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/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;
84 using std::unordered_map;
85 using std::unordered_set;
92 const Timestamp View::MaxScale("1e9");
93 const Timestamp View::MinScale("1e-12");
95 const int View::MaxScrollValue = INT_MAX / 2;
97 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 connect(scrollarea_->horizontalScrollBar(), SIGNAL(valueChanged(int)),
184 this, SLOT(h_scroll_value_changed(int)));
185 connect(scrollarea_->verticalScrollBar(), SIGNAL(valueChanged(int)),
186 this, SLOT(v_scroll_value_changed()));
188 connect(header_, SIGNAL(selection_changed()),
189 ruler_, SLOT(clear_selection()));
190 connect(ruler_, SIGNAL(selection_changed()),
191 header_, SLOT(clear_selection()));
193 connect(header_, SIGNAL(selection_changed()),
194 this, SIGNAL(selection_changed()));
195 connect(ruler_, SIGNAL(selection_changed()),
196 this, SIGNAL(selection_changed()));
198 connect(splitter_, SIGNAL(splitterMoved(int, int)),
199 this, SLOT(on_splitter_moved()));
201 connect(&lazy_event_handler_, SIGNAL(timeout()),
202 this, SLOT(process_sticky_events()));
203 lazy_event_handler_.setSingleShot(true);
205 // Set up local keyboard shortcuts
206 zoom_in_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Plus), this,
207 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
208 zoom_in_shortcut_->setAutoRepeat(false);
210 zoom_out_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Minus), this,
211 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
212 zoom_out_shortcut_->setAutoRepeat(false);
214 zoom_in_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Up), this,
215 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
216 zoom_out_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Down), this,
217 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
219 home_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Home), this,
220 SLOT(on_scroll_to_start_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
221 home_shortcut_->setAutoRepeat(false);
223 end_shortcut_ = new QShortcut(QKeySequence(Qt::Key_End), this,
224 SLOT(on_scroll_to_end_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
225 end_shortcut_->setAutoRepeat(false);
227 grab_ruler_left_shortcut_ = new QShortcut(QKeySequence(Qt::Key_1), this,
228 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
229 connect(grab_ruler_left_shortcut_, &QShortcut::activated,
230 this, [=]{on_grab_ruler(1);});
231 grab_ruler_left_shortcut_->setAutoRepeat(false);
233 grab_ruler_right_shortcut_ = new QShortcut(QKeySequence(Qt::Key_2), this,
234 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
235 connect(grab_ruler_right_shortcut_, &QShortcut::activated,
236 this, [=]{on_grab_ruler(2);});
237 grab_ruler_right_shortcut_->setAutoRepeat(false);
239 cancel_grab_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Escape), this,
240 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
241 connect(cancel_grab_shortcut_, &QShortcut::activated,
242 this, [=]{grabbed_widget_ = nullptr;});
243 cancel_grab_shortcut_->setAutoRepeat(false);
245 // Trigger the initial event manually. The default device has signals
246 // which were created before this object came into being
249 // Make sure the transparent widgets are on the top
258 GlobalSettings::remove_change_handler(this);
261 ViewType View::get_type() const
263 return ViewTypeTrace;
266 void View::reset_view_state()
268 ViewBase::reset_view_state();
270 segment_display_mode_ = Trace::ShowLastSegmentOnly;
271 segment_selectable_ = false;
276 custom_zero_offset_set_ = false;
277 updating_scroll_ = false;
278 settings_restored_ = false;
279 always_zoom_to_fit_ = false;
281 tick_prefix_ = pv::util::SIPrefix::yocto;
283 time_unit_ = util::TimeUnit::Time;
284 show_cursors_ = false;
285 cursors_ = make_shared<CursorPair>(*this);
286 next_flag_text_ = 'A';
287 trigger_markers_.clear();
288 hover_widget_ = nullptr;
289 grabbed_widget_ = nullptr;
290 hover_point_ = QPoint(-1, -1);
291 scroll_needs_defaults_ = true;
293 scale_at_acq_start_ = 0;
294 offset_at_acq_start_ = 0;
295 suppress_zoom_to_fit_after_acq_ = false;
297 show_cursors_ = false;
298 cursor_state_changed(show_cursors_);
301 // Update the zoom state
302 calculate_tick_spacing();
304 // Make sure the standard bar's segment selector is in sync
305 set_segment_display_mode(segment_display_mode_);
308 Session& View::session()
313 const Session& View::session() const
318 unordered_set< shared_ptr<Signal> > View::signals() const
323 shared_ptr<Signal> View::get_signal_by_signalbase(shared_ptr<data::SignalBase> base) const
325 shared_ptr<Signal> ret_val;
327 for (const shared_ptr<Signal>& s : signals_)
328 if (s->base() == base) {
336 void View::clear_signals()
338 ViewBase::clear_signals();
342 void View::add_signal(const shared_ptr<Signal> signal)
344 ViewBase::add_signalbase(signal->base());
345 signals_.insert(signal);
347 signal->set_segment_display_mode(segment_display_mode_);
348 signal->set_current_segment(current_segment_);
350 connect(signal->base().get(), SIGNAL(name_changed(const QString&)),
351 this, SLOT(on_signal_name_changed()));
355 void View::clear_decode_signals()
357 ViewBase::clear_decode_signals();
358 decode_traces_.clear();
361 void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
363 ViewBase::add_decode_signal(signal);
365 shared_ptr<DecodeTrace> d(
366 new DecodeTrace(session_, signal, decode_traces_.size()));
367 decode_traces_.push_back(d);
369 d->set_segment_display_mode(segment_display_mode_);
370 d->set_current_segment(current_segment_);
372 connect(signal.get(), SIGNAL(name_changed(const QString&)),
373 this, SLOT(on_signal_name_changed()));
376 void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
378 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
379 if ((*i)->base() == signal) {
380 decode_traces_.erase(i);
385 ViewBase::remove_decode_signal(signal);
389 shared_ptr<Signal> View::get_signal_under_mouse_cursor() const
391 return signal_under_mouse_cursor_;
399 const View* View::view() const
404 Viewport* View::viewport()
409 const Viewport* View::viewport() const
414 QAbstractScrollArea* View::scrollarea() const
419 const Ruler* View::ruler() const
424 void View::save_settings(QSettings &settings) const
426 settings.setValue("scale", scale_);
427 settings.setValue("v_offset",
428 scrollarea_->verticalScrollBar()->sliderPosition());
430 settings.setValue("splitter_state", splitter_->saveState());
431 settings.setValue("segment_display_mode", segment_display_mode_);
433 GlobalSettings::store_timestamp(settings, "offset", offset_);
435 if (custom_zero_offset_set_)
436 GlobalSettings::store_timestamp(settings, "zero_offset", -zero_offset_);
438 settings.remove("zero_offset");
440 for (const shared_ptr<Signal>& signal : signals_) {
441 settings.beginGroup(signal->base()->internal_name());
442 signal->save_settings(settings);
447 void View::restore_settings(QSettings &settings)
449 // Note: It is assumed that this function is only called once,
450 // immediately after restoring a previous session.
