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, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #include <libsigrokdecode/libsigrokdecode.h>
33 #include <unordered_set>
35 #include <boost/thread/locks.hpp>
37 #include <QApplication>
39 #include <QFontMetrics>
40 #include <QMouseEvent>
43 #include <libsigrokcxx/libsigrokcxx.hpp>
45 #include "analogsignal.hpp"
47 #include "logicsignal.hpp"
50 #include "tracegroup.hpp"
51 #include "triggermarker.hpp"
53 #include "viewport.hpp"
55 #include "pv/session.hpp"
56 #include "pv/devices/device.hpp"
57 #include "pv/data/logic.hpp"
58 #include "pv/data/logicsegment.hpp"
59 #include "pv/util.hpp"
62 #include "decodetrace.hpp"
65 using boost::shared_lock;
66 using boost::shared_mutex;
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;
76 using std::dynamic_pointer_cast;
79 using std::lock_guard;
82 using std::make_shared;
86 using std::set_difference;
87 using std::shared_ptr;
88 using std::unordered_map;
89 using std::unordered_set;
96 const Timestamp View::MaxScale("1e9");
97 const Timestamp View::MinScale("1e-12");
99 const int View::MaxScrollValue = INT_MAX / 2;
100 const int View::MaxViewAutoUpdateRate = 25; // No more than 25 Hz with sticky scrolling
102 const int View::ScaleUnits[3] = {1, 2, 5};
104 View::View(Session &session, QWidget *parent) :
105 QAbstractScrollArea(parent),
107 viewport_(new Viewport(*this)),
108 ruler_(new Ruler(*this)),
109 header_(new Header(*this)),
112 updating_scroll_(false),
113 sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui()
114 always_zoom_to_fit_(false),
116 tick_prefix_(pv::util::SIPrefix::yocto),
118 time_unit_(util::TimeUnit::Time),
119 show_cursors_(false),
120 cursors_(new CursorPair(*this)),
121 next_flag_text_('A'),
125 connect(horizontalScrollBar(), SIGNAL(valueChanged(int)),
126 this, SLOT(h_scroll_value_changed(int)));
127 connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
128 this, SLOT(v_scroll_value_changed()));
130 connect(&session_, SIGNAL(signals_changed()),
131 this, SLOT(signals_changed()));
132 connect(&session_, SIGNAL(capture_state_changed(int)),
133 this, SLOT(capture_state_updated(int)));
134 connect(&session_, SIGNAL(data_received()),
135 this, SLOT(data_updated()));
136 connect(&session_, SIGNAL(frame_ended()),
137 this, SLOT(data_updated()));
139 connect(header_, SIGNAL(selection_changed()),
140 ruler_, SLOT(clear_selection()));
141 connect(ruler_, SIGNAL(selection_changed()),
142 header_, SLOT(clear_selection()));
144 connect(header_, SIGNAL(selection_changed()),
145 this, SIGNAL(selection_changed()));
146 connect(ruler_, SIGNAL(selection_changed()),
147 this, SIGNAL(selection_changed()));
149 connect(this, SIGNAL(hover_point_changed()),
150 this, SLOT(on_hover_point_changed()));
152 connect(&lazy_event_handler_, SIGNAL(timeout()),
153 this, SLOT(process_sticky_events()));
154 lazy_event_handler_.setSingleShot(true);
156 connect(&delayed_view_updater_, SIGNAL(timeout()),
157 this, SLOT(perform_delayed_view_update()));
158 delayed_view_updater_.setSingleShot(true);
159 delayed_view_updater_.setInterval(1000 / MaxViewAutoUpdateRate);
161 setViewport(viewport_);
163 viewport_->installEventFilter(this);
164 ruler_->installEventFilter(this);
165 header_->installEventFilter(this);
167 // Trigger the initial event manually. The default device has signals
168 // which were created before this object came into being
171 // make sure the transparent widgets are on the top
175 // Update the zoom state
176 calculate_tick_spacing();
179 Session& View::session()
184 const Session& View::session() const
194 const View* View::view() const
199 Viewport* View::viewport()
204 const Viewport* View::viewport() const
209 vector< shared_ptr<TimeItem> > View::time_items() const
211 const vector<shared_ptr<Flag>> f(flags());
212 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
213 items.push_back(cursors_);
214 items.push_back(cursors_->first());
215 items.push_back(cursors_->second());
