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[pulseview.git] / pv / views / trace / view.cpp
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adb4b10c 1/*
b3f22de0 2 * This file is part of the PulseView project.
adb4b10c
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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
efdec55a 17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
adb4b10c
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18 */
19
269528f5 20#ifdef ENABLE_DECODE
4e5a4405 21#include <libsigrokdecode/libsigrokdecode.h>
269528f5 22#endif
4e5a4405 23
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24#include <extdef.h>
25
cf124e47 26#include <algorithm>
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27#include <cassert>
28#include <climits>
29#include <cmath>
3a21afa6 30#include <iostream>
cf124e47 31#include <iterator>
7ff0145f 32#include <unordered_set>
adb4b10c 33
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34#include <boost/archive/text_iarchive.hpp>
35#include <boost/archive/text_oarchive.hpp>
36#include <boost/serialization/serialization.hpp>
e71eb81c 37
361c560e 38#include <QApplication>
adb4b10c 39#include <QEvent>
361c560e 40#include <QFontMetrics>
d9b55cc8 41#include <QMenu>
cbd80f64 42#include <QMouseEvent>
adb4b10c 43#include <QScrollBar>
33094993 44#include <QVBoxLayout>
adb4b10c 45
fe3a1c21 46#include <libsigrokcxx/libsigrokcxx.hpp>
448a72cf 47
574c568d 48#include "analogsignal.hpp"
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49#include "header.hpp"
50#include "logicsignal.hpp"
51#include "ruler.hpp"
52#include "signal.hpp"
53#include "tracegroup.hpp"
1a2288a1 54#include "triggermarker.hpp"
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55#include "view.hpp"
56#include "viewport.hpp"
adb4b10c 57
2acdb232 58#include "pv/data/logic.hpp"
f3d66e52 59#include "pv/data/logicsegment.hpp"
aca9aa83
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60#include "pv/devices/device.hpp"
61#include "pv/globalsettings.hpp"
62#include "pv/session.hpp"
361c560e 63#include "pv/util.hpp"
adb4b10c 64
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65#ifdef ENABLE_DECODE
66#include "decodetrace.hpp"
67#endif
68
1bc6525b 69using pv::data::SignalData;
f3d66e52 70using pv::data::Segment;
ef454ad5 71using pv::util::TimeUnit;
60d9b99a 72using pv::util::Timestamp;
361c560e 73
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74using std::back_inserter;
75using std::copy_if;
6f925ba9 76using std::count_if;
cf124e47 77using std::inserter;
819f4c25 78using std::max;
1bc6525b 79using std::make_pair;
769a79b5 80using std::make_shared;
819f4c25 81using std::min;
f6b6c9bf 82using std::numeric_limits;
1bc6525b 83using std::pair;
819f4c25 84using std::set;
cf124e47 85using std::set_difference;
f9abf97e 86using std::shared_ptr;
6f925ba9 87using std::stringstream;
448a72cf 88using std::unordered_map;
7ff0145f 89using std::unordered_set;
819f4c25 90using std::vector;
adb4b10c 91
cdf7bea7 92namespace pv {
f4e57597 93namespace views {
1573bf16 94namespace trace {
adb4b10c 95
60d9b99a
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96const Timestamp View::MaxScale("1e9");
97const Timestamp View::MinScale("1e-12");
adb4b10c 98
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99const int View::MaxScrollValue = INT_MAX / 2;
100
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101const int View::ScaleUnits[3] = {1, 2, 5};
102
f4e57597 103
33094993 104CustomScrollArea::CustomScrollArea(QWidget *parent) :
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105 QAbstractScrollArea(parent)
106{
107}
108
33094993 109bool CustomScrollArea::viewportEvent(QEvent *event)
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110{
111 switch (event->type()) {
112 case QEvent::Paint:
113 case QEvent::MouseButtonPress:
114 case QEvent::MouseButtonRelease:
115 case QEvent::MouseButtonDblClick:
116 case QEvent::MouseMove:
117 case QEvent::Wheel:
118 case QEvent::TouchBegin:
119 case QEvent::TouchUpdate:
120 case QEvent::TouchEnd:
121 return false;
122 default:
123 return QAbstractScrollArea::viewportEvent(event);
124 }
125}
126
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127View::View(Session &session, bool is_main_view, QWidget *parent) :
128 ViewBase(session, is_main_view, parent),
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129
130 // Note: Place defaults in View::reset_view_state(), not here
33094993 131 splitter_(new QSplitter()),
9f094349 132 header_was_shrunk_(false), // The splitter remains unchanged after a reset, so this goes here
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133 sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui()
134 scroll_needs_defaults_(true)
adb4b10c 135{
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136 QVBoxLayout *root_layout = new QVBoxLayout(this);
137 root_layout->setContentsMargins(0, 0, 0, 0);
138 root_layout->addWidget(splitter_);
139
140 viewport_ = new Viewport(*this);
141 scrollarea_ = new CustomScrollArea(splitter_);
142 scrollarea_->setViewport(viewport_);
143 scrollarea_->setFrameShape(QFrame::NoFrame);
144
145 ruler_ = new Ruler(*this);
146
147 header_ = new Header(*this);
c1a6513b 148 header_->setMinimumWidth(10); // So that the arrow tips show at least
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149
150 // We put the header into a simple layout so that we can add the top margin,
151 // allowing us to make it line up with the bottom of the ruler
152 QWidget *header_container = new QWidget();
153 header_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
154 QVBoxLayout *header_layout = new QVBoxLayout(header_container);
155 header_layout->setContentsMargins(0, ruler_->sizeHint().height(), 0, 0);
156 header_layout->addWidget(header_);
157
158 // To let the ruler and scrollarea be on the same split pane, we need a layout
159 QWidget *trace_container = new QWidget();
160 trace_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
161 QVBoxLayout *trace_layout = new QVBoxLayout(trace_container);
162 trace_layout->setSpacing(0); // We don't want space between the ruler and scrollarea
163 trace_layout->setContentsMargins(0, 0, 0, 0);
164 trace_layout->addWidget(ruler_);
165 trace_layout->addWidget(scrollarea_);
166
167 splitter_->addWidget(header_container);
168 splitter_->addWidget(trace_container);
169 splitter_->setHandleWidth(1); // Don't show a visible rubber band
170 splitter_->setCollapsible(0, false); // Prevent the header from collapsing
171 splitter_->setCollapsible(1, false); // Prevent the traces from collapsing
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172 splitter_->setStretchFactor(0, 0); // Prevent the panes from being resized
173 splitter_->setStretchFactor(1, 1); // when the entire view is resized
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174 splitter_->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
175
176 viewport_->installEventFilter(this);
177 ruler_->installEventFilter(this);
178 header_->installEventFilter(this);
179
180 // Set up settings and event handlers
24c29d4f 181 GlobalSettings settings;
641574bc 182 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
fb641801 183 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
24c29d4f 184
d0c0573b 185 GlobalSettings::add_change_handler(this);
451dc5f3 186
33094993 187 connect(scrollarea_->horizontalScrollBar(), SIGNAL(valueChanged(int)),
b16907d3 188 this, SLOT(h_scroll_value_changed(int)));
33094993 189 connect(scrollarea_->verticalScrollBar(), SIGNAL(valueChanged(int)),
f8400017 190 this, SLOT(v_scroll_value_changed()));
69dd2b03 191
8dbbc7f0 192 connect(header_, SIGNAL(selection_changed()),
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193 ruler_, SLOT(clear_selection()));
194 connect(ruler_, SIGNAL(selection_changed()),
8dbbc7f0 195 header_, SLOT(clear_selection()));
17348f85 196
8dbbc7f0 197 connect(header_, SIGNAL(selection_changed()),
8b454527 198 this, SIGNAL(selection_changed()));
819e2e95 199 connect(ruler_, SIGNAL(selection_changed()),
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200 this, SIGNAL(selection_changed()));
201
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202 connect(splitter_, SIGNAL(splitterMoved(int, int)),
203 this, SLOT(on_splitter_moved()));
204
8dbbc7f0 205 connect(&lazy_event_handler_, SIGNAL(timeout()),
32218d3e 206 this, SLOT(process_sticky_events()));
8dbbc7f0 207 lazy_event_handler_.setSingleShot(true);
32218d3e 208
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209 // Set up local keyboard shortcuts
210 zoom_in_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Plus), this,
211 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
212 zoom_in_shortcut_->setAutoRepeat(false);
213
214 zoom_out_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Minus), this,
215 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
216 zoom_out_shortcut_->setAutoRepeat(false);
217
218 zoom_in_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Up), this,
219 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
220 zoom_out_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Down), this,
221 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
222
223 home_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Home), this,
224 SLOT(on_scroll_to_start_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
225 home_shortcut_->setAutoRepeat(false);
226
227 end_shortcut_ = new QShortcut(QKeySequence(Qt::Key_End), this,
228 SLOT(on_scroll_to_end_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
229 end_shortcut_->setAutoRepeat(false);
230
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231 // Trigger the initial event manually. The default device has signals
232 // which were created before this object came into being
d873f4d6 233 signals_changed();
84a0d458 234
