QgsSymbolV2* QgsSingleSymbolRendererV2::symbolForFeature( QgsFeature& feature, QgsRenderContext &context )
{
context.expressionContext().setFeature( feature );
if ( !mRotation.data() && !mSizeScale.data() ) return mSymbol.data();
const double rotation = mRotation.data() ? mRotation->evaluate( &context.expressionContext() ).toDouble() : 0;
const double sizeScale = mSizeScale.data() ? mSizeScale->evaluate( &context.expressionContext() ).toDouble() : 1.;
if ( mTempSymbol->type() == QgsSymbolV2::Marker )
{
QgsMarkerSymbolV2* markerSymbol = static_cast<QgsMarkerSymbolV2*>( mTempSymbol.data() );
if ( mRotation.data() ) markerSymbol->setAngle( rotation );
markerSymbol->setSize( sizeScale * mOrigSize );
markerSymbol->setScaleMethod( mScaleMethod );
}
else if ( mTempSymbol->type() == QgsSymbolV2::Line )
{
QgsLineSymbolV2* lineSymbol = static_cast<QgsLineSymbolV2*>( mTempSymbol.data() );
lineSymbol->setWidth( sizeScale * mOrigSize );
}
else if ( mTempSymbol->type() == QgsSymbolV2::Fill )
{
QgsFillSymbolV2* fillSymbol = static_cast<QgsFillSymbolV2*>( mTempSymbol.data() );
if ( mRotation.data() ) fillSymbol->setAngle( rotation );
}
return mTempSymbol.data();
}
QgsSymbolV2* QgsSingleSymbolRendererV2::symbolForFeature( QgsFeature& feature )
{
if ( mRotationFieldIdx == -1 && mSizeScaleFieldIdx == -1 )
return mSymbol;
double rotation = 0;
double sizeScale = 1;
if ( mRotationFieldIdx != -1 )
{
rotation = feature.attributeMap()[mRotationFieldIdx].toDouble();
}
if ( mSizeScaleFieldIdx != -1 )
{
sizeScale = feature.attributeMap()[mSizeScaleFieldIdx].toDouble();
}
if ( mTempSymbol->type() == QgsSymbolV2::Marker )
{
QgsMarkerSymbolV2* markerSymbol = static_cast<QgsMarkerSymbolV2*>( mTempSymbol );
if ( mRotationFieldIdx != -1 )
markerSymbol->setAngle( rotation );
if ( mSizeScaleFieldIdx != -1 )
markerSymbol->setSize( sizeScale * mOrigSize );
markerSymbol->setScaleMethod( mScaleMethod );
}
else if ( mTempSymbol->type() == QgsSymbolV2::Line )
{
QgsLineSymbolV2* lineSymbol = static_cast<QgsLineSymbolV2*>( mTempSymbol );
if ( mSizeScaleFieldIdx != -1 )
lineSymbol->setWidth( sizeScale * mOrigSize );
}
else if ( mTempSymbol->type() == QgsSymbolV2::Fill )
{
QgsFillSymbolV2* fillSymbol = static_cast<QgsFillSymbolV2*>( mTempSymbol );
if ( mRotationFieldIdx != -1 )
fillSymbol->setAngle( rotation );
}
return mTempSymbol;
}