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 void View::reset_view_state()
249 ViewBase::reset_view_state();
251 segment_display_mode_ = Trace::ShowLastSegmentOnly;
252 segment_selectable_ = false;
256 updating_scroll_ = false;
257 settings_restored_ = false;
258 always_zoom_to_fit_ = false;
260 tick_prefix_ = pv::util::SIPrefix::yocto;
262 time_unit_ = util::TimeUnit::Time;
263 show_cursors_ = false;
264 cursors_ = make_shared<CursorPair>(*this);
265 next_flag_text_ = 'A';
266 trigger_markers_.clear();
267 hover_widget_ = nullptr;
268 hover_point_ = QPoint(-1, -1);
269 scroll_needs_defaults_ = true;
271 scale_at_acq_start_ = 0;
272 offset_at_acq_start_ = 0;
273 suppress_zoom_to_fit_after_acq_ = false;
275 show_cursors_ = false;
276 cursor_state_changed(show_cursors_);
279 // Update the zoom state
280 calculate_tick_spacing();
282 // Make sure the standard bar's segment selector is in sync
283 set_segment_display_mode(segment_display_mode_);
286 Session& View::session()
291 const Session& View::session() const
296 unordered_set< shared_ptr<Signal> > View::signals() const
301 void View::clear_signals()
303 ViewBase::clear_signalbases();
307 void View::add_signal(const shared_ptr<Signal> signal)
309 ViewBase::add_signalbase(signal->base());
310 signals_.insert(signal);
312 signal->set_segment_display_mode(segment_display_mode_);
313 signal->set_current_segment(current_segment_);
315 connect(signal->base().get(), SIGNAL(name_changed(const QString&)),
316 this, SLOT(on_signal_name_changed()));
320 void View::clear_decode_signals()
322 decode_traces_.clear();
325 void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
327 shared_ptr<DecodeTrace> d(
328 new DecodeTrace(session_, signal, decode_traces_.size()));
329 decode_traces_.push_back(d);
331 d->set_segment_display_mode(segment_display_mode_);
332 d->set_current_segment(current_segment_);
334 connect(signal.get(), SIGNAL(name_changed(const QString&)),
335 this, SLOT(on_signal_name_changed()));
338 void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
340 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
341 if ((*i)->base() == signal) {
342 decode_traces_.erase(i);
349 shared_ptr<Signal> View::get_signal_under_mouse_cursor() const
351 return signal_under_mouse_cursor_;
359 const View* View::view() const
364 Viewport* View::viewport()
369 const Viewport* View::viewport() const
374 const Ruler* View::ruler() const
379 void View::save_settings(QSettings &settings) const
381 settings.setValue("scale", scale_);
382 settings.setValue("v_offset",
383 scrollarea_->verticalScrollBar()->sliderPosition());
385 settings.setValue("splitter_state", splitter_->saveState());
386 settings.setValue("segment_display_mode", segment_display_mode_);
390 boost::archive::text_oarchive oa(ss);
391 oa << boost::serialization::make_nvp("offset", offset_);
392 settings.setValue("offset", QString::fromStdString(ss.str()));
395 for (const shared_ptr<Signal>& signal : signals_) {
396 settings.beginGroup(signal->base()->internal_name());
397 signal->save_settings(settings);
402 void View::restore_settings(QSettings &settings)
404 // Note: It is assumed that this function is only called once,
405 // immediately after restoring a previous session.
407 if (settings.contains("scale"))
408 set_scale(settings.value("scale").toDouble());
410 if (settings.contains("offset")) {
411 util::Timestamp offset;
413 ss << settings.value("offset").toString().toStdString();
416 boost::archive::text_iarchive ia(ss);
417 ia >> boost::serialization::make_nvp("offset", offset);
418 // This also updates ruler_offset_
420 } catch (boost::archive::archive_exception&) {
421 qDebug() << "Could not restore the view offset";
425 if (settings.contains("splitter_state"))
426 splitter_->restoreState(settings.value("splitter_state").toByteArray());
428 if (settings.contains("segment_display_mode"))
429 set_segment_display_mode(
430 (Trace::SegmentDisplayMode)(settings.value("segment_display_mode").toInt()));
432 for (shared_ptr<Signal> signal : signals_) {
433 settings.beginGroup(signal->base()->internal_name());
434 signal->restore_settings(settings);
438 if (settings.contains("v_offset")) {
439 saved_v_offset_ = settings.value("v_offset").toInt();
440 set_v_offset(saved_v_offset_);
441 scroll_needs_defaults_ = false;
442 // Note: see eventFilter() for additional information
