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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, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #ifndef PULSEVIEW_PV_VIEWS_TRACEVIEW_VIEW_HPP | |
21 | #define PULSEVIEW_PV_VIEWS_TRACEVIEW_VIEW_HPP | |
22 | ||
23 | #include <cstdint> | |
24 | #include <list> | |
25 | #include <memory> | |
26 | #include <set> | |
27 | #include <unordered_map> | |
28 | #include <vector> | |
29 | ||
30 | #include <QAbstractScrollArea> | |
31 | #include <QShortcut> | |
32 | #include <QSizeF> | |
33 | #include <QSplitter> | |
34 | ||
35 | #include <pv/globalsettings.hpp> | |
36 | #include <pv/util.hpp> | |
37 | #include <pv/data/signaldata.hpp> | |
38 | #include <pv/views/viewbase.hpp> | |
39 | ||
40 | #include "cursorpair.hpp" | |
41 | #include "flag.hpp" | |
42 | #include "trace.hpp" | |
43 | #include "tracetreeitemowner.hpp" | |
44 | ||
45 | using std::list; | |
46 | using std::unordered_map; | |
47 | using std::unordered_set; | |
48 | using std::set; | |
49 | using std::shared_ptr; | |
50 | using std::vector; | |
51 | ||
52 | namespace sigrok { | |
53 | class ChannelGroup; | |
54 | } | |
55 | ||
56 | namespace pv { | |
57 | ||
58 | class Session; | |
59 | ||
60 | namespace data { | |
61 | class Logic; | |
62 | } | |
63 | ||
64 | namespace views { | |
65 | ||
66 | namespace trace { | |
67 | ||
68 | class DecodeTrace; | |
69 | class Header; | |
70 | class Ruler; | |
71 | class Signal; | |
72 | class Viewport; | |
73 | class TriggerMarker; | |
74 | ||
75 | class CustomScrollArea : public QAbstractScrollArea | |
76 | { | |
77 | Q_OBJECT | |
78 | ||
79 | public: | |
80 | CustomScrollArea(QWidget *parent = nullptr); | |
81 | bool viewportEvent(QEvent *event); | |
82 | }; | |
83 | ||
84 | class View : public ViewBase, public TraceTreeItemOwner, public GlobalSettingsInterface | |
85 | { | |
86 | Q_OBJECT | |
87 | ||
88 | private: | |
89 | enum StickyEvents { | |
90 | TraceTreeItemHExtentsChanged = 1, | |
91 | TraceTreeItemVExtentsChanged = 2 | |
92 | }; | |
93 | ||
94 | private: | |
95 | static const pv::util::Timestamp MaxScale; | |
96 | static const pv::util::Timestamp MinScale; | |
97 | ||
98 | static const int MaxScrollValue; | |
99 | ||
100 | static const int ScaleUnits[3]; | |
101 | ||
102 | public: | |
103 | explicit View(Session &session, bool is_main_view=false, QMainWindow *parent = nullptr); | |
104 | ||
105 | ~View(); | |
106 | ||
107 | virtual ViewType get_type() const; | |
108 | ||
109 | /** | |
110 | * Resets the view to its default state after construction. It does however | |
111 | * not reset the signal bases or any other connections with the session. | |
112 | */ | |
113 | virtual void reset_view_state(); | |
114 | ||
115 | Session& session(); // This method is needed for TraceTreeItemOwner, not ViewBase | |
116 | const Session& session() const; // This method is needed for TraceTreeItemOwner, not ViewBase | |
117 | ||
118 | /** | |
119 | * Returns the signals contained in this view. | |
120 | */ | |
121 | unordered_set< shared_ptr<Signal> > signals() const; | |
122 | ||
123 | virtual void clear_signals(); | |
124 | ||
125 | void add_signal(const shared_ptr<Signal> signal); | |
126 | ||
127 | #ifdef ENABLE_DECODE | |
128 | virtual void clear_decode_signals(); | |
129 | ||
130 | virtual void add_decode_signal(shared_ptr<data::DecodeSignal> signal); | |
131 | ||
132 | virtual void remove_decode_signal(shared_ptr<data::DecodeSignal> signal); | |
133 | #endif | |
134 | ||
135 | shared_ptr<Signal> get_signal_under_mouse_cursor() const; | |
136 | ||
137 | /** | |
138 | * Returns the view of the owner. | |
139 | */ | |
140 | virtual View* view(); | |
