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 <QHBoxLayout>
42 #include <QMouseEvent>
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;
76 using std::dynamic_pointer_cast;
80 using std::make_shared;
84 using std::set_difference;
85 using std::shared_ptr;
86 using std::stringstream;
87 using std::unordered_map;
88 using std::unordered_set;
95 const Timestamp View::MaxScale("1e9");
96 const Timestamp View::MinScale("1e-12");
98 const int View::MaxScrollValue = INT_MAX / 2;
99 const int View::MaxViewAutoUpdateRate = 25; // No more than 25 Hz with sticky scrolling
101 const int View::ScaleUnits[3] = {1, 2, 5};
104 CustomAbstractScrollArea::CustomAbstractScrollArea(QWidget *parent) :
105 QAbstractScrollArea(parent)
109 void CustomAbstractScrollArea::setViewportMargins(int left, int top, int right, int bottom)
111 QAbstractScrollArea::setViewportMargins(left, top, right, bottom);
114 bool CustomAbstractScrollArea::viewportEvent(QEvent *event)
116 switch (event->type()) {
118 case QEvent::MouseButtonPress:
119 case QEvent::MouseButtonRelease:
120 case QEvent::MouseButtonDblClick:
121 case QEvent::MouseMove:
123 case QEvent::TouchBegin:
124 case QEvent::TouchUpdate:
125 case QEvent::TouchEnd:
128 return QAbstractScrollArea::viewportEvent(event);
132 View::View(Session &session, bool is_main_view, QWidget *parent) :
133 ViewBase(session, is_main_view, parent),
134 viewport_(new Viewport(*this)),
135 ruler_(new Ruler(*this)),
136 header_(new Header(*this)),
140 updating_scroll_(false),
141 sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui()
142 always_zoom_to_fit_(false),
144 tick_prefix_(pv::util::SIPrefix::yocto),
146 time_unit_(util::TimeUnit::Time),
147 show_cursors_(false),
148 cursors_(new CursorPair(*this)),
149 next_flag_text_('A'),
151 hover_point_(-1, -1),
152 scroll_needs_defaults_(false),
154 size_finalized_(false)
156 GlobalSettings settings;
157 coloured_bg_ = settings.value(GlobalSettings::Key_View_ColouredBG).toBool();
159 connect(scrollarea_.horizontalScrollBar(), SIGNAL(valueChanged(int)),
160 this, SLOT(h_scroll_value_changed(int)));
161 connect(scrollarea_.verticalScrollBar(), SIGNAL(valueChanged(int)),
162 this, SLOT(v_scroll_value_changed()));
164 connect(header_, SIGNAL(selection_changed()),
165 ruler_, SLOT(clear_selection()));
166 connect(ruler_, SIGNAL(selection_changed()),
167 header_, SLOT(clear_selection()));
169 connect(header_, SIGNAL(selection_changed()),
170 this, SIGNAL(selection_changed()));
171 connect(ruler_, SIGNAL(selection_changed()),
172 this, SIGNAL(selection_changed()));
174 connect(this, SIGNAL(hover_point_changed()),
175 this, SLOT(on_hover_point_changed()));
177 connect(&lazy_event_handler_, SIGNAL(timeout()),
178 this, SLOT(process_sticky_events()));
179 lazy_event_handler_.setSingleShot(true);
181 connect(&delayed_view_updater_, SIGNAL(timeout()),
182 this, SLOT(perform_delayed_view_update()));
183 delayed_view_updater_.setSingleShot(true);
184 delayed_view_updater_.setInterval(1000 / MaxViewAutoUpdateRate);
186 /* To let the scroll area fill up the parent QWidget (this), we need a layout */
187 QHBoxLayout *layout = new QHBoxLayout(this);
189 layout->setContentsMargins(0, 0, 0, 0);
190 layout->addWidget(&scrollarea_);
192 scrollarea_.setViewport(viewport_);
194 viewport_->installEventFilter(this);
195 ruler_->installEventFilter(this);
196 header_->installEventFilter(this);
198 // Trigger the initial event manually. The default device has signals
199 // which were created before this object came into being
202 // make sure the transparent widgets are on the top
206 // Update the zoom state
207 calculate_tick_spacing();
210 Session& View::session()
215 const Session& View::session() const
220 unordered_set< shared_ptr<Signal> > View::signals() const
