QgsPoint QgsMapToolCapture::mapPoint( const QgsPointXY &point ) const
{
QgsPoint newPoint( QgsWkbTypes::Point, point.x(), point.y() );
// get current layer
QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( mCanvas->currentLayer() );
if ( !vlayer )
{
return newPoint;
}
// convert to the corresponding type for a full ZM support
const QgsWkbTypes::Type type = vlayer->wkbType();
if ( QgsWkbTypes::hasZ( type ) && !QgsWkbTypes::hasM( type ) )
{
newPoint.convertTo( QgsWkbTypes::PointZ );
}
else if ( !QgsWkbTypes::hasZ( type ) && QgsWkbTypes::hasM( type ) )
{
newPoint.convertTo( QgsWkbTypes::PointM );
}
else if ( QgsWkbTypes::hasZ( type ) && QgsWkbTypes::hasM( type ) )
{
newPoint.convertTo( QgsWkbTypes::PointZM );
}
// set z value if necessary
if ( QgsWkbTypes::hasZ( newPoint.wkbType() ) )
{
newPoint.setZ( defaultZValue() );
}
return newPoint;
}
void QgsMapToolAddRegularPolygon::deactivate()
{
if ( !mParentTool || mRegularPolygon.isEmpty() )
{
return;
}
mParentTool->clearCurve( );
// keep z value from the first snapped point
std::unique_ptr<QgsLineString> ls( mRegularPolygon.toLineString() );
for ( const QgsPoint point : qgis::as_const( mPoints ) )
{
if ( QgsWkbTypes::hasZ( point.wkbType() ) &&
point.z() != defaultZValue() )
{
ls->dropZValue();
ls->addZValue( point.z() );
break;
}
}
mParentTool->addCurve( ls.release() );
clean();
QgsMapToolCapture::deactivate();
}
int QgsMapToolCapture::nextPoint( const QgsPoint &mapPoint, QgsPoint &layerPoint )
{
QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( mCanvas->currentLayer() );
if ( !vlayer )
{
QgsDebugMsg( QStringLiteral( "no vector layer" ) );
return 1;
}
try
{
QgsPointXY mapP( mapPoint.x(), mapPoint.y() ); //#spellok
layerPoint = QgsPoint( toLayerCoordinates( vlayer, mapP ) ); //transform snapped point back to layer crs //#spellok
if ( QgsWkbTypes::hasZ( vlayer->wkbType() ) )
layerPoint.addZValue( defaultZValue() );
if ( QgsWkbTypes::hasM( vlayer->wkbType() ) )
layerPoint.addMValue( 0.0 );
}
catch ( QgsCsException &cse )
{
Q_UNUSED( cse )
QgsDebugMsg( QStringLiteral( "transformation to layer coordinate failed" ) );
return 2;
}
return 0;
}
void QgsMapToolDigitizeFeature::cadCanvasReleaseEvent( QgsMapMouseEvent *e )
{
QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( mLayer );
if ( !vlayer )
//if no given layer take the current from canvas
vlayer = currentVectorLayer();
if ( !vlayer )
{
notifyNotVectorLayer();
return;
}
QgsWkbTypes::Type layerWKBType = vlayer->wkbType();
QgsVectorDataProvider *provider = vlayer->dataProvider();
if ( !( provider->capabilities() & QgsVectorDataProvider::AddFeatures ) )
{
emit messageEmitted( tr( "The data provider for this layer does not support the addition of features." ), Qgis::Warning );
return;
}
if ( !vlayer->isEditable() )
{
notifyNotEditableLayer();
return;
}
// POINT CAPTURING
if ( mode() == CapturePoint )
{
if ( e->button() != Qt::LeftButton )
return;
//check we only use this tool for point/multipoint layers
if ( vlayer->geometryType() != QgsWkbTypes::PointGeometry && mCheckGeometryType )
{
