2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
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.
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.
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/>.
21 #include <libsigrokdecode/libsigrokdecode.h>
32 #include <unordered_set>
34 #include <boost/archive/text_iarchive.hpp>
35 #include <boost/archive/text_oarchive.hpp>
36 #include <boost/serialization/serialization.hpp>
38 #include <QApplication>
40 #include <QFontMetrics>
42 #include <QMouseEvent>
44 #include <QVBoxLayout>
46 #include <libsigrokcxx/libsigrokcxx.hpp>
48 #include "analogsignal.hpp"
50 #include "logicsignal.hpp"
53 #include "tracegroup.hpp"
54 #include "triggermarker.hpp"
56 #include "viewport.hpp"
58 #include "pv/data/logic.hpp"
59 #include "pv/data/logicsegment.hpp"
60 #include "pv/devices/device.hpp"
61 #include "pv/globalsettings.hpp"
62 #include "pv/session.hpp"
63 #include "pv/util.hpp"
66 #include "decodetrace.hpp"
69 using pv::data::SignalData;
70 using pv::data::Segment;
71 using pv::util::TimeUnit;
72 using pv::util::Timestamp;
74 using std::back_inserter;
80 using std::make_shared;
82 using std::numeric_limits;
85 using std::set_difference;
86 using std::shared_ptr;
87 using std::stringstream;
88 using std::unordered_map;
89 using std::unordered_set;
96 const Timestamp View::MaxScale("1e9");
97 const Timestamp View::MinScale("1e-12");
99 const int View::MaxScrollValue = INT_MAX / 2;
101 const int View::ScaleUnits[3] = {1, 2, 5};
104 CustomScrollArea::CustomScrollArea(QWidget *parent) :
105 QAbstractScrollArea(parent)
109 bool CustomScrollArea::viewportEvent(QEvent *event)
111 switch (event->type()) {
113 case QEvent::MouseButtonPress:
114 case QEvent::MouseButtonRelease:
115 case QEvent::MouseButtonDblClick:
116 case QEvent::MouseMove:
118 case QEvent::TouchBegin:
119 case QEvent::TouchUpdate:
120 case QEvent::TouchEnd:
123 return QAbstractScrollArea::viewportEvent(event);
127 View::View(Session &session, bool is_main_view, QWidget *parent) :
128 ViewBase(session, is_main_view, parent),
130 // Note: Place defaults in View::reset_view_state(), not here
131 splitter_(new QSplitter()),
132 header_was_shrunk_(false), // The splitter remains unchanged after a reset, so this goes here
133 sticky_scrolling_(false) // Default setting is set in MainWindow::setup_ui()
135 QVBoxLayout *root_layout = new QVBoxLayout(this);
136 root_layout->setContentsMargins(0, 0, 0, 0);
137 root_layout->addWidget(splitter_);
139 viewport_ = new Viewport(*this);
140 scrollarea_ = new CustomScrollArea(splitter_);
141 scrollarea_->setViewport(viewport_);
142 scrollarea_->setFrameShape(QFrame::NoFrame);
144 ruler_ = new Ruler(*this);
146 header_ = new Header(*this);
147 header_->setMinimumWidth(10); // So that the arrow tips show at least
149 // We put the header into a simple layout so that we can add the top margin,
150 // allowing us to make it line up with the bottom of the ruler
151 QWidget *header_container = new QWidget();
152 header_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
153 QVBoxLayout *header_layout = new QVBoxLayout(header_container);
154 header_layout->setContentsMargins(0, ruler_->sizeHint().height(), 0, 0);
155 header_layout->addWidget(header_);
157 // To let the ruler and scrollarea be on the same split pane, we need a layout
158 QWidget *trace_container = new QWidget();
159 trace_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
160 QVBoxLayout *trace_layout = new QVBoxLayout(trace_container);
161 trace_layout->setSpacing(0); // We don't want space between the ruler and scrollarea
162 trace_layout->setContentsMargins(0, 0, 0, 0);
163 trace_layout->addWidget(ruler_);
164 trace_layout->addWidget(scrollarea_);
166 splitter_->addWidget(header_container);
167 splitter_->addWidget(trace_container);
168 splitter_->setHandleWidth(1); // Don't show a visible rubber band
169 splitter_->setCollapsible(0, false); // Prevent the header from collapsing
170 splitter_->setCollapsible(1, false); // Prevent the traces from collapsing
171 splitter_->setStretchFactor(0, 0); // Prevent the panes from being resized
172 splitter_->setStretchFactor(1, 1); // when the entire view is resized
173 splitter_->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
175 viewport_->installEventFilter(this);
176 ruler_->installEventFilter(this);
177 header_->installEventFilter(this);
179 // Set up settings and event handlers
180 GlobalSettings settings;
181 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
182 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
184 GlobalSettings::add_change_handler(this);
186 connect(scrollarea_->horizontalScrollBar(), SIGNAL(valueChanged(int)),
187 this, SLOT(h_scroll_value_changed(int)));
188 connect(scrollarea_->verticalScrollBar(), SIGNAL(valueChanged(int)),
189 this, SLOT(v_scroll_value_changed()));
191 connect(header_, SIGNAL(selection_changed()),
192 ruler_, SLOT(clear_selection()));
193 connect(ruler_, SIGNAL(selection_changed()),
194 header_, SLOT(clear_selection()));
196 connect(header_, SIGNAL(selection_changed()),
197 this, SIGNAL(selection_changed()));
198 connect(ruler_, SIGNAL(selection_changed()),
199 this, SIGNAL(selection_changed()));
201 connect(splitter_, SIGNAL(splitterMoved(int, int)),
202 this, SLOT(on_splitter_moved()));
204 connect(&lazy_event_handler_, SIGNAL(timeout()),
205 this, SLOT(process_sticky_events()));
206 lazy_event_handler_.setSingleShot(true);
208 // Trigger the initial event manually. The default device has signals
209 // which were created before this object came into being
