QGIS API Documentation 3.40.0-Bratislava (b56115d8743)
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qgsopacitywidget.h
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1/***************************************************************************
2 qgsopacitywidget.h
3 -----------------
4 Date : May 2017
5 Copyright : (C) 2017 Nyall Dawson
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 QGSOPACITYWIDGET_H
17#define QGSOPACITYWIDGET_H
18
19#include <QWidget>
20#include "qgis_sip.h"
21#include "qgis_gui.h"
22
24class QSlider;
25
31class GUI_EXPORT QgsOpacityWidget : public QWidget
32{
33 Q_OBJECT
34 Q_PROPERTY( double opacity READ opacity WRITE setOpacity NOTIFY opacityChanged )
35
36 public:
37
41 explicit QgsOpacityWidget( QWidget *parent SIP_TRANSFERTHIS = nullptr );
42
49 double opacity() const;
50
51 public slots:
52
59 void setOpacity( double opacity );
60
61 signals:
62
69 void opacityChanged( double opacity );
70
71 private slots:
72
73 void spinChanged( double value );
74
75 private:
76
77 QgsDoubleSpinBox *mSpinBox = nullptr;
78 QSlider *mSlider = nullptr;
79
80};
81
82#endif // QGSOPACITYWIDGET_H
The QgsSpinBox is a spin box with a clear button that will set the value to the defined clear value.
A widget for setting an opacity value.
void opacityChanged(double opacity)
Emitted when the opacity is changed in the widget, where opacity ranges from 0.0 (transparent) to 1....
#define SIP_TRANSFERTHIS
Definition qgis_sip.h:53