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>
33 #include <QApplication>
36 #include <QFontMetrics>
38 #include <QMouseEvent>
40 #include <QVBoxLayout>
42 #include <libsigrokcxx/libsigrokcxx.hpp>
44 #include "analogsignal.hpp"
46 #include "logicsignal.hpp"
49 #include "tracegroup.hpp"
50 #include "triggermarker.hpp"
52 #include "viewport.hpp"
54 #include "pv/metadata_obj.hpp"
55 #include "pv/data/logic.hpp"
56 #include "pv/data/logicsegment.hpp"
57 #include "pv/devices/device.hpp"
58 #include "pv/globalsettings.hpp"
59 #include "pv/session.hpp"
60 #include "pv/util.hpp"
63 #include "decodetrace.hpp"
66 using pv::data::SignalData;
67 using pv::data::Segment;
68 using pv::util::TimeUnit;
69 using pv::util::Timestamp;
71 using std::back_inserter;
75 using std::lock_guard;
78 using std::make_shared;
80 using std::numeric_limits;
83 using std::set_difference;
84 using std::shared_ptr;
91 const Timestamp View::MaxScale("1e9");
92 const Timestamp View::MinScale("1e-12");
94 const int View::MaxScrollValue = INT_MAX / 2;
96 /* Area at the top and bottom of the view that can't be scrolled out of sight */
97 const int View::ViewScrollMargin = 50;
99 const int View::ScaleUnits[3] = {1, 2, 5};
101 CustomScrollArea::CustomScrollArea(QWidget *parent) :
102 QAbstractScrollArea(parent)
106 bool CustomScrollArea::viewportEvent(QEvent *event)
108 switch (event->type()) {
110 case QEvent::MouseButtonPress:
111 case QEvent::MouseButtonRelease:
112 case QEvent::MouseButtonDblClick:
113 case QEvent::MouseMove:
115 case QEvent::TouchBegin:
116 case QEvent::TouchUpdate:
117 case QEvent::TouchEnd:
120 return QAbstractScrollArea::viewportEvent(event);
124 View::View(Session &session, bool is_main_view, QMainWindow *parent) :
125 ViewBase(session, is_main_view, parent),
127 // Note: Place defaults in View::reset_view_state(), not here
128 splitter_(new QSplitter()),
129 header_was_shrunk_(false), // The splitter remains unchanged after a reset, so this goes here
130 sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui()
131 scroll_needs_defaults_(true)
133 QVBoxLayout *root_layout = new QVBoxLayout(this);
134 root_layout->setContentsMargins(0, 0, 0, 0);
135 root_layout->addWidget(splitter_);
137 viewport_ = new Viewport(*this);
138 scrollarea_ = new CustomScrollArea(splitter_);
139 scrollarea_->setViewport(viewport_);
140 scrollarea_->setFrameShape(QFrame::NoFrame);
142 ruler_ = new Ruler(*this);
144 header_ = new Header(*this);
145 header_->setMinimumWidth(10); // So that the arrow tips show at least
147 // We put the header into a simple layout so that we can add the top margin,
148 // allowing us to make it line up with the bottom of the ruler
149 QWidget *header_container = new QWidget();
150 header_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
151 QVBoxLayout *header_layout = new QVBoxLayout(header_container);
152 header_layout->setContentsMargins(0, ruler_->sizeHint().height(), 0, 0);
153 header_layout->addWidget(header_);
155 // To let the ruler and scrollarea be on the same split pane, we need a layout
156 QWidget *trace_container = new QWidget();
157 trace_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
158 QVBoxLayout *trace_layout = new QVBoxLayout(trace_container);
159 trace_layout->setSpacing(0); // We don't want space between the ruler and scrollarea
160 trace_layout->setContentsMargins(0, 0, 0, 0);
161 trace_layout->addWidget(ruler_);
162 trace_layout->addWidget(scrollarea_);
164 splitter_->addWidget(header_container);
165 splitter_->addWidget(trace_container);
166 splitter_->setHandleWidth(1); // Don't show a visible rubber band
167 splitter_->setCollapsible(0, false); // Prevent the header from collapsing
168 splitter_->setCollapsible(1, false); // Prevent the traces from collapsing
169 splitter_->setStretchFactor(0, 0); // Prevent the panes from being resized
170 splitter_->setStretchFactor(1, 1); // when the entire view is resized
171 splitter_->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
173 viewport_->installEventFilter(this);
174 ruler_->installEventFilter(this);
175 header_->installEventFilter(this);
177 // Set up settings and event handlers
178 GlobalSettings settings;
179 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
180 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
182 GlobalSettings::add_change_handler(this);
184 // Set up metadata objects and event handlers
186 session_.metadata_obj_manager()->create_object(MetadataObjMainViewRange);
187 session_.metadata_obj_manager()->create_object(MetadataObjMousePos);
190 // Set up UI event handlers
191 connect(scrollarea_->horizontalScrollBar(), SIGNAL(valueChanged(int)),
192 this, SLOT(h_scroll_value_changed(int)));
193 connect(scrollarea_->verticalScrollBar(), SIGNAL(valueChanged(int)),
194 this, SLOT(v_scroll_value_changed()));
196 connect(header_, SIGNAL(selection_changed()),
197 ruler_, SLOT(clear_selection()));
198 connect(ruler_, SIGNAL(selection_changed()),
199 header_, SLOT(clear_selection()));
201 connect(header_, SIGNAL(selection_changed()),
202 this, SIGNAL(selection_changed()));
203 connect(ruler_, SIGNAL(selection_changed()),
204 this, SIGNAL(selection_changed()));
206 connect(splitter_, SIGNAL(splitterMoved(int, int)),
207 this, SLOT(on_splitter_moved()));
209 connect(&lazy_event_handler_, SIGNAL(timeout()),
210 this, SLOT(process_sticky_events()));
211 lazy_event_handler_.setSingleShot(true);
212 lazy_event_handler_.setInterval(1000 / ViewBase::MaxViewAutoUpdateRate);
214 // Set up local keyboard shortcuts
215 zoom_in_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Plus), this,
216 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
217 zoom_in_shortcut_->setAutoRepeat(false);
219 zoom_out_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Minus), this,
220 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
221 zoom_out_shortcut_->setAutoRepeat(false);
223 zoom_in_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Up), this,
224 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
225 zoom_out_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Down), this,
