2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include <libsigrokdecode/libsigrokdecode.h>
33 #include <QApplication>
36 #include <QFontMetrics>
38 #include <QMouseEvent>
40 #include <QVBoxLayout>
42 #include <libsigrokcxx/libsigrokcxx.hpp>
44 #include "analogsignal.hpp"
46 #include "logicsignal.hpp"
49 #include "tracegroup.hpp"
50 #include "triggermarker.hpp"
52 #include "viewport.hpp"
54 #include "pv/metadata_obj.hpp"
55 #include "pv/data/logic.hpp"
56 #include "pv/data/logicsegment.hpp"
57 #include "pv/devices/device.hpp"
58 #include "pv/globalsettings.hpp"
59 #include "pv/session.hpp"
60 #include "pv/util.hpp"
63 #include "decodetrace.hpp"
66 using pv::data::SignalData;
67 using pv::data::Segment;
68 using pv::util::TimeUnit;
69 using pv::util::Timestamp;
71 using std::back_inserter;
77 using std::make_shared;
79 using std::numeric_limits;
82 using std::set_difference;
83 using std::shared_ptr;
90 const Timestamp View::MaxScale("1e9");
91 const Timestamp View::MinScale("1e-12");
93 const int View::MaxScrollValue = INT_MAX / 2;
95 /* Area at the top and bottom of the view that can't be scrolled out of sight */
96 const int View::ViewScrollMargin = 50;
98 const int View::ScaleUnits[3] = {1, 2, 5};
100 CustomScrollArea::CustomScrollArea(QWidget *parent) :
101 QAbstractScrollArea(parent)
105 bool CustomScrollArea::viewportEvent(QEvent *event)
107 switch (event->type()) {
109 case QEvent::MouseButtonPress:
110 case QEvent::MouseButtonRelease:
111 case QEvent::MouseButtonDblClick:
112 case QEvent::MouseMove:
114 case QEvent::TouchBegin:
115 case QEvent::TouchUpdate:
116 case QEvent::TouchEnd:
119 return QAbstractScrollArea::viewportEvent(event);
123 View::View(Session &session, bool is_main_view, QMainWindow *parent) :
124 ViewBase(session, is_main_view, parent),
126 // Note: Place defaults in View::reset_view_state(), not here
127 splitter_(new QSplitter()),
128 header_was_shrunk_(false), // The splitter remains unchanged after a reset, so this goes here
129 sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui()
130 scroll_needs_defaults_(true)
132 QVBoxLayout *root_layout = new QVBoxLayout(this);
133 root_layout->setContentsMargins(0, 0, 0, 0);
134 root_layout->addWidget(splitter_);
136 viewport_ = new Viewport(*this);
137 scrollarea_ = new CustomScrollArea(splitter_);
138 scrollarea_->setViewport(viewport_);
139 scrollarea_->setFrameShape(QFrame::NoFrame);
141 ruler_ = new Ruler(*this);
143 header_ = new Header(*this);
144 header_->setMinimumWidth(10); // So that the arrow tips show at least
146 // We put the header into a simple layout so that we can add the top margin,
147 // allowing us to make it line up with the bottom of the ruler
148 QWidget *header_container = new QWidget();
149 header_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
150 QVBoxLayout *header_layout = new QVBoxLayout(header_container);
151 header_layout->setContentsMargins(0, ruler_->sizeHint().height(), 0, 0);
152 header_layout->addWidget(header_);
154 // To let the ruler and scrollarea be on the same split pane, we need a layout
155 QWidget *trace_container = new QWidget();
156 trace_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
157 QVBoxLayout *trace_layout = new QVBoxLayout(trace_container);
158 trace_layout->setSpacing(0); // We don't want space between the ruler and scrollarea
159 trace_layout->setContentsMargins(0, 0, 0, 0);
160 trace_layout->addWidget(ruler_);
161 trace_layout->addWidget(scrollarea_);
163 splitter_->addWidget(header_container);
164 splitter_->addWidget(trace_container);
165 splitter_->setHandleWidth(1); // Don't show a visible rubber band
166 splitter_->setCollapsible(0, false); // Prevent the header from collapsing
167 splitter_->setCollapsible(1, false); // Prevent the traces from collapsing
168 splitter_->setStretchFactor(0, 0); // Prevent the panes from being resized
169 splitter_->setStretchFactor(1, 1); // when the entire view is resized
170 splitter_->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
172 viewport_->installEventFilter(this);
173 ruler_->installEventFilter(this);
174 header_->installEventFilter(this);
176 // Set up settings and event handlers
177 GlobalSettings settings;
178 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
179 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
181 GlobalSettings::add_change_handler(this);
183 // Set up metadata objects and event handlers
185 session_.metadata_obj_manager()->create_object(MetadataObjMainViewRange);
186 session_.metadata_obj_manager()->create_object(MetadataObjMousePos);
189 // Set up UI event handlers
190 connect(scrollarea_->horizontalScrollBar(), SIGNAL(valueChanged(int)),
191 this, SLOT(h_scroll_value_changed(int)));
192 connect(scrollarea_->verticalScrollBar(), SIGNAL(valueChanged(int)),
193 this, SLOT(v_scroll_value_changed()));
195 connect(header_, SIGNAL(selection_changed()),
196 ruler_, SLOT(clear_selection()));
197 connect(ruler_, SIGNAL(selection_changed()),
198 header_, SLOT(clear_selection()));
200 connect(header_, SIGNAL(selection_changed()),
201 this, SIGNAL(selection_changed()));
202 connect(ruler_, SIGNAL(selection_changed()),
203 this, SIGNAL(selection_changed()));
205 connect(splitter_, SIGNAL(splitterMoved(int, int)),
206 this, SLOT(on_splitter_moved()));
208 connect(&lazy_event_handler_, SIGNAL(timeout()),
209 this, SLOT(process_sticky_events()));
210 lazy_event_handler_.setSingleShot(true);
211 lazy_event_handler_.setInterval(1000 / ViewBase::MaxViewAutoUpdateRate);
213 // Set up local keyboard shortcuts
214 zoom_in_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Plus), this,
215 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
216 zoom_in_shortcut_->setAutoRepeat(false);
