mirror of
https://invent.kde.org/graphics/okular
synced 2024-09-20 00:11:19 +00:00
795 lines
25 KiB
C++
795 lines
25 KiB
C++
/***************************************************************************
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* Copyright (C) 2004 by Enrico Ros <eros.kde@email.it> *
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* Copyright (C) 2004 by Albert Astals Cid <tsdgeos@terra.es> *
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* *
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* With portions of code from kpdf_pagewidget.cc by: *
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* Copyright (C) 2002 by Wilco Greven <greven@kde.org> *
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* Copyright (C) 2003 by Christophe Devriese *
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* <Christophe.Devriese@student.kuleuven.ac.be> *
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* Copyright (C) 2003 by Laurent Montel <montel@kde.org> *
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* Copyright (C) 2003 by Dirk Mueller <mueller@kde.org> *
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* Copyright (C) 2004 by James Ots <kde@jamesots.com> *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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***************************************************************************/
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#include <qcursor.h>
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#include <qpainter.h>
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#include <qtimer.h>
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#include <qpushbutton.h>
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#include <kiconloader.h>
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#include <kurldrag.h>
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#include <kaction.h>
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#include <kactioncollection.h>
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#include <kpopupmenu.h>
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#include <klocale.h>
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#include <kconfigbase.h>
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#include <math.h>
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#include "pageview.h"
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#include "pixmapwidget.h"
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#include "page.h"
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// structure used internally by PageView for data storage
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class PageViewPrivate
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{
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public:
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// the document, current page and pages indices vector
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KPDFDocument * document;
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PageWidget * page; //equal to pages[vectorIndex]
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QValueVector< PageWidget * > pages;
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int vectorIndex;
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// view layout, zoom and mouse
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int viewColumns;
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bool viewContinous;
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PageView::ZoomMode zoomMode;
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float zoomFactor;
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PageView::MouseMode mouseMode;
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QPoint mouseGrabPos;
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QPoint mouseStartPos;
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bool mouseOnLink;
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// other stuff
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QTimer *delayTimer;
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bool dirty;
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// actions
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KSelectAction *aZoom;
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KToggleAction *aZoomFitWidth;
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KToggleAction *aZoomFitPage;
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KToggleAction *aZoomFitText;
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KToggleAction *aViewTwoPages;
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KToggleAction *aViewContinous;
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};
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/*
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* PageView class
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*/
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PageView::PageView( QWidget *parent, KPDFDocument *document )
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: QScrollView( parent, "KPDF::pageView", WNoAutoErase | WStaticContents )
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{
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// create and initialize private storage structure
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d = new PageViewPrivate();
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d->document = document;
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d->page = 0;
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d->viewColumns = 1;
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d->viewContinous = false;
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d->zoomMode = ZoomFitWidth;
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d->zoomFactor = 0.999;
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d->mouseMode = MouseNormal;
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d->mouseOnLink = false;
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d->delayTimer = 0;
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d->dirty = false;
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// dealing with (very) large areas so enable clipper
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enableClipper( true );
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// widget setup: setup focus, accept drops and track mouse
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viewport()->setFocusProxy( this );
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viewport()->setFocusPolicy( StrongFocus );
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viewport()->setPaletteBackgroundColor( Qt::gray );
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setResizePolicy( Manual );
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setAcceptDrops( true );
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viewport()->setMouseTracking( true );
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// conntect the padding of the viewport to pixmaps requests
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connect( this, SIGNAL(contentsMoving(int, int)), this, SLOT(slotRequestVisiblePixmaps(int, int)) );
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// set a corner button to resize the view to the page size
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QPushButton * resizeButton = new QPushButton( viewport() );
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resizeButton->setPixmap( SmallIcon("crop") );
