2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include <libsigrokdecode/libsigrokdecode.h>
32 #include <unordered_set>
34 #include <boost/archive/text_iarchive.hpp>
35 #include <boost/archive/text_oarchive.hpp>
36 #include <boost/serialization/serialization.hpp>
38 #include <QApplication>
40 #include <QFontMetrics>
41 #include <QMouseEvent>
43 #include <QVBoxLayout>
45 #include <libsigrokcxx/libsigrokcxx.hpp>
47 #include "analogsignal.hpp"
49 #include "logicsignal.hpp"
52 #include "tracegroup.hpp"
53 #include "triggermarker.hpp"
55 #include "viewport.hpp"
57 #include "pv/data/logic.hpp"
58 #include "pv/data/logicsegment.hpp"
59 #include "pv/devices/device.hpp"
60 #include "pv/globalsettings.hpp"
61 #include "pv/session.hpp"
62 #include "pv/util.hpp"
65 #include "decodetrace.hpp"
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;
79 using std::make_shared;
83 using std::set_difference;
84 using std::shared_ptr;
85 using std::stringstream;
86 using std::unordered_map;
87 using std::unordered_set;
94 const Timestamp View::MaxScale("1e9");
95 const Timestamp View::MinScale("1e-12");
97 const int View::MaxScrollValue = INT_MAX / 2;
99 const int View::ScaleUnits[3] = {1, 2, 5};
102 CustomScrollArea::CustomScrollArea(QWidget *parent) :
103 QAbstractScrollArea(parent)
107 bool CustomScrollArea::viewportEvent(QEvent *event)
109 switch (event->type()) {
111 case QEvent::MouseButtonPress:
112 case QEvent::MouseButtonRelease:
113 case QEvent::MouseButtonDblClick:
114 case QEvent::MouseMove:
116 case QEvent::TouchBegin:
117 case QEvent::TouchUpdate:
118 case QEvent::TouchEnd:
121 return QAbstractScrollArea::viewportEvent(event);
125 View::View(Session &session, bool is_main_view, QWidget *parent) :
126 ViewBase(session, is_main_view, parent),
128 // Note: Place defaults in View::reset_view_state(), not here
129 splitter_(new QSplitter()),
130 header_was_shrunk_(false), // The splitter remains unchanged after a reset, so this goes here
131 sticky_scrolling_(false) // Default setting is set in MainWindow::setup_ui()
133 QVBoxLayout *root_layout = new QVBoxLayout(this);
134 root_layout->setContentsMargins(0, 0, 0, 0);
135 root_layout->addWidget(splitter_);
137 viewport_ = new Viewport(*this);
138 scrollarea_ = new CustomScrollArea(splitter_);
139 scrollarea_->setViewport(viewport_);
140 scrollarea_->setFrameShape(QFrame::NoFrame);
142 ruler_ = new Ruler(*this);
144 header_ = new Header(*this);
145 header_->setMinimumWidth(10); // So that the arrow tips show at least
147 // We put the header into a simple layout so that we can add the top margin,
148 // allowing us to make it line up with the bottom of the ruler
149 QWidget *header_container = new QWidget();
150 header_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
151 QVBoxLayout *header_layout = new QVBoxLayout(header_container);
152 header_layout->setContentsMargins(0, ruler_->sizeHint().height(), 0, 0);
153 header_layout->addWidget(header_);
155 // To let the ruler and scrollarea be on the same split pane, we need a layout
156 QWidget *trace_container = new QWidget();
157 trace_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
158 QVBoxLayout *trace_layout = new QVBoxLayout(trace_container);
159 trace_layout->setSpacing(0); // We don't want space between the ruler and scrollarea
160 trace_layout->setContentsMargins(0, 0, 0, 0);
161 trace_layout->addWidget(ruler_);
162 trace_layout->addWidget(scrollarea_);
164 splitter_->addWidget(header_container);
165 splitter_->addWidget(trace_container);
166 splitter_->setHandleWidth(1); // Don't show a visible rubber band
167 splitter_->setCollapsible(0, false); // Prevent the header from collapsing
168 splitter_->setCollapsible(1, false); // Prevent the traces from collapsing
169 splitter_->setStretchFactor(0, 0); // Prevent the panes from being resized
170 splitter_->setStretchFactor(1, 1); // when the entire view is resized
171 splitter_->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
173 viewport_->installEventFilter(this);
174 ruler_->installEventFilter(this);
175 header_->installEventFilter(this);
177 // Set up settings and event handlers
178 GlobalSettings settings;
179 colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
181 GlobalSettings::add_change_handler(this);
