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1 | /* | |
2 | * This file is part of the PulseView 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 PULSEVIEW_PV_VIEW_RULER_H | |
22 | #define PULSEVIEW_PV_VIEW_RULER_H | |
23 | ||
24 | #include <boost/weak_ptr.hpp> | |
25 | ||
26 | #include "marginwidget.h" | |
27 | ||
28 | namespace pv { | |
29 | namespace view { | |
30 | ||
31 | class TimeMarker; | |
32 | class View; | |
33 | ||
34 | class Ruler : public MarginWidget | |
35 | { | |
36 | Q_OBJECT | |
37 | ||
38 | private: | |
39 | static const int MinorTickSubdivision; | |
40 | static const int ScaleUnits[3]; | |
41 | ||
42 | static const QString SIPrefixes[9]; | |
43 | static const int FirstSIPrefixPower; | |
44 | ||
45 | static const int HoverArrowSize; | |
46 | ||
47 | public: | |
48 | Ruler(View &parent); | |
49 | ||
50 | void clear_selection(); | |
51 | ||
52 | static QString format_time(double t, unsigned int prefix, | |
53 | unsigned precision = 0); | |
54 | ||
55 | private: | |
56 | void paintEvent(QPaintEvent *event); | |
57 | ||
58 | void mouseMoveEvent(QMouseEvent *e); | |
59 | void mousePressEvent(QMouseEvent *e); | |
60 | void mouseReleaseEvent(QMouseEvent *); | |
61 | ||
62 | private: | |
63 | /** | |
64 | * Draw a hover arrow under the cursor position. | |
65 | */ | |
66 | void draw_hover_mark(QPainter &p); | |
67 | ||
68 | private slots: | |
69 | void hover_point_changed(); | |
70 | ||
71 | private: | |
72 | boost::weak_ptr<TimeMarker> _grabbed_marker; | |
73 | QPoint _mouse_down_point; | |
74 | bool _dragging; | |
75 | }; | |
76 | ||
77 | } // namespace view | |
78 | } // namespace pv | |
79 | ||
80 | #endif // PULSEVIEW_PV_VIEW_RULER_H |