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
189 std::unordered_set< std::shared_ptr<view::Signal> > View::signals() const
194 void View::clear_signals()
199 void View::add_signal(const shared_ptr<view::Signal> signal)
201 signals_.insert(signal);
209 const View* View::view() const
214 Viewport* View::viewport()
219 const Viewport* View::viewport() const
224 vector< shared_ptr<TimeItem> > View::time_items() const
226 const vector<shared_ptr<Flag>> f(flags());
227 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
228 items.push_back(cursors_);
229 items.push_back(cursors_->first());
230 items.push_back(cursors_->second());
232 for (auto trigger_marker : trigger_markers_)
233 items.push_back(trigger_marker);
238 double View::scale() const
243 void View::set_scale(double scale)
245 if (scale_ != scale) {
247 Q_EMIT scale_changed();
251 const Timestamp& View::offset() const
256 void View::set_offset(const pv::util::Timestamp& offset)
258 if (offset_ != offset) {
260 Q_EMIT offset_changed();
264 int View::owner_visual_v_offset() const
266 return -verticalScrollBar()->sliderPosition();
269 void View::set_v_offset(int offset)
271 verticalScrollBar()->setSliderPosition(offset);
276 unsigned int View::depth() const
281 pv::util::SIPrefix View::tick_prefix() const
286 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
288 if (tick_prefix_ != tick_prefix) {
289 tick_prefix_ = tick_prefix;
290 Q_EMIT tick_prefix_changed();
294 unsigned int View::tick_precision() const
296 return tick_precision_;
299 void View::set_tick_precision(unsigned tick_precision)
301 if (tick_precision_ != tick_precision) {
302 tick_precision_ = tick_precision;
303 Q_EMIT tick_precision_changed();
307 const pv::util::Timestamp& View::tick_period() const
312 void View::set_tick_period(const pv::util::Timestamp& tick_period)
314 if (tick_period_ != tick_period) {
315 tick_period_ = tick_period;
316 Q_EMIT tick_period_changed();
320 TimeUnit View::time_unit() const
325 void View::set_time_unit(pv::util::TimeUnit time_unit)
327 if (time_unit_ != time_unit) {
328 time_unit_ = time_unit;
329 Q_EMIT time_unit_changed();
333 void View::zoom(double steps)
335 zoom(steps, viewport_->width() / 2);
338 void View::zoom(double steps, int offset)
340 set_zoom(scale_ * pow(3.0/2.0, -steps), offset);
343 void View::zoom_fit(bool gui_state)
345 // Act as one-shot when stopped, toggle along with the GUI otherwise
346 if (session_.get_capture_state() == Session::Stopped) {
347 always_zoom_to_fit_ = false;
348 always_zoom_to_fit_changed(false);
350 always_zoom_to_fit_ = gui_state;
351 always_zoom_to_fit_changed(gui_state);
354 const pair<Timestamp, Timestamp> extents = get_time_extents();
355 const Timestamp delta = extents.second - extents.first;
356 if (delta < Timestamp("1e-12"))
360 const int w = viewport_->width();
364 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
365 set_scale_offset(scale.convert_to<double>(), extents.first);
368 void View::zoom_one_to_one()
370 using pv::data::SignalData;
372 // Make a set of all the visible data objects
373 set< shared_ptr<SignalData> > visible_data = get_visible_data();
374 if (visible_data.empty())
378 const int w = viewport_->width();
382 set_zoom(1.0 / session_.get_samplerate(), w / 2);
385 void View::set_scale_offset(double scale, const Timestamp& offset)
387 // Disable sticky scrolling / always zoom to fit when acquisition runs
388 // and user drags the viewport
389 if ((scale_ == scale) && (offset_ != offset) &&
390 (session_.get_capture_state() == Session::Running)) {
392 if (sticky_scrolling_) {
393 sticky_scrolling_ = false;
394 sticky_scrolling_changed(false);
397 if (always_zoom_to_fit_) {
398 always_zoom_to_fit_ = false;
399 always_zoom_to_fit_changed(false);
406 calculate_tick_spacing();
413 set< shared_ptr<SignalData> > View::get_visible_data() const
415 // Make a set of all the visible data objects
416 set< shared_ptr<SignalData> > visible_data;
417 for (const shared_ptr<Signal> sig : signals_)
419 visible_data.insert(sig->data());
424 pair<Timestamp, Timestamp> View::get_time_extents() const
426 boost::optional<Timestamp> left_time, right_time;
427 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
428 for (const shared_ptr<SignalData> d : visible_data) {
429 const vector< shared_ptr<Segment> > segments =
431 for (const shared_ptr<Segment> &s : segments) {
432 double samplerate = s->samplerate();
433 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
435 const Timestamp start_time = s->start_time();
436 left_time = left_time ?
