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 grab_ruler_left_shortcut_ = new QShortcut(QKeySequence(Qt::Key_1), this,
232 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
233 connect(grab_ruler_left_shortcut_, &QShortcut::activated,
234 this, [=]{on_grab_ruler(1);});
235 grab_ruler_left_shortcut_->setAutoRepeat(false);
237 grab_ruler_right_shortcut_ = new QShortcut(QKeySequence(Qt::Key_2), this,
238 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
239 connect(grab_ruler_right_shortcut_, &QShortcut::activated,
240 this, [=]{on_grab_ruler(2);});
241 grab_ruler_right_shortcut_->setAutoRepeat(false);
243 cancel_grab_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Escape), this,
244 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
245 connect(cancel_grab_shortcut_, &QShortcut::activated,
246 this, [=]{grabbed_widget_ = nullptr;});
247 cancel_grab_shortcut_->setAutoRepeat(false);
249 // Trigger the initial event manually. The default device has signals
250 // which were created before this object came into being
253 // Make sure the transparent widgets are on the top
262 GlobalSettings::remove_change_handler(this);
265 ViewType View::get_type() const
267 return ViewTypeTrace;
270 void View::reset_view_state()
272 ViewBase::reset_view_state();
274 segment_display_mode_ = Trace::ShowLastSegmentOnly;
275 segment_selectable_ = false;
279 updating_scroll_ = false;
280 settings_restored_ = false;
281 always_zoom_to_fit_ = false;
283 tick_prefix_ = pv::util::SIPrefix::yocto;
285 time_unit_ = util::TimeUnit::Time;
286 show_cursors_ = false;
287 cursors_ = make_shared<CursorPair>(*this);
288 next_flag_text_ = 'A';
289 trigger_markers_.clear();
290 hover_widget_ = nullptr;
291 grabbed_widget_ = nullptr;
292 hover_point_ = QPoint(-1, -1);
293 scroll_needs_defaults_ = true;
295 scale_at_acq_start_ = 0;
296 offset_at_acq_start_ = 0;
297 suppress_zoom_to_fit_after_acq_ = false;
299 show_cursors_ = false;
300 cursor_state_changed(show_cursors_);
303 // Update the zoom state
304 calculate_tick_spacing();
306 // Make sure the standard bar's segment selector is in sync
307 set_segment_display_mode(segment_display_mode_);
310 Session& View::session()
315 const Session& View::session() const
320 unordered_set< shared_ptr<Signal> > View::signals() const
325 shared_ptr<Signal> View::get_signal_by_signalbase(shared_ptr<data::SignalBase> base) const
327 shared_ptr<Signal> ret_val;
329 for (const shared_ptr<Signal>& s : signals_)
330 if (s->base() == base) {
338 void View::clear_signals()
340 ViewBase::clear_signals();
344 void View::add_signal(const shared_ptr<Signal> signal)
346 ViewBase::add_signalbase(signal->base());
347 signals_.insert(signal);
349 signal->set_segment_display_mode(segment_display_mode_);
350 signal->set_current_segment(current_segment_);
352 connect(signal->base().get(), SIGNAL(name_changed(const QString&)),
353 this, SLOT(on_signal_name_changed()));
357 void View::clear_decode_signals()
359 ViewBase::clear_decode_signals();
360 decode_traces_.clear();
363 void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
365 ViewBase::add_decode_signal(signal);
367 shared_ptr<DecodeTrace> d(
368 new DecodeTrace(session_, signal, decode_traces_.size()));
369 decode_traces_.push_back(d);
371 d->set_segment_display_mode(segment_display_mode_);
372 d->set_current_segment(current_segment_);
374 connect(signal.get(), SIGNAL(name_changed(const QString&)),
375 this, SLOT(on_signal_name_changed()));
378 void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
380 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
381 if ((*i)->base() == signal) {
382 decode_traces_.erase(i);
387 ViewBase::remove_decode_signal(signal);
391 shared_ptr<Signal> View::get_signal_under_mouse_cursor() const
393 return signal_under_mouse_cursor_;
401 const View* View::view() const
406 Viewport* View::viewport()
411 const Viewport* View::viewport() const
416 QAbstractScrollArea* View::scrollarea() const
421 const Ruler* View::ruler() const
426 void View::save_settings(QSettings &settings) const
428 settings.setValue("scale", scale_);
429 settings.setValue("v_offset",
430 scrollarea_->verticalScrollBar()->sliderPosition());
432 settings.setValue("splitter_state", splitter_->saveState());
433 settings.setValue("segment_display_mode", segment_display_mode_);
437 boost::archive::text_oarchive oa(ss);
438 oa << boost::serialization::make_nvp("offset", offset_);
439 settings.setValue("offset", QString::fromStdString(ss.str()));
442 for (const shared_ptr<Signal>& signal : signals_) {
443 settings.beginGroup(signal->base()->internal_name());
444 signal->save_settings(settings);
449 void View::restore_settings(QSettings &settings)
451 // Note: It is assumed that this function is only called once,
452 // immediately after restoring a previous session.