476ca5f4 235 // Make sure the transparent widgets are on the top
819e2e95 236 ruler_->raise();
8dbbc7f0 237 header_->raise();
361c560e 238
5a206446 239 reset_view_state();
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240}
241
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242View::~View()
243{
244 GlobalSettings::remove_change_handler(this);
245}
246
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247void View::reset_view_state()
248{
249 ViewBase::reset_view_state();
250
251 segment_display_mode_ = Trace::ShowLastSegmentOnly;
252 segment_selectable_ = false;
253 scale_ = 1e-3;
254 offset_ = 0;
255 ruler_offset_ = 0;
256 updating_scroll_ = false;
257 settings_restored_ = false;
258 always_zoom_to_fit_ = false;
259 tick_period_ = 0;
260 tick_prefix_ = pv::util::SIPrefix::yocto;
261 tick_precision_ = 0;
262 time_unit_ = util::TimeUnit::Time;
263 show_cursors_ = false;
264 cursors_ = make_shared<CursorPair>(*this);
265 next_flag_text_ = 'A';
266 trigger_markers_.clear();
581724de 267 hover_widget_ = nullptr;
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268 hover_point_ = QPoint(-1, -1);
269 scroll_needs_defaults_ = true;
270 saved_v_offset_ = 0;
271 scale_at_acq_start_ = 0;
272 offset_at_acq_start_ = 0;
273 suppress_zoom_to_fit_after_acq_ = false;
274
275 show_cursors_ = false;
e4e5a958 276 cursor_state_changed(show_cursors_);
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277 flags_.clear();
278
279 // Update the zoom state
280 calculate_tick_spacing();
281
282 // Make sure the standard bar's segment selector is in sync
283 set_segment_display_mode(segment_display_mode_);
284}
285
2b81ae46 286Session& View::session()
1d19ef83 287{
8dbbc7f0 288 return session_;
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289}
290
2b81ae46 291const Session& View::session() const
38eeddea 292{
8dbbc7f0 293 return session_;
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294}
295
6f925ba9 296unordered_set< shared_ptr<Signal> > View::signals() const
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297{
298 return signals_;
299}
300
301void View::clear_signals()
302{
5ed05b69 303 ViewBase::clear_signalbases();
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304 signals_.clear();
305}
306
f4e57597 307void View::add_signal(const shared_ptr<Signal> signal)
47e9e7bb 308{
5ed05b69 309 ViewBase::add_signalbase(signal->base());
47e9e7bb 310 signals_.insert(signal);
00c518d6 311
7daebd05 312 signal->set_segment_display_mode(segment_display_mode_);
8a603e13 313 signal->set_current_segment(current_segment_);
7daebd05 314
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315 connect(signal->base().get(), SIGNAL(name_changed(const QString&)),
316 this, SLOT(on_signal_name_changed()));
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317}
318
bb7dd726 319#ifdef ENABLE_DECODE
f4e57597 320void View::clear_decode_signals()
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321{
322 decode_traces_.clear();
323}
324
ad908057 325void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
bb7dd726 326{
f4e57597 327 shared_ptr<DecodeTrace> d(
ad908057 328 new DecodeTrace(session_, signal, decode_traces_.size()));
bb7dd726 329 decode_traces_.push_back(d);
00c518d6 330
7daebd05 331 d->set_segment_display_mode(segment_display_mode_);
8a603e13 332 d->set_current_segment(current_segment_);
7daebd05 333
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334 connect(signal.get(), SIGNAL(name_changed(const QString&)),
335 this, SLOT(on_signal_name_changed()));
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336}
337
ad908057 338void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
bb7dd726
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339{
340 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
ad908057 341 if ((*i)->base() == signal) {
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342 decode_traces_.erase(i);
343 signals_changed();
344 return;
345 }
346}
347#endif
348
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349shared_ptr<Signal> View::get_signal_under_mouse_cursor() const
350{
351 return signal_under_mouse_cursor_;
352}
353
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354View* View::view()
355{
356 return this;
357}
358
359const View* View::view() const
360{
361 return this;
362}
363
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364Viewport* View::viewport()
365{
8dbbc7f0 366 return viewport_;
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367}
368
369const Viewport* View::viewport() const
370{
8dbbc7f0 371 return viewport_;
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372}
373
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374const Ruler* View::ruler() const
375{
376 return ruler_;
377}
378
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379void View::save_settings(QSettings &settings) const
380{
381 settings.setValue("scale", scale_);
39ab01e7 382 settings.setValue("v_offset",
33094993 383 scrollarea_->verticalScrollBar()->sliderPosition());
3a21afa6 384
37849039 385 settings.setValue("splitter_state", splitter_->saveState());
89914a86 386 settings.setValue("segment_display_mode", segment_display_mode_);
37849039 387
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388 {
389 stringstream ss;
390 boost::archive::text_oarchive oa(ss);
391 oa << boost::serialization::make_nvp("offset", offset_);
392 settings.setValue("offset", QString::fromStdString(ss.str()));
393 }
3a21afa6 394
f4ab4b5c 395 for (const shared_ptr<Signal>& signal : signals_) {
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396 settings.beginGroup(signal->base()->internal_name());
397 signal->save_settings(settings);
398 settings.endGroup();
399 }
400}
401
402void View::restore_settings(QSettings &settings)
403{
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404 // Note: It is assumed that this function is only called once,
405 // immediately after restoring a previous session.
406
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407 if (settings.contains("scale"))
408 set_scale(settings.value("scale").toDouble());
409
410 if (settings.contains("offset")) {
411 util::Timestamp offset;
6f925ba9 412 stringstream ss;
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413 ss << settings.value("offset").toString().toStdString();
414
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415 try {
416 boost::archive::text_iarchive ia(ss);
417 ia >> boost::serialization::make_nvp("offset", offset);
418 // This also updates ruler_offset_
419 set_offset(offset);
16a832bc 420 } catch (boost::archive::archive_exception&) {
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421 qDebug() << "Could not restore the view offset";
422 }
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423 }
424
37849039
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425 if (settings.contains("splitter_state"))
426 splitter_->restoreState(settings.value("splitter_state").toByteArray());
427
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428 if (settings.contains("segment_display_mode"))
429 set_segment_display_mode(
430 (Trace::SegmentDisplayMode)(settings.value("segment_display_mode").toInt()));
431
f4e57597 432 for (shared_ptr<Signal> signal : signals_) {
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433 settings.beginGroup(signal->base()->internal_name());
434 signal->restore_settings(settings);
435 settings.endGroup();
436 }
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437
438 if (settings.contains("v_offset")) {
439 saved_v_offset_ = settings.value("v_offset").toInt();
440 set_v_offset(saved_v_offset_);
e62bee73 441 scroll_needs_defaults_ = false;
5f9b7de5 442 // Note: see eventFilter() for additional information
39ab01e7 443 }
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444
445 settings_restored_ = true;
28ceff25 446 suppress_zoom_to_fit_after_acq_ = true;
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447
448 // Update the ruler so that it uses the new scale
449 calculate_tick_spacing();
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450}
451
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452vector< shared_ptr<TimeItem> > View::time_items() const
453{
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454 const vector<shared_ptr<Flag>> f(flags());
455 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
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456
457 if (cursors_) {
458 items.push_back(cursors_);
459 items.push_back(cursors_->first());
460 items.push_back(cursors_->second());
461 }
1a2288a1 462
f4ab4b5c 463 for (auto& trigger_marker : trigger_markers_)
92ff2b60 464 items.push_back(trigger_marker);
1a2288a1 465
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466 return items;
467}
468
cdf7bea7 469double View::scale() const
adb4b10c 470{
8dbbc7f0 471 return scale_;
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472}
473
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474void View::set_scale(double scale)
475{
476 if (scale_ != scale) {
477 scale_ = scale;
25e734c8 478 scale_changed();
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479 }
480}
481
451dc5f3 482void View::set_offset(const pv::util::Timestamp& offset, bool force_update)
4b0af0b6 483{
451dc5f3 484 if ((offset_ != offset) || force_update) {
4b0af0b6 485 offset_ = offset;
fe68068b 486 ruler_offset_ = offset_ + zero_offset_;
25e734c8 487 offset_changed();
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488 }
489}
490
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491const Timestamp& View::offset() const
492{
493 return offset_;
494}
495
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496const Timestamp& View::ruler_offset() const
497{
498 return ruler_offset_;
499}
500
e23567ed 501void View::set_zero_position(const pv::util::Timestamp& position)
451dc5f3 502{