437 min(*left_time, start_time) :
439 right_time = right_time ?
440 max(*right_time, start_time + d->max_sample_count() / samplerate) :
441 start_time + d->max_sample_count() / samplerate;
445 if (!left_time || !right_time)
446 return make_pair(0, 0);
448 assert(*left_time < *right_time);
449 return make_pair(*left_time, *right_time);
452 void View::enable_sticky_scrolling(bool state)
454 sticky_scrolling_ = state;
457 void View::enable_coloured_bg(bool state)
459 const vector<shared_ptr<TraceTreeItem>> items(
460 list_by_type<TraceTreeItem>());
462 for (shared_ptr<TraceTreeItem> i : items) {
463 // Can't cast to Trace because it's abstract, so we need to
464 // check for any derived classes individually
466 shared_ptr<AnalogSignal> a = dynamic_pointer_cast<AnalogSignal>(i);
468 a->set_coloured_bg(state);
470 shared_ptr<LogicSignal> l = dynamic_pointer_cast<LogicSignal>(i);
472 l->set_coloured_bg(state);
475 shared_ptr<DecodeTrace> d = dynamic_pointer_cast<DecodeTrace>(i);
477 d->set_coloured_bg(state);
484 bool View::cursors_shown() const
486 return show_cursors_;
489 void View::show_cursors(bool show)
491 show_cursors_ = show;
496 void View::centre_cursors()
498 const double time_width = scale_ * viewport_->width();
499 cursors_->first()->set_time(offset_ + time_width * 0.4);
500 cursors_->second()->set_time(offset_ + time_width * 0.6);
505 std::shared_ptr<CursorPair> View::cursors() const
510 void View::add_flag(const Timestamp& time)
512 flags_.push_back(shared_ptr<Flag>(new Flag(*this, time,
513 QString("%1").arg(next_flag_text_))));
515 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
516 (next_flag_text_ + 1);
518 time_item_appearance_changed(true, true);
521 void View::remove_flag(std::shared_ptr<Flag> flag)
524 time_item_appearance_changed(true, true);
527 vector< std::shared_ptr<Flag> > View::flags() const
529 vector< std::shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
530 stable_sort(flags.begin(), flags.end(),
531 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
532 return a->time() < b->time();
538 const QPoint& View::hover_point() const
543 void View::restack_all_trace_tree_items()
545 // Make a list of owners that is sorted from deepest first
546 const vector<shared_ptr<TraceTreeItem>> items(
547 list_by_type<TraceTreeItem>());
548 set< TraceTreeItemOwner* > owners;
549 for (const auto &r : items)
550 owners.insert(r->owner());
551 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
552 sort(sorted_owners.begin(), sorted_owners.end(),
553 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
554 return a->depth() > b->depth(); });
556 // Restack the items recursively
557 for (auto &o : sorted_owners)
560 // Re-assign background colors
561 bool next_bgcolour_state = 0;
563 for (auto &o : sorted_owners)
564 next_bgcolour_state = o->reassign_bgcolour_states(next_bgcolour_state);
566 // Animate the items to their destination
567 for (const auto &i : items)
568 i->animate_to_layout_v_offset();
571 void View::trigger_event(util::Timestamp location)
573 trigger_markers_.push_back(shared_ptr<TriggerMarker>(
574 new TriggerMarker(*this, location)));
577 void View::get_scroll_layout(double &length, Timestamp &offset) const
579 const pair<Timestamp, Timestamp> extents = get_time_extents();
580 length = ((extents.second - extents.first) / scale_).convert_to<double>();
581 offset = offset_ / scale_;
584 void View::set_zoom(double scale, int offset)
586 // Reset the "always zoom to fit" feature as the user changed the zoom
587 always_zoom_to_fit_ = false;
588 always_zoom_to_fit_changed(false);
590 const Timestamp cursor_offset = offset_ + scale_ * offset;
591 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
592 const Timestamp new_offset = cursor_offset - new_scale * offset;
593 set_scale_offset(new_scale.convert_to<double>(), new_offset);
596 void View::calculate_tick_spacing()
598 const double SpacingIncrement = 10.0f;
599 const double MinValueSpacing = 40.0f;
601 // Figure out the highest numeric value visible on a label
