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, QMainWindow *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()
134 scroll_needs_defaults_(true)
136 QVBoxLayout *root_layout = new QVBoxLayout(this);
137 root_layout->setContentsMargins(0, 0, 0, 0);
138 root_layout->addWidget(splitter_);
140 viewport_ = new Viewport(*this);
141 scrollarea_ = new CustomScrollArea(splitter_);
142 scrollarea_->setViewport(viewport_);
143 scrollarea_->setFrameShape(QFrame::NoFrame);
145 ruler_ = new Ruler(*this);
147 header_ = new Header(*this);
148 header_->setMinimumWidth(10); // So that the arrow tips show at least
150 // We put the header into a simple layout so that we can add the top margin,
151 // allowing us to make it line up with the bottom of the ruler
152 QWidget *header_container = new QWidget();
153 header_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
154 QVBoxLayout *header_layout = new QVBoxLayout(header_container);
155 header_layout->setContentsMargins(0, ruler_->sizeHint().height(), 0, 0);
156 header_layout->addWidget(header_);
158 // To let the ruler and scrollarea be on the same split pane, we need a layout
159 QWidget *trace_container = new QWidget();
160 trace_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
161 QVBoxLayout *trace_layout = new QVBoxLayout(trace_container);
162 trace_layout->setSpacing(0); // We don't want space between the ruler and scrollarea
163 trace_layout->setContentsMargins(0, 0, 0, 0);
164 trace_layout->addWidget(ruler_);
165 trace_layout->addWidget(scrollarea_);
167 splitter_->addWidget(header_container);
168 splitter_->addWidget(trace_container);
169 splitter_->setHandleWidth(1); // Don't show a visible rubber band
170 splitter_->setCollapsible(0, false); // Prevent the header from collapsing
171 splitter_->setCollapsible(1, false); // Prevent the traces from collapsing
172 splitter_->setStretchFactor(0, 0); // Prevent the panes from being resized
173 splitter_->setStretchFactor(1, 1); // when the entire view is resized
174 splitter_->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
176 viewport_->installEventFilter(this);
177 ruler_->installEventFilter(this);
178 header_->installEventFilter(this);
180 // Set up settings and event handlers
181 GlobalSettings settings;
182 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
183 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
185 GlobalSettings::add_change_handler(this);
187 connect(scrollarea_->horizontalScrollBar(), SIGNAL(valueChanged(int)),
188 this, SLOT(h_scroll_value_changed(int)));
189 connect(scrollarea_->verticalScrollBar(), SIGNAL(valueChanged(int)),
190 this, SLOT(v_scroll_value_changed()));
192 connect(header_, SIGNAL(selection_changed()),
193 ruler_, SLOT(clear_selection()));
194 connect(ruler_, SIGNAL(selection_changed()),
195 header_, SLOT(clear_selection()));
197 connect(header_, SIGNAL(selection_changed()),
198 this, SIGNAL(selection_changed()));
199 connect(ruler_, SIGNAL(selection_changed()),
200 this, SIGNAL(selection_changed()));
202 connect(splitter_, SIGNAL(splitterMoved(int, int)),
203 this, SLOT(on_splitter_moved()));
205 connect(&lazy_event_handler_, SIGNAL(timeout()),
206 this, SLOT(process_sticky_events()));
207 lazy_event_handler_.setSingleShot(true);
209 // Set up local keyboard shortcuts
210 zoom_in_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Plus), this,
211 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
212 zoom_in_shortcut_->setAutoRepeat(false);
214 zoom_out_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Minus), this,
215 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
216 zoom_out_shortcut_->setAutoRepeat(false);
218 zoom_in_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Up), this,
219 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
220 zoom_out_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Down), this,
221 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
223 home_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Home), this,
224 SLOT(on_scroll_to_start_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
225 home_shortcut_->setAutoRepeat(false);
227 end_shortcut_ = new QShortcut(QKeySequence(Qt::Key_End), this,
228 SLOT(on_scroll_to_end_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
229 end_shortcut_->setAutoRepeat(false);
231 // Trigger the initial event manually. The default device has signals
232 // which were created before this object came into being
235 // Make sure the transparent widgets are on the top
244 GlobalSettings::remove_change_handler(this);
247 ViewType View::get_type() const
249 return ViewTypeTrace;
252 void View::reset_view_state()
254 ViewBase::reset_view_state();
256 segment_display_mode_ = Trace::ShowLastSegmentOnly;
257 segment_selectable_ = false;
261 updating_scroll_ = false;
262 settings_restored_ = false;
263 always_zoom_to_fit_ = false;
265 tick_prefix_ = pv::util::SIPrefix::yocto;
267 time_unit_ = util::TimeUnit::Time;
268 show_cursors_ = false;
269 cursors_ = make_shared<CursorPair>(*this);
270 next_flag_text_ = 'A';
271 trigger_markers_.clear();
272 hover_widget_ = nullptr;
273 hover_point_ = QPoint(-1, -1);
274 scroll_needs_defaults_ = true;
276 scale_at_acq_start_ = 0;
277 offset_at_acq_start_ = 0;
278 suppress_zoom_to_fit_after_acq_ = false;
280 show_cursors_ = false;
281 cursor_state_changed(show_cursors_);
284 // Update the zoom state
285 calculate_tick_spacing();
