mirror of
https://invent.kde.org/graphics/okular
synced 2024-09-13 05:01:30 +00:00
WheelMouse works as in kghostview
svn path=/trunk/kdegraphics/kpdf/; revision=251103
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5e89aedf16
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0ff129b678
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@ -181,6 +181,40 @@ namespace KPDF
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}
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e->accept();
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}
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bool PageWidget::atTop() const
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{
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return verticalScrollBar()->value() == verticalScrollBar()->minValue();
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}
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bool PageWidget::atBottom() const
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{
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return verticalScrollBar()->value() == verticalScrollBar()->maxValue();
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}
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void PageWidget::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() & ShiftButton) == ShiftButton) {
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if ( e->delta() > 0 )
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emit ZoomOut();
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else
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emit ZoomIn();
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}
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else if ( delta <= -120 && atBottom() )
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{
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emit ReadDown();
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}
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else if ( delta >= 120 && atTop())
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{
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emit ReadUp();
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}
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else
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QScrollView::wheelEvent( e );
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}
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void PageWidget::updatePixmap()
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{
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if ( m_doc )
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@ -200,6 +234,50 @@ namespace KPDF
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viewport()->update();
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}
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}
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bool PageWidget::readUp()
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{
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if( atTop() )
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return false;
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else {
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int newValue = QMAX( verticalScrollBar()->value() - height() + 50,
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verticalScrollBar()->minValue() );
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/*
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int step = 10;
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int value = verticalScrollBar()->value();
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while( value > newValue - step ) {
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verticalScrollBar()->setValue( value );
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value -= step;
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}
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*/
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verticalScrollBar()->setValue( newValue );
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return true;
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}
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}
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bool PageWidget::readDown()
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{
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if( atBottom() )
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return false;
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else {
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int newValue = QMIN( verticalScrollBar()->value() + height() - 50,
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verticalScrollBar()->maxValue() );
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/*
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int step = 10;
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int value = verticalScrollBar()->value();
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while( value < newValue + step ) {
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verticalScrollBar()->setValue( value );
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value += step;
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}
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*/
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verticalScrollBar()->setValue( newValue );
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return true;
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}
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}
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}
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// vim:ts=2:sw=2:tw=78:et
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@ -31,6 +31,11 @@ namespace KPDF
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void setPage(int pagenum);
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int getPage() const { return m_currentPage; };
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void enableScrollBars( bool b );
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/**
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* Return true if the top resp. bottom of the page is visible.
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*/
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bool atTop() const;
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bool atBottom() const;
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public slots:
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void nextPage();
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void previousPage();
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@ -44,15 +49,20 @@ namespace KPDF
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void scrollLeft();
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void scrollBottom();
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void scrollTop();
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bool readUp();
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bool readDown();
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signals:
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void linkClicked(LinkAction*);
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void ReadUp();
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void ReadDown();
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void ZoomOut();
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void ZoomIn();
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protected:
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virtual void keyPressEvent( QKeyEvent* );
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void contentsMousePressEvent(QMouseEvent*);
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void contentsMouseReleaseEvent(QMouseEvent*);
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void contentsMouseMoveEvent(QMouseEvent*);
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virtual void wheelEvent( QWheelEvent * );
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virtual void drawContents ( QPainter *p, int, int, int, int );
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private:
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@ -105,6 +105,10 @@ Part::Part(QWidget *parentWidget, const char *widgetName,
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// set our XML-UI resource file
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setXMLFile("kpdf_part.rc");
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connect( m_outputDev, SIGNAL( ZoomIn() ), SLOT( slotZoomIn() ));
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connect( m_outputDev, SIGNAL( ZoomOut() ), SLOT( slotZoomOut() ));
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connect( m_outputDev, SIGNAL( ReadUp() ), SLOT( slotReadUp() ));
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connect( m_outputDev, SIGNAL( ReadDown() ), SLOT( slotReadDown() ));
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readSettings();
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}
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@ -114,7 +118,28 @@ Part::~Part()
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writeSettings();
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}
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void Part::slotReadUp()
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{
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if( !m_doc )
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return;
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if( !m_outputDev->readUp() ) {
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slotPreviousPage();
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m_outputDev->scrollBottom();
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}
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}
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void Part::slotReadDown()
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{
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if( !m_doc )
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return;
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if( !m_outputDev->readDown() ) {
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//todo fix if we can "next page" as in kghostview
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slotNextPage();
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m_outputDev->scrollTop();
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}
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}
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void Part::writeSettings()
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{
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@ -98,6 +98,8 @@ namespace KPDF
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void showScrollBars( bool );
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void showMarkList( bool );
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void slotReadUp();
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void slotReadDown();
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private:
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PDFDoc* m_doc;
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