void QwtPlotAbstractCanvas::drawBackground( QPainter *painter )
{
qwtDrawBackground( 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 )
{
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 );
}
/*!
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 );
}