2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include <libsigrokdecode/libsigrokdecode.h>
32 #include <unordered_set>
34 #include <QApplication>
37 #include <QFontMetrics>
39 #include <QMouseEvent>
41 #include <QVBoxLayout>
43 #include <libsigrokcxx/libsigrokcxx.hpp>
45 #include "analogsignal.hpp"
47 #include "logicsignal.hpp"
50 #include "tracegroup.hpp"
51 #include "triggermarker.hpp"
53 #include "viewport.hpp"
55 #include "pv/metadata_obj.hpp"
56 #include "pv/data/logic.hpp"
57 #include "pv/data/logicsegment.hpp"
58 #include "pv/devices/device.hpp"
59 #include "pv/globalsettings.hpp"
60 #include "pv/session.hpp"
61 #include "pv/util.hpp"
64 #include "decodetrace.hpp"
67 using pv::data::SignalData;
68 using pv::data::Segment;
69 using pv::util::TimeUnit;
70 using pv::util::Timestamp;
72 using std::back_inserter;
78 using std::make_shared;
80 using std::numeric_limits;
83 using std::set_difference;
84 using std::shared_ptr;
85 using std::unordered_map;
86 using std::unordered_set;
93 const Timestamp View::MaxScale("1e9");
94 const Timestamp View::MinScale("1e-12");
96 const int View::MaxScrollValue = INT_MAX / 2;
98 /* Area at the top and bottom of the view that can't be scrolled out of sight */
99 const int View::ViewScrollMargin = 50;
101 const int View::ScaleUnits[3] = {1, 2, 5};
103 CustomScrollArea::CustomScrollArea(QWidget *parent) :
104 QAbstractScrollArea(parent)
108 bool CustomScrollArea::viewportEvent(QEvent *event)
110 switch (event->type()) {
112 case QEvent::MouseButtonPress:
113 case QEvent::MouseButtonRelease:
114 case QEvent::MouseButtonDblClick:
115 case QEvent::MouseMove:
117 case QEvent::TouchBegin:
118 case QEvent::TouchUpdate:
119 case QEvent::TouchEnd:
122 return QAbstractScrollArea::viewportEvent(event);
126 View::View(Session &session, bool is_main_view, QMainWindow *parent) :
127 ViewBase(session, is_main_view, parent),
129 // Note: Place defaults in View::reset_view_state(), not here
130 splitter_(new QSplitter()),
131 header_was_shrunk_(false), // The splitter remains unchanged after a reset, so this goes here
132 sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui()
133 scroll_needs_defaults_(true)
135 QVBoxLayout *root_layout = new QVBoxLayout(this);
136 root_layout->setContentsMargins(0, 0, 0, 0);
137 root_layout->addWidget(splitter_);
139 viewport_ = new Viewport(*this);
140 scrollarea_ = new CustomScrollArea(splitter_);
141 scrollarea_->setViewport(viewport_);
142 scrollarea_->setFrameShape(QFrame::NoFrame);
144 ruler_ = new Ruler(*this);
146 header_ = new Header(*this);
147 header_->setMinimumWidth(10); // So that the arrow tips show at least
149 // We put the header into a simple layout so that we can add the top margin,
150 // allowing us to make it line up with the bottom of the ruler
151 QWidget *header_container = new QWidget();
152 header_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
153 QVBoxLayout *header_layout = new QVBoxLayout(header_container);
154 header_layout->setContentsMargins(0, ruler_->sizeHint().height(), 0, 0);
155 header_layout->addWidget(header_);
157 // To let the ruler and scrollarea be on the same split pane, we need a layout
158 QWidget *trace_container = new QWidget();
159 trace_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
160 QVBoxLayout *trace_layout = new QVBoxLayout(trace_container);
161 trace_layout->setSpacing(0); // We don't want space between the ruler and scrollarea
162 trace_layout->setContentsMargins(0, 0, 0, 0);
163 trace_layout->addWidget(ruler_);
164 trace_layout->addWidget(scrollarea_);
166 splitter_->addWidget(header_container);
167 splitter_->addWidget(trace_container);
168 splitter_->setHandleWidth(1); // Don't show a visible rubber band
169 splitter_->setCollapsible(0, false); // Prevent the header from collapsing
170 splitter_->setCollapsible(1, false); // Prevent the traces from collapsing
171 splitter_->setStretchFactor(0, 0); // Prevent the panes from being resized
172 splitter_->setStretchFactor(1, 1); // when the entire view is resized
173 splitter_->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
175 viewport_->installEventFilter(this);
176 ruler_->installEventFilter(this);
177 header_->installEventFilter(this);
179 // Set up settings and event handlers
180 GlobalSettings settings;
181 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
182 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
184 GlobalSettings::add_change_handler(this);
186 // Set up metadata objects and event handlers
188 session_.metadata_obj_manager()->create_object(MetadataObjMainViewRange);
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_signals()
349 ViewBase::clear_signals();
353 void View::add_signal(const shared_ptr<Signal> signal)
355 ViewBase::add_signalbase(signal->base());
356 signals_.push_back(signal);
358 signal->set_segment_display_mode(segment_display_mode_);
359 signal->set_current_segment(current_segment_);
361 connect(signal->base().get(), SIGNAL(name_changed(const QString&)),
362 this, SLOT(on_signal_name_changed()));
366 void View::clear_decode_signals()
368 ViewBase::clear_decode_signals();
369 decode_traces_.clear();
372 void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
374 ViewBase::add_decode_signal(signal);
376 shared_ptr<DecodeTrace> d(
377 new DecodeTrace(session_, signal, decode_traces_.size()));
378 decode_traces_.push_back(d);
380 d->set_segment_display_mode(segment_display_mode_);
381 d->set_current_segment(current_segment_);
383 connect(signal.get(), SIGNAL(name_changed(const QString&)),
384 this, SLOT(on_signal_name_changed()));
387 void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
389 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
390 if ((*i)->base() == signal) {
391 decode_traces_.erase(i);
396 ViewBase::remove_decode_signal(signal);
400 shared_ptr<Signal> View::get_signal_under_mouse_cursor() const
402 return signal_under_mouse_cursor_;
410 const View* View::view() const
415 Viewport* View::viewport()
420 const Viewport* View::viewport() const
425 QAbstractScrollArea* View::scrollarea() const
430 const Ruler* View::ruler() const
435 void View::save_settings(QSettings &settings) const
437 settings.setValue("scale", scale_);
438 settings.setValue("v_offset",
439 scrollarea_->verticalScrollBar()->sliderPosition());
441 settings.setValue("splitter_state", splitter_->saveState());
442 settings.setValue("segment_display_mode", segment_display_mode_);
444 GlobalSettings::store_timestamp(settings, "offset", offset_);
446 if (custom_zero_offset_set_)
447 GlobalSettings::store_timestamp(settings, "zero_offset", -zero_offset_);
449 settings.remove("zero_offset");
451 for (const shared_ptr<Signal>& signal : signals_) {
452 settings.beginGroup(signal->base()->internal_name());
453 signal->save_settings(settings);
458 void View::restore_settings(QSettings &settings)
460 // Note: It is assumed that this function is only called once,
461 // immediately after restoring a previous session.
