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/data/signalbase.hpp"
58 #include "pv/devices/device.hpp"
59 #include "pv/globalsettings.hpp"
60 #include "pv/session.hpp"
61 #include "pv/util.hpp"
64 #include "decodetrace.hpp"
67 using pv::data::SignalBase;
68 using pv::data::SignalData;
69 using pv::data::Segment;
70 using pv::util::TimeUnit;
71 using pv::util::Timestamp;
73 using std::back_inserter;
77 using std::lock_guard;
80 using std::make_shared;
82 using std::numeric_limits;
85 using std::set_difference;
86 using std::shared_ptr;
93 const Timestamp View::MaxScale("1e9");
94 const Timestamp View::MinScale("1e-12");
96 const int View::MaxScrollValue = INT_MAX / 2;
98 /* Area at the top and bottom of the view that can't be scrolled out of sight */
99 const int View::ViewScrollMargin = 50;
101 const int View::ScaleUnits[3] = {1, 2, 5};
103 CustomScrollArea::CustomScrollArea(QWidget *parent) :
104 QAbstractScrollArea(parent)
108 bool CustomScrollArea::viewportEvent(QEvent *event)
110 switch (event->type()) {
112 case QEvent::MouseButtonPress:
113 case QEvent::MouseButtonRelease:
114 case QEvent::MouseButtonDblClick:
115 case QEvent::MouseMove:
117 case QEvent::TouchBegin:
118 case QEvent::TouchUpdate:
119 case QEvent::TouchEnd:
122 return QAbstractScrollArea::viewportEvent(event);
126 View::View(Session &session, bool is_main_view, QMainWindow *parent) :
127 ViewBase(session, is_main_view, parent),
129 // Note: Place defaults in View::reset_view_state(), not here
130 splitter_(new QSplitter()),
131 header_was_shrunk_(false), // The splitter remains unchanged after a reset, so this goes here
132 sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui()
133 scroll_needs_defaults_(true)
135 QVBoxLayout *root_layout = new QVBoxLayout(this);
136 root_layout->setContentsMargins(0, 0, 0, 0);
137 root_layout->addWidget(splitter_);
139 viewport_ = new Viewport(*this);
140 scrollarea_ = new CustomScrollArea(splitter_);
141 scrollarea_->setViewport(viewport_);
142 scrollarea_->setFrameShape(QFrame::NoFrame);
144 ruler_ = new Ruler(*this);
146 header_ = new Header(*this);
147 header_->setMinimumWidth(10); // So that the arrow tips show at least
149 // We put the header into a simple layout so that we can add the top margin,
150 // allowing us to make it line up with the bottom of the ruler
151 QWidget *header_container = new QWidget();
152 header_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
153 QVBoxLayout *header_layout = new QVBoxLayout(header_container);
154 header_layout->setContentsMargins(0, ruler_->sizeHint().height(), 0, 0);
155 header_layout->addWidget(header_);
157 // To let the ruler and scrollarea be on the same split pane, we need a layout
158 QWidget *trace_container = new QWidget();
159 trace_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
160 QVBoxLayout *trace_layout = new QVBoxLayout(trace_container);
161 trace_layout->setSpacing(0); // We don't want space between the ruler and scrollarea
162 trace_layout->setContentsMargins(0, 0, 0, 0);
163 trace_layout->addWidget(ruler_);
164 trace_layout->addWidget(scrollarea_);
166 splitter_->addWidget(header_container);
167 splitter_->addWidget(trace_container);
168 splitter_->setHandleWidth(1); // Don't show a visible rubber band
169 splitter_->setCollapsible(0, false); // Prevent the header from collapsing
170 splitter_->setCollapsible(1, false); // Prevent the traces from collapsing
171 splitter_->setStretchFactor(0, 0); // Prevent the panes from being resized
172 splitter_->setStretchFactor(1, 1); // when the entire view is resized
173 splitter_->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
175 viewport_->installEventFilter(this);
176 ruler_->installEventFilter(this);
177 header_->installEventFilter(this);
179 // Set up settings and event handlers
180 GlobalSettings settings;
181 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
182 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
184 GlobalSettings::add_change_handler(this);
186 // Set up metadata objects and event handlers
188 session_.metadata_obj_manager()->create_object(MetadataObjMainViewRange);
189 session_.metadata_obj_manager()->create_object(MetadataObjMousePos);
192 // Set up UI event handlers
193 connect(scrollarea_->horizontalScrollBar(), SIGNAL(valueChanged(int)),
194 this, SLOT(h_scroll_value_changed(int)));
195 connect(scrollarea_->verticalScrollBar(), SIGNAL(valueChanged(int)),
196 this, SLOT(v_scroll_value_changed()));
198 connect(header_, SIGNAL(selection_changed()),
199 ruler_, SLOT(clear_selection()));
200 connect(ruler_, SIGNAL(selection_changed()),
201 header_, SLOT(clear_selection()));
203 connect(header_, SIGNAL(selection_changed()),
204 this, SIGNAL(selection_changed()));
205 connect(ruler_, SIGNAL(selection_changed()),
206 this, SIGNAL(selection_changed()));
208 connect(splitter_, SIGNAL(splitterMoved(int, int)),
209 this, SLOT(on_splitter_moved()));
211 connect(&lazy_event_handler_, SIGNAL(timeout()),
212 this, SLOT(process_sticky_events()));
213 lazy_event_handler_.setSingleShot(true);
214 lazy_event_handler_.setInterval(1000 / ViewBase::MaxViewAutoUpdateRate);
216 // Set up local keyboard shortcuts
217 zoom_in_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Plus), this,
218 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
219 zoom_in_shortcut_->setAutoRepeat(false);
221 zoom_out_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Minus), this,
222 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
223 zoom_out_shortcut_->setAutoRepeat(false);
225 zoom_in_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Up), this,
226 SLOT(on_zoom_in_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
227 zoom_out_shortcut_2_ = new QShortcut(QKeySequence(Qt::Key_Down), this,
228 SLOT(on_zoom_out_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
230 home_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Home), this,
231 SLOT(on_scroll_to_start_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
232 home_shortcut_->setAutoRepeat(false);
234 end_shortcut_ = new QShortcut(QKeySequence(Qt::Key_End), this,