217 for (auto trigger_marker : trigger_markers_)
218 items.push_back(trigger_marker);
223 double View::scale() const
228 void View::set_scale(double scale)
230 if (scale_ != scale) {
232 Q_EMIT scale_changed();
236 const Timestamp& View::offset() const
241 void View::set_offset(const pv::util::Timestamp& offset)
243 if (offset_ != offset) {
245 Q_EMIT offset_changed();
249 int View::owner_visual_v_offset() const
251 return -verticalScrollBar()->sliderPosition();
254 void View::set_v_offset(int offset)
256 verticalScrollBar()->setSliderPosition(offset);
261 unsigned int View::depth() const
266 pv::util::SIPrefix View::tick_prefix() const
271 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
273 if (tick_prefix_ != tick_prefix) {
274 tick_prefix_ = tick_prefix;
275 Q_EMIT tick_prefix_changed();
279 unsigned int View::tick_precision() const
281 return tick_precision_;
284 void View::set_tick_precision(unsigned tick_precision)
286 if (tick_precision_ != tick_precision) {
287 tick_precision_ = tick_precision;
288 Q_EMIT tick_precision_changed();
292 const pv::util::Timestamp& View::tick_period() const
297 void View::set_tick_period(const pv::util::Timestamp& tick_period)
299 if (tick_period_ != tick_period) {
300 tick_period_ = tick_period;
301 Q_EMIT tick_period_changed();
305 TimeUnit View::time_unit() const
310 void View::set_time_unit(pv::util::TimeUnit time_unit)
312 if (time_unit_ != time_unit) {
313 time_unit_ = time_unit;
314 Q_EMIT time_unit_changed();
318 void View::zoom(double steps)
320 zoom(steps, viewport_->width() / 2);
323 void View::zoom(double steps, int offset)
325 set_zoom(scale_ * pow(3.0/2.0, -steps), offset);
328 void View::zoom_fit(bool gui_state)
330 // Act as one-shot when stopped, toggle along with the GUI otherwise
331 if (session_.get_capture_state() == Session::Stopped) {
332 always_zoom_to_fit_ = false;
333 always_zoom_to_fit_changed(false);
335 always_zoom_to_fit_ = gui_state;
336 always_zoom_to_fit_changed(gui_state);
339 const pair<Timestamp, Timestamp> extents = get_time_extents();
340 const Timestamp delta = extents.second - extents.first;
341 if (delta < Timestamp("1e-12"))
345 const int w = viewport_->width();
349 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
350 set_scale_offset(scale.convert_to<double>(), extents.first);
353 void View::zoom_one_to_one()
355 using pv::data::SignalData;
357 // Make a set of all the visible data objects
358 set< shared_ptr<SignalData> > visible_data = get_visible_data();
359 if (visible_data.empty())
363 const int w = viewport_->width();
367 set_zoom(1.0 / session_.get_samplerate(), w / 2);
370 void View::set_scale_offset(double scale, const Timestamp& offset)
372 // Disable sticky scrolling / always zoom to fit when acquisition runs
373 // and user drags the viewport
374 if ((scale_ == scale) && (offset_ != offset) &&
375 (session_.get_capture_state() == Session::Running)) {
377 if (sticky_scrolling_) {
378 sticky_scrolling_ = false;
379 sticky_scrolling_changed(false);
382 if (always_zoom_to_fit_) {
383 always_zoom_to_fit_ = false;
384 always_zoom_to_fit_changed(false);
391 calculate_tick_spacing();
398 set< shared_ptr<SignalData> > View::get_visible_data() const
400 const unordered_set< shared_ptr<Signal> > sigs(session().signals());
402 // Make a set of all the visible data objects
403 set< shared_ptr<SignalData> > visible_data;
404 for (const shared_ptr<Signal> sig : sigs)
406 visible_data.insert(sig->data());
411 pair<Timestamp, Timestamp> View::get_time_extents() const
413 boost::optional<Timestamp> left_time, right_time;
414 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
415 for (const shared_ptr<SignalData> d : visible_data) {
416 const vector< shared_ptr<Segment> > segments =
418 for (const shared_ptr<Segment> &s : segments) {
419 double samplerate = s->samplerate();
420 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
422 const Timestamp start_time = s->start_time();
423 left_time = left_time ?