218 zoom_out_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Minus), this,
219 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
220 zoom_out_shortcut_->setAutoRepeat(false);
222 zoom_in_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Up), this,
223 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
224 zoom_out_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Down), this,
225 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
227 home_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Home), this,
228 SLOT(on_scroll_to_start_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
229 home_shortcut_->setAutoRepeat(false);
231 end_shortcut_ = new QShortcut(QKeySequence(Qt::Key_End), this,
232 SLOT(on_scroll_to_end_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
233 end_shortcut_->setAutoRepeat(false);
235 grab_ruler_left_shortcut_ = new QShortcut(QKeySequence(Qt::Key_1), this,
236 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
237 connect(grab_ruler_left_shortcut_, &QShortcut::activated,
238 this, [=]{on_grab_ruler(1);});
239 grab_ruler_left_shortcut_->setAutoRepeat(false);
241 grab_ruler_right_shortcut_ = new QShortcut(QKeySequence(Qt::Key_2), this,
242 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
243 connect(grab_ruler_right_shortcut_, &QShortcut::activated,
244 this, [=]{on_grab_ruler(2);});
245 grab_ruler_right_shortcut_->setAutoRepeat(false);
247 cancel_grab_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Escape), this,
248 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
249 connect(cancel_grab_shortcut_, &QShortcut::activated,
250 this, [=]{grabbed_widget_ = nullptr;});
251 cancel_grab_shortcut_->setAutoRepeat(false);
253 // Trigger the initial event manually. The default device has signals
254 // which were created before this object came into being
257 // Make sure the transparent widgets are on the top
266 GlobalSettings::remove_change_handler(this);
269 ViewType View::get_type() const
271 return ViewTypeTrace;
274 void View::reset_view_state()
276 ViewBase::reset_view_state();
278 segment_display_mode_ = Trace::ShowLastSegmentOnly;
279 segment_selectable_ = false;
284 custom_zero_offset_set_ = false;
285 updating_scroll_ = false;
286 settings_restored_ = false;
287 always_zoom_to_fit_ = false;
289 tick_prefix_ = pv::util::SIPrefix::yocto;
291 time_unit_ = util::TimeUnit::Time;
292 show_cursors_ = false;
293 cursors_ = make_shared<CursorPair>(*this);
294 next_flag_text_ = 'A';
295 trigger_markers_.clear();
296 hover_widget_ = nullptr;
297 grabbed_widget_ = nullptr;
298 hover_point_ = QPoint(-1, -1);
299 scroll_needs_defaults_ = true;
301 scale_at_acq_start_ = 0;
302 offset_at_acq_start_ = 0;
303 suppress_zoom_to_fit_after_acq_ = false;
305 show_cursors_ = false;
306 cursor_state_changed(show_cursors_);
309 // Update the zoom state
310 calculate_tick_spacing();
312 // Make sure the standard bar's segment selector is in sync
313 set_segment_display_mode(segment_display_mode_);
316 Session& View::session()
321 const Session& View::session() const
326 vector< shared_ptr<Signal> > View::signals() const
331 shared_ptr<Signal> View::get_signal_by_signalbase(shared_ptr<data::SignalBase> base) const
333 shared_ptr<Signal> ret_val;
335 for (const shared_ptr<Signal>& s : signals_)
336 if (s->base() == base) {
344 void View::clear_signals()
346 ViewBase::clear_signals();
350 void View::add_signal(const shared_ptr<Signal> signal)
352 ViewBase::add_signalbase(signal->base());
353 signals_.push_back(signal);
355 signal->set_segment_display_mode(segment_display_mode_);
356 signal->set_current_segment(current_segment_);
358 connect(signal->base().get(), SIGNAL(name_changed(const QString&)),
359 this, SLOT(on_signal_name_changed()));
363 void View::clear_decode_signals()
365 ViewBase::clear_decode_signals();
366 decode_traces_.clear();
369 void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
371 ViewBase::add_decode_signal(signal);
373 shared_ptr<DecodeTrace> d(
374 new DecodeTrace(session_, signal, decode_traces_.size()));
375 decode_traces_.push_back(d);
377 d->set_segment_display_mode(segment_display_mode_);
378 d->set_current_segment(current_segment_);
380 connect(signal.get(), SIGNAL(name_changed(const QString&)),
381 this, SLOT(on_signal_name_changed()));
384 void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
386 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
387 if ((*i)->base() == signal) {
388 decode_traces_.erase(i);
393 ViewBase::remove_decode_signal(signal);
397 shared_ptr<Signal> View::get_signal_under_mouse_cursor() const
399 return signal_under_mouse_cursor_;
407 const View* View::view() const
412 Viewport* View::viewport()
417 const Viewport* View::viewport() const
422 QAbstractScrollArea* View::scrollarea() const
427 const Ruler* View::ruler() const
432 void View::save_settings(QSettings &settings) const
434 settings.setValue("scale", scale_);
435 settings.setValue("v_offset",
436 scrollarea_->verticalScrollBar()->sliderPosition());
438 settings.setValue("splitter_state", splitter_->saveState());
439 settings.setValue("segment_display_mode", segment_display_mode_);
441 GlobalSettings::store_timestamp(settings, "offset", offset_);
443 if (custom_zero_offset_set_)
444 GlobalSettings::store_timestamp(settings, "zero_offset", -zero_offset_);
446 settings.remove("zero_offset");
448 for (const shared_ptr<Signal>& signal : signals_) {
449 settings.beginGroup(signal->base()->internal_name());
450 signal->save_settings(settings);
455 void View::restore_settings(QSettings &settings)
457 // Note: It is assumed that this function is only called once,
458 // immediately after restoring a previous session.