212 // make sure the transparent widgets are on the top
221 GlobalSettings::remove_change_handler(this);
224 void View::reset_view_state()
226 ViewBase::reset_view_state();
228 segment_display_mode_ = Trace::ShowLastSegmentOnly;
229 segment_selectable_ = false;
233 updating_scroll_ = false;
234 settings_restored_ = false;
235 always_zoom_to_fit_ = false;
237 tick_prefix_ = pv::util::SIPrefix::yocto;
239 time_unit_ = util::TimeUnit::Time;
240 show_cursors_ = false;
241 cursors_ = make_shared<CursorPair>(*this);
242 next_flag_text_ = 'A';
243 trigger_markers_.clear();
244 hover_widget_ = nullptr;
245 hover_point_ = QPoint(-1, -1);
246 scroll_needs_defaults_ = true;
248 scale_at_acq_start_ = 0;
249 offset_at_acq_start_ = 0;
250 suppress_zoom_to_fit_after_acq_ = false;
252 show_cursors_ = false;
253 cursor_state_changed(show_cursors_);
256 // Update the zoom state
257 calculate_tick_spacing();
259 // Make sure the standard bar's segment selector is in sync
260 set_segment_display_mode(segment_display_mode_);
263 Session& View::session()
268 const Session& View::session() const
273 unordered_set< shared_ptr<Signal> > View::signals() const
278 void View::clear_signals()
280 ViewBase::clear_signalbases();
284 void View::add_signal(const shared_ptr<Signal> signal)
286 ViewBase::add_signalbase(signal->base());
287 signals_.insert(signal);
289 signal->set_segment_display_mode(segment_display_mode_);
290 signal->set_current_segment(current_segment_);
292 connect(signal->base().get(), SIGNAL(name_changed(const QString&)),
293 this, SLOT(on_signal_name_changed()));
297 void View::clear_decode_signals()
299 decode_traces_.clear();
302 void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
304 shared_ptr<DecodeTrace> d(
305 new DecodeTrace(session_, signal, decode_traces_.size()));
306 decode_traces_.push_back(d);
308 d->set_segment_display_mode(segment_display_mode_);
309 d->set_current_segment(current_segment_);
311 connect(signal.get(), SIGNAL(name_changed(const QString&)),
312 this, SLOT(on_signal_name_changed()));
315 void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
317 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
318 if ((*i)->base() == signal) {
319 decode_traces_.erase(i);
326 shared_ptr<Signal> View::get_signal_under_mouse_cursor() const
328 return signal_under_mouse_cursor_;
336 const View* View::view() const
341 Viewport* View::viewport()
346 const Viewport* View::viewport() const
351 const Ruler* View::ruler() const
356 void View::save_settings(QSettings &settings) const
358 settings.setValue("scale", scale_);
359 settings.setValue("v_offset",
360 scrollarea_->verticalScrollBar()->sliderPosition());
362 settings.setValue("splitter_state", splitter_->saveState());
363 settings.setValue("segment_display_mode", segment_display_mode_);
367 boost::archive::text_oarchive oa(ss);
368 oa << boost::serialization::make_nvp("offset", offset_);
369 settings.setValue("offset", QString::fromStdString(ss.str()));
372 for (const shared_ptr<Signal>& signal : signals_) {
373 settings.beginGroup(signal->base()->internal_name());
374 signal->save_settings(settings);
379 void View::restore_settings(QSettings &settings)
381 // Note: It is assumed that this function is only called once,
382 // immediately after restoring a previous session.
384 if (settings.contains("scale"))
385 set_scale(settings.value("scale").toDouble());
387 if (settings.contains("offset")) {
388 util::Timestamp offset;
390 ss << settings.value("offset").toString().toStdString();
393 boost::archive::text_iarchive ia(ss);
394 ia >> boost::serialization::make_nvp("offset", offset);
395 // This also updates ruler_offset_
397 } catch (boost::archive::archive_exception&) {
398 qDebug() << "Could not restore the view offset";
402 if (settings.contains("splitter_state"))
403 splitter_->restoreState(settings.value("splitter_state").toByteArray());
405 if (settings.contains("segment_display_mode"))
406 set_segment_display_mode(
407 (Trace::SegmentDisplayMode)(settings.value("segment_display_mode").toInt()));
409 for (shared_ptr<Signal> signal : signals_) {
410 settings.beginGroup(signal->base()->internal_name());
411 signal->restore_settings(settings);
415 if (settings.contains("v_offset")) {
416 saved_v_offset_ = settings.value("v_offset").toInt();
417 set_v_offset(saved_v_offset_);
418 scroll_needs_defaults_ = false;
419 // Note: see eventFilter() for additional information
422 settings_restored_ = true;
423 suppress_zoom_to_fit_after_acq_ = true;
425 // Update the ruler so that it uses the new scale
426 calculate_tick_spacing();
429 vector< shared_ptr<TimeItem> > View::time_items() const
431 const vector<shared_ptr<Flag>> f(flags());
432 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
435 items.push_back(cursors_);
436 items.push_back(cursors_->first());
437 items.push_back(cursors_->second());
440 for (auto& trigger_marker : trigger_markers_)
441 items.push_back(trigger_marker);
446 double View::scale() const
451 void View::set_scale(double scale)
453 if (scale_ != scale) {
459 void View::set_offset(const pv::util::Timestamp& offset, bool force_update)
461 if ((offset_ != offset) || force_update) {
463 ruler_offset_ = offset_ + zero_offset_;
468 const Timestamp& View::offset() const
473 const Timestamp& View::ruler_offset() const
475 return ruler_offset_;
478 void View::set_zero_position(const pv::util::Timestamp& position)
480 zero_offset_ = -position;
482 // Force an immediate update of the offsets
483 set_offset(offset_, true);
487 void View::reset_zero_position()
