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 /* Area at the top and bottom of the view that can't be scrolled out of sight */
98 const int View::ViewScrollMargin = 50;
100 const int View::ScaleUnits[3] = {1, 2, 5};
102 CustomScrollArea::CustomScrollArea(QWidget *parent) :
103 QAbstractScrollArea(parent)
107 bool CustomScrollArea::viewportEvent(QEvent *event)
109 switch (event->type()) {
111 case QEvent::MouseButtonPress:
112 case QEvent::MouseButtonRelease:
113 case QEvent::MouseButtonDblClick:
114 case QEvent::MouseMove:
116 case QEvent::TouchBegin:
117 case QEvent::TouchUpdate:
118 case QEvent::TouchEnd:
121 return QAbstractScrollArea::viewportEvent(event);
125 View::View(Session &session, bool is_main_view, QMainWindow *parent) :
126 ViewBase(session, is_main_view, parent),
128 // Note: Place defaults in View::reset_view_state(), not here
129 splitter_(new QSplitter()),
130 header_was_shrunk_(false), // The splitter remains unchanged after a reset, so this goes here
131 sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui()
132 scroll_needs_defaults_(true)
134 QVBoxLayout *root_layout = new QVBoxLayout(this);
135 root_layout->setContentsMargins(0, 0, 0, 0);
136 root_layout->addWidget(splitter_);
138 viewport_ = new Viewport(*this);
139 scrollarea_ = new CustomScrollArea(splitter_);
140 scrollarea_->setViewport(viewport_);
141 scrollarea_->setFrameShape(QFrame::NoFrame);
143 ruler_ = new Ruler(*this);
145 header_ = new Header(*this);
146 header_->setMinimumWidth(10); // So that the arrow tips show at least
148 // We put the header into a simple layout so that we can add the top margin,
149 // allowing us to make it line up with the bottom of the ruler
150 QWidget *header_container = new QWidget();
151 header_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
152 QVBoxLayout *header_layout = new QVBoxLayout(header_container);
153 header_layout->setContentsMargins(0, ruler_->sizeHint().height(), 0, 0);
154 header_layout->addWidget(header_);
156 // To let the ruler and scrollarea be on the same split pane, we need a layout
157 QWidget *trace_container = new QWidget();
158 trace_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
159 QVBoxLayout *trace_layout = new QVBoxLayout(trace_container);
160 trace_layout->setSpacing(0); // We don't want space between the ruler and scrollarea
161 trace_layout->setContentsMargins(0, 0, 0, 0);
162 trace_layout->addWidget(ruler_);
163 trace_layout->addWidget(scrollarea_);
165 splitter_->addWidget(header_container);
166 splitter_->addWidget(trace_container);
167 splitter_->setHandleWidth(1); // Don't show a visible rubber band
168 splitter_->setCollapsible(0, false); // Prevent the header from collapsing
169 splitter_->setCollapsible(1, false); // Prevent the traces from collapsing
170 splitter_->setStretchFactor(0, 0); // Prevent the panes from being resized
171 splitter_->setStretchFactor(1, 1); // when the entire view is resized
172 splitter_->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
174 viewport_->installEventFilter(this);
175 ruler_->installEventFilter(this);
176 header_->installEventFilter(this);
178 // Set up settings and event handlers
179 GlobalSettings settings;
180 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
181 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
183 GlobalSettings::add_change_handler(this);
185 connect(scrollarea_->horizontalScrollBar(), SIGNAL(valueChanged(int)),
186 this, SLOT(h_scroll_value_changed(int)));
187 connect(scrollarea_->verticalScrollBar(), SIGNAL(valueChanged(int)),
188 this, SLOT(v_scroll_value_changed()));
190 connect(header_, SIGNAL(selection_changed()),
191 ruler_, SLOT(clear_selection()));
192 connect(ruler_, SIGNAL(selection_changed()),
193 header_, SLOT(clear_selection()));
195 connect(header_, SIGNAL(selection_changed()),
196 this, SIGNAL(selection_changed()));
197 connect(ruler_, SIGNAL(selection_changed()),
198 this, SIGNAL(selection_changed()));
200 connect(splitter_, SIGNAL(splitterMoved(int, int)),
201 this, SLOT(on_splitter_moved()));
203 connect(&lazy_event_handler_, SIGNAL(timeout()),
204 this, SLOT(process_sticky_events()));
205 lazy_event_handler_.setSingleShot(true);
206 lazy_event_handler_.setInterval(1000 / ViewBase::MaxViewAutoUpdateRate);
208 // Set up local keyboard shortcuts
209 zoom_in_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Plus), this,
210 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
211 zoom_in_shortcut_->setAutoRepeat(false);
213 zoom_out_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Minus), this,
214 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
215 zoom_out_shortcut_->setAutoRepeat(false);
217 zoom_in_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Up), this,
218 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
219 zoom_out_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Down), this,
220 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
222 home_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Home), this,
223 SLOT(on_scroll_to_start_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
224 home_shortcut_->setAutoRepeat(false);
226 end_shortcut_ = new QShortcut(QKeySequence(Qt::Key_End), this,
227 SLOT(on_scroll_to_end_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
228 end_shortcut_->setAutoRepeat(false);
230 grab_ruler_left_shortcut_ = new QShortcut(QKeySequence(Qt::Key_1), this,
231 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
232 connect(grab_ruler_left_shortcut_, &QShortcut::activated,
233 this, [=]{on_grab_ruler(1);});
234 grab_ruler_left_shortcut_->setAutoRepeat(false);
236 grab_ruler_right_shortcut_ = new QShortcut(QKeySequence(Qt::Key_2), this,
237 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
238 connect(grab_ruler_right_shortcut_, &QShortcut::activated,
239 this, [=]{on_grab_ruler(2);});
240 grab_ruler_right_shortcut_->setAutoRepeat(false);
242 cancel_grab_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Escape), this,
243 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
244 connect(cancel_grab_shortcut_, &QShortcut::activated,
245 this, [=]{grabbed_widget_ = nullptr;});
246 cancel_grab_shortcut_->setAutoRepeat(false);
248 // Trigger the initial event manually. The default device has signals
249 // which were created before this object came into being