445 settings_restored_ = true;
446 suppress_zoom_to_fit_after_acq_ = true;
448 // Update the ruler so that it uses the new scale
449 calculate_tick_spacing();
452 vector< shared_ptr<TimeItem> > View::time_items() const
454 const vector<shared_ptr<Flag>> f(flags());
455 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
458 items.push_back(cursors_);
459 items.push_back(cursors_->first());
460 items.push_back(cursors_->second());
463 for (auto& trigger_marker : trigger_markers_)
464 items.push_back(trigger_marker);
469 double View::scale() const
474 void View::set_scale(double scale)
476 if (scale_ != scale) {
482 void View::set_offset(const pv::util::Timestamp& offset, bool force_update)
484 if ((offset_ != offset) || force_update) {
486 ruler_offset_ = offset_ + zero_offset_;
491 const Timestamp& View::offset() const
496 const Timestamp& View::ruler_offset() const
498 return ruler_offset_;
501 void View::set_zero_position(const pv::util::Timestamp& position)
503 zero_offset_ = -position;
505 // Force an immediate update of the offsets
506 set_offset(offset_, true);
510 void View::reset_zero_position()
514 // Force an immediate update of the offsets
515 set_offset(offset_, true);
519 pv::util::Timestamp View::zero_offset() const
524 int View::owner_visual_v_offset() const
526 return -scrollarea_->verticalScrollBar()->sliderPosition();
529 void View::set_v_offset(int offset)
531 scrollarea_->verticalScrollBar()->setSliderPosition(offset);
536 void View::set_h_offset(int offset)
538 scrollarea_->horizontalScrollBar()->setSliderPosition(offset);
543 int View::get_h_scrollbar_maximum() const
545 return scrollarea_->horizontalScrollBar()->maximum();
548 unsigned int View::depth() const
553 uint32_t View::current_segment() const
555 return current_segment_;
558 pv::util::SIPrefix View::tick_prefix() const
563 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
565 if (tick_prefix_ != tick_prefix) {
566 tick_prefix_ = tick_prefix;
567 tick_prefix_changed();
571 unsigned int View::tick_precision() const
573 return tick_precision_;
576 void View::set_tick_precision(unsigned tick_precision)
578 if (tick_precision_ != tick_precision) {
579 tick_precision_ = tick_precision;
580 tick_precision_changed();
584 const pv::util::Timestamp& View::tick_period() const
589 unsigned int View::minor_tick_count() const
591 return minor_tick_count_;
594 void View::set_tick_period(const pv::util::Timestamp& tick_period)
596 if (tick_period_ != tick_period) {
597 tick_period_ = tick_period;
598 tick_period_changed();
602 TimeUnit View::time_unit() const
607 void View::set_time_unit(pv::util::TimeUnit time_unit)
609 if (time_unit_ != time_unit) {
610 time_unit_ = time_unit;
615 void View::set_current_segment(uint32_t segment_id)
617 current_segment_ = segment_id;
619 for (const shared_ptr<Signal>& signal : signals_)
620 signal->set_current_segment(current_segment_);
622 for (shared_ptr<DecodeTrace>& dt : decode_traces_)
623 dt->set_current_segment(current_segment_);
626 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
628 trigger_markers_.clear();
629 for (util::Timestamp timestamp : triggers)
630 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, timestamp));
632 // When enabled, the first trigger for this segment is used as the zero position
633 GlobalSettings settings;
634 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
636 if (trigger_is_zero_time && (triggers.size() > 0))
637 set_zero_position(triggers.front());
641 segment_changed(segment_id);
644 bool View::segment_is_selectable() const
646 return segment_selectable_;
649 Trace::SegmentDisplayMode View::segment_display_mode() const
651 return segment_display_mode_;
654 void View::set_segment_display_mode(Trace::SegmentDisplayMode mode)
656 segment_display_mode_ = mode;
658 for (const shared_ptr<Signal>& signal : signals_)
659 signal->set_segment_display_mode(mode);
661 uint32_t last_segment = session_.get_segment_count() - 1;
664 case Trace::ShowLastSegmentOnly:
665 if (current_segment_ != last_segment)
666 set_current_segment(last_segment);
669 case Trace::ShowLastCompleteSegmentOnly:
670 // Do nothing if we only have one segment so far
671 if (last_segment > 0) {
672 // If the last segment isn't complete, the previous one must be
673 uint32_t segment_id =
674 (session_.all_segments_complete(last_segment)) ?
