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/data/signalbase.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::SignalBase;
68 using pv::data::SignalData;
69 using pv::data::Segment;
70 using pv::util::TimeUnit;
71 using pv::util::Timestamp;
73 using std::back_inserter;
77 using std::lock_guard;
80 using std::make_shared;
82 using std::numeric_limits;
85 using std::set_difference;
86 using std::shared_ptr;
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);
189 session_.metadata_obj_manager()->create_object(MetadataObjMousePos);
192 // Set up UI event handlers
193 connect(scrollarea_->horizontalScrollBar(), SIGNAL(valueChanged(int)),
194 this, SLOT(h_scroll_value_changed(int)));
195 connect(scrollarea_->verticalScrollBar(), SIGNAL(valueChanged(int)),
196 this, SLOT(v_scroll_value_changed()));
198 connect(header_, SIGNAL(selection_changed()),
199 ruler_, SLOT(clear_selection()));
200 connect(ruler_, SIGNAL(selection_changed()),
201 header_, SLOT(clear_selection()));
203 connect(header_, SIGNAL(selection_changed()),
204 this, SIGNAL(selection_changed()));
205 connect(ruler_, SIGNAL(selection_changed()),
206 this, SIGNAL(selection_changed()));
208 connect(splitter_, SIGNAL(splitterMoved(int, int)),
209 this, SLOT(on_splitter_moved()));
211 connect(&lazy_event_handler_, SIGNAL(timeout()),
212 this, SLOT(process_sticky_events()));
213 lazy_event_handler_.setSingleShot(true);
214 lazy_event_handler_.setInterval(1000 / ViewBase::MaxViewAutoUpdateRate);
216 // Set up local keyboard shortcuts
217 zoom_in_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Plus), this,
218 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
219 zoom_in_shortcut_->setAutoRepeat(false);
221 zoom_out_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Minus), this,
222 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
223 zoom_out_shortcut_->setAutoRepeat(false);
225 zoom_in_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Up), this,
226 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
227 zoom_out_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Down), this,
228 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
230 home_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Home), this,
231 SLOT(on_scroll_to_start_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
232 home_shortcut_->setAutoRepeat(false);
234 end_shortcut_ = new QShortcut(QKeySequence(Qt::Key_End), this,
235 SLOT(on_scroll_to_end_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
236 end_shortcut_->setAutoRepeat(false);
238 grab_ruler_left_shortcut_ = new QShortcut(QKeySequence(Qt::Key_1), this,
239 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
240 connect(grab_ruler_left_shortcut_, &QShortcut::activated,
241 this, [=]{on_grab_ruler(1);});
242 grab_ruler_left_shortcut_->setAutoRepeat(false);
244 grab_ruler_right_shortcut_ = new QShortcut(QKeySequence(Qt::Key_2), this,
245 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
246 connect(grab_ruler_right_shortcut_, &QShortcut::activated,
247 this, [=]{on_grab_ruler(2);});
248 grab_ruler_right_shortcut_->setAutoRepeat(false);
250 cancel_grab_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Escape), this,
251 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
252 connect(cancel_grab_shortcut_, &QShortcut::activated,
253 this, [=]{grabbed_widget_ = nullptr;});
254 cancel_grab_shortcut_->setAutoRepeat(false);
256 // Trigger the initial event manually. The default device has signals
257 // which were created before this object came into being
260 // Make sure the transparent widgets are on the top
269 GlobalSettings::remove_change_handler(this);
272 ViewType View::get_type() const
274 return ViewTypeTrace;
277 void View::reset_view_state()
279 ViewBase::reset_view_state();
281 segment_display_mode_ = Trace::ShowLastSegmentOnly;
282 segment_selectable_ = false;
287 custom_zero_offset_set_ = false;
288 updating_scroll_ = false;
289 settings_restored_ = false;
290 always_zoom_to_fit_ = false;
292 tick_prefix_ = pv::util::SIPrefix::yocto;
294 time_unit_ = util::TimeUnit::Time;
295 show_cursors_ = false;
296 cursors_ = make_shared<CursorPair>(*this);
297 next_flag_text_ = 'A';
298 trigger_markers_.clear();
299 hover_widget_ = nullptr;
300 grabbed_widget_ = nullptr;
301 hover_point_ = QPoint(-1, -1);
302 scroll_needs_defaults_ = true;
304 scale_at_acq_start_ = 0;
305 offset_at_acq_start_ = 0;
306 suppress_zoom_to_fit_after_acq_ = false;
308 show_cursors_ = false;
309 cursor_state_changed(show_cursors_);
312 // Update the zoom state
313 calculate_tick_spacing();
315 // Make sure the standard bar's segment selector is in sync
316 set_segment_display_mode(segment_display_mode_);
319 Session& View::session()
324 const Session& View::session() const
329 vector< shared_ptr<Signal> > View::signals() const
334 shared_ptr<Signal> View::get_signal_by_signalbase(shared_ptr<data::SignalBase> base) const
336 shared_ptr<Signal> ret_val;
338 for (const shared_ptr<Signal>& s : signals_)
339 if (s->base() == base) {
347 void View::clear_signalbases()
349 ViewBase::clear_signalbases();
353 void View::add_signalbase(const shared_ptr<data::SignalBase> signalbase)
355 ViewBase::add_signalbase(signalbase);
357 shared_ptr<Signal> signal;
359 switch (signalbase->type()) {
360 case SignalBase::LogicChannel:
361 signal = shared_ptr<Signal>(new LogicSignal(session_, session_.device(), signalbase));
364 case SignalBase::AnalogChannel:
365 signal = shared_ptr<Signal>(new AnalogSignal(session_, signalbase));
369 qDebug() << "Unknown signalbase type:" << signalbase->type();
374 signals_.push_back(signal);
376 signal->set_segment_display_mode(segment_display_mode_);
377 signal->set_current_segment(current_segment_);
379 // Secondary views use the signal's settings in the main view
380 if (!is_main_view()) {
381 shared_ptr<View> main_tv = dynamic_pointer_cast<View>(session_.main_view());
382 shared_ptr<Signal> main_signal = main_tv->get_signal_by_signalbase(signalbase);
384 signal->restore_settings(main_signal->save_settings());
