMouseTextSelect, Qt::CTRL + Qt::Key_4);
    d->aMouseTextSelect->setActionGroup( d->mouseModeActionGroup );
    d->aMouseTextSelect->setChecked( Okular::Settings::mouseMode() == Okular::Settings::EnumMouseMode::TextSelect );

    d->aMouseTableSelect  = new QAction(QIcon::fromTheme( QStringLiteral("table") ), i18n("T&able Selection"), this);
    ac->addAction(QStringLiteral("mouse_tableselect"), d->aMouseTableSelect );
    connect( d->aMouseTableSelect, &QAction::triggered, this, &PageView::slotSetMouseTableSelect );
    d->aMouseTableSelect->setCheckable( true );
    ac->setDefaultShortcut(d->aMouseTableSelect, Qt::CTRL + Qt::Key_5);
    d->aMouseTableSelect->setActionGroup( d->mouseModeActionGroup );
    d->aMouseTableSelect->setChecked( Okular::Settings::mouseMode() == Okular::Settings::EnumMouseMode::TableSelect );

    d->aMouseMagnifier = new QAction(QIcon::fromTheme( QStringLiteral("document-preview") ), i18n("&Magnifier"), this);
    ac->addAction(QStringLiteral("mouse_magnifier"), d->aMouseMagnifier );
    connect( d->aMouseMagnifier, &QAction::triggered, this, &PageView::slotSetMouseMagnifier );
    d->aMouseMagnifier->setCheckable( true );
    ac->setDefaultShortcut(d->aMouseMagnifier, Qt::CTRL + Qt::Key_6);
    d->aMouseMagnifier->setActionGroup( d->mouseModeActionGroup );
    d->aMouseMagnifier->setChecked( Okular::Settings::mouseMode() == Okular::Settings::EnumMouseMode::Magnifier );

    d->aToggleAnnotator  = new KToggleAction(QIcon::fromTheme( QStringLiteral("draw-freehand") ), i18n("&Review"), this);
    ac->addAction(QStringLiteral("mouse_toggle_annotate"), d->aToggleAnnotator );
    d->aToggleAnnotator->setCheckable( true );
    connect( d->aToggleAnnotator, &QAction::toggled, this, &PageView::slotToggleAnnotator );
    ac->setDefaultShortcut(d->aToggleAnnotator, Qt::Key_F6);

    ToolAction *ta = new ToolAction( this );
    ac->addAction( QStringLiteral("mouse_selecttools"), ta );
    ta->addAction( d->aMouseTextSelect );
    ta->addAction( d->aMouseSelect );
    ta->addAction( d->aMouseTableSelect );

    // speak actions
#ifdef HAVE_SPEECH
    d->aSpeakDoc = new QAction( QIcon::fromTheme( QStringLiteral("text-speak") ), i18n( "Speak Whole Document" ), this );
    ac->addAction( QStringLiteral("speak_document"), d->aSpeakDoc );
    d->aSpeakDoc->setEnabled( false );
    connect( d->aSpeakDoc, &QAction::triggered, this, &PageView::slotSpeakDocument );

    d->aSpeakPage = new QAction( QIcon::fromTheme( QStringLiteral("text-speak") ), i18n( "Speak Current Page" ), this );
    ac->addAction( QStringLiteral("speak_current_page"), d->aSpeakPage );
    d->aSpeakPage->setEnabled( false );
    connect( d->aSpeakPage, &QAction::triggered, this, &PageView::slotSpeakCurrentPage );

    d->aSpeakStop = new QAction( QIcon::fromTheme( QStringLiteral("media-playback-stop") ), i18n( "Stop Speaking" ), this );
    ac->addAction( QStringLiteral("speak_stop_all"), d->aSpeakStop );
    d->aSpeakStop->setEnabled( false );
    connect( d->aSpeakStop, &QAction::triggered, this, &PageView::slotStopSpeaks );
#else
    d->aSpeakDoc = 0;
    d->aSpeakPage = 0;
    d->aSpeakStop = 0;
#endif

    // Other actions
    QAction * su  = new QAction(i18n("Scroll Up"), this);
    ac->addAction(QStringLiteral("view_scroll_up"), su );
    connect( su, &QAction::triggered, this, &PageView::slotAutoScrollUp );
    ac->setDefaultShortcut(su, QKeySequence(Qt::SHIFT + Qt::Key_Up));
    addAction(su);

    QAction * sd  = new QAction(i18n("Scroll Down"), this);
    ac->addAction(QStringLiteral("view_scroll_down"), sd );
    connect( sd, &QAction::triggered, this, &PageView::slotAutoScrollDown );
    ac->setDefaultShortcut(sd, QKeySequence(Qt::SHIFT + Qt::Key_Down));
    addAction(sd);

    QAction * spu = new QAction(i18n("Scroll Page Up"), this);
    ac->addAction( QStringLiteral("view_scroll_page_up"), spu );
    connect( spu, &QAction::triggered, this, &PageView::slotScrollUp );
    ac->setDefaultShortcut(spu, QKeySequence(Qt::SHIFT + Qt::Key_Space));
    addAction( spu );

    QAction * spd = new QAction(i18n("Scroll Page Down"), this);
    ac->addAction( QStringLiteral("view_scroll_page_down"), spd );
    connect( spd, &QAction::triggered, this, &PageView::slotScrollDown );
    ac->setDefaultShortcut(spd, QKeySequence(Qt::Key_Space));
    addAction( spd );

    d->aToggleForms = new QAction( this );
    ac->addAction( QStringLiteral("view_toggle_forms"), d->aToggleForms );
    connect( d->aToggleForms, &QAction::triggered, this, &PageView::slotToggleForms );
    d->aToggleForms->setEnabled( false );
    toggleFormWidgets( false );

    // Setup undo and redo actions
    QAction *kundo = KStandardAction::create( KStandardAction::Undo, d->document, SLOT(undo()), ac );
    QAction *kredo = KStandardAction::create( KStandardAction::Redo, d->document, SLOT(redo()), ac );
    connect(d->document, &Okular::Document::canUndoChanged, kundo, &QAction::setEnabled);
    connect(d->document, &Okular::Document::canRedoChanged, kredo, &QAction::setEnabled);
    kundo->setEnabled(false);
    kredo->setEnabled(false);
}

bool PageView::canFitPageWidth() const
{
    return Okular::Settings::viewMode() != Okular::Settings::EnumViewMode::Single || d->zoomMode != ZoomFitWidth;
}

void PageView::fitPageWidth( int page )
{
    // zoom: Fit Width, columns: 1. setActions + relayout + setPage + update
    d->zoomMode = ZoomFitWidth;
    Okular::Settings::setViewMode( 0 );
    d->aZoomFitWidth->setChecked( true );
    d->aZoomFitPage->setChecked( false );
    d->aZoomAutoFit->setChecked( false );
    d->aViewMode->menu()->actions().at( 0 )->setChecked( true );
    viewport()->setUpdatesEnabled( false );
    slotRelayoutPages();
    viewport()->setUpdatesEnabled( true );
    d->document->setViewportPage( page );
    updateZoomText();
    setFocus();
}

void PageView::openAnnotationWindow( Okular::Annotation * annotation, int pageNumber )
{
    if ( !annotation )
        return;

    // find the annot window
    AnnotWindow* existWindow = nullptr;
    foreach(AnnotWindow *aw, d->m_annowindows)
    {
        if ( aw->annotation() == annotation )
        {
            existWindow = aw;
            break;
        }
    }

    if ( existWindow == nullptr )
    {
        existWindow = new AnnotWindow( this, annotation, d->document, pageNumber );
        connect(existWindow, &QObject::destroyed, this, &PageView::slotAnnotationWindowDestroyed);

        d->m_annowindows << existWindow;
    } else {
        existWindow->raise();
        existWindow->findChild<KTextEdit *>()->setFocus();
    }

    existWindow->show();
}

void PageView::slotAnnotationWindowDestroyed( QObject * window )
{
    d->m_annowindows.remove( static_cast<AnnotWindow*>( window ) );
}

void PageView::displayMessage( const QString & message, const QString & details, PageViewMessage::Icon icon, int duration )
{
    if ( !Okular::Settings::showOSD() )
    {
        if (icon == PageViewMessage::Error)
        {
            if ( !details.isEmpty() )
                KMessageBox::detailedError( this, message, details );
            else
                KMessageBox::error( this, message );
        }
        return;
    }

    // hide messageWindow if string is empty
    if ( message.isEmpty() )
        return d->messageWindow->hide();

    // display message (duration is length dependent)
    if (duration==-1)
    {
        duration = 500 + 100 * message.length();
        if ( !details.isEmpty() )
            duration += 500 + 100 * details.length();
    }
    d->messageWindow->display( message, details, icon, duration );
}

void PageView::reparseConfig()
{
    // set the scroll bars policies
    Qt::ScrollBarPolicy scrollBarMode = Okular::Settings::showScrollBars() ?
        Qt::ScrollBarAsNeeded : Qt::ScrollBarAlwaysOff;
    if ( horizontalScrollBarPolicy() != scrollBarMode )
    {
        setHorizontalScrollBarPolicy( scrollBarMode );
        setVerticalScrollBarPolicy( scrollBarMode );
    }

    if ( Okular::Settings::viewMode() == Okular::Settings::EnumViewMode::Summary &&
         ( (int)Okular::Settings::viewColumns() != d->setting_viewCols ) )
    {
        d->setting_viewCols = Okular::Settings::viewColumns();

        slotRelayoutPages();
    }

    if (Okular::Settings::rtlReadingDirection() != d->rtl_Mode )
    {
        d->rtl_Mode = Okular::Settings::rtlReadingDirection();
        slotRelayoutPages();
    }

    updatePageStep();

    if ( d->annotator )
    {
        d->annotator->setEnabled( false );
        d->annotator->reparseConfig();
        if ( d->aToggleAnnotator->isChecked() )
            slotToggleAnnotator( true );
    }

    // Something like invert colors may have changed
    // As we don't have a way to find out the old value
    // We just update the viewport, this shouldn't be that bad
    // since it's just a repaint of pixmaps we already have
    viewport()->update();
}

KActionCollection *PageView::actionCollection() const
{
    return d->actionCollection;
}

QAction *PageView::toggleFormsAction() const
{
    return d->aToggleForms;
}

int PageView::contentAreaWidth() const
{
    return horizontalScrollBar()->maximum() + viewport()->width();
}

int PageView::contentAreaHeight() const
{
    return verticalScrollBar()->maximum() + viewport()->height();
}

QPoint PageView::contentAreaPosition() const
{
    return QPoint( horizontalScrollBar()->value(), verticalScrollBar()->value() );
}

QPoint PageView::contentAreaPoint( const QPoint & pos ) const
{
    return pos + contentAreaPosition();
}

QPointF PageView::contentAreaPoint( const QPointF & pos ) const
{
    return pos + contentAreaPosition();
}

QString PageViewPrivate::selectedText() const
{
    if ( pagesWithTextSelection.isEmpty() )
        return QString();

    QString text;
    QList< int > selpages = pagesWithTextSelection.toList();
    std::sort(selpages.begin(), selpages.end());
    const Okular::Page * pg = nullptr;
    if ( selpages.count() == 1 )
    {
        pg = document->page( selpages.first() );
        text.append( pg->text( pg->textSelection(), Okular::TextPage::CentralPixelTextAreaInclusionBehaviour ) );
    }
    else
    {
        pg = document->page( selpages.first() );
        text.append( pg->text( pg->textSelection(), Okular::TextPage::CentralPixelTextAreaInclusionBehaviour ) );
        int end = selpages.count() - 1;
        for( int i = 1; i < end; ++i )
        {
            pg = document->page( selpages.at( i ) );
            text.append( pg->text( nullptr, Okular::TextPage::CentralPixelTextAreaInclusionBehaviour ) );
        }
        pg = document->page( selpages.last() );
        text.append( pg->text( pg->textSelection(), Okular::TextPage::CentralPixelTextAreaInclusionBehaviour ) );
    }
    return text;
}

void PageView::copyTextSelection() const
{
    const QString text = d->selectedText();
    if ( !text.isEmpty() )
    {
        QClipboard *cb = QApplication::clipboard();
        cb->setText( text, QClipboard::Clipboard );
    }
}

void PageView::selectAll()
{
    for ( const PageViewItem * item : qAsConst( d->items ) )
    {
        Okular::RegularAreaRect * area = textSelectionForItem( item );
        d->pagesWithTextSelection.insert( item->pageNumber() );
        d->document->setPageTextSelection( item->pageNumber(), area, palette().color( QPalette::Active, QPalette::Highlight ) );
    }
}

void PageView::createAnnotationsVideoWidgets(PageViewItem *item, const QLinkedList< Okular::Annotation * > &annotations)
{
    qDeleteAll( item->videoWidgets() );
    item->videoWidgets().clear();

    for ( Okular::Annotation * a : annotations )
    {
        if ( a->subType() == Okular::Annotation::AMovie )
        {
            Okular::MovieAnnotation * movieAnn = static_cast< Okular::MovieAnnotation * >( a );
            VideoWidget * vw = new VideoWidget( movieAnn, movieAnn->movie(), d->document, viewport() );
            item->videoWidgets().insert( movieAnn->movie(), vw );
            vw->pageInitialized();
        }
        else if ( a->subType() == Okular::Annotation::ARichMedia )
        {
            Okular::RichMediaAnnotation * richMediaAnn = static_cast< Okular::RichMediaAnnotation * >( a );
            VideoWidget * vw = new VideoWidget( richMediaAnn, richMediaAnn->movie(), d->document, viewport() );
            item->videoWidgets().insert( richMediaAnn->movie(), vw );
            vw->pageInitialized();
        }
        else if ( a->subType() == Okular::Annotation::AScreen )
        {
            const Okular::ScreenAnnotation * screenAnn = static_cast< Okular::ScreenAnnotation * >( a );
            Okular::Movie *movie = GuiUtils::renditionMovieFromScreenAnnotation( screenAnn );
            if ( movie )
            {
                VideoWidget * vw = new VideoWidget( screenAnn, movie, d->document, viewport() );
                item->videoWidgets().insert( movie, vw );
                vw->pageInitialized();
            }
        }
    }
}

//BEGIN DocumentObserver inherited methods
void PageView::notifySetup( const QVector< Okular::Page * > & pageSet, int setupFlags )
{
    bool documentChanged = setupFlags & Okular::DocumentObserver::DocumentChanged;
    const bool allownotes = d->document->isAllowed( Okular::AllowNotes );
    const bool allowfillforms = d->document->isAllowed( Okular::AllowFillForms );

    // allownotes may have changed
    if ( d->aToggleAnnotator )
        d->aToggleAnnotator->setEnabled( allownotes );

    // reuse current pages if nothing new
    if ( ( pageSet.count() == d->items.count() ) && !documentChanged && !( setupFlags & Okular::DocumentObserver::NewLayoutForPages ) )
    {
        int count = pageSet.count();
        for ( int i = 0; (i < count) && !documentChanged; i++ )
        {
            if ( (int)pageSet[i]->number() != d->items[i]->pageNumber() )
            {
                documentChanged = true;
            }
            else
            {
                // even if the document has not changed, allowfillforms may have
                // changed, so update all fields' "canBeFilled" flag
                foreach ( FormWidgetIface * w, d->items[i]->formWidgets() )
                    w->setCanBeFilled( allowfillforms );
            }
        }

        if ( !documentChanged )
        {
            if ( setupFlags & Okular::DocumentObserver::UrlChanged )
            {
                // Here with UrlChanged and no document changed it means we
                // need to update all the Annotation* and Form* otherwise
                // they still point to the old document ones, luckily the old ones are still
                // around so we can look for the new ones using unique ids, etc
                d->mouseAnnotation->updateAnnotationPointers();

                foreach(AnnotWindow *aw, d->m_annowindows)
                {
                    Okular::Annotation *newA = d->document->page( aw->pageNumber() )->annotation( aw->annotation()->uniqueName() );
                    aw->updateAnnotation( newA );
                }

                const QRect viewportRect( horizontalScrollBar()->value(), verticalScrollBar()->value(),
                                          viewport()->width(), viewport()->height() );
                for ( int i = 0; i < count; i++ )
                {
                    PageViewItem *item = d->items[i];
                    const QSet<FormWidgetIface*> fws = item->formWidgets();
                    foreach ( FormWidgetIface * w, fws )
                    {
                        Okular::FormField *f = Okular::PagePrivate::findEquivalentForm( d->document->page( i ), w->formField() );
                        if (f)
                        {
                            w->setFormField( f );
                        }
                        else
                        {
                            qWarning() << "Lost form field on document save, something is wrong";
                            item->formWidgets().remove(w);
                            delete w;
                        }
                    }

                    // For the video widgets we don't really care about reusing them since they don't contain much info so just
                    // create them again
                    createAnnotationsVideoWidgets( item, pageSet[i]->annotations() );
                    Q_FOREACH ( VideoWidget *vw, item->videoWidgets() )
                    {
                        const Okular::NormalizedRect r = vw->normGeometry();
                        vw->setGeometry(
                            qRound( item->uncroppedGeometry().left() + item->uncroppedWidth() * r.left ) + 1 - viewportRect.left(),
                            qRound( item->uncroppedGeometry().top() + item->uncroppedHeight() * r.top ) + 1 - viewportRect.top(),
                            qRound( fabs( r.right - r.left ) * item->uncroppedGeometry().width() ),
                            qRound( fabs( r.bottom - r.top ) * item->uncroppedGeometry().height() ) );

                        // Workaround, otherwise the size somehow gets lost
                        vw->show();
                        vw->hide();
                    }

                }
            }

            return;
        }
    }

    // mouseAnnotation must not access our PageViewItem widgets any longer
    d->mouseAnnotation->reset();

    // delete all widgets (one for each page in pageSet)
    qDeleteAll( d->items );
    d->items.clear();
    d->visibleItems.clear();
    d->pagesWithTextSelection.clear();
    toggleFormWidgets( false );
    if ( d->formsWidgetController )
        d->formsWidgetController->dropRadioButtons();

    bool haspages = !pageSet.isEmpty();
    bool hasformwidgets = false;
    // create children widgets
    for ( const Okular::Page * page : pageSet )
    {
        PageViewItem * item = new PageViewItem( page );
        d->items.push_back( item );
#ifdef PAGEVIEW_DEBUG
        qCDebug(OkularUiDebug).nospace() << "cropped geom for " << d->items.last()->pageNumber() << " is " << d->items.last()->croppedGeometry();
#endif
        const QLinkedList< Okular::FormField * > pageFields = page->formFields();
        for ( Okular::FormField * ff : pageFields )
        {
            FormWidgetIface * w = FormWidgetFactory::createWidget( ff, viewport() );
            if ( w )
            {
                w->setPageItem( item );
                w->setFormWidgetsController( d->formWidgetsController() );
                w->setVisibility( false );
                w->setCanBeFilled( allowfillforms );
                item->formWidgets().insert( w );
                hasformwidgets = true;
            }
        }

        createAnnotationsVideoWidgets( item, page->annotations() );
    }

    // invalidate layout so relayout/repaint will happen on next viewport change
    if ( haspages )
    {
        // We do a delayed call to slotRelayoutPages but also set the dirtyLayout
        // because we might end up in notifyViewportChanged while slotRelayoutPages
        // has not been done and we don't want that to happen
        d->dirtyLayout = true;
        QMetaObject::invokeMethod(this, "slotRelayoutPages", Qt::QueuedConnection);
    }
    else
    {
        // update the mouse cursor when closing because we may have close through a link and
        // want the cursor to come back to the normal cursor
        updateCursor();
        // then, make the message window and scrollbars disappear, and trigger a repaint
        d->messageWindow->hide();
        resizeContentArea( QSize( 0,0 ) );
        viewport()->update(); // when there is no change to the scrollbars, no repaint would
                              // be done and the old document would still be shown
    }

    // OSD to display pages
    if ( documentChanged && pageSet.count() > 0 && Okular::Settings::showOSD() )
        d->messageWindow->display(
            i18np(" Loaded a one-page document.",
                 " Loaded a %1-page document.",
                 pageSet.count() ),
            QString(),
            PageViewMessage::Info, 4000 );

    updateActionState( haspages, documentChanged, hasformwidgets );

    // We need to assign it to a different list otherwise slotAnnotationWindowDestroyed
    // will bite us and clear d->m_annowindows
    QSet< AnnotWindow * > annowindows = d->m_annowindows;
    d->m_annowindows.clear();
    qDeleteAll( annowindows );

    selectionClear();
}

void PageView::updateActionState( bool haspages, bool documentChanged, bool hasformwidgets )
{
    if ( d->aPageSizes )
    { // may be null if dummy mode is on
        bool pageSizes = d->document->supportsPageSizes();
        d->aPageSizes->setEnabled( pageSizes );
        // set the new page sizes:
        // - if the generator supports them
        // - if the document changed
        if ( pageSizes && documentChanged )
        {
            QStringList items;
            foreach ( const Okular::PageSize &p, d->document->pageSizes() )
                items.append( p.name() );
            d->aPageSizes->setItems( items );
        }
    }

    if ( d->aTrimMargins )
        d->aTrimMargins->setEnabled( haspages );

    if ( d->aTrimToSelection )
        d->aTrimToSelection->setEnabled( haspages );

    if ( d->aViewMode )
        d->aViewMode->setEnabled( haspages );

    if ( d->aViewContinuous )
        d->aViewContinuous->setEnabled( haspages );

    if ( d->aZoomFitWidth )
        d->aZoomFitWidth->setEnabled( haspages );
    if ( d->aZoomFitPage )
        d->aZoomFitPage->setEnabled( haspages );
    if ( d->aZoomAutoFit )
        d->aZoomAutoFit->setEnabled( haspages );

    if ( d->aZoom )
    {
        d->aZoom->selectableActionGroup()->setEnabled( haspages );
        d->aZoom->setEnabled( haspages );
    }
    if ( d->aZoomIn )
        d->aZoomIn->setEnabled( haspages );
    if ( d->aZoomOut )
        d->aZoomOut->setEnabled( haspages );
    if ( d->aZoomActual )
        d->aZoomActual->setEnabled( haspages && d->zoomFactor != 1.0 );

    if ( d->mouseModeActionGroup )
        d->mouseModeActionGroup->setEnabled( haspages );

    if ( d->aRotateClockwise )
        d->aRotateClockwise->setEnabled( haspages );
    if ( d->aRotateCounterClockwise )
        d->aRotateCounterClockwise->setEnabled( haspages );
    if ( d->aRotateOriginal )
        d->aRotateOriginal->setEnabled( haspages );
    if ( d->aToggleForms )
    { // may be null if dummy mode is on
        d->aToggleForms->setEnabled( haspages && hasformwidgets );
    }
    bool allowAnnotations = d->document->isAllowed( Okular::AllowNotes );
    if ( d->annotator )
    {
        bool allowTools = haspages && allowAnnotations;
        d->annotator->setToolsEnabled( allowTools );
        d->annotator->setTextToolsEnabled( allowTools && d->document->supportsSearching() );
    }
    if ( d->aToggleAnnotator )
    {
        if ( !allowAnnotations && d->aToggleAnnotator->isChecked() )
        {
            d->aToggleAnnotator->trigger();
        }
        d->aToggleAnnotator->setEnabled( allowAnnotations );
    }
#ifdef HAVE_SPEECH
    if ( d->aSpeakDoc )
    {
        const bool enablettsactions = haspages ? Okular::Settings::useTTS() : false;
        d->aSpeakDoc->setEnabled( enablettsactions );
        d->aSpeakPage->setEnabled( enablettsactions );
    }
#endif
    if (d->aMouseMagnifier)
        d->aMouseMagnifier->setEnabled(d->document->supportsTiles());
    if ( d->aFitWindowToPage )
        d->aFitWindowToPage->setEnabled( haspages && !Okular::Settings::viewContinuous() );
}

bool PageView::areSourceLocationsShownGraphically() const
{
    return Okular::Settings::showSourceLocationsGraphically();
}

void PageView::setShowSourceLocationsGraphically(bool show)
{
    if( show == Okular::Settings::showSourceLocationsGraphically() )
    {
        return;
    }
    Okular::Settings::setShowSourceLocationsGraphically( show );
    viewport()->update();
}

void PageView::setLastSourceLocationViewport( const Okular::DocumentViewport& vp )
{
    if( vp.rePos.enabled )
    {
        d->lastSourceLocationViewportNormalizedX = normClamp( vp.rePos.normalizedX, 0.5 );
        d->lastSourceLocationViewportNormalizedY = normClamp( vp.rePos.normalizedY, 0.0 );
    }
    else
    {
        d->lastSourceLocationViewportNormalizedX = 0.5;
        d->lastSourceLocationViewportNormalizedY = 0.0;
    }
    d->lastSourceLocationViewportPageNumber = vp.pageNumber;
    viewport()->update();
}

void PageView::clearLastSourceLocationViewport()
{
    d->lastSourceLocationViewportPageNumber = -1;
    d->lastSourceLocationViewportNormalizedX = 0.0;
    d->lastSourceLocationViewportNormalizedY = 0.0;
    viewport()->update();
}

void PageView::notifyViewportChanged( bool smoothMove )
{
    QMetaObject::invokeMethod(this, "slotRealNotifyViewportChanged", Qt::QueuedConnection, Q_ARG( bool, smoothMove ));
}

void PageView::slotRealNotifyViewportChanged( bool smoothMove )
{
    // if we are the one changing viewport, skip this notify
    if ( d->blockViewport )
        return;

