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::set_scale_offset(double scale, const Timestamp& offset)
788 // Disable sticky scrolling / always zoom to fit when acquisition runs
789 // and user drags the viewport
790 if ((scale_ == scale) && (offset_ != offset) &&
791 (session_.get_capture_state() == Session::Running)) {
793 if (sticky_scrolling_) {
794 sticky_scrolling_ = false;
795 sticky_scrolling_changed(false);
798 if (always_zoom_to_fit_) {
799 always_zoom_to_fit_ = false;
800 always_zoom_to_fit_changed(false);
807 calculate_tick_spacing();
814 vector< shared_ptr<SignalData> > View::get_visible_data() const
816 // Make a set of all the visible data objects
817 vector< shared_ptr<SignalData> > visible_data;
818 for (const shared_ptr<Signal>& sig : signals_)
820 visible_data.push_back(sig->data());
825 pair<Timestamp, Timestamp> View::get_time_extents() const
827 boost::optional<Timestamp> left_time, right_time;
829 vector< shared_ptr<SignalData> > data;
830 if (signals_.size() == 0)
831 return make_pair(0, 0);
833 data.push_back(signals_.front()->data());
835 for (const shared_ptr<SignalData>& d : data) {
836 const vector< shared_ptr<Segment> > segments = d->segments();
837 for (const shared_ptr<Segment>& s : segments) {
838 double samplerate = s->samplerate();
839 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
841 const Timestamp start_time = s->start_time();
842 left_time = left_time ?
843 min(*left_time, start_time) :
845 right_time = right_time ?
846 max(*right_time, start_time + d->max_sample_count() / samplerate) :
847 start_time + d->max_sample_count() / samplerate;
851 if (!left_time || !right_time)
852 return make_pair(0, 0);
854 assert(*left_time < *right_time);
855 return make_pair(*left_time, *right_time);
858 bool View::colored_bg() const
863 bool View::cursors_shown() const
865 return show_cursors_;
868 void View::show_cursors(bool show)
870 if (show_cursors_ != show) {
871 show_cursors_ = show;
873 cursor_state_changed(show);
879 void View::set_cursors(pv::util::Timestamp& first, pv::util::Timestamp& second)
883 cursors_->first()->set_time(first);
884 cursors_->second()->set_time(second);
890 void View::center_cursors()
894 const double time_width = scale_ * viewport_->width();
895 cursors_->first()->set_time(offset_ + time_width * 0.4);
896 cursors_->second()->set_time(offset_ + time_width * 0.6);
902 shared_ptr<CursorPair> View::cursors() const
907 shared_ptr<Flag> View::add_flag(const Timestamp& time)
909 shared_ptr<Flag> flag =
910 make_shared<Flag>(*this, time, QString("%1").arg(next_flag_text_));
911 flags_.push_back(flag);
913 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
914 (next_flag_text_ + 1);
916 time_item_appearance_changed(true, true);
920 void View::remove_flag(shared_ptr<Flag> flag)
923 time_item_appearance_changed(true, true);
926 vector< shared_ptr<Flag> > View::flags() const
928 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
929 stable_sort(flags.begin(), flags.end(),
930 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
931 return a->time() < b->time();
937 const QPoint& View::hover_point() const
942 const QWidget* View::hover_widget() const
944 return hover_widget_;
947 int64_t View::get_nearest_level_change(const QPoint &p)
949 // Is snapping disabled?