387 connect(signal->base().get(), SIGNAL(name_changed(const QString&)),
388 this, SLOT(on_signal_name_changed()));
391 void View::remove_signalbase(const shared_ptr<data::SignalBase> signalbase)
393 ViewBase::remove_signalbase(signalbase);
395 shared_ptr<Signal> signal = get_signal_by_signalbase(signalbase);
398 remove_trace(signal);
402 void View::clear_decode_signals()
404 ViewBase::clear_decode_signals();
405 decode_traces_.clear();
408 void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
410 ViewBase::add_decode_signal(signal);
412 shared_ptr<DecodeTrace> d(
413 new DecodeTrace(session_, signal, decode_traces_.size()));
414 decode_traces_.push_back(d);
416 d->set_segment_display_mode(segment_display_mode_);
417 d->set_current_segment(current_segment_);
419 connect(signal.get(), SIGNAL(name_changed(const QString&)),
420 this, SLOT(on_signal_name_changed()));
423 void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
425 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
426 if ((*i)->base() == signal) {
427 decode_traces_.erase(i);
431 ViewBase::remove_decode_signal(signal);
435 void View::remove_trace(shared_ptr<Trace> trace)
437 TraceTreeItemOwner *const owner = trace->owner();
439 owner->remove_child_item(trace);
441 for (auto i = signals_.begin(); i != signals_.end(); i++)
447 if (!header_was_shrunk_)
448 resize_header_to_fit();
456 shared_ptr<Signal> View::get_signal_under_mouse_cursor() const
458 return signal_under_mouse_cursor_;
466 const View* View::view() const
471 Viewport* View::viewport()
476 const Viewport* View::viewport() const
481 QAbstractScrollArea* View::scrollarea() const
486 const Ruler* View::ruler() const
491 void View::save_settings(QSettings &settings) const
493 settings.setValue("scale", scale_);
494 settings.setValue("v_offset",
495 scrollarea_->verticalScrollBar()->sliderPosition());
497 settings.setValue("splitter_state", splitter_->saveState());
498 settings.setValue("segment_display_mode", segment_display_mode_);
500 GlobalSettings::store_timestamp(settings, "offset", offset_);
502 if (custom_zero_offset_set_)
503 GlobalSettings::store_timestamp(settings, "zero_offset", -zero_offset_);
505 settings.remove("zero_offset");
507 for (const shared_ptr<Signal>& signal : signals_) {
508 settings.beginGroup(signal->base()->internal_name());
509 signal->save_settings(settings);
514 void View::restore_settings(QSettings &settings)
516 // Note: It is assumed that this function is only called once,
517 // immediately after restoring a previous session.
519 if (settings.contains("scale"))
520 set_scale(settings.value("scale").toDouble());
522 if (settings.contains("offset")) {
523 // This also updates ruler_offset_
524 set_offset(GlobalSettings::restore_timestamp(settings, "offset"));
527 if (settings.contains("zero_offset"))
528 set_zero_position(GlobalSettings::restore_timestamp(settings, "zero_offset"));
530 if (settings.contains("splitter_state"))
531 splitter_->restoreState(settings.value("splitter_state").toByteArray());
533 if (settings.contains("segment_display_mode"))
534 set_segment_display_mode(
535 (Trace::SegmentDisplayMode)(settings.value("segment_display_mode").toInt()));
537 for (shared_ptr<Signal> signal : signals_) {
538 settings.beginGroup(signal->base()->internal_name());
539 signal->restore_settings(settings);
543 if (settings.contains("v_offset")) {
544 saved_v_offset_ = settings.value("v_offset").toInt();
545 set_v_offset(saved_v_offset_);
546 scroll_needs_defaults_ = false;
547 // Note: see eventFilter() for additional information
550 settings_restored_ = true;
551 suppress_zoom_to_fit_after_acq_ = true;
553 // Update the ruler so that it uses the new scale
554 calculate_tick_spacing();
557 vector< shared_ptr<TimeItem> > View::time_items() const
559 const vector<shared_ptr<Flag>> f(flags());
560 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
563 items.push_back(cursors_);
564 items.push_back(cursors_->first());
565 items.push_back(cursors_->second());
568 for (auto& trigger_marker : trigger_markers_)
569 items.push_back(trigger_marker);
574 double View::scale() const
579 void View::set_scale(double scale)
581 if (scale_ != scale) {
587 void View::set_offset(const pv::util::Timestamp& offset, bool force_update)
589 if ((offset_ != offset) || force_update) {
591 ruler_offset_ = offset_ + zero_offset_;
593 const int w = viewport_->width();
595 const double samplerate = session_.get_samplerate();
596 // Note: sample_num = time * samplerate
597 // Note: samples_per_pixel = samplerate * scale
598 int64_t start_sample = (offset_ * samplerate).convert_to<int64_t>();
599 int64_t end_sample = (offset_ * samplerate).convert_to<int64_t>() +
600 (w * session_.get_samplerate() * scale_);
602 MetadataObject* md_obj =
603 session_.metadata_obj_manager()->find_object_by_type(MetadataObjMainViewRange);
604 md_obj->set_value(MetadataValueStartSample, QVariant((qlonglong)start_sample));
605 md_obj->set_value(MetadataValueEndSample, QVariant((qlonglong)end_sample));
612 const Timestamp& View::offset() const
617 const Timestamp& View::ruler_offset() const
619 return ruler_offset_;
622 void View::set_zero_position(const pv::util::Timestamp& position)
624 zero_offset_ = -position;
625 custom_zero_offset_set_ = true;
627 // Force an immediate update of the offsets
628 set_offset(offset_, true);
632 void View::reset_zero_position()
636 // When enabled, the first trigger for this segment is used as the zero position
637 GlobalSettings settings;
638 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
640 if (trigger_is_zero_time) {
641 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
643 if (triggers.size() > 0)
644 zero_offset_ = triggers.front();
647 custom_zero_offset_set_ = false;
649 // Force an immediate update of the offsets
650 set_offset(offset_, true);
654 pv::util::Timestamp View::zero_offset() const
659 int View::owner_visual_v_offset() const
661 return -scrollarea_->verticalScrollBar()->sliderPosition();
664 void View::set_v_offset(int offset)
