2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include <libsigrokdecode/libsigrokdecode.h>
33 #include <QApplication>
36 #include <QFontMetrics>
38 #include <QMouseEvent>
40 #include <QVBoxLayout>
42 #include <libsigrokcxx/libsigrokcxx.hpp>
44 #include "analogsignal.hpp"
46 #include "logicsignal.hpp"
49 #include "tracegroup.hpp"
50 #include "triggermarker.hpp"
52 #include "viewport.hpp"
54 #include "pv/metadata_obj.hpp"
55 #include "pv/data/logic.hpp"
56 #include "pv/data/logicsegment.hpp"
57 #include "pv/devices/device.hpp"
58 #include "pv/globalsettings.hpp"
59 #include "pv/session.hpp"
60 #include "pv/util.hpp"
63 #include "decodetrace.hpp"
66 using pv::data::SignalData;
67 using pv::data::Segment;
68 using pv::util::TimeUnit;
69 using pv::util::Timestamp;
71 using std::back_inserter;
75 using std::lock_guard;
78 using std::make_shared;
80 using std::numeric_limits;
83 using std::set_difference;
84 using std::shared_ptr;
91 const Timestamp View::MaxScale("1e9");
92 const Timestamp View::MinScale("1e-12");
94 const int View::MaxScrollValue = INT_MAX / 2;
96 /* Area at the top and bottom of the view that can't be scrolled out of sight */
97 const int View::ViewScrollMargin = 50;
99 const int View::ScaleUnits[3] = {1, 2, 5};
101 CustomScrollArea::CustomScrollArea(QWidget *parent) :
102 QAbstractScrollArea(parent)
106 bool CustomScrollArea::viewportEvent(QEvent *event)
108 switch (event->type()) {
110 case QEvent::MouseButtonPress:
111 case QEvent::MouseButtonRelease:
112 case QEvent::MouseButtonDblClick:
113 case QEvent::MouseMove:
115 case QEvent::TouchBegin:
116 case QEvent::TouchUpdate:
117 case QEvent::TouchEnd:
120 return QAbstractScrollArea::viewportEvent(event);
124 View::View(Session &session, bool is_main_view, QMainWindow *parent) :
125 ViewBase(session, is_main_view, parent),
127 // Note: Place defaults in View::reset_view_state(), not here
128 splitter_(new QSplitter()),
129 header_was_shrunk_(false), // The splitter remains unchanged after a reset, so this goes here
130 sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui()
131 scroll_needs_defaults_(true)
133 QVBoxLayout *root_layout = new QVBoxLayout(this);
134 root_layout->setContentsMargins(0, 0, 0, 0);
135 root_layout->addWidget(splitter_);
137 viewport_ = new Viewport(*this);
138 scrollarea_ = new CustomScrollArea(splitter_);
139 scrollarea_->setViewport(viewport_);
140 scrollarea_->setFrameShape(QFrame::NoFrame);
142 ruler_ = new Ruler(*this);
144 header_ = new Header(*this);
145 header_->setMinimumWidth(10); // So that the arrow tips show at least
147 // We put the header into a simple layout so that we can add the top margin,
148 // allowing us to make it line up with the bottom of the ruler
149 QWidget *header_container = new QWidget();
150 header_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
151 QVBoxLayout *header_layout = new QVBoxLayout(header_container);
152 header_layout->setContentsMargins(0, ruler_->sizeHint().height(), 0, 0);
153 header_layout->addWidget(header_);
155 // To let the ruler and scrollarea be on the same split pane, we need a layout
156 QWidget *trace_container = new QWidget();
157 trace_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
158 QVBoxLayout *trace_layout = new QVBoxLayout(trace_container);
159 trace_layout->setSpacing(0); // We don't want space between the ruler and scrollarea
160 trace_layout->setContentsMargins(0, 0, 0, 0);
161 trace_layout->addWidget(ruler_);
162 trace_layout->addWidget(scrollarea_);
164 splitter_->addWidget(header_container);
165 splitter_->addWidget(trace_container);
166 splitter_->setHandleWidth(1); // Don't show a visible rubber band
167 splitter_->setCollapsible(0, false); // Prevent the header from collapsing
168 splitter_->setCollapsible(1, false); // Prevent the traces from collapsing
169 splitter_->setStretchFactor(0, 0); // Prevent the panes from being resized
170 splitter_->setStretchFactor(1, 1); // when the entire view is resized
171 splitter_->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
173 viewport_->installEventFilter(this);
174 ruler_->installEventFilter(this);
175 header_->installEventFilter(this);
177 // Set up settings and event handlers
178 GlobalSettings settings;
179 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
180 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
182 GlobalSettings::add_change_handler(this);
184 // Set up metadata objects and event handlers
186 session_.metadata_obj_manager()->create_object(MetadataObjMainViewRange);
187 session_.metadata_obj_manager()->create_object(MetadataObjMousePos);
190 // Set up UI event handlers
191 connect(scrollarea_->horizontalScrollBar(), SIGNAL(valueChanged(int)),
192 this, SLOT(h_scroll_value_changed(int)));
193 connect(scrollarea_->verticalScrollBar(), SIGNAL(valueChanged(int)),
194 this, SLOT(v_scroll_value_changed()));
196 connect(header_, SIGNAL(selection_changed()),
197 ruler_, SLOT(clear_selection()));
198 connect(ruler_, SIGNAL(selection_changed()),
199 header_, SLOT(clear_selection()));
201 connect(header_, SIGNAL(selection_changed()),
202 this, SIGNAL(selection_changed()));
203 connect(ruler_, SIGNAL(selection_changed()),
204 this, SIGNAL(selection_changed()));
206 connect(splitter_, SIGNAL(splitterMoved(int, int)),
207 this, SLOT(on_splitter_moved()));
209 connect(&lazy_event_handler_, SIGNAL(timeout()),
210 this, SLOT(process_sticky_events()));
211 lazy_event_handler_.setSingleShot(true);
212 lazy_event_handler_.setInterval(1000 / ViewBase::MaxViewAutoUpdateRate);
214 // Set up local keyboard shortcuts
215 zoom_in_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Plus), this,
216 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
217 zoom_in_shortcut_->setAutoRepeat(false);
219 zoom_out_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Minus), this,
220 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
221 zoom_out_shortcut_->setAutoRepeat(false);
223 zoom_in_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Up), this,
224 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
225 zoom_out_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Down), this,
226 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
228 home_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Home), this,