675 last_segment : last_segment - 1;
677 if (current_segment_ != segment_id)
678 set_current_segment(segment_id);
682 case Trace::ShowSingleSegmentOnly:
683 case Trace::ShowAllSegments:
684 case Trace::ShowAccumulatedIntensity:
686 // Current segment remains as-is
690 segment_selectable_ = true;
692 if ((mode == Trace::ShowAllSegments) || (mode == Trace::ShowAccumulatedIntensity))
693 segment_selectable_ = false;
697 segment_display_mode_changed((int)mode, segment_selectable_);
700 void View::zoom(double steps)
702 zoom(steps, viewport_->width() / 2);
705 void View::zoom(double steps, int offset)
707 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
710 void View::zoom_fit(bool gui_state)
712 // Act as one-shot when stopped, toggle along with the GUI otherwise
713 if (session_.get_capture_state() == Session::Stopped) {
714 always_zoom_to_fit_ = false;
715 always_zoom_to_fit_changed(false);
717 always_zoom_to_fit_ = gui_state;
718 always_zoom_to_fit_changed(gui_state);
721 const pair<Timestamp, Timestamp> extents = get_time_extents();
722 const Timestamp delta = extents.second - extents.first;
723 if (delta < Timestamp("1e-12"))
727 const int w = viewport_->width();
731 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
732 set_scale_offset(scale.convert_to<double>(), extents.first);
735 void View::set_scale_offset(double scale, const Timestamp& offset)
737 // Disable sticky scrolling / always zoom to fit when acquisition runs
738 // and user drags the viewport
739 if ((scale_ == scale) && (offset_ != offset) &&
740 (session_.get_capture_state() == Session::Running)) {
742 if (sticky_scrolling_) {
743 sticky_scrolling_ = false;
744 sticky_scrolling_changed(false);
747 if (always_zoom_to_fit_) {
748 always_zoom_to_fit_ = false;
749 always_zoom_to_fit_changed(false);
756 calculate_tick_spacing();
763 set< shared_ptr<SignalData> > View::get_visible_data() const
765 // Make a set of all the visible data objects
766 set< shared_ptr<SignalData> > visible_data;
767 for (const shared_ptr<Signal>& sig : signals_)
769 visible_data.insert(sig->data());
774 pair<Timestamp, Timestamp> View::get_time_extents() const
776 boost::optional<Timestamp> left_time, right_time;
777 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
778 for (const shared_ptr<SignalData>& d : visible_data) {
779 const vector< shared_ptr<Segment> > segments = d->segments();
780 for (const shared_ptr<Segment>& s : segments) {
781 double samplerate = s->samplerate();
782 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
784 const Timestamp start_time = s->start_time();
785 left_time = left_time ?
786 min(*left_time, start_time) :
788 right_time = right_time ?
789 max(*right_time, start_time + d->max_sample_count() / samplerate) :
790 start_time + d->max_sample_count() / samplerate;
794 if (!left_time || !right_time)
795 return make_pair(0, 0);
797 assert(*left_time < *right_time);
798 return make_pair(*left_time, *right_time);
801 bool View::colored_bg() const
806 bool View::cursors_shown() const
808 return show_cursors_;
811 void View::show_cursors(bool show)
813 if (show_cursors_ != show) {
814 show_cursors_ = show;
816 cursor_state_changed(show);
822 void View::set_cursors(pv::util::Timestamp& first, pv::util::Timestamp& second)
826 cursors_->first()->set_time(first);
827 cursors_->second()->set_time(second);
833 void View::centre_cursors()
837 const double time_width = scale_ * viewport_->width();
838 cursors_->first()->set_time(offset_ + time_width * 0.4);
839 cursors_->second()->set_time(offset_ + time_width * 0.6);
845 shared_ptr<CursorPair> View::cursors() const
850 shared_ptr<Flag> View::add_flag(const Timestamp& time)
852 shared_ptr<Flag> flag =
853 make_shared<Flag>(*this, time, QString("%1").arg(next_flag_text_));
854 flags_.push_back(flag);
856 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
857 (next_flag_text_ + 1);
859 time_item_appearance_changed(true, true);
863 void View::remove_flag(shared_ptr<Flag> flag)
866 time_item_appearance_changed(true, true);
869 vector< shared_ptr<Flag> > View::flags() const
871 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
872 stable_sort(flags.begin(), flags.end(),
873 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
874 return a->time() < b->time();
880 const QPoint& View::hover_point() const
885 const QWidget* View::hover_widget() const
887 return hover_widget_;
890 int64_t View::get_nearest_level_change(const QPoint &p)
892 // Is snapping disabled?
893 if (snap_distance_ == 0)
897 entry_t(shared_ptr<Signal> s) :
898 signal(s), delta(numeric_limits<int64_t>::max()), sample(-1), is_dense(false) {}
899 shared_ptr<Signal> signal;
905 vector<entry_t> list;
907 // Create list of signals to consider
908 if (signal_under_mouse_cursor_)
909 list.emplace_back(signal_under_mouse_cursor_);
911 for (shared_ptr<Signal> s : signals_) {
915 list.emplace_back(s);
918 // Get data for listed signals
919 for (entry_t &e : list) {
920 // Calculate sample number from cursor position
921 const double samples_per_pixel = e.signal->base()->get_samplerate() * scale();
922 const int64_t x_offset = offset().convert_to<double>() / scale();
923 const int64_t sample_num = max(((x_offset + p.x()) * samples_per_pixel), 0.0);
925 vector<data::LogicSegment::EdgePair> edges =
926 e.signal->get_nearest_level_changes(sample_num);
932 const int64_t first_sample_delta = abs(sample_num - edges.front().first);
933 const int64_t first_delta = first_sample_delta / samples_per_pixel;
934 e.delta = first_delta;
935 e.sample = edges.front().first;
937 // Check second edge if available
938 if (edges.size() == 2) {
939 // Note: -1 because this is usually the right edge and sample points are left-aligned
940 const int64_t second_sample_delta = abs(sample_num - edges.back().first - 1);
941 const int64_t second_delta = second_sample_delta / samples_per_pixel;
943 // If both edges are too close, we mark this signal as being dense
944 if ((first_delta + second_delta) <= snap_distance_)
947 if (second_delta < first_delta) {
948 e.delta = second_delta;