460 if (settings.contains("scale"))
461 set_scale(settings.value("scale").toDouble());
463 if (settings.contains("offset")) {
464 // This also updates ruler_offset_
465 set_offset(GlobalSettings::restore_timestamp(settings, "offset"));
468 if (settings.contains("zero_offset"))
469 set_zero_position(GlobalSettings::restore_timestamp(settings, "zero_offset"));
471 if (settings.contains("splitter_state"))
472 splitter_->restoreState(settings.value("splitter_state").toByteArray());
474 if (settings.contains("segment_display_mode"))
475 set_segment_display_mode(
476 (Trace::SegmentDisplayMode)(settings.value("segment_display_mode").toInt()));
478 for (shared_ptr<Signal> signal : signals_) {
479 settings.beginGroup(signal->base()->internal_name());
480 signal->restore_settings(settings);
484 if (settings.contains("v_offset")) {
485 saved_v_offset_ = settings.value("v_offset").toInt();
486 set_v_offset(saved_v_offset_);
487 scroll_needs_defaults_ = false;
488 // Note: see eventFilter() for additional information
491 settings_restored_ = true;
492 suppress_zoom_to_fit_after_acq_ = true;
494 // Update the ruler so that it uses the new scale
495 calculate_tick_spacing();
498 vector< shared_ptr<TimeItem> > View::time_items() const
500 const vector<shared_ptr<Flag>> f(flags());
501 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
504 items.push_back(cursors_);
505 items.push_back(cursors_->first());
506 items.push_back(cursors_->second());
509 for (auto& trigger_marker : trigger_markers_)
510 items.push_back(trigger_marker);
515 double View::scale() const
520 void View::set_scale(double scale)
522 if (scale_ != scale) {
528 void View::set_offset(const pv::util::Timestamp& offset, bool force_update)
530 if ((offset_ != offset) || force_update) {
532 ruler_offset_ = offset_ + zero_offset_;
534 const int w = viewport_->width();
536 const double samplerate = session_.get_samplerate();
537 // Note: sample_num = time * samplerate
538 // Note: samples_per_pixel = samplerate * scale
539 int64_t start_sample = (offset_ * samplerate).convert_to<int64_t>();
540 int64_t end_sample = (offset_ * samplerate).convert_to<int64_t>() +
541 (w * session_.get_samplerate() * scale_);
543 MetadataObject* md_obj =
544 session_.metadata_obj_manager()->find_object_by_type(MetadataObjMainViewRange);
545 md_obj->set_value(MetadataValueStartSample, QVariant((qlonglong)start_sample));
546 md_obj->set_value(MetadataValueEndSample, QVariant((qlonglong)end_sample));
553 const Timestamp& View::offset() const
558 const Timestamp& View::ruler_offset() const
560 return ruler_offset_;
563 void View::set_zero_position(const pv::util::Timestamp& position)
565 zero_offset_ = -position;
566 custom_zero_offset_set_ = true;
568 // Force an immediate update of the offsets
569 set_offset(offset_, true);
573 void View::reset_zero_position()
577 // When enabled, the first trigger for this segment is used as the zero position
578 GlobalSettings settings;
579 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
581 if (trigger_is_zero_time) {
582 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
584 if (triggers.size() > 0)
585 zero_offset_ = triggers.front();
588 custom_zero_offset_set_ = false;
590 // Force an immediate update of the offsets
591 set_offset(offset_, true);
595 pv::util::Timestamp View::zero_offset() const
600 int View::owner_visual_v_offset() const
602 return -scrollarea_->verticalScrollBar()->sliderPosition();
605 void View::set_v_offset(int offset)
607 scrollarea_->verticalScrollBar()->setSliderPosition(offset);
612 void View::set_h_offset(int offset)
614 scrollarea_->horizontalScrollBar()->setSliderPosition(offset);
619 int View::get_h_scrollbar_maximum() const
621 return scrollarea_->horizontalScrollBar()->maximum();
624 unsigned int View::depth() const
629 uint32_t View::current_segment() const
631 return current_segment_;
634 pv::util::SIPrefix View::tick_prefix() const
639 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
641 if (tick_prefix_ != tick_prefix) {
642 tick_prefix_ = tick_prefix;
643 tick_prefix_changed();
647 unsigned int View::tick_precision() const
649 return tick_precision_;
652 void View::set_tick_precision(unsigned tick_precision)
654 if (tick_precision_ != tick_precision) {
655 tick_precision_ = tick_precision;
656 tick_precision_changed();
660 const pv::util::Timestamp& View::tick_period() const
665 unsigned int View::minor_tick_count() const
667 return minor_tick_count_;
670 void View::set_tick_period(const pv::util::Timestamp& tick_period)
672 if (tick_period_ != tick_period) {
673 tick_period_ = tick_period;
674 tick_period_changed();
678 TimeUnit View::time_unit() const
683 void View::set_time_unit(pv::util::TimeUnit time_unit)
685 if (time_unit_ != time_unit) {
686 time_unit_ = time_unit;
691 void View::set_current_segment(uint32_t segment_id)
693 current_segment_ = segment_id;
695 for (const shared_ptr<Signal>& signal : signals_)
696 signal->set_current_segment(current_segment_);
698 for (shared_ptr<DecodeTrace>& dt : decode_traces_)
699 dt->set_current_segment(current_segment_);
702 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
704 trigger_markers_.clear();
705 for (util::Timestamp timestamp : triggers)
706 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, timestamp));
708 if (!custom_zero_offset_set_)
709 reset_zero_position();
713 segment_changed(segment_id);
716 bool View::segment_is_selectable() const
718 return segment_selectable_;
721 Trace::SegmentDisplayMode View::segment_display_mode() const
723 return segment_display_mode_;
726 void View::set_segment_display_mode(Trace::SegmentDisplayMode mode)
728 segment_display_mode_ = mode;
730 for (const shared_ptr<Signal>& signal : signals_)
731 signal->set_segment_display_mode(mode);
733 uint32_t last_segment = session_.get_segment_count() - 1;
736 case Trace::ShowLastSegmentOnly:
737 if (current_segment_ != last_segment)
738 set_current_segment(last_segment);
741 case Trace::ShowLastCompleteSegmentOnly:
742 // Do nothing if we only have one segment so far
743 if (last_segment > 0) {
744 // If the last segment isn't complete, the previous one must be
745 uint32_t segment_id =
746 (session_.all_segments_complete(last_segment)) ?
747 last_segment : last_segment - 1;
749 if (current_segment_ != segment_id)
750 set_current_segment(segment_id);
754 case Trace::ShowSingleSegmentOnly:
755 case Trace::ShowAllSegments:
756 case Trace::ShowAccumulatedIntensity:
758 // Current segment remains as-is
762 segment_selectable_ = true;
764 if ((mode == Trace::ShowAllSegments) || (mode == Trace::ShowAccumulatedIntensity))
765 segment_selectable_ = false;
769 segment_display_mode_changed((int)mode, segment_selectable_);
772 void View::zoom(double steps)
774 zoom(steps, viewport_->width() / 2);
777 void View::zoom(double steps, int offset)
779 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
782 void View::zoom_fit(bool gui_state)
784 // Act as one-shot when stopped, toggle along with the GUI otherwise
785 if (session_.get_capture_state() == Session::Stopped) {
786 always_zoom_to_fit_ = false;
787 always_zoom_to_fit_changed(false);
789 always_zoom_to_fit_ = gui_state;
790 always_zoom_to_fit_changed(gui_state);
793 const pair<Timestamp, Timestamp> extents = get_time_extents();
794 const Timestamp delta = extents.second - extents.first;
795 if (delta < Timestamp("1e-12"))
799 const int w = viewport_->width();
803 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
804 set_scale_offset(scale.convert_to<double>(), extents.first);
807 void View::focus_on_range(uint64_t start_sample, uint64_t end_sample)
810 const int w = viewport_->width();
814 const double samplerate = session_.get_samplerate();
816 const uint64_t sample_delta = (end_sample - start_sample);
818 // Note: We add 20% margin on the left and 5% on the right
819 const Timestamp delta = (sample_delta * 1.25) / samplerate;
821 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
822 const Timestamp offset = (start_sample - sample_delta * 0.20) / samplerate;
824 set_scale_offset(scale.convert_to<double>(), offset);
827 void View::set_scale_offset(double scale, const Timestamp& offset)
829 // Disable sticky scrolling / always zoom to fit when acquisition runs
830 // and user drags the viewport
831 if ((scale_ == scale) && (offset_ != offset) &&
832 (session_.get_capture_state() == Session::Running)) {
834 if (sticky_scrolling_) {
835 sticky_scrolling_ = false;
836 sticky_scrolling_changed(false);
839 if (always_zoom_to_fit_) {
840 always_zoom_to_fit_ = false;
841 always_zoom_to_fit_changed(false);
848 calculate_tick_spacing();
855 vector< shared_ptr<SignalData> > View::get_visible_data() const
857 // Make a set of all the visible data objects
858 vector< shared_ptr<SignalData> > visible_data;
859 for (const shared_ptr<Signal>& sig : signals_)
861 visible_data.push_back(sig->data());
866 pair<Timestamp, Timestamp> View::get_time_extents() const
868 boost::optional<Timestamp> left_time, right_time;
870 vector< shared_ptr<SignalData> > data;
871 if (signals_.size() == 0)
872 return make_pair(0, 0);
874 data.push_back(signals_.front()->data());
876 for (const shared_ptr<SignalData>& d : data) {
877 const vector< shared_ptr<Segment> > segments = d->segments();
878 for (const shared_ptr<Segment>& s : segments) {
879 double samplerate = s->samplerate();
880 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
882 const Timestamp start_time = s->start_time();
883 left_time = left_time ?
