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_point_ = QPoint(-1, -1);
245 scroll_needs_defaults_ = true;
247 scale_at_acq_start_ = 0;
248 offset_at_acq_start_ = 0;
249 suppress_zoom_to_fit_after_acq_ = false;
251 show_cursors_ = false;
252 cursor_state_changed(show_cursors_);
255 // Update the zoom state
256 calculate_tick_spacing();
258 // Make sure the standard bar's segment selector is in sync
259 set_segment_display_mode(segment_display_mode_);
262 Session& View::session()
267 const Session& View::session() const
272 unordered_set< shared_ptr<Signal> > View::signals() const
277 void View::clear_signals()
279 ViewBase::clear_signalbases();
283 void View::add_signal(const shared_ptr<Signal> signal)
285 ViewBase::add_signalbase(signal->base());
286 signals_.insert(signal);
288 signal->set_segment_display_mode(segment_display_mode_);
289 signal->set_current_segment(current_segment_);
291 connect(signal->base().get(), SIGNAL(name_changed(const QString&)),
292 this, SLOT(on_signal_name_changed()));
296 void View::clear_decode_signals()
298 decode_traces_.clear();
301 void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
303 shared_ptr<DecodeTrace> d(
304 new DecodeTrace(session_, signal, decode_traces_.size()));
305 decode_traces_.push_back(d);
307 d->set_segment_display_mode(segment_display_mode_);
308 d->set_current_segment(current_segment_);
310 connect(signal.get(), SIGNAL(name_changed(const QString&)),
311 this, SLOT(on_signal_name_changed()));
314 void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
316 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
317 if ((*i)->base() == signal) {
318 decode_traces_.erase(i);
325 shared_ptr<Signal> View::get_signal_under_mouse_cursor() const
327 return signal_under_mouse_cursor_;
335 const View* View::view() const
340 Viewport* View::viewport()
345 const Viewport* View::viewport() const
350 void View::save_settings(QSettings &settings) const
352 settings.setValue("scale", scale_);
353 settings.setValue("v_offset",
354 scrollarea_->verticalScrollBar()->sliderPosition());
356 settings.setValue("splitter_state", splitter_->saveState());
357 settings.setValue("segment_display_mode", segment_display_mode_);
361 boost::archive::text_oarchive oa(ss);
362 oa << boost::serialization::make_nvp("ruler_shift", ruler_shift_);
363 settings.setValue("ruler_shift", QString::fromStdString(ss.str()));
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 (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("ruler_shift")) {
388 util::Timestamp shift;
390 ss << settings.value("ruler_shift").toString().toStdString();
393 boost::archive::text_iarchive ia(ss);
394 ia >> boost::serialization::make_nvp("ruler_shift", shift);
395 ruler_shift_ = shift;
396 } catch (boost::archive::archive_exception&) {
397 qDebug() << "Could not restore the view ruler shift";
401 if (settings.contains("offset")) {
402 util::Timestamp offset;
404 ss << settings.value("offset").toString().toStdString();
407 boost::archive::text_iarchive ia(ss);
408 ia >> boost::serialization::make_nvp("offset", offset);
409 // This also updates ruler_offset_
411 } catch (boost::archive::archive_exception&) {
412 qDebug() << "Could not restore the view offset";
416 if (settings.contains("splitter_state"))
417 splitter_->restoreState(settings.value("splitter_state").toByteArray());
419 if (settings.contains("segment_display_mode"))
420 set_segment_display_mode(
421 (Trace::SegmentDisplayMode)(settings.value("segment_display_mode").toInt()));
423 for (shared_ptr<Signal> signal : signals_) {
424 settings.beginGroup(signal->base()->internal_name());
425 signal->restore_settings(settings);
429 if (settings.contains("v_offset")) {
430 saved_v_offset_ = settings.value("v_offset").toInt();
431 set_v_offset(saved_v_offset_);
432 scroll_needs_defaults_ = false;
433 // Note: see eventFilter() for additional information
436 settings_restored_ = true;
437 suppress_zoom_to_fit_after_acq_ = true;
439 // Update the ruler so that it uses the new scale
440 calculate_tick_spacing();
443 vector< shared_ptr<TimeItem> > View::time_items() const
445 const vector<shared_ptr<Flag>> f(flags());
446 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
449 items.push_back(cursors_);
450 items.push_back(cursors_->first());
451 items.push_back(cursors_->second());
454 for (auto trigger_marker : trigger_markers_)
455 items.push_back(trigger_marker);
460 double View::scale() const
465 void View::set_scale(double scale)
467 if (scale_ != scale) {
473 void View::set_offset(const pv::util::Timestamp& offset, bool force_update)
475 if ((offset_ != offset) || force_update) {
477 ruler_offset_ = offset_ + ruler_shift_;
482 const Timestamp& View::offset() const
487 const Timestamp& View::ruler_offset() const
489 return ruler_offset_;
492 void View::set_zero_position(pv::util::Timestamp& position)
494 ruler_shift_ = -position;
496 // Force an immediate update of the offsets
497 set_offset(offset_, true);
501 void View::reset_zero_position()
505 // Force an immediate update of the offsets
506 set_offset(offset_, true);
510 int View::owner_visual_v_offset() const
512 return -scrollarea_->verticalScrollBar()->sliderPosition();
515 void View::set_v_offset(int offset)
517 scrollarea_->verticalScrollBar()->setSliderPosition(offset);
