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>
46 #include "pv/globalsettings.hpp"
47 #include "pv/metadata_obj.hpp"
48 #include "pv/session.hpp"
49 #include "pv/util.hpp"
50 #include "pv/data/logic.hpp"
51 #include "pv/data/logicsegment.hpp"
52 #include "pv/data/signalbase.hpp"
53 #include "pv/devices/device.hpp"
54 #include "pv/views/trace/mathsignal.hpp"
55 #include "pv/views/trace/analogsignal.hpp"
56 #include "pv/views/trace/header.hpp"
57 #include "pv/views/trace/logicsignal.hpp"
58 #include "pv/views/trace/ruler.hpp"
59 #include "pv/views/trace/signal.hpp"
60 #include "pv/views/trace/tracegroup.hpp"
61 #include "pv/views/trace/triggermarker.hpp"
62 #include "pv/views/trace/viewport.hpp"
65 #include "pv/views/trace/decodetrace.hpp"
68 using pv::data::SignalBase;
69 using pv::data::SignalData;
70 using pv::data::Segment;
71 using pv::util::TimeUnit;
72 using pv::util::Timestamp;
74 using std::back_inserter;
78 using std::lock_guard;
81 using std::make_shared;
83 using std::numeric_limits;
86 using std::set_difference;
87 using std::shared_ptr;
94 const Timestamp View::MaxScale("1e9");
95 const Timestamp View::MinScale("1e-12");
97 const int View::MaxScrollValue = INT_MAX / 2;
99 /* Area at the top and bottom of the view that can't be scrolled out of sight */
100 const int View::ViewScrollMargin = 50;
102 const int View::ScaleUnits[3] = {1, 2, 5};
104 CustomScrollArea::CustomScrollArea(QWidget *parent) :
105 QAbstractScrollArea(parent)
109 bool CustomScrollArea::viewportEvent(QEvent *event)
111 switch (event->type()) {
113 case QEvent::MouseButtonPress:
114 case QEvent::MouseButtonRelease:
115 case QEvent::MouseButtonDblClick:
116 case QEvent::MouseMove:
118 case QEvent::TouchBegin:
119 case QEvent::TouchUpdate:
120 case QEvent::TouchEnd:
123 return QAbstractScrollArea::viewportEvent(event);
127 View::View(Session &session, bool is_main_view, QMainWindow *parent) :
128 ViewBase(session, is_main_view, parent),
130 // Note: Place defaults in View::reset_view_state(), not here
131 splitter_(new QSplitter()),
132 header_was_shrunk_(false), // The splitter remains unchanged after a reset, so this goes here
133 sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui()
134 scroll_needs_defaults_(true)
136 QVBoxLayout *root_layout = new QVBoxLayout(this);
137 root_layout->setContentsMargins(0, 0, 0, 0);
138 root_layout->addWidget(splitter_);
140 viewport_ = new Viewport(*this);
141 scrollarea_ = new CustomScrollArea(splitter_);
142 scrollarea_->setViewport(viewport_);
143 scrollarea_->setFrameShape(QFrame::NoFrame);
145 ruler_ = new Ruler(*this);
147 header_ = new Header(*this);
148 header_->setMinimumWidth(10); // So that the arrow tips show at least
150 // We put the header into a simple layout so that we can add the top margin,
151 // allowing us to make it line up with the bottom of the ruler
152 QWidget *header_container = new QWidget();
153 header_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
154 QVBoxLayout *header_layout = new QVBoxLayout(header_container);
155 header_layout->setContentsMargins(0, ruler_->sizeHint().height(), 0, 0);
156 header_layout->addWidget(header_);
158 // To let the ruler and scrollarea be on the same split pane, we need a layout
159 QWidget *trace_container = new QWidget();
160 trace_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
161 QVBoxLayout *trace_layout = new QVBoxLayout(trace_container);
162 trace_layout->setSpacing(0); // We don't want space between the ruler and scrollarea
163 trace_layout->setContentsMargins(0, 0, 0, 0);
164 trace_layout->addWidget(ruler_);
165 trace_layout->addWidget(scrollarea_);
167 splitter_->addWidget(header_container);
168 splitter_->addWidget(trace_container);
169 splitter_->setHandleWidth(1); // Don't show a visible rubber band
170 splitter_->setCollapsible(0, false); // Prevent the header from collapsing
171 splitter_->setCollapsible(1, false); // Prevent the traces from collapsing
172 splitter_->setStretchFactor(0, 0); // Prevent the panes from being resized
173 splitter_->setStretchFactor(1, 1); // when the entire view is resized
174 splitter_->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
176 viewport_->installEventFilter(this);
177 ruler_->installEventFilter(this);
178 header_->installEventFilter(this);
180 // Set up settings and event handlers
181 GlobalSettings settings;
182 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
183 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
185 GlobalSettings::add_change_handler(this);
187 // Set up metadata objects and event handlers
189 session_.metadata_obj_manager()->create_object(MetadataObjMainViewRange);
190 session_.metadata_obj_manager()->create_object(MetadataObjMousePos);
193 // Set up UI event handlers
194 connect(scrollarea_->horizontalScrollBar(), SIGNAL(valueChanged(int)),
195 this, SLOT(h_scroll_value_changed(int)));
196 connect(scrollarea_->verticalScrollBar(), SIGNAL(valueChanged(int)),
197 this, SLOT(v_scroll_value_changed()));
199 connect(header_, SIGNAL(selection_changed()),
200 ruler_, SLOT(clear_selection()));
201 connect(ruler_, SIGNAL(selection_changed()),
202 header_, SLOT(clear_selection()));
204 connect(header_, SIGNAL(selection_changed()),
205 this, SIGNAL(selection_changed()));
206 connect(ruler_, SIGNAL(selection_changed()),
207 this, SIGNAL(selection_changed()));
209 connect(splitter_, SIGNAL(splitterMoved(int, int)),
210 this, SLOT(on_splitter_moved()));
212 connect(&lazy_event_handler_, SIGNAL(timeout()),
213 this, SLOT(process_sticky_events()));
214 lazy_event_handler_.setSingleShot(true);
215 lazy_event_handler_.setInterval(1000 / ViewBase::MaxViewAutoUpdateRate);
217 // Set up local keyboard shortcuts
218 zoom_in_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Plus), this,
219 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
220 zoom_in_shortcut_->setAutoRepeat(false);
222 zoom_out_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Minus), this,
223 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
224 zoom_out_shortcut_->setAutoRepeat(false);
226 zoom_in_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Up), this,
227 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
228 zoom_out_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Down), this,
229 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
231 home_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Home), this,