225 void View::clear_signals()
230 void View::add_signal(const shared_ptr<Signal> signal)
232 signals_.insert(signal);
236 void View::clear_decode_signals()
238 decode_traces_.clear();
241 void View::add_decode_signal(shared_ptr<data::SignalBase> signalbase)
243 shared_ptr<DecodeTrace> d(
244 new DecodeTrace(session_, signalbase, decode_traces_.size()));
245 decode_traces_.push_back(d);
248 void View::remove_decode_signal(shared_ptr<data::SignalBase> signalbase)
250 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
251 if ((*i)->base() == signalbase) {
252 decode_traces_.erase(i);
264 const View* View::view() const
269 Viewport* View::viewport()
274 const Viewport* View::viewport() const
279 void View::save_settings(QSettings &settings) const
281 settings.setValue("scale", scale_);
282 settings.setValue("v_offset",
283 scrollarea_.verticalScrollBar()->sliderPosition());
286 boost::archive::text_oarchive oa(ss);
287 oa << boost::serialization::make_nvp("offset", offset_);
288 settings.setValue("offset", QString::fromStdString(ss.str()));
290 for (shared_ptr<Signal> signal : signals_) {
291 settings.beginGroup(signal->base()->internal_name());
292 signal->save_settings(settings);
297 void View::restore_settings(QSettings &settings)
299 // Note: It is assumed that this function is only called once,
300 // immediately after restoring a previous session.
302 if (settings.contains("scale"))
303 set_scale(settings.value("scale").toDouble());
305 if (settings.contains("offset")) {
306 util::Timestamp offset;
308 ss << settings.value("offset").toString().toStdString();
310 boost::archive::text_iarchive ia(ss);
311 ia >> boost::serialization::make_nvp("offset", offset);
316 for (shared_ptr<Signal> signal : signals_) {
317 settings.beginGroup(signal->base()->internal_name());
318 signal->restore_settings(settings);
322 if (settings.contains("v_offset")) {
323 saved_v_offset_ = settings.value("v_offset").toInt();
324 set_v_offset(saved_v_offset_);
325 scroll_needs_defaults_ = false;
326 // Note: see resizeEvent() for additional information
330 vector< shared_ptr<TimeItem> > View::time_items() const
332 const vector<shared_ptr<Flag>> f(flags());
333 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
334 items.push_back(cursors_);
335 items.push_back(cursors_->first());
336 items.push_back(cursors_->second());
338 for (auto trigger_marker : trigger_markers_)
339 items.push_back(trigger_marker);
344 double View::scale() const
349 void View::set_scale(double scale)
351 if (scale_ != scale) {
353 Q_EMIT scale_changed();
357 const Timestamp& View::offset() const
362 void View::set_offset(const pv::util::Timestamp& offset)
364 if (offset_ != offset) {
366 Q_EMIT offset_changed();
370 int View::owner_visual_v_offset() const
372 return -scrollarea_.verticalScrollBar()->sliderPosition();
375 void View::set_v_offset(int offset)
377 scrollarea_.verticalScrollBar()->setSliderPosition(offset);
382 unsigned int View::depth() const
387 pv::util::SIPrefix View::tick_prefix() const
392 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
394 if (tick_prefix_ != tick_prefix) {
395 tick_prefix_ = tick_prefix;
396 Q_EMIT tick_prefix_changed();
400 unsigned int View::tick_precision() const
402 return tick_precision_;
405 void View::set_tick_precision(unsigned tick_precision)
407 if (tick_precision_ != tick_precision) {
408 tick_precision_ = tick_precision;
409 Q_EMIT tick_precision_changed();
413 const pv::util::Timestamp& View::tick_period() const
418 void View::set_tick_period(const pv::util::Timestamp& tick_period)
420 if (tick_period_ != tick_period) {
421 tick_period_ = tick_period;
422 Q_EMIT tick_period_changed();
426 TimeUnit View::time_unit() const
431 void View::set_time_unit(pv::util::TimeUnit time_unit)