424 min(*left_time, start_time) :
426 right_time = right_time ?
427 max(*right_time, start_time + d->max_sample_count() / samplerate) :
428 start_time + d->max_sample_count() / samplerate;
432 if (!left_time || !right_time)
433 return make_pair(0, 0);
435 assert(*left_time < *right_time);
436 return make_pair(*left_time, *right_time);
439 void View::enable_sticky_scrolling(bool state)
441 sticky_scrolling_ = state;
444 void View::enable_coloured_bg(bool state)
446 const vector<shared_ptr<TraceTreeItem>> items(
447 list_by_type<TraceTreeItem>());
449 for (shared_ptr<TraceTreeItem> i : items) {
450 // Can't cast to Trace because it's abstract, so we need to
451 // check for any derived classes individually
453 shared_ptr<AnalogSignal> a = dynamic_pointer_cast<AnalogSignal>(i);
455 a->set_coloured_bg(state);
457 shared_ptr<LogicSignal> l = dynamic_pointer_cast<LogicSignal>(i);
459 l->set_coloured_bg(state);
462 shared_ptr<DecodeTrace> d = dynamic_pointer_cast<DecodeTrace>(i);
464 d->set_coloured_bg(state);
471 bool View::cursors_shown() const
473 return show_cursors_;
476 void View::show_cursors(bool show)
478 show_cursors_ = show;
483 void View::centre_cursors()
485 const double time_width = scale_ * viewport_->width();
486 cursors_->first()->set_time(offset_ + time_width * 0.4);
487 cursors_->second()->set_time(offset_ + time_width * 0.6);
492 std::shared_ptr<CursorPair> View::cursors() const
497 void View::add_flag(const Timestamp& time)
499 flags_.push_back(shared_ptr<Flag>(new Flag(*this, time,
500 QString("%1").arg(next_flag_text_))));
502 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
503 (next_flag_text_ + 1);
505 time_item_appearance_changed(true, true);
508 void View::remove_flag(std::shared_ptr<Flag> flag)
511 time_item_appearance_changed(true, true);
514 vector< std::shared_ptr<Flag> > View::flags() const
516 vector< std::shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
517 stable_sort(flags.begin(), flags.end(),
518 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
519 return a->time() < b->time();
525 const QPoint& View::hover_point() const
530 void View::update_viewport()
537 void View::restack_all_trace_tree_items()
539 // Make a list of owners that is sorted from deepest first
540 const vector<shared_ptr<TraceTreeItem>> items(
541 list_by_type<TraceTreeItem>());
542 set< TraceTreeItemOwner* > owners;
543 for (const auto &r : items)
544 owners.insert(r->owner());
545 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
546 sort(sorted_owners.begin(), sorted_owners.end(),
547 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
548 return a->depth() > b->depth(); });
550 // Restack the items recursively
551 for (auto &o : sorted_owners)
554 // Re-assign background colors
555 bool next_bgcolour_state = 0;
557 for (auto &o : sorted_owners)
558 next_bgcolour_state = o->reassign_bgcolour_states(next_bgcolour_state);
560 // Animate the items to their destination
561 for (const auto &i : items)
562 i->animate_to_layout_v_offset();
565 void View::trigger_event(util::Timestamp location)
567 trigger_markers_.push_back(shared_ptr<TriggerMarker>(
568 new TriggerMarker(*this, location)));
571 void View::get_scroll_layout(double &length, Timestamp &offset) const
573 const pair<Timestamp, Timestamp> extents = get_time_extents();
574 length = ((extents.second - extents.first) / scale_).convert_to<double>();
575 offset = offset_ / scale_;
578 void View::set_zoom(double scale, int offset)
580 // Reset the "always zoom to fit" feature as the user changed the zoom
581 always_zoom_to_fit_ = false;
582 always_zoom_to_fit_changed(false);
584 const Timestamp cursor_offset = offset_ + scale_ * offset;
585 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
586 const Timestamp new_offset = cursor_offset - new_scale * offset;
587 set_scale_offset(new_scale.convert_to<double>(), new_offset);
590 void View::calculate_tick_spacing()
592 const double SpacingIncrement = 10.0f;
593 const double MinValueSpacing = 40.0f;
595 // Figure out the highest numeric value visible on a label
596 const QSize areaSize = viewport_->size();
597 const Timestamp max_time = max(fabs(offset_),
598 fabs(offset_ + scale_ * areaSize.width()));
600 double min_width = SpacingIncrement;
601 double label_width, tick_period_width;
603 QFontMetrics m(QApplication::font());
605 // Copies of the member variables with the same name, used in the calculation
606 // and written back afterwards, so that we don't emit signals all the time
607 // during the calculation.