235 SLOT(on_scroll_to_end_shortcut_triggered()), nullptr, Qt::WidgetWithChildrenShortcut);
236 end_shortcut_->setAutoRepeat(false);
238 grab_ruler_left_shortcut_ = new QShortcut(QKeySequence(Qt::Key_1), this,
239 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
240 connect(grab_ruler_left_shortcut_, &QShortcut::activated,
241 this, [=]{on_grab_ruler(1);});
242 grab_ruler_left_shortcut_->setAutoRepeat(false);
244 grab_ruler_right_shortcut_ = new QShortcut(QKeySequence(Qt::Key_2), this,
245 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
246 connect(grab_ruler_right_shortcut_, &QShortcut::activated,
247 this, [=]{on_grab_ruler(2);});
248 grab_ruler_right_shortcut_->setAutoRepeat(false);
250 cancel_grab_shortcut_ = new QShortcut(QKeySequence(Qt::Key_Escape), this,
251 nullptr, nullptr, Qt::WidgetWithChildrenShortcut);
252 connect(cancel_grab_shortcut_, &QShortcut::activated,
253 this, [=]{grabbed_widget_ = nullptr;});
254 cancel_grab_shortcut_->setAutoRepeat(false);
256 // Trigger the initial event manually. The default device has signals
257 // which were created before this object came into being
260 // Make sure the transparent widgets are on the top
269 GlobalSettings::remove_change_handler(this);
272 ViewType View::get_type() const
274 return ViewTypeTrace;
277 void View::reset_view_state()
279 ViewBase::reset_view_state();
281 segment_display_mode_ = Trace::ShowLastSegmentOnly;
282 segment_selectable_ = false;
287 custom_zero_offset_set_ = false;
288 updating_scroll_ = false;
289 restoring_state_ = false;
290 always_zoom_to_fit_ = false;
292 tick_prefix_ = pv::util::SIPrefix::yocto;
294 time_unit_ = util::TimeUnit::Time;
295 show_cursors_ = false;
296 cursors_ = make_shared<CursorPair>(*this);
297 next_flag_text_ = 'A';
298 trigger_markers_.clear();
299 hover_widget_ = nullptr;
300 grabbed_widget_ = nullptr;
301 hover_point_ = QPoint(-1, -1);
302 scroll_needs_defaults_ = true;
303 scale_at_acq_start_ = 0;
304 offset_at_acq_start_ = 0;
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_);
316 scrollarea_->verticalScrollBar()->setRange(-100000000, 100000000);
319 Session& View::session()
324 const Session& View::session() const
329 vector< shared_ptr<Signal> > View::signals() const
334 shared_ptr<Signal> View::get_signal_by_signalbase(shared_ptr<data::SignalBase> base) const
336 shared_ptr<Signal> ret_val;
338 for (const shared_ptr<Signal>& s : signals_)
339 if (s->base() == base) {
347 void View::clear_signalbases()
349 ViewBase::clear_signalbases();
353 void View::add_signalbase(const shared_ptr<data::SignalBase> signalbase)
355 ViewBase::add_signalbase(signalbase);
357 shared_ptr<Signal> signal;
359 switch (signalbase->type()) {
360 case SignalBase::LogicChannel:
361 signal = shared_ptr<Signal>(new LogicSignal(session_, session_.device(), signalbase));
364 case SignalBase::AnalogChannel:
365 signal = shared_ptr<Signal>(new AnalogSignal(session_, signalbase));
368 case SignalBase::MathChannel:
369 signal = shared_ptr<Signal>(new AnalogSignal(session_, signalbase));
373 qDebug() << "Unknown signalbase type:" << signalbase->type();
378 signals_.push_back(signal);
380 signal->set_segment_display_mode(segment_display_mode_);
381 signal->set_current_segment(current_segment_);
383 // Secondary views use the signal's settings in the main view
384 if (!is_main_view()) {
385 shared_ptr<View> main_tv = dynamic_pointer_cast<View>(session_.main_view());
386 shared_ptr<Signal> main_signal = main_tv->get_signal_by_signalbase(signalbase);
388 signal->restore_settings(main_signal->save_settings());
391 connect(signal->base().get(), SIGNAL(name_changed(const QString&)),
392 this, SLOT(on_signal_name_changed()));
395 void View::remove_signalbase(const shared_ptr<data::SignalBase> signalbase)
397 ViewBase::remove_signalbase(signalbase);
399 shared_ptr<Signal> signal = get_signal_by_signalbase(signalbase);
402 remove_trace(signal);
406 void View::clear_decode_signals()
408 ViewBase::clear_decode_signals();
409 decode_traces_.clear();
412 void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
414 ViewBase::add_decode_signal(signal);
416 shared_ptr<DecodeTrace> d(
417 new DecodeTrace(session_, signal, decode_traces_.size()));
418 decode_traces_.push_back(d);
420 d->set_segment_display_mode(segment_display_mode_);
421 d->set_current_segment(current_segment_);
423 connect(signal.get(), SIGNAL(name_changed(const QString&)),
424 this, SLOT(on_signal_name_changed()));
427 void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
429 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
430 if ((*i)->base() == signal) {
431 decode_traces_.erase(i);
435 ViewBase::remove_decode_signal(signal);
439 void View::remove_trace(shared_ptr<Trace> trace)
441 TraceTreeItemOwner *const owner = trace->owner();
443 owner->remove_child_item(trace);
445 for (auto i = signals_.begin(); i != signals_.end(); i++)
451 if (!header_was_shrunk_)
452 resize_header_to_fit();
460 shared_ptr<Signal> View::get_signal_under_mouse_cursor() const
462 return signal_under_mouse_cursor_;
470 const View* View::view() const
475 Viewport* View::viewport()
480 const Viewport* View::viewport() const
485 QAbstractScrollArea* View::scrollarea() const
490 const Ruler* View::ruler() const
495 void View::save_settings(QSettings &settings) const
497 settings.setValue("scale", scale_);
498 settings.setValue("v_offset",
499 scrollarea_->verticalScrollBar()->sliderPosition());
501 settings.setValue("splitter_state", splitter_->saveState());
502 settings.setValue("segment_display_mode", segment_display_mode_);
504 GlobalSettings::store_timestamp(settings, "offset", offset_);
506 if (custom_zero_offset_set_)
507 GlobalSettings::store_timestamp(settings, "zero_offset", -zero_offset_);
509 settings.remove("zero_offset");
511 for (const shared_ptr<Signal>& signal : signals_) {
512 settings.beginGroup(signal->base()->internal_name());
513 signal->save_settings(settings);
518 void View::restore_settings(QSettings &settings)
520 // Note: It is assumed that this function is only called once,
521 // immediately after restoring a previous session.