433 if (time_unit_ != time_unit) {
434 time_unit_ = time_unit;
435 Q_EMIT time_unit_changed();
439 void View::zoom(double steps)
441 zoom(steps, viewport_->width() / 2);
444 void View::zoom(double steps, int offset)
446 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
449 void View::zoom_fit(bool gui_state)
451 // Act as one-shot when stopped, toggle along with the GUI otherwise
452 if (session_.get_capture_state() == Session::Stopped) {
453 always_zoom_to_fit_ = false;
454 always_zoom_to_fit_changed(false);
456 always_zoom_to_fit_ = gui_state;
457 always_zoom_to_fit_changed(gui_state);
460 const pair<Timestamp, Timestamp> extents = get_time_extents();
461 const Timestamp delta = extents.second - extents.first;
462 if (delta < Timestamp("1e-12"))
466 const int w = viewport_->width();
470 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
471 set_scale_offset(scale.convert_to<double>(), extents.first);
474 void View::zoom_one_to_one()
476 using pv::data::SignalData;
478 // Make a set of all the visible data objects
479 set< shared_ptr<SignalData> > visible_data = get_visible_data();
480 if (visible_data.empty())
484 const int w = viewport_->width();
488 set_zoom(1.0 / session_.get_samplerate(), w / 2);
491 void View::set_scale_offset(double scale, const Timestamp& offset)
493 // Disable sticky scrolling / always zoom to fit when acquisition runs
494 // and user drags the viewport
495 if ((scale_ == scale) && (offset_ != offset) &&
496 (session_.get_capture_state() == Session::Running)) {
498 if (sticky_scrolling_) {
499 sticky_scrolling_ = false;
500 sticky_scrolling_changed(false);
503 if (always_zoom_to_fit_) {
504 always_zoom_to_fit_ = false;
505 always_zoom_to_fit_changed(false);
512 calculate_tick_spacing();
519 set< shared_ptr<SignalData> > View::get_visible_data() const
521 // Make a set of all the visible data objects
522 set< shared_ptr<SignalData> > visible_data;
523 for (const shared_ptr<Signal> sig : signals_)
525 visible_data.insert(sig->data());
530 pair<Timestamp, Timestamp> View::get_time_extents() const
532 boost::optional<Timestamp> left_time, right_time;
533 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
534 for (const shared_ptr<SignalData> d : visible_data) {
535 const vector< shared_ptr<Segment> > segments = d->segments();
536 for (const shared_ptr<Segment> &s : segments) {
537 double samplerate = s->samplerate();
538 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
540 const Timestamp start_time = s->start_time();
541 left_time = left_time ?
542 min(*left_time, start_time) :
544 right_time = right_time ?
545 max(*right_time, start_time + d->max_sample_count() / samplerate) :
546 start_time + d->max_sample_count() / samplerate;
550 if (!left_time || !right_time)
551 return make_pair(0, 0);
553 assert(*left_time < *right_time);
554 return make_pair(*left_time, *right_time);
557 void View::enable_show_sampling_points(bool state)
564 void View::enable_coloured_bg(bool state)
566 const vector<shared_ptr<TraceTreeItem>> items(
567 list_by_type<TraceTreeItem>());
569 for (shared_ptr<TraceTreeItem> i : items) {
570 // Can't cast to Trace because it's abstract, so we need to
571 // check for any derived classes individually
573 shared_ptr<AnalogSignal> a = dynamic_pointer_cast<AnalogSignal>(i);
575 a->set_coloured_bg(state);
577 shared_ptr<LogicSignal> l = dynamic_pointer_cast<LogicSignal>(i);
579 l->set_coloured_bg(state);
582 shared_ptr<DecodeTrace> d = dynamic_pointer_cast<DecodeTrace>(i);
584 d->set_coloured_bg(state);
591 bool View::cursors_shown() const
593 return show_cursors_;
596 void View::show_cursors(bool show)
598 show_cursors_ = show;
603 void View::centre_cursors()
605 const double time_width = scale_ * viewport_->width();