226 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
228 home_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Home), this,
229 SLOT(on_scroll_to_start_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
230 home_shortcut_->setAutoRepeat(false);
232 end_shortcut_ = new QShortcut(QKeySequence(Qt::Key_End), this,
233 SLOT(on_scroll_to_end_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
234 end_shortcut_->setAutoRepeat(false);
236 grab_ruler_left_shortcut_ = new QShortcut(QKeySequence(Qt::Key_1), this,
237 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
238 connect(grab_ruler_left_shortcut_, &QShortcut::activated,
239 this, [=]{on_grab_ruler(1);});
240 grab_ruler_left_shortcut_->setAutoRepeat(false);
242 grab_ruler_right_shortcut_ = new QShortcut(QKeySequence(Qt::Key_2), this,
243 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
244 connect(grab_ruler_right_shortcut_, &QShortcut::activated,
245 this, [=]{on_grab_ruler(2);});
246 grab_ruler_right_shortcut_->setAutoRepeat(false);
248 cancel_grab_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Escape), this,
249 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
250 connect(cancel_grab_shortcut_, &QShortcut::activated,
251 this, [=]{grabbed_widget_ = nullptr;});
252 cancel_grab_shortcut_->setAutoRepeat(false);
254 // Trigger the initial event manually. The default device has signals
255 // which were created before this object came into being
258 // Make sure the transparent widgets are on the top
267 GlobalSettings::remove_change_handler(this);
270 ViewType View::get_type() const
272 return ViewTypeTrace;
275 void View::reset_view_state()
277 ViewBase::reset_view_state();
279 segment_display_mode_ = Trace::ShowLastSegmentOnly;
280 segment_selectable_ = false;
285 custom_zero_offset_set_ = false;
286 updating_scroll_ = false;
287 settings_restored_ = false;
288 always_zoom_to_fit_ = false;
290 tick_prefix_ = pv::util::SIPrefix::yocto;
292 time_unit_ = util::TimeUnit::Time;
293 show_cursors_ = false;
294 cursors_ = make_shared<CursorPair>(*this);
295 next_flag_text_ = 'A';
296 trigger_markers_.clear();
297 hover_widget_ = nullptr;
298 grabbed_widget_ = nullptr;
299 hover_point_ = QPoint(-1, -1);
300 scroll_needs_defaults_ = true;
302 scale_at_acq_start_ = 0;
303 offset_at_acq_start_ = 0;
304 suppress_zoom_to_fit_after_acq_ = false;
306 show_cursors_ = false;
307 cursor_state_changed(show_cursors_);
310 // Update the zoom state
311 calculate_tick_spacing();
313 // Make sure the standard bar's segment selector is in sync
314 set_segment_display_mode(segment_display_mode_);
317 Session& View::session()
322 const Session& View::session() const
327 vector< shared_ptr<Signal> > View::signals() const
332 shared_ptr<Signal> View::get_signal_by_signalbase(shared_ptr<data::SignalBase> base) const
334 shared_ptr<Signal> ret_val;
336 for (const shared_ptr<Signal>& s : signals_)
337 if (s->base() == base) {
345 void View::clear_signalbases()
347 ViewBase::clear_signalbases();
351 void View::add_signalbase(const shared_ptr<data::SignalBase> signalbase)
353 ViewBase::add_signalbase(signalbase);
355 shared_ptr<Signal> signal;
357 switch (signalbase->type()) {
358 case SignalBase::LogicChannel:
359 signal = shared_ptr<Signal>(new LogicSignal(session_, session_.device(), signalbase));
362 case SignalBase::AnalogChannel:
363 signal = shared_ptr<Signal>(new AnalogSignal(session_, signalbase));
367 qDebug() << "Unknown signalbase type:" << signalbase->type();
372 signals_.push_back(signal);
374 signal->set_segment_display_mode(segment_display_mode_);
375 signal->set_current_segment(current_segment_);
377 // Secondary views use the signal's settings in the main view
378 if (!is_main_view()) {
379 shared_ptr<View> main_tv = dynamic_pointer_cast<View>(session_.main_view());
380 shared_ptr<Signal> main_signal = main_tv->get_signal_by_signalbase(signalbase);
382 signal->restore_settings(main_signal->save_settings());
385 connect(signal->base().get(), SIGNAL(name_changed(const QString&)),
386 this, SLOT(on_signal_name_changed()));
389 void View::remove_signalbase(const shared_ptr<data::SignalBase> signalbase)
391 ViewBase::remove_signalbase(signalbase);
395 void View::clear_decode_signals()
397 ViewBase::clear_decode_signals();
398 decode_traces_.clear();
401 void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
403 ViewBase::add_decode_signal(signal);
405 shared_ptr<DecodeTrace> d(
406 new DecodeTrace(session_, signal, decode_traces_.size()));
407 decode_traces_.push_back(d);
409 d->set_segment_display_mode(segment_display_mode_);
410 d->set_current_segment(current_segment_);
412 connect(signal.get(), SIGNAL(name_changed(const QString&)),
413 this, SLOT(on_signal_name_changed()));
416 void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
418 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
419 if ((*i)->base() == signal) {
420 decode_traces_.erase(i);
425 ViewBase::remove_decode_signal(signal);
429 shared_ptr<Signal> View::get_signal_under_mouse_cursor() const
431 return signal_under_mouse_cursor_;
439 const View* View::view() const
444 Viewport* View::viewport()
449 const Viewport* View::viewport() const
454 QAbstractScrollArea* View::scrollarea() const
459 const Ruler* View::ruler() const
464 void View::save_settings(QSettings &settings) const
466 settings.setValue("scale", scale_);
467 settings.setValue("v_offset",
468 scrollarea_->verticalScrollBar()->sliderPosition());
470 settings.setValue("splitter_state", splitter_->saveState());
471 settings.setValue("segment_display_mode", segment_display_mode_);
473 GlobalSettings::store_timestamp(settings, "offset", offset_);
475 if (custom_zero_offset_set_)
476 GlobalSettings::store_timestamp(settings, "zero_offset", -zero_offset_);
478 settings.remove("zero_offset");
480 for (const shared_ptr<Signal>& signal : signals_) {
481 settings.beginGroup(signal->base()->internal_name());
482 signal->save_settings(settings);
487 void View::restore_settings(QSettings &settings)
489 // Note: It is assumed that this function is only called once,
490 // immediately after restoring a previous session.