523 if (settings.contains("scale"))
524 set_scale(settings.value("scale").toDouble());
526 if (settings.contains("offset")) {
527 // This also updates ruler_offset_
528 set_offset(GlobalSettings::restore_timestamp(settings, "offset"));
531 if (settings.contains("zero_offset"))
532 set_zero_position(GlobalSettings::restore_timestamp(settings, "zero_offset"));
534 if (settings.contains("splitter_state"))
535 splitter_->restoreState(settings.value("splitter_state").toByteArray());
537 if (settings.contains("segment_display_mode"))
538 set_segment_display_mode(
539 (Trace::SegmentDisplayMode)(settings.value("segment_display_mode").toInt()));
541 for (shared_ptr<Signal> signal : signals_) {
542 settings.beginGroup(signal->base()->internal_name());
543 signal->restore_settings(settings);
547 if (settings.contains("v_offset")) {
548 // Note: see eventFilter() for additional information
549 saved_v_offset_ = settings.value("v_offset").toInt();
550 scroll_needs_defaults_ = false;
553 restoring_state_ = true;
555 // Update the ruler so that it uses the new scale
556 calculate_tick_spacing();
559 vector< shared_ptr<TimeItem> > View::time_items() const
561 const vector<shared_ptr<Flag>> f(flags());
562 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
565 items.push_back(cursors_);
566 items.push_back(cursors_->first());
567 items.push_back(cursors_->second());
570 for (auto& trigger_marker : trigger_markers_)
571 items.push_back(trigger_marker);
576 double View::scale() const
581 void View::set_scale(double scale)
583 if (scale_ != scale) {
586 update_view_range_metaobject();
592 void View::set_offset(const pv::util::Timestamp& offset, bool force_update)
594 if ((offset_ != offset) || force_update) {
596 ruler_offset_ = offset_ + zero_offset_;
598 update_view_range_metaobject();
604 const Timestamp& View::offset() const
609 const Timestamp& View::ruler_offset() const
611 return ruler_offset_;
614 void View::set_zero_position(const pv::util::Timestamp& position)
616 zero_offset_ = -position;
617 custom_zero_offset_set_ = true;
619 // Force an immediate update of the offsets
620 set_offset(offset_, true);
624 void View::reset_zero_position()
628 // When enabled, the first trigger for this segment is used as the zero position
629 GlobalSettings settings;
630 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
632 if (trigger_is_zero_time) {
633 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
635 if (triggers.size() > 0)
636 zero_offset_ = triggers.front();
639 custom_zero_offset_set_ = false;
641 // Force an immediate update of the offsets
642 set_offset(offset_, true);
646 pv::util::Timestamp View::zero_offset() const
651 int View::owner_visual_v_offset() const
653 return -scrollarea_->verticalScrollBar()->sliderPosition();
656 void View::set_v_offset(int offset)
658 scrollarea_->verticalScrollBar()->setSliderPosition(offset);
663 void View::set_h_offset(int offset)
665 scrollarea_->horizontalScrollBar()->setSliderPosition(offset);
670 int View::get_h_scrollbar_maximum() const
672 return scrollarea_->horizontalScrollBar()->maximum();
675 unsigned int View::depth() const
680 uint32_t View::current_segment() const
682 return current_segment_;
685 pv::util::SIPrefix View::tick_prefix() const
690 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
692 if (tick_prefix_ != tick_prefix) {
693 tick_prefix_ = tick_prefix;
694 tick_prefix_changed();
698 unsigned int View::tick_precision() const
700 return tick_precision_;
703 void View::set_tick_precision(unsigned tick_precision)
705 if (tick_precision_ != tick_precision) {
706 tick_precision_ = tick_precision;
707 tick_precision_changed();
711 const pv::util::Timestamp& View::tick_period() const
716 unsigned int View::minor_tick_count() const
718 return minor_tick_count_;
721 void View::set_tick_period(const pv::util::Timestamp& tick_period)
723 if (tick_period_ != tick_period) {
724 tick_period_ = tick_period;
725 tick_period_changed();
729 TimeUnit View::time_unit() const
734 void View::set_time_unit(pv::util::TimeUnit time_unit)
736 if (time_unit_ != time_unit) {
737 time_unit_ = time_unit;
742 void View::set_current_segment(uint32_t segment_id)
744 current_segment_ = segment_id;
746 for (const shared_ptr<Signal>& signal : signals_)
747 signal->set_current_segment(current_segment_);
749 for (shared_ptr<DecodeTrace>& dt : decode_traces_)
750 dt->set_current_segment(current_segment_);
753 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
755 trigger_markers_.clear();
756 for (util::Timestamp timestamp : triggers)
757 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, timestamp));
759 if (!custom_zero_offset_set_)
760 reset_zero_position();
764 segment_changed(segment_id);
767 bool View::segment_is_selectable() const
769 return segment_selectable_;
772 Trace::SegmentDisplayMode View::segment_display_mode() const
774 return segment_display_mode_;
777 void View::set_segment_display_mode(Trace::SegmentDisplayMode mode)
779 segment_display_mode_ = mode;
781 for (const shared_ptr<Signal>& signal : signals_)
782 signal->set_segment_display_mode(mode);
784 uint32_t last_segment = session_.get_segment_count() - 1;
787 case Trace::ShowLastSegmentOnly:
788 if (current_segment_ != last_segment)
789 set_current_segment(last_segment);
792 case Trace::ShowLastCompleteSegmentOnly:
793 // Do nothing if we only have one segment so far
794 if (last_segment > 0) {
795 // If the last segment isn't complete, the previous one must be
796 uint32_t segment_id =
797 (session_.all_segments_complete(last_segment)) ?
798 last_segment : last_segment - 1;
800 if (current_segment_ != segment_id)
801 set_current_segment(segment_id);
805 case Trace::ShowSingleSegmentOnly:
806 case Trace::ShowAllSegments:
807 case Trace::ShowAccumulatedIntensity:
809 // Current segment remains as-is
813 segment_selectable_ = true;
815 if ((mode == Trace::ShowAllSegments) || (mode == Trace::ShowAccumulatedIntensity))
816 segment_selectable_ = false;
820 segment_display_mode_changed((int)mode, segment_selectable_);
823 void View::zoom(double steps)
825 zoom(steps, viewport_->width() / 2);
828 void View::zoom(double steps, int offset)
830 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
833 void View::zoom_fit(bool gui_state)
835 // Act as one-shot when stopped, toggle along with the GUI otherwise
836 if (session_.get_capture_state() == Session::Stopped) {
837 always_zoom_to_fit_ = false;
838 always_zoom_to_fit_changed(false);
840 always_zoom_to_fit_ = gui_state;
841 always_zoom_to_fit_changed(gui_state);
844 const pair<Timestamp, Timestamp> extents = get_time_extents();
845 const Timestamp delta = extents.second - extents.first;
846 if (delta < Timestamp("1e-12"))
850 const int w = viewport_->width();
854 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
855 set_scale_offset(scale.convert_to<double>(), extents.first);
858 void View::focus_on_range(uint64_t start_sample, uint64_t end_sample)
861 const uint64_t w = viewport_->width();
865 const double samplerate = session_.get_samplerate();
866 const double samples_per_pixel = samplerate * scale_;
867 const uint64_t viewport_samples = w * samples_per_pixel;
869 const uint64_t sample_delta = (end_sample - start_sample);
871 // Note: We add 20% margin on the left and 5% on the right
872 const uint64_t ext_sample_delta = sample_delta * 1.25;
874 // Check if we can keep the zoom level and just center the supplied range
875 if (viewport_samples >= ext_sample_delta) {
876 // Note: offset is the left edge of the view so to center, we subtract half the view width
877 const int64_t sample_offset = (start_sample + (sample_delta / 2) - (viewport_samples / 2));
878 const Timestamp offset = sample_offset / samplerate;
879 set_scale_offset(scale_, offset);
881 const Timestamp offset = (start_sample - sample_delta * 0.20) / samplerate;
882 const Timestamp delta = ext_sample_delta / samplerate;
883 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
884 set_scale_offset(scale.convert_to<double>(), offset);
888 void View::set_scale_offset(double scale, const Timestamp& offset)
890 // Disable sticky scrolling / always zoom to fit when acquisition runs
891 // and user drags the viewport
892 if ((scale_ == scale) && (offset_ != offset) &&
893 (session_.get_capture_state() == Session::Running)) {
895 if (sticky_scrolling_) {
896 sticky_scrolling_ = false;
897 sticky_scrolling_changed(false);
900 if (always_zoom_to_fit_) {
901 always_zoom_to_fit_ = false;
902 always_zoom_to_fit_changed(false);
909 calculate_tick_spacing();
916 vector< shared_ptr<SignalData> > View::get_visible_data() const
918 // Make a set of all the visible data objects
919 vector< shared_ptr<SignalData> > visible_data;
920 for (const shared_ptr<Signal>& sig : signals_)
922 visible_data.push_back(sig->data());
927 pair<Timestamp, Timestamp> View::get_time_extents() const
929 boost::optional<Timestamp> left_time, right_time;
931 vector< shared_ptr<SignalData> > data;
932 if (signals_.size() == 0)
933 return make_pair(0, 0);
935 for (shared_ptr<Signal> s : signals_)
936 if (s->data() && (s->data()->segments().size() > 0))
937 data.push_back(s->data());
939 for (const shared_ptr<SignalData>& d : data) {
940 const vector< shared_ptr<Segment> > segments = d->segments();
941 for (const shared_ptr<Segment>& s : segments) {
942 double samplerate = s->samplerate();
943 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
945 const Timestamp start_time = s->start_time();
946 left_time = left_time ?
