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qgsmaptoolnodetool.cpp
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qgsmaptoolnodetool.cpp
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/***************************************************************************
qgsmaptoolnodetool.cpp - add/move/delete vertex integrated in one tool
---------------------
begin : April 2009
copyright : (C) 2009 by Richard Kostecky
email : csf dot kostej at mail dot com
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "qgsmaptoolnodetool.h"
#include "qgsmapcanvas.h"
#include "qgsproject.h"
#include "qgsrubberband.h"
#include "qgsvectorlayer.h"
#include "qgsvectordataprovider.h"
#include "qgstolerance.h"
#include "qgsgeometry.h"
#include <math.h>
#include <QMouseEvent>
#include <QMessageBox>
QgsRubberBand* QgsMapToolNodeTool::createRubberBandMarker( QgsPoint center, QgsVectorLayer* vlayer )
{
//create rubber band marker for moving points
QgsRubberBand* marker = new QgsRubberBand( mCanvas, true );
marker->setColor( Qt::red );
marker->setWidth( 2 );
double movement = 4;
double s = QgsTolerance::toleranceInMapUnits( movement, vlayer, mCanvas->mapRenderer(), QgsTolerance::Pixels );
QgsPoint pom = toMapCoordinates( vlayer, center );
pom.setX( pom.x() - s );
pom.setY( pom.y() - s );
marker->addPoint( pom );
pom.setX( pom.x() + 2*s );
marker->addPoint( pom );
pom.setY( pom.y() + 2*s );
marker->addPoint( pom );
pom.setX( pom.x() - 2*s );
marker->addPoint( pom );
pom.setY( pom.y() - 2*s );
marker->addPoint( pom );
return marker;
}
QgsMapToolNodeTool::QgsMapToolNodeTool( QgsMapCanvas* canvas ): QgsMapToolVertexEdit( canvas )
{
mSelectionFeature = NULL;
mQRubberBand = NULL;
mSelectAnother = false;
mCtrl = false;
mMoving = true;
mClicked = false;
mChangingGeometry = false;
mIsPoint = false;
//signal handling change of layer structure
connect( canvas, SIGNAL( layersChanged() ), this, SLOT( layersChanged() ) );
//signal when destination srs changed to repaint coordinates
connect( canvas->mapRenderer(), SIGNAL( destinationSrsChanged() ), this, SLOT( coordinatesChanged() ) );
//signal changing of coordinate renderer changed to repaint markers
connect( canvas->mapRenderer(), SIGNAL( hasCrsTransformEnabled( bool ) ), this, SLOT( coordinatesChanged( ) ) );
}
QgsMapToolNodeTool::~QgsMapToolNodeTool()
{
removeRubberBands();
}
void QgsMapToolNodeTool::layersChanged()
{
//deselection of feature when layer has changed
QgsVectorLayer* vlayer = dynamic_cast<QgsVectorLayer*>( mCanvas->currentLayer() );
if ( mSelectionFeature != NULL && mSelectionFeature->vlayer() != vlayer )
{
delete mSelectionFeature;
mSelectionFeature = NULL;
}
}
void QgsMapToolNodeTool::currentLayerChanged( QgsMapLayer* layer )
{
//deselection of feature when current layer has changed
QgsVectorLayer* vlayer = dynamic_cast<QgsVectorLayer*>( layer );
if ( mSelectionFeature != NULL && mSelectionFeature->vlayer() != vlayer )
{
delete mSelectionFeature;
mSelectionFeature = NULL;
}
}
void QgsMapToolNodeTool::featureDeleted( int featureId )
{
//check if deleted feature is the one selected
if ( mSelectionFeature != NULL && featureId == mSelectionFeature->featureId() )
{
//if it's delete selection and disconnect signals since tool is not used anymore
delete mSelectionFeature;
mSelectionFeature = NULL;
disconnect( mCanvas->currentLayer(), SIGNAL( featureDeleted( int ) ) );
disconnect( mCanvas->currentLayer(), SIGNAL( layerModified( bool ) ) );
}
}
void QgsMapToolNodeTool::layerModified( bool onlyGeometry )
{
//handling modification of