141 | ||
142 | /** | |
143 | * Returns the view of the owner. | |
144 | */ | |
145 | virtual const View* view() const; | |
146 | ||
147 | Viewport* viewport(); | |
148 | ||
149 | const Viewport* viewport() const; | |
150 | ||
151 | const Ruler* ruler() const; | |
152 | ||
153 | virtual void save_settings(QSettings &settings) const; | |
154 | ||
155 | virtual void restore_settings(QSettings &settings); | |
156 | ||
157 | /** | |
158 | * Gets a list of time markers. | |
159 | */ | |
160 | vector< shared_ptr<TimeItem> > time_items() const; | |
161 | ||
162 | /** | |
163 | * Returns the view time scale in seconds per pixel. | |
164 | */ | |
165 | double scale() const; | |
166 | ||
167 | /** | |
168 | * Returns the internal view version of the time offset of the left edge | |
169 | * of the view in seconds. | |
170 | */ | |
171 | const pv::util::Timestamp& offset() const; | |
172 | ||
173 | /** | |
174 | * Returns the ruler version of the time offset of the left edge | |
175 | * of the view in seconds. | |
176 | */ | |
177 | const pv::util::Timestamp& ruler_offset() const; | |
178 | ||
179 | void set_zero_position(const pv::util::Timestamp& position); | |
180 | ||
181 | void reset_zero_position(); | |
182 | ||
183 | pv::util::Timestamp zero_offset() const; | |
184 | ||
185 | /** | |
186 | * Returns the vertical scroll offset. | |
187 | */ | |
188 | int owner_visual_v_offset() const; | |
189 | ||
190 | /** | |
191 | * Sets the visual v-offset. | |
192 | */ | |
193 | void set_v_offset(int offset); | |
194 | ||
195 | /** | |
196 | * Sets the visual h-offset. | |
197 | */ | |
198 | void set_h_offset(int offset); | |
199 | ||
200 | /** | |
201 | * Gets the length of the horizontal scrollbar. | |
202 | */ | |
203 | int get_h_scrollbar_maximum() const; | |
204 | ||
205 | /** | |
206 | * Returns the SI prefix to apply to the graticule time markings. | |
207 | */ | |
208 | pv::util::SIPrefix tick_prefix() const; | |
209 | ||
210 | /** | |
211 | * Returns the number of fractional digits shown for the time markings. | |
212 | */ | |
213 | unsigned int tick_precision() const; | |
214 | ||
215 | /** | |
216 | * Returns period of the graticule time markings. | |
217 | */ | |
218 | const pv::util::Timestamp& tick_period() const; | |
219 | ||
220 | /** | |
221 | * Returns number of minor division ticks per time marking. | |
222 | */ | |
223 | unsigned int minor_tick_count() const; | |
224 | ||
225 | /** | |
226 | * Returns the unit of time currently used. | |
227 | */ | |
228 | util::TimeUnit time_unit() const; | |
229 | ||
230 | /** | |
231 | * Returns the number of nested parents that this row item owner has. | |
232 | */ | |
233 | unsigned int depth() const; | |
234 | ||
235 | /** | |
236 | * Returns the currently displayed segment, starting at 0. | |
237 | */ | |
238 | uint32_t current_segment() const; | |
239 | ||
240 | /** | |
241 | * Returns whether the currently shown segment can be influenced | |
242 | * (selected) or not. | |
243 | */ | |
244 | bool segment_is_selectable() const; | |
245 | ||
246 | Trace::SegmentDisplayMode segment_display_mode() const; | |
247 | void set_segment_display_mode(Trace::SegmentDisplayMode mode); | |
248 | ||
249 | void zoom(double steps); | |
250 | void zoom(double steps, int offset); | |
251 | ||
252 | void zoom_fit(bool gui_state); | |
253 | ||
254 | /** | |
255 | * Sets the scale and offset. | |
256 | * @param scale The new view scale in seconds per pixel. | |
257 | * @param offset The view time offset in seconds. | |
258 | */ | |
259 | void set_scale_offset(double scale, const pv::util::Timestamp& offset); | |
260 | ||
261 | set< shared_ptr<pv::data::SignalData> > get_visible_data() const; | |