491 // Force an immediate update of the offsets
492 set_offset(offset_, true);
496 int View::owner_visual_v_offset() const
498 return -scrollarea_->verticalScrollBar()->sliderPosition();
501 void View::set_v_offset(int offset)
503 scrollarea_->verticalScrollBar()->setSliderPosition(offset);
508 unsigned int View::depth() const
513 uint32_t View::current_segment() const
515 return current_segment_;
518 pv::util::SIPrefix View::tick_prefix() const
523 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
525 if (tick_prefix_ != tick_prefix) {
526 tick_prefix_ = tick_prefix;
527 tick_prefix_changed();
531 unsigned int View::tick_precision() const
533 return tick_precision_;
536 void View::set_tick_precision(unsigned tick_precision)
538 if (tick_precision_ != tick_precision) {
539 tick_precision_ = tick_precision;
540 tick_precision_changed();
544 const pv::util::Timestamp& View::tick_period() const
549 unsigned int View::minor_tick_count() const
551 return minor_tick_count_;
554 void View::set_tick_period(const pv::util::Timestamp& tick_period)
556 if (tick_period_ != tick_period) {
557 tick_period_ = tick_period;
558 tick_period_changed();
562 TimeUnit View::time_unit() const
567 void View::set_time_unit(pv::util::TimeUnit time_unit)
569 if (time_unit_ != time_unit) {
570 time_unit_ = time_unit;
575 void View::set_current_segment(uint32_t segment_id)
577 current_segment_ = segment_id;
579 for (const shared_ptr<Signal>& signal : signals_)
580 signal->set_current_segment(current_segment_);
582 for (shared_ptr<DecodeTrace>& dt : decode_traces_)
583 dt->set_current_segment(current_segment_);
586 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
588 trigger_markers_.clear();
589 for (util::Timestamp timestamp : triggers)
590 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, timestamp));
592 // When enabled, the first trigger for this segment is used as the zero position
593 GlobalSettings settings;
594 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
596 if (trigger_is_zero_time && (triggers.size() > 0))
597 set_zero_position(triggers.front());
601 segment_changed(segment_id);
604 bool View::segment_is_selectable() const
606 return segment_selectable_;
609 Trace::SegmentDisplayMode View::segment_display_mode() const
611 return segment_display_mode_;
614 void View::set_segment_display_mode(Trace::SegmentDisplayMode mode)
616 segment_display_mode_ = mode;
618 for (const shared_ptr<Signal>& signal : signals_)
619 signal->set_segment_display_mode(mode);
621 uint32_t last_segment = session_.get_segment_count() - 1;
624 case Trace::ShowLastSegmentOnly:
625 if (current_segment_ != last_segment)
626 set_current_segment(last_segment);
629 case Trace::ShowLastCompleteSegmentOnly:
630 // Do nothing if we only have one segment so far
631 if (last_segment > 0) {
632 // If the last segment isn't complete, the previous one must be
633 uint32_t segment_id =
634 (session_.all_segments_complete(last_segment)) ?
635 last_segment : last_segment - 1;
637 if (current_segment_ != segment_id)
638 set_current_segment(segment_id);
642 case Trace::ShowSingleSegmentOnly:
643 case Trace::ShowAllSegments:
644 case Trace::ShowAccumulatedIntensity:
646 // Current segment remains as-is
650 segment_selectable_ = true;
652 if ((mode == Trace::ShowAllSegments) || (mode == Trace::ShowAccumulatedIntensity))
653 segment_selectable_ = false;
657 segment_display_mode_changed((int)mode, segment_selectable_);
660 void View::zoom(double steps)
662 zoom(steps, viewport_->width() / 2);
665 void View::zoom(double steps, int offset)
667 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
670 void View::zoom_fit(bool gui_state)
672 // Act as one-shot when stopped, toggle along with the GUI otherwise
673 if (session_.get_capture_state() == Session::Stopped) {
674 always_zoom_to_fit_ = false;
675 always_zoom_to_fit_changed(false);
677 always_zoom_to_fit_ = gui_state;
678 always_zoom_to_fit_changed(gui_state);
681 const pair<Timestamp, Timestamp> extents = get_time_extents();
682 const Timestamp delta = extents.second - extents.first;
683 if (delta < Timestamp("1e-12"))
687 const int w = viewport_->width();
691 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
692 set_scale_offset(scale.convert_to<double>(), extents.first);
695 void View::set_scale_offset(double scale, const Timestamp& offset)
697 // Disable sticky scrolling / always zoom to fit when acquisition runs
698 // and user drags the viewport
699 if ((scale_ == scale) && (offset_ != offset) &&
700 (session_.get_capture_state() == Session::Running)) {
702 if (sticky_scrolling_) {
703 sticky_scrolling_ = false;
704 sticky_scrolling_changed(false);
707 if (always_zoom_to_fit_) {
708 always_zoom_to_fit_ = false;
709 always_zoom_to_fit_changed(false);
716 calculate_tick_spacing();
723 set< shared_ptr<SignalData> > View::get_visible_data() const
725 // Make a set of all the visible data objects
726 set< shared_ptr<SignalData> > visible_data;
727 for (const shared_ptr<Signal>& sig : signals_)
729 visible_data.insert(sig->data());
734 pair<Timestamp, Timestamp> View::get_time_extents() const
736 boost::optional<Timestamp> left_time, right_time;
737 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
738 for (const shared_ptr<SignalData>& d : visible_data) {
739 const vector< shared_ptr<Segment> > segments = d->segments();
740 for (const shared_ptr<Segment>& s : segments) {
741 double samplerate = s->samplerate();
742 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
744 const Timestamp start_time = s->start_time();
745 left_time = left_time ?
