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 <QApplication>
37 #include <QFontMetrics>
39 #include <QMouseEvent>
41 #include <QVBoxLayout>
43 #include <libsigrokcxx/libsigrokcxx.hpp>
45 #include "analogsignal.hpp"
47 #include "logicsignal.hpp"
50 #include "tracegroup.hpp"
51 #include "triggermarker.hpp"
53 #include "viewport.hpp"
55 #include "pv/metadata_obj.hpp"
56 #include "pv/data/logic.hpp"
57 #include "pv/data/logicsegment.hpp"
58 #include "pv/devices/device.hpp"
59 #include "pv/globalsettings.hpp"
60 #include "pv/session.hpp"
61 #include "pv/util.hpp"
64 #include "decodetrace.hpp"
67 using pv::data::SignalData;
68 using pv::data::Segment;
69 using pv::util::TimeUnit;
70 using pv::util::Timestamp;
72 using std::back_inserter;
78 using std::make_shared;
80 using std::numeric_limits;
83 using std::set_difference;
84 using std::shared_ptr;
85 using std::unordered_map;
86 using std::unordered_set;
93 const Timestamp View::MaxScale("1e9");
94 const Timestamp View::MinScale("1e-12");
96 const int View::MaxScrollValue = INT_MAX / 2;
98 /* Area at the top and bottom of the view that can't be scrolled out of sight */
99 const int View::ViewScrollMargin = 50;
101 const int View::ScaleUnits[3] = {1, 2, 5};
103 CustomScrollArea::CustomScrollArea(QWidget *parent) :
104 QAbstractScrollArea(parent)
108 bool CustomScrollArea::viewportEvent(QEvent *event)
110 switch (event->type()) {
112 case QEvent::MouseButtonPress:
113 case QEvent::MouseButtonRelease:
114 case QEvent::MouseButtonDblClick:
115 case QEvent::MouseMove:
117 case QEvent::TouchBegin:
118 case QEvent::TouchUpdate:
119 case QEvent::TouchEnd:
122 return QAbstractScrollArea::viewportEvent(event);
126 View::View(Session &session, bool is_main_view, QMainWindow *parent) :
127 ViewBase(session, is_main_view, parent),
129 // Note: Place defaults in View::reset_view_state(), not here
130 splitter_(new QSplitter()),
131 header_was_shrunk_(false), // The splitter remains unchanged after a reset, so this goes here
132 sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui()
133 scroll_needs_defaults_(true)
135 QVBoxLayout *root_layout = new QVBoxLayout(this);
136 root_layout->setContentsMargins(0, 0, 0, 0);
137 root_layout->addWidget(splitter_);
139 viewport_ = new Viewport(*this);
140 scrollarea_ = new CustomScrollArea(splitter_);
141 scrollarea_->setViewport(viewport_);
142 scrollarea_->setFrameShape(QFrame::NoFrame);
144 ruler_ = new Ruler(*this);
146 header_ = new Header(*this);
147 header_->setMinimumWidth(10); // So that the arrow tips show at least
149 // We put the header into a simple layout so that we can add the top margin,
150 // allowing us to make it line up with the bottom of the ruler
151 QWidget *header_container = new QWidget();
152 header_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
153 QVBoxLayout *header_layout = new QVBoxLayout(header_container);
154 header_layout->setContentsMargins(0, ruler_->sizeHint().height(), 0, 0);
155 header_layout->addWidget(header_);
157 // To let the ruler and scrollarea be on the same split pane, we need a layout
158 QWidget *trace_container = new QWidget();
159 trace_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
160 QVBoxLayout *trace_layout = new QVBoxLayout(trace_container);
161 trace_layout->setSpacing(0); // We don't want space between the ruler and scrollarea
162 trace_layout->setContentsMargins(0, 0, 0, 0);
163 trace_layout->addWidget(ruler_);
164 trace_layout->addWidget(scrollarea_);
166 splitter_->addWidget(header_container);
167 splitter_->addWidget(trace_container);
168 splitter_->setHandleWidth(1); // Don't show a visible rubber band
169 splitter_->setCollapsible(0, false); // Prevent the header from collapsing
170 splitter_->setCollapsible(1, false); // Prevent the traces from collapsing
171 splitter_->setStretchFactor(0, 0); // Prevent the panes from being resized
172 splitter_->setStretchFactor(1, 1); // when the entire view is resized
173 splitter_->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
175 viewport_->installEventFilter(this);
176 ruler_->installEventFilter(this);
177 header_->installEventFilter(this);
179 // Set up settings and event handlers
180 GlobalSettings settings;
181 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
182 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
184 GlobalSettings::add_change_handler(this);
186 // Set up metadata objects and event handlers
188 session_.metadata_obj_manager()->create_object(MetadataObjMainViewRange);
191 // Set up UI event handlers
192 connect(scrollarea_->horizontalScrollBar(), SIGNAL(valueChanged(int)),
193 this, SLOT(h_scroll_value_changed(int)));
194 connect(scrollarea_->verticalScrollBar(), SIGNAL(valueChanged(int)),
195 this, SLOT(v_scroll_value_changed()));
197 connect(header_, SIGNAL(selection_changed()),
198 ruler_, SLOT(clear_selection()));
199 connect(ruler_, SIGNAL(selection_changed()),
200 header_, SLOT(clear_selection()));
202 connect(header_, SIGNAL(selection_changed()),
203 this, SIGNAL(selection_changed()));
204 connect(ruler_, SIGNAL(selection_changed()),
205 this, SIGNAL(selection_changed()));
207 connect(splitter_, SIGNAL(splitterMoved(int, int)),
208 this, SLOT(on_splitter_moved()));
210 connect(&lazy_event_handler_, SIGNAL(timeout()),
211 this, SLOT(process_sticky_events()));
212 lazy_event_handler_.setSingleShot(true);
213 lazy_event_handler_.setInterval(1000 / ViewBase::MaxViewAutoUpdateRate);
215 // Set up local keyboard shortcuts
216 zoom_in_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Plus), this,
217 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
218 zoom_in_shortcut_->setAutoRepeat(false);