463 if (settings.contains("scale"))
464 set_scale(settings.value("scale").toDouble());
466 if (settings.contains("offset")) {
467 // This also updates ruler_offset_
468 set_offset(GlobalSettings::restore_timestamp(settings, "offset"));
471 if (settings.contains("zero_offset"))
472 set_zero_position(GlobalSettings::restore_timestamp(settings, "zero_offset"));
474 if (settings.contains("splitter_state"))
475 splitter_->restoreState(settings.value("splitter_state").toByteArray());
477 if (settings.contains("segment_display_mode"))
478 set_segment_display_mode(
479 (Trace::SegmentDisplayMode)(settings.value("segment_display_mode").toInt()));
481 for (shared_ptr<Signal> signal : signals_) {
482 settings.beginGroup(signal->base()->internal_name());
483 signal->restore_settings(settings);
487 if (settings.contains("v_offset")) {
488 saved_v_offset_ = settings.value("v_offset").toInt();
489 set_v_offset(saved_v_offset_);
490 scroll_needs_defaults_ = false;
491 // Note: see eventFilter() for additional information
494 settings_restored_ = true;
495 suppress_zoom_to_fit_after_acq_ = true;
497 // Update the ruler so that it uses the new scale
498 calculate_tick_spacing();
501 vector< shared_ptr<TimeItem> > View::time_items() const
503 const vector<shared_ptr<Flag>> f(flags());
504 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
507 items.push_back(cursors_);
508 items.push_back(cursors_->first());
509 items.push_back(cursors_->second());
512 for (auto& trigger_marker : trigger_markers_)
513 items.push_back(trigger_marker);
518 double View::scale() const
523 void View::set_scale(double scale)
525 if (scale_ != scale) {
531 void View::set_offset(const pv::util::Timestamp& offset, bool force_update)
533 if ((offset_ != offset) || force_update) {
535 ruler_offset_ = offset_ + zero_offset_;
537 const int w = viewport_->width();
539 const double samplerate = session_.get_samplerate();
540 // Note: sample_num = time * samplerate
541 // Note: samples_per_pixel = samplerate * scale
542 int64_t start_sample = (offset_ * samplerate).convert_to<int64_t>();
543 int64_t end_sample = (offset_ * samplerate).convert_to<int64_t>() +
544 (w * session_.get_samplerate() * scale_);
546 MetadataObject* md_obj =
547 session_.metadata_obj_manager()->find_object_by_type(MetadataObjMainViewRange);
548 md_obj->set_value(MetadataValueStartSample, QVariant((qlonglong)start_sample));
549 md_obj->set_value(MetadataValueEndSample, QVariant((qlonglong)end_sample));
556 const Timestamp& View::offset() const
561 const Timestamp& View::ruler_offset() const
563 return ruler_offset_;
566 void View::set_zero_position(const pv::util::Timestamp& position)
568 zero_offset_ = -position;
569 custom_zero_offset_set_ = true;
571 // Force an immediate update of the offsets
572 set_offset(offset_, true);
576 void View::reset_zero_position()
580 // When enabled, the first trigger for this segment is used as the zero position
581 GlobalSettings settings;
582 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
584 if (trigger_is_zero_time) {
585 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
587 if (triggers.size() > 0)
588 zero_offset_ = triggers.front();
591 custom_zero_offset_set_ = false;
593 // Force an immediate update of the offsets
594 set_offset(offset_, true);
598 pv::util::Timestamp View::zero_offset() const
603 int View::owner_visual_v_offset() const
605 return -scrollarea_->verticalScrollBar()->sliderPosition();
608 void View::set_v_offset(int offset)
610 scrollarea_->verticalScrollBar()->setSliderPosition(offset);
615 void View::set_h_offset(int offset)
617 scrollarea_->horizontalScrollBar()->setSliderPosition(offset);
622 int View::get_h_scrollbar_maximum() const
624 return scrollarea_->horizontalScrollBar()->maximum();
627 unsigned int View::depth() const
632 uint32_t View::current_segment() const
634 return current_segment_;
637 pv::util::SIPrefix View::tick_prefix() const
642 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
644 if (tick_prefix_ != tick_prefix) {
645 tick_prefix_ = tick_prefix;
646 tick_prefix_changed();
650 unsigned int View::tick_precision() const
652 return tick_precision_;
655 void View::set_tick_precision(unsigned tick_precision)
657 if (tick_precision_ != tick_precision) {
658 tick_precision_ = tick_precision;
659 tick_precision_changed();
663 const pv::util::Timestamp& View::tick_period() const
668 unsigned int View::minor_tick_count() const
670 return minor_tick_count_;
673 void View::set_tick_period(const pv::util::Timestamp& tick_period)
675 if (tick_period_ != tick_period) {
676 tick_period_ = tick_period;
677 tick_period_changed();
681 TimeUnit View::time_unit() const
686 void View::set_time_unit(pv::util::TimeUnit time_unit)
688 if (time_unit_ != time_unit) {
689 time_unit_ = time_unit;
694 void View::set_current_segment(uint32_t segment_id)
696 current_segment_ = segment_id;
698 for (const shared_ptr<Signal>& signal : signals_)
699 signal->set_current_segment(current_segment_);
701 for (shared_ptr<DecodeTrace>& dt : decode_traces_)
702 dt->set_current_segment(current_segment_);
705 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
707 trigger_markers_.clear();
708 for (util::Timestamp timestamp : triggers)
709 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, timestamp));
711 if (!custom_zero_offset_set_)
712 reset_zero_position();
716 segment_changed(segment_id);
719 bool View::segment_is_selectable() const
721 return segment_selectable_;
724 Trace::SegmentDisplayMode View::segment_display_mode() const
726 return segment_display_mode_;
729 void View::set_segment_display_mode(Trace::SegmentDisplayMode mode)
731 segment_display_mode_ = mode;
733 for (const shared_ptr<Signal>& signal : signals_)
734 signal->set_segment_display_mode(mode);
736 uint32_t last_segment = session_.get_segment_count() - 1;
739 case Trace::ShowLastSegmentOnly:
740 if (current_segment_ != last_segment)
741 set_current_segment(last_segment);
744 case Trace::ShowLastCompleteSegmentOnly:
745 // Do nothing if we only have one segment so far
746 if (last_segment > 0) {
747 // If the last segment isn't complete, the previous one must be
748 uint32_t segment_id =
749 (session_.all_segments_complete(last_segment)) ?