492 if (settings.contains("scale"))
493 set_scale(settings.value("scale").toDouble());
495 if (settings.contains("offset")) {
496 // This also updates ruler_offset_
497 set_offset(GlobalSettings::restore_timestamp(settings, "offset"));
500 if (settings.contains("zero_offset"))
501 set_zero_position(GlobalSettings::restore_timestamp(settings, "zero_offset"));
503 if (settings.contains("splitter_state"))
504 splitter_->restoreState(settings.value("splitter_state").toByteArray());
506 if (settings.contains("segment_display_mode"))
507 set_segment_display_mode(
508 (Trace::SegmentDisplayMode)(settings.value("segment_display_mode").toInt()));
510 for (shared_ptr<Signal> signal : signals_) {
511 settings.beginGroup(signal->base()->internal_name());
512 signal->restore_settings(settings);
516 if (settings.contains("v_offset")) {
517 saved_v_offset_ = settings.value("v_offset").toInt();
518 set_v_offset(saved_v_offset_);
519 scroll_needs_defaults_ = false;
520 // Note: see eventFilter() for additional information
523 settings_restored_ = true;
524 suppress_zoom_to_fit_after_acq_ = true;
526 // Update the ruler so that it uses the new scale
527 calculate_tick_spacing();
530 vector< shared_ptr<TimeItem> > View::time_items() const
532 const vector<shared_ptr<Flag>> f(flags());
533 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
536 items.push_back(cursors_);
537 items.push_back(cursors_->first());
538 items.push_back(cursors_->second());
541 for (auto& trigger_marker : trigger_markers_)
542 items.push_back(trigger_marker);
547 double View::scale() const
552 void View::set_scale(double scale)
554 if (scale_ != scale) {
560 void View::set_offset(const pv::util::Timestamp& offset, bool force_update)
562 if ((offset_ != offset) || force_update) {
564 ruler_offset_ = offset_ + zero_offset_;
566 const int w = viewport_->width();
568 const double samplerate = session_.get_samplerate();
569 // Note: sample_num = time * samplerate
570 // Note: samples_per_pixel = samplerate * scale
571 int64_t start_sample = (offset_ * samplerate).convert_to<int64_t>();
572 int64_t end_sample = (offset_ * samplerate).convert_to<int64_t>() +
573 (w * session_.get_samplerate() * scale_);
575 MetadataObject* md_obj =
576 session_.metadata_obj_manager()->find_object_by_type(MetadataObjMainViewRange);
577 md_obj->set_value(MetadataValueStartSample, QVariant((qlonglong)start_sample));
578 md_obj->set_value(MetadataValueEndSample, QVariant((qlonglong)end_sample));
585 const Timestamp& View::offset() const
590 const Timestamp& View::ruler_offset() const
592 return ruler_offset_;
595 void View::set_zero_position(const pv::util::Timestamp& position)
597 zero_offset_ = -position;
598 custom_zero_offset_set_ = true;
600 // Force an immediate update of the offsets
601 set_offset(offset_, true);
605 void View::reset_zero_position()
609 // When enabled, the first trigger for this segment is used as the zero position
610 GlobalSettings settings;
611 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
613 if (trigger_is_zero_time) {
614 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
616 if (triggers.size() > 0)
617 zero_offset_ = triggers.front();
620 custom_zero_offset_set_ = false;
622 // Force an immediate update of the offsets
623 set_offset(offset_, true);
627 pv::util::Timestamp View::zero_offset() const
632 int View::owner_visual_v_offset() const
634 return -scrollarea_->verticalScrollBar()->sliderPosition();
637 void View::set_v_offset(int offset)
639 scrollarea_->verticalScrollBar()->setSliderPosition(offset);
644 void View::set_h_offset(int offset)
646 scrollarea_->horizontalScrollBar()->setSliderPosition(offset);
651 int View::get_h_scrollbar_maximum() const
653 return scrollarea_->horizontalScrollBar()->maximum();
656 unsigned int View::depth() const
661 uint32_t View::current_segment() const
663 return current_segment_;
666 pv::util::SIPrefix View::tick_prefix() const
671 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
673 if (tick_prefix_ != tick_prefix) {
674 tick_prefix_ = tick_prefix;
675 tick_prefix_changed();
679 unsigned int View::tick_precision() const
681 return tick_precision_;
684 void View::set_tick_precision(unsigned tick_precision)
686 if (tick_precision_ != tick_precision) {
687 tick_precision_ = tick_precision;
688 tick_precision_changed();
692 const pv::util::Timestamp& View::tick_period() const
697 unsigned int View::minor_tick_count() const
699 return minor_tick_count_;
702 void View::set_tick_period(const pv::util::Timestamp& tick_period)
704 if (tick_period_ != tick_period) {
705 tick_period_ = tick_period;
706 tick_period_changed();
710 TimeUnit View::time_unit() const
715 void View::set_time_unit(pv::util::TimeUnit time_unit)
717 if (time_unit_ != time_unit) {
718 time_unit_ = time_unit;
723 void View::set_current_segment(uint32_t segment_id)
725 current_segment_ = segment_id;
727 for (const shared_ptr<Signal>& signal : signals_)
728 signal->set_current_segment(current_segment_);
730 for (shared_ptr<DecodeTrace>& dt : decode_traces_)
731 dt->set_current_segment(current_segment_);
734 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
736 trigger_markers_.clear();
737 for (util::Timestamp timestamp : triggers)
738 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, timestamp));
740 if (!custom_zero_offset_set_)
741 reset_zero_position();
745 segment_changed(segment_id);
748 bool View::segment_is_selectable() const
750 return segment_selectable_;
753 Trace::SegmentDisplayMode View::segment_display_mode() const
755 return segment_display_mode_;
758 void View::set_segment_display_mode(Trace::SegmentDisplayMode mode)
760 segment_display_mode_ = mode;
762 for (const shared_ptr<Signal>& signal : signals_)
763 signal->set_segment_display_mode(mode);
765 uint32_t last_segment = session_.get_segment_count() - 1;
768 case Trace::ShowLastSegmentOnly:
769 if (current_segment_ != last_segment)
770 set_current_segment(last_segment);
773 case Trace::ShowLastCompleteSegmentOnly:
774 // Do nothing if we only have one segment so far
775 if (last_segment > 0) {
776 // If the last segment isn't complete, the previous one must be
777 uint32_t segment_id =
778 (session_.all_segments_complete(last_segment)) ?