QgsFeature feat;
QgsVectorLayer* vlayer = dynamic_cast<QgsVectorLayer*>( mCanvas->currentLayer() );
if ( mSelectionFeature != NULL && !mChangingGeometry && ( vlayer->featureAtId( mSelectionFeature->featureId(), feat, true, false ) ) )
{
try
{
if ( !GEOSEquals( feat.geometry()->asGeos(), mSelectionFeature->feature()->geometry()->asGeos() ) )
{
mSelectionFeature->updateFromFeature();
//throw error
}
}
catch ( ... )
{
//GEOS is throwing exception when polygon is not valid to be able to edit it
//Only possibility to fix this operation sice node tool doesn't allow to strore invalid geometry after editing
mSelectionFeature->updateFromFeature();
//if it does update markers just to be sure of correctness
}
}
}
void QgsMapToolNodeTool::createMovingRubberBands()
{
int topologicalEditing = QgsProject::instance()->readNumEntry( "Digitizing", "/TopologicalEditing", 0 );
QgsVectorLayer* vlayer = dynamic_cast<QgsVectorLayer*>( mCanvas->currentLayer() );
QList<VertexEntry> vertexMap = mSelectionFeature->vertexMap();
QgsGeometry* geometry = mSelectionFeature->feature()->geometry();
int beforeVertex, afterVertex;
int lastRubberBand = 0;
int vertex;
for ( int i = 0; i < vertexMap.size(); i++ )
{
//create rubber band
if ( vertexMap[i].selected && !( vertexMap[i].inRubberBand ) )
{
geometry->adjacentVertices( i, beforeVertex, afterVertex );
vertex = i;
while ( beforeVertex != -1 )
{ //move forward NOTE: end if whole cycle is selected
if ( vertexMap[beforeVertex].selected && beforeVertex != i ) //and take care of cycles
{
vertex = beforeVertex;
geometry->adjacentVertices( vertex, beforeVertex, afterVertex );
}
else
{ //break if cycle is found
break;
}
}
//we have first vertex of moving part
//create rubber band and set default paramaters
QgsRubberBand* rb = new QgsRubberBand( mCanvas, false );
rb->setWidth( 2 );
rb->setColor( Qt::blue );
int index = 0;
if ( beforeVertex != -1 ) //adding first point which is not moving
{
rb->addPoint( toMapCoordinates( mCanvas->currentLayer(), vertexMap[beforeVertex].point ), false );
mSelectionFeature->setRubberBandValues( beforeVertex, true, lastRubberBand, index );
vertexMap[beforeVertex].inRubberBand = true;
index ++;
}
while ( vertex != -1 && vertexMap[vertex].selected && !vertexMap[vertex].inRubberBand )
{
//topology rubber band creation if needed
if ( topologicalEditing )
{
createTopologyRubbedBands( vlayer, vertexMap, vertex );
}
//adding point which will be moved
rb->addPoint( toMapCoordinates( mCanvas->currentLayer(), vertexMap[vertex].point ), false );
//setting values about added vertex
mSelectionFeature->setRubberBandValues( vertex, true, lastRubberBand, index );
vertexMap[vertex].inRubberBand = true;
index ++;
geometry->adjacentVertices( vertex, beforeVertex, vertex );
}
if ( vertex != -1 && !vertexMap[vertex].selected ) //add last point not moving if exists
{
rb->addPoint( toMapCoordinates( mCanvas->currentLayer(), vertexMap[vertex].point ), true );
mSelectionFeature->setRubberBandValues( vertex, true, lastRubberBand, index );
vertexMap[vertex].inRubberBand = true;
index ++;
}
mQgsRubberBands.append( rb );
lastRubberBand ++;
}
}
}
void QgsMapToolNodeTool::createTopologyRubbedBands( QgsVectorLayer* vlayer, QList<VertexEntry> vertexMap, int vertex )
{
QMultiMap<double, QgsSnappingResult> currentResultList;
QgsGeometry* geometry = mSelectionFeature->feature()->geometry();
//snapp from current vertex
currentResultList.clear();
vlayer->snapWithContext( vertexMap[vertex].point, ZERO_TOLERANCE, currentResultList, QgsSnapper::SnapToVertex );