287 // Make sure the standard bar's segment selector is in sync
288 set_segment_display_mode(segment_display_mode_);
291 Session& View::session()
296 const Session& View::session() const
301 unordered_set< shared_ptr<Signal> > View::signals() const
306 shared_ptr<Signal> View::get_signal_by_signalbase(shared_ptr<data::SignalBase> base) const
308 shared_ptr<Signal> ret_val;
310 for (const shared_ptr<Signal> s : signals_)
311 if (s->base() == base) {
319 void View::clear_signals()
321 ViewBase::clear_signals();
325 void View::add_signal(const shared_ptr<Signal> signal)
327 ViewBase::add_signalbase(signal->base());
328 signals_.insert(signal);
330 signal->set_segment_display_mode(segment_display_mode_);
331 signal->set_current_segment(current_segment_);
333 connect(signal->base().get(), SIGNAL(name_changed(const QString&)),
334 this, SLOT(on_signal_name_changed()));
338 void View::clear_decode_signals()
340 ViewBase::clear_decode_signals();
341 decode_traces_.clear();
344 void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
346 ViewBase::add_decode_signal(signal);
348 shared_ptr<DecodeTrace> d(
349 new DecodeTrace(session_, signal, decode_traces_.size()));
350 decode_traces_.push_back(d);
352 d->set_segment_display_mode(segment_display_mode_);
353 d->set_current_segment(current_segment_);
355 connect(signal.get(), SIGNAL(name_changed(const QString&)),
356 this, SLOT(on_signal_name_changed()));
359 void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
361 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
362 if ((*i)->base() == signal) {
363 decode_traces_.erase(i);
368 ViewBase::remove_decode_signal(signal);
372 shared_ptr<Signal> View::get_signal_under_mouse_cursor() const
374 return signal_under_mouse_cursor_;
382 const View* View::view() const
387 Viewport* View::viewport()
392 const Viewport* View::viewport() const
397 const Ruler* View::ruler() const
402 void View::save_settings(QSettings &settings) const
404 settings.setValue("scale", scale_);
405 settings.setValue("v_offset",
406 scrollarea_->verticalScrollBar()->sliderPosition());
408 settings.setValue("splitter_state", splitter_->saveState());
409 settings.setValue("segment_display_mode", segment_display_mode_);
413 boost::archive::text_oarchive oa(ss);
414 oa << boost::serialization::make_nvp("offset", offset_);
415 settings.setValue("offset", QString::fromStdString(ss.str()));
418 for (const shared_ptr<Signal>& signal : signals_) {
419 settings.beginGroup(signal->base()->internal_name());
420 signal->save_settings(settings);
425 void View::restore_settings(QSettings &settings)
427 // Note: It is assumed that this function is only called once,
428 // immediately after restoring a previous session.
430 if (settings.contains("scale"))
431 set_scale(settings.value("scale").toDouble());
433 if (settings.contains("offset")) {
434 util::Timestamp offset;
436 ss << settings.value("offset").toString().toStdString();
439 boost::archive::text_iarchive ia(ss);
440 ia >> boost::serialization::make_nvp("offset", offset);
441 // This also updates ruler_offset_
443 } catch (boost::archive::archive_exception&) {
444 qDebug() << "Could not restore the view offset";
448 if (settings.contains("splitter_state"))
449 splitter_->restoreState(settings.value("splitter_state").toByteArray());
451 if (settings.contains("segment_display_mode"))
452 set_segment_display_mode(
453 (Trace::SegmentDisplayMode)(settings.value("segment_display_mode").toInt()));
455 for (shared_ptr<Signal> signal : signals_) {
456 settings.beginGroup(signal->base()->internal_name());
457 signal->restore_settings(settings);
461 if (settings.contains("v_offset")) {
462 saved_v_offset_ = settings.value("v_offset").toInt();
463 set_v_offset(saved_v_offset_);
464 scroll_needs_defaults_ = false;
465 // Note: see eventFilter() for additional information
468 settings_restored_ = true;
469 suppress_zoom_to_fit_after_acq_ = true;
471 // Update the ruler so that it uses the new scale
472 calculate_tick_spacing();
475 vector< shared_ptr<TimeItem> > View::time_items() const
477 const vector<shared_ptr<Flag>> f(flags());
478 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
481 items.push_back(cursors_);
482 items.push_back(cursors_->first());
483 items.push_back(cursors_->second());
486 for (auto& trigger_marker : trigger_markers_)
487 items.push_back(trigger_marker);
492 double View::scale() const
497 void View::set_scale(double scale)
499 if (scale_ != scale) {
505 void View::set_offset(const pv::util::Timestamp& offset, bool force_update)
507 if ((offset_ != offset) || force_update) {
509 ruler_offset_ = offset_ + zero_offset_;
514 const Timestamp& View::offset() const
519 const Timestamp& View::ruler_offset() const
521 return ruler_offset_;
524 void View::set_zero_position(const pv::util::Timestamp& position)
526 zero_offset_ = -position;
528 // Force an immediate update of the offsets
529 set_offset(offset_, true);
533 void View::reset_zero_position()
537 // Force an immediate update of the offsets
538 set_offset(offset_, true);
542 pv::util::Timestamp View::zero_offset() const
547 int View::owner_visual_v_offset() const
549 return -scrollarea_->verticalScrollBar()->sliderPosition();
552 void View::set_v_offset(int offset)
554 scrollarea_->verticalScrollBar()->setSliderPosition(offset);
559 void View::set_h_offset(int offset)
561 scrollarea_->horizontalScrollBar()->setSliderPosition(offset);