779 last_segment : last_segment - 1;
781 if (current_segment_ != segment_id)
782 set_current_segment(segment_id);
786 case Trace::ShowSingleSegmentOnly:
787 case Trace::ShowAllSegments:
788 case Trace::ShowAccumulatedIntensity:
790 // Current segment remains as-is
794 segment_selectable_ = true;
796 if ((mode == Trace::ShowAllSegments) || (mode == Trace::ShowAccumulatedIntensity))
797 segment_selectable_ = false;
801 segment_display_mode_changed((int)mode, segment_selectable_);
804 void View::zoom(double steps)
806 zoom(steps, viewport_->width() / 2);
809 void View::zoom(double steps, int offset)
811 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
814 void View::zoom_fit(bool gui_state)
816 // Act as one-shot when stopped, toggle along with the GUI otherwise
817 if (session_.get_capture_state() == Session::Stopped) {
818 always_zoom_to_fit_ = false;
819 always_zoom_to_fit_changed(false);
821 always_zoom_to_fit_ = gui_state;
822 always_zoom_to_fit_changed(gui_state);
825 const pair<Timestamp, Timestamp> extents = get_time_extents();
826 const Timestamp delta = extents.second - extents.first;
827 if (delta < Timestamp("1e-12"))
831 const int w = viewport_->width();
835 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
836 set_scale_offset(scale.convert_to<double>(), extents.first);
839 void View::focus_on_range(uint64_t start_sample, uint64_t end_sample)
842 const int w = viewport_->width();
846 const double samplerate = session_.get_samplerate();
848 const uint64_t sample_delta = (end_sample - start_sample);
850 // Note: We add 20% margin on the left and 5% on the right
851 const Timestamp delta = (sample_delta * 1.25) / samplerate;
853 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
854 const Timestamp offset = (start_sample - sample_delta * 0.20) / samplerate;
856 set_scale_offset(scale.convert_to<double>(), offset);
859 void View::set_scale_offset(double scale, const Timestamp& offset)
861 // Disable sticky scrolling / always zoom to fit when acquisition runs
862 // and user drags the viewport
863 if ((scale_ == scale) && (offset_ != offset) &&
864 (session_.get_capture_state() == Session::Running)) {
866 if (sticky_scrolling_) {
867 sticky_scrolling_ = false;
868 sticky_scrolling_changed(false);
871 if (always_zoom_to_fit_) {
872 always_zoom_to_fit_ = false;
873 always_zoom_to_fit_changed(false);
880 calculate_tick_spacing();
887 vector< shared_ptr<SignalData> > View::get_visible_data() const
889 // Make a set of all the visible data objects
890 vector< shared_ptr<SignalData> > visible_data;
891 for (const shared_ptr<Signal>& sig : signals_)
893 visible_data.push_back(sig->data());
898 pair<Timestamp, Timestamp> View::get_time_extents() const
900 boost::optional<Timestamp> left_time, right_time;
902 vector< shared_ptr<SignalData> > data;
903 if (signals_.size() == 0)
904 return make_pair(0, 0);
906 data.push_back(signals_.front()->data());
908 for (const shared_ptr<SignalData>& d : data) {
909 const vector< shared_ptr<Segment> > segments = d->segments();
910 for (const shared_ptr<Segment>& s : segments) {
911 double samplerate = s->samplerate();
912 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
914 const Timestamp start_time = s->start_time();
915 left_time = left_time ?
916 min(*left_time, start_time) :
918 right_time = right_time ?
919 max(*right_time, start_time + d->max_sample_count() / samplerate) :
920 start_time + d->max_sample_count() / samplerate;
924 if (!left_time || !right_time)
925 return make_pair(0, 0);
927 assert(*left_time <= *right_time);
928 return make_pair(*left_time, *right_time);
931 bool View::colored_bg() const
936 bool View::cursors_shown() const
938 return show_cursors_;
941 void View::show_cursors(bool show)
943 if (show_cursors_ != show) {
944 show_cursors_ = show;
946 cursor_state_changed(show);
952 void View::set_cursors(pv::util::Timestamp& first, pv::util::Timestamp& second)
956 cursors_->first()->set_time(first);
957 cursors_->second()->set_time(second);
963 void View::center_cursors()
967 const double time_width = scale_ * viewport_->width();
968 cursors_->first()->set_time(offset_ + time_width * 0.4);
969 cursors_->second()->set_time(offset_ + time_width * 0.6);
975 shared_ptr<CursorPair> View::cursors() const
980 shared_ptr<Flag> View::add_flag(const Timestamp& time)
982 shared_ptr<Flag> flag =
983 make_shared<Flag>(*this, time, QString("%1").arg(next_flag_text_));
984 flags_.push_back(flag);
986 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
987 (next_flag_text_ + 1);
989 time_item_appearance_changed(true, true);
993 void View::remove_flag(shared_ptr<Flag> flag)
996 time_item_appearance_changed(true, true);
999 vector< shared_ptr<Flag> > View::flags() const
1001 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
1002 stable_sort(flags.begin(), flags.end(),
1003 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
1004 return a->time() < b->time();
1010 const QPoint& View::hover_point() const
1012 return hover_point_;
1015 const QWidget* View::hover_widget() const
1017 return hover_widget_;
1020 int64_t View::get_nearest_level_change(const QPoint &p)
1022 // Is snapping disabled?
1023 if (snap_distance_ == 0)
1027 entry_t(shared_ptr<Signal> s) :
1028 signal(s), delta(numeric_limits<int64_t>::max()), sample(-1), is_dense(false) {}
1029 shared_ptr<Signal> signal;
1035 vector<entry_t> list;
1037 // Create list of signals to consider
1038 if (signal_under_mouse_cursor_)
1039 list.emplace_back(signal_under_mouse_cursor_);
1041 for (shared_ptr<Signal> s : signals_) {
1045 list.emplace_back(s);
1048 // Get data for listed signals
1049 for (entry_t &e : list) {
1050 // Calculate sample number from cursor position
1051 const double samples_per_pixel = e.signal->base()->get_samplerate() * scale();
1052 const int64_t x_offset = offset().convert_to<double>() / scale();
1053 const int64_t sample_num = max(((x_offset + p.x()) * samples_per_pixel), 0.0);
1055 vector<data::LogicSegment::EdgePair> edges =
1056 e.signal->get_nearest_level_changes(sample_num);
1062 const int64_t first_sample_delta = abs(sample_num - edges.front().first);
1063 const int64_t first_delta = first_sample_delta / samples_per_pixel;
1064 e.delta = first_delta;
1065 e.sample = edges.front().first;
1067 // Check second edge if available
1068 if (edges.size() == 2) {
1069 // Note: -1 because this is usually the right edge and sample points are left-aligned
1070 const int64_t second_sample_delta = abs(sample_num - edges.back().first - 1);
1071 const int64_t second_delta = second_sample_delta / samples_per_pixel;
1073 // If both edges are too close, we mark this signal as being dense
1074 if ((first_delta + second_delta) <= snap_distance_)
1077 if (second_delta < first_delta) {
1078 e.delta = second_delta;
1079 e.sample = edges.back().first;
1084 // Look for the best match: non-dense first, then dense
1085 entry_t *match = nullptr;
1087 for (entry_t &e : list) {
1088 if (e.delta > snap_distance_ || e.is_dense)
1092 if (e.delta < match->delta)
1099 for (entry_t &e : list) {
1104 if (e.delta < match->delta)
1112 // Somewhat ugly hack to make TimeItem::drag_by() work
1113 signal_under_mouse_cursor_ = match->signal;
1115 return match->sample;
1121 void View::restack_all_trace_tree_items()
1123 // Make a list of owners that is sorted from deepest first
1124 const vector<shared_ptr<TraceTreeItem>> items(