522 unsigned int View::depth() const
527 uint32_t View::current_segment() const
529 return current_segment_;
532 pv::util::SIPrefix View::tick_prefix() const
537 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
539 if (tick_prefix_ != tick_prefix) {
540 tick_prefix_ = tick_prefix;
541 tick_prefix_changed();
545 unsigned int View::tick_precision() const
547 return tick_precision_;
550 void View::set_tick_precision(unsigned tick_precision)
552 if (tick_precision_ != tick_precision) {
553 tick_precision_ = tick_precision;
554 tick_precision_changed();
558 const pv::util::Timestamp& View::tick_period() const
563 unsigned int View::minor_tick_count() const
565 return minor_tick_count_;
568 void View::set_tick_period(const pv::util::Timestamp& tick_period)
570 if (tick_period_ != tick_period) {
571 tick_period_ = tick_period;
572 tick_period_changed();
576 TimeUnit View::time_unit() const
581 void View::set_time_unit(pv::util::TimeUnit time_unit)
583 if (time_unit_ != time_unit) {
584 time_unit_ = time_unit;
589 void View::set_current_segment(uint32_t segment_id)
591 current_segment_ = segment_id;
593 for (shared_ptr<Signal> signal : signals_)
594 signal->set_current_segment(current_segment_);
596 for (shared_ptr<DecodeTrace> dt : decode_traces_)
597 dt->set_current_segment(current_segment_);
600 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
602 trigger_markers_.clear();
603 for (util::Timestamp timestamp : triggers)
604 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, timestamp));
606 // When enabled, the first trigger for this segment is used as the zero position
607 GlobalSettings settings;
608 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
610 if (trigger_is_zero_time && (triggers.size() > 0))
611 set_zero_position(triggers.front());
615 segment_changed(segment_id);
618 bool View::segment_is_selectable() const
620 return segment_selectable_;
623 Trace::SegmentDisplayMode View::segment_display_mode() const
625 return segment_display_mode_;
628 void View::set_segment_display_mode(Trace::SegmentDisplayMode mode)
630 segment_display_mode_ = mode;
632 for (shared_ptr<Signal> signal : signals_)
633 signal->set_segment_display_mode(mode);
635 uint32_t last_segment = session_.get_segment_count() - 1;
638 case Trace::ShowLastSegmentOnly:
639 if (current_segment_ != last_segment)
640 set_current_segment(last_segment);
643 case Trace::ShowLastCompleteSegmentOnly:
644 // Do nothing if we only have one segment so far
645 if (last_segment > 0) {
646 // If the last segment isn't complete, the previous one must be
647 uint32_t segment_id =
648 (session_.all_segments_complete(last_segment)) ?
649 last_segment : last_segment - 1;
651 if (current_segment_ != segment_id)
652 set_current_segment(segment_id);
656 case Trace::ShowSingleSegmentOnly:
657 case Trace::ShowAllSegments:
658 case Trace::ShowAccumulatedIntensity:
660 // Current segment remains as-is
664 segment_selectable_ = true;
666 if ((mode == Trace::ShowAllSegments) || (mode == Trace::ShowAccumulatedIntensity))
667 segment_selectable_ = false;
671 segment_display_mode_changed((int)mode, segment_selectable_);
674 void View::zoom(double steps)
676 zoom(steps, viewport_->width() / 2);
679 void View::zoom(double steps, int offset)
681 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
684 void View::zoom_fit(bool gui_state)
686 // Act as one-shot when stopped, toggle along with the GUI otherwise
687 if (session_.get_capture_state() == Session::Stopped) {
688 always_zoom_to_fit_ = false;
689 always_zoom_to_fit_changed(false);
691 always_zoom_to_fit_ = gui_state;
692 always_zoom_to_fit_changed(gui_state);
695 const pair<Timestamp, Timestamp> extents = get_time_extents();
696 const Timestamp delta = extents.second - extents.first;
697 if (delta < Timestamp("1e-12"))
701 const int w = viewport_->width();
705 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
706 set_scale_offset(scale.convert_to<double>(), extents.first);
709 void View::set_scale_offset(double scale, const Timestamp& offset)
711 // Disable sticky scrolling / always zoom to fit when acquisition runs
712 // and user drags the viewport
713 if ((scale_ == scale) && (offset_ != offset) &&
714 (session_.get_capture_state() == Session::Running)) {
716 if (sticky_scrolling_) {
717 sticky_scrolling_ = false;
718 sticky_scrolling_changed(false);
721 if (always_zoom_to_fit_) {
722 always_zoom_to_fit_ = false;
723 always_zoom_to_fit_changed(false);
730 calculate_tick_spacing();
737 set< shared_ptr<SignalData> > View::get_visible_data() const
739 // Make a set of all the visible data objects
740 set< shared_ptr<SignalData> > visible_data;
741 for (const shared_ptr<Signal> sig : signals_)
743 visible_data.insert(sig->data());
748 pair<Timestamp, Timestamp> View::get_time_extents() const
750 boost::optional<Timestamp> left_time, right_time;
751 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
752 for (const shared_ptr<SignalData> d : visible_data) {
753 const vector< shared_ptr<Segment> > segments = d->segments();
754 for (const shared_ptr<Segment> &s : segments) {
755 double samplerate = s->samplerate();
756 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
758 const Timestamp start_time = s->start_time();
759 left_time = left_time ?