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setCornerWidget( resizeButton );
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resizeButton->setEnabled( false );
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// connect(...);
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}
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PageView::~PageView()
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{
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delete d;
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}
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void PageView::setupActions( KActionCollection * ac, KConfigGroup * config )
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{
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// Zoom actions ( higher scales consumes lots of memory! )
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const double zoomValue[10] = { 0.125, 0.25, 0.333, 0.5, 0.667, 0.75, 1, 1.25, 1.50, 2 };
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d->aZoom = new KSelectAction( i18n( "Zoom" ), "viewmag", 0, ac, "zoom_to" );
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connect( d->aZoom, SIGNAL( activated( const QString & ) ), this, SLOT( slotZoom( const QString& ) ) );
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d->aZoom->setEditable( true );
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QStringList translated;
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translated << i18n("Fit Width") << i18n("Fit Page");
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QString localValue;
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QString double_oh( "00" );
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for ( int i = 0; i < 10; i++ )
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{
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localValue = KGlobal::locale()->formatNumber( zoomValue[i] * 100.0, 2 );
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localValue.remove( KGlobal::locale()->decimalSymbol() + double_oh );
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translated << QString( "%1%" ).arg( localValue );
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}
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d->aZoom->setItems( translated );
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d->aZoom->setCurrentItem( 0 ); // 8 for 100%
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KStdAction::zoomIn( this, SLOT( slotZoomIn() ), ac, "zoom_in" );
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KStdAction::zoomOut( this, SLOT( slotZoomOut() ), ac, "zoom_out" );
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d->aZoomFitWidth = new KToggleAction( i18n("Fit to Page &Width"), "viewmagfit", 0, ac, "zoom_fit_width" );
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connect( d->aZoomFitWidth, SIGNAL( toggled( bool ) ), SLOT( slotFitToWidthToggled( bool ) ) );
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d->aZoomFitPage = new KToggleAction( i18n("Fit to &Page"), "viewmagfit", 0, ac, "zoom_fit_page" );
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connect( d->aZoomFitPage, SIGNAL( toggled( bool ) ), SLOT( slotFitToPageToggled( bool ) ) );
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// View-Layout actions
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d->aViewTwoPages = new KToggleAction( i18n("Two Pages"), "view_left_right", 0, ac, "view_twopages" );
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connect( d->aViewTwoPages, SIGNAL( toggled( bool ) ), SLOT( slotTwoPagesToggled( bool ) ) );
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d->aViewTwoPages->setChecked( config->readBoolEntry( "ViewTwoPages", false ) );
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slotTwoPagesToggled( d->aViewTwoPages->isChecked() );
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d->aViewContinous = new KToggleAction( i18n("Continous"), "view_text", 0, ac, "view_continous" );
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connect( d->aViewContinous, SIGNAL( toggled( bool ) ), SLOT( slotContinousToggled( bool ) ) );
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d->aViewContinous->setChecked( config->readBoolEntry( "ViewContinous", true ) );
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slotContinousToggled( d->aViewContinous->isChecked() );
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// Mouse-Mode actions
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KToggleAction * mn = new KToggleAction( i18n("Normal"), "mouse", 0, this, SLOT( slotSetMouseNormal() ), ac, "mouse_drag" );
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mn->setExclusiveGroup("MouseType");
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mn->setChecked( true );
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KToggleAction * ms = new KToggleAction( i18n("Select"), "frame_edit", 0, this, SLOT( slotSetMouseSelect() ), ac, "mouse_select" );
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ms->setExclusiveGroup("MouseType");
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ms->setEnabled( false ); // implement feature before removing this line
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KToggleAction * md = new KToggleAction( i18n("Draw"), "edit", 0, this, SLOT( slotSetMouseDraw() ), ac, "mouse_draw" );
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md->setExclusiveGroup("MouseType");
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md->setEnabled( false ); // implement feature before removing this line
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// Other actions
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KToggleAction * ss = new KToggleAction( i18n( "Show &Scrollbars" ), 0, ac, "show_scrollbars" );
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ss->setCheckedState(i18n("Hide &Scrollbars"));
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connect( ss, SIGNAL( toggled( bool ) ), SLOT( slotToggleScrollBars( bool ) ) );
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ss->setChecked( config->readBoolEntry( "ShowScrollBars", true ) );
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slotToggleScrollBars( ss->isChecked() );
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}
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void PageView::saveSettings( KConfigGroup * config )
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{
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config->writeEntry( "ShowScrollBars", hScrollBarMode() == AlwaysOn );
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config->writeEntry( "ViewTwoPages", d->aViewTwoPages->isChecked() );
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config->writeEntry( "ViewContinous", d->aViewContinous->isChecked() );
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}
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//BEGIN KPDFDocumentObserver inherited methods
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void PageView::pageSetup( const QValueVector<KPDFPage*> & pageSet, bool /*documentChanged*/ )
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{ /* TODO: preserve (reuse) existing pages if !documentChanged */
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// delete all pages
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QValueVector< PageWidget * >::iterator dIt = d->pages.begin(), dEnd = d->pages.end();
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for ( ; dIt != dEnd; ++dIt )
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delete *dIt;
