2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include <libsigrokdecode/libsigrokdecode.h>
33 #include <unordered_set>
35 #include <boost/archive/text_iarchive.hpp>
36 #include <boost/archive/text_oarchive.hpp>
37 #include <boost/serialization/serialization.hpp>
38 #include <boost/thread/locks.hpp>
40 #include <QApplication>
41 #include <QHBoxLayout>
43 #include <QFontMetrics>
44 #include <QMouseEvent>
47 #include <libsigrokcxx/libsigrokcxx.hpp>
49 #include "analogsignal.hpp"
51 #include "logicsignal.hpp"
54 #include "tracegroup.hpp"
55 #include "triggermarker.hpp"
57 #include "viewport.hpp"
59 #include "pv/session.hpp"
60 #include "pv/devices/device.hpp"
61 #include "pv/data/logic.hpp"
62 #include "pv/data/logicsegment.hpp"
63 #include "pv/util.hpp"
66 #include "decodetrace.hpp"
69 using boost::shared_lock;
70 using boost::shared_mutex;
72 using pv::data::SignalData;
73 using pv::data::Segment;
74 using pv::util::TimeUnit;
75 using pv::util::Timestamp;
77 using std::back_inserter;
80 using std::dynamic_pointer_cast;
83 using std::lock_guard;
86 using std::make_shared;
90 using std::set_difference;
91 using std::shared_ptr;
92 using std::unordered_map;
93 using std::unordered_set;
101 const Timestamp View::MaxScale("1e9");
102 const Timestamp View::MinScale("1e-12");
104 const int View::MaxScrollValue = INT_MAX / 2;
105 const int View::MaxViewAutoUpdateRate = 25; // No more than 25 Hz with sticky scrolling
107 const int View::ScaleUnits[3] = {1, 2, 5};
110 CustomAbstractScrollArea::CustomAbstractScrollArea(QWidget *parent) :
111 QAbstractScrollArea(parent)
115 void CustomAbstractScrollArea::setViewportMargins(int left, int top, int right, int bottom)
117 QAbstractScrollArea::setViewportMargins(left, top, right, bottom);
120 bool CustomAbstractScrollArea::viewportEvent(QEvent *event)
122 switch (event->type()) {
124 case QEvent::MouseButtonPress:
125 case QEvent::MouseButtonRelease:
126 case QEvent::MouseButtonDblClick:
127 case QEvent::MouseMove:
129 case QEvent::TouchBegin:
130 case QEvent::TouchUpdate:
131 case QEvent::TouchEnd:
134 return QAbstractScrollArea::viewportEvent(event);
138 View::View(Session &session, QWidget *parent) :
139 ViewBase(session, parent),
140 viewport_(new Viewport(*this)),
141 ruler_(new Ruler(*this)),
142 header_(new Header(*this)),
146 updating_scroll_(false),
147 sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui()
149 always_zoom_to_fit_(false),
151 tick_prefix_(pv::util::SIPrefix::yocto),
153 time_unit_(util::TimeUnit::Time),
154 show_cursors_(false),
155 cursors_(new CursorPair(*this)),
156 next_flag_text_('A'),
158 hover_point_(-1, -1),
159 scroll_needs_defaults_(false),
161 size_finalized_(false)
163 connect(scrollarea_.horizontalScrollBar(), SIGNAL(valueChanged(int)),
164 this, SLOT(h_scroll_value_changed(int)));
165 connect(scrollarea_.verticalScrollBar(), SIGNAL(valueChanged(int)),
166 this, SLOT(v_scroll_value_changed()));
168 connect(header_, SIGNAL(selection_changed()),
169 ruler_, SLOT(clear_selection()));
170 connect(ruler_, SIGNAL(selection_changed()),
171 header_, SLOT(clear_selection()));
173 connect(header_, SIGNAL(selection_changed()),
174 this, SIGNAL(selection_changed()));
175 connect(ruler_, SIGNAL(selection_changed()),
176 this, SIGNAL(selection_changed()));
178 connect(this, SIGNAL(hover_point_changed()),
179 this, SLOT(on_hover_point_changed()));
181 connect(&lazy_event_handler_, SIGNAL(timeout()),
182 this, SLOT(process_sticky_events()));
183 lazy_event_handler_.setSingleShot(true);
185 connect(&delayed_view_updater_, SIGNAL(timeout()),
186 this, SLOT(perform_delayed_view_update()));