183 connect(scrollarea_->horizontalScrollBar(), SIGNAL(valueChanged(int)),
184 this, SLOT(h_scroll_value_changed(int)));
185 connect(scrollarea_->verticalScrollBar(), SIGNAL(valueChanged(int)),
186 this, SLOT(v_scroll_value_changed()));
188 connect(header_, SIGNAL(selection_changed()),
189 ruler_, SLOT(clear_selection()));
190 connect(ruler_, SIGNAL(selection_changed()),
191 header_, SLOT(clear_selection()));
193 connect(header_, SIGNAL(selection_changed()),
194 this, SIGNAL(selection_changed()));
195 connect(ruler_, SIGNAL(selection_changed()),
196 this, SIGNAL(selection_changed()));
198 connect(splitter_, SIGNAL(splitterMoved(int, int)),
199 this, SLOT(on_splitter_moved()));
201 connect(&lazy_event_handler_, SIGNAL(timeout()),
202 this, SLOT(process_sticky_events()));
203 lazy_event_handler_.setSingleShot(true);
205 // Trigger the initial event manually. The default device has signals
206 // which were created before this object came into being
209 // make sure the transparent widgets are on the top
218 GlobalSettings::remove_change_handler(this);
221 void View::reset_view_state()
223 ViewBase::reset_view_state();
225 segment_display_mode_ = Trace::ShowLastSegmentOnly;
226 segment_selectable_ = false;
230 updating_scroll_ = false;
231 settings_restored_ = false;
232 always_zoom_to_fit_ = false;
234 tick_prefix_ = pv::util::SIPrefix::yocto;
236 time_unit_ = util::TimeUnit::Time;
237 show_cursors_ = false;
238 cursors_ = make_shared<CursorPair>(*this);
239 next_flag_text_ = 'A';
240 trigger_markers_.clear();
241 hover_point_ = QPoint(-1, -1);
242 scroll_needs_defaults_ = true;
244 scale_at_acq_start_ = 0;
245 offset_at_acq_start_ = 0;
246 suppress_zoom_to_fit_after_acq_ = false;
248 show_cursors_ = false;
249 cursor_state_changed(show_cursors_);
252 // Update the zoom state
253 calculate_tick_spacing();
255 // Make sure the standard bar's segment selector is in sync
256 set_segment_display_mode(segment_display_mode_);
259 Session& View::session()
264 const Session& View::session() const
269 unordered_set< shared_ptr<Signal> > View::signals() const
274 void View::clear_signals()
276 ViewBase::clear_signalbases();
280 void View::add_signal(const shared_ptr<Signal> signal)
282 ViewBase::add_signalbase(signal->base());
283 signals_.insert(signal);
285 signal->set_segment_display_mode(segment_display_mode_);
286 signal->set_current_segment(current_segment_);
288 connect(signal->base().get(), SIGNAL(name_changed(const QString&)),
289 this, SLOT(on_signal_name_changed()));
293 void View::clear_decode_signals()
295 decode_traces_.clear();
298 void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
300 shared_ptr<DecodeTrace> d(
301 new DecodeTrace(session_, signal, decode_traces_.size()));
302 decode_traces_.push_back(d);
304 d->set_segment_display_mode(segment_display_mode_);
305 d->set_current_segment(current_segment_);
307 connect(signal.get(), SIGNAL(name_changed(const QString&)),
308 this, SLOT(on_signal_name_changed()));
311 void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
313 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
314 if ((*i)->base() == signal) {
315 decode_traces_.erase(i);
327 const View* View::view() const
332 Viewport* View::viewport()
337 const Viewport* View::viewport() const
342 void View::save_settings(QSettings &settings) const
344 settings.setValue("scale", scale_);
345 settings.setValue("v_offset",
346 scrollarea_->verticalScrollBar()->sliderPosition());
348 settings.setValue("splitter_state", splitter_->saveState());
349 settings.setValue("segment_display_mode", segment_display_mode_);
353 boost::archive::text_oarchive oa(ss);
354 oa << boost::serialization::make_nvp("ruler_shift", ruler_shift_);
355 settings.setValue("ruler_shift", QString::fromStdString(ss.str()));
359 boost::archive::text_oarchive oa(ss);
360 oa << boost::serialization::make_nvp("offset", offset_);
361 settings.setValue("offset", QString::fromStdString(ss.str()));
364 for (shared_ptr<Signal> signal : signals_) {
365 settings.beginGroup(signal->base()->internal_name());
366 signal->save_settings(settings);
371 void View::restore_settings(QSettings &settings)
373 // Note: It is assumed that this function is only called once,
374 // immediately after restoring a previous session.
