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okular/ui/pageview.cpp
Pino Toscano 761276e938 correctly enable/disable tools and text tools when switching document 
svn path=/trunk/KDE/kdegraphics/okular/; revision=746447
2007-12-09 01:35:42 +00:00

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/***************************************************************************
* Copyright (C) 2004-2005 by Enrico Ros <eros.kde@email.it> *
* Copyright (C) 2004-2006 by Albert Astals Cid <tsdgeos@terra.es> *
* *
* 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> *
* *
* 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 <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 <QtDBus/QDBusConnection>
#include <QtDBus/QDBusConnectionInterface>
#include <QtDBus/QDBusInterface>
#include <QtDBus/QDBusReply>
#include <kaction.h>
#include <kstandardaction.h>
#include <kactioncollection.h>
#include <kmenu.h>
#include <klocale.h>
#include <kfiledialog.h>
#include <kglobal.h>
#include <kglobalsettings.h>
#include <kselectaction.h>
#include <ktoggleaction.h>
#include <ktoolinvocation.h>
#include <kdebug.h>
#include <kmessagebox.h>
#include <kicon.h>
// system includes
#include <math.h>
#include <stdlib.h>
// local includes
#include "formwidgets.h"
#include "pageviewutils.h"
#include "pagepainter.h"
#include "core/annotations.h"
#include "annotwindow.h"
#include "annotationguiutils.h"
#include "annotationpopup.h"
#include "pageviewannotator.h"
#include "toolaction.h"
#include "core/action.h"
#include "core/document.h"
#include "core/form.h"
#include "core/page.h"
#include "core/misc.h"
#include "core/generator.h"
#include "settings.h"
static int pageflags = PagePainter::Accessibility | PagePainter::EnhanceLinks |
PagePainter::EnhanceImages | PagePainter::Highlights |
PagePainter::TextSelection | PagePainter::Annotations;
// structure used internally by PageView for data storage
class PageViewPrivate
{
public:
PageViewPrivate( PageView *qq );
FormWidgetsController* formWidgetsController();
// the document, pageviewItems and the 'visible cache'
PageView *q;
Okular::Document * document;
QVector< PageViewItem * > items;
QLinkedList< PageViewItem * > visibleItems;
// view layout (columns and continuous in Settings), zoom and mouse
PageView::ZoomMode zoomMode;
float zoomFactor;
PageView::MouseMode mouseMode;
QPoint mouseGrabPos;
QPoint mousePressPos;
QPoint mouseSelectPos;
bool mouseMidZooming;
int mouseMidLastY;
bool mouseSelecting;
QRect mouseSelectionRect;
QColor mouseSelectionColor;
bool mouseTextSelecting;
QSet< int > pagesWithTextSelection;
bool mouseOnRect;
Okular::Annotation * mouseAnn;
QPoint mouseAnnPos;
// viewport move
bool viewportMoveActive;
QTime viewportMoveTime;
QPoint viewportMoveDest;
QTimer * viewportMoveTimer;
// auto scroll
int scrollIncrement;
QTimer * autoScrollTimer;
// annotations
PageViewAnnotator * annotator;
//text annotation dialogs list
QList<AnnotWindow *> m_annowindows;
// other stuff
QTimer * delayResizeTimer;
bool dirtyLayout;
bool blockViewport; // prevents changes to viewport
bool blockPixmapsRequest; // prevent pixmap requests
PageViewMessage * messageWindow; // in pageviewutils.h
bool m_formsVisible;
FormWidgetsController *formsWidgetController;
// drag scroll
QPoint dragScrollVector;
QTimer dragScrollTimer;
// actions
KAction * aRotateClockwise;
KAction * aRotateCounterClockwise;
KAction * aRotateOriginal;
KSelectAction * aPageSizes;
QAction * aMouseNormal;
QAction * aMouseSelect;
QAction * aMouseTextSelect;
KToggleAction * aToggleAnnotator;
KSelectAction * aZoom;
QAction * aZoomIn;
QAction * aZoomOut;
KToggleAction * aZoomFitWidth;
KToggleAction * aZoomFitPage;
KToggleAction * aZoomFitText;
KSelectAction * aViewMode;
KToggleAction * aViewContinuous;
QAction * aPrevAction;
KAction * aToggleForms;
KActionCollection * actionCollection;
int setting_viewMode;
int setting_viewCols;
};
PageViewPrivate::PageViewPrivate( PageView *qq )
: q( qq )
{
}
FormWidgetsController* PageViewPrivate::formWidgetsController()
{
if ( !formsWidgetController )
{
formsWidgetController = new FormWidgetsController();
QObject::connect( formsWidgetController, SIGNAL( changed( FormWidgetIface* ) ),
q, SLOT( slotFormWidgetChanged( FormWidgetIface * ) ) );
}
return formsWidgetController;
}
class PageViewWidget : public QWidget
{
public:
PageViewWidget(PageView *pv) : QWidget(pv), m_pageView(pv) {}
protected:
bool event( QEvent *e )
{
if ( e->type() == QEvent::ToolTip && m_pageView->d->mouseMode == PageView::MouseNormal )
{
QHelpEvent * he = (QHelpEvent*)e;
PageViewItem * pageItem = m_pageView->pickItemOnPoint( he->x(), he->y() );
const Okular::ObjectRect * rect = 0;
const Okular::Action * link = 0;
const Okular::Annotation * ann = 0;
if ( pageItem )
{
double nX = (double)( he->x() - pageItem->geometry().left() ) / (double)pageItem->width();
double nY = (double)( he->y() - pageItem->geometry().top() ) / (double)pageItem->height();
rect = pageItem->page()->objectRect( Okular::ObjectRect::OAnnotation, nX, nY, pageItem->width(), pageItem->height() );
if ( rect )
ann = static_cast< const Okular::AnnotationObjectRect * >( rect )->annotation();
else
{
rect = pageItem->page()->objectRect( Okular::ObjectRect::Action, nX, nY, pageItem->width(), pageItem->height() );
if ( rect )
link = static_cast< const Okular::Action * >( rect->object() );
}
}
if ( ann )
{
QRect r = rect->boundingRect( pageItem->width(), pageItem->height() );
r.translate( pageItem->geometry().left(), pageItem->geometry().top() );
QString tip = AnnotationGuiUtils::prettyToolTip( ann );
QToolTip::showText( he->globalPos(), tip, this, r );
}
else if ( link )
{
QRect r = rect->boundingRect( pageItem->width(), pageItem->height() );
r.translate( pageItem->geometry().left(), pageItem->geometry().top() );
QString tip = link->actionTip();
if ( !tip.isEmpty() )
QToolTip::showText( he->globalPos(), tip, this, r );
}
e->accept();
return true;
}
else
// do not stop the event
return QWidget::event( e );
}
// viewport events
void paintEvent( QPaintEvent *e )
{
m_pageView->contentsPaintEvent(e);
}
void mouseMoveEvent( QMouseEvent *e )
{
m_pageView->contentsMouseMoveEvent(e);
}
void mousePressEvent( QMouseEvent *e )
{
m_pageView->contentsMousePressEvent(e);
}
void mouseReleaseEvent( QMouseEvent *e )
{
m_pageView->contentsMouseReleaseEvent(e);
}
private:
PageView *m_pageView;
};
/* 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/drop
* 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 )
: QScrollArea( parent )
{
// create and initialize private storage structure
d = new PageViewPrivate( this );
d->document = document;
d->aRotateClockwise = 0;
d->aRotateCounterClockwise = 0;
d->aRotateOriginal = 0;
d->aViewMode = 0;
d->zoomMode = (PageView::ZoomMode) Okular::Settings::zoomMode();
d->zoomFactor = Okular::Settings::zoomFactor();
d->mouseMode = MouseNormal;
d->mouseMidZooming = false;
d->mouseSelecting = false;
d->mouseTextSelecting = false;
d->mouseOnRect = false;
d->mouseAnn = 0;
d->viewportMoveActive = false;
d->viewportMoveTimer = 0;
d->scrollIncrement = 0;
d->autoScrollTimer = 0;
d->annotator = 0;
d->delayResizeTimer = 0;
d->dirtyLayout = false;
d->blockViewport = false;
d->blockPixmapsRequest = false;
d->messageWindow = new PageViewMessage(this);
d->m_formsVisible = false;
d->formsWidgetController = 0;
d->aRotateClockwise = 0;
d->aRotateCounterClockwise = 0;
d->aRotateOriginal = 0;
d->aPageSizes = 0;
d->aMouseNormal = 0;
d->aMouseSelect = 0;
d->aMouseTextSelect = 0;
d->aToggleAnnotator = 0;
d->aZoomFitWidth = 0;
d->aZoomFitPage = 0;
d->aZoomFitText = 0;
d->aViewMode = 0;
d->aViewContinuous = 0;
d->aPrevAction = 0;
d->aToggleForms = 0;
d->actionCollection = 0;
d->aPageSizes=0;
d->setting_viewMode = Okular::Settings::viewMode();
d->setting_viewCols = Okular::Settings::viewColumns();
setFrameStyle(QFrame::NoFrame);
setAttribute( Qt::WA_StaticContents );
setObjectName( QLatin1String( "okular::pageView" ) );
// widget setup: setup focus, accept drops and track mouse
setWidget(new PageViewWidget(this));
viewport()->setFocusProxy( this );
viewport()->setFocusPolicy( Qt::StrongFocus );
widget()->setAttribute( Qt::WA_OpaquePaintEvent );
widget()->setAttribute( Qt::WA_NoSystemBackground );
setAcceptDrops( true );
widget()->setMouseTracking( true );
setWidgetResizable(true);
// conntect the padding of the viewport to pixmaps requests