    // block setViewport outgoing calls
    d->blockViewport = true;

    // find PageViewItem matching the viewport description
    const Okular::DocumentViewport & vp = d->document->viewport();
    const PageViewItem * item = nullptr;
    for ( const PageViewItem * tmpItem : qAsConst( d->items ) )
        if ( tmpItem->pageNumber() == vp.pageNumber )
        {
            item = tmpItem;
            break;
        }
    if ( !item )
    {
        qCWarning(OkularUiDebug) << "viewport for page" << vp.pageNumber << "has no matching item!";
        d->blockViewport = false;
        return;
    }
#ifdef PAGEVIEW_DEBUG
    qCDebug(OkularUiDebug) << "document viewport changed";
#endif
    // relayout in "Single Pages" mode or if a relayout is pending
    d->blockPixmapsRequest = true;
    if ( !Okular::Settings::viewContinuous() || d->dirtyLayout )
        slotRelayoutPages();

    // restore viewport center or use default {x-center,v-top} alignment
    const QPoint centerCoord = viewportToContentArea( vp );

    // if smooth movement requested, setup parameters and start it
    if ( smoothMove )
    {
        d->viewportMoveActive = true;
        d->viewportMoveTime.start();
        d->viewportMoveDest.setX( centerCoord.x() );
        d->viewportMoveDest.setY( centerCoord.y() );
        if ( !d->viewportMoveTimer )
        {
            d->viewportMoveTimer = new QTimer( this );
            connect( d->viewportMoveTimer, &QTimer::timeout,
                     this, &PageView::slotMoveViewport );
        }
        d->viewportMoveTimer->start( 25 );
        verticalScrollBar()->setEnabled( false );
        horizontalScrollBar()->setEnabled( false );
    }
    else
        center( centerCoord.x(), centerCoord.y() );
    d->blockPixmapsRequest = false;

    // request visible pixmaps in the current viewport and recompute it
    slotRequestVisiblePixmaps();

    // enable setViewport calls
    d->blockViewport = false;

    if( viewport() )
    {
        viewport()->update();
    }

    // since the page has moved below cursor, update it
    updateCursor();
}

void PageView::notifyPageChanged( int pageNumber, int changedFlags )
{
    // only handle pixmap / highlight changes notifies
    if ( changedFlags & DocumentObserver::Bookmark )
        return;

    if ( changedFlags & DocumentObserver::Annotations )
    {
        const QLinkedList< Okular::Annotation * > annots = d->document->page( pageNumber )->annotations();
        const QLinkedList< Okular::Annotation * >::ConstIterator annItEnd = annots.end();
        QSet< AnnotWindow * >::Iterator it = d->m_annowindows.begin();
        for ( ; it != d->m_annowindows.end(); )
        {
            QLinkedList< Okular::Annotation * >::ConstIterator annIt = qFind( annots, (*it)->annotation() );
            if ( annIt != annItEnd )
            {
                (*it)->reloadInfo();
                ++it;
            }
            else
            {
                AnnotWindow *w = *it;
                it = d->m_annowindows.erase( it );
                // Need to delete after removing from the list
                // otherwise deleting will call slotAnnotationWindowDestroyed which will mess
                // the list and the iterators
                delete w;
            }
        }

        d->mouseAnnotation->notifyAnnotationChanged( pageNumber );
    }

    if ( changedFlags & DocumentObserver::BoundingBox )
    {
#ifdef PAGEVIEW_DEBUG
        qCDebug(OkularUiDebug) << "BoundingBox change on page" << pageNumber;
#endif
        slotRelayoutPages();
        slotRequestVisiblePixmaps(); // TODO: slotRelayoutPages() may have done this already!
        // Repaint the whole widget since layout may have changed
        viewport()->update();
        return;
    }

    // iterate over visible items: if page(pageNumber) is one of them, repaint it
    for ( const PageViewItem * visibleItem : qAsConst( d->visibleItems ) )
        if ( visibleItem->pageNumber() == pageNumber && visibleItem->isVisible() )
        {
            // update item's rectangle plus the little outline
            QRect expandedRect = visibleItem->croppedGeometry();
            // a PageViewItem is placed in the global page layout,
            // while we need to map its position in the viewport coordinates
            // (to get the correct area to repaint)
            expandedRect.translate( -contentAreaPosition() );
            expandedRect.adjust( -1, -1, 3, 3 );
            viewport()->update( expandedRect );

            // if we were "zoom-dragging" do not overwrite the "zoom-drag" cursor
            if ( cursor().shape() != Qt::SizeVerCursor )
            {
                // since the page has been regenerated below cursor, update it
                updateCursor();
            }
            break;
        }
}

void PageView::notifyContentsCleared( int changedFlags )
{
    // if pixmaps were cleared, re-ask them
    if ( changedFlags & DocumentObserver::Pixmap )
        QMetaObject::invokeMethod(this, "slotRequestVisiblePixmaps", Qt::QueuedConnection);
}

void PageView::notifyZoom( int factor )
{
    if ( factor > 0 )
        updateZoom( ZoomIn );
    else
        updateZoom( ZoomOut );
}

bool PageView::canUnloadPixmap( int pageNumber ) const
{
    if ( Okular::SettingsCore::memoryLevel() == Okular::SettingsCore::EnumMemoryLevel::Low ||
         Okular::SettingsCore::memoryLevel() == Okular::SettingsCore::EnumMemoryLevel::Normal )
    {
        // if the item is visible, forbid unloading
        for ( const PageViewItem * visibleItem : qAsConst( d->visibleItems ) )
            if ( visibleItem->pageNumber() == pageNumber )
                return false;
    }
    else
    {
        // forbid unloading of the visible items, and of the previous and next
        for ( const PageViewItem * visibleItem : qAsConst( d->visibleItems ) )
            if ( abs( visibleItem->pageNumber() - pageNumber ) <= 1 )
                return false;
    }
    // if hidden premit unloading
    return true;
}

void PageView::notifyCurrentPageChanged( int previous, int current )
{
    if ( previous != -1 )
    {
        PageViewItem * item = d->items.at( previous );
        if ( item )
        {
            Q_FOREACH ( VideoWidget *videoWidget, item->videoWidgets() )
                videoWidget->pageLeft();
        }
    }

    if ( current != -1 )
    {
        PageViewItem * item = d->items.at( current );
        if ( item )
        {
            Q_FOREACH ( VideoWidget *videoWidget, item->videoWidgets() )
                videoWidget->pageEntered();
        }

        // update zoom text and factor if in a ZoomFit/* zoom mode
        if ( d->zoomMode != ZoomFixed )
            updateZoomText();
    }
}

//END DocumentObserver inherited methods

//BEGIN View inherited methods
bool PageView::supportsCapability( ViewCapability capability ) const
{
    switch ( capability )
    {
        case Zoom:
        case ZoomModality:
            return true;
    }
    return false;
}

Okular::View::CapabilityFlags PageView::capabilityFlags( ViewCapability capability ) const
{
    switch ( capability )
    {
        case Zoom:
        case ZoomModality:
            return CapabilityRead | CapabilityWrite | CapabilitySerializable;
    }
    return nullptr;
}

QVariant PageView::capability( ViewCapability capability ) const
{
    switch ( capability )
    {
        case Zoom:
            return d->zoomFactor;
        case ZoomModality:
            return d->zoomMode;
    }
    return QVariant();
}

void PageView::setCapability( ViewCapability capability, const QVariant &option )
{
    switch ( capability )
    {
        case Zoom:
        {
            bool ok = true;
            double factor = option.toDouble( &ok );
            if ( ok && factor > 0.0 )
            {
                d->zoomFactor = static_cast< float >( factor );
                updateZoom( ZoomRefreshCurrent );
            }
            break;
        }
        case ZoomModality:
        {
            bool ok = true;
            int mode = option.toInt( &ok );
            if ( ok )
            {
                if ( mode >= 0 && mode < 3 )
                    updateZoom( (ZoomMode)mode );
            }
            break;
        }
    }
}

//END View inherited methods

//BEGIN widget events
bool PageView::event( QEvent * event )
{
    if ( event->type() == QEvent::Gesture )
    {
        return gestureEvent(static_cast<QGestureEvent*>( event ));
    }

    // do not stop the event
    return QAbstractScrollArea::event( event );
}


bool PageView::gestureEvent( QGestureEvent * event )
{
    QPinchGesture *pinch = static_cast<QPinchGesture*>(event->gesture(Qt::PinchGesture));

    if (pinch)
    {
        // Viewport zoom level at the moment where the pinch gesture starts.
        // The viewport zoom level _during_ the gesture will be this value
        // times the relative zoom reported by QGestureEvent.
        static qreal vanillaZoom = d->zoomFactor;

        if (pinch->state() == Qt::GestureStarted)
        {
            vanillaZoom = d->zoomFactor;
        }

        const QPinchGesture::ChangeFlags changeFlags = pinch->changeFlags();

        // Zoom
        if (pinch->changeFlags() & QPinchGesture::ScaleFactorChanged)
        {
            d->zoomFactor = vanillaZoom * pinch->totalScaleFactor();

            d->blockPixmapsRequest = true;
            updateZoom( ZoomRefreshCurrent );
            d->blockPixmapsRequest = false;
            viewport()->repaint();
        }

        // Count the number of 90-degree rotations we did since the start of the pinch gesture.
        // Otherwise a pinch turned to 90 degrees and held there will rotate the page again and again.
        static int rotations = 0;

        if (changeFlags & QPinchGesture::RotationAngleChanged)
        {
            // Rotation angle relative to the accumulated page rotations triggered by the current pinch
            // We actually turn at 80 degrees rather than at 90 degrees.  That's less strain on the hands.
            const qreal relativeAngle = pinch->rotationAngle() - rotations*90;
            if (relativeAngle > 80)
            {
                slotRotateClockwise();
                rotations++;
            }
            if (relativeAngle < -80)
            {
                slotRotateCounterClockwise();
                rotations--;
            }
        }

        if (pinch->state() == Qt::GestureFinished)
        {
            rotations = 0;
        }

        return true;
    }

    return false;
}

void PageView::paintEvent(QPaintEvent *pe)
{
        const QPoint areaPos = contentAreaPosition();
        // create the rect into contents from the clipped screen rect
        QRect viewportRect = viewport()->rect();
        viewportRect.translate( areaPos );
        QRect contentsRect = pe->rect().translated( areaPos ).intersected( viewportRect );
        if ( !contentsRect.isValid() )
            return;

#ifdef PAGEVIEW_DEBUG
        qCDebug(OkularUiDebug) << "paintevent" << contentsRect;
#endif

        // create the screen painter. a pixel painted at contentsX,contentsY
        // appears to the top-left corner of the scrollview.
        QPainter screenPainter( viewport() );
        // translate to simulate the scrolled content widget
        screenPainter.translate( -areaPos );

        // selectionRect is the normalized mouse selection rect
        QRect selectionRect = d->mouseSelectionRect;
        if ( !selectionRect.isNull() )
            selectionRect = selectionRect.normalized();
        // selectionRectInternal without the border
        QRect selectionRectInternal = selectionRect;
        selectionRectInternal.adjust( 1, 1, -1, -1 );
        // color for blending
        QColor selBlendColor = (selectionRect.width() > 8 || selectionRect.height() > 8) ?
                            d->mouseSelectionColor : Qt::red;

        // subdivide region into rects
        const QVector<QRect> &allRects = pe->region().rects();
        uint numRects = allRects.count();

        // preprocess rects area to see if it worths or not using subdivision
        uint summedArea = 0;
        for ( uint i = 0; i < numRects; i++ )
        {
            const QRect & r = allRects[i];
            summedArea += r.width() * r.height();
        }
        // very elementary check: SUMj(Region[j].area) is less than boundingRect.area
        bool useSubdivision = summedArea < (0.6 * contentsRect.width() * contentsRect.height());
        if ( !useSubdivision )
            numRects = 1;

        // iterate over the rects (only one loop if not using subdivision)
        for ( uint i = 0; i < numRects; i++ )
        {
            if ( useSubdivision )
            {
                // set 'contentsRect' to a part of the sub-divided region
                contentsRect = allRects[i].translated( areaPos ).intersected( viewportRect );
                if ( !contentsRect.isValid() )
                    continue;
            }
#ifdef PAGEVIEW_DEBUG
            qCDebug(OkularUiDebug) << contentsRect;
#endif

            // note: this check will take care of all things requiring alpha blending (not only selection)
            bool wantCompositing = !selectionRect.isNull() && contentsRect.intersects( selectionRect );
            // also alpha-blend when there is a table selection...
            wantCompositing |= !d->tableSelectionParts.isEmpty();

            if ( wantCompositing && Okular::Settings::enableCompositing() )
            {
                // create pixmap and open a painter over it (contents{left,top} becomes pixmap {0,0})
                QPixmap doubleBuffer( contentsRect.size() * devicePixelRatioF() );
                doubleBuffer.setDevicePixelRatio(devicePixelRatioF());
                QPainter pixmapPainter( &doubleBuffer );

                pixmapPainter.translate( -contentsRect.left(), -contentsRect.top() );

                // 1) Layer 0: paint items and clear bg on unpainted rects
                drawDocumentOnPainter( contentsRect, &pixmapPainter );
                // 2a) Layer 1a: paint (blend) transparent selection (rectangle)
                if ( !selectionRect.isNull() && selectionRect.intersects( contentsRect ) &&
                    !selectionRectInternal.contains( contentsRect ) )
                {
                    QRect blendRect = selectionRectInternal.intersected( contentsRect );
                    // skip rectangles covered by the selection's border
                    if ( blendRect.isValid() )
                    {
                        // grab current pixmap into a new one to colorize contents
                        QPixmap blendedPixmap( blendRect.width() * devicePixelRatioF(), blendRect.height() * devicePixelRatioF() );
                        blendedPixmap.setDevicePixelRatio(devicePixelRatioF());
                        QPainter p( &blendedPixmap );

                        p.drawPixmap( 0, 0, doubleBuffer,
                                    (blendRect.left() - contentsRect.left()) * devicePixelRatioF(), (blendRect.top() - contentsRect.top()) * devicePixelRatioF(),
                                    blendRect.width() * devicePixelRatioF(), blendRect.height() * devicePixelRatioF() );

                        QColor blCol = selBlendColor.darker( 140 );
                        blCol.setAlphaF( 0.2 );
                        p.fillRect( blendedPixmap.rect(), blCol );
                        p.end();
                        // copy the blended pixmap back to its place
                        pixmapPainter.drawPixmap( blendRect.left(), blendRect.top(), blendedPixmap );
                    }
                    // draw border (red if the selection is too small)
                    pixmapPainter.setPen( selBlendColor );
                    pixmapPainter.drawRect( selectionRect.adjusted( 0, 0, -1, -1 ) );
                }
                // 2b) Layer 1b: paint (blend) transparent selection (table)
                foreach (const TableSelectionPart &tsp, d->tableSelectionParts) {
                    QRect selectionPartRect = tsp.rectInItem.geometry(tsp.item->uncroppedWidth(), tsp.item->uncroppedHeight());
                    selectionPartRect.translate( tsp.item->uncroppedGeometry().topLeft () );
                    QRect selectionPartRectInternal = selectionPartRect;
                    selectionPartRectInternal.adjust( 1, 1, -1, -1 );
                    if ( !selectionPartRect.isNull() && selectionPartRect.intersects( contentsRect ) &&
                        !selectionPartRectInternal.contains( contentsRect ) )
                    {
                        QRect blendRect = selectionPartRectInternal.intersected( contentsRect );
                        // skip rectangles covered by the selection's border
                        if ( blendRect.isValid() )
                        {
                            // grab current pixmap into a new one to colorize contents
                            QPixmap blendedPixmap( blendRect.width()  * devicePixelRatioF(), blendRect.height()  * devicePixelRatioF() );
                            blendedPixmap.setDevicePixelRatio(devicePixelRatioF());
                            QPainter p( &blendedPixmap );
                            p.drawPixmap( 0, 0, doubleBuffer,
                                        (blendRect.left() - contentsRect.left()) * devicePixelRatioF(), (blendRect.top() - contentsRect.top()) * devicePixelRatioF(),
                                        blendRect.width() * devicePixelRatioF(), blendRect.height() * devicePixelRatioF() );

                            QColor blCol = d->mouseSelectionColor.darker( 140 );
                            blCol.setAlphaF( 0.2 );
                            p.fillRect( blendedPixmap.rect(), blCol );
                            p.end();
                            // copy the blended pixmap back to its place
                            pixmapPainter.drawPixmap( blendRect.left(), blendRect.top(), blendedPixmap );
                        }
                        // draw border (red if the selection is too small)
                        pixmapPainter.setPen( d->mouseSelectionColor );
                        pixmapPainter.drawRect( selectionPartRect.adjusted( 0, 0, -1, -1 ) );
                    }
                }
                drawTableDividers( &pixmapPainter );
                // 3a) Layer 1: give annotator painting control
                if ( d->annotator && d->annotator->routePaints( contentsRect ) )
                    d->annotator->routePaint( &pixmapPainter, contentsRect );
                // 3b) Layer 1: give mouseAnnotation painting control
                d->mouseAnnotation->routePaint( &pixmapPainter, contentsRect );

                // 4) Layer 2: overlays
                if ( Okular::Settings::debugDrawBoundaries() )
                {
                    pixmapPainter.setPen( Qt::blue );
                    pixmapPainter.drawRect( contentsRect );
                }

                // finish painting and draw contents
                pixmapPainter.end();
                screenPainter.drawPixmap( contentsRect.left(), contentsRect.top(), doubleBuffer );
            }
            else
            {
                // 1) Layer 0: paint items and clear bg on unpainted rects
                drawDocumentOnPainter( contentsRect, &screenPainter );
                // 2a) Layer 1a: paint opaque selection (rectangle)
                if ( !selectionRect.isNull() && selectionRect.intersects( contentsRect ) &&
                    !selectionRectInternal.contains( contentsRect ) )
                {
                    screenPainter.setPen( palette().color( QPalette::Active, QPalette::Highlight ).darker(110) );
                    screenPainter.drawRect( selectionRect );
                }
                // 2b) Layer 1b: paint opaque selection (table)
                foreach (const TableSelectionPart &tsp, d->tableSelectionParts) {
                    QRect selectionPartRect = tsp.rectInItem.geometry(tsp.item->uncroppedWidth(), tsp.item->uncroppedHeight());
                    selectionPartRect.translate( tsp.item->uncroppedGeometry().topLeft () );
                    QRect selectionPartRectInternal = selectionPartRect;
                    selectionPartRectInternal.adjust( 1, 1, -1, -1 );
                    if ( !selectionPartRect.isNull() && selectionPartRect.intersects( contentsRect ) &&
                        !selectionPartRectInternal.contains( contentsRect ) )
                    {
                        screenPainter.setPen( palette().color( QPalette::Active, QPalette::Highlight ).darker(110) );
                        screenPainter.drawRect( selectionPartRect );
                    }
                }
                drawTableDividers( &screenPainter );
                // 3a) Layer 1: give annotator painting control
                if ( d->annotator && d->annotator->routePaints( contentsRect ) )
                    d->annotator->routePaint( &screenPainter, contentsRect );
                // 3b) Layer 1: give mouseAnnotation painting control
                d->mouseAnnotation->routePaint( &screenPainter, contentsRect );

                // 4) Layer 2: overlays
                if ( Okular::Settings::debugDrawBoundaries() )
                {
                    screenPainter.setPen( Qt::red );
                    screenPainter.drawRect( contentsRect );
                }
            }
        }
}

void PageView::drawTableDividers(QPainter * screenPainter)
{
        if (!d->tableSelectionParts.isEmpty()) {
            screenPainter->setPen( d->mouseSelectionColor.darker() );
            if (d->tableDividersGuessed) {
                QPen p = screenPainter->pen();
                p.setStyle( Qt::DashLine );
                screenPainter->setPen( p );
            }
            foreach (const TableSelectionPart &tsp, d->tableSelectionParts) {
                QRect selectionPartRect = tsp.rectInItem.geometry(tsp.item->uncroppedWidth(), tsp.item->uncroppedHeight());
                selectionPartRect.translate( tsp.item->uncroppedGeometry().topLeft () );
                QRect selectionPartRectInternal = selectionPartRect;
                selectionPartRectInternal.adjust( 1, 1, -1, -1 );
                foreach(double col, d->tableSelectionCols) {
                    if (col >= tsp.rectInSelection.left && col <= tsp.rectInSelection.right) {
                        col = (col - tsp.rectInSelection.left) / (tsp.rectInSelection.right - tsp.rectInSelection.left);
                        const int x =  selectionPartRect.left() + col * selectionPartRect.width() + 0.5;
                        screenPainter->drawLine(
                            x, selectionPartRectInternal.top(),
                            x, selectionPartRectInternal.top() + selectionPartRectInternal.height()
                        );
                    }
                }
                foreach(double row, d->tableSelectionRows) {
                    if (row >= tsp.rectInSelection.top && row <= tsp.rectInSelection.bottom) {
                        row = (row - tsp.rectInSelection.top) / (tsp.rectInSelection.bottom - tsp.rectInSelection.top);
                        const int y =  selectionPartRect.top() + row * selectionPartRect.height() + 0.5;
                        screenPainter->drawLine(
                            selectionPartRectInternal.left(), y,
                            selectionPartRectInternal.left() + selectionPartRectInternal.width(), y
                        );
                    }
                }
            }
        }
}

void PageView::resizeEvent( QResizeEvent *e )
{
    if ( d->items.isEmpty() )
    {
        resizeContentArea( e->size() );
        return;
    }

    if ( ( d->zoomMode == ZoomFitWidth || d->zoomMode == ZoomFitAuto ) && !verticalScrollBar()->isVisible() && qAbs(e->oldSize().height() - e->size().height()) < verticalScrollBar()->width() && d->verticalScrollBarVisible )
    {
        // this saves us from infinite resizing loop because of scrollbars appearing and disappearing
        // see bug 160628 for more info
        // TODO looks are still a bit ugly because things are left uncentered
        // but better a bit ugly than unusable
        d->verticalScrollBarVisible = false;
        resizeContentArea( e->size() );
        return;
    }
    else if ( d->zoomMode == ZoomFitAuto && !horizontalScrollBar()->isVisible() && qAbs(e->oldSize().width() - e->size().width()) < horizontalScrollBar()->height() && d->horizontalScrollBarVisible )
    {
        // this saves us from infinite resizing loop because of scrollbars appearing and disappearing
        // TODO looks are still a bit ugly because things are left uncentered
        // but better a bit ugly than unusable
        d->horizontalScrollBarVisible = false;
        resizeContentArea( e->size() );
        return;
    }