950 if (snap_distance_ == 0)
954 entry_t(shared_ptr<Signal> s) :
955 signal(s), delta(numeric_limits<int64_t>::max()), sample(-1), is_dense(false) {}
956 shared_ptr<Signal> signal;
962 vector<entry_t> list;
964 // Create list of signals to consider
965 if (signal_under_mouse_cursor_)
966 list.emplace_back(signal_under_mouse_cursor_);
968 for (shared_ptr<Signal> s : signals_) {
972 list.emplace_back(s);
975 // Get data for listed signals
976 for (entry_t &e : list) {
977 // Calculate sample number from cursor position
978 const double samples_per_pixel = e.signal->base()->get_samplerate() * scale();
979 const int64_t x_offset = offset().convert_to<double>() / scale();
980 const int64_t sample_num = max(((x_offset + p.x()) * samples_per_pixel), 0.0);
982 vector<data::LogicSegment::EdgePair> edges =
983 e.signal->get_nearest_level_changes(sample_num);
989 const int64_t first_sample_delta = abs(sample_num - edges.front().first);
990 const int64_t first_delta = first_sample_delta / samples_per_pixel;
991 e.delta = first_delta;
992 e.sample = edges.front().first;
994 // Check second edge if available
995 if (edges.size() == 2) {
996 // Note: -1 because this is usually the right edge and sample points are left-aligned
997 const int64_t second_sample_delta = abs(sample_num - edges.back().first - 1);
998 const int64_t second_delta = second_sample_delta / samples_per_pixel;
1000 // If both edges are too close, we mark this signal as being dense
1001 if ((first_delta + second_delta) <= snap_distance_)
1004 if (second_delta < first_delta) {
1005 e.delta = second_delta;
1006 e.sample = edges.back().first;
1011 // Look for the best match: non-dense first, then dense
1012 entry_t *match = nullptr;
1014 for (entry_t &e : list) {
1015 if (e.delta > snap_distance_ || e.is_dense)
1019 if (e.delta < match->delta)
1026 for (entry_t &e : list) {
1031 if (e.delta < match->delta)
1039 // Somewhat ugly hack to make TimeItem::drag_by() work
1040 signal_under_mouse_cursor_ = match->signal;
1042 return match->sample;
1048 void View::restack_all_trace_tree_items()
1050 // Make a list of owners that is sorted from deepest first
1051 const vector<shared_ptr<TraceTreeItem>> items(
1052 list_by_type<TraceTreeItem>());
1053 set< TraceTreeItemOwner* > owners;
1054 for (const auto &r : items)
1055 owners.insert(r->owner());
1056 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
1057 sort(sorted_owners.begin(), sorted_owners.end(),
1058 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
1059 return a->depth() > b->depth(); });
1061 // Restack the items recursively
1062 for (auto &o : sorted_owners)
1065 // Animate the items to their destination
1066 for (const auto &i : items)
1067 i->animate_to_layout_v_offset();
1070 int View::header_width() const
1072 return header_->extended_size_hint().width();
1075 void View::on_setting_changed(const QString &key, const QVariant &value)
1077 GlobalSettings settings;
1079 if (key == GlobalSettings::Key_View_ColoredBG) {
1080 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
1081 viewport_->update();
1084 if ((key == GlobalSettings::Key_View_ShowSamplingPoints) ||
1085 (key == GlobalSettings::Key_View_ShowAnalogMinorGrid))
1086 viewport_->update();
1088 if (key == GlobalSettings::Key_View_TriggerIsZeroTime)
1089 on_settingViewTriggerIsZeroTime_changed(value);
1091 if (key == GlobalSettings::Key_View_SnapDistance)
1092 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
1095 void View::trigger_event(int segment_id, util::Timestamp location)
1097 // TODO This doesn't work if we're showing multiple segments at once
1098 if ((uint32_t)segment_id != current_segment_)
1101 if (!custom_zero_offset_set_)
1102 reset_zero_position();
1104 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
1107 void View::get_scroll_layout(double &length, Timestamp &offset) const
1109 const pair<Timestamp, Timestamp> extents = get_time_extents();
1110 length = ((extents.second - extents.first) / scale_).convert_to<double>();
1111 offset = offset_ / scale_;
1114 void View::set_zoom(double scale, int offset)
1116 // Reset the "always zoom to fit" feature as the user changed the zoom
1117 always_zoom_to_fit_ = false;
1118 always_zoom_to_fit_changed(false);
1120 const Timestamp cursor_offset = offset_ + scale_ * offset;
1121 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
1122 const Timestamp new_offset = cursor_offset - new_scale * offset;
1123 set_scale_offset(new_scale.convert_to<double>(), new_offset);
1126 void View::calculate_tick_spacing()
1128 const double SpacingIncrement = 10.0f;
1129 const double MinValueSpacing = 40.0f;
1131 // Figure out the highest numeric value visible on a label
1132 const QSize areaSize = viewport_->size();
1133 const Timestamp max_time = max(fabs(offset_),
1134 fabs(offset_ + scale_ * areaSize.width()));
1136 double min_width = SpacingIncrement;
1137 double label_width, tick_period_width;
1139 QFontMetrics m(QApplication::font());
1141 // Copies of the member variables with the same name, used in the calculation
1142 // and written back afterwards, so that we don't emit signals all the time
1143 // during the calculation.