QMultiMap<double, QgsSnappingResult>::iterator resultIt = currentResultList.begin();
for ( ; resultIt != currentResultList.end(); ++resultIt )
{
//move all other
if ( mSelectionFeature->featureId() != resultIt.value().snappedAtGeometry )
{
if ( mTopologyMovingVertexes.contains( resultIt.value().snappedAtGeometry ) )
{
if ( mTopologyMovingVertexes[resultIt.value().snappedAtGeometry]->contains( resultIt.value().snappedVertexNr ) )
{
//skip vertex already exists in some rubberband
continue;
}
}
QgsRubberBand* trb = new QgsRubberBand( mCanvas, false );
mTopologyRubberBand.append( trb );
int rbId = mTopologyRubberBand.size() - 1;
trb->setWidth( 1 );
trb->setColor( Qt::red );
int tVertex = resultIt.value().snappedVertexNr;
int tVertexBackup = -1, tVertexAfter = -1;
int tVertexFirst = tVertex;//vertex number to check for cycling
QgsFeature topolFeature;
vlayer->featureAtId( resultIt.value().snappedAtGeometry, topolFeature, true, false );
QgsGeometry* topolGeometry = topolFeature.geometry();
while ( tVertex != -1 ) //looking for first vertex to rubber band
{
tVertexBackup = tVertex;
topolGeometry->adjacentVertices( tVertex, tVertex, tVertexAfter );
if ( tVertex == -1 || tVertex == tVertexFirst )
break;//chceck if this is not first vertex of the feature or cycling error
//if closest vertex is not from selected feature or is not selected end
double dist;
QgsPoint point = topolGeometry->vertexAt( tVertex );
int at, before, after;
geometry->closestVertex( point, at, before, after, dist );
if ( dist > ZERO_TOLERANCE || !vertexMap[at].selected ) //problem with double precision
{
break; //found first vertex
}
}
int movingPointIndex = 0;
Vertexes* movingPoints = new Vertexes();
Vertexes* addedPoints = new Vertexes();
if ( mTopologyMovingVertexes.contains( resultIt.value().snappedAtGeometry ) )
{
addedPoints = mTopologyMovingVertexes[ resultIt.value().snappedAtGeometry ];
}
if ( tVertex == -1 ) //adding first point if needed
{
tVertex = tVertexBackup;
}
else
{
trb->addPoint( topolGeometry->vertexAt( tVertex ) );
if ( tVertex == tVertexFirst ) //cycle first vertex need to be added also
{
movingPoints->insert( movingPointIndex );
}
movingPointIndex = 1;
topolGeometry->adjacentVertices( tVertex, tVertexAfter, tVertex );
}
while ( tVertex != -1 )
{
//if closest vertex is not from selected feature or is not selected end
double dist;
QgsPoint point = topolGeometry->vertexAt( tVertex );
int at, before, after;
geometry->closestVertex( point, at, before, after, dist );
// find first no matching vertex
if ( dist > ZERO_TOLERANCE || !vertexMap[at].selected ) //problem with double precision
{
trb->addPoint( topolGeometry->vertexAt( tVertex ) );
break; //found first vertex
}
else //add moving point to rubber band
{
if ( addedPoints->contains( tVertex ) )
break; //just preventing to circle
trb->addPoint( topolGeometry->vertexAt( tVertex ) );
movingPoints->insert( movingPointIndex );
movingPointIndex++;
addedPoints->insert( tVertex );
}
topolGeometry->adjacentVertices( tVertex, tVertexAfter, tVertex );
}
mTopologyMovingVertexes.insert( resultIt.value().snappedAtGeometry, addedPoints );
mTopologyRubberBandVertexes.insert( rbId, movingPoints );
}
}
}
void QgsMapToolNodeTool::coordinatesChanged()
{
//need to update vertex markers since coordinate systems have changed
if ( mSelectionFeature != NULL )
{
mSelectionFeature->updateVertexMarkersPosition( mCanvas );
}
}
void QgsMapToolNodeTool::canvasMoveEvent( QMouseEvent * e )
{
QgsMapLayer* currentLayer = mCanvas->currentLayer();
QgsVectorLayer* vlayer = 0;