232 SLOT(on_scroll_to_start_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
233 home_shortcut_->setAutoRepeat(false);
235 end_shortcut_ = new QShortcut(QKeySequence(Qt::Key_End), this,
236 SLOT(on_scroll_to_end_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
237 end_shortcut_->setAutoRepeat(false);
239 grab_ruler_left_shortcut_ = new QShortcut(QKeySequence(Qt::Key_1), this,
240 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
241 connect(grab_ruler_left_shortcut_, &QShortcut::activated,
242 this, [=]{on_grab_ruler(1);});
243 grab_ruler_left_shortcut_->setAutoRepeat(false);
245 grab_ruler_right_shortcut_ = new QShortcut(QKeySequence(Qt::Key_2), this,
246 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
247 connect(grab_ruler_right_shortcut_, &QShortcut::activated,
248 this, [=]{on_grab_ruler(2);});
249 grab_ruler_right_shortcut_->setAutoRepeat(false);
251 cancel_grab_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Escape), this,
252 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
253 connect(cancel_grab_shortcut_, &QShortcut::activated,
254 this, [=]{grabbed_widget_ = nullptr;});
255 cancel_grab_shortcut_->setAutoRepeat(false);
257 // Trigger the initial event manually. The default device has signals
258 // which were created before this object came into being
261 // Make sure the transparent widgets are on the top
270 GlobalSettings::remove_change_handler(this);
273 ViewType View::get_type() const
275 return ViewTypeTrace;
278 void View::reset_view_state()
280 ViewBase::reset_view_state();
282 segment_display_mode_ = Trace::ShowLastSegmentOnly;
283 segment_selectable_ = false;
288 custom_zero_offset_set_ = false;
289 updating_scroll_ = false;
290 restoring_state_ = false;
291 always_zoom_to_fit_ = false;
293 tick_prefix_ = pv::util::SIPrefix::yocto;
295 time_unit_ = util::TimeUnit::Time;
296 show_cursors_ = false;
297 cursors_ = make_shared<CursorPair>(*this);
298 next_flag_text_ = 'A';
299 trigger_markers_.clear();
300 hover_widget_ = nullptr;
301 grabbed_widget_ = nullptr;
302 hover_point_ = QPoint(-1, -1);
303 scroll_needs_defaults_ = true;
304 scale_at_acq_start_ = 0;
305 offset_at_acq_start_ = 0;
307 show_cursors_ = false;
308 cursor_state_changed(show_cursors_);
311 // Update the zoom state
312 calculate_tick_spacing();
314 // Make sure the standard bar's segment selector is in sync
315 set_segment_display_mode(segment_display_mode_);
317 scrollarea_->verticalScrollBar()->setRange(-100000000, 100000000);
320 Session& View::session()
325 const Session& View::session() const
330 vector< shared_ptr<Signal> > View::signals() const
335 shared_ptr<Signal> View::get_signal_by_signalbase(shared_ptr<data::SignalBase> base) const
337 shared_ptr<Signal> ret_val;
339 for (const shared_ptr<Signal>& s : signals_)
340 if (s->base() == base) {
348 void View::clear_signalbases()
350 ViewBase::clear_signalbases();
354 void View::add_signalbase(const shared_ptr<data::SignalBase> signalbase)
356 ViewBase::add_signalbase(signalbase);
358 shared_ptr<Signal> signal;
360 switch (signalbase->type()) {
361 case SignalBase::LogicChannel:
362 signal = shared_ptr<Signal>(new LogicSignal(session_, session_.device(), signalbase));
365 case SignalBase::AnalogChannel:
366 signal = shared_ptr<Signal>(new AnalogSignal(session_, signalbase));
369 case SignalBase::MathChannel:
370 signal = shared_ptr<Signal>(new MathSignal(session_, signalbase));
374 qDebug() << "Unknown signalbase type:" << signalbase->type();
379 signals_.push_back(signal);
381 signal->set_segment_display_mode(segment_display_mode_);
382 signal->set_current_segment(current_segment_);
384 // Secondary views use the signal's settings in the main view
385 if (!is_main_view()) {
386 shared_ptr<View> main_tv = dynamic_pointer_cast<View>(session_.main_view());
387 shared_ptr<Signal> main_signal = main_tv->get_signal_by_signalbase(signalbase);
389 signal->restore_settings(main_signal->save_settings());
392 connect(signal->base().get(), SIGNAL(name_changed(const QString&)),
393 this, SLOT(on_signal_name_changed()));
396 void View::remove_signalbase(const shared_ptr<data::SignalBase> signalbase)
398 ViewBase::remove_signalbase(signalbase);
400 shared_ptr<Signal> signal = get_signal_by_signalbase(signalbase);
403 remove_trace(signal);
407 void View::clear_decode_signals()
409 ViewBase::clear_decode_signals();
410 decode_traces_.clear();
413 void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
415 ViewBase::add_decode_signal(signal);
417 shared_ptr<DecodeTrace> d(
418 new DecodeTrace(session_, signal, decode_traces_.size()));
419 decode_traces_.push_back(d);
421 d->set_segment_display_mode(segment_display_mode_);
422 d->set_current_segment(current_segment_);
424 connect(signal.get(), SIGNAL(name_changed(const QString&)),
425 this, SLOT(on_signal_name_changed()));
428 void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
430 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
431 if ((*i)->base() == signal) {
432 decode_traces_.erase(i);
436 ViewBase::remove_decode_signal(signal);
440 void View::remove_trace(shared_ptr<Trace> trace)
442 TraceTreeItemOwner *const owner = trace->owner();
444 owner->remove_child_item(trace);
446 for (auto i = signals_.begin(); i != signals_.end(); i++)
452 if (!header_was_shrunk_)
453 resize_header_to_fit();
461 shared_ptr<Signal> View::get_signal_under_mouse_cursor() const
463 return signal_under_mouse_cursor_;
471 const View* View::view() const
476 Viewport* View::viewport()
481 const Viewport* View::viewport() const
486 QAbstractScrollArea* View::scrollarea() const
491 const Ruler* View::ruler() const
496 void View::save_settings(QSettings &settings) const
498 settings.setValue("scale", scale_);
499 settings.setValue("v_offset",
500 scrollarea_->verticalScrollBar()->sliderPosition());
502 settings.setValue("splitter_state", splitter_->saveState());
503 settings.setValue("segment_display_mode", segment_display_mode_);
505 GlobalSettings::store_timestamp(settings, "offset", offset_);
507 if (custom_zero_offset_set_)
508 GlobalSettings::store_timestamp(settings, "zero_offset", -zero_offset_);
510 settings.remove("zero_offset");
512 for (const shared_ptr<Signal>& signal : signals_) {
513 settings.beginGroup(signal->base()->internal_name());
514 signal->save_settings(settings);
519 void View::restore_settings(QSettings &settings)
521 // Note: It is assumed that this function is only called once,
522 // immediately after restoring a previous session.