947 min(*left_time, start_time) :
949 right_time = right_time ?
950 max(*right_time, start_time + d->max_sample_count() / samplerate) :
951 start_time + d->max_sample_count() / samplerate;
955 if (!left_time || !right_time)
956 return make_pair(0, 0);
958 assert(*left_time <= *right_time);
959 return make_pair(*left_time, *right_time);
962 bool View::colored_bg() const
967 bool View::cursors_shown() const
969 return show_cursors_;
972 void View::show_cursors(bool show)
974 if (show_cursors_ != show) {
975 show_cursors_ = show;
977 cursor_state_changed(show);
983 void View::set_cursors(pv::util::Timestamp& first, pv::util::Timestamp& second)
987 cursors_->first()->set_time(first);
988 cursors_->second()->set_time(second);
994 void View::center_cursors()
998 const double time_width = scale_ * viewport_->width();
999 cursors_->first()->set_time(offset_ + time_width * 0.4);
1000 cursors_->second()->set_time(offset_ + time_width * 0.6);
1003 viewport_->update();
1006 shared_ptr<CursorPair> View::cursors() const
1011 shared_ptr<Flag> View::add_flag(const Timestamp& time)
1013 shared_ptr<Flag> flag =
1014 make_shared<Flag>(*this, time, QString("%1").arg(next_flag_text_));
1015 flags_.push_back(flag);
1017 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
1018 (next_flag_text_ + 1);
1020 time_item_appearance_changed(true, true);
1024 void View::remove_flag(shared_ptr<Flag> flag)
1026 flags_.remove(flag);
1027 time_item_appearance_changed(true, true);
1030 vector< shared_ptr<Flag> > View::flags() const
1032 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
1033 stable_sort(flags.begin(), flags.end(),
1034 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
1035 return a->time() < b->time();
1041 const QPoint& View::hover_point() const
1043 return hover_point_;
1046 const QWidget* View::hover_widget() const
1048 return hover_widget_;
1051 int64_t View::get_nearest_level_change(const QPoint &p)
1053 // Is snapping disabled?
1054 if (snap_distance_ == 0)
1058 entry_t(shared_ptr<Signal> s) :
1059 signal(s), delta(numeric_limits<int64_t>::max()), sample(-1), is_dense(false) {}
1060 shared_ptr<Signal> signal;
1066 vector<entry_t> list;
1068 // Create list of signals to consider
1069 if (signal_under_mouse_cursor_)
1070 list.emplace_back(signal_under_mouse_cursor_);
1072 for (shared_ptr<Signal> s : signals_) {
1076 list.emplace_back(s);
1079 // Get data for listed signals
1080 for (entry_t &e : list) {
1081 // Calculate sample number from cursor position
1082 const double samples_per_pixel = e.signal->base()->get_samplerate() * scale();
1083 const int64_t x_offset = offset().convert_to<double>() / scale();
1084 const int64_t sample_num = max(((x_offset + p.x()) * samples_per_pixel), 0.0);
1086 vector<data::LogicSegment::EdgePair> edges =
1087 e.signal->get_nearest_level_changes(sample_num);
1093 const int64_t first_sample_delta = abs(sample_num - edges.front().first);
1094 const int64_t first_delta = first_sample_delta / samples_per_pixel;
1095 e.delta = first_delta;
1096 e.sample = edges.front().first;
1098 // Check second edge if available
1099 if (edges.size() == 2) {
1100 // Note: -1 because this is usually the right edge and sample points are left-aligned
1101 const int64_t second_sample_delta = abs(sample_num - edges.back().first - 1);
1102 const int64_t second_delta = second_sample_delta / samples_per_pixel;
1104 // If both edges are too close, we mark this signal as being dense
1105 if ((first_delta + second_delta) <= snap_distance_)
1108 if (second_delta < first_delta) {
1109 e.delta = second_delta;
1110 e.sample = edges.back().first;
1115 // Look for the best match: non-dense first, then dense
1116 entry_t *match = nullptr;
1118 for (entry_t &e : list) {
1119 if (e.delta > snap_distance_ || e.is_dense)
1123 if (e.delta < match->delta)
1130 for (entry_t &e : list) {
1135 if (e.delta < match->delta)
1143 // Somewhat ugly hack to make TimeItem::drag_by() work
1144 signal_under_mouse_cursor_ = match->signal;
1146 return match->sample;
1152 void View::restack_all_trace_tree_items()
1154 // Make a list of owners that is sorted from deepest first
1155 const vector<shared_ptr<TraceTreeItem>> items(
1156 list_by_type<TraceTreeItem>());
1157 set< TraceTreeItemOwner* > owners;
1158 for (const auto &r : items)
1159 owners.insert(r->owner());
1160 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
1161 sort(sorted_owners.begin(), sorted_owners.end(),
1162 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
1163 return a->depth() > b->depth(); });
1165 // Restack the items recursively
1166 for (auto &o : sorted_owners)
1169 // Animate the items to their destination
1170 for (const auto &i : items)
1171 i->animate_to_layout_v_offset();
1174 int View::header_width() const
1176 return header_->extended_size_hint().width();
1179 void View::on_setting_changed(const QString &key, const QVariant &value)
1181 GlobalSettings settings;
1183 if (key == GlobalSettings::Key_View_ColoredBG) {
1184 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
1185 viewport_->update();
1188 if ((key == GlobalSettings::Key_View_ShowSamplingPoints) ||
1189 (key == GlobalSettings::Key_View_ShowAnalogMinorGrid))
1190 viewport_->update();
1192 if (key == GlobalSettings::Key_View_TriggerIsZeroTime)
1193 on_settingViewTriggerIsZeroTime_changed(value);
1195 if (key == GlobalSettings::Key_View_SnapDistance)
1196 snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
1199 void View::trigger_event(int segment_id, util::Timestamp location)
1201 // TODO This doesn't work if we're showing multiple segments at once
1202 if ((uint32_t)segment_id != current_segment_)
1205 if (!custom_zero_offset_set_)
1206 reset_zero_position();
1208 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
1211 void View::get_scroll_layout(double &length, Timestamp &offset) const
1213 const pair<Timestamp, Timestamp> extents = get_time_extents();
1214 length = ((extents.second - extents.first) / scale_).convert_to<double>();
1215 offset = offset_ / scale_;
1218 void View::set_zoom(double scale, int offset)
1220 // Reset the "always zoom to fit" feature as the user changed the zoom
1221 always_zoom_to_fit_ = false;
1222 always_zoom_to_fit_changed(false);
1224 const Timestamp cursor_offset = offset_ + scale_ * offset;
1225 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
1226 const Timestamp new_offset = cursor_offset - new_scale * offset;
1227 set_scale_offset(new_scale.convert_to<double>(), new_offset);
1230 void View::calculate_tick_spacing()
1232 const double SpacingIncrement = 10.0f;
1233 const double MinValueSpacing = 40.0f;
1235 // Figure out the highest numeric value visible on a label
1236 const QSize areaSize = viewport_->size();
1237 const Timestamp max_time = max(fabs(offset_),
1238 fabs(offset_ + scale_ * areaSize.width()));
1240 double min_width = SpacingIncrement;
1241 double label_width, tick_period_width;
1243 QFontMetrics m(QApplication::font());
1245 // Copies of the member variables with the same name, used in the calculation
1246 // and written back afterwards, so that we don't emit signals all the time
1247 // during the calculation.