376 if (settings.contains("scale"))
377 set_scale(settings.value("scale").toDouble());
379 if (settings.contains("ruler_shift")) {
380 util::Timestamp shift;
382 ss << settings.value("ruler_shift").toString().toStdString();
385 boost::archive::text_iarchive ia(ss);
386 ia >> boost::serialization::make_nvp("ruler_shift", shift);
387 ruler_shift_ = shift;
388 } catch (boost::archive::archive_exception) {
389 qDebug() << "Could not restore the view ruler shift";
393 if (settings.contains("offset")) {
394 util::Timestamp offset;
396 ss << settings.value("offset").toString().toStdString();
399 boost::archive::text_iarchive ia(ss);
400 ia >> boost::serialization::make_nvp("offset", offset);
401 // This also updates ruler_offset_
403 } catch (boost::archive::archive_exception) {
404 qDebug() << "Could not restore the view offset";
408 if (settings.contains("splitter_state"))
409 splitter_->restoreState(settings.value("splitter_state").toByteArray());
411 if (settings.contains("segment_display_mode"))
412 set_segment_display_mode(
413 (Trace::SegmentDisplayMode)(settings.value("segment_display_mode").toInt()));
415 for (shared_ptr<Signal> signal : signals_) {
416 settings.beginGroup(signal->base()->internal_name());
417 signal->restore_settings(settings);
421 if (settings.contains("v_offset")) {
422 saved_v_offset_ = settings.value("v_offset").toInt();
423 set_v_offset(saved_v_offset_);
424 scroll_needs_defaults_ = false;
425 // Note: see eventFilter() for additional information
428 settings_restored_ = true;
429 suppress_zoom_to_fit_after_acq_ = true;
431 // Update the ruler so that it uses the new scale
432 calculate_tick_spacing();
435 vector< shared_ptr<TimeItem> > View::time_items() const
437 const vector<shared_ptr<Flag>> f(flags());
438 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
441 items.push_back(cursors_);
442 items.push_back(cursors_->first());
443 items.push_back(cursors_->second());
446 for (auto trigger_marker : trigger_markers_)
447 items.push_back(trigger_marker);
452 double View::scale() const
457 void View::set_scale(double scale)
459 if (scale_ != scale) {
465 void View::set_offset(const pv::util::Timestamp& offset, bool force_update)
467 if ((offset_ != offset) || force_update) {
469 ruler_offset_ = offset_ + ruler_shift_;
474 const Timestamp& View::offset() const
479 const Timestamp& View::ruler_offset() const
481 return ruler_offset_;
484 void View::set_zero_position(pv::util::Timestamp& position)
486 ruler_shift_ = -position;
488 // Force an immediate update of the offsets
489 set_offset(offset_, true);
493 void View::reset_zero_position()
497 // Force an immediate update of the offsets
498 set_offset(offset_, true);
502 int View::owner_visual_v_offset() const
504 return -scrollarea_->verticalScrollBar()->sliderPosition();
507 void View::set_v_offset(int offset)
509 scrollarea_->verticalScrollBar()->setSliderPosition(offset);
514 unsigned int View::depth() const
519 uint32_t View::current_segment() const
521 return current_segment_;
524 pv::util::SIPrefix View::tick_prefix() const
529 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
531 if (tick_prefix_ != tick_prefix) {
532 tick_prefix_ = tick_prefix;
533 tick_prefix_changed();
537 unsigned int View::tick_precision() const
539 return tick_precision_;
542 void View::set_tick_precision(unsigned tick_precision)
544 if (tick_precision_ != tick_precision) {
545 tick_precision_ = tick_precision;
546 tick_precision_changed();
550 const pv::util::Timestamp& View::tick_period() const
555 unsigned int View::minor_tick_count() const
557 return minor_tick_count_;
560 void View::set_tick_period(const pv::util::Timestamp& tick_period)
562 if (tick_period_ != tick_period) {
563 tick_period_ = tick_period;
564 tick_period_changed();
568 TimeUnit View::time_unit() const
573 void View::set_time_unit(pv::util::TimeUnit time_unit)
575 if (time_unit_ != time_unit) {
576 time_unit_ = time_unit;
581 void View::set_current_segment(uint32_t segment_id)
583 current_segment_ = segment_id;
585 for (shared_ptr<Signal> signal : signals_)
586 signal->set_current_segment(current_segment_);
588 for (shared_ptr<DecodeTrace> dt : decode_traces_)
589 dt->set_current_segment(current_segment_);
592 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
594 trigger_markers_.clear();
595 for (util::Timestamp timestamp : triggers)
596 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, timestamp));
598 // When enabled, the first trigger for this segment is used as the zero position
599 GlobalSettings settings;
600 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
602 if (trigger_is_zero_time && (triggers.size() > 0))
603 set_zero_position(triggers.front());
607 segment_changed(segment_id);
610 bool View::segment_is_selectable() const
612 return segment_selectable_;
615 Trace::SegmentDisplayMode View::segment_display_mode() const
617 return segment_display_mode_;
620 void View::set_segment_display_mode(Trace::SegmentDisplayMode mode)
622 segment_display_mode_ = mode;
624 for (shared_ptr<Signal> signal : signals_)
625 signal->set_segment_display_mode(mode);
627 uint32_t last_segment = session_.get_segment_count() - 1;
630 case Trace::ShowLastSegmentOnly:
631 if (current_segment_ != last_segment)
632 set_current_segment(last_segment);
635 case Trace::ShowLastCompleteSegmentOnly:
636 // Do nothing if we only have one segment so far
637 if (last_segment > 0) {
638 // If the last segment isn't complete, the previous one must be
639 uint32_t segment_id =
640 (session_.all_segments_complete(last_segment)) ?