524 if (settings.contains("scale"))
525 set_scale(settings.value("scale").toDouble());
527 if (settings.contains("offset")) {
528 // This also updates ruler_offset_
529 set_offset(GlobalSettings::restore_timestamp(settings, "offset"));
532 if (settings.contains("zero_offset"))
533 set_zero_position(GlobalSettings::restore_timestamp(settings, "zero_offset"));
535 if (settings.contains("splitter_state"))
536 splitter_->restoreState(settings.value("splitter_state").toByteArray());
538 if (settings.contains("segment_display_mode"))
539 set_segment_display_mode(
540 (Trace::SegmentDisplayMode)(settings.value("segment_display_mode").toInt()));
542 for (shared_ptr<Signal> signal : signals_) {
543 settings.beginGroup(signal->base()->internal_name());
544 signal->restore_settings(settings);
548 if (settings.contains("v_offset")) {
549 // Note: see eventFilter() for additional information
550 saved_v_offset_ = settings.value("v_offset").toInt();
551 scroll_needs_defaults_ = false;
554 restoring_state_ = true;
556 // Update the ruler so that it uses the new scale
557 calculate_tick_spacing();
560 vector< shared_ptr<TimeItem> > View::time_items() const
562 const vector<shared_ptr<Flag>> f(flags());
563 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
566 items.push_back(cursors_);
567 items.push_back(cursors_->first());
568 items.push_back(cursors_->second());
571 for (auto& trigger_marker : trigger_markers_)
572 items.push_back(trigger_marker);
577 double View::scale() const
582 void View::set_scale(double scale)
584 if (scale_ != scale) {
587 update_view_range_metaobject();
593 void View::set_offset(const pv::util::Timestamp& offset, bool force_update)
595 if ((offset_ != offset) || force_update) {
597 ruler_offset_ = offset_ + zero_offset_;
599 update_view_range_metaobject();
605 const Timestamp& View::offset() const
610 const Timestamp& View::ruler_offset() const
612 return ruler_offset_;
615 void View::set_zero_position(const pv::util::Timestamp& position)
617 zero_offset_ = -position;
618 custom_zero_offset_set_ = true;
620 // Force an immediate update of the offsets
621 set_offset(offset_, true);
625 void View::reset_zero_position()
629 // When enabled, the first trigger for this segment is used as the zero position
630 GlobalSettings settings;
631 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
633 if (trigger_is_zero_time) {
634 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
636 if (triggers.size() > 0)
637 zero_offset_ = triggers.front();
640 custom_zero_offset_set_ = false;
642 // Force an immediate update of the offsets
643 set_offset(offset_, true);
647 pv::util::Timestamp View::zero_offset() const
652 int View::owner_visual_v_offset() const
654 return -scrollarea_->verticalScrollBar()->sliderPosition();
657 void View::set_v_offset(int offset)
659 scrollarea_->verticalScrollBar()->setSliderPosition(offset);
664 void View::set_h_offset(int offset)
666 scrollarea_->horizontalScrollBar()->setSliderPosition(offset);
671 int View::get_h_scrollbar_maximum() const
673 return scrollarea_->horizontalScrollBar()->maximum();
676 unsigned int View::depth() const
681 uint32_t View::current_segment() const
683 return current_segment_;
686 pv::util::SIPrefix View::tick_prefix() const
691 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
693 if (tick_prefix_ != tick_prefix) {
694 tick_prefix_ = tick_prefix;
695 tick_prefix_changed();
699 unsigned int View::tick_precision() const
701 return tick_precision_;
704 void View::set_tick_precision(unsigned tick_precision)
706 if (tick_precision_ != tick_precision) {
707 tick_precision_ = tick_precision;
708 tick_precision_changed();
712 const pv::util::Timestamp& View::tick_period() const
717 unsigned int View::minor_tick_count() const
719 return minor_tick_count_;
722 void View::set_tick_period(const pv::util::Timestamp& tick_period)
724 if (tick_period_ != tick_period) {
725 tick_period_ = tick_period;
726 tick_period_changed();
730 TimeUnit View::time_unit() const
735 void View::set_time_unit(pv::util::TimeUnit time_unit)
737 if (time_unit_ != time_unit) {
738 time_unit_ = time_unit;
743 void View::set_current_segment(uint32_t segment_id)
745 current_segment_ = segment_id;
747 for (const shared_ptr<Signal>& signal : signals_)
748 signal->set_current_segment(current_segment_);
750 for (shared_ptr<DecodeTrace>& dt : decode_traces_)
751 dt->set_current_segment(current_segment_);
754 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
756 trigger_markers_.clear();
757 for (util::Timestamp timestamp : triggers)
758 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, timestamp));
760 if (!custom_zero_offset_set_)
761 reset_zero_position();
765 segment_changed(segment_id);
768 bool View::segment_is_selectable() const
770 return segment_selectable_;
773 Trace::SegmentDisplayMode View::segment_display_mode() const
775 return segment_display_mode_;
778 void View::set_segment_display_mode(Trace::SegmentDisplayMode mode)
780 segment_display_mode_ = mode;
782 for (const shared_ptr<Signal>& signal : signals_)
783 signal->set_segment_display_mode(mode);
785 uint32_t last_segment = session_.get_highest_segment_id();
788 case Trace::ShowLastSegmentOnly:
789 if (current_segment_ != last_segment)
790 set_current_segment(last_segment);
793 case Trace::ShowLastCompleteSegmentOnly:
794 // Do nothing if we only have one segment so far
795 if (last_segment > 0) {
796 // If the last segment isn't complete, the previous one must be
797 uint32_t segment_id =
798 (session_.all_segments_complete(last_segment)) ?