229 SLOT(on_scroll_to_start_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
230 home_shortcut_->setAutoRepeat(false);
232 end_shortcut_ = new QShortcut(QKeySequence(Qt::Key_End), this,
233 SLOT(on_scroll_to_end_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
234 end_shortcut_->setAutoRepeat(false);
236 grab_ruler_left_shortcut_ = new QShortcut(QKeySequence(Qt::Key_1), this,
237 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
238 connect(grab_ruler_left_shortcut_, &QShortcut::activated,
239 this, [=]{on_grab_ruler(1);});
240 grab_ruler_left_shortcut_->setAutoRepeat(false);
242 grab_ruler_right_shortcut_ = new QShortcut(QKeySequence(Qt::Key_2), this,
243 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
244 connect(grab_ruler_right_shortcut_, &QShortcut::activated,
245 this, [=]{on_grab_ruler(2);});
246 grab_ruler_right_shortcut_->setAutoRepeat(false);
248 cancel_grab_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Escape), this,
249 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
250 connect(cancel_grab_shortcut_, &QShortcut::activated,
251 this, [=]{grabbed_widget_ = nullptr;});
252 cancel_grab_shortcut_->setAutoRepeat(false);
254 // Trigger the initial event manually. The default device has signals
255 // which were created before this object came into being
258 // Make sure the transparent widgets are on the top
267 GlobalSettings::remove_change_handler(this);
270 ViewType View::get_type() const
272 return ViewTypeTrace;
275 void View::reset_view_state()
277 ViewBase::reset_view_state();
279 segment_display_mode_ = Trace::ShowLastSegmentOnly;
280 segment_selectable_ = false;
285 custom_zero_offset_set_ = false;
286 updating_scroll_ = false;
287 settings_restored_ = false;
288 always_zoom_to_fit_ = false;
290 tick_prefix_ = pv::util::SIPrefix::yocto;
292 time_unit_ = util::TimeUnit::Time;
293 show_cursors_ = false;
294 cursors_ = make_shared<CursorPair>(*this);
295 next_flag_text_ = 'A';
296 trigger_markers_.clear();
297 hover_widget_ = nullptr;
298 grabbed_widget_ = nullptr;
299 hover_point_ = QPoint(-1, -1);
300 scroll_needs_defaults_ = true;
302 scale_at_acq_start_ = 0;
303 offset_at_acq_start_ = 0;
304 suppress_zoom_to_fit_after_acq_ = false;
306 show_cursors_ = false;
307 cursor_state_changed(show_cursors_);
310 // Update the zoom state
311 calculate_tick_spacing();
313 // Make sure the standard bar's segment selector is in sync
314 set_segment_display_mode(segment_display_mode_);
317 Session& View::session()
322 const Session& View::session() const
327 vector< shared_ptr<Signal> > View::signals() const
332 shared_ptr<Signal> View::get_signal_by_signalbase(shared_ptr<data::SignalBase> base) const
334 shared_ptr<Signal> ret_val;
336 for (const shared_ptr<Signal>& s : signals_)
337 if (s->base() == base) {
345 void View::clear_signalbases()
347 ViewBase::clear_signalbases();
351 void View::add_signalbase(const shared_ptr<data::SignalBase> signalbase)
353 ViewBase::add_signalbase(signalbase);
355 shared_ptr<Signal> signal;
357 switch (signalbase->type()) {
358 case SignalBase::LogicChannel:
359 signal = shared_ptr<Signal>(new LogicSignal(session_, session_.device(), signalbase));
362 case SignalBase::AnalogChannel:
363 signal = shared_ptr<Signal>(new AnalogSignal(session_, signalbase));
367 qDebug() << "Unknown signalbase type:" << signalbase->type();
372 signals_.push_back(signal);
374 signal->set_segment_display_mode(segment_display_mode_);
375 signal->set_current_segment(current_segment_);
377 // Secondary views use the signal's settings in the main view
378 if (!is_main_view()) {
379 shared_ptr<View> main_tv = dynamic_pointer_cast<View>(session_.main_view());
380 shared_ptr<Signal> main_signal = main_tv->get_signal_by_signalbase(signalbase);
382 signal->restore_settings(main_signal->save_settings());
385 connect(signal->base().get(), SIGNAL(name_changed(const QString&)),
386 this, SLOT(on_signal_name_changed()));
389 void View::remove_signalbase(const shared_ptr<data::SignalBase> signalbase)
391 ViewBase::remove_signalbase(signalbase);
393 shared_ptr<Signal> signal = get_signal_by_signalbase(signalbase);
396 remove_trace(signal);
400 void View::clear_decode_signals()
402 ViewBase::clear_decode_signals();
403 decode_traces_.clear();
406 void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
408 ViewBase::add_decode_signal(signal);
410 shared_ptr<DecodeTrace> d(
411 new DecodeTrace(session_, signal, decode_traces_.size()));
412 decode_traces_.push_back(d);
414 d->set_segment_display_mode(segment_display_mode_);
415 d->set_current_segment(current_segment_);
417 connect(signal.get(), SIGNAL(name_changed(const QString&)),
418 this, SLOT(on_signal_name_changed()));
421 void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
423 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
424 if ((*i)->base() == signal) {
425 decode_traces_.erase(i);
429 ViewBase::remove_decode_signal(signal);
433 void View::remove_trace(shared_ptr<Trace> trace)
435 TraceTreeItemOwner *const owner = trace->owner();
437 owner->remove_child_item(trace);
439 for (auto i = signals_.begin(); i != signals_.end(); i++)
445 if (!header_was_shrunk_)
446 resize_header_to_fit();
454 shared_ptr<Signal> View::get_signal_under_mouse_cursor() const
456 return signal_under_mouse_cursor_;
464 const View* View::view() const
469 Viewport* View::viewport()
474 const Viewport* View::viewport() const
479 QAbstractScrollArea* View::scrollarea() const
484 const Ruler* View::ruler() const
489 void View::save_settings(QSettings &settings) const
491 settings.setValue("scale", scale_);
492 settings.setValue("v_offset",
493 scrollarea_->verticalScrollBar()->sliderPosition());
495 settings.setValue("splitter_state", splitter_->saveState());
496 settings.setValue("segment_display_mode", segment_display_mode_);
498 GlobalSettings::store_timestamp(settings, "offset", offset_);
500 if (custom_zero_offset_set_)
501 GlobalSettings::store_timestamp(settings, "zero_offset", -zero_offset_);
503 settings.remove("zero_offset");
505 for (const shared_ptr<Signal>& signal : signals_) {
506 settings.beginGroup(signal->base()->internal_name());
507 signal->save_settings(settings);
512 void View::restore_settings(QSettings &settings)
514 // Note: It is assumed that this function is only called once,
515 // immediately after restoring a previous session.