454 if (settings.contains("scale"))
455 set_scale(settings.value("scale").toDouble());
457 if (settings.contains("offset")) {
458 util::Timestamp offset;
460 ss << settings.value("offset").toString().toStdString();
463 boost::archive::text_iarchive ia(ss);
464 ia >> boost::serialization::make_nvp("offset", offset);
465 // This also updates ruler_offset_
467 } catch (boost::archive::archive_exception&) {
468 qDebug() << "Could not restore the view offset";
472 if (settings.contains("splitter_state"))
473 splitter_->restoreState(settings.value("splitter_state").toByteArray());
475 if (settings.contains("segment_display_mode"))
476 set_segment_display_mode(
477 (Trace::SegmentDisplayMode)(settings.value("segment_display_mode").toInt()));
479 for (shared_ptr<Signal> signal : signals_) {
480 settings.beginGroup(signal->base()->internal_name());
481 signal->restore_settings(settings);
485 if (settings.contains("v_offset")) {
486 saved_v_offset_ = settings.value("v_offset").toInt();
487 set_v_offset(saved_v_offset_);
488 scroll_needs_defaults_ = false;
489 // Note: see eventFilter() for additional information
492 settings_restored_ = true;
493 suppress_zoom_to_fit_after_acq_ = true;
495 // Update the ruler so that it uses the new scale
496 calculate_tick_spacing();
499 vector< shared_ptr<TimeItem> > View::time_items() const
501 const vector<shared_ptr<Flag>> f(flags());
502 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
505 items.push_back(cursors_);
506 items.push_back(cursors_->first());
507 items.push_back(cursors_->second());
510 for (auto& trigger_marker : trigger_markers_)
511 items.push_back(trigger_marker);
516 double View::scale() const
521 void View::set_scale(double scale)
523 if (scale_ != scale) {
529 void View::set_offset(const pv::util::Timestamp& offset, bool force_update)
531 if ((offset_ != offset) || force_update) {
533 ruler_offset_ = offset_ + zero_offset_;
538 const Timestamp& View::offset() const
543 const Timestamp& View::ruler_offset() const
545 return ruler_offset_;
548 void View::set_zero_position(const pv::util::Timestamp& position)
550 zero_offset_ = -position;
552 // Force an immediate update of the offsets
553 set_offset(offset_, true);
557 void View::reset_zero_position()
561 // Force an immediate update of the offsets
562 set_offset(offset_, true);
566 pv::util::Timestamp View::zero_offset() const
571 int View::owner_visual_v_offset() const
573 return -scrollarea_->verticalScrollBar()->sliderPosition();
576 void View::set_v_offset(int offset)
578 scrollarea_->verticalScrollBar()->setSliderPosition(offset);
583 void View::set_h_offset(int offset)
585 scrollarea_->horizontalScrollBar()->setSliderPosition(offset);
590 int View::get_h_scrollbar_maximum() const
592 return scrollarea_->horizontalScrollBar()->maximum();
595 unsigned int View::depth() const
600 uint32_t View::current_segment() const
602 return current_segment_;
605 pv::util::SIPrefix View::tick_prefix() const
610 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
612 if (tick_prefix_ != tick_prefix) {
613 tick_prefix_ = tick_prefix;
614 tick_prefix_changed();
618 unsigned int View::tick_precision() const
620 return tick_precision_;
623 void View::set_tick_precision(unsigned tick_precision)
625 if (tick_precision_ != tick_precision) {
626 tick_precision_ = tick_precision;
627 tick_precision_changed();
631 const pv::util::Timestamp& View::tick_period() const
636 unsigned int View::minor_tick_count() const
638 return minor_tick_count_;
641 void View::set_tick_period(const pv::util::Timestamp& tick_period)
643 if (tick_period_ != tick_period) {
644 tick_period_ = tick_period;
645 tick_period_changed();
649 TimeUnit View::time_unit() const
654 void View::set_time_unit(pv::util::TimeUnit time_unit)
656 if (time_unit_ != time_unit) {
657 time_unit_ = time_unit;
662 void View::set_current_segment(uint32_t segment_id)
664 current_segment_ = segment_id;
666 for (const shared_ptr<Signal>& signal : signals_)
667 signal->set_current_segment(current_segment_);
669 for (shared_ptr<DecodeTrace>& dt : decode_traces_)
670 dt->set_current_segment(current_segment_);
673 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
675 trigger_markers_.clear();
676 for (util::Timestamp timestamp : triggers)
677 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, timestamp));
679 // When enabled, the first trigger for this segment is used as the zero position
680 GlobalSettings settings;
681 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
683 if (trigger_is_zero_time && (triggers.size() > 0))
684 set_zero_position(triggers.front());
688 segment_changed(segment_id);
691 bool View::segment_is_selectable() const
693 return segment_selectable_;
696 Trace::SegmentDisplayMode View::segment_display_mode() const
698 return segment_display_mode_;
701 void View::set_segment_display_mode(Trace::SegmentDisplayMode mode)
703 segment_display_mode_ = mode;
705 for (const shared_ptr<Signal>& signal : signals_)
706 signal->set_segment_display_mode(mode);
708 uint32_t last_segment = session_.get_segment_count() - 1;
711 case Trace::ShowLastSegmentOnly:
712 if (current_segment_ != last_segment)
713 set_current_segment(last_segment);
716 case Trace::ShowLastCompleteSegmentOnly:
717 // Do nothing if we only have one segment so far
718 if (last_segment > 0) {
719 // If the last segment isn't complete, the previous one must be
720 uint32_t segment_id =
721 (session_.all_segments_complete(last_segment)) ?
