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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_HPP | |
22 | #define PULSEVIEW_PV_VIEW_VIEW_HPP | |
23 | ||
24 | #include <stdint.h> | |
25 | ||
26 | #include <list> | |
27 | #include <memory> | |
28 | #include <set> | |
29 | #include <unordered_map> | |
30 | #include <vector> | |
31 | ||
32 | #include <QAbstractScrollArea> | |
33 | #include <QSizeF> | |
34 | #include <QTimer> | |
35 | ||
36 | #include <pv/data/signaldata.hpp> | |
37 | ||
38 | #include "cursorpair.hpp" | |
39 | #include "flag.hpp" | |
40 | #include "rowitemowner.hpp" | |
41 | ||
42 | namespace sigrok { | |
43 | class ChannelGroup; | |
44 | } | |
45 | ||
46 | namespace pv { | |
47 | ||
48 | class Session; | |
49 | ||
50 | namespace view { | |
51 | ||
52 | class CursorHeader; | |
53 | class Header; | |
54 | class Ruler; | |
55 | class Trace; | |
56 | class Viewport; | |
57 | ||
58 | class View : public QAbstractScrollArea, public RowItemOwner { | |
59 | Q_OBJECT | |
60 | ||
61 | private: | |
62 | enum StickyEvents { | |
63 | RowItemHExtentsChanged = 1, | |
64 | RowItemVExtentsChanged = 2 | |
65 | }; | |
66 | ||
67 | private: | |
68 | static const double MaxScale; | |
69 | static const double MinScale; | |
70 | ||
71 | static const int MaxScrollValue; | |
72 | ||
73 | static const int ScaleUnits[3]; | |
74 | ||
75 | public: | |
76 | explicit View(Session &session, QWidget *parent = 0); | |
77 | ||
78 | Session& session(); | |
79 | const Session& session() const; | |
80 | ||
81 | /** | |
82 | * Returns the view of the owner. | |
83 | */ | |
84 | virtual pv::view::View* view(); | |
85 | ||
86 | /** | |
87 | * Returns the view of the owner. | |
88 | */ | |
89 | virtual const pv::view::View* view() const; | |
90 | ||
91 | Viewport* viewport(); | |
92 | ||
93 | const Viewport* viewport() const; | |
94 | ||
95 | /** | |
96 | * Gets a list of time markers. | |
97 | */ | |
98 | std::vector< std::shared_ptr<TimeItem> > time_items() const; | |
99 | ||
100 | /** | |
101 | * Returns the view time scale in seconds per pixel. | |
102 | */ | |
103 | double scale() const; | |
104 | ||
105 | /** | |
106 | * Returns the time offset of the left edge of the view in | |
107 | * seconds. | |
108 | */ | |
109 | double offset() const; | |
110 | ||
111 | /** | |
112 | * Returns the vertical scroll offset. | |
113 | */ | |
114 | int owner_visual_v_offset() const; | |
115 | ||
116 | /** | |
117 | * Sets the visual v-offset. | |
118 | */ | |
119 | void set_v_offset(int offset); | |
120 | ||
121 | /** | |
122 | * Returns the SI prefix to apply to the graticule time markings. | |
123 | */ | |
124 | unsigned int tick_prefix() const; | |
125 | ||
126 | /** | |
127 | * Returns period of the graticule time markings. | |
128 | */ | |
129 | double tick_period() const; | |
130 | ||
131 | /** | |
132 | * Returns the number of nested parents that this row item owner has. | |
133 | */ | |
134 | unsigned int depth() const; | |
135 | ||
136 | void zoom(double steps); | |
137 | void zoom(double steps, int offset); | |
138 | ||
139 | void zoom_fit(); | |
140 | ||
141 | void zoom_one_to_one(); | |
142 | ||
143 | /** | |
144 | * Sets the scale and offset. | |
145 | * @param scale The new view scale in seconds per pixel. | |
146 | * @param offset The view time offset in seconds. | |
147 | */ | |
148 | void set_scale_offset(double scale, double offset); | |
149 | ||
150 | std::set< std::shared_ptr<pv::data::SignalData> > | |
151 | get_visible_data() const; | |
152 | ||
153 | std::pair<double, double> get_time_extents() const; | |
154 | ||
155 | /** | |
156 | * Returns true if cursors are displayed. false otherwise. | |
157 | */ | |
158 | bool cursors_shown() const; | |
159 | ||
160 | /** | |
161 | * Shows or hides the cursors. | |
162 | */ | |
163 | void show_cursors(bool show = true); | |
164 | ||
165 | /** | |
166 | * Moves the cursors to a convenient position in the view. | |
167 | */ | |
168 | void centre_cursors(); | |
169 | ||
170 | /** | |
171 | * Returns a reference to the pair of cursors. | |
172 | */ | |
173 | std::shared_ptr<CursorPair> cursors() const; | |
174 | ||
175 | /** | |
176 | * Adds a new flag at a specified time. | |