566 int View::get_h_scrollbar_maximum() const
568 return scrollarea_->horizontalScrollBar()->maximum();
571 unsigned int View::depth() const
576 uint32_t View::current_segment() const
578 return current_segment_;
581 pv::util::SIPrefix View::tick_prefix() const
586 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
588 if (tick_prefix_ != tick_prefix) {
589 tick_prefix_ = tick_prefix;
590 tick_prefix_changed();
594 unsigned int View::tick_precision() const
596 return tick_precision_;
599 void View::set_tick_precision(unsigned tick_precision)
601 if (tick_precision_ != tick_precision) {
602 tick_precision_ = tick_precision;
603 tick_precision_changed();
607 const pv::util::Timestamp& View::tick_period() const
612 unsigned int View::minor_tick_count() const
614 return minor_tick_count_;
617 void View::set_tick_period(const pv::util::Timestamp& tick_period)
619 if (tick_period_ != tick_period) {
620 tick_period_ = tick_period;
621 tick_period_changed();
625 TimeUnit View::time_unit() const
630 void View::set_time_unit(pv::util::TimeUnit time_unit)
632 if (time_unit_ != time_unit) {
633 time_unit_ = time_unit;
638 void View::set_current_segment(uint32_t segment_id)
640 current_segment_ = segment_id;
642 for (const shared_ptr<Signal>& signal : signals_)
643 signal->set_current_segment(current_segment_);
645 for (shared_ptr<DecodeTrace>& dt : decode_traces_)
646 dt->set_current_segment(current_segment_);
649 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
651 trigger_markers_.clear();
652 for (util::Timestamp timestamp : triggers)
653 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, timestamp));
655 // When enabled, the first trigger for this segment is used as the zero position
656 GlobalSettings settings;
657 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
659 if (trigger_is_zero_time && (triggers.size() > 0))
660 set_zero_position(triggers.front());
664 segment_changed(segment_id);
667 bool View::segment_is_selectable() const
669 return segment_selectable_;
672 Trace::SegmentDisplayMode View::segment_display_mode() const
674 return segment_display_mode_;
677 void View::set_segment_display_mode(Trace::SegmentDisplayMode mode)
679 segment_display_mode_ = mode;
681 for (const shared_ptr<Signal>& signal : signals_)
682 signal->set_segment_display_mode(mode);
684 uint32_t last_segment = session_.get_segment_count() - 1;
687 case Trace::ShowLastSegmentOnly:
688 if (current_segment_ != last_segment)
689 set_current_segment(last_segment);
692 case Trace::ShowLastCompleteSegmentOnly:
693 // Do nothing if we only have one segment so far
694 if (last_segment > 0) {
695 // If the last segment isn't complete, the previous one must be
696 uint32_t segment_id =
697 (session_.all_segments_complete(last_segment)) ?
698 last_segment : last_segment - 1;
700 if (current_segment_ != segment_id)
701 set_current_segment(segment_id);
705 case Trace::ShowSingleSegmentOnly:
706 case Trace::ShowAllSegments:
707 case Trace::ShowAccumulatedIntensity:
709 // Current segment remains as-is
713 segment_selectable_ = true;
715 if ((mode == Trace::ShowAllSegments) || (mode == Trace::ShowAccumulatedIntensity))
716 segment_selectable_ = false;
720 segment_display_mode_changed((int)mode, segment_selectable_);
723 void View::zoom(double steps)
725 zoom(steps, viewport_->width() / 2);
728 void View::zoom(double steps, int offset)
730 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
733 void View::zoom_fit(bool gui_state)
735 // Act as one-shot when stopped, toggle along with the GUI otherwise
736 if (session_.get_capture_state() == Session::Stopped) {
737 always_zoom_to_fit_ = false;
738 always_zoom_to_fit_changed(false);
740 always_zoom_to_fit_ = gui_state;
741 always_zoom_to_fit_changed(gui_state);
744 const pair<Timestamp, Timestamp> extents = get_time_extents();
745 const Timestamp delta = extents.second - extents.first;
746 if (delta < Timestamp("1e-12"))
750 const int w = viewport_->width();
754 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
755 set_scale_offset(scale.convert_to<double>(), extents.first);
758 void View::set_scale_offset(double scale, const Timestamp& offset)
760 // Disable sticky scrolling / always zoom to fit when acquisition runs
761 // and user drags the viewport
762 if ((scale_ == scale) && (offset_ != offset) &&
763 (session_.get_capture_state() == Session::Running)) {
765 if (sticky_scrolling_) {
766 sticky_scrolling_ = false;
767 sticky_scrolling_changed(false);
770 if (always_zoom_to_fit_) {
771 always_zoom_to_fit_ = false;
772 always_zoom_to_fit_changed(false);
779 calculate_tick_spacing();
786 set< shared_ptr<SignalData> > View::get_visible_data() const
788 // Make a set of all the visible data objects
789 set< shared_ptr<SignalData> > visible_data;
790 for (const shared_ptr<Signal>& sig : signals_)
792 visible_data.insert(sig->data());
797 pair<Timestamp, Timestamp> View::get_time_extents() const
799 boost::optional<Timestamp> left_time, right_time;
800 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
801 for (const shared_ptr<SignalData>& d : visible_data) {
802 const vector< shared_ptr<Segment> > segments = d->segments();
803 for (const shared_ptr<Segment>& s : segments) {
804 double samplerate = s->samplerate();
805 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
807 const Timestamp start_time = s->start_time();
808 left_time = left_time ?
809 min(*left_time, start_time) :
811 right_time = right_time ?