    // start a timer that will refresh the pixmap after 0.2s
    d->delayResizeEventTimer->start( 200 );
    d->verticalScrollBarVisible = verticalScrollBar()->isVisible();
    d->horizontalScrollBarVisible = horizontalScrollBar()->isVisible();
}

void PageView::keyPressEvent( QKeyEvent * e )
{
    e->accept();

    // if performing a selection or dyn zooming, disable keys handling
    if ( ( d->mouseSelecting && e->key() != Qt::Key_Escape ) || ( QApplication::mouseButtons () & Qt::MidButton ) )
        return;

    // if viewport is moving, disable keys handling
    if ( d->viewportMoveActive )
        return;

    // move/scroll page by using keys
    switch ( e->key() )
    {
        case Qt::Key_J:
        case Qt::Key_K:
        case Qt::Key_Down:
        case Qt::Key_PageDown:
        case Qt::Key_Up:
        case Qt::Key_PageUp:
        case Qt::Key_Backspace:
            if ( e->key() == Qt::Key_Down
                 || e->key() == Qt::Key_PageDown
                 || e->key() == Qt::Key_J )
            {
                bool singleStep = e->key() == Qt::Key_Down || e->key() == Qt::Key_J;
                slotScrollDown( singleStep );
            }
            else
            {
                bool singleStep = e->key() == Qt::Key_Up || e->key() == Qt::Key_K;
                slotScrollUp( singleStep );
            }
            break;
        case Qt::Key_Left:
        case Qt::Key_H:
            if ( horizontalScrollBar()->maximum() == 0 )
            {
                //if we cannot scroll we go to the previous page vertically
                int next_page = d->document->currentPage() - viewColumns();
                d->document->setViewportPage(next_page);
            }
            else
                horizontalScrollBar()->triggerAction( QScrollBar::SliderSingleStepSub );
            break;
        case Qt::Key_Right:
        case Qt::Key_L:
            if ( horizontalScrollBar()->maximum() == 0 )
            {
                //if we cannot scroll we advance the page vertically
                int next_page = d->document->currentPage() + viewColumns();
                d->document->setViewportPage(next_page);
            }
            else
                horizontalScrollBar()->triggerAction( QScrollBar::SliderSingleStepAdd );
            break;
        case Qt::Key_Escape:
            emit escPressed();
            selectionClear( d->tableDividersGuessed ? ClearOnlyDividers : ClearAllSelection );
            d->mousePressPos = QPoint();
            if ( d->aPrevAction )
            {
                d->aPrevAction->trigger();
                d->aPrevAction = nullptr;
            }
            d->mouseAnnotation->routeKeyPressEvent( e );
            break;
        case Qt::Key_Delete:
            d->mouseAnnotation->routeKeyPressEvent( e );
            break;
        case Qt::Key_Shift:
        case Qt::Key_Control:
            if ( d->autoScrollTimer )
            {
                if ( d->autoScrollTimer->isActive() )
                    d->autoScrollTimer->stop();
                else
                    slotAutoScroll();
                return;
            }
            // fallthrough
        default:
            e->ignore();
            return;
    }
    // if a known key has been pressed, stop scrolling the page
    if ( d->autoScrollTimer )
    {
        d->scrollIncrement = 0;
        d->autoScrollTimer->stop();
    }
}

void PageView::keyReleaseEvent( QKeyEvent * e )
{
    e->accept();

    if ( d->annotator && d->annotator->active() )
    {
        if ( d->annotator->routeKeyEvent( e ) )
            return;
    }

    if ( e->key() == Qt::Key_Escape && d->autoScrollTimer )
    {
        d->scrollIncrement = 0;
        d->autoScrollTimer->stop();
    }
}

void PageView::inputMethodEvent( QInputMethodEvent * e )
{
    Q_UNUSED(e)
}

void PageView::tabletEvent( QTabletEvent * e )
{
    // Ignore tablet events that we don't care about
    if ( !( e->type() == QEvent::TabletPress ||
            e->type() == QEvent::TabletRelease ||
            e->type() == QEvent::TabletMove ) )
    {
        e->ignore();
        return;
    }

    // Determine pen state
    bool penReleased = false;
    if ( e->type() == QEvent::TabletPress )
    {
        d->penDown = true;
    }
    if ( e->type() == QEvent::TabletRelease )
    {
        d->penDown = false;
        penReleased = true;
    }

    // If we're editing an annotation and the tablet pen is either down or just released
    // then dispatch event to annotator
    if ( d->annotator && d->annotator->active() && ( d->penDown || penReleased ) )
    {
        const QPoint eventPos = contentAreaPoint( e->pos() );
        PageViewItem * pageItem = pickItemOnPoint( eventPos.x(), eventPos.y() );
        const QPoint localOriginInGlobal = mapToGlobal( QPoint(0,0) );

        // routeTabletEvent will accept or ignore event as appropriate
        d->annotator->routeTabletEvent( e, pageItem, localOriginInGlobal );
    } else {
        e->ignore();
    }
}

void PageView::mouseMoveEvent( QMouseEvent * e )
{
    // For some reason in Qt 5.11.2 (no idea when this started) all wheel
    // events are followed by mouse move events (without changing position),
    // so we only actually reset the controlWheelAccumulatedDelta if there is a mouse movement
    if ( e->globalPos() != d->previousMouseMovePos )
    {
        d->controlWheelAccumulatedDelta = 0;
    }
    d->previousMouseMovePos = e->globalPos();

    // don't perform any mouse action when no document is shown
    if ( d->items.isEmpty() )
        return;

    // don't perform any mouse action when viewport is autoscrolling
    if ( d->viewportMoveActive )
        return;

    // if holding mouse mid button, perform zoom
    if ( e->buttons() & Qt::MidButton )
    {
        int mouseY = e->globalPos().y();
        int deltaY = d->mouseMidLastY - mouseY;

        // wrap mouse from top to bottom
        const QRect mouseContainer = QApplication::desktop()->screenGeometry( this );
        const int absDeltaY = abs(deltaY);
        if ( absDeltaY > mouseContainer.height() / 2 )
        {
            deltaY = mouseContainer.height() - absDeltaY;
        }

        const float upperZoomLimit = d->document->supportsTiles() ? 15.99 : 3.99;
        if ( mouseY <= mouseContainer.top() + 4 &&
             d->zoomFactor < upperZoomLimit )
        {
            mouseY = mouseContainer.bottom() - 5;
            QCursor::setPos( e->globalPos().x(), mouseY );
        }
        // wrap mouse from bottom to top
        else if ( mouseY >= mouseContainer.bottom() - 4 &&
                  d->zoomFactor > 0.101 )
        {
            mouseY = mouseContainer.top() + 5;
            QCursor::setPos( e->globalPos().x(), mouseY );
        }
        // remember last position
        d->mouseMidLastY = mouseY;

        // update zoom level, perform zoom and redraw
        if ( deltaY )
        {
            d->zoomFactor *= ( 1.0 + ( (double)deltaY / 500.0 ) );
            d->blockPixmapsRequest = true;
            updateZoom( ZoomRefreshCurrent );
            d->blockPixmapsRequest = false;
            viewport()->repaint();
        }
        return;
    }

    const QPoint eventPos = contentAreaPoint( e->pos() );

    // if we're editing an annotation, dispatch event to it
    if ( d->annotator && d->annotator->active() )
    {
        PageViewItem * pageItem = pickItemOnPoint( eventPos.x(), eventPos.y() );
        updateCursor( eventPos );
        d->annotator->routeMouseEvent( e, pageItem );
        return;
    }

    bool leftButton = (e->buttons() == Qt::LeftButton);
    bool rightButton = (e->buttons() == Qt::RightButton);

    switch ( d->mouseMode )
    {
        case Okular::Settings::EnumMouseMode::Browse:
        {
            PageViewItem * pageItem = pickItemOnPoint( eventPos.x(), eventPos.y() );
            if ( leftButton )
            {
                d->leftClickTimer.stop();
                if ( pageItem && d->mouseAnnotation->isActive() )
                {
                    // if left button pressed and annotation is focused, forward move event
                    d->mouseAnnotation->routeMouseMoveEvent( pageItem, eventPos, leftButton );
                }
                // drag page
                else if ( !d->mouseGrabPos.isNull() )
                {
                    setCursor( Qt::ClosedHandCursor );

                    QPoint mousePos = e->globalPos();
                    QPoint delta = d->mouseGrabPos - mousePos;

                    // wrap mouse from top to bottom
                    const QRect mouseContainer = QApplication::desktop()->screenGeometry( this );
                    // If the delta is huge it probably means we just wrapped in that direction
                    const QPoint absDelta(abs(delta.x()), abs(delta.y()));
                    if ( absDelta.y() > mouseContainer.height() / 2 )
                    {
                        delta.setY(mouseContainer.height() - absDelta.y());
                    }
                    if ( absDelta.x() > mouseContainer.width() / 2 )
                    {
                        delta.setX(mouseContainer.width() - absDelta.x());
                    }
                    if ( mousePos.y() <= mouseContainer.top() + 4 &&
                         verticalScrollBar()->value() < verticalScrollBar()->maximum() - 10 )
                    {
                        mousePos.setY( mouseContainer.bottom() - 5 );
                        QCursor::setPos( mousePos );
                    }
                    // wrap mouse from bottom to top
                    else if ( mousePos.y() >= mouseContainer.bottom() - 4 &&
                              verticalScrollBar()->value() > 10 )
                    {
                        mousePos.setY( mouseContainer.top() + 5 );
                        QCursor::setPos( mousePos );
                    }
                    // remember last position
                    d->mouseGrabPos = mousePos;

                    // scroll page by position increment
                    scrollTo( horizontalScrollBar()->value() + delta.x(), verticalScrollBar()->value() + delta.y() );
                }
            }
            else if ( rightButton && !d->mousePressPos.isNull() && d->aMouseSelect )
            {
                // if mouse moves 5 px away from the press point, switch to 'selection'
                int deltaX = d->mousePressPos.x() - e->globalPos().x(),
                    deltaY = d->mousePressPos.y() - e->globalPos().y();
                if ( deltaX > 5 || deltaX < -5 || deltaY > 5 || deltaY < -5 )
                {
                    d->aPrevAction = d->aMouseNormal;
                    d->aMouseSelect->trigger();
                    QPoint newPos = eventPos + QPoint( deltaX, deltaY );
                    selectionStart( newPos, palette().color( QPalette::Active, QPalette::Highlight ).lighter( 120 ), false );
                    updateSelection( eventPos );
                    break;
                }
            }
            else
            {
                /* Forward move events which are still not yet consumed by "mouse grab" or aMouseSelect */
                d->mouseAnnotation->routeMouseMoveEvent( pageItem, eventPos, leftButton );
                updateCursor();
            }
        }
        break;

        case Okular::Settings::EnumMouseMode::Zoom:
        case Okular::Settings::EnumMouseMode::RectSelect:
        case Okular::Settings::EnumMouseMode::TableSelect:
        case Okular::Settings::EnumMouseMode::TrimSelect:
            // set second corner of selection
            if ( d->mouseSelecting ) {
                updateSelection( eventPos );
                d->mouseOverLinkObject = nullptr;
            }
            updateCursor();
            break;

        case Okular::Settings::EnumMouseMode::Magnifier:
            if ( e->buttons() ) // if any button is pressed at all
            {
                moveMagnifier( e->pos() );
                updateMagnifier( eventPos );
            }
            break;

        case Okular::Settings::EnumMouseMode::TextSelect:
            // if mouse moves 5 px away from the press point and the document supports text extraction, do 'textselection'
            if ( !d->mouseTextSelecting && !d->mousePressPos.isNull() && d->document->supportsSearching() && ( ( eventPos - d->mouseSelectPos ).manhattanLength() > 5 ) )
            {
                d->mouseTextSelecting = true;
            }
            updateSelection( eventPos );
            updateCursor();
            break;
    }
}

void PageView::mousePressEvent( QMouseEvent * e )
{
    d->controlWheelAccumulatedDelta = 0;

    // don't perform any mouse action when no document is shown
    if ( d->items.isEmpty() )
        return;

    // if performing a selection or dyn zooming, disable mouse press
    if ( d->mouseSelecting || ( e->button() != Qt::MidButton && ( e->buttons() & Qt::MidButton) ) || d->viewportMoveActive )
        return;

    // if the page is scrolling, stop it
    if ( d->autoScrollTimer )
    {
        d->scrollIncrement = 0;
        d->autoScrollTimer->stop();
    }

    // if pressing mid mouse button while not doing other things, begin 'continuous zoom' mode
    if ( e->button() == Qt::MidButton )
    {
        d->mouseMidLastY = e->globalPos().y();
        setCursor( Qt::SizeVerCursor );
        return;
    }

    const QPoint eventPos = contentAreaPoint( e->pos() );

    // if we're editing an annotation, dispatch event to it
    if ( d->annotator && d->annotator->active() )
    {
        PageViewItem * pageItem = pickItemOnPoint( eventPos.x(), eventPos.y() );
        d->annotator->routeMouseEvent( e, pageItem );
        return;
    }

    // trigger history navigation for additional mouse buttons
    if ( e->button() == Qt::XButton1 )
    {
        emit mouseBackButtonClick();
        return;
    }
    if ( e->button() == Qt::XButton2 )
    {
        emit mouseForwardButtonClick();
        return;
    }

    // update press / 'start drag' mouse position
    d->mousePressPos = e->globalPos();

    // handle mode dependent mouse press actions
    bool leftButton = e->button() == Qt::LeftButton,
         rightButton = e->button() == Qt::RightButton;

//   Not sure we should erase the selection when clicking with left.
     if ( d->mouseMode != Okular::Settings::EnumMouseMode::TextSelect )
       textSelectionClear();

    switch ( d->mouseMode )
    {
        case Okular::Settings::EnumMouseMode::Browse:   // drag start / click / link following
        {
            PageViewItem * pageItem = pickItemOnPoint( eventPos.x(), eventPos.y() );
            if ( leftButton )
            {
                if ( pageItem )
                {
                    d->mouseAnnotation->routeMousePressEvent( pageItem, eventPos );
                }
                d->mouseGrabPos = d->mouseOnRect ? QPoint() : d->mousePressPos;
                if ( !d->mouseOnRect )
                    d->leftClickTimer.start( QApplication::doubleClickInterval() + 10 );
            }
            else if ( rightButton )
            {
                if ( pageItem )
                {
                    // find out normalized mouse coords inside current item
                    const QRect & itemRect = pageItem->uncroppedGeometry();
                    double nX = pageItem->absToPageX(eventPos.x());
                    double nY = pageItem->absToPageY(eventPos.y());

                    const QLinkedList< const Okular::ObjectRect *> orects = pageItem->page()->objectRects( Okular::ObjectRect::OAnnotation, nX, nY, itemRect.width(), itemRect.height() );

                    if ( !orects.isEmpty() )
                    {
                        AnnotationPopup popup( d->document, AnnotationPopup::MultiAnnotationMode, this );

                        foreach ( const Okular::ObjectRect * orect, orects )
                        {
                            Okular::Annotation * ann = ( (Okular::AnnotationObjectRect *)orect )->annotation();
                            if ( ann && (ann->subType() != Okular::Annotation::AWidget) )
                                popup.addAnnotation( ann, pageItem->pageNumber() );

                        }

                        connect( &popup, &AnnotationPopup::openAnnotationWindow,
                                 this, &PageView::openAnnotationWindow );

                        popup.exec( e->globalPos() );
                        // Since ↑ spins its own event loop we won't get the mouse release event
                        // so reset mousePressPos here
                        d->mousePressPos = QPoint();
                    }
                }
            }
        }
        break;

        case Okular::Settings::EnumMouseMode::Zoom:     // set first corner of the zoom rect
            if ( leftButton )
                selectionStart( eventPos, palette().color( QPalette::Active, QPalette::Highlight ), false );
            else if ( rightButton )
                updateZoom( ZoomOut );
            break;

        case Okular::Settings::EnumMouseMode::Magnifier:
            moveMagnifier( e->pos() );
            d->magnifierView->show();
            updateMagnifier( eventPos );
            break;

        case Okular::Settings::EnumMouseMode::RectSelect:   // set first corner of the selection rect
        case Okular::Settings::EnumMouseMode::TrimSelect:
             if ( leftButton )
             {
                selectionStart( eventPos, palette().color( QPalette::Active, QPalette::Highlight ).lighter( 120 ), false );
             }
            break;
        case Okular::Settings::EnumMouseMode::TableSelect:
             if ( leftButton )
             {
                if (d->tableSelectionParts.isEmpty())
                {
                    selectionStart( eventPos, palette().color( QPalette::Active, QPalette::Highlight ).lighter( 120 ), false );
                } else {
                    QRect updatedRect;
                    foreach (const TableSelectionPart &tsp, d->tableSelectionParts) {
                        QRect selectionPartRect = tsp.rectInItem.geometry(tsp.item->uncroppedWidth(), tsp.item->uncroppedHeight());
                        selectionPartRect.translate( tsp.item->uncroppedGeometry().topLeft () );

                        // This will update the whole table rather than just the added/removed divider
                        // (which can span more than one part).
                        updatedRect = updatedRect.united(selectionPartRect);

                        if (!selectionPartRect.contains(eventPos))
                            continue;

                        // At this point it's clear we're either adding or removing a divider manually, so obviously the user is happy with the guess (if any).
                        d->tableDividersGuessed = false;

                        // There's probably a neat trick to finding which edge it's closest to,
                        // but this way has the advantage of simplicity.
                        const int fromLeft = abs(selectionPartRect.left() - eventPos.x());
                        const int fromRight = abs(selectionPartRect.left() + selectionPartRect.width() - eventPos.x());
                        const int fromTop = abs(selectionPartRect.top() - eventPos.y());
                        const int fromBottom = abs(selectionPartRect.top() + selectionPartRect.height() - eventPos.y());
                        const int colScore = fromTop<fromBottom ? fromTop : fromBottom;
                        const int rowScore = fromLeft<fromRight ? fromLeft : fromRight;

                        if (colScore < rowScore) {
                            bool deleted=false;
                            for(int i=0; i<d->tableSelectionCols.length(); i++) {
                                const double col = (d->tableSelectionCols[i] - tsp.rectInSelection.left) / (tsp.rectInSelection.right - tsp.rectInSelection.left);
                                const int colX =  selectionPartRect.left() + col * selectionPartRect.width() + 0.5;
                                if (abs(colX - eventPos.x())<=3) {
                                    d->tableSelectionCols.removeAt(i);
                                    deleted=true;

                                    break;
                                }
                            }
                            if (!deleted) {
                                double col = eventPos.x() - selectionPartRect.left();
                                col /= selectionPartRect.width(); // at this point, it's normalised within the part
                                col *= (tsp.rectInSelection.right - tsp.rectInSelection.left);
                                col += tsp.rectInSelection.left; // at this point, it's normalised within the whole table

                                d->tableSelectionCols.append(col);
                                std::sort(d->tableSelectionCols.begin(), d->tableSelectionCols.end());
                            }
                        } else {
                            bool deleted=false;
                            for(int i=0; i<d->tableSelectionRows.length(); i++) {
                                const double row = (d->tableSelectionRows[i] - tsp.rectInSelection.top) / (tsp.rectInSelection.bottom - tsp.rectInSelection.top);
                                const int rowY =  selectionPartRect.top() + row * selectionPartRect.height() + 0.5;
                                if (abs(rowY - eventPos.y())<=3) {
                                    d->tableSelectionRows.removeAt(i);
                                    deleted=true;

                                    break;
                                }
                            }
                            if (!deleted) {
                                double row = eventPos.y() - selectionPartRect.top();
                                row /= selectionPartRect.height(); // at this point, it's normalised within the part
                                row *= (tsp.rectInSelection.bottom - tsp.rectInSelection.top);
                                row += tsp.rectInSelection.top; // at this point, it's normalised within the whole table

                                d->tableSelectionRows.append(row);
                                std::sort(d->tableSelectionRows.begin(), d->tableSelectionRows.end());
                            }
                        }
                    }
                    updatedRect.translate( -contentAreaPosition() );
                    viewport()->update( updatedRect );
                }
             }
            break;
        case Okular::Settings::EnumMouseMode::TextSelect:
            d->mouseSelectPos = eventPos;
            if ( !rightButton )
            {
                textSelectionClear();
            }
            break;
    }
}

void PageView::mouseReleaseEvent( QMouseEvent * e )
{
    d->controlWheelAccumulatedDelta = 0;

    // stop the drag scrolling
    d->dragScrollTimer.stop();

    d->leftClickTimer.stop();

    const bool leftButton = e->button() == Qt::LeftButton;
    const bool rightButton = e->button() == Qt::RightButton;

    if ( d->mouseAnnotation->isActive() && leftButton )
    {
        // Just finished to move the annotation
        d->mouseAnnotation->routeMouseReleaseEvent();
    }

    // don't perform any mouse action when no document is shown..
    if ( d->items.isEmpty() )
    {
        // ..except for right Clicks (emitted even it viewport is empty)
        if ( e->button() == Qt::RightButton )
            emit rightClick( nullptr, e->globalPos() );
        return;
    }

    // don't perform any mouse action when viewport is autoscrolling
    if ( d->viewportMoveActive )
        return;

    const QPoint eventPos = contentAreaPoint( e->pos() );

    // handle mode independent mid bottom zoom
    if ( e->button() == Qt::MidButton )
    {
        // request pixmaps since it was disabled during drag
        slotRequestVisiblePixmaps();
        // the cursor may now be over a link.. update it
        updateCursor( eventPos );
        return;
    }

    // if we're editing an annotation, dispatch event to it
    if ( d->annotator && d->annotator->active() )
    {
        PageViewItem * pageItem = pickItemOnPoint( eventPos.x(), eventPos.y() );
        d->annotator->routeMouseEvent( e, pageItem );
        return;
    }

    switch ( d->mouseMode )
    {
        case Okular::Settings::EnumMouseMode::Browse:{
            // return the cursor to its normal state after dragging
            if ( cursor().shape() == Qt::ClosedHandCursor )
                updateCursor( eventPos );