666 scrollarea_->verticalScrollBar()->setSliderPosition(offset);
671 void View::set_h_offset(int offset)
673 scrollarea_->horizontalScrollBar()->setSliderPosition(offset);
678 int View::get_h_scrollbar_maximum() const
680 return scrollarea_->horizontalScrollBar()->maximum();
683 unsigned int View::depth() const
688 uint32_t View::current_segment() const
690 return current_segment_;
693 pv::util::SIPrefix View::tick_prefix() const
698 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
700 if (tick_prefix_ != tick_prefix) {
701 tick_prefix_ = tick_prefix;
702 tick_prefix_changed();
706 unsigned int View::tick_precision() const
708 return tick_precision_;
711 void View::set_tick_precision(unsigned tick_precision)
713 if (tick_precision_ != tick_precision) {
714 tick_precision_ = tick_precision;
715 tick_precision_changed();
719 const pv::util::Timestamp& View::tick_period() const
724 unsigned int View::minor_tick_count() const
726 return minor_tick_count_;
729 void View::set_tick_period(const pv::util::Timestamp& tick_period)
731 if (tick_period_ != tick_period) {
732 tick_period_ = tick_period;
733 tick_period_changed();
737 TimeUnit View::time_unit() const
742 void View::set_time_unit(pv::util::TimeUnit time_unit)
744 if (time_unit_ != time_unit) {
745 time_unit_ = time_unit;
750 void View::set_current_segment(uint32_t segment_id)
752 current_segment_ = segment_id;
754 for (const shared_ptr<Signal>& signal : signals_)
755 signal->set_current_segment(current_segment_);
757 for (shared_ptr<DecodeTrace>& dt : decode_traces_)
758 dt->set_current_segment(current_segment_);
761 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
763 trigger_markers_.clear();
764 for (util::Timestamp timestamp : triggers)
765 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, timestamp));
767 if (!custom_zero_offset_set_)
768 reset_zero_position();
772 segment_changed(segment_id);
775 bool View::segment_is_selectable() const
777 return segment_selectable_;
780 Trace::SegmentDisplayMode View::segment_display_mode() const
782 return segment_display_mode_;
785 void View::set_segment_display_mode(Trace::SegmentDisplayMode mode)
787 segment_display_mode_ = mode;
789 for (const shared_ptr<Signal>& signal : signals_)
790 signal->set_segment_display_mode(mode);
792 uint32_t last_segment = session_.get_segment_count() - 1;
795 case Trace::ShowLastSegmentOnly:
796 if (current_segment_ != last_segment)
797 set_current_segment(last_segment);
800 case Trace::ShowLastCompleteSegmentOnly:
801 // Do nothing if we only have one segment so far
802 if (last_segment > 0) {
803 // If the last segment isn't complete, the previous one must be
804 uint32_t segment_id =
805 (session_.all_segments_complete(last_segment)) ?
806 last_segment : last_segment - 1;
808 if (current_segment_ != segment_id)
809 set_current_segment(segment_id);
813 case Trace::ShowSingleSegmentOnly:
814 case Trace::ShowAllSegments:
815 case Trace::ShowAccumulatedIntensity:
817 // Current segment remains as-is
821 segment_selectable_ = true;
823 if ((mode == Trace::ShowAllSegments) || (mode == Trace::ShowAccumulatedIntensity))
824 segment_selectable_ = false;
828 segment_display_mode_changed((int)mode, segment_selectable_);
831 void View::zoom(double steps)
833 zoom(steps, viewport_->width() / 2);
836 void View::zoom(double steps, int offset)
838 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
841 void View::zoom_fit(bool gui_state)
843 // Act as one-shot when stopped, toggle along with the GUI otherwise
844 if (session_.get_capture_state() == Session::Stopped) {
845 always_zoom_to_fit_ = false;
846 always_zoom_to_fit_changed(false);
848 always_zoom_to_fit_ = gui_state;
849 always_zoom_to_fit_changed(gui_state);
852 const pair<Timestamp, Timestamp> extents = get_time_extents();
853 const Timestamp delta = extents.second - extents.first;
854 if (delta < Timestamp("1e-12"))
858 const int w = viewport_->width();
862 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
863 set_scale_offset(scale.convert_to<double>(), extents.first);
866 void View::focus_on_range(uint64_t start_sample, uint64_t end_sample)
869 const int w = viewport_->width();
873 const double samplerate = session_.get_samplerate();
875 const uint64_t sample_delta = (end_sample - start_sample);
877 // Note: We add 20% margin on the left and 5% on the right
878 const Timestamp delta = (sample_delta * 1.25) / samplerate;
880 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
881 const Timestamp offset = (start_sample - sample_delta * 0.20) / samplerate;
883 set_scale_offset(scale.convert_to<double>(), offset);
886 void View::set_scale_offset(double scale, const Timestamp& offset)
888 // Disable sticky scrolling / always zoom to fit when acquisition runs
889 // and user drags the viewport
890 if ((scale_ == scale) && (offset_ != offset) &&
891 (session_.get_capture_state() == Session::Running)) {
893 if (sticky_scrolling_) {
894 sticky_scrolling_ = false;
895 sticky_scrolling_changed(false);
898 if (always_zoom_to_fit_) {
899 always_zoom_to_fit_ = false;
900 always_zoom_to_fit_changed(false);
907 calculate_tick_spacing();
914 vector< shared_ptr<SignalData> > View::get_visible_data() const
916 // Make a set of all the visible data objects
917 vector< shared_ptr<SignalData> > visible_data;
918 for (const shared_ptr<Signal>& sig : signals_)
920 visible_data.push_back(sig->data());
925 pair<Timestamp, Timestamp> View::get_time_extents() const
927 boost::optional<Timestamp> left_time, right_time;
929 vector< shared_ptr<SignalData> > data;
930 if (signals_.size() == 0)
931 return make_pair(0, 0);
933 data.push_back(signals_.front()->data());
935 for (const shared_ptr<SignalData>& d : data) {
936 const vector< shared_ptr<Segment> > segments = d->segments();
937 for (const shared_ptr<Segment>& s : segments) {
938 double samplerate = s->samplerate();
939 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
941 const Timestamp start_time = s->start_time();
942 left_time = left_time ?
943 min(*left_time, start_time) :
945 right_time = right_time ?