252 // Make sure the transparent widgets are on the top
261 GlobalSettings::remove_change_handler(this);
264 ViewType View::get_type() const
266 return ViewTypeTrace;
269 void View::reset_view_state()
271 ViewBase::reset_view_state();
273 segment_display_mode_ = Trace::ShowLastSegmentOnly;
274 segment_selectable_ = false;
279 custom_zero_offset_set_ = false;
280 updating_scroll_ = false;
281 settings_restored_ = false;
282 always_zoom_to_fit_ = false;
284 tick_prefix_ = pv::util::SIPrefix::yocto;
286 time_unit_ = util::TimeUnit::Time;
287 show_cursors_ = false;
288 cursors_ = make_shared<CursorPair>(*this);
289 next_flag_text_ = 'A';
290 trigger_markers_.clear();
291 hover_widget_ = nullptr;
292 grabbed_widget_ = nullptr;
293 hover_point_ = QPoint(-1, -1);
294 scroll_needs_defaults_ = true;
296 scale_at_acq_start_ = 0;
297 offset_at_acq_start_ = 0;
298 suppress_zoom_to_fit_after_acq_ = false;
300 show_cursors_ = false;
301 cursor_state_changed(show_cursors_);
304 // Update the zoom state
305 calculate_tick_spacing();
307 // Make sure the standard bar's segment selector is in sync
308 set_segment_display_mode(segment_display_mode_);
311 Session& View::session()
316 const Session& View::session() const
321 vector< shared_ptr<Signal> > View::signals() const
326 shared_ptr<Signal> View::get_signal_by_signalbase(shared_ptr<data::SignalBase> base) const
328 shared_ptr<Signal> ret_val;
330 for (const shared_ptr<Signal>& s : signals_)
331 if (s->base() == base) {
339 void View::clear_signals()
341 ViewBase::clear_signals();
345 void View::add_signal(const shared_ptr<Signal> signal)
347 ViewBase::add_signalbase(signal->base());
348 signals_.push_back(signal);
350 signal->set_segment_display_mode(segment_display_mode_);
351 signal->set_current_segment(current_segment_);
353 connect(signal->base().get(), SIGNAL(name_changed(const QString&)),
354 this, SLOT(on_signal_name_changed()));
358 void View::clear_decode_signals()
360 ViewBase::clear_decode_signals();
361 decode_traces_.clear();
364 void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
366 ViewBase::add_decode_signal(signal);
368 shared_ptr<DecodeTrace> d(
369 new DecodeTrace(session_, signal, decode_traces_.size()));
370 decode_traces_.push_back(d);
372 d->set_segment_display_mode(segment_display_mode_);
373 d->set_current_segment(current_segment_);
375 connect(signal.get(), SIGNAL(name_changed(const QString&)),
376 this, SLOT(on_signal_name_changed()));
379 void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
381 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
382 if ((*i)->base() == signal) {
383 decode_traces_.erase(i);
388 ViewBase::remove_decode_signal(signal);
392 shared_ptr<Signal> View::get_signal_under_mouse_cursor() const
394 return signal_under_mouse_cursor_;
402 const View* View::view() const
407 Viewport* View::viewport()
412 const Viewport* View::viewport() const
417 QAbstractScrollArea* View::scrollarea() const
422 const Ruler* View::ruler() const
427 void View::save_settings(QSettings &settings) const
429 settings.setValue("scale", scale_);
430 settings.setValue("v_offset",
431 scrollarea_->verticalScrollBar()->sliderPosition());
433 settings.setValue("splitter_state", splitter_->saveState());
434 settings.setValue("segment_display_mode", segment_display_mode_);
436 GlobalSettings::store_timestamp(settings, "offset", offset_);
438 if (custom_zero_offset_set_)
439 GlobalSettings::store_timestamp(settings, "zero_offset", -zero_offset_);
441 settings.remove("zero_offset");
443 for (const shared_ptr<Signal>& signal : signals_) {
444 settings.beginGroup(signal->base()->internal_name());
445 signal->save_settings(settings);
450 void View::restore_settings(QSettings &settings)
452 // Note: It is assumed that this function is only called once,
453 // immediately after restoring a previous session.
455 if (settings.contains("scale"))
456 set_scale(settings.value("scale").toDouble());
458 if (settings.contains("offset")) {
459 // This also updates ruler_offset_
460 set_offset(GlobalSettings::restore_timestamp(settings, "offset"));
463 if (settings.contains("zero_offset"))
464 set_zero_position(GlobalSettings::restore_timestamp(settings, "zero_offset"));
466 if (settings.contains("splitter_state"))
467 splitter_->restoreState(settings.value("splitter_state").toByteArray());
469 if (settings.contains("segment_display_mode"))
470 set_segment_display_mode(
471 (Trace::SegmentDisplayMode)(settings.value("segment_display_mode").toInt()));
473 for (shared_ptr<Signal> signal : signals_) {
474 settings.beginGroup(signal->base()->internal_name());
475 signal->restore_settings(settings);
479 if (settings.contains("v_offset")) {
480 saved_v_offset_ = settings.value("v_offset").toInt();
481 set_v_offset(saved_v_offset_);
482 scroll_needs_defaults_ = false;
483 // Note: see eventFilter() for additional information
486 settings_restored_ = true;
487 suppress_zoom_to_fit_after_acq_ = true;
489 // Update the ruler so that it uses the new scale
490 calculate_tick_spacing();
493 vector< shared_ptr<TimeItem> > View::time_items() const
495 const vector<shared_ptr<Flag>> f(flags());
496 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
499 items.push_back(cursors_);
500 items.push_back(cursors_->first());
501 items.push_back(cursors_->second());
504 for (auto& trigger_marker : trigger_markers_)
505 items.push_back(trigger_marker);
510 double View::scale() const
515 void View::set_scale(double scale)
517 if (scale_ != scale) {
523 void View::set_offset(const pv::util::Timestamp& offset, bool force_update)
525 if ((offset_ != offset) || force_update) {
527 ruler_offset_ = offset_ + zero_offset_;
532 const Timestamp& View::offset() const
537 const Timestamp& View::ruler_offset() const
539 return ruler_offset_;
542 void View::set_zero_position(const pv::util::Timestamp& position)
544 zero_offset_ = -position;
545 custom_zero_offset_set_ = true;
547 // Force an immediate update of the offsets
548 set_offset(offset_, true);
552 void View::reset_zero_position()
556 // When enabled, the first trigger for this segment is used as the zero position
557 GlobalSettings settings;
558 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
560 if (trigger_is_zero_time) {
561 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
563 if (triggers.size() > 0)