452 if (settings.contains("scale"))
453 set_scale(settings.value("scale").toDouble());
455 if (settings.contains("offset")) {
456 // This also updates ruler_offset_
457 set_offset(GlobalSettings::restore_timestamp(settings, "offset"));
460 if (settings.contains("zero_offset"))
461 set_zero_position(GlobalSettings::restore_timestamp(settings, "zero_offset"));
463 if (settings.contains("splitter_state"))
464 splitter_->restoreState(settings.value("splitter_state").toByteArray());
466 if (settings.contains("segment_display_mode"))
467 set_segment_display_mode(
468 (Trace::SegmentDisplayMode)(settings.value("segment_display_mode").toInt()));
470 for (shared_ptr<Signal> signal : signals_) {
471 settings.beginGroup(signal->base()->internal_name());
472 signal->restore_settings(settings);
476 if (settings.contains("v_offset")) {
477 saved_v_offset_ = settings.value("v_offset").toInt();
478 set_v_offset(saved_v_offset_);
479 scroll_needs_defaults_ = false;
480 // Note: see eventFilter() for additional information
483 settings_restored_ = true;
484 suppress_zoom_to_fit_after_acq_ = true;
486 // Update the ruler so that it uses the new scale
487 calculate_tick_spacing();
490 vector< shared_ptr<TimeItem> > View::time_items() const
492 const vector<shared_ptr<Flag>> f(flags());
493 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
496 items.push_back(cursors_);
497 items.push_back(cursors_->first());
498 items.push_back(cursors_->second());
501 for (auto& trigger_marker : trigger_markers_)
502 items.push_back(trigger_marker);
507 double View::scale() const
512 void View::set_scale(double scale)
514 if (scale_ != scale) {
520 void View::set_offset(const pv::util::Timestamp& offset, bool force_update)
522 if ((offset_ != offset) || force_update) {
524 ruler_offset_ = offset_ + zero_offset_;
529 const Timestamp& View::offset() const
534 const Timestamp& View::ruler_offset() const
536 return ruler_offset_;
539 void View::set_zero_position(const pv::util::Timestamp& position)
541 zero_offset_ = -position;
542 custom_zero_offset_set_ = true;
544 // Force an immediate update of the offsets
545 set_offset(offset_, true);
549 void View::reset_zero_position()
553 // When enabled, the first trigger for this segment is used as the zero position
554 GlobalSettings settings;
555 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
557 if (trigger_is_zero_time) {
558 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
560 if (triggers.size() > 0)
561 zero_offset_ = triggers.front();
564 custom_zero_offset_set_ = false;
566 // Force an immediate update of the offsets
567 set_offset(offset_, true);
571 pv::util::Timestamp View::zero_offset() const
576 int View::owner_visual_v_offset() const
578 return -scrollarea_->verticalScrollBar()->sliderPosition();
581 void View::set_v_offset(int offset)
583 scrollarea_->verticalScrollBar()->setSliderPosition(offset);
588 void View::set_h_offset(int offset)
590 scrollarea_->horizontalScrollBar()->setSliderPosition(offset);
595 int View::get_h_scrollbar_maximum() const
597 return scrollarea_->horizontalScrollBar()->maximum();
600 unsigned int View::depth() const
605 uint32_t View::current_segment() const
607 return current_segment_;
610 pv::util::SIPrefix View::tick_prefix() const
615 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
617 if (tick_prefix_ != tick_prefix) {
618 tick_prefix_ = tick_prefix;
619 tick_prefix_changed();
623 unsigned int View::tick_precision() const
625 return tick_precision_;
628 void View::set_tick_precision(unsigned tick_precision)
630 if (tick_precision_ != tick_precision) {
631 tick_precision_ = tick_precision;
632 tick_precision_changed();
636 const pv::util::Timestamp& View::tick_period() const
641 unsigned int View::minor_tick_count() const
643 return minor_tick_count_;
646 void View::set_tick_period(const pv::util::Timestamp& tick_period)
648 if (tick_period_ != tick_period) {
649 tick_period_ = tick_period;
650 tick_period_changed();
654 TimeUnit View::time_unit() const
659 void View::set_time_unit(pv::util::TimeUnit time_unit)
661 if (time_unit_ != time_unit) {
662 time_unit_ = time_unit;
667 void View::set_current_segment(uint32_t segment_id)
669 current_segment_ = segment_id;
671 for (const shared_ptr<Signal>& signal : signals_)
672 signal->set_current_segment(current_segment_);
674 for (shared_ptr<DecodeTrace>& dt : decode_traces_)
675 dt->set_current_segment(current_segment_);
678 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
680 trigger_markers_.clear();
681 for (util::Timestamp timestamp : triggers)
682 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, timestamp));
684 if (!custom_zero_offset_set_)
685 reset_zero_position();
689 segment_changed(segment_id);
692 bool View::segment_is_selectable() const
694 return segment_selectable_;
697 Trace::SegmentDisplayMode View::segment_display_mode() const
699 return segment_display_mode_;
702 void View::set_segment_display_mode(Trace::SegmentDisplayMode mode)
704 segment_display_mode_ = mode;
706 for (const shared_ptr<Signal>& signal : signals_)
707 signal->set_segment_display_mode(mode);
709 uint32_t last_segment = session_.get_segment_count() - 1;
712 case Trace::ShowLastSegmentOnly:
713 if (current_segment_ != last_segment)
714 set_current_segment(last_segment);
717 case Trace::ShowLastCompleteSegmentOnly:
718 // Do nothing if we only have one segment so far
719 if (last_segment > 0) {
720 // If the last segment isn't complete, the previous one must be
721 uint32_t segment_id =
722 (session_.all_segments_complete(last_segment)) ?