220 zoom_out_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Minus), this,
221 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
222 zoom_out_shortcut_->setAutoRepeat(false);
224 zoom_in_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Up), this,
225 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
226 zoom_out_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Down), this,
227 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
229 home_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Home), this,
230 SLOT(on_scroll_to_start_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
231 home_shortcut_->setAutoRepeat(false);
233 end_shortcut_ = new QShortcut(QKeySequence(Qt::Key_End), this,
234 SLOT(on_scroll_to_end_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
235 end_shortcut_->setAutoRepeat(false);
237 grab_ruler_left_shortcut_ = new QShortcut(QKeySequence(Qt::Key_1), this,
238 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
239 connect(grab_ruler_left_shortcut_, &QShortcut::activated,
240 this, [=]{on_grab_ruler(1);});
241 grab_ruler_left_shortcut_->setAutoRepeat(false);
243 grab_ruler_right_shortcut_ = new QShortcut(QKeySequence(Qt::Key_2), this,
244 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
245 connect(grab_ruler_right_shortcut_, &QShortcut::activated,
246 this, [=]{on_grab_ruler(2);});
247 grab_ruler_right_shortcut_->setAutoRepeat(false);
249 cancel_grab_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Escape), this,
250 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
251 connect(cancel_grab_shortcut_, &QShortcut::activated,
252 this, [=]{grabbed_widget_ = nullptr;});
253 cancel_grab_shortcut_->setAutoRepeat(false);
255 // Trigger the initial event manually. The default device has signals
256 // which were created before this object came into being
259 // Make sure the transparent widgets are on the top
268 GlobalSettings::remove_change_handler(this);
271 ViewType View::get_type() const
273 return ViewTypeTrace;
276 void View::reset_view_state()
278 ViewBase::reset_view_state();
280 segment_display_mode_ = Trace::ShowLastSegmentOnly;
281 segment_selectable_ = false;
286 custom_zero_offset_set_ = false;
287 updating_scroll_ = false;
288 settings_restored_ = false;
289 always_zoom_to_fit_ = false;
291 tick_prefix_ = pv::util::SIPrefix::yocto;
293 time_unit_ = util::TimeUnit::Time;
294 show_cursors_ = false;
295 cursors_ = make_shared<CursorPair>(*this);
296 next_flag_text_ = 'A';
297 trigger_markers_.clear();
298 hover_widget_ = nullptr;
299 grabbed_widget_ = nullptr;
300 hover_point_ = QPoint(-1, -1);
301 scroll_needs_defaults_ = true;
303 scale_at_acq_start_ = 0;
304 offset_at_acq_start_ = 0;
305 suppress_zoom_to_fit_after_acq_ = false;
307 show_cursors_ = false;
308 cursor_state_changed(show_cursors_);
311 // Update the zoom state
312 calculate_tick_spacing();
314 // Make sure the standard bar's segment selector is in sync
315 set_segment_display_mode(segment_display_mode_);
318 Session& View::session()
323 const Session& View::session() const
328 vector< shared_ptr<Signal> > View::signals() const
333 shared_ptr<Signal> View::get_signal_by_signalbase(shared_ptr<data::SignalBase> base) const
335 shared_ptr<Signal> ret_val;
337 for (const shared_ptr<Signal>& s : signals_)
338 if (s->base() == base) {
346 void View::clear_signals()
348 ViewBase::clear_signals();
352 void View::add_signal(const shared_ptr<Signal> signal)
354 ViewBase::add_signalbase(signal->base());
355 signals_.push_back(signal);
357 signal->set_segment_display_mode(segment_display_mode_);
358 signal->set_current_segment(current_segment_);
360 connect(signal->base().get(), SIGNAL(name_changed(const QString&)),
361 this, SLOT(on_signal_name_changed()));
365 void View::clear_decode_signals()
367 ViewBase::clear_decode_signals();
368 decode_traces_.clear();
371 void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
373 ViewBase::add_decode_signal(signal);
375 shared_ptr<DecodeTrace> d(
376 new DecodeTrace(session_, signal, decode_traces_.size()));
377 decode_traces_.push_back(d);
379 d->set_segment_display_mode(segment_display_mode_);
380 d->set_current_segment(current_segment_);
382 connect(signal.get(), SIGNAL(name_changed(const QString&)),
383 this, SLOT(on_signal_name_changed()));
386 void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
388 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
389 if ((*i)->base() == signal) {
390 decode_traces_.erase(i);
395 ViewBase::remove_decode_signal(signal);
399 shared_ptr<Signal> View::get_signal_under_mouse_cursor() const
401 return signal_under_mouse_cursor_;
409 const View* View::view() const
414 Viewport* View::viewport()
419 const Viewport* View::viewport() const
424 QAbstractScrollArea* View::scrollarea() const
429 const Ruler* View::ruler() const
434 void View::save_settings(QSettings &settings) const
436 settings.setValue("scale", scale_);
437 settings.setValue("v_offset",
438 scrollarea_->verticalScrollBar()->sliderPosition());
440 settings.setValue("splitter_state", splitter_->saveState());
441 settings.setValue("segment_display_mode", segment_display_mode_);
443 GlobalSettings::store_timestamp(settings, "offset", offset_);
445 if (custom_zero_offset_set_)
446 GlobalSettings::store_timestamp(settings, "zero_offset", -zero_offset_);
448 settings.remove("zero_offset");
450 for (const shared_ptr<Signal>& signal : signals_) {
451 settings.beginGroup(signal->base()->internal_name());
452 signal->save_settings(settings);
457 void View::restore_settings(QSettings &settings)
459 // Note: It is assumed that this function is only called once,
460 // immediately after restoring a previous session.