722 last_segment : last_segment - 1;
724 if (current_segment_ != segment_id)
725 set_current_segment(segment_id);
729 case Trace::ShowSingleSegmentOnly:
730 case Trace::ShowAllSegments:
731 case Trace::ShowAccumulatedIntensity:
733 // Current segment remains as-is
737 segment_selectable_ = true;
739 if ((mode == Trace::ShowAllSegments) || (mode == Trace::ShowAccumulatedIntensity))
740 segment_selectable_ = false;
744 segment_display_mode_changed((int)mode, segment_selectable_);
747 void View::zoom(double steps)
749 zoom(steps, viewport_->width() / 2);
752 void View::zoom(double steps, int offset)
754 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
757 void View::zoom_fit(bool gui_state)
759 // Act as one-shot when stopped, toggle along with the GUI otherwise
760 if (session_.get_capture_state() == Session::Stopped) {
761 always_zoom_to_fit_ = false;
762 always_zoom_to_fit_changed(false);
764 always_zoom_to_fit_ = gui_state;
765 always_zoom_to_fit_changed(gui_state);
768 const pair<Timestamp, Timestamp> extents = get_time_extents();
769 const Timestamp delta = extents.second - extents.first;
770 if (delta < Timestamp("1e-12"))
774 const int w = viewport_->width();
778 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
779 set_scale_offset(scale.convert_to<double>(), extents.first);
782 void View::set_scale_offset(double scale, const Timestamp& offset)
784 // Disable sticky scrolling / always zoom to fit when acquisition runs
785 // and user drags the viewport
786 if ((scale_ == scale) && (offset_ != offset) &&
787 (session_.get_capture_state() == Session::Running)) {
789 if (sticky_scrolling_) {
790 sticky_scrolling_ = false;
791 sticky_scrolling_changed(false);
794 if (always_zoom_to_fit_) {
795 always_zoom_to_fit_ = false;
796 always_zoom_to_fit_changed(false);
803 calculate_tick_spacing();
810 set< shared_ptr<SignalData> > View::get_visible_data() const
812 // Make a set of all the visible data objects
813 set< shared_ptr<SignalData> > visible_data;
814 for (const shared_ptr<Signal>& sig : signals_)
816 visible_data.insert(sig->data());
821 pair<Timestamp, Timestamp> View::get_time_extents() const
823 boost::optional<Timestamp> left_time, right_time;
824 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
825 for (const shared_ptr<SignalData>& d : visible_data) {
826 const vector< shared_ptr<Segment> > segments = d->segments();
827 for (const shared_ptr<Segment>& s : segments) {
828 double samplerate = s->samplerate();
829 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
831 const Timestamp start_time = s->start_time();
832 left_time = left_time ?
833 min(*left_time, start_time) :
835 right_time = right_time ?
836 max(*right_time, start_time + d->max_sample_count() / samplerate) :
837 start_time + d->max_sample_count() / samplerate;
841 if (!left_time || !right_time)
842 return make_pair(0, 0);
844 assert(*left_time < *right_time);
845 return make_pair(*left_time, *right_time);
848 bool View::colored_bg() const
853 bool View::cursors_shown() const
855 return show_cursors_;
858 void View::show_cursors(bool show)
860 if (show_cursors_ != show) {
861 show_cursors_ = show;
863 cursor_state_changed(show);
869 void View::set_cursors(pv::util::Timestamp& first, pv::util::Timestamp& second)
873 cursors_->first()->set_time(first);
874 cursors_->second()->set_time(second);
880 void View::center_cursors()
884 const double time_width = scale_ * viewport_->width();
885 cursors_->first()->set_time(offset_ + time_width * 0.4);
886 cursors_->second()->set_time(offset_ + time_width * 0.6);
892 shared_ptr<CursorPair> View::cursors() const
897 shared_ptr<Flag> View::add_flag(const Timestamp& time)
899 shared_ptr<Flag> flag =
900 make_shared<Flag>(*this, time, QString("%1").arg(next_flag_text_));
901 flags_.push_back(flag);
903 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
904 (next_flag_text_ + 1);
906 time_item_appearance_changed(true, true);
910 void View::remove_flag(shared_ptr<Flag> flag)
913 time_item_appearance_changed(true, true);
916 vector< shared_ptr<Flag> > View::flags() const
918 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
919 stable_sort(flags.begin(), flags.end(),
920 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
921 return a->time() < b->time();
927 const QPoint& View::hover_point() const
932 const QWidget* View::hover_widget() const
934 return hover_widget_;
937 int64_t View::get_nearest_level_change(const QPoint &p)
939 // Is snapping disabled?