750 last_segment : last_segment - 1;
752 if (current_segment_ != segment_id)
753 set_current_segment(segment_id);
757 case Trace::ShowSingleSegmentOnly:
758 case Trace::ShowAllSegments:
759 case Trace::ShowAccumulatedIntensity:
761 // Current segment remains as-is
765 segment_selectable_ = true;
767 if ((mode == Trace::ShowAllSegments) || (mode == Trace::ShowAccumulatedIntensity))
768 segment_selectable_ = false;
772 segment_display_mode_changed((int)mode, segment_selectable_);
775 void View::zoom(double steps)
777 zoom(steps, viewport_->width() / 2);
780 void View::zoom(double steps, int offset)
782 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
785 void View::zoom_fit(bool gui_state)
787 // Act as one-shot when stopped, toggle along with the GUI otherwise
788 if (session_.get_capture_state() == Session::Stopped) {
789 always_zoom_to_fit_ = false;
790 always_zoom_to_fit_changed(false);
792 always_zoom_to_fit_ = gui_state;
793 always_zoom_to_fit_changed(gui_state);
796 const pair<Timestamp, Timestamp> extents = get_time_extents();
797 const Timestamp delta = extents.second - extents.first;
798 if (delta < Timestamp("1e-12"))
802 const int w = viewport_->width();
806 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
807 set_scale_offset(scale.convert_to<double>(), extents.first);
810 void View::focus_on_range(uint64_t start_sample, uint64_t end_sample)
813 const int w = viewport_->width();
817 const double samplerate = session_.get_samplerate();
819 const uint64_t sample_delta = (end_sample - start_sample);
821 // Note: We add 20% margin on the left and 5% on the right
822 const Timestamp delta = (sample_delta * 1.25) / samplerate;
824 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
825 const Timestamp offset = (start_sample - sample_delta * 0.20) / samplerate;
827 set_scale_offset(scale.convert_to<double>(), offset);
830 void View::set_scale_offset(double scale, const Timestamp& offset)
832 // Disable sticky scrolling / always zoom to fit when acquisition runs
833 // and user drags the viewport
834 if ((scale_ == scale) && (offset_ != offset) &&
835 (session_.get_capture_state() == Session::Running)) {
837 if (sticky_scrolling_) {
838 sticky_scrolling_ = false;
839 sticky_scrolling_changed(false);
842 if (always_zoom_to_fit_) {
843 always_zoom_to_fit_ = false;
844 always_zoom_to_fit_changed(false);
851 calculate_tick_spacing();
858 vector< shared_ptr<SignalData> > View::get_visible_data() const
860 // Make a set of all the visible data objects
861 vector< shared_ptr<SignalData> > visible_data;
862 for (const shared_ptr<Signal>& sig : signals_)
864 visible_data.push_back(sig->data());
869 pair<Timestamp, Timestamp> View::get_time_extents() const
871 boost::optional<Timestamp> left_time, right_time;
873 vector< shared_ptr<SignalData> > data;
874 if (signals_.size() == 0)
875 return make_pair(0, 0);
877 data.push_back(signals_.front()->data());
879 for (const shared_ptr<SignalData>& d : data) {
880 const vector< shared_ptr<Segment> > segments = d->segments();
881 for (const shared_ptr<Segment>& s : segments) {
882 double samplerate = s->samplerate();
883 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
885 const Timestamp start_time = s->start_time();
886 left_time = left_time ?
887 min(*left_time, start_time) :
889 right_time = right_time ?
890 max(*right_time, start_time + d->max_sample_count() / samplerate) :
891 start_time + d->max_sample_count() / samplerate;
895 if (!left_time || !right_time)
896 return make_pair(0, 0);
898 assert(*left_time < *right_time);
899 return make_pair(*left_time, *right_time);
902 bool View::colored_bg() const
907 bool View::cursors_shown() const
909 return show_cursors_;
912 void View::show_cursors(bool show)
914 if (show_cursors_ != show) {
915 show_cursors_ = show;
917 cursor_state_changed(show);
923 void View::set_cursors(pv::util::Timestamp& first, pv::util::Timestamp& second)
927 cursors_->first()->set_time(first);
928 cursors_->second()->set_time(second);
934 void View::center_cursors()
938 const double time_width = scale_ * viewport_->width();
939 cursors_->first()->set_time(offset_ + time_width * 0.4);
940 cursors_->second()->set_time(offset_ + time_width * 0.6);
946 shared_ptr<CursorPair> View::cursors() const
951 shared_ptr<Flag> View::add_flag(const Timestamp& time)
953 shared_ptr<Flag> flag =
954 make_shared<Flag>(*this, time, QString("%1").arg(next_flag_text_));
955 flags_.push_back(flag);
957 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
958 (next_flag_text_ + 1);
960 time_item_appearance_changed(true, true);
964 void View::remove_flag(shared_ptr<Flag> flag)
967 time_item_appearance_changed(true, true);
970 vector< shared_ptr<Flag> > View::flags() const
972 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
973 stable_sort(flags.begin(), flags.end(),
974 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
975 return a->time() < b->time();
981 const QPoint& View::hover_point() const
986 const QWidget* View::hover_widget() const
988 return hover_widget_;
991 int64_t View::get_nearest_level_change(const QPoint &p)
993 // Is snapping disabled?
