QGIS API Documentation  2.99.0-Master (b058df7)
qgsmaptoolzoom.h
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1 /***************************************************************************
2  qgsmaptoolzoom.h - map tool for zooming
3  ----------------------
4  begin : January 2006
5  copyright : (C) 2006 by Martin Dobias
6  email : wonder.sk at gmail dot com
7  ***************************************************************************
8  * *
9  * This program is free software; you can redistribute it and/or modify *
10  * it under the terms of the GNU General Public License as published by *
11  * the Free Software Foundation; either version 2 of the License, or *
12  * (at your option) any later version. *
13  * *
14  ***************************************************************************/
15 
16 #ifndef QGSMAPTOOLZOOM_H
17 #define QGSMAPTOOLZOOM_H
18 
19 #include "qgsmaptool.h"
20 #include <QRect>
21 #include "qgis_gui.h"
22 
23 class QgsRubberBand;
24 
30 class GUI_EXPORT QgsMapToolZoom : public QgsMapTool
31 {
32  Q_OBJECT
33 
34  public:
36  QgsMapToolZoom( QgsMapCanvas *canvas, bool zoomOut );
37  ~QgsMapToolZoom();
38 
39  virtual Flags flags() const override { return QgsMapTool::Transient; }
40  virtual void canvasMoveEvent( QgsMapMouseEvent *e ) override;
41  virtual void canvasPressEvent( QgsMapMouseEvent *e ) override;
42  virtual void canvasReleaseEvent( QgsMapMouseEvent *e ) override;
43  virtual void deactivate() override;
44 
45  protected:
47  QRect mZoomRect;
48 
50  bool mZoomOut;
51 
53  bool mDragging;
54 
55  QgsRubberBand *mRubberBand = nullptr;
56 };
57 
58 #endif
virtual void canvasMoveEvent(QgsMapMouseEvent *e)
Mouse move event for overriding. Default implementation does nothing.
Definition: qgsmaptool.cpp:148
A QgsMapMouseEvent is the result of a user interaction with the mouse on a QgsMapCanvas.
Map canvas is a class for displaying all GIS data types on a canvas.
Definition: qgsmapcanvas.h:74
virtual void canvasPressEvent(QgsMapMouseEvent *e)
Mouse press event for overriding. Default implementation does nothing.
Definition: qgsmaptool.cpp:158
bool mZoomOut
indicates whether we&#39;re zooming in or out
A class for drawing transient features (e.g.
Definition: qgsrubberband.h:37
virtual void deactivate()
called when map tool is being deactivated
Definition: qgsmaptool.cpp:97
virtual Flags flags() const override
Returns the flags for the map tool.
Abstract base class for all map tools.
Definition: qgsmaptool.h:63
QRect mZoomRect
stores actual zoom rect
A map tool for zooming into the map.
bool mDragging
Flag to indicate a map canvas drag operation is taking place.
virtual void canvasReleaseEvent(QgsMapMouseEvent *e)
Mouse release event for overriding. Default implementation does nothing.
Definition: qgsmaptool.cpp:163