QGIS API Documentation  3.13.0-Master (788156190c)
qgsratiolockbutton.h
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1 /***************************************************************************
2  qgsratiolockbutton.cpp - Lock button
3  --------------------------------------
4  Date : July, 2017
5  Copyright : (C) 2017 by Mathieu Pellerin
6  Email : nirvn dot asia 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 QGSLOCKBUTTON_H
17 #define QGSLOCKBUTTON_H
18 
19 #include "qgsratiolockbutton.h"
20 
21 #include <QToolButton>
22 #include "qgis_gui.h"
23 #include "qgis_sip.h"
24 
25 #include <QPointer>
26 class QDoubleSpinBox;
27 
34 class GUI_EXPORT QgsRatioLockButton : public QToolButton
35 {
36  Q_OBJECT
37  Q_PROPERTY( bool locked READ locked WRITE setLocked )
38 
39  public:
40 
45  QgsRatioLockButton( QWidget *parent SIP_TRANSFERTHIS = nullptr );
46 
52  void setLocked( bool locked );
53 
59  bool locked() const { return mLocked; }
60 
71  void setWidthSpinBox( QDoubleSpinBox *widget );
72 
83  void setHeightSpinBox( QDoubleSpinBox *widget );
84 
89  void resetRatio();
90 
91  signals:
92 
96  void lockChanged( bool locked );
97 
98  protected:
99 
100  void changeEvent( QEvent *e ) override;
101  void showEvent( QShowEvent *e ) override;
102  void resizeEvent( QResizeEvent *event ) override;
103 
104  private:
105 
106  void drawButton();
107 
108  bool mLocked = false;
109 
110  QPointer< QDoubleSpinBox > mWidthSpinBox;
111  double mPrevWidth = 0;
112  QPointer< QDoubleSpinBox > mHeightSpinBox;
113  double mPrevHeight = 0;
114  bool mUpdatingRatio = false;
115 
116  private slots:
117 
118  void buttonClicked();
119 
120  void widthSpinBoxChanged( double value );
121  void heightSpinBoxChanged( double value );
122 
123 };
124 
125 #endif
qgsratiolockbutton.h
QgsRatioLockButton
Definition: qgsratiolockbutton.h:34
qgis_sip.h
QgsRatioLockButton::locked
bool locked() const
Returns whether the button state is locked.
Definition: qgsratiolockbutton.h:59
SIP_TRANSFERTHIS
#define SIP_TRANSFERTHIS
Definition: qgis_sip.h:53