994 if (snap_distance_ == 0)
998 entry_t(shared_ptr<Signal> s) :
999 signal(s), delta(numeric_limits<int64_t>::max()), sample(-1), is_dense(false) {}
1000 shared_ptr<Signal> signal;
1006 vector<entry_t> list;
1008 // Create list of signals to consider
1009 if (signal_under_mouse_cursor_)
1010 list.emplace_back(signal_under_mouse_cursor_);
1012 for (shared_ptr<Signal> s : signals_) {
1016 list.emplace_back(s);
1019 // Get data for listed signals
1020 for (entry_t &e : list) {
1021 // Calculate sample number from cursor position
1022 const double samples_per_pixel = e.signal->base()->get_samplerate() * scale();
1023 const int64_t x_offset = offset().convert_to<double>() / scale();
1024 const int64_t sample_num = max(((x_offset + p.x()) * samples_per_pixel), 0.0);
1026 vector<data::LogicSegment::EdgePair> edges =
1027 e.signal->get_nearest_level_changes(sample_num);
1033 const int64_t first_sample_delta = abs(sample_num - edges.front().first);
1034 const int64_t first_delta = first_sample_delta / samples_per_pixel;
1035 e.delta = first_delta;
1036 e.sample = edges.front().first;
1038 // Check second edge if available
1039 if (edges.size() == 2) {
1040 // Note: -1 because this is usually the right edge and sample points are left-aligned
1041 const int64_t second_sample_delta = abs(sample_num - edges.back().first - 1);
1042 const int64_t second_delta = second_sample_delta / samples_per_pixel;
1044 // If both edges are too close, we mark this signal as being dense
1045 if ((first_delta + second_delta) <= snap_distance_)
1048 if (second_delta < first_delta) {
1049 e.delta = second_delta;
1050 e.sample = edges.back().first;
1055 // Look for the best match: non-dense first, then dense
1056 entry_t *match = nullptr;
1058 for (entry_t &e : list) {
1059 if (e.delta > snap_distance_ || e.is_dense)
1063 if (e.delta < match->delta)
1070 for (entry_t &e : list) {
1075 if (e.delta < match->delta)
1083 // Somewhat ugly hack to make TimeItem::drag_by() work
1084 signal_under_mouse_cursor_ = match->signal;
1086 return match->sample;
1092 void View::restack_all_trace_tree_items()
1094 // Make a list of owners that is sorted from deepest first
1095 const vector<shared_ptr<TraceTreeItem>> items(
1096 list_by_type<TraceTreeItem>());
1097 set< TraceTreeItemOwner* > owners;
1098 for (const auto &r : items)
1099 owners.insert(r->owner());
1100 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
1101 sort(sorted_owners.begin(), sorted_owners.end(),
1102 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
1103 return a->depth() > b->depth(); });
1105 // Restack the items recursively
1106 for (auto &o : sorted_owners)
1109 // Animate the items to their destination
1110 for (const auto &i : items)
1111 i->animate_to_layout_v_offset();
1114 int View::header_width() const
1116 return header_->extended_size_hint().width();
1119 void View::on_setting_changed(const QString &key, const QVariant &value)
1121 GlobalSettings settings;
1123 if (key == GlobalSettings::Key_View_ColoredBG) {
1124 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
1125 viewport_->update();
1128 if ((key == GlobalSettings::Key_View_ShowSamplingPoints) ||
1129 (key == GlobalSettings::Key_View_ShowAnalogMinorGrid))
1130 viewport_->update();
1132 if (key == GlobalSettings::Key_View_TriggerIsZeroTime)
1133 on_settingViewTriggerIsZeroTime_changed(value);
1135 if (key == GlobalSettings::Key_View_SnapDistance)
1136 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
1139 void View::trigger_event(int segment_id, util::Timestamp location)
1141 // TODO This doesn't work if we're showing multiple segments at once
1142 if ((uint32_t)segment_id != current_segment_)
1145 if (!custom_zero_offset_set_)
1146 reset_zero_position();
1148 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
1151 void View::get_scroll_layout(double &length, Timestamp &offset) const
1153 const pair<Timestamp, Timestamp> extents = get_time_extents();
1154 length = ((extents.second - extents.first) / scale_).convert_to<double>();
1155 offset = offset_ / scale_;
1158 void View::set_zoom(double scale, int offset)
1160 // Reset the "always zoom to fit" feature as the user changed the zoom
1161 always_zoom_to_fit_ = false;
1162 always_zoom_to_fit_changed(false);
1164 const Timestamp cursor_offset = offset_ + scale_ * offset;
1165 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
1166 const Timestamp new_offset = cursor_offset - new_scale * offset;
1167 set_scale_offset(new_scale.convert_to<double>(), new_offset);
1170 void View::calculate_tick_spacing()
1172 const double SpacingIncrement = 10.0f;
1173 const double MinValueSpacing = 40.0f;
1175 // Figure out the highest numeric value visible on a label
1176 const QSize areaSize = viewport_->size();
1177 const Timestamp max_time = max(fabs(offset_),
1178 fabs(offset_ + scale_ * areaSize.width()));
1180 double min_width = SpacingIncrement;
1181 double label_width, tick_period_width;
1183 QFontMetrics m(QApplication::font());
1185 // Copies of the member variables with the same name, used in the calculation
1186 // and written back afterwards, so that we don't emit signals all the time
1187 // during the calculation.