1144 pv::util::Timestamp tick_period = tick_period_;
1145 pv::util::SIPrefix tick_prefix = tick_prefix_;
1146 unsigned tick_precision = tick_precision_;
1149 const double min_period = scale_ * min_width;
1151 const int order = (int)floorf(log10f(min_period));
1152 const pv::util::Timestamp order_decimal =
1153 pow(pv::util::Timestamp(10), order);
1155 // Allow for a margin of error so that a scale unit of 1 can be used.
1156 // Otherwise, for a SU of 1 the tick period will almost always be below
1157 // the min_period by a small amount - and thus skipped in favor of 2.
1158 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
1159 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
1160 double tp_with_margin;
1161 unsigned int unit = 0;
1164 tp_with_margin = order_decimal.convert_to<double>() *
1165 (ScaleUnits[unit++] + tp_margin);
1166 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
1168 minor_tick_count_ = (unit == 2) ? 4 : 5;
1169 tick_period = order_decimal * ScaleUnits[unit - 1];
1170 tick_prefix = static_cast<pv::util::SIPrefix>(
1171 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
1173 // Precision is the number of fractional digits required, not
1174 // taking the prefix into account (and it must never be negative)
1175 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
1177 tick_period_width = (tick_period / scale_).convert_to<double>();
1179 const QString label_text = Ruler::format_time_with_distance(
1180 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
1182 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
1183 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
1186 min_width += SpacingIncrement;
1187 } while (tick_period_width < label_width);
1189 set_tick_period(tick_period);
1190 set_tick_prefix(tick_prefix);
1191 set_tick_precision(tick_precision);
1194 void View::adjust_top_margin()
1198 const QSize areaSize = viewport_->size();
1200 const pair<int, int> extents = v_extents();
1201 const int top_margin = owner_visual_v_offset() + extents.first;
1202 const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second;
1204 // Do we have empty space at the top while the last trace goes out of screen?
1205 if ((top_margin > 0) && (trace_bottom > areaSize.height())) {
1206 const int trace_height = extents.second - extents.first;
1208 // Center everything vertically if there is enough space
1209 if (areaSize.height() >= trace_height)
1210 set_v_offset(extents.first -
1211 ((areaSize.height() - trace_height) / 2));
1213 // Remove the top margin to make as many traces fit on screen as possible
1214 set_v_offset(extents.first);
1218 void View::update_scroll()
1221 QScrollBar *hscrollbar = scrollarea_->horizontalScrollBar();
1222 QScrollBar *vscrollbar = scrollarea_->verticalScrollBar();
1224 const QSize areaSize = viewport_->size();
1226 // Set the horizontal scroll bar
1229 get_scroll_layout(length, offset);
1230 length = max(length - areaSize.width(), 0.0);
1232 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
1234 hscrollbar->setPageStep(areaSize.width() / 2);
1235 hscrollbar->setSingleStep(major_tick_distance);
1237 updating_scroll_ = true;
1239 if (length < MaxScrollValue) {
1240 hscrollbar->setRange(0, length);
1241 hscrollbar->setSliderPosition(offset.convert_to<double>());
1243 hscrollbar->setRange(0, MaxScrollValue);
1244 hscrollbar->setSliderPosition(
1245 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
1248 updating_scroll_ = false;
1250 // Set the vertical scrollbar
1251 vscrollbar->setPageStep(areaSize.height());
1252 vscrollbar->setSingleStep(areaSize.height() / 8);
1254 const pair<int, int> extents = v_extents();
1256 // Don't change the scrollbar range if there are no traces
1257 if (extents.first != extents.second) {
1258 int top_margin = ViewScrollMargin;
1259 int btm_margin = ViewScrollMargin;
1261 vscrollbar->setRange(extents.first - areaSize.height() + top_margin,
1262 extents.second - btm_margin);
1265 if (scroll_needs_defaults_) {
1266 set_scroll_default();
1267 scroll_needs_defaults_ = false;
1271 void View::reset_scroll()
1273 scrollarea_->verticalScrollBar()->setRange(0, 0);
1276 void View::set_scroll_default()
1280 const QSize areaSize = viewport_->size();
1282 const pair<int, int> extents = v_extents();
1283 const int trace_height = extents.second - extents.first;
1285 // Do all traces fit in the view?