517 if (settings.contains("scale"))
518 set_scale(settings.value("scale").toDouble());
520 if (settings.contains("offset")) {
521 // This also updates ruler_offset_
522 set_offset(GlobalSettings::restore_timestamp(settings, "offset"));
525 if (settings.contains("zero_offset"))
526 set_zero_position(GlobalSettings::restore_timestamp(settings, "zero_offset"));
528 if (settings.contains("splitter_state"))
529 splitter_->restoreState(settings.value("splitter_state").toByteArray());
531 if (settings.contains("segment_display_mode"))
532 set_segment_display_mode(
533 (Trace::SegmentDisplayMode)(settings.value("segment_display_mode").toInt()));
535 for (shared_ptr<Signal> signal : signals_) {
536 settings.beginGroup(signal->base()->internal_name());
537 signal->restore_settings(settings);
541 if (settings.contains("v_offset")) {
542 saved_v_offset_ = settings.value("v_offset").toInt();
543 set_v_offset(saved_v_offset_);
544 scroll_needs_defaults_ = false;
545 // Note: see eventFilter() for additional information
548 settings_restored_ = true;
549 suppress_zoom_to_fit_after_acq_ = true;
551 // Update the ruler so that it uses the new scale
552 calculate_tick_spacing();
555 vector< shared_ptr<TimeItem> > View::time_items() const
557 const vector<shared_ptr<Flag>> f(flags());
558 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
561 items.push_back(cursors_);
562 items.push_back(cursors_->first());
563 items.push_back(cursors_->second());
566 for (auto& trigger_marker : trigger_markers_)
567 items.push_back(trigger_marker);
572 double View::scale() const
577 void View::set_scale(double scale)
579 if (scale_ != scale) {
585 void View::set_offset(const pv::util::Timestamp& offset, bool force_update)
587 if ((offset_ != offset) || force_update) {
589 ruler_offset_ = offset_ + zero_offset_;
591 const int w = viewport_->width();
593 const double samplerate = session_.get_samplerate();
594 // Note: sample_num = time * samplerate
595 // Note: samples_per_pixel = samplerate * scale
596 int64_t start_sample = (offset_ * samplerate).convert_to<int64_t>();
597 int64_t end_sample = (offset_ * samplerate).convert_to<int64_t>() +
598 (w * session_.get_samplerate() * scale_);
600 MetadataObject* md_obj =
601 session_.metadata_obj_manager()->find_object_by_type(MetadataObjMainViewRange);
602 md_obj->set_value(MetadataValueStartSample, QVariant((qlonglong)start_sample));
603 md_obj->set_value(MetadataValueEndSample, QVariant((qlonglong)end_sample));
610 const Timestamp& View::offset() const
615 const Timestamp& View::ruler_offset() const
617 return ruler_offset_;
620 void View::set_zero_position(const pv::util::Timestamp& position)
622 zero_offset_ = -position;
623 custom_zero_offset_set_ = true;
625 // Force an immediate update of the offsets
626 set_offset(offset_, true);
630 void View::reset_zero_position()
634 // When enabled, the first trigger for this segment is used as the zero position
635 GlobalSettings settings;
636 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
638 if (trigger_is_zero_time) {
639 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
641 if (triggers.size() > 0)
642 zero_offset_ = triggers.front();
645 custom_zero_offset_set_ = false;
647 // Force an immediate update of the offsets
648 set_offset(offset_, true);
652 pv::util::Timestamp View::zero_offset() const
657 int View::owner_visual_v_offset() const
659 return -scrollarea_->verticalScrollBar()->sliderPosition();
662 void View::set_v_offset(int offset)
664 scrollarea_->verticalScrollBar()->setSliderPosition(offset);
669 void View::set_h_offset(int offset)
671 scrollarea_->horizontalScrollBar()->setSliderPosition(offset);
676 int View::get_h_scrollbar_maximum() const
678 return scrollarea_->horizontalScrollBar()->maximum();
681 unsigned int View::depth() const
686 uint32_t View::current_segment() const
688 return current_segment_;
691 pv::util::SIPrefix View::tick_prefix() const
696 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
698 if (tick_prefix_ != tick_prefix) {
699 tick_prefix_ = tick_prefix;
700 tick_prefix_changed();
704 unsigned int View::tick_precision() const
706 return tick_precision_;
709 void View::set_tick_precision(unsigned tick_precision)
711 if (tick_precision_ != tick_precision) {
712 tick_precision_ = tick_precision;
713 tick_precision_changed();
717 const pv::util::Timestamp& View::tick_period() const
722 unsigned int View::minor_tick_count() const
724 return minor_tick_count_;
727 void View::set_tick_period(const pv::util::Timestamp& tick_period)
729 if (tick_period_ != tick_period) {
730 tick_period_ = tick_period;
731 tick_period_changed();
735 TimeUnit View::time_unit() const
740 void View::set_time_unit(pv::util::TimeUnit time_unit)
742 if (time_unit_ != time_unit) {
743 time_unit_ = time_unit;
748 void View::set_current_segment(uint32_t segment_id)
750 current_segment_ = segment_id;
752 for (const shared_ptr<Signal>& signal : signals_)
753 signal->set_current_segment(current_segment_);
755 for (shared_ptr<DecodeTrace>& dt : decode_traces_)
756 dt->set_current_segment(current_segment_);
759 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
761 trigger_markers_.clear();
762 for (util::Timestamp timestamp : triggers)
763 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, timestamp));
765 if (!custom_zero_offset_set_)
766 reset_zero_position();
770 segment_changed(segment_id);
773 bool View::segment_is_selectable() const
775 return segment_selectable_;
778 Trace::SegmentDisplayMode View::segment_display_mode() const
780 return segment_display_mode_;
783 void View::set_segment_display_mode(Trace::SegmentDisplayMode mode)
785 segment_display_mode_ = mode;
787 for (const shared_ptr<Signal>& signal : signals_)
788 signal->set_segment_display_mode(mode);
790 uint32_t last_segment = session_.get_segment_count() - 1;
793 case Trace::ShowLastSegmentOnly:
794 if (current_segment_ != last_segment)
795 set_current_segment(last_segment);
798 case Trace::ShowLastCompleteSegmentOnly:
799 // Do nothing if we only have one segment so far
800 if (last_segment > 0) {
801 // If the last segment isn't complete, the previous one must be
802 uint32_t segment_id =
803 (session_.all_segments_complete(last_segment)) ?