606 cursors_->first()->set_time(offset_ + time_width * 0.4);
607 cursors_->second()->set_time(offset_ + time_width * 0.6);
612 shared_ptr<CursorPair> View::cursors() const
617 void View::add_flag(const Timestamp& time)
619 flags_.push_back(make_shared<Flag>(*this, time,
620 QString("%1").arg(next_flag_text_)));
622 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
623 (next_flag_text_ + 1);
625 time_item_appearance_changed(true, true);
628 void View::remove_flag(shared_ptr<Flag> flag)
631 time_item_appearance_changed(true, true);
634 vector< shared_ptr<Flag> > View::flags() const
636 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
637 stable_sort(flags.begin(), flags.end(),
638 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
639 return a->time() < b->time();
645 const QPoint& View::hover_point() const
650 void View::restack_all_trace_tree_items()
652 // Make a list of owners that is sorted from deepest first
653 const vector<shared_ptr<TraceTreeItem>> items(
654 list_by_type<TraceTreeItem>());
655 set< TraceTreeItemOwner* > owners;
656 for (const auto &r : items)
657 owners.insert(r->owner());
658 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
659 sort(sorted_owners.begin(), sorted_owners.end(),
660 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
661 return a->depth() > b->depth(); });
663 // Restack the items recursively
664 for (auto &o : sorted_owners)
667 // Re-assign background colors
668 bool next_bgcolour_state = false;
670 for (auto &o : sorted_owners)
671 next_bgcolour_state = o->reassign_bgcolour_states(next_bgcolour_state);
673 // Animate the items to their destination
674 for (const auto &i : items)
675 i->animate_to_layout_v_offset();
678 void View::trigger_event(util::Timestamp location)
680 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
683 void View::get_scroll_layout(double &length, Timestamp &offset) const
685 const pair<Timestamp, Timestamp> extents = get_time_extents();
686 length = ((extents.second - extents.first) / scale_).convert_to<double>();
687 offset = offset_ / scale_;
690 void View::set_zoom(double scale, int offset)
692 // Reset the "always zoom to fit" feature as the user changed the zoom
693 always_zoom_to_fit_ = false;
694 always_zoom_to_fit_changed(false);
696 const Timestamp cursor_offset = offset_ + scale_ * offset;
697 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
698 const Timestamp new_offset = cursor_offset - new_scale * offset;
699 set_scale_offset(new_scale.convert_to<double>(), new_offset);
702 void View::calculate_tick_spacing()
704 const double SpacingIncrement = 10.0f;
705 const double MinValueSpacing = 40.0f;
707 // Figure out the highest numeric value visible on a label
708 const QSize areaSize = viewport_->size();
709 const Timestamp max_time = max(fabs(offset_),
710 fabs(offset_ + scale_ * areaSize.width()));
712 double min_width = SpacingIncrement;
713 double label_width, tick_period_width;
715 QFontMetrics m(QApplication::font());
717 // Copies of the member variables with the same name, used in the calculation
718 // and written back afterwards, so that we don't emit signals all the time
719 // during the calculation.
720 pv::util::Timestamp tick_period = tick_period_;
721 pv::util::SIPrefix tick_prefix = tick_prefix_;
722 unsigned tick_precision = tick_precision_;
725 const double min_period = scale_ * min_width;
727 const int order = (int)floorf(log10f(min_period));
728 const pv::util::Timestamp order_decimal =
729 pow(pv::util::Timestamp(10), order);
731 // Allow for a margin of error so that a scale unit of 1 can be used.
732 // Otherwise, for a SU of 1 the tick period will almost always be below
733 // the min_period by a small amount - and thus skipped in favor of 2.