1248 pv::util::Timestamp tick_period = tick_period_;
1249 pv::util::SIPrefix tick_prefix = tick_prefix_;
1250 unsigned tick_precision = tick_precision_;
1253 const double min_period = scale_ * min_width;
1255 const int order = (int)floorf(log10f(min_period));
1256 const pv::util::Timestamp order_decimal =
1257 pow(pv::util::Timestamp(10), order);
1259 // Allow for a margin of error so that a scale unit of 1 can be used.
1260 // Otherwise, for a SU of 1 the tick period will almost always be below
1261 // the min_period by a small amount - and thus skipped in favor of 2.
1262 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
1263 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
1264 double tp_with_margin;
1265 unsigned int unit = 0;
1268 tp_with_margin = order_decimal.convert_to<double>() *
1269 (ScaleUnits[unit++] + tp_margin);
1270 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
1272 minor_tick_count_ = (unit == 2) ? 4 : 5;
1273 tick_period = order_decimal * ScaleUnits[unit - 1];
1274 tick_prefix = static_cast<pv::util::SIPrefix>(
1275 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
1277 // Precision is the number of fractional digits required, not
1278 // taking the prefix into account (and it must never be negative)
1279 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
1281 tick_period_width = (tick_period / scale_).convert_to<double>();
1283 const QString label_text = Ruler::format_time_with_distance(
1284 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
1286 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
1287 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
1290 min_width += SpacingIncrement;
1291 } while (tick_period_width < label_width);
1293 set_tick_period(tick_period);
1294 set_tick_prefix(tick_prefix);
1295 set_tick_precision(tick_precision);
1298 void View::adjust_top_margin()
1302 const QSize areaSize = viewport_->size();
1304 const pair<int, int> extents = v_extents();
1305 const int top_margin = owner_visual_v_offset() + extents.first;
1306 const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second;
1308 // Do we have empty space at the top while the last trace goes out of screen?
1309 if ((top_margin > 0) && (trace_bottom > areaSize.height())) {
1310 const int trace_height = extents.second - extents.first;
1312 // Center everything vertically if there is enough space
1313 if (areaSize.height() >= trace_height)
1314 set_v_offset(extents.first -
1315 ((areaSize.height() - trace_height) / 2));
1317 // Remove the top margin to make as many traces fit on screen as possible
1318 set_v_offset(extents.first);
1322 void View::update_scroll()
1325 QScrollBar *hscrollbar = scrollarea_->horizontalScrollBar();
1326 QScrollBar *vscrollbar = scrollarea_->verticalScrollBar();
1328 const QSize areaSize = viewport_->size();
1330 // Set the horizontal scroll bar
1333 get_scroll_layout(length, offset);
1334 length = max(length - areaSize.width(), 0.0);
1336 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
1338 hscrollbar->setPageStep(areaSize.width() / 2);
1339 hscrollbar->setSingleStep(major_tick_distance);
1341 updating_scroll_ = true;
1343 if (length < MaxScrollValue) {
1344 hscrollbar->setRange(0, length);
1345 hscrollbar->setSliderPosition(offset.convert_to<double>());
1347 hscrollbar->setRange(0, MaxScrollValue);
1348 hscrollbar->setSliderPosition(
1349 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
1352 updating_scroll_ = false;
1354 // Set the vertical scrollbar
1355 vscrollbar->setPageStep(areaSize.height());
1356 vscrollbar->setSingleStep(areaSize.height() / 8);
1358 const pair<int, int> extents = v_extents();
1360 // Don't change the scrollbar range if there are no traces
1361 if (extents.first != extents.second) {
1362 int top_margin = ViewScrollMargin;
1363 int btm_margin = ViewScrollMargin;
1365 vscrollbar->setRange(extents.first - areaSize.height() + top_margin,
1366 extents.second - btm_margin);
1369 if (scroll_needs_defaults_) {
1370 set_scroll_default();
1371 scroll_needs_defaults_ = false;
1375 void View::reset_scroll()
1377 scrollarea_->verticalScrollBar()->setRange(0, 0);
1380 void View::set_scroll_default()
1384 const QSize areaSize = viewport_->size();
1386 const pair<int, int> extents = v_extents();
1387 const int trace_height = extents.second - extents.first;
1389 // Do all traces fit in the view?
1390 if (areaSize.height() >= trace_height)
1391 // Center all traces vertically
1392 set_v_offset(extents.first -
1393 ((areaSize.height() - trace_height) / 2));
1395 // Put the first trace at the top, letting the bottom ones overflow
1396 set_v_offset(extents.first);
1399 void View::determine_if_header_was_shrunk()
1401 const int header_pane_width =
1402 splitter_->sizes().front(); // clazy:exclude=detaching-temporary
1404 // Allow for a slight margin of error so that we also accept
1405 // slight differences when e.g. a label name change increased
1406 // the overall width
1407 header_was_shrunk_ = (header_pane_width < (header_width() - 10));
1410 void View::resize_header_to_fit()
1412 // Setting the maximum width of the header widget doesn't work as
1413 // expected because the splitter would allow the user to make the
1414 // pane wider than that, creating empty space as a result.