187 delayed_view_updater_.setSingleShot(true);
188 delayed_view_updater_.setInterval(1000 / MaxViewAutoUpdateRate);
190 /* To let the scroll area fill up the parent QWidget (this), we need a layout */
191 QHBoxLayout *layout = new QHBoxLayout(this);
193 layout->setContentsMargins(0, 0, 0, 0);
194 layout->addWidget(&scrollarea_);
196 scrollarea_.setViewport(viewport_);
198 viewport_->installEventFilter(this);
199 ruler_->installEventFilter(this);
200 header_->installEventFilter(this);
202 // Trigger the initial event manually. The default device has signals
203 // which were created before this object came into being
206 // make sure the transparent widgets are on the top
210 // Update the zoom state
211 calculate_tick_spacing();
214 Session& View::session()
219 const Session& View::session() const
224 std::unordered_set< std::shared_ptr<Signal> > View::signals() const
229 void View::clear_signals()
234 void View::add_signal(const shared_ptr<Signal> signal)
236 signals_.insert(signal);
240 void View::clear_decode_signals()
242 decode_traces_.clear();
245 void View::add_decode_signal(shared_ptr<data::SignalBase> signalbase)
247 shared_ptr<DecodeTrace> d(
248 new DecodeTrace(session_, signalbase, decode_traces_.size()));
249 decode_traces_.push_back(d);
252 void View::remove_decode_signal(shared_ptr<data::SignalBase> signalbase)
254 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
255 if ((*i)->base() == signalbase) {
256 decode_traces_.erase(i);
268 const View* View::view() const
273 Viewport* View::viewport()
278 const Viewport* View::viewport() const
283 void View::save_settings(QSettings &settings) const
285 settings.setValue("scale", scale_);
286 settings.setValue("v_offset",
287 scrollarea_.verticalScrollBar()->sliderPosition());
289 std::stringstream ss;
290 boost::archive::text_oarchive oa(ss);
291 oa << boost::serialization::make_nvp("offset", offset_);
292 settings.setValue("offset", QString::fromStdString(ss.str()));
294 for (shared_ptr<Signal> signal : signals_) {
295 settings.beginGroup(signal->base()->internal_name());
296 signal->save_settings(settings);
301 void View::restore_settings(QSettings &settings)
303 // Note: It is assumed that this function is only called once,
304 // immediately after restoring a previous session.
306 if (settings.contains("scale"))
307 set_scale(settings.value("scale").toDouble());
309 if (settings.contains("offset")) {
310 util::Timestamp offset;
311 std::stringstream ss;
312 ss << settings.value("offset").toString().toStdString();
314 boost::archive::text_iarchive ia(ss);
315 ia >> boost::serialization::make_nvp("offset", offset);
320 for (shared_ptr<Signal> signal : signals_) {
321 settings.beginGroup(signal->base()->internal_name());
322 signal->restore_settings(settings);
326 if (settings.contains("v_offset")) {
327 saved_v_offset_ = settings.value("v_offset").toInt();
328 set_v_offset(saved_v_offset_);
329 scroll_needs_defaults_ = false;
330 // Note: see resizeEvent() for additional information
334 vector< shared_ptr<TimeItem> > View::time_items() const
336 const vector<shared_ptr<Flag>> f(flags());
337 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
338 items.push_back(cursors_);
339 items.push_back(cursors_->first());
340 items.push_back(cursors_->second());
342 for (auto trigger_marker : trigger_markers_)
343 items.push_back(trigger_marker);
348 double View::scale() const
353 void View::set_scale(double scale)
355 if (scale_ != scale) {
357 Q_EMIT scale_changed();
361 const Timestamp& View::offset() const
366 void View::set_offset(const pv::util::Timestamp& offset)
368 if (offset_ != offset) {
370 Q_EMIT offset_changed();
