void QgsMapToolCapture::canvasMoveEvent( QMouseEvent * e )
{
QgsPoint mapPoint;
QList<QgsSnappingResult> snapResults;
if ( mSnapper.snapToBackgroundLayers( e->pos(), snapResults ) == 0 )
{
if ( snapResults.isEmpty() )
{
delete mSnappingMarker;
mSnappingMarker = 0;
}
else
{
if ( !mSnappingMarker )
{
mSnappingMarker = new QgsVertexMarker( mCanvas );
mSnappingMarker->setIconType( QgsVertexMarker::ICON_CROSS );
mSnappingMarker->setColor( Qt::magenta );
mSnappingMarker->setPenWidth( 3 );
}
mSnappingMarker->setCenter( snapResults.constBegin()->snappedVertex );
}
if ( mCaptureMode != CapturePoint && mTempRubberBand && mCapturing )
{
mapPoint = snapPointFromResults( snapResults, e->pos() );
mTempRubberBand->movePoint( mapPoint );
}
}
} // mouseMoveEvent
int QgsMapToolCapture::nextPoint( const QPoint &p, QgsPoint &layerPoint, QgsPoint &mapPoint )
{
QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( mCanvas->currentLayer() );
if ( !vlayer )
{
QgsDebugMsg( "no vector layer" );
return 1;
}
QgsPoint digitisedPoint;
try
{
digitisedPoint = toLayerCoordinates( vlayer, p );
}
catch ( QgsCsException &cse )
{
Q_UNUSED( cse );
QgsDebugMsg( "transformation to layer coordinate failed" );
return 2;
}
QList<QgsSnappingResult> snapResults;
if ( mSnapper.snapToBackgroundLayers( p, snapResults ) == 0 )
{
mapPoint = snapPointFromResults( snapResults, p );
try
{
layerPoint = toLayerCoordinates( vlayer, mapPoint ); //transform snapped point back to layer crs
}
catch ( QgsCsException &cse )
{
Q_UNUSED( cse );
QgsDebugMsg( "transformation to layer coordinate failed" );
return 2;
}
}
return 0;
}
void QgsMapToolAddFeature::canvasReleaseEvent( QMouseEvent * e )
{
QgsDebugMsg( "entered." );
QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( mCanvas->currentLayer() );
if ( !vlayer )
{
notifyNotVectorLayer();
return;
}
QGis::WkbType layerWKBType = vlayer->wkbType();
QgsVectorDataProvider* provider = vlayer->dataProvider();
if ( !( provider->capabilities() & QgsVectorDataProvider::AddFeatures ) )
{
QMessageBox::information( 0, tr( "Layer cannot be added to" ),
tr( "The data provider for this layer does not support the addition of features." ) );
return;
}
if ( !vlayer->isEditable() )
{
notifyNotEditableLayer();
return;
}
// POINT CAPTURING
if ( mode() == CapturePoint )
{
//check we only use this tool for point/multipoint layers
if ( vlayer->geometryType() != QGis::Point )
{
QMessageBox::information( 0, tr( "Wrong editing tool" ),
tr( "Cannot apply the 'capture point' tool on this vector layer" ) );
return;
}
QgsPoint idPoint; //point in map coordinates
QList<QgsSnappingResult> snapResults;
QgsPoint savePoint; //point in layer coordinates
if ( mSnapper.snapToBackgroundLayers( e->pos(), snapResults ) == 0 )
{
idPoint = snapPointFromResults( snapResults, e->pos() );
try
{
savePoint = toLayerCoordinates( vlayer, idPoint );
QgsDebugMsg( "savePoint = " + savePoint.toString() );
}
catch ( QgsCsException &cse )
{
Q_UNUSED( cse );
QMessageBox::information( 0, tr( "Coordinate transform error" ),
tr( "Cannot transform the point to the layers coordinate system" ) );
return;
}
}
//only do the rest for provider with feature addition support
//note that for the grass provider, this will return false since