564 zero_offset_ = triggers.front();
567 custom_zero_offset_set_ = false;
569 // Force an immediate update of the offsets
570 set_offset(offset_, true);
574 pv::util::Timestamp View::zero_offset() const
579 int View::owner_visual_v_offset() const
581 return -scrollarea_->verticalScrollBar()->sliderPosition();
584 void View::set_v_offset(int offset)
586 scrollarea_->verticalScrollBar()->setSliderPosition(offset);
591 void View::set_h_offset(int offset)
593 scrollarea_->horizontalScrollBar()->setSliderPosition(offset);
598 int View::get_h_scrollbar_maximum() const
600 return scrollarea_->horizontalScrollBar()->maximum();
603 unsigned int View::depth() const
608 uint32_t View::current_segment() const
610 return current_segment_;
613 pv::util::SIPrefix View::tick_prefix() const
618 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
620 if (tick_prefix_ != tick_prefix) {
621 tick_prefix_ = tick_prefix;
622 tick_prefix_changed();
626 unsigned int View::tick_precision() const
628 return tick_precision_;
631 void View::set_tick_precision(unsigned tick_precision)
633 if (tick_precision_ != tick_precision) {
634 tick_precision_ = tick_precision;
635 tick_precision_changed();
639 const pv::util::Timestamp& View::tick_period() const
644 unsigned int View::minor_tick_count() const
646 return minor_tick_count_;
649 void View::set_tick_period(const pv::util::Timestamp& tick_period)
651 if (tick_period_ != tick_period) {
652 tick_period_ = tick_period;
653 tick_period_changed();
657 TimeUnit View::time_unit() const
662 void View::set_time_unit(pv::util::TimeUnit time_unit)
664 if (time_unit_ != time_unit) {
665 time_unit_ = time_unit;
670 void View::set_current_segment(uint32_t segment_id)
672 current_segment_ = segment_id;
674 for (const shared_ptr<Signal>& signal : signals_)
675 signal->set_current_segment(current_segment_);
677 for (shared_ptr<DecodeTrace>& dt : decode_traces_)
678 dt->set_current_segment(current_segment_);
681 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
683 trigger_markers_.clear();
684 for (util::Timestamp timestamp : triggers)
685 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, timestamp));
687 if (!custom_zero_offset_set_)
688 reset_zero_position();
692 segment_changed(segment_id);
695 bool View::segment_is_selectable() const
697 return segment_selectable_;
700 Trace::SegmentDisplayMode View::segment_display_mode() const
702 return segment_display_mode_;
705 void View::set_segment_display_mode(Trace::SegmentDisplayMode mode)
707 segment_display_mode_ = mode;
709 for (const shared_ptr<Signal>& signal : signals_)
710 signal->set_segment_display_mode(mode);
712 uint32_t last_segment = session_.get_segment_count() - 1;
715 case Trace::ShowLastSegmentOnly:
716 if (current_segment_ != last_segment)
717 set_current_segment(last_segment);
720 case Trace::ShowLastCompleteSegmentOnly:
721 // Do nothing if we only have one segment so far
722 if (last_segment > 0) {
723 // If the last segment isn't complete, the previous one must be
724 uint32_t segment_id =
725 (session_.all_segments_complete(last_segment)) ?
726 last_segment : last_segment - 1;
728 if (current_segment_ != segment_id)
729 set_current_segment(segment_id);
733 case Trace::ShowSingleSegmentOnly:
734 case Trace::ShowAllSegments:
735 case Trace::ShowAccumulatedIntensity:
737 // Current segment remains as-is
741 segment_selectable_ = true;
743 if ((mode == Trace::ShowAllSegments) || (mode == Trace::ShowAccumulatedIntensity))
744 segment_selectable_ = false;
748 segment_display_mode_changed((int)mode, segment_selectable_);
751 void View::zoom(double steps)
753 zoom(steps, viewport_->width() / 2);
756 void View::zoom(double steps, int offset)
758 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
761 void View::zoom_fit(bool gui_state)
763 // Act as one-shot when stopped, toggle along with the GUI otherwise
764 if (session_.get_capture_state() == Session::Stopped) {
765 always_zoom_to_fit_ = false;
766 always_zoom_to_fit_changed(false);
768 always_zoom_to_fit_ = gui_state;
769 always_zoom_to_fit_changed(gui_state);
772 const pair<Timestamp, Timestamp> extents = get_time_extents();
773 const Timestamp delta = extents.second - extents.first;
774 if (delta < Timestamp("1e-12"))
778 const int w = viewport_->width();
782 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
783 set_scale_offset(scale.convert_to<double>(), extents.first);
786 void View::focus_on_range(uint64_t start_sample, uint64_t end_sample)
789 const int w = viewport_->width();
793 const double samplerate = session_.get_samplerate();
795 const uint64_t sample_delta = (end_sample - start_sample);
797 // Note: We add 20% margin on the left and 5% on the right
798 const Timestamp delta = (sample_delta * 1.25) / samplerate;
800 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
801 const Timestamp offset = (start_sample - sample_delta * 0.20) / samplerate;
803 set_scale_offset(scale.convert_to<double>(), offset);
806 void View::set_scale_offset(double scale, const Timestamp& offset)
808 // Disable sticky scrolling / always zoom to fit when acquisition runs
809 // and user drags the viewport
810 if ((scale_ == scale) && (offset_ != offset) &&
811 (session_.get_capture_state() == Session::Running)) {
813 if (sticky_scrolling_) {
814 sticky_scrolling_ = false;
815 sticky_scrolling_changed(false);
818 if (always_zoom_to_fit_) {
819 always_zoom_to_fit_ = false;
820 always_zoom_to_fit_changed(false);
827 calculate_tick_spacing();
834 vector< shared_ptr<SignalData> > View::get_visible_data() const
836 // Make a set of all the visible data objects
837 vector< shared_ptr<SignalData> > visible_data;
838 for (const shared_ptr<Signal>& sig : signals_)
840 visible_data.push_back(sig->data());
845 pair<Timestamp, Timestamp> View::get_time_extents() const
847 boost::optional<Timestamp> left_time, right_time;
849 vector< shared_ptr<SignalData> > data;
850 if (signals_.size() == 0)
851 return make_pair(0, 0);
853 data.push_back(signals_.front()->data());
855 for (const shared_ptr<SignalData>& d : data) {
856 const vector< shared_ptr<Segment> > segments = d->segments();
857 for (const shared_ptr<Segment>& s : segments) {
858 double samplerate = s->samplerate();
859 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
861 const Timestamp start_time = s->start_time();
862 left_time = left_time ?