723 last_segment : last_segment - 1;
725 if (current_segment_ != segment_id)
726 set_current_segment(segment_id);
730 case Trace::ShowSingleSegmentOnly:
731 case Trace::ShowAllSegments:
732 case Trace::ShowAccumulatedIntensity:
734 // Current segment remains as-is
738 segment_selectable_ = true;
740 if ((mode == Trace::ShowAllSegments) || (mode == Trace::ShowAccumulatedIntensity))
741 segment_selectable_ = false;
745 segment_display_mode_changed((int)mode, segment_selectable_);
748 void View::zoom(double steps)
750 zoom(steps, viewport_->width() / 2);
753 void View::zoom(double steps, int offset)
755 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
758 void View::zoom_fit(bool gui_state)
760 // Act as one-shot when stopped, toggle along with the GUI otherwise
761 if (session_.get_capture_state() == Session::Stopped) {
762 always_zoom_to_fit_ = false;
763 always_zoom_to_fit_changed(false);
765 always_zoom_to_fit_ = gui_state;
766 always_zoom_to_fit_changed(gui_state);
769 const pair<Timestamp, Timestamp> extents = get_time_extents();
770 const Timestamp delta = extents.second - extents.first;
771 if (delta < Timestamp("1e-12"))
775 const int w = viewport_->width();
779 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
780 set_scale_offset(scale.convert_to<double>(), extents.first);
783 void View::set_scale_offset(double scale, const Timestamp& offset)
785 // Disable sticky scrolling / always zoom to fit when acquisition runs
786 // and user drags the viewport
787 if ((scale_ == scale) && (offset_ != offset) &&
788 (session_.get_capture_state() == Session::Running)) {
790 if (sticky_scrolling_) {
791 sticky_scrolling_ = false;
792 sticky_scrolling_changed(false);
795 if (always_zoom_to_fit_) {
796 always_zoom_to_fit_ = false;
797 always_zoom_to_fit_changed(false);
804 calculate_tick_spacing();
811 set< shared_ptr<SignalData> > View::get_visible_data() const
813 // Make a set of all the visible data objects
814 set< shared_ptr<SignalData> > visible_data;
815 for (const shared_ptr<Signal>& sig : signals_)
817 visible_data.insert(sig->data());
822 pair<Timestamp, Timestamp> View::get_time_extents() const
824 boost::optional<Timestamp> left_time, right_time;
825 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
826 for (const shared_ptr<SignalData>& d : visible_data) {
827 const vector< shared_ptr<Segment> > segments = d->segments();
828 for (const shared_ptr<Segment>& s : segments) {
829 double samplerate = s->samplerate();
830 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
832 const Timestamp start_time = s->start_time();
833 left_time = left_time ?
834 min(*left_time, start_time) :
836 right_time = right_time ?
837 max(*right_time, start_time + d->max_sample_count() / samplerate) :
838 start_time + d->max_sample_count() / samplerate;
842 if (!left_time || !right_time)
843 return make_pair(0, 0);
845 assert(*left_time < *right_time);
846 return make_pair(*left_time, *right_time);
849 bool View::colored_bg() const
854 bool View::cursors_shown() const
856 return show_cursors_;
859 void View::show_cursors(bool show)
861 if (show_cursors_ != show) {
862 show_cursors_ = show;
864 cursor_state_changed(show);
870 void View::set_cursors(pv::util::Timestamp& first, pv::util::Timestamp& second)
874 cursors_->first()->set_time(first);
875 cursors_->second()->set_time(second);
881 void View::center_cursors()
885 const double time_width = scale_ * viewport_->width();
886 cursors_->first()->set_time(offset_ + time_width * 0.4);
887 cursors_->second()->set_time(offset_ + time_width * 0.6);
893 shared_ptr<CursorPair> View::cursors() const
898 shared_ptr<Flag> View::add_flag(const Timestamp& time)
900 shared_ptr<Flag> flag =
901 make_shared<Flag>(*this, time, QString("%1").arg(next_flag_text_));
902 flags_.push_back(flag);
904 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
905 (next_flag_text_ + 1);
907 time_item_appearance_changed(true, true);
911 void View::remove_flag(shared_ptr<Flag> flag)
914 time_item_appearance_changed(true, true);
917 vector< shared_ptr<Flag> > View::flags() const
919 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
920 stable_sort(flags.begin(), flags.end(),
921 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
922 return a->time() < b->time();
928 const QPoint& View::hover_point() const
933 const QWidget* View::hover_widget() const
935 return hover_widget_;
938 int64_t View::get_nearest_level_change(const QPoint &p)
940 // Is snapping disabled?