1415 // To make this work, we stricly enforce the maximum width by
1416 // expanding the header unless the user shrunk it on purpose.
1417 // As we're then setting the width of the header pane, we set the
1418 // splitter to the maximum allowed position.
1420 int splitter_area_width = 0;
1421 for (int w : splitter_->sizes()) // clazy:exclude=range-loop
1422 splitter_area_width += w;
1424 // Make sure the header has enough horizontal space to show all labels fully
1425 QList<int> pane_sizes;
1426 pane_sizes.push_back(header_->extended_size_hint().width());
1427 pane_sizes.push_back(splitter_area_width - header_->extended_size_hint().width());
1428 splitter_->setSizes(pane_sizes);
1431 void View::update_layout()
1435 update_view_range_metaobject();
1438 TraceTreeItemOwner* View::find_prevalent_trace_group(
1439 const shared_ptr<sigrok::ChannelGroup> &group,
1440 const map<shared_ptr<data::SignalBase>, shared_ptr<Signal> > &signal_map)
1444 set<TraceTreeItemOwner*> owners;
1445 vector<TraceTreeItemOwner*> owner_list;
1447 // Make a set and a list of all the owners
1448 for (const auto& channel : group->channels()) {
1449 for (auto& entry : signal_map) {
1450 if (entry.first->channel() == channel) {
1451 TraceTreeItemOwner *const o = (entry.second)->owner();
1452 owner_list.push_back(o);
1458 // Iterate through the list of owners, and find the most prevalent
1459 size_t max_prevalence = 0;
1460 TraceTreeItemOwner *prevalent_owner = nullptr;
1461 for (TraceTreeItemOwner *owner : owners) {
1462 const size_t prevalence = count_if(
1463 owner_list.begin(), owner_list.end(),
1464 [&](TraceTreeItemOwner *o) { return o == owner; });
1465 if (prevalence > max_prevalence) {
1466 max_prevalence = prevalence;
1467 prevalent_owner = owner;
1471 return prevalent_owner;
1474 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
1475 const vector< shared_ptr<sigrok::Channel> > &channels,
1476 const map<shared_ptr<data::SignalBase>, shared_ptr<Signal> > &signal_map,
1477 set< shared_ptr<Trace> > &add_list)
1479 vector< shared_ptr<Trace> > filtered_traces;
1481 for (const auto& channel : channels) {
1482 for (auto& entry : signal_map) {
1483 if (entry.first->channel() == channel) {
1484 shared_ptr<Trace> trace = entry.second;
1485 const auto list_iter = add_list.find(trace);
1486 if (list_iter == add_list.end())
1489 filtered_traces.push_back(trace);
1490 add_list.erase(list_iter);
1495 return filtered_traces;
1498 void View::determine_time_unit()
1500 // Check whether we know the sample rate and hence can use time as the unit
1501 if (time_unit_ == util::TimeUnit::Samples) {
1502 // Check all signals but...
1503 for (const shared_ptr<Signal>& signal : signals_) {
1504 const shared_ptr<SignalData> data = signal->data();
1506 // ...only check first segment of each
1507 const vector< shared_ptr<Segment> > segments = data->segments();
1508 if (!segments.empty())
1509 if (segments[0]->samplerate()) {
1510 set_time_unit(util::TimeUnit::Time);
1517 bool View::eventFilter(QObject *object, QEvent *event)
1519 const QEvent::Type type = event->type();
1521 if (type == QEvent::MouseMove) {
1524 hover_widget_ = qobject_cast<QWidget*>(object);
1526 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1527 if (object == viewport_)
1528 hover_point_ = mouse_event->pos();
1529 else if (object == ruler_)
1530 hover_point_ = mouse_event->pos();
1531 else if (object == header_)
1532 hover_point_ = QPoint(0, mouse_event->y());
1534 hover_point_ = QPoint(-1, -1);
1536 update_hover_point();
1538 if (grabbed_widget_) {
1539 int64_t nearest = get_nearest_level_change(hover_point_);
1540 pv::util::Timestamp mouse_time = offset_ + hover_point_.x() * scale_;
1542 if (nearest == -1) {
1543 grabbed_widget_->set_time(mouse_time);
1545 grabbed_widget_->set_time(nearest / get_signal_under_mouse_cursor()->base()->get_samplerate());
1549 } else if (type == QEvent::MouseButtonPress) {
1550 grabbed_widget_ = nullptr;
1552 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1553 if ((object == viewport_) && (mouse_event->button() & Qt::LeftButton)) {
1554 // Send event to all trace tree items
1555 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1556 list_by_type<TraceTreeItem>());
1557 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1558 r->mouse_left_press_event(mouse_event);
1560 } else if (type == QEvent::Leave) {
1561 hover_point_ = QPoint(-1, -1);
1562 update_hover_point();
1563 } else if (type == QEvent::Show) {
1565 // This is somewhat of a hack, unfortunately. We cannot use
1566 // set_v_offset() from within restore_settings() as the view
1567 // at that point is neither visible nor properly sized.
1568 // This is the least intrusive workaround I could come up
1569 // with: set the vertical offset (or scroll defaults) when
1570 // the view is shown, which happens after all widgets were
1571 // resized to their final sizes.
