QGIS API Documentation  3.37.0-Master (a5b4d9743e8)
qgsmaptoolpan.h
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1 /***************************************************************************
2  qgsmaptoolpan.h - map tool for panning in map canvas
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 QGSMAPTOOLPAN_H
17 #define QGSMAPTOOLPAN_H
18 
19 #include "qgsmaptool.h"
20 #include "qgis_gui.h"
21 
22 class QgsMapCanvas;
23 
24 
30 class GUI_EXPORT QgsMapToolPan : public QgsMapTool
31 {
32  Q_OBJECT
33 
34  public:
36  QgsMapToolPan( QgsMapCanvas *canvas );
37  ~QgsMapToolPan() override;
38 
39  void activate() override;
40  void deactivate() override;
41 
42  Flags flags() const override;
43  void canvasPressEvent( QgsMapMouseEvent *e ) override;
44  void canvasMoveEvent( QgsMapMouseEvent *e ) override;
45  void canvasReleaseEvent( QgsMapMouseEvent *e ) override;
46  void canvasDoubleClickEvent( QgsMapMouseEvent *e ) override;
47  bool gestureEvent( QGestureEvent *e ) override;
48 
54  bool isDragging() const { return mDragging; }
55 
56  signals:
57 
68  void panDistanceBearingChanged( double distance, Qgis::DistanceUnit unit, double bearing );
69 
70  private:
71 
73  bool mDragging;
75  bool mPinching = false;
76 
77  void pinchTriggered( QPinchGesture *gesture );
78 };
79 
80 #endif
DistanceUnit
Units of distance.
Definition: qgis.h:4090
Map canvas is a class for displaying all GIS data types on a canvas.
Definition: qgsmapcanvas.h:93
A QgsMapMouseEvent is the result of a user interaction with the mouse on a QgsMapCanvas.
A map tool for panning the map.
Definition: qgsmaptoolpan.h:31
bool isDragging() const
Returns true if a drag operation is in progress.
Definition: qgsmaptoolpan.h:54
void panDistanceBearingChanged(double distance, Qgis::DistanceUnit unit, double bearing)
Emitted whenever the distance or bearing of an in-progress panning operation is changed.
Abstract base class for all map tools.
Definition: qgsmaptool.h:71
virtual void canvasDoubleClickEvent(QgsMapMouseEvent *e)
Mouse double-click event for overriding. Default implementation does nothing.
Definition: qgsmaptool.cpp:179
QFlags< Flag > Flags
Definition: qgsmaptool.h:116
virtual void canvasPressEvent(QgsMapMouseEvent *e)
Mouse press event for overriding. Default implementation does nothing.
Definition: qgsmaptool.cpp:184
virtual void canvasMoveEvent(QgsMapMouseEvent *e)
Mouse move event for overriding. Default implementation does nothing.
Definition: qgsmaptool.cpp:174
virtual Flags flags() const
Returns the flags for the map tool.
Definition: qgsmaptool.h:121
virtual void canvasReleaseEvent(QgsMapMouseEvent *e)
Mouse release event for overriding. Default implementation does nothing.
Definition: qgsmaptool.cpp:189
virtual void activate()
called when set as currently active map tool
Definition: qgsmaptool.cpp:94
virtual bool gestureEvent(QGestureEvent *e)
gesture event for overriding. Default implementation does nothing.
Definition: qgsmaptool.cpp:209
virtual void deactivate()
called when map tool is being deactivated
Definition: qgsmaptool.cpp:110