if ( currentLayer )
{
vlayer = dynamic_cast<QgsVectorLayer*>( currentLayer );
}
if ( mSelectionFeature == NULL )
{
return; // check that we are able to move something
}
if ( mClicked )
{
mSelectAnother = false;
if ( mMoving )
{
//create rubberband if none exists
if ( mQgsRubberBands.empty() )
{
if ( mIsPoint )
{
QList<VertexEntry> vertexMap = mSelectionFeature->vertexMap();
for ( int i = 0; i < vertexMap.size(); i++ )
{
if ( vertexMap[i].selected )
{
QgsRubberBand* rb = createRubberBandMarker( vertexMap[i].point, vlayer );
mQgsRubberBands.append( rb );
}
}
}
createMovingRubberBands();
QList<QgsSnappingResult> snapResults;
QgsPoint posMapCoord = snapPointFromResults( snapResults, e->pos() );
mPosMapCoordBackup = posMapCoord;
}
else
{
//move rubber band
QList<QgsSnappingResult> snapResults;
QgsPoint firstCoords = mCanvas->getCoordinateTransform()->toMapPoint( mLastCoordinates->x(), mLastCoordinates->y() );
QList<QgsPoint> excludePoints;
excludePoints.append( mClosestVertex );
mSnapper.snapToBackgroundLayers( e->pos(), snapResults, excludePoints );
//get correct coordinates to move
QgsPoint posMapCoord = snapPointFromResults( snapResults, e->pos() );
if ( snapResults.size() > 0 )
{
firstCoords = toMapCoordinates( vlayer, mClosestVertex );
}
//special handling of points
if ( mIsPoint )
{
double offsetX = posMapCoord.x() - firstCoords.x();
double offsetY = posMapCoord.y() - firstCoords.y();
for ( int i = 0; i < mQgsRubberBands.size(); i++ )
{
mQgsRubberBands[i]->setTranslationOffset( offsetX, offsetY );
}
return;
}
//move points
QList<VertexEntry> vertexMap = mSelectionFeature->vertexMap();
for ( int i = 0; i < vertexMap.size(); i++ )
{
if ( vertexMap[i].selected )
{
QgsPoint mapCoords = toMapCoordinates( vlayer, vertexMap[i].point );
double x = mapCoords.x() + posMapCoord.x() - firstCoords.x();
double y = mapCoords.y() + posMapCoord.y() - firstCoords.y();
mQgsRubberBands[vertexMap[i].rubberBandNr]->movePoint( vertexMap[i].index + 1, QgsPoint( x, y ) );
if ( vertexMap[i].index == 0 )
{
mQgsRubberBands[vertexMap[i].rubberBandNr]->movePoint( 0, QgsPoint( x, y ) );
}
}
}
//topological editing
double offsetX = posMapCoord.x() - mPosMapCoordBackup.x();
double offsetY = posMapCoord.y() - mPosMapCoordBackup.y();
for ( int i = 0; i < mTopologyRubberBand.size(); i++ )
{
for ( int pointIndex = 0; pointIndex < mTopologyRubberBand[i]->numberOfVertices() - 1; pointIndex ++ )
{
if ( mTopologyRubberBandVertexes[i]->contains( pointIndex ) )
{
const QgsPoint* point = mTopologyRubberBand[i]->getPoint( 0, pointIndex + 1 );
if ( point == 0 )
{
break;
}
mTopologyRubberBand[i]->movePoint( pointIndex + 1, QgsPoint( point->x() + offsetX, point->y() + offsetY ) );
if ( pointIndex == 0 )
{
mTopologyRubberBand[i]->movePoint( pointIndex , QgsPoint( point->x() + offsetX, point->y() + offsetY ) );
}
}
}
}
mPosMapCoordBackup = posMapCoord;
}
}
else
{
if ( !mSelectionRectangle )
{
mSelectionRectangle = true;
mQRubberBand = new QRubberBand( QRubberBand::Rectangle, mCanvas );
mRect = new QRect();
mRect->setTopLeft( QPoint( mLastCoordinates->x(), mLastCoordinates->y() ) );
}
mRect->setBottomRight( e->pos() );
QRect normalizedRect = mRect->normalized();
mQRubberBand->setGeometry( normalizedRect );
mQRubberBand->show();
}
}
}
void QgsMapToolNodeTool::connectSignals( QgsVectorLayer* vlayer )
{
connect( vlayer, SIGNAL( featureDeleted( int ) ), this, SLOT( featureDeleted( int ) ) );
connect( vlayer, SIGNAL( layerModified( bool ) ), this, SLOT( layerModified( bool ) ) );
}
bool QgsMapToolNodeTool::checkCorrectnessOfFeature( QgsVectorLayer *vlayer )