462 if (settings.contains("scale"))
463 set_scale(settings.value("scale").toDouble());
465 if (settings.contains("offset")) {
466 // This also updates ruler_offset_
467 set_offset(GlobalSettings::restore_timestamp(settings, "offset"));
470 if (settings.contains("zero_offset"))
471 set_zero_position(GlobalSettings::restore_timestamp(settings, "zero_offset"));
473 if (settings.contains("splitter_state"))
474 splitter_->restoreState(settings.value("splitter_state").toByteArray());
476 if (settings.contains("segment_display_mode"))
477 set_segment_display_mode(
478 (Trace::SegmentDisplayMode)(settings.value("segment_display_mode").toInt()));
480 for (shared_ptr<Signal> signal : signals_) {
481 settings.beginGroup(signal->base()->internal_name());
482 signal->restore_settings(settings);
486 if (settings.contains("v_offset")) {
487 saved_v_offset_ = settings.value("v_offset").toInt();
488 set_v_offset(saved_v_offset_);
489 scroll_needs_defaults_ = false;
490 // Note: see eventFilter() for additional information
493 settings_restored_ = true;
494 suppress_zoom_to_fit_after_acq_ = true;
496 // Update the ruler so that it uses the new scale
497 calculate_tick_spacing();
500 vector< shared_ptr<TimeItem> > View::time_items() const
502 const vector<shared_ptr<Flag>> f(flags());
503 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
506 items.push_back(cursors_);
507 items.push_back(cursors_->first());
508 items.push_back(cursors_->second());
511 for (auto& trigger_marker : trigger_markers_)
512 items.push_back(trigger_marker);
517 double View::scale() const
522 void View::set_scale(double scale)
524 if (scale_ != scale) {
530 void View::set_offset(const pv::util::Timestamp& offset, bool force_update)
532 if ((offset_ != offset) || force_update) {
534 ruler_offset_ = offset_ + zero_offset_;
536 const int w = viewport_->width();
538 const double samplerate = session_.get_samplerate();
539 // Note: sample_num = time * samplerate
540 // Note: samples_per_pixel = samplerate * scale
541 int64_t start_sample = (offset_ * samplerate).convert_to<int64_t>();
542 int64_t end_sample = (offset_ * samplerate).convert_to<int64_t>() +
543 (w * session_.get_samplerate() * scale_);
545 MetadataObject* md_obj =
546 session_.metadata_obj_manager()->find_object_by_type(MetadataObjMainViewRange);
547 md_obj->set_value(MetadataValueStartSample, QVariant((qlonglong)start_sample));
548 md_obj->set_value(MetadataValueEndSample, QVariant((qlonglong)end_sample));
555 const Timestamp& View::offset() const
560 const Timestamp& View::ruler_offset() const
562 return ruler_offset_;
565 void View::set_zero_position(const pv::util::Timestamp& position)
567 zero_offset_ = -position;
568 custom_zero_offset_set_ = true;
570 // Force an immediate update of the offsets
571 set_offset(offset_, true);
575 void View::reset_zero_position()
579 // When enabled, the first trigger for this segment is used as the zero position
580 GlobalSettings settings;
581 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
583 if (trigger_is_zero_time) {
584 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
586 if (triggers.size() > 0)
587 zero_offset_ = triggers.front();
590 custom_zero_offset_set_ = false;
592 // Force an immediate update of the offsets
593 set_offset(offset_, true);
597 pv::util::Timestamp View::zero_offset() const
602 int View::owner_visual_v_offset() const
604 return -scrollarea_->verticalScrollBar()->sliderPosition();
607 void View::set_v_offset(int offset)
609 scrollarea_->verticalScrollBar()->setSliderPosition(offset);
614 void View::set_h_offset(int offset)
616 scrollarea_->horizontalScrollBar()->setSliderPosition(offset);
621 int View::get_h_scrollbar_maximum() const
623 return scrollarea_->horizontalScrollBar()->maximum();
626 unsigned int View::depth() const
631 uint32_t View::current_segment() const
633 return current_segment_;
636 pv::util::SIPrefix View::tick_prefix() const
641 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
643 if (tick_prefix_ != tick_prefix) {
644 tick_prefix_ = tick_prefix;
645 tick_prefix_changed();
649 unsigned int View::tick_precision() const
651 return tick_precision_;
654 void View::set_tick_precision(unsigned tick_precision)
656 if (tick_precision_ != tick_precision) {
657 tick_precision_ = tick_precision;
658 tick_precision_changed();
662 const pv::util::Timestamp& View::tick_period() const
667 unsigned int View::minor_tick_count() const
669 return minor_tick_count_;
672 void View::set_tick_period(const pv::util::Timestamp& tick_period)
674 if (tick_period_ != tick_period) {
675 tick_period_ = tick_period;
676 tick_period_changed();
680 TimeUnit View::time_unit() const
685 void View::set_time_unit(pv::util::TimeUnit time_unit)
687 if (time_unit_ != time_unit) {
688 time_unit_ = time_unit;
693 void View::set_current_segment(uint32_t segment_id)
695 current_segment_ = segment_id;
697 for (const shared_ptr<Signal>& signal : signals_)
698 signal->set_current_segment(current_segment_);
700 for (shared_ptr<DecodeTrace>& dt : decode_traces_)
701 dt->set_current_segment(current_segment_);
704 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
706 trigger_markers_.clear();
707 for (util::Timestamp timestamp : triggers)
708 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, timestamp));
710 if (!custom_zero_offset_set_)
711 reset_zero_position();
715 segment_changed(segment_id);
718 bool View::segment_is_selectable() const
720 return segment_selectable_;
723 Trace::SegmentDisplayMode View::segment_display_mode() const
725 return segment_display_mode_;
728 void View::set_segment_display_mode(Trace::SegmentDisplayMode mode)
730 segment_display_mode_ = mode;
732 for (const shared_ptr<Signal>& signal : signals_)
733 signal->set_segment_display_mode(mode);
735 uint32_t last_segment = session_.get_segment_count() - 1;
738 case Trace::ShowLastSegmentOnly:
739 if (current_segment_ != last_segment)
740 set_current_segment(last_segment);
743 case Trace::ShowLastCompleteSegmentOnly:
744 // Do nothing if we only have one segment so far
745 if (last_segment > 0) {
746 // If the last segment isn't complete, the previous one must be
747 uint32_t segment_id =
748 (session_.all_segments_complete(last_segment)) ?