connect(horizontalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(slotRequestVisiblePixmaps()));
connect(verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(slotRequestVisiblePixmaps()));
connect( &d->dragScrollTimer, SIGNAL(timeout()), this, SLOT(slotDragScroll()) );
// 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 );
// schedule the welcome message
QMetaObject::invokeMethod(this, "slotShowWelcome", Qt::QueuedConnection);
}
PageView::~PageView()
{
// delete the local storage structure
qDeleteAll(d->m_annowindows);
// delete all widgets
QVector< PageViewItem * >::const_iterator dIt = d->items.begin(), dEnd = d->items.end();
for ( ; dIt != dEnd; ++dIt )
delete *dIt;
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(KIcon( "zoom-original" ), i18n("Zoom"), this);
ac->addAction("zoom_to", d->aZoom );
d->aZoom->setEditable( true );
d->aZoom->setMaxComboViewCount( 13 );
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 );
}
void PageView::setupActions( KActionCollection * ac )
{
d->actionCollection = ac;
// orientation menu actions
d->aRotateClockwise = new KAction( KIcon( "object-rotate-right" ), i18n( "Rotate Right" ), this );
d->aRotateClockwise->setIconText( i18nc( "Rotate right", "Right" ) );
ac->addAction( "view_orientation_rotate_cw", d->aRotateClockwise );
d->aRotateClockwise->setEnabled( false );
connect( d->aRotateClockwise, SIGNAL( triggered() ), this, SLOT( slotRotateClockwise() ) );
d->aRotateCounterClockwise = new KAction( KIcon( "object-rotate-left" ), i18n( "Rotate Left" ), this );
d->aRotateCounterClockwise->setIconText( i18nc( "Rotate left", "Left" ) );
ac->addAction( "view_orientation_rotate_ccw", d->aRotateCounterClockwise );
d->aRotateCounterClockwise->setEnabled( false );
connect( d->aRotateCounterClockwise, SIGNAL( triggered() ), this, SLOT( slotRotateCounterClockwise() ) );
d->aRotateOriginal = new KAction( i18n( "Original Orientation" ), this );
ac->addAction( "view_orientation_original", d->aRotateOriginal );
d->aRotateOriginal->setEnabled( false );
connect( d->aRotateOriginal, SIGNAL( triggered() ), this, SLOT( slotRotateOriginal() ) );
d->aPageSizes = new KSelectAction(i18n("&Page Size"), this);
ac->addAction("view_pagesizes", d->aPageSizes);
d->aPageSizes->setEnabled( false );
connect( d->aPageSizes , SIGNAL( triggered( int ) ),
this, SLOT( slotPageSizes( int ) ) );
d->aZoomFitWidth = new KToggleAction(KIcon( "view_fit_width" ), i18n("Fit &Width"), this);
ac->addAction("view_fit_to_width", d->aZoomFitWidth );
connect( d->aZoomFitWidth, SIGNAL( toggled( bool ) ), SLOT( slotFitToWidthToggled( bool ) ) );
d->aZoomFitPage = new KToggleAction(KIcon( "view_fit_window" ), i18n("Fit &Page"), this);
ac->addAction("view_fit_to_page", d->aZoomFitPage );
connect( d->aZoomFitPage, SIGNAL( toggled( bool ) ), SLOT( slotFitToPageToggled( bool ) ) );
/*
d->aZoomFitText = new KToggleAction(KIcon( "zoom-best-fit" ), i18n("Fit &Text"), this);
ac->addAction("zoom_fit_text", d->aZoomFitText );
connect( d->aZoomFitText, SIGNAL( toggled( bool ) ), SLOT( slotFitToTextToggled( bool ) ) );
*/
// View-Layout actions
QStringList viewModes;
viewModes.append( i18n( "Single Page" ) );
viewModes.append( i18n( "Facing Pages" ) );
viewModes.append( i18n( "Overview" ) );
d->aViewMode = new KSelectAction(KIcon( "view-left-right" ), i18n("&View Mode"), this);
ac->addAction("view_render_mode", d->aViewMode );
connect( d->aViewMode, SIGNAL( triggered( int ) ), SLOT( slotViewMode( int ) ) );
d->aViewMode->setItems( viewModes );
d->aViewMode->setCurrentItem( Okular::Settings::viewMode() );
d->aViewContinuous = new KToggleAction(KIcon( "fileview-text" ), i18n("&Continuous"), this);
ac->addAction("view_continuous", d->aViewContinuous );
connect( d->aViewContinuous, SIGNAL( toggled( bool ) ), SLOT( slotContinuousToggled( bool ) ) );
d->aViewContinuous->setChecked( Okular::Settings::viewContinuous() );
// Mouse-Mode actions
QActionGroup * actGroup = new QActionGroup( this );
actGroup->setExclusive( true );
d->aMouseNormal = new KAction( KIcon( "input-mouse" ), i18n( "&Browse Tool" ), this );
ac->addAction("mouse_drag", d->aMouseNormal );
connect( d->aMouseNormal, SIGNAL( triggered() ), this, SLOT( slotSetMouseNormal() ) );
d->aMouseNormal->setIconText( i18nc( "Browse Tool", "Browse" ) );
d->aMouseNormal->setCheckable( true );
d->aMouseNormal->setShortcut( Qt::CTRL + Qt::Key_1 );
d->aMouseNormal->setActionGroup( actGroup );
d->aMouseNormal->setChecked( true );
KAction * mz = new KAction(KIcon( "zoom-original" ), i18n("&Zoom Tool"), this);
ac->addAction("mouse_zoom", mz );
connect( mz, SIGNAL( triggered() ), this, SLOT( slotSetMouseZoom() ) );
mz->setIconText( i18nc( "Zoom Tool", "Zoom" ) );
mz->setCheckable( true );
mz->setShortcut( Qt::CTRL + Qt::Key_2 );
mz->setActionGroup( actGroup );
d->aMouseSelect = new KAction(KIcon( "frame-edit" ), i18n("&Selection Tool"), this);
ac->addAction("mouse_select", d->aMouseSelect );
connect( d->aMouseSelect, SIGNAL( triggered() ), this, SLOT( slotSetMouseSelect() ) );
d->aMouseSelect->setIconText( i18nc( "Select Tool", "Selection" ) );
d->aMouseSelect->setCheckable( true );
d->aMouseSelect->setShortcut( Qt::CTRL + Qt::Key_3 );
d->aMouseSelect->setActionGroup( actGroup );
d->aMouseTextSelect = new KAction(KIcon( "text" ), i18n("&Text Selection Tool"), this);
ac->addAction("mouse_textselect", d->aMouseTextSelect );
connect( d->aMouseTextSelect, SIGNAL( triggered() ), this, SLOT( slotSetMouseTextSelect() ) );
d->aMouseTextSelect->setIconText( i18nc( "Text Selection Tool", "Text Selection" ) );
d->aMouseTextSelect->setCheckable( true );
d->aMouseTextSelect->setShortcut( Qt::CTRL + Qt::Key_4 );
d->aMouseTextSelect->setActionGroup( actGroup );
d->aToggleAnnotator = new KToggleAction(KIcon( "draw-freehand" ), i18n("&Review"), this);
ac->addAction("mouse_toggle_annotate", d->aToggleAnnotator );
d->aToggleAnnotator->setCheckable( true );
connect( d->aToggleAnnotator, SIGNAL( toggled( bool ) ), SLOT( slotToggleAnnotator( bool ) ) );
d->aToggleAnnotator->setShortcut( Qt::Key_F6 );
ToolAction *ta = new ToolAction( this );
ac->addAction( "mouse_selecttools", ta );
ta->addAction( d->aMouseSelect );
ta->addAction( d->aMouseTextSelect );
// Other actions
KAction * su = new KAction(i18n("Scroll Up"), this);
ac->addAction("view_scroll_up", su );
connect( su, SIGNAL( triggered() ), this, SLOT( slotScrollUp() ) );
su->setShortcut( QKeySequence(Qt::SHIFT + Qt::Key_Up) );
addAction(su);
KAction * sd = new KAction(i18n("Scroll Down"), this);
ac->addAction("view_scroll_down", sd );
connect( sd, SIGNAL( triggered() ), this, SLOT( slotScrollDown() ) );
sd->setShortcut( QKeySequence(Qt::SHIFT + Qt::Key_Down) );
addAction(sd);
d->aToggleForms = new KAction( this );
ac->addAction( "view_toggle_forms", d->aToggleForms );
connect( d->aToggleForms, SIGNAL( triggered() ), this, SLOT( slotToggleForms() ) );
d->aToggleForms->setEnabled( false );
toggleFormWidgets( false );
}
bool PageView::canFitPageWidth() const
{
return Okular::Settings::viewMode() != 0 || 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->aZoomFitText->setChecked( false );
d->aViewMode->setCurrentItem( 0 );
viewport()->setUpdatesEnabled( false );
slotRelayoutPages();
viewport()->setUpdatesEnabled( true );
d->document->setViewportPage( page );
updateZoomText();
setFocus();
}
void PageView::setAnnotationWindow( Okular::Annotation * annotation )
{
if ( !annotation )
return;
// find the annot window
AnnotWindow* existWindow = 0;
foreach ( AnnotWindow* tempwnd, d->m_annowindows )
{
if ( tempwnd )
{
if ( tempwnd->m_annot == annotation )
{
existWindow = tempwnd;
break;
}
}
}
if ( existWindow == 0 )
{
existWindow = new AnnotWindow( this, annotation );
d->m_annowindows << existWindow;
}
existWindow->show();
}
void PageView::removeAnnotationWindow( Okular::Annotation *annotation )
{
QList<AnnotWindow *>::Iterator it = d->m_annowindows.begin();
QList<AnnotWindow *>::Iterator itEnd = d->m_annowindows.end();
for ( ; it != itEnd; ++it )
{
if ( annotation == (*it)->m_annot )
{
delete *it;
d->m_annowindows.erase( it );
return;
}
}
}
void PageView::displayMessage( const QString & message,PageViewMessage::Icon icon,int duration )
{
if ( !Okular::Settings::showOSD() )
{
if (icon == PageViewMessage::Error)
KMessageBox::error( this, message );
else
return;
}
// hide messageWindow if string is empty
if ( message.isEmpty() )
return d->messageWindow->hide();
// display message (duration is length dependant)