602 const QSize areaSize = viewport_->size();
603 const Timestamp max_time = max(fabs(offset_),
604 fabs(offset_ + scale_ * areaSize.width()));
606 double min_width = SpacingIncrement;
607 double label_width, tick_period_width;
609 QFontMetrics m(QApplication::font());
611 // Copies of the member variables with the same name, used in the calculation
612 // and written back afterwards, so that we don't emit signals all the time
613 // during the calculation.
614 pv::util::Timestamp tick_period = tick_period_;
615 pv::util::SIPrefix tick_prefix = tick_prefix_;
616 unsigned tick_precision = tick_precision_;
619 const double min_period = scale_ * min_width;
621 const int order = (int)floorf(log10f(min_period));
622 const pv::util::Timestamp order_decimal =
623 pow(pv::util::Timestamp(10), order);
625 // Allow for a margin of error so that a scale unit of 1 can be used.
626 // Otherwise, for a SU of 1 the tick period will almost always be below
627 // the min_period by a small amount - and thus skipped in favor of 2.
628 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
629 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
630 double tp_with_margin;
631 unsigned int unit = 0;
634 tp_with_margin = order_decimal.convert_to<double>() *
635 (ScaleUnits[unit++] + tp_margin);
636 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
638 tick_period = order_decimal * ScaleUnits[unit - 1];
639 tick_prefix = static_cast<pv::util::SIPrefix>(
640 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
642 // Precision is the number of fractional digits required, not
643 // taking the prefix into account (and it must never be negative)
644 tick_precision = std::max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
646 tick_period_width = (tick_period / scale_).convert_to<double>();
648 const QString label_text = Ruler::format_time_with_distance(
649 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
651 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
652 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
655 min_width += SpacingIncrement;
656 } while (tick_period_width < label_width);
658 set_tick_period(tick_period);
659 set_tick_prefix(tick_prefix);
660 set_tick_precision(tick_precision);
663 void View::update_scroll()
667 const QSize areaSize = viewport_->size();
669 // Set the horizontal scroll bar
672 get_scroll_layout(length, offset);
673 length = max(length - areaSize.width(), 0.0);
675 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
677 horizontalScrollBar()->setPageStep(areaSize.width() / 2);
678 horizontalScrollBar()->setSingleStep(major_tick_distance);
680 updating_scroll_ = true;
682 if (length < MaxScrollValue) {
683 horizontalScrollBar()->setRange(0, length);
684 horizontalScrollBar()->setSliderPosition(offset.convert_to<double>());
686 horizontalScrollBar()->setRange(0, MaxScrollValue);
687 horizontalScrollBar()->setSliderPosition(
688 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
691 updating_scroll_ = false;
693 // Set the vertical scrollbar
694 verticalScrollBar()->setPageStep(areaSize.height());
695 verticalScrollBar()->setSingleStep(areaSize.height() / 8);
697 const pair<int, int> extents = v_extents();
699 // Don't change the scrollbar range if there are no traces
700 if (extents.first != extents.second)
701 verticalScrollBar()->setRange(extents.first - areaSize.height(),
704 if (scroll_needs_defaults)
705 set_scroll_default();
708 void View::reset_scroll()
710 verticalScrollBar()->setRange(0, 0);
713 void View::set_scroll_default()
717 const QSize areaSize = viewport_->size();
719 // Special case: when starting up and the window isn't visible yet,
720 // areaSize is [0, 0]. In this case we want to be called again later
721 if (areaSize.height() == 0) {
722 scroll_needs_defaults = true;
725 scroll_needs_defaults = false;
728 const pair<int, int> extents = v_extents();
729 const int trace_height = extents.second - extents.first;
731 // Do all traces fit in the view?
