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qgsmaptoolmovefeature.cpp
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qgsmaptoolmovefeature.cpp
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/***************************************************************************
qgsmaptoolmovefeature.cpp - map tool for translating features by mouse drag
---------------------
begin : Juli 2007
copyright : (C) 2007 by Marco Hugentobler
email : marco dot hugentobler at karto dot baug dot ethz dot ch
***************************************************************************
* *
* 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 "qgisapp.h"
#include "qgsadvanceddigitizingdockwidget.h"
#include "qgsfeatureiterator.h"
#include "qgsgeometry.h"
#include "qgslogger.h"
#include "qgsmapcanvas.h"
#include "qgsmaptoolmovefeature.h"
#include "qgsrubberband.h"
#include "qgstolerance.h"
#include "qgsvectorlayer.h"
#include "qgsvectorlayertools.h"
#include <QMouseEvent>
#include <QSettings>
#include <limits>
QgsMapToolMoveFeature::QgsMapToolMoveFeature( QgsMapCanvas* canvas , MoveMode mode )
: QgsMapToolAdvancedDigitizing( canvas, QgisApp::instance()->cadDockWidget() )
, mRubberBand( nullptr )
, mMode( mode )
{
mToolName = tr( "Move feature" );
switch ( mode )
{
case Move:
mCaptureMode = QgsMapToolAdvancedDigitizing::CaptureSegment;
break;
case CopyMove:
mCaptureMode = QgsMapToolAdvancedDigitizing::CaptureLine; // we copy/move several times
break;
}
}
QgsMapToolMoveFeature::~QgsMapToolMoveFeature()
{
delete mRubberBand;
}
void QgsMapToolMoveFeature::cadCanvasMoveEvent( QgsMapMouseEvent* e )
{
if ( mRubberBand )
{
QgsPoint pointCanvasCoords = e->mapPoint();
double offsetX = pointCanvasCoords.x() - mStartPointMapCoords.x();
double offsetY = pointCanvasCoords.y() - mStartPointMapCoords.y();
mRubberBand->setTranslationOffset( offsetX, offsetY );
mRubberBand->updatePosition();
mRubberBand->update();
}
}
void QgsMapToolMoveFeature::cadCanvasReleaseEvent( QgsMapMouseEvent* e )
{
QgsVectorLayer* vlayer = currentVectorLayer();
if ( !vlayer || !vlayer->isEditable() )
{
delete mRubberBand;
mRubberBand = nullptr;
cadDockWidget()->clear();
notifyNotEditableLayer();
return;
}
if ( !mRubberBand )
{
//find first geometry under mouse cursor and store iterator to it
QgsPoint layerCoords = toLayerCoordinates( vlayer, e->pos() );
double searchRadius = QgsTolerance::vertexSearchRadius( mCanvas->currentLayer(), mCanvas->mapSettings() );
QgsRectangle selectRect( layerCoords.x() - searchRadius, layerCoords.y() - searchRadius,
layerCoords.x() + searchRadius, layerCoords.y() + searchRadius );
if ( vlayer->selectedFeatureCount() == 0 )
{
QgsFeatureIterator fit = vlayer->getFeatures( QgsFeatureRequest().setFilterRect( selectRect ).setSubsetOfAttributes( QgsAttributeList() ) );
//find the closest feature
QgsGeometry pointGeometry = QgsGeometry::fromPoint( layerCoords );
if ( pointGeometry.isEmpty() )
{
cadDockWidget()->clear();
return;
}
double minDistance = std::numeric_limits<double>::max();
QgsFeature cf;
QgsFeature f;
while ( fit.nextFeature( f ) )
{
if ( f.hasGeometry() )
{
double currentDistance = pointGeometry.distance( f.geometry() );
if ( currentDistance < minDistance )
{
minDistance = currentDistance;
cf = f;
}
}
}
if ( minDistance == std::numeric_limits<double>::max() )
{
cadDockWidget()->clear();
return;
}
mMovedFeatures.clear();
mMovedFeatures << cf.id(); //todo: take the closest feature, not the first one...
mRubberBand = createRubberBand( vlayer->geometryType() );
mRubberBand->setToGeometry( cf.geometry(), vlayer );
}
else
{
mMovedFeatures = vlayer->selectedFeatureIds();
mRubberBand = createRubberBand( vlayer->geometryType() );
QgsFeature feat;
QgsFeatureIterator it = vlayer->selectedFeaturesIterator( QgsFeatureRequest().setSubsetOfAttributes( QgsAttributeList() ) );
while ( it.nextFeature( feat ) )
{
mRubberBand->addGeometry( feat.geometry(), vlayer );
}
}
mStartPointMapCoords = e->mapPoint();
mRubberBand->setColor( QColor( 255, 0, 0, 65 ) );
mRubberBand->setWidth( 2 );
mRubberBand->show();
}
else
{
// copy and move mode
if ( e->button() != Qt::LeftButton )
{
cadDockWidget()->clear();
delete mRubberBand;
mRubberBand = nullptr;
return;
}
QgsPoint startPointLayerCoords = toLayerCoordinates(( QgsMapLayer* )vlayer, mStartPointMapCoords );
QgsPoint stopPointLayerCoords = toLayerCoordinates(( QgsMapLayer* )vlayer, e->mapPoint() );
double dx = stopPointLayerCoords.x() - startPointLayerCoords.x();
double dy = stopPointLayerCoords.y() - startPointLayerCoords.y();
vlayer->beginEditCommand( mMode == Move ? tr( "Feature moved" ) : tr( "Feature copied and moved" ) );
switch ( mMode )
{
case Move:
Q_FOREACH ( QgsFeatureId id, mMovedFeatures )
{
vlayer->translateFeature( id, dx, dy );
}
delete mRubberBand;
mRubberBand = nullptr;
break;
case CopyMove:
QgsFeatureRequest request;
request.setFilterFids( mMovedFeatures );
QString* errorMsg = new QString();
if ( !QgisApp::instance()->vectorLayerTools()->copyMoveFeatures( vlayer, request, dx, dy, errorMsg ) )
{
emit messageEmitted( *errorMsg, QgsMessageBar::CRITICAL );
delete mRubberBand;
mRubberBand = nullptr;
}
break;
}
vlayer->endEditCommand();
vlayer->triggerRepaint();
}
}
//! called when map tool is being deactivated
void QgsMapToolMoveFeature::deactivate()
{
//delete rubber band
delete mRubberBand;
mRubberBand = nullptr;
QgsMapTool::deactivate();
}