if (duration==-1)
duration = 500 + 100 * message.length();
d->messageWindow->display( message, 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() == 2 &&
( (int)Okular::Settings::viewColumns() != d->setting_viewCols ) )
{
d->setting_viewMode = Okular::Settings::viewMode();
d->setting_viewCols = Okular::Settings::viewColumns();
slotRelayoutPages();
}
}
KAction *PageView::toggleFormsAction() const
{
return d->aToggleForms;
}
void PageView::copyTextSelection() const
{
if ( d->pagesWithTextSelection.isEmpty() )
return;
QString text;
QList< int > selpages = d->pagesWithTextSelection.toList();
qSort( selpages );
const Okular::Page * pg = 0;
if ( selpages.count() == 1 )
{
pg = d->document->page( selpages.first() );
text.append( pg->text( pg->textSelection() ) );
}
else
{
pg = d->document->page( selpages.first() );
text.append( pg->text( pg->textSelection() ) );
int end = selpages.count() - 1;
for( int i = 1; i < end; ++i )
{
pg = d->document->page( selpages.at( i ) );
text.append( pg->text() );
}
pg = d->document->page( selpages.last() );
text.append( pg->text( pg->textSelection() ) );
}
if ( !text.isEmpty() )
{
QClipboard *cb = QApplication::clipboard();
cb->setText( text, QClipboard::Clipboard );
if ( cb->supportsSelection() )
cb->setText( text, QClipboard::Selection );
}
}
void PageView::selectAll()
{
if ( d->mouseMode != MouseTextSelect )
return;
QVector< PageViewItem * >::const_iterator it = d->items.begin(), itEnd = d->items.end();
for ( ; it < itEnd; ++it )
{
Okular::RegularAreaRect * area = textSelectionForItem( *it );
d->pagesWithTextSelection.insert( (*it)->pageNumber() );
d->document->setPageTextSelection( (*it)->pageNumber(), area, palette().color( QPalette::Active, QPalette::Highlight ) );
}
}
//BEGIN DocumentObserver inherited methods
void PageView::notifySetup( const QVector< Okular::Page * > & pageSet, int setupFlags )
{
bool documentChanged = setupFlags & Okular::DocumentObserver::DocumentChanged;
// 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;
if ( !documentChanged )
return;
}
// delete all widgets (one for each page in pageSet)
QVector< PageViewItem * >::const_iterator dIt = d->items.begin(), dEnd = d->items.end();
for ( ; dIt != dEnd; ++dIt )
delete *dIt;
d->items.clear();
d->visibleItems.clear();
toggleFormWidgets( false );
bool haspages = !pageSet.isEmpty();
bool hasformwidgets = false;
// create children widgets
QVector< Okular::Page * >::const_iterator setIt = pageSet.begin(), setEnd = pageSet.end();
for ( ; setIt != setEnd; ++setIt )
{
PageViewItem * item = new PageViewItem( *setIt );
d->items.push_back( item );
#ifdef PAGEVIEW_DEBUG
kDebug().nospace() << "geom for " << d->items.last()->pageNumber() << " is " << d->items.last()->geometry();
#endif
const QLinkedList< Okular::FormField * > pageFields = (*setIt)->formFields();
QLinkedList< Okular::FormField * >::const_iterator ffIt = pageFields.begin(), ffEnd = pageFields.end();
for ( ; ffIt != ffEnd; ++ffIt )
{
Okular::FormField * ff = *ffIt;
FormWidgetIface * w = FormWidgetFactory::createWidget( ff, widget() );
if ( w )
{
w->setPageItem( item );
w->setFormWidgetsController( d->formWidgetsController() );
w->setVisibility( d->m_formsVisible );
w->setCanBeFilled( d->document->isAllowed( Okular::AllowFillForms ) );
item->formWidgets().insert( ff->name(), w );
hasformwidgets = true;
}
}
}
// invalidate layout so relayout/repaint will happen on next viewport change
if ( haspages )
// TODO for Enrico: Check if doing always the slotRelayoutPages() is not
// suboptimal in some cases, i'd say it is not but a recheck will not hurt
// Need slotRelayoutPages() here instead of d->dirtyLayout = true
// because opening a document from another document will not trigger a viewportchange
// so pages are never relayouted
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( widget()->mapFromGlobal( QCursor::pos() ) );
setWidgetResizable(true);
}
// 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() ),
PageViewMessage::Info, 4000 );
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->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 );
}
}
void PageView::notifyViewportChanged( bool smoothMove )
{
// if we are the one changing viewport, skip this nofity
if ( d->blockViewport )
return;
// block setViewport outgoing calls
d->blockViewport = true;
// find PageViewItem matching the viewport description
const Okular::DocumentViewport & vp = d->document->viewport();
PageViewItem * item = 0;
QVector< PageViewItem * >::const_iterator iIt = d->items.begin(), iEnd = d->items.end();
for ( ; iIt != iEnd; ++iIt )
if ( (*iIt)->pageNumber() == vp.pageNumber )
{
item = *iIt;
break;
}
if ( !item )
{
kWarning() << "viewport for page" << vp.pageNumber << "has no matching item!";
d->blockViewport = false;
return;
}
#ifdef PAGEVIEW_DEBUG
kDebug() << "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 QRect & r = item->geometry();
int newCenterX = r.left(),
newCenterY = r.top();
if ( vp.rePos.enabled )
{
if ( vp.rePos.pos == Okular::DocumentViewport::Center )
{
newCenterX += (int)( vp.rePos.normalizedX * (double)r.width() );
newCenterY += (int)( vp.rePos.normalizedY * (double)r.height() );
}
else
{
// TopLeft
newCenterX += (int)( vp.rePos.normalizedX * (double)r.width() + viewport()->width() / 2 );
newCenterY += (int)( vp.rePos.normalizedY * (double)r.height() + viewport()->height() / 2 );
}
}
else
{
newCenterX += r.width() / 2;
newCenterY += viewport()->height() / 2 - 10;
}
// if smooth movement requested, setup parameters and start it
if ( smoothMove )
{
d->viewportMoveActive = true;
d->viewportMoveTime.start();
d->viewportMoveDest.setX( newCenterX );
d->viewportMoveDest.setY( newCenterY );
if ( !d->viewportMoveTimer )
{
d->viewportMoveTimer = new QTimer( this );
connect( d->viewportMoveTimer, SIGNAL( timeout() ),
this, SLOT( slotMoveViewport() ) );
}
d->viewportMoveTimer->start( 25 );
verticalScrollBar()->setEnabled( false );
horizontalScrollBar()->setEnabled( false );
}
else
center( newCenterX, newCenterY );
d->blockPixmapsRequest = false;
// request visible pixmaps in the current viewport and recompute it
slotRequestVisiblePixmaps();
// enable setViewport calls
d->blockViewport = false;
// update zoom text if in a ZoomFit/* zoom mode
if ( d->zoomMode != ZoomFixed )
updateZoomText();
// since the page has moved below cursor, update it
updateCursor( widget()->mapFromGlobal( QCursor::pos() ) );
}
void PageView::notifyPageChanged( int pageNumber, int changedFlags )
{
// only handle pixmap / highlight changes notifies
if ( changedFlags & DocumentObserver::Bookmark )
return;
// iterate over visible items: if page(pageNumber) is one of them, repaint it
QLinkedList< PageViewItem * >::const_iterator iIt = d->visibleItems.begin(), iEnd = d->visibleItems.end();
for ( ; iIt != iEnd; ++iIt )
if ( (*iIt)->pageNumber() == pageNumber )
{
// update item's rectangle plus the little outline
QRect expandedRect = (*iIt)->geometry();
expandedRect.adjust( -1, -1, 3, 3 );
widget()->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( widget()->mapFromGlobal( QCursor::pos() ) );
}
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::Settings::memoryLevel() != Okular::Settings::EnumMemoryLevel::Aggressive )
{
// if the item is visible, forbid unloading
QLinkedList< PageViewItem * >::const_iterator vIt = d->visibleItems.begin(), vEnd = d->visibleItems.end();
for ( ; vIt != vEnd; ++vIt )
if ( (*vIt)->pageNumber() == pageNumber )
return false;
}
else
{
// forbid unloading of the visible items, and of the previous and next
QLinkedList< PageViewItem * >::const_iterator vIt = d->visibleItems.begin(), vEnd = d->visibleItems.end();
for ( ; vIt != vEnd; ++vIt )
if ( abs( (*vIt)->pageNumber() - pageNumber ) <= 1 )
return false;
}
// if hidden premit unloading
return true;
}
//END DocumentObserver inherited methods
//BEGIN widget events
void PageView::contentsPaintEvent(QPaintEvent *pe)
{
// create the rect into contents from the clipped screen rect
QRect viewportRect = viewport()->rect();
viewportRect.translate( horizontalScrollBar()->value(), verticalScrollBar()->value() );
QRect contentsRect = pe->rect().intersect( viewportRect );
if ( !contentsRect.isValid() )
return;
#ifdef PAGEVIEW_DEBUG
kDebug() << "paintevent" << contentsRect;
#endif
// create the screen painter. a pixel painted at contentsX,contentsY
// appears to the top-left corner of the scrollview.
