QgsComposerObject::QgsComposerObject( QgsComposition* composition )
: QObject( 0 )
, mComposition( composition )
{
// data defined strings
mDataDefinedNames.insert( QgsComposerObject::TestProperty, QString( "dataDefinedTestProperty" ) );
if ( mComposition )
{
//connect to atlas toggling on/off and coverage layer and feature changes
//to update data defined values
connect( &mComposition->atlasComposition(), SIGNAL( toggled( bool ) ), this, SLOT( refreshDataDefinedProperty() ) );
connect( &mComposition->atlasComposition(), SIGNAL( coverageLayerChanged( QgsVectorLayer* ) ), this, SLOT( refreshDataDefinedProperty() ) );
connect( &mComposition->atlasComposition(), SIGNAL( featureChanged( QgsFeature* ) ), this, SLOT( refreshDataDefinedProperty() ) );
//also, refreshing composition triggers a recalculation of data defined properties
connect( mComposition, SIGNAL( refreshItemsTriggered() ), this, SLOT( refreshDataDefinedProperty() ) );
//toggling atlas or changing coverage layer requires data defined expressions to be reprepared
connect( &mComposition->atlasComposition(), SIGNAL( toggled( bool ) ), this, SLOT( prepareDataDefinedExpressions() ) );
connect( &mComposition->atlasComposition(), SIGNAL( coverageLayerChanged( QgsVectorLayer* ) ), this, SLOT( prepareDataDefinedExpressions() ) );
}
}
void QgsComposerItem::setExcludeFromExports( const bool exclude )
{
mExcludeFromExports = exclude;
refreshDataDefinedProperty( QgsComposerObject::ExcludeFromExports );
}