641 last_segment : last_segment - 1;
643 if (current_segment_ != segment_id)
644 set_current_segment(segment_id);
648 case Trace::ShowSingleSegmentOnly:
649 case Trace::ShowAllSegments:
650 case Trace::ShowAccumulatedIntensity:
652 // Current segment remains as-is
656 segment_selectable_ = true;
658 if ((mode == Trace::ShowAllSegments) || (mode == Trace::ShowAccumulatedIntensity))
659 segment_selectable_ = false;
663 segment_display_mode_changed((int)mode, segment_selectable_);
666 void View::zoom(double steps)
668 zoom(steps, viewport_->width() / 2);
671 void View::zoom(double steps, int offset)
673 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
676 void View::zoom_fit(bool gui_state)
678 // Act as one-shot when stopped, toggle along with the GUI otherwise
679 if (session_.get_capture_state() == Session::Stopped) {
680 always_zoom_to_fit_ = false;
681 always_zoom_to_fit_changed(false);
683 always_zoom_to_fit_ = gui_state;
684 always_zoom_to_fit_changed(gui_state);
687 const pair<Timestamp, Timestamp> extents = get_time_extents();
688 const Timestamp delta = extents.second - extents.first;
689 if (delta < Timestamp("1e-12"))
693 const int w = viewport_->width();
697 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
698 set_scale_offset(scale.convert_to<double>(), extents.first);
701 void View::set_scale_offset(double scale, const Timestamp& offset)
703 // Disable sticky scrolling / always zoom to fit when acquisition runs
704 // and user drags the viewport
705 if ((scale_ == scale) && (offset_ != offset) &&
706 (session_.get_capture_state() == Session::Running)) {
708 if (sticky_scrolling_) {
709 sticky_scrolling_ = false;
710 sticky_scrolling_changed(false);
713 if (always_zoom_to_fit_) {
714 always_zoom_to_fit_ = false;
715 always_zoom_to_fit_changed(false);
722 calculate_tick_spacing();
729 set< shared_ptr<SignalData> > View::get_visible_data() const
731 // Make a set of all the visible data objects
732 set< shared_ptr<SignalData> > visible_data;
733 for (const shared_ptr<Signal> sig : signals_)
735 visible_data.insert(sig->data());
740 pair<Timestamp, Timestamp> View::get_time_extents() const
742 boost::optional<Timestamp> left_time, right_time;
743 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
744 for (const shared_ptr<SignalData> d : visible_data) {
745 const vector< shared_ptr<Segment> > segments = d->segments();
746 for (const shared_ptr<Segment> &s : segments) {
747 double samplerate = s->samplerate();
748 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
750 const Timestamp start_time = s->start_time();
751 left_time = left_time ?
752 min(*left_time, start_time) :
754 right_time = right_time ?
755 max(*right_time, start_time + d->max_sample_count() / samplerate) :
756 start_time + d->max_sample_count() / samplerate;
760 if (!left_time || !right_time)
761 return make_pair(0, 0);
763 assert(*left_time < *right_time);
764 return make_pair(*left_time, *right_time);
767 void View::enable_show_sampling_points(bool state)
774 void View::enable_show_analog_minor_grid(bool state)
781 void View::enable_colored_bg(bool state)
787 bool View::colored_bg() const
792 bool View::cursors_shown() const
794 return show_cursors_;
797 void View::show_cursors(bool show)
799 show_cursors_ = show;
800 cursor_state_changed(show);
805 void View::centre_cursors()
808 const double time_width = scale_ * viewport_->width();
809 cursors_->first()->set_time(offset_ + time_width * 0.4);
810 cursors_->second()->set_time(offset_ + time_width * 0.6);
817 shared_ptr<CursorPair> View::cursors() const
822 void View::add_flag(const Timestamp& time)
824 flags_.push_back(make_shared<Flag>(*this, time,
825 QString("%1").arg(next_flag_text_)));
827 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
828 (next_flag_text_ + 1);
830 time_item_appearance_changed(true, true);
833 void View::remove_flag(shared_ptr<Flag> flag)
836 time_item_appearance_changed(true, true);
839 vector< shared_ptr<Flag> > View::flags() const
841 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
842 stable_sort(flags.begin(), flags.end(),
843 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
844 return a->time() < b->time();
850 const QPoint& View::hover_point() const
855 void View::restack_all_trace_tree_items()
857 // Make a list of owners that is sorted from deepest first
858 const vector<shared_ptr<TraceTreeItem>> items(
859 list_by_type<TraceTreeItem>());
860 set< TraceTreeItemOwner* > owners;
861 for (const auto &r : items)
862 owners.insert(r->owner());
863 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
864 sort(sorted_owners.begin(), sorted_owners.end(),
865 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
866 return a->depth() > b->depth(); });
868 // Restack the items recursively
869 for (auto &o : sorted_owners)
872 // Animate the items to their destination
873 for (const auto &i : items)
874 i->animate_to_layout_v_offset();
877 void View::on_setting_changed(const QString &key, const QVariant &value)
879 if (key == GlobalSettings::Key_View_TriggerIsZeroTime)
880 on_settingViewTriggerIsZeroTime_changed(value);
883 void View::trigger_event(int segment_id, util::Timestamp location)
885 // TODO This doesn't work if we're showing multiple segments at once
886 if ((uint32_t)segment_id != current_segment_)
889 // Set zero location if the Key_View_TriggerIsZeroTime setting is set and
890 // if this is the first trigger for this segment.
891 GlobalSettings settings;
892 bool trigger_is_zero_time = settings.value(GlobalSettings::Key_View_TriggerIsZeroTime).toBool();
894 size_t trigger_count = session_.get_triggers(current_segment_).size();
896 if (trigger_is_zero_time && trigger_count == 1)
897 set_zero_position(location);
899 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
902 void View::get_scroll_layout(double &length, Timestamp &offset) const
904 const pair<Timestamp, Timestamp> extents = get_time_extents();
905 length = ((extents.second - extents.first) / scale_).convert_to<double>();
906 offset = offset_ / scale_;
909 void View::set_zoom(double scale, int offset)
911 // Reset the "always zoom to fit" feature as the user changed the zoom
912 always_zoom_to_fit_ = false;
913 always_zoom_to_fit_changed(false);
915 const Timestamp cursor_offset = offset_ + scale_ * offset;
916 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
917 const Timestamp new_offset = cursor_offset - new_scale * offset;
918 set_scale_offset(new_scale.convert_to<double>(), new_offset);
921 void View::calculate_tick_spacing()
923 const double SpacingIncrement = 10.0f;
924 const double MinValueSpacing = 40.0f;
926 // Figure out the highest numeric value visible on a label
927 const QSize areaSize = viewport_->size();
928 const Timestamp max_time = max(fabs(offset_),
929 fabs(offset_ + scale_ * areaSize.width()));
931 double min_width = SpacingIncrement;
932 double label_width, tick_period_width;
934 QFontMetrics m(QApplication::font());
936 // Copies of the member variables with the same name, used in the calculation
937 // and written back afterwards, so that we don't emit signals all the time
938 // during the calculation.