{
QgsFeature feat;
if ( !vlayer->featureAtId( mSelectionFeature->featureId(), feat, true, false ) )
{
qDebug( "feature doesn't exist any more" );
QMessageBox::warning( NULL,
tr( "Node tool" ),
tr( "Feature was deleted on background.\n" ),
QMessageBox::Ok ,
QMessageBox::Ok );
delete mSelectionFeature;
mSelectionFeature = NULL;
return false;
}
try
{
if ( !GEOSEquals( feat.geometry()->asGeos(), mSelectionFeature->feature()->geometry()->asGeos() ) )
{
//update markers when geometries are not valid
mSelectionFeature->updateFromFeature();
}
}
catch ( ... )
{
// for cases when geos throws an exception for example for invalid polygon
return true;
}
return true;
}
void QgsMapToolNodeTool::canvasPressEvent( QMouseEvent * e )
{
QgsMapLayer* currentLayer = mCanvas->currentLayer();
QgsVectorLayer* vlayer = 0;
if ( currentLayer )
{
vlayer = dynamic_cast<QgsVectorLayer*>( currentLayer );
}
mClicked = true;
mLastCoordinates = new QgsPoint( e->pos().x(), e->pos().y() );
QList<QgsSnappingResult> snapResults;
if ( mSelectionFeature == NULL )
{
mSelectAnother = false;
mSnapper.snapToCurrentLayer( e->pos(), snapResults, QgsSnapper::SnapToVertexAndSegment, -1 );
if ( snapResults.size() < 1 )
{
return;
}
mSelectionFeature = new SelectionFeature();
mSelectionFeature->setSelectedFeature( snapResults[0].snappedAtGeometry, vlayer, NULL, mCanvas );
mIsPoint = (( vlayer->dataProvider()->geometryType() == QGis::WKBPoint ) || ( vlayer->dataProvider()->geometryType() == QGis::WKBMultiPoint ) );
connectSignals( vlayer );
}
else
{
//check if feature is not modified from backgound and still exists
//Note this code should never be reached signals should handle this error
if ( !checkCorrectnessOfFeature( vlayer ) )
return;
//some feature already selected
QgsPoint mapCoordPoint = mCanvas->getCoordinateTransform()->toMapPoint( e->pos().x(), e->pos().y() );
double tol = QgsTolerance::vertexSearchRadius( vlayer, mCanvas->mapRenderer() );
//get geometry and find if snapping is near it
QgsFeature f;
vlayer->featureAtId( mSelectionFeature->featureId(), f, true, false );
QgsGeometry* g = f.geometry();
int atVertex, beforeVertex, afterVertex;
double dist;
g->closestVertex( toLayerCoordinates( vlayer, mapCoordPoint ), atVertex, beforeVertex, afterVertex, dist );
dist = sqrt( dist );
mSnapper.snapToCurrentLayer( e->pos(), snapResults, QgsSnapper::SnapToVertex, tol );
//if (snapResults.size() < 1)
if ( dist > tol )
{
//for points only selecting another feature
//no vertexes found (selecting or inverting selection) if move
//or select another feature if clicked there
QgsSnapper::SnappingType snapType = QgsSnapper::SnapToSegment;
if ( mIsPoint )
{
snapType = QgsSnapper::SnapToVertex;
}
mSnapper.snapToCurrentLayer( e->pos(), snapResults, snapType, tol );
if ( snapResults.size() > 0 )
{
//need to check all if there is a point in my selected feature
mAnother = snapResults.first().snappedAtGeometry;
mSelectAnother = true;
QList<QgsSnappingResult>::iterator it = snapResults.begin();
QgsSnappingResult snapResult;
for ( ; it != snapResults.end() ; ++it )
{
if ( it->snappedAtGeometry == mSelectionFeature->featureId() )
{
snapResult = *it;
mAnother = 0;
mSelectAnother = false;
break;
}
}
if ( !mSelectAnother )
{
mMoving = true;
QgsPoint point = mCanvas->getCoordinateTransform()->toMapPoint( e->pos().x(), e->pos().y() );
mClosestVertex = getClosestVertex( toLayerCoordinates( vlayer, point ) );
if ( !mSelectionFeature->isSelected( snapResult.beforeVertexNr ) || !mSelectionFeature->isSelected( snapResult.afterVertexNr ) )