            PageViewItem * pageItem = pickItemOnPoint( eventPos.x(), eventPos.y() );
            const QPoint pressPos = contentAreaPoint( mapFromGlobal( d->mousePressPos ) );
            const PageViewItem * pageItemPressPos = pickItemOnPoint( pressPos.x(), pressPos.y() );

            // if the mouse has not moved since the press, that's a -click-
            if ( leftButton && pageItem && pageItem == pageItemPressPos &&
                 ( (d->mousePressPos - e->globalPos()).manhattanLength() < QApplication::startDragDistance() ) )
            {
                if ( !mouseReleaseOverLink( d->mouseOverLinkObject ) && ( e->modifiers() == Qt::ShiftModifier ) )
                {
                    const double nX = pageItem->absToPageX(eventPos.x());
                    const double nY = pageItem->absToPageY(eventPos.y());
                    const Okular::ObjectRect * rect;
                    // TODO: find a better way to activate the source reference "links"
                    // for the moment they are activated with Shift + left click
                    // Search the nearest source reference.
                    rect = pageItem->page()->objectRect( Okular::ObjectRect::SourceRef, nX, nY, pageItem->uncroppedWidth(), pageItem->uncroppedHeight() );
                    if ( !rect )
                    {
                        static const double s_minDistance = 0.025; // FIXME?: empirical value?
                        double distance = 0.0;
                        rect = pageItem->page()->nearestObjectRect( Okular::ObjectRect::SourceRef, nX, nY, pageItem->uncroppedWidth(), pageItem->uncroppedHeight(), &distance );
                        // distance is distanceSqr, adapt it to a normalized value
                        distance = distance / (pow( pageItem->uncroppedWidth(), 2 ) + pow( pageItem->uncroppedHeight(), 2 ));
                        if ( rect && ( distance > s_minDistance ) )
                            rect = nullptr;
                    }
                    if ( rect )
                    {
                        const Okular::SourceReference * ref = static_cast< const Okular::SourceReference * >( rect->object() );
                        d->document->processSourceReference( ref );
                    }
                    else
                    {
                        const Okular::SourceReference * ref = d->document->dynamicSourceReference( pageItem->  pageNumber(), nX * pageItem->page()->width(), nY * pageItem->page()->height() );
                        if ( ref )
                        {
                            d->document->processSourceReference( ref );
                            delete ref;
                        }
                    }
                }
#if 0
                else
                {
                    // a link can move us to another page or even to another document, there's no point in trying to
                    //  process the click on the image once we have processes the click on the link
                    rect = pageItem->page()->objectRect( Okular::ObjectRect::Image, nX, nY, pageItem->width(), pageItem->height() );
                    if ( rect )
                    {
                        // handle click over a image
                    }
/*		Enrico and me have decided this is not worth the trouble it generates
                    else
                    {
                        // if not on a rect, the click selects the page
                        // if ( pageItem->pageNumber() != (int)d->document->currentPage() )
                        d->document->setViewportPage( pageItem->pageNumber(), this );
                    }*/
                }
#endif
            }
            else if ( rightButton && !d->mouseAnnotation->isModified() )
            {
                if ( pageItem && pageItem == pageItemPressPos &&
                     ( (d->mousePressPos - e->globalPos()).manhattanLength() < QApplication::startDragDistance() ) )
                {
                    QMenu * menu = createProcessLinkMenu(pageItem, eventPos );
                    if ( menu )
                    {
                        menu->exec( e->globalPos() );
                        menu->deleteLater();
                    }
                    else
                    {
                        const double nX = pageItem->absToPageX(eventPos.x());
                        const double nY = pageItem->absToPageY(eventPos.y());
                        // a link can move us to another page or even to another document, there's no point in trying to
                        //  process the click on the image once we have processes the click on the link
                        const Okular::ObjectRect * rect = pageItem->page()->objectRect( Okular::ObjectRect::Image, nX, nY, pageItem->uncroppedWidth(), pageItem->uncroppedHeight() );
                        if ( rect )
                        {
                            // handle right click over a image
                        }
                        else
                        {
                            // right click (if not within 5 px of the press point, the mode
                            // had been already changed to 'Selection' instead of 'Normal')
                            emit rightClick( pageItem->page(), e->globalPos() );
                        }
                    }
                }
                else
                {
                    // right click (if not within 5 px of the press point, the mode
                    // had been already changed to 'Selection' instead of 'Normal')
                    emit rightClick( pageItem ? pageItem->page() : nullptr, e->globalPos() );
                }
            }
            }break;

        case Okular::Settings::EnumMouseMode::Zoom:
            // if a selection rect has been defined, zoom into it
            if ( leftButton && d->mouseSelecting )
            {
                QRect selRect = d->mouseSelectionRect.normalized();
                if ( selRect.width() <= 8 && selRect.height() <= 8 )
                {
                    selectionClear();
                    break;
                }

                // find out new zoom ratio and normalized view center (relative to the contentsRect)
                double zoom = qMin( (double)viewport()->width() / (double)selRect.width(), (double)viewport()->height() / (double)selRect.height() );
                double nX = (double)(selRect.left() + selRect.right()) / (2.0 * (double)contentAreaWidth());
                double nY = (double)(selRect.top() + selRect.bottom()) / (2.0 * (double)contentAreaHeight());

                const float upperZoomLimit = d->document->supportsTiles() ? 16.0 : 4.0;
                if ( d->zoomFactor <= upperZoomLimit || zoom <= 1.0 )
                {
                    d->zoomFactor *= zoom;
                    viewport()->setUpdatesEnabled( false );
                    updateZoom( ZoomRefreshCurrent );
                    viewport()->setUpdatesEnabled( true );
                }

                // recenter view and update the viewport
                center( (int)(nX * contentAreaWidth()), (int)(nY * contentAreaHeight()) );
                viewport()->update();

                // hide message box and delete overlay window
                selectionClear();
            }
            break;

        case Okular::Settings::EnumMouseMode::Magnifier:
            d->magnifierView->hide();
            break;

        case Okular::Settings::EnumMouseMode::TrimSelect:
        {
            // if it is a left release checks if is over a previous link press
            if ( leftButton && mouseReleaseOverLink ( d->mouseOverLinkObject ) ) {
                selectionClear();
                break;
            }

            // if mouse is released and selection is null this is a rightClick
            if ( rightButton && !d->mouseSelecting )
            {
                break;
            }
            PageViewItem * pageItem = pickItemOnPoint(eventPos.x(), eventPos.y());
            // ensure end point rests within a page, or ignore
            if (!pageItem) {
                break;
            }
            QRect selectionRect = d->mouseSelectionRect.normalized();

            double nLeft = pageItem->absToPageX(selectionRect.left());
            double nRight = pageItem->absToPageX(selectionRect.right());
            double nTop = pageItem->absToPageY(selectionRect.top());
            double nBottom = pageItem->absToPageY(selectionRect.bottom());
            if ( nLeft < 0 ) nLeft = 0;
            if ( nTop < 0 ) nTop = 0;
            if ( nRight > 1 ) nRight = 1;
            if ( nBottom > 1 ) nBottom = 1;
            d->trimBoundingBox = Okular::NormalizedRect(nLeft, nTop, nRight, nBottom);

            // Trim Selection successfully done, hide prompt
            d->messageWindow->hide();

            // clear widget selection and invalidate rect
            selectionClear();

            // When Trim selection bbox interaction is over, we should switch to another mousemode.
            if ( d->aPrevAction )
            {
                d->aPrevAction->trigger();
                d->aPrevAction = nullptr;
            } else {
                d->aMouseNormal->trigger();
            }

            // with d->trimBoundingBox defined, redraw for trim to take visual effect
            if ( d->document->pages() > 0 )
            {
                slotRelayoutPages();
                slotRequestVisiblePixmaps();  // TODO: slotRelayoutPages() may have done this already!
            }

            break;
        }
        case Okular::Settings::EnumMouseMode::RectSelect:
        {
            // if it is a left release checks if is over a previous link press
            if ( leftButton && mouseReleaseOverLink ( d->mouseOverLinkObject ) ) {
                selectionClear();
                break;
            }

            // if mouse is released and selection is null this is a rightClick
            if ( rightButton && !d->mouseSelecting )
            {
                PageViewItem * pageItem = pickItemOnPoint( eventPos.x(), eventPos.y() );
                emit rightClick( pageItem ? pageItem->page() : nullptr, e->globalPos() );
                break;
            }

            // if a selection is defined, display a popup
            if ( (!leftButton && !d->aPrevAction) || (!rightButton && d->aPrevAction) ||
                 !d->mouseSelecting )
                break;

            QRect selectionRect = d->mouseSelectionRect.normalized();
            if ( selectionRect.width() <= 8 && selectionRect.height() <= 8 )
            {
                selectionClear();
                if ( d->aPrevAction )
                {
                    d->aPrevAction->trigger();
                    d->aPrevAction = nullptr;
                }
                break;
            }

            // if we support text generation
            QString selectedText;
            if (d->document->supportsSearching())
            {
                // grab text in selection by extracting it from all intersected pages
                const Okular::Page * okularPage=nullptr;
                for ( const PageViewItem * item : qAsConst( d->items ) )
                {
                    if ( !item->isVisible() )
                        continue;

                    const QRect & itemRect = item->croppedGeometry();
                    if ( selectionRect.intersects( itemRect ) )
                    {
                        // request the textpage if there isn't one
                        okularPage= item->page();
                        qCDebug(OkularUiDebug) << "checking if page" << item->pageNumber() << "has text:" << okularPage->hasTextPage();
                        if ( !okularPage->hasTextPage() )
                            d->document->requestTextPage( okularPage->number() );
                        // grab text in the rect that intersects itemRect
                        QRect relativeRect = selectionRect.intersected( itemRect );
                        relativeRect.translate( -item->uncroppedGeometry().topLeft() );
                        Okular::RegularAreaRect rects;
                        rects.append( Okular::NormalizedRect( relativeRect, item->uncroppedWidth(), item->uncroppedHeight() ) );
                        selectedText += okularPage->text( &rects );
                    }
                }
            }

            // popup that ask to copy:text and copy/save:image
            QMenu menu( this );
            menu.setObjectName(QStringLiteral("PopupMenu"));
            QAction *textToClipboard = nullptr;
#ifdef HAVE_SPEECH
            QAction *speakText = nullptr;
#endif
            QAction *imageToClipboard = nullptr;
            QAction *imageToFile = nullptr;
            if ( d->document->supportsSearching() && !selectedText.isEmpty() )
            {
                menu.addAction( new OKMenuTitle( &menu, i18np( "Text (1 character)", "Text (%1 characters)", selectedText.length() ) ) );
                textToClipboard = menu.addAction( QIcon::fromTheme(QStringLiteral("edit-copy")), i18n( "Copy to Clipboard" ) );
                textToClipboard->setObjectName(QStringLiteral("CopyTextToClipboard"));
                bool copyAllowed = d->document->isAllowed( Okular::AllowCopy );
                if ( !copyAllowed )
                {
                    textToClipboard->setEnabled( false );
                    textToClipboard->setText( i18n("Copy forbidden by DRM") );
                }
#ifdef HAVE_SPEECH
                if ( Okular::Settings::useTTS() )
                    speakText = menu.addAction( QIcon::fromTheme(QStringLiteral("text-speak")), i18n( "Speak Text" ) );
#endif
                if ( copyAllowed )
                {
                    addWebShortcutsMenu( &menu, selectedText );
                }
            }
            menu.addAction( new OKMenuTitle( &menu, i18n( "Image (%1 by %2 pixels)", selectionRect.width(), selectionRect.height() ) ) );
            imageToClipboard = menu.addAction( QIcon::fromTheme(QStringLiteral("image-x-generic")), i18n( "Copy to Clipboard" ) );
            imageToFile = menu.addAction( QIcon::fromTheme(QStringLiteral("document-save")), i18n( "Save to File..." ) );
            QAction *choice = menu.exec( e->globalPos() );
            // check if the user really selected an action
            if ( choice )
            {
            // IMAGE operation chosen
            if ( choice == imageToClipboard || choice == imageToFile )
            {
                // renders page into a pixmap
                QPixmap copyPix( selectionRect.width(), selectionRect.height() );
                QPainter copyPainter( &copyPix );
                copyPainter.translate( -selectionRect.left(), -selectionRect.top() );
                drawDocumentOnPainter( selectionRect, &copyPainter );
                copyPainter.end();

                if ( choice == imageToClipboard )
                {
                    // [2] copy pixmap to clipboard
                    QClipboard *cb = QApplication::clipboard();
                    cb->setPixmap( copyPix, QClipboard::Clipboard );
                    if ( cb->supportsSelection() )
                        cb->setPixmap( copyPix, QClipboard::Selection );
                    d->messageWindow->display( i18n( "Image [%1x%2] copied to clipboard.", copyPix.width(), copyPix.height() ) );
                }
                else if ( choice == imageToFile )
                {
                    // [3] save pixmap to file
                    QString fileName = QFileDialog::getSaveFileName(this, i18n("Save file"), QString(), i18n("Images (*.png *.jpeg)"));
                    if ( fileName.isEmpty() )
                        d->messageWindow->display( i18n( "File not saved." ), QString(), PageViewMessage::Warning );
                    else
                    {
                        QMimeDatabase db;
                        QMimeType mime = db.mimeTypeForUrl( QUrl::fromLocalFile(fileName) );
                        QString type;
                        if ( !mime.isDefault() )
                            type = QStringLiteral("PNG");
                        else
                            type = mime.name().section( QLatin1Char('/'), -1 ).toUpper();
                        copyPix.save( fileName, qPrintable( type ) );
                        d->messageWindow->display( i18n( "Image [%1x%2] saved to %3 file.", copyPix.width(), copyPix.height(), type ) );
                    }
                }
            }
            // TEXT operation chosen
            else
            {
                if ( choice == textToClipboard )
                {
                    // [1] copy text to clipboard
                    QClipboard *cb = QApplication::clipboard();
                    cb->setText( selectedText, QClipboard::Clipboard );
                    if ( cb->supportsSelection() )
                        cb->setText( selectedText, QClipboard::Selection );
                }
#ifdef HAVE_SPEECH
                else if ( choice == speakText )
                {
                    // [2] speech selection using TTS
                    d->tts()->say( selectedText );
                }
#endif
            }
            }
            // clear widget selection and invalidate rect
            selectionClear();

            // restore previous action if came from it using right button
            if ( d->aPrevAction )
            {
                d->aPrevAction->trigger();
                d->aPrevAction = nullptr;
            }
            }break;

        case Okular::Settings::EnumMouseMode::TableSelect:
        {
            // if it is a left release checks if is over a previous link press
            if ( leftButton && mouseReleaseOverLink ( d->mouseOverLinkObject ) ) {
                selectionClear();
                break;
            }

            // if mouse is released and selection is null this is a rightClick
            if ( rightButton && !d->mouseSelecting )
            {
                PageViewItem * pageItem = pickItemOnPoint( eventPos.x(), eventPos.y() );
                emit rightClick( pageItem ? pageItem->page() : nullptr, e->globalPos() );
                break;
            }

            QRect selectionRect = d->mouseSelectionRect.normalized();
            if ( selectionRect.width() <= 8 && selectionRect.height() <= 8 && d->tableSelectionParts.isEmpty() )
            {
                selectionClear();
                if ( d->aPrevAction )
                {
                    d->aPrevAction->trigger();
                    d->aPrevAction = nullptr;
                }
                break;
            }

            if (d->mouseSelecting) {
                // break up the selection into page-relative pieces
                d->tableSelectionParts.clear();
                const Okular::Page * okularPage=nullptr;
                for ( PageViewItem * item : qAsConst( d->items ) )
                {
                    if ( !item->isVisible() )
                        continue;

                    const QRect & itemRect = item->croppedGeometry();
                    if ( selectionRect.intersects( itemRect ) )
                    {
                        // request the textpage if there isn't one
                        okularPage= item->page();
                        qCDebug(OkularUiDebug) << "checking if page" << item->pageNumber() << "has text:" << okularPage->hasTextPage();
                        if ( !okularPage->hasTextPage() )
                            d->document->requestTextPage( okularPage->number() );
                        // grab text in the rect that intersects itemRect
                        QRect rectInItem = selectionRect.intersected( itemRect );
                        rectInItem.translate( -item->uncroppedGeometry().topLeft() );
                        QRect rectInSelection = selectionRect.intersected( itemRect );
                        rectInSelection.translate( -selectionRect.topLeft() );
                        d->tableSelectionParts.append(
                            TableSelectionPart(
                                item,
                                Okular::NormalizedRect( rectInItem, item->uncroppedWidth(), item->uncroppedHeight() ),
                                Okular::NormalizedRect( rectInSelection, selectionRect.width(), selectionRect.height() )
                            )
                        );
                    }
                }

                QRect updatedRect = d->mouseSelectionRect.normalized().adjusted( 0, 0, 1, 1 );
                updatedRect.translate( -contentAreaPosition() );
                d->mouseSelecting = false;
                d->mouseSelectionRect.setCoords( 0, 0, 0, 0 );
                d->tableSelectionCols.clear();
                d->tableSelectionRows.clear();
                guessTableDividers();
                viewport()->update( updatedRect );
            }

            if ( !d->document->isAllowed( Okular::AllowCopy ) ) {
                d->messageWindow->display( i18n("Copy forbidden by DRM"), QString(), PageViewMessage::Info, -1 );
                break;
            }

            QString selText;
            QString selHtml;
            QList<double> xs = d->tableSelectionCols;
            QList<double> ys = d->tableSelectionRows;
            xs.prepend(0.0);
            xs.append(1.0);
            ys.prepend(0.0);
            ys.append(1.0);
            selHtml = QString::fromLatin1("<html><head>"
                      "<meta content=\"text/html; charset=utf-8\" http-equiv=\"Content-Type\">"
                      "</head><body><table>");
            for (int r=0; r+1<ys.length(); r++) {
                selHtml += QLatin1String("<tr>");
                for (int c=0; c+1<xs.length(); c++) {
                    Okular::NormalizedRect cell(xs[c], ys[r], xs[c+1], ys[r+1]);
                    if (c) selText += QLatin1Char('\t');
                    QString txt;
                    foreach (const TableSelectionPart &tsp, d->tableSelectionParts) {
                        // first, crop the cell to this part
                        if (!tsp.rectInSelection.intersects(cell))
                            continue;
                        Okular::NormalizedRect cellPart = tsp.rectInSelection & cell; // intersection

                        // second, convert it from table coordinates to part coordinates
                        cellPart.left -= tsp.rectInSelection.left;
                        cellPart.left /= (tsp.rectInSelection.right - tsp.rectInSelection.left);
                        cellPart.right -= tsp.rectInSelection.left;
                        cellPart.right /= (tsp.rectInSelection.right - tsp.rectInSelection.left);
                        cellPart.top -= tsp.rectInSelection.top;
                        cellPart.top /= (tsp.rectInSelection.bottom - tsp.rectInSelection.top);
                        cellPart.bottom -= tsp.rectInSelection.top;
                        cellPart.bottom /= (tsp.rectInSelection.bottom - tsp.rectInSelection.top);

                        // third, convert from part coordinates to item coordinates
                        cellPart.left *= (tsp.rectInItem.right - tsp.rectInItem.left);
                        cellPart.left += tsp.rectInItem.left;
                        cellPart.right *= (tsp.rectInItem.right - tsp.rectInItem.left);
                        cellPart.right += tsp.rectInItem.left;
                        cellPart.top *= (tsp.rectInItem.bottom - tsp.rectInItem.top);
                        cellPart.top += tsp.rectInItem.top;
                        cellPart.bottom *= (tsp.rectInItem.bottom - tsp.rectInItem.top);
                        cellPart.bottom += tsp.rectInItem.top;

                        // now get the text
                        Okular::RegularAreaRect rects;
                        rects.append( cellPart );
                        txt += tsp.item->page()->text( &rects, Okular::TextPage::CentralPixelTextAreaInclusionBehaviour );
                    }
                    QString html = txt;
                    selText += txt.replace(QLatin1Char('\n'), QLatin1Char(' '));
                    html.replace(QLatin1Char('&'), QLatin1String("&amp;")).replace(QLatin1Char('<'), QLatin1String("&lt;")).replace(QLatin1Char('>'), QLatin1String("&gt;"));
                    // Remove newlines, do not turn them into <br>, because
                    // Excel interprets <br> within cell as new cell...
                    html.replace(QLatin1Char('\n'), QLatin1String(" "));
                    selHtml += QStringLiteral("<td>") + html + QStringLiteral("</td>");
                }
                selText += QLatin1Char('\n');
                selHtml += QLatin1String("</tr>\n");
            }
            selHtml += QLatin1String("</table></body></html>\n");


            QClipboard *cb = QApplication::clipboard();
            QMimeData *md = new QMimeData();
            md->setText(selText);
            md->setHtml(selHtml);
            cb->setMimeData( md, QClipboard::Clipboard );
            if ( cb->supportsSelection() )
                cb->setMimeData( md, QClipboard::Selection );

        }break;
            case Okular::Settings::EnumMouseMode::TextSelect:
                // if it is a left release checks if is over a previous link press
                if ( leftButton && mouseReleaseOverLink ( d->mouseOverLinkObject ) ) {
                    selectionClear();
                    break;
                }

                if ( d->mouseTextSelecting )
                {
                    d->mouseTextSelecting = false;
//                    textSelectionClear();
                    if ( d->document->isAllowed( Okular::AllowCopy ) )
                    {
                        const QString text = d->selectedText();
                        if ( !text.isEmpty() )
                        {
                            QClipboard *cb = QApplication::clipboard();
                            if ( cb->supportsSelection() )
                                cb->setText( text, QClipboard::Selection );
                        }
                    }
                }
                else if ( !d->mousePressPos.isNull() && rightButton )
                {
                    PageViewItem* item = pickItemOnPoint(eventPos.x(),eventPos.y());
                    const Okular::Page *page;
                    //if there is text selected in the page
                    if (item)
                    {
                        QAction * httpLink = nullptr;
                        QAction * textToClipboard = nullptr;
                        QString url;

                        QMenu * menu = createProcessLinkMenu( item, eventPos );
                        const bool mouseClickOverLink = (menu != nullptr);
#ifdef HAVE_SPEECH
                        QAction *speakText = nullptr;
#endif
                        if ( (page = item->page())->textSelection() )
                        {
                            if ( !menu )
                            {
                                menu = new QMenu(this);
                            }
                            textToClipboard = menu->addAction( QIcon::fromTheme( QStringLiteral("edit-copy") ), i18n( "Copy Text" ) );

#ifdef HAVE_SPEECH
                            if ( Okular::Settings::useTTS() )
                                speakText = menu->addAction( QIcon::fromTheme( QStringLiteral("text-speak") ), i18n( "Speak Text" ) );
#endif
                            if ( !d->document->isAllowed( Okular::AllowCopy ) )
                            {
                                textToClipboard->setEnabled( false );
                                textToClipboard->setText( i18n("Copy forbidden by DRM") );
                            }
                            else
                            {
                                addWebShortcutsMenu( menu, d->selectedText() );
                            }

                            // if the right-click was over a link add "Follow This link" instead of "Go to"
                            if (!mouseClickOverLink)
                            {
                                url = UrlUtils::getUrl( d->selectedText() );
                                if ( !url.isEmpty() )
                                {
                                    const QString squeezedText = KStringHandler::rsqueeze( url, 30 );
                                    httpLink = menu->addAction( i18n( "Go to '%1'", squeezedText ) );
                                    httpLink->setObjectName(QStringLiteral("GoToAction"));
                                }
                            }
                        }