804 last_segment : last_segment - 1;
806 if (current_segment_ != segment_id)
807 set_current_segment(segment_id);
811 case Trace::ShowSingleSegmentOnly:
812 case Trace::ShowAllSegments:
813 case Trace::ShowAccumulatedIntensity:
815 // Current segment remains as-is
819 segment_selectable_ = true;
821 if ((mode == Trace::ShowAllSegments) || (mode == Trace::ShowAccumulatedIntensity))
822 segment_selectable_ = false;
826 segment_display_mode_changed((int)mode, segment_selectable_);
829 void View::zoom(double steps)
831 zoom(steps, viewport_->width() / 2);
834 void View::zoom(double steps, int offset)
836 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
839 void View::zoom_fit(bool gui_state)
841 // Act as one-shot when stopped, toggle along with the GUI otherwise
842 if (session_.get_capture_state() == Session::Stopped) {
843 always_zoom_to_fit_ = false;
844 always_zoom_to_fit_changed(false);
846 always_zoom_to_fit_ = gui_state;
847 always_zoom_to_fit_changed(gui_state);
850 const pair<Timestamp, Timestamp> extents = get_time_extents();
851 const Timestamp delta = extents.second - extents.first;
852 if (delta < Timestamp("1e-12"))
856 const int w = viewport_->width();
860 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
861 set_scale_offset(scale.convert_to<double>(), extents.first);
864 void View::focus_on_range(uint64_t start_sample, uint64_t end_sample)
867 const int w = viewport_->width();
871 const double samplerate = session_.get_samplerate();
873 const uint64_t sample_delta = (end_sample - start_sample);
875 // Note: We add 20% margin on the left and 5% on the right
876 const Timestamp delta = (sample_delta * 1.25) / samplerate;
878 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
879 const Timestamp offset = (start_sample - sample_delta * 0.20) / samplerate;
881 set_scale_offset(scale.convert_to<double>(), offset);
884 void View::set_scale_offset(double scale, const Timestamp& offset)
886 // Disable sticky scrolling / always zoom to fit when acquisition runs
887 // and user drags the viewport
888 if ((scale_ == scale) && (offset_ != offset) &&
889 (session_.get_capture_state() == Session::Running)) {
891 if (sticky_scrolling_) {
892 sticky_scrolling_ = false;
893 sticky_scrolling_changed(false);
896 if (always_zoom_to_fit_) {
897 always_zoom_to_fit_ = false;
898 always_zoom_to_fit_changed(false);
905 calculate_tick_spacing();
912 vector< shared_ptr<SignalData> > View::get_visible_data() const
914 // Make a set of all the visible data objects
915 vector< shared_ptr<SignalData> > visible_data;
916 for (const shared_ptr<Signal>& sig : signals_)
918 visible_data.push_back(sig->data());
923 pair<Timestamp, Timestamp> View::get_time_extents() const
925 boost::optional<Timestamp> left_time, right_time;
927 vector< shared_ptr<SignalData> > data;
928 if (signals_.size() == 0)
929 return make_pair(0, 0);
931 data.push_back(signals_.front()->data());
933 for (const shared_ptr<SignalData>& d : data) {
934 const vector< shared_ptr<Segment> > segments = d->segments();
935 for (const shared_ptr<Segment>& s : segments) {
936 double samplerate = s->samplerate();
937 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
939 const Timestamp start_time = s->start_time();
940 left_time = left_time ?
941 min(*left_time, start_time) :
943 right_time = right_time ?
944 max(*right_time, start_time + d->max_sample_count() / samplerate) :
945 start_time + d->max_sample_count() / samplerate;
949 if (!left_time || !right_time)
950 return make_pair(0, 0);
952 assert(*left_time <= *right_time);
953 return make_pair(*left_time, *right_time);
956 bool View::colored_bg() const
961 bool View::cursors_shown() const
963 return show_cursors_;
966 void View::show_cursors(bool show)
968 if (show_cursors_ != show) {
969 show_cursors_ = show;
971 cursor_state_changed(show);
977 void View::set_cursors(pv::util::Timestamp& first, pv::util::Timestamp& second)
981 cursors_->first()->set_time(first);
982 cursors_->second()->set_time(second);
988 void View::center_cursors()
992 const double time_width = scale_ * viewport_->width();
993 cursors_->first()->set_time(offset_ + time_width * 0.4);
994 cursors_->second()->set_time(offset_ + time_width * 0.6);
1000 shared_ptr<CursorPair> View::cursors() const
1005 shared_ptr<Flag> View::add_flag(const Timestamp& time)
1007 shared_ptr<Flag> flag =
1008 make_shared<Flag>(*this, time, QString("%1").arg(next_flag_text_));
1009 flags_.push_back(flag);
1011 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
1012 (next_flag_text_ + 1);
1014 time_item_appearance_changed(true, true);
1018 void View::remove_flag(shared_ptr<Flag> flag)
1020 flags_.remove(flag);
1021 time_item_appearance_changed(true, true);
1024 vector< shared_ptr<Flag> > View::flags() const
1026 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
1027 stable_sort(flags.begin(), flags.end(),
1028 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
1029 return a->time() < b->time();
1035 const QPoint& View::hover_point() const
1037 return hover_point_;
1040 const QWidget* View::hover_widget() const
1042 return hover_widget_;
1045 int64_t View::get_nearest_level_change(const QPoint &p)
1047 // Is snapping disabled?
1048 if (snap_distance_ == 0)
1052 entry_t(shared_ptr<Signal> s) :
1053 signal(s), delta(numeric_limits<int64_t>::max()), sample(-1), is_dense(false) {}
1054 shared_ptr<Signal> signal;
1060 vector<entry_t> list;
1062 // Create list of signals to consider
1063 if (signal_under_mouse_cursor_)
1064 list.emplace_back(signal_under_mouse_cursor_);
1066 for (shared_ptr<Signal> s : signals_) {
1070 list.emplace_back(s);
1073 // Get data for listed signals
1074 for (entry_t &e : list) {
1075 // Calculate sample number from cursor position
1076 const double samples_per_pixel = e.signal->base()->get_samplerate() * scale();
1077 const int64_t x_offset = offset().convert_to<double>() / scale();
1078 const int64_t sample_num = max(((x_offset + p.x()) * samples_per_pixel), 0.0);
1080 vector<data::LogicSegment::EdgePair> edges =
1081 e.signal->get_nearest_level_changes(sample_num);
1087 const int64_t first_sample_delta = abs(sample_num - edges.front().first);
1088 const int64_t first_delta = first_sample_delta / samples_per_pixel;
1089 e.delta = first_delta;
1090 e.sample = edges.front().first;
1092 // Check second edge if available
1093 if (edges.size() == 2) {
1094 // Note: -1 because this is usually the right edge and sample points are left-aligned
1095 const int64_t second_sample_delta = abs(sample_num - edges.back().first - 1);
1096 const int64_t second_delta = second_sample_delta / samples_per_pixel;
1098 // If both edges are too close, we mark this signal as being dense
1099 if ((first_delta + second_delta) <= snap_distance_)
1102 if (second_delta < first_delta) {
1103 e.delta = second_delta;
1104 e.sample = edges.back().first;
1109 // Look for the best match: non-dense first, then dense
1110 entry_t *match = nullptr;
1112 for (entry_t &e : list) {
1113 if (e.delta > snap_distance_ || e.is_dense)
1117 if (e.delta < match->delta)
1124 for (entry_t &e : list) {
1129 if (e.delta < match->delta)
1137 // Somewhat ugly hack to make TimeItem::drag_by() work
1138 signal_under_mouse_cursor_ = match->signal;
1140 return match->sample;
1146 void View::restack_all_trace_tree_items()
1148 // Make a list of owners that is sorted from deepest first
