bool QgsMapToolShowHideLabels::showHide( const QgsLabelPosition &pos, bool show )
{
LabelDetails details = LabelDetails( pos );
if ( !details.valid )
return false;
QgsVectorLayer *vlayer = details.layer;
if ( !vlayer )
return false;
int showCol = -1;
if ( pos.isDiagram )
{
if ( !diagramCanShowHide( vlayer, showCol ) )
{
QgsDiagramIndexes indexes;
createAuxiliaryFields( details, indexes );
showCol = indexes[ QgsDiagramLayerSettings::Show ];
}
}
else
{
if ( !labelCanShowHide( vlayer, showCol ) )
{
QgsPalIndexes indexes;
createAuxiliaryFields( details, indexes );
showCol = indexes[ QgsPalLayerSettings::Show ];
}
}
if ( showCol >= 0 )
{
int showVal = show ? 1 : 0;
vlayer->changeAttributeValue( pos.featureId, showCol, showVal );
return true;
}
return false;
}
bool QgsMapToolLabel::createAuxiliaryFields( QgsDiagramIndexes &indexes )
{
return createAuxiliaryFields( mCurrentLabel, indexes );
}
void QgsMapToolMoveLabel::canvasPressEvent( QgsMapMouseEvent *e )
{
deleteRubberBands();
QgsLabelPosition labelPos;
if ( !labelAtPosition( e, labelPos ) )
{
mCurrentLabel = LabelDetails();
return;
}
mCurrentLabel = LabelDetails( labelPos );
QgsVectorLayer *vlayer = mCurrentLabel.layer;
if ( !vlayer )
{
return;
}
int xCol = -1, yCol = -1;
if ( !mCurrentLabel.pos.isDiagram && !labelMoveable( vlayer, mCurrentLabel.settings, xCol, yCol ) )
{
QgsPalIndexes indexes;
if ( createAuxiliaryFields( indexes ) )
return;
if ( !labelMoveable( vlayer, mCurrentLabel.settings, xCol, yCol ) )
return;
xCol = indexes[ QgsPalLayerSettings::PositionX ];
yCol = indexes[ QgsPalLayerSettings::PositionY ];
}
else if ( mCurrentLabel.pos.isDiagram && !diagramMoveable( vlayer, xCol, yCol ) )
{
QgsDiagramIndexes indexes;
if ( createAuxiliaryFields( indexes ) )
return;
if ( !diagramMoveable( vlayer, xCol, yCol ) )
return;
xCol = indexes[ QgsDiagramLayerSettings::PositionX ];
yCol = indexes[ QgsDiagramLayerSettings::PositionY ];
}
if ( xCol >= 0 && yCol >= 0 )
{
mStartPointMapCoords = toMapCoordinates( e->pos() );
QgsPointXY referencePoint;
if ( !currentLabelRotationPoint( referencePoint, !currentLabelPreserveRotation(), false ) )
{
referencePoint.setX( mCurrentLabel.pos.labelRect.xMinimum() );
referencePoint.setY( mCurrentLabel.pos.labelRect.yMinimum() );
}
mClickOffsetX = mStartPointMapCoords.x() - referencePoint.x();
mClickOffsetY = mStartPointMapCoords.y() - referencePoint.y();
createRubberBands();
}
}