374 int View::owner_visual_v_offset() const
376 return -scrollarea_.verticalScrollBar()->sliderPosition();
379 void View::set_v_offset(int offset)
381 scrollarea_.verticalScrollBar()->setSliderPosition(offset);
386 unsigned int View::depth() const
391 pv::util::SIPrefix View::tick_prefix() const
396 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
398 if (tick_prefix_ != tick_prefix) {
399 tick_prefix_ = tick_prefix;
400 Q_EMIT tick_prefix_changed();
404 unsigned int View::tick_precision() const
406 return tick_precision_;
409 void View::set_tick_precision(unsigned tick_precision)
411 if (tick_precision_ != tick_precision) {
412 tick_precision_ = tick_precision;
413 Q_EMIT tick_precision_changed();
417 const pv::util::Timestamp& View::tick_period() const
422 void View::set_tick_period(const pv::util::Timestamp& tick_period)
424 if (tick_period_ != tick_period) {
425 tick_period_ = tick_period;
426 Q_EMIT tick_period_changed();
430 TimeUnit View::time_unit() const
435 void View::set_time_unit(pv::util::TimeUnit time_unit)
437 if (time_unit_ != time_unit) {
438 time_unit_ = time_unit;
439 Q_EMIT time_unit_changed();
443 void View::zoom(double steps)
445 zoom(steps, viewport_->width() / 2);
448 void View::zoom(double steps, int offset)
450 set_zoom(scale_ * pow(3.0/2.0, -steps), offset);
453 void View::zoom_fit(bool gui_state)
455 // Act as one-shot when stopped, toggle along with the GUI otherwise
456 if (session_.get_capture_state() == Session::Stopped) {
457 always_zoom_to_fit_ = false;
458 always_zoom_to_fit_changed(false);
460 always_zoom_to_fit_ = gui_state;
461 always_zoom_to_fit_changed(gui_state);
464 const pair<Timestamp, Timestamp> extents = get_time_extents();
465 const Timestamp delta = extents.second - extents.first;
466 if (delta < Timestamp("1e-12"))
470 const int w = viewport_->width();
474 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
475 set_scale_offset(scale.convert_to<double>(), extents.first);
478 void View::zoom_one_to_one()
480 using pv::data::SignalData;
482 // Make a set of all the visible data objects
483 set< shared_ptr<SignalData> > visible_data = get_visible_data();
484 if (visible_data.empty())
488 const int w = viewport_->width();
492 set_zoom(1.0 / session_.get_samplerate(), w / 2);
495 void View::set_scale_offset(double scale, const Timestamp& offset)
497 // Disable sticky scrolling / always zoom to fit when acquisition runs
498 // and user drags the viewport
499 if ((scale_ == scale) && (offset_ != offset) &&
500 (session_.get_capture_state() == Session::Running)) {
502 if (sticky_scrolling_) {
503 sticky_scrolling_ = false;
504 sticky_scrolling_changed(false);
507 if (always_zoom_to_fit_) {
508 always_zoom_to_fit_ = false;
509 always_zoom_to_fit_changed(false);
516 calculate_tick_spacing();
523 set< shared_ptr<SignalData> > View::get_visible_data() const
525 // Make a set of all the visible data objects
526 set< shared_ptr<SignalData> > visible_data;
527 for (const shared_ptr<Signal> sig : signals_)
529 visible_data.insert(sig->data());
534 pair<Timestamp, Timestamp> View::get_time_extents() const
536 boost::optional<Timestamp> left_time, right_time;
537 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
538 for (const shared_ptr<SignalData> d : visible_data) {
539 const vector< shared_ptr<Segment> > segments =
541 for (const shared_ptr<Segment> &s : segments) {
542 double samplerate = s->samplerate();
543 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
545 const Timestamp start_time = s->start_time();
546 left_time = left_time ?
547 min(*left_time, start_time) :
549 right_time = right_time ?