1286 if (areaSize.height() >= trace_height)
1287 // Center all traces vertically
1288 set_v_offset(extents.first -
1289 ((areaSize.height() - trace_height) / 2));
1291 // Put the first trace at the top, letting the bottom ones overflow
1292 set_v_offset(extents.first);
1295 void View::determine_if_header_was_shrunk()
1297 const int header_pane_width =
1298 splitter_->sizes().front(); // clazy:exclude=detaching-temporary
1300 // Allow for a slight margin of error so that we also accept
1301 // slight differences when e.g. a label name change increased
1302 // the overall width
1303 header_was_shrunk_ = (header_pane_width < (header_width() - 10));
1306 void View::resize_header_to_fit()
1308 // Setting the maximum width of the header widget doesn't work as
1309 // expected because the splitter would allow the user to make the
1310 // pane wider than that, creating empty space as a result.
1311 // To make this work, we stricly enforce the maximum width by
1312 // expanding the header unless the user shrunk it on purpose.
1313 // As we're then setting the width of the header pane, we set the
1314 // splitter to the maximum allowed position.
1316 int splitter_area_width = 0;
1317 for (int w : splitter_->sizes()) // clazy:exclude=range-loop
1318 splitter_area_width += w;
1320 // Make sure the header has enough horizontal space to show all labels fully
1321 QList<int> pane_sizes;
1322 pane_sizes.push_back(header_->extended_size_hint().width());
1323 pane_sizes.push_back(splitter_area_width - header_->extended_size_hint().width());
1324 splitter_->setSizes(pane_sizes);
1327 void View::update_layout()
1332 TraceTreeItemOwner* View::find_prevalent_trace_group(
1333 const shared_ptr<sigrok::ChannelGroup> &group,
1334 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1339 unordered_set<TraceTreeItemOwner*> owners;
1340 vector<TraceTreeItemOwner*> owner_list;
1342 // Make a set and a list of all the owners
1343 for (const auto& channel : group->channels()) {
1344 for (auto& entry : signal_map) {
1345 if (entry.first->channel() == channel) {
1346 TraceTreeItemOwner *const o = (entry.second)->owner();
1347 owner_list.push_back(o);
1353 // Iterate through the list of owners, and find the most prevalent
1354 size_t max_prevalence = 0;
1355 TraceTreeItemOwner *prevalent_owner = nullptr;
1356 for (TraceTreeItemOwner *owner : owners) {
1357 const size_t prevalence = count_if(
1358 owner_list.begin(), owner_list.end(),
1359 [&](TraceTreeItemOwner *o) { return o == owner; });
1360 if (prevalence > max_prevalence) {
1361 max_prevalence = prevalence;
1362 prevalent_owner = owner;
1366 return prevalent_owner;
1369 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
1370 const vector< shared_ptr<sigrok::Channel> > &channels,
1371 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1373 set< shared_ptr<Trace> > &add_list)
1375 vector< shared_ptr<Trace> > filtered_traces;
1377 for (const auto& channel : channels) {
1378 for (auto& entry : signal_map) {
1379 if (entry.first->channel() == channel) {
1380 shared_ptr<Trace> trace = entry.second;
1381 const auto list_iter = add_list.find(trace);
1382 if (list_iter == add_list.end())
1385 filtered_traces.push_back(trace);
1386 add_list.erase(list_iter);
1391 return filtered_traces;
1394 void View::determine_time_unit()
1396 // Check whether we know the sample rate and hence can use time as the unit
1397 if (time_unit_ == util::TimeUnit::Samples) {
1398 // Check all signals but...