1125 list_by_type<TraceTreeItem>());
1126 set< TraceTreeItemOwner* > owners;
1127 for (const auto &r : items)
1128 owners.insert(r->owner());
1129 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
1130 sort(sorted_owners.begin(), sorted_owners.end(),
1131 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
1132 return a->depth() > b->depth(); });
1134 // Restack the items recursively
1135 for (auto &o : sorted_owners)
1138 // Animate the items to their destination
1139 for (const auto &i : items)
1140 i->animate_to_layout_v_offset();
1143 int View::header_width() const
1145 return header_->extended_size_hint().width();
1148 void View::on_setting_changed(const QString &key, const QVariant &value)
1150 GlobalSettings settings;
1152 if (key == GlobalSettings::Key_View_ColoredBG) {
1153 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
1154 viewport_->update();
1157 if ((key == GlobalSettings::Key_View_ShowSamplingPoints) ||
1158 (key == GlobalSettings::Key_View_ShowAnalogMinorGrid))
1159 viewport_->update();
1161 if (key == GlobalSettings::Key_View_TriggerIsZeroTime)
1162 on_settingViewTriggerIsZeroTime_changed(value);
1164 if (key == GlobalSettings::Key_View_SnapDistance)
1165 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
1168 void View::trigger_event(int segment_id, util::Timestamp location)
1170 // TODO This doesn't work if we're showing multiple segments at once
1171 if ((uint32_t)segment_id != current_segment_)
1174 if (!custom_zero_offset_set_)
1175 reset_zero_position();
1177 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
1180 void View::get_scroll_layout(double &length, Timestamp &offset) const
1182 const pair<Timestamp, Timestamp> extents = get_time_extents();
1183 length = ((extents.second - extents.first) / scale_).convert_to<double>();
1184 offset = offset_ / scale_;
1187 void View::set_zoom(double scale, int offset)
1189 // Reset the "always zoom to fit" feature as the user changed the zoom
1190 always_zoom_to_fit_ = false;
1191 always_zoom_to_fit_changed(false);
1193 const Timestamp cursor_offset = offset_ + scale_ * offset;
1194 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
1195 const Timestamp new_offset = cursor_offset - new_scale * offset;
1196 set_scale_offset(new_scale.convert_to<double>(), new_offset);
1199 void View::calculate_tick_spacing()
1201 const double SpacingIncrement = 10.0f;
1202 const double MinValueSpacing = 40.0f;
1204 // Figure out the highest numeric value visible on a label
1205 const QSize areaSize = viewport_->size();
1206 const Timestamp max_time = max(fabs(offset_),
1207 fabs(offset_ + scale_ * areaSize.width()));
1209 double min_width = SpacingIncrement;
1210 double label_width, tick_period_width;
1212 QFontMetrics m(QApplication::font());
1214 // Copies of the member variables with the same name, used in the calculation
1215 // and written back afterwards, so that we don't emit signals all the time
1216 // during the calculation.
1217 pv::util::Timestamp tick_period = tick_period_;
1218 pv::util::SIPrefix tick_prefix = tick_prefix_;
1219 unsigned tick_precision = tick_precision_;
1222 const double min_period = scale_ * min_width;
1224 const int order = (int)floorf(log10f(min_period));
1225 const pv::util::Timestamp order_decimal =
1226 pow(pv::util::Timestamp(10), order);
1228 // Allow for a margin of error so that a scale unit of 1 can be used.
1229 // Otherwise, for a SU of 1 the tick period will almost always be below
1230 // the min_period by a small amount - and thus skipped in favor of 2.
1231 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
1232 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
1233 double tp_with_margin;
1234 unsigned int unit = 0;
1237 tp_with_margin = order_decimal.convert_to<double>() *
1238 (ScaleUnits[unit++] + tp_margin);
1239 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
1241 minor_tick_count_ = (unit == 2) ? 4 : 5;
1242 tick_period = order_decimal * ScaleUnits[unit - 1];
1243 tick_prefix = static_cast<pv::util::SIPrefix>(
1244 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
1246 // Precision is the number of fractional digits required, not
1247 // taking the prefix into account (and it must never be negative)
1248 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
1250 tick_period_width = (tick_period / scale_).convert_to<double>();
1252 const QString label_text = Ruler::format_time_with_distance(
1253 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
1255 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
1256 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
1259 min_width += SpacingIncrement;
1260 } while (tick_period_width < label_width);
1262 set_tick_period(tick_period);
1263 set_tick_prefix(tick_prefix);
1264 set_tick_precision(tick_precision);
1267 void View::adjust_top_margin()
1271 const QSize areaSize = viewport_->size();
1273 const pair<int, int> extents = v_extents();
1274 const int top_margin = owner_visual_v_offset() + extents.first;
1275 const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second;
1277 // Do we have empty space at the top while the last trace goes out of screen?
1278 if ((top_margin > 0) && (trace_bottom > areaSize.height())) {
1279 const int trace_height = extents.second - extents.first;
1281 // Center everything vertically if there is enough space
1282 if (areaSize.height() >= trace_height)
1283 set_v_offset(extents.first -
1284 ((areaSize.height() - trace_height) / 2));
1286 // Remove the top margin to make as many traces fit on screen as possible
1287 set_v_offset(extents.first);
1291 void View::update_scroll()
1294 QScrollBar *hscrollbar = scrollarea_->horizontalScrollBar();
1295 QScrollBar *vscrollbar = scrollarea_->verticalScrollBar();
1297 const QSize areaSize = viewport_->size();
1299 // Set the horizontal scroll bar
1302 get_scroll_layout(length, offset);
1303 length = max(length - areaSize.width(), 0.0);
1305 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
1307 hscrollbar->setPageStep(areaSize.width() / 2);
1308 hscrollbar->setSingleStep(major_tick_distance);
1310 updating_scroll_ = true;
1312 if (length < MaxScrollValue) {
1313 hscrollbar->setRange(0, length);
1314 hscrollbar->setSliderPosition(offset.convert_to<double>());
1316 hscrollbar->setRange(0, MaxScrollValue);
1317 hscrollbar->setSliderPosition(
1318 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
1321 updating_scroll_ = false;
1323 // Set the vertical scrollbar
1324 vscrollbar->setPageStep(areaSize.height());
1325 vscrollbar->setSingleStep(areaSize.height() / 8);
1327 const pair<int, int> extents = v_extents();
1329 // Don't change the scrollbar range if there are no traces
1330 if (extents.first != extents.second) {
1331 int top_margin = ViewScrollMargin;
1332 int btm_margin = ViewScrollMargin;
1334 vscrollbar->setRange(extents.first - areaSize.height() + top_margin,
1335 extents.second - btm_margin);
1338 if (scroll_needs_defaults_) {
1339 set_scroll_default();
1340 scroll_needs_defaults_ = false;
1344 void View::reset_scroll()
1346 scrollarea_->verticalScrollBar()->setRange(0, 0);
1349 void View::set_scroll_default()
1353 const QSize areaSize = viewport_->size();
1355 const pair<int, int> extents = v_extents();
1356 const int trace_height = extents.second - extents.first;
1358 // Do all traces fit in the view?