949 e.sample = edges.back().first;
954 // Look for the best match: non-dense first, then dense
955 entry_t *match = nullptr;
957 for (entry_t &e : list) {
958 if (e.delta > snap_distance_ || e.is_dense)
962 if (e.delta < match->delta)
969 for (entry_t &e : list) {
974 if (e.delta < match->delta)
982 // Somewhat ugly hack to make TimeItem::drag_by() work
983 signal_under_mouse_cursor_ = match->signal;
985 return match->sample;
991 void View::restack_all_trace_tree_items()
993 // Make a list of owners that is sorted from deepest first
994 const vector<shared_ptr<TraceTreeItem>> items(
995 list_by_type<TraceTreeItem>());
996 set< TraceTreeItemOwner* > owners;
997 for (const auto &r : items)
998 owners.insert(r->owner());
999 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
1000 sort(sorted_owners.begin(), sorted_owners.end(),
1001 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
1002 return a->depth() > b->depth(); });
1004 // Restack the items recursively
1005 for (auto &o : sorted_owners)
1008 // Animate the items to their destination
1009 for (const auto &i : items)
1010 i->animate_to_layout_v_offset();
1013 int View::header_width() const
1015 return header_->extended_size_hint().width();
1018 void View::on_setting_changed(const QString &key, const QVariant &value)
1020 GlobalSettings settings;
1022 if (key == GlobalSettings::Key_View_ColoredBG) {
1023 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
1024 viewport_->update();
1027 if ((key == GlobalSettings::Key_View_ShowSamplingPoints) ||
1028 (key == GlobalSettings::Key_View_ShowAnalogMinorGrid))
1029 viewport_->update();
1031 if (key == GlobalSettings::Key_View_TriggerIsZeroTime)
1032 on_settingViewTriggerIsZeroTime_changed(value);
1034 if (key == GlobalSettings::Key_View_SnapDistance)
1035 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
1038 void View::trigger_event(int segment_id, util::Timestamp location)
1040 // TODO This doesn't work if we're showing multiple segments at once
1041 if ((uint32_t)segment_id != current_segment_)
1044 // Set zero location if the Key_View_TriggerIsZeroTime setting is set and
1045 // if this is the first trigger for this segment.
1046 GlobalSettings settings;
1047 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
1049 size_t trigger_count = session_.get_triggers(current_segment_).size();
1051 if (trigger_is_zero_time && trigger_count == 1)
1052 set_zero_position(location);
1054 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
1057 void View::get_scroll_layout(double &length, Timestamp &offset) const
1059 const pair<Timestamp, Timestamp> extents = get_time_extents();
1060 length = ((extents.second - extents.first) / scale_).convert_to<double>();
1061 offset = offset_ / scale_;
1064 void View::set_zoom(double scale, int offset)
1066 // Reset the "always zoom to fit" feature as the user changed the zoom
1067 always_zoom_to_fit_ = false;
1068 always_zoom_to_fit_changed(false);
1070 const Timestamp cursor_offset = offset_ + scale_ * offset;
1071 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
1072 const Timestamp new_offset = cursor_offset - new_scale * offset;
1073 set_scale_offset(new_scale.convert_to<double>(), new_offset);
1076 void View::calculate_tick_spacing()
1078 const double SpacingIncrement = 10.0f;
1079 const double MinValueSpacing = 40.0f;
1081 // Figure out the highest numeric value visible on a label
1082 const QSize areaSize = viewport_->size();
1083 const Timestamp max_time = max(fabs(offset_),
1084 fabs(offset_ + scale_ * areaSize.width()));
1086 double min_width = SpacingIncrement;
1087 double label_width, tick_period_width;
1089 QFontMetrics m(QApplication::font());
1091 // Copies of the member variables with the same name, used in the calculation
1092 // and written back afterwards, so that we don't emit signals all the time
1093 // during the calculation.
1094 pv::util::Timestamp tick_period = tick_period_;
1095 pv::util::SIPrefix tick_prefix = tick_prefix_;
1096 unsigned tick_precision = tick_precision_;
1099 const double min_period = scale_ * min_width;
1101 const int order = (int)floorf(log10f(min_period));
1102 const pv::util::Timestamp order_decimal =
1103 pow(pv::util::Timestamp(10), order);
1105 // Allow for a margin of error so that a scale unit of 1 can be used.
1106 // Otherwise, for a SU of 1 the tick period will almost always be below
1107 // the min_period by a small amount - and thus skipped in favor of 2.
1108 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
1109 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
1110 double tp_with_margin;
1111 unsigned int unit = 0;
1114 tp_with_margin = order_decimal.convert_to<double>() *
1115 (ScaleUnits[unit++] + tp_margin);
1116 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
1118 minor_tick_count_ = (unit == 2) ? 4 : 5;
1119 tick_period = order_decimal * ScaleUnits[unit - 1];
1120 tick_prefix = static_cast<pv::util::SIPrefix>(
1121 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
1123 // Precision is the number of fractional digits required, not
1124 // taking the prefix into account (and it must never be negative)
1125 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
1127 tick_period_width = (tick_period / scale_).convert_to<double>();
1129 const QString label_text = Ruler::format_time_with_distance(
1130 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
1132 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
1133 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
1136 min_width += SpacingIncrement;
1137 } while (tick_period_width < label_width);
1139 set_tick_period(tick_period);
1140 set_tick_prefix(tick_prefix);
1141 set_tick_precision(tick_precision);
1144 void View::adjust_top_margin()
1148 const QSize areaSize = viewport_->size();
1150 const pair<int, int> extents = v_extents();
1151 const int top_margin = owner_visual_v_offset() + extents.first;
1152 const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second;
1154 // Do we have empty space at the top while the last trace goes out of screen?