884 min(*left_time, start_time) :
886 right_time = right_time ?
887 max(*right_time, start_time + d->max_sample_count() / samplerate) :
888 start_time + d->max_sample_count() / samplerate;
892 if (!left_time || !right_time)
893 return make_pair(0, 0);
895 assert(*left_time < *right_time);
896 return make_pair(*left_time, *right_time);
899 bool View::colored_bg() const
904 bool View::cursors_shown() const
906 return show_cursors_;
909 void View::show_cursors(bool show)
911 if (show_cursors_ != show) {
912 show_cursors_ = show;
914 cursor_state_changed(show);
920 void View::set_cursors(pv::util::Timestamp& first, pv::util::Timestamp& second)
924 cursors_->first()->set_time(first);
925 cursors_->second()->set_time(second);
931 void View::center_cursors()
935 const double time_width = scale_ * viewport_->width();
936 cursors_->first()->set_time(offset_ + time_width * 0.4);
937 cursors_->second()->set_time(offset_ + time_width * 0.6);
943 shared_ptr<CursorPair> View::cursors() const
948 shared_ptr<Flag> View::add_flag(const Timestamp& time)
950 shared_ptr<Flag> flag =
951 make_shared<Flag>(*this, time, QString("%1").arg(next_flag_text_));
952 flags_.push_back(flag);
954 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
955 (next_flag_text_ + 1);
957 time_item_appearance_changed(true, true);
961 void View::remove_flag(shared_ptr<Flag> flag)
964 time_item_appearance_changed(true, true);
967 vector< shared_ptr<Flag> > View::flags() const
969 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
970 stable_sort(flags.begin(), flags.end(),
971 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
972 return a->time() < b->time();
978 const QPoint& View::hover_point() const
983 const QWidget* View::hover_widget() const
985 return hover_widget_;
988 int64_t View::get_nearest_level_change(const QPoint &p)
990 // Is snapping disabled?
991 if (snap_distance_ == 0)
995 entry_t(shared_ptr<Signal> s) :
996 signal(s), delta(numeric_limits<int64_t>::max()), sample(-1), is_dense(false) {}
997 shared_ptr<Signal> signal;
1003 vector<entry_t> list;
1005 // Create list of signals to consider
1006 if (signal_under_mouse_cursor_)
1007 list.emplace_back(signal_under_mouse_cursor_);
1009 for (shared_ptr<Signal> s : signals_) {
1013 list.emplace_back(s);
1016 // Get data for listed signals
1017 for (entry_t &e : list) {
1018 // Calculate sample number from cursor position
1019 const double samples_per_pixel = e.signal->base()->get_samplerate() * scale();
1020 const int64_t x_offset = offset().convert_to<double>() / scale();
1021 const int64_t sample_num = max(((x_offset + p.x()) * samples_per_pixel), 0.0);
1023 vector<data::LogicSegment::EdgePair> edges =
1024 e.signal->get_nearest_level_changes(sample_num);
1030 const int64_t first_sample_delta = abs(sample_num - edges.front().first);
1031 const int64_t first_delta = first_sample_delta / samples_per_pixel;
1032 e.delta = first_delta;
1033 e.sample = edges.front().first;
1035 // Check second edge if available
1036 if (edges.size() == 2) {
1037 // Note: -1 because this is usually the right edge and sample points are left-aligned
1038 const int64_t second_sample_delta = abs(sample_num - edges.back().first - 1);
1039 const int64_t second_delta = second_sample_delta / samples_per_pixel;
1041 // If both edges are too close, we mark this signal as being dense
1042 if ((first_delta + second_delta) <= snap_distance_)
1045 if (second_delta < first_delta) {
1046 e.delta = second_delta;
1047 e.sample = edges.back().first;
1052 // Look for the best match: non-dense first, then dense
1053 entry_t *match = nullptr;
1055 for (entry_t &e : list) {
1056 if (e.delta > snap_distance_ || e.is_dense)
1060 if (e.delta < match->delta)
1067 for (entry_t &e : list) {
1072 if (e.delta < match->delta)
1080 // Somewhat ugly hack to make TimeItem::drag_by() work
1081 signal_under_mouse_cursor_ = match->signal;
1083 return match->sample;
1089 void View::restack_all_trace_tree_items()
1091 // Make a list of owners that is sorted from deepest first
1092 const vector<shared_ptr<TraceTreeItem>> items(
1093 list_by_type<TraceTreeItem>());
1094 set< TraceTreeItemOwner* > owners;
1095 for (const auto &r : items)
1096 owners.insert(r->owner());
1097 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
1098 sort(sorted_owners.begin(), sorted_owners.end(),
1099 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
1100 return a->depth() > b->depth(); });
1102 // Restack the items recursively
1103 for (auto &o : sorted_owners)
1106 // Animate the items to their destination
1107 for (const auto &i : items)
1108 i->animate_to_layout_v_offset();
1111 int View::header_width() const
1113 return header_->extended_size_hint().width();
1116 void View::on_setting_changed(const QString &key, const QVariant &value)
1118 GlobalSettings settings;
1120 if (key == GlobalSettings::Key_View_ColoredBG) {
1121 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
1122 viewport_->update();
1125 if ((key == GlobalSettings::Key_View_ShowSamplingPoints) ||
1126 (key == GlobalSettings::Key_View_ShowAnalogMinorGrid))
1127 viewport_->update();
1129 if (key == GlobalSettings::Key_View_TriggerIsZeroTime)
1130 on_settingViewTriggerIsZeroTime_changed(value);
1132 if (key == GlobalSettings::Key_View_SnapDistance)
1133 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
1136 void View::trigger_event(int segment_id, util::Timestamp location)
1138 // TODO This doesn't work if we're showing multiple segments at once
1139 if ((uint32_t)segment_id != current_segment_)
1142 if (!custom_zero_offset_set_)
1143 reset_zero_position();
1145 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
1148 void View::get_scroll_layout(double &length, Timestamp &offset) const