940 if (snap_distance_ == 0)
944 entry_t(shared_ptr<Signal> s) :
945 signal(s), delta(numeric_limits<int64_t>::max()), sample(-1), is_dense(false) {}
946 shared_ptr<Signal> signal;
952 vector<entry_t> list;
954 // Create list of signals to consider
955 if (signal_under_mouse_cursor_)
956 list.emplace_back(signal_under_mouse_cursor_);
958 for (shared_ptr<Signal> s : signals_) {
962 list.emplace_back(s);
965 // Get data for listed signals
966 for (entry_t &e : list) {
967 // Calculate sample number from cursor position
968 const double samples_per_pixel = e.signal->base()->get_samplerate() * scale();
969 const int64_t x_offset = offset().convert_to<double>() / scale();
970 const int64_t sample_num = max(((x_offset + p.x()) * samples_per_pixel), 0.0);
972 vector<data::LogicSegment::EdgePair> edges =
973 e.signal->get_nearest_level_changes(sample_num);
979 const int64_t first_sample_delta = abs(sample_num - edges.front().first);
980 const int64_t first_delta = first_sample_delta / samples_per_pixel;
981 e.delta = first_delta;
982 e.sample = edges.front().first;
984 // Check second edge if available
985 if (edges.size() == 2) {
986 // Note: -1 because this is usually the right edge and sample points are left-aligned
987 const int64_t second_sample_delta = abs(sample_num - edges.back().first - 1);
988 const int64_t second_delta = second_sample_delta / samples_per_pixel;
990 // If both edges are too close, we mark this signal as being dense
991 if ((first_delta + second_delta) <= snap_distance_)
994 if (second_delta < first_delta) {
995 e.delta = second_delta;
996 e.sample = edges.back().first;
1001 // Look for the best match: non-dense first, then dense
1002 entry_t *match = nullptr;
1004 for (entry_t &e : list) {
1005 if (e.delta > snap_distance_ || e.is_dense)
1009 if (e.delta < match->delta)
1016 for (entry_t &e : list) {
1021 if (e.delta < match->delta)
1029 // Somewhat ugly hack to make TimeItem::drag_by() work
1030 signal_under_mouse_cursor_ = match->signal;
1032 return match->sample;
1038 void View::restack_all_trace_tree_items()
1040 // Make a list of owners that is sorted from deepest first
1041 const vector<shared_ptr<TraceTreeItem>> items(
1042 list_by_type<TraceTreeItem>());
1043 set< TraceTreeItemOwner* > owners;
1044 for (const auto &r : items)
1045 owners.insert(r->owner());
1046 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
1047 sort(sorted_owners.begin(), sorted_owners.end(),
1048 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
1049 return a->depth() > b->depth(); });
1051 // Restack the items recursively
1052 for (auto &o : sorted_owners)
1055 // Animate the items to their destination
1056 for (const auto &i : items)
1057 i->animate_to_layout_v_offset();
1060 int View::header_width() const
1062 return header_->extended_size_hint().width();
1065 void View::on_setting_changed(const QString &key, const QVariant &value)
1067 GlobalSettings settings;
1069 if (key == GlobalSettings::Key_View_ColoredBG) {
1070 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
1071 viewport_->update();
1074 if ((key == GlobalSettings::Key_View_ShowSamplingPoints) ||
1075 (key == GlobalSettings::Key_View_ShowAnalogMinorGrid))
1076 viewport_->update();
1078 if (key == GlobalSettings::Key_View_TriggerIsZeroTime)
1079 on_settingViewTriggerIsZeroTime_changed(value);
1081 if (key == GlobalSettings::Key_View_SnapDistance)
1082 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
1085 void View::trigger_event(int segment_id, util::Timestamp location)
1087 // TODO This doesn't work if we're showing multiple segments at once
1088 if ((uint32_t)segment_id != current_segment_)
1091 // Set zero location if the Key_View_TriggerIsZeroTime setting is set and
1092 // if this is the first trigger for this segment.
1093 GlobalSettings settings;
1094 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
1096 size_t trigger_count = session_.get_triggers(current_segment_).size();
1098 if (trigger_is_zero_time && trigger_count == 1)
1099 set_zero_position(location);
1101 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
1104 void View::get_scroll_layout(double &length, Timestamp &offset) const
1106 const pair<Timestamp, Timestamp> extents = get_time_extents();
1107 length = ((extents.second - extents.first) / scale_).convert_to<double>();
1108 offset = offset_ / scale_;
1111 void View::set_zoom(double scale, int offset)
1113 // Reset the "always zoom to fit" feature as the user changed the zoom
1114 always_zoom_to_fit_ = false;
1115 always_zoom_to_fit_changed(false);
1117 const Timestamp cursor_offset = offset_ + scale_ * offset;
1118 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
1119 const Timestamp new_offset = cursor_offset - new_scale * offset;
1120 set_scale_offset(new_scale.convert_to<double>(), new_offset);
1123 void View::calculate_tick_spacing()
1125 const double SpacingIncrement = 10.0f;
1126 const double MinValueSpacing = 40.0f;
1128 // Figure out the highest numeric value visible on a label
1129 const QSize areaSize = viewport_->size();
1130 const Timestamp max_time = max(fabs(offset_),
1131 fabs(offset_ + scale_ * areaSize.width()));
1133 double min_width = SpacingIncrement;
1134 double label_width, tick_period_width;
1136 QFontMetrics m(QApplication::font());
1138 // Copies of the member variables with the same name, used in the calculation
1139 // and written back afterwards, so that we don't emit signals all the time
1140 // during the calculation.
1141 pv::util::Timestamp tick_period = tick_period_;
1142 pv::util::SIPrefix tick_prefix = tick_prefix_;
1143 unsigned tick_precision = tick_precision_;
1146 const double min_period = scale_ * min_width;
1148 const int order = (int)floorf(log10f(min_period));
1149 const pv::util::Timestamp order_decimal =
1150 pow(pv::util::Timestamp(10), order);
1152 // Allow for a margin of error so that a scale unit of 1 can be used.
1153 // Otherwise, for a SU of 1 the tick period will almost always be below
1154 // the min_period by a small amount - and thus skipped in favor of 2.
1155 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
1156 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
1157 double tp_with_margin;
1158 unsigned int unit = 0;
1161 tp_with_margin = order_decimal.convert_to<double>() *
1162 (ScaleUnits[unit++] + tp_margin);
1163 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
1165 minor_tick_count_ = (unit == 2) ? 4 : 5;
1166 tick_period = order_decimal * ScaleUnits[unit - 1];
1167 tick_prefix = static_cast<pv::util::SIPrefix>(
1168 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
1170 // Precision is the number of fractional digits required, not
1171 // taking the prefix into account (and it must never be negative)
1172 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
1174 tick_period_width = (tick_period / scale_).convert_to<double>();
1176 const QString label_text = Ruler::format_time_with_distance(
1177 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
1179 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
1180 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
1183 min_width += SpacingIncrement;
1184 } while (tick_period_width < label_width);
1186 set_tick_period(tick_period);
1187 set_tick_prefix(tick_prefix);
1188 set_tick_precision(tick_precision);
1191 void View::adjust_top_margin()
1195 const QSize areaSize = viewport_->size();
1197 const pair<int, int> extents = v_extents();
1198 const int top_margin = owner_visual_v_offset() + extents.first;
1199 const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second;
1201 // Do we have empty space at the top while the last trace goes out of screen?