863 min(*left_time, start_time) :
865 right_time = right_time ?
866 max(*right_time, start_time + d->max_sample_count() / samplerate) :
867 start_time + d->max_sample_count() / samplerate;
871 if (!left_time || !right_time)
872 return make_pair(0, 0);
874 assert(*left_time < *right_time);
875 return make_pair(*left_time, *right_time);
878 bool View::colored_bg() const
883 bool View::cursors_shown() const
885 return show_cursors_;
888 void View::show_cursors(bool show)
890 if (show_cursors_ != show) {
891 show_cursors_ = show;
893 cursor_state_changed(show);
899 void View::set_cursors(pv::util::Timestamp& first, pv::util::Timestamp& second)
903 cursors_->first()->set_time(first);
904 cursors_->second()->set_time(second);
910 void View::center_cursors()
914 const double time_width = scale_ * viewport_->width();
915 cursors_->first()->set_time(offset_ + time_width * 0.4);
916 cursors_->second()->set_time(offset_ + time_width * 0.6);
922 shared_ptr<CursorPair> View::cursors() const
927 shared_ptr<Flag> View::add_flag(const Timestamp& time)
929 shared_ptr<Flag> flag =
930 make_shared<Flag>(*this, time, QString("%1").arg(next_flag_text_));
931 flags_.push_back(flag);
933 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
934 (next_flag_text_ + 1);
936 time_item_appearance_changed(true, true);
940 void View::remove_flag(shared_ptr<Flag> flag)
943 time_item_appearance_changed(true, true);
946 vector< shared_ptr<Flag> > View::flags() const
948 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
949 stable_sort(flags.begin(), flags.end(),
950 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
951 return a->time() < b->time();
957 const QPoint& View::hover_point() const
962 const QWidget* View::hover_widget() const
964 return hover_widget_;
967 int64_t View::get_nearest_level_change(const QPoint &p)
969 // Is snapping disabled?
970 if (snap_distance_ == 0)
974 entry_t(shared_ptr<Signal> s) :
975 signal(s), delta(numeric_limits<int64_t>::max()), sample(-1), is_dense(false) {}
976 shared_ptr<Signal> signal;
982 vector<entry_t> list;
984 // Create list of signals to consider
985 if (signal_under_mouse_cursor_)
986 list.emplace_back(signal_under_mouse_cursor_);
988 for (shared_ptr<Signal> s : signals_) {
992 list.emplace_back(s);
995 // Get data for listed signals
996 for (entry_t &e : list) {
997 // Calculate sample number from cursor position
998 const double samples_per_pixel = e.signal->base()->get_samplerate() * scale();
999 const int64_t x_offset = offset().convert_to<double>() / scale();
1000 const int64_t sample_num = max(((x_offset + p.x()) * samples_per_pixel), 0.0);
1002 vector<data::LogicSegment::EdgePair> edges =
1003 e.signal->get_nearest_level_changes(sample_num);
1009 const int64_t first_sample_delta = abs(sample_num - edges.front().first);
1010 const int64_t first_delta = first_sample_delta / samples_per_pixel;
1011 e.delta = first_delta;
1012 e.sample = edges.front().first;
1014 // Check second edge if available
1015 if (edges.size() == 2) {
1016 // Note: -1 because this is usually the right edge and sample points are left-aligned
1017 const int64_t second_sample_delta = abs(sample_num - edges.back().first - 1);
1018 const int64_t second_delta = second_sample_delta / samples_per_pixel;
1020 // If both edges are too close, we mark this signal as being dense
1021 if ((first_delta + second_delta) <= snap_distance_)
1024 if (second_delta < first_delta) {
1025 e.delta = second_delta;
1026 e.sample = edges.back().first;
1031 // Look for the best match: non-dense first, then dense
1032 entry_t *match = nullptr;
1034 for (entry_t &e : list) {
1035 if (e.delta > snap_distance_ || e.is_dense)
1039 if (e.delta < match->delta)
1046 for (entry_t &e : list) {
1051 if (e.delta < match->delta)
1059 // Somewhat ugly hack to make TimeItem::drag_by() work
1060 signal_under_mouse_cursor_ = match->signal;
1062 return match->sample;
1068 void View::restack_all_trace_tree_items()
1070 // Make a list of owners that is sorted from deepest first
1071 const vector<shared_ptr<TraceTreeItem>> items(
1072 list_by_type<TraceTreeItem>());
1073 set< TraceTreeItemOwner* > owners;
1074 for (const auto &r : items)
1075 owners.insert(r->owner());
1076 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
1077 sort(sorted_owners.begin(), sorted_owners.end(),
1078 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
1079 return a->depth() > b->depth(); });
1081 // Restack the items recursively
1082 for (auto &o : sorted_owners)
1085 // Animate the items to their destination
1086 for (const auto &i : items)
1087 i->animate_to_layout_v_offset();
1090 int View::header_width() const
1092 return header_->extended_size_hint().width();
1095 void View::on_setting_changed(const QString &key, const QVariant &value)
1097 GlobalSettings settings;
1099 if (key == GlobalSettings::Key_View_ColoredBG) {
1100 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
1101 viewport_->update();
1104 if ((key == GlobalSettings::Key_View_ShowSamplingPoints) ||
1105 (key == GlobalSettings::Key_View_ShowAnalogMinorGrid))
1106 viewport_->update();
1108 if (key == GlobalSettings::Key_View_TriggerIsZeroTime)
1109 on_settingViewTriggerIsZeroTime_changed(value);
1111 if (key == GlobalSettings::Key_View_SnapDistance)
1112 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
1115 void View::trigger_event(int segment_id, util::Timestamp location)
1117 // TODO This doesn't work if we're showing multiple segments at once
1118 if ((uint32_t)segment_id != current_segment_)
1121 if (!custom_zero_offset_set_)
1122 reset_zero_position();
1124 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
1127 void View::get_scroll_layout(double &length, Timestamp &offset) const
1129 const pair<Timestamp, Timestamp> extents = get_time_extents();
1130 length = ((extents.second - extents.first) / scale_).convert_to<double>();
1131 offset = offset_ / scale_;
1134 void View::set_zoom(double scale, int offset)
1136 // Reset the "always zoom to fit" feature as the user changed the zoom
1137 always_zoom_to_fit_ = false;
1138 always_zoom_to_fit_changed(false);
1140 const Timestamp cursor_offset = offset_ + scale_ * offset;
1141 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
1142 const Timestamp new_offset = cursor_offset - new_scale * offset;
1143 set_scale_offset(new_scale.convert_to<double>(), new_offset);
1146 void View::calculate_tick_spacing()
1148 const double SpacingIncrement = 10.0f;
1149 const double MinValueSpacing = 40.0f;
1151 // Figure out the highest numeric value visible on a label
1152 const QSize areaSize = viewport_->size();
1153 const Timestamp max_time = max(fabs(offset_),
1154 fabs(offset_ + scale_ * areaSize.width()));
1156 double min_width = SpacingIncrement;
1157 double label_width, tick_period_width;
1159 QFontMetrics m(QApplication::font());
1161 // Copies of the member variables with the same name, used in the calculation
1162 // and written back afterwards, so that we don't emit signals all the time
1163 // during the calculation.