608 pv::util::Timestamp tick_period = tick_period_;
609 pv::util::SIPrefix tick_prefix = tick_prefix_;
610 unsigned tick_precision = tick_precision_;
613 const double min_period = scale_ * min_width;
615 const int order = (int)floorf(log10f(min_period));
616 const pv::util::Timestamp order_decimal =
617 pow(pv::util::Timestamp(10), order);
619 // Allow for a margin of error so that a scale unit of 1 can be used.
620 // Otherwise, for a SU of 1 the tick period will almost always be below
621 // the min_period by a small amount - and thus skipped in favor of 2.
622 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
623 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
624 double tp_with_margin;
625 unsigned int unit = 0;
628 tp_with_margin = order_decimal.convert_to<double>() *
629 (ScaleUnits[unit++] + tp_margin);
630 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
632 tick_period = order_decimal * ScaleUnits[unit - 1];
633 tick_prefix = static_cast<pv::util::SIPrefix>(
634 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
636 // Precision is the number of fractional digits required, not
637 // taking the prefix into account (and it must never be negative)
638 tick_precision = std::max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
640 tick_period_width = (tick_period / scale_).convert_to<double>();
642 const QString label_text = Ruler::format_time_with_distance(
643 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
645 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
646 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
649 min_width += SpacingIncrement;
650 } while (tick_period_width < label_width);
652 set_tick_period(tick_period);
653 set_tick_prefix(tick_prefix);
654 set_tick_precision(tick_precision);
657 void View::update_scroll()
661 const QSize areaSize = viewport_->size();
663 // Set the horizontal scroll bar
666 get_scroll_layout(length, offset);
667 length = max(length - areaSize.width(), 0.0);
669 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
671 horizontalScrollBar()->setPageStep(areaSize.width() / 2);
672 horizontalScrollBar()->setSingleStep(major_tick_distance);
674 updating_scroll_ = true;
676 if (length < MaxScrollValue) {
677 horizontalScrollBar()->setRange(0, length);
678 horizontalScrollBar()->setSliderPosition(offset.convert_to<double>());
680 horizontalScrollBar()->setRange(0, MaxScrollValue);
681 horizontalScrollBar()->setSliderPosition(
682 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
685 updating_scroll_ = false;
687 // Set the vertical scrollbar
688 verticalScrollBar()->setPageStep(areaSize.height());
689 verticalScrollBar()->setSingleStep(areaSize.height() / 8);
691 const pair<int, int> extents = v_extents();
693 // Don't change the scrollbar range if there are no traces
694 if (extents.first != extents.second)
695 verticalScrollBar()->setRange(extents.first - areaSize.height(),
698 if (scroll_needs_defaults)
699 set_scroll_default();
702 void View::reset_scroll()
704 verticalScrollBar()->setRange(0, 0);
707 void View::set_scroll_default()
711 const QSize areaSize = viewport_->size();
713 // Special case: when starting up and the window isn't visible yet,
714 // areaSize is [0, 0]. In this case we want to be called again later
715 if (areaSize.height() == 0) {
716 scroll_needs_defaults = true;
719 scroll_needs_defaults = false;
722 const pair<int, int> extents = v_extents();
723 const int trace_height = extents.second - extents.first;
725 // Do all traces fit in the view?