760 min(*left_time, start_time) :
762 right_time = right_time ?
763 max(*right_time, start_time + d->max_sample_count() / samplerate) :
764 start_time + d->max_sample_count() / samplerate;
768 if (!left_time || !right_time)
769 return make_pair(0, 0);
771 assert(*left_time < *right_time);
772 return make_pair(*left_time, *right_time);
775 void View::enable_show_sampling_points(bool state)
782 void View::enable_show_analog_minor_grid(bool state)
789 void View::enable_colored_bg(bool state)
795 bool View::colored_bg() const
800 bool View::cursors_shown() const
802 return show_cursors_;
805 void View::show_cursors(bool show)
807 show_cursors_ = show;
808 cursor_state_changed(show);
813 void View::centre_cursors()
816 const double time_width = scale_ * viewport_->width();
817 cursors_->first()->set_time(offset_ + time_width * 0.4);
818 cursors_->second()->set_time(offset_ + time_width * 0.6);
825 shared_ptr<CursorPair> View::cursors() const
830 void View::add_flag(const Timestamp& time)
832 flags_.push_back(make_shared<Flag>(*this, time,
833 QString("%1").arg(next_flag_text_)));
835 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
836 (next_flag_text_ + 1);
838 time_item_appearance_changed(true, true);
841 void View::remove_flag(shared_ptr<Flag> flag)
844 time_item_appearance_changed(true, true);
847 vector< shared_ptr<Flag> > View::flags() const
849 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
850 stable_sort(flags.begin(), flags.end(),
851 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
852 return a->time() < b->time();
858 const QPoint& View::hover_point() const
863 int64_t View::get_nearest_level_change(const QPoint &p)
865 if (snap_distance_ == 0)
868 shared_ptr<Signal> signal = signal_under_mouse_cursor_;
870 vector<data::LogicSegment::EdgePair> nearest_edges;
871 int64_t nearest_sample = -1;
874 // Determine nearest edge from specific signal
876 // Calculate sample number from cursor position
877 const double samples_per_pixel = signal->base()->get_samplerate() * scale();
878 const int64_t x_offset = offset().convert_to<double>() / scale();
879 const int64_t sample_num = max(((x_offset + p.x()) * samples_per_pixel), 0.0);
881 nearest_edges = signal->get_nearest_level_changes(sample_num);
883 if (nearest_edges.size() != 2)
886 // We received absolute sample numbers, make them relative
887 const int64_t left_sample_delta = sample_num - nearest_edges.front().first;
888 const int64_t right_sample_delta = nearest_edges.back().first - sample_num - 1;
890 const int64_t left_delta = left_sample_delta / samples_per_pixel;
891 const int64_t right_delta = right_sample_delta / samples_per_pixel;
893 // Only use closest left or right edge if they're close to the cursor
894 if ((left_delta < right_delta) && (left_delta < snap_distance_))
895 nearest_sample = nearest_edges.front().first;
896 if ((left_delta >= right_delta) && (right_delta < snap_distance_))
897 nearest_sample = nearest_edges.back().first;
899 // Determine nearest edge from all signals
901 int64_t nearest_left_delta = numeric_limits<int64_t>::max();
902 int64_t nearest_right_delta = numeric_limits<int64_t>::max();
903 bool edges_found = false;
905 for (shared_ptr<Signal> s : signals_) {
909 // Calculate sample number from cursor position
910 const double samples_per_pixel = s->base()->get_samplerate() * scale();
911 const int64_t x_offset = offset().convert_to<double>() / scale();
912 const int64_t sample_num = max(((x_offset + p.x()) * samples_per_pixel), 0.0);
914 vector<data::LogicSegment::EdgePair> edges =
915 s->get_nearest_level_changes(sample_num);
917 if (edges.size() != 2)
922 // We received absolute sample numbers, make them relative
923 const int64_t left_sample_delta = sample_num - edges.front().first;
924 const int64_t right_sample_delta = edges.back().first - sample_num - 1;
926 const int64_t left_delta = left_sample_delta / samples_per_pixel;
927 const int64_t right_delta = right_sample_delta / samples_per_pixel;
929 if ((left_delta < nearest_left_delta) || (right_delta < nearest_right_delta)) {
930 nearest_edges = edges;
931 nearest_left_delta = left_delta;
932 nearest_right_delta = right_delta;
934 // Somewhat ugly hack to make TimeItem::drag_by() work
935 signal_under_mouse_cursor_ = s;
942 if ((nearest_left_delta < nearest_right_delta) &&
943 (nearest_left_delta < snap_distance_))
944 nearest_sample = nearest_edges.front().first;
946 if ((nearest_left_delta >= nearest_right_delta) &&
947 (nearest_right_delta < snap_distance_))
948 nearest_sample = nearest_edges.back().first;
951 return nearest_sample;
954 void View::restack_all_trace_tree_items()
956 // Make a list of owners that is sorted from deepest first
957 const vector<shared_ptr<TraceTreeItem>> items(
958 list_by_type<TraceTreeItem>());
959 set< TraceTreeItemOwner* > owners;
960 for (const auto &r : items)
961 owners.insert(r->owner());
962 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