812 max(*right_time, start_time + d->max_sample_count() / samplerate) :
813 start_time + d->max_sample_count() / samplerate;
817 if (!left_time || !right_time)
818 return make_pair(0, 0);
820 assert(*left_time < *right_time);
821 return make_pair(*left_time, *right_time);
824 bool View::colored_bg() const
829 bool View::cursors_shown() const
831 return show_cursors_;
834 void View::show_cursors(bool show)
836 if (show_cursors_ != show) {
837 show_cursors_ = show;
839 cursor_state_changed(show);
845 void View::set_cursors(pv::util::Timestamp& first, pv::util::Timestamp& second)
849 cursors_->first()->set_time(first);
850 cursors_->second()->set_time(second);
856 void View::centre_cursors()
860 const double time_width = scale_ * viewport_->width();
861 cursors_->first()->set_time(offset_ + time_width * 0.4);
862 cursors_->second()->set_time(offset_ + time_width * 0.6);
868 shared_ptr<CursorPair> View::cursors() const
873 shared_ptr<Flag> View::add_flag(const Timestamp& time)
875 shared_ptr<Flag> flag =
876 make_shared<Flag>(*this, time, QString("%1").arg(next_flag_text_));
877 flags_.push_back(flag);
879 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
880 (next_flag_text_ + 1);
882 time_item_appearance_changed(true, true);
886 void View::remove_flag(shared_ptr<Flag> flag)
889 time_item_appearance_changed(true, true);
892 vector< shared_ptr<Flag> > View::flags() const
894 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
895 stable_sort(flags.begin(), flags.end(),
896 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
897 return a->time() < b->time();
903 const QPoint& View::hover_point() const
908 const QWidget* View::hover_widget() const
910 return hover_widget_;
913 int64_t View::get_nearest_level_change(const QPoint &p)
915 // Is snapping disabled?
916 if (snap_distance_ == 0)
920 entry_t(shared_ptr<Signal> s) :
921 signal(s), delta(numeric_limits<int64_t>::max()), sample(-1), is_dense(false) {}
922 shared_ptr<Signal> signal;
928 vector<entry_t> list;
930 // Create list of signals to consider
931 if (signal_under_mouse_cursor_)
932 list.emplace_back(signal_under_mouse_cursor_);
934 for (shared_ptr<Signal> s : signals_) {
938 list.emplace_back(s);
941 // Get data for listed signals
942 for (entry_t &e : list) {
943 // Calculate sample number from cursor position
944 const double samples_per_pixel = e.signal->base()->get_samplerate() * scale();
945 const int64_t x_offset = offset().convert_to<double>() / scale();
946 const int64_t sample_num = max(((x_offset + p.x()) * samples_per_pixel), 0.0);
948 vector<data::LogicSegment::EdgePair> edges =
949 e.signal->get_nearest_level_changes(sample_num);
955 const int64_t first_sample_delta = abs(sample_num - edges.front().first);
956 const int64_t first_delta = first_sample_delta / samples_per_pixel;
957 e.delta = first_delta;
958 e.sample = edges.front().first;
960 // Check second edge if available
961 if (edges.size() == 2) {
962 // Note: -1 because this is usually the right edge and sample points are left-aligned
963 const int64_t second_sample_delta = abs(sample_num - edges.back().first - 1);
964 const int64_t second_delta = second_sample_delta / samples_per_pixel;
966 // If both edges are too close, we mark this signal as being dense
967 if ((first_delta + second_delta) <= snap_distance_)
970 if (second_delta < first_delta) {
971 e.delta = second_delta;
972 e.sample = edges.back().first;
977 // Look for the best match: non-dense first, then dense
978 entry_t *match = nullptr;
980 for (entry_t &e : list) {
981 if (e.delta > snap_distance_ || e.is_dense)
985 if (e.delta < match->delta)
992 for (entry_t &e : list) {
997 if (e.delta < match->delta)
1005 // Somewhat ugly hack to make TimeItem::drag_by() work
1006 signal_under_mouse_cursor_ = match->signal;
1008 return match->sample;
1014 void View::restack_all_trace_tree_items()
1016 // Make a list of owners that is sorted from deepest first
1017 const vector<shared_ptr<TraceTreeItem>> items(
1018 list_by_type<TraceTreeItem>());
1019 set< TraceTreeItemOwner* > owners;
1020 for (const auto &r : items)
1021 owners.insert(r->owner());
1022 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
1023 sort(sorted_owners.begin(), sorted_owners.end(),
1024 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
1025 return a->depth() > b->depth(); });
1027 // Restack the items recursively
1028 for (auto &o : sorted_owners)
1031 // Animate the items to their destination
1032 for (const auto &i : items)
1033 i->animate_to_layout_v_offset();
1036 int View::header_width() const
1038 return header_->extended_size_hint().width();
1041 void View::on_setting_changed(const QString &key, const QVariant &value)
1043 GlobalSettings settings;
1045 if (key == GlobalSettings::Key_View_ColoredBG) {
1046 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
1047 viewport_->update();
1050 if ((key == GlobalSettings::Key_View_ShowSamplingPoints) ||
1051 (key == GlobalSettings::Key_View_ShowAnalogMinorGrid))
1052 viewport_->update();
1054 if (key == GlobalSettings::Key_View_TriggerIsZeroTime)
1055 on_settingViewTriggerIsZeroTime_changed(value);
1057 if (key == GlobalSettings::Key_View_SnapDistance)
1058 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
1061 void View::trigger_event(int segment_id, util::Timestamp location)
1063 // TODO This doesn't work if we're showing multiple segments at once
1064 if ((uint32_t)segment_id != current_segment_)
1067 // Set zero location if the Key_View_TriggerIsZeroTime setting is set and
1068 // if this is the first trigger for this segment.