177 | */ | |
178 | void add_flag(double time); | |
179 | ||
180 | /** | |
181 | * Removes a flag from the list. | |
182 | */ | |
183 | void remove_flag(std::shared_ptr<Flag> flag); | |
184 | ||
185 | /** | |
186 | * Gets the list of flags. | |
187 | */ | |
188 | std::vector< std::shared_ptr<Flag> > flags() const; | |
189 | ||
190 | const QPoint& hover_point() const; | |
191 | ||
192 | void update_viewport(); | |
193 | ||
194 | void restack_all_row_items(); | |
195 | ||
196 | Q_SIGNALS: | |
197 | void hover_point_changed(); | |
198 | ||
199 | void selection_changed(); | |
200 | ||
201 | void scale_offset_changed(); | |
202 | ||
203 | private: | |
204 | void get_scroll_layout(double &length, double &offset) const; | |
205 | ||
206 | /** | |
207 | * Simultaneously sets the zoom and offset. | |
208 | * @param scale The scale to set the view to in seconds per pixel. This | |
209 | * value is clamped between MinScale and MaxScale. | |
210 | * @param offset The offset of the left edge of the view in seconds. | |
211 | */ | |
212 | void set_zoom(double scale, int offset); | |
213 | ||
214 | /** | |
215 | * Find a tick spacing and number formatting that does not cause | |
216 | * the values to collide. | |
217 | */ | |
218 | void calculate_tick_spacing(); | |
219 | ||
220 | void update_scroll(); | |
221 | ||
222 | void update_layout(); | |
223 | ||
224 | /** | |
225 | * Satisifies RowItem functionality. | |
226 | * @param p the QPainter to paint into. | |
227 | * @param rect the rectangle of the header area. | |
228 | * @param hover true if the label is being hovered over by the mouse. | |
229 | */ | |
230 | void paint_label(QPainter &p, const QRect &rect, bool hover); | |
231 | ||
232 | /** | |
233 | * Computes the outline rectangle of a label. | |
234 | * @param rect the rectangle of the header area. | |
235 | * @return Returns the rectangle of the signal label. | |
236 | */ | |
237 | QRectF label_rect(const QRectF &rect); | |
238 | ||
239 | RowItemOwner* find_prevalent_trace_group( | |
240 | const std::shared_ptr<sigrok::ChannelGroup> &group, | |
241 | const std::unordered_map<std::shared_ptr<sigrok::Channel>, | |
242 | std::shared_ptr<Signal> > &signal_map); | |
243 | ||
244 | static std::vector< std::shared_ptr<Trace> > | |
245 | extract_new_traces_for_channels( | |
246 | const std::vector< std::shared_ptr<sigrok::Channel> > &channels, | |
247 | const std::unordered_map<std::shared_ptr<sigrok::Channel>, | |
248 | std::shared_ptr<Signal> > &signal_map, | |
249 | std::set< std::shared_ptr<Trace> > &add_list); | |
250 | ||
251 | private: | |
252 | bool eventFilter(QObject *object, QEvent *event); | |
253 | ||
254 | bool viewportEvent(QEvent *e); | |
255 | ||
256 | void resizeEvent(QResizeEvent *e); | |
257 | ||
258 | public: | |
259 | void row_item_appearance_changed(bool label, bool content); | |
260 | void time_item_appearance_changed(bool label, bool content); | |
261 | ||
262 | void extents_changed(bool horz, bool vert); | |
263 | ||
264 | private Q_SLOTS: | |
265 | ||
266 | void h_scroll_value_changed(int value); | |
267 | void v_scroll_value_changed(); | |
268 | ||
269 | void signals_changed(); | |
270 | void data_updated(); | |
271 | ||
272 | void process_sticky_events(); | |
273 | ||
274 | void on_hover_point_changed(); | |
275 | ||
276 | private: | |
277 | Session &session_; | |
278 | ||
279 | Viewport *viewport_; | |
280 | Ruler *ruler_; | |
281 | Header *header_; | |
282 | ||
283 | /// The view time scale in seconds per pixel. | |
284 | double scale_; | |
285 | ||
286 | /// The view time offset in seconds. | |
287 | double offset_; | |
288 | ||
289 | bool updating_scroll_; | |
290 | ||
291 | double tick_period_; | |
292 | unsigned int tick_prefix_; | |
293 | ||
294 | bool show_cursors_; | |
295 | std::shared_ptr<CursorPair> cursors_; | |
296 | ||
297 | std::list< std::shared_ptr<Flag> > flags_; | |
298 | char next_flag_text_; | |
299 | ||
300 | QPoint hover_point_; | |
301 | ||
302 | unsigned int sticky_events_; | |
303 | QTimer lazy_event_handler_; | |
304 | }; | |
305 | ||
306 | } // namespace view | |
307 | } // namespace pv | |
308 | ||
309 | #endif // PULSEVIEW_PV_VIEW_VIEW_HPP |