550 max(*right_time, start_time + d->max_sample_count() / samplerate) :
551 start_time + d->max_sample_count() / samplerate;
555 if (!left_time || !right_time)
556 return make_pair(0, 0);
558 assert(*left_time < *right_time);
559 return make_pair(*left_time, *right_time);
562 void View::enable_sticky_scrolling(bool state)
564 sticky_scrolling_ = state;
567 void View::toggle_sticky_scrolling(void)
569 sticky_scrolling_ = !sticky_scrolling_;
572 bool View::get_coloured_bg(void)
577 void View::enable_coloured_bg(bool state)
579 const vector<shared_ptr<TraceTreeItem>> items(
580 list_by_type<TraceTreeItem>());
582 coloured_bg_ = state;
584 for (shared_ptr<TraceTreeItem> i : items) {
585 // Can't cast to Trace because it's abstract, so we need to
586 // check for any derived classes individually
588 shared_ptr<AnalogSignal> a = dynamic_pointer_cast<AnalogSignal>(i);
590 a->set_coloured_bg(state);
592 shared_ptr<LogicSignal> l = dynamic_pointer_cast<LogicSignal>(i);
594 l->set_coloured_bg(state);
597 shared_ptr<DecodeTrace> d = dynamic_pointer_cast<DecodeTrace>(i);
599 d->set_coloured_bg(state);
606 void View::toggle_coloured_bg(void)
608 enable_coloured_bg(!coloured_bg_);
611 bool View::cursors_shown() const
613 return show_cursors_;
616 void View::show_cursors(bool show)
618 show_cursors_ = show;
623 void View::centre_cursors()
625 const double time_width = scale_ * viewport_->width();
626 cursors_->first()->set_time(offset_ + time_width * 0.4);
627 cursors_->second()->set_time(offset_ + time_width * 0.6);
632 std::shared_ptr<CursorPair> View::cursors() const
637 void View::add_flag(const Timestamp& time)
639 flags_.push_back(shared_ptr<Flag>(new Flag(*this, time,
640 QString("%1").arg(next_flag_text_))));
642 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
643 (next_flag_text_ + 1);
645 time_item_appearance_changed(true, true);
648 void View::remove_flag(std::shared_ptr<Flag> flag)
651 time_item_appearance_changed(true, true);
654 vector< std::shared_ptr<Flag> > View::flags() const
656 vector< std::shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
657 stable_sort(flags.begin(), flags.end(),
658 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
659 return a->time() < b->time();
665 const QPoint& View::hover_point() const
670 void View::restack_all_trace_tree_items()
672 // Make a list of owners that is sorted from deepest first
673 const vector<shared_ptr<TraceTreeItem>> items(
674 list_by_type<TraceTreeItem>());
675 set< TraceTreeItemOwner* > owners;
676 for (const auto &r : items)
677 owners.insert(r->owner());
678 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
679 sort(sorted_owners.begin(), sorted_owners.end(),
680 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
681 return a->depth() > b->depth(); });
683 // Restack the items recursively
684 for (auto &o : sorted_owners)
687 // Re-assign background colors
688 bool next_bgcolour_state = 0;
690 for (auto &o : sorted_owners)
691 next_bgcolour_state = o->reassign_bgcolour_states(next_bgcolour_state);
693 // Animate the items to their destination
694 for (const auto &i : items)
695 i->animate_to_layout_v_offset();
698 void View::trigger_event(util::Timestamp location)
700 trigger_markers_.push_back(shared_ptr<TriggerMarker>(
701 new TriggerMarker(*this, location)));
704 void View::get_scroll_layout(double &length, Timestamp &offset) const
706 const pair<Timestamp, Timestamp> extents = get_time_extents();
707 length = ((extents.second - extents.first) / scale_).convert_to<double>();
708 offset = offset_ / scale_;
711 void View::set_zoom(double scale, int offset)
713 // Reset the "always zoom to fit" feature as the user changed the zoom
714 always_zoom_to_fit_ = false;
715 always_zoom_to_fit_changed(false);
717 const Timestamp cursor_offset = offset_ + scale_ * offset;
718 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
719 const Timestamp new_offset = cursor_offset - new_scale * offset;
720 set_scale_offset(new_scale.convert_to<double>(), new_offset);
723 void View::calculate_tick_spacing()
725 const double SpacingIncrement = 10.0f;
726 const double MinValueSpacing = 40.0f;
728 // Figure out the highest numeric value visible on a label
729 const QSize areaSize = viewport_->size();
730 const Timestamp max_time = max(fabs(offset_),
731 fabs(offset_ + scale_ * areaSize.width()));
733 double min_width = SpacingIncrement;
734 double label_width, tick_period_width;
736 QFontMetrics m(QApplication::font());
738 // Copies of the member variables with the same name, used in the calculation
739 // and written back afterwards, so that we don't emit signals all the time
740 // during the calculation.