799 last_segment : last_segment - 1;
801 if (current_segment_ != segment_id)
802 set_current_segment(segment_id);
806 case Trace::ShowSingleSegmentOnly:
807 case Trace::ShowAllSegments:
808 case Trace::ShowAccumulatedIntensity:
810 // Current segment remains as-is
814 segment_selectable_ = true;
816 if ((mode == Trace::ShowAllSegments) || (mode == Trace::ShowAccumulatedIntensity))
817 segment_selectable_ = false;
821 segment_display_mode_changed((int)mode, segment_selectable_);
824 void View::zoom(double steps)
826 zoom(steps, viewport_->width() / 2);
829 void View::zoom(double steps, int offset)
831 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
834 void View::zoom_fit(bool gui_state)
836 // Act as one-shot when stopped, toggle along with the GUI otherwise
837 if (session_.get_capture_state() == Session::Stopped) {
838 always_zoom_to_fit_ = false;
839 always_zoom_to_fit_changed(false);
841 always_zoom_to_fit_ = gui_state;
842 always_zoom_to_fit_changed(gui_state);
845 const pair<Timestamp, Timestamp> extents = get_time_extents();
846 const Timestamp delta = extents.second - extents.first;
847 if (delta < Timestamp("1e-12"))
851 const int w = viewport_->width();
855 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
856 set_scale_offset(scale.convert_to<double>(), extents.first);
859 void View::focus_on_range(uint64_t start_sample, uint64_t end_sample)
862 const uint64_t w = viewport_->width();
866 const double samplerate = session_.get_samplerate();
867 const double samples_per_pixel = samplerate * scale_;
868 const uint64_t viewport_samples = w * samples_per_pixel;
870 const uint64_t sample_delta = (end_sample - start_sample);
872 // Note: We add 20% margin on the left and 5% on the right
873 const uint64_t ext_sample_delta = sample_delta * 1.25;
875 // Check if we can keep the zoom level and just center the supplied range
876 if (viewport_samples >= ext_sample_delta) {
877 // Note: offset is the left edge of the view so to center, we subtract half the view width
878 const int64_t sample_offset = (start_sample + (sample_delta / 2) - (viewport_samples / 2));
879 const Timestamp offset = sample_offset / samplerate;
880 set_scale_offset(scale_, offset);
882 const Timestamp offset = (start_sample - sample_delta * 0.20) / samplerate;
883 const Timestamp delta = ext_sample_delta / samplerate;
884 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
885 set_scale_offset(scale.convert_to<double>(), offset);
889 void View::set_scale_offset(double scale, const Timestamp& offset)
891 // Disable sticky scrolling / always zoom to fit when acquisition runs
892 // and user drags the viewport
893 if ((scale_ == scale) && (offset_ != offset) &&
894 (session_.get_capture_state() == Session::Running)) {
896 if (sticky_scrolling_) {
897 sticky_scrolling_ = false;
898 sticky_scrolling_changed(false);
901 if (always_zoom_to_fit_) {
902 always_zoom_to_fit_ = false;
903 always_zoom_to_fit_changed(false);
910 calculate_tick_spacing();
917 vector< shared_ptr<SignalData> > View::get_visible_data() const
919 // Make a set of all the visible data objects
920 vector< shared_ptr<SignalData> > visible_data;
921 for (const shared_ptr<Signal>& sig : signals_)
923 visible_data.push_back(sig->data());
928 pair<Timestamp, Timestamp> View::get_time_extents() const
930 boost::optional<Timestamp> left_time, right_time;
932 vector< shared_ptr<SignalData> > data;
933 if (signals_.size() == 0)
934 return make_pair(0, 0);
936 for (shared_ptr<Signal> s : signals_)
937 if (s->data() && (s->data()->segments().size() > 0))
938 data.push_back(s->data());
940 for (const shared_ptr<SignalData>& d : data) {
941 const vector< shared_ptr<Segment> > segments = d->segments();
942 for (const shared_ptr<Segment>& s : segments) {
943 double samplerate = s->samplerate();
944 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
946 const Timestamp start_time = s->start_time();
947 left_time = left_time ?
948 min(*left_time, start_time) :
950 right_time = right_time ?
951 max(*right_time, start_time + d->max_sample_count() / samplerate) :
952 start_time + d->max_sample_count() / samplerate;
956 if (!left_time || !right_time)
957 return make_pair(0, 0);
959 assert(*left_time <= *right_time);
960 return make_pair(*left_time, *right_time);
963 bool View::colored_bg() const
968 bool View::cursors_shown() const
970 return show_cursors_;
973 void View::show_cursors(bool show)
975 if (show_cursors_ != show) {
976 show_cursors_ = show;
978 cursor_state_changed(show);
984 void View::set_cursors(pv::util::Timestamp& first, pv::util::Timestamp& second)
988 cursors_->first()->set_time(first);
989 cursors_->second()->set_time(second);
995 void View::center_cursors()
999 const double time_width = scale_ * viewport_->width();
1000 cursors_->first()->set_time(offset_ + time_width * 0.4);
1001 cursors_->second()->set_time(offset_ + time_width * 0.6);
1004 viewport_->update();
1007 shared_ptr<CursorPair> View::cursors() const
1012 shared_ptr<Flag> View::add_flag(const Timestamp& time)
1014 shared_ptr<Flag> flag =
1015 make_shared<Flag>(*this, time, QString("%1").arg(next_flag_text_));
1016 flags_.push_back(flag);
1018 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
1019 (next_flag_text_ + 1);
1021 time_item_appearance_changed(true, true);
1025 void View::remove_flag(shared_ptr<Flag> flag)
1027 flags_.remove(flag);
1028 time_item_appearance_changed(true, true);
1031 vector< shared_ptr<Flag> > View::flags() const
1033 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
1034 stable_sort(flags.begin(), flags.end(),
1035 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
1036 return a->time() < b->time();
1042 const QPoint& View::hover_point() const
1044 return hover_point_;
1047 const QWidget* View::hover_widget() const
1049 return hover_widget_;
1052 int64_t View::get_nearest_level_change(const QPoint &p)
1054 // Is snapping disabled?
1055 if (snap_distance_ == 0)
1059 entry_t(shared_ptr<Signal> s) :
1060 signal(s), delta(numeric_limits<int64_t>::max()), sample(-1), is_dense(false) {}
1061 shared_ptr<Signal> signal;
1067 vector<entry_t> list;
1069 // Create list of signals to consider
1070 if (signal_under_mouse_cursor_)
1071 list.emplace_back(signal_under_mouse_cursor_);
1073 for (shared_ptr<Signal> s : signals_) {
1077 list.emplace_back(s);
1080 // Get data for listed signals
1081 for (entry_t &e : list) {
1082 // Calculate sample number from cursor position
1083 const double samples_per_pixel = e.signal->base()->get_samplerate() * scale();
1084 const int64_t x_offset = offset().convert_to<double>() / scale();
1085 const int64_t sample_num = max(((x_offset + p.x()) * samples_per_pixel), 0.0);
1087 vector<data::LogicSegment::EdgePair> edges =
1088 e.signal->get_nearest_level_changes(sample_num);
1094 const int64_t first_sample_delta = abs(sample_num - edges.front().first);
1095 const int64_t first_delta = first_sample_delta / samples_per_pixel;
1096 e.delta = first_delta;
1097 e.sample = edges.front().first;
1099 // Check second edge if available
1100 if (edges.size() == 2) {
1101 // Note: -1 because this is usually the right edge and sample points are left-aligned
1102 const int64_t second_sample_delta = abs(sample_num - edges.back().first - 1);
1103 const int64_t second_delta = second_sample_delta / samples_per_pixel;
1105 // If both edges are too close, we mark this signal as being dense
1106 if ((first_delta + second_delta) <= snap_distance_)
1109 if (second_delta < first_delta) {
1110 e.delta = second_delta;
1111 e.sample = edges.back().first;
1116 // Look for the best match: non-dense first, then dense
1117 entry_t *match = nullptr;
1119 for (entry_t &e : list) {
1120 if (e.delta > snap_distance_ || e.is_dense)