1188 pv::util::Timestamp tick_period = tick_period_;
1189 pv::util::SIPrefix tick_prefix = tick_prefix_;
1190 unsigned tick_precision = tick_precision_;
1193 const double min_period = scale_ * min_width;
1195 const int order = (int)floorf(log10f(min_period));
1196 const pv::util::Timestamp order_decimal =
1197 pow(pv::util::Timestamp(10), order);
1199 // Allow for a margin of error so that a scale unit of 1 can be used.
1200 // Otherwise, for a SU of 1 the tick period will almost always be below
1201 // the min_period by a small amount - and thus skipped in favor of 2.
1202 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
1203 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
1204 double tp_with_margin;
1205 unsigned int unit = 0;
1208 tp_with_margin = order_decimal.convert_to<double>() *
1209 (ScaleUnits[unit++] + tp_margin);
1210 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
1212 minor_tick_count_ = (unit == 2) ? 4 : 5;
1213 tick_period = order_decimal * ScaleUnits[unit - 1];
1214 tick_prefix = static_cast<pv::util::SIPrefix>(
1215 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
1217 // Precision is the number of fractional digits required, not
1218 // taking the prefix into account (and it must never be negative)
1219 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
1221 tick_period_width = (tick_period / scale_).convert_to<double>();
1223 const QString label_text = Ruler::format_time_with_distance(
1224 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
1226 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
1227 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
1230 min_width += SpacingIncrement;
1231 } while (tick_period_width < label_width);
1233 set_tick_period(tick_period);
1234 set_tick_prefix(tick_prefix);
1235 set_tick_precision(tick_precision);
1238 void View::adjust_top_margin()
1242 const QSize areaSize = viewport_->size();
1244 const pair<int, int> extents = v_extents();
1245 const int top_margin = owner_visual_v_offset() + extents.first;
1246 const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second;
1248 // Do we have empty space at the top while the last trace goes out of screen?
1249 if ((top_margin > 0) && (trace_bottom > areaSize.height())) {
1250 const int trace_height = extents.second - extents.first;
1252 // Center everything vertically if there is enough space
1253 if (areaSize.height() >= trace_height)
1254 set_v_offset(extents.first -
1255 ((areaSize.height() - trace_height) / 2));
1257 // Remove the top margin to make as many traces fit on screen as possible
1258 set_v_offset(extents.first);
1262 void View::update_scroll()
1265 QScrollBar *hscrollbar = scrollarea_->horizontalScrollBar();
1266 QScrollBar *vscrollbar = scrollarea_->verticalScrollBar();
1268 const QSize areaSize = viewport_->size();
1270 // Set the horizontal scroll bar
1273 get_scroll_layout(length, offset);
1274 length = max(length - areaSize.width(), 0.0);
1276 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
1278 hscrollbar->setPageStep(areaSize.width() / 2);
1279 hscrollbar->setSingleStep(major_tick_distance);
1281 updating_scroll_ = true;
1283 if (length < MaxScrollValue) {
1284 hscrollbar->setRange(0, length);
1285 hscrollbar->setSliderPosition(offset.convert_to<double>());
1287 hscrollbar->setRange(0, MaxScrollValue);
1288 hscrollbar->setSliderPosition(
1289 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
1292 updating_scroll_ = false;
1294 // Set the vertical scrollbar
1295 vscrollbar->setPageStep(areaSize.height());
1296 vscrollbar->setSingleStep(areaSize.height() / 8);
1298 const pair<int, int> extents = v_extents();
1300 // Don't change the scrollbar range if there are no traces
1301 if (extents.first != extents.second) {
1302 int top_margin = ViewScrollMargin;
1303 int btm_margin = ViewScrollMargin;
1305 vscrollbar->setRange(extents.first - areaSize.height() + top_margin,
1306 extents.second - btm_margin);
1309 if (scroll_needs_defaults_) {
1310 set_scroll_default();
1311 scroll_needs_defaults_ = false;
1315 void View::reset_scroll()
1317 scrollarea_->verticalScrollBar()->setRange(0, 0);
1320 void View::set_scroll_default()
1324 const QSize areaSize = viewport_->size();
1326 const pair<int, int> extents = v_extents();
1327 const int trace_height = extents.second - extents.first;
1329 // Do all traces fit in the view?
1330 if (areaSize.height() >= trace_height)
1331 // Center all traces vertically
1332 set_v_offset(extents.first -
1333 ((areaSize.height() - trace_height) / 2));
1335 // Put the first trace at the top, letting the bottom ones overflow
1336 set_v_offset(extents.first);
1339 void View::determine_if_header_was_shrunk()
1341 const int header_pane_width =
1342 splitter_->sizes().front(); // clazy:exclude=detaching-temporary
1344 // Allow for a slight margin of error so that we also accept
1345 // slight differences when e.g. a label name change increased
1346 // the overall width
1347 header_was_shrunk_ = (header_pane_width < (header_width() - 10));
1350 void View::resize_header_to_fit()
1352 // Setting the maximum width of the header widget doesn't work as
1353 // expected because the splitter would allow the user to make the
1354 // pane wider than that, creating empty space as a result.
1355 // To make this work, we stricly enforce the maximum width by
1356 // expanding the header unless the user shrunk it on purpose.
1357 // As we're then setting the width of the header pane, we set the
1358 // splitter to the maximum allowed position.