734 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
735 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
736 double tp_with_margin;
737 unsigned int unit = 0;
740 tp_with_margin = order_decimal.convert_to<double>() *
741 (ScaleUnits[unit++] + tp_margin);
742 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
744 tick_period = order_decimal * ScaleUnits[unit - 1];
745 tick_prefix = static_cast<pv::util::SIPrefix>(
746 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
748 // Precision is the number of fractional digits required, not
749 // taking the prefix into account (and it must never be negative)
750 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
752 tick_period_width = (tick_period / scale_).convert_to<double>();
754 const QString label_text = Ruler::format_time_with_distance(
755 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
757 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
758 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
761 min_width += SpacingIncrement;
762 } while (tick_period_width < label_width);
764 set_tick_period(tick_period);
765 set_tick_prefix(tick_prefix);
766 set_tick_precision(tick_precision);
769 void View::update_scroll()
772 QScrollBar *hscrollbar = scrollarea_.horizontalScrollBar();
773 QScrollBar *vscrollbar = scrollarea_.verticalScrollBar();
775 const QSize areaSize = viewport_->size();
777 // Set the horizontal scroll bar
780 get_scroll_layout(length, offset);
781 length = max(length - areaSize.width(), 0.0);
783 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
785 hscrollbar->setPageStep(areaSize.width() / 2);
786 hscrollbar->setSingleStep(major_tick_distance);
788 updating_scroll_ = true;
790 if (length < MaxScrollValue) {
791 hscrollbar->setRange(0, length);
792 hscrollbar->setSliderPosition(offset.convert_to<double>());
794 hscrollbar->setRange(0, MaxScrollValue);
795 hscrollbar->setSliderPosition(
796 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
799 updating_scroll_ = false;
801 // Set the vertical scrollbar
802 vscrollbar->setPageStep(areaSize.height());
803 vscrollbar->setSingleStep(areaSize.height() / 8);
805 const pair<int, int> extents = v_extents();
807 // Don't change the scrollbar range if there are no traces
808 if (extents.first != extents.second)
809 vscrollbar->setRange(extents.first - areaSize.height(),
812 if (scroll_needs_defaults_)
813 set_scroll_default();
816 void View::reset_scroll()
818 scrollarea_.verticalScrollBar()->setRange(0, 0);
821 void View::set_scroll_default()
825 const QSize areaSize = viewport_->size();
827 const pair<int, int> extents = v_extents();
828 const int trace_height = extents.second - extents.first;
830 // Do all traces fit in the view?
831 if (areaSize.height() >= trace_height)
832 // Center all traces vertically
833 set_v_offset(extents.first -
834 ((areaSize.height() - trace_height) / 2));
836 // Put the first trace at the top, letting the bottom ones overflow
837 set_v_offset(extents.first);
839 // If we're not sure whether setting the defaults worked as
840 // the window wasn't set up entirely yet, we want to be called
841 // again later to make sure
842 scroll_needs_defaults_ = !size_finalized_;
845 void View::update_layout()
847 scrollarea_.setViewportMargins(
848 header_->sizeHint().width() - Header::BaselineOffset,
849 ruler_->sizeHint().height(), 0, 0);
850 ruler_->setGeometry(viewport_->x(), 0,
851 viewport_->width(), ruler_->extended_size_hint().height());
852 header_->setGeometry(0, viewport_->y(),
853 header_->extended_size_hint().width(), viewport_->height());
857 TraceTreeItemOwner* View::find_prevalent_trace_group(
858 const shared_ptr<sigrok::ChannelGroup> &group,
859 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
864 unordered_set<TraceTreeItemOwner*> owners;
865 vector<TraceTreeItemOwner*> owner_list;
867 // Make a set and a list of all the owners
868 for (const auto &channel : group->channels()) {
869 for (auto entry : signal_map) {
870 if (entry.first->channel() == channel) {
871 TraceTreeItemOwner *const o = (entry.second)->owner();
872 owner_list.push_back(o);
878 // Iterate through the list of owners, and find the most prevalent
879 size_t max_prevalence = 0;
880 TraceTreeItemOwner *prevalent_owner = nullptr;
881 for (TraceTreeItemOwner *owner : owners) {
882 const size_t prevalence = count_if(
883 owner_list.begin(), owner_list.end(),
884 [&](TraceTreeItemOwner *o) { return o == owner; });
885 if (prevalence > max_prevalence) {
886 max_prevalence = prevalence;
887 prevalent_owner = owner;
891 return prevalent_owner;
894 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
895 const vector< shared_ptr<sigrok::Channel> > &channels,
896 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
898 set< shared_ptr<Trace> > &add_list)
900 vector< shared_ptr<Trace> > filtered_traces;
902 for (const auto &channel : channels) {
903 for (auto entry : signal_map) {
904 if (entry.first->channel() == channel) {
905 shared_ptr<Trace> trace = entry.second;
906 const auto list_iter = add_list.find(trace);
907 if (list_iter == add_list.end())
910 filtered_traces.push_back(trace);
911 add_list.erase(list_iter);
916 return filtered_traces;
919 void View::determine_time_unit()
921 // Check whether we know the sample rate and hence can use time as the unit
922 if (time_unit_ == util::TimeUnit::Samples) {
923 // Check all signals but...
