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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 RulerHeight; | |
55 | ||
56 | static const int MaxScrollValue; | |
57 | ||
58 | public: | |
59 | static const int SignalHeight; | |
60 | static const int SignalMargin; | |
61 | static const int SignalSnapGridSize; | |
62 | ||
63 | static const QColor CursorAreaColour; | |
64 | ||
65 | static const QSizeF LabelPadding; | |
66 | ||
67 | public: | |
68 | explicit View(SigSession &session, QWidget *parent = 0); | |
69 | ||
70 | SigSession& session(); | |
71 | const SigSession& session() const; | |
72 | ||
73 | /** | |
74 | * Returns the view time scale in seconds per pixel. | |
75 | */ | |
76 | double scale() const; | |
77 | ||
78 | /** | |
79 | * Returns the time offset of the left edge of the view in | |
80 | * seconds. | |
81 | */ | |
82 | double offset() const; | |
83 | int v_offset() const; | |
84 | ||
85 | void zoom(double steps); | |
86 | void zoom(double steps, int offset); | |
87 | ||
88 | void zoom_fit(); | |
89 | ||
90 | void zoom_one_to_one(); | |
91 | ||
92 | /** | |
93 | * Sets the scale and offset. | |
94 | * @param scale The new view scale in seconds per pixel. | |
95 | * @param offset The view time offset in seconds. | |
96 | */ | |
97 | void set_scale_offset(double scale, double offset); | |
98 | ||
99 | std::vector< boost::shared_ptr<Trace> > get_traces() const; | |
100 | ||
101 | std::list<boost::weak_ptr<SelectableItem> > selected_items() const; | |
102 | ||
103 | /** | |
104 | * Returns true if cursors are displayed. false otherwise. | |
105 | */ | |
106 | bool cursors_shown() const; | |
107 | ||
108 | /** | |
109 | * Shows or hides the cursors. | |
110 | */ | |
111 | void show_cursors(bool show = true); | |
112 | ||
113 | /** | |
114 | * Moves the cursors to a convenient position in the view. | |
115 | */ | |
116 | void centre_cursors(); | |
117 | ||
118 | /** | |
119 | * Returns a reference to the pair of cursors. | |
120 | */ | |
121 | CursorPair& cursors(); | |
122 | ||
123 | /** | |
124 | * Returns a reference to the pair of cursors. | |
125 | */ | |
126 | const CursorPair& cursors() const; | |
127 | ||
128 | const QPoint& hover_point() const; | |
129 | ||
130 | void normalize_layout(); | |
131 | ||
132 | void update_viewport(); | |
133 | ||
134 | signals: | |
135 | void hover_point_changed(); | |
136 | ||
137 | void signals_moved(); | |
138 | ||
139 | void selection_changed(); | |
140 | ||
141 | void scale_offset_changed(); | |
142 | ||
143 | private: | |
144 | void get_scroll_layout(double &length, double &offset) const; | |
145 | ||
146 | void set_zoom(double scale, int offset); | |
147 | ||
148 | void update_scroll(); | |
149 | ||
150 | void update_layout(); | |
151 | ||
152 | static bool compare_trace_v_offsets( | |
153 | const boost::shared_ptr<pv::view::Trace> &a, | |
154 | const boost::shared_ptr<pv::view::Trace> &b); | |
155 | ||
156 | private: | |
157 | bool eventFilter(QObject *object, QEvent *event); | |
158 | ||
159 | bool viewportEvent(QEvent *e); | |
160 | ||
161 | void resizeEvent(QResizeEvent *e); | |
162 | ||
163 | private slots: | |
164 | ||
165 | void h_scroll_value_changed(int value); | |
166 | void v_scroll_value_changed(int value); | |
167 | ||
168 | void signals_changed(); | |
169 | void data_updated(); | |
170 | ||
171 | void marker_time_changed(); | |
172 | ||
173 | void on_signals_moved(); | |
174 | ||
175 | void on_geometry_updated(); | |
176 | ||
177 | private: | |
178 | SigSession &_session; | |
179 | ||
180 | Viewport *_viewport; | |
181 | Ruler *_ruler; | |
182 | Header *_header; | |
183 | ||
184 | uint64_t _data_length; | |
185 | ||
186 | /// The view time scale in seconds per pixel. | |
187 | double _scale; | |
188 | ||
189 | /// The view time offset in seconds. | |
190 | double _offset; | |
191 | ||
192 | int _v_offset; | |
193 | bool _updating_scroll; | |
194 | ||
195 | bool _show_cursors; | |
196 | CursorPair _cursors; | |
197 | ||
198 | QPoint _hover_point; | |
199 | }; | |
200 | ||
201 | } // namespace view | |
202 | } // namespace pv | |
203 | ||
204 | #endif // PULSEVIEW_PV_VIEW_VIEW_H |