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qgsmaptooladdcircle.cpp
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qgsmaptooladdcircle.cpp
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/***************************************************************************
qgsmaptooladdcircle.cpp - map tool for adding circle
---------------------
begin : July 2017
copyright : (C) 2017
email : lbartoletti at tuxfamily dot org
***************************************************************************
* *
* 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 "qgsmaptooladdcircle.h"
#include "qgscompoundcurve.h"
#include "qgscurvepolygon.h"
#include "qgsgeometryrubberband.h"
#include "qgsgeometryutils.h"
#include "qgslinestring.h"
#include "qgsmapcanvas.h"
#include "qgspoint.h"
#include "qgisapp.h"
#include "qgssnapindicator.h"
QgsMapToolAddCircle::QgsMapToolAddCircle( QgsMapToolCapture *parentTool, QgsMapCanvas *canvas, CaptureMode mode )
: QgsMapToolCapture( canvas, QgisApp::instance()->cadDockWidget(), mode )
, mParentTool( parentTool )
, mSnapIndicator( qgis::make_unique< QgsSnapIndicator>( canvas ) )
{
clean();
connect( QgisApp::instance(), &QgisApp::newProject, this, &QgsMapToolAddCircle::stopCapturing );
connect( QgisApp::instance(), &QgisApp::projectRead, this, &QgsMapToolAddCircle::stopCapturing );
}
QgsMapToolAddCircle::~QgsMapToolAddCircle()
{
clean();
}
void QgsMapToolAddCircle::keyPressEvent( QKeyEvent *e )
{
if ( e && e->isAutoRepeat() )
{
return;
}
if ( e && e->key() == Qt::Key_Escape )
{
clean();
if ( mParentTool )
mParentTool->keyPressEvent( e );
}
if ( e && e->key() == Qt::Key_Backspace )
{
if ( mPoints.size() == 1 )
{
if ( mTempRubberBand )
{
delete mTempRubberBand;
mTempRubberBand = nullptr;
}
mPoints.clear();
}
else if ( mPoints.size() > 1 )
{
mPoints.removeLast();
}
if ( mParentTool )
mParentTool->keyPressEvent( e );
}
}
void QgsMapToolAddCircle::keyReleaseEvent( QKeyEvent *e )
{
if ( e && e->isAutoRepeat() )
{
return;
}
}
void QgsMapToolAddCircle::deactivate()
{
if ( !mParentTool || mCircle.isEmpty() )
{
return;
}
mParentTool->clearCurve();
// keep z value from the first snapped point
std::unique_ptr<QgsCircularString> lineString( mCircle.toCircularString() );
for ( const QgsPoint point : qgis::as_const( mPoints ) )
{
if ( QgsWkbTypes::hasZ( point.wkbType() ) &&
point.z() != defaultZValue() )
{
lineString->dropZValue();
lineString->addZValue( point.z() );
break;
}
}
mParentTool->addCurve( lineString.release() );
clean();
QgsMapToolCapture::deactivate();
}
void QgsMapToolAddCircle::activate()
{
clean();
QgsMapToolCapture::activate();
}
void QgsMapToolAddCircle::clean()
{
if ( mTempRubberBand )
{
delete mTempRubberBand;
mTempRubberBand = nullptr;
}
mPoints.clear();
if ( mParentTool )
{
mParentTool->deleteTempRubberBand();
}
mCircle = QgsCircle();
QgsVectorLayer *vLayer = static_cast<QgsVectorLayer *>( QgisApp::instance()->activeLayer() );
if ( vLayer )
mLayerType = vLayer->geometryType();
}