QPainter screenPainter( widget() );
// 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].normalized().intersect( viewportRect );
if ( !contentsRect.isValid() )
continue;
}
#ifdef PAGEVIEW_DEBUG
kDebug() << contentsRect;
#endif
// note: this check will take care of all things requiring alpha blending (not only selection)
bool wantCompositing = !selectionRect.isNull() && contentsRect.intersects( selectionRect );
if ( wantCompositing && Okular::Settings::enableCompositing() )
{
// create pixmap and open a painter over it (contents{left,top} becomes pixmap {0,0})
QPixmap doubleBuffer( contentsRect.size() );
QPainter pixmapPainter( &doubleBuffer );
pixmapPainter.translate( -contentsRect.left(), -contentsRect.top() );
// 1) Layer 0: paint items and clear bg on unpainted rects
drawDocumentOnPainter( contentsRect, &pixmapPainter );
// 2) Layer 1a: paint (blend) transparent selection
if ( !selectionRect.isNull() && selectionRect.intersects( contentsRect ) &&
!selectionRectInternal.contains( contentsRect ) )
{
QRect blendRect = selectionRectInternal.intersect( 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(), blendRect.height() );
QPainter p( &blendedPixmap );
p.drawPixmap( 0, 0, doubleBuffer,
blendRect.left() - contentsRect.left(), blendRect.top() - contentsRect.top(),
blendRect.width(), blendRect.height() );
QColor blCol = selBlendColor.dark( 140 );
blCol.setAlphaF( 0.2 );
p.fillRect( blendedPixmap.rect(), blCol );
// 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 );
}
// 3) Layer 1: give annotator painting control
if ( d->annotator && d->annotator->routePaints( contentsRect ) )
d->annotator->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 );
// 2) Layer 1: paint opaque selection
if ( !selectionRect.isNull() && selectionRect.intersects( contentsRect ) &&
!selectionRectInternal.contains( contentsRect ) )
{
screenPainter.setPen( palette().color( QPalette::Active, QPalette::Highlight ).dark(110) );
screenPainter.drawRect( selectionRect );
}
// 3) Layer 1: give annotator painting control
if ( d->annotator && d->annotator->routePaints( contentsRect ) )
d->annotator->routePaint( &screenPainter, contentsRect );
// 4) Layer 2: overlays
if ( Okular::Settings::debugDrawBoundaries() )
{
screenPainter.setPen( Qt::red );
screenPainter.drawRect( contentsRect );
}
}
}
}
void PageView::resizeEvent( QResizeEvent *e )
{
if ( d->items.isEmpty() )
{
widget()->resize(e->size());
return;
}
// start a timer that will refresh the pixmap after 0.2s
if ( !d->delayResizeTimer )
{
d->delayResizeTimer = new QTimer( this );
d->delayResizeTimer->setSingleShot( true );
connect( d->delayResizeTimer, SIGNAL( timeout() ), this, SLOT( slotRelayoutPages() ) );
}
d->delayResizeTimer->start( 200 );
}
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 ) || d->mouseMidZooming )
return;
// if viewport is moving, disable keys handling
if ( d->viewportMoveActive )
return;
// move/scroll page by using keys
switch ( e->key() )
{
case Qt::Key_Down:
case Qt::Key_PageDown:
case Qt::Key_Space:
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_Space && ( e->modifiers() & Qt::ShiftModifier ) != Qt::ShiftModifier ) )
{
// 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 ( e->key() == Qt::Key_Down )
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 += d->document->currentPage() ? viewColumns() : 1;
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 in single page mode and at the top of the screen, go to \ page
if ( Okular::Settings::viewContinuous() || verticalScrollBar()->value() > verticalScrollBar()->minimum() )
{
if ( e->key() == Qt::Key_Up )
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 );
}
}
break;
case Qt::Key_Left:
horizontalScrollBar()->triggerAction( QScrollBar::SliderSingleStepSub );
break;
case Qt::Key_Right:
horizontalScrollBar()->triggerAction( QScrollBar::SliderSingleStepAdd );
break;
case Qt::Key_Escape:
selectionClear();
d->mousePressPos = QPoint();
if ( d->aPrevAction )
{
d->aPrevAction->trigger();
d->aPrevAction = 0;
}
break;
case Qt::Key_Shift:
case Qt::Key_Control:
if ( d->autoScrollTimer )
{
if ( d->autoScrollTimer->isActive() )
d->autoScrollTimer->stop();
else
slotAutoScoll();
return;
}
// else fall trhough
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->routeEvents() )
{
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)
}
static QPoint rotateInRect( const QPoint &rotated, Okular::Rotation rotation )
{
QPoint ret;
switch ( rotation )
{
case Okular::Rotation90:
ret = QPoint( rotated.y(), -rotated.x() );
break;
case Okular::Rotation180:
ret = QPoint( -rotated.x(), -rotated.y() );
break;
case Okular::Rotation270:
ret = QPoint( -rotated.y(), rotated.x() );
break;
case Okular::Rotation0: // no modifications
default: // other cases
ret = rotated;
}
return ret;
}
void PageView::contentsMouseMoveEvent( QMouseEvent * e )
{
// 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 ( d->mouseMidZooming && (e->buttons() & Qt::MidButton) )
{
int mouseY = e->globalPos().y();
int deltaY = d->mouseMidLastY - mouseY;
// wrap mouse from top to bottom
QRect mouseContainer = KGlobalSettings::desktopGeometry( this );
if ( mouseY <= mouseContainer.top() + 4 &&
d->zoomFactor < 3.99 )
{
mouseY = mouseContainer.bottom() - 5;
QCursor::setPos( e->globalPos().x(), mouseY );
}
// wrap mouse from bottom to top
else if ( mouseY >= mouseContainer.bottom() - 4 &&
d->zoomFactor > 0.11 )
{
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 ) );
updateZoom( ZoomRefreshCurrent );
viewport()->repaint();
}
return;
}
// if we're editing an annotation, dispatch event to it
if ( d->annotator && d->annotator->routeEvents() )
{
PageViewItem * pageItem = pickItemOnPoint( e->x(), e->y() );
d->annotator->routeEvent( e, pageItem );
return;
}
bool leftButton = (e->buttons() == Qt::LeftButton);
bool rightButton = (e->buttons() == Qt::RightButton);
switch ( d->mouseMode )
{
case MouseNormal:
if ( leftButton )
{
if ( d->mouseAnn )
{
PageViewItem * pageItem = pickItemOnPoint( e->x(), e->y() );
if ( pageItem )
{
const QRect & itemRect = pageItem->geometry();
QPoint newpos( e->x() - itemRect.left(), e->y() - itemRect.top() );
Okular::NormalizedRect r = d->mouseAnn->boundingRectangle();
QPoint p( newpos - d->mouseAnnPos );
QPointF pf( rotateInRect( p, pageItem->page()->totalOrientation() ) );
if ( pageItem->page()->totalOrientation() % 2 == 0 )
{
pf.rx() /= pageItem->width();
pf.ry() /= pageItem->height();
}
else
{
pf.rx() /= pageItem->height();
pf.ry() /= pageItem->width();
}
d->mouseAnn->translate( Okular::NormalizedPoint( pf.x(), pf.y() ) );
d->mouseAnnPos = newpos;
d->document->modifyPageAnnotation( pageItem->pageNumber(), d->mouseAnn );
}
}
// drag page
else if ( !d->mouseGrabPos.isNull() )
{
QPoint mousePos = e->globalPos();
QPoint delta = d->mouseGrabPos - mousePos;
// wrap mouse from top to bottom
QRect mouseContainer = KGlobalSettings::desktopGeometry( this );
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
horizontalScrollBar()->setValue(horizontalScrollBar()->value() + delta.x());
verticalScrollBar()->setValue(verticalScrollBar()->value() + delta.y());
}
}
else if ( rightButton && !d->mousePressPos.isNull() )
{
// 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(e->x() + deltaX, e->y() + deltaY);
selectionStart( newPos, palette().color( QPalette::Active, QPalette::Highlight ).light( 120 ), false );
selectionEndPoint( e->pos() );
break;
}
}
else
{
// only hovering the page, so update the cursor
updateCursor( widget()->mapFromGlobal( QCursor::pos() ) );
}
break;
case MouseZoom:
case MouseSelect:
case MouseImageSelect:
// set second corner of selection
if ( d->mouseSelecting )
selectionEndPoint( e->pos() );
break;
case MouseTextSelect:
// if mouse moves 5 px away from the press point and the document soupports text extraction, do 'textselection'
if ( !d->mouseTextSelecting && !d->mousePressPos.isNull() && d->document->supportsSearching() && ( ( e->pos() - d->mouseSelectPos ).manhattanLength() > 5 ) )
{
d->mouseTextSelecting = true;
}
if ( d->mouseTextSelecting )
{
int first = -1;
QList< Okular::RegularAreaRect * > selections = textSelections( e->pos(), d->mouseSelectPos, first );
QSet< int > pagesWithSelectionSet;
for ( int i = 0; i < selections.count(); ++i )
pagesWithSelectionSet.insert( i + first );
QSet< int > noMoreSelectedPages = d->pagesWithTextSelection - pagesWithSelectionSet;
// clear the selection from pages not selected anymore
foreach( int p, noMoreSelectedPages )
{
d->document->setPageTextSelection( p, 0, 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;
}
updateCursor( widget()->mapFromGlobal( QCursor::pos() ) );
break;
}
}
void PageView::contentsMousePressEvent( QMouseEvent * e )
{
// 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 || d->mouseMidZooming || 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->mouseMidZooming = true;
d->mouseMidLastY = e->globalPos().y();
setCursor( Qt::SizeVerCursor );
return;
}
// if we're editing an annotation, dispatch event to it
if ( d->annotator && d->annotator->routeEvents() )
{
PageViewItem * pageItem = pickItemOnPoint( e->x(), e->y() );
d->annotator->routeEvent( e, pageItem );
return;
}
// update press / 'start drag' mouse position
d->mousePressPos = e->globalPos();
// handle mode dependant 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 != MouseTextSelect )
textSelectionClear();
switch ( d->mouseMode )
{
case MouseNormal: // drag start / click / link following