749 last_segment : last_segment - 1;
751 if (current_segment_ != segment_id)
752 set_current_segment(segment_id);
756 case Trace::ShowSingleSegmentOnly:
757 case Trace::ShowAllSegments:
758 case Trace::ShowAccumulatedIntensity:
760 // Current segment remains as-is
764 segment_selectable_ = true;
766 if ((mode == Trace::ShowAllSegments) || (mode == Trace::ShowAccumulatedIntensity))
767 segment_selectable_ = false;
771 segment_display_mode_changed((int)mode, segment_selectable_);
774 void View::zoom(double steps)
776 zoom(steps, viewport_->width() / 2);
779 void View::zoom(double steps, int offset)
781 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
784 void View::zoom_fit(bool gui_state)
786 // Act as one-shot when stopped, toggle along with the GUI otherwise
787 if (session_.get_capture_state() == Session::Stopped) {
788 always_zoom_to_fit_ = false;
789 always_zoom_to_fit_changed(false);
791 always_zoom_to_fit_ = gui_state;
792 always_zoom_to_fit_changed(gui_state);
795 const pair<Timestamp, Timestamp> extents = get_time_extents();
796 const Timestamp delta = extents.second - extents.first;
797 if (delta < Timestamp("1e-12"))
801 const int w = viewport_->width();
805 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
806 set_scale_offset(scale.convert_to<double>(), extents.first);
809 void View::focus_on_range(uint64_t start_sample, uint64_t end_sample)
812 const int w = viewport_->width();
816 const double samplerate = session_.get_samplerate();
818 const uint64_t sample_delta = (end_sample - start_sample);
820 // Note: We add 20% margin on the left and 5% on the right
821 const Timestamp delta = (sample_delta * 1.25) / samplerate;
823 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
824 const Timestamp offset = (start_sample - sample_delta * 0.20) / samplerate;
826 set_scale_offset(scale.convert_to<double>(), offset);
829 void View::set_scale_offset(double scale, const Timestamp& offset)
831 // Disable sticky scrolling / always zoom to fit when acquisition runs
832 // and user drags the viewport
833 if ((scale_ == scale) && (offset_ != offset) &&
834 (session_.get_capture_state() == Session::Running)) {
836 if (sticky_scrolling_) {
837 sticky_scrolling_ = false;
838 sticky_scrolling_changed(false);
841 if (always_zoom_to_fit_) {
842 always_zoom_to_fit_ = false;
843 always_zoom_to_fit_changed(false);
850 calculate_tick_spacing();
857 vector< shared_ptr<SignalData> > View::get_visible_data() const
859 // Make a set of all the visible data objects
860 vector< shared_ptr<SignalData> > visible_data;
861 for (const shared_ptr<Signal>& sig : signals_)
863 visible_data.push_back(sig->data());
868 pair<Timestamp, Timestamp> View::get_time_extents() const
870 boost::optional<Timestamp> left_time, right_time;
872 vector< shared_ptr<SignalData> > data;
873 if (signals_.size() == 0)
874 return make_pair(0, 0);
876 data.push_back(signals_.front()->data());
878 for (const shared_ptr<SignalData>& d : data) {
879 const vector< shared_ptr<Segment> > segments = d->segments();
880 for (const shared_ptr<Segment>& s : segments) {
881 double samplerate = s->samplerate();
882 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
884 const Timestamp start_time = s->start_time();
885 left_time = left_time ?
886 min(*left_time, start_time) :
888 right_time = right_time ?
889 max(*right_time, start_time + d->max_sample_count() / samplerate) :
890 start_time + d->max_sample_count() / samplerate;
894 if (!left_time || !right_time)
895 return make_pair(0, 0);
897 assert(*left_time < *right_time);
898 return make_pair(*left_time, *right_time);
901 bool View::colored_bg() const
906 bool View::cursors_shown() const
908 return show_cursors_;
911 void View::show_cursors(bool show)
913 if (show_cursors_ != show) {
914 show_cursors_ = show;
916 cursor_state_changed(show);
922 void View::set_cursors(pv::util::Timestamp& first, pv::util::Timestamp& second)
926 cursors_->first()->set_time(first);
927 cursors_->second()->set_time(second);
933 void View::center_cursors()
937 const double time_width = scale_ * viewport_->width();
938 cursors_->first()->set_time(offset_ + time_width * 0.4);
939 cursors_->second()->set_time(offset_ + time_width * 0.6);
945 shared_ptr<CursorPair> View::cursors() const
950 shared_ptr<Flag> View::add_flag(const Timestamp& time)
952 shared_ptr<Flag> flag =
953 make_shared<Flag>(*this, time, QString("%1").arg(next_flag_text_));
954 flags_.push_back(flag);
956 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
957 (next_flag_text_ + 1);
959 time_item_appearance_changed(true, true);
963 void View::remove_flag(shared_ptr<Flag> flag)
966 time_item_appearance_changed(true, true);
969 vector< shared_ptr<Flag> > View::flags() const
971 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
972 stable_sort(flags.begin(), flags.end(),
973 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
974 return a->time() < b->time();
980 const QPoint& View::hover_point() const
985 const QWidget* View::hover_widget() const
987 return hover_widget_;
990 int64_t View::get_nearest_level_change(const QPoint &p)
992 // Is snapping disabled?
993 if (snap_distance_ == 0)
997 entry_t(shared_ptr<Signal> s) :
998 signal(s), delta(numeric_limits<int64_t>::max()), sample(-1), is_dense(false) {}
999 shared_ptr<Signal> signal;
1005 vector<entry_t> list;
1007 // Create list of signals to consider
1008 if (signal_under_mouse_cursor_)
1009 list.emplace_back(signal_under_mouse_cursor_);
1011 for (shared_ptr<Signal> s : signals_) {
1015 list.emplace_back(s);
1018 // Get data for listed signals
1019 for (entry_t &e : list) {
1020 // Calculate sample number from cursor position
1021 const double samples_per_pixel = e.signal->base()->get_samplerate() * scale();
1022 const int64_t x_offset = offset().convert_to<double>() / scale();
1023 const int64_t sample_num = max(((x_offset + p.x()) * samples_per_pixel), 0.0);
1025 vector<data::LogicSegment::EdgePair> edges =
1026 e.signal->get_nearest_level_changes(sample_num);
1032 const int64_t first_sample_delta = abs(sample_num - edges.front().first);
1033 const int64_t first_delta = first_sample_delta / samples_per_pixel;
1034 e.delta = first_delta;
1035 e.sample = edges.front().first;
1037 // Check second edge if available
1038 if (edges.size() == 2) {
1039 // Note: -1 because this is usually the right edge and sample points are left-aligned
1040 const int64_t second_sample_delta = abs(sample_num - edges.back().first - 1);
1041 const int64_t second_delta = second_sample_delta / samples_per_pixel;
1043 // If both edges are too close, we mark this signal as being dense
1044 if ((first_delta + second_delta) <= snap_distance_)
1047 if (second_delta < first_delta) {
1048 e.delta = second_delta;
1049 e.sample = edges.back().first;
1054 // Look for the best match: non-dense first, then dense
1055 entry_t *match = nullptr;
1057 for (entry_t &e : list) {
1058 if (e.delta > snap_distance_ || e.is_dense)
1062 if (e.delta < match->delta)
1069 for (entry_t &e : list) {
1074 if (e.delta < match->delta)
1082 // Somewhat ugly hack to make TimeItem::drag_by() work
1083 signal_under_mouse_cursor_ = match->signal;
1085 return match->sample;
1091 void View::restack_all_trace_tree_items()
1093 // Make a list of owners that is sorted from deepest first
1094 const vector<shared_ptr<TraceTreeItem>> items(
