void QgsMapRendererParallelJob::renderLabelsStatic( QgsMapRendererParallelJob* self )
{
QPainter painter( &self->mFinalImage );
try
{
drawLabeling( self->mSettings, self->mLabelingRenderContext, self->mLabelingEngine, self->mLabelingEngineV2, &painter );
}
catch ( QgsException & e )
{
Q_UNUSED( e );
QgsDebugMsg( "Caught unhandled QgsException: " + e.what() );
}
catch ( std::exception & e )
{
Q_UNUSED( e );
QgsDebugMsg( "Caught unhandled std::exception: " + QString::fromAscii( e.what() ) );
}
catch ( ... )
{
QgsDebugMsg( "Caught unhandled unknown exception" );
}
painter.end();
}
void QgsMapRendererParallelJob::renderLabelsStatic( QgsMapRendererParallelJob *self )
{
LabelRenderJob &job = self->mLabelJob;
if ( !job.cached )
{
QTime labelTime;
labelTime.start();
QPainter painter;
if ( job.img )
{
job.img->fill( 0 );
painter.begin( job.img );
}
else
{
painter.begin( &self->mFinalImage );
}
// draw the labels!
try
{
drawLabeling( self->mSettings, job.context, self->mLabelingEngineV2.get(), &painter );
}
catch ( QgsException &e )
{
Q_UNUSED( e );
QgsDebugMsg( "Caught unhandled QgsException: " + e.what() );
}
catch ( std::exception &e )
{
Q_UNUSED( e );
QgsDebugMsg( "Caught unhandled std::exception: " + QString::fromAscii( e.what() ) );
}
catch ( ... )
{
QgsDebugMsg( "Caught unhandled unknown exception" );
}
painter.end();
job.renderingTime = labelTime.elapsed();
job.complete = true;
job.participatingLayers = _qgis_listRawToQPointer( self->mLabelingEngineV2->participatingLayers() );
if ( job.img )
{
self->mFinalImage = composeImage( self->mSettings, self->mLayerJobs, self->mLabelJob );
}
}
}
void QgsMapRendererCustomPainterJob::doRender()
{
QgsDebugMsg( "Starting to render layer stack." );
QTime renderTime;
renderTime.start();
for ( LayerRenderJobs::iterator it = mLayerJobs.begin(); it != mLayerJobs.end(); ++it )
{
LayerRenderJob& job = *it;
if ( job.context.renderingStopped() )
break;
if ( job.context.useAdvancedEffects() )
{
// Set the QPainter composition mode so that this layer is rendered using
// the desired blending mode
mPainter->setCompositionMode( job.blendMode );
}
if ( !job.cached )
{
QTime layerTime;
layerTime.start();
if ( job.img )
job.img->fill( 0 );
job.renderer->render();
job.renderingTime = layerTime.elapsed();
}
if ( job.img )
{
// If we flattened this layer for alternate blend modes, composite it now
mPainter->setOpacity( job.opacity );
mPainter->drawImage( 0, 0, *job.img );
mPainter->setOpacity( 1.0 );
}
}
QgsDebugMsg( "Done rendering map layers" );
if ( mSettings.testFlag( QgsMapSettings::DrawLabeling ) && !mLabelingRenderContext.renderingStopped() )
drawLabeling( mSettings, mLabelingRenderContext, mLabelingEngineV2, mPainter );
QgsDebugMsg( "Rendering completed in (seconds): " + QString( "%1" ).arg( renderTime.elapsed() / 1000.0 ) );
}