fe68068b 503 zero_offset_ = -position;
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504
505 // Force an immediate update of the offsets
506 set_offset(offset_, true);
507 ruler_->update();
508}
509
510void View::reset_zero_position()
511{
fe68068b 512 zero_offset_ = 0;
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513
514 // Force an immediate update of the offsets
515 set_offset(offset_, true);
516 ruler_->update();
517}
518
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519pv::util::Timestamp View::zero_offset() const
520{
521 return zero_offset_;
522}
523
7ff0145f 524int View::owner_visual_v_offset() const
adb4b10c 525{
33094993 526 return -scrollarea_->verticalScrollBar()->sliderPosition();
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527}
528
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529void View::set_v_offset(int offset)
530{
33094993 531 scrollarea_->verticalScrollBar()->setSliderPosition(offset);
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532 header_->update();
533 viewport_->update();
534}
535
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536void View::set_h_offset(int offset)
537{
538 scrollarea_->horizontalScrollBar()->setSliderPosition(offset);
539 header_->update();
540 viewport_->update();
541}
542
543int View::get_h_scrollbar_maximum() const
544{
545 return scrollarea_->horizontalScrollBar()->maximum();
546}
547
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548unsigned int View::depth() const
549{
550 return 0;
551}
552
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553uint32_t View::current_segment() const
554{
555 return current_segment_;
556}
557
d001f416 558pv::util::SIPrefix View::tick_prefix() const
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559{
560 return tick_prefix_;
561}
562
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563void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
564{
565 if (tick_prefix_ != tick_prefix) {
566 tick_prefix_ = tick_prefix;
25e734c8 567 tick_prefix_changed();
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568 }
569}
570
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571unsigned int View::tick_precision() const
572{
573 return tick_precision_;
574}
575
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576void View::set_tick_precision(unsigned tick_precision)
577{
578 if (tick_precision_ != tick_precision) {
579 tick_precision_ = tick_precision;
25e734c8 580 tick_precision_changed();
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581 }
582}
583
c677193d 584const pv::util::Timestamp& View::tick_period() const
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585{
586 return tick_period_;
587}
588
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589unsigned int View::minor_tick_count() const
590{
591 return minor_tick_count_;
592}
593
c677193d 594void View::set_tick_period(const pv::util::Timestamp& tick_period)
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595{
596 if (tick_period_ != tick_period) {
597 tick_period_ = tick_period;
25e734c8 598 tick_period_changed();
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599 }
600}
601
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602TimeUnit View::time_unit() const
603{
604 return time_unit_;
605}
606
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607void View::set_time_unit(pv::util::TimeUnit time_unit)
608{
609 if (time_unit_ != time_unit) {
610 time_unit_ = time_unit;
25e734c8 611 time_unit_changed();
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612 }
613}
614
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615void View::set_current_segment(uint32_t segment_id)
616{
617 current_segment_ = segment_id;
618
f4ab4b5c 619 for (const shared_ptr<Signal>& signal : signals_)
558ad6ce 620 signal->set_current_segment(current_segment_);
57c04e78 621#ifdef ENABLE_DECODE
f4ab4b5c 622 for (shared_ptr<DecodeTrace>& dt : decode_traces_)
558ad6ce 623 dt->set_current_segment(current_segment_);
57c04e78 624#endif
558ad6ce 625
451dc5f3
SA
626 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
627
7ea2a4ff 628 trigger_markers_.clear();
451dc5f3 629 for (util::Timestamp timestamp : triggers)
7ea2a4ff
SA
630 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, timestamp));
631
451dc5f3
SA
632 // When enabled, the first trigger for this segment is used as the zero position
633 GlobalSettings settings;
634 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
635
636 if (trigger_is_zero_time && (triggers.size() > 0))
637 set_zero_position(triggers.front());
638
558ad6ce 639 viewport_->update();
89914a86
SA
640
641 segment_changed(segment_id);
558ad6ce
SA
642}
643
7daebd05
SA
644bool View::segment_is_selectable() const
645{
646 return segment_selectable_;
647}
648
89914a86
SA
649Trace::SegmentDisplayMode View::segment_display_mode() const
650{
651 return segment_display_mode_;
652}
653
7daebd05
SA
654void View::set_segment_display_mode(Trace::SegmentDisplayMode mode)
655{
89914a86
SA
656 segment_display_mode_ = mode;
657
f4ab4b5c 658 for (const shared_ptr<Signal>& signal : signals_)
7daebd05
SA
659 signal->set_segment_display_mode(mode);
660
89914a86
SA
661 uint32_t last_segment = session_.get_segment_count() - 1;
662
663 switch (mode) {
664 case Trace::ShowLastSegmentOnly:
665 if (current_segment_ != last_segment)
666 set_current_segment(last_segment);
667 break;
668
669 case Trace::ShowLastCompleteSegmentOnly:
670 // Do nothing if we only have one segment so far
671 if (last_segment > 0) {
672 // If the last segment isn't complete, the previous one must be
673 uint32_t segment_id =
674 (session_.all_segments_complete(last_segment)) ?
675 last_segment : last_segment - 1;
676
677 if (current_segment_ != segment_id)
678 set_current_segment(segment_id);
679 }
680 break;
681
682 case Trace::ShowSingleSegmentOnly:
683 case Trace::ShowAllSegments:
684 case Trace::ShowAccumulatedIntensity:
685 default:
686 // Current segment remains as-is
687 break;
688 }
7daebd05
SA
689
690 segment_selectable_ = true;
691
89914a86 692 if ((mode == Trace::ShowAllSegments) || (mode == Trace::ShowAccumulatedIntensity))
7daebd05
SA
693 segment_selectable_ = false;
694
89914a86
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695 viewport_->update();
696
697 segment_display_mode_changed((int)mode, segment_selectable_);
7daebd05
SA
698}
699
cdf7bea7 700void View::zoom(double steps)
adb4b10c 701{
8dbbc7f0 702 zoom(steps, viewport_->width() / 2);
adb4b10c
JH
703}
704
17c0f398
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705void View::zoom(double steps, int offset)
706{
c063290a 707 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
17c0f398
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708}
709
ce11b2ea 710void View::zoom_fit(bool gui_state)
ca46b534 711{
ce11b2ea
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712 // Act as one-shot when stopped, toggle along with the GUI otherwise
713 if (session_.get_capture_state() == Session::Stopped) {
714 always_zoom_to_fit_ = false;
715 always_zoom_to_fit_changed(false);
716 } else {
717 always_zoom_to_fit_ = gui_state;
718 always_zoom_to_fit_changed(gui_state);
719 }
720
60d9b99a
JS
721 const pair<Timestamp, Timestamp> extents = get_time_extents();
722 const Timestamp delta = extents.second - extents.first;
723 if (delta < Timestamp("1e-12"))
ca46b534
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724 return;
725
8dbbc7f0
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726 assert(viewport_);
727 const int w = viewport_->width();
ca46b534
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728 if (w <= 0)
729 return;
730
60d9b99a
JS
731 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
732 set_scale_offset(scale.convert_to<double>(), extents.first);
ca46b534
JH
733}
734
60d9b99a 735void View::set_scale_offset(double scale, const Timestamp& offset)
adb4b10c 736{
ce11b2ea
SA
737 // Disable sticky scrolling / always zoom to fit when acquisition runs
738 // and user drags the viewport
c7b03d9d 739 if ((scale_ == scale) && (offset_ != offset) &&
ce11b2ea
SA
740 (session_.get_capture_state() == Session::Running)) {
741
742 if (sticky_scrolling_) {
743 sticky_scrolling_ = false;
744 sticky_scrolling_changed(false);
745 }
746
747 if (always_zoom_to_fit_) {
748 always_zoom_to_fit_ = false;
749 always_zoom_to_fit_changed(false);
750 }
c7b03d9d
SA
751 }
752
4b0af0b6
JS
753 set_scale(scale);
754 set_offset(offset);
ccdd3ef5 755
361c560e
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756 calculate_tick_spacing();
757
adb4b10c 758 update_scroll();
8dbbc7f0 759 ruler_->update();
8dbbc7f0 760 viewport_->update();
adb4b10c
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761}
762
1bc6525b
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763set< shared_ptr<SignalData> > View::get_visible_data() const
764{
1bc6525b
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765 // Make a set of all the visible data objects
766 set< shared_ptr<SignalData> > visible_data;
f4ab4b5c 767 for (const shared_ptr<Signal>& sig : signals_)
1bc6525b
JH
768 if (sig->enabled())
769 visible_data.insert(sig->data());
770
771 return visible_data;
772}
773
60d9b99a 774pair<Timestamp, Timestamp> View::get_time_extents() const
1bc6525b 775{
60d9b99a 776 boost::optional<Timestamp> left_time, right_time;
7f4038d6 777 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
f4ab4b5c 778 for (const shared_ptr<SignalData>& d : visible_data) {
c063290a 779 const vector< shared_ptr<Segment> > segments = d->segments();
f4ab4b5c 780 for (const shared_ptr<Segment>& s : segments) {
ff008de6
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781 double samplerate = s->samplerate();
782 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
783
60d9b99a
JS
784 const Timestamp start_time = s->start_time();
785 left_time = left_time ?