1150 const pair<Timestamp, Timestamp> extents = get_time_extents();
1151 length = ((extents.second - extents.first) / scale_).convert_to<double>();
1152 offset = offset_ / scale_;
1155 void View::set_zoom(double scale, int offset)
1157 // Reset the "always zoom to fit" feature as the user changed the zoom
1158 always_zoom_to_fit_ = false;
1159 always_zoom_to_fit_changed(false);
1161 const Timestamp cursor_offset = offset_ + scale_ * offset;
1162 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
1163 const Timestamp new_offset = cursor_offset - new_scale * offset;
1164 set_scale_offset(new_scale.convert_to<double>(), new_offset);
1167 void View::calculate_tick_spacing()
1169 const double SpacingIncrement = 10.0f;
1170 const double MinValueSpacing = 40.0f;
1172 // Figure out the highest numeric value visible on a label
1173 const QSize areaSize = viewport_->size();
1174 const Timestamp max_time = max(fabs(offset_),
1175 fabs(offset_ + scale_ * areaSize.width()));
1177 double min_width = SpacingIncrement;
1178 double label_width, tick_period_width;
1180 QFontMetrics m(QApplication::font());
1182 // Copies of the member variables with the same name, used in the calculation
1183 // and written back afterwards, so that we don't emit signals all the time
1184 // during the calculation.
1185 pv::util::Timestamp tick_period = tick_period_;
1186 pv::util::SIPrefix tick_prefix = tick_prefix_;
1187 unsigned tick_precision = tick_precision_;
1190 const double min_period = scale_ * min_width;
1192 const int order = (int)floorf(log10f(min_period));
1193 const pv::util::Timestamp order_decimal =
1194 pow(pv::util::Timestamp(10), order);
1196 // Allow for a margin of error so that a scale unit of 1 can be used.
1197 // Otherwise, for a SU of 1 the tick period will almost always be below
1198 // the min_period by a small amount - and thus skipped in favor of 2.
1199 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
1200 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
1201 double tp_with_margin;
1202 unsigned int unit = 0;
1205 tp_with_margin = order_decimal.convert_to<double>() *
1206 (ScaleUnits[unit++] + tp_margin);
1207 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
1209 minor_tick_count_ = (unit == 2) ? 4 : 5;
1210 tick_period = order_decimal * ScaleUnits[unit - 1];
1211 tick_prefix = static_cast<pv::util::SIPrefix>(
1212 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
1214 // Precision is the number of fractional digits required, not
1215 // taking the prefix into account (and it must never be negative)
1216 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
1218 tick_period_width = (tick_period / scale_).convert_to<double>();
1220 const QString label_text = Ruler::format_time_with_distance(
1221 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
1223 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
1224 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
1227 min_width += SpacingIncrement;
1228 } while (tick_period_width < label_width);
1230 set_tick_period(tick_period);
1231 set_tick_prefix(tick_prefix);
1232 set_tick_precision(tick_precision);
1235 void View::adjust_top_margin()
1239 const QSize areaSize = viewport_->size();
1241 const pair<int, int> extents = v_extents();
1242 const int top_margin = owner_visual_v_offset() + extents.first;
1243 const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second;
1245 // Do we have empty space at the top while the last trace goes out of screen?
1246 if ((top_margin > 0) && (trace_bottom > areaSize.height())) {
1247 const int trace_height = extents.second - extents.first;
1249 // Center everything vertically if there is enough space
1250 if (areaSize.height() >= trace_height)
1251 set_v_offset(extents.first -
1252 ((areaSize.height() - trace_height) / 2));
1254 // Remove the top margin to make as many traces fit on screen as possible
1255 set_v_offset(extents.first);
1259 void View::update_scroll()
1262 QScrollBar *hscrollbar = scrollarea_->horizontalScrollBar();
1263 QScrollBar *vscrollbar = scrollarea_->verticalScrollBar();
1265 const QSize areaSize = viewport_->size();
1267 // Set the horizontal scroll bar
1270 get_scroll_layout(length, offset);
1271 length = max(length - areaSize.width(), 0.0);
1273 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
1275 hscrollbar->setPageStep(areaSize.width() / 2);
1276 hscrollbar->setSingleStep(major_tick_distance);
1278 updating_scroll_ = true;
1280 if (length < MaxScrollValue) {
1281 hscrollbar->setRange(0, length);
1282 hscrollbar->setSliderPosition(offset.convert_to<double>());
1284 hscrollbar->setRange(0, MaxScrollValue);
1285 hscrollbar->setSliderPosition(
1286 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
1289 updating_scroll_ = false;
1291 // Set the vertical scrollbar
1292 vscrollbar->setPageStep(areaSize.height());
1293 vscrollbar->setSingleStep(areaSize.height() / 8);
1295 const pair<int, int> extents = v_extents();
1297 // Don't change the scrollbar range if there are no traces
1298 if (extents.first != extents.second) {
1299 int top_margin = ViewScrollMargin;
1300 int btm_margin = ViewScrollMargin;
1302 vscrollbar->setRange(extents.first - areaSize.height() + top_margin,
1303 extents.second - btm_margin);
1306 if (scroll_needs_defaults_) {
1307 set_scroll_default();
1308 scroll_needs_defaults_ = false;
1312 void View::reset_scroll()
1314 scrollarea_->verticalScrollBar()->setRange(0, 0);
1317 void View::set_scroll_default()
1321 const QSize areaSize = viewport_->size();
1323 const pair<int, int> extents = v_extents();
1324 const int trace_height = extents.second - extents.first;
1326 // Do all traces fit in the view?