{
mSelectionFeature->deselectAllVertexes();
mSelectionFeature->selectVertex( snapResult.afterVertexNr );
mSelectionFeature->selectVertex( snapResult.beforeVertexNr );
}
}
}
else
{
if ( !mCtrl )
{
mSelectionFeature->deselectAllVertexes();
}
}
}
else
{
//some vertex selected
mMoving = true;
QgsPoint point = mCanvas->getCoordinateTransform()->toMapPoint( e->pos().x(), e->pos().y() );
mClosestVertex = getClosestVertex( toLayerCoordinates( vlayer, point ) );
if ( mMoving )
{
if ( mCtrl )
{
mSelectionFeature->invertVertexSelection( atVertex );
}
else
{
if ( !( mSelectionFeature->isSelected( atVertex ) ) )
{
mSelectionFeature->deselectAllVertexes();
mSelectionFeature->selectVertex( atVertex );
}
}
}
else
{
//select another feature
mAnother = snapResults.first().snappedAtGeometry;
mSelectAnother = true;
}
}
}
}
void QgsMapToolNodeTool::canvasReleaseEvent( QMouseEvent * e )
{
if ( mSelectionFeature == NULL )
{
// no feature is selected
return;
}
removeRubberBands();
QgsMapLayer* currentLayer = mCanvas->currentLayer();
QgsVectorLayer* vlayer = 0;
if ( currentLayer )
{
vlayer = dynamic_cast<QgsVectorLayer*>( currentLayer );
}
mClicked = false;
mSelectionRectangle = false;
QgsPoint coords = toMapCoordinates( e->pos() );
//QgsPoint coords = mCanvas->getCoordinateTransform()->toMapPoint( e->pos().x(), e->pos().y() );
//QgsPoint firstCoords = toMapCoordinates( *mLastCoordinates );
QgsPoint firstCoords = mCanvas->getCoordinateTransform()->toMapPoint( mLastCoordinates->x(), mLastCoordinates->y() );
if ( mQRubberBand != NULL )
{
mQRubberBand->close();
delete mQRubberBand;
mQRubberBand = NULL;
}
if ( mLastCoordinates->x() == e->pos().x() && mLastCoordinates->y() == e->pos().y() )
{
if ( mSelectAnother )
{
//select another feature (this should deselect current one ;-) )
mSelectionFeature->setSelectedFeature( mAnother, vlayer, NULL, mCanvas );
mIsPoint = (( vlayer->dataProvider()->geometryType() == QGis::WKBPoint ) || ( vlayer->dataProvider()->geometryType() == QGis::WKBMultiPoint ) );
mSelectAnother = false;
}
}
else
{
// coordinates has to be coordinates from layer not canvas
QgsPoint layerCoords = toLayerCoordinates( vlayer, coords );
QgsPoint layerFirstCoords = toLayerCoordinates( vlayer, firstCoords );
//got correct coordinates
double topX;
double bottomX;
if ( layerCoords.x() > layerFirstCoords.x() )
{
topX = layerFirstCoords.x();
bottomX = layerCoords.x();
}
else
{
topX = layerCoords.x();
bottomX = layerFirstCoords.x();
}
double leftY;
double rightY;
if ( layerCoords.y() > layerFirstCoords.y() )
{
leftY = layerFirstCoords.y();
rightY = layerCoords.y();
}
else
{
leftY = layerCoords.y();
rightY = layerFirstCoords.y();
}
if ( mMoving )
{
mMoving = false;
QList<QgsSnappingResult> snapResults;
QgsPoint firstCoords = mCanvas->getCoordinateTransform()->toMapPoint( mLastCoordinates->x(), mLastCoordinates->y() );
QList<QgsPoint> excludePoints;
excludePoints.append( mClosestVertex );
mSnapper.snapToBackgroundLayers( e->pos(), snapResults, excludePoints );
coords = snapPointFromResults( snapResults, e->pos() );
//coords = mCanvas->getCoordinateTransform()->toMapPoint( e->pos().x(), e->pos().y() );
int topologicalEditing = QgsProject::instance()->readNumEntry( "Digitizing", "/TopologicalEditing", 0 );
if ( snapResults.size() > 0 )
{
firstCoords = toMapCoordinates( vlayer, mClosestVertex );
if ( topologicalEditing )
{
insertSegmentVerticesForSnap( snapResults, vlayer );
}
}
QgsPoint layerCoords = toLayerCoordinates( vlayer, coords );