1399 for (const shared_ptr<Signal>& signal : signals_) {
1400 const shared_ptr<SignalData> data = signal->data();
1402 // ...only check first segment of each
1403 const vector< shared_ptr<Segment> > segments = data->segments();
1404 if (!segments.empty())
1405 if (segments[0]->samplerate()) {
1406 set_time_unit(util::TimeUnit::Time);
1413 bool View::eventFilter(QObject *object, QEvent *event)
1415 const QEvent::Type type = event->type();
1417 if (type == QEvent::MouseMove) {
1420 hover_widget_ = qobject_cast<QWidget*>(object);
1422 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1423 if (object == viewport_)
1424 hover_point_ = mouse_event->pos();
1425 else if (object == ruler_)
1426 hover_point_ = mouse_event->pos();
1427 else if (object == header_)
1428 hover_point_ = QPoint(0, mouse_event->y());
1430 hover_point_ = QPoint(-1, -1);
1432 update_hover_point();
1434 if (grabbed_widget_) {
1435 int64_t nearest = get_nearest_level_change(hover_point_);
1436 pv::util::Timestamp mouse_time = offset_ + hover_point_.x() * scale_;
1438 if (nearest == -1) {
1439 grabbed_widget_->set_time(mouse_time);
1441 grabbed_widget_->set_time(nearest / get_signal_under_mouse_cursor()->base()->get_samplerate());
1445 } else if (type == QEvent::MouseButtonPress) {
1446 grabbed_widget_ = nullptr;
1448 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1449 if ((object == viewport_) && (mouse_event->button() & Qt::LeftButton)) {
1450 // Send event to all trace tree items
1451 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1452 list_by_type<TraceTreeItem>());
1453 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1454 r->mouse_left_press_event(mouse_event);
1456 } else if (type == QEvent::Leave) {
1457 hover_point_ = QPoint(-1, -1);
1458 update_hover_point();
1459 } else if (type == QEvent::Show) {
1461 // This is somewhat of a hack, unfortunately. We cannot use
1462 // set_v_offset() from within restore_settings() as the view
1463 // at that point is neither visible nor properly sized.
1464 // This is the least intrusive workaround I could come up
1465 // with: set the vertical offset (or scroll defaults) when
1466 // the view is shown, which happens after all widgets were
1467 // resized to their final sizes.
1470 if (settings_restored_)
1471 determine_if_header_was_shrunk();
1473 resize_header_to_fit();
1475 if (scroll_needs_defaults_) {
1476 set_scroll_default();
1477 scroll_needs_defaults_ = false;
1480 if (saved_v_offset_) {
1481 set_v_offset(saved_v_offset_);
1482 saved_v_offset_ = 0;
1486 return QObject::eventFilter(object, event);
1489 void View::contextMenuEvent(QContextMenuEvent *event)
1491 QPoint pos = event->pos() - QPoint(0, ruler_->sizeHint().height());
1493 const shared_ptr<ViewItem> r = viewport_->get_mouse_over_item(pos);
1497 QMenu *menu = r->create_view_context_menu(this, pos);
1499 menu->popup(event->globalPos());
1502 void View::resizeEvent(QResizeEvent* event)
1504 // Only adjust the top margin if we shrunk vertically
1505 if (event->size().height() < event->oldSize().height())
1506 adjust_top_margin();
1511 void View::update_hover_point()
1513 // Determine signal that the mouse cursor is hovering over
1514 signal_under_mouse_cursor_.reset();