1149 const vector<shared_ptr<TraceTreeItem>> items(
1150 list_by_type<TraceTreeItem>());
1151 set< TraceTreeItemOwner* > owners;
1152 for (const auto &r : items)
1153 owners.insert(r->owner());
1154 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
1155 sort(sorted_owners.begin(), sorted_owners.end(),
1156 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
1157 return a->depth() > b->depth(); });
1159 // Restack the items recursively
1160 for (auto &o : sorted_owners)
1163 // Animate the items to their destination
1164 for (const auto &i : items)
1165 i->animate_to_layout_v_offset();
1168 int View::header_width() const
1170 return header_->extended_size_hint().width();
1173 void View::on_setting_changed(const QString &key, const QVariant &value)
1175 GlobalSettings settings;
1177 if (key == GlobalSettings::Key_View_ColoredBG) {
1178 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
1179 viewport_->update();
1182 if ((key == GlobalSettings::Key_View_ShowSamplingPoints) ||
1183 (key == GlobalSettings::Key_View_ShowAnalogMinorGrid))
1184 viewport_->update();
1186 if (key == GlobalSettings::Key_View_TriggerIsZeroTime)
1187 on_settingViewTriggerIsZeroTime_changed(value);
1189 if (key == GlobalSettings::Key_View_SnapDistance)
1190 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
1193 void View::trigger_event(int segment_id, util::Timestamp location)
1195 // TODO This doesn't work if we're showing multiple segments at once
1196 if ((uint32_t)segment_id != current_segment_)
1199 if (!custom_zero_offset_set_)
1200 reset_zero_position();
1202 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
1205 void View::get_scroll_layout(double &length, Timestamp &offset) const
1207 const pair<Timestamp, Timestamp> extents = get_time_extents();
1208 length = ((extents.second - extents.first) / scale_).convert_to<double>();
1209 offset = offset_ / scale_;
1212 void View::set_zoom(double scale, int offset)
1214 // Reset the "always zoom to fit" feature as the user changed the zoom
1215 always_zoom_to_fit_ = false;
1216 always_zoom_to_fit_changed(false);
1218 const Timestamp cursor_offset = offset_ + scale_ * offset;
1219 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
1220 const Timestamp new_offset = cursor_offset - new_scale * offset;
1221 set_scale_offset(new_scale.convert_to<double>(), new_offset);
1224 void View::calculate_tick_spacing()
1226 const double SpacingIncrement = 10.0f;
1227 const double MinValueSpacing = 40.0f;
1229 // Figure out the highest numeric value visible on a label
1230 const QSize areaSize = viewport_->size();
1231 const Timestamp max_time = max(fabs(offset_),
1232 fabs(offset_ + scale_ * areaSize.width()));
1234 double min_width = SpacingIncrement;
1235 double label_width, tick_period_width;
1237 QFontMetrics m(QApplication::font());
1239 // Copies of the member variables with the same name, used in the calculation
1240 // and written back afterwards, so that we don't emit signals all the time
1241 // during the calculation.
1242 pv::util::Timestamp tick_period = tick_period_;
1243 pv::util::SIPrefix tick_prefix = tick_prefix_;
1244 unsigned tick_precision = tick_precision_;
1247 const double min_period = scale_ * min_width;
1249 const int order = (int)floorf(log10f(min_period));
1250 const pv::util::Timestamp order_decimal =
1251 pow(pv::util::Timestamp(10), order);
1253 // Allow for a margin of error so that a scale unit of 1 can be used.
1254 // Otherwise, for a SU of 1 the tick period will almost always be below
1255 // the min_period by a small amount - and thus skipped in favor of 2.
1256 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
1257 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
1258 double tp_with_margin;
1259 unsigned int unit = 0;
1262 tp_with_margin = order_decimal.convert_to<double>() *
1263 (ScaleUnits[unit++] + tp_margin);
1264 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
1266 minor_tick_count_ = (unit == 2) ? 4 : 5;
1267 tick_period = order_decimal * ScaleUnits[unit - 1];
1268 tick_prefix = static_cast<pv::util::SIPrefix>(
1269 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
1271 // Precision is the number of fractional digits required, not
1272 // taking the prefix into account (and it must never be negative)
1273 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
1275 tick_period_width = (tick_period / scale_).convert_to<double>();
1277 const QString label_text = Ruler::format_time_with_distance(
1278 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
1280 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
1281 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
1284 min_width += SpacingIncrement;
1285 } while (tick_period_width < label_width);
1287 set_tick_period(tick_period);
1288 set_tick_prefix(tick_prefix);
1289 set_tick_precision(tick_precision);
1292 void View::adjust_top_margin()
1296 const QSize areaSize = viewport_->size();
1298 const pair<int, int> extents = v_extents();
1299 const int top_margin = owner_visual_v_offset() + extents.first;
1300 const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second;
1302 // Do we have empty space at the top while the last trace goes out of screen?
1303 if ((top_margin > 0) && (trace_bottom > areaSize.height())) {
1304 const int trace_height = extents.second - extents.first;
1306 // Center everything vertically if there is enough space
1307 if (areaSize.height() >= trace_height)
1308 set_v_offset(extents.first -
1309 ((areaSize.height() - trace_height) / 2));
1311 // Remove the top margin to make as many traces fit on screen as possible
1312 set_v_offset(extents.first);
1316 void View::update_scroll()
1319 QScrollBar *hscrollbar = scrollarea_->horizontalScrollBar();
1320 QScrollBar *vscrollbar = scrollarea_->verticalScrollBar();
1322 const QSize areaSize = viewport_->size();
1324 // Set the horizontal scroll bar
1327 get_scroll_layout(length, offset);
1328 length = max(length - areaSize.width(), 0.0);
1330 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
1332 hscrollbar->setPageStep(areaSize.width() / 2);
1333 hscrollbar->setSingleStep(major_tick_distance);
1335 updating_scroll_ = true;
1337 if (length < MaxScrollValue) {
1338 hscrollbar->setRange(0, length);
1339 hscrollbar->setSliderPosition(offset.convert_to<double>());
1341 hscrollbar->setRange(0, MaxScrollValue);
1342 hscrollbar->setSliderPosition(
1343 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
1346 updating_scroll_ = false;
1348 // Set the vertical scrollbar
1349 vscrollbar->setPageStep(areaSize.height());
1350 vscrollbar->setSingleStep(areaSize.height() / 8);
1352 const pair<int, int> extents = v_extents();
1354 // Don't change the scrollbar range if there are no traces
1355 if (extents.first != extents.second) {
1356 int top_margin = ViewScrollMargin;
1357 int btm_margin = ViewScrollMargin;
1359 vscrollbar->setRange(extents.first - areaSize.height() + top_margin,
1360 extents.second - btm_margin);
1363 if (scroll_needs_defaults_) {
1364 set_scroll_default();
1365 scroll_needs_defaults_ = false;
1369 void View::reset_scroll()
1371 scrollarea_->verticalScrollBar()->setRange(0, 0);
1374 void View::set_scroll_default()
1378 const QSize areaSize = viewport_->size();
1380 const pair<int, int> extents = v_extents();
1381 const int trace_height = extents.second - extents.first;
1383 // Do all traces fit in the view?