QgsPoint layerFirstCoords = toLayerCoordinates( vlayer, firstCoords );
double changeX = layerCoords.x() - layerFirstCoords.x();
double changeY = layerCoords.y() - layerFirstCoords.y();
mChangingGeometry = true;
mSelectionFeature->moveSelectedVertexes( changeX, changeY );
mCanvas->refresh();
mChangingGeometry = false;
//movingVertexes
}
else //selecting vertexes by rubber band
{
QList<VertexEntry> vertexMap = mSelectionFeature->vertexMap();
if ( !mCtrl )
{
mSelectionFeature->deselectAllVertexes();
}
for ( int i = 0; i < vertexMap.size(); i++ )
{
if ( vertexMap[i].point.x() < bottomX && vertexMap[i].point.y() > leftY && vertexMap[i].point.x() > topX && vertexMap[i].point.y() < rightY )
{
//inverting selection is enough because all were deselected if ctrl is not pressed
mSelectionFeature->invertVertexSelection( i, false );
}
}
}
}
mMoving = false;
removeRubberBands();
mRecentSnappingResults.clear();
mExcludePoint.clear();
}
void QgsMapToolNodeTool::deactivate()
{
removeRubberBands();
delete mSelectionFeature;
mSelectionFeature = NULL;
disconnect( mCanvas->currentLayer(), SIGNAL( featureDeleted( int ) ) );
disconnect( mCanvas->currentLayer(), SIGNAL( layerModified( bool ) ) );
mQRubberBand = NULL;
mSelectAnother = false;
mCtrl = false;
mMoving = true;
mClicked = false;
QgsMapTool::deactivate();
}
void QgsMapToolNodeTool::removeRubberBands()
{
//cleanup rubber bands and list
QList<QgsRubberBand*>::iterator rb_it = mQgsRubberBands.begin();
for ( ;rb_it != mQgsRubberBands.end(); ++rb_it )
{
delete *rb_it;
}
mQgsRubberBands.clear();
rb_it = mTopologyRubberBand.begin();
for ( ;rb_it != mTopologyRubberBand.end(); ++rb_it )
{
delete *rb_it;
}
mTopologyRubberBand.clear();
mTopologyMovingVertexes.clear();
mTopologyRubberBandVertexes.clear();
//remove all data from selected feature (no change to rubber bands itself
if ( mSelectionFeature != NULL )
mSelectionFeature->cleanRubberBandsData();
}
void QgsMapToolNodeTool::canvasDoubleClickEvent( QMouseEvent * e )
{
QgsMapLayer* currentLayer = mCanvas->currentLayer();
QgsVectorLayer* vlayer = 0;
int topologicalEditing = QgsProject::instance()->readNumEntry( "Digitizing", "/TopologicalEditing", 0 );
QMultiMap<double, QgsSnappingResult> currentResultList;
if ( currentLayer )
{
vlayer = dynamic_cast<QgsVectorLayer*>( currentLayer );
}
QList<QgsSnappingResult> snapResults;
mMoving = false;
double tol = QgsTolerance::vertexSearchRadius( vlayer, mCanvas->mapRenderer() );
mSnapper.snapToCurrentLayer( e->pos(), snapResults, QgsSnapper::SnapToSegment, tol );
if ( snapResults.size() < 1 )
{
//nowhere to pul vertex
}
else
{
//some segment selected
if ( snapResults.first().snappedAtGeometry == mSelectionFeature->featureId() )
{
if ( snapResults.first().snappedVertexNr == -1 )
{
QgsPoint coords = snapResults.first().snappedVertex;
QgsPoint layerCoords = toLayerCoordinates( vlayer, coords );
if ( topologicalEditing )
{
//snapp from adding position to this vertex when topological editing is enabled
currentResultList.clear();
vlayer->snapWithContext( layerCoords, ZERO_TOLERANCE, currentResultList, QgsSnapper::SnapToSegment );
}
vlayer->beginEditCommand( tr( "Inserted vertex" ) );
mChangingGeometry = true;
//add vertex
vlayer->insertVertex( layerCoords.x(), layerCoords.y(), mSelectionFeature->featureId(), snapResults.first().afterVertexNr );
if ( topologicalEditing )
{
QMultiMap<double, QgsSnappingResult>::iterator resultIt = currentResultList.begin();
for ( ; resultIt != currentResultList.end(); ++resultIt )
{
//create vertexes on same position when topological editing is enabled