939 pv::util::Timestamp tick_period = tick_period_;
940 pv::util::SIPrefix tick_prefix = tick_prefix_;
941 unsigned tick_precision = tick_precision_;
944 const double min_period = scale_ * min_width;
946 const int order = (int)floorf(log10f(min_period));
947 const pv::util::Timestamp order_decimal =
948 pow(pv::util::Timestamp(10), order);
950 // Allow for a margin of error so that a scale unit of 1 can be used.
951 // Otherwise, for a SU of 1 the tick period will almost always be below
952 // the min_period by a small amount - and thus skipped in favor of 2.
953 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
954 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
955 double tp_with_margin;
956 unsigned int unit = 0;
959 tp_with_margin = order_decimal.convert_to<double>() *
960 (ScaleUnits[unit++] + tp_margin);
961 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
963 minor_tick_count_ = (unit == 2) ? 4 : 5;
964 tick_period = order_decimal * ScaleUnits[unit - 1];
965 tick_prefix = static_cast<pv::util::SIPrefix>(
966 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
968 // Precision is the number of fractional digits required, not
969 // taking the prefix into account (and it must never be negative)
970 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
972 tick_period_width = (tick_period / scale_).convert_to<double>();
974 const QString label_text = Ruler::format_time_with_distance(
975 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
977 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
978 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
981 min_width += SpacingIncrement;
982 } while (tick_period_width < label_width);
984 set_tick_period(tick_period);
985 set_tick_prefix(tick_prefix);
986 set_tick_precision(tick_precision);
989 void View::adjust_top_margin()
993 const QSize areaSize = viewport_->size();
995 const pair<int, int> extents = v_extents();
996 const int top_margin = owner_visual_v_offset() + extents.first;
997 const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second;
999 // Do we have empty space at the top while the last trace goes out of screen?
1000 if ((top_margin > 0) && (trace_bottom > areaSize.height())) {
1001 const int trace_height = extents.second - extents.first;
1003 // Center everything vertically if there is enough space
1004 if (areaSize.height() >= trace_height)
1005 set_v_offset(extents.first -
1006 ((areaSize.height() - trace_height) / 2));
1008 // Remove the top margin to make as many traces fit on screen as possible
1009 set_v_offset(extents.first);
1013 void View::update_scroll()
1016 QScrollBar *hscrollbar = scrollarea_->horizontalScrollBar();
1017 QScrollBar *vscrollbar = scrollarea_->verticalScrollBar();
1019 const QSize areaSize = viewport_->size();
1021 // Set the horizontal scroll bar
1024 get_scroll_layout(length, offset);
1025 length = max(length - areaSize.width(), 0.0);
1027 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
1029 hscrollbar->setPageStep(areaSize.width() / 2);
1030 hscrollbar->setSingleStep(major_tick_distance);
1032 updating_scroll_ = true;
1034 if (length < MaxScrollValue) {
1035 hscrollbar->setRange(0, length);
1036 hscrollbar->setSliderPosition(offset.convert_to<double>());
1038 hscrollbar->setRange(0, MaxScrollValue);
1039 hscrollbar->setSliderPosition(
1040 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
1043 updating_scroll_ = false;
1045 // Set the vertical scrollbar
1046 vscrollbar->setPageStep(areaSize.height());
1047 vscrollbar->setSingleStep(areaSize.height() / 8);
1049 const pair<int, int> extents = v_extents();
1051 // Don't change the scrollbar range if there are no traces
1052 if (extents.first != extents.second)
1053 vscrollbar->setRange(extents.first - areaSize.height(),
1056 if (scroll_needs_defaults_) {
1057 set_scroll_default();
1058 scroll_needs_defaults_ = false;
1062 void View::reset_scroll()
1064 scrollarea_->verticalScrollBar()->setRange(0, 0);
1067 void View::set_scroll_default()
1071 const QSize areaSize = viewport_->size();
1073 const pair<int, int> extents = v_extents();
1074 const int trace_height = extents.second - extents.first;
1076 // Do all traces fit in the view?
1077 if (areaSize.height() >= trace_height)
1078 // Center all traces vertically
1079 set_v_offset(extents.first -
1080 ((areaSize.height() - trace_height) / 2));
1082 // Put the first trace at the top, letting the bottom ones overflow
1083 set_v_offset(extents.first);
1086 void View::determine_if_header_was_shrunk()
1088 const int header_pane_width = splitter_->sizes().front();
1089 const int header_width = header_->extended_size_hint().width();
1091 // Allow for a slight margin of error so that we also accept
1092 // slight differences when e.g. a label name change increased
1093 // the overall width
1094 header_was_shrunk_ = (header_pane_width < (header_width - 10));
1097 void View::resize_header_to_fit()
1099 // Setting the maximum width of the header widget doesn't work as
1100 // expected because the splitter would allow the user to make the
1101 // pane wider than that, creating empty space as a result.