786 min(*left_time, start_time) :
9f094349 787 start_time;
60d9b99a
JS
788 right_time = right_time ?
789 max(*right_time, start_time + d->max_sample_count() / samplerate) :
9f094349 790 start_time + d->max_sample_count() / samplerate;
7f4038d6 791 }
1bc6525b
JH
792 }
793
60d9b99a
JS
794 if (!left_time || !right_time)
795 return make_pair(0, 0);
7f4038d6 796
60d9b99a
JS
797 assert(*left_time < *right_time);
798 return make_pair(*left_time, *right_time);
1bc6525b
JH
799}
800
051ba3b3
UH
801void View::enable_show_sampling_points(bool state)
802{
803 (void)state;
804
805 viewport_->update();
806}
807
8ad61f40
UH
808void View::enable_show_analog_minor_grid(bool state)
809{
810 (void)state;
811
812 viewport_->update();
813}
814
641574bc 815void View::enable_colored_bg(bool state)
574c568d 816{
641574bc 817 colored_bg_ = state;
574c568d
SA
818 viewport_->update();
819}
820
641574bc 821bool View::colored_bg() const
48995388 822{
641574bc 823 return colored_bg_;
48995388
JH
824}
825
f76af637
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826bool View::cursors_shown() const
827{
8dbbc7f0 828 return show_cursors_;
f76af637
JH
829}
830
831void View::show_cursors(bool show)
832{
a47b5a3f
SA
833 if (show_cursors_ != show) {
834 show_cursors_ = show;
4eba9990 835
a47b5a3f
SA
836 cursor_state_changed(show);
837 ruler_->update();
838 viewport_->update();
839 }
4eba9990 840}
841
a47b5a3f
SA
842void View::set_cursors(pv::util::Timestamp& first, pv::util::Timestamp& second)
843{
844 assert(cursors_);
4eba9990 845
a47b5a3f
SA
846 cursors_->first()->set_time(first);
847 cursors_->second()->set_time(second);
4eba9990 848
a47b5a3f
SA
849 ruler_->update();
850 viewport_->update();
f76af637
JH
851}
852
b4d91e56
JH
853void View::centre_cursors()
854{
a47b5a3f 855 assert(cursors_);
5a206446 856
a47b5a3f
SA
857 const double time_width = scale_ * viewport_->width();
858 cursors_->first()->set_time(offset_ + time_width * 0.4);
859 cursors_->second()->set_time(offset_ + time_width * 0.6);
4eba9990 860
a47b5a3f
SA
861 ruler_->update();
862 viewport_->update();
b4d91e56
JH
863}
864
6f925ba9 865shared_ptr<CursorPair> View::cursors() const
58864c5c 866{
8dbbc7f0 867 return cursors_;
58864c5c
JH
868}
869
710c2a18 870shared_ptr<Flag> View::add_flag(const Timestamp& time)
8914fe79 871{
9f094349
SA
872 shared_ptr<Flag> flag =
873 make_shared<Flag>(*this, time, QString("%1").arg(next_flag_text_));
710c2a18 874 flags_.push_back(flag);
48257a69 875
8914fe79
JH
876 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
877 (next_flag_text_ + 1);
48257a69 878
8914fe79 879 time_item_appearance_changed(true, true);
710c2a18 880 return flag;
8914fe79
JH
881}
882
6f925ba9 883void View::remove_flag(shared_ptr<Flag> flag)
8914fe79
JH
884{
885 flags_.remove(flag);
886 time_item_appearance_changed(true, true);
887}
888
6f925ba9 889vector< shared_ptr<Flag> > View::flags() const
8914fe79 890{
6f925ba9 891 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
8914fe79
JH
892 stable_sort(flags.begin(), flags.end(),
893 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
894 return a->time() < b->time();
895 });
896
897 return flags;
898}
899
cbd80f64
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900const QPoint& View::hover_point() const
901{
8dbbc7f0 902 return hover_point_;
cbd80f64
JH
903}
904
581724de
SA
905const QWidget* View::hover_widget() const
906{
907 return hover_widget_;
908}
909
f6b6c9bf 910int64_t View::get_nearest_level_change(const QPoint &p)
eeceee99 911{
e0544801 912 // Is snapping disabled?
fb641801
SA
913 if (snap_distance_ == 0)
914 return -1;
915
e0544801
SA
916 struct entry_t {
917 entry_t(shared_ptr<Signal> s) :
918 signal(s), delta(numeric_limits<int64_t>::max()), sample(-1), is_dense(false) {}
919 shared_ptr<Signal> signal;
920 int64_t delta;
921 int64_t sample;
922 bool is_dense;
923 };
924
925 vector<entry_t> list;
926
927 // Create list of signals to consider
928 if (signal_under_mouse_cursor_)
929 list.emplace_back(signal_under_mouse_cursor_);
930 else
931 for (shared_ptr<Signal> s : signals_) {
932 if (!s->enabled())
933 continue;
eeceee99 934
e0544801
SA
935 list.emplace_back(s);
936 }
eeceee99 937
e0544801
SA
938 // Get data for listed signals
939 for (entry_t &e : list) {
f6b6c9bf 940 // Calculate sample number from cursor position
e0544801 941 const double samples_per_pixel = e.signal->base()->get_samplerate() * scale();
f6b6c9bf
SA
942 const int64_t x_offset = offset().convert_to<double>() / scale();
943 const int64_t sample_num = max(((x_offset + p.x()) * samples_per_pixel), 0.0);
eeceee99 944
e0544801
SA
945 vector<data::LogicSegment::EdgePair> edges =
946 e.signal->get_nearest_level_changes(sample_num);
f6b6c9bf 947
e0544801
SA
948 if (edges.empty())
949 continue;
f6b6c9bf 950
e0544801
SA
951 // Check first edge
952 const int64_t first_sample_delta = abs(sample_num - edges.front().first);
953 const int64_t first_delta = first_sample_delta / samples_per_pixel;
954 e.delta = first_delta;
955 e.sample = edges.front().first;
f6b6c9bf 956
e0544801
SA
957 // Check second edge if available
958 if (edges.size() == 2) {
959 // Note: -1 because this is usually the right edge and sample points are left-aligned
960 const int64_t second_sample_delta = abs(sample_num - edges.back().first - 1);
961 const int64_t second_delta = second_sample_delta / samples_per_pixel;
f6b6c9bf 962
e0544801
SA
963 // If both edges are too close, we mark this signal as being dense
964 if ((first_delta + second_delta) <= snap_distance_)
965 e.is_dense = true;
eeceee99 966
e0544801
SA
967 if (second_delta < first_delta) {
968 e.delta = second_delta;
969 e.sample = edges.back().first;
970 }
971 }
972 }
eeceee99 973
e0544801
SA
974 // Look for the best match: non-dense first, then dense
975 entry_t *match = nullptr;
eeceee99 976
e0544801
SA
977 for (entry_t &e : list) {
978 if (e.delta > snap_distance_ || e.is_dense)
979 continue;
eeceee99 980
e0544801
SA
981 if (match) {
982 if (e.delta < match->delta)
983 match = &e;
984 } else
985 match = &e;
986 }
f6b6c9bf 987
e0544801
SA
988 if (!match) {
989 for (entry_t &e : list) {
990 if (!e.is_dense)
991 continue;
f6b6c9bf 992
e0544801
SA
993 if (match) {
994 if (e.delta < match->delta)
995 match = &e;
996 } else
997 match = &e;
998 }
999 }
47cf8590 1000
e0544801
SA
1001 if (match) {
1002 // Somewhat ugly hack to make TimeItem::drag_by() work
1003 signal_under_mouse_cursor_ = match->signal;
f6b6c9bf 1004
e0544801 1005 return match->sample;
f6b6c9bf 1006 }
eeceee99 1007
e0544801 1008 return -1;
eeceee99
SA
1009}
1010
af503b10 1011void View::restack_all_trace_tree_items()
7ff0145f 1012{
873cbed0 1013 // Make a list of owners that is sorted from deepest first
cc88566c
JH
1014 const vector<shared_ptr<TraceTreeItem>> items(
1015 list_by_type<TraceTreeItem>());
4800cf9a 1016 set< TraceTreeItemOwner* > owners;
cc88566c 1017 for (const auto &r : items)
4800cf9a 1018 owners.insert(r->owner());
af503b10 1019 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
7ff0145f 1020 sort(sorted_owners.begin(), sorted_owners.end(),
af503b10 1021 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
7ff0145f
JH
1022 return a->depth() > b->depth(); });
1023
1024 // Restack the items recursively
1025 for (auto &o : sorted_owners)
1026 o->restack_items();
1027
1028 // Animate the items to their destination
cef5997e
JH
1029 for (const auto &i : items)
1030 i->animate_to_layout_v_offset();
9cef9567
JH
1031}
1032
cbd9ec7f
SA
1033int View::header_width() const
1034{
1035 return header_->extended_size_hint().width();
1036}
1037
d0c0573b
SA
1038void View::on_setting_changed(const QString &key, const QVariant &value)
1039{
1040 if (key == GlobalSettings::Key_View_TriggerIsZeroTime)
1041 on_settingViewTriggerIsZeroTime_changed(value);
fb641801
SA
1042
1043 if (key == GlobalSettings::Key_View_SnapDistance) {
1044 GlobalSettings settings;
1045 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
1046 }
d0c0573b
SA
1047}
1048
7ea2a4ff 1049void View::trigger_event(int segment_id, util::Timestamp location)
48257a69 1050{
7ea2a4ff
SA
1051 // TODO This doesn't work if we're showing multiple segments at once
1052 if ((uint32_t)segment_id != current_segment_)
1053 return;
1054
451dc5f3
SA
1055 // Set zero location if the Key_View_TriggerIsZeroTime setting is set and
1056 // if this is the first trigger for this segment.