963 sort(sorted_owners.begin(), sorted_owners.end(),
964 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
965 return a->depth() > b->depth(); });
967 // Restack the items recursively
968 for (auto &o : sorted_owners)
971 // Animate the items to their destination
972 for (const auto &i : items)
973 i->animate_to_layout_v_offset();
976 int View::header_width() const
978 return header_->extended_size_hint().width();
981 void View::on_setting_changed(const QString &key, const QVariant &value)
983 if (key == GlobalSettings::Key_View_TriggerIsZeroTime)
984 on_settingViewTriggerIsZeroTime_changed(value);
986 if (key == GlobalSettings::Key_View_SnapDistance) {
987 GlobalSettings settings;
988 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
992 void View::trigger_event(int segment_id, util::Timestamp location)
994 // TODO This doesn't work if we're showing multiple segments at once
995 if ((uint32_t)segment_id != current_segment_)
998 // Set zero location if the Key_View_TriggerIsZeroTime setting is set and
999 // if this is the first trigger for this segment.
1000 GlobalSettings settings;
1001 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
1003 size_t trigger_count = session_.get_triggers(current_segment_).size();
1005 if (trigger_is_zero_time && trigger_count == 1)
1006 set_zero_position(location);
1008 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
1011 void View::get_scroll_layout(double &length, Timestamp &offset) const
1013 const pair<Timestamp, Timestamp> extents = get_time_extents();
1014 length = ((extents.second - extents.first) / scale_).convert_to<double>();
1015 offset = offset_ / scale_;
1018 void View::set_zoom(double scale, int offset)
1020 // Reset the "always zoom to fit" feature as the user changed the zoom
1021 always_zoom_to_fit_ = false;
1022 always_zoom_to_fit_changed(false);
1024 const Timestamp cursor_offset = offset_ + scale_ * offset;
1025 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
1026 const Timestamp new_offset = cursor_offset - new_scale * offset;
1027 set_scale_offset(new_scale.convert_to<double>(), new_offset);
1030 void View::calculate_tick_spacing()
1032 const double SpacingIncrement = 10.0f;
1033 const double MinValueSpacing = 40.0f;
1035 // Figure out the highest numeric value visible on a label
1036 const QSize areaSize = viewport_->size();
1037 const Timestamp max_time = max(fabs(offset_),
1038 fabs(offset_ + scale_ * areaSize.width()));
1040 double min_width = SpacingIncrement;
1041 double label_width, tick_period_width;
1043 QFontMetrics m(QApplication::font());
1045 // Copies of the member variables with the same name, used in the calculation
1046 // and written back afterwards, so that we don't emit signals all the time
1047 // during the calculation.
1048 pv::util::Timestamp tick_period = tick_period_;
1049 pv::util::SIPrefix tick_prefix = tick_prefix_;
1050 unsigned tick_precision = tick_precision_;
1053 const double min_period = scale_ * min_width;
1055 const int order = (int)floorf(log10f(min_period));
1056 const pv::util::Timestamp order_decimal =
1057 pow(pv::util::Timestamp(10), order);
1059 // Allow for a margin of error so that a scale unit of 1 can be used.
1060 // Otherwise, for a SU of 1 the tick period will almost always be below
1061 // the min_period by a small amount - and thus skipped in favor of 2.
1062 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
1063 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
1064 double tp_with_margin;
1065 unsigned int unit = 0;
1068 tp_with_margin = order_decimal.convert_to<double>() *
1069 (ScaleUnits[unit++] + tp_margin);
1070 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
1072 minor_tick_count_ = (unit == 2) ? 4 : 5;
1073 tick_period = order_decimal * ScaleUnits[unit - 1];
1074 tick_prefix = static_cast<pv::util::SIPrefix>(
1075 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
1077 // Precision is the number of fractional digits required, not
1078 // taking the prefix into account (and it must never be negative)
1079 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
1081 tick_period_width = (tick_period / scale_).convert_to<double>();
1083 const QString label_text = Ruler::format_time_with_distance(
1084 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
1086 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
1087 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
1090 min_width += SpacingIncrement;
1091 } while (tick_period_width < label_width);
1093 set_tick_period(tick_period);
1094 set_tick_prefix(tick_prefix);
1095 set_tick_precision(tick_precision);
1098 void View::adjust_top_margin()
1102 const QSize areaSize = viewport_->size();
1104 const pair<int, int> extents = v_extents();
1105 const int top_margin = owner_visual_v_offset() + extents.first;
1106 const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second;
1108 // Do we have empty space at the top while the last trace goes out of screen?