1102 // To make this work, we stricly enforce the maximum width by
1103 // expanding the header unless the user shrunk it on purpose.
1104 // As we're then setting the width of the header pane, we set the
1105 // splitter to the maximum allowed position.
1107 int splitter_area_width = 0;
1108 for (int w : splitter_->sizes())
1109 splitter_area_width += w;
1111 // Make sure the header has enough horizontal space to show all labels fully
1112 QList<int> pane_sizes;
1113 pane_sizes.push_back(header_->extended_size_hint().width());
1114 pane_sizes.push_back(splitter_area_width - header_->extended_size_hint().width());
1115 splitter_->setSizes(pane_sizes);
1118 void View::update_layout()
1123 TraceTreeItemOwner* View::find_prevalent_trace_group(
1124 const shared_ptr<sigrok::ChannelGroup> &group,
1125 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1130 unordered_set<TraceTreeItemOwner*> owners;
1131 vector<TraceTreeItemOwner*> owner_list;
1133 // Make a set and a list of all the owners
1134 for (const auto &channel : group->channels()) {
1135 for (auto entry : signal_map) {
1136 if (entry.first->channel() == channel) {
1137 TraceTreeItemOwner *const o = (entry.second)->owner();
1138 owner_list.push_back(o);
1144 // Iterate through the list of owners, and find the most prevalent
1145 size_t max_prevalence = 0;
1146 TraceTreeItemOwner *prevalent_owner = nullptr;
1147 for (TraceTreeItemOwner *owner : owners) {
1148 const size_t prevalence = count_if(
1149 owner_list.begin(), owner_list.end(),
1150 [&](TraceTreeItemOwner *o) { return o == owner; });
1151 if (prevalence > max_prevalence) {
1152 max_prevalence = prevalence;
1153 prevalent_owner = owner;
1157 return prevalent_owner;
1160 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
1161 const vector< shared_ptr<sigrok::Channel> > &channels,
1162 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1164 set< shared_ptr<Trace> > &add_list)
1166 vector< shared_ptr<Trace> > filtered_traces;
1168 for (const auto &channel : channels) {
1169 for (auto entry : signal_map) {
1170 if (entry.first->channel() == channel) {
1171 shared_ptr<Trace> trace = entry.second;
1172 const auto list_iter = add_list.find(trace);
1173 if (list_iter == add_list.end())
1176 filtered_traces.push_back(trace);
1177 add_list.erase(list_iter);
1182 return filtered_traces;
1185 void View::determine_time_unit()
1187 // Check whether we know the sample rate and hence can use time as the unit
1188 if (time_unit_ == util::TimeUnit::Samples) {
1189 // Check all signals but...
1190 for (const shared_ptr<Signal> signal : signals_) {
1191 const shared_ptr<SignalData> data = signal->data();
1193 // ...only check first segment of each
1194 const vector< shared_ptr<Segment> > segments = data->segments();
1195 if (!segments.empty())
1196 if (segments[0]->samplerate()) {
1197 set_time_unit(util::TimeUnit::Time);
1204 bool View::eventFilter(QObject *object, QEvent *event)
1206 const QEvent::Type type = event->type();
1207 if (type == QEvent::MouseMove) {
1209 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1210 if (object == viewport_)
1211 hover_point_ = mouse_event->pos();
1212 else if (object == ruler_)
1213 hover_point_ = QPoint(mouse_event->x(), 0);
1214 else if (object == header_)
1215 hover_point_ = QPoint(0, mouse_event->y());
1217 hover_point_ = QPoint(-1, -1);
1219 update_hover_point();
1221 } else if (type == QEvent::Leave) {
1222 hover_point_ = QPoint(-1, -1);
1223 update_hover_point();
1224 } else if (type == QEvent::Show) {
1226 // This is somewhat of a hack, unfortunately. We cannot use
1227 // set_v_offset() from within restore_settings() as the view
1228 // at that point is neither visible nor properly sized.
1229 // This is the least intrusive workaround I could come up
1230 // with: set the vertical offset (or scroll defaults) when
1231 // the view is shown, which happens after all widgets were
1232 // resized to their final sizes.