ffc00fdd
C
1057 GlobalSettings settings;
1058 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
1059
451dc5f3
SA
1060 size_t trigger_count = session_.get_triggers(current_segment_).size();
1061
1062 if (trigger_is_zero_time && trigger_count == 1)
1063 set_zero_position(location);
ffc00fdd 1064
067bb624 1065 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
48257a69
SA
1066}
1067
60d9b99a 1068void View::get_scroll_layout(double &length, Timestamp &offset) const
f25770e2 1069{
60d9b99a
JS
1070 const pair<Timestamp, Timestamp> extents = get_time_extents();
1071 length = ((extents.second - extents.first) / scale_).convert_to<double>();
8dbbc7f0 1072 offset = offset_ / scale_;
f25770e2
JH
1073}
1074
d1e7d82c
JH
1075void View::set_zoom(double scale, int offset)
1076{
ce11b2ea
SA
1077 // Reset the "always zoom to fit" feature as the user changed the zoom
1078 always_zoom_to_fit_ = false;
1079 always_zoom_to_fit_changed(false);
1080
60d9b99a
JS
1081 const Timestamp cursor_offset = offset_ + scale_ * offset;
1082 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
1083 const Timestamp new_offset = cursor_offset - new_scale * offset;
1084 set_scale_offset(new_scale.convert_to<double>(), new_offset);
d1e7d82c
JH
1085}
1086
361c560e
JH
1087void View::calculate_tick_spacing()
1088{
8a1bc087 1089 const double SpacingIncrement = 10.0f;
8a463dbc 1090 const double MinValueSpacing = 40.0f;
361c560e 1091
1e124d4b
SA
1092 // Figure out the highest numeric value visible on a label
1093 const QSize areaSize = viewport_->size();
60d9b99a 1094 const Timestamp max_time = max(fabs(offset_),
1e124d4b
SA
1095 fabs(offset_ + scale_ * areaSize.width()));
1096
d40f4db7
SA
1097 double min_width = SpacingIncrement;
1098 double label_width, tick_period_width;
361c560e
JH
1099
1100 QFontMetrics m(QApplication::font());
1101
adb3831e
JS
1102 // Copies of the member variables with the same name, used in the calculation
1103 // and written back afterwards, so that we don't emit signals all the time
1104 // during the calculation.
1105 pv::util::Timestamp tick_period = tick_period_;
1106 pv::util::SIPrefix tick_prefix = tick_prefix_;
1107 unsigned tick_precision = tick_precision_;
1108
361c560e
JH
1109 do {
1110 const double min_period = scale_ * min_width;
1111
1112 const int order = (int)floorf(log10f(min_period));
c677193d
JS
1113 const pv::util::Timestamp order_decimal =
1114 pow(pv::util::Timestamp(10), order);
361c560e 1115
8a1bc087
SA
1116 // Allow for a margin of error so that a scale unit of 1 can be used.
1117 // Otherwise, for a SU of 1 the tick period will almost always be below
1118 // the min_period by a small amount - and thus skipped in favor of 2.
1119 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
1120 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
1121 double tp_with_margin;
361c560e
JH
1122 unsigned int unit = 0;
1123
1124 do {
c677193d
JS
1125 tp_with_margin = order_decimal.convert_to<double>() *
1126 (ScaleUnits[unit++] + tp_margin);
8a1bc087 1127 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
361c560e 1128
e4cc0ee6 1129 minor_tick_count_ = (unit == 2) ? 4 : 5;
adb3831e
JS
1130 tick_period = order_decimal * ScaleUnits[unit - 1];
1131 tick_prefix = static_cast<pv::util::SIPrefix>(
1132 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
361c560e 1133
d40f4db7
SA
1134 // Precision is the number of fractional digits required, not
1135 // taking the prefix into account (and it must never be negative)
6f925ba9 1136 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
d40f4db7 1137
adb3831e 1138 tick_period_width = (tick_period / scale_).convert_to<double>();
d40f4db7 1139
3ccf0f7f
JS
1140 const QString label_text = Ruler::format_time_with_distance(
1141 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
d40f4db7
SA
1142
1143 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
1144 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
361c560e
JH
1145 MinValueSpacing;
1146
1147 min_width += SpacingIncrement;
d40f4db7 1148 } while (tick_period_width < label_width);
adb3831e
JS
1149
1150 set_tick_period(tick_period);
1151 set_tick_prefix(tick_prefix);
1152 set_tick_precision(tick_precision);
361c560e
JH
1153}
1154
8a5fd81f
SA
1155void View::adjust_top_margin()
1156{
1157 assert(viewport_);
1158
1159 const QSize areaSize = viewport_->size();
1160
1161 const pair<int, int> extents = v_extents();
1162 const int top_margin = owner_visual_v_offset() + extents.first;
1163 const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second;
1164
1165 // Do we have empty space at the top while the last trace goes out of screen?
1166 if ((top_margin > 0) && (trace_bottom > areaSize.height())) {
1167 const int trace_height = extents.second - extents.first;
1168
1169 // Center everything vertically if there is enough space
1170 if (areaSize.height() >= trace_height)
1171 set_v_offset(extents.first -
1172 ((areaSize.height() - trace_height) / 2));
1173 else
1174 // Remove the top margin to make as many traces fit on screen as possible
1175 set_v_offset(extents.first);
1176 }
1177}
1178
cdf7bea7 1179void View::update_scroll()
adb4b10c 1180{
8dbbc7f0 1181 assert(viewport_);
33094993
SA
1182 QScrollBar *hscrollbar = scrollarea_->horizontalScrollBar();
1183 QScrollBar *vscrollbar = scrollarea_->verticalScrollBar();
adb4b10c 1184
8dbbc7f0 1185 const QSize areaSize = viewport_->size();
adb4b10c
JH
1186
1187 // Set the horizontal scroll bar
60d9b99a
JS
1188 double length = 0;
1189 Timestamp offset;
f25770e2
JH
1190 get_scroll_layout(length, offset);
1191 length = max(length - areaSize.width(), 0.0);
adb4b10c 1192
c677193d 1193 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
d7aae647 1194
f4e57597
SA
1195 hscrollbar->setPageStep(areaSize.width() / 2);
1196 hscrollbar->setSingleStep(major_tick_distance);
f25770e2 1197
8dbbc7f0 1198 updating_scroll_ = true;
528bd8a1 1199
333d5bbc 1200 if (length < MaxScrollValue) {
f4e57597
SA
1201 hscrollbar->setRange(0, length);
1202 hscrollbar->setSliderPosition(offset.convert_to<double>());
f25770e2 1203 } else {
f4e57597
SA
1204 hscrollbar->setRange(0, MaxScrollValue);
1205 hscrollbar->setSliderPosition(
60d9b99a 1206 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
f25770e2 1207 }
adb4b10c 1208
8dbbc7f0 1209 updating_scroll_ = false;
528bd8a1 1210
adb4b10c 1211 // Set the vertical scrollbar
f4e57597
SA
1212 vscrollbar->setPageStep(areaSize.height());
1213 vscrollbar->setSingleStep(areaSize.height() / 8);
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JH
1214
1215 const pair<int, int> extents = v_extents();
925763b0
SA
1216
1217 // Don't change the scrollbar range if there are no traces
1218 if (extents.first != extents.second)
f4e57597 1219 vscrollbar->setRange(extents.first - areaSize.height(),
925763b0
SA
1220 extents.second);
1221
2099158e 1222 if (scroll_needs_defaults_) {
925763b0 1223 set_scroll_default();
2099158e
SA
1224 scroll_needs_defaults_ = false;
1225 }
925763b0
SA
1226}
1227
1228void View::reset_scroll()
1229{
33094993 1230 scrollarea_->verticalScrollBar()->setRange(0, 0);
925763b0
SA
1231}
1232
1233void View::set_scroll_default()
1234{
1235 assert(viewport_);
1236
1237 const QSize areaSize = viewport_->size();
1238
925763b0
SA
1239 const pair<int, int> extents = v_extents();
1240 const int trace_height = extents.second - extents.first;
1241
1242 // Do all traces fit in the view?