746 min(*left_time, start_time) :
748 right_time = right_time ?
749 max(*right_time, start_time + d->max_sample_count() / samplerate) :
750 start_time + d->max_sample_count() / samplerate;
754 if (!left_time || !right_time)
755 return make_pair(0, 0);
757 assert(*left_time < *right_time);
758 return make_pair(*left_time, *right_time);
761 void View::enable_show_sampling_points(bool state)
768 void View::enable_show_analog_minor_grid(bool state)
775 void View::enable_colored_bg(bool state)
781 bool View::colored_bg() const
786 bool View::cursors_shown() const
788 return show_cursors_;
791 void View::show_cursors(bool show)
793 show_cursors_ = show;
794 cursor_state_changed(show);
799 void View::centre_cursors()
802 const double time_width = scale_ * viewport_->width();
803 cursors_->first()->set_time(offset_ + time_width * 0.4);
804 cursors_->second()->set_time(offset_ + time_width * 0.6);
811 shared_ptr<CursorPair> View::cursors() const
816 void View::add_flag(const Timestamp& time)
818 flags_.push_back(make_shared<Flag>(*this, time,
819 QString("%1").arg(next_flag_text_)));
821 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
822 (next_flag_text_ + 1);
824 time_item_appearance_changed(true, true);
827 void View::remove_flag(shared_ptr<Flag> flag)
830 time_item_appearance_changed(true, true);
833 vector< shared_ptr<Flag> > View::flags() const
835 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
836 stable_sort(flags.begin(), flags.end(),
837 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
838 return a->time() < b->time();
844 const QPoint& View::hover_point() const
849 const QWidget* View::hover_widget() const
851 return hover_widget_;
854 int64_t View::get_nearest_level_change(const QPoint &p)
856 // Is snapping disabled?
857 if (snap_distance_ == 0)
861 entry_t(shared_ptr<Signal> s) :
862 signal(s), delta(numeric_limits<int64_t>::max()), sample(-1), is_dense(false) {}
863 shared_ptr<Signal> signal;
869 vector<entry_t> list;
871 // Create list of signals to consider
872 if (signal_under_mouse_cursor_)
873 list.emplace_back(signal_under_mouse_cursor_);
875 for (shared_ptr<Signal> s : signals_) {
879 list.emplace_back(s);
882 // Get data for listed signals
883 for (entry_t &e : list) {
884 // Calculate sample number from cursor position
885 const double samples_per_pixel = e.signal->base()->get_samplerate() * scale();
886 const int64_t x_offset = offset().convert_to<double>() / scale();
887 const int64_t sample_num = max(((x_offset + p.x()) * samples_per_pixel), 0.0);
889 vector<data::LogicSegment::EdgePair> edges =
890 e.signal->get_nearest_level_changes(sample_num);
896 const int64_t first_sample_delta = abs(sample_num - edges.front().first);
897 const int64_t first_delta = first_sample_delta / samples_per_pixel;
898 e.delta = first_delta;
899 e.sample = edges.front().first;
901 // Check second edge if available
902 if (edges.size() == 2) {
903 // Note: -1 because this is usually the right edge and sample points are left-aligned
904 const int64_t second_sample_delta = abs(sample_num - edges.back().first - 1);
905 const int64_t second_delta = second_sample_delta / samples_per_pixel;
907 // If both edges are too close, we mark this signal as being dense
908 if ((first_delta + second_delta) <= snap_distance_)
911 if (second_delta < first_delta) {
912 e.delta = second_delta;
913 e.sample = edges.back().first;
918 // Look for the best match: non-dense first, then dense
919 entry_t *match = nullptr;
921 for (entry_t &e : list) {
922 if (e.delta > snap_distance_ || e.is_dense)
926 if (e.delta < match->delta)
933 for (entry_t &e : list) {
938 if (e.delta < match->delta)
946 // Somewhat ugly hack to make TimeItem::drag_by() work
947 signal_under_mouse_cursor_ = match->signal;
949 return match->sample;
955 void View::restack_all_trace_tree_items()
957 // Make a list of owners that is sorted from deepest first
958 const vector<shared_ptr<TraceTreeItem>> items(
959 list_by_type<TraceTreeItem>());
960 set< TraceTreeItemOwner* > owners;
961 for (const auto &r : items)
962 owners.insert(r->owner());
963 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
964 sort(sorted_owners.begin(), sorted_owners.end(),
965 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
966 return a->depth() > b->depth(); });
968 // Restack the items recursively
969 for (auto &o : sorted_owners)
972 // Animate the items to their destination
973 for (const auto &i : items)
974 i->animate_to_layout_v_offset();
977 int View::header_width() const
979 return header_->extended_size_hint().width();
982 void View::on_setting_changed(const QString &key, const QVariant &value)
984 if (key == GlobalSettings::Key_View_TriggerIsZeroTime)
985 on_settingViewTriggerIsZeroTime_changed(value);
987 if (key == GlobalSettings::Key_View_SnapDistance) {
988 GlobalSettings settings;
989 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
993 void View::trigger_event(int segment_id, util::Timestamp location)
995 // TODO This doesn't work if we're showing multiple segments at once
996 if ((uint32_t)segment_id != current_segment_)
999 // Set zero location if the Key_View_TriggerIsZeroTime setting is set and
1000 // if this is the first trigger for this segment.
