CuteLogger
Fast and simple logging solution for Qt based applications
colorwheel.h
1 /*
2  * Copyright (c) 2013 Meltytech, LLC
3  * Author: Dan Dennedy <dan@dennedy.org>
4  *
5  * This program is free software: you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation, either version 3 of the License, or
8  * (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
17  */
18 
19 #ifndef COLORWHEEL_H
20 #define COLORWHEEL_H
21 
22 #include <QWidget>
23 #include <QPainter>
24 #include <QResizeEvent>
25 
26 class ColorWheel : public QWidget
27 {
28  Q_OBJECT
29 public:
30  explicit ColorWheel(QWidget *parent = 0);
31 
32  virtual QSize sizeHint () const;
33  virtual QSize minimumSizeHint () const;
34  QColor color();
35  void setColor(const QColor &color);
36 
37 signals:
38  void colorChanged(const QColor &color);
39 
40 public slots:
41  void changeColor(const QColor &color);
42 
43 protected:
44  void mousePressEvent(QMouseEvent *event);
45  void mouseMoveEvent(QMouseEvent *event);
46  void mouseReleaseEvent(QMouseEvent *event);
47  void resizeEvent(QResizeEvent *event);
48  void paintEvent(QPaintEvent *event);
49 
50 private:
51  QSize m_initialSize;
52  QImage m_image;
53  bool m_isMouseDown;
54  QPoint m_lastPoint;
55  int m_margin;
56  int m_sliderWidth;
57  QRegion m_wheelRegion;
58  QRegion m_sliderRegion;
59  QColor m_color;
60  bool m_isInWheel;
61  bool m_isInSquare;
62 
63  int wheelSize() const;
64  QColor colorForPoint(const QPoint &point);
65  void drawWheel();
66  void drawWheelDot(QPainter &painter);
67  void drawSliderBar(QPainter &painter);
68  void drawSlider();
69 };
70 
71 #endif // COLORWHEEL_H