941 if (snap_distance_ == 0)
945 entry_t(shared_ptr<Signal> s) :
946 signal(s), delta(numeric_limits<int64_t>::max()), sample(-1), is_dense(false) {}
947 shared_ptr<Signal> signal;
953 vector<entry_t> list;
955 // Create list of signals to consider
956 if (signal_under_mouse_cursor_)
957 list.emplace_back(signal_under_mouse_cursor_);
959 for (shared_ptr<Signal> s : signals_) {
963 list.emplace_back(s);
966 // Get data for listed signals
967 for (entry_t &e : list) {
968 // Calculate sample number from cursor position
969 const double samples_per_pixel = e.signal->base()->get_samplerate() * scale();
970 const int64_t x_offset = offset().convert_to<double>() / scale();
971 const int64_t sample_num = max(((x_offset + p.x()) * samples_per_pixel), 0.0);
973 vector<data::LogicSegment::EdgePair> edges =
974 e.signal->get_nearest_level_changes(sample_num);
980 const int64_t first_sample_delta = abs(sample_num - edges.front().first);
981 const int64_t first_delta = first_sample_delta / samples_per_pixel;
982 e.delta = first_delta;
983 e.sample = edges.front().first;
985 // Check second edge if available
986 if (edges.size() == 2) {
987 // Note: -1 because this is usually the right edge and sample points are left-aligned
988 const int64_t second_sample_delta = abs(sample_num - edges.back().first - 1);
989 const int64_t second_delta = second_sample_delta / samples_per_pixel;
991 // If both edges are too close, we mark this signal as being dense
992 if ((first_delta + second_delta) <= snap_distance_)
995 if (second_delta < first_delta) {
996 e.delta = second_delta;
997 e.sample = edges.back().first;
1002 // Look for the best match: non-dense first, then dense
1003 entry_t *match = nullptr;
1005 for (entry_t &e : list) {
1006 if (e.delta > snap_distance_ || e.is_dense)
1010 if (e.delta < match->delta)
1017 for (entry_t &e : list) {
1022 if (e.delta < match->delta)
1030 // Somewhat ugly hack to make TimeItem::drag_by() work
1031 signal_under_mouse_cursor_ = match->signal;
1033 return match->sample;
1039 void View::restack_all_trace_tree_items()
1041 // Make a list of owners that is sorted from deepest first
1042 const vector<shared_ptr<TraceTreeItem>> items(
1043 list_by_type<TraceTreeItem>());
1044 set< TraceTreeItemOwner* > owners;
1045 for (const auto &r : items)
1046 owners.insert(r->owner());
1047 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
1048 sort(sorted_owners.begin(), sorted_owners.end(),
1049 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
1050 return a->depth() > b->depth(); });
1052 // Restack the items recursively
1053 for (auto &o : sorted_owners)
1056 // Animate the items to their destination
1057 for (const auto &i : items)
1058 i->animate_to_layout_v_offset();
1061 int View::header_width() const
1063 return header_->extended_size_hint().width();
1066 void View::on_setting_changed(const QString &key, const QVariant &value)
1068 GlobalSettings settings;
1070 if (key == GlobalSettings::Key_View_ColoredBG) {
1071 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
1072 viewport_->update();
1075 if ((key == GlobalSettings::Key_View_ShowSamplingPoints) ||
1076 (key == GlobalSettings::Key_View_ShowAnalogMinorGrid))
1077 viewport_->update();
1079 if (key == GlobalSettings::Key_View_TriggerIsZeroTime)
1080 on_settingViewTriggerIsZeroTime_changed(value);
1082 if (key == GlobalSettings::Key_View_SnapDistance)
1083 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
1086 void View::trigger_event(int segment_id, util::Timestamp location)
1088 // TODO This doesn't work if we're showing multiple segments at once
1089 if ((uint32_t)segment_id != current_segment_)
1092 if (!custom_zero_offset_set_)
1093 reset_zero_position();
1095 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
1098 void View::get_scroll_layout(double &length, Timestamp &offset) const
1100 const pair<Timestamp, Timestamp> extents = get_time_extents();
1101 length = ((extents.second - extents.first) / scale_).convert_to<double>();
1102 offset = offset_ / scale_;
1105 void View::set_zoom(double scale, int offset)
1107 // Reset the "always zoom to fit" feature as the user changed the zoom
1108 always_zoom_to_fit_ = false;
1109 always_zoom_to_fit_changed(false);
1111 const Timestamp cursor_offset = offset_ + scale_ * offset;
1112 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
1113 const Timestamp new_offset = cursor_offset - new_scale * offset;
1114 set_scale_offset(new_scale.convert_to<double>(), new_offset);
1117 void View::calculate_tick_spacing()
1119 const double SpacingIncrement = 10.0f;
1120 const double MinValueSpacing = 40.0f;
1122 // Figure out the highest numeric value visible on a label
1123 const QSize areaSize = viewport_->size();
1124 const Timestamp max_time = max(fabs(offset_),
1125 fabs(offset_ + scale_ * areaSize.width()));
1127 double min_width = SpacingIncrement;
1128 double label_width, tick_period_width;
1130 QFontMetrics m(QApplication::font());
1132 // Copies of the member variables with the same name, used in the calculation
1133 // and written back afterwards, so that we don't emit signals all the time
1134 // during the calculation.
1135 pv::util::Timestamp tick_period = tick_period_;
1136 pv::util::SIPrefix tick_prefix = tick_prefix_;
1137 unsigned tick_precision = tick_precision_;
1140 const double min_period = scale_ * min_width;
1142 const int order = (int)floorf(log10f(min_period));
1143 const pv::util::Timestamp order_decimal =
1144 pow(pv::util::Timestamp(10), order);
1146 // Allow for a margin of error so that a scale unit of 1 can be used.
