WPaintDevice *WWidgetRasterPainter::getPaintDevice(bool paintUpdate)
{
if (!device_ || widget_->sizeChanged_) {
#ifdef WT_HAS_WRASTERIMAGE
delete device_;
device_ = createPaintDevice(paintUpdate);
#else
throw WException("Wt was built without WRasterImage (graphicsmagick)");
#endif
}
#ifdef WT_HAS_WRASTERIMAGE
if (!paintUpdate)
device_->clear();
return device_;
#else
return 0;
#endif
}
void Pt_MSlider::init()
{
fetchNewRow();
createController();
createView();
if (this->currentView) {
this->m_subject->setView(this->currentView); // transfers ownership to controller
}
//wait for the resource loading to finish
while (MTheme::instance()->hasPendingRequests()) {
usleep(100);
QCoreApplication::processEvents();
}
// create pixmap paintdevice
createPaintDevice();
}
WPaintDevice *WWidgetCanvasPainter::getPaintDevice(bool paintUpdate)
{
return createPaintDevice(paintUpdate);
}
WPaintDevice *WWidgetVectorPainter::getPaintDevice(bool paintUpdate)
{
return createPaintDevice(paintUpdate);
}