if ( leftButton )
{
PageViewItem * pageItem = 0;
if ( ( e->modifiers() & Qt::ControlModifier ) && ( pageItem = pickItemOnPoint( e->x(), e->y() ) ) )
{
// find out normalized mouse coords inside current item
const QRect & itemRect = pageItem->geometry();
double nX = (double)(e->x() - itemRect.left()) / itemRect.width();
double nY = (double)(e->y() - itemRect.top()) / itemRect.height();
const Okular::ObjectRect * orect = pageItem->page()->objectRect( Okular::ObjectRect::OAnnotation, nX, nY, itemRect.width(), itemRect.height() );
d->mouseAnnPos = QPoint( e->x() - itemRect.left(), e->y() - itemRect.top() );
if ( orect )
d->mouseAnn = ( (Okular::AnnotationObjectRect *)orect )->annotation();
// consider no annotation caught if its type is not movable
if ( d->mouseAnn && !AnnotationGuiUtils::canBeMoved( d->mouseAnn ) )
d->mouseAnn = 0;
}
if ( !d->mouseAnn )
{
d->mouseGrabPos = d->mouseOnRect ? QPoint() : d->mousePressPos;
if ( !d->mouseOnRect )
setCursor( Qt::SizeAllCursor );
}
}
else if ( rightButton )
{
PageViewItem * pageItem = pickItemOnPoint( e->x(), e->y() );
if ( pageItem )
{
// find out normalized mouse coords inside current item
const QRect & itemRect = pageItem->geometry();
double nX = (double)(e->x() - itemRect.left()) / itemRect.width();
double nY = (double)(e->y() - itemRect.top()) / itemRect.height();
Okular::Annotation * ann = 0;
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 )
{
AnnotationPopup popup( ann, d->document, this );
popup.setPageNumber( pageItem->pageNumber() );
connect( &popup, SIGNAL( setAnnotationWindow( Okular::Annotation* ) ),
this, SLOT( setAnnotationWindow( Okular::Annotation* ) ) );
connect( &popup, SIGNAL( removeAnnotationWindow( Okular::Annotation* ) ),
this, SLOT( removeAnnotationWindow( Okular::Annotation* ) ) );
popup.exec( e->globalPos() );
}
}
}
break;
case MouseZoom: // set first corner of the zoom rect
if ( leftButton )
selectionStart( e->pos(), palette().color( QPalette::Active, QPalette::Highlight ), false );
else if ( rightButton )
updateZoom( ZoomOut );
break;
case MouseSelect: // set first corner of the selection rect
case MouseImageSelect:
if ( leftButton )
{
selectionStart( e->pos(), palette().color( QPalette::Active, QPalette::Highlight ).light( 120 ), false );
}
break;
case MouseTextSelect:
d->mouseSelectPos = e->pos();
if ( !rightButton )
{
textSelectionClear();
}
break;
}
}
void PageView::contentsMouseReleaseEvent( QMouseEvent * e )
{
// stop the drag scrolling
d->dragScrollTimer.stop();
// 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( 0, e->globalPos() );
return;
}
// don't perform any mouse action when viewport is autoscrolling
if ( d->viewportMoveActive )
return;
// handle mode indepent mid buttom zoom
if ( d->mouseMidZooming && (e->button() == Qt::MidButton) )
{
d->mouseMidZooming = false;
// request pixmaps since it was disabled during drag
slotRequestVisiblePixmaps();
// the cursor may now be over a link.. update it
updateCursor( e->pos() );
return;
}
// if we're editing an annotation, dispatch event to it
if ( d->annotator && d->annotator->routeEvents() )
{
PageViewItem * pageItem = pickItemOnPoint( e->x(), e->y() );
d->annotator->routeEvent( e, pageItem );
return;
}
if ( d->mouseAnn )
{
setCursor( Qt::ArrowCursor );
d->mouseAnn = 0;
}
bool leftButton = e->button() == Qt::LeftButton;
bool rightButton = e->button() == Qt::RightButton;
switch ( d->mouseMode )
{
case MouseNormal:{
// return the cursor to its normal state after dragging
if ( cursor().shape() == Qt::SizeAllCursor )
updateCursor( e->pos() );
PageViewItem * pageItem = pickItemOnPoint( e->x(), e->y() );
// if the mouse has not moved since the press, that's a -click-
if ( leftButton && pageItem && d->mousePressPos == e->globalPos())
{
double nX = (double)(e->x() - pageItem->geometry().left()) / (double)pageItem->width(),
nY = (double)(e->y() - pageItem->geometry().top()) / (double)pageItem->height();
const Okular::ObjectRect * rect;
rect = pageItem->page()->objectRect( Okular::ObjectRect::Action, nX, nY, pageItem->width(), pageItem->height() );
if ( rect )
{
// handle click over a link
const Okular::Action * action = static_cast< const Okular::Action * >( rect->object() );
d->document->processAction( action );
}
else
{
// TODO: find a better way to activate the source reference "links"
// for the moment they are activated with Shift + left click
rect = e->modifiers() == Qt::ShiftModifier ? pageItem->page()->objectRect( Okular::ObjectRect::SourceRef, nX, nY, pageItem->width(), pageItem->height() ) : 0;
if ( rect )
{
const Okular::SourceReference * ref = static_cast< const Okular::SourceReference * >( rect->object() );
d->document->processSourceReference( ref );
}
#if 0
// 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(), PAGEVIEW_ID );
}*/
#endif
}
}
else if ( rightButton )
{
if ( pageItem && d->mousePressPos == e->globalPos() )
{
double nX = (double)(e->x() - pageItem->geometry().left()) / (double)pageItem->width(),
nY = (double)(e->y() - pageItem->geometry().top()) / (double)pageItem->height();
const Okular::ObjectRect * rect;
rect = pageItem->page()->objectRect( Okular::ObjectRect::Action, nX, nY, pageItem->width(), pageItem->height() );
if ( rect )
{
// handle right click over a link
const Okular::Action * link = static_cast< const Okular::Action * >( rect->object() );
// creating the menu and its actions
KMenu menu( this );
QAction * actProcessLink = menu.addAction( i18n( "Follow This Link" ) );
QAction * actCopyLinkLocation = 0;
if ( dynamic_cast< const Okular::BrowseAction * >( link ) )
actCopyLinkLocation = menu.addAction( KIcon( "edit-copy" ), i18n( "Copy Link Address" ) );
QAction * res = menu.exec( e->globalPos() );
if ( res )
{
if ( res == actProcessLink )
{
d->document->processAction( link );
}
else if ( res == actCopyLinkLocation )
{
const Okular::BrowseAction * browseLink = static_cast< const Okular::BrowseAction * >( link );
QClipboard *cb = QApplication::clipboard();
cb->setText( browseLink->url(), QClipboard::Clipboard );
if ( cb->supportsSelection() )
cb->setText( browseLink->url(), QClipboard::Selection );
}
}
}
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 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() : 0, e->globalPos() );
}
}
}break;
case MouseZoom:
// 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)widget()->width());
double nY = (double)(selRect.top() + selRect.bottom()) / (2.0 * (double)widget()->height());
// zoom up to 400%
if ( d->zoomFactor <= 4.0 || zoom <= 1.0 )
{
d->zoomFactor *= zoom;
viewport()->setUpdatesEnabled( false );
updateZoom( ZoomRefreshCurrent );
viewport()->setUpdatesEnabled( true );
}
// recenter view and update the viewport
center( (int)(nX * widget()->width()), (int)(nY * widget()->height()) );
widget()->update();
// hide message box and delete overlay window
selectionClear();
}
break;
case MouseSelect:
case MouseImageSelect:
{
// if mouse is released and selection is null this is a rightClick
if ( rightButton && !d->mouseSelecting )
{
PageViewItem * pageItem = pickItemOnPoint( e->x(), e->y() );
emit rightClick( pageItem ? pageItem->page() : 0, 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 = 0;
}
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=0;
QVector< PageViewItem * >::const_iterator iIt = d->items.begin(), iEnd = d->items.end();
for ( ; iIt != iEnd; ++iIt )
{
PageViewItem * item = *iIt;
const QRect & itemRect = item->geometry();
if ( selectionRect.intersects( itemRect ) )
{
// request the textpage if there isn't one
okularPage= item->page();
kWarning() << "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.intersect( itemRect );
relativeRect.translate( -itemRect.left(), -itemRect.top() );
Okular::RegularAreaRect rects;
rects.append( Okular::NormalizedRect( relativeRect, item->width(), item->height() ) );
selectedText += okularPage->text( &rects );
}
}
}
// popup that ask to copy:text and copy/save:image
KMenu menu( this );
QAction *textToClipboard = 0, *speakText = 0, *imageToClipboard = 0, *imageToFile = 0;
if ( d->document->supportsSearching() && !selectedText.isEmpty() )
{
menu.addTitle( i18np( "Text (1 character)", "Text (%1 characters)", selectedText.length() ) );
textToClipboard = menu.addAction( KIcon("edit-copy"), i18n( "Copy to Clipboard" ) );
if ( !d->document->isAllowed( Okular::AllowCopy ) )
{
textToClipboard->setEnabled( false );
textToClipboard->setText( i18n("Copy forbidden by DRM") );
}
if ( Okular::Settings::useKTTSD() )
speakText = menu.addAction( KIcon("kttsd"), i18n( "Speak Text" ) );
}
menu.addTitle( i18n( "Image (%1 by %2 pixels)", selectionRect.width(), selectionRect.height() ) );
imageToClipboard = menu.addAction( KIcon("image"), i18n( "Copy to Clipboard" ) );
imageToFile = menu.addAction( KIcon("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 );
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 = KFileDialog::getSaveFileName( KUrl(), "image/png image/jpeg", this );
if ( fileName.isEmpty() )
d->messageWindow->display( i18n( "File not saved." ), PageViewMessage::Warning );
else
{
KMimeType::Ptr mime = KMimeType::findByUrl( fileName );
QString type;
if ( !mime )
type = "PNG";
else
type = mime->name().section( '/', -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 );
}
else if ( choice == speakText )
{
// [2] speech selection using KTTSD
// Albert says is this ever necessary?
// we already attached on Part constructor
// If KTTSD not running, start it.