//grass provider has its own mechanism of feature addition
if ( provider->capabilities() & QgsVectorDataProvider::AddFeatures )
{
QgsFeature* f = new QgsFeature( 0, "WKBPoint" );
QgsGeometry *g = 0;
if ( layerWKBType == QGis::WKBPoint || layerWKBType == QGis::WKBPoint25D )
{
g = QgsGeometry::fromPoint( savePoint );
}
else if ( layerWKBType == QGis::WKBMultiPoint || layerWKBType == QGis::WKBMultiPoint25D )
{
g = QgsGeometry::fromMultiPoint( QgsMultiPoint() << savePoint );
}
f->setGeometry( g );
vlayer->beginEditCommand( tr( "Feature added" ) );
if ( addFeature( vlayer, f ) )
{
vlayer->endEditCommand();
}
else
{
delete f;
vlayer->destroyEditCommand();
}
mCanvas->refresh();
}
}
else if ( mode() == CaptureLine || mode() == CapturePolygon )
{
//check we only use the line tool for line/multiline layers
if ( mode() == CaptureLine && vlayer->geometryType() != QGis::Line )
{
QMessageBox::information( 0, tr( "Wrong editing tool" ),
tr( "Cannot apply the 'capture line' tool on this vector layer" ) );
return;
}
//check we only use the polygon tool for polygon/multipolygon layers
if ( mode() == CapturePolygon && vlayer->geometryType() != QGis::Polygon )
{
QMessageBox::information( 0, tr( "Wrong editing tool" ),
tr( "Cannot apply the 'capture polygon' tool on this vector layer" ) );
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 )
{
// End of string
//lines: bail out if there are not at least two vertices
if ( mode() == CaptureLine && size() < 2 )
{
stopCapturing();
return;
}
//polygons: bail out if there are not at least two vertices
if ( mode() == CapturePolygon && size() < 3 )
{
stopCapturing();
return;
}
//create QgsFeature with wkb representation
QgsFeature* f = new QgsFeature( 0, "WKBLineString" );
QgsGeometry *g;
if ( mode() == CaptureLine )
{
if ( layerWKBType == QGis::WKBLineString || layerWKBType == QGis::WKBLineString25D )
{
g = QgsGeometry::fromPolyline( points().toVector() );
}
else if ( layerWKBType == QGis::WKBMultiLineString || layerWKBType == QGis::WKBMultiLineString25D )
{
g = QgsGeometry::fromMultiPolyline( QgsMultiPolyline() << points().toVector() );
}
else
{
QMessageBox::critical( 0, tr( "Error" ), tr( "Cannot add feature. Unknown WKB type" ) );
stopCapturing();
return; //unknown wkbtype
}
f->setGeometry( g );
}
else // polygon
{
if ( layerWKBType == QGis::WKBPolygon || layerWKBType == QGis::WKBPolygon25D )
{
g = QgsGeometry::fromPolygon( QgsPolygon() << points().toVector() );
}
else if ( layerWKBType == QGis::WKBMultiPolygon || layerWKBType == QGis::WKBMultiPolygon25D )
{
g = QgsGeometry::fromMultiPolygon( QgsMultiPolygon() << ( QgsPolygon() << points().toVector() ) );
}
else
{
QMessageBox::critical( 0, tr( "Error" ), tr( "Cannot add feature. Unknown WKB type" ) );
stopCapturing();
return; //unknown wkbtype
}
if ( !g )
{
stopCapturing();
delete f;
return; // invalid geometry; one possibility is from duplicate points
}
f->setGeometry( g );
int avoidIntersectionsReturn = f->geometry()->avoidIntersections();
if ( avoidIntersectionsReturn == 1 )
{
//not a polygon type. Impossible to get there
}
#if 0
else if ( avoidIntersectionsReturn == 2 ) //MH120131: disable this error message until there is a better way to cope with the single type / multi type problem
{
//bail out...