1147 // Otherwise, for a SU of 1 the tick period will almost always be below
1148 // the min_period by a small amount - and thus skipped in favor of 2.
1149 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
1150 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
1151 double tp_with_margin;
1152 unsigned int unit = 0;
1155 tp_with_margin = order_decimal.convert_to<double>() *
1156 (ScaleUnits[unit++] + tp_margin);
1157 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
1159 minor_tick_count_ = (unit == 2) ? 4 : 5;
1160 tick_period = order_decimal * ScaleUnits[unit - 1];
1161 tick_prefix = static_cast<pv::util::SIPrefix>(
1162 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
1164 // Precision is the number of fractional digits required, not
1165 // taking the prefix into account (and it must never be negative)
1166 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
1168 tick_period_width = (tick_period / scale_).convert_to<double>();
1170 const QString label_text = Ruler::format_time_with_distance(
1171 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
1173 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
1174 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
1177 min_width += SpacingIncrement;
1178 } while (tick_period_width < label_width);
1180 set_tick_period(tick_period);
1181 set_tick_prefix(tick_prefix);
1182 set_tick_precision(tick_precision);
1185 void View::adjust_top_margin()
1189 const QSize areaSize = viewport_->size();
1191 const pair<int, int> extents = v_extents();
1192 const int top_margin = owner_visual_v_offset() + extents.first;
1193 const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second;
1195 // Do we have empty space at the top while the last trace goes out of screen?
1196 if ((top_margin > 0) && (trace_bottom > areaSize.height())) {
1197 const int trace_height = extents.second - extents.first;
1199 // Center everything vertically if there is enough space
1200 if (areaSize.height() >= trace_height)
1201 set_v_offset(extents.first -
1202 ((areaSize.height() - trace_height) / 2));
1204 // Remove the top margin to make as many traces fit on screen as possible
1205 set_v_offset(extents.first);
1209 void View::update_scroll()
1212 QScrollBar *hscrollbar = scrollarea_->horizontalScrollBar();
1213 QScrollBar *vscrollbar = scrollarea_->verticalScrollBar();
1215 const QSize areaSize = viewport_->size();
1217 // Set the horizontal scroll bar
1220 get_scroll_layout(length, offset);
1221 length = max(length - areaSize.width(), 0.0);
1223 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
1225 hscrollbar->setPageStep(areaSize.width() / 2);
1226 hscrollbar->setSingleStep(major_tick_distance);
1228 updating_scroll_ = true;
1230 if (length < MaxScrollValue) {
1231 hscrollbar->setRange(0, length);
1232 hscrollbar->setSliderPosition(offset.convert_to<double>());
1234 hscrollbar->setRange(0, MaxScrollValue);
1235 hscrollbar->setSliderPosition(
1236 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
1239 updating_scroll_ = false;
1241 // Set the vertical scrollbar
1242 vscrollbar->setPageStep(areaSize.height());
1243 vscrollbar->setSingleStep(areaSize.height() / 8);
1245 const pair<int, int> extents = v_extents();
1247 // Don't change the scrollbar range if there are no traces
1248 if (extents.first != extents.second)
1249 vscrollbar->setRange(extents.first - areaSize.height(),
1252 if (scroll_needs_defaults_) {
1253 set_scroll_default();
1254 scroll_needs_defaults_ = false;
1258 void View::reset_scroll()
1260 scrollarea_->verticalScrollBar()->setRange(0, 0);
1263 void View::set_scroll_default()
1267 const QSize areaSize = viewport_->size();
1269 const pair<int, int> extents = v_extents();
1270 const int trace_height = extents.second - extents.first;
1272 // Do all traces fit in the view?
1273 if (areaSize.height() >= trace_height)
1274 // Center all traces vertically
1275 set_v_offset(extents.first -
1276 ((areaSize.height() - trace_height) / 2));
1278 // Put the first trace at the top, letting the bottom ones overflow
1279 set_v_offset(extents.first);
1282 void View::determine_if_header_was_shrunk()
1284 const int header_pane_width =
1285 splitter_->sizes().front(); // clazy:exclude=detaching-temporary
1287 // Allow for a slight margin of error so that we also accept
1288 // slight differences when e.g. a label name change increased
1289 // the overall width
1290 header_was_shrunk_ = (header_pane_width < (header_width() - 10));
1293 void View::resize_header_to_fit()
1295 // Setting the maximum width of the header widget doesn't work as
1296 // expected because the splitter would allow the user to make the
1297 // pane wider than that, creating empty space as a result.
1298 // To make this work, we stricly enforce the maximum width by
1299 // expanding the header unless the user shrunk it on purpose.
1300 // As we're then setting the width of the header pane, we set the
1301 // splitter to the maximum allowed position.