QDBusReply<bool> reply = QDBusConnection::sessionBus().interface()->isServiceRegistered("org.kde.kttsd");
bool kttsdactive = false;
if ( reply.isValid() )
kttsdactive = reply.value();
if ( !kttsdactive )
{
QString error;
if (KToolInvocation::startServiceByDesktopName("kttsd", QStringList(), &error))
{
d->messageWindow->display( i18n("Starting KTTSD Failed: %1", error) );
}
else
{
kttsdactive = true;
}
}
if ( kttsdactive )
{
// creating the connection to the kspeech interface
QDBusInterface kspeech("org.kde.kttsd", "/KSpeech", "org.kde.KSpeech");
kspeech.call("setApplicationName", "okular");
kspeech.call("say", selectedText, 0);
}
}
}
}
// 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 = 0;
}
}break;
case MouseTextSelect:
setCursor( Qt::ArrowCursor );
if ( d->mouseTextSelecting )
{
d->mouseTextSelecting = false;
// textSelectionClear();
}
else if ( !d->mousePressPos.isNull() && rightButton )
{
KMenu menu( this );
QAction *textToClipboard = menu.addAction( KIcon( "edit-copy" ), i18n( "Copy Text" ) );
if ( !d->document->isAllowed( Okular::AllowCopy ) )
{
textToClipboard->setEnabled( false );
textToClipboard->setText( i18n("Copy forbidden by DRM") );
}
QAction *choice = menu.exec( e->globalPos() );
// check if the user really selected an action
if ( choice )
{
if ( choice == textToClipboard )
copyTextSelection();
}
}
break;
}
// reset mouse press / 'drag start' position
d->mousePressPos = QPoint();
}
void PageView::wheelEvent( QWheelEvent *e )
{
// don't perform any mouse action when viewport is autoscrolling
if ( d->viewportMoveActive )
return;
if ( !d->document->isOpened() )
{
QScrollArea::wheelEvent( e );
return;
}
int delta = e->delta(),
vScroll = verticalScrollBar()->value();
e->accept();
if ( (e->modifiers() & Qt::ControlModifier) == Qt::ControlModifier ) {
if ( e->delta() < 0 )
slotZoomOut();
else
slotZoomIn();
}
else if ( delta <= -120 && !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 += d->document->currentPage() ? viewColumns() : 1;
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 >= 120 && !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
QScrollArea::wheelEvent( e );
QPoint cp = widget()->mapFromGlobal(mapToGlobal(e->pos()));
updateCursor(cp);
}
void PageView::dragEnterEvent( QDragEnterEvent * ev )
{
ev->accept();
}
void PageView::dragMoveEvent( QDragMoveEvent * ev )
{
ev->accept();
}
void PageView::dropEvent( QDropEvent * ev )
{
if ( KUrl::List::canDecode( ev->mimeData() ) )
emit urlDropped( KUrl::List::fromMimeData( ev->mimeData() ).first() );
}
//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 ( selectionRect.intersects( item->geometry() ) )
affectedItemsSet.insert( item->pageNumber() );
}
#ifdef PAGEVIEW_DEBUG
kDebug() << ">>>> 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
kDebug() << ">>>> pages:" << affectedItemsIds;
#endif
firstpage = affectedItemsIds.first();
if ( affectedItemsIds.count() == 1 )
{
PageViewItem * item = d->items[ affectedItemsIds.first() ];
selectionRect.translate( -item->geometry().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->geometry().intersect( selectionRect ).translated( -first->geometry().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->geometry().intersect( selectionRect ).translated( -last->geometry().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 )
{
// when checking if an Item is contained in contentsRect, instead of
// growing PageViewItems rects (for keeping outline into account), we
// grow the contentsRect
QRect checkRect = contentsRect;
checkRect.adjust( -3, -3, 1, 1 );
// create a region from which we'll subtract painted rects
QRegion remainingArea( contentsRect );
// iterate over all items painting the ones intersecting contentsRect
QVector< PageViewItem * >::const_iterator iIt = d->items.begin(), iEnd = d->items.end();
for ( ; iIt != iEnd; ++iIt )
{
// check if a piece of the page intersects the contents rect
if ( !(*iIt)->geometry().intersects( checkRect ) )
continue;
// get item and item's outline geometries
PageViewItem * item = *iIt;
QRect itemGeometry = item->geometry(),
outlineGeometry = itemGeometry;
outlineGeometry.adjust( -1, -1, 3, 3 );
// move the painter to the top-left corner of the page
p->save();
p->translate( itemGeometry.left(), itemGeometry.top() );
// draw the page outline (black border and 2px bottom-right shadow)
if ( !itemGeometry.contains( contentsRect ) )
{
int itemWidth = itemGeometry.width(),
itemHeight = itemGeometry.height();
// draw simple outline
p->setPen( Qt::black );
p->drawRect( -1, -1, itemWidth + 1, itemHeight + 1 );
// draw bottom/right gradient
static int levels = 2;
int r = QColor(Qt::gray).red() / (levels + 2),
g = QColor(Qt::gray).green() / (levels + 2),
b = QColor(Qt::gray).blue() / (levels + 2);
for ( int i = 0; i < levels; i++ )
{
p->setPen( QColor( r * (i+2), g * (i+2), b * (i+2) ) );
p->drawLine( i, i + itemHeight + 1, i + itemWidth + 1, i + itemHeight + 1 );
p->drawLine( i + itemWidth + 1, i, i + itemWidth + 1, i + itemHeight );
p->setPen( Qt::gray );
p->drawLine( -1, i + itemHeight + 1, i - 1, i + itemHeight + 1 );
p->drawLine( i + itemWidth + 1, -1, i + itemWidth + 1, i - 1 );
}
}
// draw the page using the PagePainter with all flags active
if ( contentsRect.intersects( itemGeometry ) )
{
QRect pixmapRect = contentsRect.intersect( itemGeometry );
pixmapRect.translate( -itemGeometry.left(), -itemGeometry.top() );
PagePainter::paintPageOnPainter( p, item->page(), PAGEVIEW_ID, pageflags,
itemGeometry.width(), itemGeometry.height(), pixmapRect );
}
// remove painted area from 'remainingArea' and restore painter
remainingArea -= outlineGeometry.intersect( contentsRect );
p->restore();
}
// fill with background color the unpainted area
const QVector<QRect> &backRects = remainingArea.rects();
int backRectsNumber = backRects.count();
// the previous color here was Qt::gray
QColor backColor = widget()->palette().color( QPalette::Dark );
for ( int jr = 0; jr < backRectsNumber; jr++ )
p->fillRect( backRects[ jr ], backColor );
}
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;
if ( d->zoomMode == ZoomFixed )
{
width *= zoom;
height *= zoom;
item->setWHZ( (int)width, (int)height, d->zoomFactor );
}
else if ( d->zoomMode == ZoomFitWidth )
{
height = okularPage->ratio() * colWidth;
item->setWHZ( colWidth, (int)height, (double)colWidth / width );
d->zoomFactor = (double)colWidth / width;
}
else if ( d->zoomMode == ZoomFitPage )
{
double scaleW = (double)colWidth / (double)width;
double scaleH = (double)rowHeight / (double)height;
zoom = qMin( scaleW, scaleH );
item->setWHZ( (int)(zoom * width), (int)(zoom * height), zoom );
d->zoomFactor = zoom;
}
#ifndef NDEBUG
else
kDebug() << "calling updateItemSize with unrecognized d->zoomMode!";
#endif
}
PageViewItem * PageView::pickItemOnPoint( int x, int y )
{
PageViewItem * item = 0;
QLinkedList< PageViewItem * >::const_iterator iIt = d->visibleItems.constBegin(), iEnd = d->visibleItems.constEnd();
for ( ; iIt != iEnd; ++iIt )
{
PageViewItem * i = *iIt;
const QRect & r = i->geometry();
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() )
{
QSet< int >::ConstIterator it = d->pagesWithTextSelection.constBegin(), itEnd = d->pagesWithTextSelection.constEnd();
for ( ; it != itEnd; ++it )
d->document->setPageTextSelection( *it, 0, 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::selectionEndPoint( const QPoint & pos )
{
if ( !d->mouseSelecting )
return;
if (pos.x() < horizontalScrollBar()->value()) d->dragScrollVector.setX(pos.x() - horizontalScrollBar()->value());
else if (horizontalScrollBar()->value() + viewport()->width() < pos.x()) d->dragScrollVector.setX(pos.x() - horizontalScrollBar()->value() - viewport()->width());
else d->dragScrollVector.setX(0);
if (pos.y() < verticalScrollBar()->value()) d->dragScrollVector.setY(pos.y() - verticalScrollBar()->value());
else if (verticalScrollBar()->value() + viewport()->height() < pos.y()) d->dragScrollVector.setY(pos.y() - verticalScrollBar()->value() - viewport()->height());
else d->dragScrollVector.setY(0);
if (d->dragScrollVector != QPoint(0, 0))
{
if (!d->dragScrollTimer.isActive()) d->dragScrollTimer.start(100);
}
else d->dragScrollTimer.stop();
// update the selection rect
QRect updateRect = d->mouseSelectionRect;
d->mouseSelectionRect.setBottomLeft( pos );
updateRect |= d->mouseSelectionRect;
widget()->update( updateRect.adjusted( -1, -1, 1, 1 ) );
}
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( PageViewItem * item, const QPoint & startPoint, const QPoint & endPoint )
{
const QRect & geometry = item->geometry();
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
kDebug().nospace() << "text areas (" << okularPage->number() << "): " << ( selectionArea ? QString::number( selectionArea->count() ) : "(none)" );
#endif
return selectionArea;
}
void PageView::selectionClear()
{
QRect updatedRect = d->mouseSelectionRect.normalized().adjusted( 0, 0, 1, 1 );
d->mouseSelecting = false;
d->mouseSelectionRect.setCoords( 0, 0, 0, 0 );
widget()->update( updatedRect );
}
void PageView::updateZoom( ZoomMode newZoomMode )
{
if ( newZoomMode == ZoomFixed )
{
if ( d->aZoom->currentItem() == 0 )
newZoomMode = ZoomFitWidth;
else if ( d->aZoom->currentItem() == 1 )
newZoomMode = ZoomFitPage;
}
float newFactor = d->zoomFactor;
QAction * checkedZoomAction = 0;
switch ( newZoomMode )
{