1109 if ((top_margin > 0) && (trace_bottom > areaSize.height())) {
1110 const int trace_height = extents.second - extents.first;
1112 // Center everything vertically if there is enough space
1113 if (areaSize.height() >= trace_height)
1114 set_v_offset(extents.first -
1115 ((areaSize.height() - trace_height) / 2));
1117 // Remove the top margin to make as many traces fit on screen as possible
1118 set_v_offset(extents.first);
1122 void View::update_scroll()
1125 QScrollBar *hscrollbar = scrollarea_->horizontalScrollBar();
1126 QScrollBar *vscrollbar = scrollarea_->verticalScrollBar();
1128 const QSize areaSize = viewport_->size();
1130 // Set the horizontal scroll bar
1133 get_scroll_layout(length, offset);
1134 length = max(length - areaSize.width(), 0.0);
1136 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
1138 hscrollbar->setPageStep(areaSize.width() / 2);
1139 hscrollbar->setSingleStep(major_tick_distance);
1141 updating_scroll_ = true;
1143 if (length < MaxScrollValue) {
1144 hscrollbar->setRange(0, length);
1145 hscrollbar->setSliderPosition(offset.convert_to<double>());
1147 hscrollbar->setRange(0, MaxScrollValue);
1148 hscrollbar->setSliderPosition(
1149 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
1152 updating_scroll_ = false;
1154 // Set the vertical scrollbar
1155 vscrollbar->setPageStep(areaSize.height());
1156 vscrollbar->setSingleStep(areaSize.height() / 8);
1158 const pair<int, int> extents = v_extents();
1160 // Don't change the scrollbar range if there are no traces
1161 if (extents.first != extents.second)
1162 vscrollbar->setRange(extents.first - areaSize.height(),
1165 if (scroll_needs_defaults_) {
1166 set_scroll_default();
1167 scroll_needs_defaults_ = false;
1171 void View::reset_scroll()
1173 scrollarea_->verticalScrollBar()->setRange(0, 0);
1176 void View::set_scroll_default()
1180 const QSize areaSize = viewport_->size();
1182 const pair<int, int> extents = v_extents();
1183 const int trace_height = extents.second - extents.first;
1185 // Do all traces fit in the view?
1186 if (areaSize.height() >= trace_height)
1187 // Center all traces vertically
1188 set_v_offset(extents.first -
1189 ((areaSize.height() - trace_height) / 2));
1191 // Put the first trace at the top, letting the bottom ones overflow
1192 set_v_offset(extents.first);
1195 void View::determine_if_header_was_shrunk()
1197 const int header_pane_width = splitter_->sizes().front();
1199 // Allow for a slight margin of error so that we also accept
1200 // slight differences when e.g. a label name change increased
1201 // the overall width
1202 header_was_shrunk_ = (header_pane_width < (header_width() - 10));
1205 void View::resize_header_to_fit()
1207 // Setting the maximum width of the header widget doesn't work as
1208 // expected because the splitter would allow the user to make the
1209 // pane wider than that, creating empty space as a result.
1210 // To make this work, we stricly enforce the maximum width by
1211 // expanding the header unless the user shrunk it on purpose.
1212 // As we're then setting the width of the header pane, we set the
1213 // splitter to the maximum allowed position.
1215 int splitter_area_width = 0;
1216 for (int w : splitter_->sizes())
1217 splitter_area_width += w;
1219 // Make sure the header has enough horizontal space to show all labels fully
1220 QList<int> pane_sizes;
1221 pane_sizes.push_back(header_->extended_size_hint().width());
1222 pane_sizes.push_back(splitter_area_width - header_->extended_size_hint().width());
1223 splitter_->setSizes(pane_sizes);
1226 void View::update_layout()
1231 TraceTreeItemOwner* View::find_prevalent_trace_group(
1232 const shared_ptr<sigrok::ChannelGroup> &group,
1233 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1238 unordered_set<TraceTreeItemOwner*> owners;
1239 vector<TraceTreeItemOwner*> owner_list;
1241 // Make a set and a list of all the owners
1242 for (const auto &channel : group->channels()) {
1243 for (auto entry : signal_map) {
1244 if (entry.first->channel() == channel) {
1245 TraceTreeItemOwner *const o = (entry.second)->owner();
1246 owner_list.push_back(o);
1252 // Iterate through the list of owners, and find the most prevalent
1253 size_t max_prevalence = 0;
1254 TraceTreeItemOwner *prevalent_owner = nullptr;
1255 for (TraceTreeItemOwner *owner : owners) {
1256 const size_t prevalence = count_if(
1257 owner_list.begin(), owner_list.end(),
1258 [&](TraceTreeItemOwner *o) { return o == owner; });
1259 if (prevalence > max_prevalence) {
1260 max_prevalence = prevalence;
1261 prevalent_owner = owner;
1265 return prevalent_owner;
1268 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
1269 const vector< shared_ptr<sigrok::Channel> > &channels,
1270 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1272 set< shared_ptr<Trace> > &add_list)
1274 vector< shared_ptr<Trace> > filtered_traces;
1276 for (const auto &channel : channels) {
1277 for (auto entry : signal_map) {
1278 if (entry.first->channel() == channel) {
1279 shared_ptr<Trace> trace = entry.second;
1280 const auto list_iter = add_list.find(trace);
1281 if (list_iter == add_list.end())
1284 filtered_traces.push_back(trace);
1285 add_list.erase(list_iter);
1290 return filtered_traces;
1293 void View::determine_time_unit()
1295 // Check whether we know the sample rate and hence can use time as the unit
1296 if (time_unit_ == util::TimeUnit::Samples) {
1297 // Check all signals but...