                        if ( menu ) {
                            menu->setObjectName(QStringLiteral("PopupMenu"));

                            QAction *choice = menu->exec( e->globalPos() );
                            // check if the user really selected an action
                            if ( choice )
                            {
                                if ( choice == textToClipboard )
                                    copyTextSelection();
#ifdef HAVE_SPEECH
                                else if ( choice == speakText )
                                {
                                    const QString text = d->selectedText();
                                    d->tts()->say( text );
                                }
#endif
                                else if ( choice == httpLink ) {
                                    new KRun( QUrl( url ), this );
                                }
                            }

                            menu->deleteLater();
                        }
                    }
                }
            break;
    }

    // reset mouse press / 'drag start' position
    d->mousePressPos = QPoint();
}

void PageView::guessTableDividers()
{
    QList< QPair<double, int> > colTicks, rowTicks, colSelectionTicks, rowSelectionTicks;

    foreach ( const TableSelectionPart& tsp, d->tableSelectionParts )
    {
        // add ticks for the edges of this area...
        colSelectionTicks.append( qMakePair( tsp.rectInSelection.left,   +1 ) );
        colSelectionTicks.append( qMakePair( tsp.rectInSelection.right,  -1 ) );
        rowSelectionTicks.append( qMakePair( tsp.rectInSelection.top,    +1 ) );
        rowSelectionTicks.append( qMakePair( tsp.rectInSelection.bottom, -1 ) );

        // get the words in this part
        Okular::RegularAreaRect rects;
        rects.append( tsp.rectInItem );
        const Okular::TextEntity::List words = tsp.item->page()->words( &rects, Okular::TextPage::CentralPixelTextAreaInclusionBehaviour );

        foreach (Okular::TextEntity *te, words)
        {
            if (te->text().isEmpty()) {
                delete te;
                continue;
            }

            Okular::NormalizedRect wordArea = *te->area();

            // convert it from item coordinates to part coordinates
            wordArea.left -= tsp.rectInItem.left;
            wordArea.left /= (tsp.rectInItem.right - tsp.rectInItem.left);
            wordArea.right -= tsp.rectInItem.left;
            wordArea.right /= (tsp.rectInItem.right - tsp.rectInItem.left);
            wordArea.top -= tsp.rectInItem.top;
            wordArea.top /= (tsp.rectInItem.bottom - tsp.rectInItem.top);
            wordArea.bottom -= tsp.rectInItem.top;
            wordArea.bottom /= (tsp.rectInItem.bottom - tsp.rectInItem.top);

            // convert from part coordinates to table coordinates
            wordArea.left *= (tsp.rectInSelection.right - tsp.rectInSelection.left);
            wordArea.left += tsp.rectInSelection.left;
            wordArea.right *= (tsp.rectInSelection.right - tsp.rectInSelection.left);
            wordArea.right += tsp.rectInSelection.left;
            wordArea.top *= (tsp.rectInSelection.bottom - tsp.rectInSelection.top);
            wordArea.top += tsp.rectInSelection.top;
            wordArea.bottom *= (tsp.rectInSelection.bottom - tsp.rectInSelection.top);
            wordArea.bottom += tsp.rectInSelection.top;

            // add to the ticks arrays...
            colTicks.append( qMakePair( wordArea.left,   +1) );
            colTicks.append( qMakePair( wordArea.right,  -1) );
            rowTicks.append( qMakePair( wordArea.top,    +1) );
            rowTicks.append( qMakePair( wordArea.bottom, -1) );

            delete te;
        }
    }

    int tally = 0;

    std::sort(colSelectionTicks.begin(), colSelectionTicks.end());
    std::sort(rowSelectionTicks.begin(), rowSelectionTicks.end());

    for (int i = 0; i < colSelectionTicks.length(); ++i)
    {
        tally += colSelectionTicks[i].second;
        if ( tally == 0 && i + 1 < colSelectionTicks.length() && colSelectionTicks[i+1].first != colSelectionTicks[i].first)
        {
            colTicks.append( qMakePair( colSelectionTicks[i].first,   +1 ) );
            colTicks.append( qMakePair( colSelectionTicks[i+1].first, -1 ) );
        }
    }
    Q_ASSERT( tally == 0 );

    for (int i = 0; i < rowSelectionTicks.length(); ++i)
    {
        tally += rowSelectionTicks[i].second;
        if ( tally == 0 && i + 1 < rowSelectionTicks.length() && rowSelectionTicks[i+1].first != rowSelectionTicks[i].first) {
            rowTicks.append( qMakePair( rowSelectionTicks[i].first,   +1 ) );
            rowTicks.append( qMakePair( rowSelectionTicks[i+1].first, -1 ) );
        }
    }
    Q_ASSERT( tally == 0 );

    std::sort(colTicks.begin(), colTicks.end());
    std::sort(rowTicks.begin(), rowTicks.end());

    for (int i = 0; i < colTicks.length(); ++i)
    {
        tally += colTicks[i].second;
        if ( tally == 0 && i + 1 < colTicks.length() && colTicks[i+1].first != colTicks[i].first)
        {
            d->tableSelectionCols.append( (colTicks[i].first+colTicks[i+1].first) / 2 );
            d->tableDividersGuessed = true;
        }
    }
    Q_ASSERT( tally == 0 );

    for (int i = 0; i < rowTicks.length(); ++i)
    {
        tally += rowTicks[i].second;
        if ( tally == 0 && i + 1 < rowTicks.length() && rowTicks[i+1].first != rowTicks[i].first)
        {
            d->tableSelectionRows.append( (rowTicks[i].first+rowTicks[i+1].first) / 2 );
            d->tableDividersGuessed = true;
        }
    }
    Q_ASSERT( tally == 0 );
}

void PageView::mouseDoubleClickEvent( QMouseEvent * e )
{
    d->controlWheelAccumulatedDelta = 0;

    if ( e->button() == Qt::LeftButton )
    {
        const QPoint eventPos = contentAreaPoint( e->pos() );
        PageViewItem * pageItem = pickItemOnPoint( eventPos.x(), eventPos.y() );
        if ( pageItem )
        {
            // find out normalized mouse coords inside current item
            double nX = pageItem->absToPageX(eventPos.x());
            double nY = pageItem->absToPageY(eventPos.y());

            if ( d->mouseMode == Okular::Settings::EnumMouseMode::TextSelect ) {
                textSelectionClear();

                Okular::RegularAreaRect *wordRect = pageItem->page()->wordAt( Okular::NormalizedPoint( nX, nY ) );
                if ( wordRect )
                {
                    // TODO words with hyphens across pages
                    d->document->setPageTextSelection( pageItem->pageNumber(), wordRect, palette().color( QPalette::Active, QPalette::Highlight ) );
                    d->pagesWithTextSelection << pageItem->pageNumber();
                    if ( d->document->isAllowed( Okular::AllowCopy ) )
                    {
                        const QString text = d->selectedText();
                        if ( !text.isEmpty() )
                        {
                            QClipboard *cb = QApplication::clipboard();
                            if ( cb->supportsSelection() )
                                cb->setText( text, QClipboard::Selection );
                        }
                    }
                    return;
                }
            }

            const QRect & itemRect = pageItem->uncroppedGeometry();
            Okular::Annotation * ann = nullptr;
            const Okular::ObjectRect * orect = pageItem->page()->objectRect( Okular::ObjectRect::OAnnotation, nX, nY, itemRect.width(), itemRect.height() );
            if ( orect )
                ann = ( (Okular::AnnotationObjectRect *)orect )->annotation();
            if ( ann && ann->subType() != Okular::Annotation::AWidget )
            {
                openAnnotationWindow( ann, pageItem->pageNumber() );
            }
        }
    }
}

void PageView::wheelEvent( QWheelEvent *e )
{
    // don't perform any mouse action when viewport is autoscrolling
    if ( d->viewportMoveActive )
        return;

    if ( !d->document->isOpened() )
    {
        QAbstractScrollArea::wheelEvent( e );
        return;
    }

    int delta = e->delta(),
        vScroll = verticalScrollBar()->value();
    e->accept();
    if ( (e->modifiers() & Qt::ControlModifier) == Qt::ControlModifier ) {
        d->controlWheelAccumulatedDelta += delta;
        if ( d->controlWheelAccumulatedDelta <= -QWheelEvent::DefaultDeltasPerStep )
        {
            slotZoomOut();
            d->controlWheelAccumulatedDelta = 0;
        }
        else if ( d->controlWheelAccumulatedDelta >= QWheelEvent::DefaultDeltasPerStep )
        {
            slotZoomIn();
            d->controlWheelAccumulatedDelta = 0;
        }
    }
    else
    {
        d->controlWheelAccumulatedDelta = 0;

        if ( delta <= -QWheelEvent::DefaultDeltasPerStep && !Okular::Settings::viewContinuous() && vScroll == verticalScrollBar()->maximum() )
        {
            // go to next page
            if ( (int)d->document->currentPage() < d->items.count() - 1 )
            {
                // more optimized than document->setNextPage and then move view to top
                Okular::DocumentViewport newViewport = d->document->viewport();
                newViewport.pageNumber += viewColumns();
                if ( newViewport.pageNumber >= (int)d->items.count() )
                    newViewport.pageNumber = d->items.count() - 1;
                newViewport.rePos.enabled = true;
                newViewport.rePos.normalizedY = 0.0;
                d->document->setViewport( newViewport );
            }
        }
        else if ( delta >= QWheelEvent::DefaultDeltasPerStep && !Okular::Settings::viewContinuous() && vScroll == verticalScrollBar()->minimum() )
        {
            // go to prev page
            if ( d->document->currentPage() > 0 )
            {
                // more optimized than document->setPrevPage and then move view to bottom
                Okular::DocumentViewport newViewport = d->document->viewport();
                newViewport.pageNumber -= viewColumns();
                if ( newViewport.pageNumber < 0 )
                    newViewport.pageNumber = 0;
                newViewport.rePos.enabled = true;
                newViewport.rePos.normalizedY = 1.0;
                d->document->setViewport( newViewport );
            }
        }
        else
            QAbstractScrollArea::wheelEvent( e );
    }

    updateCursor();
}

bool PageView::viewportEvent( QEvent * e )
{
    if ( e->type() == QEvent::ToolTip
        // Show tool tips only for those modes that change the cursor
        // to a hand when hovering over the link.
        && ( d->mouseMode == Okular::Settings::EnumMouseMode::Browse
          || d->mouseMode == Okular::Settings::EnumMouseMode::RectSelect
          || d->mouseMode == Okular::Settings::EnumMouseMode::TextSelect
          || d->mouseMode == Okular::Settings::EnumMouseMode::TrimSelect ) )
    {
        QHelpEvent * he = static_cast< QHelpEvent* >( e );
        if ( d->mouseAnnotation->isMouseOver() )
        {
            d->mouseAnnotation->routeTooltipEvent( he );
        }
        else
        {
            const QPoint eventPos = contentAreaPoint( he->pos() );
            PageViewItem * pageItem = pickItemOnPoint( eventPos.x(), eventPos.y() );
            const Okular::ObjectRect * rect = nullptr;
            const Okular::Action * link = nullptr;
            if ( pageItem )
            {
                double nX = pageItem->absToPageX( eventPos.x() );
                double nY = pageItem->absToPageY( eventPos.y() );
                rect = pageItem->page()->objectRect( Okular::ObjectRect::Action, nX, nY, pageItem->uncroppedWidth(), pageItem->uncroppedHeight() );
                if ( rect )
                    link = static_cast< const Okular::Action * >( rect->object() );
            }

            if ( link )
            {
                QRect r = rect->boundingRect( pageItem->uncroppedWidth(), pageItem->uncroppedHeight() );
                r.translate( pageItem->uncroppedGeometry().topLeft() );
                r.translate( -contentAreaPosition() );
                QString tip = link->actionTip();
                if ( !tip.isEmpty() )
                    QToolTip::showText( he->globalPos(), tip, viewport(), r );
            }
        }
        e->accept();
        return true;
    }
    else
        // do not stop the event
        return QAbstractScrollArea::viewportEvent( e );
}

void PageView::scrollContentsBy( int dx, int dy )
{
    const QRect r = viewport()->rect();
    viewport()->scroll( dx, dy, r );
    // HACK manually repaint the damaged regions, as it seems some updates are missed
    // thus leaving artifacts around
    QRegion rgn( r );
    rgn -= rgn & r.translated( dx, dy );
    foreach ( const QRect &rect, rgn.rects() )
        viewport()->repaint( rect );
}
//END widget events

QList< Okular::RegularAreaRect * > PageView::textSelections( const QPoint& start, const QPoint& end, int& firstpage )
{
    firstpage = -1;
    QList< Okular::RegularAreaRect * > ret;
    QSet< int > affectedItemsSet;
    QRect selectionRect = QRect( start, end ).normalized();
    foreach( PageViewItem * item, d->items )
    {
        if ( item->isVisible() && selectionRect.intersects( item->croppedGeometry() ) )
            affectedItemsSet.insert( item->pageNumber() );
    }
#ifdef PAGEVIEW_DEBUG
    qCDebug(OkularUiDebug) << ">>>> item selected by mouse:" << affectedItemsSet.count();
#endif

    if ( !affectedItemsSet.isEmpty() )
    {
        // is the mouse drag line the ne-sw diagonal of the selection rect?
        bool direction_ne_sw = start == selectionRect.topRight() || start == selectionRect.bottomLeft();

        int tmpmin = d->document->pages();
        int tmpmax = 0;
        foreach( int p, affectedItemsSet )
        {
            if ( p < tmpmin ) tmpmin = p;
            if ( p > tmpmax ) tmpmax = p;
        }

        PageViewItem * a = pickItemOnPoint( (int)( direction_ne_sw ? selectionRect.right() : selectionRect.left() ), (int)selectionRect.top() );
        int min = a && ( a->pageNumber() != tmpmax ) ? a->pageNumber() : tmpmin;
        PageViewItem * b = pickItemOnPoint( (int)( direction_ne_sw ? selectionRect.left() : selectionRect.right() ), (int)selectionRect.bottom() );
        int max = b && ( b->pageNumber() != tmpmin ) ? b->pageNumber() : tmpmax;

        QList< int > affectedItemsIds;
        for ( int i = min; i <= max; ++i )
            affectedItemsIds.append( i );
#ifdef PAGEVIEW_DEBUG
        qCDebug(OkularUiDebug) << ">>>> pages:" << affectedItemsIds;
#endif
        firstpage = affectedItemsIds.first();

        if ( affectedItemsIds.count() == 1 )
        {
            PageViewItem * item = d->items[ affectedItemsIds.first() ];
            selectionRect.translate( -item->uncroppedGeometry().topLeft() );
            ret.append( textSelectionForItem( item,
                direction_ne_sw ? selectionRect.topRight() : selectionRect.topLeft(),
                direction_ne_sw ? selectionRect.bottomLeft() : selectionRect.bottomRight() ) );
        }
        else if ( affectedItemsIds.count() > 1 )
        {
            // first item
            PageViewItem * first = d->items[ affectedItemsIds.first() ];
            QRect geom = first->croppedGeometry().intersected( selectionRect ).translated( -first->uncroppedGeometry().topLeft() );
            ret.append( textSelectionForItem( first,
                selectionRect.bottom() > geom.height() ? ( direction_ne_sw ? geom.topRight() : geom.topLeft() ) : ( direction_ne_sw ? geom.bottomRight() : geom.bottomLeft() ),
                QPoint() ) );
            // last item
            PageViewItem * last = d->items[ affectedItemsIds.last() ];
            geom = last->croppedGeometry().intersected( selectionRect ).translated( -last->uncroppedGeometry().topLeft() );
            // the last item needs to appended at last...
            Okular::RegularAreaRect * lastArea = textSelectionForItem( last,
                QPoint(),
                selectionRect.bottom() > geom.height() ? ( direction_ne_sw ? geom.bottomLeft() : geom.bottomRight() ) : ( direction_ne_sw ? geom.topLeft() : geom.topRight() ) );
            affectedItemsIds.removeFirst();
            affectedItemsIds.removeLast();
            // item between the two above
            foreach( int page, affectedItemsIds )
            {
                ret.append( textSelectionForItem( d->items[ page ] ) );
            }
            ret.append( lastArea );
        }
    }
    return ret;
}


void PageView::drawDocumentOnPainter( const QRect & contentsRect, QPainter * p )
{
    QColor backColor;

    if ( Okular::Settings::useCustomBackgroundColor() )
        backColor = Okular::Settings::backgroundColor();
    else
        backColor = viewport()->palette().color( QPalette::Dark );

    // create a region from which we'll subtract painted rects
    QRegion remainingArea( contentsRect );

    // This loop draws the actual pages
    // iterate over all items painting the ones intersecting contentsRect
    for ( const PageViewItem * item : qAsConst( d->items ) )
    {
        // check if a piece of the page intersects the contents rect
        if ( !item->isVisible() || !item->croppedGeometry().intersects( contentsRect ) )
            continue;

        // get item and item's outline geometries
        QRect itemGeometry = item->croppedGeometry();

        // move the painter to the top-left corner of the real page
        p->save();
        p->translate( itemGeometry.left(), itemGeometry.top() );

        // draw the page using the PagePainter with all flags active
        if ( contentsRect.intersects( itemGeometry ) )
        {
            Okular::NormalizedPoint *viewPortPoint = nullptr;
            Okular::NormalizedPoint point( d->lastSourceLocationViewportNormalizedX, d->lastSourceLocationViewportNormalizedY );
            if( Okular::Settings::showSourceLocationsGraphically()
                && item->pageNumber() ==  d->lastSourceLocationViewportPageNumber )
            {
                viewPortPoint = &point;
            }
            QRect pixmapRect = contentsRect.intersected( itemGeometry );
            pixmapRect.translate( -item->croppedGeometry().topLeft() );
            PagePainter::paintCroppedPageOnPainter( p, item->page(), this, pageflags,
                item->uncroppedWidth(), item->uncroppedHeight(), pixmapRect,
                item->crop(), viewPortPoint );
        }

        // remove painted area from 'remainingArea' and restore painter
        remainingArea -= itemGeometry;
        p->restore();
    }

    // fill the visible area around the page with the background color
    for (const QRect& backRect : remainingArea )
        p->fillRect( backRect, backColor );

    // take outline and shadow into account when testing whether a repaint is necessary
    auto dpr = devicePixelRatioF();
    QRect checkRect = contentsRect;
    checkRect.adjust( -3, -3, 1, 1 );

    // Method to linearly interpolate between black (=(0,0,0), omitted) and the background color
    auto interpolateColor = [&backColor]( double t )
    {
        return QColor( t*backColor.red(), t*backColor.green(), t*backColor.blue() );
    };

    // width of the shadow in device pixels
    static const int shadowWidth = 2*dpr;

    // iterate over all items painting a black outline and a simple bottom/right gradient
    for ( const PageViewItem * item : qAsConst( d->items ) )
    {
        // check if a piece of the page intersects the contents rect
        if ( !item->isVisible() || !item->croppedGeometry().intersects( checkRect ) )
            continue;

        // get item and item's outline geometries
        QRect itemGeometry = item->croppedGeometry();

        // move the painter to the top-left corner of the real page
        p->save();
        p->translate( itemGeometry.left(), itemGeometry.top() );

        // draw the page outline (black border and bottom-right shadow)
        if ( !itemGeometry.contains( contentsRect ) )
        {
            int itemWidth = itemGeometry.width();
            int itemHeight = itemGeometry.height();
            // draw simple outline
            QPen pen( Qt::black );
            pen.setWidth(0);
            p->setPen( pen );

            QRectF outline( -1.0/dpr, -1.0/dpr, itemWidth + 1.0/dpr, itemHeight + 1.0/dpr );
            p->drawRect( outline );

            // draw bottom/right gradient
            for ( int i = 1; i <= shadowWidth; i++ )
            {
                pen.setColor( interpolateColor( double(i)/( shadowWidth+1 ) ) );
                p->setPen( pen );
                QPointF left( (i-1)/dpr, itemHeight + i/dpr );
                QPointF up( itemWidth + i/dpr, (i-1)/dpr );
                QPointF corner( itemWidth + i/dpr, itemHeight + i/dpr);
                p->drawLine( left, corner );
                p->drawLine( up, corner );
            }
        }

        p->restore();
    }
}

void PageView::updateItemSize( PageViewItem * item, int colWidth, int rowHeight )
{
    const Okular::Page * okularPage = item->page();
    double width = okularPage->width(),
           height = okularPage->height(),
           zoom = d->zoomFactor;
    Okular::NormalizedRect crop( 0., 0., 1., 1. );

    // Handle cropping, due to either "Trim Margin" or "Trim to Selection" cases
    if (( Okular::Settings::trimMargins() && okularPage->isBoundingBoxKnown()
         && !okularPage->boundingBox().isNull() ) ||
        ( d->aTrimToSelection && d->aTrimToSelection->isChecked() &&  !d->trimBoundingBox.isNull()))
    {

        crop = Okular::Settings::trimMargins() ? okularPage->boundingBox() : d->trimBoundingBox;

        // Rotate the bounding box
        for ( int i = okularPage->rotation(); i > 0; --i )
        {
            Okular::NormalizedRect rot = crop;
            crop.left   = 1 - rot.bottom;
            crop.top    = rot.left;
            crop.right  = 1 - rot.top;
            crop.bottom = rot.right;
        }

        // Expand the crop slightly beyond the bounding box (for Trim Margins only)
        if (Okular::Settings::trimMargins()) {
            static const double cropExpandRatio = 0.04;
            const double cropExpand = cropExpandRatio * ( (crop.right-crop.left) + (crop.bottom-crop.top) ) / 2;
            crop = Okular::NormalizedRect(
                crop.left - cropExpand,
                crop.top - cropExpand,
                crop.right + cropExpand,
                crop.bottom + cropExpand ) & Okular::NormalizedRect( 0, 0, 1, 1 );
        }