1069 GlobalSettings settings;
1070 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
1072 size_t trigger_count = session_.get_triggers(current_segment_).size();
1074 if (trigger_is_zero_time && trigger_count == 1)
1075 set_zero_position(location);
1077 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
1080 void View::get_scroll_layout(double &length, Timestamp &offset) const
1082 const pair<Timestamp, Timestamp> extents = get_time_extents();
1083 length = ((extents.second - extents.first) / scale_).convert_to<double>();
1084 offset = offset_ / scale_;
1087 void View::set_zoom(double scale, int offset)
1089 // Reset the "always zoom to fit" feature as the user changed the zoom
1090 always_zoom_to_fit_ = false;
1091 always_zoom_to_fit_changed(false);
1093 const Timestamp cursor_offset = offset_ + scale_ * offset;
1094 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
1095 const Timestamp new_offset = cursor_offset - new_scale * offset;
1096 set_scale_offset(new_scale.convert_to<double>(), new_offset);
1099 void View::calculate_tick_spacing()
1101 const double SpacingIncrement = 10.0f;
1102 const double MinValueSpacing = 40.0f;
1104 // Figure out the highest numeric value visible on a label
1105 const QSize areaSize = viewport_->size();
1106 const Timestamp max_time = max(fabs(offset_),
1107 fabs(offset_ + scale_ * areaSize.width()));
1109 double min_width = SpacingIncrement;
1110 double label_width, tick_period_width;
1112 QFontMetrics m(QApplication::font());
1114 // Copies of the member variables with the same name, used in the calculation
1115 // and written back afterwards, so that we don't emit signals all the time
1116 // during the calculation.
1117 pv::util::Timestamp tick_period = tick_period_;
1118 pv::util::SIPrefix tick_prefix = tick_prefix_;
1119 unsigned tick_precision = tick_precision_;
1122 const double min_period = scale_ * min_width;
1124 const int order = (int)floorf(log10f(min_period));
1125 const pv::util::Timestamp order_decimal =
1126 pow(pv::util::Timestamp(10), order);
1128 // Allow for a margin of error so that a scale unit of 1 can be used.
1129 // Otherwise, for a SU of 1 the tick period will almost always be below
1130 // the min_period by a small amount - and thus skipped in favor of 2.
1131 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
1132 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
1133 double tp_with_margin;
1134 unsigned int unit = 0;
1137 tp_with_margin = order_decimal.convert_to<double>() *
1138 (ScaleUnits[unit++] + tp_margin);
1139 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
1141 minor_tick_count_ = (unit == 2) ? 4 : 5;
1142 tick_period = order_decimal * ScaleUnits[unit - 1];
1143 tick_prefix = static_cast<pv::util::SIPrefix>(
1144 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
1146 // Precision is the number of fractional digits required, not
1147 // taking the prefix into account (and it must never be negative)
1148 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
1150 tick_period_width = (tick_period / scale_).convert_to<double>();
1152 const QString label_text = Ruler::format_time_with_distance(
1153 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
1155 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
1156 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
1159 min_width += SpacingIncrement;
1160 } while (tick_period_width < label_width);
1162 set_tick_period(tick_period);
1163 set_tick_prefix(tick_prefix);
1164 set_tick_precision(tick_precision);
1167 void View::adjust_top_margin()
1171 const QSize areaSize = viewport_->size();
1173 const pair<int, int> extents = v_extents();
1174 const int top_margin = owner_visual_v_offset() + extents.first;
1175 const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second;
1177 // Do we have empty space at the top while the last trace goes out of screen?
1178 if ((top_margin > 0) && (trace_bottom > areaSize.height())) {
1179 const int trace_height = extents.second - extents.first;
1181 // Center everything vertically if there is enough space
1182 if (areaSize.height() >= trace_height)
1183 set_v_offset(extents.first -
1184 ((areaSize.height() - trace_height) / 2));
1186 // Remove the top margin to make as many traces fit on screen as possible
1187 set_v_offset(extents.first);
1191 void View::update_scroll()
1194 QScrollBar *hscrollbar = scrollarea_->horizontalScrollBar();
1195 QScrollBar *vscrollbar = scrollarea_->verticalScrollBar();
1197 const QSize areaSize = viewport_->size();
1199 // Set the horizontal scroll bar
1202 get_scroll_layout(length, offset);
1203 length = max(length - areaSize.width(), 0.0);
1205 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
1207 hscrollbar->setPageStep(areaSize.width() / 2);
1208 hscrollbar->setSingleStep(major_tick_distance);
1210 updating_scroll_ = true;
1212 if (length < MaxScrollValue) {
1213 hscrollbar->setRange(0, length);
1214 hscrollbar->setSliderPosition(offset.convert_to<double>());
1216 hscrollbar->setRange(0, MaxScrollValue);
1217 hscrollbar->setSliderPosition(
1218 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
1221 updating_scroll_ = false;
1223 // Set the vertical scrollbar
1224 vscrollbar->setPageStep(areaSize.height());
1225 vscrollbar->setSingleStep(areaSize.height() / 8);
1227 const pair<int, int> extents = v_extents();
1229 // Don't change the scrollbar range if there are no traces
1230 if (extents.first != extents.second)
1231 vscrollbar->setRange(extents.first - areaSize.height(),
1234 if (scroll_needs_defaults_) {
1235 set_scroll_default();
1236 scroll_needs_defaults_ = false;
1240 void View::reset_scroll()
1242 scrollarea_->verticalScrollBar()->setRange(0, 0);
1245 void View::set_scroll_default()
1249 const QSize areaSize = viewport_->size();
1251 const pair<int, int> extents = v_extents();
1252 const int trace_height = extents.second - extents.first;
1254 // Do all traces fit in the view?
1255 if (areaSize.height() >= trace_height)
1256 // Center all traces vertically
1257 set_v_offset(extents.first -
1258 ((areaSize.height() - trace_height) / 2));
1260 // Put the first trace at the top, letting the bottom ones overflow
1261 set_v_offset(extents.first);
1264 void View::determine_if_header_was_shrunk()
1266 const int header_pane_width =
1267 splitter_->sizes().front(); // clazy:exclude=detaching-temporary
1269 // Allow for a slight margin of error so that we also accept
1270 // slight differences when e.g. a label name change increased
1271 // the overall width
1272 header_was_shrunk_ = (header_pane_width < (header_width() - 10));
1275 void View::resize_header_to_fit()
1277 // Setting the maximum width of the header widget doesn't work as
1278 // expected because the splitter would allow the user to make the
1279 // pane wider than that, creating empty space as a result.