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d->pages.clear();
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d->page = 0;
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// create children widgets
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QValueVector< KPDFPage * >::const_iterator setIt = pageSet.begin(), setEnd = pageSet.end();
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for ( ; setIt != setEnd; ++setIt )
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{
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PageWidget * p = new PageWidget( viewport(), *setIt );
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p->setFocusProxy( this );
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d->pages.push_back( p );
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}
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// invalidate layout
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d->dirty = true;
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}
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void PageView::pageSetCurrent( int pageNumber, float position )
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{
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if ( d->dirty )
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reLayoutPages();
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// select next page
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d->vectorIndex = 0;
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d->page = 0;
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QValueVector< PageWidget * >::iterator pIt = d->pages.begin(), pEnd = d->pages.end();
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for ( ; pIt != pEnd; ++pIt )
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{
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if ( (*pIt)->pageNumber() == pageNumber )
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{
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d->page = *pIt;
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break;
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}
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d->vectorIndex ++;
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}
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if ( d->page )
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{
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int xPos = childX( d->page ) + d->page->widthHint() / 2,
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yPos = childY( d->page ) + (int)((float)d->page->heightHint() * position);
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center( xPos, yPos + visibleHeight() / 2 - 10 );
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slotRequestVisiblePixmaps();
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}
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}
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void PageView::notifyPixmapChanged( int pageNumber )
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{
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QValueVector< PageWidget * >::iterator pIt = d->pages.begin(), pEnd = d->pages.end();
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for ( ; pIt != pEnd; ++pIt )
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if ( (*pIt)->pageNumber() == pageNumber )
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{
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(*pIt)->update();
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break;
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}
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}
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//END KPDFDocumentObserver inherited methods
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//BEGIN widget events
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void PageView::contentsMousePressEvent( QMouseEvent * e )
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{
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switch ( d->mouseMode )
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{
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case MouseNormal: // drag / click start
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if ( e->button() & LeftButton )
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{
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d->mouseGrabPos = e->globalPos();
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d->mouseStartPos = d->mouseGrabPos;
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setCursor( sizeAllCursor );
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}
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else if ( e->button() & RightButton )
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emit rightClick();
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/* TODO Albert
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note: 'Page' is an 'information container' and has to deal with clean
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data (such as the '(int)page & (float)position' where link refers to,
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not a LinkAction struct.. better an own struct). 'Document' is the place
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to put xpdf/Splash dependant stuff and fill up pages with interpreted
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data. I think is a *clean* way to handle everything.
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d->pressedLink = *PAGE* or *DOCUMENT* ->findLink( normalizedX, normY );
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*/
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break;
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case MouseSelection: // ? set 1st corner of the selection rect ?
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case MouseEdit: // ? place the beginning of [tool] ?
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break;
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}
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}
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void PageView::contentsMouseReleaseEvent( QMouseEvent * e )
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{
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PageWidget * page = pickPageOnPoint( e->x(), e->y() );
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switch ( d->mouseMode )
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{
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case MouseNormal: // end drag / follow link
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if ( e->button() & LeftButton )
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{
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setCursor( arrowCursor );
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// check if it was a click, in that case select the page
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if ( e->globalPos() == d->mouseStartPos && page )
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d->document->slotSetCurrentPage( page->pageNumber() );
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}
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else if ( e->button() == Qt::RightButton && page )
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{
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// If over a page display a popup menu
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//FIXME ADD BOOKMARKING STUFF IN DOCUMENT !!!!!!!!!