1202 if ((top_margin > 0) && (trace_bottom > areaSize.height())) {
1203 const int trace_height = extents.second - extents.first;
1205 // Center everything vertically if there is enough space
1206 if (areaSize.height() >= trace_height)
1207 set_v_offset(extents.first -
1208 ((areaSize.height() - trace_height) / 2));
1210 // Remove the top margin to make as many traces fit on screen as possible
1211 set_v_offset(extents.first);
1215 void View::update_scroll()
1218 QScrollBar *hscrollbar = scrollarea_->horizontalScrollBar();
1219 QScrollBar *vscrollbar = scrollarea_->verticalScrollBar();
1221 const QSize areaSize = viewport_->size();
1223 // Set the horizontal scroll bar
1226 get_scroll_layout(length, offset);
1227 length = max(length - areaSize.width(), 0.0);
1229 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
1231 hscrollbar->setPageStep(areaSize.width() / 2);
1232 hscrollbar->setSingleStep(major_tick_distance);
1234 updating_scroll_ = true;
1236 if (length < MaxScrollValue) {
1237 hscrollbar->setRange(0, length);
1238 hscrollbar->setSliderPosition(offset.convert_to<double>());
1240 hscrollbar->setRange(0, MaxScrollValue);
1241 hscrollbar->setSliderPosition(
1242 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
1245 updating_scroll_ = false;
1247 // Set the vertical scrollbar
1248 vscrollbar->setPageStep(areaSize.height());
1249 vscrollbar->setSingleStep(areaSize.height() / 8);
1251 const pair<int, int> extents = v_extents();
1253 // Don't change the scrollbar range if there are no traces
1254 if (extents.first != extents.second)
1255 vscrollbar->setRange(extents.first - areaSize.height(),
1258 if (scroll_needs_defaults_) {
1259 set_scroll_default();
1260 scroll_needs_defaults_ = false;
1264 void View::reset_scroll()
1266 scrollarea_->verticalScrollBar()->setRange(0, 0);
1269 void View::set_scroll_default()
1273 const QSize areaSize = viewport_->size();
1275 const pair<int, int> extents = v_extents();
1276 const int trace_height = extents.second - extents.first;
1278 // Do all traces fit in the view?
1279 if (areaSize.height() >= trace_height)
1280 // Center all traces vertically
1281 set_v_offset(extents.first -
1282 ((areaSize.height() - trace_height) / 2));
1284 // Put the first trace at the top, letting the bottom ones overflow
1285 set_v_offset(extents.first);
1288 void View::determine_if_header_was_shrunk()
1290 const int header_pane_width =
1291 splitter_->sizes().front(); // clazy:exclude=detaching-temporary
1293 // Allow for a slight margin of error so that we also accept
1294 // slight differences when e.g. a label name change increased
1295 // the overall width
1296 header_was_shrunk_ = (header_pane_width < (header_width() - 10));
1299 void View::resize_header_to_fit()
1301 // Setting the maximum width of the header widget doesn't work as
1302 // expected because the splitter would allow the user to make the
1303 // pane wider than that, creating empty space as a result.
1304 // To make this work, we stricly enforce the maximum width by
1305 // expanding the header unless the user shrunk it on purpose.
1306 // As we're then setting the width of the header pane, we set the
1307 // splitter to the maximum allowed position.
1309 int splitter_area_width = 0;
1310 for (int w : splitter_->sizes()) // clazy:exclude=range-loop
1311 splitter_area_width += w;
1313 // Make sure the header has enough horizontal space to show all labels fully
1314 QList<int> pane_sizes;
1315 pane_sizes.push_back(header_->extended_size_hint().width());
1316 pane_sizes.push_back(splitter_area_width - header_->extended_size_hint().width());
1317 splitter_->setSizes(pane_sizes);
1320 void View::update_layout()
1325 TraceTreeItemOwner* View::find_prevalent_trace_group(
1326 const shared_ptr<sigrok::ChannelGroup> &group,
1327 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1332 unordered_set<TraceTreeItemOwner*> owners;
1333 vector<TraceTreeItemOwner*> owner_list;
1335 // Make a set and a list of all the owners
1336 for (const auto& channel : group->channels()) {
1337 for (auto& entry : signal_map) {
1338 if (entry.first->channel() == channel) {
1339 TraceTreeItemOwner *const o = (entry.second)->owner();
1340 owner_list.push_back(o);
1346 // Iterate through the list of owners, and find the most prevalent
1347 size_t max_prevalence = 0;
1348 TraceTreeItemOwner *prevalent_owner = nullptr;
1349 for (TraceTreeItemOwner *owner : owners) {
1350 const size_t prevalence = count_if(
1351 owner_list.begin(), owner_list.end(),
1352 [&](TraceTreeItemOwner *o) { return o == owner; });
1353 if (prevalence > max_prevalence) {
1354 max_prevalence = prevalence;
1355 prevalent_owner = owner;
1359 return prevalent_owner;
1362 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
1363 const vector< shared_ptr<sigrok::Channel> > &channels,
1364 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1366 set< shared_ptr<Trace> > &add_list)
1368 vector< shared_ptr<Trace> > filtered_traces;
1370 for (const auto& channel : channels) {
1371 for (auto& entry : signal_map) {
1372 if (entry.first->channel() == channel) {
1373 shared_ptr<Trace> trace = entry.second;
1374 const auto list_iter = add_list.find(trace);
1375 if (list_iter == add_list.end())
1378 filtered_traces.push_back(trace);
1379 add_list.erase(list_iter);
1384 return filtered_traces;
1387 void View::determine_time_unit()
1389 // Check whether we know the sample rate and hence can use time as the unit
1390 if (time_unit_ == util::TimeUnit::Samples) {
1391 // Check all signals but...