1280 // To make this work, we stricly enforce the maximum width by
1281 // expanding the header unless the user shrunk it on purpose.
1282 // As we're then setting the width of the header pane, we set the
1283 // splitter to the maximum allowed position.
1285 int splitter_area_width = 0;
1286 for (int w : splitter_->sizes()) // clazy:exclude=range-loop
1287 splitter_area_width += w;
1289 // Make sure the header has enough horizontal space to show all labels fully
1290 QList<int> pane_sizes;
1291 pane_sizes.push_back(header_->extended_size_hint().width());
1292 pane_sizes.push_back(splitter_area_width - header_->extended_size_hint().width());
1293 splitter_->setSizes(pane_sizes);
1296 void View::update_layout()
1301 TraceTreeItemOwner* View::find_prevalent_trace_group(
1302 const shared_ptr<sigrok::ChannelGroup> &group,
1303 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1308 unordered_set<TraceTreeItemOwner*> owners;
1309 vector<TraceTreeItemOwner*> owner_list;
1311 // Make a set and a list of all the owners
1312 for (const auto& channel : group->channels()) {
1313 for (auto& entry : signal_map) {
1314 if (entry.first->channel() == channel) {
1315 TraceTreeItemOwner *const o = (entry.second)->owner();
1316 owner_list.push_back(o);
1322 // Iterate through the list of owners, and find the most prevalent
1323 size_t max_prevalence = 0;
1324 TraceTreeItemOwner *prevalent_owner = nullptr;
1325 for (TraceTreeItemOwner *owner : owners) {
1326 const size_t prevalence = count_if(
1327 owner_list.begin(), owner_list.end(),
1328 [&](TraceTreeItemOwner *o) { return o == owner; });
1329 if (prevalence > max_prevalence) {
1330 max_prevalence = prevalence;
1331 prevalent_owner = owner;
1335 return prevalent_owner;
1338 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
1339 const vector< shared_ptr<sigrok::Channel> > &channels,
1340 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1342 set< shared_ptr<Trace> > &add_list)
1344 vector< shared_ptr<Trace> > filtered_traces;
1346 for (const auto& channel : channels) {
1347 for (auto& entry : signal_map) {
1348 if (entry.first->channel() == channel) {
1349 shared_ptr<Trace> trace = entry.second;
1350 const auto list_iter = add_list.find(trace);
1351 if (list_iter == add_list.end())
1354 filtered_traces.push_back(trace);
1355 add_list.erase(list_iter);
1360 return filtered_traces;
1363 void View::determine_time_unit()
1365 // Check whether we know the sample rate and hence can use time as the unit
1366 if (time_unit_ == util::TimeUnit::Samples) {
1367 // Check all signals but...
1368 for (const shared_ptr<Signal>& signal : signals_) {
1369 const shared_ptr<SignalData> data = signal->data();
1371 // ...only check first segment of each
1372 const vector< shared_ptr<Segment> > segments = data->segments();
1373 if (!segments.empty())
1374 if (segments[0]->samplerate()) {
1375 set_time_unit(util::TimeUnit::Time);
1382 bool View::eventFilter(QObject *object, QEvent *event)
1384 const QEvent::Type type = event->type();
1385 if (type == QEvent::MouseMove) {
1388 hover_widget_ = qobject_cast<QWidget*>(object);
1390 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1391 if (object == viewport_)
1392 hover_point_ = mouse_event->pos();
1393 else if (object == ruler_)
1394 hover_point_ = mouse_event->pos();
1395 else if (object == header_)
1396 hover_point_ = QPoint(0, mouse_event->y());
1398 hover_point_ = QPoint(-1, -1);
1400 update_hover_point();
1402 } else if (type == QEvent::Leave) {
1403 hover_point_ = QPoint(-1, -1);
1404 update_hover_point();
1405 } else if (type == QEvent::Show) {
1407 // This is somewhat of a hack, unfortunately. We cannot use
1408 // set_v_offset() from within restore_settings() as the view
1409 // at that point is neither visible nor properly sized.
1410 // This is the least intrusive workaround I could come up
1411 // with: set the vertical offset (or scroll defaults) when
1412 // the view is shown, which happens after all widgets were
1413 // resized to their final sizes.