946 max(*right_time, start_time + d->max_sample_count() / samplerate) :
947 start_time + d->max_sample_count() / samplerate;
951 if (!left_time || !right_time)
952 return make_pair(0, 0);
954 assert(*left_time <= *right_time);
955 return make_pair(*left_time, *right_time);
958 bool View::colored_bg() const
963 bool View::cursors_shown() const
965 return show_cursors_;
968 void View::show_cursors(bool show)
970 if (show_cursors_ != show) {
971 show_cursors_ = show;
973 cursor_state_changed(show);
979 void View::set_cursors(pv::util::Timestamp& first, pv::util::Timestamp& second)
983 cursors_->first()->set_time(first);
984 cursors_->second()->set_time(second);
990 void View::center_cursors()
994 const double time_width = scale_ * viewport_->width();
995 cursors_->first()->set_time(offset_ + time_width * 0.4);
996 cursors_->second()->set_time(offset_ + time_width * 0.6);
1002 shared_ptr<CursorPair> View::cursors() const
1007 shared_ptr<Flag> View::add_flag(const Timestamp& time)
1009 shared_ptr<Flag> flag =
1010 make_shared<Flag>(*this, time, QString("%1").arg(next_flag_text_));
1011 flags_.push_back(flag);
1013 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
1014 (next_flag_text_ + 1);
1016 time_item_appearance_changed(true, true);
1020 void View::remove_flag(shared_ptr<Flag> flag)
1022 flags_.remove(flag);
1023 time_item_appearance_changed(true, true);
1026 vector< shared_ptr<Flag> > View::flags() const
1028 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
1029 stable_sort(flags.begin(), flags.end(),
1030 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
1031 return a->time() < b->time();
1037 const QPoint& View::hover_point() const
1039 return hover_point_;
1042 const QWidget* View::hover_widget() const
1044 return hover_widget_;
1047 int64_t View::get_nearest_level_change(const QPoint &p)
1049 // Is snapping disabled?
1050 if (snap_distance_ == 0)
1054 entry_t(shared_ptr<Signal> s) :
1055 signal(s), delta(numeric_limits<int64_t>::max()), sample(-1), is_dense(false) {}
1056 shared_ptr<Signal> signal;
1062 vector<entry_t> list;
1064 // Create list of signals to consider
1065 if (signal_under_mouse_cursor_)
1066 list.emplace_back(signal_under_mouse_cursor_);
1068 for (shared_ptr<Signal> s : signals_) {
1072 list.emplace_back(s);
1075 // Get data for listed signals
1076 for (entry_t &e : list) {
1077 // Calculate sample number from cursor position
1078 const double samples_per_pixel = e.signal->base()->get_samplerate() * scale();
1079 const int64_t x_offset = offset().convert_to<double>() / scale();
1080 const int64_t sample_num = max(((x_offset + p.x()) * samples_per_pixel), 0.0);
1082 vector<data::LogicSegment::EdgePair> edges =
1083 e.signal->get_nearest_level_changes(sample_num);
1089 const int64_t first_sample_delta = abs(sample_num - edges.front().first);
1090 const int64_t first_delta = first_sample_delta / samples_per_pixel;
1091 e.delta = first_delta;
1092 e.sample = edges.front().first;
1094 // Check second edge if available
1095 if (edges.size() == 2) {
1096 // Note: -1 because this is usually the right edge and sample points are left-aligned
1097 const int64_t second_sample_delta = abs(sample_num - edges.back().first - 1);
1098 const int64_t second_delta = second_sample_delta / samples_per_pixel;
1100 // If both edges are too close, we mark this signal as being dense
1101 if ((first_delta + second_delta) <= snap_distance_)
1104 if (second_delta < first_delta) {
1105 e.delta = second_delta;
1106 e.sample = edges.back().first;
1111 // Look for the best match: non-dense first, then dense
1112 entry_t *match = nullptr;
1114 for (entry_t &e : list) {
1115 if (e.delta > snap_distance_ || e.is_dense)
1119 if (e.delta < match->delta)
1126 for (entry_t &e : list) {
1131 if (e.delta < match->delta)
1139 // Somewhat ugly hack to make TimeItem::drag_by() work
1140 signal_under_mouse_cursor_ = match->signal;
1142 return match->sample;
1148 void View::restack_all_trace_tree_items()
1150 // Make a list of owners that is sorted from deepest first
1151 const vector<shared_ptr<TraceTreeItem>> items(
1152 list_by_type<TraceTreeItem>());
1153 set< TraceTreeItemOwner* > owners;
1154 for (const auto &r : items)
1155 owners.insert(r->owner());
1156 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
1157 sort(sorted_owners.begin(), sorted_owners.end(),
1158 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
1159 return a->depth() > b->depth(); });
1161 // Restack the items recursively
1162 for (auto &o : sorted_owners)
1165 // Animate the items to their destination
1166 for (const auto &i : items)
1167 i->animate_to_layout_v_offset();
1170 int View::header_width() const
1172 return header_->extended_size_hint().width();
1175 void View::on_setting_changed(const QString &key, const QVariant &value)
1177 GlobalSettings settings;
1179 if (key == GlobalSettings::Key_View_ColoredBG) {
1180 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
1181 viewport_->update();
1184 if ((key == GlobalSettings::Key_View_ShowSamplingPoints) ||
1185 (key == GlobalSettings::Key_View_ShowAnalogMinorGrid))
1186 viewport_->update();
1188 if (key == GlobalSettings::Key_View_TriggerIsZeroTime)
1189 on_settingViewTriggerIsZeroTime_changed(value);
1191 if (key == GlobalSettings::Key_View_SnapDistance)
1192 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
1195 void View::trigger_event(int segment_id, util::Timestamp location)
1197 // TODO This doesn't work if we're showing multiple segments at once
1198 if ((uint32_t)segment_id != current_segment_)
1201 if (!custom_zero_offset_set_)
1202 reset_zero_position();
1204 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
1207 void View::get_scroll_layout(double &length, Timestamp &offset) const
1209 const pair<Timestamp, Timestamp> extents = get_time_extents();
1210 length = ((extents.second - extents.first) / scale_).convert_to<double>();
1211 offset = offset_ / scale_;
1214 void View::set_zoom(double scale, int offset)
1216 // Reset the "always zoom to fit" feature as the user changed the zoom
1217 always_zoom_to_fit_ = false;
1218 always_zoom_to_fit_changed(false);
1220 const Timestamp cursor_offset = offset_ + scale_ * offset;
1221 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
1222 const Timestamp new_offset = cursor_offset - new_scale * offset;
1223 set_scale_offset(new_scale.convert_to<double>(), new_offset);
1226 void View::calculate_tick_spacing()
1228 const double SpacingIncrement = 10.0f;
1229 const double MinValueSpacing = 40.0f;
1231 // Figure out the highest numeric value visible on a label
1232 const QSize areaSize = viewport_->size();
1233 const Timestamp max_time = max(fabs(offset_),
1234 fabs(offset_ + scale_ * areaSize.width()));
1236 double min_width = SpacingIncrement;
1237 double label_width, tick_period_width;
1239 QFontMetrics m(QApplication::font());
1241 // Copies of the member variables with the same name, used in the calculation
1242 // and written back afterwards, so that we don't emit signals all the time
1243 // during the calculation.