1243 if (areaSize.height() >= trace_height)
1244 // Center all traces vertically
1245 set_v_offset(extents.first -
1246 ((areaSize.height() - trace_height) / 2));
1247 else
1248 // Put the first trace at the top, letting the bottom ones overflow
1249 set_v_offset(extents.first);
adb4b10c
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1250}
1251
9510aea0 1252void View::determine_if_header_was_shrunk()
33094993 1253{
b571a8e7
SA
1254 const int header_pane_width =
1255 splitter_->sizes().front(); // clazy:exclude=detaching-temporary
33094993 1256
e0be5f21
SA
1257 // Allow for a slight margin of error so that we also accept
1258 // slight differences when e.g. a label name change increased
1259 // the overall width
cbd9ec7f 1260 header_was_shrunk_ = (header_pane_width < (header_width() - 10));
33094993
SA
1261}
1262
60c426a0 1263void View::resize_header_to_fit()
d7c0ca4a 1264{
572c3bb7
SA
1265 // Setting the maximum width of the header widget doesn't work as
1266 // expected because the splitter would allow the user to make the
1267 // pane wider than that, creating empty space as a result.
1268 // To make this work, we stricly enforce the maximum width by
1269 // expanding the header unless the user shrunk it on purpose.
1270 // As we're then setting the width of the header pane, we set the
1271 // splitter to the maximum allowed position.
1272
76750c41 1273 int splitter_area_width = 0;
b571a8e7 1274 for (int w : splitter_->sizes()) // clazy:exclude=range-loop
76750c41 1275 splitter_area_width += w;
33094993 1276
76750c41
SA
1277 // Make sure the header has enough horizontal space to show all labels fully
1278 QList<int> pane_sizes;
1279 pane_sizes.push_back(header_->extended_size_hint().width());
1280 pane_sizes.push_back(splitter_area_width - header_->extended_size_hint().width());
1281 splitter_->setSizes(pane_sizes);
1282}
1283
1284void View::update_layout()
1285{
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JH
1286 update_scroll();
1287}
1288
af503b10 1289TraceTreeItemOwner* View::find_prevalent_trace_group(
cf124e47 1290 const shared_ptr<sigrok::ChannelGroup> &group,
bf0edd2b 1291 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
cf124e47 1292 &signal_map)
448a72cf 1293{
cf124e47 1294 assert(group);
448a72cf 1295
af503b10
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1296 unordered_set<TraceTreeItemOwner*> owners;
1297 vector<TraceTreeItemOwner*> owner_list;
448a72cf 1298
cf124e47 1299 // Make a set and a list of all the owners
f4ab4b5c
SA
1300 for (const auto& channel : group->channels()) {
1301 for (auto& entry : signal_map) {
bf0edd2b
SA
1302 if (entry.first->channel() == channel) {
1303 TraceTreeItemOwner *const o = (entry.second)->owner();
1304 owner_list.push_back(o);
1305 owners.insert(o);
1306 }
1307 }
cf124e47 1308 }
448a72cf 1309
cf124e47
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1310 // Iterate through the list of owners, and find the most prevalent
1311 size_t max_prevalence = 0;
af503b10
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1312 TraceTreeItemOwner *prevalent_owner = nullptr;
1313 for (TraceTreeItemOwner *owner : owners) {
6f925ba9 1314 const size_t prevalence = count_if(
cf124e47 1315 owner_list.begin(), owner_list.end(),
af503b10 1316 [&](TraceTreeItemOwner *o) { return o == owner; });
cf124e47
JH
1317 if (prevalence > max_prevalence) {
1318 max_prevalence = prevalence;
1319 prevalent_owner = owner;
1320 }
448a72cf
JH
1321 }
1322
cf124e47 1323 return prevalent_owner;
448a72cf
JH
1324}
1325
cf124e47
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1326vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
1327 const vector< shared_ptr<sigrok::Channel> > &channels,
bf0edd2b 1328 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
cf124e47
JH
1329 &signal_map,
1330 set< shared_ptr<Trace> > &add_list)
1331{
1332 vector< shared_ptr<Trace> > filtered_traces;
1333
f4ab4b5c
SA
1334 for (const auto& channel : channels) {
1335 for (auto& entry : signal_map) {
bf0edd2b
SA
1336 if (entry.first->channel() == channel) {
1337 shared_ptr<Trace> trace = entry.second;
1338 const auto list_iter = add_list.find(trace);
1339 if (list_iter == add_list.end())
1340 continue;
1341
1342 filtered_traces.push_back(trace);
1343 add_list.erase(list_iter);
1344 }
1345 }
cf124e47
JH
1346 }
1347
1348 return filtered_traces;
448a72cf
JH
1349}
1350
ef454ad5
SA
1351void View::determine_time_unit()
1352{
7ee199a7 1353 // Check whether we know the sample rate and hence can use time as the unit
d001f416 1354 if (time_unit_ == util::TimeUnit::Samples) {
7ee199a7 1355 // Check all signals but...
f4ab4b5c 1356 for (const shared_ptr<Signal>& signal : signals_) {
7ee199a7
SA
1357 const shared_ptr<SignalData> data = signal->data();
1358
1359 // ...only check first segment of each
1360 const vector< shared_ptr<Segment> > segments = data->segments();
1361 if (!segments.empty())
1362 if (segments[0]->samplerate()) {
4b0af0b6 1363 set_time_unit(util::TimeUnit::Time);
7ee199a7
SA
1364 break;
1365 }
1366 }
ef454ad5
SA
1367 }
1368}
1369
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JH
1370bool View::eventFilter(QObject *object, QEvent *event)
1371{
1372 const QEvent::Type type = event->type();
333d5bbc 1373 if (type == QEvent::MouseMove) {
cbd80f64 1374
581724de
SA
1375 if (object)
1376 hover_widget_ = qobject_cast<QWidget*>(object);
1377
cbd80f64 1378 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
8dbbc7f0
JH
1379 if (object == viewport_)
1380 hover_point_ = mouse_event->pos();
819e2e95 1381 else if (object == ruler_)
581724de 1382 hover_point_ = mouse_event->pos();
8dbbc7f0
JH
1383 else if (object == header_)
1384 hover_point_ = QPoint(0, mouse_event->y());
cbd80f64 1385 else
8dbbc7f0 1386 hover_point_ = QPoint(-1, -1);
cbd80f64 1387
873e8035 1388 update_hover_point();
cbd80f64 1389
333d5bbc 1390 } else if (type == QEvent::Leave) {
8dbbc7f0 1391 hover_point_ = QPoint(-1, -1);
873e8035 1392 update_hover_point();
5f9b7de5
SA
1393 } else if (type == QEvent::Show) {
1394
1395 // This is somewhat of a hack, unfortunately. We cannot use
1396 // set_v_offset() from within restore_settings() as the view
1397 // at that point is neither visible nor properly sized.
1398 // This is the least intrusive workaround I could come up
1399 // with: set the vertical offset (or scroll defaults) when
1400 // the view is shown, which happens after all widgets were
1401 // resized to their final sizes.
