QgsRenderContext QgsRenderContext::fromMapSettings( const QgsMapSettings& mapSettings )
{
QgsRenderContext ctx;
ctx.setMapToPixel( mapSettings.mapToPixel() );
ctx.setExtent( mapSettings.visibleExtent() );
ctx.setDrawEditingInformation( mapSettings.testFlag( QgsMapSettings::DrawEditingInfo ) );
ctx.setForceVectorOutput( mapSettings.testFlag( QgsMapSettings::ForceVectorOutput ) );
ctx.setUseAdvancedEffects( mapSettings.testFlag( QgsMapSettings::UseAdvancedEffects ) );
ctx.setUseRenderingOptimization( mapSettings.testFlag( QgsMapSettings::UseRenderingOptimization ) );
ctx.setCoordinateTransform( 0 );
ctx.setSelectionColor( mapSettings.selectionColor() );
ctx.setShowSelection( mapSettings.showSelection() );
ctx.setRasterScaleFactor( 1.0 );
ctx.setScaleFactor( mapSettings.outputDpi() / 25.4 ); // = pixels per mm
ctx.setRendererScale( mapSettings.scale() );
//this flag is only for stopping during the current rendering progress,
//so must be false at every new render operation
ctx.setRenderingStopped( false );
return ctx;
}