1001 GlobalSettings settings;
1002 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
1004 size_t trigger_count = session_.get_triggers(current_segment_).size();
1006 if (trigger_is_zero_time && trigger_count == 1)
1007 set_zero_position(location);
1009 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
1012 void View::get_scroll_layout(double &length, Timestamp &offset) const
1014 const pair<Timestamp, Timestamp> extents = get_time_extents();
1015 length = ((extents.second - extents.first) / scale_).convert_to<double>();
1016 offset = offset_ / scale_;
1019 void View::set_zoom(double scale, int offset)
1021 // Reset the "always zoom to fit" feature as the user changed the zoom
1022 always_zoom_to_fit_ = false;
1023 always_zoom_to_fit_changed(false);
1025 const Timestamp cursor_offset = offset_ + scale_ * offset;
1026 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
1027 const Timestamp new_offset = cursor_offset - new_scale * offset;
1028 set_scale_offset(new_scale.convert_to<double>(), new_offset);
1031 void View::calculate_tick_spacing()
1033 const double SpacingIncrement = 10.0f;
1034 const double MinValueSpacing = 40.0f;
1036 // Figure out the highest numeric value visible on a label
1037 const QSize areaSize = viewport_->size();
1038 const Timestamp max_time = max(fabs(offset_),
1039 fabs(offset_ + scale_ * areaSize.width()));
1041 double min_width = SpacingIncrement;
1042 double label_width, tick_period_width;
1044 QFontMetrics m(QApplication::font());
1046 // Copies of the member variables with the same name, used in the calculation
1047 // and written back afterwards, so that we don't emit signals all the time
1048 // during the calculation.
1049 pv::util::Timestamp tick_period = tick_period_;
1050 pv::util::SIPrefix tick_prefix = tick_prefix_;
1051 unsigned tick_precision = tick_precision_;
1054 const double min_period = scale_ * min_width;
1056 const int order = (int)floorf(log10f(min_period));
1057 const pv::util::Timestamp order_decimal =
1058 pow(pv::util::Timestamp(10), order);
1060 // Allow for a margin of error so that a scale unit of 1 can be used.
1061 // Otherwise, for a SU of 1 the tick period will almost always be below
1062 // the min_period by a small amount - and thus skipped in favor of 2.
1063 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
1064 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
1065 double tp_with_margin;
1066 unsigned int unit = 0;
1069 tp_with_margin = order_decimal.convert_to<double>() *
1070 (ScaleUnits[unit++] + tp_margin);
1071 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
1073 minor_tick_count_ = (unit == 2) ? 4 : 5;
1074 tick_period = order_decimal * ScaleUnits[unit - 1];
1075 tick_prefix = static_cast<pv::util::SIPrefix>(
1076 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
1078 // Precision is the number of fractional digits required, not
1079 // taking the prefix into account (and it must never be negative)
1080 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
1082 tick_period_width = (tick_period / scale_).convert_to<double>();
1084 const QString label_text = Ruler::format_time_with_distance(
1085 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
1087 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
1088 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
1091 min_width += SpacingIncrement;
1092 } while (tick_period_width < label_width);
1094 set_tick_period(tick_period);
1095 set_tick_prefix(tick_prefix);
1096 set_tick_precision(tick_precision);
1099 void View::adjust_top_margin()
1103 const QSize areaSize = viewport_->size();
1105 const pair<int, int> extents = v_extents();
1106 const int top_margin = owner_visual_v_offset() + extents.first;
1107 const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second;
1109 // Do we have empty space at the top while the last trace goes out of screen?
1110 if ((top_margin > 0) && (trace_bottom > areaSize.height())) {
1111 const int trace_height = extents.second - extents.first;
1113 // Center everything vertically if there is enough space
1114 if (areaSize.height() >= trace_height)
1115 set_v_offset(extents.first -
1116 ((areaSize.height() - trace_height) / 2));
1118 // Remove the top margin to make as many traces fit on screen as possible
1119 set_v_offset(extents.first);
1123 void View::update_scroll()
1126 QScrollBar *hscrollbar = scrollarea_->horizontalScrollBar();
1127 QScrollBar *vscrollbar = scrollarea_->verticalScrollBar();
1129 const QSize areaSize = viewport_->size();
1131 // Set the horizontal scroll bar
1134 get_scroll_layout(length, offset);
1135 length = max(length - areaSize.width(), 0.0);
1137 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
1139 hscrollbar->setPageStep(areaSize.width() / 2);
1140 hscrollbar->setSingleStep(major_tick_distance);
1142 updating_scroll_ = true;
1144 if (length < MaxScrollValue) {
1145 hscrollbar->setRange(0, length);
1146 hscrollbar->setSliderPosition(offset.convert_to<double>());
1148 hscrollbar->setRange(0, MaxScrollValue);
1149 hscrollbar->setSliderPosition(
1150 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
1153 updating_scroll_ = false;
1155 // Set the vertical scrollbar
1156 vscrollbar->setPageStep(areaSize.height());
1157 vscrollbar->setSingleStep(areaSize.height() / 8);
1159 const pair<int, int> extents = v_extents();
1161 // Don't change the scrollbar range if there are no traces
1162 if (extents.first != extents.second)
1163 vscrollbar->setRange(extents.first - areaSize.height(),
1166 if (scroll_needs_defaults_) {
1167 set_scroll_default();
1168 scroll_needs_defaults_ = false;
1172 void View::reset_scroll()
1174 scrollarea_->verticalScrollBar()->setRange(0, 0);
1177 void View::set_scroll_default()
1181 const QSize areaSize = viewport_->size();
1183 const pair<int, int> extents = v_extents();
1184 const int trace_height = extents.second - extents.first;
1186 // Do all traces fit in the view?