1095 list_by_type<TraceTreeItem>());
1096 set< TraceTreeItemOwner* > owners;
1097 for (const auto &r : items)
1098 owners.insert(r->owner());
1099 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
1100 sort(sorted_owners.begin(), sorted_owners.end(),
1101 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
1102 return a->depth() > b->depth(); });
1104 // Restack the items recursively
1105 for (auto &o : sorted_owners)
1108 // Animate the items to their destination
1109 for (const auto &i : items)
1110 i->animate_to_layout_v_offset();
1113 int View::header_width() const
1115 return header_->extended_size_hint().width();
1118 void View::on_setting_changed(const QString &key, const QVariant &value)
1120 GlobalSettings settings;
1122 if (key == GlobalSettings::Key_View_ColoredBG) {
1123 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
1124 viewport_->update();
1127 if ((key == GlobalSettings::Key_View_ShowSamplingPoints) ||
1128 (key == GlobalSettings::Key_View_ShowAnalogMinorGrid))
1129 viewport_->update();
1131 if (key == GlobalSettings::Key_View_TriggerIsZeroTime)
1132 on_settingViewTriggerIsZeroTime_changed(value);
1134 if (key == GlobalSettings::Key_View_SnapDistance)
1135 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
1138 void View::trigger_event(int segment_id, util::Timestamp location)
1140 // TODO This doesn't work if we're showing multiple segments at once
1141 if ((uint32_t)segment_id != current_segment_)
1144 if (!custom_zero_offset_set_)
1145 reset_zero_position();
1147 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
1150 void View::get_scroll_layout(double &length, Timestamp &offset) const
1152 const pair<Timestamp, Timestamp> extents = get_time_extents();
1153 length = ((extents.second - extents.first) / scale_).convert_to<double>();
1154 offset = offset_ / scale_;
1157 void View::set_zoom(double scale, int offset)
1159 // Reset the "always zoom to fit" feature as the user changed the zoom
1160 always_zoom_to_fit_ = false;
1161 always_zoom_to_fit_changed(false);
1163 const Timestamp cursor_offset = offset_ + scale_ * offset;
1164 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
1165 const Timestamp new_offset = cursor_offset - new_scale * offset;
1166 set_scale_offset(new_scale.convert_to<double>(), new_offset);
1169 void View::calculate_tick_spacing()
1171 const double SpacingIncrement = 10.0f;
1172 const double MinValueSpacing = 40.0f;
1174 // Figure out the highest numeric value visible on a label
1175 const QSize areaSize = viewport_->size();
1176 const Timestamp max_time = max(fabs(offset_),
1177 fabs(offset_ + scale_ * areaSize.width()));
1179 double min_width = SpacingIncrement;
1180 double label_width, tick_period_width;
1182 QFontMetrics m(QApplication::font());
1184 // Copies of the member variables with the same name, used in the calculation
1185 // and written back afterwards, so that we don't emit signals all the time
1186 // during the calculation.
1187 pv::util::Timestamp tick_period = tick_period_;
1188 pv::util::SIPrefix tick_prefix = tick_prefix_;
1189 unsigned tick_precision = tick_precision_;
1192 const double min_period = scale_ * min_width;
1194 const int order = (int)floorf(log10f(min_period));
1195 const pv::util::Timestamp order_decimal =
1196 pow(pv::util::Timestamp(10), order);
1198 // Allow for a margin of error so that a scale unit of 1 can be used.
1199 // Otherwise, for a SU of 1 the tick period will almost always be below
1200 // the min_period by a small amount - and thus skipped in favor of 2.
1201 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
1202 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
1203 double tp_with_margin;
1204 unsigned int unit = 0;
1207 tp_with_margin = order_decimal.convert_to<double>() *
1208 (ScaleUnits[unit++] + tp_margin);
1209 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
1211 minor_tick_count_ = (unit == 2) ? 4 : 5;
1212 tick_period = order_decimal * ScaleUnits[unit - 1];
1213 tick_prefix = static_cast<pv::util::SIPrefix>(
1214 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
1216 // Precision is the number of fractional digits required, not
1217 // taking the prefix into account (and it must never be negative)
1218 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
1220 tick_period_width = (tick_period / scale_).convert_to<double>();
1222 const QString label_text = Ruler::format_time_with_distance(
1223 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
1225 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
1226 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
1229 min_width += SpacingIncrement;
1230 } while (tick_period_width < label_width);
1232 set_tick_period(tick_period);
1233 set_tick_prefix(tick_prefix);
1234 set_tick_precision(tick_precision);
1237 void View::adjust_top_margin()
1241 const QSize areaSize = viewport_->size();
1243 const pair<int, int> extents = v_extents();
1244 const int top_margin = owner_visual_v_offset() + extents.first;
1245 const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second;
1247 // Do we have empty space at the top while the last trace goes out of screen?
1248 if ((top_margin > 0) && (trace_bottom > areaSize.height())) {
1249 const int trace_height = extents.second - extents.first;
1251 // Center everything vertically if there is enough space
1252 if (areaSize.height() >= trace_height)
1253 set_v_offset(extents.first -
1254 ((areaSize.height() - trace_height) / 2));
1256 // Remove the top margin to make as many traces fit on screen as possible
1257 set_v_offset(extents.first);
1261 void View::update_scroll()
1264 QScrollBar *hscrollbar = scrollarea_->horizontalScrollBar();
1265 QScrollBar *vscrollbar = scrollarea_->verticalScrollBar();
1267 const QSize areaSize = viewport_->size();
1269 // Set the horizontal scroll bar
1272 get_scroll_layout(length, offset);
1273 length = max(length - areaSize.width(), 0.0);
1275 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
1277 hscrollbar->setPageStep(areaSize.width() / 2);
1278 hscrollbar->setSingleStep(major_tick_distance);
1280 updating_scroll_ = true;
1282 if (length < MaxScrollValue) {
1283 hscrollbar->setRange(0, length);
1284 hscrollbar->setSliderPosition(offset.convert_to<double>());
1286 hscrollbar->setRange(0, MaxScrollValue);
1287 hscrollbar->setSliderPosition(
1288 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
1291 updating_scroll_ = false;
1293 // Set the vertical scrollbar
1294 vscrollbar->setPageStep(areaSize.height());
1295 vscrollbar->setSingleStep(areaSize.height() / 8);
1297 const pair<int, int> extents = v_extents();
1299 // Don't change the scrollbar range if there are no traces
1300 if (extents.first != extents.second) {
1301 int top_margin = ViewScrollMargin;
1302 int btm_margin = ViewScrollMargin;
1304 vscrollbar->setRange(extents.first - areaSize.height() + top_margin,
1305 extents.second - btm_margin);
1308 if (scroll_needs_defaults_) {
1309 set_scroll_default();
1310 scroll_needs_defaults_ = false;
1314 void View::reset_scroll()
1316 scrollarea_->verticalScrollBar()->setRange(0, 0);
1319 void View::set_scroll_default()
1323 const QSize areaSize = viewport_->size();
1325 const pair<int, int> extents = v_extents();
1326 const int trace_height = extents.second - extents.first;
1328 // Do all traces fit in the view?