1164 pv::util::Timestamp tick_period = tick_period_;
1165 pv::util::SIPrefix tick_prefix = tick_prefix_;
1166 unsigned tick_precision = tick_precision_;
1169 const double min_period = scale_ * min_width;
1171 const int order = (int)floorf(log10f(min_period));
1172 const pv::util::Timestamp order_decimal =
1173 pow(pv::util::Timestamp(10), order);
1175 // Allow for a margin of error so that a scale unit of 1 can be used.
1176 // Otherwise, for a SU of 1 the tick period will almost always be below
1177 // the min_period by a small amount - and thus skipped in favor of 2.
1178 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
1179 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
1180 double tp_with_margin;
1181 unsigned int unit = 0;
1184 tp_with_margin = order_decimal.convert_to<double>() *
1185 (ScaleUnits[unit++] + tp_margin);
1186 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
1188 minor_tick_count_ = (unit == 2) ? 4 : 5;
1189 tick_period = order_decimal * ScaleUnits[unit - 1];
1190 tick_prefix = static_cast<pv::util::SIPrefix>(
1191 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
1193 // Precision is the number of fractional digits required, not
1194 // taking the prefix into account (and it must never be negative)
1195 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
1197 tick_period_width = (tick_period / scale_).convert_to<double>();
1199 const QString label_text = Ruler::format_time_with_distance(
1200 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
1202 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
1203 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
1206 min_width += SpacingIncrement;
1207 } while (tick_period_width < label_width);
1209 set_tick_period(tick_period);
1210 set_tick_prefix(tick_prefix);
1211 set_tick_precision(tick_precision);
1214 void View::adjust_top_margin()
1218 const QSize areaSize = viewport_->size();
1220 const pair<int, int> extents = v_extents();
1221 const int top_margin = owner_visual_v_offset() + extents.first;
1222 const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second;
1224 // Do we have empty space at the top while the last trace goes out of screen?
1225 if ((top_margin > 0) && (trace_bottom > areaSize.height())) {
1226 const int trace_height = extents.second - extents.first;
1228 // Center everything vertically if there is enough space
1229 if (areaSize.height() >= trace_height)
1230 set_v_offset(extents.first -
1231 ((areaSize.height() - trace_height) / 2));
1233 // Remove the top margin to make as many traces fit on screen as possible
1234 set_v_offset(extents.first);
1238 void View::update_scroll()
1241 QScrollBar *hscrollbar = scrollarea_->horizontalScrollBar();
1242 QScrollBar *vscrollbar = scrollarea_->verticalScrollBar();
1244 const QSize areaSize = viewport_->size();
1246 // Set the horizontal scroll bar
1249 get_scroll_layout(length, offset);
1250 length = max(length - areaSize.width(), 0.0);
1252 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
1254 hscrollbar->setPageStep(areaSize.width() / 2);
1255 hscrollbar->setSingleStep(major_tick_distance);
1257 updating_scroll_ = true;
1259 if (length < MaxScrollValue) {
1260 hscrollbar->setRange(0, length);
1261 hscrollbar->setSliderPosition(offset.convert_to<double>());
1263 hscrollbar->setRange(0, MaxScrollValue);
1264 hscrollbar->setSliderPosition(
1265 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
1268 updating_scroll_ = false;
1270 // Set the vertical scrollbar
1271 vscrollbar->setPageStep(areaSize.height());
1272 vscrollbar->setSingleStep(areaSize.height() / 8);
1274 const pair<int, int> extents = v_extents();
1276 // Don't change the scrollbar range if there are no traces
1277 if (extents.first != extents.second) {
1278 int top_margin = ViewScrollMargin;
1279 int btm_margin = ViewScrollMargin;
1281 vscrollbar->setRange(extents.first - areaSize.height() + top_margin,
1282 extents.second - btm_margin);
1285 if (scroll_needs_defaults_) {
1286 set_scroll_default();
1287 scroll_needs_defaults_ = false;
1291 void View::reset_scroll()
1293 scrollarea_->verticalScrollBar()->setRange(0, 0);
1296 void View::set_scroll_default()
1300 const QSize areaSize = viewport_->size();
1302 const pair<int, int> extents = v_extents();
1303 const int trace_height = extents.second - extents.first;
1305 // Do all traces fit in the view?
1306 if (areaSize.height() >= trace_height)
1307 // Center all traces vertically
1308 set_v_offset(extents.first -
1309 ((areaSize.height() - trace_height) / 2));
1311 // Put the first trace at the top, letting the bottom ones overflow
1312 set_v_offset(extents.first);
1315 void View::determine_if_header_was_shrunk()
1317 const int header_pane_width =
1318 splitter_->sizes().front(); // clazy:exclude=detaching-temporary
1320 // Allow for a slight margin of error so that we also accept
1321 // slight differences when e.g. a label name change increased
1322 // the overall width
1323 header_was_shrunk_ = (header_pane_width < (header_width() - 10));
1326 void View::resize_header_to_fit()
1328 // Setting the maximum width of the header widget doesn't work as
1329 // expected because the splitter would allow the user to make the
1330 // pane wider than that, creating empty space as a result.