732 if (areaSize.height() >= trace_height)
733 // Center all traces vertically
734 set_v_offset(extents.first -
735 ((areaSize.height() - trace_height) / 2));
737 // Put the first trace at the top, letting the bottom ones overflow
738 set_v_offset(extents.first);
741 void View::update_layout()
744 header_->sizeHint().width() - pv::view::Header::BaselineOffset,
745 ruler_->sizeHint().height(), 0, 0);
746 ruler_->setGeometry(viewport_->x(), 0,
747 viewport_->width(), ruler_->extended_size_hint().height());
748 header_->setGeometry(0, viewport_->y(),
749 header_->extended_size_hint().width(), viewport_->height());
753 TraceTreeItemOwner* View::find_prevalent_trace_group(
754 const shared_ptr<sigrok::ChannelGroup> &group,
755 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
760 unordered_set<TraceTreeItemOwner*> owners;
761 vector<TraceTreeItemOwner*> owner_list;
763 // Make a set and a list of all the owners
764 for (const auto &channel : group->channels()) {
765 for (auto entry : signal_map) {
766 if (entry.first->channel() == channel) {
767 TraceTreeItemOwner *const o = (entry.second)->owner();
768 owner_list.push_back(o);
774 // Iterate through the list of owners, and find the most prevalent
775 size_t max_prevalence = 0;
776 TraceTreeItemOwner *prevalent_owner = nullptr;
777 for (TraceTreeItemOwner *owner : owners) {
778 const size_t prevalence = std::count_if(
779 owner_list.begin(), owner_list.end(),
780 [&](TraceTreeItemOwner *o) { return o == owner; });
781 if (prevalence > max_prevalence) {
782 max_prevalence = prevalence;
783 prevalent_owner = owner;
787 return prevalent_owner;
790 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
791 const vector< shared_ptr<sigrok::Channel> > &channels,
792 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
794 set< shared_ptr<Trace> > &add_list)
796 vector< shared_ptr<Trace> > filtered_traces;
798 for (const auto &channel : channels) {
799 for (auto entry : signal_map) {
800 if (entry.first->channel() == channel) {
801 shared_ptr<Trace> trace = entry.second;
802 const auto list_iter = add_list.find(trace);
803 if (list_iter == add_list.end())
806 filtered_traces.push_back(trace);
807 add_list.erase(list_iter);
812 return filtered_traces;
815 void View::determine_time_unit()
817 // Check whether we know the sample rate and hence can use time as the unit
818 if (time_unit_ == util::TimeUnit::Samples) {
819 // Check all signals but...
