void QgsMapToolShowHideLabels::showHideLabels( QMouseEvent *e )
{
QgsMapLayer *layer = mCanvas->currentLayer();
QgsVectorLayer *vlayer = dynamic_cast<QgsVectorLayer *>( layer );
if ( !vlayer )
return;
bool doHide = e->modifiers() & Qt::ShiftModifier;
QString editTxt = doHide ? tr( "Hid labels" ) : tr( "Showed labels" );
vlayer->beginEditCommand( editTxt );
bool labelChanged = false;
if ( doHide )
{
QList<QgsLabelPosition> positions;
if ( selectedLabelFeatures( vlayer, positions ) )
{
for ( const QgsLabelPosition &pos : qgis::as_const( positions ) )
{
if ( showHide( pos, false ) )
labelChanged = true;
}
}
}
else
{
QgsFeatureIds fids;
if ( selectedFeatures( vlayer, fids ) )
{
for ( const QgsFeatureId &fid : qgis::as_const( fids ) )
{
QgsLabelPosition pos;
pos.featureId = fid;
pos.layerID = vlayer->id();
// we want to show labels...
pos.isDiagram = false;
if ( showHide( pos, true ) )
labelChanged = true;
// ... and diagrams
pos.isDiagram = true;
if ( showHide( pos, true ) )
labelChanged = true;
}
}
}
if ( labelChanged )
{
vlayer->endEditCommand();
vlayer->triggerRepaint();
}
else
{
vlayer->destroyEditCommand();
}
}
void QgsMapToolShowHideLabels::showHideLabels( QMouseEvent * e )
{
if ( !mCanvas || mCanvas->isDrawing() )
{
QgsDebugMsg( "Canvas not ready" );
return;
}
mRender = mCanvas->mapRenderer();
if ( !mRender )
{
QgsDebugMsg( "Failed to acquire map renderer" );
return;
}
QgsMapLayer* layer = mCanvas->currentLayer();
QgsVectorLayer* vlayer = dynamic_cast<QgsVectorLayer*>( layer );
if ( !vlayer )
{
QgsDebugMsg( "Failed to cast label layer to vector layer" );
return;
}
if ( !vlayer->isEditable() )
{
QgsDebugMsg( "Vector layer not editable, skipping label" );
return;
}
bool doHide = e->modifiers() & Qt::ShiftModifier ? true : false;
QgsFeatureIds selectedFeatIds;
if ( !doHide )
{
QgsDebugMsg( "Showing labels operation" );
if ( !selectedFeatures( vlayer, selectedFeatIds ) )
{
return;
}
}
else
{
QgsDebugMsg( "Hiding labels operation" );
if ( !selectedLabelFeatures( vlayer, selectedFeatIds ) )
{
return;
}
}
QgsDebugMsg( "Number of selected labels or features: " + QString::number( selectedFeatIds.size() ) );
bool labelChanged = false;
foreach ( const QgsFeatureId &fid, selectedFeatIds )
{
if ( showHideLabel( vlayer, fid, doHide ) )
{
// TODO: highlight features (maybe with QTimer?)
labelChanged = true;
}
}
if ( labelChanged )
{
mCanvas->refresh();
}
}
void QgsMapToolShowHideLabels::showHideLabels( QMouseEvent * e )
{
QgsMapLayer* layer = mCanvas->currentLayer();
QgsVectorLayer* vlayer = dynamic_cast<QgsVectorLayer*>( layer );
if ( !vlayer )
{
QgsDebugMsg( "Failed to cast label layer to vector layer" );
return;
}
if ( !vlayer->isEditable() )
{
QgsDebugMsg( "Vector layer not editable, skipping label" );
return;
}
bool doHide = e->modifiers() & Qt::ShiftModifier ? true : false;
QgsFeatureIds selectedFeatIds;
if ( !doHide )
{
QgsDebugMsg( "Showing labels operation" );
if ( !selectedFeatures( vlayer, selectedFeatIds ) )
{
return;
}
}
else
{
QgsDebugMsg( "Hiding labels operation" );
if ( !selectedLabelFeatures( vlayer, selectedFeatIds ) )
{
return;
}
}
QgsDebugMsg( "Number of selected labels or features: " + QString::number( selectedFeatIds.size() ) );
if ( selectedFeatIds.isEmpty() )
{
return;
}
bool labelChanged = false;
QString editTxt = doHide ? tr( "Hid labels" ) : tr( "Showed labels" );
vlayer->beginEditCommand( editTxt );
Q_FOREACH ( const QgsFeatureId &fid, selectedFeatIds )
{
if ( showHideLabel( vlayer, fid, doHide ) )
{
// TODO: highlight features (maybe with QTimer?)
labelChanged = true;
}
}
if ( labelChanged )
{
vlayer->endEditCommand();
mCanvas->refresh();
}
else
{
vlayer->destroyEditCommand();
}
}