1124 if (e.delta < match->delta)
1131 for (entry_t &e : list) {
1136 if (e.delta < match->delta)
1144 // Somewhat ugly hack to make TimeItem::drag_by() work
1145 signal_under_mouse_cursor_ = match->signal;
1147 return match->sample;
1153 void View::restack_all_trace_tree_items()
1155 // Make a list of owners that is sorted from deepest first
1156 const vector<shared_ptr<TraceTreeItem>> items(
1157 list_by_type<TraceTreeItem>());
1158 set< TraceTreeItemOwner* > owners;
1159 for (const auto &r : items)
1160 owners.insert(r->owner());
1161 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
1162 sort(sorted_owners.begin(), sorted_owners.end(),
1163 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
1164 return a->depth() > b->depth(); });
1166 // Restack the items recursively
1167 for (auto &o : sorted_owners)
1170 // Animate the items to their destination
1171 for (const auto &i : items)
1172 i->animate_to_layout_v_offset();
1175 int View::header_width() const
1177 return header_->extended_size_hint().width();
1180 void View::on_setting_changed(const QString &key, const QVariant &value)
1182 GlobalSettings settings;
1184 if (key == GlobalSettings::Key_View_ColoredBG) {
1185 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
1186 viewport_->update();
1189 if ((key == GlobalSettings::Key_View_ShowSamplingPoints) ||
1190 (key == GlobalSettings::Key_View_ShowAnalogMinorGrid))
1191 viewport_->update();
1193 if (key == GlobalSettings::Key_View_TriggerIsZeroTime)
1194 on_settingViewTriggerIsZeroTime_changed(value);
1196 if (key == GlobalSettings::Key_View_SnapDistance)
1197 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
1200 void View::trigger_event(int segment_id, util::Timestamp location)
1202 // TODO This doesn't work if we're showing multiple segments at once
1203 if ((uint32_t)segment_id != current_segment_)
1206 if (!custom_zero_offset_set_)
1207 reset_zero_position();
1209 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
1212 void View::get_scroll_layout(double &length, Timestamp &offset) const
1214 const pair<Timestamp, Timestamp> extents = get_time_extents();
1215 length = ((extents.second - extents.first) / scale_).convert_to<double>();
1216 offset = offset_ / scale_;
1219 void View::set_zoom(double scale, int offset)
1221 // Reset the "always zoom to fit" feature as the user changed the zoom
1222 always_zoom_to_fit_ = false;
1223 always_zoom_to_fit_changed(false);
1225 const Timestamp cursor_offset = offset_ + scale_ * offset;
1226 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
1227 const Timestamp new_offset = cursor_offset - new_scale * offset;
1228 set_scale_offset(new_scale.convert_to<double>(), new_offset);
1231 void View::calculate_tick_spacing()
1233 const double SpacingIncrement = 10.0f;
1234 const double MinValueSpacing = 40.0f;
1236 // Figure out the highest numeric value visible on a label
1237 const QSize areaSize = viewport_->size();
1238 const Timestamp max_time = max(fabs(offset_),
1239 fabs(offset_ + scale_ * areaSize.width()));
1241 double min_width = SpacingIncrement;
1242 double label_width, tick_period_width;
1244 QFontMetrics m(QApplication::font());
1246 // Copies of the member variables with the same name, used in the calculation
1247 // and written back afterwards, so that we don't emit signals all the time
1248 // during the calculation.
1249 pv::util::Timestamp tick_period = tick_period_;
1250 pv::util::SIPrefix tick_prefix = tick_prefix_;
1251 unsigned tick_precision = tick_precision_;
1254 const double min_period = scale_ * min_width;
1256 const int order = (int)floorf(log10f(min_period));
1257 const pv::util::Timestamp order_decimal =
1258 pow(pv::util::Timestamp(10), order);
1260 // Allow for a margin of error so that a scale unit of 1 can be used.
1261 // Otherwise, for a SU of 1 the tick period will almost always be below
1262 // the min_period by a small amount - and thus skipped in favor of 2.
1263 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
1264 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
1265 double tp_with_margin;
1266 unsigned int unit = 0;
1269 tp_with_margin = order_decimal.convert_to<double>() *
1270 (ScaleUnits[unit++] + tp_margin);
1271 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
1273 minor_tick_count_ = (unit == 2) ? 4 : 5;
1274 tick_period = order_decimal * ScaleUnits[unit - 1];
1275 tick_prefix = static_cast<pv::util::SIPrefix>(
1276 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
1278 // Precision is the number of fractional digits required, not
1279 // taking the prefix into account (and it must never be negative)
1280 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
1282 tick_period_width = (tick_period / scale_).convert_to<double>();
1284 const QString label_text = Ruler::format_time_with_distance(
1285 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
1287 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
1288 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
1291 min_width += SpacingIncrement;
1292 } while (tick_period_width < label_width);
1294 set_tick_period(tick_period);
1295 set_tick_prefix(tick_prefix);
1296 set_tick_precision(tick_precision);
1299 void View::adjust_top_margin()
1303 const QSize areaSize = viewport_->size();
1305 const pair<int, int> extents = v_extents();
1306 const int top_margin = owner_visual_v_offset() + extents.first;
1307 const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second;
1309 // Do we have empty space at the top while the last trace goes out of screen?
1310 if ((top_margin > 0) && (trace_bottom > areaSize.height())) {
1311 const int trace_height = extents.second - extents.first;
1313 // Center everything vertically if there is enough space
1314 if (areaSize.height() >= trace_height)
1315 set_v_offset(extents.first -
1316 ((areaSize.height() - trace_height) / 2));
1318 // Remove the top margin to make as many traces fit on screen as possible
1319 set_v_offset(extents.first);
1323 void View::update_scroll()
1326 QScrollBar *hscrollbar = scrollarea_->horizontalScrollBar();
1327 QScrollBar *vscrollbar = scrollarea_->verticalScrollBar();
1329 const QSize areaSize = viewport_->size();
1331 // Set the horizontal scroll bar
1334 get_scroll_layout(length, offset);
1335 length = max(length - areaSize.width(), 0.0);
1337 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
1339 hscrollbar->setPageStep(areaSize.width() / 2);
1340 hscrollbar->setSingleStep(major_tick_distance);
1342 updating_scroll_ = true;
1344 if (length < MaxScrollValue) {
1345 hscrollbar->setRange(0, length);
1346 hscrollbar->setSliderPosition(offset.convert_to<double>());
1348 hscrollbar->setRange(0, MaxScrollValue);
1349 hscrollbar->setSliderPosition(
1350 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
1353 updating_scroll_ = false;
1355 // Set the vertical scrollbar
1356 vscrollbar->setPageStep(areaSize.height());
1357 vscrollbar->setSingleStep(areaSize.height() / 8);
1359 const pair<int, int> extents = v_extents();
1361 // Don't change the scrollbar range if there are no traces
1362 if (extents.first != extents.second) {
1363 int top_margin = ViewScrollMargin;
1364 int btm_margin = ViewScrollMargin;
1366 vscrollbar->setRange(extents.first - areaSize.height() + top_margin,
1367 extents.second - btm_margin);
1370 if (scroll_needs_defaults_) {
1371 set_scroll_default();
1372 scroll_needs_defaults_ = false;
1376 void View::reset_scroll()
1378 scrollarea_->verticalScrollBar()->setRange(0, 0);
1381 void View::set_scroll_default()
1385 const QSize areaSize = viewport_->size();
1387 const pair<int, int> extents = v_extents();
1388 const int trace_height = extents.second - extents.first;
1390 // Do all traces fit in the view?
