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90 lines
3.0 KiB
C++
90 lines
3.0 KiB
C++
/***************************************************************************
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qgsmaptoolrectanglecenter.cpp - map tool for adding rectangle
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from center and a point
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---------------------
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begin : July 2017
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copyright : (C) 2017 by Loïc Bartoletti
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email : lbartoletti at tuxfamily dot org
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***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include "qgsmaptoolrectanglecenter.h"
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#include "qgsgeometryrubberband.h"
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#include "qgsgeometryutils.h"
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#include "qgsmapcanvas.h"
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#include "qgslinestring.h"
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#include "qgspoint.h"
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#include <QMouseEvent>
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#include <memory>
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QgsMapToolRectangleCenter::QgsMapToolRectangleCenter( QgsMapToolCapture *parentTool,
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QgsMapCanvas *canvas, CaptureMode mode )
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: QgsMapToolAddRectangle( parentTool, canvas, mode )
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{
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}
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void QgsMapToolRectangleCenter::cadCanvasReleaseEvent( QgsMapMouseEvent *e )
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{
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QgsPoint mapPoint( e->mapPoint() );
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if ( e->button() == Qt::LeftButton )
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{
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mPoints.append( mapPoint );
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if ( !mPoints.isEmpty() && !mTempRubberBand )
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{
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mTempRubberBand = createGeometryRubberBand( ( mode() == CapturePolygon ) ? QgsWkbTypes::PolygonGeometry : QgsWkbTypes::LineGeometry, true );
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mTempRubberBand->show();
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}
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}
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else if ( e->button() == Qt::RightButton )
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{
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deactivate();
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if ( mParentTool )
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{
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mParentTool->canvasReleaseEvent( e );
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}
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}
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}
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void QgsMapToolRectangleCenter::cadCanvasMoveEvent( QgsMapMouseEvent *e )
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{
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QgsPoint mapPoint( e->mapPoint() );
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if ( mTempRubberBand )
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{
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switch ( mPoints.size() )
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{
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case 1:
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{
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if ( qgsDoubleNear( mCanvas->rotation(), 0.0 ) )
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{
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double xOffset = fabs( mapPoint.x() - mPoints.at( 0 ).x() );
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double yOffset = fabs( mapPoint.y() - mPoints.at( 0 ).y() );
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mRectangle = QgsRectangle( QgsPoint( mPoints.at( 0 ).x() - xOffset, mPoints.at( 0 ).y() - yOffset ), QgsPoint( mPoints.at( 0 ).x() + xOffset, mPoints.at( 0 ).y() + yOffset ) );
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mTempRubberBand->setGeometry( QgsMapToolAddRectangle::rectangleToPolygon() );
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}
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else
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{
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double dist = mPoints.at( 0 ).distance( mapPoint );
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double angle = mPoints.at( 0 ).azimuth( mapPoint );
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mRectangle = QgsRectangle( mPoints.at( 0 ).project( -dist, angle ), mPoints.at( 0 ).project( dist, angle ) );
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mTempRubberBand->setGeometry( QgsMapToolAddRectangle::rectangleToPolygon() );
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}
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}
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break;
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default:
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break;
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}
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}
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}
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