C++ (Cpp) QgsSymbolWidgetContext::setAdditionalExpressionContextScopes 예제들

예제 #1

void QgsPointDisplacementRendererWidget::on_mRendererSettingsButton_clicked()
{
  if ( !mRenderer )
    return;

  QgsRendererAbstractMetadata* m = QgsRendererRegistry::instance()->rendererMetadata( mRenderer->embeddedRenderer()->type() );
  if ( m )
  {
    QgsRendererWidget* w = m->createRendererWidget( mLayer, mStyle, mRenderer->embeddedRenderer()->clone() );
    w->setPanelTitle( tr( "Renderer settings" ) );

    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 );
    w->setContext( context );

    connect( w, SIGNAL( widgetChanged() ), this, SLOT( updateRendererFromWidget() ) );
    openPanel( w );
  }
}

예제 #2

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 );
}

예제 #3

파일: qgspointclusterrendererwidget.cpp 프로젝트: alexbruy/QGIS

void QgsPointClusterRendererWidget::mRendererSettingsButton_clicked()
{
  if ( !mRenderer )
    return;

  QgsRendererAbstractMetadata *m = QgsApplication::rendererRegistry()->rendererMetadata( mRenderer->embeddedRenderer()->type() );
  if ( m )
  {
    QgsRendererWidget *w = m->createRendererWidget( mLayer, mStyle, mRenderer->embeddedRenderer()->clone() );
    w->setPanelTitle( tr( "Renderer Settings" ) );

    QgsExpressionContextScope scope;
    scope.addVariable( QgsExpressionContextScope::StaticVariable( QgsExpressionContext::EXPR_CLUSTER_COLOR, "", true ) );
    scope.addVariable( QgsExpressionContextScope::StaticVariable( QgsExpressionContext::EXPR_CLUSTER_SIZE, 0, true ) );
    QList< QgsExpressionContextScope > scopes = mContext.additionalExpressionContextScopes();
    scopes << scope;
    QgsSymbolWidgetContext context = mContext;
    context.setAdditionalExpressionContextScopes( scopes );
    w->setContext( context );
    connect( w, &QgsPanelWidget::widgetChanged, this, &QgsPointClusterRendererWidget::updateRendererFromWidget );
    w->setDockMode( this->dockMode() );
    openPanel( w );
  }
}