1391 if (areaSize.height() >= trace_height)
1392 // Center all traces vertically
1393 set_v_offset(extents.first -
1394 ((areaSize.height() - trace_height) / 2));
1396 // Put the first trace at the top, letting the bottom ones overflow
1397 set_v_offset(extents.first);
1400 void View::determine_if_header_was_shrunk()
1402 const int header_pane_width =
1403 splitter_->sizes().front(); // clazy:exclude=detaching-temporary
1405 // Allow for a slight margin of error so that we also accept
1406 // slight differences when e.g. a label name change increased
1407 // the overall width
1408 header_was_shrunk_ = (header_pane_width < (header_width() - 10));
1411 void View::resize_header_to_fit()
1413 // Setting the maximum width of the header widget doesn't work as
1414 // expected because the splitter would allow the user to make the
1415 // pane wider than that, creating empty space as a result.
1416 // To make this work, we stricly enforce the maximum width by
1417 // expanding the header unless the user shrunk it on purpose.
1418 // As we're then setting the width of the header pane, we set the
1419 // splitter to the maximum allowed position.
1421 int splitter_area_width = 0;
1422 for (int w : splitter_->sizes()) // clazy:exclude=range-loop
1423 splitter_area_width += w;
1425 // Make sure the header has enough horizontal space to show all labels fully
1426 QList<int> pane_sizes;
1427 pane_sizes.push_back(header_->extended_size_hint().width());
1428 pane_sizes.push_back(splitter_area_width - header_->extended_size_hint().width());
1429 splitter_->setSizes(pane_sizes);
1432 void View::update_layout()
1436 update_view_range_metaobject();
1439 TraceTreeItemOwner* View::find_prevalent_trace_group(
1440 const shared_ptr<sigrok::ChannelGroup> &group,
1441 const map<shared_ptr<data::SignalBase>, shared_ptr<Signal> > &signal_map)
1445 set<TraceTreeItemOwner*> owners;
1446 vector<TraceTreeItemOwner*> owner_list;
1448 // Make a set and a list of all the owners
1449 for (const auto& channel : group->channels()) {
1450 for (auto& entry : signal_map) {
1451 if (entry.first->channel() == channel) {
1452 TraceTreeItemOwner *const o = (entry.second)->owner();
1453 owner_list.push_back(o);
1459 // Iterate through the list of owners, and find the most prevalent
1460 size_t max_prevalence = 0;
1461 TraceTreeItemOwner *prevalent_owner = nullptr;
1462 for (TraceTreeItemOwner *owner : owners) {
1463 const size_t prevalence = count_if(
1464 owner_list.begin(), owner_list.end(),
1465 [&](TraceTreeItemOwner *o) { return o == owner; });
1466 if (prevalence > max_prevalence) {
1467 max_prevalence = prevalence;
1468 prevalent_owner = owner;
1472 return prevalent_owner;
1475 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
1476 const vector< shared_ptr<sigrok::Channel> > &channels,
1477 const map<shared_ptr<data::SignalBase>, shared_ptr<Signal> > &signal_map,
1478 set< shared_ptr<Trace> > &add_list)
1480 vector< shared_ptr<Trace> > filtered_traces;
1482 for (const auto& channel : channels) {
1483 for (auto& entry : signal_map) {
1484 if (entry.first->channel() == channel) {
1485 shared_ptr<Trace> trace = entry.second;
1486 const auto list_iter = add_list.find(trace);
1487 if (list_iter == add_list.end())
1490 filtered_traces.push_back(trace);
1491 add_list.erase(list_iter);
1496 return filtered_traces;
1499 void View::determine_time_unit()
1501 // Check whether we know the sample rate and hence can use time as the unit
1502 if (time_unit_ == util::TimeUnit::Samples) {
1503 // Check all signals but...
1504 for (const shared_ptr<Signal>& signal : signals_) {
1505 const shared_ptr<SignalData> data = signal->data();
1507 // ...only check first segment of each
1508 const vector< shared_ptr<Segment> > segments = data->segments();
1509 if (!segments.empty())
1510 if (segments[0]->samplerate()) {
1511 set_time_unit(util::TimeUnit::Time);
1518 bool View::eventFilter(QObject *object, QEvent *event)
1520 const QEvent::Type type = event->type();
1522 if (type == QEvent::MouseMove) {
1525 hover_widget_ = qobject_cast<QWidget*>(object);
1527 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1528 if (object == viewport_)
1529 hover_point_ = mouse_event->pos();
1530 else if (object == ruler_)
1531 hover_point_ = mouse_event->pos();
1532 else if (object == header_)
1533 hover_point_ = QPoint(0, mouse_event->y());
1535 hover_point_ = QPoint(-1, -1);
1537 update_hover_point();
1539 if (grabbed_widget_) {
1540 int64_t nearest = get_nearest_level_change(hover_point_);
1541 pv::util::Timestamp mouse_time = offset_ + hover_point_.x() * scale_;
1543 if (nearest == -1) {
1544 grabbed_widget_->set_time(mouse_time);
1546 grabbed_widget_->set_time(nearest / get_signal_under_mouse_cursor()->base()->get_samplerate());
1550 } else if (type == QEvent::MouseButtonPress) {
1551 grabbed_widget_ = nullptr;
1553 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1554 if ((object == viewport_) && (mouse_event->button() & Qt::LeftButton)) {
1555 // Send event to all trace tree items
1556 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1557 list_by_type<TraceTreeItem>());
1558 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1559 r->mouse_left_press_event(mouse_event);
1561 } else if (type == QEvent::Leave) {
1562 hover_point_ = QPoint(-1, -1);
1563 update_hover_point();
1564 } else if (type == QEvent::Show) {
1566 // This is somewhat of a hack, unfortunately. We cannot use
1567 // set_v_offset() from within restore_settings() as the view
1568 // at that point is neither visible nor properly sized.
1569 // This is the least intrusive workaround I could come up
1570 // with: set the vertical offset (or scroll defaults) when
1571 // the view is shown, which happens after all widgets were
1572 // resized to their final sizes.