1244 pv::util::Timestamp tick_period = tick_period_;
1245 pv::util::SIPrefix tick_prefix = tick_prefix_;
1246 unsigned tick_precision = tick_precision_;
1249 const double min_period = scale_ * min_width;
1251 const int order = (int)floorf(log10f(min_period));
1252 const pv::util::Timestamp order_decimal =
1253 pow(pv::util::Timestamp(10), order);
1255 // Allow for a margin of error so that a scale unit of 1 can be used.
1256 // Otherwise, for a SU of 1 the tick period will almost always be below
1257 // the min_period by a small amount - and thus skipped in favor of 2.
1258 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
1259 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
1260 double tp_with_margin;
1261 unsigned int unit = 0;
1264 tp_with_margin = order_decimal.convert_to<double>() *
1265 (ScaleUnits[unit++] + tp_margin);
1266 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
1268 minor_tick_count_ = (unit == 2) ? 4 : 5;
1269 tick_period = order_decimal * ScaleUnits[unit - 1];
1270 tick_prefix = static_cast<pv::util::SIPrefix>(
1271 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
1273 // Precision is the number of fractional digits required, not
1274 // taking the prefix into account (and it must never be negative)
1275 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
1277 tick_period_width = (tick_period / scale_).convert_to<double>();
1279 const QString label_text = Ruler::format_time_with_distance(
1280 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
1282 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
1283 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
1286 min_width += SpacingIncrement;
1287 } while (tick_period_width < label_width);
1289 set_tick_period(tick_period);
1290 set_tick_prefix(tick_prefix);
1291 set_tick_precision(tick_precision);
1294 void View::adjust_top_margin()
1298 const QSize areaSize = viewport_->size();
1300 const pair<int, int> extents = v_extents();
1301 const int top_margin = owner_visual_v_offset() + extents.first;
1302 const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second;
1304 // Do we have empty space at the top while the last trace goes out of screen?
1305 if ((top_margin > 0) && (trace_bottom > areaSize.height())) {
1306 const int trace_height = extents.second - extents.first;
1308 // Center everything vertically if there is enough space
1309 if (areaSize.height() >= trace_height)
1310 set_v_offset(extents.first -
1311 ((areaSize.height() - trace_height) / 2));
1313 // Remove the top margin to make as many traces fit on screen as possible
1314 set_v_offset(extents.first);
1318 void View::update_scroll()
1321 QScrollBar *hscrollbar = scrollarea_->horizontalScrollBar();
1322 QScrollBar *vscrollbar = scrollarea_->verticalScrollBar();
1324 const QSize areaSize = viewport_->size();
1326 // Set the horizontal scroll bar
1329 get_scroll_layout(length, offset);
1330 length = max(length - areaSize.width(), 0.0);
1332 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
1334 hscrollbar->setPageStep(areaSize.width() / 2);
1335 hscrollbar->setSingleStep(major_tick_distance);
1337 updating_scroll_ = true;
1339 if (length < MaxScrollValue) {
1340 hscrollbar->setRange(0, length);
1341 hscrollbar->setSliderPosition(offset.convert_to<double>());
1343 hscrollbar->setRange(0, MaxScrollValue);
1344 hscrollbar->setSliderPosition(
1345 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
1348 updating_scroll_ = false;
1350 // Set the vertical scrollbar
1351 vscrollbar->setPageStep(areaSize.height());
1352 vscrollbar->setSingleStep(areaSize.height() / 8);
1354 const pair<int, int> extents = v_extents();
1356 // Don't change the scrollbar range if there are no traces
1357 if (extents.first != extents.second) {
1358 int top_margin = ViewScrollMargin;
1359 int btm_margin = ViewScrollMargin;
1361 vscrollbar->setRange(extents.first - areaSize.height() + top_margin,
1362 extents.second - btm_margin);
1365 if (scroll_needs_defaults_) {
1366 set_scroll_default();
1367 scroll_needs_defaults_ = false;
1371 void View::reset_scroll()
1373 scrollarea_->verticalScrollBar()->setRange(0, 0);
1376 void View::set_scroll_default()
1380 const QSize areaSize = viewport_->size();
1382 const pair<int, int> extents = v_extents();
1383 const int trace_height = extents.second - extents.first;
1385 // Do all traces fit in the view?
1386 if (areaSize.height() >= trace_height)
1387 // Center all traces vertically
1388 set_v_offset(extents.first -
1389 ((areaSize.height() - trace_height) / 2));
1391 // Put the first trace at the top, letting the bottom ones overflow
1392 set_v_offset(extents.first);
1395 void View::determine_if_header_was_shrunk()
1397 const int header_pane_width =
1398 splitter_->sizes().front(); // clazy:exclude=detaching-temporary
1400 // Allow for a slight margin of error so that we also accept
1401 // slight differences when e.g. a label name change increased
1402 // the overall width
1403 header_was_shrunk_ = (header_pane_width < (header_width() - 10));
1406 void View::resize_header_to_fit()
1408 // Setting the maximum width of the header widget doesn't work as
1409 // expected because the splitter would allow the user to make the
1410 // pane wider than that, creating empty space as a result.
1411 // To make this work, we stricly enforce the maximum width by
1412 // expanding the header unless the user shrunk it on purpose.
1413 // As we're then setting the width of the header pane, we set the
1414 // splitter to the maximum allowed position.