1298 for (const shared_ptr<Signal> signal : signals_) {
1299 const shared_ptr<SignalData> data = signal->data();
1301 // ...only check first segment of each
1302 const vector< shared_ptr<Segment> > segments = data->segments();
1303 if (!segments.empty())
1304 if (segments[0]->samplerate()) {
1305 set_time_unit(util::TimeUnit::Time);
1312 bool View::eventFilter(QObject *object, QEvent *event)
1314 const QEvent::Type type = event->type();
1315 if (type == QEvent::MouseMove) {
1317 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1318 if (object == viewport_)
1319 hover_point_ = mouse_event->pos();
1320 else if (object == ruler_)
1321 // Adjust the hover point's y coordinate so that it's relative to
1322 // the top of the viewport. The result may be negative.
1323 hover_point_ = QPoint(mouse_event->pos().x(),
1324 mouse_event->pos().y() - ruler_->sizeHint().height());
1325 else if (object == header_)
1326 hover_point_ = QPoint(0, mouse_event->y());
1328 hover_point_ = QPoint(-1, -1);
1330 update_hover_point();
1332 } else if (type == QEvent::Leave) {
1333 hover_point_ = QPoint(-1, -1);
1334 update_hover_point();
1335 } else if (type == QEvent::Show) {
1337 // This is somewhat of a hack, unfortunately. We cannot use
1338 // set_v_offset() from within restore_settings() as the view
1339 // at that point is neither visible nor properly sized.
1340 // This is the least intrusive workaround I could come up
1341 // with: set the vertical offset (or scroll defaults) when
1342 // the view is shown, which happens after all widgets were
1343 // resized to their final sizes.
1346 if (settings_restored_)
1347 determine_if_header_was_shrunk();
1349 resize_header_to_fit();
1351 if (scroll_needs_defaults_) {
1352 set_scroll_default();
1353 scroll_needs_defaults_ = false;
1356 if (saved_v_offset_) {
1357 set_v_offset(saved_v_offset_);
1358 saved_v_offset_ = 0;
1362 return QObject::eventFilter(object, event);
1365 void View::contextMenuEvent(QContextMenuEvent *event)
1367 QPoint pos = event->pos() - QPoint(0, ruler_->sizeHint().height());
1369 const shared_ptr<ViewItem> r = viewport_->get_mouse_over_item(pos);
1373 QMenu *menu = r->create_view_context_menu(this, pos);
1375 menu->exec(event->globalPos());
1378 void View::resizeEvent(QResizeEvent* event)
1380 // Only adjust the top margin if we shrunk vertically
1381 if (event->size().height() < event->oldSize().height())
1382 adjust_top_margin();
1387 void View::update_hover_point()
1389 // Determine signal that the mouse cursor is hovering over
1390 signal_under_mouse_cursor_.reset();
1391 for (shared_ptr<Signal> s : signals_) {
1392 const pair<int, int> extents = s->v_extents();
1393 const int top = s->get_visual_y() + extents.first;
1394 const int btm = s->get_visual_y() + extents.second;
1395 if ((hover_point_.y() >= top) && (hover_point_.y() <= btm)
1396 && s->base()->enabled())
1397 signal_under_mouse_cursor_ = s;
1400 // Update all trace tree items
1401 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1402 list_by_type<TraceTreeItem>());
1403 for (shared_ptr<TraceTreeItem> r : trace_tree_items)
1404 r->hover_point_changed(hover_point_);
1406 // Notify any other listeners
1407 hover_point_changed(hover_point_);
1410 void View::row_item_appearance_changed(bool label, bool content)
1415 viewport_->update();
1418 void View::time_item_appearance_changed(bool label, bool content)
1423 // Make sure the header pane width is updated, too
1428 viewport_->update();
1431 void View::extents_changed(bool horz, bool vert)
1434 (horz ? TraceTreeItemHExtentsChanged : 0) |
1435 (vert ? TraceTreeItemVExtentsChanged : 0);
1437 lazy_event_handler_.stop();
1438 lazy_event_handler_.start();
1441 void View::on_signal_name_changed()
1443 if (!header_was_shrunk_)
1444 resize_header_to_fit();
1447 void View::on_splitter_moved()
1449 // The header can only shrink when the splitter is moved manually
1450 determine_if_header_was_shrunk();
1452 if (!header_was_shrunk_)
1453 resize_header_to_fit();
1456 void View::h_scroll_value_changed(int value)
1458 if (updating_scroll_)
1461 // Disable sticky scrolling when user moves the horizontal scroll bar
1462 // during a running acquisition
1463 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1464 sticky_scrolling_ = false;
1465 sticky_scrolling_changed(false);
1468 const int range = scrollarea_->horizontalScrollBar()->maximum();
1469 if (range < MaxScrollValue)
1470 set_offset(scale_ * value);
1474 get_scroll_layout(length, offset);
1475 set_offset(scale_ * length * value / MaxScrollValue);
1479 viewport_->update();
1482 void View::v_scroll_value_changed()
1485 viewport_->update();
1488 void View::signals_changed()
1490 using sigrok::Channel;
1492 vector< shared_ptr<Channel> > channels;
1493 shared_ptr<sigrok::Device> sr_dev;
1494 bool signals_added_or_removed = false;
1496 // Do we need to set the vertical scrollbar to its default position later?