741 pv::util::Timestamp tick_period = tick_period_;
742 pv::util::SIPrefix tick_prefix = tick_prefix_;
743 unsigned tick_precision = tick_precision_;
746 const double min_period = scale_ * min_width;
748 const int order = (int)floorf(log10f(min_period));
749 const pv::util::Timestamp order_decimal =
750 pow(pv::util::Timestamp(10), order);
752 // Allow for a margin of error so that a scale unit of 1 can be used.
753 // Otherwise, for a SU of 1 the tick period will almost always be below
754 // the min_period by a small amount - and thus skipped in favor of 2.
755 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
756 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
757 double tp_with_margin;
758 unsigned int unit = 0;
761 tp_with_margin = order_decimal.convert_to<double>() *
762 (ScaleUnits[unit++] + tp_margin);
763 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
765 tick_period = order_decimal * ScaleUnits[unit - 1];
766 tick_prefix = static_cast<pv::util::SIPrefix>(
767 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
769 // Precision is the number of fractional digits required, not
770 // taking the prefix into account (and it must never be negative)
771 tick_precision = std::max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
773 tick_period_width = (tick_period / scale_).convert_to<double>();
775 const QString label_text = Ruler::format_time_with_distance(
776 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
778 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
779 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
782 min_width += SpacingIncrement;
783 } while (tick_period_width < label_width);
785 set_tick_period(tick_period);
786 set_tick_prefix(tick_prefix);
787 set_tick_precision(tick_precision);
790 void View::update_scroll()
793 QScrollBar *hscrollbar = scrollarea_.horizontalScrollBar();
794 QScrollBar *vscrollbar = scrollarea_.verticalScrollBar();
796 const QSize areaSize = viewport_->size();
798 // Set the horizontal scroll bar
801 get_scroll_layout(length, offset);
802 length = max(length - areaSize.width(), 0.0);
804 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
806 hscrollbar->setPageStep(areaSize.width() / 2);
807 hscrollbar->setSingleStep(major_tick_distance);
809 updating_scroll_ = true;
811 if (length < MaxScrollValue) {
812 hscrollbar->setRange(0, length);
813 hscrollbar->setSliderPosition(offset.convert_to<double>());
815 hscrollbar->setRange(0, MaxScrollValue);
816 hscrollbar->setSliderPosition(
817 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
820 updating_scroll_ = false;
822 // Set the vertical scrollbar
823 vscrollbar->setPageStep(areaSize.height());
824 vscrollbar->setSingleStep(areaSize.height() / 8);
826 const pair<int, int> extents = v_extents();
828 // Don't change the scrollbar range if there are no traces
829 if (extents.first != extents.second)
830 vscrollbar->setRange(extents.first - areaSize.height(),
833 if (scroll_needs_defaults_)
834 set_scroll_default();
837 void View::reset_scroll()
839 scrollarea_.verticalScrollBar()->setRange(0, 0);
842 void View::set_scroll_default()
846 const QSize areaSize = viewport_->size();
848 const pair<int, int> extents = v_extents();
849 const int trace_height = extents.second - extents.first;
851 // Do all traces fit in the view?