1360 int splitter_area_width = 0;
1361 for (int w : splitter_->sizes()) // clazy:exclude=range-loop
1362 splitter_area_width += w;
1364 // Make sure the header has enough horizontal space to show all labels fully
1365 QList<int> pane_sizes;
1366 pane_sizes.push_back(header_->extended_size_hint().width());
1367 pane_sizes.push_back(splitter_area_width - header_->extended_size_hint().width());
1368 splitter_->setSizes(pane_sizes);
1371 void View::update_layout()
1376 TraceTreeItemOwner* View::find_prevalent_trace_group(
1377 const shared_ptr<sigrok::ChannelGroup> &group,
1378 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1383 unordered_set<TraceTreeItemOwner*> owners;
1384 vector<TraceTreeItemOwner*> owner_list;
1386 // Make a set and a list of all the owners
1387 for (const auto& channel : group->channels()) {
1388 for (auto& entry : signal_map) {
1389 if (entry.first->channel() == channel) {
1390 TraceTreeItemOwner *const o = (entry.second)->owner();
1391 owner_list.push_back(o);
1397 // Iterate through the list of owners, and find the most prevalent
1398 size_t max_prevalence = 0;
1399 TraceTreeItemOwner *prevalent_owner = nullptr;
1400 for (TraceTreeItemOwner *owner : owners) {
1401 const size_t prevalence = count_if(
1402 owner_list.begin(), owner_list.end(),
1403 [&](TraceTreeItemOwner *o) { return o == owner; });
1404 if (prevalence > max_prevalence) {
1405 max_prevalence = prevalence;
1406 prevalent_owner = owner;
1410 return prevalent_owner;
1413 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
1414 const vector< shared_ptr<sigrok::Channel> > &channels,
1415 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1417 set< shared_ptr<Trace> > &add_list)
1419 vector< shared_ptr<Trace> > filtered_traces;
1421 for (const auto& channel : channels) {
1422 for (auto& entry : signal_map) {
1423 if (entry.first->channel() == channel) {
1424 shared_ptr<Trace> trace = entry.second;
1425 const auto list_iter = add_list.find(trace);
1426 if (list_iter == add_list.end())
1429 filtered_traces.push_back(trace);
1430 add_list.erase(list_iter);
1435 return filtered_traces;
1438 void View::determine_time_unit()
1440 // Check whether we know the sample rate and hence can use time as the unit
1441 if (time_unit_ == util::TimeUnit::Samples) {
1442 // Check all signals but...
1443 for (const shared_ptr<Signal>& signal : signals_) {
1444 const shared_ptr<SignalData> data = signal->data();
1446 // ...only check first segment of each
1447 const vector< shared_ptr<Segment> > segments = data->segments();
1448 if (!segments.empty())
1449 if (segments[0]->samplerate()) {
1450 set_time_unit(util::TimeUnit::Time);
1457 bool View::eventFilter(QObject *object, QEvent *event)
1459 const QEvent::Type type = event->type();
1461 if (type == QEvent::MouseMove) {
1464 hover_widget_ = qobject_cast<QWidget*>(object);
1466 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1467 if (object == viewport_)
1468 hover_point_ = mouse_event->pos();
1469 else if (object == ruler_)
1470 hover_point_ = mouse_event->pos();
1471 else if (object == header_)
1472 hover_point_ = QPoint(0, mouse_event->y());
1474 hover_point_ = QPoint(-1, -1);
1476 update_hover_point();
1478 if (grabbed_widget_) {
1479 int64_t nearest = get_nearest_level_change(hover_point_);
1480 pv::util::Timestamp mouse_time = offset_ + hover_point_.x() * scale_;
1482 if (nearest == -1) {
1483 grabbed_widget_->set_time(mouse_time);
1485 grabbed_widget_->set_time(nearest / get_signal_under_mouse_cursor()->base()->get_samplerate());
1489 } else if (type == QEvent::MouseButtonPress) {
1490 grabbed_widget_ = nullptr;
1492 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1493 if ((object == viewport_) && (mouse_event->button() & Qt::LeftButton)) {
1494 // Send event to all trace tree items
1495 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1496 list_by_type<TraceTreeItem>());
1497 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1498 r->mouse_left_press_event(mouse_event);
1500 } else if (type == QEvent::Leave) {
1501 hover_point_ = QPoint(-1, -1);
1502 update_hover_point();
1503 } else if (type == QEvent::Show) {
1505 // This is somewhat of a hack, unfortunately. We cannot use
1506 // set_v_offset() from within restore_settings() as the view
1507 // at that point is neither visible nor properly sized.
1508 // This is the least intrusive workaround I could come up
1509 // with: set the vertical offset (or scroll defaults) when
1510 // the view is shown, which happens after all widgets were
1511 // resized to their final sizes.
1514 if (settings_restored_)
1515 determine_if_header_was_shrunk();
1517 resize_header_to_fit();
1519 if (scroll_needs_defaults_) {
1520 set_scroll_default();
1521 scroll_needs_defaults_ = false;
1524 if (saved_v_offset_) {
1525 set_v_offset(saved_v_offset_);
1526 saved_v_offset_ = 0;
1530 return QObject::eventFilter(object, event);
1533 void View::contextMenuEvent(QContextMenuEvent *event)
1535 QPoint pos = event->pos() - QPoint(0, ruler_->sizeHint().height());
1537 const shared_ptr<ViewItem> r = viewport_->get_mouse_over_item(pos);
1541 QMenu *menu = r->create_view_context_menu(this, pos);
1543 menu->popup(event->globalPos());
1546 void View::resizeEvent(QResizeEvent* event)
1548 // Only adjust the top margin if we shrunk vertically
1549 if (event->size().height() < event->oldSize().height())
1550 adjust_top_margin();
1555 void View::update_hover_point()
1557 // Determine signal that the mouse cursor is hovering over
1558 signal_under_mouse_cursor_.reset();
1559 if (hover_widget_ == this) {
1560 for (const shared_ptr<Signal>& s : signals_) {
1561 const pair<int, int> extents = s->v_extents();
1562 const int top = s->get_visual_y() + extents.first;
1563 const int btm = s->get_visual_y() + extents.second;
1564 if ((hover_point_.y() >= top) && (hover_point_.y() <= btm)
1565 && s->base()->enabled())
1566 signal_under_mouse_cursor_ = s;