1384 if (areaSize.height() >= trace_height)
1385 // Center all traces vertically
1386 set_v_offset(extents.first -
1387 ((areaSize.height() - trace_height) / 2));
1389 // Put the first trace at the top, letting the bottom ones overflow
1390 set_v_offset(extents.first);
1393 void View::determine_if_header_was_shrunk()
1395 const int header_pane_width =
1396 splitter_->sizes().front(); // clazy:exclude=detaching-temporary
1398 // Allow for a slight margin of error so that we also accept
1399 // slight differences when e.g. a label name change increased
1400 // the overall width
1401 header_was_shrunk_ = (header_pane_width < (header_width() - 10));
1404 void View::resize_header_to_fit()
1406 // Setting the maximum width of the header widget doesn't work as
1407 // expected because the splitter would allow the user to make the
1408 // pane wider than that, creating empty space as a result.
1409 // To make this work, we stricly enforce the maximum width by
1410 // expanding the header unless the user shrunk it on purpose.
1411 // As we're then setting the width of the header pane, we set the
1412 // splitter to the maximum allowed position.
1414 int splitter_area_width = 0;
1415 for (int w : splitter_->sizes()) // clazy:exclude=range-loop
1416 splitter_area_width += w;
1418 // Make sure the header has enough horizontal space to show all labels fully
1419 QList<int> pane_sizes;
1420 pane_sizes.push_back(header_->extended_size_hint().width());
1421 pane_sizes.push_back(splitter_area_width - header_->extended_size_hint().width());
1422 splitter_->setSizes(pane_sizes);
1425 void View::update_layout()
1430 TraceTreeItemOwner* View::find_prevalent_trace_group(
1431 const shared_ptr<sigrok::ChannelGroup> &group,
1432 const map<shared_ptr<data::SignalBase>, shared_ptr<Signal> > &signal_map)
1436 set<TraceTreeItemOwner*> owners;
1437 vector<TraceTreeItemOwner*> owner_list;
1439 // Make a set and a list of all the owners
1440 for (const auto& channel : group->channels()) {
1441 for (auto& entry : signal_map) {
1442 if (entry.first->channel() == channel) {
1443 TraceTreeItemOwner *const o = (entry.second)->owner();
1444 owner_list.push_back(o);
1450 // Iterate through the list of owners, and find the most prevalent
1451 size_t max_prevalence = 0;
1452 TraceTreeItemOwner *prevalent_owner = nullptr;
1453 for (TraceTreeItemOwner *owner : owners) {
1454 const size_t prevalence = count_if(
1455 owner_list.begin(), owner_list.end(),
1456 [&](TraceTreeItemOwner *o) { return o == owner; });
1457 if (prevalence > max_prevalence) {
1458 max_prevalence = prevalence;
1459 prevalent_owner = owner;
1463 return prevalent_owner;
1466 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
1467 const vector< shared_ptr<sigrok::Channel> > &channels,
1468 const map<shared_ptr<data::SignalBase>, shared_ptr<Signal> > &signal_map,
1469 set< shared_ptr<Trace> > &add_list)
1471 vector< shared_ptr<Trace> > filtered_traces;
1473 for (const auto& channel : channels) {
1474 for (auto& entry : signal_map) {
1475 if (entry.first->channel() == channel) {
1476 shared_ptr<Trace> trace = entry.second;
1477 const auto list_iter = add_list.find(trace);
1478 if (list_iter == add_list.end())
1481 filtered_traces.push_back(trace);
1482 add_list.erase(list_iter);
1487 return filtered_traces;
1490 void View::determine_time_unit()
1492 // Check whether we know the sample rate and hence can use time as the unit
1493 if (time_unit_ == util::TimeUnit::Samples) {
1494 // Check all signals but...
1495 for (const shared_ptr<Signal>& signal : signals_) {
1496 const shared_ptr<SignalData> data = signal->data();
1498 // ...only check first segment of each
1499 const vector< shared_ptr<Segment> > segments = data->segments();
1500 if (!segments.empty())
1501 if (segments[0]->samplerate()) {
1502 set_time_unit(util::TimeUnit::Time);
1509 bool View::eventFilter(QObject *object, QEvent *event)
1511 const QEvent::Type type = event->type();
1513 if (type == QEvent::MouseMove) {
1516 hover_widget_ = qobject_cast<QWidget*>(object);
1518 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1519 if (object == viewport_)
1520 hover_point_ = mouse_event->pos();
1521 else if (object == ruler_)
1522 hover_point_ = mouse_event->pos();
1523 else if (object == header_)
1524 hover_point_ = QPoint(0, mouse_event->y());
1526 hover_point_ = QPoint(-1, -1);
1528 update_hover_point();
1530 if (grabbed_widget_) {
1531 int64_t nearest = get_nearest_level_change(hover_point_);
1532 pv::util::Timestamp mouse_time = offset_ + hover_point_.x() * scale_;
1534 if (nearest == -1) {
1535 grabbed_widget_->set_time(mouse_time);
1537 grabbed_widget_->set_time(nearest / get_signal_under_mouse_cursor()->base()->get_samplerate());
1541 } else if (type == QEvent::MouseButtonPress) {
1542 grabbed_widget_ = nullptr;
1544 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1545 if ((object == viewport_) && (mouse_event->button() & Qt::LeftButton)) {
1546 // Send event to 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->mouse_left_press_event(mouse_event);
1552 } else if (type == QEvent::Leave) {
1553 hover_point_ = QPoint(-1, -1);
1554 update_hover_point();
1555 } else if (type == QEvent::Show) {
1557 // This is somewhat of a hack, unfortunately. We cannot use
1558 // set_v_offset() from within restore_settings() as the view
1559 // at that point is neither visible nor properly sized.
1560 // This is the least intrusive workaround I could come up
1561 // with: set the vertical offset (or scroll defaults) when
1562 // the view is shown, which happens after all widgets were
1563 // resized to their final sizes.