1331 // To make this work, we stricly enforce the maximum width by
1332 // expanding the header unless the user shrunk it on purpose.
1333 // As we're then setting the width of the header pane, we set the
1334 // splitter to the maximum allowed position.
1336 int splitter_area_width = 0;
1337 for (int w : splitter_->sizes()) // clazy:exclude=range-loop
1338 splitter_area_width += w;
1340 // Make sure the header has enough horizontal space to show all labels fully
1341 QList<int> pane_sizes;
1342 pane_sizes.push_back(header_->extended_size_hint().width());
1343 pane_sizes.push_back(splitter_area_width - header_->extended_size_hint().width());
1344 splitter_->setSizes(pane_sizes);
1347 void View::update_layout()
1352 TraceTreeItemOwner* View::find_prevalent_trace_group(
1353 const shared_ptr<sigrok::ChannelGroup> &group,
1354 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1359 unordered_set<TraceTreeItemOwner*> owners;
1360 vector<TraceTreeItemOwner*> owner_list;
1362 // Make a set and a list of all the owners
1363 for (const auto& channel : group->channels()) {
1364 for (auto& entry : signal_map) {
1365 if (entry.first->channel() == channel) {
1366 TraceTreeItemOwner *const o = (entry.second)->owner();
1367 owner_list.push_back(o);
1373 // Iterate through the list of owners, and find the most prevalent
1374 size_t max_prevalence = 0;
1375 TraceTreeItemOwner *prevalent_owner = nullptr;
1376 for (TraceTreeItemOwner *owner : owners) {
1377 const size_t prevalence = count_if(
1378 owner_list.begin(), owner_list.end(),
1379 [&](TraceTreeItemOwner *o) { return o == owner; });
1380 if (prevalence > max_prevalence) {
1381 max_prevalence = prevalence;
1382 prevalent_owner = owner;
1386 return prevalent_owner;
1389 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
1390 const vector< shared_ptr<sigrok::Channel> > &channels,
1391 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1393 set< shared_ptr<Trace> > &add_list)
1395 vector< shared_ptr<Trace> > filtered_traces;
1397 for (const auto& channel : channels) {
1398 for (auto& entry : signal_map) {
1399 if (entry.first->channel() == channel) {
1400 shared_ptr<Trace> trace = entry.second;
1401 const auto list_iter = add_list.find(trace);
1402 if (list_iter == add_list.end())
1405 filtered_traces.push_back(trace);
1406 add_list.erase(list_iter);
1411 return filtered_traces;
1414 void View::determine_time_unit()
1416 // Check whether we know the sample rate and hence can use time as the unit
1417 if (time_unit_ == util::TimeUnit::Samples) {
1418 // Check all signals but...
1419 for (const shared_ptr<Signal>& signal : signals_) {
1420 const shared_ptr<SignalData> data = signal->data();
1422 // ...only check first segment of each
1423 const vector< shared_ptr<Segment> > segments = data->segments();
1424 if (!segments.empty())
1425 if (segments[0]->samplerate()) {
1426 set_time_unit(util::TimeUnit::Time);
1433 bool View::eventFilter(QObject *object, QEvent *event)
1435 const QEvent::Type type = event->type();
1437 if (type == QEvent::MouseMove) {
1440 hover_widget_ = qobject_cast<QWidget*>(object);
1442 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1443 if (object == viewport_)
1444 hover_point_ = mouse_event->pos();
1445 else if (object == ruler_)
1446 hover_point_ = mouse_event->pos();
1447 else if (object == header_)
1448 hover_point_ = QPoint(0, mouse_event->y());
1450 hover_point_ = QPoint(-1, -1);
1452 update_hover_point();
1454 if (grabbed_widget_) {
1455 int64_t nearest = get_nearest_level_change(hover_point_);
1456 pv::util::Timestamp mouse_time = offset_ + hover_point_.x() * scale_;
1458 if (nearest == -1) {
1459 grabbed_widget_->set_time(mouse_time);
1461 grabbed_widget_->set_time(nearest / get_signal_under_mouse_cursor()->base()->get_samplerate());
1465 } else if (type == QEvent::MouseButtonPress) {
1466 grabbed_widget_ = nullptr;
1468 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1469 if ((object == viewport_) && (mouse_event->button() & Qt::LeftButton)) {
1470 // Send event to all trace tree items
1471 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1472 list_by_type<TraceTreeItem>());
1473 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1474 r->mouse_left_press_event(mouse_event);
1476 } else if (type == QEvent::Leave) {
1477 hover_point_ = QPoint(-1, -1);
1478 update_hover_point();
1479 } else if (type == QEvent::Show) {
1481 // This is somewhat of a hack, unfortunately. We cannot use
1482 // set_v_offset() from within restore_settings() as the view
1483 // at that point is neither visible nor properly sized.
1484 // This is the least intrusive workaround I could come up
1485 // with: set the vertical offset (or scroll defaults) when
1486 // the view is shown, which happens after all widgets were
1487 // resized to their final sizes.