1515 if (hover_widget_ == this) {
1516 for (const shared_ptr<Signal>& s : signals_) {
1517 const pair<int, int> extents = s->v_extents();
1518 const int top = s->get_visual_y() + extents.first;
1519 const int btm = s->get_visual_y() + extents.second;
1520 if ((hover_point_.y() >= top) && (hover_point_.y() <= btm)
1521 && s->base()->enabled())
1522 signal_under_mouse_cursor_ = s;
1526 // Update all trace tree items
1527 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1528 list_by_type<TraceTreeItem>());
1529 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1530 r->hover_point_changed(hover_point_);
1532 // Notify any other listeners
1533 hover_point_changed(hover_widget_, hover_point_);
1536 void View::row_item_appearance_changed(bool label, bool content)
1541 viewport_->update();
1544 void View::time_item_appearance_changed(bool label, bool content)
1549 // Make sure the header pane width is updated, too
1554 viewport_->update();
1557 void View::extents_changed(bool horz, bool vert)
1560 (horz ? TraceTreeItemHExtentsChanged : 0) |
1561 (vert ? TraceTreeItemVExtentsChanged : 0);
1563 if (!lazy_event_handler_.isActive())
1564 lazy_event_handler_.start();
1567 void View::on_signal_name_changed()
1569 if (!header_was_shrunk_)
1570 resize_header_to_fit();
1573 void View::on_splitter_moved()
1575 // The header can only shrink when the splitter is moved manually
1576 determine_if_header_was_shrunk();
1578 if (!header_was_shrunk_)
1579 resize_header_to_fit();
1582 void View::on_zoom_in_shortcut_triggered()
1587 void View::on_zoom_out_shortcut_triggered()
1592 void View::on_scroll_to_start_shortcut_triggered()
1597 void View::on_scroll_to_end_shortcut_triggered()
1599 set_h_offset(get_h_scrollbar_maximum());
1602 void View::h_scroll_value_changed(int value)
1604 if (updating_scroll_)
1607 // Disable sticky scrolling when user moves the horizontal scroll bar
1608 // during a running acquisition
1609 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1610 sticky_scrolling_ = false;
1611 sticky_scrolling_changed(false);
1614 const int range = scrollarea_->horizontalScrollBar()->maximum();
1615 if (range < MaxScrollValue)
1616 set_offset(scale_ * value);
1620 get_scroll_layout(length, offset);
1621 set_offset(scale_ * length * value / MaxScrollValue);
1625 viewport_->update();
1628 void View::v_scroll_value_changed()
1631 viewport_->update();
1634 void View::on_grab_ruler(int ruler_id)
1636 if (!cursors_shown()) {
1641 // Release the grabbed widget if its trigger hotkey was pressed twice
1643 grabbed_widget_ = (grabbed_widget_ == cursors_->first().get()) ?
1644 nullptr : cursors_->first().get();
1646 grabbed_widget_ = (grabbed_widget_ == cursors_->second().get()) ?
1647 nullptr : cursors_->second().get();
1649 if (grabbed_widget_)
1650 grabbed_widget_->set_time(ruler_->get_absolute_time_from_x_pos(
1651 mapFromGlobal(QCursor::pos()).x() - header_width()));
1654 void View::signals_changed()
1656 using sigrok::Channel;
1658 vector< shared_ptr<Channel> > channels;
1659 shared_ptr<sigrok::Device> sr_dev;
1660 bool signals_added_or_removed = false;
1662 // Do we need to set the vertical scrollbar to its default position later?