1303 int splitter_area_width = 0;
1304 for (int w : splitter_->sizes()) // clazy:exclude=range-loop
1305 splitter_area_width += w;
1307 // Make sure the header has enough horizontal space to show all labels fully
1308 QList<int> pane_sizes;
1309 pane_sizes.push_back(header_->extended_size_hint().width());
1310 pane_sizes.push_back(splitter_area_width - header_->extended_size_hint().width());
1311 splitter_->setSizes(pane_sizes);
1314 void View::update_layout()
1319 TraceTreeItemOwner* View::find_prevalent_trace_group(
1320 const shared_ptr<sigrok::ChannelGroup> &group,
1321 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1326 unordered_set<TraceTreeItemOwner*> owners;
1327 vector<TraceTreeItemOwner*> owner_list;
1329 // Make a set and a list of all the owners
1330 for (const auto& channel : group->channels()) {
1331 for (auto& entry : signal_map) {
1332 if (entry.first->channel() == channel) {
1333 TraceTreeItemOwner *const o = (entry.second)->owner();
1334 owner_list.push_back(o);
1340 // Iterate through the list of owners, and find the most prevalent
1341 size_t max_prevalence = 0;
1342 TraceTreeItemOwner *prevalent_owner = nullptr;
1343 for (TraceTreeItemOwner *owner : owners) {
1344 const size_t prevalence = count_if(
1345 owner_list.begin(), owner_list.end(),
1346 [&](TraceTreeItemOwner *o) { return o == owner; });
1347 if (prevalence > max_prevalence) {
1348 max_prevalence = prevalence;
1349 prevalent_owner = owner;
1353 return prevalent_owner;
1356 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
1357 const vector< shared_ptr<sigrok::Channel> > &channels,
1358 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1360 set< shared_ptr<Trace> > &add_list)
1362 vector< shared_ptr<Trace> > filtered_traces;
1364 for (const auto& channel : channels) {
1365 for (auto& entry : signal_map) {
1366 if (entry.first->channel() == channel) {
1367 shared_ptr<Trace> trace = entry.second;
1368 const auto list_iter = add_list.find(trace);
1369 if (list_iter == add_list.end())
1372 filtered_traces.push_back(trace);
1373 add_list.erase(list_iter);
1378 return filtered_traces;
1381 void View::determine_time_unit()
1383 // Check whether we know the sample rate and hence can use time as the unit
1384 if (time_unit_ == util::TimeUnit::Samples) {
1385 // Check all signals but...
1386 for (const shared_ptr<Signal>& signal : signals_) {
1387 const shared_ptr<SignalData> data = signal->data();
1389 // ...only check first segment of each
1390 const vector< shared_ptr<Segment> > segments = data->segments();
1391 if (!segments.empty())
1392 if (segments[0]->samplerate()) {
1393 set_time_unit(util::TimeUnit::Time);
1400 bool View::eventFilter(QObject *object, QEvent *event)
1402 const QEvent::Type type = event->type();
1404 if (type == QEvent::MouseMove) {
1407 hover_widget_ = qobject_cast<QWidget*>(object);
1409 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1410 if (object == viewport_)
1411 hover_point_ = mouse_event->pos();
1412 else if (object == ruler_)
1413 hover_point_ = mouse_event->pos();
1414 else if (object == header_)
1415 hover_point_ = QPoint(0, mouse_event->y());
1417 hover_point_ = QPoint(-1, -1);
1419 update_hover_point();
1421 if (grabbed_widget_) {
1422 int64_t nearest = get_nearest_level_change(hover_point_);
1423 pv::util::Timestamp mouse_time = offset_ + hover_point_.x() * scale_;
1425 if (nearest == -1) {
1426 grabbed_widget_->set_time(mouse_time);
1428 grabbed_widget_->set_time(nearest / get_signal_under_mouse_cursor()->base()->get_samplerate());
1432 } else if (type == QEvent::MouseButtonPress) {
1433 grabbed_widget_ = nullptr;
1435 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1436 if ((object == viewport_) && (mouse_event->button() & Qt::LeftButton)) {
1437 // Send event to all trace tree items
1438 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1439 list_by_type<TraceTreeItem>());
1440 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1441 r->mouse_left_press_event(mouse_event);
1443 } else if (type == QEvent::Leave) {
1444 hover_point_ = QPoint(-1, -1);
1445 update_hover_point();
1446 } else if (type == QEvent::Show) {
1448 // This is somewhat of a hack, unfortunately. We cannot use
1449 // set_v_offset() from within restore_settings() as the view
1450 // at that point is neither visible nor properly sized.
1451 // This is the least intrusive workaround I could come up
1452 // with: set the vertical offset (or scroll defaults) when
1453 // the view is shown, which happens after all widgets were
1454 // resized to their final sizes.
1457 if (settings_restored_)
1458 determine_if_header_was_shrunk();
1460 resize_header_to_fit();
1462 if (scroll_needs_defaults_) {
1463 set_scroll_default();
1464 scroll_needs_defaults_ = false;
1467 if (saved_v_offset_) {
1468 set_v_offset(saved_v_offset_);
1469 saved_v_offset_ = 0;
1473 return QObject::eventFilter(object, event);
1476 void View::contextMenuEvent(QContextMenuEvent *event)
1478 QPoint pos = event->pos() - QPoint(0, ruler_->sizeHint().height());
1480 const shared_ptr<ViewItem> r = viewport_->get_mouse_over_item(pos);
1484 QMenu *menu = r->create_view_context_menu(this, pos);
1486 menu->popup(event->globalPos());
1489 void View::resizeEvent(QResizeEvent* event)
1491 // Only adjust the top margin if we shrunk vertically
1492 if (event->size().height() < event->oldSize().height())
1493 adjust_top_margin();
1498 void View::update_hover_point()
1500 // Determine signal that the mouse cursor is hovering over
1501 signal_under_mouse_cursor_.reset();
1502 if (hover_widget_ == this) {
1503 for (const shared_ptr<Signal>& s : signals_) {
1504 const pair<int, int> extents = s->v_extents();
1505 const int top = s->get_visual_y() + extents.first;