1392 for (const shared_ptr<Signal>& signal : signals_) {
1393 const shared_ptr<SignalData> data = signal->data();
1395 // ...only check first segment of each
1396 const vector< shared_ptr<Segment> > segments = data->segments();
1397 if (!segments.empty())
1398 if (segments[0]->samplerate()) {
1399 set_time_unit(util::TimeUnit::Time);
1406 bool View::eventFilter(QObject *object, QEvent *event)
1408 const QEvent::Type type = event->type();
1410 if (type == QEvent::MouseMove) {
1413 hover_widget_ = qobject_cast<QWidget*>(object);
1415 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1416 if (object == viewport_)
1417 hover_point_ = mouse_event->pos();
1418 else if (object == ruler_)
1419 hover_point_ = mouse_event->pos();
1420 else if (object == header_)
1421 hover_point_ = QPoint(0, mouse_event->y());
1423 hover_point_ = QPoint(-1, -1);
1425 update_hover_point();
1427 if (grabbed_widget_) {
1428 int64_t nearest = get_nearest_level_change(hover_point_);
1429 pv::util::Timestamp mouse_time = offset_ + hover_point_.x() * scale_;
1431 if (nearest == -1) {
1432 grabbed_widget_->set_time(mouse_time);
1434 grabbed_widget_->set_time(nearest / get_signal_under_mouse_cursor()->base()->get_samplerate());
1438 } else if (type == QEvent::MouseButtonPress) {
1439 grabbed_widget_ = nullptr;
1441 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1442 if ((object == viewport_) && (mouse_event->button() & Qt::LeftButton)) {
1443 // Send event to all trace tree items
1444 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1445 list_by_type<TraceTreeItem>());
1446 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1447 r->mouse_left_press_event(mouse_event);
1449 } else if (type == QEvent::Leave) {
1450 hover_point_ = QPoint(-1, -1);
1451 update_hover_point();
1452 } else if (type == QEvent::Show) {
1454 // This is somewhat of a hack, unfortunately. We cannot use
1455 // set_v_offset() from within restore_settings() as the view
1456 // at that point is neither visible nor properly sized.
1457 // This is the least intrusive workaround I could come up
1458 // with: set the vertical offset (or scroll defaults) when
1459 // the view is shown, which happens after all widgets were
1460 // resized to their final sizes.
1463 if (settings_restored_)
1464 determine_if_header_was_shrunk();
1466 resize_header_to_fit();
1468 if (scroll_needs_defaults_) {
1469 set_scroll_default();
1470 scroll_needs_defaults_ = false;
1473 if (saved_v_offset_) {
1474 set_v_offset(saved_v_offset_);
1475 saved_v_offset_ = 0;
1479 return QObject::eventFilter(object, event);
1482 void View::contextMenuEvent(QContextMenuEvent *event)
1484 QPoint pos = event->pos() - QPoint(0, ruler_->sizeHint().height());
1486 const shared_ptr<ViewItem> r = viewport_->get_mouse_over_item(pos);
1490 QMenu *menu = r->create_view_context_menu(this, pos);
1492 menu->popup(event->globalPos());
1495 void View::resizeEvent(QResizeEvent* event)
1497 // Only adjust the top margin if we shrunk vertically
1498 if (event->size().height() < event->oldSize().height())
1499 adjust_top_margin();
1504 void View::update_hover_point()
1506 // Determine signal that the mouse cursor is hovering over
1507 signal_under_mouse_cursor_.reset();
1508 if (hover_widget_ == this) {
1509 for (const shared_ptr<Signal>& s : signals_) {
1510 const pair<int, int> extents = s->v_extents();
1511 const int top = s->get_visual_y() + extents.first;
1512 const int btm = s->get_visual_y() + extents.second;
1513 if ((hover_point_.y() >= top) && (hover_point_.y() <= btm)
1514 && s->base()->enabled())
1515 signal_under_mouse_cursor_ = s;
1519 // Update all trace tree items
1520 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1521 list_by_type<TraceTreeItem>());
1522 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1523 r->hover_point_changed(hover_point_);
1525 // Notify any other listeners
1526 hover_point_changed(hover_widget_, hover_point_);
1529 void View::row_item_appearance_changed(bool label, bool content)
1534 viewport_->update();
1537 void View::time_item_appearance_changed(bool label, bool content)
1542 // Make sure the header pane width is updated, too
1547 viewport_->update();
1550 void View::extents_changed(bool horz, bool vert)
1553 (horz ? TraceTreeItemHExtentsChanged : 0) |
1554 (vert ? TraceTreeItemVExtentsChanged : 0);
1556 lazy_event_handler_.stop();
1557 lazy_event_handler_.start();
1560 void View::on_signal_name_changed()
1562 if (!header_was_shrunk_)
1563 resize_header_to_fit();
1566 void View::on_splitter_moved()
1568 // The header can only shrink when the splitter is moved manually
1569 determine_if_header_was_shrunk();
1571 if (!header_was_shrunk_)
1572 resize_header_to_fit();
1575 void View::on_zoom_in_shortcut_triggered()
1580 void View::on_zoom_out_shortcut_triggered()
1585 void View::on_scroll_to_start_shortcut_triggered()
1590 void View::on_scroll_to_end_shortcut_triggered()
1592 set_h_offset(get_h_scrollbar_maximum());
1595 void View::h_scroll_value_changed(int value)
1597 if (updating_scroll_)
1600 // Disable sticky scrolling when user moves the horizontal scroll bar
1601 // during a running acquisition
1602 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1603 sticky_scrolling_ = false;
1604 sticky_scrolling_changed(false);
1607 const int range = scrollarea_->horizontalScrollBar()->maximum();
1608 if (range < MaxScrollValue)
1609 set_offset(scale_ * value);
1613 get_scroll_layout(length, offset);
1614 set_offset(scale_ * length * value / MaxScrollValue);
1618 viewport_->update();
1621 void View::v_scroll_value_changed()
1624 viewport_->update();
1627 void View::on_grab_ruler(int ruler_id)
1629 if (!cursors_shown()) {
1634 // Release the grabbed widget if its trigger hotkey was pressed twice
1636 grabbed_widget_ = (grabbed_widget_ == cursors_->first().get()) ?