1402 update_layout();
1403
60c426a0
SA
1404 if (settings_restored_)
1405 determine_if_header_was_shrunk();
1406 else
1407 resize_header_to_fit();
b760e6e0 1408
5f9b7de5
SA
1409 if (scroll_needs_defaults_) {
1410 set_scroll_default();
1411 scroll_needs_defaults_ = false;
1412 }
1413
1414 if (saved_v_offset_) {
1415 set_v_offset(saved_v_offset_);
1416 saved_v_offset_ = 0;
1417 }
cbd80f64
JH
1418 }
1419
1420 return QObject::eventFilter(object, event);
1421}
1422
d9b55cc8
SA
1423void View::contextMenuEvent(QContextMenuEvent *event)
1424{
be843692
SA
1425 QPoint pos = event->pos() - QPoint(0, ruler_->sizeHint().height());
1426
1427 const shared_ptr<ViewItem> r = viewport_->get_mouse_over_item(pos);
d9b55cc8
SA
1428 if (!r)
1429 return;
1430
be843692 1431 QMenu *menu = r->create_view_context_menu(this, pos);
d9b55cc8 1432 if (menu)
8835b5e7 1433 menu->popup(event->globalPos());
d9b55cc8
SA
1434}
1435
8a5fd81f 1436void View::resizeEvent(QResizeEvent* event)
adb4b10c 1437{
8a5fd81f
SA
1438 // Only adjust the top margin if we shrunk vertically
1439 if (event->size().height() < event->oldSize().height())
1440 adjust_top_margin();
1441
d7c0ca4a 1442 update_layout();
adb4b10c
JH
1443}
1444
873e8035
SA
1445void View::update_hover_point()
1446{
eeceee99
SA
1447 // Determine signal that the mouse cursor is hovering over
1448 signal_under_mouse_cursor_.reset();
581724de 1449 if (hover_widget_ == this) {
f4ab4b5c 1450 for (const shared_ptr<Signal>& s : signals_) {
581724de
SA
1451 const pair<int, int> extents = s->v_extents();
1452 const int top = s->get_visual_y() + extents.first;
1453 const int btm = s->get_visual_y() + extents.second;
1454 if ((hover_point_.y() >= top) && (hover_point_.y() <= btm)
1455 && s->base()->enabled())
1456 signal_under_mouse_cursor_ = s;
1457 }
eeceee99
SA
1458 }
1459
1460 // Update all trace tree items
873e8035
SA
1461 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1462 list_by_type<TraceTreeItem>());
f4ab4b5c 1463 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
873e8035
SA
1464 r->hover_point_changed(hover_point_);
1465
eeceee99 1466 // Notify any other listeners
581724de 1467 hover_point_changed(hover_widget_, hover_point_);
873e8035
SA
1468}
1469
6e2c3c85 1470void View::row_item_appearance_changed(bool label, bool content)
32218d3e
JH
1471{
1472 if (label)
8dbbc7f0 1473 header_->update();
32218d3e 1474 if (content)
8dbbc7f0 1475 viewport_->update();
32218d3e
JH
1476}
1477
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1478void View::time_item_appearance_changed(bool label, bool content)
1479{
e0be5f21 1480 if (label) {
819e2e95 1481 ruler_->update();
e0be5f21
SA
1482
1483 // Make sure the header pane width is updated, too
1484 update_layout();
1485 }
1486
98cfe4e8
JH
1487 if (content)
1488 viewport_->update();
1489}
1490
32218d3e
JH
1491void View::extents_changed(bool horz, bool vert)
1492{
8dbbc7f0 1493 sticky_events_ |=
af503b10
JH
1494 (horz ? TraceTreeItemHExtentsChanged : 0) |
1495 (vert ? TraceTreeItemVExtentsChanged : 0);
5ed05b69 1496
68e0a53e 1497 lazy_event_handler_.stop();
8dbbc7f0 1498 lazy_event_handler_.start();
32218d3e
JH
1499}
1500
00c518d6
SA
1501void View::on_signal_name_changed()
1502{
9510aea0 1503 if (!header_was_shrunk_)
60c426a0 1504 resize_header_to_fit();
00c518d6
SA
1505}
1506
e0be5f21
SA
1507void View::on_splitter_moved()
1508{
9510aea0
SA
1509 // The header can only shrink when the splitter is moved manually
1510 determine_if_header_was_shrunk();
1511
1512 if (!header_was_shrunk_)
60c426a0 1513 resize_header_to_fit();
e0be5f21
SA
1514}
1515
476ca5f4
SA
1516void View::on_zoom_in_shortcut_triggered()
1517{
1518 zoom(1);
1519}
1520
1521void View::on_zoom_out_shortcut_triggered()
1522{
1523 zoom(-1);
1524}
1525
1526void View::on_scroll_to_start_shortcut_triggered()
1527{
1528 set_h_offset(0);
1529}
1530
1531void View::on_scroll_to_end_shortcut_triggered()
1532{
1533 set_h_offset(get_h_scrollbar_maximum());
1534}
1535
b16907d3 1536void View::h_scroll_value_changed(int value)
adb4b10c 1537{
8dbbc7f0 1538 if (updating_scroll_)
528bd8a1
JH
1539 return;
1540
c7b03d9d
SA
1541 // Disable sticky scrolling when user moves the horizontal scroll bar
1542 // during a running acquisition
1543 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1544 sticky_scrolling_ = false;
1545 sticky_scrolling_changed(false);
1546 }
1547
33094993 1548 const int range = scrollarea_->horizontalScrollBar()->maximum();
333d5bbc 1549 if (range < MaxScrollValue)
4b0af0b6 1550 set_offset(scale_ * value);
f25770e2 1551 else {
60d9b99a
JS
1552 double length = 0;
1553 Timestamp offset;
f25770e2 1554 get_scroll_layout(length, offset);
4b0af0b6 1555 set_offset(scale_ * length * value / MaxScrollValue);
f25770e2
JH
1556 }
1557
8dbbc7f0 1558 ruler_->update();
8dbbc7f0 1559 viewport_->update();
adb4b10c
JH
1560}
1561
f8400017 1562void View::v_scroll_value_changed()
adb4b10c 1563{
8dbbc7f0
JH
1564 header_->update();
1565 viewport_->update();
adb4b10c
JH
1566}
1567
69dd2b03
JH
1568void View::signals_changed()
1569{
769a79b5
JH
1570 using sigrok::Channel;
1571
925763b0
SA
1572 vector< shared_ptr<Channel> > channels;
1573 shared_ptr<sigrok::Device> sr_dev;
60c426a0 1574 bool signals_added_or_removed = false;
68b21a71 1575
925763b0
SA
1576 // Do we need to set the vertical scrollbar to its default position later?
1577 // We do if there are no traces, i.e. the scroll bar has no range set
1578 bool reset_scrollbar =
33094993
SA
1579 (scrollarea_->verticalScrollBar()->minimum() ==
1580 scrollarea_->verticalScrollBar()->maximum());
925763b0
SA
1581
1582 if (!session_.device()) {
1583 reset_scroll();
47e9e7bb 1584 signals_.clear();
925763b0 1585 } else {
925763b0 1586 sr_dev = session_.device()->device();
3b353d67 1587 assert(sr_dev);
925763b0
SA
1588 channels = sr_dev->channels();
1589 }
e37e05f7 1590
925763b0 1591 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
769a79b5 1592
cf124e47
JH
1593 // Make a list of traces that are being added, and a list of traces
1594 // that are being removed
364d2155
JH
1595 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1596 const set<shared_ptr<Trace>> prev_traces(
1597 prev_trace_list.begin(), prev_trace_list.end());
448a72cf 1598
47e9e7bb 1599 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
cf124e47
JH
1600
1601#ifdef ENABLE_DECODE
bb7dd726 1602 traces.insert(decode_traces_.begin(), decode_traces_.end());
cf124e47
JH
1603#endif
1604
1605 set< shared_ptr<Trace> > add_traces;
1606 set_difference(traces.begin(), traces.end(),
1607 prev_traces.begin(), prev_traces.end(),
1608 inserter(add_traces, add_traces.begin()));
1609
1610 set< shared_ptr<Trace> > remove_traces;
1611 set_difference(prev_traces.begin(), prev_traces.end(),
1612 traces.begin(), traces.end(),
1613 inserter(remove_traces, remove_traces.begin()));
1614
1615 // Make a look-up table of sigrok Channels to pulseview Signals
bf0edd2b 1616 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
cf124e47 1617 signal_map;
f4ab4b5c 1618 for (const shared_ptr<Signal>& sig : signals_)
73a25a6e 1619 signal_map[sig->base()] = sig;
448a72cf
JH
1620
1621 // Populate channel groups
925763b0 1622 if (sr_dev)
f4ab4b5c 1623 for (auto& entry : sr_dev->channel_groups()) {
925763b0
SA
1624 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1625
1626 if (group->channels().size() <= 1)
1627 continue;
1628
1629 // Find best trace group to add to
1630 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1631 group, signal_map);
1632
1633 // If there is no trace group, create one
1634 shared_ptr<TraceGroup> new_trace_group;
1635 if (!owner) {
1636 new_trace_group.reset(new TraceGroup());
1637 owner = new_trace_group.get();
1638 }
1639
1640 // Extract traces for the trace group, removing them from
1641 // the add list
1642 const vector< shared_ptr<Trace> > new_traces_in_group =
1643 extract_new_traces_for_channels(group->channels(),
1644 signal_map, add_traces);
1645
1646 // Add the traces to the group
1647 const pair<int, int> prev_v_extents = owner->v_extents();
1648 int offset = prev_v_extents.second - prev_v_extents.first;
f4ab4b5c 1649 for (const shared_ptr<Trace>& trace : new_traces_in_group) {
925763b0
SA
1650 assert(trace);
1651 owner->add_child_item(trace);
1652