1416 if (settings_restored_)
1417 determine_if_header_was_shrunk();
1419 resize_header_to_fit();
1421 if (scroll_needs_defaults_) {
1422 set_scroll_default();
1423 scroll_needs_defaults_ = false;
1426 if (saved_v_offset_) {
1427 set_v_offset(saved_v_offset_);
1428 saved_v_offset_ = 0;
1432 return QObject::eventFilter(object, event);
1435 void View::contextMenuEvent(QContextMenuEvent *event)
1437 QPoint pos = event->pos() - QPoint(0, ruler_->sizeHint().height());
1439 const shared_ptr<ViewItem> r = viewport_->get_mouse_over_item(pos);
1443 QMenu *menu = r->create_view_context_menu(this, pos);
1445 menu->popup(event->globalPos());
1448 void View::resizeEvent(QResizeEvent* event)
1450 // Only adjust the top margin if we shrunk vertically
1451 if (event->size().height() < event->oldSize().height())
1452 adjust_top_margin();
1457 void View::update_hover_point()
1459 // Determine signal that the mouse cursor is hovering over
1460 signal_under_mouse_cursor_.reset();
1461 if (hover_widget_ == this) {
1462 for (const shared_ptr<Signal>& s : signals_) {
1463 const pair<int, int> extents = s->v_extents();
1464 const int top = s->get_visual_y() + extents.first;
1465 const int btm = s->get_visual_y() + extents.second;
1466 if ((hover_point_.y() >= top) && (hover_point_.y() <= btm)
1467 && s->base()->enabled())
1468 signal_under_mouse_cursor_ = s;
1472 // Update all trace tree items
1473 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1474 list_by_type<TraceTreeItem>());
1475 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1476 r->hover_point_changed(hover_point_);
1478 // Notify any other listeners
1479 hover_point_changed(hover_widget_, hover_point_);
1482 void View::row_item_appearance_changed(bool label, bool content)
1487 viewport_->update();
1490 void View::time_item_appearance_changed(bool label, bool content)
1495 // Make sure the header pane width is updated, too
1500 viewport_->update();
1503 void View::extents_changed(bool horz, bool vert)
1506 (horz ? TraceTreeItemHExtentsChanged : 0) |
1507 (vert ? TraceTreeItemVExtentsChanged : 0);
1509 lazy_event_handler_.stop();
1510 lazy_event_handler_.start();
1513 void View::on_signal_name_changed()
1515 if (!header_was_shrunk_)
1516 resize_header_to_fit();
1519 void View::on_splitter_moved()
1521 // The header can only shrink when the splitter is moved manually
1522 determine_if_header_was_shrunk();
1524 if (!header_was_shrunk_)
1525 resize_header_to_fit();
1528 void View::on_zoom_in_shortcut_triggered()
1533 void View::on_zoom_out_shortcut_triggered()
1538 void View::on_scroll_to_start_shortcut_triggered()
1543 void View::on_scroll_to_end_shortcut_triggered()
1545 set_h_offset(get_h_scrollbar_maximum());
1548 void View::h_scroll_value_changed(int value)
1550 if (updating_scroll_)
1553 // Disable sticky scrolling when user moves the horizontal scroll bar
1554 // during a running acquisition
1555 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1556 sticky_scrolling_ = false;
1557 sticky_scrolling_changed(false);
1560 const int range = scrollarea_->horizontalScrollBar()->maximum();
1561 if (range < MaxScrollValue)
1562 set_offset(scale_ * value);
1566 get_scroll_layout(length, offset);
1567 set_offset(scale_ * length * value / MaxScrollValue);
1571 viewport_->update();
1574 void View::v_scroll_value_changed()
1577 viewport_->update();
1580 void View::signals_changed()
1582 using sigrok::Channel;
1584 vector< shared_ptr<Channel> > channels;
1585 shared_ptr<sigrok::Device> sr_dev;
1586 bool signals_added_or_removed = false;
1588 // Do we need to set the vertical scrollbar to its default position later?
1589 // We do if there are no traces, i.e. the scroll bar has no range set
1590 bool reset_scrollbar =
1591 (scrollarea_->verticalScrollBar()->minimum() ==
1592 scrollarea_->verticalScrollBar()->maximum());
1594 if (!session_.device()) {
1598 sr_dev = session_.device()->device();
1600 channels = sr_dev->channels();
1603 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1605 // Make a list of traces that are being added, and a list of traces
1606 // that are being removed
1607 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1608 const set<shared_ptr<Trace>> prev_traces(
1609 prev_trace_list.begin(), prev_trace_list.end());
1611 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1613 #ifdef ENABLE_DECODE
1614 traces.insert(decode_traces_.begin(), decode_traces_.end());
1617 set< shared_ptr<Trace> > add_traces;
1618 set_difference(traces.begin(), traces.end(),
1619 prev_traces.begin(), prev_traces.end(),
1620 inserter(add_traces, add_traces.begin()));
1622 set< shared_ptr<Trace> > remove_traces;
1623 set_difference(prev_traces.begin(), prev_traces.end(),
1624 traces.begin(), traces.end(),
1625 inserter(remove_traces, remove_traces.begin()));
1627 // Make a look-up table of sigrok Channels to pulseview Signals
1628 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1630 for (const shared_ptr<Signal>& sig : signals_)
1631 signal_map[sig->base()] = sig;
1633 // Populate channel groups
1635 for (auto& entry : sr_dev->channel_groups()) {
1636 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1638 if (group->channels().size() <= 1)
1641 // Find best trace group to add to
1642 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1645 // If there is no trace group, create one
1646 shared_ptr<TraceGroup> new_trace_group;
1648 new_trace_group.reset(new TraceGroup());
1649 owner = new_trace_group.get();
1652 // Extract traces for the trace group, removing them from
1654 const vector< shared_ptr<Trace> > new_traces_in_group =
1655 extract_new_traces_for_channels(group->channels(),
1656 signal_map, add_traces);
1658 // Add the traces to the group
1659 const pair<int, int> prev_v_extents = owner->v_extents();
1660 int offset = prev_v_extents.second - prev_v_extents.first;
1661 for (const shared_ptr<Trace>& trace : new_traces_in_group) {
1663 owner->add_child_item(trace);
1665 const pair<int, int> extents = trace->v_extents();
1666 if (trace->enabled())
1667 offset += -extents.first;
1668 trace->force_to_v_offset(offset);
1669 if (trace->enabled())
1670 offset += extents.second;