1566 if (settings_restored_)
1567 determine_if_header_was_shrunk();
1569 resize_header_to_fit();
1571 if (scroll_needs_defaults_) {
1572 set_scroll_default();
1573 scroll_needs_defaults_ = false;
1576 if (saved_v_offset_) {
1577 set_v_offset(saved_v_offset_);
1578 saved_v_offset_ = 0;
1582 return QObject::eventFilter(object, event);
1585 void View::contextMenuEvent(QContextMenuEvent *event)
1587 QPoint pos = event->pos() - QPoint(0, ruler_->sizeHint().height());
1589 const shared_ptr<ViewItem> r = viewport_->get_mouse_over_item(pos);
1593 QMenu *menu = r->create_view_context_menu(this, pos);
1595 menu->popup(event->globalPos());
1598 void View::resizeEvent(QResizeEvent* event)
1600 // Only adjust the top margin if we shrunk vertically
1601 if (event->size().height() < event->oldSize().height())
1602 adjust_top_margin();
1607 void View::update_hover_point()
1609 // Determine signal that the mouse cursor is hovering over
1610 signal_under_mouse_cursor_.reset();
1611 if (hover_widget_ == this) {
1612 for (const shared_ptr<Signal>& s : signals_) {
1613 const pair<int, int> extents = s->v_extents();
1614 const int top = s->get_visual_y() + extents.first;
1615 const int btm = s->get_visual_y() + extents.second;
1616 if ((hover_point_.y() >= top) && (hover_point_.y() <= btm)
1617 && s->base()->enabled())
1618 signal_under_mouse_cursor_ = s;
1622 // Update all trace tree items
1623 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1624 list_by_type<TraceTreeItem>());
1625 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1626 r->hover_point_changed(hover_point_);
1628 // Notify this view's listeners
1629 hover_point_changed(hover_widget_, hover_point_);
1631 // Hover point is -1 when invalid and 0 for the header
1632 if (hover_point_.x() > 0) {
1633 // Notify global listeners
1634 pv::util::Timestamp mouse_time = offset_ + hover_point_.x() * scale_;
1635 int64_t sample_num = (mouse_time * session_.get_samplerate()).convert_to<int64_t>();
1637 MetadataObject* md_obj =
1638 session_.metadata_obj_manager()->find_object_by_type(MetadataObjMousePos);
1639 md_obj->set_value(MetadataValueStartSample, QVariant((qlonglong)sample_num));
1643 void View::row_item_appearance_changed(bool label, bool content)
1648 viewport_->update();
1651 void View::time_item_appearance_changed(bool label, bool content)
1656 // Make sure the header pane width is updated, too
1661 viewport_->update();
1664 void View::extents_changed(bool horz, bool vert)
1667 (horz ? TraceTreeItemHExtentsChanged : 0) |
1668 (vert ? TraceTreeItemVExtentsChanged : 0);
1670 if (!lazy_event_handler_.isActive())
1671 lazy_event_handler_.start();
1674 void View::on_signal_name_changed()
1676 if (!header_was_shrunk_)
1677 resize_header_to_fit();
1680 void View::on_splitter_moved()
1682 // The header can only shrink when the splitter is moved manually
1683 determine_if_header_was_shrunk();
1685 if (!header_was_shrunk_)
1686 resize_header_to_fit();
1689 void View::on_zoom_in_shortcut_triggered()
1694 void View::on_zoom_out_shortcut_triggered()
1699 void View::on_scroll_to_start_shortcut_triggered()
1704 void View::on_scroll_to_end_shortcut_triggered()
1706 set_h_offset(get_h_scrollbar_maximum());
1709 void View::h_scroll_value_changed(int value)
1711 if (updating_scroll_)
1714 // Disable sticky scrolling when user moves the horizontal scroll bar
1715 // during a running acquisition
1716 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1717 sticky_scrolling_ = false;
1718 sticky_scrolling_changed(false);
1721 const int range = scrollarea_->horizontalScrollBar()->maximum();
1722 if (range < MaxScrollValue)
1723 set_offset(scale_ * value);
1727 get_scroll_layout(length, offset);
1728 set_offset(scale_ * length * value / MaxScrollValue);
1732 viewport_->update();
1735 void View::v_scroll_value_changed()
1738 viewport_->update();
1741 void View::on_grab_ruler(int ruler_id)
1743 if (!cursors_shown()) {
1748 // Release the grabbed widget if its trigger hotkey was pressed twice
1750 grabbed_widget_ = (grabbed_widget_ == cursors_->first().get()) ?
1751 nullptr : cursors_->first().get();
1753 grabbed_widget_ = (grabbed_widget_ == cursors_->second().get()) ?
1754 nullptr : cursors_->second().get();
1756 if (grabbed_widget_)
1757 grabbed_widget_->set_time(ruler_->get_absolute_time_from_x_pos(
1758 mapFromGlobal(QCursor::pos()).x() - header_width()));
1761 void View::signals_changed()
1763 using sigrok::Channel;
1765 lock_guard<mutex> lock(signal_mutex_);
1767 vector< shared_ptr<Channel> > channels;
1768 shared_ptr<sigrok::Device> sr_dev;
1769 bool signals_added_or_removed = false;
1771 // Do we need to set the vertical scrollbar to its default position later?
1772 // We do if there are no traces, i.e. the scroll bar has no range set
1773 bool reset_scrollbar =
1774 (scrollarea_->verticalScrollBar()->minimum() ==
1775 scrollarea_->verticalScrollBar()->maximum());
1777 if (!session_.device()) {
1781 sr_dev = session_.device()->device();
1783 channels = sr_dev->channels();
1786 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1788 // Make a list of traces that are being added, and a list of traces
1789 // that are being removed. The set_difference() algorithms require
1790 // both sets to be in the exact same order, which means that PD signals
1791 // must always be last as they interrupt the sort order otherwise
1792 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1793 const set<shared_ptr<Trace>> prev_traces(
1794 prev_trace_list.begin(), prev_trace_list.end());
1796 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1798 #ifdef ENABLE_DECODE
1799 traces.insert(decode_traces_.begin(), decode_traces_.end());
1801 set< shared_ptr<Trace> > add_traces;
1802 set_difference(traces.begin(), traces.end(),
1803 prev_traces.begin(), prev_traces.end(),
1804 inserter(add_traces, add_traces.begin()));
1806 set< shared_ptr<Trace> > remove_traces;
1807 set_difference(prev_traces.begin(), prev_traces.end(),
1808 traces.begin(), traces.end(),
1809 inserter(remove_traces, remove_traces.begin()));
1811 // Make a look-up table of sigrok Channels to pulseview Signals
1812 map<shared_ptr<data::SignalBase>, shared_ptr<Signal> > signal_map;
1813 for (const shared_ptr<Signal>& sig : signals_)
1814 signal_map[sig->base()] = sig;
1816 // Populate channel groups
1818 for (auto& entry : sr_dev->channel_groups()) {
1819 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1821 if (group->channels().size() <= 1)
1824 // Find best trace group to add to
1825 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1828 // If there is no trace group, create one
1829 shared_ptr<TraceGroup> new_trace_group;
1831 new_trace_group.reset(new TraceGroup());
1832 owner = new_trace_group.get();