1653 const pair<int, int> extents = trace->v_extents();
1654 if (trace->enabled())
1655 offset += -extents.first;
1656 trace->force_to_v_offset(offset);
1657 if (trace->enabled())
1658 offset += extents.second;
1659 }
1660
7d556523
SA
1661 if (new_trace_group) {
1662 // Assign proper vertical offsets to each channel in the group
1663 new_trace_group->restack_items();
1664
1665 // If this is a new group, enqueue it in the new top level
1666 // items list
1667 if (!new_traces_in_group.empty())
1668 new_top_level_items.push_back(new_trace_group);
1669 }
cf124e47 1670 }
68b21a71 1671
769a79b5
JH
1672 // Enqueue the remaining logic channels in a group
1673 vector< shared_ptr<Channel> > logic_channels;
1674 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1675 [](const shared_ptr<Channel>& c) {
1676 return c->type() == sigrok::ChannelType::LOGIC; });
d6128866 1677
769a79b5 1678 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
d6128866
SA
1679 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1680
1681 if (non_grouped_logic_signals.size() > 0) {
1682 const shared_ptr<TraceGroup> non_grouped_trace_group(
1683 make_shared<TraceGroup>());
f4ab4b5c 1684 for (const shared_ptr<Trace>& trace : non_grouped_logic_signals)
d6128866
SA
1685 non_grouped_trace_group->add_child_item(trace);
1686
1687 non_grouped_trace_group->restack_items();
1688 new_top_level_items.push_back(non_grouped_trace_group);
1689 }
769a79b5 1690
cf124e47
JH
1691 // Enqueue the remaining channels as free ungrouped traces
1692 const vector< shared_ptr<Trace> > new_top_level_signals =
d6128866 1693 extract_new_traces_for_channels(channels, signal_map, add_traces);
cf124e47
JH
1694 new_top_level_items.insert(new_top_level_items.end(),
1695 new_top_level_signals.begin(), new_top_level_signals.end());
1696
1697 // Enqueue any remaining traces i.e. decode traces
1698 new_top_level_items.insert(new_top_level_items.end(),
1699 add_traces.begin(), add_traces.end());
1700
1701 // Remove any removed traces
f4ab4b5c 1702 for (const shared_ptr<Trace>& trace : remove_traces) {
af503b10 1703 TraceTreeItemOwner *const owner = trace->owner();
cf124e47
JH
1704 assert(owner);
1705 owner->remove_child_item(trace);
60c426a0 1706 signals_added_or_removed = true;
cf124e47 1707 }
448a72cf 1708
bc72e51f
SA
1709 // Remove any empty trace groups
1710 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
e28c998e 1711 if (group->child_items().size() == 0) {
bc72e51f 1712 remove_child_item(group);
e28c998e
SA
1713 group.reset();
1714 }
bc72e51f 1715
cf124e47 1716 // Add and position the pending top levels items
6644424f 1717 int offset = v_extents().second;
cf124e47 1718 for (auto item : new_top_level_items) {
8c09273b
SA
1719 add_child_item(item);
1720
d6128866 1721 // Position the item after the last item or at the top if there is none
8c09273b
SA
1722 const pair<int, int> extents = item->v_extents();
1723
1724 if (item->enabled())
1725 offset += -extents.first;
d6128866 1726
d6128866 1727 item->force_to_v_offset(offset);
cf124e47 1728
cf124e47 1729 if (item->enabled())
8c09273b 1730 offset += extents.second;
60c426a0 1731 signals_added_or_removed = true;
ef8311a4
JH
1732 }
1733
76750c41 1734
60c426a0
SA
1735 if (signals_added_or_removed && !header_was_shrunk_)
1736 resize_header_to_fit();
76750c41 1737
a6c1726e 1738 update_layout();
cf124e47
JH
1739
1740 header_->update();
1741 viewport_->update();
925763b0
SA
1742
1743 if (reset_scrollbar)
1744 set_scroll_default();
69dd2b03
JH
1745}
1746
7ee199a7 1747void View::capture_state_updated(int state)
adb4b10c 1748{
28ceff25
SA
1749 GlobalSettings settings;
1750
92ff2b60 1751 if (state == Session::Running) {
4b0af0b6 1752 set_time_unit(util::TimeUnit::Samples);
fd03a279 1753
92ff2b60 1754 trigger_markers_.clear();
fe68068b 1755 set_zero_position(0);
90472a51 1756
28ceff25
SA
1757 scale_at_acq_start_ = scale_;
1758 offset_at_acq_start_ = offset_;
1759
820ce18a
SA
1760 // Activate "always zoom to fit" if the setting is enabled and we're
1761 // the main view of this session (other trace views may be used for
1762 // zooming and we don't want to mess them up)
e91fb166 1763 bool state = settings.value(GlobalSettings::Key_View_ZoomToFitDuringAcq).toBool();
820ce18a 1764 if (is_main_view_ && state) {
90472a51
SA
1765 always_zoom_to_fit_ = true;
1766 always_zoom_to_fit_changed(always_zoom_to_fit_);
1767 }
9b64f2df
SA
1768
1769 // Enable sticky scrolling if the setting is enabled
1770 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
558ad6ce
SA
1771
1772 // Reset all traces to segment 0
1773 current_segment_ = 0;
1774 set_current_segment(current_segment_);
92ff2b60
TS
1775 }
1776
fd03a279
SA
1777 if (state == Session::Stopped) {
1778 // After acquisition has stopped we need to re-calculate the ticks once
1779 // as it's otherwise done when the user pans or zooms, which is too late
1780 calculate_tick_spacing();
1781
1782 // Reset "always zoom to fit", the acquisition has stopped
1783 if (always_zoom_to_fit_) {
3906e758
SA
1784 // Perform a final zoom-to-fit before disabling
1785 zoom_fit(always_zoom_to_fit_);
fd03a279 1786 always_zoom_to_fit_ = false;
90472a51 1787 always_zoom_to_fit_changed(always_zoom_to_fit_);
fd03a279 1788 }
28ceff25
SA
1789
1790 bool zoom_to_fit_after_acq =
1791 settings.value(GlobalSettings::Key_View_ZoomToFitAfterAcq).toBool();
1792
1793 // Only perform zoom-to-fit if the user hasn't altered the viewport and
1794 // we didn't restore settings in the meanwhile
1795 if (zoom_to_fit_after_acq &&
1796 !suppress_zoom_to_fit_after_acq_ &&
1797 (scale_ == scale_at_acq_start_) &&
1798 (offset_ == offset_at_acq_start_))
1799 zoom_fit(false); // We're stopped, so the GUI state doesn't matter
1800
1801 suppress_zoom_to_fit_after_acq_ = false;
fd03a279 1802 }
7ee199a7
SA
1803}
1804
4e86ec70
SA
1805void View::on_new_segment(int new_segment_id)
1806{
1807 on_segment_changed(new_segment_id);
1808}
1809
558ad6ce
SA
1810void View::on_segment_completed(int segment_id)
1811{
1812 on_segment_changed(segment_id);
558ad6ce
SA
1813}
1814
526c8c00
SA
1815void View::on_segment_changed(int segment)
1816{
7daebd05
SA
1817 switch (segment_display_mode_) {
1818 case Trace::ShowLastSegmentOnly:
1819 case Trace::ShowSingleSegmentOnly:
558ad6ce
SA
1820 set_current_segment(segment);
1821 break;
1822
1823 case Trace::ShowLastCompleteSegmentOnly:
89914a86
SA
1824 // Only update if all segments are complete
1825 if (session_.all_segments_complete(segment))
1826 set_current_segment(segment);
7daebd05 1827 break;
526c8c00 1828
7daebd05
SA
1829 case Trace::ShowAllSegments:
1830 case Trace::ShowAccumulatedIntensity:
1831 default:
1832 break;
1833 }
526c8c00
SA
1834}
1835
451dc5f3
SA
1836void View::on_settingViewTriggerIsZeroTime_changed(const QVariant new_value)
1837{
1838 if (new_value.toBool()) {
1839 // The first trigger for this segment is used as the zero position
1840 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
1841 if (triggers.size() > 0)
1842 set_zero_position(triggers.front());
1843 } else
1844 reset_zero_position();
1845}
1846
c7b03d9d
SA
1847void View::perform_delayed_view_update()
1848{
3906e758 1849 if (always_zoom_to_fit_) {
ce11b2ea 1850 zoom_fit(true);
3906e758 1851 } else if (sticky_scrolling_) {
c7b03d9d 1852 // Make right side of the view sticky
60d9b99a
JS
1853 double length = 0;
1854 Timestamp offset;
c7b03d9d
SA
1855 get_scroll_layout(length, offset);
1856
1857 const QSize areaSize = viewport_->size();
1858 length = max(length - areaSize.width(), 0.0);
1859
4b0af0b6 1860 set_offset(scale_ * length);
c7b03d9d 1861 }
adb4b10c 1862
ef454ad5 1863 determine_time_unit();
c7b03d9d
SA
1864 update_scroll();
1865 ruler_->update();
8dbbc7f0 1866 viewport_->update();
adb4b10c 1867}
cdf7bea7 1868
32218d3e 1869void View::process_sticky_events()
d7c0ca4a 1870{
af503b10 1871 if (sticky_events_ & TraceTreeItemHExtentsChanged)
32218d3e 1872 update_layout();
af503b10
JH
1873 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
1874 restack_all_trace_tree_items();
f15bb3bc
JH
1875 update_scroll();
1876 }
32218d3e
JH
1877
1878 // Clear the sticky events
8dbbc7f0 1879 sticky_events_ = 0;
d7c0ca4a
JH
1880}
1881
1573bf16 1882} // namespace trace
f4e57597 1883} // namespace views
cdf7bea7 1884} // namespace pv