820 for (const shared_ptr<Signal> signal : signals_) {
821 const shared_ptr<SignalData> data = signal->data();
823 // ...only check first segment of each
824 const vector< shared_ptr<Segment> > segments = data->segments();
825 if (!segments.empty())
826 if (segments[0]->samplerate()) {
827 set_time_unit(util::TimeUnit::Time);
834 bool View::eventFilter(QObject *object, QEvent *event)
836 const QEvent::Type type = event->type();
837 if (type == QEvent::MouseMove) {
839 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
840 if (object == viewport_)
841 hover_point_ = mouse_event->pos();
842 else if (object == ruler_)
843 hover_point_ = QPoint(mouse_event->x(), 0);
844 else if (object == header_)
845 hover_point_ = QPoint(0, mouse_event->y());
847 hover_point_ = QPoint(-1, -1);
849 hover_point_changed();
851 } else if (type == QEvent::Leave) {
852 hover_point_ = QPoint(-1, -1);
853 hover_point_changed();
856 return QObject::eventFilter(object, event);
859 bool View::viewportEvent(QEvent *event)
861 switch (event->type()) {
863 case QEvent::MouseButtonPress:
864 case QEvent::MouseButtonRelease:
865 case QEvent::MouseButtonDblClick:
866 case QEvent::MouseMove:
868 case QEvent::TouchBegin:
869 case QEvent::TouchUpdate:
870 case QEvent::TouchEnd:
873 return QAbstractScrollArea::viewportEvent(event);
877 void View::resizeEvent(QResizeEvent*)
882 void View::row_item_appearance_changed(bool label, bool content)
890 void View::time_item_appearance_changed(bool label, bool content)
898 void View::extents_changed(bool horz, bool vert)
901 (horz ? TraceTreeItemHExtentsChanged : 0) |
902 (vert ? TraceTreeItemVExtentsChanged : 0);
903 lazy_event_handler_.start();
906 void View::h_scroll_value_changed(int value)
908 if (updating_scroll_)
911 // Disable sticky scrolling when user moves the horizontal scroll bar
912 // during a running acquisition
913 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
914 sticky_scrolling_ = false;
915 sticky_scrolling_changed(false);
918 const int range = horizontalScrollBar()->maximum();
919 if (range < MaxScrollValue)
920 set_offset(scale_ * value);
924 get_scroll_layout(length, offset);
925 set_offset(scale_ * length * value / MaxScrollValue);
932 void View::v_scroll_value_changed()
938 void View::signals_changed()
940 using sigrok::Channel;
942 vector< shared_ptr<Channel> > channels;
943 shared_ptr<sigrok::Device> sr_dev;
945 // Do we need to set the vertical scrollbar to its default position later?
946 // We do if there are no traces, i.e. the scroll bar has no range set
947 bool reset_scrollbar =
948 verticalScrollBar()->minimum() == verticalScrollBar()->maximum();
950 if (!session_.device()) {
954 sr_dev = session_.device()->device();
956 channels = sr_dev->channels();
959 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
961 // Make a list of traces that are being added, and a list of traces
962 // that are being removed
963 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
964 const set<shared_ptr<Trace>> prev_traces(
965 prev_trace_list.begin(), prev_trace_list.end());
967 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
970 const vector< shared_ptr<DecodeTrace> > decode_traces(
971 session().get_decode_signals());
972 traces.insert(decode_traces.begin(), decode_traces.end());
975 set< shared_ptr<Trace> > add_traces;
976 set_difference(traces.begin(), traces.end(),
977 prev_traces.begin(), prev_traces.end(),
978 inserter(add_traces, add_traces.begin()));
980 set< shared_ptr<Trace> > remove_traces;
981 set_difference(prev_traces.begin(), prev_traces.end(),
982 traces.begin(), traces.end(),
983 inserter(remove_traces, remove_traces.begin()));
985 // Make a look-up table of sigrok Channels to pulseview Signals
986 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
988 for (const shared_ptr<Signal> &sig : signals_)
989 signal_map[sig->base()] = sig;
991 // Populate channel groups
993 for (auto entry : sr_dev->channel_groups()) {
994 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
996 if (group->channels().size() <= 1)
999 // Find best trace group to add to
1000 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1003 // If there is no trace group, create one
1004 shared_ptr<TraceGroup> new_trace_group;
1006 new_trace_group.reset(new TraceGroup());
1007 owner = new_trace_group.get();
1010 // Extract traces for the trace group, removing them from
1012 const vector< shared_ptr<Trace> > new_traces_in_group =
1013 extract_new_traces_for_channels(group->channels(),