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KPDFPage * kpdfPage = (KPDFPage *)d->document->page( page->pageNumber() );
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KPopupMenu * m_popup = new KPopupMenu( this, "rmb popup" );
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m_popup->insertTitle( i18n( "Page %1" ).arg( page->pageNumber() ) );
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if ( kpdfPage->isBookmarked() )
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m_popup->insertItem( SmallIcon("bookmark"), i18n("Remove Bookmark"), 1 );
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else
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m_popup->insertItem( SmallIcon("bookmark"), i18n("Add Bookmark"), 1 );
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m_popup->insertItem( SmallIcon("viewmagfit"), i18n("Fit Page"), 2 );
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m_popup->insertItem( SmallIcon("pencil"), i18n("Edit"), 3 );
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switch ( m_popup->exec(QCursor::pos()) )
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{
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case 1:
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kpdfPage->bookmark( !kpdfPage->isBookmarked() );
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break;
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case 2:
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slotTwoPagesToggled( false );
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slotFitToWidthToggled( true );
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d->document->slotSetCurrentPage( page->pageNumber() );
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break;
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case 3:
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//TODO switch to edit
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break;
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}
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}
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/* TODO Albert
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PageLink * link = *PAGE* ->findLink(e->x()/m_ppp, e->y()/m_ppp);
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if ( link == d->pressedLink )
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//go to link, use:
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document->slotSetCurrentPagePosition( (int)link->page(), (float)link->position() );
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//and all the views will update and display the right page at the right position
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d->pressedLink = 0;
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*/
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break;
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case MouseSelection: // ? d->page->setPixmapOverlaySelection( QRect ) ?
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case MouseEdit: // ? apply [tool] ?
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break;
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}
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}
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void PageView::contentsMouseMoveEvent( QMouseEvent * e )
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{
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switch ( d->mouseMode )
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{
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case MouseNormal: // move page / change mouse cursor if over links
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if ( e->state() & LeftButton )
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{
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QPoint delta = d->mouseGrabPos - e->globalPos();
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scrollBy( delta.x(), delta.y() );
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d->mouseGrabPos = e->globalPos();
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}
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/* TODO Albert
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LinkAction* action = *PAGE* ->findLink(e->x()/m_ppp, e->y()/m_ppp);
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setCursor(action != 0 ? );
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experimental version using Page->hasLink( int pageX, int pageY )
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and haslink has a fake true response on
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*/
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// EROS FIXME find right page for query
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/*if ( d->page && e->state() == NoButton && )
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{
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bool onLink = d->page->hasLink( e->x() - d->pageRect.left(), e->y() - d->pageRect.top() );
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// set cursor only when entering / leaving (setCursor has not an internal cache)
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if ( onLink != d->mouseOnLink )
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{
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d->mouseOnLink = onLink;
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setCursor( onLink ? pointingHandCursor : arrowCursor );
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}
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}
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*/
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break;
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case MouseSelection: // ? update selection contour ?
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case MouseEdit: // ? update graphics ?
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break;
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}
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}
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void PageView::viewportResizeEvent( QResizeEvent * )
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{
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// start a timer that will refresh the pixmap after 0.5s
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if ( !d->delayTimer )
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{
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d->delayTimer = new QTimer( this );
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connect( d->delayTimer, SIGNAL( timeout() ), this, SLOT( slotUpdateView() ) );
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}
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d->delayTimer->start( 400, true );
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}
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void PageView::keyPressEvent( QKeyEvent * e )
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{
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switch ( e->key() )
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{
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case Key_Up:
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if ( atTop() )
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scrollUp();
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else
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verticalScrollBar()->subtractLine();
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break;
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case Key_Down:
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if ( atBottom() )
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scrollDown();
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else
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verticalScrollBar()->addLine();