1416 int splitter_area_width = 0;
1417 for (int w : splitter_->sizes()) // clazy:exclude=range-loop
1418 splitter_area_width += w;
1420 // Make sure the header has enough horizontal space to show all labels fully
1421 QList<int> pane_sizes;
1422 pane_sizes.push_back(header_->extended_size_hint().width());
1423 pane_sizes.push_back(splitter_area_width - header_->extended_size_hint().width());
1424 splitter_->setSizes(pane_sizes);
1427 void View::update_layout()
1432 TraceTreeItemOwner* View::find_prevalent_trace_group(
1433 const shared_ptr<sigrok::ChannelGroup> &group,
1434 const map<shared_ptr<data::SignalBase>, shared_ptr<Signal> > &signal_map)
1438 set<TraceTreeItemOwner*> owners;
1439 vector<TraceTreeItemOwner*> owner_list;
1441 // Make a set and a list of all the owners
1442 for (const auto& channel : group->channels()) {
1443 for (auto& entry : signal_map) {
1444 if (entry.first->channel() == channel) {
1445 TraceTreeItemOwner *const o = (entry.second)->owner();
1446 owner_list.push_back(o);
1452 // Iterate through the list of owners, and find the most prevalent
1453 size_t max_prevalence = 0;
1454 TraceTreeItemOwner *prevalent_owner = nullptr;
1455 for (TraceTreeItemOwner *owner : owners) {
1456 const size_t prevalence = count_if(
1457 owner_list.begin(), owner_list.end(),
1458 [&](TraceTreeItemOwner *o) { return o == owner; });
1459 if (prevalence > max_prevalence) {
1460 max_prevalence = prevalence;
1461 prevalent_owner = owner;
1465 return prevalent_owner;
1468 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
1469 const vector< shared_ptr<sigrok::Channel> > &channels,
1470 const map<shared_ptr<data::SignalBase>, shared_ptr<Signal> > &signal_map,
1471 set< shared_ptr<Trace> > &add_list)
1473 vector< shared_ptr<Trace> > filtered_traces;
1475 for (const auto& channel : channels) {
1476 for (auto& entry : signal_map) {
1477 if (entry.first->channel() == channel) {
1478 shared_ptr<Trace> trace = entry.second;
1479 const auto list_iter = add_list.find(trace);
1480 if (list_iter == add_list.end())
1483 filtered_traces.push_back(trace);
1484 add_list.erase(list_iter);
1489 return filtered_traces;
1492 void View::determine_time_unit()
1494 // Check whether we know the sample rate and hence can use time as the unit
1495 if (time_unit_ == util::TimeUnit::Samples) {
1496 // Check all signals but...
1497 for (const shared_ptr<Signal>& signal : signals_) {
1498 const shared_ptr<SignalData> data = signal->data();
1500 // ...only check first segment of each
1501 const vector< shared_ptr<Segment> > segments = data->segments();
1502 if (!segments.empty())
1503 if (segments[0]->samplerate()) {
1504 set_time_unit(util::TimeUnit::Time);
1511 bool View::eventFilter(QObject *object, QEvent *event)
1513 const QEvent::Type type = event->type();
1515 if (type == QEvent::MouseMove) {
1518 hover_widget_ = qobject_cast<QWidget*>(object);
1520 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1521 if (object == viewport_)
1522 hover_point_ = mouse_event->pos();
1523 else if (object == ruler_)
1524 hover_point_ = mouse_event->pos();
1525 else if (object == header_)
1526 hover_point_ = QPoint(0, mouse_event->y());
1528 hover_point_ = QPoint(-1, -1);
1530 update_hover_point();
1532 if (grabbed_widget_) {
1533 int64_t nearest = get_nearest_level_change(hover_point_);
1534 pv::util::Timestamp mouse_time = offset_ + hover_point_.x() * scale_;
1536 if (nearest == -1) {
1537 grabbed_widget_->set_time(mouse_time);
1539 grabbed_widget_->set_time(nearest / get_signal_under_mouse_cursor()->base()->get_samplerate());
1543 } else if (type == QEvent::MouseButtonPress) {
1544 grabbed_widget_ = nullptr;
1546 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1547 if ((object == viewport_) && (mouse_event->button() & Qt::LeftButton)) {
1548 // Send event to all trace tree items
1549 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1550 list_by_type<TraceTreeItem>());
1551 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1552 r->mouse_left_press_event(mouse_event);
1554 } else if (type == QEvent::Leave) {
1555 hover_point_ = QPoint(-1, -1);
1556 update_hover_point();
1557 } else if (type == QEvent::Show) {
1559 // This is somewhat of a hack, unfortunately. We cannot use
1560 // set_v_offset() from within restore_settings() as the view
1561 // at that point is neither visible nor properly sized.
1562 // This is the least intrusive workaround I could come up
1563 // with: set the vertical offset (or scroll defaults) when
1564 // the view is shown, which happens after all widgets were
1565 // resized to their final sizes.