1575 if (restoring_state_)
1576 determine_if_header_was_shrunk();
1578 resize_header_to_fit();
1580 if (scroll_needs_defaults_) {
1581 set_scroll_default();
1582 scroll_needs_defaults_ = false;
1585 if (restoring_state_)
1586 set_v_offset(saved_v_offset_);
1589 return QObject::eventFilter(object, event);
1592 void View::contextMenuEvent(QContextMenuEvent *event)
1594 QPoint pos = event->pos() - QPoint(0, ruler_->sizeHint().height());
1596 const shared_ptr<ViewItem> r = viewport_->get_mouse_over_item(pos);
1600 QMenu *menu = r->create_view_context_menu(this, pos);
1602 menu->popup(event->globalPos());
1605 void View::resizeEvent(QResizeEvent* event)
1607 // Only adjust the top margin if we shrunk vertically
1608 if (event->size().height() < event->oldSize().height())
1609 adjust_top_margin();
1614 void View::update_view_range_metaobject() const
1616 const int w = viewport_->width();
1618 const double samplerate = session_.get_samplerate();
1619 // Note: sample_num = time * samplerate
1620 // Note: samples_per_pixel = samplerate * scale
1621 const int64_t start_sample = (offset_ * samplerate).convert_to<int64_t>();
1622 const int64_t end_sample = (offset_ * samplerate).convert_to<int64_t>() +
1623 (w * session_.get_samplerate() * scale_);
1625 MetadataObject* md_obj =
1626 session_.metadata_obj_manager()->find_object_by_type(MetadataObjMainViewRange);
1628 const int64_t old_start_sample = md_obj->value(MetadataValueStartSample).toLongLong();
1629 const int64_t old_end_sample = md_obj->value(MetadataValueEndSample).toLongLong();
1631 if (start_sample != old_start_sample)
1632 md_obj->set_value(MetadataValueStartSample, QVariant((qlonglong)start_sample));
1634 if (end_sample != old_end_sample)
1635 md_obj->set_value(MetadataValueEndSample, QVariant((qlonglong)end_sample));
1639 void View::update_hover_point()
1641 // Determine signal that the mouse cursor is hovering over
1642 signal_under_mouse_cursor_.reset();
1643 if (hover_widget_ == this) {
1644 for (const shared_ptr<Signal>& s : signals_) {
1645 const pair<int, int> extents = s->v_extents();
1646 const int top = s->get_visual_y() + extents.first;
1647 const int btm = s->get_visual_y() + extents.second;
1648 if ((hover_point_.y() >= top) && (hover_point_.y() <= btm)
1649 && s->base()->enabled())
1650 signal_under_mouse_cursor_ = s;
1654 // Update all trace tree items
1655 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1656 list_by_type<TraceTreeItem>());
1657 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1658 r->hover_point_changed(hover_point_);
1660 // Notify this view's listeners
1661 hover_point_changed(hover_widget_, hover_point_);
1663 // Hover point is -1 when invalid and 0 for the header
1664 if (hover_point_.x() > 0) {
1665 // Notify global listeners
1666 pv::util::Timestamp mouse_time = offset_ + hover_point_.x() * scale_;
1667 int64_t sample_num = (mouse_time * session_.get_samplerate()).convert_to<int64_t>();
1669 MetadataObject* md_obj =
1670 session_.metadata_obj_manager()->find_object_by_type(MetadataObjMousePos);
1671 md_obj->set_value(MetadataValueStartSample, QVariant((qlonglong)sample_num));
1675 void View::row_item_appearance_changed(bool label, bool content)
1680 viewport_->update();
1683 void View::time_item_appearance_changed(bool label, bool content)
1688 // Make sure the header pane width is updated, too
1693 viewport_->update();
1696 void View::extents_changed(bool horz, bool vert)
1699 (horz ? TraceTreeItemHExtentsChanged : 0) |
1700 (vert ? TraceTreeItemVExtentsChanged : 0);
1702 if (!lazy_event_handler_.isActive())
1703 lazy_event_handler_.start();
1706 void View::on_signal_name_changed()
1708 if (!header_was_shrunk_)
1709 resize_header_to_fit();
1712 void View::on_splitter_moved()
1714 // The header can only shrink when the splitter is moved manually
1715 determine_if_header_was_shrunk();
1717 if (!header_was_shrunk_)
1718 resize_header_to_fit();
1721 void View::on_zoom_in_shortcut_triggered()
1726 void View::on_zoom_out_shortcut_triggered()
1731 void View::on_scroll_to_start_shortcut_triggered()
1736 void View::on_scroll_to_end_shortcut_triggered()
1738 set_h_offset(get_h_scrollbar_maximum());
1741 void View::h_scroll_value_changed(int value)
1743 if (updating_scroll_)
1746 // Disable sticky scrolling when user moves the horizontal scroll bar
1747 // during a running acquisition
1748 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1749 sticky_scrolling_ = false;
1750 sticky_scrolling_changed(false);
1753 const int range = scrollarea_->horizontalScrollBar()->maximum();
1754 if (range < MaxScrollValue)
1755 set_offset(scale_ * value);
1759 get_scroll_layout(length, offset);
1760 set_offset(scale_ * length * value / MaxScrollValue);
1764 viewport_->update();
1767 void View::v_scroll_value_changed()
1770 viewport_->update();
1773 void View::on_grab_ruler(int ruler_id)
1775 if (!cursors_shown()) {
1780 // Release the grabbed widget if its trigger hotkey was pressed twice
1782 grabbed_widget_ = (grabbed_widget_ == cursors_->first().get()) ?
1783 nullptr : cursors_->first().get();
1785 grabbed_widget_ = (grabbed_widget_ == cursors_->second().get()) ?
1786 nullptr : cursors_->second().get();
1788 if (grabbed_widget_)
1789 grabbed_widget_->set_time(ruler_->get_absolute_time_from_x_pos(
1790 mapFromGlobal(QCursor::pos()).x() - header_width()));
1793 void View::signals_changed()
1795 using sigrok::Channel;
1797 lock_guard<mutex> lock(signal_mutex_);
1799 vector< shared_ptr<Channel> > channels;
1800 shared_ptr<sigrok::Device> sr_dev;
1801 bool signals_added_or_removed = false;
1803 // Do we need to set the vertical scrollbar to its default position later?
1804 // We do if there are no traces, i.e. the scroll bar has no range set
1805 bool reset_scrollbar =
1806 (scrollarea_->verticalScrollBar()->minimum() ==
1807 scrollarea_->verticalScrollBar()->maximum());
1809 if (!session_.device()) {
1813 sr_dev = session_.device()->device();
1815 channels = sr_dev->channels();
1818 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1820 // Make a list of traces that are being added, and a list of traces
1821 // that are being removed. The set_difference() algorithms require
1822 // both sets to be in the exact same order, which means that PD signals
1823 // must always be last as they interrupt the sort order otherwise
1824 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1825 const set<shared_ptr<Trace>> prev_traces(
1826 prev_trace_list.begin(), prev_trace_list.end());
1828 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1830 #ifdef ENABLE_DECODE
1831 traces.insert(decode_traces_.begin(), decode_traces_.end());
1833 set< shared_ptr<Trace> > add_traces;
1834 set_difference(traces.begin(), traces.end(),
1835 prev_traces.begin(), prev_traces.end(),
1836 inserter(add_traces, add_traces.begin()));
1838 set< shared_ptr<Trace> > remove_traces;
1839 set_difference(prev_traces.begin(), prev_traces.end(),
1840 traces.begin(), traces.end(),
1841 inserter(remove_traces, remove_traces.begin()));
1843 // Make a look-up table of sigrok Channels to pulseview Signals
1844 map<shared_ptr<data::SignalBase>, shared_ptr<Signal> > signal_map;
1845 for (const shared_ptr<Signal>& sig : signals_)
1846 signal_map[sig->base()] = sig;
1848 // Populate channel groups