1327 if (areaSize.height() >= trace_height)
1328 // Center all traces vertically
1329 set_v_offset(extents.first -
1330 ((areaSize.height() - trace_height) / 2));
1332 // Put the first trace at the top, letting the bottom ones overflow
1333 set_v_offset(extents.first);
1336 void View::determine_if_header_was_shrunk()
1338 const int header_pane_width =
1339 splitter_->sizes().front(); // clazy:exclude=detaching-temporary
1341 // Allow for a slight margin of error so that we also accept
1342 // slight differences when e.g. a label name change increased
1343 // the overall width
1344 header_was_shrunk_ = (header_pane_width < (header_width() - 10));
1347 void View::resize_header_to_fit()
1349 // Setting the maximum width of the header widget doesn't work as
1350 // expected because the splitter would allow the user to make the
1351 // pane wider than that, creating empty space as a result.
1352 // To make this work, we stricly enforce the maximum width by
1353 // expanding the header unless the user shrunk it on purpose.
1354 // As we're then setting the width of the header pane, we set the
1355 // splitter to the maximum allowed position.
1357 int splitter_area_width = 0;
1358 for (int w : splitter_->sizes()) // clazy:exclude=range-loop
1359 splitter_area_width += w;
1361 // Make sure the header has enough horizontal space to show all labels fully
1362 QList<int> pane_sizes;
1363 pane_sizes.push_back(header_->extended_size_hint().width());
1364 pane_sizes.push_back(splitter_area_width - header_->extended_size_hint().width());
1365 splitter_->setSizes(pane_sizes);
1368 void View::update_layout()
1373 TraceTreeItemOwner* View::find_prevalent_trace_group(
1374 const shared_ptr<sigrok::ChannelGroup> &group,
1375 const map<shared_ptr<data::SignalBase>, shared_ptr<Signal> > &signal_map)
1379 set<TraceTreeItemOwner*> owners;
1380 vector<TraceTreeItemOwner*> owner_list;
1382 // Make a set and a list of all the owners
1383 for (const auto& channel : group->channels()) {
1384 for (auto& entry : signal_map) {
1385 if (entry.first->channel() == channel) {
1386 TraceTreeItemOwner *const o = (entry.second)->owner();
1387 owner_list.push_back(o);
1393 // Iterate through the list of owners, and find the most prevalent
1394 size_t max_prevalence = 0;
1395 TraceTreeItemOwner *prevalent_owner = nullptr;
1396 for (TraceTreeItemOwner *owner : owners) {
1397 const size_t prevalence = count_if(
1398 owner_list.begin(), owner_list.end(),
1399 [&](TraceTreeItemOwner *o) { return o == owner; });
1400 if (prevalence > max_prevalence) {
1401 max_prevalence = prevalence;
1402 prevalent_owner = owner;
1406 return prevalent_owner;
1409 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
1410 const vector< shared_ptr<sigrok::Channel> > &channels,
1411 const map<shared_ptr<data::SignalBase>, shared_ptr<Signal> > &signal_map,
1412 set< shared_ptr<Trace> > &add_list)
1414 vector< shared_ptr<Trace> > filtered_traces;
1416 for (const auto& channel : channels) {
1417 for (auto& entry : signal_map) {
1418 if (entry.first->channel() == channel) {
1419 shared_ptr<Trace> trace = entry.second;
1420 const auto list_iter = add_list.find(trace);
1421 if (list_iter == add_list.end())
1424 filtered_traces.push_back(trace);
1425 add_list.erase(list_iter);
1430 return filtered_traces;
1433 void View::determine_time_unit()
1435 // Check whether we know the sample rate and hence can use time as the unit
1436 if (time_unit_ == util::TimeUnit::Samples) {
1437 // Check all signals but...
1438 for (const shared_ptr<Signal>& signal : signals_) {
1439 const shared_ptr<SignalData> data = signal->data();
1441 // ...only check first segment of each
1442 const vector< shared_ptr<Segment> > segments = data->segments();
1443 if (!segments.empty())
1444 if (segments[0]->samplerate()) {
1445 set_time_unit(util::TimeUnit::Time);
1452 bool View::eventFilter(QObject *object, QEvent *event)
1454 const QEvent::Type type = event->type();
1456 if (type == QEvent::MouseMove) {
1459 hover_widget_ = qobject_cast<QWidget*>(object);
1461 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1462 if (object == viewport_)
1463 hover_point_ = mouse_event->pos();
1464 else if (object == ruler_)
1465 hover_point_ = mouse_event->pos();
1466 else if (object == header_)
1467 hover_point_ = QPoint(0, mouse_event->y());
1469 hover_point_ = QPoint(-1, -1);
1471 update_hover_point();
1473 if (grabbed_widget_) {
1474 int64_t nearest = get_nearest_level_change(hover_point_);
1475 pv::util::Timestamp mouse_time = offset_ + hover_point_.x() * scale_;
1477 if (nearest == -1) {
1478 grabbed_widget_->set_time(mouse_time);
1480 grabbed_widget_->set_time(nearest / get_signal_under_mouse_cursor()->base()->get_samplerate());
1484 } else if (type == QEvent::MouseButtonPress) {
1485 grabbed_widget_ = nullptr;
1487 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1488 if ((object == viewport_) && (mouse_event->button() & Qt::LeftButton)) {
1489 // Send event to all trace tree items
1490 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1491 list_by_type<TraceTreeItem>());
1492 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1493 r->mouse_left_press_event(mouse_event);
1495 } else if (type == QEvent::Leave) {
1496 hover_point_ = QPoint(-1, -1);
1497 update_hover_point();
1498 } else if (type == QEvent::Show) {
1500 // This is somewhat of a hack, unfortunately. We cannot use
1501 // set_v_offset() from within restore_settings() as the view
1502 // at that point is neither visible nor properly sized.
1503 // This is the least intrusive workaround I could come up
1504 // with: set the vertical offset (or scroll defaults) when
1505 // the view is shown, which happens after all widgets were
1506 // resized to their final sizes.