QMessageBox::critical( 0, tr( "Error" ), tr( "The feature could not be added because removing the polygon intersections would change the geometry type" ) );
delete f;
stopCapturing();
return;
}
#endif
else if ( avoidIntersectionsReturn == 3 )
{
QMessageBox::critical( 0, tr( "Error" ), tr( "An error was reported during intersection removal" ) );
}
}
vlayer->beginEditCommand( tr( "Feature added" ) );
if ( addFeature( vlayer, f ) )
{
//add points to other features to keep topology up-to-date
int topologicalEditing = QgsProject::instance()->readNumEntry( "Digitizing", "/TopologicalEditing", 0 );
if ( topologicalEditing )
{
vlayer->addTopologicalPoints( f->geometry() );
}
vlayer->endEditCommand();
}
else
{
delete f;
vlayer->destroyEditCommand();
}
stopCapturing();
}
}
}
void QgsMapToolNodeTool::canvasMoveEvent( QMouseEvent * e )
{
if ( !mSelectedFeature || !mClicked )
return;
QgsVectorLayer* vlayer = mSelectedFeature->vlayer();
Q_ASSERT( vlayer );
mSelectAnother = false;
if ( mMoving )
{
// create rubberband, if none exists
if ( mRubberBands.empty() )
{
if ( mIsPoint )
{
QList<QgsVertexEntry*> &vertexMap = mSelectedFeature->vertexMap();
for ( int i = 0; i < vertexMap.size(); i++ )
{
if ( vertexMap[i]->isSelected() )
{
QgsRubberBand* rb = createRubberBandMarker( vertexMap[i]->point(), vlayer );
mRubberBands.append( rb );
}
}
}
createMovingRubberBands();
QList<QgsSnappingResult> snapResults;
QgsPoint posMapCoord = snapPointFromResults( snapResults, e->pos() );
mPosMapCoordBackup = posMapCoord;
}
else
{
// move rubberband
QList<QgsSnappingResult> snapResults;
mSnapper.snapToBackgroundLayers( e->pos(), snapResults, QList<QgsPoint>() << mClosestMapVertex );
// get correct coordinates to move to
QgsPoint posMapCoord = snapPointFromResults( snapResults, e->pos() );
QgsPoint pressMapCoords;
if ( snapResults.size() > 0 )
{
pressMapCoords = mClosestMapVertex;
}
else
{
pressMapCoords = toMapCoordinates( mPressCoordinates );
}
QgsVector offset = posMapCoord - pressMapCoords;
// handle points
if ( mIsPoint )
{
for ( int i = 0; i < mRubberBands.size(); i++ )
{
mRubberBands[i]->setTranslationOffset( offset.x(), offset.y() );
}
return;
}
// move points
QList<QgsVertexEntry*> &vertexMap = mSelectedFeature->vertexMap();
for ( int i = 0; i < vertexMap.size(); i++ )
{
if ( !vertexMap[i]->isSelected() )
continue;
QgsPoint p = toMapCoordinates( vlayer, vertexMap[i]->point() ) + offset;
mRubberBands[vertexMap[i]->rubberBandNr()]->movePoint( vertexMap[i]->rubberBandIndex(), p );
if ( vertexMap[i]->rubberBandIndex() == 0 )
{
mRubberBands[vertexMap[i]->rubberBandNr()]->movePoint( 0, p );
}
}
// topological editing
offset = posMapCoord - mPosMapCoordBackup;
for ( int i = 0; i < mTopologyRubberBand.size(); i++ )
{
for ( int pointIndex = 0; pointIndex < mTopologyRubberBand[i]->numberOfVertices(); pointIndex++ )
{
if ( mTopologyRubberBandVertexes[i]->contains( pointIndex ) )
{
const QgsPoint* point = mTopologyRubberBand[i]->getPoint( 0, pointIndex );
if ( point == 0 )
{
break;
}
mTopologyRubberBand[i]->movePoint( pointIndex, *point + offset );
}
}
}
mPosMapCoordBackup = posMapCoord;
}
}
else
{
if ( !mSelectionRectangle )
{
mSelectionRectangle = true;
mSelectionRubberBand = new QRubberBand( QRubberBand::Rectangle, mCanvas );
mRect = new QRect();
mRect->setTopLeft( mPressCoordinates );
}
mRect->setBottomRight( e->pos() );
QRect normalizedRect = mRect->normalized();