1663 // We do if there are no traces, i.e. the scroll bar has no range set
1664 bool reset_scrollbar =
1665 (scrollarea_->verticalScrollBar()->minimum() ==
1666 scrollarea_->verticalScrollBar()->maximum());
1668 if (!session_.device()) {
1672 sr_dev = session_.device()->device();
1674 channels = sr_dev->channels();
1677 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1679 // Make a list of traces that are being added, and a list of traces
1680 // that are being removed
1681 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1682 const set<shared_ptr<Trace>> prev_traces(
1683 prev_trace_list.begin(), prev_trace_list.end());
1685 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1687 #ifdef ENABLE_DECODE
1688 traces.insert(decode_traces_.begin(), decode_traces_.end());
1691 set< shared_ptr<Trace> > add_traces;
1692 set_difference(traces.begin(), traces.end(),
1693 prev_traces.begin(), prev_traces.end(),
1694 inserter(add_traces, add_traces.begin()));
1696 set< shared_ptr<Trace> > remove_traces;
1697 set_difference(prev_traces.begin(), prev_traces.end(),
1698 traces.begin(), traces.end(),
1699 inserter(remove_traces, remove_traces.begin()));
1701 // Make a look-up table of sigrok Channels to pulseview Signals
1702 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1704 for (const shared_ptr<Signal>& sig : signals_)
1705 signal_map[sig->base()] = sig;
1707 // Populate channel groups
1709 for (auto& entry : sr_dev->channel_groups()) {
1710 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1712 if (group->channels().size() <= 1)
1715 // Find best trace group to add to
1716 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1719 // If there is no trace group, create one
1720 shared_ptr<TraceGroup> new_trace_group;
1722 new_trace_group.reset(new TraceGroup());
1723 owner = new_trace_group.get();
1726 // Extract traces for the trace group, removing them from
1728 const vector< shared_ptr<Trace> > new_traces_in_group =
1729 extract_new_traces_for_channels(group->channels(),
1730 signal_map, add_traces);
1732 // Add the traces to the group
1733 const pair<int, int> prev_v_extents = owner->v_extents();
1734 int offset = prev_v_extents.second - prev_v_extents.first;
1735 for (const shared_ptr<Trace>& trace : new_traces_in_group) {
1737 owner->add_child_item(trace);
1739 const pair<int, int> extents = trace->v_extents();
1740 if (trace->enabled())
1741 offset += -extents.first;
1742 trace->force_to_v_offset(offset);
1743 if (trace->enabled())
1744 offset += extents.second;
1747 if (new_trace_group) {
1748 // Assign proper vertical offsets to each channel in the group
1749 new_trace_group->restack_items();
1751 // If this is a new group, enqueue it in the new top level
1753 if (!new_traces_in_group.empty())
1754 new_top_level_items.push_back(new_trace_group);
1758 // Enqueue the remaining logic channels in a group
1759 vector< shared_ptr<Channel> > logic_channels;
1760 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1761 [](const shared_ptr<Channel>& c) {
1762 return c->type() == sigrok::ChannelType::LOGIC; });
1764 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1765 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1767 if (non_grouped_logic_signals.size() > 0) {
1768 const shared_ptr<TraceGroup> non_grouped_trace_group(
1769 make_shared<TraceGroup>());
1770 for (const shared_ptr<Trace>& trace : non_grouped_logic_signals)
1771 non_grouped_trace_group->add_child_item(trace);
1773 non_grouped_trace_group->restack_items();
1774 new_top_level_items.push_back(non_grouped_trace_group);
1777 // Enqueue the remaining channels as free ungrouped traces
1778 const vector< shared_ptr<Trace> > new_top_level_signals =
1779 extract_new_traces_for_channels(channels, signal_map, add_traces);
1780 new_top_level_items.insert(new_top_level_items.end(),
1781 new_top_level_signals.begin(), new_top_level_signals.end());
1783 // Enqueue any remaining traces i.e. decode traces
1784 new_top_level_items.insert(new_top_level_items.end(),
1785 add_traces.begin(), add_traces.end());
1787 // Remove any removed traces
1788 for (const shared_ptr<Trace>& trace : remove_traces) {
1789 TraceTreeItemOwner *const owner = trace->owner();
1791 owner->remove_child_item(trace);
1792 signals_added_or_removed = true;
