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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, QWidget *parent = nullptr); | |
104 | ||
105 | ~View(); | |
106 | ||
107 | /** | |
108 | * Resets the view to its default state after construction. It does however | |
109 | * not reset the signal bases or any other connections with the session. | |
110 | */ | |
111 | virtual void reset_view_state(); | |
112 | ||
113 | Session& session(); // This method is needed for TraceTreeItemOwner, not ViewBase | |
114 | const Session& session() const; // This method is needed for TraceTreeItemOwner, not ViewBase | |
115 | ||
116 | /** | |
117 | * Returns the signals contained in this view. | |
118 | */ | |
119 | unordered_set< shared_ptr<Signal> > signals() const; | |
120 | ||
121 | virtual void clear_signals(); | |
122 | ||
123 | void add_signal(const shared_ptr<Signal> signal); | |
124 | ||
125 | #ifdef ENABLE_DECODE | |
126 | virtual void clear_decode_signals(); | |
127 | ||
128 | virtual void add_decode_signal(shared_ptr<data::DecodeSignal> signal); | |
129 | ||
130 | virtual void remove_decode_signal(shared_ptr<data::DecodeSignal> signal); | |
131 | #endif | |
132 | ||
133 | shared_ptr<Signal> get_signal_under_mouse_cursor() const; | |
134 | ||
135 | /** | |
136 | * Returns the view of the owner. | |
137 | */ | |
138 | virtual View* view(); | |
139 | ||
140 | /** | |
141 | * Returns the view of the owner. | |
142 | */ | |
143 | virtual const View* view() const; | |
144 | ||
145 | Viewport* viewport(); | |
146 | ||
147 | const Viewport* viewport() const; | |
148 | ||
149 | const Ruler* ruler() const; | |
150 | ||
151 | virtual void save_settings(QSettings &settings) const; | |
152 | ||
153 | virtual void restore_settings(QSettings &settings); | |
154 | ||
155 | /** | |
156 | * Gets a list of time markers. | |
157 | */ | |
158 | vector< shared_ptr<TimeItem> > time_items() const; | |
159 | ||
160 | /** | |
161 | * Returns the view time scale in seconds per pixel. | |
162 | */ | |
163 | double scale() const; | |
164 | ||
165 | /** | |
166 | * Returns the internal view version of the time offset of the left edge | |
167 | * of the view in seconds. | |
168 | */ | |
169 | const pv::util::Timestamp& offset() const; | |
170 | ||
171 | /** | |
172 | * Returns the ruler version of the time offset of the left edge | |
173 | * of the view in seconds. | |
174 | */ | |
175 | const pv::util::Timestamp& ruler_offset() const; | |
176 | ||
177 | void set_zero_position(const pv::util::Timestamp& position); | |
178 | ||
179 | void reset_zero_position(); | |
180 | ||
181 | pv::util::Timestamp zero_offset() const; | |
182 | ||
183 | /** | |
184 | * Returns the vertical scroll offset. | |
185 | */ | |
186 | int owner_visual_v_offset() const; | |
187 | ||
188 | /** | |
189 | * Sets the visual v-offset. | |
190 | */ | |
191 | void set_v_offset(int offset); | |
192 | ||
193 | /** | |
194 | * Sets the visual h-offset. | |
195 | */ | |
196 | void set_h_offset(int offset); | |
197 | ||
198 | /** | |
199 | * Gets the length of the horizontal scrollbar. | |
200 | */ | |
201 | int get_h_scrollbar_maximum() const; | |
202 | ||
203 | /** | |
204 | * Returns the SI prefix to apply to the graticule time markings. | |
205 | */ | |
206 | pv::util::SIPrefix tick_prefix() const; | |
207 | ||
208 | /** | |
209 | * Returns the number of fractional digits shown for the time markings. | |
210 | */ | |
211 | unsigned int tick_precision() const; | |
212 | ||
213 | /** | |
214 | * Returns period of the graticule time markings. | |
215 | */ | |
216 | const pv::util::Timestamp& tick_period() const; | |
217 | ||
218 | /** | |
219 | * Returns number of minor division ticks per time marking. | |
220 | */ | |
221 | unsigned int minor_tick_count() const; | |
222 | ||
223 | /** | |
224 | * Returns the unit of time currently used. | |
225 | */ | |
226 | util::TimeUnit time_unit() const; | |
227 | ||
228 | /** | |
229 | * Returns the number of nested parents that this row item owner has. | |
230 | */ | |
231 | unsigned int depth() const; | |
232 | ||
233 | /** | |
234 | * Returns the currently displayed segment, starting at 0. | |