1568 if (settings_restored_)
1569 determine_if_header_was_shrunk();
1571 resize_header_to_fit();
1573 if (scroll_needs_defaults_) {
1574 set_scroll_default();
1575 scroll_needs_defaults_ = false;
1578 if (saved_v_offset_) {
1579 set_v_offset(saved_v_offset_);
1580 saved_v_offset_ = 0;
1584 return QObject::eventFilter(object, event);
1587 void View::contextMenuEvent(QContextMenuEvent *event)
1589 QPoint pos = event->pos() - QPoint(0, ruler_->sizeHint().height());
1591 const shared_ptr<ViewItem> r = viewport_->get_mouse_over_item(pos);
1595 QMenu *menu = r->create_view_context_menu(this, pos);
1597 menu->popup(event->globalPos());
1600 void View::resizeEvent(QResizeEvent* event)
1602 // Only adjust the top margin if we shrunk vertically
1603 if (event->size().height() < event->oldSize().height())
1604 adjust_top_margin();
1609 void View::update_hover_point()
1611 // Determine signal that the mouse cursor is hovering over
1612 signal_under_mouse_cursor_.reset();
1613 if (hover_widget_ == this) {
1614 for (const shared_ptr<Signal>& s : signals_) {
1615 const pair<int, int> extents = s->v_extents();
1616 const int top = s->get_visual_y() + extents.first;
1617 const int btm = s->get_visual_y() + extents.second;
1618 if ((hover_point_.y() >= top) && (hover_point_.y() <= btm)
1619 && s->base()->enabled())
1620 signal_under_mouse_cursor_ = s;
1624 // Update all trace tree items
1625 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1626 list_by_type<TraceTreeItem>());
1627 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1628 r->hover_point_changed(hover_point_);
1630 // Notify this view's listeners
1631 hover_point_changed(hover_widget_, hover_point_);
1633 // Hover point is -1 when invalid and 0 for the header
1634 if (hover_point_.x() > 0) {
1635 // Notify global listeners
1636 pv::util::Timestamp mouse_time = offset_ + hover_point_.x() * scale_;
1637 int64_t sample_num = (mouse_time * session_.get_samplerate()).convert_to<int64_t>();
1639 MetadataObject* md_obj =
1640 session_.metadata_obj_manager()->find_object_by_type(MetadataObjMousePos);
1641 md_obj->set_value(MetadataValueStartSample, QVariant((qlonglong)sample_num));
1645 void View::row_item_appearance_changed(bool label, bool content)
1650 viewport_->update();
1653 void View::time_item_appearance_changed(bool label, bool content)
1658 // Make sure the header pane width is updated, too
1663 viewport_->update();
1666 void View::extents_changed(bool horz, bool vert)
1669 (horz ? TraceTreeItemHExtentsChanged : 0) |
1670 (vert ? TraceTreeItemVExtentsChanged : 0);
1672 if (!lazy_event_handler_.isActive())
1673 lazy_event_handler_.start();
1676 void View::on_signal_name_changed()
1678 if (!header_was_shrunk_)
1679 resize_header_to_fit();
1682 void View::on_splitter_moved()
1684 // The header can only shrink when the splitter is moved manually
1685 determine_if_header_was_shrunk();
1687 if (!header_was_shrunk_)
1688 resize_header_to_fit();
1691 void View::on_zoom_in_shortcut_triggered()
1696 void View::on_zoom_out_shortcut_triggered()
1701 void View::on_scroll_to_start_shortcut_triggered()
1706 void View::on_scroll_to_end_shortcut_triggered()
1708 set_h_offset(get_h_scrollbar_maximum());
1711 void View::h_scroll_value_changed(int value)
1713 if (updating_scroll_)
1716 // Disable sticky scrolling when user moves the horizontal scroll bar
1717 // during a running acquisition
1718 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1719 sticky_scrolling_ = false;
1720 sticky_scrolling_changed(false);
1723 const int range = scrollarea_->horizontalScrollBar()->maximum();
1724 if (range < MaxScrollValue)
1725 set_offset(scale_ * value);
1729 get_scroll_layout(length, offset);
1730 set_offset(scale_ * length * value / MaxScrollValue);
1734 viewport_->update();
1737 void View::v_scroll_value_changed()
1740 viewport_->update();
1743 void View::on_grab_ruler(int ruler_id)
1745 if (!cursors_shown()) {
1750 // Release the grabbed widget if its trigger hotkey was pressed twice
1752 grabbed_widget_ = (grabbed_widget_ == cursors_->first().get()) ?
1753 nullptr : cursors_->first().get();
1755 grabbed_widget_ = (grabbed_widget_ == cursors_->second().get()) ?
1756 nullptr : cursors_->second().get();
1758 if (grabbed_widget_)
1759 grabbed_widget_->set_time(ruler_->get_absolute_time_from_x_pos(
1760 mapFromGlobal(QCursor::pos()).x() - header_width()));
1763 void View::signals_changed()
1765 using sigrok::Channel;
1767 lock_guard<mutex> lock(signal_mutex_);
1769 vector< shared_ptr<Channel> > channels;
1770 shared_ptr<sigrok::Device> sr_dev;
1771 bool signals_added_or_removed = false;
1773 // Do we need to set the vertical scrollbar to its default position later?
1774 // We do if there are no traces, i.e. the scroll bar has no range set
1775 bool reset_scrollbar =
1776 (scrollarea_->verticalScrollBar()->minimum() ==
1777 scrollarea_->verticalScrollBar()->maximum());
1779 if (!session_.device()) {
1783 sr_dev = session_.device()->device();
1785 channels = sr_dev->channels();
1788 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1790 // Make a list of traces that are being added, and a list of traces
1791 // that are being removed. The set_difference() algorithms require
1792 // both sets to be in the exact same order, which means that PD signals
1793 // must always be last as they interrupt the sort order otherwise
1794 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1795 const set<shared_ptr<Trace>> prev_traces(
1796 prev_trace_list.begin(), prev_trace_list.end());
1798 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1800 #ifdef ENABLE_DECODE
1801 traces.insert(decode_traces_.begin(), decode_traces_.end());
1803 set< shared_ptr<Trace> > add_traces;
1804 set_difference(traces.begin(), traces.end(),
1805 prev_traces.begin(), prev_traces.end(),
1806 inserter(add_traces, add_traces.begin()));
1808 set< shared_ptr<Trace> > remove_traces;
1809 set_difference(prev_traces.begin(), prev_traces.end(),
1810 traces.begin(), traces.end(),
1811 inserter(remove_traces, remove_traces.begin()));
1813 // Make a look-up table of sigrok Channels to pulseview Signals
1814 map<shared_ptr<data::SignalBase>, shared_ptr<Signal> > signal_map;
1815 for (const shared_ptr<Signal>& sig : signals_)
1816 signal_map[sig->base()] = sig;
1818 // Populate channel groups
1820 for (auto& entry : sr_dev->channel_groups()) {
1821 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1823 if (group->channels().size() <= 1)
1826 // Find best trace group to add to
1827 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1830 // If there is no trace group, create one
1831 shared_ptr<TraceGroup> new_trace_group;
1833 new_trace_group.reset(new TraceGroup());
1834 owner = new_trace_group.get();