1490 if (settings_restored_)
1491 determine_if_header_was_shrunk();
1493 resize_header_to_fit();
1495 if (scroll_needs_defaults_) {
1496 set_scroll_default();
1497 scroll_needs_defaults_ = false;
1500 if (saved_v_offset_) {
1501 set_v_offset(saved_v_offset_);
1502 saved_v_offset_ = 0;
1506 return QObject::eventFilter(object, event);
1509 void View::contextMenuEvent(QContextMenuEvent *event)
1511 QPoint pos = event->pos() - QPoint(0, ruler_->sizeHint().height());
1513 const shared_ptr<ViewItem> r = viewport_->get_mouse_over_item(pos);
1517 QMenu *menu = r->create_view_context_menu(this, pos);
1519 menu->popup(event->globalPos());
1522 void View::resizeEvent(QResizeEvent* event)
1524 // Only adjust the top margin if we shrunk vertically
1525 if (event->size().height() < event->oldSize().height())
1526 adjust_top_margin();
1531 void View::update_hover_point()
1533 // Determine signal that the mouse cursor is hovering over
1534 signal_under_mouse_cursor_.reset();
1535 if (hover_widget_ == this) {
1536 for (const shared_ptr<Signal>& s : signals_) {
1537 const pair<int, int> extents = s->v_extents();
1538 const int top = s->get_visual_y() + extents.first;
1539 const int btm = s->get_visual_y() + extents.second;
1540 if ((hover_point_.y() >= top) && (hover_point_.y() <= btm)
1541 && s->base()->enabled())
1542 signal_under_mouse_cursor_ = s;
1546 // Update all trace tree items
1547 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1548 list_by_type<TraceTreeItem>());
1549 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1550 r->hover_point_changed(hover_point_);
1552 // Notify any other listeners
1553 hover_point_changed(hover_widget_, hover_point_);
1556 void View::row_item_appearance_changed(bool label, bool content)
1561 viewport_->update();
1564 void View::time_item_appearance_changed(bool label, bool content)
1569 // Make sure the header pane width is updated, too
1574 viewport_->update();
1577 void View::extents_changed(bool horz, bool vert)
1580 (horz ? TraceTreeItemHExtentsChanged : 0) |
1581 (vert ? TraceTreeItemVExtentsChanged : 0);
1583 if (!lazy_event_handler_.isActive())
1584 lazy_event_handler_.start();
1587 void View::on_signal_name_changed()
1589 if (!header_was_shrunk_)
1590 resize_header_to_fit();
1593 void View::on_splitter_moved()
1595 // The header can only shrink when the splitter is moved manually
1596 determine_if_header_was_shrunk();
1598 if (!header_was_shrunk_)
1599 resize_header_to_fit();
1602 void View::on_zoom_in_shortcut_triggered()
1607 void View::on_zoom_out_shortcut_triggered()
1612 void View::on_scroll_to_start_shortcut_triggered()
1617 void View::on_scroll_to_end_shortcut_triggered()
1619 set_h_offset(get_h_scrollbar_maximum());
1622 void View::h_scroll_value_changed(int value)
1624 if (updating_scroll_)
1627 // Disable sticky scrolling when user moves the horizontal scroll bar
1628 // during a running acquisition
1629 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1630 sticky_scrolling_ = false;
1631 sticky_scrolling_changed(false);
1634 const int range = scrollarea_->horizontalScrollBar()->maximum();
1635 if (range < MaxScrollValue)
1636 set_offset(scale_ * value);
1640 get_scroll_layout(length, offset);
1641 set_offset(scale_ * length * value / MaxScrollValue);
1645 viewport_->update();
1648 void View::v_scroll_value_changed()
1651 viewport_->update();
1654 void View::on_grab_ruler(int ruler_id)
1656 if (!cursors_shown()) {
1661 // Release the grabbed widget if its trigger hotkey was pressed twice
1663 grabbed_widget_ = (grabbed_widget_ == cursors_->first().get()) ?
1664 nullptr : cursors_->first().get();
1666 grabbed_widget_ = (grabbed_widget_ == cursors_->second().get()) ?
1667 nullptr : cursors_->second().get();
1669 if (grabbed_widget_)
1670 grabbed_widget_->set_time(ruler_->get_absolute_time_from_x_pos(
1671 mapFromGlobal(QCursor::pos()).x() - header_width()));
1674 void View::signals_changed()
1676 using sigrok::Channel;
1678 vector< shared_ptr<Channel> > channels;
1679 shared_ptr<sigrok::Device> sr_dev;
1680 bool signals_added_or_removed = false;
1682 // Do we need to set the vertical scrollbar to its default position later?
1683 // We do if there are no traces, i.e. the scroll bar has no range set
1684 bool reset_scrollbar =
1685 (scrollarea_->verticalScrollBar()->minimum() ==
1686 scrollarea_->verticalScrollBar()->maximum());
1688 if (!session_.device()) {
1692 sr_dev = session_.device()->device();
1694 channels = sr_dev->channels();
1697 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1699 // Make a list of traces that are being added, and a list of traces
1700 // that are being removed
1701 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1702 const set<shared_ptr<Trace>> prev_traces(
1703 prev_trace_list.begin(), prev_trace_list.end());
1705 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1707 #ifdef ENABLE_DECODE
1708 traces.insert(decode_traces_.begin(), decode_traces_.end());
1711 set< shared_ptr<Trace> > add_traces;
1712 set_difference(traces.begin(), traces.end(),
1713 prev_traces.begin(), prev_traces.end(),
1714 inserter(add_traces, add_traces.begin()));
1716 set< shared_ptr<Trace> > remove_traces;
1717 set_difference(prev_traces.begin(), prev_traces.end(),
1718 traces.begin(), traces.end(),
1719 inserter(remove_traces, remove_traces.begin()));
1721 // Make a look-up table of sigrok Channels to pulseview Signals
1722 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1724 for (const shared_ptr<Signal>& sig : signals_)
1725 signal_map[sig->base()] = sig;
1727 // Populate channel groups
1729 for (auto& entry : sr_dev->channel_groups()) {
1730 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1732 if (group->channels().size() <= 1)
1735 // Find best trace group to add to
1736 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1739 // If there is no trace group, create one
1740 shared_ptr<TraceGroup> new_trace_group;
1742 new_trace_group.reset(new TraceGroup());
1743 owner = new_trace_group.get();
1746 // Extract traces for the trace group, removing them from
1748 const vector< shared_ptr<Trace> > new_traces_in_group =
1749 extract_new_traces_for_channels(group->channels(),
1750 signal_map, add_traces);
1752 // Add the traces to the group
1753 const pair<int, int> prev_v_extents = owner->v_extents();
