void QgsGraduatedSymbolRendererWidget::changeRangeSymbol( int rangeIdx ) { const QgsRendererRange &range = mRenderer->ranges()[rangeIdx]; std::unique_ptr< QgsSymbol > newSymbol( range.symbol()->clone() ); QgsPanelWidget *panel = QgsPanelWidget::findParentPanel( this ); if ( panel && panel->dockMode() ) { // bit tricky here - the widget doesn't take ownership of the symbol. So we need it to last for the duration of the // panel's existence. Accordingly, just kinda give it ownership here, and clean up in cleanUpSymbolSelector QgsSymbolSelectorWidget *dlg = new QgsSymbolSelectorWidget( newSymbol.release(), mStyle, mLayer, panel ); dlg->setContext( mContext ); dlg->setPanelTitle( range.label() ); connect( dlg, &QgsPanelWidget::widgetChanged, this, &QgsGraduatedSymbolRendererWidget::updateSymbolsFromWidget ); connect( dlg, &QgsPanelWidget::panelAccepted, this, &QgsGraduatedSymbolRendererWidget::cleanUpSymbolSelector ); openPanel( dlg ); } else { QgsSymbolSelectorDialog dlg( newSymbol.get(), mStyle, mLayer, panel ); dlg.setContext( mContext ); if ( !dlg.exec() || !newSymbol ) { return; } mGraduatedSymbol = std::move( newSymbol ); applyChangeToSymbol(); } }
void QgsPointDisplacementRendererWidget::on_mCenterSymbolPushButton_clicked() { if ( !mRenderer || !mRenderer->centerSymbol() ) { return; } QgsMarkerSymbol* markerSymbol = mRenderer->centerSymbol()->clone(); QgsSymbolSelectorWidget* dlg = new QgsSymbolSelectorWidget( markerSymbol, QgsStyle::defaultStyle(), mLayer, this ); dlg->setPanelTitle( tr( "Center symbol" ) ); QgsSymbolWidgetContext context = mContext; QgsExpressionContextScope scope; scope.addVariable( QgsExpressionContextScope::StaticVariable( QgsExpressionContext::EXPR_CLUSTER_COLOR, "", true ) ); scope.addVariable( QgsExpressionContextScope::StaticVariable( QgsExpressionContext::EXPR_CLUSTER_SIZE, 0, true ) ); QList< QgsExpressionContextScope > scopes = context.additionalExpressionContextScopes(); scopes << scope; context.setAdditionalExpressionContextScopes( scopes ); dlg->setContext( context ); connect( dlg, SIGNAL( widgetChanged() ), this, SLOT( updateCenterSymbolFromWidget() ) ); connect( dlg, SIGNAL( panelAccepted( QgsPanelWidget* ) ), this, SLOT( cleanUpSymbolSelector( QgsPanelWidget* ) ) ); openPanel( dlg ); }