1570 // Update all trace tree items
1571 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1572 list_by_type<TraceTreeItem>());
1573 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1574 r->hover_point_changed(hover_point_);
1576 // Notify this view's listeners
1577 hover_point_changed(hover_widget_, hover_point_);
1579 // Hover point is -1 when invalid and 0 for the header
1580 if (hover_point_.x() > 0) {
1581 // Notify global listeners
1582 pv::util::Timestamp mouse_time = offset_ + hover_point_.x() * scale_;
1583 int64_t sample_num = (mouse_time * session_.get_samplerate()).convert_to<int64_t>();
1585 MetadataObject* md_obj =
1586 session_.metadata_obj_manager()->find_object_by_type(MetadataObjMousePos);
1587 md_obj->set_value(MetadataValueStartSample, QVariant((qlonglong)sample_num));
1591 void View::row_item_appearance_changed(bool label, bool content)
1596 viewport_->update();
1599 void View::time_item_appearance_changed(bool label, bool content)
1604 // Make sure the header pane width is updated, too
1609 viewport_->update();
1612 void View::extents_changed(bool horz, bool vert)
1615 (horz ? TraceTreeItemHExtentsChanged : 0) |
1616 (vert ? TraceTreeItemVExtentsChanged : 0);
1618 if (!lazy_event_handler_.isActive())
1619 lazy_event_handler_.start();
1622 void View::on_signal_name_changed()
1624 if (!header_was_shrunk_)
1625 resize_header_to_fit();
1628 void View::on_splitter_moved()
1630 // The header can only shrink when the splitter is moved manually
1631 determine_if_header_was_shrunk();
1633 if (!header_was_shrunk_)
1634 resize_header_to_fit();
1637 void View::on_zoom_in_shortcut_triggered()
1642 void View::on_zoom_out_shortcut_triggered()
1647 void View::on_scroll_to_start_shortcut_triggered()
1652 void View::on_scroll_to_end_shortcut_triggered()
1654 set_h_offset(get_h_scrollbar_maximum());
1657 void View::h_scroll_value_changed(int value)
1659 if (updating_scroll_)
1662 // Disable sticky scrolling when user moves the horizontal scroll bar
1663 // during a running acquisition
1664 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1665 sticky_scrolling_ = false;
1666 sticky_scrolling_changed(false);
1669 const int range = scrollarea_->horizontalScrollBar()->maximum();
1670 if (range < MaxScrollValue)
1671 set_offset(scale_ * value);
1675 get_scroll_layout(length, offset);
1676 set_offset(scale_ * length * value / MaxScrollValue);
1680 viewport_->update();
1683 void View::v_scroll_value_changed()
1686 viewport_->update();
1689 void View::on_grab_ruler(int ruler_id)
1691 if (!cursors_shown()) {
1696 // Release the grabbed widget if its trigger hotkey was pressed twice
1698 grabbed_widget_ = (grabbed_widget_ == cursors_->first().get()) ?
1699 nullptr : cursors_->first().get();
1701 grabbed_widget_ = (grabbed_widget_ == cursors_->second().get()) ?
1702 nullptr : cursors_->second().get();
1704 if (grabbed_widget_)
1705 grabbed_widget_->set_time(ruler_->get_absolute_time_from_x_pos(
1706 mapFromGlobal(QCursor::pos()).x() - header_width()));
1709 void View::signals_changed()
1711 using sigrok::Channel;
1713 vector< shared_ptr<Channel> > channels;
1714 shared_ptr<sigrok::Device> sr_dev;
1715 bool signals_added_or_removed = false;
1717 // Do we need to set the vertical scrollbar to its default position later?
1718 // We do if there are no traces, i.e. the scroll bar has no range set
1719 bool reset_scrollbar =
1720 (scrollarea_->verticalScrollBar()->minimum() ==
1721 scrollarea_->verticalScrollBar()->maximum());
1723 if (!session_.device()) {
1727 sr_dev = session_.device()->device();
1729 channels = sr_dev->channels();
1732 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1734 // Make a list of traces that are being added, and a list of traces
1735 // that are being removed
1736 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1737 const set<shared_ptr<Trace>> prev_traces(
1738 prev_trace_list.begin(), prev_trace_list.end());
1740 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1742 #ifdef ENABLE_DECODE
1743 traces.insert(decode_traces_.begin(), decode_traces_.end());
1746 set< shared_ptr<Trace> > add_traces;
1747 set_difference(traces.begin(), traces.end(),
1748 prev_traces.begin(), prev_traces.end(),
1749 inserter(add_traces, add_traces.begin()));
1751 set< shared_ptr<Trace> > remove_traces;
1752 set_difference(prev_traces.begin(), prev_traces.end(),
1753 traces.begin(), traces.end(),
1754 inserter(remove_traces, remove_traces.begin()));
1756 // Make a look-up table of sigrok Channels to pulseview Signals
1757 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1759 for (const shared_ptr<Signal>& sig : signals_)
1760 signal_map[sig->base()] = sig;
1762 // Populate channel groups
1764 for (auto& entry : sr_dev->channel_groups()) {
1765 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1767 if (group->channels().size() <= 1)
1770 // Find best trace group to add to
1771 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1774 // If there is no trace group, create one
1775 shared_ptr<TraceGroup> new_trace_group;
1777 new_trace_group.reset(new TraceGroup());
1778 owner = new_trace_group.get();
1781 // Extract traces for the trace group, removing them from
1783 const vector< shared_ptr<Trace> > new_traces_in_group =
1784 extract_new_traces_for_channels(group->channels(),
1785 signal_map, add_traces);
1787 // Add the traces to the group
1788 const pair<int, int> prev_v_extents = owner->v_extents();
1789 int offset = prev_v_extents.second - prev_v_extents.first;
1790 for (const shared_ptr<Trace>& trace : new_traces_in_group) {
1792 owner->add_child_item(trace);
1794 const pair<int, int> extents = trace->v_extents();
1795 if (trace->enabled())
1796 offset += -extents.first;
1797 trace->force_to_v_offset(offset);
1798 if (trace->enabled())
1799 offset += extents.second;
1802 if (new_trace_group) {
1803 // Assign proper vertical offsets to each channel in the group