emit messageEmitted( tr( "Wrong editing tool, cannot apply the 'capture point' tool on this vector layer" ), Qgis::Warning );
return;
}
QgsPointXY savePoint; //point in layer coordinates
try
{
QgsPoint fetchPoint;
int res;
res = fetchLayerPoint( e->mapPointMatch(), fetchPoint );
if ( res == 0 )
{
savePoint = QgsPointXY( fetchPoint.x(), fetchPoint.y() );
}
else
{
savePoint = toLayerCoordinates( vlayer, e->mapPoint() );
}
QgsDebugMsg( "savePoint = " + savePoint.toString() );
}
catch ( QgsCsException &cse )
{
Q_UNUSED( cse );
emit messageEmitted( tr( "Cannot transform the point to the layers coordinate system" ), Qgis::Warning );
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( vlayer->fields(), 0 );
QgsGeometry g;
if ( layerWKBType == QgsWkbTypes::Point )
{
g = QgsGeometry::fromPointXY( savePoint );
}
else if ( !QgsWkbTypes::isMultiType( layerWKBType ) && QgsWkbTypes::hasZ( layerWKBType ) )
{
g = QgsGeometry( new QgsPoint( QgsWkbTypes::PointZ, savePoint.x(), savePoint.y(), defaultZValue() ) );
}
else if ( QgsWkbTypes::isMultiType( layerWKBType ) && !QgsWkbTypes::hasZ( layerWKBType ) )
{
g = QgsGeometry::fromMultiPointXY( QgsMultiPointXY() << savePoint );
}
else if ( QgsWkbTypes::isMultiType( layerWKBType ) && QgsWkbTypes::hasZ( layerWKBType ) )
{
QgsMultiPoint *mp = new QgsMultiPoint();
mp->addGeometry( new QgsPoint( QgsWkbTypes::PointZ, savePoint.x(), savePoint.y(), defaultZValue() ) );
g = QgsGeometry( mp );
}
else
{
// if layer supports more types (mCheckGeometryType is false)
g = QgsGeometry::fromPointXY( savePoint );
}
if ( QgsWkbTypes::hasM( layerWKBType ) )
{
g.get()->addMValue();
}
f.setGeometry( g );
f.setValid( true );
digitized( f );
// we are done with digitizing for now so instruct advanced digitizing dock to reset its CAD points
cadDockWidget()->clearPoints();
}
}
// LINE AND POLYGON CAPTURING
else if ( mode() == CaptureLine || mode() == CapturePolygon )
{
//check we only use the line tool for line/multiline layers
if ( mode() == CaptureLine && vlayer->geometryType() != QgsWkbTypes::LineGeometry && mCheckGeometryType )
{
emit messageEmitted( tr( "Wrong editing tool, cannot apply the 'capture line' tool on this vector layer" ), Qgis::Warning );
return;
}
//check we only use the polygon tool for polygon/multipolygon layers
if ( mode() == CapturePolygon && vlayer->geometryType() != QgsWkbTypes::PolygonGeometry && mCheckGeometryType )
{
emit messageEmitted( tr( "Wrong editing tool, cannot apply the 'capture polygon' tool on this vector layer" ), Qgis::Warning );
return;
}
//add point to list and to rubber band
if ( e->button() == Qt::LeftButton )
{
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
emit messageEmitted( tr( "Cannot transform the point to the layers coordinate system" ), Qgis::Warning );
return;
}
startCapturing();
}
else if ( e->button() == Qt::RightButton )
{
// End of string
deleteTempRubberBand();
//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;
}
if ( mode() == CapturePolygon )
{
closePolygon();
}
//create QgsFeature with wkb representation
std::unique_ptr< QgsFeature > f( new QgsFeature( vlayer->fields(), 0 ) );
//does compoundcurve contain circular strings?