1497 // We do if there are no traces, i.e. the scroll bar has no range set
1498 bool reset_scrollbar =
1499 (scrollarea_->verticalScrollBar()->minimum() ==
1500 scrollarea_->verticalScrollBar()->maximum());
1502 if (!session_.device()) {
1506 sr_dev = session_.device()->device();
1508 channels = sr_dev->channels();
1511 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1513 // Make a list of traces that are being added, and a list of traces
1514 // that are being removed
1515 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1516 const set<shared_ptr<Trace>> prev_traces(
1517 prev_trace_list.begin(), prev_trace_list.end());
1519 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1521 #ifdef ENABLE_DECODE
1522 traces.insert(decode_traces_.begin(), decode_traces_.end());
1525 set< shared_ptr<Trace> > add_traces;
1526 set_difference(traces.begin(), traces.end(),
1527 prev_traces.begin(), prev_traces.end(),
1528 inserter(add_traces, add_traces.begin()));
1530 set< shared_ptr<Trace> > remove_traces;
1531 set_difference(prev_traces.begin(), prev_traces.end(),
1532 traces.begin(), traces.end(),
1533 inserter(remove_traces, remove_traces.begin()));
1535 // Make a look-up table of sigrok Channels to pulseview Signals
1536 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1538 for (const shared_ptr<Signal> &sig : signals_)
1539 signal_map[sig->base()] = sig;
1541 // Populate channel groups
1543 for (auto entry : sr_dev->channel_groups()) {
1544 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1546 if (group->channels().size() <= 1)
1549 // Find best trace group to add to
1550 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1553 // If there is no trace group, create one
1554 shared_ptr<TraceGroup> new_trace_group;
1556 new_trace_group.reset(new TraceGroup());
1557 owner = new_trace_group.get();
1560 // Extract traces for the trace group, removing them from
1562 const vector< shared_ptr<Trace> > new_traces_in_group =
1563 extract_new_traces_for_channels(group->channels(),
1564 signal_map, add_traces);
1566 // Add the traces to the group
1567 const pair<int, int> prev_v_extents = owner->v_extents();
1568 int offset = prev_v_extents.second - prev_v_extents.first;
1569 for (shared_ptr<Trace> trace : new_traces_in_group) {
1571 owner->add_child_item(trace);
1573 const pair<int, int> extents = trace->v_extents();
1574 if (trace->enabled())
1575 offset += -extents.first;
1576 trace->force_to_v_offset(offset);
1577 if (trace->enabled())
1578 offset += extents.second;
1581 if (new_trace_group) {
1582 // Assign proper vertical offsets to each channel in the group
1583 new_trace_group->restack_items();
1585 // If this is a new group, enqueue it in the new top level
1587 if (!new_traces_in_group.empty())
1588 new_top_level_items.push_back(new_trace_group);
1592 // Enqueue the remaining logic channels in a group
1593 vector< shared_ptr<Channel> > logic_channels;
1594 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1595 [](const shared_ptr<Channel>& c) {
1596 return c->type() == sigrok::ChannelType::LOGIC; });
1598 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1599 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1601 if (non_grouped_logic_signals.size() > 0) {
1602 const shared_ptr<TraceGroup> non_grouped_trace_group(
1603 make_shared<TraceGroup>());
1604 for (shared_ptr<Trace> trace : non_grouped_logic_signals)
1605 non_grouped_trace_group->add_child_item(trace);
1607 non_grouped_trace_group->restack_items();
1608 new_top_level_items.push_back(non_grouped_trace_group);
1611 // Enqueue the remaining channels as free ungrouped traces
1612 const vector< shared_ptr<Trace> > new_top_level_signals =
1613 extract_new_traces_for_channels(channels, signal_map, add_traces);
1614 new_top_level_items.insert(new_top_level_items.end(),
1615 new_top_level_signals.begin(), new_top_level_signals.end());
1617 // Enqueue any remaining traces i.e. decode traces
1618 new_top_level_items.insert(new_top_level_items.end(),
1619 add_traces.begin(), add_traces.end());
1621 // Remove any removed traces
1622 for (shared_ptr<Trace> trace : remove_traces) {
1623 TraceTreeItemOwner *const owner = trace->owner();
1625 owner->remove_child_item(trace);
1626 signals_added_or_removed = true;
1629 // Remove any empty trace groups
