Developer Documentation
QtGraphicsButton.hh
1 /*===========================================================================*\
2 * *
3 * OpenFlipper *
4  * Copyright (c) 2001-2015, RWTH-Aachen University *
5  * Department of Computer Graphics and Multimedia *
6  * All rights reserved. *
7  * www.openflipper.org *
8  * *
9  *---------------------------------------------------------------------------*
10  * This file is part of OpenFlipper. *
11  *---------------------------------------------------------------------------*
12  * *
13  * Redistribution and use in source and binary forms, with or without *
14  * modification, are permitted provided that the following conditions *
15  * are met: *
16  * *
17  * 1. Redistributions of source code must retain the above copyright notice, *
18  * this list of conditions and the following disclaimer. *
19  * *
20  * 2. Redistributions in binary form must reproduce the above copyright *
21  * notice, this list of conditions and the following disclaimer in the *
22  * documentation and/or other materials provided with the distribution. *
23  * *
24  * 3. Neither the name of the copyright holder nor the names of its *
25  * contributors may be used to endorse or promote products derived from *
26  * this software without specific prior written permission. *
27  * *
28  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS *
29  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED *
30  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
31  * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER *
32  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, *
33  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, *
34  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR *
35  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF *
36  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING *
37  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS *
38  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
39 * *
40 \*===========================================================================*/
41 
42 /*===========================================================================*\
43 * *
44 * $Revision$ *
45 * $LastChangedBy$ *
46 * $Date$ *
47 * *
48 \*===========================================================================*/
49 
50 
51 
52 #ifndef QT_GRAPHICS_BUTTON_
53 #define QT_GRAPHICS_BUTTON_
54 
55 //=============================================================================
56 //
57 // CLASS QtGraphicsButton - IMPLEMENTATION
58 //
59 //=============================================================================
60 
61 //== INCLUDES =================================================================
62 
63 #include <QGraphicsItem>
64 
65 //== CLASS DEFINITION =========================================================
66 
71 class QtGraphicsButton : public QObject, public QGraphicsItem
72 {
73  Q_OBJECT
74  Q_INTERFACES(QGraphicsItem)
75 
76  public:
77 
85  QtGraphicsButton (const QImage &_image, QGraphicsItem *_parent = 0, int _width = -1, int _height = -1);
86 
87  public:
88 
90  virtual QRectF boundingRect () const;
91 
93  virtual void paint (QPainter *_painter, const QStyleOptionGraphicsItem *_option, QWidget *_widget = 0);
94 
96  virtual void hoverEnterEvent (QGraphicsSceneHoverEvent *_event);
97  virtual void hoverLeaveEvent (QGraphicsSceneHoverEvent *_event);
98  virtual void mousePressEvent (QGraphicsSceneMouseEvent *_event);
99  virtual void mouseReleaseEvent (QGraphicsSceneMouseEvent *_event);
100 
101  virtual QVariant itemChange (GraphicsItemChange _change, const QVariant &_value);
102 
104  void setCheckable (bool _value);
105 
107  void setChecked (bool _value);
108 
110  bool isChecked () const;
111 
112  signals:
113 
115  void pressed ();
116 
117  private:
118 
121  bool checked_;
122  bool pressed_;
123  bool over_;
124 
126  int width_;
127  int height_;
128 
130  QPixmap normalPix_;
131  QPixmap overPix_;
132  QPixmap checkedPix_;
133 };
134 
135 #endif
136 
bool checkable_
button state
virtual void hoverEnterEvent(QGraphicsSceneHoverEvent *_event)
event tracking
virtual QRectF boundingRect() const
returns the bounding rect
QtGraphicsButton(const QImage &_image, QGraphicsItem *_parent=0, int _width=-1, int _height=-1)
virtual void paint(QPainter *_painter, const QStyleOptionGraphicsItem *_option, QWidget *_widget=0)
paints the button
bool isChecked() const
returns button checked state
void pressed()
signals a button press
void setCheckable(bool _value)
makes the button checkable
QPixmap normalPix_
pixmaps for different button states
int width_
button size
void setChecked(bool _value)
sets button checked state