1754 int offset = prev_v_extents.second - prev_v_extents.first;
1755 for (const shared_ptr<Trace>& trace : new_traces_in_group) {
1757 owner->add_child_item(trace);
1759 const pair<int, int> extents = trace->v_extents();
1760 if (trace->enabled())
1761 offset += -extents.first;
1762 trace->force_to_v_offset(offset);
1763 if (trace->enabled())
1764 offset += extents.second;
1767 if (new_trace_group) {
1768 // Assign proper vertical offsets to each channel in the group
1769 new_trace_group->restack_items();
1771 // If this is a new group, enqueue it in the new top level
1773 if (!new_traces_in_group.empty())
1774 new_top_level_items.push_back(new_trace_group);
1778 // Enqueue the remaining logic channels in a group
1779 vector< shared_ptr<Channel> > logic_channels;
1780 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1781 [](const shared_ptr<Channel>& c) {
1782 return c->type() == sigrok::ChannelType::LOGIC; });
1784 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1785 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1787 if (non_grouped_logic_signals.size() > 0) {
1788 const shared_ptr<TraceGroup> non_grouped_trace_group(
1789 make_shared<TraceGroup>());
1790 for (const shared_ptr<Trace>& trace : non_grouped_logic_signals)
1791 non_grouped_trace_group->add_child_item(trace);
1793 non_grouped_trace_group->restack_items();
1794 new_top_level_items.push_back(non_grouped_trace_group);
1797 // Enqueue the remaining channels as free ungrouped traces
1798 const vector< shared_ptr<Trace> > new_top_level_signals =
1799 extract_new_traces_for_channels(channels, signal_map, add_traces);
1800 new_top_level_items.insert(new_top_level_items.end(),
1801 new_top_level_signals.begin(), new_top_level_signals.end());
1803 // Enqueue any remaining traces i.e. decode traces
1804 new_top_level_items.insert(new_top_level_items.end(),
1805 add_traces.begin(), add_traces.end());
1807 // Remove any removed traces
1808 for (const shared_ptr<Trace>& trace : remove_traces) {
1809 TraceTreeItemOwner *const owner = trace->owner();
1811 owner->remove_child_item(trace);
1812 signals_added_or_removed = true;
1815 // Remove any empty trace groups
1816 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1817 if (group->child_items().size() == 0) {
1818 remove_child_item(group);
1822 // Add and position the pending top levels items
1823 int offset = v_extents().second;
1824 for (auto item : new_top_level_items) {
1825 add_child_item(item);
1827 // Position the item after the last item or at the top if there is none
1828 const pair<int, int> extents = item->v_extents();
1830 if (item->enabled())
1831 offset += -extents.first;
1833 item->force_to_v_offset(offset);
1835 if (item->enabled())
1836 offset += extents.second;
1837 signals_added_or_removed = true;
1841 if (signals_added_or_removed && !header_was_shrunk_)
1842 resize_header_to_fit();
1847 viewport_->update();
1849 if (reset_scrollbar)
1850 set_scroll_default();
1853 void View::capture_state_updated(int state)
1855 GlobalSettings settings;
1857 if (state == Session::Running) {
1858 set_time_unit(util::TimeUnit::Samples);
1860 trigger_markers_.clear();
1861 if (!custom_zero_offset_set_)
1862 set_zero_position(0);
1864 scale_at_acq_start_ = scale_;
1865 offset_at_acq_start_ = offset_;
1867 // Activate "always zoom to fit" if the setting is enabled and we're
1868 // the main view of this session (other trace views may be used for
1869 // zooming and we don't want to mess them up)
1870 bool state = settings.value(GlobalSettings::Key_View_ZoomToFitDuringAcq).toBool();
1871 if (is_main_view_ && state) {
1872 always_zoom_to_fit_ = true;
1873 always_zoom_to_fit_changed(always_zoom_to_fit_);
1876 // Enable sticky scrolling if the setting is enabled
1877 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
1879 // Reset all traces to segment 0
1880 current_segment_ = 0;
1881 set_current_segment(current_segment_);
1884 if (state == Session::Stopped) {
1885 // After acquisition has stopped we need to re-calculate the ticks once
1886 // as it's otherwise done when the user pans or zooms, which is too late
1887 calculate_tick_spacing();
1889 // Reset "always zoom to fit", the acquisition has stopped
1890 if (always_zoom_to_fit_) {
1891 // Perform a final zoom-to-fit before disabling
1892 zoom_fit(always_zoom_to_fit_);
1893 always_zoom_to_fit_ = false;
1894 always_zoom_to_fit_changed(always_zoom_to_fit_);
1897 bool zoom_to_fit_after_acq =
1898 settings.value(GlobalSettings::Key_View_ZoomToFitAfterAcq).toBool();
1900 // Only perform zoom-to-fit if the user hasn't altered the viewport and
1901 // we didn't restore settings in the meanwhile
1902 if (zoom_to_fit_after_acq &&
1903 !suppress_zoom_to_fit_after_acq_ &&
1904 (scale_ == scale_at_acq_start_) &&
1905 (offset_ == offset_at_acq_start_))
1906 zoom_fit(false); // We're stopped, so the GUI state doesn't matter
1908 suppress_zoom_to_fit_after_acq_ = false;
1912 void View::on_new_segment(int new_segment_id)
1914 on_segment_changed(new_segment_id);
1917 void View::on_segment_completed(int segment_id)
1919 on_segment_changed(segment_id);
1922 void View::on_segment_changed(int segment)
1924 switch (segment_display_mode_) {
1925 case Trace::ShowLastSegmentOnly:
1926 case Trace::ShowSingleSegmentOnly:
1927 set_current_segment(segment);
1930 case Trace::ShowLastCompleteSegmentOnly:
1931 // Only update if all segments are complete
1932 if (session_.all_segments_complete(segment))
1933 set_current_segment(segment);
1936 case Trace::ShowAllSegments:
1937 case Trace::ShowAccumulatedIntensity:
1943 void View::on_settingViewTriggerIsZeroTime_changed(const QVariant new_value)
1947 if (!custom_zero_offset_set_)
1948 reset_zero_position();
1951 void View::perform_delayed_view_update()
1953 if (always_zoom_to_fit_) {
1955 } else if (sticky_scrolling_) {
1956 // Make right side of the view sticky
1959 get_scroll_layout(length, offset);
1961 const QSize areaSize = viewport_->size();
1962 length = max(length - areaSize.width(), 0.0);
1964 set_offset(scale_ * length);
1967 determine_time_unit();
1970 viewport_->update();
1973 void View::process_sticky_events()
1975 if (sticky_events_ & TraceTreeItemHExtentsChanged)
1977 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
1978 restack_all_trace_tree_items();
1982 // Clear the sticky events
1986 } // namespace trace
1987 } // namespace views