1155 if ((top_margin > 0) && (trace_bottom > areaSize.height())) {
1156 const int trace_height = extents.second - extents.first;
1158 // Center everything vertically if there is enough space
1159 if (areaSize.height() >= trace_height)
1160 set_v_offset(extents.first -
1161 ((areaSize.height() - trace_height) / 2));
1163 // Remove the top margin to make as many traces fit on screen as possible
1164 set_v_offset(extents.first);
1168 void View::update_scroll()
1171 QScrollBar *hscrollbar = scrollarea_->horizontalScrollBar();
1172 QScrollBar *vscrollbar = scrollarea_->verticalScrollBar();
1174 const QSize areaSize = viewport_->size();
1176 // Set the horizontal scroll bar
1179 get_scroll_layout(length, offset);
1180 length = max(length - areaSize.width(), 0.0);
1182 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
1184 hscrollbar->setPageStep(areaSize.width() / 2);
1185 hscrollbar->setSingleStep(major_tick_distance);
1187 updating_scroll_ = true;
1189 if (length < MaxScrollValue) {
1190 hscrollbar->setRange(0, length);
1191 hscrollbar->setSliderPosition(offset.convert_to<double>());
1193 hscrollbar->setRange(0, MaxScrollValue);
1194 hscrollbar->setSliderPosition(
1195 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
1198 updating_scroll_ = false;
1200 // Set the vertical scrollbar
1201 vscrollbar->setPageStep(areaSize.height());
1202 vscrollbar->setSingleStep(areaSize.height() / 8);
1204 const pair<int, int> extents = v_extents();
1206 // Don't change the scrollbar range if there are no traces
1207 if (extents.first != extents.second)
1208 vscrollbar->setRange(extents.first - areaSize.height(),
1211 if (scroll_needs_defaults_) {
1212 set_scroll_default();
1213 scroll_needs_defaults_ = false;
1217 void View::reset_scroll()
1219 scrollarea_->verticalScrollBar()->setRange(0, 0);
1222 void View::set_scroll_default()
1226 const QSize areaSize = viewport_->size();
1228 const pair<int, int> extents = v_extents();
1229 const int trace_height = extents.second - extents.first;
1231 // Do all traces fit in the view?
1232 if (areaSize.height() >= trace_height)
1233 // Center all traces vertically
1234 set_v_offset(extents.first -
1235 ((areaSize.height() - trace_height) / 2));
1237 // Put the first trace at the top, letting the bottom ones overflow
1238 set_v_offset(extents.first);
1241 void View::determine_if_header_was_shrunk()
1243 const int header_pane_width =
1244 splitter_->sizes().front(); // clazy:exclude=detaching-temporary
1246 // Allow for a slight margin of error so that we also accept
1247 // slight differences when e.g. a label name change increased
1248 // the overall width
1249 header_was_shrunk_ = (header_pane_width < (header_width() - 10));
1252 void View::resize_header_to_fit()
1254 // Setting the maximum width of the header widget doesn't work as
1255 // expected because the splitter would allow the user to make the
1256 // pane wider than that, creating empty space as a result.
1257 // To make this work, we stricly enforce the maximum width by
1258 // expanding the header unless the user shrunk it on purpose.
1259 // As we're then setting the width of the header pane, we set the
1260 // splitter to the maximum allowed position.
1262 int splitter_area_width = 0;
1263 for (int w : splitter_->sizes()) // clazy:exclude=range-loop
1264 splitter_area_width += w;
1266 // Make sure the header has enough horizontal space to show all labels fully
1267 QList<int> pane_sizes;
1268 pane_sizes.push_back(header_->extended_size_hint().width());
1269 pane_sizes.push_back(splitter_area_width - header_->extended_size_hint().width());
1270 splitter_->setSizes(pane_sizes);
1273 void View::update_layout()
1278 TraceTreeItemOwner* View::find_prevalent_trace_group(
1279 const shared_ptr<sigrok::ChannelGroup> &group,
1280 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1285 unordered_set<TraceTreeItemOwner*> owners;
1286 vector<TraceTreeItemOwner*> owner_list;
1288 // Make a set and a list of all the owners
1289 for (const auto& channel : group->channels()) {
1290 for (auto& entry : signal_map) {
1291 if (entry.first->channel() == channel) {
1292 TraceTreeItemOwner *const o = (entry.second)->owner();
1293 owner_list.push_back(o);
1299 // Iterate through the list of owners, and find the most prevalent
1300 size_t max_prevalence = 0;
1301 TraceTreeItemOwner *prevalent_owner = nullptr;
1302 for (TraceTreeItemOwner *owner : owners) {
1303 const size_t prevalence = count_if(
1304 owner_list.begin(), owner_list.end(),
1305 [&](TraceTreeItemOwner *o) { return o == owner; });
1306 if (prevalence > max_prevalence) {
1307 max_prevalence = prevalence;
1308 prevalent_owner = owner;
1312 return prevalent_owner;
1315 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
1316 const vector< shared_ptr<sigrok::Channel> > &channels,
1317 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1319 set< shared_ptr<Trace> > &add_list)
1321 vector< shared_ptr<Trace> > filtered_traces;
1323 for (const auto& channel : channels) {
1324 for (auto& entry : signal_map) {
1325 if (entry.first->channel() == channel) {
1326 shared_ptr<Trace> trace = entry.second;
1327 const auto list_iter = add_list.find(trace);
1328 if (list_iter == add_list.end())
1331 filtered_traces.push_back(trace);
1332 add_list.erase(list_iter);
1337 return filtered_traces;
1340 void View::determine_time_unit()
1342 // Check whether we know the sample rate and hence can use time as the unit
1343 if (time_unit_ == util::TimeUnit::Samples) {
1344 // Check all signals but...