1574 if (restoring_state_)
1575 determine_if_header_was_shrunk();
1577 resize_header_to_fit();
1579 if (scroll_needs_defaults_) {
1580 set_scroll_default();
1581 scroll_needs_defaults_ = false;
1584 if (restoring_state_)
1585 set_v_offset(saved_v_offset_);
1588 return QObject::eventFilter(object, event);
1591 void View::contextMenuEvent(QContextMenuEvent *event)
1593 QPoint pos = event->pos() - QPoint(0, ruler_->sizeHint().height());
1595 const shared_ptr<ViewItem> r = viewport_->get_mouse_over_item(pos);
1599 QMenu *menu = r->create_view_context_menu(this, pos);
1601 menu->popup(event->globalPos());
1604 void View::resizeEvent(QResizeEvent* event)
1606 // Only adjust the top margin if we shrunk vertically
1607 if (event->size().height() < event->oldSize().height())
1608 adjust_top_margin();
1613 void View::update_view_range_metaobject() const
1615 const int w = viewport_->width();
1617 const double samplerate = session_.get_samplerate();
1618 // Note: sample_num = time * samplerate
1619 // Note: samples_per_pixel = samplerate * scale
1620 const int64_t start_sample = (offset_ * samplerate).convert_to<int64_t>();
1621 const int64_t end_sample = (offset_ * samplerate).convert_to<int64_t>() +
1622 (w * session_.get_samplerate() * scale_);
1624 MetadataObject* md_obj =
1625 session_.metadata_obj_manager()->find_object_by_type(MetadataObjMainViewRange);
1627 const int64_t old_start_sample = md_obj->value(MetadataValueStartSample).toLongLong();
1628 const int64_t old_end_sample = md_obj->value(MetadataValueEndSample).toLongLong();
1630 if (start_sample != old_start_sample)
1631 md_obj->set_value(MetadataValueStartSample, QVariant((qlonglong)start_sample));
1633 if (end_sample != old_end_sample)
1634 md_obj->set_value(MetadataValueEndSample, QVariant((qlonglong)end_sample));
1638 void View::update_hover_point()
1640 // Determine signal that the mouse cursor is hovering over
1641 signal_under_mouse_cursor_.reset();
1642 if (hover_widget_ == this) {
1643 for (const shared_ptr<Signal>& s : signals_) {
1644 const pair<int, int> extents = s->v_extents();
1645 const int top = s->get_visual_y() + extents.first;
1646 const int btm = s->get_visual_y() + extents.second;
1647 if ((hover_point_.y() >= top) && (hover_point_.y() <= btm)
1648 && s->base()->enabled())
1649 signal_under_mouse_cursor_ = s;
1653 // Update all trace tree items
1654 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1655 list_by_type<TraceTreeItem>());
1656 for (const shared_ptr<TraceTreeItem>& r : trace_tree_items)
1657 r->hover_point_changed(hover_point_);
1659 // Notify this view's listeners
1660 hover_point_changed(hover_widget_, hover_point_);
1662 // Hover point is -1 when invalid and 0 for the header
1663 if (hover_point_.x() > 0) {
1664 // Notify global listeners
1665 pv::util::Timestamp mouse_time = offset_ + hover_point_.x() * scale_;
1666 int64_t sample_num = (mouse_time * session_.get_samplerate()).convert_to<int64_t>();
1668 MetadataObject* md_obj =
1669 session_.metadata_obj_manager()->find_object_by_type(MetadataObjMousePos);
1670 md_obj->set_value(MetadataValueStartSample, QVariant((qlonglong)sample_num));
1674 void View::row_item_appearance_changed(bool label, bool content)
1679 viewport_->update();
1682 void View::time_item_appearance_changed(bool label, bool content)
1687 // Make sure the header pane width is updated, too
1692 viewport_->update();
1695 void View::extents_changed(bool horz, bool vert)
1698 (horz ? TraceTreeItemHExtentsChanged : 0) |
1699 (vert ? TraceTreeItemVExtentsChanged : 0);
1701 if (!lazy_event_handler_.isActive())
1702 lazy_event_handler_.start();
1705 void View::on_signal_name_changed()
1707 if (!header_was_shrunk_)
1708 resize_header_to_fit();
1711 void View::on_splitter_moved()
1713 // The header can only shrink when the splitter is moved manually
1714 determine_if_header_was_shrunk();
1716 if (!header_was_shrunk_)
1717 resize_header_to_fit();
1720 void View::on_zoom_in_shortcut_triggered()
1725 void View::on_zoom_out_shortcut_triggered()
1730 void View::on_scroll_to_start_shortcut_triggered()
1735 void View::on_scroll_to_end_shortcut_triggered()
1737 set_h_offset(get_h_scrollbar_maximum());
1740 void View::h_scroll_value_changed(int value)
1742 if (updating_scroll_)
1745 // Disable sticky scrolling when user moves the horizontal scroll bar
1746 // during a running acquisition
1747 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1748 sticky_scrolling_ = false;
1749 sticky_scrolling_changed(false);
1752 const int range = scrollarea_->horizontalScrollBar()->maximum();
1753 if (range < MaxScrollValue)
1754 set_offset(scale_ * value);
1758 get_scroll_layout(length, offset);
1759 set_offset(scale_ * length * value / MaxScrollValue);
1763 viewport_->update();
1766 void View::v_scroll_value_changed()
1769 viewport_->update();
1772 void View::on_grab_ruler(int ruler_id)
1774 if (!cursors_shown()) {
1779 // Release the grabbed widget if its trigger hotkey was pressed twice
1781 grabbed_widget_ = (grabbed_widget_ == cursors_->first().get()) ?
1782 nullptr : cursors_->first().get();
1784 grabbed_widget_ = (grabbed_widget_ == cursors_->second().get()) ?
1785 nullptr : cursors_->second().get();
1787 if (grabbed_widget_)
1788 grabbed_widget_->set_time(ruler_->get_absolute_time_from_x_pos(
1789 mapFromGlobal(QCursor::pos()).x() - header_width()));
1792 void View::signals_changed()
1794 using sigrok::Channel;
1796 lock_guard<mutex> lock(signal_mutex_);
1798 vector< shared_ptr<Channel> > channels;
1799 shared_ptr<sigrok::Device> sr_dev;
1800 bool signals_added_or_removed = false;
1802 // Do we need to set the vertical scrollbar to its default position later?
1803 // We do if there are no traces, i.e. the scroll bar has no range set
1804 bool reset_scrollbar =
1805 (scrollarea_->verticalScrollBar()->minimum() ==
1806 scrollarea_->verticalScrollBar()->maximum());
1808 if (!session_.device()) {
1812 sr_dev = session_.device()->device();
1814 channels = sr_dev->channels();
1817 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1819 // Make a list of traces that are being added, and a list of traces
1820 // that are being removed. The set_difference() algorithms require
1821 // both sets to be in the exact same order, which means that PD signals
1822 // must always be last as they interrupt the sort order otherwise
1823 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1824 const set<shared_ptr<Trace>> prev_traces(
1825 prev_trace_list.begin(), prev_trace_list.end());
1827 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1829 #ifdef ENABLE_DECODE
1830 traces.insert(decode_traces_.begin(), decode_traces_.end());
1832 set< shared_ptr<Trace> > add_traces;
1833 set_difference(traces.begin(), traces.end(),
1834 prev_traces.begin(), prev_traces.end(),
1835 inserter(add_traces, add_traces.begin()));
1837 set< shared_ptr<Trace> > remove_traces;
1838 set_difference(prev_traces.begin(), prev_traces.end(),
1839 traces.begin(), traces.end(),
1840 inserter(remove_traces, remove_traces.begin()));
1842 // Make a look-up table of sigrok Channels to pulseview Signals
1843 map<shared_ptr<data::SignalBase>, shared_ptr<Signal> > signal_map;
1844 for (const shared_ptr<Signal>& sig : signals_)
1845 signal_map[sig->base()] = sig;
1847 // Populate channel groups