case ZoomFixed:{ //ZoomFixed case
QString z = d->aZoom->currentText();
// kdelibs4 sometimes adds accelerators to actions' text directly :(
z.remove ('&');
z.remove ('%');
newFactor = KGlobal::locale()->readNumber( z ) / 100.0;
}break;
case ZoomIn:
newFactor += (newFactor > 0.99) ? ( newFactor > 1.99 ? 0.5 : 0.2 ) : 0.1;
newZoomMode = ZoomFixed;
break;
case ZoomOut:
newFactor -= (newFactor > 1.01) ? ( newFactor > 2.01 ? 0.5 : 0.2 ) : 0.1;
newZoomMode = ZoomFixed;
break;
case ZoomFitWidth:
checkedZoomAction = d->aZoomFitWidth;
break;
case ZoomFitPage:
checkedZoomAction = d->aZoomFitPage;
break;
case ZoomFitText:
checkedZoomAction = d->aZoomFitText;
break;
case ZoomRefreshCurrent:
newZoomMode = ZoomFixed;
d->zoomFactor = -1;
break;
}
if ( newFactor > 4.0 )
newFactor = 4.0;
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->aZoomFitText->setChecked( checkedZoomAction == d->aZoomFitText );
}
// store zoom settings
Okular::Settings::setZoomMode( newZoomMode );
Okular::Settings::setZoomFactor( newFactor );
Okular::Settings::self()->writeConfig();
}
d->aZoomIn->setEnabled( d->zoomFactor < 3.9 );
d->aZoomOut->setEnabled( d->zoomFactor > 0.2 );
}
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("Fit Text")*/;
// add percent items
QString double_oh( "00" );
const float zoomValue[10] = { 0.12, 0.25, 0.33, 0.50, 0.66, 0.75, 1.00, 1.25, 1.50, 2.00 };
int idx = 0,
selIdx = 2; // use 3 if "fit text" present
bool inserted = false; //use: "d->zoomMode != ZoomFixed" to hide Fit/* zoom ratio
while ( idx < 10 || !inserted )
{
float value = idx < 10 ? zoomValue[ 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++;
QString localValue( KGlobal::locale()->formatNumber( value * 100.0, 2 ) );
localValue.remove( KGlobal::locale()->decimalSymbol() + double_oh );
// remove a trailing zero in numbers like 66.70
if ( localValue.right( 1 ) == QLatin1String( "0" ) && localValue.indexOf( KGlobal::locale()->decimalSymbol() ) > -1 )
localValue.chop( 1 );
translated << QString( "%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 == ZoomFitText )
selIdx = 2;
d->aZoom->setCurrentItem( selIdx );
}
void PageView::updateCursor( const QPoint &p )
{
// detect the underlaying page (if present)
PageViewItem * pageItem = pickItemOnPoint( p.x(), p.y() );
if ( pageItem )
{
double nX = (double)(p.x() - pageItem->geometry().left()) / (double)pageItem->width(),
nY = (double)(p.y() - pageItem->geometry().top()) / (double)pageItem->height();
// if over a ObjectRect (of type Link) change cursor to hand
if ( d->mouseMode == MouseTextSelect )
setCursor( Qt::IBeamCursor );
else if ( d->mouseAnn )
setCursor( Qt::ClosedHandCursor );
else
{
const Okular::ObjectRect * linkobj = pageItem->page()->objectRect( Okular::ObjectRect::Action, nX, nY, pageItem->width(), pageItem->height() );
const Okular::ObjectRect * annotobj = pageItem->page()->objectRect( Okular::ObjectRect::OAnnotation, nX, nY, pageItem->width(), pageItem->height() );
if ( linkobj && !annotobj )
{
d->mouseOnRect = true;
setCursor( Qt::PointingHandCursor );
}
else
{
d->mouseOnRect = false;
if ( annotobj
&& ( QApplication::keyboardModifiers() & Qt::ControlModifier )
&& AnnotationGuiUtils::canBeMoved( static_cast< const Okular::AnnotationObjectRect * >( annotobj )->annotation() ) )
{
setCursor( Qt::OpenHandCursor );
}
else
{
setCursor( Qt::ArrowCursor );
}
}
}
}
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 );
}
}
int PageView::viewColumns() const
{
int nr = Okular::Settings::viewMode();
if (nr<2)
return nr+1;
return Okular::Settings::viewColumns();
}
int PageView::viewRows() const
{
if ( Okular::Settings::viewMode() < 2 )
return 1;
return Okular::Settings::viewRows();
}
void PageView::center(int cx, int cy)
{
horizontalScrollBar()->setValue(cx - viewport()->width() / 2);
verticalScrollBar()->setValue(cy - viewport()->height() / 2);
}
void PageView::toggleFormWidgets( bool on )
{
bool somehadfocus = false;
QVector< PageViewItem * >::const_iterator dIt = d->items.begin(), dEnd = d->items.end();
for ( ; dIt != dEnd; ++dIt )
{
bool hadfocus = (*dIt)->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" ) );
}
}
}
//BEGIN private SLOTS
void PageView::slotRelayoutPages()
// called by: notifySetup, viewportResizeEvent, slotViewMode, slotContinuousToggled, updateZoom
{
// set an empty container if we have no pages
int pageCount = d->items.count();
if ( pageCount < 1 )
{
setWidgetResizable(true);
return;
}
// if viewport was auto-moving, stop it
if ( d->viewportMoveActive )
{
d->viewportMoveActive = false;
d->viewportMoveTimer->stop();
verticalScrollBar()->setEnabled( true );
horizontalScrollBar()->setEnabled( true );
}
// common iterator used in this method and viewport parameters
QVector< PageViewItem * >::const_iterator iIt, iEnd = d->items.end();
int viewportWidth = viewport()->width(),
viewportHeight = viewport()->height(),
fullWidth = 0,
fullHeight = 0;
QRect viewportRect( horizontalScrollBar()->value(), verticalScrollBar()->value(), viewportWidth, viewportHeight );
// handle the 'center first page in row' stuff
int nCols = viewColumns();
bool centerFirstPage = Okular::Settings::centerFirstPageInRow() && nCols > 1;
// set all items geometry and resize contents. handle 'continuous' and 'single' modes separately
if ( Okular::Settings::viewContinuous() )
{
// handle the 'centering on first row' stuff
if ( centerFirstPage )
pageCount += nCols - 1;
// Here we find out column's width and row's height to compute a table
// so we can place widgets 'centered in virtual cells'.
int nRows;
// if ( Okular::Settings::viewMode() < 2 )
nRows = (int)ceil( (float)pageCount / (float)nCols );
// nRows=(int)ceil( (float)pageCount / (float) Okular::Settings::viewRows() );
// else
// nRows = Okular::Settings::viewRows();
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 )
pageCount -= 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 ( iIt = d->items.begin(); iIt != iEnd; ++iIt )
{
PageViewItem * item = *iIt;
// update internal page size (leaving a little margin in case of Fit* modes)
updateItemSize( item, colWidth[ cIdx ] - 6, viewportHeight - 12 );
// find row's maximum height and column's max width
if ( item->width() + 6 > colWidth[ cIdx ] )
colWidth[ cIdx ] = item->width() + 6;
if ( item->height() + 12 > rowHeight[ rIdx ] )
rowHeight[ rIdx ] = item->height() + 12;
// handle the 'centering on first row' stuff
if ( centerFirstPage && !item->pageNumber() )
cIdx += nCols - 1;
// update col/row indices
if ( ++cIdx == nCols )
{
cIdx = 0;
rIdx++;
}
}
// 2) compute full size
for ( int i = 0; i < nCols; i++ )
fullWidth += colWidth[ i ];
for ( int i = 0; i < nRows; i++ )
fullHeight += rowHeight[ i ];
// 3) arrange widgets inside cells (and refine fullHeight if needed)
int insertX = 0,
insertY = fullHeight < viewportHeight ? ( viewportHeight - fullHeight ) / 2 : 0;
cIdx = 0;
rIdx = 0;
for ( iIt = d->items.begin(); iIt != iEnd; ++iIt )
{
PageViewItem * item = *iIt;
int cWidth = colWidth[ cIdx ],
rHeight = rowHeight[ rIdx ];
if ( centerFirstPage && !rIdx && !cIdx )
{
// handle the 'centering on first row' stuff
item->moveTo( insertX + (fullWidth - item->width()) / 2,
insertY + (rHeight - item->height()) / 2 );
cIdx += nCols - 1;
}
else
{
// center widget inside 'cells'
item->moveTo( insertX + (cWidth - item->width()) / 2,
insertY + (rHeight - item->height()) / 2 );
}
// 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() << "to" << item->geometry();
#endif
}
delete [] colWidth;
delete [] rowHeight;
}
else // viewContinuous is FALSE
{
PageViewItem * currentItem = d->items[ qMax( 0, (int)d->document->currentPage() ) ];
int nRows=viewRows();
// handle the 'centering on first row' stuff
if ( centerFirstPage && d->document->currentPage() < 1 && Okular::Settings::viewMode() == 1 )
nCols = 1, nRows=1;
// setup varialbles for a M(row) x N(columns) grid
int * colWidth = new int[ nCols ],
cIdx = 0;
int * rowHeight = new int[ nRows ],
rIdx = 0;
for ( int i = 0; i < nCols; i++ )
colWidth[ i ] = viewportWidth / nCols;
for ( int i = 0; i < nRows; i++ )
rowHeight[ i ] = viewportHeight / nRows;
// 1) find out maximum area extension for the pages
bool wasCurrent = false;
for ( iIt = d->items.begin(); iIt != iEnd; ++iIt )
{
PageViewItem * item = *iIt;
if ( rIdx >= 0 && rIdx < nRows )
{
if ( item == currentItem )
wasCurrent=true;
if ( wasCurrent && cIdx >= 0 && cIdx < nCols )
{
// update internal page size (leaving a little margin in case of Fit* modes)
updateItemSize( item, colWidth[ cIdx ] - 6, rowHeight[ rIdx ] - 12 );
// find row's maximum height and column's max width
if ( item->width() + 6 > colWidth[ cIdx ] )
colWidth[ cIdx ] = item->width() + 6;
if ( item->height() + 12 > rowHeight[ rIdx ] )
rowHeight[ rIdx ] = item->height() + 12;
cIdx++;
}
if( cIdx>=nCols )
{
rIdx++;
cIdx=0;
}
}
}
// 2) calc full size (fullHeight is alredy ok)
for ( int i = 0; i < nCols; i++ )
fullWidth += colWidth[ i ];
for ( int i = 0; i < nRows; i++ )
fullHeight += rowHeight[ i ];
// 3) hide all widgets except the displayable ones and dispose those
int insertX = 0;
int insertY = 0;
cIdx = 0;
rIdx = 0;
wasCurrent=false;
for ( iIt = d->items.begin(); iIt != iEnd; ++iIt )
{
PageViewItem * item = *iIt;
if ( rIdx >= 0 && rIdx < nRows )
{
if ( item == currentItem )
wasCurrent=true;
if ( wasCurrent && cIdx >= 0 && cIdx < nCols )
{
// center widget inside 'cells'
