QgsSingleSymbolRendererV2* QgsSingleSymbolRendererV2::convertFromRenderer( const QgsFeatureRendererV2 *renderer )
{
if ( renderer->type() == "singleSymbol" )
{
return dynamic_cast<QgsSingleSymbolRendererV2*>( renderer->clone() );
}
if ( renderer->type() == "pointDisplacement" )
{
const QgsPointDisplacementRenderer* pointDisplacementRenderer = dynamic_cast<const QgsPointDisplacementRenderer*>( renderer );
if ( pointDisplacementRenderer )
return convertFromRenderer( pointDisplacementRenderer->embeddedRenderer() );
}
if ( renderer->type() == "invertedPolygonRenderer" )
{
const QgsInvertedPolygonRenderer* invertedPolygonRenderer = dynamic_cast<const QgsInvertedPolygonRenderer*>( renderer );
if ( invertedPolygonRenderer )
return convertFromRenderer( invertedPolygonRenderer->embeddedRenderer() );
}
QgsSymbolV2List symbols = const_cast<QgsFeatureRendererV2 *>( renderer )->symbols();
if ( symbols.size() > 0 )
{
return new QgsSingleSymbolRendererV2( symbols.at( 0 )->clone() );
}
return 0;
}
QgsSingleSymbolRenderer *QgsSingleSymbolRenderer::convertFromRenderer( const QgsFeatureRenderer *renderer )
{
QgsSingleSymbolRenderer *r = nullptr;
if ( renderer->type() == QLatin1String( "singleSymbol" ) )
{
r = dynamic_cast<QgsSingleSymbolRenderer *>( renderer->clone() );
}
else if ( renderer->type() == QLatin1String( "pointDisplacement" ) || renderer->type() == QLatin1String( "pointCluster" ) )
{
const QgsPointDistanceRenderer *pointDistanceRenderer = dynamic_cast<const QgsPointDistanceRenderer *>( renderer );
if ( pointDistanceRenderer )
r = convertFromRenderer( pointDistanceRenderer->embeddedRenderer() );
}
else if ( renderer->type() == QLatin1String( "invertedPolygonRenderer" ) )
{
const QgsInvertedPolygonRenderer *invertedPolygonRenderer = dynamic_cast<const QgsInvertedPolygonRenderer *>( renderer );
if ( invertedPolygonRenderer )
r = convertFromRenderer( invertedPolygonRenderer->embeddedRenderer() );
}
if ( !r )
{
QgsRenderContext context;
QgsSymbolList symbols = const_cast<QgsFeatureRenderer *>( renderer )->symbols( context );
if ( !symbols.isEmpty() )
{
r = new QgsSingleSymbolRenderer( symbols.at( 0 )->clone() );
}
}
if ( r )
{
r->setOrderBy( renderer->orderBy() );
r->setOrderByEnabled( renderer->orderByEnabled() );
}
return r;
}