1345 for (const shared_ptr<Signal>& signal : signals_) {
1346 const shared_ptr<SignalData> data = signal->data();
1348 // ...only check first segment of each
1349 const vector< shared_ptr<Segment> > segments = data->segments();
1350 if (!segments.empty())
1351 if (segments[0]->samplerate()) {
1352 set_time_unit(util::TimeUnit::Time);
1359 bool View::eventFilter(QObject *object, QEvent *event)
1361 const QEvent::Type type = event->type();
1362 if (type == QEvent::MouseMove) {
1365 hover_widget_ = qobject_cast<QWidget*>(object);
1367 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1368 if (object == viewport_)
1369 hover_point_ = mouse_event->pos();
1370 else if (object == ruler_)
1371 hover_point_ = mouse_event->pos();
1372 else if (object == header_)
1373 hover_point_ = QPoint(0, mouse_event->y());
1375 hover_point_ = QPoint(-1, -1);
1377 update_hover_point();
1379 } else if (type == QEvent::Leave) {
1380 hover_point_ = QPoint(-1, -1);
1381 update_hover_point();
1382 } else if (type == QEvent::Show) {
1384 // This is somewhat of a hack, unfortunately. We cannot use
1385 // set_v_offset() from within restore_settings() as the view
1386 // at that point is neither visible nor properly sized.
1387 // This is the least intrusive workaround I could come up
1388 // with: set the vertical offset (or scroll defaults) when
1389 // the view is shown, which happens after all widgets were
1390 // resized to their final sizes.
1393 if (settings_restored_)
1394 determine_if_header_was_shrunk();
1396 resize_header_to_fit();
1398 if (scroll_needs_defaults_) {
1399 set_scroll_default();
1400 scroll_needs_defaults_ = false;
1403 if (saved_v_offset_) {
1404 set_v_offset(saved_v_offset_);
1405 saved_v_offset_ = 0;
1409 return QObject::eventFilter(object, event);
1412 void View::contextMenuEvent(QContextMenuEvent *event)
1414 QPoint pos = event->pos() - QPoint(0, ruler_->sizeHint().height());
1416 const shared_ptr<ViewItem> r = viewport_->get_mouse_over_item(pos);
1420 QMenu *menu = r->create_view_context_menu(this, pos);
1422 menu->popup(event->globalPos());
1425 void View::resizeEvent(QResizeEvent* event)
1427 // Only adjust the top margin if we shrunk vertically
1428 if (event->size().height() < event->oldSize().height())
1429 adjust_top_margin();
1434 void View::update_hover_point()
1436 // Determine signal that the mouse cursor is hovering over
1437 signal_under_mouse_cursor_.reset();
1438 if (hover_widget_ == this) {
1439 for (const shared_ptr<Signal>& s : signals_) {
1440 const pair<int, int> extents = s->v_extents();
1441 const int top = s->get_visual_y() + extents.first;
1442 const int btm = s->get_visual_y() + extents.second;
1443 if ((hover_point_.y() >= top) && (hover_point_.y() <= btm)
1444 && s->base()->enabled())
1445 signal_under_mouse_cursor_ = s;
1449 // Update all trace tree items
1450 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1451 list_by_type<TraceTreeItem>());
1452 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1453 r->hover_point_changed(hover_point_);
1455 // Notify any other listeners
1456 hover_point_changed(hover_widget_, hover_point_);
1459 void View::row_item_appearance_changed(bool label, bool content)
1464 viewport_->update();
1467 void View::time_item_appearance_changed(bool label, bool content)
1472 // Make sure the header pane width is updated, too
1477 viewport_->update();
1480 void View::extents_changed(bool horz, bool vert)
1483 (horz ? TraceTreeItemHExtentsChanged : 0) |
1484 (vert ? TraceTreeItemVExtentsChanged : 0);
1486 lazy_event_handler_.stop();
1487 lazy_event_handler_.start();
1490 void View::on_signal_name_changed()
1492 if (!header_was_shrunk_)
1493 resize_header_to_fit();
1496 void View::on_splitter_moved()
1498 // The header can only shrink when the splitter is moved manually
1499 determine_if_header_was_shrunk();
1501 if (!header_was_shrunk_)
1502 resize_header_to_fit();
1505 void View::on_zoom_in_shortcut_triggered()
1510 void View::on_zoom_out_shortcut_triggered()
1515 void View::on_scroll_to_start_shortcut_triggered()
1520 void View::on_scroll_to_end_shortcut_triggered()
1522 set_h_offset(get_h_scrollbar_maximum());
1525 void View::h_scroll_value_changed(int value)
1527 if (updating_scroll_)
1530 // Disable sticky scrolling when user moves the horizontal scroll bar
1531 // during a running acquisition
1532 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1533 sticky_scrolling_ = false;
1534 sticky_scrolling_changed(false);
1537 const int range = scrollarea_->horizontalScrollBar()->maximum();
1538 if (range < MaxScrollValue)
1539 set_offset(scale_ * value);
1543 get_scroll_layout(length, offset);
1544 set_offset(scale_ * length * value / MaxScrollValue);
1548 viewport_->update();
1551 void View::v_scroll_value_changed()
1554 viewport_->update();
1557 void View::signals_changed()
1559 using sigrok::Channel;
1561 vector< shared_ptr<Channel> > channels;
1562 shared_ptr<sigrok::Device> sr_dev;
1563 bool signals_added_or_removed = false;
1565 // Do we need to set the vertical scrollbar to its default position later?