1506 const int btm = s->get_visual_y() + extents.second;
1507 if ((hover_point_.y() >= top) && (hover_point_.y() <= btm)
1508 && s->base()->enabled())
1509 signal_under_mouse_cursor_ = s;
1513 // Update all trace tree items
1514 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1515 list_by_type<TraceTreeItem>());
1516 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1517 r->hover_point_changed(hover_point_);
1519 // Notify any other listeners
1520 hover_point_changed(hover_widget_, hover_point_);
1523 void View::row_item_appearance_changed(bool label, bool content)
1528 viewport_->update();
1531 void View::time_item_appearance_changed(bool label, bool content)
1536 // Make sure the header pane width is updated, too
1541 viewport_->update();
1544 void View::extents_changed(bool horz, bool vert)
1547 (horz ? TraceTreeItemHExtentsChanged : 0) |
1548 (vert ? TraceTreeItemVExtentsChanged : 0);
1550 lazy_event_handler_.stop();
1551 lazy_event_handler_.start();
1554 void View::on_signal_name_changed()
1556 if (!header_was_shrunk_)
1557 resize_header_to_fit();
1560 void View::on_splitter_moved()
1562 // The header can only shrink when the splitter is moved manually
1563 determine_if_header_was_shrunk();
1565 if (!header_was_shrunk_)
1566 resize_header_to_fit();
1569 void View::on_zoom_in_shortcut_triggered()
1574 void View::on_zoom_out_shortcut_triggered()
1579 void View::on_scroll_to_start_shortcut_triggered()
1584 void View::on_scroll_to_end_shortcut_triggered()
1586 set_h_offset(get_h_scrollbar_maximum());
1589 void View::h_scroll_value_changed(int value)
1591 if (updating_scroll_)
1594 // Disable sticky scrolling when user moves the horizontal scroll bar
1595 // during a running acquisition
1596 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1597 sticky_scrolling_ = false;
1598 sticky_scrolling_changed(false);
1601 const int range = scrollarea_->horizontalScrollBar()->maximum();
1602 if (range < MaxScrollValue)
1603 set_offset(scale_ * value);
1607 get_scroll_layout(length, offset);
1608 set_offset(scale_ * length * value / MaxScrollValue);
1612 viewport_->update();
1615 void View::v_scroll_value_changed()
1618 viewport_->update();
1621 void View::on_grab_ruler(int ruler_id)
1623 if (!cursors_shown()) {
1628 // Release the grabbed widget if its trigger hotkey was pressed twice
1630 grabbed_widget_ = (grabbed_widget_ == cursors_->first().get()) ?
1631 nullptr : cursors_->first().get();
1633 grabbed_widget_ = (grabbed_widget_ == cursors_->second().get()) ?
1634 nullptr : cursors_->second().get();
1636 if (grabbed_widget_)
1637 grabbed_widget_->set_time(ruler_->get_absolute_time_from_x_pos(
1638 mapFromGlobal(QCursor::pos()).x() - header_width()));
1641 void View::signals_changed()
1643 using sigrok::Channel;
1645 vector< shared_ptr<Channel> > channels;
1646 shared_ptr<sigrok::Device> sr_dev;
1647 bool signals_added_or_removed = false;
1649 // Do we need to set the vertical scrollbar to its default position later?
1650 // We do if there are no traces, i.e. the scroll bar has no range set
1651 bool reset_scrollbar =
1652 (scrollarea_->verticalScrollBar()->minimum() ==
1653 scrollarea_->verticalScrollBar()->maximum());
1655 if (!session_.device()) {
1659 sr_dev = session_.device()->device();
1661 channels = sr_dev->channels();
1664 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1666 // Make a list of traces that are being added, and a list of traces
1667 // that are being removed
1668 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1669 const set<shared_ptr<Trace>> prev_traces(
1670 prev_trace_list.begin(), prev_trace_list.end());
1672 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1674 #ifdef ENABLE_DECODE
1675 traces.insert(decode_traces_.begin(), decode_traces_.end());
1678 set< shared_ptr<Trace> > add_traces;
1679 set_difference(traces.begin(), traces.end(),
1680 prev_traces.begin(), prev_traces.end(),
1681 inserter(add_traces, add_traces.begin()));
1683 set< shared_ptr<Trace> > remove_traces;
1684 set_difference(prev_traces.begin(), prev_traces.end(),
1685 traces.begin(), traces.end(),
1686 inserter(remove_traces, remove_traces.begin()));
1688 // Make a look-up table of sigrok Channels to pulseview Signals
1689 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1691 for (const shared_ptr<Signal>& sig : signals_)
1692 signal_map[sig->base()] = sig;
1694 // Populate channel groups
1696 for (auto& entry : sr_dev->channel_groups()) {
1697 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1699 if (group->channels().size() <= 1)
1702 // Find best trace group to add to
1703 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1706 // If there is no trace group, create one
1707 shared_ptr<TraceGroup> new_trace_group;
1709 new_trace_group.reset(new TraceGroup());
1710 owner = new_trace_group.get();
1713 // Extract traces for the trace group, removing them from
1715 const vector< shared_ptr<Trace> > new_traces_in_group =
1716 extract_new_traces_for_channels(group->channels(),
1717 signal_map, add_traces);
1719 // Add the traces to the group
1720 const pair<int, int> prev_v_extents = owner->v_extents();
1721 int offset = prev_v_extents.second - prev_v_extents.first;
1722 for (const shared_ptr<Trace>& trace : new_traces_in_group) {
1724 owner->add_child_item(trace);
1726 const pair<int, int> extents = trace->v_extents();
1727 if (trace->enabled())
1728 offset += -extents.first;
1729 trace->force_to_v_offset(offset);
1730 if (trace->enabled())
1731 offset += extents.second;
1734 if (new_trace_group) {
1735 // Assign proper vertical offsets to each channel in the group
1736 new_trace_group->restack_items();
1738 // If this is a new group, enqueue it in the new top level
1740 if (!new_traces_in_group.empty())