726 if (areaSize.height() >= trace_height)
727 // Center all traces vertically
728 set_v_offset(extents.first -
729 ((areaSize.height() - trace_height) / 2));
731 // Put the first trace at the top, letting the bottom ones overflow
732 set_v_offset(extents.first);
735 void View::update_layout()
738 header_->sizeHint().width() - pv::view::Header::BaselineOffset,
739 ruler_->sizeHint().height(), 0, 0);
740 ruler_->setGeometry(viewport_->x(), 0,
741 viewport_->width(), ruler_->extended_size_hint().height());
742 header_->setGeometry(0, viewport_->y(),
743 header_->extended_size_hint().width(), viewport_->height());
747 void View::paint_label(QPainter &p, const QRect &rect, bool hover)
754 QRectF View::label_rect(const QRectF &rect)
760 TraceTreeItemOwner* View::find_prevalent_trace_group(
761 const shared_ptr<sigrok::ChannelGroup> &group,
762 const unordered_map<shared_ptr<sigrok::Channel>, shared_ptr<Signal> >
767 unordered_set<TraceTreeItemOwner*> owners;
768 vector<TraceTreeItemOwner*> owner_list;
770 // Make a set and a list of all the owners
771 for (const auto &channel : group->channels()) {
772 const auto iter = signal_map.find(channel);
773 if (iter == signal_map.end())
776 TraceTreeItemOwner *const o = (*iter).second->owner();
777 owner_list.push_back(o);
781 // Iterate through the list of owners, and find the most prevalent
782 size_t max_prevalence = 0;
783 TraceTreeItemOwner *prevalent_owner = nullptr;
784 for (TraceTreeItemOwner *owner : owners) {
785 const size_t prevalence = std::count_if(
786 owner_list.begin(), owner_list.end(),
787 [&](TraceTreeItemOwner *o) { return o == owner; });
788 if (prevalence > max_prevalence) {
789 max_prevalence = prevalence;
790 prevalent_owner = owner;
794 return prevalent_owner;
797 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
798 const vector< shared_ptr<sigrok::Channel> > &channels,
799 const unordered_map<shared_ptr<sigrok::Channel>, shared_ptr<Signal> >
801 set< shared_ptr<Trace> > &add_list)
803 vector< shared_ptr<Trace> > filtered_traces;
805 for (const auto &channel : channels) {
806 const auto map_iter = signal_map.find(channel);
807 if (map_iter == signal_map.end())
810 shared_ptr<Trace> trace = (*map_iter).second;
811 const auto list_iter = add_list.find(trace);
812 if (list_iter == add_list.end())
815 filtered_traces.push_back(trace);
816 add_list.erase(list_iter);
819 return filtered_traces;
822 void View::determine_time_unit()
824 // Check whether we know the sample rate and hence can use time as the unit
825 if (time_unit_ == util::TimeUnit::Samples) {
826 const unordered_set< shared_ptr<Signal> > sigs(session().signals());
828 // Check all signals but...
