Esempi in C++ (Cpp) per renderBegun

Esempio n. 1

File: qgslayoutatlas.cpp Progetto: AlisterH/Quantum-GIS

bool QgsLayoutAtlas::beginRender()
{
  if ( !mCoverageLayer )
  {
    return false;
  }

  emit renderBegun();

  if ( !updateFeatures() )
  {
    //no matching features found
    return false;
  }

  return true;
}

Esempio n. 2

File: qgsatlascomposition.cpp Progetto: 3liz/Quantum-GIS

bool QgsAtlasComposition::beginRender()
{
  if ( !mCoverageLayer )
  {
    return false;
  }

  emit renderBegun();

  bool featuresUpdated = updateFeatures();
  if ( !featuresUpdated )
  {
    //no matching features found
    return false;
  }

  return true;
}

Esempio n. 3

File: qgsatlascomposition.cpp Progetto: Say-no/QGIS

bool QgsAtlasComposition::beginRender()
{
  if ( !mCoverageLayer )
  {
    return false;
  }

  emit renderBegun();

  bool featuresUpdated = updateFeatures();
  if ( !featuresUpdated )
  {
    //no matching features found
    return false;
  }

  // special columns for expressions
  QgsExpression::setSpecialColumn( "$numpages", QVariant( mComposition->numPages() ) );
  QgsExpression::setSpecialColumn( "$numfeatures", QVariant(( int )mFeatureIds.size() ) );

  return true;
}