1187 if (areaSize.height() >= trace_height)
1188 // Center all traces vertically
1189 set_v_offset(extents.first -
1190 ((areaSize.height() - trace_height) / 2));
1192 // Put the first trace at the top, letting the bottom ones overflow
1193 set_v_offset(extents.first);
1196 void View::determine_if_header_was_shrunk()
1198 const int header_pane_width =
1199 splitter_->sizes().front(); // clazy:exclude=detaching-temporary
1201 // Allow for a slight margin of error so that we also accept
1202 // slight differences when e.g. a label name change increased
1203 // the overall width
1204 header_was_shrunk_ = (header_pane_width < (header_width() - 10));
1207 void View::resize_header_to_fit()
1209 // Setting the maximum width of the header widget doesn't work as
1210 // expected because the splitter would allow the user to make the
1211 // pane wider than that, creating empty space as a result.
1212 // To make this work, we stricly enforce the maximum width by
1213 // expanding the header unless the user shrunk it on purpose.
1214 // As we're then setting the width of the header pane, we set the
1215 // splitter to the maximum allowed position.
1217 int splitter_area_width = 0;
1218 for (int w : splitter_->sizes()) // clazy:exclude=range-loop
1219 splitter_area_width += w;
1221 // Make sure the header has enough horizontal space to show all labels fully
1222 QList<int> pane_sizes;
1223 pane_sizes.push_back(header_->extended_size_hint().width());
1224 pane_sizes.push_back(splitter_area_width - header_->extended_size_hint().width());
1225 splitter_->setSizes(pane_sizes);
1228 void View::update_layout()
1233 TraceTreeItemOwner* View::find_prevalent_trace_group(
1234 const shared_ptr<sigrok::ChannelGroup> &group,
1235 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1240 unordered_set<TraceTreeItemOwner*> owners;
1241 vector<TraceTreeItemOwner*> owner_list;
1243 // Make a set and a list of all the owners
1244 for (const auto& channel : group->channels()) {
1245 for (auto& entry : signal_map) {
1246 if (entry.first->channel() == channel) {
1247 TraceTreeItemOwner *const o = (entry.second)->owner();
1248 owner_list.push_back(o);
1254 // Iterate through the list of owners, and find the most prevalent
1255 size_t max_prevalence = 0;
1256 TraceTreeItemOwner *prevalent_owner = nullptr;
1257 for (TraceTreeItemOwner *owner : owners) {
1258 const size_t prevalence = count_if(
1259 owner_list.begin(), owner_list.end(),
1260 [&](TraceTreeItemOwner *o) { return o == owner; });
1261 if (prevalence > max_prevalence) {
1262 max_prevalence = prevalence;
1263 prevalent_owner = owner;
1267 return prevalent_owner;
1270 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
1271 const vector< shared_ptr<sigrok::Channel> > &channels,
1272 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1274 set< shared_ptr<Trace> > &add_list)
1276 vector< shared_ptr<Trace> > filtered_traces;
1278 for (const auto& channel : channels) {
1279 for (auto& entry : signal_map) {
1280 if (entry.first->channel() == channel) {
1281 shared_ptr<Trace> trace = entry.second;
1282 const auto list_iter = add_list.find(trace);
1283 if (list_iter == add_list.end())
1286 filtered_traces.push_back(trace);
1287 add_list.erase(list_iter);
1292 return filtered_traces;
1295 void View::determine_time_unit()
1297 // Check whether we know the sample rate and hence can use time as the unit
1298 if (time_unit_ == util::TimeUnit::Samples) {
1299 // Check all signals but...
1300 for (const shared_ptr<Signal>& signal : signals_) {
1301 const shared_ptr<SignalData> data = signal->data();
1303 // ...only check first segment of each
1304 const vector< shared_ptr<Segment> > segments = data->segments();
1305 if (!segments.empty())
1306 if (segments[0]->samplerate()) {
1307 set_time_unit(util::TimeUnit::Time);
1314 bool View::eventFilter(QObject *object, QEvent *event)
1316 const QEvent::Type type = event->type();
1317 if (type == QEvent::MouseMove) {
1320 hover_widget_ = qobject_cast<QWidget*>(object);
1322 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1323 if (object == viewport_)
1324 hover_point_ = mouse_event->pos();
1325 else if (object == ruler_)
1326 hover_point_ = mouse_event->pos();
1327 else if (object == header_)
1328 hover_point_ = QPoint(0, mouse_event->y());
1330 hover_point_ = QPoint(-1, -1);
1332 update_hover_point();
1334 } else if (type == QEvent::Leave) {
1335 hover_point_ = QPoint(-1, -1);
1336 update_hover_point();
1337 } else if (type == QEvent::Show) {
1339 // This is somewhat of a hack, unfortunately. We cannot use
1340 // set_v_offset() from within restore_settings() as the view
1341 // at that point is neither visible nor properly sized.
1342 // This is the least intrusive workaround I could come up
1343 // with: set the vertical offset (or scroll defaults) when
1344 // the view is shown, which happens after all widgets were
1345 // resized to their final sizes.