852 if (areaSize.height() >= trace_height)
853 // Center all traces vertically
854 set_v_offset(extents.first -
855 ((areaSize.height() - trace_height) / 2));
857 // Put the first trace at the top, letting the bottom ones overflow
858 set_v_offset(extents.first);
860 // If we're not sure whether setting the defaults worked as
861 // the window wasn't set up entirely yet, we want to be called
862 // again later to make sure
863 scroll_needs_defaults_ = !size_finalized_;
866 void View::update_layout()
868 scrollarea_.setViewportMargins(
869 header_->sizeHint().width() - Header::BaselineOffset,
870 ruler_->sizeHint().height(), 0, 0);
871 ruler_->setGeometry(viewport_->x(), 0,
872 viewport_->width(), ruler_->extended_size_hint().height());
873 header_->setGeometry(0, viewport_->y(),
874 header_->extended_size_hint().width(), viewport_->height());
878 TraceTreeItemOwner* View::find_prevalent_trace_group(
879 const shared_ptr<sigrok::ChannelGroup> &group,
880 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
885 unordered_set<TraceTreeItemOwner*> owners;
886 vector<TraceTreeItemOwner*> owner_list;
888 // Make a set and a list of all the owners
889 for (const auto &channel : group->channels()) {
890 for (auto entry : signal_map) {
891 if (entry.first->channel() == channel) {
892 TraceTreeItemOwner *const o = (entry.second)->owner();
893 owner_list.push_back(o);
899 // Iterate through the list of owners, and find the most prevalent
900 size_t max_prevalence = 0;
901 TraceTreeItemOwner *prevalent_owner = nullptr;
902 for (TraceTreeItemOwner *owner : owners) {
903 const size_t prevalence = std::count_if(
904 owner_list.begin(), owner_list.end(),
905 [&](TraceTreeItemOwner *o) { return o == owner; });
906 if (prevalence > max_prevalence) {
907 max_prevalence = prevalence;
908 prevalent_owner = owner;
912 return prevalent_owner;
915 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
916 const vector< shared_ptr<sigrok::Channel> > &channels,
917 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
919 set< shared_ptr<Trace> > &add_list)
921 vector< shared_ptr<Trace> > filtered_traces;
923 for (const auto &channel : channels) {
924 for (auto entry : signal_map) {
925 if (entry.first->channel() == channel) {
926 shared_ptr<Trace> trace = entry.second;
927 const auto list_iter = add_list.find(trace);
928 if (list_iter == add_list.end())
931 filtered_traces.push_back(trace);
932 add_list.erase(list_iter);
937 return filtered_traces;
940 void View::determine_time_unit()
942 // Check whether we know the sample rate and hence can use time as the unit
943 if (time_unit_ == util::TimeUnit::Samples) {
944 // Check all signals but...
945 for (const shared_ptr<Signal> signal : signals_) {
946 const shared_ptr<SignalData> data = signal->data();
948 // ...only check first segment of each
949 const vector< shared_ptr<Segment> > segments = data->segments();
950 if (!segments.empty())
951 if (segments[0]->samplerate()) {
952 set_time_unit(util::TimeUnit::Time);
959 bool View::eventFilter(QObject *object, QEvent *event)
961 const QEvent::Type type = event->type();
962 if (type == QEvent::MouseMove) {
964 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
965 if (object == viewport_)
966 hover_point_ = mouse_event->pos();
967 else if (object == ruler_)
968 hover_point_ = QPoint(mouse_event->x(), 0);
969 else if (object == header_)
970 hover_point_ = QPoint(0, mouse_event->y());
972 hover_point_ = QPoint(-1, -1);
974 hover_point_changed();
976 } else if (type == QEvent::Leave) {
977 hover_point_ = QPoint(-1, -1);
978 hover_point_changed();
981 return QObject::eventFilter(object, event);
984 void View::resizeEvent(QResizeEvent*)
988 // This is somewhat of a hack, unfortunately. We cannot use
989 // set_v_offset() from within restore_settings() as the view
990 // at that point is neither visible nor properly sized.
991 // This is the least intrusive workaround I could come up
992 // with: set the vertical offset (or scroll defaults) when
993 // the view is visible and resized to its final size.
994 // Resize events that are sent when the view is not visible
995 // must be ignored as they have wrong sizes, potentially
996 // preventing the v offset from being set successfully.