262 | ||
263 | pair<pv::util::Timestamp, pv::util::Timestamp> get_time_extents() const; | |
264 | ||
265 | /** | |
266 | * Returns true if the trace background should be drawn with a colored background. | |
267 | */ | |
268 | bool colored_bg() const; | |
269 | ||
270 | /** | |
271 | * Returns true if cursors are displayed. false otherwise. | |
272 | */ | |
273 | bool cursors_shown() const; | |
274 | ||
275 | /** | |
276 | * Shows or hides the cursors. | |
277 | */ | |
278 | void show_cursors(bool show = true); | |
279 | ||
280 | /** | |
281 | * Sets the cursors to the given offsets. You will still have to call show_cursors separately. | |
282 | */ | |
283 | void set_cursors(pv::util::Timestamp& first, pv::util::Timestamp& second); | |
284 | ||
285 | /** | |
286 | * Moves the cursors to a convenient position in the view. | |
287 | */ | |
288 | void centre_cursors(); | |
289 | ||
290 | /** | |
291 | * Returns a reference to the pair of cursors. | |
292 | */ | |
293 | shared_ptr<CursorPair> cursors() const; | |
294 | ||
295 | /** | |
296 | * Adds a new flag at a specified time. | |
297 | */ | |
298 | shared_ptr<Flag> add_flag(const pv::util::Timestamp& time); | |
299 | ||
300 | /** | |
301 | * Removes a flag from the list. | |
302 | */ | |
303 | void remove_flag(shared_ptr<Flag> flag); | |
304 | ||
305 | /** | |
306 | * Gets the list of flags. | |
307 | */ | |
308 | vector< shared_ptr<Flag> > flags() const; | |
309 | ||
310 | const QPoint& hover_point() const; | |
311 | const QWidget* hover_widget() const; | |
312 | ||
313 | /** | |
314 | * Determines the closest level change (i.e. edge) to a given point, which | |
315 | * is useful for e.g. the "snap to edge" functionality. | |
316 | * | |
317 | * @param p The current position of the mouse cursor | |
318 | * @return The sample number of the nearest level change or -1 if none | |
319 | */ | |
320 | int64_t get_nearest_level_change(const QPoint &p); | |
321 | ||
322 | void restack_all_trace_tree_items(); | |
323 | ||
324 | int header_width() const; | |
325 | ||
326 | void on_setting_changed(const QString &key, const QVariant &value); | |
327 | ||
328 | Q_SIGNALS: | |
329 | void hover_point_changed(const QWidget* widget, const QPoint &hp); | |
330 | ||
331 | void selection_changed(); | |
332 | ||
333 | /// Emitted when the offset changed. | |
334 | void offset_changed(); | |
335 | ||
336 | /// Emitted when the scale changed. | |
337 | void scale_changed(); | |
338 | ||
339 | void sticky_scrolling_changed(bool state); | |
340 | ||
341 | void always_zoom_to_fit_changed(bool state); | |
342 | ||
343 | /// Emitted when the tick_prefix changed. | |
344 | void tick_prefix_changed(); | |
345 | ||
346 | /// Emitted when the tick_precision changed. | |
347 | void tick_precision_changed(); | |
348 | ||
349 | /// Emitted when the tick_period changed. | |
350 | void tick_period_changed(); | |
351 | ||
352 | /// Emitted when the time_unit changed. | |
353 | void time_unit_changed(); | |
354 | ||
355 | /// Emitted when the currently selected segment changed | |
356 | void segment_changed(int segment_id); | |
357 | ||
358 | /// Emitted when the multi-segment display mode changed | |
359 | /// @param mode is a value of Trace::SegmentDisplayMode | |
360 | void segment_display_mode_changed(int mode, bool segment_selectable); | |
361 | ||
362 | /// Emitted when the cursors are shown/hidden | |
363 | void cursor_state_changed(bool show); | |
364 | ||
365 | public Q_SLOTS: | |
366 | void trigger_event(int segment_id, util::Timestamp location); | |
367 | ||
368 | private: | |
369 | void get_scroll_layout(double &length, pv::util::Timestamp &offset) const; | |