        // We currently generate a larger image and then crop it, so if the
        // crop rect is very small the generated image is huge. Hence, we shouldn't
        // let the crop rect become too small.
        static double minCropRatio;
        if (Okular::Settings::trimMargins()) {
            // Make sure we crop by at most 50% in either dimension:
            minCropRatio = 0.5;
        } else {
            // Looser Constraint for "Trim Selection"
            minCropRatio = 0.20;
        }
        if ( ( crop.right - crop.left ) < minCropRatio )
        {
            const double newLeft = ( crop.left + crop.right ) / 2 - minCropRatio/2;
            crop.left = qMax( 0.0, qMin( 1.0 - minCropRatio, newLeft ) );
            crop.right = crop.left + minCropRatio;
        }
        if ( ( crop.bottom - crop.top ) < minCropRatio )
        {
            const double newTop = ( crop.top + crop.bottom ) / 2 - minCropRatio/2;
            crop.top = qMax( 0.0, qMin( 1.0 - minCropRatio, newTop ) );
            crop.bottom = crop.top + minCropRatio;
        }

        width *= ( crop.right - crop.left );
        height *= ( crop.bottom - crop.top );
#ifdef PAGEVIEW_DEBUG
        qCDebug(OkularUiDebug) << "Cropped page" << okularPage->number() << "to" << crop
                 << "width" << width << "height" << height << "by bbox" << okularPage->boundingBox();
#endif
    }

    if ( d->zoomMode == ZoomFixed )
    {
        width *= zoom;
        height *= zoom;
        item->setWHZC( (int)width, (int)height, d->zoomFactor, crop );
    }
    else if ( d->zoomMode == ZoomFitWidth )
    {
        height = ( height / width ) * colWidth;
        zoom = (double)colWidth / width;
        item->setWHZC( colWidth, (int)height, zoom, crop );
        if ((uint)item->pageNumber() == d->document->currentPage())
            d->zoomFactor = zoom;
    }
    else if ( d->zoomMode == ZoomFitPage )
    {
        const double scaleW = (double)colWidth / (double)width;
        const double scaleH = (double)rowHeight / (double)height;
        zoom = qMin( scaleW, scaleH );
        item->setWHZC( (int)(zoom * width), (int)(zoom * height), zoom, crop );
        if ((uint)item->pageNumber() == d->document->currentPage())
            d->zoomFactor = zoom;
    }
    else if ( d->zoomMode == ZoomFitAuto )
    {
        const double aspectRatioRelation = 1.25; // relation between aspect ratios for "auto fit"
        const double uiAspect = (double)rowHeight / (double)colWidth;
        const double pageAspect = (double)height / (double)width;
        const double rel = uiAspect / pageAspect;

        const bool isContinuous = Okular::Settings::viewContinuous();
        if ( !isContinuous && rel > aspectRatioRelation )
        {
            // UI space is relatively much higher than the page
            zoom = (double)rowHeight / (double)height;
        }
        else if ( rel < 1.0 / aspectRatioRelation )
        {
            // UI space is relatively much wider than the page in relation
            zoom = (double)colWidth / (double)width;
        }
        else
        {
            // aspect ratios of page and UI space are very similar
            const double scaleW = (double)colWidth / (double)width;
            const double scaleH = (double)rowHeight / (double)height;
            zoom = qMin( scaleW, scaleH );
        }
        item->setWHZC( (int)(zoom * width), (int)(zoom * height), zoom, crop );
        if ((uint)item->pageNumber() == d->document->currentPage())
            d->zoomFactor = zoom;
    }
#ifndef NDEBUG
    else
        qCDebug(OkularUiDebug) << "calling updateItemSize with unrecognized d->zoomMode!";
#endif
}

PageViewItem * PageView::pickItemOnPoint( int x, int y )
{
    PageViewItem * item = nullptr;
    for ( PageViewItem * i : qAsConst( d->visibleItems ) )
    {
        const QRect & r = i->croppedGeometry();
        if ( x < r.right() && x > r.left() && y < r.bottom() )
        {
            if ( y > r.top() )
                item = i;
            break;
        }
    }
    return item;
}

void PageView::textSelectionClear()
{
   // something to clear
    if ( !d->pagesWithTextSelection.isEmpty() )
    {
        for ( const int page : qAsConst( d->pagesWithTextSelection ) )
            d->document->setPageTextSelection( page, nullptr, QColor() );
        d->pagesWithTextSelection.clear();
    }
}

void PageView::selectionStart( const QPoint & pos, const QColor & color, bool /*aboveAll*/ )
{
    selectionClear();
    d->mouseSelecting = true;
    d->mouseSelectionRect.setRect( pos.x(), pos.y(), 1, 1 );
    d->mouseSelectionColor = color;
    // ensures page doesn't scroll
    if ( d->autoScrollTimer )
    {
        d->scrollIncrement = 0;
        d->autoScrollTimer->stop();
    }
}

void PageView::scrollPosIntoView( const QPoint & pos )
{
    // this number slows the speed of the page by its value, chosen not to be too fast or too slow, the actual speed is determined from the mouse position, not critical
    const int damping=6; 

    if (pos.x() < horizontalScrollBar()->value()) d->dragScrollVector.setX((pos.x() - horizontalScrollBar()->value())/damping);
    else if (horizontalScrollBar()->value() + viewport()->width() < pos.x()) d->dragScrollVector.setX((pos.x() - horizontalScrollBar()->value() - viewport()->width())/damping);
    else d->dragScrollVector.setX(0);

    if (pos.y() < verticalScrollBar()->value()) d->dragScrollVector.setY((pos.y() - verticalScrollBar()->value())/damping);
    else if (verticalScrollBar()->value() + viewport()->height() < pos.y()) d->dragScrollVector.setY((pos.y() - verticalScrollBar()->value() - viewport()->height())/damping);
    else d->dragScrollVector.setY(0);

    if (d->dragScrollVector != QPoint(0, 0))
    {
        if (!d->dragScrollTimer.isActive()) d->dragScrollTimer.start(1000/60); //60 fps
    }
    else d->dragScrollTimer.stop();
}

QPoint PageView::viewportToContentArea( const Okular::DocumentViewport & vp ) const {
    Q_ASSERT( vp.pageNumber >= 0 );

    const QRect & r = d->items[ vp.pageNumber ]->croppedGeometry();
    QPoint c { r.left(), r.top() };

    if ( vp.rePos.enabled )
    {
        if ( vp.rePos.pos == Okular::DocumentViewport::Center )
        {
            c.rx() += qRound( normClamp( vp.rePos.normalizedX, 0.5 ) * (double)r.width() );
            c.ry() += qRound( normClamp( vp.rePos.normalizedY, 0.0 ) * (double)r.height() );
        }
        else
        {
            // TopLeft
            c.rx() += qRound( normClamp( vp.rePos.normalizedX, 0.0 ) * (double)r.width() + viewport()->width() / 2 );
            c.ry() += qRound( normClamp( vp.rePos.normalizedY, 0.0 ) * (double)r.height() + viewport()->height() / 2 );
        }
    }
    else
    {
        // exact repositioning disabled, align page top margin with viewport top border by default
        c.rx() += r.width() / 2;
        c.ry() += viewport()->height() / 2 - 10;
    }
    return c;
}

void PageView::updateSelection( const QPoint & pos )
{
    if ( d->mouseSelecting )
    {
        scrollPosIntoView( pos );
        // update the selection rect
        QRect updateRect = d->mouseSelectionRect;
        d->mouseSelectionRect.setBottomLeft( pos );
        updateRect |= d->mouseSelectionRect;
        updateRect.translate( -contentAreaPosition() );
        viewport()->update( updateRect.adjusted( -1, -2, 2, 1 ) );
    }
    else if ( d->mouseTextSelecting)
    {
        scrollPosIntoView( pos );
        int first = -1;
        const QList< Okular::RegularAreaRect * > selections = textSelections( pos, d->mouseSelectPos, first );
        QSet< int > pagesWithSelectionSet;
        for ( int i = 0; i < selections.count(); ++i )
            pagesWithSelectionSet.insert( i + first );

        const QSet< int > noMoreSelectedPages = d->pagesWithTextSelection - pagesWithSelectionSet;
        // clear the selection from pages not selected anymore
        foreach( int p, noMoreSelectedPages )
        {
            d->document->setPageTextSelection( p, nullptr, QColor() );
        }
        // set the new selection for the selected pages
        foreach( int p, pagesWithSelectionSet )
        {
            d->document->setPageTextSelection( p, selections[ p - first ], palette().color( QPalette::Active, QPalette::Highlight ) );
        }
        d->pagesWithTextSelection = pagesWithSelectionSet;
    }
}

static Okular::NormalizedPoint rotateInNormRect( const QPoint &rotated, const QRect &rect, Okular::Rotation rotation )
{
    Okular::NormalizedPoint ret;

    switch ( rotation )
    {
        case Okular::Rotation0:
            ret = Okular::NormalizedPoint( rotated.x(), rotated.y(), rect.width(), rect.height() );
            break;
        case Okular::Rotation90:
            ret = Okular::NormalizedPoint( rotated.y(), rect.width() - rotated.x(), rect.height(), rect.width() );
            break;
        case Okular::Rotation180:
            ret = Okular::NormalizedPoint( rect.width() - rotated.x(), rect.height() - rotated.y(), rect.width(), rect.height() );
            break;
        case Okular::Rotation270:
            ret = Okular::NormalizedPoint( rect.height() - rotated.y(), rotated.x(), rect.height(), rect.width() );
            break;
    }

    return ret;
}

Okular::RegularAreaRect * PageView::textSelectionForItem( const PageViewItem * item, const QPoint & startPoint, const QPoint & endPoint )
{
    const QRect & geometry = item->uncroppedGeometry();
    Okular::NormalizedPoint startCursor( 0.0, 0.0 );
    if ( !startPoint.isNull() )
    {
        startCursor = rotateInNormRect( startPoint, geometry, item->page()->rotation() );
    }
    Okular::NormalizedPoint endCursor( 1.0, 1.0 );
    if ( !endPoint.isNull() )
    {
        endCursor = rotateInNormRect( endPoint, geometry, item->page()->rotation() );
    }
    Okular::TextSelection mouseTextSelectionInfo( startCursor, endCursor );

    const Okular::Page * okularPage = item->page();

    if ( !okularPage->hasTextPage() )
        d->document->requestTextPage( okularPage->number() );

    Okular::RegularAreaRect * selectionArea = okularPage->textArea( &mouseTextSelectionInfo );
#ifdef PAGEVIEW_DEBUG
    qCDebug(OkularUiDebug).nospace() << "text areas (" << okularPage->number() << "): " << ( selectionArea ? QString::number( selectionArea->count() ) : "(none)" );
#endif
    return selectionArea;
}

void PageView::selectionClear(const ClearMode mode)
{
    QRect updatedRect = d->mouseSelectionRect.normalized().adjusted( -2, -2, 2, 2 );
    d->mouseSelecting = false;
    d->mouseSelectionRect.setCoords( 0, 0, 0, 0 );
    d->tableSelectionCols.clear();
    d->tableSelectionRows.clear();
    d->tableDividersGuessed = false;
    foreach (const TableSelectionPart &tsp, d->tableSelectionParts) {
        QRect selectionPartRect = tsp.rectInItem.geometry(tsp.item->uncroppedWidth(), tsp.item->uncroppedHeight());
        selectionPartRect.translate( tsp.item->uncroppedGeometry().topLeft () );
        // should check whether this is on-screen here?
        updatedRect = updatedRect.united(selectionPartRect);
    }
    if ( mode != ClearOnlyDividers ) {
        d->tableSelectionParts.clear();
    }
    d->tableSelectionParts.clear();
    updatedRect.translate( -contentAreaPosition() );
    viewport()->update( updatedRect );
}

// const to be used for both zoomFactorFitMode function and slotRelayoutPages.
static const int kcolWidthMargin = 6;
static const int krowHeightMargin = 12;

double PageView::zoomFactorFitMode( ZoomMode mode )
{
    const int pageCount = d->items.count();
    if ( pageCount == 0 )
        return 0;
    const bool facingCentered = Okular::Settings::viewMode() == Okular::Settings::EnumViewMode::FacingFirstCentered || (Okular::Settings::viewMode() == Okular::Settings::EnumViewMode::Facing && pageCount == 1);
    const bool overrideCentering = facingCentered && pageCount < 3;
    const int nCols = overrideCentering ? 1 : viewColumns();
    const double colWidth = viewport()->width() / nCols - kcolWidthMargin;
    const double rowHeight = viewport()->height() - krowHeightMargin;
    const PageViewItem * currentItem = d->items[ qMax( 0, (int)d->document->currentPage()) ];
    // prevent segmentation fault when opening a new document;
    if ( !currentItem )
        return 0;
    const Okular::Page * okularPage = currentItem->page();
    const double width = okularPage->width(), height = okularPage->height();
    if ( mode == ZoomFitWidth )
        return (double) colWidth / width;
    if ( mode == ZoomFitPage )
    {
        const double scaleW = (double) colWidth / (double)width;
        const double scaleH = (double) rowHeight / (double)height;
        return qMin(scaleW, scaleH);
    }
    return 0;
}

void PageView::updateZoom( ZoomMode newZoomMode )
{
    if ( newZoomMode == ZoomFixed )
    {
        if ( d->aZoom->currentItem() == 0 )
            newZoomMode = ZoomFitWidth;
        else if ( d->aZoom->currentItem() == 1 )
            newZoomMode = ZoomFitPage;
        else if ( d->aZoom->currentItem() == 2 )
            newZoomMode = ZoomFitAuto;
    }

    float newFactor = d->zoomFactor;
    QAction * checkedZoomAction = nullptr;
    switch ( newZoomMode )
    {
        case ZoomFixed:{ //ZoomFixed case
            QString z = d->aZoom->currentText();
            // kdelibs4 sometimes adds accelerators to actions' text directly :(
            z.remove (QLatin1Char('&'));
            z.remove (QLatin1Char('%'));
            newFactor = QLocale().toDouble( z ) / 100.0;
            }break;
        case ZoomIn:
        case ZoomOut:{
            const float zoomFactorFitWidth = zoomFactorFitMode(ZoomFitWidth);
            const float zoomFactorFitPage = zoomFactorFitMode(ZoomFitPage);
            QVector<float> zoomValue(15);
            qCopy(kZoomValues, kZoomValues + 13, zoomValue.begin());
            zoomValue[13] = zoomFactorFitWidth;
            zoomValue[14] = zoomFactorFitPage;
            std::sort(zoomValue.begin(), zoomValue.end());
            QVector<float>::iterator i;
            if ( newZoomMode == ZoomOut )
            {
                if (newFactor <= zoomValue.first())
                    return;
                i = qLowerBound(zoomValue.begin(), zoomValue.end(), newFactor) - 1;
            }
            else
            {
                if (newFactor >= zoomValue.last())
                    return;
                i = qUpperBound(zoomValue.begin(), zoomValue.end(), newFactor);
            }
            const float tmpFactor = *i;
            if ( tmpFactor == zoomFactorFitWidth )
            {
                newZoomMode = ZoomFitWidth;
                checkedZoomAction = d->aZoomFitWidth;
            }
            else if ( tmpFactor == zoomFactorFitPage )
            {
                newZoomMode = ZoomFitPage;
                checkedZoomAction = d->aZoomFitPage;
            }
            else
            {
                newFactor = tmpFactor;
                newZoomMode = ZoomFixed;
            }
            }
            break;
        case ZoomActual:
            newZoomMode = ZoomFixed;
            newFactor = 1.0;
            break;
        case ZoomFitWidth:
            checkedZoomAction = d->aZoomFitWidth;
            break;
        case ZoomFitPage:
            checkedZoomAction = d->aZoomFitPage;
            break;
        case ZoomFitAuto:
            checkedZoomAction = d->aZoomAutoFit;
            break;
        case ZoomRefreshCurrent:
            newZoomMode = ZoomFixed;
            d->zoomFactor = -1;
            break;
    }
    const float upperZoomLimit = d->document->supportsTiles() ? 16.0 : 4.0;
    if ( newFactor > upperZoomLimit )
        newFactor = upperZoomLimit;
    if ( newFactor < 0.1 )
        newFactor = 0.1;

    if ( newZoomMode != d->zoomMode || (newZoomMode == ZoomFixed && newFactor != d->zoomFactor ) )
    {
        // rebuild layout and update the whole viewport
        d->zoomMode = newZoomMode;
        d->zoomFactor = newFactor;
        // be sure to block updates to document's viewport
        bool prevState = d->blockViewport;
        d->blockViewport = true;
        slotRelayoutPages();
        d->blockViewport = prevState;
        // request pixmaps
        slotRequestVisiblePixmaps();
        // update zoom text
        updateZoomText();
        // update actions checked state
        if ( d->aZoomFitWidth )
        {
            d->aZoomFitWidth->setChecked( checkedZoomAction == d->aZoomFitWidth );
            d->aZoomFitPage->setChecked( checkedZoomAction == d->aZoomFitPage );
            d->aZoomAutoFit->setChecked( checkedZoomAction == d->aZoomAutoFit );
        }
    }
    else if ( newZoomMode == ZoomFixed && newFactor == d->zoomFactor )
        updateZoomText();

    d->aZoomIn->setEnabled( d->zoomFactor < upperZoomLimit-0.001 );
    d->aZoomOut->setEnabled( d->zoomFactor > 0.101 );
    d->aZoomActual->setEnabled( d->zoomFactor != 1.0 );
}

void PageView::updateZoomText()
{
    // use current page zoom as zoomFactor if in ZoomFit/* mode
    if ( d->zoomMode != ZoomFixed && d->items.count() > 0 )
        d->zoomFactor = d->items[ qMax( 0, (int)d->document->currentPage() ) ]->zoomFactor();
    float newFactor = d->zoomFactor;
    d->aZoom->removeAllActions();

    // add items that describe fit actions
    QStringList translated;
    translated << i18n("Fit Width") << i18n("Fit Page") << i18n("Auto Fit");

    // add percent items
    int idx = 0, selIdx = 3;
    bool inserted = false; //use: "d->zoomMode != ZoomFixed" to hide Fit/* zoom ratio
    int zoomValueCount = 11;
    if ( d->document->supportsTiles() )
        zoomValueCount = 13;
    while ( idx < zoomValueCount || !inserted )
    {
        float value = idx < zoomValueCount ? kZoomValues[ idx ] : newFactor;
        if ( !inserted && newFactor < (value - 0.0001) )
            value = newFactor;
        else
            idx ++;
        if ( value > (newFactor - 0.0001) && value < (newFactor + 0.0001) )
            inserted = true;
        if ( !inserted )
            selIdx++;
        // we do not need to display 2-digit precision
        QString localValue( QLocale().toString( value * 100.0, 'f', 1 ) );
        localValue.remove( QLocale().decimalPoint() + QLatin1Char('0') );
        // remove a trailing zero in numbers like 66.70
        if ( localValue.right( 1 ) == QLatin1String( "0" ) && localValue.indexOf( QLocale().decimalPoint() ) > -1 )
            localValue.chop( 1 );
        translated << QStringLiteral( "%1%" ).arg( localValue );
    }
    d->aZoom->setItems( translated );

    // select current item in list
    if ( d->zoomMode == ZoomFitWidth )
        selIdx = 0;
    else if ( d->zoomMode == ZoomFitPage )
        selIdx = 1;
    else if ( d->zoomMode == ZoomFitAuto )
        selIdx = 2;
    // we have to temporarily enable the actions as otherwise we can't set a new current item
    d->aZoom->setEnabled( true );
    d->aZoom->selectableActionGroup()->setEnabled( true );
    d->aZoom->setCurrentItem( selIdx );
    d->aZoom->setEnabled( d->items.size() > 0 );
    d->aZoom->selectableActionGroup()->setEnabled( d->items.size() > 0 );
}

void PageView::updateCursor()
{
    const QPoint p = contentAreaPosition() + viewport()->mapFromGlobal( QCursor::pos() );
    updateCursor( p );
}

void PageView::updateCursor( const QPoint &p )
{
    // reset mouse over link it will be re-set if that still valid
    d->mouseOverLinkObject = nullptr;

    // detect the underlaying page (if present)
    PageViewItem * pageItem = pickItemOnPoint( p.x(), p.y() );

    if ( d->annotator && d->annotator->active() )
    {
        if ( pageItem || d->annotator->annotating() )
            setCursor( d->annotator->cursor() );
        else
            setCursor( Qt::ForbiddenCursor );
    }
    else if ( pageItem )
    {
        double nX = pageItem->absToPageX(p.x());
        double nY = pageItem->absToPageY(p.y());
        Qt::CursorShape cursorShapeFallback;

        // if over a ObjectRect (of type Link) change cursor to hand
        switch ( d->mouseMode )
        {
        case Okular::Settings::EnumMouseMode::TextSelect:
            if (d->mouseTextSelecting)
            {
                setCursor( Qt::IBeamCursor );
                return;
            }
            cursorShapeFallback = Qt::IBeamCursor;
            break;
        case Okular::Settings::EnumMouseMode::Magnifier:
            setCursor( Qt::CrossCursor );
            return;
        case Okular::Settings::EnumMouseMode::RectSelect:
        case Okular::Settings::EnumMouseMode::TrimSelect:
            if (d->mouseSelecting)
            {
                setCursor( Qt::CrossCursor );
                return;
            }
            cursorShapeFallback = Qt::CrossCursor;
            break;
        case Okular::Settings::EnumMouseMode::Browse:
            d->mouseOnRect = false;
            if ( d->mouseAnnotation->isMouseOver() )
            {
                d->mouseOnRect = true;
                setCursor( d->mouseAnnotation->cursor() );
                return;
            }
            else
            {
                cursorShapeFallback = Qt::OpenHandCursor;
            }
            break;
        default:
            setCursor( Qt::ArrowCursor );
            return;
        }

        const Okular::ObjectRect * linkobj = pageItem->page()->objectRect( Okular::ObjectRect::Action, nX, nY, pageItem->uncroppedWidth(), pageItem->uncroppedHeight() );
        if ( linkobj )
        {
            d->mouseOverLinkObject = linkobj;
            d->mouseOnRect = true;
            setCursor( Qt::PointingHandCursor );
        }
        else
        {
            setCursor(cursorShapeFallback);
        }
    }
    else
    {
        // if there's no page over the cursor and we were showing the pointingHandCursor
        // go back to the normal one
        d->mouseOnRect = false;
        setCursor( Qt::ArrowCursor );
    }
}

void PageView::reloadForms()
{
    if( d->m_formsVisible )
    {
        for ( PageViewItem * item : qAsConst( d->visibleItems ) )
        {
            item->reloadFormWidgetsState();
        }
    }

}

void PageView::moveMagnifier( const QPoint& p ) // non scaled point
{
    const int w = d->magnifierView->width() * 0.5;
    const int h = d->magnifierView->height() * 0.5;

    int x = p.x() - w;
    int y = p.y() - h;

    const int max_x = viewport()->width();
    const int max_y = viewport()->height();