235 | */ | |
236 | uint32_t current_segment() const; | |
237 | ||
238 | /** | |
239 | * Returns whether the currently shown segment can be influenced | |
240 | * (selected) or not. | |
241 | */ | |
242 | bool segment_is_selectable() const; | |
243 | ||
244 | Trace::SegmentDisplayMode segment_display_mode() const; | |
245 | void set_segment_display_mode(Trace::SegmentDisplayMode mode); | |
246 | ||
247 | void zoom(double steps); | |
248 | void zoom(double steps, int offset); | |
249 | ||
250 | void zoom_fit(bool gui_state); | |
251 | ||
252 | /** | |
253 | * Sets the scale and offset. | |
254 | * @param scale The new view scale in seconds per pixel. | |
255 | * @param offset The view time offset in seconds. | |
256 | */ | |
257 | void set_scale_offset(double scale, const pv::util::Timestamp& offset); | |
258 | ||
259 | set< shared_ptr<pv::data::SignalData> > get_visible_data() const; | |
260 | ||
261 | pair<pv::util::Timestamp, pv::util::Timestamp> get_time_extents() const; | |
262 | ||
263 | /** | |
264 | * Enables or disables colored trace backgrounds. If they're not | |
265 | * colored then they will use alternating colors. | |
266 | */ | |
267 | void enable_colored_bg(bool state); | |
268 | ||
269 | /** | |
270 | * Returns true if the trace background should be drawn with a colored background. | |
271 | */ | |
272 | bool colored_bg() const; | |
273 | ||
274 | /** | |
275 | * Enable or disable showing sampling points. | |
276 | */ | |
277 | void enable_show_sampling_points(bool state); | |
278 | ||
279 | /** | |
280 | * Enable or disable showing the analog minor grid. | |
281 | */ | |
282 | void enable_show_analog_minor_grid(bool state); | |
283 | ||
284 | /** | |
285 | * Returns true if cursors are displayed. false otherwise. | |
286 | */ | |
287 | bool cursors_shown() const; | |
288 | ||
289 | /** | |
290 | * Shows or hides the cursors. | |
291 | */ | |
292 | void show_cursors(bool show = true); | |
293 | ||
294 | /** | |
295 | * Sets the cursors to the given offsets. You will still have to call show_cursors separately. | |
296 | */ | |
297 | void set_cursors(pv::util::Timestamp& first, pv::util::Timestamp& second); | |
298 | ||
299 | /** | |
300 | * Moves the cursors to a convenient position in the view. | |
301 | */ | |
302 | void centre_cursors(); | |
303 | ||
304 | /** | |
305 | * Returns a reference to the pair of cursors. | |
306 | */ | |
307 | shared_ptr<CursorPair> cursors() const; | |
308 | ||
309 | /** | |
310 | * Adds a new flag at a specified time. | |
311 | */ | |
312 | shared_ptr<Flag> add_flag(const pv::util::Timestamp& time); | |
313 | ||
314 | /** | |
315 | * Removes a flag from the list. | |
316 | */ | |
317 | void remove_flag(shared_ptr<Flag> flag); | |
318 | ||
319 | /** | |
320 | * Gets the list of flags. | |
321 | */ | |
322 | vector< shared_ptr<Flag> > flags() const; | |
323 | ||
324 | const QPoint& hover_point() const; | |
325 | const QWidget* hover_widget() const; | |
326 | ||
327 | /** | |
328 | * Determines the closest level change (i.e. edge) to a given point, which | |
329 | * is useful for e.g. the "snap to edge" functionality. | |
330 | * | |
331 | * @param p The current position of the mouse cursor | |
332 | * @return The sample number of the nearest level change or -1 if none | |
333 | */ | |
334 | int64_t get_nearest_level_change(const QPoint &p); | |
335 | ||
336 | void restack_all_trace_tree_items(); | |
337 | ||
338 | int header_width() const; | |
339 | ||
340 | void on_setting_changed(const QString &key, const QVariant &value); | |
341 | ||
342 | Q_SIGNALS: | |
343 | void hover_point_changed(const QWidget* widget, const QPoint &hp); | |
344 | ||
345 | void selection_changed(); | |
346 | ||
347 | /// Emitted when the offset changed. | |
348 | void offset_changed(); | |
349 | ||
350 | /// Emitted when the scale changed. | |
351 | void scale_changed(); | |
352 | ||
353 | void sticky_scrolling_changed(bool state); | |
354 | ||
355 | void always_zoom_to_fit_changed(bool state); | |
356 | ||
357 | /// Emitted when the tick_prefix changed. | |
358 | void tick_prefix_changed(); | |
359 | ||