370 | ||
371 | /** | |
372 | * Simultaneously sets the zoom and offset. | |
373 | * @param scale The scale to set the view to in seconds per pixel. This | |
374 | * value is clamped between MinScale and MaxScale. | |
375 | * @param offset The offset of the left edge of the view in seconds. | |
376 | */ | |
377 | void set_zoom(double scale, int offset); | |
378 | ||
379 | /** | |
380 | * Find a tick spacing and number formatting that does not cause | |
381 | * the values to collide. | |
382 | */ | |
383 | void calculate_tick_spacing(); | |
384 | ||
385 | void adjust_top_margin(); | |
386 | ||
387 | void update_scroll(); | |
388 | ||
389 | void reset_scroll(); | |
390 | ||
391 | void set_scroll_default(); | |
392 | ||
393 | void determine_if_header_was_shrunk(); | |
394 | ||
395 | void resize_header_to_fit(); | |
396 | ||
397 | void update_layout(); | |
398 | ||
399 | TraceTreeItemOwner* find_prevalent_trace_group( | |
400 | const shared_ptr<sigrok::ChannelGroup> &group, | |
401 | const unordered_map<shared_ptr<data::SignalBase>, | |
402 | shared_ptr<Signal> > &signal_map); | |
403 | ||
404 | static vector< shared_ptr<Trace> > | |
405 | extract_new_traces_for_channels( | |
406 | const vector< shared_ptr<sigrok::Channel> > &channels, | |
407 | const unordered_map<shared_ptr<data::SignalBase>, | |
408 | shared_ptr<Signal> > &signal_map, | |
409 | set< shared_ptr<Trace> > &add_list); | |
410 | ||
411 | void determine_time_unit(); | |
412 | ||
413 | bool eventFilter(QObject *object, QEvent *event); | |
414 | ||
415 | virtual void contextMenuEvent(QContextMenuEvent *event); | |
416 | ||
417 | void resizeEvent(QResizeEvent *event); | |
418 | ||
419 | void update_hover_point(); | |
420 | ||
421 | public: | |
422 | void row_item_appearance_changed(bool label, bool content); | |
423 | void time_item_appearance_changed(bool label, bool content); | |
424 | ||
425 | void extents_changed(bool horz, bool vert); | |
426 | ||
427 | private Q_SLOTS: | |
428 | ||
429 | void on_signal_name_changed(); | |
430 | void on_splitter_moved(); | |
431 | ||
432 | void on_zoom_in_shortcut_triggered(); | |
433 | void on_zoom_out_shortcut_triggered(); | |
434 | void on_scroll_to_start_shortcut_triggered(); | |
435 | void on_scroll_to_end_shortcut_triggered(); | |
436 | ||
437 | void h_scroll_value_changed(int value); | |
438 | void v_scroll_value_changed(); | |
439 | ||
440 | void signals_changed(); | |
441 | void capture_state_updated(int state); | |
442 | ||
443 | void on_new_segment(int new_segment_id); | |
444 | void on_segment_completed(int new_segment_id); | |
445 | void on_segment_changed(int segment); | |
446 | ||
447 | void on_settingViewTriggerIsZeroTime_changed(const QVariant new_value); | |
448 | ||
449 | virtual void perform_delayed_view_update(); | |
450 | ||
451 | void process_sticky_events(); | |
452 | ||
453 | /** | |
454 | * Sets the 'offset_' and ruler_offset_ members and emits the 'offset_changed' | |
455 | * signal if needed. | |
456 | */ | |
457 | void set_offset(const pv::util::Timestamp& offset, bool force_update = false); | |
458 | ||
459 | /** | |
460 | * Sets the 'scale_' member and emits the 'scale_changed' | |
461 | * signal if needed. | |
462 | */ | |
463 | void set_scale(double scale); | |
464 | ||
465 | /** | |
466 | * Sets the 'tick_prefix_' member and emits the 'tick_prefix_changed' | |
467 | * signal if needed. | |
468 | */ | |
469 | void set_tick_prefix(pv::util::SIPrefix tick_prefix); | |
470 | ||
471 | /** | |
472 | * Sets the 'tick_precision_' member and emits the 'tick_precision_changed' | |
473 | * signal if needed. | |
474 | */ | |
475 | void set_tick_precision(unsigned tick_precision); | |