    QPoint scroll(0,0);

    if (x < 0)
    {
        if (horizontalScrollBar()->value() > 0) scroll.setX(x - w);
        x = 0;
    }

    if (y < 0)
    {
        if (verticalScrollBar()->value() > 0) scroll.setY(y - h);
        y = 0;
    }

    if (p.x() + w > max_x)
    {
        if (horizontalScrollBar()->value() < horizontalScrollBar()->maximum()) scroll.setX(p.x() + 2 * w - max_x);
        x = max_x - d->magnifierView->width() - 1;
    }

    if (p.y() + h > max_y)
    {
        if (verticalScrollBar()->value() < verticalScrollBar()->maximum()) scroll.setY(p.y() + 2 * h - max_y);
        y = max_y - d->magnifierView->height() - 1;
    }

    if (!scroll.isNull())
        scrollPosIntoView(contentAreaPoint(p + scroll));

    d->magnifierView->move(x, y);
}

void PageView::updateMagnifier( const QPoint& p ) // scaled point
{
    /* translate mouse coordinates to page coordinates and inform the magnifier of the situation */
    PageViewItem *item = pickItemOnPoint(p.x(), p.y());
    if (item)
    {
        Okular::NormalizedPoint np(item->absToPageX(p.x()), item->absToPageY(p.y()));
        d->magnifierView->updateView( np, item->page() );
    }
}

int PageView::viewColumns() const
{
    int vm = Okular::Settings::viewMode();
    if (vm == Okular::Settings::EnumViewMode::Single) return 1;
    else if (vm == Okular::Settings::EnumViewMode::Facing ||
             vm == Okular::Settings::EnumViewMode::FacingFirstCentered) return 2;
    else if (vm == Okular::Settings::EnumViewMode::Summary
            && d->document->pages() < Okular::Settings::viewColumns() )
            return d->document->pages();
    else return Okular::Settings::viewColumns();
}

void PageView::center(int cx, int cy)
{
    scrollTo( cx - viewport()->width() / 2, cy - viewport()->height() / 2 );
}

void PageView::scrollTo( int x, int y )
{
    bool prevState = d->blockPixmapsRequest;

    int newValue = -1;
    if ( x != horizontalScrollBar()->value() || y != verticalScrollBar()->value() )
        newValue = 1; // Pretend this call is the result of a scrollbar event

    d->blockPixmapsRequest = true;
    horizontalScrollBar()->setValue( x );
    verticalScrollBar()->setValue( y );

    d->blockPixmapsRequest = prevState;

    slotRequestVisiblePixmaps( newValue );
}

void PageView::toggleFormWidgets( bool on )
{
    bool somehadfocus = false;
    for ( PageViewItem * item : qAsConst( d->items ) )
    {
        const bool hadfocus = item->setFormWidgetsVisible( on );
        somehadfocus = somehadfocus || hadfocus;
    }
    if ( somehadfocus )
        setFocus();
    d->m_formsVisible = on;
    if ( d->aToggleForms ) // it may not exist if we are on dummy mode
    {
        if ( d->m_formsVisible )
        {
            d->aToggleForms->setText( i18n( "Hide Forms" ) );
        }
        else
        {
            d->aToggleForms->setText( i18n( "Show Forms" ) );
        }
    }
}

void PageView::resizeContentArea( const QSize & newSize )
{
    const QSize vs = viewport()->size();
    int hRange = newSize.width() - vs.width();
    int vRange = newSize.height() - vs.height();
    if ( horizontalScrollBar()->isVisible() && hRange == verticalScrollBar()->width() && verticalScrollBar()->isVisible() && vRange == horizontalScrollBar()->height() && Okular::Settings::showScrollBars() )
    {
        hRange = 0;
        vRange = 0;
    }
    horizontalScrollBar()->setRange( 0, hRange );
    verticalScrollBar()->setRange( 0, vRange );
    updatePageStep();
}

void PageView::updatePageStep() {
    const QSize vs = viewport()->size();
    horizontalScrollBar()->setPageStep( vs.width() );
    verticalScrollBar()->setPageStep( vs.height() * (100 - Okular::Settings::scrollOverlap()) / 100 );
}

void PageView::addWebShortcutsMenu( QMenu * menu, const QString & text )
{
    if ( text.isEmpty() )
    {
        return;
    }

    QString searchText = text;
    searchText = searchText.replace( QLatin1Char('\n'), QLatin1Char(' ') ).replace(QLatin1Char( '\r'), QLatin1Char(' ') ).simplified();

    if ( searchText.isEmpty() )
    {
        return;
    }

    KUriFilterData filterData( searchText );

    filterData.setSearchFilteringOptions( KUriFilterData::RetrievePreferredSearchProvidersOnly );

    if ( KUriFilter::self()->filterSearchUri( filterData, KUriFilter::NormalTextFilter ) )
    {
        const QStringList searchProviders = filterData.preferredSearchProviders();

        if ( !searchProviders.isEmpty() )
        {
            QMenu *webShortcutsMenu = new QMenu( menu );
            webShortcutsMenu->setIcon( QIcon::fromTheme( QStringLiteral("preferences-web-browser-shortcuts") ) );

            const QString squeezedText = KStringHandler::rsqueeze( searchText, 21 );
            webShortcutsMenu->setTitle( i18n( "Search for '%1' with", squeezedText ) );

            QAction *action = nullptr;

            foreach( const QString &searchProvider, searchProviders )
            {
                action = new QAction( searchProvider, webShortcutsMenu );
                action->setIcon( QIcon::fromTheme( filterData.iconNameForPreferredSearchProvider( searchProvider ) ) );
                action->setData( filterData.queryForPreferredSearchProvider( searchProvider ) );
                connect( action, &QAction::triggered, this, &PageView::slotHandleWebShortcutAction );
                webShortcutsMenu->addAction( action );
            }

            webShortcutsMenu->addSeparator();

            action = new QAction( i18n( "Configure Web Shortcuts..." ), webShortcutsMenu );
            action->setIcon( QIcon::fromTheme( QStringLiteral("configure") ) );
            connect( action, &QAction::triggered, this, &PageView::slotConfigureWebShortcuts );
            webShortcutsMenu->addAction( action );

            menu->addMenu(webShortcutsMenu);
        }
    }
}

QMenu* PageView::createProcessLinkMenu(PageViewItem *item, const QPoint &eventPos)
{
    // check if the right-click was over a link
    const double nX = item->absToPageX(eventPos.x());
    const double nY = item->absToPageY(eventPos.y());
    const Okular::ObjectRect * rect = item->page()->objectRect( Okular::ObjectRect::Action, nX, nY, item->uncroppedWidth(), item->uncroppedHeight() );
    if ( rect )
    {
        const Okular::Action * link = static_cast< const Okular::Action * >( rect->object() );

        if (!link)
            return nullptr;

        QMenu *menu = new QMenu(this);

        // creating the menu and its actions
        QAction * processLink = menu->addAction( i18n( "Follow This Link" ) );
        processLink->setObjectName(QStringLiteral("ProcessLinkAction"));
        if ( link->actionType() == Okular::Action::Sound ) {
            processLink->setText( i18n( "Play this Sound" ) );
            if ( Okular::AudioPlayer::instance()->state() == Okular::AudioPlayer::PlayingState ) {
                QAction * actStopSound = menu->addAction( i18n( "Stop Sound" ) );
                connect( actStopSound, &QAction::triggered, []() {
                    Okular::AudioPlayer::instance()->stopPlaybacks();
                });
            }
        }


        if ( dynamic_cast< const Okular::BrowseAction * >( link ) )
        {
            QAction * actCopyLinkLocation = menu->addAction( QIcon::fromTheme( QStringLiteral("edit-copy") ), i18n( "Copy Link Address" ) );
            actCopyLinkLocation->setObjectName(QStringLiteral("CopyLinkLocationAction"));
            connect( actCopyLinkLocation, &QAction::triggered, [ link ]() {
                const Okular::BrowseAction * browseLink = static_cast< const Okular::BrowseAction * >( link );
                QClipboard *cb = QApplication::clipboard();
                cb->setText( browseLink->url().toDisplayString(), QClipboard::Clipboard );
                if ( cb->supportsSelection() )
                    cb->setText( browseLink->url().toDisplayString(), QClipboard::Selection );
            } );
        }

        connect( processLink, &QAction::triggered, [this, link]() {
            d->document->processAction( link );
        });
        return menu;
    }
    return nullptr;
}

//BEGIN private SLOTS
void PageView::slotRelayoutPages()
// called by: notifySetup, viewportResizeEvent, slotViewMode, slotContinuousToggled, updateZoom
{
    // set an empty container if we have no pages
    const int pageCount = d->items.count();
    if ( pageCount < 1 )
    {
        return;
    }

    // if viewport was auto-moving, stop it
    if ( d->viewportMoveActive )
    {
        center( d->viewportMoveDest.x(), d->viewportMoveDest.y() );
        d->viewportMoveActive = false;
        d->viewportMoveTimer->stop();
        verticalScrollBar()->setEnabled( true );
        horizontalScrollBar()->setEnabled( true );
    }

    int viewportWidth = viewport()->width(),
        viewportHeight = viewport()->height(),
        fullWidth = 0,
        fullHeight = 0;

    // handle the 'center first page in row' stuff
    const bool facing = Okular::Settings::viewMode() == Okular::Settings::EnumViewMode::Facing && pageCount > 1;
    const bool facingCentered = Okular::Settings::viewMode() == Okular::Settings::EnumViewMode::FacingFirstCentered ||
                               (Okular::Settings::viewMode() == Okular::Settings::EnumViewMode::Facing && pageCount == 1);
    const bool overrideCentering = facingCentered && pageCount < 3;
    const bool centerFirstPage = facingCentered && !overrideCentering;
    const bool facingPages = facing || centerFirstPage;
    const bool centerLastPage = centerFirstPage && pageCount % 2 == 0;
    const bool continuousView = Okular::Settings::viewContinuous();
    const int nCols = overrideCentering ? 1 : viewColumns();
    const bool singlePageViewMode = Okular::Settings::viewMode() == Okular::Settings::EnumViewMode::Single;

    if ( d->aFitWindowToPage )
        d->aFitWindowToPage->setEnabled( !continuousView && singlePageViewMode );

    // set all items geometry and resize contents. handle 'continuous' and 'single' modes separately

    PageViewItem * currentItem = d->items[ qMax( 0, (int)d->document->currentPage() ) ];

        // Here we find out column's width and row's height to compute a table
        // so we can place widgets 'centered in virtual cells'.
        const int nRows = (int)ceil( (float)(centerFirstPage ? (pageCount + nCols - 1) : pageCount) / (float)nCols );

        int * colWidth = new int[ nCols ],
            * rowHeight = new int[ nRows ],
            cIdx = 0,
            rIdx = 0;
        for ( int i = 0; i < nCols; i++ )
            colWidth[ i ] = viewportWidth / nCols;
        for ( int i = 0; i < nRows; i++ )
            rowHeight[ i ] = 0;
        // handle the 'centering on first row' stuff
        if ( centerFirstPage )
            cIdx += nCols - 1;

        // 1) find the maximum columns width and rows height for a grid in
        // which each page must well-fit inside a cell
        for ( PageViewItem * item : qAsConst( d->items ) )
        {
            // update internal page size (leaving a little margin in case of Fit* modes)
            updateItemSize( item, colWidth[ cIdx ] - kcolWidthMargin, viewportHeight - krowHeightMargin );
            // find row's maximum height and column's max width
            if ( item->croppedWidth() + kcolWidthMargin > colWidth[ cIdx ] )
                colWidth[ cIdx ] = item->croppedWidth() + kcolWidthMargin;
            if ( item->croppedHeight() + krowHeightMargin > rowHeight[ rIdx ] )
                rowHeight[ rIdx ] = item->croppedHeight() + krowHeightMargin;
            // handle the 'centering on first row' stuff
            // update col/row indices
            if ( ++cIdx == nCols )
            {
                cIdx = 0;
                rIdx++;
            }
        }

        const int pageRowIdx = ( ( centerFirstPage ? nCols - 1 : 0 ) + currentItem->pageNumber() ) / nCols;

        // 2) compute full size
        for ( int i = 0; i < nCols; i++ )
            fullWidth += colWidth[ i ];
        if ( continuousView )
        {
            for ( int i = 0; i < nRows; i++ )
                fullHeight += rowHeight[ i ];
        }
        else
            fullHeight = rowHeight[ pageRowIdx ];

        // 3) arrange widgets inside cells (and refine fullHeight if needed)
        int insertX = 0,
            insertY = fullHeight < viewportHeight ? ( viewportHeight - fullHeight ) / 2 : 0;
        const int origInsertY = insertY;
        cIdx = 0;
        rIdx = 0;
        if ( centerFirstPage )
        {
            cIdx += nCols - 1;
            for ( int i = 0; i < cIdx; ++i )
                insertX += colWidth[ i ];
        }
        for ( PageViewItem * item : qAsConst( d->items ) )
        {
            int cWidth = colWidth[ cIdx ],
                rHeight = rowHeight[ rIdx ];
            if ( continuousView || rIdx == pageRowIdx )
            {
                const bool reallyDoCenterFirst = item->pageNumber() == 0 && centerFirstPage;
                const bool reallyDoCenterLast = item->pageNumber() == pageCount - 1 && centerLastPage;
                int actualX = 0;
                if ( reallyDoCenterFirst || reallyDoCenterLast )
                {
                    // page is centered across entire viewport
                    actualX = (fullWidth - item->croppedWidth()) / 2;
                }
                else if ( facingPages )
                {
                    if (Okular::Settings::rtlReadingDirection()){
                        // RTL reading mode
                        actualX = ( (centerFirstPage && item->pageNumber() % 2 == 0) ||
                                    (!centerFirstPage && item->pageNumber() % 2 == 1) ) ?
                                    (fullWidth / 2) - item->croppedWidth() - 1 : (fullWidth / 2) + 1;
                    } else {
                        // page edges 'touch' the center of the viewport
                        actualX = ( (centerFirstPage && item->pageNumber() % 2 == 1) ||
                                    (!centerFirstPage && item->pageNumber() % 2 == 0) ) ?
                                    (fullWidth / 2) - item->croppedWidth() - 1 : (fullWidth / 2) + 1;
                    }
                }
                else
                {
                    // page is centered within its virtual column
                    //actualX = insertX + (cWidth - item->croppedWidth()) / 2;
                    if (Okular::Settings::rtlReadingDirection()){
                        actualX = fullWidth - insertX - cWidth +( (cWidth - item->croppedWidth()) / 2);
                    } else {
                        actualX = insertX + (cWidth - item->croppedWidth()) / 2;
                    }
                }
                item->moveTo( actualX,
                              (continuousView ? insertY : origInsertY) + (rHeight - item->croppedHeight()) / 2 );
                item->setVisible( true );
            }
            else
            {
                item->moveTo( 0, 0 );
                item->setVisible( false );
            }
            item->setFormWidgetsVisible( d->m_formsVisible );
            // advance col/row index
            insertX += cWidth;
            if ( ++cIdx == nCols )
            {
                cIdx = 0;
                rIdx++;
                insertX = 0;
                insertY += rHeight;
            }
#ifdef PAGEVIEW_DEBUG
            kWarning() << "updating size for pageno" << item->pageNumber() << "cropped" << item->croppedGeometry() << "uncropped" << item->uncroppedGeometry();
#endif
        }

        delete [] colWidth;
        delete [] rowHeight;

    // 3) reset dirty state
    d->dirtyLayout = false;

    // 4) update scrollview's contents size and recenter view
    bool wasUpdatesEnabled = viewport()->updatesEnabled();
    if ( fullWidth != contentAreaWidth() || fullHeight != contentAreaHeight() )
    {
        const Okular::DocumentViewport vp = d->document->viewport();
        // disable updates and resize the viewportContents
        if ( wasUpdatesEnabled )
            viewport()->setUpdatesEnabled( false );
        resizeContentArea( QSize( fullWidth, fullHeight ) );
        // restore previous viewport if defined and updates enabled
        if ( wasUpdatesEnabled )
        {
            if ( vp.pageNumber >= 0 )
            {
                int prevX = horizontalScrollBar()->value(),
                    prevY = verticalScrollBar()->value();

                const QPoint centerPos = viewportToContentArea( vp );
                center( centerPos.x(), centerPos.y() );

                // center() usually moves the viewport, that requests pixmaps too.
                // if that doesn't happen we have to request them by hand
                if ( prevX == horizontalScrollBar()->value() && prevY == verticalScrollBar()->value() )
                    slotRequestVisiblePixmaps();
            }
            // or else go to center page
            else
                center( fullWidth / 2, 0 );
            viewport()->setUpdatesEnabled( true );
        }
    }

    // 5) update the whole viewport if updated enabled
    if ( wasUpdatesEnabled )
        viewport()->update();
}

void PageView::delayedResizeEvent()
{
    // If we already got here we don't need to execute the timer slot again
    d->delayResizeEventTimer->stop();
    slotRelayoutPages();
    slotRequestVisiblePixmaps();
}

static void slotRequestPreloadPixmap( Okular::DocumentObserver * observer, const PageViewItem * i, const QRect &expandedViewportRect, QLinkedList< Okular::PixmapRequest * > *requestedPixmaps )
{
    Okular::NormalizedRect preRenderRegion;
    const QRect intersectionRect = expandedViewportRect.intersected( i->croppedGeometry() );
    if ( !intersectionRect.isEmpty() )
        preRenderRegion = Okular::NormalizedRect( intersectionRect.translated( -i->uncroppedGeometry().topLeft() ), i->uncroppedWidth(), i->uncroppedHeight() );

    // request the pixmap if not already present
    if ( !i->page()->hasPixmap( observer, i->uncroppedWidth(), i->uncroppedHeight(), preRenderRegion ) && i->uncroppedWidth() > 0 )
    {
        Okular::PixmapRequest::PixmapRequestFeatures requestFeatures = Okular::PixmapRequest::Preload;
        requestFeatures |= Okular::PixmapRequest::Asynchronous;
        const bool pageHasTilesManager = i->page()->hasTilesManager( observer );
        if ( pageHasTilesManager && !preRenderRegion.isNull() )
        {
            Okular::PixmapRequest * p = new Okular::PixmapRequest( observer, i->pageNumber(), i->uncroppedWidth(), i->uncroppedHeight(), PAGEVIEW_PRELOAD_PRIO, requestFeatures );
            requestedPixmaps->push_back( p );

            p->setNormalizedRect( preRenderRegion );
            p->setTile( true );
        }
        else if ( !pageHasTilesManager )
        {
            Okular::PixmapRequest * p = new Okular::PixmapRequest( observer, i->pageNumber(), i->uncroppedWidth(), i->uncroppedHeight(), PAGEVIEW_PRELOAD_PRIO, requestFeatures );
            requestedPixmaps->push_back( p );
            p->setNormalizedRect( preRenderRegion );
        }
    }
}

void PageView::slotRequestVisiblePixmaps( int newValue )
{
    // if requests are blocked (because raised by an unwanted event), exit
    if ( d->blockPixmapsRequest || d->viewportMoveActive )
        return;

    // precalc view limits for intersecting with page coords inside the loop
    const bool isEvent = newValue != -1 && !d->blockViewport;
    const QRect viewportRect( horizontalScrollBar()->value(),
                              verticalScrollBar()->value(),
                              viewport()->width(), viewport()->height() );
    const QRect viewportRectAtZeroZero( 0, 0, viewport()->width(), viewport()->height() );

    // some variables used to determine the viewport
    int nearPageNumber = -1;
    const double viewportCenterX = (viewportRect.left() + viewportRect.right()) / 2.0;
    const double viewportCenterY = (viewportRect.top() + viewportRect.bottom()) / 2.0;
    double focusedX = 0.5,
           focusedY = 0.0,
           minDistance = -1.0;
    // Margin (in pixels) around the viewport to preload
    const int pixelsToExpand = 512;

    // iterate over all items
    d->visibleItems.clear();
    QLinkedList< Okular::PixmapRequest * > requestedPixmaps;
    QVector< Okular::VisiblePageRect * > visibleRects;
    for ( PageViewItem * i : qAsConst( d->items ) )
    {
        foreach( FormWidgetIface *fwi, i->formWidgets() )
        {
            Okular::NormalizedRect r = fwi->rect();
            fwi->moveTo(
                qRound( i->uncroppedGeometry().left() + i->uncroppedWidth() * r.left ) + 1 - viewportRect.left(),
                qRound( i->uncroppedGeometry().top() + i->uncroppedHeight() * r.top ) + 1 - viewportRect.top() );
        }
        Q_FOREACH ( VideoWidget *vw, i->videoWidgets() )
        {
            const Okular::NormalizedRect r = vw->normGeometry();
            vw->move(
                qRound( i->uncroppedGeometry().left() + i->uncroppedWidth() * r.left ) + 1 - viewportRect.left(),
                qRound( i->uncroppedGeometry().top() + i->uncroppedHeight() * r.top ) + 1 - viewportRect.top() );

            if ( vw->isPlaying() && viewportRectAtZeroZero.intersected( vw->geometry() ).isEmpty() ) {
                vw->stop();
                vw->pageLeft();
            }
        }

        if ( !i->isVisible() )
            continue;
#ifdef PAGEVIEW_DEBUG
        kWarning() << "checking page" << i->pageNumber();
        kWarning().nospace() << "viewportRect is " << viewportRect << ", page item is " << i->croppedGeometry() << " intersect : " << viewportRect.intersects( i->croppedGeometry() );
#endif
        // if the item doesn't intersect the viewport, skip it
        QRect intersectionRect = viewportRect.intersected( i->croppedGeometry() );
        if ( intersectionRect.isEmpty() )
        {
            continue;
        }

        // add the item to the 'visible list'
        d->visibleItems.push_back( i );
        Okular::VisiblePageRect * vItem = new Okular::VisiblePageRect( i->pageNumber(), Okular::NormalizedRect( intersectionRect.translated( -i->uncroppedGeometry().topLeft() ), i->uncroppedWidth(), i->uncroppedHeight() ) );
        visibleRects.push_back( vItem );
#ifdef PAGEVIEW_DEBUG
        kWarning() << "checking for pixmap for page" << i->pageNumber() << "=" << i->page()->hasPixmap( this, i->uncroppedWidth(), i->uncroppedHeight() );
        kWarning() << "checking for text for page" << i->pageNumber() << "=" << i->page()->hasTextPage();
#endif

        Okular::NormalizedRect expandedVisibleRect = vItem->rect;
        if ( i->page()->hasTilesManager( this ) && Okular::Settings::memoryLevel() != Okular::Settings::EnumMemoryLevel::Low )
        {
            double rectMargin = pixelsToExpand/(double)i->uncroppedHeight();
            expandedVisibleRect.left = qMax( 0.0, vItem->rect.left - rectMargin );
            expandedVisibleRect.top = qMax( 0.0, vItem->rect.top - rectMargin );
            expandedVisibleRect.right = qMin( 1.0, vItem->rect.right + rectMargin );
            expandedVisibleRect.bottom = qMin( 1.0, vItem->rect.bottom + rectMargin );
        }

        // if the item has not the right pixmap, add a request for it
        if ( !i->page()->hasPixmap( this, i->uncroppedWidth(), i->uncroppedHeight(), expandedVisibleRect ) )
        {
#ifdef PAGEVIEW_DEBUG
            kWarning() << "rerequesting visible pixmaps for page" << i->pageNumber() << "!";
#endif
            Okular::PixmapRequest * p = new Okular::PixmapRequest( this, i->pageNumber(), i->uncroppedWidth(), i->uncroppedHeight(), PAGEVIEW_PRIO, Okular::PixmapRequest::Asynchronous );
            requestedPixmaps.push_back( p );

            if ( i->page()->hasTilesManager( this ) )
            {
                p->setNormalizedRect( expandedVisibleRect );
                p->setTile( true );
            }
            else
                p->setNormalizedRect( vItem->rect );
        }

        // look for the item closest to viewport center and the relative
        // position between the item and the viewport center
        if ( isEvent )
        {
            const QRect & geometry = i->croppedGeometry();
            // compute distance between item center and viewport center (slightly moved left)
            double distance = hypot( (geometry.left() + geometry.right()) / 2 - (viewportCenterX - 4),
                                     (geometry.top() + geometry.bottom()) / 2 - viewportCenterY );
            if ( distance >= minDistance && nearPageNumber != -1 )
                continue;
            nearPageNumber = i->pageNumber();
            minDistance = distance;
            if ( geometry.height() > 0 && geometry.width() > 0 )
            {
                focusedX = ( viewportCenterX - (double)geometry.left() ) / (double)geometry.width();
                focusedY = ( viewportCenterY - (double)geometry.top() ) / (double)geometry.height();
            }
        }
    }

    // if preloading is enabled, add the pages before and after in preloading
    if ( !d->visibleItems.isEmpty() &&
         Okular::SettingsCore::memoryLevel() != Okular::SettingsCore::EnumMemoryLevel::Low )
    {
        // as the requests are done in the order as they appear in the list,
        // request first the next page and then the previous

        int pagesToPreload = viewColumns();