if ( mSelectionFeature->featureId() != resultIt.value().snappedAtGeometry )
vlayer->insertVertex( layerCoords.x(), layerCoords.y(), resultIt.value().snappedAtGeometry, resultIt.value().afterVertexNr );
}
}
vlayer->endEditCommand();
mSelectionFeature->updateFromFeature();
mChangingGeometry = false;
}
}
}
}
QgsPoint QgsMapToolNodeTool::getClosestVertex( QgsPoint point )
{
int at;
int before;
int after;
double dist;
return mSelectionFeature->feature()->geometry()->closestVertex( point, at, before, after, dist );
}
void QgsMapToolNodeTool::keyPressEvent( QKeyEvent* e )
{
if ( e->key() == Qt::Key_Control )
{
mCtrl = true;
}
}
void QgsMapToolNodeTool::keyReleaseEvent( QKeyEvent* e )
{
if ( e->key() == Qt::Key_Control )
{
mCtrl = false;
return;
}
if ( e->key() == Qt::Key_Delete )
{
mChangingGeometry = true;
mSelectionFeature->deleteSelectedVertexes();
mCanvas->refresh();
mChangingGeometry = false;
}
}
//selection object
SelectionFeature::SelectionFeature()
{
mFeature = new QgsFeature();
mFeatureId = 0;
mFeatureSelected = false;
}
SelectionFeature::~SelectionFeature()
{
deleteVertexMap();
}
void SelectionFeature::updateFeature()
{
if ( mFeatureSelected )
{
delete mFeature;
mFeature = new QgsFeature();
mVlayer->featureAtId( mFeatureId, *mFeature );
}
}
void SelectionFeature::cleanRubberBandsData()
{
for ( int i = 0; i < mVertexMap.size(); i++ )
{
mVertexMap[i].rubberBandNr = 0;
mVertexMap[i].index = 0;
mVertexMap[i].inRubberBand = false;
}
}
void SelectionFeature::setSelectedFeature( int featureId, QgsVectorLayer* vlayer, QgsRubberBand* rubberBand, QgsMapCanvas* canvas, QgsFeature* feature )
{
if ( mFeatureSelected )
{
deleteVertexMap();
}
mFeatureSelected = true;
mFeatureId = featureId;
mVlayer = vlayer;
mCanvas = canvas;
mRubberBand = rubberBand;
if ( feature == NULL )
{
vlayer->featureAtId( featureId, *mFeature );
}
else
{
mFeature = feature;
}
//createvertexmap
createVertexMap();
}
void SelectionFeature::deleteSelectedVertexes()
{
int topologicalEditing = QgsProject::instance()->readNumEntry( "Digitizing", "/TopologicalEditing", 0 );
QMultiMap<double, QgsSnappingResult> currentResultList;
mVlayer->beginEditCommand( QObject::tr( "Deleted vertices" ) );
int count = 0;
for ( int i = mVertexMap.size() - 1; i > -1 ; i-- )
{
if ( mVertexMap[i].selected )
{
if ( mVertexMap[i].equals != -1 )
{ //to avoid try to delete some vertex twice
mVertexMap[mVertexMap[i].equals].selected = false;
}
if ( topologicalEditing )
{
//snapp from current vertex
currentResultList.clear();
mVlayer->snapWithContext( mVertexMap[i].point, ZERO_TOLERANCE, currentResultList, QgsSnapper::SnapToVertex );
}
if ( !mVlayer->deleteVertex( mFeatureId, i ) )
{
count = 0;
qDebug( "Setting count 0 and calling break;" );
break;
};
count++;
if ( topologicalEditing )
{
QMultiMap<double, QgsSnappingResult>::iterator resultIt = currentResultList.begin();
for ( ; resultIt != currentResultList.end(); ++resultIt )
{
//move all other
if ( mFeatureId != resultIt.value().snappedAtGeometry )
mVlayer->deleteVertex( resultIt.value().snappedAtGeometry, resultIt.value().snappedVertexNr );
}
}
}
}
QgsFeature f;
mVlayer->featureAtId( mFeatureId, f, true, false );
if ( !GEOSisValid( f.geometry()->asGeos() ) )
{
QMessageBox::warning( NULL,
tr( "Node tool" ),
tr( "Result geometry is invalid. Reverting last changes.\n" ),
QMessageBox::Ok ,
QMessageBox::Ok );
}
if ( count != 0 && GEOSisValid( f.geometry()->asGeos() ) )
{
mVlayer->endEditCommand();
}
else
{
mVlayer->destroyEditCommand(); // no changes... or invalid changes
}
updateFromFeature();