1359 if (areaSize.height() >= trace_height)
1360 // Center all traces vertically
1361 set_v_offset(extents.first -
1362 ((areaSize.height() - trace_height) / 2));
1364 // Put the first trace at the top, letting the bottom ones overflow
1365 set_v_offset(extents.first);
1368 void View::determine_if_header_was_shrunk()
1370 const int header_pane_width =
1371 splitter_->sizes().front(); // clazy:exclude=detaching-temporary
1373 // Allow for a slight margin of error so that we also accept
1374 // slight differences when e.g. a label name change increased
1375 // the overall width
1376 header_was_shrunk_ = (header_pane_width < (header_width() - 10));
1379 void View::resize_header_to_fit()
1381 // Setting the maximum width of the header widget doesn't work as
1382 // expected because the splitter would allow the user to make the
1383 // pane wider than that, creating empty space as a result.
1384 // To make this work, we stricly enforce the maximum width by
1385 // expanding the header unless the user shrunk it on purpose.
1386 // As we're then setting the width of the header pane, we set the
1387 // splitter to the maximum allowed position.
1389 int splitter_area_width = 0;
1390 for (int w : splitter_->sizes()) // clazy:exclude=range-loop
1391 splitter_area_width += w;
1393 // Make sure the header has enough horizontal space to show all labels fully
1394 QList<int> pane_sizes;
1395 pane_sizes.push_back(header_->extended_size_hint().width());
1396 pane_sizes.push_back(splitter_area_width - header_->extended_size_hint().width());
1397 splitter_->setSizes(pane_sizes);
1400 void View::update_layout()
1405 TraceTreeItemOwner* View::find_prevalent_trace_group(
1406 const shared_ptr<sigrok::ChannelGroup> &group,
1407 const map<shared_ptr<data::SignalBase>, shared_ptr<Signal> > &signal_map)
1411 set<TraceTreeItemOwner*> owners;
1412 vector<TraceTreeItemOwner*> owner_list;
1414 // Make a set and a list of all the owners
1415 for (const auto& channel : group->channels()) {
1416 for (auto& entry : signal_map) {
1417 if (entry.first->channel() == channel) {
1418 TraceTreeItemOwner *const o = (entry.second)->owner();
1419 owner_list.push_back(o);
1425 // Iterate through the list of owners, and find the most prevalent
1426 size_t max_prevalence = 0;
1427 TraceTreeItemOwner *prevalent_owner = nullptr;
1428 for (TraceTreeItemOwner *owner : owners) {
1429 const size_t prevalence = count_if(
1430 owner_list.begin(), owner_list.end(),
1431 [&](TraceTreeItemOwner *o) { return o == owner; });
1432 if (prevalence > max_prevalence) {
1433 max_prevalence = prevalence;
1434 prevalent_owner = owner;
1438 return prevalent_owner;
1441 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
1442 const vector< shared_ptr<sigrok::Channel> > &channels,
1443 const map<shared_ptr<data::SignalBase>, shared_ptr<Signal> > &signal_map,
1444 set< shared_ptr<Trace> > &add_list)
1446 vector< shared_ptr<Trace> > filtered_traces;
1448 for (const auto& channel : channels) {
1449 for (auto& entry : signal_map) {
1450 if (entry.first->channel() == channel) {
1451 shared_ptr<Trace> trace = entry.second;
1452 const auto list_iter = add_list.find(trace);
1453 if (list_iter == add_list.end())
1456 filtered_traces.push_back(trace);
1457 add_list.erase(list_iter);
1462 return filtered_traces;
1465 void View::determine_time_unit()
1467 // Check whether we know the sample rate and hence can use time as the unit
1468 if (time_unit_ == util::TimeUnit::Samples) {
1469 // Check all signals but...
1470 for (const shared_ptr<Signal>& signal : signals_) {
1471 const shared_ptr<SignalData> data = signal->data();
1473 // ...only check first segment of each
1474 const vector< shared_ptr<Segment> > segments = data->segments();
1475 if (!segments.empty())
1476 if (segments[0]->samplerate()) {
1477 set_time_unit(util::TimeUnit::Time);
1484 bool View::eventFilter(QObject *object, QEvent *event)
1486 const QEvent::Type type = event->type();
1488 if (type == QEvent::MouseMove) {
1491 hover_widget_ = qobject_cast<QWidget*>(object);
1493 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1494 if (object == viewport_)
1495 hover_point_ = mouse_event->pos();
1496 else if (object == ruler_)
1497 hover_point_ = mouse_event->pos();
1498 else if (object == header_)
1499 hover_point_ = QPoint(0, mouse_event->y());
1501 hover_point_ = QPoint(-1, -1);
1503 update_hover_point();
1505 if (grabbed_widget_) {
1506 int64_t nearest = get_nearest_level_change(hover_point_);
1507 pv::util::Timestamp mouse_time = offset_ + hover_point_.x() * scale_;
1509 if (nearest == -1) {
1510 grabbed_widget_->set_time(mouse_time);
1512 grabbed_widget_->set_time(nearest / get_signal_under_mouse_cursor()->base()->get_samplerate());
1516 } else if (type == QEvent::MouseButtonPress) {
1517 grabbed_widget_ = nullptr;
1519 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1520 if ((object == viewport_) && (mouse_event->button() & Qt::LeftButton)) {
1521 // Send event to all trace tree items
1522 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1523 list_by_type<TraceTreeItem>());
1524 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1525 r->mouse_left_press_event(mouse_event);
1527 } else if (type == QEvent::Leave) {
1528 hover_point_ = QPoint(-1, -1);
1529 update_hover_point();
1530 } else if (type == QEvent::Show) {
1532 // This is somewhat of a hack, unfortunately. We cannot use
1533 // set_v_offset() from within restore_settings() as the view
1534 // at that point is neither visible nor properly sized.
1535 // This is the least intrusive workaround I could come up
1536 // with: set the vertical offset (or scroll defaults) when
1537 // the view is shown, which happens after all widgets were
1538 // resized to their final sizes.
