void QgsSymbolSelectorWidget::moveLayerByOffset( int offset )
{
SymbolLayerItem *item = currentLayerItem();
if ( !item )
return;
int row = item->row();
SymbolLayerItem *parent = static_cast<SymbolLayerItem *>( item->parent() );
QgsSymbol *parentSymbol = parent->symbol();
int layerIdx = parent->rowCount() - row - 1;
// switch layers
QgsSymbolLayer *tmpLayer = parentSymbol->takeSymbolLayer( layerIdx );
parentSymbol->insertSymbolLayer( layerIdx - offset, tmpLayer );
QList<QStandardItem *> rowItems = parent->takeRow( row );
parent->insertRows( row + offset, rowItems );
parent->updatePreview();
QModelIndex newIdx = rowItems[ 0 ]->index();
layersTree->setCurrentIndex( newIdx );
updatePreview();
updateUi();
}
void QgsSymbolSelectorWidget::removeLayer()
{
SymbolLayerItem *item = currentLayerItem();
int row = item->row();
SymbolLayerItem *parent = static_cast<SymbolLayerItem *>( item->parent() );
int layerIdx = parent->rowCount() - row - 1; // IMPORTANT
QgsSymbol *parentSymbol = parent->symbol();
QgsSymbolLayer *tmpLayer = parentSymbol->takeSymbolLayer( layerIdx );
parent->removeRow( row );
parent->updatePreview();
QModelIndex newIdx = parent->child( 0 )->index();
layersTree->setCurrentIndex( newIdx );
updateUi();
updatePreview();
//finally delete the removed layer pointer
delete tmpLayer;
}