1348 if (settings_restored_)
1349 determine_if_header_was_shrunk();
1351 resize_header_to_fit();
1353 if (scroll_needs_defaults_) {
1354 set_scroll_default();
1355 scroll_needs_defaults_ = false;
1358 if (saved_v_offset_) {
1359 set_v_offset(saved_v_offset_);
1360 saved_v_offset_ = 0;
1364 return QObject::eventFilter(object, event);
1367 void View::contextMenuEvent(QContextMenuEvent *event)
1369 QPoint pos = event->pos() - QPoint(0, ruler_->sizeHint().height());
1371 const shared_ptr<ViewItem> r = viewport_->get_mouse_over_item(pos);
1375 QMenu *menu = r->create_view_context_menu(this, pos);
1377 menu->popup(event->globalPos());
1380 void View::resizeEvent(QResizeEvent* event)
1382 // Only adjust the top margin if we shrunk vertically
1383 if (event->size().height() < event->oldSize().height())
1384 adjust_top_margin();
1389 void View::update_hover_point()
1391 // Determine signal that the mouse cursor is hovering over
1392 signal_under_mouse_cursor_.reset();
1393 if (hover_widget_ == this) {
1394 for (const shared_ptr<Signal>& s : signals_) {
1395 const pair<int, int> extents = s->v_extents();
1396 const int top = s->get_visual_y() + extents.first;
1397 const int btm = s->get_visual_y() + extents.second;
1398 if ((hover_point_.y() >= top) && (hover_point_.y() <= btm)
1399 && s->base()->enabled())
1400 signal_under_mouse_cursor_ = s;
1404 // Update all trace tree items
1405 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1406 list_by_type<TraceTreeItem>());
1407 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1408 r->hover_point_changed(hover_point_);
1410 // Notify any other listeners
1411 hover_point_changed(hover_widget_, hover_point_);
1414 void View::row_item_appearance_changed(bool label, bool content)
1419 viewport_->update();
1422 void View::time_item_appearance_changed(bool label, bool content)
1427 // Make sure the header pane width is updated, too
1432 viewport_->update();
1435 void View::extents_changed(bool horz, bool vert)
1438 (horz ? TraceTreeItemHExtentsChanged : 0) |
1439 (vert ? TraceTreeItemVExtentsChanged : 0);
1441 lazy_event_handler_.stop();
1442 lazy_event_handler_.start();
1445 void View::on_signal_name_changed()
1447 if (!header_was_shrunk_)
1448 resize_header_to_fit();
1451 void View::on_splitter_moved()
1453 // The header can only shrink when the splitter is moved manually
1454 determine_if_header_was_shrunk();
1456 if (!header_was_shrunk_)
1457 resize_header_to_fit();
1460 void View::h_scroll_value_changed(int value)
1462 if (updating_scroll_)
1465 // Disable sticky scrolling when user moves the horizontal scroll bar
1466 // during a running acquisition
1467 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1468 sticky_scrolling_ = false;
1469 sticky_scrolling_changed(false);
1472 const int range = scrollarea_->horizontalScrollBar()->maximum();
1473 if (range < MaxScrollValue)
1474 set_offset(scale_ * value);
1478 get_scroll_layout(length, offset);
1479 set_offset(scale_ * length * value / MaxScrollValue);
1483 viewport_->update();
1486 void View::v_scroll_value_changed()
1489 viewport_->update();
1492 void View::signals_changed()
1494 using sigrok::Channel;
1496 vector< shared_ptr<Channel> > channels;
1497 shared_ptr<sigrok::Device> sr_dev;
1498 bool signals_added_or_removed = false;
1500 // Do we need to set the vertical scrollbar to its default position later?
1501 // We do if there are no traces, i.e. the scroll bar has no range set
1502 bool reset_scrollbar =
1503 (scrollarea_->verticalScrollBar()->minimum() ==
1504 scrollarea_->verticalScrollBar()->maximum());
1506 if (!session_.device()) {
1510 sr_dev = session_.device()->device();
1512 channels = sr_dev->channels();
1515 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1517 // Make a list of traces that are being added, and a list of traces
1518 // that are being removed
1519 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1520 const set<shared_ptr<Trace>> prev_traces(
1521 prev_trace_list.begin(), prev_trace_list.end());
1523 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1525 #ifdef ENABLE_DECODE
1526 traces.insert(decode_traces_.begin(), decode_traces_.end());
1529 set< shared_ptr<Trace> > add_traces;
1530 set_difference(traces.begin(), traces.end(),
1531 prev_traces.begin(), prev_traces.end(),
1532 inserter(add_traces, add_traces.begin()));
1534 set< shared_ptr<Trace> > remove_traces;
1535 set_difference(prev_traces.begin(), prev_traces.end(),
1536 traces.begin(), traces.end(),
1537 inserter(remove_traces, remove_traces.begin()));
1539 // Make a look-up table of sigrok Channels to pulseview Signals
1540 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1542 for (const shared_ptr<Signal>& sig : signals_)
1543 signal_map[sig->base()] = sig;
1545 // Populate channel groups
1547 for (auto& entry : sr_dev->channel_groups()) {
1548 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1550 if (group->channels().size() <= 1)
1553 // Find best trace group to add to
1554 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1557 // If there is no trace group, create one
1558 shared_ptr<TraceGroup> new_trace_group;
1560 new_trace_group.reset(new TraceGroup());
1561 owner = new_trace_group.get();
1564 // Extract traces for the trace group, removing them from
1566 const vector< shared_ptr<Trace> > new_traces_in_group =
1567 extract_new_traces_for_channels(group->channels(),
1568 signal_map, add_traces);
1570 // Add the traces to the group
1571 const pair<int, int> prev_v_extents = owner->v_extents();
1572 int offset = prev_v_extents.second - prev_v_extents.first;
1573 for (const shared_ptr<Trace>& trace : new_traces_in_group) {
1575 owner->add_child_item(trace);
1577 const pair<int, int> extents = trace->v_extents();
1578 if (trace->enabled())
1579 offset += -extents.first;
1580 trace->force_to_v_offset(offset);
1581 if (trace->enabled())
1582 offset += extents.second;
1585 if (new_trace_group) {
1586 // Assign proper vertical offsets to each channel in the group
1587 new_trace_group->restack_items();