360 | /// Emitted when the tick_precision changed. | |
361 | void tick_precision_changed(); | |
362 | ||
363 | /// Emitted when the tick_period changed. | |
364 | void tick_period_changed(); | |
365 | ||
366 | /// Emitted when the time_unit changed. | |
367 | void time_unit_changed(); | |
368 | ||
369 | /// Emitted when the currently selected segment changed | |
370 | void segment_changed(int segment_id); | |
371 | ||
372 | /// Emitted when the multi-segment display mode changed | |
373 | /// @param mode is a value of Trace::SegmentDisplayMode | |
374 | void segment_display_mode_changed(int mode, bool segment_selectable); | |
375 | ||
376 | /// Emitted when the cursors are shown/hidden | |
377 | void cursor_state_changed(bool show); | |
378 | ||
379 | public Q_SLOTS: | |
380 | void trigger_event(int segment_id, util::Timestamp location); | |
381 | ||
382 | private: | |
383 | void get_scroll_layout(double &length, pv::util::Timestamp &offset) const; | |
384 | ||
385 | /** | |
386 | * Simultaneously sets the zoom and offset. | |
387 | * @param scale The scale to set the view to in seconds per pixel. This | |
388 | * value is clamped between MinScale and MaxScale. | |
389 | * @param offset The offset of the left edge of the view in seconds. | |
390 | */ | |
391 | void set_zoom(double scale, int offset); | |
392 | ||
393 | /** | |
394 | * Find a tick spacing and number formatting that does not cause | |
395 | * the values to collide. | |
396 | */ | |
397 | void calculate_tick_spacing(); | |
398 | ||
399 | void adjust_top_margin(); | |
400 | ||
401 | void update_scroll(); | |
402 | ||
403 | void reset_scroll(); | |
404 | ||
405 | void set_scroll_default(); | |
406 | ||
407 | void determine_if_header_was_shrunk(); | |
408 | ||
409 | void resize_header_to_fit(); | |
410 | ||
411 | void update_layout(); | |
412 | ||
413 | TraceTreeItemOwner* find_prevalent_trace_group( | |
414 | const shared_ptr<sigrok::ChannelGroup> &group, | |
415 | const unordered_map<shared_ptr<data::SignalBase>, | |
416 | shared_ptr<Signal> > &signal_map); | |
417 | ||
418 | static vector< shared_ptr<Trace> > | |
419 | extract_new_traces_for_channels( | |
420 | const vector< shared_ptr<sigrok::Channel> > &channels, | |
421 | const unordered_map<shared_ptr<data::SignalBase>, | |
422 | shared_ptr<Signal> > &signal_map, | |
423 | set< shared_ptr<Trace> > &add_list); | |
424 | ||
425 | void determine_time_unit(); | |
426 | ||
427 | bool eventFilter(QObject *object, QEvent *event); | |
428 | ||
429 | virtual void contextMenuEvent(QContextMenuEvent *event); | |
430 | ||
431 | void resizeEvent(QResizeEvent *event); | |
432 | ||
433 | void update_hover_point(); | |
434 | ||
435 | public: | |
436 | void row_item_appearance_changed(bool label, bool content); | |
437 | void time_item_appearance_changed(bool label, bool content); | |
438 | ||
439 | void extents_changed(bool horz, bool vert); | |
440 | ||
441 | private Q_SLOTS: | |
442 | ||
443 | void on_signal_name_changed(); | |
444 | void on_splitter_moved(); | |
445 | ||
446 | void on_zoom_in_shortcut_triggered(); | |
447 | void on_zoom_out_shortcut_triggered(); | |
448 | void on_scroll_to_start_shortcut_triggered(); | |
449 | void on_scroll_to_end_shortcut_triggered(); | |
450 | ||
451 | void h_scroll_value_changed(int value); | |
452 | void v_scroll_value_changed(); | |
453 | ||
454 | void signals_changed(); | |
455 | void capture_state_updated(int state); | |
456 | ||
457 | void on_new_segment(int new_segment_id); | |
458 | void on_segment_completed(int new_segment_id); | |
459 | void on_segment_changed(int segment); | |
460 | ||
461 | void on_settingViewTriggerIsZeroTime_changed(const QVariant new_value); | |
462 | ||
463 | virtual void perform_delayed_view_update(); | |
464 | ||
465 | void process_sticky_events(); | |
466 | ||
467 | /** | |
468 | * Sets the 'offset_' and ruler_offset_ members and emits the 'offset_changed' | |
469 | * signal if needed. | |
470 | */ | |
471 | void set_offset(const pv::util::Timestamp& offset, bool force_update = false); | |
472 | ||
473 | /** | |
474 | * Sets the 'scale_' member and emits the 'scale_changed' | |
