bool QgsSymbolV2::appendSymbolLayer( QgsSymbolLayerV2* layer )
{
if ( layer == NULL || !isSymbolLayerCompatible( layer->type() ) )
return false;
mLayers.append( layer );
return true;
}
bool QgsSymbolV2::insertSymbolLayer( int index, QgsSymbolLayerV2* layer )
{
if ( index < 0 || index > mLayers.count() ) // can be added also after the last index
return false;
if ( layer == NULL || !isSymbolLayerCompatible( layer->type() ) )
return false;
mLayers.insert( index, layer );
return true;
}
bool QgsSymbolV2::changeSymbolLayer( int index, QgsSymbolLayerV2* layer )
{
if ( index < 0 || index >= mLayers.count() )
return false;
if ( layer == NULL || !isSymbolLayerCompatible( layer->type() ) )
return false;
delete mLayers[index]; // first delete the original layer
mLayers[index] = layer; // set new layer
return true;
}
QgsSymbolV2::QgsSymbolV2( SymbolType type, QgsSymbolLayerV2List layers )
: mType( type ), mLayers( layers ), mAlpha( 1.0 ), mRenderHints( 0 ), mLayer( NULL )
{
// check they're all correct symbol layers
for ( int i = 0; i < mLayers.count(); i++ )
{
if ( mLayers[i] == NULL )
{
mLayers.removeAt( i-- );
}
else if ( !isSymbolLayerCompatible( mLayers[i]->type() ) )
{
delete mLayers[i];
mLayers.removeAt( i-- );
}
}
}