1849 for (auto& entry : sr_dev->channel_groups()) {
1850 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1852 if (group->channels().size() <= 1)
1855 // Find best trace group to add to
1856 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1859 // If there is no trace group, create one
1860 shared_ptr<TraceGroup> new_trace_group;
1862 new_trace_group.reset(new TraceGroup());
1863 owner = new_trace_group.get();
1866 // Extract traces for the trace group, removing them from
1868 const vector< shared_ptr<Trace> > new_traces_in_group =
1869 extract_new_traces_for_channels(group->channels(),
1870 signal_map, add_traces);
1872 // Add the traces to the group
1873 const pair<int, int> prev_v_extents = owner->v_extents();
1874 int offset = prev_v_extents.second - prev_v_extents.first;
1875 for (const shared_ptr<Trace>& trace : new_traces_in_group) {
1877 owner->add_child_item(trace);
1879 const pair<int, int> extents = trace->v_extents();
1880 if (trace->enabled())
1881 offset += -extents.first;
1882 trace->force_to_v_offset(offset);
1883 if (trace->enabled())
1884 offset += extents.second;
1887 if (new_trace_group) {
1888 // Assign proper vertical offsets to each channel in the group
1889 new_trace_group->restack_items();
1891 // If this is a new group, enqueue it in the new top level
1893 if (!new_traces_in_group.empty())
1894 new_top_level_items.push_back(new_trace_group);
1898 // Enqueue the remaining logic channels in a group
1899 vector< shared_ptr<Channel> > logic_channels;
1900 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1901 [](const shared_ptr<Channel>& c) {
1902 return c->type() == sigrok::ChannelType::LOGIC; });
1904 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1905 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1907 if (non_grouped_logic_signals.size() > 0) {
1908 const shared_ptr<TraceGroup> non_grouped_trace_group(
1909 make_shared<TraceGroup>());
1910 for (const shared_ptr<Trace>& trace : non_grouped_logic_signals)
1911 non_grouped_trace_group->add_child_item(trace);
1913 non_grouped_trace_group->restack_items();
1914 new_top_level_items.push_back(non_grouped_trace_group);
1917 // Enqueue the remaining channels as free ungrouped traces
1918 const vector< shared_ptr<Trace> > new_top_level_signals =
1919 extract_new_traces_for_channels(channels, signal_map, add_traces);
1920 new_top_level_items.insert(new_top_level_items.end(),
1921 new_top_level_signals.begin(), new_top_level_signals.end());
1923 // Enqueue any remaining traces i.e. decode traces
1924 new_top_level_items.insert(new_top_level_items.end(),
1925 add_traces.begin(), add_traces.end());
1927 // Remove any removed traces
1928 for (const shared_ptr<Trace>& trace : remove_traces) {
1929 TraceTreeItemOwner *const owner = trace->owner();
1931 owner->remove_child_item(trace);
1932 signals_added_or_removed = true;
1935 // Remove any empty trace groups
1936 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1937 if (group->child_items().size() == 0) {
1938 remove_child_item(group);
1942 // Add and position the pending top levels items
1943 int offset = v_extents().second;
1944 for (shared_ptr<TraceTreeItem> item : new_top_level_items) {
1945 // items may already have gained an owner when they were added to a group above
1949 add_child_item(item);
1951 // Position the item after the last item or at the top if there is none
1952 const pair<int, int> extents = item->v_extents();
1954 if (item->enabled())
1955 offset += -extents.first;
1957 item->force_to_v_offset(offset);
1959 if (item->enabled())
1960 offset += extents.second;
1961 signals_added_or_removed = true;
1965 if (signals_added_or_removed && !header_was_shrunk_)
1966 resize_header_to_fit();
1971 viewport_->update();
1973 if (reset_scrollbar)
1974 set_scroll_default();
1977 void View::capture_state_updated(int state)
1979 GlobalSettings settings;
1981 if (state == Session::Running) {
1982 set_time_unit(util::TimeUnit::Samples);
1984 trigger_markers_.clear();
1985 if (!custom_zero_offset_set_)
1986 set_zero_position(0);
1988 scale_at_acq_start_ = scale_;
1989 offset_at_acq_start_ = offset_;
1991 // Activate "always zoom to fit" if the setting is enabled and we're
1992 // the main view of this session (other trace views may be used for
1993 // zooming and we don't want to mess them up)
1994 bool state = settings.value(GlobalSettings::Key_View_ZoomToFitDuringAcq).toBool();
1995 if (is_main_view_ && state && !restoring_state_) {
1996 always_zoom_to_fit_ = true;
1997 always_zoom_to_fit_changed(always_zoom_to_fit_);
2000 // Enable sticky scrolling if the setting is enabled
2001 sticky_scrolling_ = !restoring_state_ &&
2002 settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
2004 // Reset all traces to segment 0
2005 current_segment_ = 0;
2006 set_current_segment(current_segment_);
2009 if (state == Session::Stopped) {
2010 // After acquisition has stopped we need to re-calculate the ticks once
2011 // as it's otherwise done when the user pans or zooms, which is too late
2012 calculate_tick_spacing();
2014 // Reset "always zoom to fit", the acquisition has stopped
2015 if (always_zoom_to_fit_) {
2016 // Perform a final zoom-to-fit before disabling
2017 zoom_fit(always_zoom_to_fit_);
2018 always_zoom_to_fit_ = false;
2019 always_zoom_to_fit_changed(always_zoom_to_fit_);
2022 bool zoom_to_fit_after_acq =
2023 settings.value(GlobalSettings::Key_View_ZoomToFitAfterAcq).toBool();
2025 // Only perform zoom-to-fit if the user hasn't altered the viewport and
2026 // we didn't restore settings in the meanwhile
2027 if (zoom_to_fit_after_acq &&
2028 !restoring_state_ &&
2029 (scale_ == scale_at_acq_start_) &&
2030 (sticky_scrolling_ || (offset_ == offset_at_acq_start_))) {
2031 zoom_fit(false); // We're stopped, so the GUI state doesn't matter
2034 restoring_state_ = false;
2038 void View::on_new_segment(int new_segment_id)
2040 on_segment_changed(new_segment_id);
2043 void View::on_segment_completed(int segment_id)
2045 on_segment_changed(segment_id);
2048 void View::on_segment_changed(int segment)
2050 switch (segment_display_mode_) {
2051 case Trace::ShowLastSegmentOnly:
2052 case Trace::ShowSingleSegmentOnly:
2053 set_current_segment(segment);
2056 case Trace::ShowLastCompleteSegmentOnly:
2057 // Only update if all segments are complete
2058 if (session_.all_segments_complete(segment))
2059 set_current_segment(segment);
2062 case Trace::ShowAllSegments:
2063 case Trace::ShowAccumulatedIntensity:
2069 void View::on_settingViewTriggerIsZeroTime_changed(const QVariant new_value)
2073 if (!custom_zero_offset_set_)
2074 reset_zero_position();
2077 void View::perform_delayed_view_update()
2079 if (always_zoom_to_fit_) {
2081 } else if (sticky_scrolling_) {
2082 // Make right side of the view sticky
2085 get_scroll_layout(length, offset);
2087 const QSize areaSize = viewport_->size();
2088 length = max(length - areaSize.width(), 0.0);
2090 set_offset(scale_ * length);
2093 determine_time_unit();
2096 viewport_->update();
2099 void View::process_sticky_events()
2101 if (sticky_events_ & TraceTreeItemHExtentsChanged)
2103 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
2104 restack_all_trace_tree_items();
2108 // Clear the sticky events
2112 } // namespace trace
2113 } // namespace views