1235 if (settings_restored_)
1236 determine_if_header_was_shrunk();
1238 resize_header_to_fit();
1240 if (scroll_needs_defaults_) {
1241 set_scroll_default();
1242 scroll_needs_defaults_ = false;
1245 if (saved_v_offset_) {
1246 set_v_offset(saved_v_offset_);
1247 saved_v_offset_ = 0;
1251 return QObject::eventFilter(object, event);
1254 void View::resizeEvent(QResizeEvent* event)
1256 // Only adjust the top margin if we shrunk vertically
1257 if (event->size().height() < event->oldSize().height())
1258 adjust_top_margin();
1263 void View::update_hover_point()
1265 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1266 list_by_type<TraceTreeItem>());
1267 for (shared_ptr<TraceTreeItem> r : trace_tree_items)
1268 r->hover_point_changed(hover_point_);
1270 hover_point_changed(hover_point_);
1273 void View::row_item_appearance_changed(bool label, bool content)
1278 viewport_->update();
1281 void View::time_item_appearance_changed(bool label, bool content)
1286 // Make sure the header pane width is updated, too
1291 viewport_->update();
1294 void View::extents_changed(bool horz, bool vert)
1297 (horz ? TraceTreeItemHExtentsChanged : 0) |
1298 (vert ? TraceTreeItemVExtentsChanged : 0);
1300 lazy_event_handler_.start();
1303 void View::on_signal_name_changed()
1305 if (!header_was_shrunk_)
1306 resize_header_to_fit();
1309 void View::on_splitter_moved()
1311 // The header can only shrink when the splitter is moved manually
1312 determine_if_header_was_shrunk();
1314 if (!header_was_shrunk_)
1315 resize_header_to_fit();
1318 void View::h_scroll_value_changed(int value)
1320 if (updating_scroll_)
1323 // Disable sticky scrolling when user moves the horizontal scroll bar
1324 // during a running acquisition
1325 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1326 sticky_scrolling_ = false;
1327 sticky_scrolling_changed(false);
1330 const int range = scrollarea_->horizontalScrollBar()->maximum();
1331 if (range < MaxScrollValue)
1332 set_offset(scale_ * value);
1336 get_scroll_layout(length, offset);
1337 set_offset(scale_ * length * value / MaxScrollValue);
1341 viewport_->update();
1344 void View::v_scroll_value_changed()
1347 viewport_->update();
1350 void View::signals_changed()
1352 using sigrok::Channel;
1354 vector< shared_ptr<Channel> > channels;
1355 shared_ptr<sigrok::Device> sr_dev;
1356 bool signals_added_or_removed = false;
1358 // Do we need to set the vertical scrollbar to its default position later?
1359 // We do if there are no traces, i.e. the scroll bar has no range set
1360 bool reset_scrollbar =
1361 (scrollarea_->verticalScrollBar()->minimum() ==
1362 scrollarea_->verticalScrollBar()->maximum());
1364 if (!session_.device()) {
1368 sr_dev = session_.device()->device();
1370 channels = sr_dev->channels();
1373 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1375 // Make a list of traces that are being added, and a list of traces
1376 // that are being removed
1377 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1378 const set<shared_ptr<Trace>> prev_traces(
1379 prev_trace_list.begin(), prev_trace_list.end());
1381 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1383 #ifdef ENABLE_DECODE
1384 traces.insert(decode_traces_.begin(), decode_traces_.end());
1387 set< shared_ptr<Trace> > add_traces;
1388 set_difference(traces.begin(), traces.end(),
1389 prev_traces.begin(), prev_traces.end(),
1390 inserter(add_traces, add_traces.begin()));
1392 set< shared_ptr<Trace> > remove_traces;
1393 set_difference(prev_traces.begin(), prev_traces.end(),
1394 traces.begin(), traces.end(),
1395 inserter(remove_traces, remove_traces.begin()));
1397 // Make a look-up table of sigrok Channels to pulseview Signals
1398 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1400 for (const shared_ptr<Signal> &sig : signals_)
1401 signal_map[sig->base()] = sig;
1403 // Populate channel groups
1405 for (auto entry : sr_dev->channel_groups()) {
1406 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1408 if (group->channels().size() <= 1)
1411 // Find best trace group to add to
1412 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1415 // If there is no trace group, create one
1416 shared_ptr<TraceGroup> new_trace_group;
1418 new_trace_group.reset(new TraceGroup());
1419 owner = new_trace_group.get();
1422 // Extract traces for the trace group, removing them from
1424 const vector< shared_ptr<Trace> > new_traces_in_group =
1425 extract_new_traces_for_channels(group->channels(),
1426 signal_map, add_traces);
1428 // Add the traces to the group
1429 const pair<int, int> prev_v_extents = owner->v_extents();
1430 int offset = prev_v_extents.second - prev_v_extents.first;
1431 for (shared_ptr<Trace> trace : new_traces_in_group) {
1433 owner->add_child_item(trace);
1435 const pair<int, int> extents = trace->v_extents();
1436 if (trace->enabled())
1437 offset += -extents.first;
1438 trace->force_to_v_offset(offset);
1439 if (trace->enabled())
1440 offset += extents.second;
1443 if (new_trace_group) {
1444 // Assign proper vertical offsets to each channel in the group
1445 new_trace_group->restack_items();
1447 // If this is a new group, enqueue it in the new top level
1449 if (!new_traces_in_group.empty())
1450 new_top_level_items.push_back(new_trace_group);
1454 // Enqueue the remaining logic channels in a group
1455 vector< shared_ptr<Channel> > logic_channels;
1456 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1457 [](const shared_ptr<Channel>& c) {
1458 return c->type() == sigrok::ChannelType::LOGIC; });