1509 if (settings_restored_)
1510 determine_if_header_was_shrunk();
1512 resize_header_to_fit();
1514 if (scroll_needs_defaults_) {
1515 set_scroll_default();
1516 scroll_needs_defaults_ = false;
1519 if (saved_v_offset_) {
1520 set_v_offset(saved_v_offset_);
1521 saved_v_offset_ = 0;
1525 return QObject::eventFilter(object, event);
1528 void View::contextMenuEvent(QContextMenuEvent *event)
1530 QPoint pos = event->pos() - QPoint(0, ruler_->sizeHint().height());
1532 const shared_ptr<ViewItem> r = viewport_->get_mouse_over_item(pos);
1536 QMenu *menu = r->create_view_context_menu(this, pos);
1538 menu->popup(event->globalPos());
1541 void View::resizeEvent(QResizeEvent* event)
1543 // Only adjust the top margin if we shrunk vertically
1544 if (event->size().height() < event->oldSize().height())
1545 adjust_top_margin();
1550 void View::update_hover_point()
1552 // Determine signal that the mouse cursor is hovering over
1553 signal_under_mouse_cursor_.reset();
1554 if (hover_widget_ == this) {
1555 for (const shared_ptr<Signal>& s : signals_) {
1556 const pair<int, int> extents = s->v_extents();
1557 const int top = s->get_visual_y() + extents.first;
1558 const int btm = s->get_visual_y() + extents.second;
1559 if ((hover_point_.y() >= top) && (hover_point_.y() <= btm)
1560 && s->base()->enabled())
1561 signal_under_mouse_cursor_ = s;
1565 // Update all trace tree items
1566 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1567 list_by_type<TraceTreeItem>());
1568 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1569 r->hover_point_changed(hover_point_);
1571 // Notify this view's listeners
1572 hover_point_changed(hover_widget_, hover_point_);
1574 // Hover point is -1 when invalid and 0 for the header
1575 if (hover_point_.x() > 0) {
1576 // Notify global listeners
1577 pv::util::Timestamp mouse_time = offset_ + hover_point_.x() * scale_;
1578 int64_t sample_num = (mouse_time * session_.get_samplerate()).convert_to<int64_t>();
1580 MetadataObject* md_obj =
1581 session_.metadata_obj_manager()->find_object_by_type(MetadataObjMousePos);
1582 md_obj->set_value(MetadataValueStartSample, QVariant((qlonglong)sample_num));
1586 void View::row_item_appearance_changed(bool label, bool content)
1591 viewport_->update();
1594 void View::time_item_appearance_changed(bool label, bool content)
1599 // Make sure the header pane width is updated, too
1604 viewport_->update();
1607 void View::extents_changed(bool horz, bool vert)
1610 (horz ? TraceTreeItemHExtentsChanged : 0) |
1611 (vert ? TraceTreeItemVExtentsChanged : 0);
1613 if (!lazy_event_handler_.isActive())
1614 lazy_event_handler_.start();
1617 void View::on_signal_name_changed()
1619 if (!header_was_shrunk_)
1620 resize_header_to_fit();
1623 void View::on_splitter_moved()
1625 // The header can only shrink when the splitter is moved manually
1626 determine_if_header_was_shrunk();
1628 if (!header_was_shrunk_)
1629 resize_header_to_fit();
1632 void View::on_zoom_in_shortcut_triggered()
1637 void View::on_zoom_out_shortcut_triggered()
1642 void View::on_scroll_to_start_shortcut_triggered()
1647 void View::on_scroll_to_end_shortcut_triggered()
1649 set_h_offset(get_h_scrollbar_maximum());
1652 void View::h_scroll_value_changed(int value)
1654 if (updating_scroll_)
1657 // Disable sticky scrolling when user moves the horizontal scroll bar
1658 // during a running acquisition
1659 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1660 sticky_scrolling_ = false;
1661 sticky_scrolling_changed(false);
1664 const int range = scrollarea_->horizontalScrollBar()->maximum();
1665 if (range < MaxScrollValue)
1666 set_offset(scale_ * value);
1670 get_scroll_layout(length, offset);
1671 set_offset(scale_ * length * value / MaxScrollValue);
1675 viewport_->update();
1678 void View::v_scroll_value_changed()
1681 viewport_->update();
1684 void View::on_grab_ruler(int ruler_id)
1686 if (!cursors_shown()) {
1691 // Release the grabbed widget if its trigger hotkey was pressed twice
1693 grabbed_widget_ = (grabbed_widget_ == cursors_->first().get()) ?
1694 nullptr : cursors_->first().get();
1696 grabbed_widget_ = (grabbed_widget_ == cursors_->second().get()) ?
1697 nullptr : cursors_->second().get();
1699 if (grabbed_widget_)
1700 grabbed_widget_->set_time(ruler_->get_absolute_time_from_x_pos(
1701 mapFromGlobal(QCursor::pos()).x() - header_width()));
1704 void View::signals_changed()
1706 using sigrok::Channel;
1708 vector< shared_ptr<Channel> > channels;
1709 shared_ptr<sigrok::Device> sr_dev;
1710 bool signals_added_or_removed = false;
1712 // Do we need to set the vertical scrollbar to its default position later?
1713 // We do if there are no traces, i.e. the scroll bar has no range set
1714 bool reset_scrollbar =
1715 (scrollarea_->verticalScrollBar()->minimum() ==
1716 scrollarea_->verticalScrollBar()->maximum());
1718 if (!session_.device()) {
1722 sr_dev = session_.device()->device();
1724 channels = sr_dev->channels();
1727 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1729 // Make a list of traces that are being added, and a list of traces
1730 // that are being removed
1731 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1732 const set<shared_ptr<Trace>> prev_traces(
1733 prev_trace_list.begin(), prev_trace_list.end());
1735 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1737 #ifdef ENABLE_DECODE
1738 traces.insert(decode_traces_.begin(), decode_traces_.end());
1741 set< shared_ptr<Trace> > add_traces;
1742 set_difference(traces.begin(), traces.end(),
1743 prev_traces.begin(), prev_traces.end(),
1744 inserter(add_traces, add_traces.begin()));
1746 set< shared_ptr<Trace> > remove_traces;
1747 set_difference(prev_traces.begin(), prev_traces.end(),
1748 traces.begin(), traces.end(),
1749 inserter(remove_traces, remove_traces.begin()));
1751 // Make a look-up table of sigrok Channels to pulseview Signals
1752 map<shared_ptr<data::SignalBase>, shared_ptr<Signal> > signal_map;
1753 for (const shared_ptr<Signal>& sig : signals_)
1754 signal_map[sig->base()] = sig;
1756 // Populate channel groups
1758 for (auto& entry : sr_dev->channel_groups()) {
1759 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1761 if (group->channels().size() <= 1)
1764 // Find best trace group to add to
1765 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1768 // If there is no trace group, create one
1769 shared_ptr<TraceGroup> new_trace_group;
1771 new_trace_group.reset(new TraceGroup());
1772 owner = new_trace_group.get();
1775 // Extract traces for the trace group, removing them from
1777 const vector< shared_ptr<Trace> > new_traces_in_group =
