QgsFeatureRenderer* QgsFeatureRenderer::load( QDomElement& element )
{
// <renderer-v2 type=""> ... </renderer-v2>
if ( element.isNull() )
return nullptr;
// load renderer
QString rendererType = element.attribute( "type" );
QgsRendererAbstractMetadata* m = QgsRendererRegistry::instance()->rendererMetadata( rendererType );
if ( !m )
return nullptr;
QgsFeatureRenderer* r = m->createRenderer( element );
if ( r )
{
r->setUsingSymbolLevels( element.attribute( "symbollevels", "0" ).toInt() );
r->setForceRasterRender( element.attribute( "forceraster", "0" ).toInt() );
//restore layer effect
QDomElement effectElem = element.firstChildElement( "effect" );
if ( !effectElem.isNull() )
{
r->setPaintEffect( QgsPaintEffectRegistry::instance()->createEffect( effectElem ) );
}
// restore order by
QDomElement orderByElem = element.firstChildElement( "orderby" );
r->mOrderBy.load( orderByElem );
r->setOrderByEnabled( element.attribute( "enableorderby", "0" ).toInt() );
}
return r;
}
QgsFeatureRenderer *QgsGrassEditRenderer::create( QDomElement &element, const QgsReadWriteContext &context )
{
QgsGrassEditRenderer *renderer = new QgsGrassEditRenderer();
QDomElement childElem = element.firstChildElement();
while ( !childElem.isNull() )
{
QDomElement elem = childElem.firstChildElement();
if ( !elem.isNull() )
{
QString rendererType = elem.attribute( QStringLiteral( "type" ) );
QgsDebugMsg( "childElem.tagName() = " + childElem.tagName() + " rendererType = " + rendererType );
QgsRendererAbstractMetadata *meta = QgsApplication::rendererRegistry()->rendererMetadata( rendererType );
if ( meta )
{
QgsFeatureRenderer *subRenderer = meta->createRenderer( elem, context );
if ( subRenderer )
{
QgsDebugMsg( "renderer created : " + renderer->type() );
if ( childElem.tagName() == QLatin1String( "line" ) )
{
renderer->setLineRenderer( subRenderer );
}
else if ( childElem.tagName() == QLatin1String( "marker" ) )
{
renderer->setMarkerRenderer( subRenderer );
}
}
}
}
childElem = childElem.nextSiblingElement();
}
return renderer;
}