QList< QPair< QgsSymbolLayerV2*, QgsSymbolV2* > > QgsDxfExport::symbolLayers()
{
QList< QPair< QgsSymbolLayerV2*, QgsSymbolV2* > > symbolLayers;
QList< QgsMapLayer* >::iterator lIt = mLayers.begin();
for ( ; lIt != mLayers.end(); ++lIt )
{
//cast to vector layer
QgsVectorLayer* vl = qobject_cast<QgsVectorLayer*>( *lIt );
if ( !vl )
{
continue;
}
//get rendererv2
QgsFeatureRendererV2* r = vl->rendererV2();
if ( !r )
{
continue;
}
//get all symbols
QgsSymbolV2List symbols = r->symbols();
QgsSymbolV2List::iterator symbolIt = symbols.begin();
for ( ; symbolIt != symbols.end(); ++symbolIt )
{
int maxSymbolLayers = ( *symbolIt )->symbolLayerCount();
if ( mSymbologyExport != SymbolLayerSymbology )
{
maxSymbolLayers = 1;
}
for ( int i = 0; i < maxSymbolLayers; ++i )
{
symbolLayers.append( qMakePair(( *symbolIt )->symbolLayer( i ), *symbolIt ) ) ;
}
}
}
return symbolLayers;
}
void QgsDxfExport::writeEntities()
{
startSection();
writeGroup( 2, "ENTITIES" );
//label engine
QgsDxfPalLabeling labelEngine( this, mExtent.isEmpty() ? dxfExtent() : mExtent, mSymbologyScaleDenominator, mMapUnits );
QgsRenderContext& ctx = labelEngine.renderContext();
//iterate through the maplayers
QList< QgsMapLayer* >::iterator layerIt = mLayers.begin();
for ( ; layerIt != mLayers.end(); ++layerIt )
{
QgsVectorLayer* vl = qobject_cast<QgsVectorLayer*>( *layerIt );
if ( !vl || !layerIsScaleBasedVisible( vl ) )
{
continue;
}
QgsSymbolV2RenderContext sctx( ctx, QgsSymbolV2::MM , 1.0, false, 0, 0 );
QgsFeatureRendererV2* renderer = vl->rendererV2();
renderer->startRender( ctx, vl->pendingFields() );
QStringList attributes = renderer->usedAttributes();
bool labelLayer = ( labelEngine.prepareLayer( vl, attributes, ctx ) != 0 );
if ( mSymbologyExport == QgsDxfExport::SymbolLayerSymbology && ( renderer->capabilities() & QgsFeatureRendererV2::SymbolLevels ) &&
renderer->usingSymbolLevels() )
{
writeEntitiesSymbolLevels( vl );
renderer->stopRender( ctx );
continue;
}
QgsFeatureRequest freq = QgsFeatureRequest().setSubsetOfAttributes(
attributes, vl->pendingFields() );
if ( !mExtent.isEmpty() )
{
freq.setFilterRect( mExtent );
}
QgsFeatureIterator featureIt = vl->getFeatures( freq );
QgsFeature fet;
while ( featureIt.nextFeature( fet ) )
{
sctx.setFeature( &fet );
if ( mSymbologyExport == NoSymbology )
{
addFeature( sctx, dxfLayerName( vl->name() ), 0, 0 ); //no symbology at all
}
else
{
if ( !renderer )
{
continue;
}
QgsSymbolV2List symbolList = renderer->symbolsForFeature( fet );
if ( symbolList.size() < 1 )
{
continue;
}
if ( mSymbologyExport == QgsDxfExport::SymbolLayerSymbology ) //symbol layer symbology, but layer does not use symbol levels
{
QgsSymbolV2List::iterator symbolIt = symbolList.begin();
for ( ; symbolIt != symbolList.end(); ++symbolIt )
{
int nSymbolLayers = ( *symbolIt )->symbolLayerCount();
for ( int i = 0; i < nSymbolLayers; ++i )
{
addFeature( sctx, dxfLayerName( vl->name() ), ( *symbolIt )->symbolLayer( i ), *symbolIt );
}
}
}
else
{
//take first symbollayer from first symbol
QgsSymbolV2* s = symbolList.first();
if ( !s || s->symbolLayerCount() < 1 )
{
continue;
}
addFeature( sctx, dxfLayerName( vl->name() ), s->symbolLayer( 0 ), s );
}
if ( labelLayer )
{
labelEngine.registerFeature( vl->id(), fet, ctx );
}
}
}
renderer->stopRender( ctx );
}
labelEngine.drawLabeling( ctx );
endSection();
}