1778 extract_new_traces_for_channels(group->channels(),
1779 signal_map, add_traces);
1781 // Add the traces to the group
1782 const pair<int, int> prev_v_extents = owner->v_extents();
1783 int offset = prev_v_extents.second - prev_v_extents.first;
1784 for (const shared_ptr<Trace>& trace : new_traces_in_group) {
1786 owner->add_child_item(trace);
1788 const pair<int, int> extents = trace->v_extents();
1789 if (trace->enabled())
1790 offset += -extents.first;
1791 trace->force_to_v_offset(offset);
1792 if (trace->enabled())
1793 offset += extents.second;
1796 if (new_trace_group) {
1797 // Assign proper vertical offsets to each channel in the group
1798 new_trace_group->restack_items();
1800 // If this is a new group, enqueue it in the new top level
1802 if (!new_traces_in_group.empty())
1803 new_top_level_items.push_back(new_trace_group);
1807 // Enqueue the remaining logic channels in a group
1808 vector< shared_ptr<Channel> > logic_channels;
1809 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1810 [](const shared_ptr<Channel>& c) {
1811 return c->type() == sigrok::ChannelType::LOGIC; });
1813 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1814 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1816 if (non_grouped_logic_signals.size() > 0) {
1817 const shared_ptr<TraceGroup> non_grouped_trace_group(
1818 make_shared<TraceGroup>());
1819 for (const shared_ptr<Trace>& trace : non_grouped_logic_signals)
1820 non_grouped_trace_group->add_child_item(trace);
1822 non_grouped_trace_group->restack_items();
1823 new_top_level_items.push_back(non_grouped_trace_group);
1826 // Enqueue the remaining channels as free ungrouped traces
1827 const vector< shared_ptr<Trace> > new_top_level_signals =
1828 extract_new_traces_for_channels(channels, signal_map, add_traces);
1829 new_top_level_items.insert(new_top_level_items.end(),
1830 new_top_level_signals.begin(), new_top_level_signals.end());
1832 // Enqueue any remaining traces i.e. decode traces
1833 new_top_level_items.insert(new_top_level_items.end(),
1834 add_traces.begin(), add_traces.end());
1836 // Remove any removed traces
1837 for (const shared_ptr<Trace>& trace : remove_traces) {
1838 TraceTreeItemOwner *const owner = trace->owner();
1840 owner->remove_child_item(trace);
1841 signals_added_or_removed = true;
1844 // Remove any empty trace groups
1845 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1846 if (group->child_items().size() == 0) {
1847 remove_child_item(group);
1851 // Add and position the pending top levels items
1852 int offset = v_extents().second;
1853 for (shared_ptr<TraceTreeItem> item : new_top_level_items) {
1854 add_child_item(item);
1856 // Position the item after the last item or at the top if there is none
1857 const pair<int, int> extents = item->v_extents();
1859 if (item->enabled())
1860 offset += -extents.first;
1862 item->force_to_v_offset(offset);
1864 if (item->enabled())
1865 offset += extents.second;
1866 signals_added_or_removed = true;
1870 if (signals_added_or_removed && !header_was_shrunk_)
1871 resize_header_to_fit();
1876 viewport_->update();
1878 if (reset_scrollbar)
1879 set_scroll_default();
1882 void View::capture_state_updated(int state)
1884 GlobalSettings settings;
1886 if (state == Session::Running) {
1887 set_time_unit(util::TimeUnit::Samples);
1889 trigger_markers_.clear();
1890 if (!custom_zero_offset_set_)
1891 set_zero_position(0);
1893 scale_at_acq_start_ = scale_;
1894 offset_at_acq_start_ = offset_;
1896 // Activate "always zoom to fit" if the setting is enabled and we're
1897 // the main view of this session (other trace views may be used for
1898 // zooming and we don't want to mess them up)
1899 bool state = settings.value(GlobalSettings::Key_View_ZoomToFitDuringAcq).toBool();
1900 if (is_main_view_ && state) {
1901 always_zoom_to_fit_ = true;
1902 always_zoom_to_fit_changed(always_zoom_to_fit_);
1905 // Enable sticky scrolling if the setting is enabled
1906 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
1908 // Reset all traces to segment 0
1909 current_segment_ = 0;
1910 set_current_segment(current_segment_);
1913 if (state == Session::Stopped) {
1914 // After acquisition has stopped we need to re-calculate the ticks once
1915 // as it's otherwise done when the user pans or zooms, which is too late
1916 calculate_tick_spacing();
1918 // Reset "always zoom to fit", the acquisition has stopped
1919 if (always_zoom_to_fit_) {
1920 // Perform a final zoom-to-fit before disabling
1921 zoom_fit(always_zoom_to_fit_);
1922 always_zoom_to_fit_ = false;
1923 always_zoom_to_fit_changed(always_zoom_to_fit_);
1926 bool zoom_to_fit_after_acq =
1927 settings.value(GlobalSettings::Key_View_ZoomToFitAfterAcq).toBool();
1929 // Only perform zoom-to-fit if the user hasn't altered the viewport and
1930 // we didn't restore settings in the meanwhile
1931 if (zoom_to_fit_after_acq &&
1932 !suppress_zoom_to_fit_after_acq_ &&
1933 (scale_ == scale_at_acq_start_) &&
1934 (offset_ == offset_at_acq_start_))
1935 zoom_fit(false); // We're stopped, so the GUI state doesn't matter
1937 suppress_zoom_to_fit_after_acq_ = false;
1941 void View::on_new_segment(int new_segment_id)
1943 on_segment_changed(new_segment_id);
1946 void View::on_segment_completed(int segment_id)
1948 on_segment_changed(segment_id);
1951 void View::on_segment_changed(int segment)
1953 switch (segment_display_mode_) {
1954 case Trace::ShowLastSegmentOnly:
1955 case Trace::ShowSingleSegmentOnly:
1956 set_current_segment(segment);
1959 case Trace::ShowLastCompleteSegmentOnly:
1960 // Only update if all segments are complete
1961 if (session_.all_segments_complete(segment))
1962 set_current_segment(segment);
1965 case Trace::ShowAllSegments:
1966 case Trace::ShowAccumulatedIntensity:
1972 void View::on_settingViewTriggerIsZeroTime_changed(const QVariant new_value)
1976 if (!custom_zero_offset_set_)
1977 reset_zero_position();
1980 void View::perform_delayed_view_update()
1982 if (always_zoom_to_fit_) {
1984 } else if (sticky_scrolling_) {
1985 // Make right side of the view sticky
1988 get_scroll_layout(length, offset);
1990 const QSize areaSize = viewport_->size();
1991 length = max(length - areaSize.width(), 0.0);
1993 set_offset(scale_ * length);
1996 determine_time_unit();
1999 viewport_->update();
2002 void View::process_sticky_events()
2004 if (sticky_events_ & TraceTreeItemHExtentsChanged)
2006 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
2007 restack_all_trace_tree_items();
2011 // Clear the sticky events
2015 } // namespace trace
2016 } // namespace views