1329 if (areaSize.height() >= trace_height)
1330 // Center all traces vertically
1331 set_v_offset(extents.first -
1332 ((areaSize.height() - trace_height) / 2));
1334 // Put the first trace at the top, letting the bottom ones overflow
1335 set_v_offset(extents.first);
1338 void View::determine_if_header_was_shrunk()
1340 const int header_pane_width =
1341 splitter_->sizes().front(); // clazy:exclude=detaching-temporary
1343 // Allow for a slight margin of error so that we also accept
1344 // slight differences when e.g. a label name change increased
1345 // the overall width
1346 header_was_shrunk_ = (header_pane_width < (header_width() - 10));
1349 void View::resize_header_to_fit()
1351 // Setting the maximum width of the header widget doesn't work as
1352 // expected because the splitter would allow the user to make the
1353 // pane wider than that, creating empty space as a result.
1354 // To make this work, we stricly enforce the maximum width by
1355 // expanding the header unless the user shrunk it on purpose.
1356 // As we're then setting the width of the header pane, we set the
1357 // splitter to the maximum allowed position.
1359 int splitter_area_width = 0;
1360 for (int w : splitter_->sizes()) // clazy:exclude=range-loop
1361 splitter_area_width += w;
1363 // Make sure the header has enough horizontal space to show all labels fully
1364 QList<int> pane_sizes;
1365 pane_sizes.push_back(header_->extended_size_hint().width());
1366 pane_sizes.push_back(splitter_area_width - header_->extended_size_hint().width());
1367 splitter_->setSizes(pane_sizes);
1370 void View::update_layout()
1375 TraceTreeItemOwner* View::find_prevalent_trace_group(
1376 const shared_ptr<sigrok::ChannelGroup> &group,
1377 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1382 unordered_set<TraceTreeItemOwner*> owners;
1383 vector<TraceTreeItemOwner*> owner_list;
1385 // Make a set and a list of all the owners
1386 for (const auto& channel : group->channels()) {
1387 for (auto& entry : signal_map) {
1388 if (entry.first->channel() == channel) {
1389 TraceTreeItemOwner *const o = (entry.second)->owner();
1390 owner_list.push_back(o);
1396 // Iterate through the list of owners, and find the most prevalent
1397 size_t max_prevalence = 0;
1398 TraceTreeItemOwner *prevalent_owner = nullptr;
1399 for (TraceTreeItemOwner *owner : owners) {
1400 const size_t prevalence = count_if(
1401 owner_list.begin(), owner_list.end(),
1402 [&](TraceTreeItemOwner *o) { return o == owner; });
1403 if (prevalence > max_prevalence) {
1404 max_prevalence = prevalence;
1405 prevalent_owner = owner;
1409 return prevalent_owner;
1412 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
1413 const vector< shared_ptr<sigrok::Channel> > &channels,
1414 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1416 set< shared_ptr<Trace> > &add_list)
1418 vector< shared_ptr<Trace> > filtered_traces;
1420 for (const auto& channel : channels) {
1421 for (auto& entry : signal_map) {
1422 if (entry.first->channel() == channel) {
1423 shared_ptr<Trace> trace = entry.second;
1424 const auto list_iter = add_list.find(trace);
1425 if (list_iter == add_list.end())
1428 filtered_traces.push_back(trace);
1429 add_list.erase(list_iter);
1434 return filtered_traces;
1437 void View::determine_time_unit()
1439 // Check whether we know the sample rate and hence can use time as the unit
1440 if (time_unit_ == util::TimeUnit::Samples) {
1441 // Check all signals but...
1442 for (const shared_ptr<Signal>& signal : signals_) {
1443 const shared_ptr<SignalData> data = signal->data();
1445 // ...only check first segment of each
1446 const vector< shared_ptr<Segment> > segments = data->segments();
1447 if (!segments.empty())
1448 if (segments[0]->samplerate()) {
1449 set_time_unit(util::TimeUnit::Time);
1456 bool View::eventFilter(QObject *object, QEvent *event)
1458 const QEvent::Type type = event->type();
1460 if (type == QEvent::MouseMove) {
1463 hover_widget_ = qobject_cast<QWidget*>(object);
1465 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1466 if (object == viewport_)
1467 hover_point_ = mouse_event->pos();
1468 else if (object == ruler_)
1469 hover_point_ = mouse_event->pos();
1470 else if (object == header_)
1471 hover_point_ = QPoint(0, mouse_event->y());
1473 hover_point_ = QPoint(-1, -1);
1475 update_hover_point();
1477 if (grabbed_widget_) {
1478 int64_t nearest = get_nearest_level_change(hover_point_);
1479 pv::util::Timestamp mouse_time = offset_ + hover_point_.x() * scale_;
1481 if (nearest == -1) {
1482 grabbed_widget_->set_time(mouse_time);
1484 grabbed_widget_->set_time(nearest / get_signal_under_mouse_cursor()->base()->get_samplerate());
1488 } else if (type == QEvent::MouseButtonPress) {
1489 grabbed_widget_ = nullptr;
1491 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1492 if ((object == viewport_) && (mouse_event->button() & Qt::LeftButton)) {
1493 // Send event to all trace tree items
1494 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1495 list_by_type<TraceTreeItem>());
1496 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1497 r->mouse_left_press_event(mouse_event);
1499 } else if (type == QEvent::Leave) {
1500 hover_point_ = QPoint(-1, -1);
1501 update_hover_point();
1502 } else if (type == QEvent::Show) {
1504 // This is somewhat of a hack, unfortunately. We cannot use
1505 // set_v_offset() from within restore_settings() as the view
1506 // at that point is neither visible nor properly sized.
1507 // This is the least intrusive workaround I could come up
1508 // with: set the vertical offset (or scroll defaults) when
1509 // the view is shown, which happens after all widgets were
1510 // resized to their final sizes.