1837 // Extract traces for the trace group, removing them from
1839 const vector< shared_ptr<Trace> > new_traces_in_group =
1840 extract_new_traces_for_channels(group->channels(),
1841 signal_map, add_traces);
1843 // Add the traces to the group
1844 const pair<int, int> prev_v_extents = owner->v_extents();
1845 int offset = prev_v_extents.second - prev_v_extents.first;
1846 for (const shared_ptr<Trace>& trace : new_traces_in_group) {
1848 owner->add_child_item(trace);
1850 const pair<int, int> extents = trace->v_extents();
1851 if (trace->enabled())
1852 offset += -extents.first;
1853 trace->force_to_v_offset(offset);
1854 if (trace->enabled())
1855 offset += extents.second;
1858 if (new_trace_group) {
1859 // Assign proper vertical offsets to each channel in the group
1860 new_trace_group->restack_items();
1862 // If this is a new group, enqueue it in the new top level
1864 if (!new_traces_in_group.empty())
1865 new_top_level_items.push_back(new_trace_group);
1869 // Enqueue the remaining logic channels in a group
1870 vector< shared_ptr<Channel> > logic_channels;
1871 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1872 [](const shared_ptr<Channel>& c) {
1873 return c->type() == sigrok::ChannelType::LOGIC; });
1875 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1876 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1878 if (non_grouped_logic_signals.size() > 0) {
1879 const shared_ptr<TraceGroup> non_grouped_trace_group(
1880 make_shared<TraceGroup>());
1881 for (const shared_ptr<Trace>& trace : non_grouped_logic_signals)
1882 non_grouped_trace_group->add_child_item(trace);
1884 non_grouped_trace_group->restack_items();
1885 new_top_level_items.push_back(non_grouped_trace_group);
1888 // Enqueue the remaining channels as free ungrouped traces
1889 const vector< shared_ptr<Trace> > new_top_level_signals =
1890 extract_new_traces_for_channels(channels, signal_map, add_traces);
1891 new_top_level_items.insert(new_top_level_items.end(),
1892 new_top_level_signals.begin(), new_top_level_signals.end());
1894 // Enqueue any remaining traces i.e. decode traces
1895 new_top_level_items.insert(new_top_level_items.end(),
1896 add_traces.begin(), add_traces.end());
1898 // Remove any removed traces
1899 for (const shared_ptr<Trace>& trace : remove_traces) {
1900 TraceTreeItemOwner *const owner = trace->owner();
1902 owner->remove_child_item(trace);
1903 signals_added_or_removed = true;
1906 // Remove any empty trace groups
1907 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1908 if (group->child_items().size() == 0) {
1909 remove_child_item(group);
1913 // Add and position the pending top levels items
1914 int offset = v_extents().second;
1915 for (shared_ptr<TraceTreeItem> item : new_top_level_items) {
1916 // items may already have gained an owner when they were added to a group above
1920 add_child_item(item);
1922 // Position the item after the last item or at the top if there is none
1923 const pair<int, int> extents = item->v_extents();
1925 if (item->enabled())
1926 offset += -extents.first;
1928 item->force_to_v_offset(offset);
1930 if (item->enabled())
1931 offset += extents.second;
1932 signals_added_or_removed = true;
1936 if (signals_added_or_removed && !header_was_shrunk_)
1937 resize_header_to_fit();
1942 viewport_->update();
1944 if (reset_scrollbar)
1945 set_scroll_default();
1948 void View::capture_state_updated(int state)
1950 GlobalSettings settings;
1952 if (state == Session::Running) {
1953 set_time_unit(util::TimeUnit::Samples);
1955 trigger_markers_.clear();
1956 if (!custom_zero_offset_set_)
1957 set_zero_position(0);
1959 scale_at_acq_start_ = scale_;
1960 offset_at_acq_start_ = offset_;
1962 // Activate "always zoom to fit" if the setting is enabled and we're
1963 // the main view of this session (other trace views may be used for
1964 // zooming and we don't want to mess them up)
1965 bool state = settings.value(GlobalSettings::Key_View_ZoomToFitDuringAcq).toBool();
1966 if (is_main_view_ && state) {
1967 always_zoom_to_fit_ = true;
1968 always_zoom_to_fit_changed(always_zoom_to_fit_);
1971 // Enable sticky scrolling if the setting is enabled
1972 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
1974 // Reset all traces to segment 0
1975 current_segment_ = 0;
1976 set_current_segment(current_segment_);
1979 if (state == Session::Stopped) {
1980 // After acquisition has stopped we need to re-calculate the ticks once
1981 // as it's otherwise done when the user pans or zooms, which is too late
1982 calculate_tick_spacing();
1984 // Reset "always zoom to fit", the acquisition has stopped
1985 if (always_zoom_to_fit_) {
1986 // Perform a final zoom-to-fit before disabling
1987 zoom_fit(always_zoom_to_fit_);
1988 always_zoom_to_fit_ = false;
1989 always_zoom_to_fit_changed(always_zoom_to_fit_);
1992 bool zoom_to_fit_after_acq =
1993 settings.value(GlobalSettings::Key_View_ZoomToFitAfterAcq).toBool();
1995 // Only perform zoom-to-fit if the user hasn't altered the viewport and
1996 // we didn't restore settings in the meanwhile
1997 if (zoom_to_fit_after_acq &&
1998 !suppress_zoom_to_fit_after_acq_ &&
1999 (scale_ == scale_at_acq_start_) &&
2000 (offset_ == offset_at_acq_start_))
2001 zoom_fit(false); // We're stopped, so the GUI state doesn't matter
2003 suppress_zoom_to_fit_after_acq_ = false;
2007 void View::on_new_segment(int new_segment_id)
2009 on_segment_changed(new_segment_id);
2012 void View::on_segment_completed(int segment_id)
2014 on_segment_changed(segment_id);
2017 void View::on_segment_changed(int segment)
2019 switch (segment_display_mode_) {
2020 case Trace::ShowLastSegmentOnly:
2021 case Trace::ShowSingleSegmentOnly:
2022 set_current_segment(segment);
2025 case Trace::ShowLastCompleteSegmentOnly:
2026 // Only update if all segments are complete
2027 if (session_.all_segments_complete(segment))
2028 set_current_segment(segment);
2031 case Trace::ShowAllSegments:
2032 case Trace::ShowAccumulatedIntensity:
2038 void View::on_settingViewTriggerIsZeroTime_changed(const QVariant new_value)
2042 if (!custom_zero_offset_set_)
2043 reset_zero_position();
2046 void View::perform_delayed_view_update()
2048 if (always_zoom_to_fit_) {
2050 } else if (sticky_scrolling_) {
2051 // Make right side of the view sticky
2054 get_scroll_layout(length, offset);
2056 const QSize areaSize = viewport_->size();
2057 length = max(length - areaSize.width(), 0.0);
2059 set_offset(scale_ * length);
2062 determine_time_unit();
2065 viewport_->update();
2068 void View::process_sticky_events()
2070 if (sticky_events_ & TraceTreeItemHExtentsChanged)
2072 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
2073 restack_all_trace_tree_items();
2077 // Clear the sticky events
2081 } // namespace trace
2082 } // namespace views