1460 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1461 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1463 if (non_grouped_logic_signals.size() > 0) {
1464 const shared_ptr<TraceGroup> non_grouped_trace_group(
1465 make_shared<TraceGroup>());
1466 for (shared_ptr<Trace> trace : non_grouped_logic_signals)
1467 non_grouped_trace_group->add_child_item(trace);
1469 non_grouped_trace_group->restack_items();
1470 new_top_level_items.push_back(non_grouped_trace_group);
1473 // Enqueue the remaining channels as free ungrouped traces
1474 const vector< shared_ptr<Trace> > new_top_level_signals =
1475 extract_new_traces_for_channels(channels, signal_map, add_traces);
1476 new_top_level_items.insert(new_top_level_items.end(),
1477 new_top_level_signals.begin(), new_top_level_signals.end());
1479 // Enqueue any remaining traces i.e. decode traces
1480 new_top_level_items.insert(new_top_level_items.end(),
1481 add_traces.begin(), add_traces.end());
1483 // Remove any removed traces
1484 for (shared_ptr<Trace> trace : remove_traces) {
1485 TraceTreeItemOwner *const owner = trace->owner();
1487 owner->remove_child_item(trace);
1488 signals_added_or_removed = true;
1491 // Remove any empty trace groups
1492 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1493 if (group->child_items().size() == 0) {
1494 remove_child_item(group);
1498 // Add and position the pending top levels items
1499 int offset = v_extents().second;
1500 for (auto item : new_top_level_items) {
1501 add_child_item(item);
1503 // Position the item after the last item or at the top if there is none
1504 const pair<int, int> extents = item->v_extents();
1506 if (item->enabled())
1507 offset += -extents.first;
1509 item->force_to_v_offset(offset);
1511 if (item->enabled())
1512 offset += extents.second;
1513 signals_added_or_removed = true;
1517 if (signals_added_or_removed && !header_was_shrunk_)
1518 resize_header_to_fit();
1523 viewport_->update();
1525 if (reset_scrollbar)
1526 set_scroll_default();
1529 void View::capture_state_updated(int state)
1531 GlobalSettings settings;
1533 if (state == Session::Running) {
1534 set_time_unit(util::TimeUnit::Samples);
1536 trigger_markers_.clear();
1538 scale_at_acq_start_ = scale_;
1539 offset_at_acq_start_ = offset_;
1541 // Activate "always zoom to fit" if the setting is enabled and we're
1542 // the main view of this session (other trace views may be used for
1543 // zooming and we don't want to mess them up)
1544 bool state = settings.value(GlobalSettings::Key_View_ZoomToFitDuringAcq).toBool();
1545 if (is_main_view_ && state) {
1546 always_zoom_to_fit_ = true;
1547 always_zoom_to_fit_changed(always_zoom_to_fit_);
1550 // Enable sticky scrolling if the setting is enabled
1551 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
1553 // Reset all traces to segment 0
1554 current_segment_ = 0;
1555 set_current_segment(current_segment_);
1558 if (state == Session::Stopped) {
1559 // After acquisition has stopped we need to re-calculate the ticks once
1560 // as it's otherwise done when the user pans or zooms, which is too late
1561 calculate_tick_spacing();
1563 // Reset "always zoom to fit", the acquisition has stopped
1564 if (always_zoom_to_fit_) {
1565 // Perform a final zoom-to-fit before disabling
1566 zoom_fit(always_zoom_to_fit_);
1567 always_zoom_to_fit_ = false;
1568 always_zoom_to_fit_changed(always_zoom_to_fit_);
1571 bool zoom_to_fit_after_acq =
1572 settings.value(GlobalSettings::Key_View_ZoomToFitAfterAcq).toBool();
1574 // Only perform zoom-to-fit if the user hasn't altered the viewport and
1575 // we didn't restore settings in the meanwhile
1576 if (zoom_to_fit_after_acq &&
1577 !suppress_zoom_to_fit_after_acq_ &&
1578 (scale_ == scale_at_acq_start_) &&
1579 (offset_ == offset_at_acq_start_))
1580 zoom_fit(false); // We're stopped, so the GUI state doesn't matter
1582 suppress_zoom_to_fit_after_acq_ = false;
1586 void View::on_new_segment(int new_segment_id)
1588 on_segment_changed(new_segment_id);
1591 void View::on_segment_completed(int segment_id)
1593 on_segment_changed(segment_id);
1596 void View::on_segment_changed(int segment)
1598 switch (segment_display_mode_) {
1599 case Trace::ShowLastSegmentOnly:
1600 case Trace::ShowSingleSegmentOnly:
1601 set_current_segment(segment);
1604 case Trace::ShowLastCompleteSegmentOnly:
1605 // Only update if all segments are complete
1606 if (session_.all_segments_complete(segment))
1607 set_current_segment(segment);
1610 case Trace::ShowAllSegments:
1611 case Trace::ShowAccumulatedIntensity:
1617 void View::on_settingViewTriggerIsZeroTime_changed(const QVariant new_value)
1619 if (new_value.toBool()) {
1620 // The first trigger for this segment is used as the zero position
1621 vector<util::Timestamp> triggers = session_.get_triggers(current_segment_);
1622 if (triggers.size() > 0)
1623 set_zero_position(triggers.front());
1625 reset_zero_position();
1628 void View::perform_delayed_view_update()
1630 if (always_zoom_to_fit_) {
1632 } else if (sticky_scrolling_) {
1633 // Make right side of the view sticky
1636 get_scroll_layout(length, offset);
1638 const QSize areaSize = viewport_->size();
1639 length = max(length - areaSize.width(), 0.0);
1641 set_offset(scale_ * length);
1644 determine_time_unit();
1647 viewport_->update();
1650 void View::process_sticky_events()
1652 if (sticky_events_ & TraceTreeItemHExtentsChanged)
1654 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
1655 restack_all_trace_tree_items();
1659 // Clear the sticky events
1663 } // namespace trace
1664 } // namespace views