C++ (Cpp) QgsComposerMap::cache Examples

Example #1

File: qgscomposeritemwidget.cpp Project: JanisE/QGIS

void QgsComposerItemWidget::on_mBackgroundColorButton_colorChanged( const QColor& newBackgroundColor )
{
  if ( !mItem )
  {
    return;
  }
  mItem->beginCommand( tr( "Background color changed" ) );
  mItem->setBackgroundColor( newBackgroundColor );

  //if the item is a composer map, we need to regenerate the map image
  //because it usually is cached
  QgsComposerMap* cm = dynamic_cast<QgsComposerMap *>( mItem );
  if ( cm )
  {
    cm->cache();
  }
  mItem->update();
  mItem->endCommand();
}

Example #2

File: qgscomposeritemwidget.cpp Project: AndrewBMartin/QGIS

void QgsComposerItemWidget::on_mBackgroundGroupBox_toggled( bool state )
{
  if ( !mItem )
  {
    return;
  }

  mItem->beginCommand( tr( "Item background toggled" ) );
  mItem->setBackgroundEnabled( state );

  //if the item is a composer map, we need to regenerate the map image
  //because it usually is cached
  QgsComposerMap* cm = dynamic_cast<QgsComposerMap *>( mItem );
  if ( cm )
  {
    cm->cache();
  }

  mItem->update();
  mItem->endCommand();
}