1513 if (settings_restored_)
1514 determine_if_header_was_shrunk();
1516 resize_header_to_fit();
1518 if (scroll_needs_defaults_) {
1519 set_scroll_default();
1520 scroll_needs_defaults_ = false;
1523 if (saved_v_offset_) {
1524 set_v_offset(saved_v_offset_);
1525 saved_v_offset_ = 0;
1529 return QObject::eventFilter(object, event);
1532 void View::contextMenuEvent(QContextMenuEvent *event)
1534 QPoint pos = event->pos() - QPoint(0, ruler_->sizeHint().height());
1536 const shared_ptr<ViewItem> r = viewport_->get_mouse_over_item(pos);
1540 QMenu *menu = r->create_view_context_menu(this, pos);
1542 menu->popup(event->globalPos());
1545 void View::resizeEvent(QResizeEvent* event)
1547 // Only adjust the top margin if we shrunk vertically
1548 if (event->size().height() < event->oldSize().height())
1549 adjust_top_margin();
1554 void View::update_hover_point()
1556 // Determine signal that the mouse cursor is hovering over
1557 signal_under_mouse_cursor_.reset();
1558 if (hover_widget_ == this) {
1559 for (const shared_ptr<Signal>& s : signals_) {
1560 const pair<int, int> extents = s->v_extents();
1561 const int top = s->get_visual_y() + extents.first;
1562 const int btm = s->get_visual_y() + extents.second;
1563 if ((hover_point_.y() >= top) && (hover_point_.y() <= btm)
1564 && s->base()->enabled())
1565 signal_under_mouse_cursor_ = s;
1569 // Update all trace tree items
1570 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1571 list_by_type<TraceTreeItem>());
1572 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1573 r->hover_point_changed(hover_point_);
1575 // Notify any other listeners
1576 hover_point_changed(hover_widget_, hover_point_);
1579 void View::row_item_appearance_changed(bool label, bool content)
1584 viewport_->update();
1587 void View::time_item_appearance_changed(bool label, bool content)
1592 // Make sure the header pane width is updated, too
1597 viewport_->update();
1600 void View::extents_changed(bool horz, bool vert)
1603 (horz ? TraceTreeItemHExtentsChanged : 0) |
1604 (vert ? TraceTreeItemVExtentsChanged : 0);
1606 if (!lazy_event_handler_.isActive())
1607 lazy_event_handler_.start();
1610 void View::on_signal_name_changed()
1612 if (!header_was_shrunk_)
1613 resize_header_to_fit();
1616 void View::on_splitter_moved()
1618 // The header can only shrink when the splitter is moved manually
1619 determine_if_header_was_shrunk();
1621 if (!header_was_shrunk_)
1622 resize_header_to_fit();
1625 void View::on_zoom_in_shortcut_triggered()
1630 void View::on_zoom_out_shortcut_triggered()
1635 void View::on_scroll_to_start_shortcut_triggered()
1640 void View::on_scroll_to_end_shortcut_triggered()
1642 set_h_offset(get_h_scrollbar_maximum());
1645 void View::h_scroll_value_changed(int value)
1647 if (updating_scroll_)
1650 // Disable sticky scrolling when user moves the horizontal scroll bar
1651 // during a running acquisition
1652 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1653 sticky_scrolling_ = false;
1654 sticky_scrolling_changed(false);
1657 const int range = scrollarea_->horizontalScrollBar()->maximum();
1658 if (range < MaxScrollValue)
1659 set_offset(scale_ * value);
1663 get_scroll_layout(length, offset);
1664 set_offset(scale_ * length * value / MaxScrollValue);
1668 viewport_->update();
1671 void View::v_scroll_value_changed()
1674 viewport_->update();
1677 void View::on_grab_ruler(int ruler_id)
1679 if (!cursors_shown()) {
1684 // Release the grabbed widget if its trigger hotkey was pressed twice
1686 grabbed_widget_ = (grabbed_widget_ == cursors_->first().get()) ?
1687 nullptr : cursors_->first().get();
1689 grabbed_widget_ = (grabbed_widget_ == cursors_->second().get()) ?
1690 nullptr : cursors_->second().get();
1692 if (grabbed_widget_)
1693 grabbed_widget_->set_time(ruler_->get_absolute_time_from_x_pos(
1694 mapFromGlobal(QCursor::pos()).x() - header_width()));
1697 void View::signals_changed()
1699 using sigrok::Channel;
1701 vector< shared_ptr<Channel> > channels;
1702 shared_ptr<sigrok::Device> sr_dev;
1703 bool signals_added_or_removed = false;
1705 // Do we need to set the vertical scrollbar to its default position later?
1706 // We do if there are no traces, i.e. the scroll bar has no range set
1707 bool reset_scrollbar =
1708 (scrollarea_->verticalScrollBar()->minimum() ==
1709 scrollarea_->verticalScrollBar()->maximum());
1711 if (!session_.device()) {
1715 sr_dev = session_.device()->device();
1717 channels = sr_dev->channels();
1720 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1722 // Make a list of traces that are being added, and a list of traces
1723 // that are being removed
1724 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1725 const set<shared_ptr<Trace>> prev_traces(
1726 prev_trace_list.begin(), prev_trace_list.end());
1728 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1730 #ifdef ENABLE_DECODE
1731 traces.insert(decode_traces_.begin(), decode_traces_.end());
1734 set< shared_ptr<Trace> > add_traces;
1735 set_difference(traces.begin(), traces.end(),
1736 prev_traces.begin(), prev_traces.end(),
1737 inserter(add_traces, add_traces.begin()));
1739 set< shared_ptr<Trace> > remove_traces;
1740 set_difference(prev_traces.begin(), prev_traces.end(),
1741 traces.begin(), traces.end(),
1742 inserter(remove_traces, remove_traces.begin()));
1744 // Make a look-up table of sigrok Channels to pulseview Signals
1745 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1747 for (const shared_ptr<Signal>& sig : signals_)
1748 signal_map[sig->base()] = sig;
1750 // Populate channel groups
1752 for (auto& entry : sr_dev->channel_groups()) {
1753 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1755 if (group->channels().size() <= 1)
1758 // Find best trace group to add to
1759 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1762 // If there is no trace group, create one
1763 shared_ptr<TraceGroup> new_trace_group;
1765 new_trace_group.reset(new TraceGroup());
1766 owner = new_trace_group.get();
1769 // Extract traces for the trace group, removing them from
1771 const vector< shared_ptr<Trace> > new_traces_in_group =
1772 extract_new_traces_for_channels(group->channels(),
1773 signal_map, add_traces);
1775 // Add the traces to the group
1776 const pair<int, int> prev_v_extents = owner->v_extents();