item->moveTo( insertX + (colWidth[ cIdx ] - item->width()) / 2,
insertY + ( rowHeight[ rIdx ] - item->height() ) / 2 );
// advance col index
insertX += colWidth[ cIdx ];
cIdx++;
} else
// pino: I used invalidate() instead of setGeometry() so
// the geometry rect of the item is really invalidated
//item->setGeometry( 0, 0, -1, -1 );
item->invalidate();
if( cIdx>=nCols)
{
insertY += rowHeight[ rIdx ];
rIdx++;
insertX = 0;
cIdx=0;
}
}
else
// pino: I used invalidate() instead of setGeometry() so
// the geometry rect of the item is really invalidated
//item->setGeometry( 0, 0, -1, -1 );
item->invalidate();
}
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 != widget()->width() || fullHeight != widget()->height() )
{
// disable updates and resize the viewportContents
if ( wasUpdatesEnabled )
viewport()->setUpdatesEnabled( false );
setWidgetResizable(false);
fullWidth = qMax(fullWidth, viewport()->width());
fullHeight = qMax(fullHeight, viewport()->height());
widget()->resize( fullWidth, fullHeight );
// restore previous viewport if defined and updates enabled
if ( wasUpdatesEnabled )
{
const Okular::DocumentViewport & vp = d->document->viewport();
if ( vp.pageNumber >= 0 )
{
int prevX = horizontalScrollBar()->value(),
prevY = verticalScrollBar()->value();
const QRect & geometry = d->items[ vp.pageNumber ]->geometry();
double nX = vp.rePos.enabled ? vp.rePos.normalizedX : 0.5,
nY = vp.rePos.enabled ? vp.rePos.normalizedY : 0.0;
center( geometry.left() + qRound( nX * (double)geometry.width() ),
geometry.top() + qRound( nY * (double)geometry.height() ) );
// 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 )
widget()->update();
}
void PageView::slotRequestVisiblePixmaps()
{
// if requests are blocked (because raised by an unwanted event), exit
if ( d->blockPixmapsRequest || d->viewportMoveActive ||
d->mouseMidZooming )
return;
// precalc view limits for intersecting with page coords inside the lOOp
bool isEvent = !d->blockViewport;
QRect viewportRect( horizontalScrollBar()->value(),
verticalScrollBar()->value(),
viewport()->width(), viewport()->height() );
// some variables used to determine the viewport
int nearPageNumber = -1;
double viewportCenterX = (viewportRect.left() + viewportRect.right()) / 2.0,
viewportCenterY = (viewportRect.top() + viewportRect.bottom()) / 2.0,
focusedX = 0.5,
focusedY = 0.0,
minDistance = -1.0;
// iterate over all items
d->visibleItems.clear();
QLinkedList< Okular::PixmapRequest * > requestedPixmaps;
QVector< Okular::VisiblePageRect * > visibleRects;
QVector< PageViewItem * >::const_iterator iIt = d->items.begin(), iEnd = d->items.end();
for ( ; iIt != iEnd; ++iIt )
{
PageViewItem * i = *iIt;
#ifdef PAGEVIEW_DEBUG
kWarning() << "checking page" << i->pageNumber();
kWarning().nospace() << "viewportRect is " << viewportRect << ", page item is " << i->geometry() << " intersect : " << viewportRect.intersects( i->geometry() );
#endif
// if the item doesn't intersect the viewport, skip it
QRect intersectionRect = viewportRect.intersect( i->geometry() );
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->geometry().topLeft() ), i->geometry().width(), i->geometry().height() ) );
visibleRects.push_back( vItem );
#ifdef PAGEVIEW_DEBUG
kWarning() << "checking for pixmap for page" << i->pageNumber() << "=" << i->page()->hasPixmap( PAGEVIEW_ID, i->width(), i->height() );
kWarning() << "checking for text for page" << i->pageNumber() << "=" << i->page()->hasTextPage();
#endif
// if the item has not the right pixmap, add a request for it
if ( !i->page()->hasPixmap( PAGEVIEW_ID, i->width(), i->height() ) )
{
#ifdef PAGEVIEW_DEBUG
kWarning() << "rerequesting visible pixmaps for page" << i->pageNumber() << "!";
#endif
Okular::PixmapRequest * p = new Okular::PixmapRequest(
PAGEVIEW_ID, i->pageNumber(), i->width(), i->height(), PAGEVIEW_PRIO, true );
requestedPixmaps.push_back( p );
}
// 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->geometry();
// 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::Settings::memoryLevel() != Okular::Settings::EnumMemoryLevel::Low &&
Okular::Settings::enableThreading() )
{
// as the requests are done in the order as they appear in the list,
// request first the next page and then the previous
// add the page after the 'visible series' in preload
int tailRequest = d->visibleItems.last()->pageNumber() + 1;
if ( tailRequest < (int)d->items.count() )
{
PageViewItem * i = d->items[ tailRequest ];
// request the pixmap if not already present
if ( !i->page()->hasPixmap( PAGEVIEW_ID, i->width(), i->height() ) && i->width() > 0 )
requestedPixmaps.push_back( new Okular::PixmapRequest(
PAGEVIEW_ID, i->pageNumber(), i->width(), i->height(), PAGEVIEW_PRELOAD_PRIO, true ) );
}
// add the page before the 'visible series' in preload
int headRequest = d->visibleItems.first()->pageNumber() - 1;
if ( headRequest >= 0 )
{
PageViewItem * i = d->items[ headRequest ];
// request the pixmap if not already present
if ( !i->page()->hasPixmap( PAGEVIEW_ID, i->width(), i->height() ) && i->width() > 0 )
requestedPixmaps.push_back( new Okular::PixmapRequest(
PAGEVIEW_ID, i->pageNumber(), i->width(), i->height(), PAGEVIEW_PRELOAD_PRIO, true ) );
}
}
// 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 , PAGEVIEW_ID);
}
d->document->setVisiblePageRects( visibleRects, PAGEVIEW_ID );
}
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::slotAutoScoll()
{
// the first time create the timer
if ( !d->autoScrollTimer )
{
d->autoScrollTimer = new QTimer( this );
d->autoScrollTimer->setSingleShot( true );
connect( d->autoScrollTimer, SIGNAL( timeout() ), this, SLOT( slotAutoScoll() ) );
}
// 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()
{
horizontalScrollBar()->setValue(horizontalScrollBar()->value() + d->dragScrollVector.x());
verticalScrollBar()->setValue(verticalScrollBar()->value() + d->dragScrollVector.y());
QPoint p = widget()->mapFromGlobal( QCursor::pos() );
selectionEndPoint( p );
}
void PageView::slotShowWelcome()
{
// show initial welcome text
d->messageWindow->display( i18n( "Welcome" ), PageViewMessage::Info, 2000 );
}
void PageView::slotZoom()
{
setFocus();
updateZoom( ZoomFixed );
}
void PageView::slotZoomIn()
{
updateZoom( ZoomIn );
}
void PageView::slotZoomOut()
{
updateZoom( ZoomOut );
}
void PageView::slotFitToWidthToggled( bool on )
{
if ( on ) updateZoom( ZoomFitWidth );
}
void PageView::slotFitToPageToggled( bool on )
{
if ( on ) updateZoom( ZoomFitPage );
}
void PageView::slotFitToTextToggled( bool on )
{
if ( on ) updateZoom( ZoomFitText );
}
void PageView::slotViewMode( int nr )
{
if ( (int)Okular::Settings::viewMode() != nr )
{
Okular::Settings::setViewMode( nr );
Okular::Settings::self()->writeConfig();
if ( d->document->pages() > 0 )
slotRelayoutPages();
}
}
void PageView::slotContinuousToggled( bool on )
{
if ( Okular::Settings::viewContinuous() != on )
{
Okular::Settings::setViewContinuous( on );
Okular::Settings::self()->writeConfig();
if ( d->document->pages() > 0 )
slotRelayoutPages();
}
}
void PageView::slotSetMouseNormal()
{
d->mouseMode = MouseNormal;
// hide the messageWindow
d->messageWindow->hide();
// reshow the annotator toolbar if hiding was forced
if ( d->aToggleAnnotator->isChecked() )
slotToggleAnnotator( true );
// force an update of the cursor
updateCursor( widget()->mapFromGlobal( QCursor::pos() ) );
}
void PageView::slotSetMouseZoom()
{
d->mouseMode = MouseZoom;
// change the text in messageWindow (and show it if hidden)
d->messageWindow->display( i18n( "Select zooming area. Right-click to zoom out." ), PageViewMessage::Info, -1 );
// force hiding of annotator toolbar
if ( d->annotator )
d->annotator->setEnabled( false );
// force an update of the cursor
updateCursor( widget()->mapFromGlobal( QCursor::pos() ) );
}
void PageView::slotSetMouseSelect()
{
d->mouseMode = MouseSelect;
// change the text in messageWindow (and show it if hidden)
d->messageWindow->display( i18n( "Draw a rectangle around the text/graphics to copy." ), PageViewMessage::Info, -1 );
// force hiding of annotator toolbar
if ( d->annotator )
d->annotator->setEnabled( false );
// force an update of the cursor
updateCursor( widget()->mapFromGlobal( QCursor::pos() ) );
}
void PageView::slotSetMouseTextSelect()
{
d->mouseMode = MouseTextSelect;
// change the text in messageWindow (and show it if hidden)
d->messageWindow->display( i18n( "Select text." ), PageViewMessage::Info, -1 );
// force hiding of annotator toolbar
if ( d->annotator )
d->annotator->setEnabled( false );
// force an update of the cursor
updateCursor( widget()->mapFromGlobal( QCursor::pos() ) );
}
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 != MouseNormal )
d->aMouseNormal->trigger();
// 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 );
inHere = false;
}
void PageView::slotScrollUp()
{
if ( d->scrollIncrement < -9 )
return;
d->scrollIncrement--;
slotAutoScoll();
setFocus();
}
void PageView::slotScrollDown()
{
if ( d->scrollIncrement > 9 )
return;
d->scrollIncrement++;
slotAutoScoll();
setFocus();
}
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 ) );
}
void PageView::slotToggleForms()
{
toggleFormWidgets( !d->m_formsVisible );
}
void PageView::slotFormWidgetChanged( FormWidgetIface *w )
{
}
//END private SLOTS
#include "pageview.moc"
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