1804 new_trace_group->restack_items();
1806 // If this is a new group, enqueue it in the new top level
1808 if (!new_traces_in_group.empty())
1809 new_top_level_items.push_back(new_trace_group);
1813 // Enqueue the remaining logic channels in a group
1814 vector< shared_ptr<Channel> > logic_channels;
1815 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1816 [](const shared_ptr<Channel>& c) {
1817 return c->type() == sigrok::ChannelType::LOGIC; });
1819 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1820 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1822 if (non_grouped_logic_signals.size() > 0) {
1823 const shared_ptr<TraceGroup> non_grouped_trace_group(
1824 make_shared<TraceGroup>());
1825 for (const shared_ptr<Trace>& trace : non_grouped_logic_signals)
1826 non_grouped_trace_group->add_child_item(trace);
1828 non_grouped_trace_group->restack_items();
1829 new_top_level_items.push_back(non_grouped_trace_group);
1832 // Enqueue the remaining channels as free ungrouped traces
1833 const vector< shared_ptr<Trace> > new_top_level_signals =
1834 extract_new_traces_for_channels(channels, signal_map, add_traces);
1835 new_top_level_items.insert(new_top_level_items.end(),
1836 new_top_level_signals.begin(), new_top_level_signals.end());
1838 // Enqueue any remaining traces i.e. decode traces
1839 new_top_level_items.insert(new_top_level_items.end(),
1840 add_traces.begin(), add_traces.end());
1842 // Remove any removed traces
1843 for (const shared_ptr<Trace>& trace : remove_traces) {
1844 TraceTreeItemOwner *const owner = trace->owner();
1846 owner->remove_child_item(trace);
1847 signals_added_or_removed = true;
1850 // Remove any empty trace groups
1851 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1852 if (group->child_items().size() == 0) {
1853 remove_child_item(group);
1857 // Add and position the pending top levels items
1858 int offset = v_extents().second;
1859 for (auto item : new_top_level_items) {
1860 add_child_item(item);
1862 // Position the item after the last item or at the top if there is none
1863 const pair<int, int> extents = item->v_extents();
1865 if (item->enabled())
1866 offset += -extents.first;
1868 item->force_to_v_offset(offset);
1870 if (item->enabled())
1871 offset += extents.second;
1872 signals_added_or_removed = true;
1876 if (signals_added_or_removed && !header_was_shrunk_)
1877 resize_header_to_fit();
1882 viewport_->update();
1884 if (reset_scrollbar)
1885 set_scroll_default();
1888 void View::capture_state_updated(int state)
1890 GlobalSettings settings;
1892 if (state == Session::Running) {
1893 set_time_unit(util::TimeUnit::Samples);
1895 trigger_markers_.clear();
1896 if (!custom_zero_offset_set_)
1897 set_zero_position(0);
1899 scale_at_acq_start_ = scale_;
1900 offset_at_acq_start_ = offset_;
1902 // Activate "always zoom to fit" if the setting is enabled and we're
1903 // the main view of this session (other trace views may be used for
1904 // zooming and we don't want to mess them up)
1905 bool state = settings.value(GlobalSettings::Key_View_ZoomToFitDuringAcq).toBool();
1906 if (is_main_view_ && state) {
1907 always_zoom_to_fit_ = true;
1908 always_zoom_to_fit_changed(always_zoom_to_fit_);
1911 // Enable sticky scrolling if the setting is enabled
1912 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
1914 // Reset all traces to segment 0
1915 current_segment_ = 0;
1916 set_current_segment(current_segment_);
1919 if (state == Session::Stopped) {
1920 // After acquisition has stopped we need to re-calculate the ticks once
1921 // as it's otherwise done when the user pans or zooms, which is too late
1922 calculate_tick_spacing();
1924 // Reset "always zoom to fit", the acquisition has stopped
1925 if (always_zoom_to_fit_) {
1926 // Perform a final zoom-to-fit before disabling
1927 zoom_fit(always_zoom_to_fit_);
1928 always_zoom_to_fit_ = false;
1929 always_zoom_to_fit_changed(always_zoom_to_fit_);
1932 bool zoom_to_fit_after_acq =
1933 settings.value(GlobalSettings::Key_View_ZoomToFitAfterAcq).toBool();
1935 // Only perform zoom-to-fit if the user hasn't altered the viewport and
1936 // we didn't restore settings in the meanwhile
1937 if (zoom_to_fit_after_acq &&
1938 !suppress_zoom_to_fit_after_acq_ &&
1939 (scale_ == scale_at_acq_start_) &&
1940 (offset_ == offset_at_acq_start_))
1941 zoom_fit(false); // We're stopped, so the GUI state doesn't matter
1943 suppress_zoom_to_fit_after_acq_ = false;
1947 void View::on_new_segment(int new_segment_id)
1949 on_segment_changed(new_segment_id);
1952 void View::on_segment_completed(int segment_id)
1954 on_segment_changed(segment_id);
1957 void View::on_segment_changed(int segment)
1959 switch (segment_display_mode_) {
1960 case Trace::ShowLastSegmentOnly:
1961 case Trace::ShowSingleSegmentOnly:
1962 set_current_segment(segment);
1965 case Trace::ShowLastCompleteSegmentOnly:
1966 // Only update if all segments are complete
1967 if (session_.all_segments_complete(segment))
1968 set_current_segment(segment);
1971 case Trace::ShowAllSegments:
1972 case Trace::ShowAccumulatedIntensity:
1978 void View::on_settingViewTriggerIsZeroTime_changed(const QVariant new_value)
1982 if (!custom_zero_offset_set_)
1983 reset_zero_position();
1986 void View::perform_delayed_view_update()
1988 if (always_zoom_to_fit_) {
1990 } else if (sticky_scrolling_) {
1991 // Make right side of the view sticky
1994 get_scroll_layout(length, offset);
1996 const QSize areaSize = viewport_->size();
1997 length = max(length - areaSize.width(), 0.0);
1999 set_offset(scale_ * length);
2002 determine_time_unit();
2005 viewport_->update();
2008 void View::process_sticky_events()
2010 if (sticky_events_ & TraceTreeItemHExtentsChanged)
2012 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
2013 restack_all_trace_tree_items();
2017 // Clear the sticky events
2021 } // namespace trace
2022 } // namespace views