1777 int offset = prev_v_extents.second - prev_v_extents.first;
1778 for (const shared_ptr<Trace>& trace : new_traces_in_group) {
1780 owner->add_child_item(trace);
1782 const pair<int, int> extents = trace->v_extents();
1783 if (trace->enabled())
1784 offset += -extents.first;
1785 trace->force_to_v_offset(offset);
1786 if (trace->enabled())
1787 offset += extents.second;
1790 if (new_trace_group) {
1791 // Assign proper vertical offsets to each channel in the group
1792 new_trace_group->restack_items();
1794 // If this is a new group, enqueue it in the new top level
1796 if (!new_traces_in_group.empty())
1797 new_top_level_items.push_back(new_trace_group);
1801 // Enqueue the remaining logic channels in a group
1802 vector< shared_ptr<Channel> > logic_channels;
1803 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1804 [](const shared_ptr<Channel>& c) {
1805 return c->type() == sigrok::ChannelType::LOGIC; });
1807 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1808 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1810 if (non_grouped_logic_signals.size() > 0) {
1811 const shared_ptr<TraceGroup> non_grouped_trace_group(
1812 make_shared<TraceGroup>());
1813 for (const shared_ptr<Trace>& trace : non_grouped_logic_signals)
1814 non_grouped_trace_group->add_child_item(trace);
1816 non_grouped_trace_group->restack_items();
1817 new_top_level_items.push_back(non_grouped_trace_group);
1820 // Enqueue the remaining channels as free ungrouped traces
1821 const vector< shared_ptr<Trace> > new_top_level_signals =
1822 extract_new_traces_for_channels(channels, signal_map, add_traces);
1823 new_top_level_items.insert(new_top_level_items.end(),
1824 new_top_level_signals.begin(), new_top_level_signals.end());
1826 // Enqueue any remaining traces i.e. decode traces
1827 new_top_level_items.insert(new_top_level_items.end(),
1828 add_traces.begin(), add_traces.end());
1830 // Remove any removed traces
1831 for (const shared_ptr<Trace>& trace : remove_traces) {
1832 TraceTreeItemOwner *const owner = trace->owner();
1834 owner->remove_child_item(trace);
1835 signals_added_or_removed = true;
1838 // Remove any empty trace groups
1839 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1840 if (group->child_items().size() == 0) {
1841 remove_child_item(group);
1845 // Add and position the pending top levels items
1846 int offset = v_extents().second;
1847 for (auto item : new_top_level_items) {
1848 add_child_item(item);
1850 // Position the item after the last item or at the top if there is none
1851 const pair<int, int> extents = item->v_extents();
1853 if (item->enabled())
1854 offset += -extents.first;
1856 item->force_to_v_offset(offset);
1858 if (item->enabled())
1859 offset += extents.second;
1860 signals_added_or_removed = true;
1864 if (signals_added_or_removed && !header_was_shrunk_)
1865 resize_header_to_fit();
1870 viewport_->update();
1872 if (reset_scrollbar)
1873 set_scroll_default();
1876 void View::capture_state_updated(int state)
1878 GlobalSettings settings;
1880 if (state == Session::Running) {
1881 set_time_unit(util::TimeUnit::Samples);
1883 trigger_markers_.clear();
1884 if (!custom_zero_offset_set_)
1885 set_zero_position(0);
1887 scale_at_acq_start_ = scale_;
1888 offset_at_acq_start_ = offset_;
1890 // Activate "always zoom to fit" if the setting is enabled and we're
1891 // the main view of this session (other trace views may be used for
1892 // zooming and we don't want to mess them up)
1893 bool state = settings.value(GlobalSettings::Key_View_ZoomToFitDuringAcq).toBool();
1894 if (is_main_view_ && state) {
1895 always_zoom_to_fit_ = true;
1896 always_zoom_to_fit_changed(always_zoom_to_fit_);
1899 // Enable sticky scrolling if the setting is enabled
1900 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
1902 // Reset all traces to segment 0
1903 current_segment_ = 0;
1904 set_current_segment(current_segment_);
1907 if (state == Session::Stopped) {
1908 // After acquisition has stopped we need to re-calculate the ticks once
1909 // as it's otherwise done when the user pans or zooms, which is too late
1910 calculate_tick_spacing();
1912 // Reset "always zoom to fit", the acquisition has stopped
1913 if (always_zoom_to_fit_) {
1914 // Perform a final zoom-to-fit before disabling
1915 zoom_fit(always_zoom_to_fit_);
1916 always_zoom_to_fit_ = false;
1917 always_zoom_to_fit_changed(always_zoom_to_fit_);
1920 bool zoom_to_fit_after_acq =
1921 settings.value(GlobalSettings::Key_View_ZoomToFitAfterAcq).toBool();
1923 // Only perform zoom-to-fit if the user hasn't altered the viewport and
1924 // we didn't restore settings in the meanwhile
1925 if (zoom_to_fit_after_acq &&
1926 !suppress_zoom_to_fit_after_acq_ &&
1927 (scale_ == scale_at_acq_start_) &&
1928 (offset_ == offset_at_acq_start_))
1929 zoom_fit(false); // We're stopped, so the GUI state doesn't matter
1931 suppress_zoom_to_fit_after_acq_ = false;
1935 void View::on_new_segment(int new_segment_id)
1937 on_segment_changed(new_segment_id);
1940 void View::on_segment_completed(int segment_id)
1942 on_segment_changed(segment_id);
1945 void View::on_segment_changed(int segment)
1947 switch (segment_display_mode_) {
1948 case Trace::ShowLastSegmentOnly:
1949 case Trace::ShowSingleSegmentOnly:
1950 set_current_segment(segment);
1953 case Trace::ShowLastCompleteSegmentOnly:
1954 // Only update if all segments are complete
1955 if (session_.all_segments_complete(segment))
1956 set_current_segment(segment);
1959 case Trace::ShowAllSegments:
1960 case Trace::ShowAccumulatedIntensity:
1966 void View::on_settingViewTriggerIsZeroTime_changed(const QVariant new_value)
1970 if (!custom_zero_offset_set_)
1971 reset_zero_position();
1974 void View::perform_delayed_view_update()
1976 if (always_zoom_to_fit_) {
1978 } else if (sticky_scrolling_) {
1979 // Make right side of the view sticky
1982 get_scroll_layout(length, offset);
1984 const QSize areaSize = viewport_->size();
1985 length = max(length - areaSize.width(), 0.0);
1987 set_offset(scale_ * length);
1990 determine_time_unit();
1993 viewport_->update();
1996 void View::process_sticky_events()
1998 if (sticky_events_ & TraceTreeItemHExtentsChanged)
2000 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
2001 restack_all_trace_tree_items();
2005 // Clear the sticky events
2009 } // namespace trace
2010 } // namespace views