1850 for (auto& entry : sr_dev->channel_groups()) {
1851 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1853 if (group->channels().size() <= 1)
1856 // Find best trace group to add to
1857 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1860 // If there is no trace group, create one
1861 shared_ptr<TraceGroup> new_trace_group;
1863 new_trace_group.reset(new TraceGroup());
1864 owner = new_trace_group.get();
1867 // Extract traces for the trace group, removing them from
1869 const vector< shared_ptr<Trace> > new_traces_in_group =
1870 extract_new_traces_for_channels(group->channels(),
1871 signal_map, add_traces);
1873 // Add the traces to the group
1874 const pair<int, int> prev_v_extents = owner->v_extents();
1875 int offset = prev_v_extents.second - prev_v_extents.first;
1876 for (const shared_ptr<Trace>& trace : new_traces_in_group) {
1878 owner->add_child_item(trace);
1880 const pair<int, int> extents = trace->v_extents();
1881 if (trace->enabled())
1882 offset += -extents.first;
1883 trace->force_to_v_offset(offset);
1884 if (trace->enabled())
1885 offset += extents.second;
1888 if (new_trace_group) {
1889 // Assign proper vertical offsets to each channel in the group
1890 new_trace_group->restack_items();
1892 // If this is a new group, enqueue it in the new top level
1894 if (!new_traces_in_group.empty())
1895 new_top_level_items.push_back(new_trace_group);
1899 // Enqueue the remaining logic channels in a group
1900 vector< shared_ptr<Channel> > logic_channels;
1901 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1902 [](const shared_ptr<Channel>& c) {
1903 return c->type() == sigrok::ChannelType::LOGIC; });
1905 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1906 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1908 if (non_grouped_logic_signals.size() > 0) {
1909 const shared_ptr<TraceGroup> non_grouped_trace_group(
1910 make_shared<TraceGroup>());
1911 for (const shared_ptr<Trace>& trace : non_grouped_logic_signals)
1912 non_grouped_trace_group->add_child_item(trace);
1914 non_grouped_trace_group->restack_items();
1915 new_top_level_items.push_back(non_grouped_trace_group);
1918 // Enqueue the remaining channels as free ungrouped traces
1919 const vector< shared_ptr<Trace> > new_top_level_signals =
1920 extract_new_traces_for_channels(channels, signal_map, add_traces);
1921 new_top_level_items.insert(new_top_level_items.end(),
1922 new_top_level_signals.begin(), new_top_level_signals.end());
1924 // Enqueue any remaining traces i.e. decode traces
1925 new_top_level_items.insert(new_top_level_items.end(),
1926 add_traces.begin(), add_traces.end());
1928 // Remove any removed traces
1929 for (const shared_ptr<Trace>& trace : remove_traces) {
1930 TraceTreeItemOwner *const owner = trace->owner();
1932 owner->remove_child_item(trace);
1933 signals_added_or_removed = true;
1936 // Remove any empty trace groups
1937 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1938 if (group->child_items().size() == 0) {
1939 remove_child_item(group);
1943 // Add and position the pending top levels items
1944 int offset = v_extents().second;
1945 for (shared_ptr<TraceTreeItem> item : new_top_level_items) {
1946 // items may already have gained an owner when they were added to a group above
1950 add_child_item(item);
1952 // Position the item after the last item or at the top if there is none
1953 const pair<int, int> extents = item->v_extents();
1955 if (item->enabled())
1956 offset += -extents.first;
1958 item->force_to_v_offset(offset);
1960 if (item->enabled())
1961 offset += extents.second;
1962 signals_added_or_removed = true;
1966 if (signals_added_or_removed && !header_was_shrunk_)
1967 resize_header_to_fit();
1972 viewport_->update();
1974 if (reset_scrollbar)
1975 set_scroll_default();
1978 void View::capture_state_updated(int state)
1980 GlobalSettings settings;
1982 if (state == Session::Running) {
1983 set_time_unit(util::TimeUnit::Samples);
1985 trigger_markers_.clear();
1986 if (!custom_zero_offset_set_)
1987 set_zero_position(0);
1989 scale_at_acq_start_ = scale_;
1990 offset_at_acq_start_ = offset_;
1992 // Activate "always zoom to fit" if the setting is enabled and we're
1993 // the main view of this session (other trace views may be used for
1994 // zooming and we don't want to mess them up)
1995 bool state = settings.value(GlobalSettings::Key_View_ZoomToFitDuringAcq).toBool();
1996 if (is_main_view_ && state && !restoring_state_) {
1997 always_zoom_to_fit_ = true;
1998 always_zoom_to_fit_changed(always_zoom_to_fit_);
2001 // Enable sticky scrolling if the setting is enabled
2002 sticky_scrolling_ = !restoring_state_ &&
2003 settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
2005 // Reset all traces to segment 0
2006 current_segment_ = 0;
2007 set_current_segment(current_segment_);
2010 if (state == Session::Stopped) {
2011 // After acquisition has stopped we need to re-calculate the ticks once
2012 // as it's otherwise done when the user pans or zooms, which is too late
2013 calculate_tick_spacing();
2015 // Reset "always zoom to fit", the acquisition has stopped
2016 if (always_zoom_to_fit_) {
2017 // Perform a final zoom-to-fit before disabling
2018 zoom_fit(always_zoom_to_fit_);
2019 always_zoom_to_fit_ = false;
2020 always_zoom_to_fit_changed(always_zoom_to_fit_);
2023 bool zoom_to_fit_after_acq =
2024 settings.value(GlobalSettings::Key_View_ZoomToFitAfterAcq).toBool();
2026 // Only perform zoom-to-fit if the user hasn't altered the viewport and
2027 // we didn't restore settings in the meanwhile
2028 if (zoom_to_fit_after_acq &&
2029 !restoring_state_ &&
2030 (scale_ == scale_at_acq_start_) &&
2031 (sticky_scrolling_ || (offset_ == offset_at_acq_start_))) {
2032 zoom_fit(false); // We're stopped, so the GUI state doesn't matter
2035 restoring_state_ = false;
2039 void View::on_new_segment(int new_segment_id)
2041 on_segment_changed(new_segment_id);
2044 void View::on_segment_completed(int segment_id)
2046 on_segment_changed(segment_id);
2049 void View::on_segment_changed(int segment)
2051 switch (segment_display_mode_) {
2052 case Trace::ShowLastSegmentOnly:
2053 case Trace::ShowSingleSegmentOnly:
2054 set_current_segment(segment);
2057 case Trace::ShowLastCompleteSegmentOnly:
2058 // Only update if all segments are complete
2059 if (session_.all_segments_complete(segment))
2060 set_current_segment(segment);
2063 case Trace::ShowAllSegments:
2064 case Trace::ShowAccumulatedIntensity:
2070 void View::on_settingViewTriggerIsZeroTime_changed(const QVariant new_value)
2074 if (!custom_zero_offset_set_)
2075 reset_zero_position();
2078 void View::perform_delayed_view_update()
2080 if (always_zoom_to_fit_) {
2082 } else if (sticky_scrolling_) {
2083 // Make right side of the view sticky
2086 get_scroll_layout(length, offset);
2088 const QSize areaSize = viewport_->size();
2089 length = max(length - areaSize.width(), 0.0);
2091 set_offset(scale_ * length);
2094 determine_time_unit();
2097 viewport_->update();
2100 void View::process_sticky_events()
2102 if (sticky_events_ & TraceTreeItemHExtentsChanged)
2104 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
2105 restack_all_trace_tree_items();
2109 // Clear the sticky events
2113 } // namespace trace
2114 } // namespace views