475 | * signal if needed. | |
476 | */ | |
477 | void set_scale(double scale); | |
478 | ||
479 | /** | |
480 | * Sets the 'tick_prefix_' member and emits the 'tick_prefix_changed' | |
481 | * signal if needed. | |
482 | */ | |
483 | void set_tick_prefix(pv::util::SIPrefix tick_prefix); | |
484 | ||
485 | /** | |
486 | * Sets the 'tick_precision_' member and emits the 'tick_precision_changed' | |
487 | * signal if needed. | |
488 | */ | |
489 | void set_tick_precision(unsigned tick_precision); | |
490 | ||
491 | /** | |
492 | * Sets the 'tick_period_' member and emits the 'tick_period_changed' | |
493 | * signal if needed. | |
494 | */ | |
495 | void set_tick_period(const pv::util::Timestamp& tick_period); | |
496 | ||
497 | /** | |
498 | * Sets the 'time_unit' member and emits the 'time_unit_changed' | |
499 | * signal if needed. | |
500 | */ | |
501 | void set_time_unit(pv::util::TimeUnit time_unit); | |
502 | ||
503 | /** | |
504 | * Sets the current segment with the first segment starting at 0. | |
505 | */ | |
506 | void set_current_segment(uint32_t segment_id); | |
507 | ||
508 | private: | |
509 | CustomScrollArea *scrollarea_; | |
510 | Viewport *viewport_; | |
511 | Ruler *ruler_; | |
512 | Header *header_; | |
513 | QSplitter *splitter_; | |
514 | ||
515 | QShortcut *zoom_in_shortcut_, *zoom_in_shortcut_2_; | |
516 | QShortcut *zoom_out_shortcut_, *zoom_out_shortcut_2_; | |
517 | QShortcut *home_shortcut_, *end_shortcut_; | |
518 | ||
519 | unordered_set< shared_ptr<Signal> > signals_; | |
520 | ||
521 | #ifdef ENABLE_DECODE | |
522 | vector< shared_ptr<DecodeTrace> > decode_traces_; | |
523 | #endif | |
524 | ||
525 | Trace::SegmentDisplayMode segment_display_mode_; | |
526 | ||
527 | /// Signals whether the user can change the currently shown segment. | |
528 | bool segment_selectable_; | |
529 | ||
530 | /// The view time scale in seconds per pixel. | |
531 | double scale_; | |
532 | ||
533 | /// The internal view version of the time offset in seconds. | |
534 | pv::util::Timestamp offset_; | |
535 | /// The ruler version of the time offset in seconds. | |
536 | pv::util::Timestamp ruler_offset_; | |
537 | /// The offset of the zero point in seconds. | |
538 | pv::util::Timestamp zero_offset_; | |
539 | ||
540 | bool updating_scroll_; | |
541 | bool settings_restored_; | |
542 | bool header_was_shrunk_; | |
543 | ||
544 | bool sticky_scrolling_; | |
545 | bool colored_bg_; | |
546 | bool always_zoom_to_fit_; | |
547 | ||
548 | pv::util::Timestamp tick_period_; | |
549 | pv::util::SIPrefix tick_prefix_; | |
550 | unsigned int minor_tick_count_; | |
551 | unsigned int tick_precision_; | |
552 | util::TimeUnit time_unit_; | |
553 | ||
554 | bool show_cursors_; | |
555 | shared_ptr<CursorPair> cursors_; | |
556 | ||
557 | list< shared_ptr<Flag> > flags_; | |
558 | char next_flag_text_; | |
559 | ||
560 | vector< shared_ptr<TriggerMarker> > trigger_markers_; | |
561 | ||
562 | QWidget* hover_widget_; | |
563 | QPoint hover_point_; | |
564 | shared_ptr<Signal> signal_under_mouse_cursor_; | |
565 | uint16_t snap_distance_; | |
566 | ||
567 | unsigned int sticky_events_; | |
568 | QTimer lazy_event_handler_; | |
569 | ||
570 | // This is true when the defaults couldn't be set due to insufficient info | |
571 | bool scroll_needs_defaults_; | |
572 | ||
573 | // A nonzero value indicates the v offset to restore. See View::resizeEvent() | |
574 | int saved_v_offset_; | |
575 | ||
576 | // These are used to determine whether the view was altered after acq started | |
577 | double scale_at_acq_start_; | |
578 | pv::util::Timestamp offset_at_acq_start_; | |
579 | ||
580 | // Used to suppress performing a "zoom to fit" when the session stops. This | |
581 | // is needed when the view's settings are restored before acquisition ends. | |
582 | // In that case we want to keep the restored settings, not have a "zoom to fit" | |
583 | // mess them up. | |
584 | bool suppress_zoom_to_fit_after_acq_; | |
585 | }; | |
586 | ||
587 | } // namespace trace | |
588 | } // namespace views | |
589 | } // namespace pv | |
590 | ||
591 | #endif // PULSEVIEW_PV_VIEWS_TRACEVIEW_VIEW_HPP |