999 size_finalized_ = true;
1001 if (size_finalized_ && saved_v_offset_) {
1002 set_v_offset(saved_v_offset_);
1003 saved_v_offset_ = 0;
1006 if (size_finalized_ && scroll_needs_defaults_)
1007 set_scroll_default();
1010 void View::row_item_appearance_changed(bool label, bool content)
1015 viewport_->update();
1018 void View::time_item_appearance_changed(bool label, bool content)
1023 viewport_->update();
1026 void View::extents_changed(bool horz, bool vert)
1029 (horz ? TraceTreeItemHExtentsChanged : 0) |
1030 (vert ? TraceTreeItemVExtentsChanged : 0);
1031 lazy_event_handler_.start();
1034 void View::h_scroll_value_changed(int value)
1036 if (updating_scroll_)
1039 // Disable sticky scrolling when user moves the horizontal scroll bar
1040 // during a running acquisition
1041 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1042 sticky_scrolling_ = false;
1043 sticky_scrolling_changed(false);
1046 const int range = scrollarea_.horizontalScrollBar()->maximum();
1047 if (range < MaxScrollValue)
1048 set_offset(scale_ * value);
1052 get_scroll_layout(length, offset);
1053 set_offset(scale_ * length * value / MaxScrollValue);
1057 viewport_->update();
1060 void View::v_scroll_value_changed()
1063 viewport_->update();
1066 void View::signals_changed()
1068 using sigrok::Channel;
1070 vector< shared_ptr<Channel> > channels;
1071 shared_ptr<sigrok::Device> sr_dev;
1073 // Do we need to set the vertical scrollbar to its default position later?
1074 // We do if there are no traces, i.e. the scroll bar has no range set
1075 bool reset_scrollbar =
1076 (scrollarea_.verticalScrollBar()->minimum() ==
1077 scrollarea_.verticalScrollBar()->maximum());
1079 if (!session_.device()) {
1083 sr_dev = session_.device()->device();
1085 channels = sr_dev->channels();
1088 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1090 // Make a list of traces that are being added, and a list of traces
1091 // that are being removed
1092 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1093 const set<shared_ptr<Trace>> prev_traces(
1094 prev_trace_list.begin(), prev_trace_list.end());
1096 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1098 #ifdef ENABLE_DECODE
1099 traces.insert(decode_traces_.begin(), decode_traces_.end());
1102 set< shared_ptr<Trace> > add_traces;
1103 set_difference(traces.begin(), traces.end(),
1104 prev_traces.begin(), prev_traces.end(),
1105 inserter(add_traces, add_traces.begin()));
1107 set< shared_ptr<Trace> > remove_traces;
1108 set_difference(prev_traces.begin(), prev_traces.end(),
1109 traces.begin(), traces.end(),
1110 inserter(remove_traces, remove_traces.begin()));
1112 // Make a look-up table of sigrok Channels to pulseview Signals
1113 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1115 for (const shared_ptr<Signal> &sig : signals_)
1116 signal_map[sig->base()] = sig;
1118 // Populate channel groups
1120 for (auto entry : sr_dev->channel_groups()) {
1121 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1123 if (group->channels().size() <= 1)
1126 // Find best trace group to add to
1127 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1130 // If there is no trace group, create one
1131 shared_ptr<TraceGroup> new_trace_group;
1133 new_trace_group.reset(new TraceGroup());
1134 owner = new_trace_group.get();
1137 // Extract traces for the trace group, removing them from
1139 const vector< shared_ptr<Trace> > new_traces_in_group =
1140 extract_new_traces_for_channels(group->channels(),
1141 signal_map, add_traces);
1143 // Add the traces to the group
1144 const pair<int, int> prev_v_extents = owner->v_extents();
1145 int offset = prev_v_extents.second - prev_v_extents.first;
1146 for (shared_ptr<Trace> trace : new_traces_in_group) {
1148 owner->add_child_item(trace);
1150 const pair<int, int> extents = trace->v_extents();
1151 if (trace->enabled())
1152 offset += -extents.first;
1153 trace->force_to_v_offset(offset);
1154 if (trace->enabled())
1155 offset += extents.second;
1158 if (new_trace_group) {