1014 signal_map, add_traces);
1016 // Add the traces to the group
1017 const pair<int, int> prev_v_extents = owner->v_extents();
1018 int offset = prev_v_extents.second - prev_v_extents.first;
1019 for (shared_ptr<Trace> trace : new_traces_in_group) {
1021 owner->add_child_item(trace);
1023 const pair<int, int> extents = trace->v_extents();
1024 if (trace->enabled())
1025 offset += -extents.first;
1026 trace->force_to_v_offset(offset);
1027 if (trace->enabled())
1028 offset += extents.second;
1031 if (new_trace_group) {
1032 // Assign proper vertical offsets to each channel in the group
1033 new_trace_group->restack_items();
1035 // If this is a new group, enqueue it in the new top level
1037 if (!new_traces_in_group.empty())
1038 new_top_level_items.push_back(new_trace_group);
1042 // Enqueue the remaining logic channels in a group
1043 vector< shared_ptr<Channel> > logic_channels;
1044 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1045 [](const shared_ptr<Channel>& c) {
1046 return c->type() == sigrok::ChannelType::LOGIC; });
1048 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1049 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1051 if (non_grouped_logic_signals.size() > 0) {
1052 const shared_ptr<TraceGroup> non_grouped_trace_group(
1053 make_shared<TraceGroup>());
1054 for (shared_ptr<Trace> trace : non_grouped_logic_signals)
1055 non_grouped_trace_group->add_child_item(trace);
1057 non_grouped_trace_group->restack_items();
1058 new_top_level_items.push_back(non_grouped_trace_group);
1061 // Enqueue the remaining channels as free ungrouped traces
1062 const vector< shared_ptr<Trace> > new_top_level_signals =
1063 extract_new_traces_for_channels(channels, signal_map, add_traces);
1064 new_top_level_items.insert(new_top_level_items.end(),
1065 new_top_level_signals.begin(), new_top_level_signals.end());
1067 // Enqueue any remaining traces i.e. decode traces
1068 new_top_level_items.insert(new_top_level_items.end(),
1069 add_traces.begin(), add_traces.end());
1071 // Remove any removed traces
1072 for (shared_ptr<Trace> trace : remove_traces) {
1073 TraceTreeItemOwner *const owner = trace->owner();
1075 owner->remove_child_item(trace);
1078 // Remove any empty trace groups
1079 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1080 if (group->child_items().size() == 0) {
1081 remove_child_item(group);
1085 // Add and position the pending top levels items
1086 for (auto item : new_top_level_items) {
1087 add_child_item(item);
1089 // Position the item after the last item or at the top if there is none
1090 int offset = v_extents().second;
1091 const pair<int, int> extents = item->v_extents();
1093 if (item->enabled())
1094 offset += -extents.first;
1096 item->force_to_v_offset(offset);
1098 if (item->enabled())
1099 offset += extents.second;
1105 viewport_->update();
1107 if (reset_scrollbar)
1108 set_scroll_default();
1111 void View::capture_state_updated(int state)
1113 if (state == Session::Running) {
1114 set_time_unit(util::TimeUnit::Samples);
1116 trigger_markers_.clear();
1119 if (state == Session::Stopped) {
1120 // After acquisition has stopped we need to re-calculate the ticks once
1121 // as it's otherwise done when the user pans or zooms, which is too late
1122 calculate_tick_spacing();
1124 // Reset "always zoom to fit", the acquisition has stopped
1125 if (always_zoom_to_fit_) {
1126 always_zoom_to_fit_ = false;
1127 always_zoom_to_fit_changed(false);
1132 void View::data_updated()
1134 if (always_zoom_to_fit_ || sticky_scrolling_) {
1135 if (!delayed_view_updater_.isActive())
1136 delayed_view_updater_.start();
1138 determine_time_unit();
1141 viewport_->update();
1145 void View::perform_delayed_view_update()
1147 if (always_zoom_to_fit_)
1150 if (sticky_scrolling_) {
1151 // Make right side of the view sticky
1154 get_scroll_layout(length, offset);
1156 const QSize areaSize = viewport_->size();
1157 length = max(length - areaSize.width(), 0.0);
1159 set_offset(scale_ * length);
1162 determine_time_unit();
1165 viewport_->update();
1168 void View::process_sticky_events()
1170 if (sticky_events_ & TraceTreeItemHExtentsChanged)
1172 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
1173 restack_all_trace_tree_items();
1177 // Clear the sticky events
1181 void View::on_hover_point_changed()
1183 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1184 list_by_type<TraceTreeItem>());
1185 for (shared_ptr<TraceTreeItem> r : trace_tree_items)
1186 r->hover_point_changed();