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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 <set> | |
27 | #include <vector> | |
28 | ||
29 | #include <boost/shared_ptr.hpp> | |
30 | #include <boost/weak_ptr.hpp> | |
31 | ||
32 | #include <QAbstractScrollArea> | |
33 | #include <QSizeF> | |
34 | ||
35 | #include <pv/data/signaldata.h> | |
36 | ||
37 | #include "cursorpair.h" | |
38 | ||
39 | namespace pv { | |
40 | ||
41 | class SigSession; | |
42 | ||
43 | namespace view { | |
44 | ||
45 | class Header; | |
46 | class Ruler; | |
47 | class Trace; | |
48 | class Viewport; | |
49 | ||
50 | class View : public QAbstractScrollArea { | |
51 | Q_OBJECT | |
52 | ||
53 | private: | |
54 | static const double MaxScale; | |
55 | static const double MinScale; | |
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 | void zoom_fit(); | |
90 | ||
91 | void zoom_one_to_one(); | |
92 | ||
93 | /** | |
94 | * Sets the scale and offset. | |
95 | * @param scale The new view scale in seconds per pixel. | |
96 | * @param offset The view time offset in seconds. | |
97 | */ | |
98 | void set_scale_offset(double scale, double offset); | |
99 | ||
100 | std::vector< boost::shared_ptr<Trace> > get_traces() const; | |
101 | ||
102 | std::list<boost::weak_ptr<SelectableItem> > selected_items() const; | |
103 | ||
104 | std::set< boost::shared_ptr<pv::data::SignalData> > | |
105 | get_visible_data() const; | |
106 | ||
107 | std::pair<double, double> get_time_extents() const; | |
108 | ||
109 | /** | |
110 | * Returns true if cursors are displayed. false otherwise. | |
111 | */ | |
112 | bool cursors_shown() const; | |
113 | ||
114 | /** | |
115 | * Shows or hides the cursors. | |
116 | */ | |
117 | void show_cursors(bool show = true); | |
118 | ||
119 | /** | |
120 | * Moves the cursors to a convenient position in the view. | |
121 | */ | |
122 | void centre_cursors(); | |
123 | ||
124 | /** | |
125 | * Returns a reference to the pair of cursors. | |
126 | */ | |
127 | CursorPair& cursors(); | |
128 | ||
129 | /** | |
130 | * Returns a reference to the pair of cursors. | |
131 | */ | |
132 | const CursorPair& cursors() const; | |
133 | ||
134 | const QPoint& hover_point() const; | |
135 | ||
136 | void normalize_layout(); | |
137 | ||
138 | void update_viewport(); | |
139 | ||
140 | signals: | |
141 | void hover_point_changed(); | |
142 | ||
143 | void signals_moved(); | |
144 | ||
145 | void selection_changed(); | |
146 | ||
147 | void scale_offset_changed(); | |
148 | ||
149 | private: | |
150 | void get_scroll_layout(double &length, double &offset) const; | |
151 | ||
152 | /** | |
153 | * Simultaneously sets the zoom and offset. | |
154 | * @param scale The scale to set the view to in seconds per pixel. This | |
155 | * value is clamped between MinScale and MaxScale. | |
156 | * @param offset The offset of the left edge of the view in seconds. | |
157 | */ | |
158 | void set_zoom(double scale, int offset); | |
159 | ||
160 | void update_scroll(); | |
161 | ||
162 | void update_layout(); | |
163 | ||
164 | static bool compare_trace_v_offsets( | |
165 | const boost::shared_ptr<pv::view::Trace> &a, | |
166 | const boost::shared_ptr<pv::view::Trace> &b); | |
167 | ||
168 | private: | |
169 | bool eventFilter(QObject *object, QEvent *event); | |
170 | ||
171 | bool viewportEvent(QEvent *e); | |
172 | ||
173 | void resizeEvent(QResizeEvent *e); | |
174 | ||
175 | private slots: | |
176 | ||
177 | void h_scroll_value_changed(int value); | |
178 | void v_scroll_value_changed(int value); | |
179 | ||
180 | void signals_changed(); | |
181 | void data_updated(); | |
182 | ||
183 | void marker_time_changed(); | |
184 | ||
185 | void on_signals_moved(); | |
186 | ||
187 | void on_geometry_updated(); | |
188 | ||
189 | private: | |
190 | SigSession &_session; | |
191 | ||
192 | Viewport *_viewport; | |
193 | Ruler *_ruler; | |
194 | Header *_header; | |
195 | ||
196 | /// The view time scale in seconds per pixel. | |
197 | double _scale; | |
198 | ||
199 | /// The view time offset in seconds. | |
200 | double _offset; | |
201 | ||
202 | int _v_offset; | |
203 | bool _updating_scroll; | |
204 | ||
205 | bool _show_cursors; | |
206 | CursorPair _cursors; | |
207 | ||
208 | QPoint _hover_point; | |
209 | }; | |
210 | ||
211 | } // namespace view | |
212 | } // namespace pv | |
213 | ||
214 | #endif // PULSEVIEW_PV_VIEW_VIEW_H |