1566 // We do if there are no traces, i.e. the scroll bar has no range set
1567 bool reset_scrollbar =
1568 (scrollarea_->verticalScrollBar()->minimum() ==
1569 scrollarea_->verticalScrollBar()->maximum());
1571 if (!session_.device()) {
1575 sr_dev = session_.device()->device();
1577 channels = sr_dev->channels();
1580 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1582 // Make a list of traces that are being added, and a list of traces
1583 // that are being removed
1584 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1585 const set<shared_ptr<Trace>> prev_traces(
1586 prev_trace_list.begin(), prev_trace_list.end());
1588 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1590 #ifdef ENABLE_DECODE
1591 traces.insert(decode_traces_.begin(), decode_traces_.end());
1594 set< shared_ptr<Trace> > add_traces;
1595 set_difference(traces.begin(), traces.end(),
1596 prev_traces.begin(), prev_traces.end(),
1597 inserter(add_traces, add_traces.begin()));
1599 set< shared_ptr<Trace> > remove_traces;
1600 set_difference(prev_traces.begin(), prev_traces.end(),
1601 traces.begin(), traces.end(),
1602 inserter(remove_traces, remove_traces.begin()));
1604 // Make a look-up table of sigrok Channels to pulseview Signals
1605 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1607 for (const shared_ptr<Signal>& sig : signals_)
1608 signal_map[sig->base()] = sig;
1610 // Populate channel groups
1612 for (auto& entry : sr_dev->channel_groups()) {
1613 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1615 if (group->channels().size() <= 1)
1618 // Find best trace group to add to
1619 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1622 // If there is no trace group, create one
1623 shared_ptr<TraceGroup> new_trace_group;
1625 new_trace_group.reset(new TraceGroup());
1626 owner = new_trace_group.get();
1629 // Extract traces for the trace group, removing them from
1631 const vector< shared_ptr<Trace> > new_traces_in_group =
1632 extract_new_traces_for_channels(group->channels(),
1633 signal_map, add_traces);
1635 // Add the traces to the group
1636 const pair<int, int> prev_v_extents = owner->v_extents();
1637 int offset = prev_v_extents.second - prev_v_extents.first;
1638 for (const shared_ptr<Trace>& trace : new_traces_in_group) {
1640 owner->add_child_item(trace);
1642 const pair<int, int> extents = trace->v_extents();
1643 if (trace->enabled())
1644 offset += -extents.first;
1645 trace->force_to_v_offset(offset);
1646 if (trace->enabled())
1647 offset += extents.second;
1650 if (new_trace_group) {
1651 // Assign proper vertical offsets to each channel in the group
1652 new_trace_group->restack_items();
1654 // If this is a new group, enqueue it in the new top level
1656 if (!new_traces_in_group.empty())
1657 new_top_level_items.push_back(new_trace_group);
1661 // Enqueue the remaining logic channels in a group
1662 vector< shared_ptr<Channel> > logic_channels;
1663 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1664 [](const shared_ptr<Channel>& c) {
1665 return c->type() == sigrok::ChannelType::LOGIC; });
1667 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1668 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1670 if (non_grouped_logic_signals.size() > 0) {
1671 const shared_ptr<TraceGroup> non_grouped_trace_group(
1672 make_shared<TraceGroup>());
1673 for (const shared_ptr<Trace>& trace : non_grouped_logic_signals)
1674 non_grouped_trace_group->add_child_item(trace);
1676 non_grouped_trace_group->restack_items();
1677 new_top_level_items.push_back(non_grouped_trace_group);
1680 // Enqueue the remaining channels as free ungrouped traces
1681 const vector< shared_ptr<Trace> > new_top_level_signals =
1682 extract_new_traces_for_channels(channels, signal_map, add_traces);
1683 new_top_level_items.insert(new_top_level_items.end(),
1684 new_top_level_signals.begin(), new_top_level_signals.end());
1686 // Enqueue any remaining traces i.e. decode traces
1687 new_top_level_items.insert(new_top_level_items.end(),
1688 add_traces.begin(), add_traces.end());
1690 // Remove any removed traces
1691 for (const shared_ptr<Trace>& trace : remove_traces) {
1692 TraceTreeItemOwner *const owner = trace->owner();
1694 owner->remove_child_item(trace);
1695 signals_added_or_removed = true;
1698 // Remove any empty trace groups
