C++ (Cpp) QgsComposerMap::crs Examples

Example #1

File: qgscomposerlabel.cpp Project: ndavid/QGIS

void QgsComposerLabel::refreshExpressionContext()
{
  if ( !mComposition )
    return;

  QgsVectorLayer *layer = nullptr;
  if ( mComposition->atlasComposition().enabled() )
  {
    layer = mComposition->atlasComposition().coverageLayer();
  }

  //setup distance area conversion
  if ( layer )
  {
    mDistanceArea->setSourceCrs( layer->crs() );
  }
  else
  {
    //set to composition's reference map's crs
    QgsComposerMap *referenceMap = mComposition->referenceMap();
    if ( referenceMap )
      mDistanceArea->setSourceCrs( referenceMap->crs() );
  }
  mDistanceArea->setEllipsoid( mComposition->project()->ellipsoid() );
  contentChanged();

  update();
}

Example #2

File: qgslayoutitemhtml.cpp Project: minorua/QGIS

void QgsLayoutItemHtml::setExpressionContext( const QgsFeature &feature, QgsVectorLayer *layer )
{
  mExpressionFeature = feature;
  mExpressionLayer = layer;

  //setup distance area conversion
  if ( layer )
  {
    mDistanceArea.setSourceCrs( layer->crs() );
  }
  else if ( mLayout )
  {
#if 0 //TODO
    //set to composition's mapsettings' crs
    QgsComposerMap *referenceMap = mComposition->referenceMap();
    if ( referenceMap )
      mDistanceArea->setSourceCrs( referenceMap->crs() );
#endif
  }
  if ( mLayout )
  {
    mDistanceArea.setEllipsoid( mLayout->project()->ellipsoid() );
  }

  // create JSON representation of feature
  QgsJsonExporter exporter( layer );
  exporter.setIncludeRelated( true );
  mAtlasFeatureJSON = exporter.exportFeature( feature );
}