1637 nullptr : cursors_->first().get();
1639 grabbed_widget_ = (grabbed_widget_ == cursors_->second().get()) ?
1640 nullptr : cursors_->second().get();
1642 if (grabbed_widget_)
1643 grabbed_widget_->set_time(ruler_->get_absolute_time_from_x_pos(
1644 mapFromGlobal(QCursor::pos()).x() - header_width()));
1647 void View::signals_changed()
1649 using sigrok::Channel;
1651 vector< shared_ptr<Channel> > channels;
1652 shared_ptr<sigrok::Device> sr_dev;
1653 bool signals_added_or_removed = false;
1655 // Do we need to set the vertical scrollbar to its default position later?
1656 // We do if there are no traces, i.e. the scroll bar has no range set
1657 bool reset_scrollbar =
1658 (scrollarea_->verticalScrollBar()->minimum() ==
1659 scrollarea_->verticalScrollBar()->maximum());
1661 if (!session_.device()) {
1665 sr_dev = session_.device()->device();
1667 channels = sr_dev->channels();
1670 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1672 // Make a list of traces that are being added, and a list of traces
1673 // that are being removed
1674 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1675 const set<shared_ptr<Trace>> prev_traces(
1676 prev_trace_list.begin(), prev_trace_list.end());
1678 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1680 #ifdef ENABLE_DECODE
1681 traces.insert(decode_traces_.begin(), decode_traces_.end());
1684 set< shared_ptr<Trace> > add_traces;
1685 set_difference(traces.begin(), traces.end(),
1686 prev_traces.begin(), prev_traces.end(),
1687 inserter(add_traces, add_traces.begin()));
1689 set< shared_ptr<Trace> > remove_traces;
1690 set_difference(prev_traces.begin(), prev_traces.end(),
1691 traces.begin(), traces.end(),
1692 inserter(remove_traces, remove_traces.begin()));
1694 // Make a look-up table of sigrok Channels to pulseview Signals
1695 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1697 for (const shared_ptr<Signal>& sig : signals_)
1698 signal_map[sig->base()] = sig;
1700 // Populate channel groups
1702 for (auto& entry : sr_dev->channel_groups()) {
1703 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1705 if (group->channels().size() <= 1)
1708 // Find best trace group to add to
1709 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1712 // If there is no trace group, create one
1713 shared_ptr<TraceGroup> new_trace_group;
1715 new_trace_group.reset(new TraceGroup());
1716 owner = new_trace_group.get();
1719 // Extract traces for the trace group, removing them from
1721 const vector< shared_ptr<Trace> > new_traces_in_group =
1722 extract_new_traces_for_channels(group->channels(),
1723 signal_map, add_traces);
1725 // Add the traces to the group
1726 const pair<int, int> prev_v_extents = owner->v_extents();
1727 int offset = prev_v_extents.second - prev_v_extents.first;
1728 for (const shared_ptr<Trace>& trace : new_traces_in_group) {
1730 owner->add_child_item(trace);
1732 const pair<int, int> extents = trace->v_extents();
1733 if (trace->enabled())
1734 offset += -extents.first;
1735 trace->force_to_v_offset(offset);
1736 if (trace->enabled())
1737 offset += extents.second;
1740 if (new_trace_group) {
1741 // Assign proper vertical offsets to each channel in the group
1742 new_trace_group->restack_items();
1744 // If this is a new group, enqueue it in the new top level
1746 if (!new_traces_in_group.empty())
1747 new_top_level_items.push_back(new_trace_group);
1751 // Enqueue the remaining logic channels in a group
1752 vector< shared_ptr<Channel> > logic_channels;
1753 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1754 [](const shared_ptr<Channel>& c) {
1755 return c->type() == sigrok::ChannelType::LOGIC; });
1757 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1758 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1760 if (non_grouped_logic_signals.size() > 0) {
1761 const shared_ptr<TraceGroup> non_grouped_trace_group(
1762 make_shared<TraceGroup>());
1763 for (const shared_ptr<Trace>& trace : non_grouped_logic_signals)
1764 non_grouped_trace_group->add_child_item(trace);
1766 non_grouped_trace_group->restack_items();
1767 new_top_level_items.push_back(non_grouped_trace_group);
1770 // Enqueue the remaining channels as free ungrouped traces
1771 const vector< shared_ptr<Trace> > new_top_level_signals =
1772 extract_new_traces_for_channels(channels, signal_map, add_traces);
1773 new_top_level_items.insert(new_top_level_items.end(),
1774 new_top_level_signals.begin(), new_top_level_signals.end());
1776 // Enqueue any remaining traces i.e. decode traces
1777 new_top_level_items.insert(new_top_level_items.end(),
1778 add_traces.begin(), add_traces.end());