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break;
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case Key_Left:
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horizontalScrollBar()->subtractLine();
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break;
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case Key_Right:
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horizontalScrollBar()->addLine();
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break;
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case Key_PageUp:
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verticalScrollBar()->subtractPage();
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break;
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case Key_PageDown:
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verticalScrollBar()->addPage();
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break;
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default:
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e->ignore();
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return;
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}
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e->accept();
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}
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void PageView::wheelEvent( QWheelEvent *e )
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{
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int delta = e->delta();
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e->accept();
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if ( (e->state() & ControlButton) == ControlButton ) {
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if ( e->delta() > 0 )
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slotZoomOut();
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else
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slotZoomIn();
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}
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else if ( delta <= -120 && atBottom() && !d->viewContinous )
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scrollDown();
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else if ( delta >= 120 && atTop() && !d->viewContinous )
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scrollUp();
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else
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QScrollView::wheelEvent( e );
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}
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void PageView::dragEnterEvent( QDragEnterEvent * ev )
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{
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ev->accept();
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}
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void PageView::dropEvent( QDropEvent * ev )
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{
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KURL::List lst;
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if ( KURLDrag::decode( ev, lst ) )
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emit urlDropped( lst.first() );
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}
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//END widget events
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//BEGIN internal SLOTS
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void PageView::slotZoom( const QString & nz )
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{
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if ( nz == i18n("Fit Width") )
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{
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d->aZoomFitWidth->setChecked( true );
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return slotFitToWidthToggled( true );
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}
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if ( nz == i18n("Fit Page") )
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{
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d->aZoomFitPage->setChecked( true );
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return slotFitToPageToggled( true );
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}
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QString z = nz;
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z.remove( z.find( '%' ), 1 );
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bool isNumber = true;
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double zoom = KGlobal::locale()->readNumber( z, &isNumber ) / 100;
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if ( d->zoomFactor != zoom && zoom > 0.1 && zoom < 8.0 )
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{
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d->zoomMode = ZoomFixed;
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d->zoomFactor = zoom;
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slotUpdateView();
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d->aZoomFitWidth->setChecked( false );
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d->aZoomFitPage->setChecked( false );
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}
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}
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void PageView::slotZoomIn()
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{
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if ( d->zoomFactor >= 4.0 )
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return;
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d->zoomFactor += 0.1;
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if ( d->zoomFactor >= 4.0 )
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d->zoomFactor = 4.0;
|
|
|
|
d->zoomMode = ZoomFixed;
|
|
slotUpdateView();
|
|
d->aZoomFitWidth->setChecked( false );
|
|
d->aZoomFitPage->setChecked( false );
|
|
}
|
|
|
|
void PageView::slotZoomOut()
|
|
{
|
|
if ( d->zoomFactor <= 0.125 )
|
|
return;
|
|
d->zoomFactor -= 0.1;
|
|
if ( d->zoomFactor <= 0.125 )
|
|
d->zoomFactor = 0.125;
|
|
|
|
d->zoomMode = ZoomFixed;
|
|
slotUpdateView();
|
|
d->aZoomFitWidth->setChecked( false );
|
|
d->aZoomFitPage->setChecked( false );
|
|
}
|
|
|
|
void PageView::slotFitToWidthToggled( bool on )
|
|
{
|
|
d->zoomMode = on ? ZoomFitWidth : ZoomFixed;
|
|
slotUpdateView();
|
|
d->aZoomFitPage->setChecked( false );
|
|
//FIXME uncheck others (such as FitToText)
|
|
}
|
|
|
|
void PageView::slotFitToPageToggled( bool on )
|
|
{
|
|
ZoomMode newZoomMode = on ? ZoomFitText : ZoomFixed;
|
|
if ( newZoomMode != d->zoomMode )
|
|
{
|
|
d->zoomMode = newZoomMode;
|
|
slotUpdateView();
|
|
d->aZoomFitWidth->setChecked( false );
|
|
}
|
|
}
|
|
|
|
void PageView::slotFitToTextToggled( bool on )
|
|
{
|
|
ZoomMode newZoomMode = on ? ZoomFitText : ZoomFixed;
|
|
if ( newZoomMode != d->zoomMode )
|
|
{
|
|
d->zoomMode = newZoomMode;
|
|
slotUpdateView();
|
|
d->aZoomFitWidth->setChecked( false );
|
|
}
|
|
}
|
|
|
|
void PageView::slotTwoPagesToggled( bool on )
|
|
{
|
|
int newColumns = on ? 2 : 1;
|
|
if ( d->viewColumns != newColumns )
|
|
{
|
|
d->viewColumns = newColumns;
|
|
reLayoutPages();
|
|
}
|
|
}
|
|
|
|
void PageView::slotContinousToggled( bool on )
|
|
{
|
|
if ( d->viewContinous != on )
|
|
{
|
|
d->viewContinous = on;
|
|
reLayoutPages();
|
|
}
|
|
}
|
|
|
|
void PageView::slotSetMouseNormal()
|
|
{
|
|
d->mouseMode = MouseNormal;
|
|
}
|
|
|
|
void PageView::slotSetMouseSelect()
|
|
{
|
|
d->mouseMode = MouseSelection;
|
|
}
|
|
|
|
void PageView::slotSetMouseDraw()
|
|
{
|
|
d->mouseMode = MouseEdit;
|
|
}
|
|
|
|
void PageView::slotToggleScrollBars( bool on )
|
|
{
|
|
setHScrollBarMode( on ? AlwaysOn : AlwaysOff );
|
|
setVScrollBarMode( on ? AlwaysOn : AlwaysOff );
|
|
}
|
|
|
|
void PageView::slotUpdateView( bool /*repaint*/ )
|
|
{ //TODO ASYNC autogeneration!