1541 if (settings_restored_)
1542 determine_if_header_was_shrunk();
1544 resize_header_to_fit();
1546 if (scroll_needs_defaults_) {
1547 set_scroll_default();
1548 scroll_needs_defaults_ = false;
1551 if (saved_v_offset_) {
1552 set_v_offset(saved_v_offset_);
1553 saved_v_offset_ = 0;
1557 return QObject::eventFilter(object, event);
1560 void View::contextMenuEvent(QContextMenuEvent *event)
1562 QPoint pos = event->pos() - QPoint(0, ruler_->sizeHint().height());
1564 const shared_ptr<ViewItem> r = viewport_->get_mouse_over_item(pos);
1568 QMenu *menu = r->create_view_context_menu(this, pos);
1570 menu->popup(event->globalPos());
1573 void View::resizeEvent(QResizeEvent* event)
1575 // Only adjust the top margin if we shrunk vertically
1576 if (event->size().height() < event->oldSize().height())
1577 adjust_top_margin();
1582 void View::update_hover_point()
1584 // Determine signal that the mouse cursor is hovering over
1585 signal_under_mouse_cursor_.reset();
1586 if (hover_widget_ == this) {
1587 for (const shared_ptr<Signal>& s : signals_) {
1588 const pair<int, int> extents = s->v_extents();
1589 const int top = s->get_visual_y() + extents.first;
1590 const int btm = s->get_visual_y() + extents.second;
1591 if ((hover_point_.y() >= top) && (hover_point_.y() <= btm)
1592 && s->base()->enabled())
1593 signal_under_mouse_cursor_ = s;
1597 // Update all trace tree items
1598 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1599 list_by_type<TraceTreeItem>());
1600 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1601 r->hover_point_changed(hover_point_);
1603 // Notify this view's listeners
1604 hover_point_changed(hover_widget_, hover_point_);
1606 // Hover point is -1 when invalid and 0 for the header
1607 if (hover_point_.x() > 0) {
1608 // Notify global listeners
1609 pv::util::Timestamp mouse_time = offset_ + hover_point_.x() * scale_;
1610 int64_t sample_num = (mouse_time * session_.get_samplerate()).convert_to<int64_t>();
1612 MetadataObject* md_obj =
1613 session_.metadata_obj_manager()->find_object_by_type(MetadataObjMousePos);
1614 md_obj->set_value(MetadataValueStartSample, QVariant((qlonglong)sample_num));
1618 void View::row_item_appearance_changed(bool label, bool content)
1623 viewport_->update();
1626 void View::time_item_appearance_changed(bool label, bool content)
1631 // Make sure the header pane width is updated, too
1636 viewport_->update();
1639 void View::extents_changed(bool horz, bool vert)
1642 (horz ? TraceTreeItemHExtentsChanged : 0) |
1643 (vert ? TraceTreeItemVExtentsChanged : 0);
1645 if (!lazy_event_handler_.isActive())
1646 lazy_event_handler_.start();
1649 void View::on_signal_name_changed()
1651 if (!header_was_shrunk_)
1652 resize_header_to_fit();
1655 void View::on_splitter_moved()
1657 // The header can only shrink when the splitter is moved manually
1658 determine_if_header_was_shrunk();
1660 if (!header_was_shrunk_)
1661 resize_header_to_fit();
1664 void View::on_zoom_in_shortcut_triggered()
1669 void View::on_zoom_out_shortcut_triggered()
1674 void View::on_scroll_to_start_shortcut_triggered()
1679 void View::on_scroll_to_end_shortcut_triggered()
1681 set_h_offset(get_h_scrollbar_maximum());
1684 void View::h_scroll_value_changed(int value)
1686 if (updating_scroll_)
1689 // Disable sticky scrolling when user moves the horizontal scroll bar
1690 // during a running acquisition
1691 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1692 sticky_scrolling_ = false;
1693 sticky_scrolling_changed(false);
1696 const int range = scrollarea_->horizontalScrollBar()->maximum();
1697 if (range < MaxScrollValue)
1698 set_offset(scale_ * value);
1702 get_scroll_layout(length, offset);
1703 set_offset(scale_ * length * value / MaxScrollValue);
1707 viewport_->update();
1710 void View::v_scroll_value_changed()
1713 viewport_->update();
1716 void View::on_grab_ruler(int ruler_id)
1718 if (!cursors_shown()) {
1723 // Release the grabbed widget if its trigger hotkey was pressed twice
1725 grabbed_widget_ = (grabbed_widget_ == cursors_->first().get()) ?
1726 nullptr : cursors_->first().get();
1728 grabbed_widget_ = (grabbed_widget_ == cursors_->second().get()) ?
1729 nullptr : cursors_->second().get();
1731 if (grabbed_widget_)
1732 grabbed_widget_->set_time(ruler_->get_absolute_time_from_x_pos(
1733 mapFromGlobal(QCursor::pos()).x() - header_width()));
1736 void View::signals_changed()
1738 using sigrok::Channel;
1740 lock_guard<mutex> lock(signal_mutex_);
1742 vector< shared_ptr<Channel> > channels;
1743 shared_ptr<sigrok::Device> sr_dev;
1744 bool signals_added_or_removed = false;
1746 // Do we need to set the vertical scrollbar to its default position later?
1747 // We do if there are no traces, i.e. the scroll bar has no range set
1748 bool reset_scrollbar =
1749 (scrollarea_->verticalScrollBar()->minimum() ==
1750 scrollarea_->verticalScrollBar()->maximum());
1752 if (!session_.device()) {
1756 sr_dev = session_.device()->device();
1758 channels = sr_dev->channels();
1761 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1763 // Make a list of traces that are being added, and a list of traces
1764 // that are being removed. The set_difference() algorithms require
1765 // both sets to be in the exact same order, which means that PD signals
1766 // must always be last as they interrupt the sort order otherwise
1767 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1768 const set<shared_ptr<Trace>> prev_traces(
1769 prev_trace_list.begin(), prev_trace_list.end());
1771 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1773 #ifdef ENABLE_DECODE
1774 traces.insert(decode_traces_.begin(), decode_traces_.end());
1777 set< shared_ptr<Trace> > add_traces;
1778 set_difference(traces.begin(), traces.end(),
1779 prev_traces.begin(), prev_traces.end(),
1780 inserter(add_traces, add_traces.begin()));
1782 set< shared_ptr<Trace> > remove_traces;
1783 set_difference(prev_traces.begin(), prev_traces.end(),
1784 traces.begin(), traces.end(),
1785 inserter(remove_traces, remove_traces.begin()));
1787 // Make a look-up table of sigrok Channels to pulseview Signals
1788 map<shared_ptr<data::SignalBase>, shared_ptr<Signal> > signal_map;
1789 for (const shared_ptr<Signal>& sig : signals_)
1790 signal_map[sig->base()] = sig;
1792 // Populate channel groups
1794 for (auto& entry : sr_dev->channel_groups()) {
1795 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1797 if (group->channels().size() <= 1)
1800 // Find best trace group to add to
1801 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1804 // If there is no trace group, create one
1805 shared_ptr<TraceGroup> new_trace_group;
1807 new_trace_group.reset(new TraceGroup());
1808 owner = new_trace_group.get();