1630 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1631 if (group->child_items().size() == 0) {
1632 remove_child_item(group);
1636 // Add and position the pending top levels items
1637 int offset = v_extents().second;
1638 for (auto item : new_top_level_items) {
1639 add_child_item(item);
1641 // Position the item after the last item or at the top if there is none
1642 const pair<int, int> extents = item->v_extents();
1644 if (item->enabled())
1645 offset += -extents.first;
1647 item->force_to_v_offset(offset);
1649 if (item->enabled())
1650 offset += extents.second;
1651 signals_added_or_removed = true;
1655 if (signals_added_or_removed && !header_was_shrunk_)
1656 resize_header_to_fit();
1661 viewport_->update();
1663 if (reset_scrollbar)
1664 set_scroll_default();
1667 void View::capture_state_updated(int state)
1669 GlobalSettings settings;
1671 if (state == Session::Running) {
1672 set_time_unit(util::TimeUnit::Samples);
1674 trigger_markers_.clear();
1676 scale_at_acq_start_ = scale_;
1677 offset_at_acq_start_ = offset_;
1679 // Activate "always zoom to fit" if the setting is enabled and we're
1680 // the main view of this session (other trace views may be used for
1681 // zooming and we don't want to mess them up)
1682 bool state = settings.value(GlobalSettings::Key_View_ZoomToFitDuringAcq).toBool();
1683 if (is_main_view_ && state) {
1684 always_zoom_to_fit_ = true;
1685 always_zoom_to_fit_changed(always_zoom_to_fit_);
1688 // Enable sticky scrolling if the setting is enabled
1689 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
1691 // Reset all traces to segment 0
1692 current_segment_ = 0;
1693 set_current_segment(current_segment_);
1696 if (state == Session::Stopped) {
1697 // After acquisition has stopped we need to re-calculate the ticks once
1698 // as it's otherwise done when the user pans or zooms, which is too late
1699 calculate_tick_spacing();
1701 // Reset "always zoom to fit", the acquisition has stopped
1702 if (always_zoom_to_fit_) {
1703 // Perform a final zoom-to-fit before disabling
1704 zoom_fit(always_zoom_to_fit_);
1705 always_zoom_to_fit_ = false;
1706 always_zoom_to_fit_changed(always_zoom_to_fit_);
1709 bool zoom_to_fit_after_acq =
1710 settings.value(GlobalSettings::Key_View_ZoomToFitAfterAcq).toBool();
1712 // Only perform zoom-to-fit if the user hasn't altered the viewport and
1713 // we didn't restore settings in the meanwhile
1714 if (zoom_to_fit_after_acq &&
1715 !suppress_zoom_to_fit_after_acq_ &&
1716 (scale_ == scale_at_acq_start_) &&
1717 (offset_ == offset_at_acq_start_))
1718 zoom_fit(false); // We're stopped, so the GUI state doesn't matter
1720 suppress_zoom_to_fit_after_acq_ = false;
1724 void View::on_new_segment(int new_segment_id)
1726 on_segment_changed(new_segment_id);
1729 void View::on_segment_completed(int segment_id)
1731 on_segment_changed(segment_id);
1734 void View::on_segment_changed(int segment)
1736 switch (segment_display_mode_) {
1737 case Trace::ShowLastSegmentOnly:
1738 case Trace::ShowSingleSegmentOnly:
1739 set_current_segment(segment);
1742 case Trace::ShowLastCompleteSegmentOnly:
1743 // Only update if all segments are complete
1744 if (session_.all_segments_complete(segment))
1745 set_current_segment(segment);
1748 case Trace::ShowAllSegments:
1749 case Trace::ShowAccumulatedIntensity:
1755 void View::on_settingViewTriggerIsZeroTime_changed(const QVariant new_value)
1757 if (new_value.toBool()) {
1758 // The first trigger for this segment is used as the zero position
1759 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
1760 if (triggers.size() > 0)
1761 set_zero_position(triggers.front());
1763 reset_zero_position();
1766 void View::perform_delayed_view_update()
1768 if (always_zoom_to_fit_) {
1770 } else if (sticky_scrolling_) {
1771 // Make right side of the view sticky
1774 get_scroll_layout(length, offset);
1776 const QSize areaSize = viewport_->size();
1777 length = max(length - areaSize.width(), 0.0);
1779 set_offset(scale_ * length);
1782 determine_time_unit();
1785 viewport_->update();
1788 void View::process_sticky_events()
1790 if (sticky_events_ & TraceTreeItemHExtentsChanged)
1792 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
1793 restack_all_trace_tree_items();
1797 // Clear the sticky events
1801 } // namespace trace
1802 } // namespace views