|
|
reLayoutPages();
|
|
}
|
|
|
|
void PageView::slotRequestVisiblePixmaps( int newLeft, int newTop )
|
|
{
|
|
// // if an update is already scheduled or the widget is hidden, don't proceed
|
|
// if ( (m_delayTimer && m_delayTimer->isActive()) || !isShown() )
|
|
// return;
|
|
|
|
// precalc view limits for intersecting with page coords inside the lOOp
|
|
int vLeft = (newLeft == -1) ? contentsX() : newLeft,
|
|
vRight = vLeft + visibleWidth(),
|
|
vTop = (newTop == -1) ? contentsY() : newTop,
|
|
vBottom = vTop + visibleHeight();
|
|
|
|
// scroll from the top to the last visible thumbnail
|
|
QValueVector< PageWidget * >::iterator pIt = d->pages.begin(), pEnd = d->pages.end();
|
|
for ( ; pIt != pEnd; ++pIt )
|
|
{
|
|
PageWidget * p = *pIt;
|
|
int pLeft = childX( p ),
|
|
pRight = pLeft + p->widthHint(),
|
|
pTop = childY( p ),
|
|
pBottom = pTop + p->heightHint();
|
|
if ( p->isShown() && pRight > vLeft && pLeft < vRight && pBottom > vTop && pTop < vBottom )
|
|
d->document->requestPixmap( PAGEVIEW_ID, p->pageNumber(), p->pixmapWidth(), p->pixmapHeight(), true );
|
|
}
|
|
}
|
|
//END internal SLOTS
|
|
|
|
void PageView::reLayoutPages()
|
|
{
|
|
// set an empty container if we have no pages
|
|
int pageCount = d->pages.count();
|
|
if ( pageCount < 1 )
|
|
{
|
|
resizeContents( 0,0 );
|
|
return;
|
|
}
|
|
|
|
int viewportWidth = clipper()->width(),
|
|
viewportHeight = clipper()->height();
|
|
|
|
if ( d->viewContinous == TRUE )
|
|
{
|
|
// 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 nCols = d->viewColumns,
|
|
nRows = (int)ceilf( (float)pageCount / (float)nCols ),
|
|
* 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;
|
|
|
|
// 1) find the maximum columns width and rows height for a grid in
|
|
// which each page must well-fit inside a cell
|
|
QValueVector< PageWidget * >::iterator pIt = d->pages.begin(), pEnd = d->pages.end();
|
|
for ( ; pIt != pEnd; ++pIt )
|
|
{
|
|
PageWidget * p = *pIt;
|
|
// update internal page geometry
|
|
if ( d->zoomMode == ZoomFixed )
|
|
p->setZoomFixed( d->zoomFactor );
|
|
else if ( d->zoomMode == ZoomFitWidth )
|
|
p->setZoomFitWidth( colWidth[ cIdx ] - 10 );
|
|
else
|
|
p->setZoomFitRect( colWidth[ cIdx ] - 10, viewportHeight - 10 );
|
|
// find row's maximum height and column's max width
|
|
int pWidth = p->widthHint(),
|
|
pHeight = p->heightHint();
|
|
if ( pWidth > colWidth[ cIdx ] )
|
|
colWidth[ cIdx ] = pWidth;
|
|
if ( pHeight > rowHeight[ rIdx ] )
|
|
rowHeight[ rIdx ] = pHeight;
|
|
// update col/row indices
|
|
if ( ++cIdx == nCols )
|
|
{
|
|
cIdx = 0;
|
|
rIdx++;
|
|
}
|
|
}
|
|
|
|
// 2) arrange widgets inside cells
|
|
int insertX = 0,
|
|
insertY = (int)(5.0 + 10.0 * d->zoomFactor);
|
|
cIdx = 0;
|
|
rIdx = 0;
|
|
for ( pIt = d->pages.begin(); pIt != pEnd; ++pIt )
|
|
{
|
|
PageWidget * p = *pIt;
|
|
int pWidth = p->widthHint(),
|
|
pHeight = p->heightHint(),
|
|
cWidth = colWidth[ cIdx ],
|
|
rHeight = rowHeight[ rIdx ];
|
|
// show, resize and center widget inside 'cells'
|
|
p->resize( pWidth, pHeight );
|
|