1741 new_top_level_items.push_back(new_trace_group);
1745 // Enqueue the remaining logic channels in a group
1746 vector< shared_ptr<Channel> > logic_channels;
1747 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1748 [](const shared_ptr<Channel>& c) {
1749 return c->type() == sigrok::ChannelType::LOGIC; });
1751 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1752 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1754 if (non_grouped_logic_signals.size() > 0) {
1755 const shared_ptr<TraceGroup> non_grouped_trace_group(
1756 make_shared<TraceGroup>());
1757 for (const shared_ptr<Trace>& trace : non_grouped_logic_signals)
1758 non_grouped_trace_group->add_child_item(trace);
1760 non_grouped_trace_group->restack_items();
1761 new_top_level_items.push_back(non_grouped_trace_group);
1764 // Enqueue the remaining channels as free ungrouped traces
1765 const vector< shared_ptr<Trace> > new_top_level_signals =
1766 extract_new_traces_for_channels(channels, signal_map, add_traces);
1767 new_top_level_items.insert(new_top_level_items.end(),
1768 new_top_level_signals.begin(), new_top_level_signals.end());
1770 // Enqueue any remaining traces i.e. decode traces
1771 new_top_level_items.insert(new_top_level_items.end(),
1772 add_traces.begin(), add_traces.end());
1774 // Remove any removed traces
1775 for (const shared_ptr<Trace>& trace : remove_traces) {
1776 TraceTreeItemOwner *const owner = trace->owner();
1778 owner->remove_child_item(trace);
1779 signals_added_or_removed = true;
1782 // Remove any empty trace groups
1783 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1784 if (group->child_items().size() == 0) {
1785 remove_child_item(group);
1789 // Add and position the pending top levels items
1790 int offset = v_extents().second;
1791 for (auto item : new_top_level_items) {
1792 add_child_item(item);
1794 // Position the item after the last item or at the top if there is none
1795 const pair<int, int> extents = item->v_extents();
1797 if (item->enabled())
1798 offset += -extents.first;
1800 item->force_to_v_offset(offset);
1802 if (item->enabled())
1803 offset += extents.second;
1804 signals_added_or_removed = true;
1808 if (signals_added_or_removed && !header_was_shrunk_)
1809 resize_header_to_fit();
1814 viewport_->update();
1816 if (reset_scrollbar)
1817 set_scroll_default();
1820 void View::capture_state_updated(int state)
1822 GlobalSettings settings;
1824 if (state == Session::Running) {
1825 set_time_unit(util::TimeUnit::Samples);
1827 trigger_markers_.clear();
1828 if (!custom_zero_offset_set_)
1829 set_zero_position(0);
1831 scale_at_acq_start_ = scale_;
1832 offset_at_acq_start_ = offset_;
1834 // Activate "always zoom to fit" if the setting is enabled and we're
1835 // the main view of this session (other trace views may be used for
1836 // zooming and we don't want to mess them up)
1837 bool state = settings.value(GlobalSettings::Key_View_ZoomToFitDuringAcq).toBool();
1838 if (is_main_view_ && state) {
1839 always_zoom_to_fit_ = true;
1840 always_zoom_to_fit_changed(always_zoom_to_fit_);
1843 // Enable sticky scrolling if the setting is enabled
1844 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
1846 // Reset all traces to segment 0
1847 current_segment_ = 0;
1848 set_current_segment(current_segment_);
1851 if (state == Session::Stopped) {
1852 // After acquisition has stopped we need to re-calculate the ticks once
1853 // as it's otherwise done when the user pans or zooms, which is too late
1854 calculate_tick_spacing();
1856 // Reset "always zoom to fit", the acquisition has stopped
1857 if (always_zoom_to_fit_) {
1858 // Perform a final zoom-to-fit before disabling
1859 zoom_fit(always_zoom_to_fit_);
1860 always_zoom_to_fit_ = false;
1861 always_zoom_to_fit_changed(always_zoom_to_fit_);
1864 bool zoom_to_fit_after_acq =
1865 settings.value(GlobalSettings::Key_View_ZoomToFitAfterAcq).toBool();
1867 // Only perform zoom-to-fit if the user hasn't altered the viewport and
1868 // we didn't restore settings in the meanwhile
1869 if (zoom_to_fit_after_acq &&
1870 !suppress_zoom_to_fit_after_acq_ &&
1871 (scale_ == scale_at_acq_start_) &&
1872 (offset_ == offset_at_acq_start_))
1873 zoom_fit(false); // We're stopped, so the GUI state doesn't matter
1875 suppress_zoom_to_fit_after_acq_ = false;
1879 void View::on_new_segment(int new_segment_id)
1881 on_segment_changed(new_segment_id);
1884 void View::on_segment_completed(int segment_id)
1886 on_segment_changed(segment_id);
1889 void View::on_segment_changed(int segment)
1891 switch (segment_display_mode_) {
1892 case Trace::ShowLastSegmentOnly:
1893 case Trace::ShowSingleSegmentOnly:
1894 set_current_segment(segment);
1897 case Trace::ShowLastCompleteSegmentOnly:
1898 // Only update if all segments are complete
1899 if (session_.all_segments_complete(segment))
1900 set_current_segment(segment);
1903 case Trace::ShowAllSegments:
1904 case Trace::ShowAccumulatedIntensity:
1910 void View::on_settingViewTriggerIsZeroTime_changed(const QVariant new_value)
1912 if (!custom_zero_offset_set_)
1913 reset_zero_position();
1916 void View::perform_delayed_view_update()
1918 if (always_zoom_to_fit_) {
1920 } else if (sticky_scrolling_) {
1921 // Make right side of the view sticky
1924 get_scroll_layout(length, offset);
1926 const QSize areaSize = viewport_->size();
1927 length = max(length - areaSize.width(), 0.0);
1929 set_offset(scale_ * length);
1932 determine_time_unit();
1935 viewport_->update();
1938 void View::process_sticky_events()
1940 if (sticky_events_ & TraceTreeItemHExtentsChanged)
1942 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
1943 restack_all_trace_tree_items();
1947 // Clear the sticky events
1951 } // namespace trace
1952 } // namespace views