/*!
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 = QwtPainter::backingStore( this, size() );
if ( testAttribute(Qt::WA_StyledBackground) )
{
QPainter p( &bs );
qwtFillBackground( &p, this );
drawCanvas( &p, true );
}
else
{
QPainter p;
if ( d_data->borderRadius <= 0.0 )
{
QwtPainter::fillPixmap( 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 )
{
bs.fill( this, 0, 0 );
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 );
}
void QwtPlotGLCanvas::paintGL()
{
const bool hasFocusIndicator =
hasFocus() && focusIndicator() == CanvasFocusIndicator;
QPainter painter;
#if QT_VERSION < 0x040600
painter.begin( this );
draw( &painter );
#else
if ( testPaintAttribute( QwtPlotGLCanvas::BackingStore ) )
{
if ( d_data->fbo == NULL || d_data->fbo->size() != size() )
{
invalidateBackingStore();
const int numSamples = 16;
QGLFramebufferObjectFormat format;
format.setSamples( numSamples );
format.setAttachment(QGLFramebufferObject::CombinedDepthStencil);
QGLFramebufferObject fbo( size(), format );
QPainter fboPainter( &fbo );
draw( &fboPainter);
fboPainter.end();
d_data->fbo = new QGLFramebufferObject( size() );
QRect rect(0, 0, width(), height());
QGLFramebufferObject::blitFramebuffer(d_data->fbo, rect, &fbo, rect);
}
// drawTexture( QRectF( -1.0, 1.0, 2.0, -2.0 ), d_data->fbo->texture() );
if ( hasFocusIndicator )
painter.begin( this );
glBindTexture(GL_TEXTURE_2D, d_data->fbo->texture());
glEnable(GL_TEXTURE_2D);
glBegin(GL_QUADS);
glTexCoord2f(0.0f, 0.0f);
glVertex2f(-1.0f, -1.0f);
glTexCoord2f(1.0f, 0.0f);
glVertex2f( 1.0f, -1.0f);
glTexCoord2f(1.0f, 1.0f);
glVertex2f( 1.0f, 1.0f);
glTexCoord2f(0.0f, 1.0f);
glVertex2f(-1.0f, 1.0f);
glEnd();
}
else
{
painter.begin( this );
draw( &painter );
}
#endif
if ( hasFocus() && focusIndicator() == CanvasFocusIndicator )
drawFocusIndicator( &painter );
}
