static void qwtFillBackground( QPainter *painter, QwtPlotCanvas *canvas ) { QVector<QRectF> rects; if ( canvas->testAttribute( Qt::WA_StyledBackground ) ) { QwtStyleSheetRecorder recorder( canvas->size() ); QPainter p( &recorder ); qwtDrawStyledBackground( canvas, &p ); p.end(); if ( recorder.background.brush.isOpaque() ) rects = recorder.clipRects; else rects += canvas->rect(); } else { const QRectF r = canvas->rect(); const double radius = canvas->borderRadius(); if ( radius > 0.0 ) { QSizeF sz( radius, radius ); rects += QRectF( r.topLeft(), sz ); rects += QRectF( r.topRight() - QPointF( radius, 0 ), sz ); rects += QRectF( r.bottomRight() - QPointF( radius, radius ), sz ); rects += QRectF( r.bottomLeft() - QPointF( 0, radius ), sz ); } } qwtFillBackground( painter, canvas, rects); }
/*! Paint event \param event Paint event */ void QwtPlotCanvas::paintEvent( QPaintEvent *event ) { QPainter painter( this ); painter.setClipRegion( event->region() ); if ( testPaintAttribute( QwtPlotCanvas::BackingStore ) && d_data->backingStore != NULL ) { QPixmap &bs = *d_data->backingStore; if ( bs.size() != size() ) { bs = QPixmap( size() ); #ifdef Q_WS_X11 if ( bs.x11Info().screen() != x11Info().screen() ) bs.x11SetScreen( x11Info().screen() ); #endif if ( testAttribute(Qt::WA_StyledBackground) ) { QPainter p( &bs ); qwtFillBackground( &p, this ); drawCanvas( &p, true ); } else { QPainter p; if ( d_data->borderRadius <= 0.0 ) { qwtFillPixmap( this, bs ); p.begin( &bs ); drawCanvas( &p, false ); } else { p.begin( &bs ); qwtFillBackground( &p, this ); drawCanvas( &p, true ); } if ( frameWidth() > 0 ) drawBorder( &p ); } } painter.drawPixmap( 0, 0, *d_data->backingStore ); } else { if ( testAttribute(Qt::WA_StyledBackground ) ) { if ( testAttribute( Qt::WA_OpaquePaintEvent ) ) { qwtFillBackground( &painter, this ); drawCanvas( &painter, true ); } else { drawCanvas( &painter, false ); } } else { if ( testAttribute( Qt::WA_OpaquePaintEvent ) ) { if ( autoFillBackground() ) { qwtFillBackground( &painter, this ); qwtDrawBackground( &painter, this ); } } else { if ( borderRadius() > 0.0 ) { QPainterPath clipPath; clipPath.addRect( rect() ); clipPath = clipPath.subtracted( borderPath( rect() ) ); painter.save(); painter.setClipPath( clipPath, Qt::IntersectClip ); qwtFillBackground( &painter, this ); qwtDrawBackground( &painter, this ); painter.restore(); } } drawCanvas( &painter, false ); if ( frameWidth() > 0 ) drawBorder( &painter ); } } if ( hasFocus() && focusIndicator() == CanvasFocusIndicator ) drawFocusIndicator( &painter ); }
void QwtPlotAbstractCanvas::fillBackground( QPainter *painter ) { qwtFillBackground( painter, canvasWidget() ); }
/*! Paint event \param event Paint event */ void QwtPlotCanvas::paintEvent( QPaintEvent *event ) { QPainter painter( this ); painter.setClipRegion( event->region() ); if ( testPaintAttribute( QwtPlotCanvas::BackingStore ) && d_data->backingStore != NULL ) { QPixmap &bs = *d_data->backingStore; if ( bs.size() != size() ) { bs = QPixmap( size() ); #ifdef Q_WS_X11 if ( bs.x11Info().screen() != x11Info().screen() ) bs.x11SetScreen( x11Info().screen() ); #endif if ( testAttribute(Qt::WA_StyledBackground) ) { QPainter p( &bs ); qwtFillBackground( &p, this ); drawCanvas( &p, true ); } else { QPainter p; if ( d_data->borderRadius <= 0.0 ) { #if QT_VERSION >= 0x050000 QwtPainter::fillPixmap( this, bs ); #else bs.fill( this, 0, 0 ); #endif p.begin( &bs ); drawCanvas( &p, false ); } else { p.begin( &bs ); qwtFillBackground( &p, this ); drawCanvas( &p, true ); } if ( frameWidth() > 0 ) drawBorder( &p ); } } painter.drawPixmap( 0, 0, *d_data->backingStore ); } else { if ( testAttribute(Qt::WA_StyledBackground ) ) { if ( testAttribute( Qt::WA_OpaquePaintEvent ) ) { qwtFillBackground( &painter, this ); drawCanvas( &painter, true ); } else { drawCanvas( &painter, false ); } } else { if ( testAttribute( Qt::WA_OpaquePaintEvent ) ) { if ( autoFillBackground() ) qwtDrawBackground( &painter, this ); } drawCanvas( &painter, false ); if ( frameWidth() > 0 ) drawBorder( &painter ); } } if ( hasFocus() && focusIndicator() == CanvasFocusIndicator ) drawFocusIndicator( &painter ); }