1835 // Extract traces for the trace group, removing them from
1837 const vector< shared_ptr<Trace> > new_traces_in_group =
1838 extract_new_traces_for_channels(group->channels(),
1839 signal_map, add_traces);
1841 // Add the traces to the group
1842 const pair<int, int> prev_v_extents = owner->v_extents();
1843 int offset = prev_v_extents.second - prev_v_extents.first;
1844 for (const shared_ptr<Trace>& trace : new_traces_in_group) {
1846 owner->add_child_item(trace);
1848 const pair<int, int> extents = trace->v_extents();
1849 if (trace->enabled())
1850 offset += -extents.first;
1851 trace->force_to_v_offset(offset);
1852 if (trace->enabled())
1853 offset += extents.second;
1856 if (new_trace_group) {
1857 // Assign proper vertical offsets to each channel in the group
1858 new_trace_group->restack_items();
1860 // If this is a new group, enqueue it in the new top level
1862 if (!new_traces_in_group.empty())
1863 new_top_level_items.push_back(new_trace_group);
1867 // Enqueue the remaining logic channels in a group
1868 vector< shared_ptr<Channel> > logic_channels;
1869 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1870 [](const shared_ptr<Channel>& c) {
1871 return c->type() == sigrok::ChannelType::LOGIC; });
1873 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1874 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1876 if (non_grouped_logic_signals.size() > 0) {
1877 const shared_ptr<TraceGroup> non_grouped_trace_group(
1878 make_shared<TraceGroup>());
1879 for (const shared_ptr<Trace>& trace : non_grouped_logic_signals)
1880 non_grouped_trace_group->add_child_item(trace);
1882 non_grouped_trace_group->restack_items();
1883 new_top_level_items.push_back(non_grouped_trace_group);
1886 // Enqueue the remaining channels as free ungrouped traces
1887 const vector< shared_ptr<Trace> > new_top_level_signals =
1888 extract_new_traces_for_channels(channels, signal_map, add_traces);
1889 new_top_level_items.insert(new_top_level_items.end(),
1890 new_top_level_signals.begin(), new_top_level_signals.end());
1892 // Enqueue any remaining traces i.e. decode traces
1893 new_top_level_items.insert(new_top_level_items.end(),
1894 add_traces.begin(), add_traces.end());
1896 // Remove any removed traces
1897 for (const shared_ptr<Trace>& trace : remove_traces) {
1898 TraceTreeItemOwner *const owner = trace->owner();
1900 owner->remove_child_item(trace);
1901 signals_added_or_removed = true;
1904 // Remove any empty trace groups
1905 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1906 if (group->child_items().size() == 0) {
1907 remove_child_item(group);
1911 // Add and position the pending top levels items
1912 int offset = v_extents().second;
1913 for (shared_ptr<TraceTreeItem> item : new_top_level_items) {
1914 // items may already have gained an owner when they were added to a group above
1918 add_child_item(item);
1920 // Position the item after the last item or at the top if there is none
1921 const pair<int, int> extents = item->v_extents();
1923 if (item->enabled())
1924 offset += -extents.first;
1926 item->force_to_v_offset(offset);
1928 if (item->enabled())
1929 offset += extents.second;
1930 signals_added_or_removed = true;
1934 if (signals_added_or_removed && !header_was_shrunk_)
1935 resize_header_to_fit();
1940 viewport_->update();
1942 if (reset_scrollbar)
1943 set_scroll_default();
1946 void View::capture_state_updated(int state)
1948 GlobalSettings settings;
1950 if (state == Session::Running) {
1951 set_time_unit(util::TimeUnit::Samples);
1953 trigger_markers_.clear();
1954 if (!custom_zero_offset_set_)
1955 set_zero_position(0);
1957 scale_at_acq_start_ = scale_;
1958 offset_at_acq_start_ = offset_;
1960 // Activate "always zoom to fit" if the setting is enabled and we're
1961 // the main view of this session (other trace views may be used for
1962 // zooming and we don't want to mess them up)
1963 bool state = settings.value(GlobalSettings::Key_View_ZoomToFitDuringAcq).toBool();
1964 if (is_main_view_ && state) {
1965 always_zoom_to_fit_ = true;
1966 always_zoom_to_fit_changed(always_zoom_to_fit_);
1969 // Enable sticky scrolling if the setting is enabled
1970 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
1972 // Reset all traces to segment 0
1973 current_segment_ = 0;
1974 set_current_segment(current_segment_);
1977 if (state == Session::Stopped) {
1978 // After acquisition has stopped we need to re-calculate the ticks once
1979 // as it's otherwise done when the user pans or zooms, which is too late
1980 calculate_tick_spacing();
1982 // Reset "always zoom to fit", the acquisition has stopped
1983 if (always_zoom_to_fit_) {
1984 // Perform a final zoom-to-fit before disabling
1985 zoom_fit(always_zoom_to_fit_);
1986 always_zoom_to_fit_ = false;
1987 always_zoom_to_fit_changed(always_zoom_to_fit_);
1990 bool zoom_to_fit_after_acq =
1991 settings.value(GlobalSettings::Key_View_ZoomToFitAfterAcq).toBool();
1993 // Only perform zoom-to-fit if the user hasn't altered the viewport and
1994 // we didn't restore settings in the meanwhile
1995 if (zoom_to_fit_after_acq &&
1996 !suppress_zoom_to_fit_after_acq_ &&
1997 (scale_ == scale_at_acq_start_) &&
1998 (offset_ == offset_at_acq_start_))
1999 zoom_fit(false); // We're stopped, so the GUI state doesn't matter
2001 suppress_zoom_to_fit_after_acq_ = false;
2005 void View::on_new_segment(int new_segment_id)
2007 on_segment_changed(new_segment_id);
2010 void View::on_segment_completed(int segment_id)
2012 on_segment_changed(segment_id);
2015 void View::on_segment_changed(int segment)
2017 switch (segment_display_mode_) {
2018 case Trace::ShowLastSegmentOnly:
2019 case Trace::ShowSingleSegmentOnly:
2020 set_current_segment(segment);
2023 case Trace::ShowLastCompleteSegmentOnly:
2024 // Only update if all segments are complete
2025 if (session_.all_segments_complete(segment))
2026 set_current_segment(segment);
2029 case Trace::ShowAllSegments:
2030 case Trace::ShowAccumulatedIntensity:
2036 void View::on_settingViewTriggerIsZeroTime_changed(const QVariant new_value)
2040 if (!custom_zero_offset_set_)
2041 reset_zero_position();
2044 void View::perform_delayed_view_update()
2046 if (always_zoom_to_fit_) {
2048 } else if (sticky_scrolling_) {
2049 // Make right side of the view sticky
2052 get_scroll_layout(length, offset);
2054 const QSize areaSize = viewport_->size();
2055 length = max(length - areaSize.width(), 0.0);
2057 set_offset(scale_ * length);
2060 determine_time_unit();
2063 viewport_->update();
2066 void View::process_sticky_events()
2068 if (sticky_events_ & TraceTreeItemHExtentsChanged)
2070 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
2071 restack_all_trace_tree_items();
2075 // Clear the sticky events
2079 } // namespace trace
2080 } // namespace views