829 for (const shared_ptr<Signal> signal : sigs) {
830 const shared_ptr<SignalData> data = signal->data();
832 // ...only check first segment of each
833 const vector< shared_ptr<Segment> > segments = data->segments();
834 if (!segments.empty())
835 if (segments[0]->samplerate()) {
836 set_time_unit(util::TimeUnit::Time);
843 bool View::eventFilter(QObject *object, QEvent *event)
845 const QEvent::Type type = event->type();
846 if (type == QEvent::MouseMove) {
848 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
849 if (object == viewport_)
850 hover_point_ = mouse_event->pos();
851 else if (object == ruler_)
852 hover_point_ = QPoint(mouse_event->x(), 0);
853 else if (object == header_)
854 hover_point_ = QPoint(0, mouse_event->y());
856 hover_point_ = QPoint(-1, -1);
858 hover_point_changed();
860 } else if (type == QEvent::Leave) {
861 hover_point_ = QPoint(-1, -1);
862 hover_point_changed();
865 return QObject::eventFilter(object, event);
868 bool View::viewportEvent(QEvent *event)
870 switch (event->type()) {
872 case QEvent::MouseButtonPress:
873 case QEvent::MouseButtonRelease:
874 case QEvent::MouseButtonDblClick:
875 case QEvent::MouseMove:
877 case QEvent::TouchBegin:
878 case QEvent::TouchUpdate:
879 case QEvent::TouchEnd:
882 return QAbstractScrollArea::viewportEvent(event);
886 void View::resizeEvent(QResizeEvent*)
891 void View::row_item_appearance_changed(bool label, bool content)
899 void View::time_item_appearance_changed(bool label, bool content)
907 void View::extents_changed(bool horz, bool vert)
910 (horz ? TraceTreeItemHExtentsChanged : 0) |
911 (vert ? TraceTreeItemVExtentsChanged : 0);
912 lazy_event_handler_.start();
915 void View::h_scroll_value_changed(int value)
917 if (updating_scroll_)
920 // Disable sticky scrolling when user moves the horizontal scroll bar
921 // during a running acquisition
922 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
923 sticky_scrolling_ = false;
924 sticky_scrolling_changed(false);
927 const int range = horizontalScrollBar()->maximum();
928 if (range < MaxScrollValue)
929 set_offset(scale_ * value);
933 get_scroll_layout(length, offset);
934 set_offset(scale_ * length * value / MaxScrollValue);
941 void View::v_scroll_value_changed()
947 void View::signals_changed()
949 using sigrok::Channel;
951 vector< shared_ptr<Channel> > channels;
952 shared_ptr<sigrok::Device> sr_dev;
954 // Do we need to set the vertical scrollbar to its default position later?
955 // We do if there are no traces, i.e. the scroll bar has no range set
956 bool reset_scrollbar =
957 verticalScrollBar()->minimum() == verticalScrollBar()->maximum();
959 if (!session_.device()) {
963 sr_dev = session_.device()->device();
964 channels = sr_dev->channels();
967 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
969 // Make a list of traces that are being added, and a list of traces
970 // that are being removed
971 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
972 const set<shared_ptr<Trace>> prev_traces(
973 prev_trace_list.begin(), prev_trace_list.end());
975 const unordered_set< shared_ptr<Signal> > sigs(session_.signals());
977 set< shared_ptr<Trace> > traces(sigs.begin(), sigs.end());
980 const vector< shared_ptr<DecodeTrace> > decode_traces(
981 session().get_decode_signals());
982 traces.insert(decode_traces.begin(), decode_traces.end());
985 set< shared_ptr<Trace> > add_traces;
986 set_difference(traces.begin(), traces.end(),
987 prev_traces.begin(), prev_traces.end(),
988 inserter(add_traces, add_traces.begin()));
990 set< shared_ptr<Trace> > remove_traces;
991 set_difference(prev_traces.begin(), prev_traces.end(),
992 traces.begin(), traces.end(),
993 inserter(remove_traces, remove_traces.begin()));
995 // Make a look-up table of sigrok Channels to pulseview Signals
996 unordered_map<shared_ptr<sigrok::Channel>, shared_ptr<Signal> >
998 for (const shared_ptr<Signal> &sig : sigs)
999 signal_map[sig->channel()] = sig;
1001 // Populate channel groups
1003 for (auto entry : sr_dev->channel_groups()) {
1004 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1006 if (group->channels().size() <= 1)
1009 // Find best trace group to add to
1010 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1013 // If there is no trace group, create one
1014 shared_ptr<TraceGroup> new_trace_group;
1016 new_trace_group.reset(new TraceGroup());
1017 owner = new_trace_group.get();
1020 // Extract traces for the trace group, removing them from
1022 const vector< shared_ptr<Trace> > new_traces_in_group =
