void QgsMapToolSplitFeatures::cadCanvasReleaseEvent( QgsMapMouseEvent * e )
{
//check if we operate on a vector layer
QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( mCanvas->currentLayer() );
if ( !vlayer )
{
notifyNotVectorLayer();
return;
}
if ( !vlayer->isEditable() )
{
notifyNotEditableLayer();
return;
}
bool split = false;
//add point to list and to rubber band
if ( e->button() == Qt::LeftButton )
{
//If we snap the first point on a vertex of a line layer, we directly split the feature at this point
if ( vlayer->geometryType() == QgsWkbTypes::LineGeometry && points().isEmpty() )
{
QgsPointLocator::Match m = mCanvas->snappingUtils()->snapToCurrentLayer( e->pos(), QgsPointLocator::Vertex );
if ( m.isValid() )
{
split = true;
}
}
int error = addVertex( e->mapPoint(), e->mapPointMatch() );
if ( error == 1 )
{
//current layer is not a vector layer
return;
}
else if ( error == 2 )
{
//problem with coordinate transformation
QgisApp::instance()->messageBar()->pushMessage(
tr( "Coordinate transform error" ),
tr( "Cannot transform the point to the layers coordinate system" ),
QgsMessageBar::INFO,
QgisApp::instance()->messageTimeout() );
return;
}
startCapturing();
}
else if ( e->button() == Qt::RightButton )
{
split = true;
}
if ( split )
{
deleteTempRubberBand();
//bring up dialog if a split was not possible (polygon) or only done once (line)
int topologicalEditing = QgsProject::instance()->topologicalEditing();
vlayer->beginEditCommand( tr( "Features split" ) );
int returnCode = vlayer->splitFeatures( points(), topologicalEditing );
vlayer->endEditCommand();
if ( returnCode == 4 )
{
QgisApp::instance()->messageBar()->pushMessage(
tr( "No features were split" ),
tr( "If there are selected features, the split tool only applies to those. If you would like to split all features under the split line, clear the selection." ),
QgsMessageBar::WARNING,
QgisApp::instance()->messageTimeout() );
}
else if ( returnCode == 3 )
{
QgisApp::instance()->messageBar()->pushMessage(
tr( "No feature split done" ),
tr( "Cut edges detected. Make sure the line splits features into multiple parts." ),
QgsMessageBar::WARNING,
QgisApp::instance()->messageTimeout() );
}
else if ( returnCode == 7 )
{
QgisApp::instance()->messageBar()->pushMessage(
tr( "No feature split done" ),
tr( "The geometry is invalid. Please repair before trying to split it." ),
QgsMessageBar::WARNING,
QgisApp::instance()->messageTimeout() );
}
else if ( returnCode != 0 )
{
//several intersections but only one split (most likely line)
QgisApp::instance()->messageBar()->pushMessage(
tr( "No feature split done" ),
tr( "An error occurred during splitting." ),
QgsMessageBar::WARNING,
QgisApp::instance()->messageTimeout() );
}
stopCapturing();
}
}
void OptMapToolSplitLink::canvasReleaseEvent( QMouseEvent * e )
{
//check if we operate on a vector layer
QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( mCanvas->currentLayer() );
if ( !vlayer )
{
QMessageBox::information( 0, tr( "Not a vector layer" ),
tr( "The current layer is not a vector layer" ) );
return;
}
if ( !vlayer->isEditable() )
{
QMessageBox::information( 0, tr( "Layer not editable" ),
tr( "Cannot edit the vector layer. Use 'Toggle Editing' to make it editable." )
);
return;
}
//add point to list and to rubber band
int error = addVertex( e->pos() );
if ( error == 1 )
{
//current layer is not a vector layer
return;
}
else if ( error == 2 )
{
//problem with coordinate transformation
QMessageBox::information( 0, tr( "Coordinate transform error" ),
tr( "Cannot transform the point to the layers coordinate system" ) );
return;
}
if ( e->button() == Qt::LeftButton )
{
startCapturing();
}
else if ( e->button() == Qt::RightButton )
{
//bring up dialog if a split was not possible (polygon) or only done once (line)
int topologicalEditing = QgsProject::instance()->readNumEntry( "Digitizing", "/TopologicalEditing", 0 );
vlayer->beginEditCommand( tr( "Features split" ) );
int returnCode = vlayer->splitFeatures( points(), topologicalEditing );
vlayer->endEditCommand();
if ( returnCode == 4 )
{
QMessageBox::warning( 0, tr( "No feature split done" ), tr( "If there are selected features, the split tool only applies to the selected ones. If you like to split all features under the split line, clear the selection" ) );
}
else if ( returnCode == 3 )
{
QMessageBox::warning( 0, tr( "No feature split done" ), tr( "Cut edges detected. Make sure the line splits features into multiple parts." ) );
}
else if ( returnCode == 7 )
{
QMessageBox::warning( 0, tr( "No feature split done" ), tr( "The geometry is invalid. Please repair before trying to split it." ) );
}
else if ( returnCode != 0 )
{
//several intersections but only one split (most likely line)
QMessageBox::warning( 0, tr( "Split error" ), tr( "An error occured during feature splitting" ) );
}
stopCapturing();
}
}