moveChild( p, insertX + (cWidth - pWidth) / 2,
|
|
insertY + (rHeight - pHeight) / 2 );
|
|
p->show();
|
|
// advance col/row index
|
|
insertX += cWidth;
|
|
if ( ++cIdx == nCols )
|
|
{
|
|
cIdx = 0;
|
|
rIdx++;
|
|
insertX = 0;
|
|
insertY += rHeight + (int)(5.0 + 15.0 * d->zoomFactor);
|
|
}
|
|
}
|
|
|
|
// 3) update scrollview's contents size and recenter view
|
|
int fullWidth = 0,
|
|
fullHeight = cIdx ? (insertY + rowHeight[ rIdx ] + 10) : insertY,
|
|
oldWidth = contentsWidth(),
|
|
oldHeight = contentsHeight();
|
|
for ( int i = 0; i < nCols; i++ )
|
|
fullWidth += colWidth[ i ];
|
|
resizeContents( fullWidth, fullHeight );
|
|
if ( oldWidth > 0 && oldHeight > 0 )
|
|
center( fullWidth * (contentsX() + visibleWidth() / 2) / oldWidth,
|
|
fullHeight * (contentsY() + visibleHeight() / 2) / oldHeight );
|
|
else
|
|
center( fullWidth / 2, 0 );
|
|
|
|
delete [] colWidth;
|
|
delete [] rowHeight;
|
|
}
|
|
else // viewContinous is FALSE
|
|
{
|
|
// hide all widgets except the displayable ones
|
|
QValueVector< PageWidget * >::iterator dIt = d->pages.begin(), dEnd = d->pages.end();
|
|
for ( ; dIt != dEnd; ++dIt )
|
|
(*dIt)->hide();
|
|
//
|
|
resizeContents( viewportWidth, viewportHeight );
|
|
}
|
|
|
|
// reset dirty state
|
|
d->dirty = false;
|
|
}
|
|
|
|
PageWidget * PageView::pickPageOnPoint( int x, int y )
|
|
{
|
|
PageWidget * page = 0;
|
|
QValueVector< PageWidget * >::iterator pIt = d->pages.begin(), pEnd = d->pages.end();
|
|
for ( ; pIt != pEnd; ++pIt )
|
|
{
|
|
PageWidget * p = *pIt;
|
|
int pLeft = childX( p ),
|
|
pRight = pLeft + p->widthHint(),
|
|
pTop = childY( p ),
|
|
pBottom = pTop + p->heightHint();
|
|
// little optimized, stops if found or probably quits on the next row
|
|
if ( x > pLeft && x < pRight && y < pBottom )
|
|
{
|
|
if ( y > pTop )
|
|
page = p;
|
|
break;
|
|
}
|
|
}
|
|
return page;
|
|
}
|
|
|
|
bool PageView::atTop() const
|
|
{
|
|
return verticalScrollBar()->value() == verticalScrollBar()->minValue();
|
|
}
|
|
|
|
bool PageView::atBottom() const
|
|
{
|
|
return verticalScrollBar()->value() == verticalScrollBar()->maxValue();
|
|
}
|
|
|
|
void PageView::scrollUp()
|
|
{
|
|
if( atTop() && d->vectorIndex > 0 )
|
|
// go to the bottom of previous page
|
|
d->document->slotSetCurrentPagePosition( d->pages[ d->vectorIndex - 1 ]->pageNumber(), 1.0 );
|
|
else
|
|
{ // go towards the top of current page
|
|
int newValue = QMAX( verticalScrollBar()->value() - height() + 50,
|
|
verticalScrollBar()->minValue() );
|
|
verticalScrollBar()->setValue( newValue );
|
|
}
|
|
}
|
|
|
|
void PageView::scrollDown()
|
|
{
|
|
if( atBottom() && d->vectorIndex < (int)d->pages.count() - 1 )
|
|
// go to the top of previous page
|
|
d->document->slotSetCurrentPagePosition( d->pages[ d->vectorIndex + 1 ]->pageNumber(), 0.0 );
|
|
else
|
|
{ // go towards the bottom of current page
|
|
int newValue = QMIN( verticalScrollBar()->value() + height() - 50,
|
|
verticalScrollBar()->maxValue() );
|
|
verticalScrollBar()->setValue( newValue );
|
|
}
|
|
}
|
|
|
|
#include "pageview.moc"
|