//does provider support circular strings?
bool hasCurvedSegments = captureCurve()->hasCurvedSegments();
bool providerSupportsCurvedSegments = vlayer->dataProvider()->capabilities() & QgsVectorDataProvider::CircularGeometries;
QList<QgsPointLocator::Match> snappingMatchesList;
QgsCurve *curveToAdd = nullptr;
if ( hasCurvedSegments && providerSupportsCurvedSegments )
{
curveToAdd = captureCurve()->clone();
}
else
{
curveToAdd = captureCurve()->curveToLine();
snappingMatchesList = snappingMatches();
}
if ( mode() == CaptureLine )
{
QgsGeometry g( curveToAdd );
f->setGeometry( g );
}
else
{
QgsCurvePolygon *poly = nullptr;
if ( hasCurvedSegments && providerSupportsCurvedSegments )
{
poly = new QgsCurvePolygon();
}
else
{
poly = new QgsPolygon();
}
poly->setExteriorRing( curveToAdd );
QgsGeometry g( poly );
f->setGeometry( g );
QgsGeometry featGeom = f->geometry();
int avoidIntersectionsReturn = featGeom.avoidIntersections( QgsProject::instance()->avoidIntersectionsLayers() );
f->setGeometry( featGeom );
if ( avoidIntersectionsReturn == 1 )
{
//not a polygon type. Impossible to get there
}
if ( f->geometry().isEmpty() ) //avoid intersection might have removed the whole geometry
{
emit messageEmitted( tr( "The feature cannot be added because it's geometry collapsed due to intersection avoidance" ), Qgis::Critical );
stopCapturing();
return;
}
}
f->setValid( true );
digitized( *f );
stopCapturing();
}
}
}
void QgsMapToolReshape::reshape( QgsVectorLayer *vlayer )
{
QgsPointXY firstPoint = points().at( 0 );
QgsRectangle bbox( firstPoint.x(), firstPoint.y(), firstPoint.x(), firstPoint.y() );
for ( int i = 1; i < size(); ++i )
{
bbox.combineExtentWith( points().at( i ).x(), points().at( i ).y() );
}
QgsLineString reshapeLineString( points() );
if ( QgsWkbTypes::hasZ( vlayer->wkbType() ) )
reshapeLineString.addZValue( defaultZValue() );
//query all the features that intersect bounding box of capture line
QgsFeatureIterator fit = vlayer->getFeatures( QgsFeatureRequest().setFilterRect( bbox ).setSubsetOfAttributes( QgsAttributeList() ) );
QgsFeature f;
int reshapeReturn;
bool reshapeDone = false;
bool isBinding = isBindingLine( vlayer, bbox );
vlayer->beginEditCommand( tr( "Reshape" ) );
while ( fit.nextFeature( f ) )
{
//query geometry
//call geometry->reshape(mCaptureList)
//register changed geometry in vector layer
QgsGeometry geom = f.geometry();
if ( !geom.isNull() )
{
// in case of a binding line, we just want to update the line from
// the starting point and not both side
if ( isBinding && !geom.asPolyline().contains( points().first() ) )
continue;
reshapeReturn = geom.reshapeGeometry( reshapeLineString );
if ( reshapeReturn == 0 )
{
//avoid intersections on polygon layers
if ( vlayer->geometryType() == QgsWkbTypes::PolygonGeometry )
{
//ignore all current layer features as they should be reshaped too
QHash<QgsVectorLayer *, QSet<QgsFeatureId> > ignoreFeatures;
ignoreFeatures.insert( vlayer, vlayer->allFeatureIds() );
if ( geom.avoidIntersections( QgsProject::instance()->avoidIntersectionsLayers(), ignoreFeatures ) != 0 )
{
emit messageEmitted( tr( "An error was reported during intersection removal" ), Qgis::Critical );
vlayer->destroyEditCommand();
stopCapturing();
return;
}
if ( geom.isEmpty() ) //intersection removal might have removed the whole geometry
{
emit messageEmitted( tr( "The feature cannot be reshaped because the resulting geometry is empty" ), Qgis::Critical );
vlayer->destroyEditCommand();
return;
}
}
vlayer->changeGeometry( f.id(), geom );
reshapeDone = true;
}
}
}
if ( reshapeDone )
{
vlayer->endEditCommand();
}
else
{
vlayer->destroyEditCommand();
}
}