1795 // Remove any empty trace groups
1796 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1797 if (group->child_items().size() == 0) {
1798 remove_child_item(group);
1802 // Add and position the pending top levels items
1803 int offset = v_extents().second;
1804 for (auto item : new_top_level_items) {
1805 add_child_item(item);
1807 // Position the item after the last item or at the top if there is none
1808 const pair<int, int> extents = item->v_extents();
1810 if (item->enabled())
1811 offset += -extents.first;
1813 item->force_to_v_offset(offset);
1815 if (item->enabled())
1816 offset += extents.second;
1817 signals_added_or_removed = true;
1821 if (signals_added_or_removed && !header_was_shrunk_)
1822 resize_header_to_fit();
1827 viewport_->update();
1829 if (reset_scrollbar)
1830 set_scroll_default();
1833 void View::capture_state_updated(int state)
1835 GlobalSettings settings;
1837 if (state == Session::Running) {
1838 set_time_unit(util::TimeUnit::Samples);
1840 trigger_markers_.clear();
1841 if (!custom_zero_offset_set_)
1842 set_zero_position(0);
1844 scale_at_acq_start_ = scale_;
1845 offset_at_acq_start_ = offset_;
1847 // Activate "always zoom to fit" if the setting is enabled and we're
1848 // the main view of this session (other trace views may be used for
1849 // zooming and we don't want to mess them up)
1850 bool state = settings.value(GlobalSettings::Key_View_ZoomToFitDuringAcq).toBool();
1851 if (is_main_view_ && state) {
1852 always_zoom_to_fit_ = true;
1853 always_zoom_to_fit_changed(always_zoom_to_fit_);
1856 // Enable sticky scrolling if the setting is enabled
1857 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
1859 // Reset all traces to segment 0
1860 current_segment_ = 0;
1861 set_current_segment(current_segment_);
1864 if (state == Session::Stopped) {
1865 // After acquisition has stopped we need to re-calculate the ticks once
1866 // as it's otherwise done when the user pans or zooms, which is too late
1867 calculate_tick_spacing();
1869 // Reset "always zoom to fit", the acquisition has stopped
1870 if (always_zoom_to_fit_) {
1871 // Perform a final zoom-to-fit before disabling
1872 zoom_fit(always_zoom_to_fit_);
1873 always_zoom_to_fit_ = false;
1874 always_zoom_to_fit_changed(always_zoom_to_fit_);
1877 bool zoom_to_fit_after_acq =
1878 settings.value(GlobalSettings::Key_View_ZoomToFitAfterAcq).toBool();
1880 // Only perform zoom-to-fit if the user hasn't altered the viewport and
1881 // we didn't restore settings in the meanwhile
1882 if (zoom_to_fit_after_acq &&
1883 !suppress_zoom_to_fit_after_acq_ &&
1884 (scale_ == scale_at_acq_start_) &&
1885 (offset_ == offset_at_acq_start_))
1886 zoom_fit(false); // We're stopped, so the GUI state doesn't matter
1888 suppress_zoom_to_fit_after_acq_ = false;
1892 void View::on_new_segment(int new_segment_id)
1894 on_segment_changed(new_segment_id);
1897 void View::on_segment_completed(int segment_id)
1899 on_segment_changed(segment_id);
1902 void View::on_segment_changed(int segment)
1904 switch (segment_display_mode_) {
1905 case Trace::ShowLastSegmentOnly:
1906 case Trace::ShowSingleSegmentOnly:
1907 set_current_segment(segment);
1910 case Trace::ShowLastCompleteSegmentOnly:
1911 // Only update if all segments are complete
1912 if (session_.all_segments_complete(segment))
1913 set_current_segment(segment);
1916 case Trace::ShowAllSegments:
1917 case Trace::ShowAccumulatedIntensity:
1923 void View::on_settingViewTriggerIsZeroTime_changed(const QVariant new_value)
1927 if (!custom_zero_offset_set_)
1928 reset_zero_position();
1931 void View::perform_delayed_view_update()
1933 if (always_zoom_to_fit_) {
1935 } else if (sticky_scrolling_) {
1936 // Make right side of the view sticky
1939 get_scroll_layout(length, offset);
1941 const QSize areaSize = viewport_->size();
1942 length = max(length - areaSize.width(), 0.0);
1944 set_offset(scale_ * length);
1947 determine_time_unit();
1950 viewport_->update();
1953 void View::process_sticky_events()
1955 if (sticky_events_ & TraceTreeItemHExtentsChanged)
1957 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
1958 restack_all_trace_tree_items();
1962 // Clear the sticky events
1966 } // namespace trace
1967 } // namespace views