1699 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1700 if (group->child_items().size() == 0) {
1701 remove_child_item(group);
1705 // Add and position the pending top levels items
1706 int offset = v_extents().second;
1707 for (auto item : new_top_level_items) {
1708 add_child_item(item);
1710 // Position the item after the last item or at the top if there is none
1711 const pair<int, int> extents = item->v_extents();
1713 if (item->enabled())
1714 offset += -extents.first;
1716 item->force_to_v_offset(offset);
1718 if (item->enabled())
1719 offset += extents.second;
1720 signals_added_or_removed = true;
1724 if (signals_added_or_removed && !header_was_shrunk_)
1725 resize_header_to_fit();
1730 viewport_->update();
1732 if (reset_scrollbar)
1733 set_scroll_default();
1736 void View::capture_state_updated(int state)
1738 GlobalSettings settings;
1740 if (state == Session::Running) {
1741 set_time_unit(util::TimeUnit::Samples);
1743 trigger_markers_.clear();
1744 set_zero_position(0);
1746 scale_at_acq_start_ = scale_;
1747 offset_at_acq_start_ = offset_;
1749 // Activate "always zoom to fit" if the setting is enabled and we're
1750 // the main view of this session (other trace views may be used for
1751 // zooming and we don't want to mess them up)
1752 bool state = settings.value(GlobalSettings::Key_View_ZoomToFitDuringAcq).toBool();
1753 if (is_main_view_ && state) {
1754 always_zoom_to_fit_ = true;
1755 always_zoom_to_fit_changed(always_zoom_to_fit_);
1758 // Enable sticky scrolling if the setting is enabled
1759 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
1761 // Reset all traces to segment 0
1762 current_segment_ = 0;
1763 set_current_segment(current_segment_);
1766 if (state == Session::Stopped) {
1767 // After acquisition has stopped we need to re-calculate the ticks once
1768 // as it's otherwise done when the user pans or zooms, which is too late
1769 calculate_tick_spacing();
1771 // Reset "always zoom to fit", the acquisition has stopped
1772 if (always_zoom_to_fit_) {
1773 // Perform a final zoom-to-fit before disabling
1774 zoom_fit(always_zoom_to_fit_);
1775 always_zoom_to_fit_ = false;
1776 always_zoom_to_fit_changed(always_zoom_to_fit_);
1779 bool zoom_to_fit_after_acq =
1780 settings.value(GlobalSettings::Key_View_ZoomToFitAfterAcq).toBool();
1782 // Only perform zoom-to-fit if the user hasn't altered the viewport and
1783 // we didn't restore settings in the meanwhile
1784 if (zoom_to_fit_after_acq &&
1785 !suppress_zoom_to_fit_after_acq_ &&
1786 (scale_ == scale_at_acq_start_) &&
1787 (offset_ == offset_at_acq_start_))
1788 zoom_fit(false); // We're stopped, so the GUI state doesn't matter
1790 suppress_zoom_to_fit_after_acq_ = false;
1794 void View::on_new_segment(int new_segment_id)
1796 on_segment_changed(new_segment_id);
1799 void View::on_segment_completed(int segment_id)
1801 on_segment_changed(segment_id);
1804 void View::on_segment_changed(int segment)
1806 switch (segment_display_mode_) {
1807 case Trace::ShowLastSegmentOnly:
1808 case Trace::ShowSingleSegmentOnly:
1809 set_current_segment(segment);
1812 case Trace::ShowLastCompleteSegmentOnly:
1813 // Only update if all segments are complete
1814 if (session_.all_segments_complete(segment))
1815 set_current_segment(segment);
1818 case Trace::ShowAllSegments:
1819 case Trace::ShowAccumulatedIntensity:
1825 void View::on_settingViewTriggerIsZeroTime_changed(const QVariant new_value)
1827 if (new_value.toBool()) {
1828 // The first trigger for this segment is used as the zero position
1829 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
1830 if (triggers.size() > 0)
1831 set_zero_position(triggers.front());
1833 reset_zero_position();
1836 void View::perform_delayed_view_update()
1838 if (always_zoom_to_fit_) {
1840 } else if (sticky_scrolling_) {
1841 // Make right side of the view sticky
1844 get_scroll_layout(length, offset);
1846 const QSize areaSize = viewport_->size();
1847 length = max(length - areaSize.width(), 0.0);
1849 set_offset(scale_ * length);
1852 determine_time_unit();
1855 viewport_->update();
1858 void View::process_sticky_events()
1860 if (sticky_events_ & TraceTreeItemHExtentsChanged)
1862 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
1863 restack_all_trace_tree_items();
1867 // Clear the sticky events
1871 } // namespace trace
1872 } // namespace views