1589 // If this is a new group, enqueue it in the new top level
1591 if (!new_traces_in_group.empty())
1592 new_top_level_items.push_back(new_trace_group);
1596 // Enqueue the remaining logic channels in a group
1597 vector< shared_ptr<Channel> > logic_channels;
1598 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1599 [](const shared_ptr<Channel>& c) {
1600 return c->type() == sigrok::ChannelType::LOGIC; });
1602 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1603 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1605 if (non_grouped_logic_signals.size() > 0) {
1606 const shared_ptr<TraceGroup> non_grouped_trace_group(
1607 make_shared<TraceGroup>());
1608 for (const shared_ptr<Trace>& trace : non_grouped_logic_signals)
1609 non_grouped_trace_group->add_child_item(trace);
1611 non_grouped_trace_group->restack_items();
1612 new_top_level_items.push_back(non_grouped_trace_group);
1615 // Enqueue the remaining channels as free ungrouped traces
1616 const vector< shared_ptr<Trace> > new_top_level_signals =
1617 extract_new_traces_for_channels(channels, signal_map, add_traces);
1618 new_top_level_items.insert(new_top_level_items.end(),
1619 new_top_level_signals.begin(), new_top_level_signals.end());
1621 // Enqueue any remaining traces i.e. decode traces
1622 new_top_level_items.insert(new_top_level_items.end(),
1623 add_traces.begin(), add_traces.end());
1625 // Remove any removed traces
1626 for (const shared_ptr<Trace>& trace : remove_traces) {
1627 TraceTreeItemOwner *const owner = trace->owner();
1629 owner->remove_child_item(trace);
1630 signals_added_or_removed = true;
1633 // Remove any empty trace groups
1634 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1635 if (group->child_items().size() == 0) {
1636 remove_child_item(group);
1640 // Add and position the pending top levels items
1641 int offset = v_extents().second;
1642 for (auto item : new_top_level_items) {
1643 add_child_item(item);
1645 // Position the item after the last item or at the top if there is none
1646 const pair<int, int> extents = item->v_extents();
1648 if (item->enabled())
1649 offset += -extents.first;
1651 item->force_to_v_offset(offset);
1653 if (item->enabled())
1654 offset += extents.second;
1655 signals_added_or_removed = true;
1659 if (signals_added_or_removed && !header_was_shrunk_)
1660 resize_header_to_fit();
1665 viewport_->update();
1667 if (reset_scrollbar)
1668 set_scroll_default();
1671 void View::capture_state_updated(int state)
1673 GlobalSettings settings;
1675 if (state == Session::Running) {
1676 set_time_unit(util::TimeUnit::Samples);
1678 trigger_markers_.clear();
1679 set_zero_position(0);
1681 scale_at_acq_start_ = scale_;
1682 offset_at_acq_start_ = offset_;
1684 // Activate "always zoom to fit" if the setting is enabled and we're
1685 // the main view of this session (other trace views may be used for
1686 // zooming and we don't want to mess them up)
1687 bool state = settings.value(GlobalSettings::Key_View_ZoomToFitDuringAcq).toBool();
1688 if (is_main_view_ && state) {
1689 always_zoom_to_fit_ = true;
1690 always_zoom_to_fit_changed(always_zoom_to_fit_);
1693 // Enable sticky scrolling if the setting is enabled
1694 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
1696 // Reset all traces to segment 0
1697 current_segment_ = 0;
1698 set_current_segment(current_segment_);
1701 if (state == Session::Stopped) {
1702 // After acquisition has stopped we need to re-calculate the ticks once
1703 // as it's otherwise done when the user pans or zooms, which is too late
1704 calculate_tick_spacing();
1706 // Reset "always zoom to fit", the acquisition has stopped
1707 if (always_zoom_to_fit_) {
1708 // Perform a final zoom-to-fit before disabling
1709 zoom_fit(always_zoom_to_fit_);
1710 always_zoom_to_fit_ = false;
1711 always_zoom_to_fit_changed(always_zoom_to_fit_);
1714 bool zoom_to_fit_after_acq =
1715 settings.value(GlobalSettings::Key_View_ZoomToFitAfterAcq).toBool();
1717 // Only perform zoom-to-fit if the user hasn't altered the viewport and
1718 // we didn't restore settings in the meanwhile
1719 if (zoom_to_fit_after_acq &&
1720 !suppress_zoom_to_fit_after_acq_ &&
1721 (scale_ == scale_at_acq_start_) &&
1722 (offset_ == offset_at_acq_start_))
1723 zoom_fit(false); // We're stopped, so the GUI state doesn't matter
1725 suppress_zoom_to_fit_after_acq_ = false;
1729 void View::on_new_segment(int new_segment_id)
1731 on_segment_changed(new_segment_id);
1734 void View::on_segment_completed(int segment_id)
1736 on_segment_changed(segment_id);
1739 void View::on_segment_changed(int segment)
1741 switch (segment_display_mode_) {
1742 case Trace::ShowLastSegmentOnly:
1743 case Trace::ShowSingleSegmentOnly:
1744 set_current_segment(segment);
1747 case Trace::ShowLastCompleteSegmentOnly:
1748 // Only update if all segments are complete
1749 if (session_.all_segments_complete(segment))
1750 set_current_segment(segment);
1753 case Trace::ShowAllSegments:
1754 case Trace::ShowAccumulatedIntensity:
1760 void View::on_settingViewTriggerIsZeroTime_changed(const QVariant new_value)
1762 if (new_value.toBool()) {
1763 // The first trigger for this segment is used as the zero position
1764 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
1765 if (triggers.size() > 0)
1766 set_zero_position(triggers.front());
1768 reset_zero_position();
1771 void View::perform_delayed_view_update()
1773 if (always_zoom_to_fit_) {
1775 } else if (sticky_scrolling_) {
1776 // Make right side of the view sticky
1779 get_scroll_layout(length, offset);
1781 const QSize areaSize = viewport_->size();
1782 length = max(length - areaSize.width(), 0.0);
1784 set_offset(scale_ * length);
1787 determine_time_unit();
1790 viewport_->update();
1793 void View::process_sticky_events()
1795 if (sticky_events_ & TraceTreeItemHExtentsChanged)
1797 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
1798 restack_all_trace_tree_items();
1802 // Clear the sticky events
1806 } // namespace trace
1807 } // namespace views