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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_VIEW_H | |
22 | #define PULSEVIEW_PV_VIEW_VIEW_H | |
23 | ||
24 | #include <stdint.h> | |
25 | ||
26 | #include <vector> | |
27 | ||
28 | #include <boost/shared_ptr.hpp> | |
29 | #include <boost/weak_ptr.hpp> | |
30 | ||
31 | #include <QAbstractScrollArea> | |
32 | #include <QSizeF> | |
33 | ||
34 | #include "cursorpair.h" | |
35 | ||
36 | namespace pv { | |
37 | ||
38 | class SigSession; | |
39 | ||
40 | namespace view { | |
41 | ||
42 | class Header; | |
43 | class Ruler; | |
44 | class Trace; | |
45 | class Viewport; | |
46 | ||
47 | class View : public QAbstractScrollArea { | |
48 | Q_OBJECT | |
49 | ||
50 | private: | |
51 | static const double MaxScale; | |
52 | static const double MinScale; | |
53 | ||
54 | static const int LabelMarginWidth; | |
55 | static const int RulerHeight; | |
56 | ||
57 | static const int MaxScrollValue; | |
58 | ||
59 | public: | |
60 | static const int SignalHeight; | |
61 | static const int SignalMargin; | |
62 | static const int SignalSnapGridSize; | |
63 | ||
64 | static const QColor CursorAreaColour; | |
65 | ||
66 | static const QSizeF LabelPadding; | |
67 | ||
68 | public: | |
69 | explicit View(SigSession &session, QWidget *parent = 0); | |
70 | ||
71 | SigSession& session(); | |
72 | const SigSession& session() const; | |
73 | ||
74 | /** | |
75 | * Returns the view time scale in seconds per pixel. | |
76 | */ | |
77 | double scale() const; | |
78 | ||
79 | /** | |
80 | * Returns the time offset of the left edge of the view in | |
81 | * seconds. | |
82 | */ | |
83 | double offset() const; | |
84 | int v_offset() const; | |
85 | ||
86 | void zoom(double steps); | |
87 | void zoom(double steps, int offset); | |
88 | ||
89 | /** | |
90 | * Sets the scale and offset. | |
91 | * @param scale The new view scale in seconds per pixel. | |
92 | * @param offset The view time offset in seconds. | |
93 | */ | |
94 | void set_scale_offset(double scale, double offset); | |
95 | ||
96 | std::vector< boost::shared_ptr<Trace> > get_traces() const; | |
97 | ||
98 | std::list<boost::weak_ptr<SelectableItem> > selected_items() const; | |
99 | ||
100 | /** | |
101 | * Returns true if cursors are displayed. false otherwise. | |
102 | */ | |
103 | bool cursors_shown() const; | |
104 | ||
105 | /** | |
106 | * Shows or hides the cursors. | |
107 | */ | |
108 | void show_cursors(bool show = true); | |
109 | ||
110 | /** | |
111 | * Moves the cursors to a convenient position in the view. | |
112 | */ | |
113 | void centre_cursors(); | |
114 | ||
115 | /** | |
116 | * Returns a reference to the pair of cursors. | |
117 | */ | |
118 | CursorPair& cursors(); | |
119 | ||
120 | /** | |
121 | * Returns a reference to the pair of cursors. | |
122 | */ | |
123 | const CursorPair& cursors() const; | |
124 | ||
125 | const QPoint& hover_point() const; | |
126 | ||
127 | void normalize_layout(); | |
128 | ||
129 | void update_viewport(); | |
130 | ||
131 | signals: | |
132 | void hover_point_changed(); | |
133 | ||
134 | void signals_moved(); | |
135 | ||
136 | void selection_changed(); | |
137 | ||
138 | void scale_offset_changed(); | |
139 | ||
140 | private: | |
141 | void get_scroll_layout(double &length, double &offset) const; | |
142 | ||
143 | void update_scroll(); | |
144 | ||
145 | static bool compare_trace_v_offsets( | |
146 | const boost::shared_ptr<pv::view::Trace> &a, | |
147 | const boost::shared_ptr<pv::view::Trace> &b); | |
148 | ||
149 | private: | |
150 | bool eventFilter(QObject *object, QEvent *event); | |
151 | ||
152 | bool viewportEvent(QEvent *e); | |
153 | ||
154 | void resizeEvent(QResizeEvent *e); | |
155 | ||
156 | private slots: | |
157 | ||
158 | void h_scroll_value_changed(int value); | |
159 | void v_scroll_value_changed(int value); | |
160 | ||
161 | void signals_changed(); | |
162 | void data_updated(); | |
163 | ||
164 | void marker_time_changed(); | |
165 | ||
166 | void on_signals_moved(); | |
167 | ||
168 | private: | |
169 | SigSession &_session; | |
170 | ||
171 | Viewport *_viewport; | |
172 | Ruler *_ruler; | |
173 | Header *_header; | |
174 | ||
175 | uint64_t _data_length; | |
176 | ||
177 | /// The view time scale in seconds per pixel. | |
178 | double _scale; | |
179 | ||
180 | /// The view time offset in seconds. | |
181 | double _offset; | |
182 | ||
183 | int _v_offset; | |
184 | bool _updating_scroll; | |
185 | ||
186 | bool _show_cursors; | |
187 | CursorPair _cursors; | |
188 | ||
189 | QPoint _hover_point; | |
190 | }; | |
191 | ||
192 | } // namespace view | |
193 | } // namespace pv | |
194 | ||
195 | #endif // PULSEVIEW_PV_VIEW_VIEW_H |