void QgsSymbolSelectorWidget::changeLayer( QgsSymbolLayer *newLayer )
{
SymbolLayerItem *item = currentLayerItem();
QgsSymbolLayer *layer = item->layer();
if ( layer->subSymbol() )
{
item->removeRow( 0 );
}
// update symbol layer item
item->setLayer( newLayer );
// When it is a marker symbol
if ( newLayer->subSymbol() )
{
loadSymbol( newLayer->subSymbol(), item );
layersTree->setExpanded( item->index(), true );
}
// Change the symbol at last to avoid deleting item's layer
QgsSymbol *symbol = static_cast<SymbolLayerItem *>( item->parent() )->symbol();
int layerIdx = item->parent()->rowCount() - item->row() - 1;
symbol->changeSymbolLayer( layerIdx, newLayer );
item->updatePreview();
updatePreview();
// Important: This lets the layer have its own layer properties widget
layerChanged();
}
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 QgsSymbolV2PropertiesDialog::layerTypeChanged()
{
QgsSymbolLayerV2* layer = currentLayer();
if ( layer == NULL ) return;
QString newLayerType = cboLayerType->itemData( cboLayerType->currentIndex() ).toString();
if ( layer->layerType() == newLayerType )
return;
// get creation function for new layer from registry
QgsSymbolLayerV2Registry* pReg = QgsSymbolLayerV2Registry::instance();
QgsSymbolLayerV2AbstractMetadata* am = pReg->symbolLayerMetadata( newLayerType );
if ( am == NULL ) // check whether the metadata is assigned
return;
// change layer to a new (with different type)
QgsSymbolLayerV2* newLayer = am->createSymbolLayer( QgsStringMap() );
if ( newLayer == NULL )
return;
mSymbol->changeSymbolLayer( currentLayerIndex(), newLayer );
updateSymbolLayerWidget( newLayer );
// update symbol layer item
SymbolLayerItem* item = currentLayerItem();
item->setLayer( newLayer );
item->updatePreview();
updatePreview();
}
void QgsSymbolSelectorWidget::updateLayerPreview()
{
// get current layer item and update its icon
SymbolLayerItem *item = currentLayerItem();
if ( item )
item->updatePreview();
// update also preview of the whole symbol
updatePreview();
}
void QgsSymbolV2PropertiesDialog::updateLayerPreview()
{
// get current layer item and update its icon
SymbolLayerItem* item = currentLayerItem();
if ( item )
item->updatePreview();
// update also preview of the whole symbol
updatePreview();
}
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;
}