1811 // Extract traces for the trace group, removing them from
1813 const vector< shared_ptr<Trace> > new_traces_in_group =
1814 extract_new_traces_for_channels(group->channels(),
1815 signal_map, add_traces);
1817 // Add the traces to the group
1818 const pair<int, int> prev_v_extents = owner->v_extents();
1819 int offset = prev_v_extents.second - prev_v_extents.first;
1820 for (const shared_ptr<Trace>& trace : new_traces_in_group) {
1822 owner->add_child_item(trace);
1824 const pair<int, int> extents = trace->v_extents();
1825 if (trace->enabled())
1826 offset += -extents.first;
1827 trace->force_to_v_offset(offset);
1828 if (trace->enabled())
1829 offset += extents.second;
1832 if (new_trace_group) {
1833 // Assign proper vertical offsets to each channel in the group
1834 new_trace_group->restack_items();
1836 // If this is a new group, enqueue it in the new top level
1838 if (!new_traces_in_group.empty())
1839 new_top_level_items.push_back(new_trace_group);
1843 // Enqueue the remaining logic channels in a group
1844 vector< shared_ptr<Channel> > logic_channels;
1845 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1846 [](const shared_ptr<Channel>& c) {
1847 return c->type() == sigrok::ChannelType::LOGIC; });
1849 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1850 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1852 if (non_grouped_logic_signals.size() > 0) {
1853 const shared_ptr<TraceGroup> non_grouped_trace_group(
1854 make_shared<TraceGroup>());
1855 for (const shared_ptr<Trace>& trace : non_grouped_logic_signals)
1856 non_grouped_trace_group->add_child_item(trace);
1858 non_grouped_trace_group->restack_items();
1859 new_top_level_items.push_back(non_grouped_trace_group);
1862 // Enqueue the remaining channels as free ungrouped traces
1863 const vector< shared_ptr<Trace> > new_top_level_signals =
1864 extract_new_traces_for_channels(channels, signal_map, add_traces);
1865 new_top_level_items.insert(new_top_level_items.end(),
1866 new_top_level_signals.begin(), new_top_level_signals.end());
1868 // Enqueue any remaining traces i.e. decode traces
1869 new_top_level_items.insert(new_top_level_items.end(),
1870 add_traces.begin(), add_traces.end());
1872 // Remove any removed traces
1873 for (const shared_ptr<Trace>& trace : remove_traces) {
1874 TraceTreeItemOwner *const owner = trace->owner();
1876 owner->remove_child_item(trace);
1877 signals_added_or_removed = true;
1880 // Remove any empty trace groups
1881 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1882 if (group->child_items().size() == 0) {
1883 remove_child_item(group);
1887 // Add and position the pending top levels items
1888 int offset = v_extents().second;
1889 for (shared_ptr<TraceTreeItem> item : new_top_level_items) {
1890 add_child_item(item);
1892 // Position the item after the last item or at the top if there is none
1893 const pair<int, int> extents = item->v_extents();
1895 if (item->enabled())
1896 offset += -extents.first;
1898 item->force_to_v_offset(offset);
1900 if (item->enabled())
1901 offset += extents.second;
1902 signals_added_or_removed = true;
1906 if (signals_added_or_removed && !header_was_shrunk_)
1907 resize_header_to_fit();
1912 viewport_->update();
1914 if (reset_scrollbar)
1915 set_scroll_default();
1918 void View::capture_state_updated(int state)
1920 GlobalSettings settings;
1922 if (state == Session::Running) {
1923 set_time_unit(util::TimeUnit::Samples);
1925 trigger_markers_.clear();
1926 if (!custom_zero_offset_set_)
1927 set_zero_position(0);
1929 scale_at_acq_start_ = scale_;
1930 offset_at_acq_start_ = offset_;
1932 // Activate "always zoom to fit" if the setting is enabled and we're
1933 // the main view of this session (other trace views may be used for
1934 // zooming and we don't want to mess them up)
1935 bool state = settings.value(GlobalSettings::Key_View_ZoomToFitDuringAcq).toBool();
1936 if (is_main_view_ && state) {
1937 always_zoom_to_fit_ = true;
1938 always_zoom_to_fit_changed(always_zoom_to_fit_);
1941 // Enable sticky scrolling if the setting is enabled
1942 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
1944 // Reset all traces to segment 0
1945 current_segment_ = 0;
1946 set_current_segment(current_segment_);
1949 if (state == Session::Stopped) {
1950 // After acquisition has stopped we need to re-calculate the ticks once
1951 // as it's otherwise done when the user pans or zooms, which is too late
1952 calculate_tick_spacing();
1954 // Reset "always zoom to fit", the acquisition has stopped
1955 if (always_zoom_to_fit_) {
1956 // Perform a final zoom-to-fit before disabling
1957 zoom_fit(always_zoom_to_fit_);
1958 always_zoom_to_fit_ = false;
1959 always_zoom_to_fit_changed(always_zoom_to_fit_);
1962 bool zoom_to_fit_after_acq =
1963 settings.value(GlobalSettings::Key_View_ZoomToFitAfterAcq).toBool();
1965 // Only perform zoom-to-fit if the user hasn't altered the viewport and
1966 // we didn't restore settings in the meanwhile
1967 if (zoom_to_fit_after_acq &&
1968 !suppress_zoom_to_fit_after_acq_ &&
1969 (scale_ == scale_at_acq_start_) &&
1970 (offset_ == offset_at_acq_start_))
1971 zoom_fit(false); // We're stopped, so the GUI state doesn't matter
1973 suppress_zoom_to_fit_after_acq_ = false;
1977 void View::on_new_segment(int new_segment_id)
1979 on_segment_changed(new_segment_id);
1982 void View::on_segment_completed(int segment_id)
1984 on_segment_changed(segment_id);
1987 void View::on_segment_changed(int segment)
1989 switch (segment_display_mode_) {
1990 case Trace::ShowLastSegmentOnly:
1991 case Trace::ShowSingleSegmentOnly:
1992 set_current_segment(segment);
1995 case Trace::ShowLastCompleteSegmentOnly:
1996 // Only update if all segments are complete
1997 if (session_.all_segments_complete(segment))
1998 set_current_segment(segment);
2001 case Trace::ShowAllSegments:
2002 case Trace::ShowAccumulatedIntensity:
2008 void View::on_settingViewTriggerIsZeroTime_changed(const QVariant new_value)
2012 if (!custom_zero_offset_set_)
2013 reset_zero_position();
2016 void View::perform_delayed_view_update()
2018 if (always_zoom_to_fit_) {
2020 } else if (sticky_scrolling_) {
2021 // Make right side of the view sticky
2024 get_scroll_layout(length, offset);
2026 const QSize areaSize = viewport_->size();
2027 length = max(length - areaSize.width(), 0.0);
2029 set_offset(scale_ * length);
2032 determine_time_unit();
2035 viewport_->update();
2038 void View::process_sticky_events()
2040 if (sticky_events_ & TraceTreeItemHExtentsChanged)
2042 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
2043 restack_all_trace_tree_items();
2047 // Clear the sticky events
2051 } // namespace trace
2052 } // namespace views