        // if the greedy option is set, preload all pages
        if (Okular::SettingsCore::memoryLevel() == Okular::SettingsCore::EnumMemoryLevel::Greedy)
            pagesToPreload = d->items.count();

        const QRect expandedViewportRect = viewportRect.adjusted( 0, -pixelsToExpand, 0, pixelsToExpand );

        for( int j = 1; j <= pagesToPreload; j++ )
        {
            // add the page after the 'visible series' in preload
            const int tailRequest = d->visibleItems.last()->pageNumber() + j;
            if ( tailRequest < (int)d->items.count() )
            {
                slotRequestPreloadPixmap( this, d->items[ tailRequest ], expandedViewportRect, &requestedPixmaps );
            }

            // add the page before the 'visible series' in preload
            const int headRequest = d->visibleItems.first()->pageNumber() - j;
            if ( headRequest >= 0 )
            {
                slotRequestPreloadPixmap( this, d->items[ headRequest ], expandedViewportRect, &requestedPixmaps );
            }

            // stop if we've already reached both ends of the document
            if ( headRequest < 0 && tailRequest >= (int)d->items.count() )
                break;
        }
    }

    // send requests to the document
    if ( !requestedPixmaps.isEmpty() )
    {
        d->document->requestPixmaps( requestedPixmaps );
    }
    // if this functions was invoked by viewport events, send update to document
    if ( isEvent && nearPageNumber != -1 )
    {
        // determine the document viewport
        Okular::DocumentViewport newViewport( nearPageNumber );
        newViewport.rePos.enabled = true;
        newViewport.rePos.normalizedX = focusedX;
        newViewport.rePos.normalizedY = focusedY;
        // set the viewport to other observers
        d->document->setViewport( newViewport , this );
    }
    d->document->setVisiblePageRects( visibleRects, this );
}

void PageView::slotMoveViewport()
{
    // converge to viewportMoveDest in 1 second
    int diffTime = d->viewportMoveTime.elapsed();
    if ( diffTime >= 667 || !d->viewportMoveActive )
    {
        center( d->viewportMoveDest.x(), d->viewportMoveDest.y() );
        d->viewportMoveTimer->stop();
        d->viewportMoveActive = false;
        slotRequestVisiblePixmaps();
        verticalScrollBar()->setEnabled( true );
        horizontalScrollBar()->setEnabled( true );
        return;
    }

    // move the viewport smoothly (kmplot: p(x)=1+0.47*(x-1)^3-0.25*(x-1)^4)
    float convergeSpeed = (float)diffTime / 667.0,
          x = ((float)viewport()->width() / 2.0) + horizontalScrollBar()->value(),
          y = ((float)viewport()->height() / 2.0) + verticalScrollBar()->value(),
          diffX = (float)d->viewportMoveDest.x() - x,
          diffY = (float)d->viewportMoveDest.y() - y;
    convergeSpeed *= convergeSpeed * (1.4 - convergeSpeed);
    center( (int)(x + diffX * convergeSpeed),
            (int)(y + diffY * convergeSpeed ) );
}

void PageView::slotAutoScroll()
{
    // the first time create the timer
    if ( !d->autoScrollTimer )
    {
        d->autoScrollTimer = new QTimer( this );
        d->autoScrollTimer->setSingleShot( true );
        connect( d->autoScrollTimer, &QTimer::timeout, this, &PageView::slotAutoScroll );
    }

    // if scrollIncrement is zero, stop the timer
    if ( !d->scrollIncrement )
    {
        d->autoScrollTimer->stop();
        return;
    }

    // compute delay between timer ticks and scroll amount per tick
    int index = abs( d->scrollIncrement ) - 1;  // 0..9
    const int scrollDelay[10] =  { 200, 100, 50, 30, 20, 30, 25, 20, 30, 20 };
    const int scrollOffset[10] = {   1,   1,  1,  1,  1,  2,  2,  2,  4,  4 };
    d->autoScrollTimer->start( scrollDelay[ index ] );
    int delta = d->scrollIncrement > 0 ? scrollOffset[ index ] : -scrollOffset[ index ];
    verticalScrollBar()->setValue(verticalScrollBar()->value() + delta);
}

void PageView::slotDragScroll()
{
    scrollTo( horizontalScrollBar()->value() + d->dragScrollVector.x(), verticalScrollBar()->value() + d->dragScrollVector.y() );
    QPoint p = contentAreaPosition() + viewport()->mapFromGlobal( QCursor::pos() );
    updateSelection( p );
}

void PageView::slotShowWelcome()
{
    // show initial welcome text
    d->messageWindow->display( i18n( "Welcome" ), QString(), PageViewMessage::Info, 2000 );
}

void PageView::slotShowSizeAllCursor()
{
    setCursor( Qt::SizeAllCursor );
}

void PageView::slotHandleWebShortcutAction()
{
    QAction *action = qobject_cast<QAction*>( sender() );

    if (action) {
        KUriFilterData filterData( action->data().toString() );

        if ( KUriFilter::self()->filterSearchUri( filterData, KUriFilter::WebShortcutFilter ) ) {
            QDesktopServices::openUrl( filterData.uri() );
        }
    }
}

void PageView::slotConfigureWebShortcuts()
{
    KToolInvocation::kdeinitExec( QStringLiteral("kcmshell5"), QStringList() << QStringLiteral("webshortcuts") );
}

void PageView::slotZoom()
{
    if ( !d->aZoom->selectableActionGroup()->isEnabled() )
        return;

    setFocus();
    updateZoom( ZoomFixed );
}

void PageView::slotZoomIn()
{
    updateZoom( ZoomIn );
}

void PageView::slotZoomOut()
{
    updateZoom( ZoomOut );
}

void PageView::slotZoomActual()
{
    updateZoom( ZoomActual );
}

void PageView::slotFitToWidthToggled( bool on )
{
    if ( on ) updateZoom( ZoomFitWidth );
}

void PageView::slotFitToPageToggled( bool on )
{
    if ( on ) updateZoom( ZoomFitPage );
}

void PageView::slotAutoFitToggled( bool on )
{
    if ( on ) updateZoom( ZoomFitAuto );
}

void PageView::slotViewMode( QAction *action )
{
    const int nr = action->data().toInt();
    if ( (int)Okular::Settings::viewMode() != nr )
    {
        Okular::Settings::setViewMode( nr );
        Okular::Settings::self()->save();
        if ( d->document->pages() > 0 )
            slotRelayoutPages();
    }
}

void PageView::slotContinuousToggled( bool on )
{
    if ( Okular::Settings::viewContinuous() != on )
    {
        Okular::Settings::setViewContinuous( on );
        Okular::Settings::self()->save();
        if ( d->document->pages() > 0 )
            slotRelayoutPages();
    }
}

void PageView::slotSetMouseNormal()
{
    d->mouseMode = Okular::Settings::EnumMouseMode::Browse;
    Okular::Settings::setMouseMode( d->mouseMode );
    // hide the messageWindow
    d->messageWindow->hide();
    // reshow the annotator toolbar if hiding was forced (and if it is not already visible)
    if ( d->annotator && d->annotator->hidingWasForced() && d->aToggleAnnotator && !d->aToggleAnnotator->isChecked() )
        d->aToggleAnnotator->trigger();
    // force an update of the cursor
    updateCursor();
    Okular::Settings::self()->save();
}

void PageView::slotSetMouseZoom()
{
    d->mouseMode = Okular::Settings::EnumMouseMode::Zoom;
    Okular::Settings::setMouseMode( d->mouseMode );
    // change the text in messageWindow (and show it if hidden)
    d->messageWindow->display( i18n( "Select zooming area. Right-click to zoom out." ), QString(), PageViewMessage::Info, -1 );
    // force hiding of annotator toolbar
    if ( d->aToggleAnnotator && d->aToggleAnnotator->isChecked() )
    {
        d->aToggleAnnotator->trigger();
        d->annotator->setHidingForced( true );
    }
    // force an update of the cursor
    updateCursor();
    Okular::Settings::self()->save();
}

void PageView::slotSetMouseMagnifier()
{
    d->mouseMode = Okular::Settings::EnumMouseMode::Magnifier;
    Okular::Settings::setMouseMode( d->mouseMode );
    d->messageWindow->display( i18n( "Click to see the magnified view." ), QString() );

    // force an update of the cursor
    updateCursor();
    Okular::Settings::self()->save();
}

void PageView::slotSetMouseSelect()
{
    d->mouseMode = Okular::Settings::EnumMouseMode::RectSelect;
    Okular::Settings::setMouseMode( d->mouseMode );
    // change the text in messageWindow (and show it if hidden)
    d->messageWindow->display( i18n( "Draw a rectangle around the text/graphics to copy." ), QString(), PageViewMessage::Info, -1 );
    // force hiding of annotator toolbar
    if ( d->aToggleAnnotator && d->aToggleAnnotator->isChecked() )
    {
        d->aToggleAnnotator->trigger();
        d->annotator->setHidingForced( true );
    }
    // force an update of the cursor
    updateCursor();
    Okular::Settings::self()->save();
}

void PageView::slotSetMouseTextSelect()
{
    d->mouseMode = Okular::Settings::EnumMouseMode::TextSelect;
    Okular::Settings::setMouseMode( d->mouseMode );
    // change the text in messageWindow (and show it if hidden)
    d->messageWindow->display( i18n( "Select text" ), QString(), PageViewMessage::Info, -1 );
    // force hiding of annotator toolbar
    if ( d->aToggleAnnotator && d->aToggleAnnotator->isChecked() )
    {
        d->aToggleAnnotator->trigger();
        d->annotator->setHidingForced( true );
    }
    // force an update of the cursor
    updateCursor();
    Okular::Settings::self()->save();
}

void PageView::slotSetMouseTableSelect()
{
    d->mouseMode = Okular::Settings::EnumMouseMode::TableSelect;
    Okular::Settings::setMouseMode( d->mouseMode );
    // change the text in messageWindow (and show it if hidden)
    d->messageWindow->display( i18n(
        "Draw a rectangle around the table, then click near edges to divide up; press Esc to clear."
        ), QString(), PageViewMessage::Info, -1 );
    // force hiding of annotator toolbar
    if ( d->aToggleAnnotator && d->aToggleAnnotator->isChecked() )
    {
        d->aToggleAnnotator->trigger();
        d->annotator->setHidingForced( true );
    }
    // force an update of the cursor
    updateCursor();
    Okular::Settings::self()->save();
}

void PageView::slotToggleAnnotator( bool on )
{
    // the 'inHere' trick is needed as the slotSetMouseZoom() calls this
    static bool inHere = false;
    if ( inHere )
        return;
    inHere = true;

    // the annotator can be used in normal mouse mode only, so if asked for it,
    // switch to normal mode
    if ( on && d->mouseMode != Okular::Settings::EnumMouseMode::Browse )
        d->aMouseNormal->trigger();

    // ask for Author's name if not already set
    if ( Okular::Settings::identityAuthor().isEmpty() )
    {
        // get default username from the kdelibs/kdecore/KUser
        KUser currentUser;
        QString userName = currentUser.property( KUser::FullName ).toString();
        // ask the user for confirmation/change
        if ( userName.isEmpty() )
        {
            bool ok = false;
            userName = QInputDialog::getText(nullptr,
                           i18n( "Annotations author" ),
                           i18n( "Please insert your name or initials:" ),
                           QLineEdit::Normal,
                           QString(),
                           &ok );

            if ( !ok )
            {
                d->aToggleAnnotator->trigger();
                inHere = false;
                return;
            }
        }
        // save the name
        Okular::Settings::setIdentityAuthor( userName );
        Okular::Settings::self()->save();
    }

    // create the annotator object if not present
    if ( !d->annotator )
    {
        d->annotator = new PageViewAnnotator( this, d->document );
        bool allowTools = d->document->pages() > 0 && d->document->isAllowed( Okular::AllowNotes );
        d->annotator->setToolsEnabled( allowTools );
        d->annotator->setTextToolsEnabled( allowTools && d->document->supportsSearching() );
    }

    // initialize/reset annotator (and show/hide toolbar)
    d->annotator->setEnabled( on );
    d->annotator->setHidingForced( false );

    inHere = false;
}

void PageView::slotAutoScrollUp()
{
    if ( d->scrollIncrement < -9 )
        return;
    d->scrollIncrement--;
    slotAutoScroll();
    setFocus();
}

void PageView::slotAutoScrollDown()
{
    if ( d->scrollIncrement > 9 )
        return;
    d->scrollIncrement++;
    slotAutoScroll();
    setFocus();
}

void PageView::slotScrollUp( bool singleStep )
{
    // if in single page mode and at the top of the screen, go to \ page
    if ( Okular::Settings::viewContinuous() || verticalScrollBar()->value() > verticalScrollBar()->minimum() )
    {
        if ( singleStep )
            verticalScrollBar()->triggerAction( QScrollBar::SliderSingleStepSub );
        else
            verticalScrollBar()->triggerAction( QScrollBar::SliderPageStepSub );
    }
    else if ( d->document->currentPage() > 0 )
    {
        // more optimized than document->setPrevPage and then move view to bottom
        Okular::DocumentViewport newViewport = d->document->viewport();
        newViewport.pageNumber -= viewColumns();
        if ( newViewport.pageNumber < 0 )
            newViewport.pageNumber = 0;
        newViewport.rePos.enabled = true;
        newViewport.rePos.normalizedY = 1.0;
        d->document->setViewport( newViewport );
    }
}

void PageView::slotScrollDown( bool singleStep )
{
    // if in single page mode and at the bottom of the screen, go to next page
    if ( Okular::Settings::viewContinuous() || verticalScrollBar()->value() < verticalScrollBar()->maximum() )
    {
        if ( singleStep )
            verticalScrollBar()->triggerAction( QScrollBar::SliderSingleStepAdd );
        else
            verticalScrollBar()->triggerAction( QScrollBar::SliderPageStepAdd );
    }
    else if ( (int)d->document->currentPage() < d->items.count() - 1 )
    {
        // more optimized than document->setNextPage and then move view to top
        Okular::DocumentViewport newViewport = d->document->viewport();
        newViewport.pageNumber += viewColumns();
        if ( newViewport.pageNumber >= (int)d->items.count() )
            newViewport.pageNumber = d->items.count() - 1;
        newViewport.rePos.enabled = true;
        newViewport.rePos.normalizedY = 0.0;
        d->document->setViewport( newViewport );
    }
}

void PageView::slotRotateClockwise()
{
    int id = ( (int)d->document->rotation() + 1 ) % 4;
    d->document->setRotation( id );
}

void PageView::slotRotateCounterClockwise()
{
    int id = ( (int)d->document->rotation() + 3 ) % 4;
    d->document->setRotation( id );
}

void PageView::slotRotateOriginal()
{
    d->document->setRotation( 0 );
}

void PageView::slotPageSizes( int newsize )
{
    if ( newsize < 0 || newsize >= d->document->pageSizes().count() )
        return;

    d->document->setPageSize( d->document->pageSizes().at( newsize ) );
}

// Enforce mutual-exclusion between trim modes
// Each mode is uniquely identified by a single value
// From Okular::Settings::EnumTrimMode
void PageView::updateTrimMode( int except_id ) {
    const QList<QAction *> trimModeActions = d->aTrimMode->menu()->actions();
    foreach(QAction *trimModeAction, trimModeActions)
    {
        if (trimModeAction->data().toInt() != except_id)
            trimModeAction->setChecked( false );
    }
}

bool PageView::mouseReleaseOverLink( const Okular::ObjectRect * rect ) const
{
    if ( rect )
    {
        // handle click over a link
        const Okular::Action * action = static_cast< const Okular::Action * >( rect->object() );
        d->document->processAction( action );
        return true;
    }
    return false;
}

void PageView::slotTrimMarginsToggled( bool on )
{
    if (on) { // Turn off any other Trim modes
       updateTrimMode(d->aTrimMargins->data().toInt());
    }

    if ( Okular::Settings::trimMargins() != on )
    {
        Okular::Settings::setTrimMargins( on );
        Okular::Settings::self()->save();
        if ( d->document->pages() > 0 )
        {
            slotRelayoutPages();
            slotRequestVisiblePixmaps(); // TODO: slotRelayoutPages() may have done this already!
        }
    }
}

void PageView::slotTrimToSelectionToggled( bool on )
{
    if ( on ) { // Turn off any other Trim modes
        updateTrimMode(d->aTrimToSelection->data().toInt());

        d->mouseMode = Okular::Settings::EnumMouseMode::TrimSelect;
        // change the text in messageWindow (and show it if hidden)
        d->messageWindow->display( i18n( "Draw a rectangle around the page area you wish to keep visible" ), QString(), PageViewMessage::Info, -1 );
        // force hiding of annotator toolbar
        if ( d->aToggleAnnotator && d->aToggleAnnotator->isChecked() )
        {
           d->aToggleAnnotator->trigger();
           d->annotator->setHidingForced( true );
        }
        // force an update of the cursor
        updateCursor();
    } else {

        // toggled off while making selection
        if ( Okular::Settings::EnumMouseMode::TrimSelect == d->mouseMode ) {
            // clear widget selection and invalidate rect
            selectionClear();

            // When Trim selection bbox interaction is over, we should switch to another mousemode.
            if ( d->aPrevAction )
            {
                d->aPrevAction->trigger();
                d->aPrevAction = nullptr;
            } else {
                d->aMouseNormal->trigger();
            }
        }

        d->trimBoundingBox = Okular::NormalizedRect(); // invalidate box
        if ( d->document->pages() > 0 )
        {
            slotRelayoutPages();
            slotRequestVisiblePixmaps(); // TODO: slotRelayoutPages() may have done this already!
        }
    }

}

void PageView::slotToggleForms()
{
    toggleFormWidgets( !d->m_formsVisible );
}

void PageView::slotFormChanged( int pageNumber )
{
    if ( !d->refreshTimer )
    {
        d->refreshTimer = new QTimer( this );
        d->refreshTimer->setSingleShot( true );
        connect( d->refreshTimer, &QTimer::timeout,
                 this, &PageView::slotRefreshPage );
    }
    d->refreshPages << pageNumber;
    int delay = 0;
    if ( d->m_formsVisible )
    {
        delay = 1000;
    }
    d->refreshTimer->start( delay );
}

void PageView::slotRefreshPage()
{
    foreach(int req, d->refreshPages)
    {
        QMetaObject::invokeMethod( d->document, "refreshPixmaps", Qt::QueuedConnection,
                                   Q_ARG( int, req ) );
    }
    d->refreshPages.clear();
}

#ifdef HAVE_SPEECH
void PageView::slotSpeakDocument()
{
    QString text;
    for ( const PageViewItem * item : qAsConst( d->items ) )
    {
        Okular::RegularAreaRect * area = textSelectionForItem( item );
        text.append( item->page()->text( area ) );
        text.append( '\n' );
        delete area;
    }

    d->tts()->say( text );
}

void PageView::slotSpeakCurrentPage()
{
    const int currentPage = d->document->viewport().pageNumber;

    PageViewItem *item = d->items.at( currentPage );
    Okular::RegularAreaRect * area = textSelectionForItem( item );
    const QString text = item->page()->text( area );
    delete area;

    d->tts()->say( text );
}

void PageView::slotStopSpeaks()
{
    if ( !d->m_tts )
        return;

    d->m_tts->stopAllSpeechs();
}
#endif

void PageView::slotAction( Okular::Action *action )
{
    d->document->processAction( action );
}

void PageView::externalKeyPressEvent( QKeyEvent *e )
{
    keyPressEvent( e );
}

void PageView::slotProcessMovieAction( const Okular::MovieAction *action )
{
    const Okular::MovieAnnotation *movieAnnotation = action->annotation();
    if ( !movieAnnotation )
        return;

    Okular::Movie *movie = movieAnnotation->movie();
    if ( !movie )
        return;

    const int currentPage = d->document->viewport().pageNumber;

    PageViewItem *item = d->items.at( currentPage );
    if ( !item )
        return;

    VideoWidget *vw = item->videoWidgets().value( movie );
    if ( !vw )
        return;

    vw->show();

    switch ( action->operation() )
    {
        case Okular::MovieAction::Play:
            vw->stop();
            vw->play();
            break;
        case Okular::MovieAction::Stop:
            vw->stop();
            break;
        case Okular::MovieAction::Pause:
            vw->pause();
            break;
        case Okular::MovieAction::Resume:
            vw->play();
            break;
    };
}

void PageView::slotProcessRenditionAction( const Okular::RenditionAction *action )
{
    Okular::Movie *movie = action->movie();
    if ( !movie )
        return;

    const int currentPage = d->document->viewport().pageNumber;

    PageViewItem *item = d->items.at( currentPage );
    if ( !item )
        return;

    VideoWidget *vw = item->videoWidgets().value( movie );
    if ( !vw )
        return;

    if ( action->operation() == Okular::RenditionAction::None )
        return;

    vw->show();

    switch ( action->operation() )
    {
        case Okular::RenditionAction::Play:
            vw->stop();
            vw->play();
            break;
        case Okular::RenditionAction::Stop:
            vw->stop();
            break;
        case Okular::RenditionAction::Pause:
            vw->pause();
            break;
        case Okular::RenditionAction::Resume:
            vw->play();
            break;
        default:
            return;
    };
}

void PageView::slotSetChangeColors(bool active)
{
    Okular::SettingsCore::setChangeColors(active);
    Okular::Settings::self()->save();
    viewport()->update();
}

void PageView::slotToggleChangeColors()
{
    slotSetChangeColors( !Okular::SettingsCore::changeColors() );
}

void PageView::slotFitWindowToPage()
{
    const PageViewItem *currentPageItem = nullptr;
    QSize viewportSize = viewport()->size();
    foreach ( const PageViewItem * pageItem, d->items )
    {
        if ( pageItem->isVisible() )
        {
            currentPageItem = pageItem;
            break;
        }
    }

    if ( !currentPageItem )
        return;

    const QSize pageSize = QSize( currentPageItem->uncroppedWidth() + kcolWidthMargin, currentPageItem->uncroppedHeight() + krowHeightMargin );
    if ( verticalScrollBar()->isVisible() )
        viewportSize.setWidth( viewportSize.width() + verticalScrollBar()->width() );
    if ( horizontalScrollBar()->isVisible() )
        viewportSize.setHeight( viewportSize.height() + horizontalScrollBar()->height() );
    emit fitWindowToPage( viewportSize, pageSize );
}

void PageView::slotSelectPage()
{
    textSelectionClear();
    const int currentPage = d->document->viewport().pageNumber;
    PageViewItem *item = d->items.at( currentPage );

    if ( item )
    {
        Okular::RegularAreaRect * area = textSelectionForItem( item );
        const QString text = item->page()->text( area );
        d->pagesWithTextSelection.insert( currentPage );
        d->document->setPageTextSelection( currentPage, area, palette().color( QPalette::Active, QPalette::Highlight ) );
    }
}

void PageView::highlightSignatureFormWidget( const Okular::FormFieldSignature *form )
{
    QVector< PageViewItem * >::const_iterator dIt = d->items.constBegin(), dEnd = d->items.constEnd();
    for ( ; dIt != dEnd; ++dIt )
    {
        foreach ( auto fw, (*dIt)->formWidgets() )
        {
            if ( fw->formField() == form )
            {
                SignatureEdit *widget = static_cast< SignatureEdit * >( fw );
                widget->setDummyMode( true );
                QTimer::singleShot( 250, this, [=]{
                    widget->setDummyMode( false );
                });
                return;
            }
        }
    }
}

//END private SLOTS

#include "moc_pageview.cpp"

/* kate: replace-tabs on; indent-width 4; */