1159 // Assign proper vertical offsets to each channel in the group
1160 new_trace_group->restack_items();
1162 // If this is a new group, enqueue it in the new top level
1164 if (!new_traces_in_group.empty())
1165 new_top_level_items.push_back(new_trace_group);
1169 // Enqueue the remaining logic channels in a group
1170 vector< shared_ptr<Channel> > logic_channels;
1171 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1172 [](const shared_ptr<Channel>& c) {
1173 return c->type() == sigrok::ChannelType::LOGIC; });
1175 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1176 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1178 if (non_grouped_logic_signals.size() > 0) {
1179 const shared_ptr<TraceGroup> non_grouped_trace_group(
1180 make_shared<TraceGroup>());
1181 for (shared_ptr<Trace> trace : non_grouped_logic_signals)
1182 non_grouped_trace_group->add_child_item(trace);
1184 non_grouped_trace_group->restack_items();
1185 new_top_level_items.push_back(non_grouped_trace_group);
1188 // Enqueue the remaining channels as free ungrouped traces
1189 const vector< shared_ptr<Trace> > new_top_level_signals =
1190 extract_new_traces_for_channels(channels, signal_map, add_traces);
1191 new_top_level_items.insert(new_top_level_items.end(),
1192 new_top_level_signals.begin(), new_top_level_signals.end());
1194 // Enqueue any remaining traces i.e. decode traces
1195 new_top_level_items.insert(new_top_level_items.end(),
1196 add_traces.begin(), add_traces.end());
1198 // Remove any removed traces
1199 for (shared_ptr<Trace> trace : remove_traces) {
1200 TraceTreeItemOwner *const owner = trace->owner();
1202 owner->remove_child_item(trace);
1205 // Remove any empty trace groups
1206 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1207 if (group->child_items().size() == 0) {
1208 remove_child_item(group);
1212 // Add and position the pending top levels items
1213 int offset = v_extents().second;
1214 for (auto item : new_top_level_items) {
1215 add_child_item(item);
1217 // Position the item after the last item or at the top if there is none
1218 const pair<int, int> extents = item->v_extents();
1220 if (item->enabled())
1221 offset += -extents.first;
1223 item->force_to_v_offset(offset);
1225 if (item->enabled())
1226 offset += extents.second;
1232 viewport_->update();
1234 if (reset_scrollbar)
1235 set_scroll_default();
1238 void View::capture_state_updated(int state)
1240 if (state == Session::Running) {
1241 set_time_unit(util::TimeUnit::Samples);
1243 trigger_markers_.clear();
1246 if (state == Session::Stopped) {
1247 // After acquisition has stopped we need to re-calculate the ticks once
1248 // as it's otherwise done when the user pans or zooms, which is too late
1249 calculate_tick_spacing();
1251 // Reset "always zoom to fit", the acquisition has stopped
1252 if (always_zoom_to_fit_) {
1253 always_zoom_to_fit_ = false;
1254 always_zoom_to_fit_changed(false);
1259 void View::data_updated()
1261 if (always_zoom_to_fit_ || sticky_scrolling_) {
1262 if (!delayed_view_updater_.isActive())
1263 delayed_view_updater_.start();
1265 determine_time_unit();
1268 viewport_->update();
1272 void View::perform_delayed_view_update()
1274 if (always_zoom_to_fit_)
1277 if (sticky_scrolling_) {
1278 // Make right side of the view sticky
1281 get_scroll_layout(length, offset);
1283 const QSize areaSize = viewport_->size();
1284 length = max(length - areaSize.width(), 0.0);
1286 set_offset(scale_ * length);
1289 determine_time_unit();
1292 viewport_->update();
1295 void View::process_sticky_events()
1297 if (sticky_events_ & TraceTreeItemHExtentsChanged)
1299 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
1300 restack_all_trace_tree_items();
1304 // Clear the sticky events
1308 void View::on_hover_point_changed()
1310 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1311 list_by_type<TraceTreeItem>());
1312 for (shared_ptr<TraceTreeItem> r : trace_tree_items)
1313 r->hover_point_changed();
1316 } // namespace TraceView
1317 } // namespace views