476 | ||
477 | /** | |
478 | * Sets the 'tick_period_' member and emits the 'tick_period_changed' | |
479 | * signal if needed. | |
480 | */ | |
481 | void set_tick_period(const pv::util::Timestamp& tick_period); | |
482 | ||
483 | /** | |
484 | * Sets the 'time_unit' member and emits the 'time_unit_changed' | |
485 | * signal if needed. | |
486 | */ | |
487 | void set_time_unit(pv::util::TimeUnit time_unit); | |
488 | ||
489 | /** | |
490 | * Sets the current segment with the first segment starting at 0. | |
491 | */ | |
492 | void set_current_segment(uint32_t segment_id); | |
493 | ||
494 | private: | |
495 | CustomScrollArea *scrollarea_; | |
496 | Viewport *viewport_; | |
497 | Ruler *ruler_; | |
498 | Header *header_; | |
499 | QSplitter *splitter_; | |
500 | ||
501 | QShortcut *zoom_in_shortcut_, *zoom_in_shortcut_2_; | |
502 | QShortcut *zoom_out_shortcut_, *zoom_out_shortcut_2_; | |
503 | QShortcut *home_shortcut_, *end_shortcut_; | |
504 | ||
505 | unordered_set< shared_ptr<Signal> > signals_; | |
506 | ||
507 | #ifdef ENABLE_DECODE | |
508 | vector< shared_ptr<DecodeTrace> > decode_traces_; | |
509 | #endif | |
510 | ||
511 | Trace::SegmentDisplayMode segment_display_mode_; | |
512 | ||
513 | /// Signals whether the user can change the currently shown segment. | |
514 | bool segment_selectable_; | |
515 | ||
516 | /// The view time scale in seconds per pixel. | |
517 | double scale_; | |
518 | ||
519 | /// The internal view version of the time offset in seconds. | |
520 | pv::util::Timestamp offset_; | |
521 | /// The ruler version of the time offset in seconds. | |
522 | pv::util::Timestamp ruler_offset_; | |
523 | /// The offset of the zero point in seconds. | |
524 | pv::util::Timestamp zero_offset_; | |
525 | ||
526 | bool updating_scroll_; | |
527 | bool settings_restored_; | |
528 | bool header_was_shrunk_; | |
529 | ||
530 | bool sticky_scrolling_; | |
531 | bool colored_bg_; | |
532 | bool always_zoom_to_fit_; | |
533 | ||
534 | pv::util::Timestamp tick_period_; | |
535 | pv::util::SIPrefix tick_prefix_; | |
536 | unsigned int minor_tick_count_; | |
537 | unsigned int tick_precision_; | |
538 | util::TimeUnit time_unit_; | |
539 | ||
540 | bool show_cursors_; | |
541 | shared_ptr<CursorPair> cursors_; | |
542 | ||
543 | list< shared_ptr<Flag> > flags_; | |
544 | char next_flag_text_; | |
545 | ||
546 | vector< shared_ptr<TriggerMarker> > trigger_markers_; | |
547 | ||
548 | QWidget* hover_widget_; | |
549 | QPoint hover_point_; | |
550 | shared_ptr<Signal> signal_under_mouse_cursor_; | |
551 | uint16_t snap_distance_; | |
552 | ||
553 | unsigned int sticky_events_; | |
554 | QTimer lazy_event_handler_; | |
555 | ||
556 | // This is true when the defaults couldn't be set due to insufficient info | |
557 | bool scroll_needs_defaults_; | |
558 | ||
559 | // A nonzero value indicates the v offset to restore. See View::resizeEvent() | |
560 | int saved_v_offset_; | |
561 | ||
562 | // These are used to determine whether the view was altered after acq started | |
563 | double scale_at_acq_start_; | |
564 | pv::util::Timestamp offset_at_acq_start_; | |
565 | ||
566 | // Used to suppress performing a "zoom to fit" when the session stops. This | |
567 | // is needed when the view's settings are restored before acquisition ends. | |
568 | // In that case we want to keep the restored settings, not have a "zoom to fit" | |
569 | // mess them up. | |
570 | bool suppress_zoom_to_fit_after_acq_; | |
571 | }; | |
572 | ||
573 | } // namespace trace | |
574 | } // namespace views | |
575 | } // namespace pv | |
576 | ||
577 | #endif // PULSEVIEW_PV_VIEWS_TRACEVIEW_VIEW_HPP |