1023 extract_new_traces_for_channels(group->channels(),
1024 signal_map, add_traces);
1026 // Add the traces to the group
1027 const pair<int, int> prev_v_extents = owner->v_extents();
1028 int offset = prev_v_extents.second - prev_v_extents.first;
1029 for (shared_ptr<Trace> trace : new_traces_in_group) {
1031 owner->add_child_item(trace);
1033 const pair<int, int> extents = trace->v_extents();
1034 if (trace->enabled())
1035 offset += -extents.first;
1036 trace->force_to_v_offset(offset);
1037 if (trace->enabled())
1038 offset += extents.second;
1041 if (new_trace_group) {
1042 // Assign proper vertical offsets to each channel in the group
1043 new_trace_group->restack_items();
1045 // If this is a new group, enqueue it in the new top level
1047 if (!new_traces_in_group.empty())
1048 new_top_level_items.push_back(new_trace_group);
1052 // Enqueue the remaining logic channels in a group
1053 vector< shared_ptr<Channel> > logic_channels;
1054 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1055 [](const shared_ptr<Channel>& c) {
1056 return c->type() == sigrok::ChannelType::LOGIC; });
1058 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1059 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1061 if (non_grouped_logic_signals.size() > 0) {
1062 const shared_ptr<TraceGroup> non_grouped_trace_group(
1063 make_shared<TraceGroup>());
1064 for (shared_ptr<Trace> trace : non_grouped_logic_signals)
1065 non_grouped_trace_group->add_child_item(trace);
1067 non_grouped_trace_group->restack_items();
1068 new_top_level_items.push_back(non_grouped_trace_group);
1071 // Enqueue the remaining channels as free ungrouped traces
1072 const vector< shared_ptr<Trace> > new_top_level_signals =
1073 extract_new_traces_for_channels(channels, signal_map, add_traces);
1074 new_top_level_items.insert(new_top_level_items.end(),
1075 new_top_level_signals.begin(), new_top_level_signals.end());
1077 // Enqueue any remaining traces i.e. decode traces
1078 new_top_level_items.insert(new_top_level_items.end(),
1079 add_traces.begin(), add_traces.end());
1081 // Remove any removed traces
1082 for (shared_ptr<Trace> trace : remove_traces) {
1083 TraceTreeItemOwner *const owner = trace->owner();
1085 owner->remove_child_item(trace);
1088 // Remove any empty trace groups
1089 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1090 if (group->child_items().size() == 0) {
1091 remove_child_item(group);
1095 // Add and position the pending top levels items
1096 for (auto item : new_top_level_items) {
1097 add_child_item(item);
1099 // Position the item after the last item or at the top if there is none
1100 int offset = v_extents().second;
1101 const pair<int, int> extents = item->v_extents();
1103 if (item->enabled())
1104 offset += -extents.first;
1106 item->force_to_v_offset(offset);
1108 if (item->enabled())
1109 offset += extents.second;
1115 viewport_->update();
1117 if (reset_scrollbar)
1118 set_scroll_default();
1121 void View::capture_state_updated(int state)
1123 if (state == Session::Running) {
1124 set_time_unit(util::TimeUnit::Samples);
1126 trigger_markers_.clear();
1129 if (state == Session::Stopped) {
1130 // After acquisition has stopped we need to re-calculate the ticks once
1131 // as it's otherwise done when the user pans or zooms, which is too late
1132 calculate_tick_spacing();
1134 // Reset "always zoom to fit", the acquisition has stopped
1135 if (always_zoom_to_fit_) {
1136 always_zoom_to_fit_ = false;
1137 always_zoom_to_fit_changed(false);
1142 void View::data_updated()
1144 if (always_zoom_to_fit_ || sticky_scrolling_) {
1145 if (!delayed_view_updater_.isActive())
1146 delayed_view_updater_.start();
1148 determine_time_unit();
1151 viewport_->update();
1155 void View::perform_delayed_view_update()
1157 if (always_zoom_to_fit_)
1160 if (sticky_scrolling_) {
1161 // Make right side of the view sticky
1164 get_scroll_layout(length, offset);
1166 const QSize areaSize = viewport_->size();
1167 length = max(length - areaSize.width(), 0.0);
1169 set_offset(scale_ * length);
1172 determine_time_unit();
1175 viewport_->update();
1178 void View::process_sticky_events()
1180 if (sticky_events_ & TraceTreeItemHExtentsChanged)
1182 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
1183 restack_all_trace_tree_items();
1187 // Clear the sticky events
1191 void View::on_hover_point_changed()
1193 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1194 list_by_type<TraceTreeItem>());
1195 for (shared_ptr<TraceTreeItem> r : trace_tree_items)
1196 r->hover_point_changed();