1673 if (new_trace_group) {
1674 // Assign proper vertical offsets to each channel in the group
1675 new_trace_group->restack_items();
1677 // If this is a new group, enqueue it in the new top level
1679 if (!new_traces_in_group.empty())
1680 new_top_level_items.push_back(new_trace_group);
1684 // Enqueue the remaining logic channels in a group
1685 vector< shared_ptr<Channel> > logic_channels;
1686 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1687 [](const shared_ptr<Channel>& c) {
1688 return c->type() == sigrok::ChannelType::LOGIC; });
1690 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1691 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1693 if (non_grouped_logic_signals.size() > 0) {
1694 const shared_ptr<TraceGroup> non_grouped_trace_group(
1695 make_shared<TraceGroup>());
1696 for (const shared_ptr<Trace>& trace : non_grouped_logic_signals)
1697 non_grouped_trace_group->add_child_item(trace);
1699 non_grouped_trace_group->restack_items();
1700 new_top_level_items.push_back(non_grouped_trace_group);
1703 // Enqueue the remaining channels as free ungrouped traces
1704 const vector< shared_ptr<Trace> > new_top_level_signals =
1705 extract_new_traces_for_channels(channels, signal_map, add_traces);
1706 new_top_level_items.insert(new_top_level_items.end(),
1707 new_top_level_signals.begin(), new_top_level_signals.end());
1709 // Enqueue any remaining traces i.e. decode traces
1710 new_top_level_items.insert(new_top_level_items.end(),
1711 add_traces.begin(), add_traces.end());
1713 // Remove any removed traces
1714 for (const shared_ptr<Trace>& trace : remove_traces) {
1715 TraceTreeItemOwner *const owner = trace->owner();
1717 owner->remove_child_item(trace);
1718 signals_added_or_removed = true;
1721 // Remove any empty trace groups
1722 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1723 if (group->child_items().size() == 0) {
1724 remove_child_item(group);
1728 // Add and position the pending top levels items
1729 int offset = v_extents().second;
1730 for (auto item : new_top_level_items) {
1731 add_child_item(item);
1733 // Position the item after the last item or at the top if there is none
1734 const pair<int, int> extents = item->v_extents();
1736 if (item->enabled())
1737 offset += -extents.first;
1739 item->force_to_v_offset(offset);
1741 if (item->enabled())
1742 offset += extents.second;
1743 signals_added_or_removed = true;
1747 if (signals_added_or_removed && !header_was_shrunk_)
1748 resize_header_to_fit();
1753 viewport_->update();
1755 if (reset_scrollbar)
1756 set_scroll_default();
1759 void View::capture_state_updated(int state)
1761 GlobalSettings settings;
1763 if (state == Session::Running) {
1764 set_time_unit(util::TimeUnit::Samples);
1766 trigger_markers_.clear();
1767 set_zero_position(0);
1769 scale_at_acq_start_ = scale_;
1770 offset_at_acq_start_ = offset_;
1772 // Activate "always zoom to fit" if the setting is enabled and we're
1773 // the main view of this session (other trace views may be used for
1774 // zooming and we don't want to mess them up)
1775 bool state = settings.value(GlobalSettings::Key_View_ZoomToFitDuringAcq).toBool();
1776 if (is_main_view_ && state) {
1777 always_zoom_to_fit_ = true;
1778 always_zoom_to_fit_changed(always_zoom_to_fit_);
1781 // Enable sticky scrolling if the setting is enabled
1782 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
1784 // Reset all traces to segment 0
1785 current_segment_ = 0;
1786 set_current_segment(current_segment_);
1789 if (state == Session::Stopped) {
1790 // After acquisition has stopped we need to re-calculate the ticks once
1791 // as it's otherwise done when the user pans or zooms, which is too late
1792 calculate_tick_spacing();
1794 // Reset "always zoom to fit", the acquisition has stopped
1795 if (always_zoom_to_fit_) {
1796 // Perform a final zoom-to-fit before disabling
1797 zoom_fit(always_zoom_to_fit_);
1798 always_zoom_to_fit_ = false;
1799 always_zoom_to_fit_changed(always_zoom_to_fit_);
1802 bool zoom_to_fit_after_acq =
1803 settings.value(GlobalSettings::Key_View_ZoomToFitAfterAcq).toBool();
1805 // Only perform zoom-to-fit if the user hasn't altered the viewport and
1806 // we didn't restore settings in the meanwhile
1807 if (zoom_to_fit_after_acq &&
1808 !suppress_zoom_to_fit_after_acq_ &&
1809 (scale_ == scale_at_acq_start_) &&
1810 (offset_ == offset_at_acq_start_))
1811 zoom_fit(false); // We're stopped, so the GUI state doesn't matter
1813 suppress_zoom_to_fit_after_acq_ = false;
1817 void View::on_new_segment(int new_segment_id)
1819 on_segment_changed(new_segment_id);
1822 void View::on_segment_completed(int segment_id)
1824 on_segment_changed(segment_id);
1827 void View::on_segment_changed(int segment)
1829 switch (segment_display_mode_) {
1830 case Trace::ShowLastSegmentOnly:
1831 case Trace::ShowSingleSegmentOnly:
1832 set_current_segment(segment);
1835 case Trace::ShowLastCompleteSegmentOnly:
1836 // Only update if all segments are complete
1837 if (session_.all_segments_complete(segment))
1838 set_current_segment(segment);
1841 case Trace::ShowAllSegments:
1842 case Trace::ShowAccumulatedIntensity:
1848 void View::on_settingViewTriggerIsZeroTime_changed(const QVariant new_value)
1850 if (new_value.toBool()) {
1851 // The first trigger for this segment is used as the zero position
1852 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
1853 if (triggers.size() > 0)
1854 set_zero_position(triggers.front());
1856 reset_zero_position();
1859 void View::perform_delayed_view_update()
1861 if (always_zoom_to_fit_) {
1863 } else if (sticky_scrolling_) {
1864 // Make right side of the view sticky
1867 get_scroll_layout(length, offset);
1869 const QSize areaSize = viewport_->size();
1870 length = max(length - areaSize.width(), 0.0);
1872 set_offset(scale_ * length);
1875 determine_time_unit();
1878 viewport_->update();
1881 void View::process_sticky_events()
1883 if (sticky_events_ & TraceTreeItemHExtentsChanged)
1885 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
1886 restack_all_trace_tree_items();
1890 // Clear the sticky events
1894 } // namespace trace
1895 } // namespace views