mSelectionRubberBand->setGeometry( normalizedRect );
mSelectionRubberBand->show();
}
}
{
if ( vertexEntry->isSelected() )
mMoveVertices[mSelectedFeature->featureId()].append( qMakePair( vertexEntry->vertexId(), toMapCoordinates( vlayer, vertexEntry->point() ) ) );
}
if ( QgsProject::instance()->readNumEntry( "Digitizing", "/TopologicalEditing", 0 ) )
{
createTopologyRubberBands();
}
}
else
{
// move rubberband
QList<QgsSnappingResult> snapResults;
mSnapper.snapToBackgroundLayers( e->pos(), snapResults, QList<QgsPoint>() << mClosestMapVertex );
QgsPoint curPos = snapPointFromResults( snapResults, e->pos() );
QgsPoint pressPos = snapResults.size() > 0 ? mClosestMapVertex : toMapCoordinates( mPressCoordinates );
double deltaX = curPos.x() - pressPos.x();
double deltaY = curPos.y() - pressPos.y();
foreach ( const QgsFeatureId& fid, mMoveRubberBands.keys() )
{
typedef QPair<QgsVertexId, QgsPointV2> MoveVertex;
foreach ( const MoveVertex& pair, mMoveVertices[fid] )
{
QgsPointV2 newPos( pair.second.x() + deltaX, pair.second.y() + deltaY );
mMoveRubberBands.value( fid )->moveVertex( pair.first, newPos );
}
}
}
}
void QgsMapToolNodeTool::canvasReleaseEvent( QMouseEvent * e )
{
if ( !mSelectedFeature )
return;
removeRubberBands();
QgsVectorLayer *vlayer = mSelectedFeature->vlayer();
Q_ASSERT( vlayer );
mClicked = false;
mSelectionRectangle = false;
if ( mSelectionRubberBand )
{
mSelectionRubberBand->close();
delete mSelectionRubberBand;
mSelectionRubberBand = 0;
}
if ( mPressCoordinates == e->pos() )
{
if ( mSelectAnother )
{
// select another feature
mSelectedFeature->setSelectedFeature( mAnother, vlayer, mCanvas );
mIsPoint = vlayer->geometryType() == QGis::Point;
mSelectAnother = false;
}
}
else
{
if ( mMoving )
{
mMoving = false;
QList<QgsSnappingResult> snapResults;
mSnapper.snapToBackgroundLayers( e->pos(), snapResults, QList<QgsPoint>() << mClosestMapVertex );
QgsPoint releaseLayerCoords = toLayerCoordinates( vlayer, snapPointFromResults( snapResults, e->pos() ) );
QgsPoint pressLayerCoords;
if ( snapResults.size() > 0 )
{
pressLayerCoords = toLayerCoordinates( vlayer, mClosestMapVertex );
int topologicalEditing = QgsProject::instance()->readNumEntry( "Digitizing", "/TopologicalEditing", 0 );
if ( topologicalEditing )
{
insertSegmentVerticesForSnap( snapResults, vlayer );
}
}
else
{
pressLayerCoords = toLayerCoordinates( vlayer, mPressCoordinates );
}
mSelectedFeature->moveSelectedVertexes( releaseLayerCoords - pressLayerCoords );
mCanvas->refresh();
}
else // selecting vertexes by rubberband
{
// coordinates has to be coordinates from layer not canvas
QgsRectangle r( toLayerCoordinates( vlayer, mPressCoordinates ),
toLayerCoordinates( vlayer, e->pos() ) );
QList<QgsVertexEntry*> &vertexMap = mSelectedFeature->vertexMap();
if ( !mCtrl )
{
mSelectedFeature->deselectAllVertexes();
}
for ( int i = 0; i < vertexMap.size(); i++ )
{
if ( r.contains( vertexMap[i]->point() ) )
{
// inverting selection is enough because all were deselected if ctrl is not pressed
mSelectedFeature->invertVertexSelection( i, false );
}
}
}
}
mMoving = false;
if ( mDeselectOnRelease != -1 )
{
if ( mCtrl )
{
mSelectedFeature->invertVertexSelection( mDeselectOnRelease );
}
else
{
mSelectedFeature->deselectAllVertexes();
mSelectedFeature->selectVertex( mDeselectOnRelease );
}
mDeselectOnRelease = -1;
}
mRecentSnappingResults.clear();
mExcludePoint.clear();
}