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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
19 | */ | |
20 | ||
21 | #ifndef SIGVIEW_H | |
22 | #define SIGVIEW_H | |
23 | ||
24 | #include <QtOpenGL/QGLWidget> | |
25 | #include <QTimer> | |
26 | ||
27 | class QPainter; | |
28 | class QPaintEvent; | |
29 | class SigSession; | |
30 | ||
31 | class SigView : public QGLWidget | |
32 | { | |
33 | Q_OBJECT | |
34 | ||
35 | private: | |
36 | static const double MaxScale; | |
37 | static const double MinScale; | |
38 | ||
39 | static const int SignalHeight; | |
40 | static const int LabelMarginWidth; | |
41 | static const int RulerHeight; | |
42 | ||
43 | static const int MinorTickSubdivision; | |
44 | static const int ScaleUnits[3]; | |
45 | ||
46 | static const QString SIPrefixes[9]; | |
47 | static const int FirstSIPrefixPower; | |
48 | ||
49 | public: | |
50 | explicit SigView(SigSession &session, QWidget *parent = 0); | |
51 | ||
52 | void zoom(double steps); | |
53 | ||
54 | protected: | |
55 | ||
56 | void initializeGL(); | |
57 | ||
58 | void resizeGL(int width, int height); | |
59 | ||
60 | void paintEvent(QPaintEvent *event); | |
61 | ||
62 | private: | |
63 | void mousePressEvent(QMouseEvent *event); | |
64 | void mouseMoveEvent(QMouseEvent *event); | |
65 | void mouseReleaseEvent(QMouseEvent *event); | |
66 | void wheelEvent(QWheelEvent *event); | |
67 | ||
68 | private: | |
69 | void setup_viewport(int width, int height); | |
70 | ||
71 | void paint_ruler(QPainter &p); | |
72 | ||
73 | void zoom(double steps, int offset); | |
74 | ||
75 | private slots: | |
76 | void data_updated(); | |
77 | ||
78 | private: | |
79 | SigSession &_session; | |
80 | ||
81 | double _scale; | |
82 | double _offset; | |
83 | ||
84 | QPoint _mouse_down_point; | |
85 | double _mouse_down_offset; | |
86 | }; | |
87 | ||
88 | #endif // SIGVIEW_H |