1780 // Remove any removed traces
1781 for (const shared_ptr<Trace>& trace : remove_traces) {
1782 TraceTreeItemOwner *const owner = trace->owner();
1784 owner->remove_child_item(trace);
1785 signals_added_or_removed = true;
1788 // Remove any empty trace groups
1789 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1790 if (group->child_items().size() == 0) {
1791 remove_child_item(group);
1795 // Add and position the pending top levels items
1796 int offset = v_extents().second;
1797 for (auto item : new_top_level_items) {
1798 add_child_item(item);
1800 // Position the item after the last item or at the top if there is none
1801 const pair<int, int> extents = item->v_extents();
1803 if (item->enabled())
1804 offset += -extents.first;
1806 item->force_to_v_offset(offset);
1808 if (item->enabled())
1809 offset += extents.second;
1810 signals_added_or_removed = true;
1814 if (signals_added_or_removed && !header_was_shrunk_)
1815 resize_header_to_fit();
1820 viewport_->update();
1822 if (reset_scrollbar)
1823 set_scroll_default();
1826 void View::capture_state_updated(int state)
1828 GlobalSettings settings;
1830 if (state == Session::Running) {
1831 set_time_unit(util::TimeUnit::Samples);
1833 trigger_markers_.clear();
1834 set_zero_position(0);
1836 scale_at_acq_start_ = scale_;
1837 offset_at_acq_start_ = offset_;
1839 // Activate "always zoom to fit" if the setting is enabled and we're
1840 // the main view of this session (other trace views may be used for
1841 // zooming and we don't want to mess them up)
1842 bool state = settings.value(GlobalSettings::Key_View_ZoomToFitDuringAcq).toBool();
1843 if (is_main_view_ && state) {
1844 always_zoom_to_fit_ = true;
1845 always_zoom_to_fit_changed(always_zoom_to_fit_);
1848 // Enable sticky scrolling if the setting is enabled
1849 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
1851 // Reset all traces to segment 0
1852 current_segment_ = 0;
1853 set_current_segment(current_segment_);
1856 if (state == Session::Stopped) {
1857 // After acquisition has stopped we need to re-calculate the ticks once
1858 // as it's otherwise done when the user pans or zooms, which is too late
1859 calculate_tick_spacing();
1861 // Reset "always zoom to fit", the acquisition has stopped
1862 if (always_zoom_to_fit_) {
1863 // Perform a final zoom-to-fit before disabling
1864 zoom_fit(always_zoom_to_fit_);
1865 always_zoom_to_fit_ = false;
1866 always_zoom_to_fit_changed(always_zoom_to_fit_);
1869 bool zoom_to_fit_after_acq =
1870 settings.value(GlobalSettings::Key_View_ZoomToFitAfterAcq).toBool();
1872 // Only perform zoom-to-fit if the user hasn't altered the viewport and
1873 // we didn't restore settings in the meanwhile
1874 if (zoom_to_fit_after_acq &&
1875 !suppress_zoom_to_fit_after_acq_ &&
1876 (scale_ == scale_at_acq_start_) &&
1877 (offset_ == offset_at_acq_start_))
1878 zoom_fit(false); // We're stopped, so the GUI state doesn't matter
1880 suppress_zoom_to_fit_after_acq_ = false;
1884 void View::on_new_segment(int new_segment_id)
1886 on_segment_changed(new_segment_id);
1889 void View::on_segment_completed(int segment_id)
1891 on_segment_changed(segment_id);
1894 void View::on_segment_changed(int segment)
1896 switch (segment_display_mode_) {
1897 case Trace::ShowLastSegmentOnly:
1898 case Trace::ShowSingleSegmentOnly:
1899 set_current_segment(segment);
1902 case Trace::ShowLastCompleteSegmentOnly:
1903 // Only update if all segments are complete
1904 if (session_.all_segments_complete(segment))
1905 set_current_segment(segment);
1908 case Trace::ShowAllSegments:
1909 case Trace::ShowAccumulatedIntensity:
1915 void View::on_settingViewTriggerIsZeroTime_changed(const QVariant new_value)
1917 if (new_value.toBool()) {
1918 // The first trigger for this segment is used as the zero position
1919 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
1920 if (triggers.size() > 0)
1921 set_zero_position(triggers.front());
1923 reset_zero_position();
1926 void View::perform_delayed_view_update()
1928 if (always_zoom_to_fit_) {
1930 } else if (sticky_scrolling_) {
1931 // Make right side of the view sticky
1934 get_scroll_layout(length, offset);
1936 const QSize areaSize = viewport_->size();
1937 length = max(length - areaSize.width(), 0.0);
1939 set_offset(scale_ * length);
1942 determine_time_unit();
1945 viewport_->update();
1948 void View::process_sticky_events()
1950 if (sticky_events_ & TraceTreeItemHExtentsChanged)
1952 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
1953 restack_all_trace_tree_items();
1957 // Clear the sticky events
1961 } // namespace trace
1962 } // namespace views