924 for (const shared_ptr<Signal> signal : signals_) {
925 const shared_ptr<SignalData> data = signal->data();
927 // ...only check first segment of each
928 const vector< shared_ptr<Segment> > segments = data->segments();
929 if (!segments.empty())
930 if (segments[0]->samplerate()) {
931 set_time_unit(util::TimeUnit::Time);
938 bool View::eventFilter(QObject *object, QEvent *event)
940 const QEvent::Type type = event->type();
941 if (type == QEvent::MouseMove) {
943 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
944 if (object == viewport_)
945 hover_point_ = mouse_event->pos();
946 else if (object == ruler_)
947 hover_point_ = QPoint(mouse_event->x(), 0);
948 else if (object == header_)
949 hover_point_ = QPoint(0, mouse_event->y());
951 hover_point_ = QPoint(-1, -1);
953 hover_point_changed();
955 } else if (type == QEvent::Leave) {
956 hover_point_ = QPoint(-1, -1);
957 hover_point_changed();
960 return QObject::eventFilter(object, event);
963 void View::resizeEvent(QResizeEvent*)
967 // This is somewhat of a hack, unfortunately. We cannot use
968 // set_v_offset() from within restore_settings() as the view
969 // at that point is neither visible nor properly sized.
970 // This is the least intrusive workaround I could come up
971 // with: set the vertical offset (or scroll defaults) when
972 // the view is visible and resized to its final size.
973 // Resize events that are sent when the view is not visible
974 // must be ignored as they have wrong sizes, potentially
975 // preventing the v offset from being set successfully.
978 size_finalized_ = true;
980 if (size_finalized_ && saved_v_offset_) {
981 set_v_offset(saved_v_offset_);
985 if (size_finalized_ && scroll_needs_defaults_)
986 set_scroll_default();
989 void View::row_item_appearance_changed(bool label, bool content)
997 void View::time_item_appearance_changed(bool label, bool content)
1002 viewport_->update();
1005 void View::extents_changed(bool horz, bool vert)
1008 (horz ? TraceTreeItemHExtentsChanged : 0) |
1009 (vert ? TraceTreeItemVExtentsChanged : 0);
1010 lazy_event_handler_.start();
1013 void View::h_scroll_value_changed(int value)
1015 if (updating_scroll_)
1018 // Disable sticky scrolling when user moves the horizontal scroll bar
1019 // during a running acquisition
1020 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1021 sticky_scrolling_ = false;
1022 sticky_scrolling_changed(false);
1025 const int range = scrollarea_.horizontalScrollBar()->maximum();
1026 if (range < MaxScrollValue)
1027 set_offset(scale_ * value);
1031 get_scroll_layout(length, offset);
1032 set_offset(scale_ * length * value / MaxScrollValue);
1036 viewport_->update();
1039 void View::v_scroll_value_changed()
1042 viewport_->update();
1045 void View::signals_changed()
1047 using sigrok::Channel;
1049 vector< shared_ptr<Channel> > channels;
1050 shared_ptr<sigrok::Device> sr_dev;
1052 // Do we need to set the vertical scrollbar to its default position later?
1053 // We do if there are no traces, i.e. the scroll bar has no range set
1054 bool reset_scrollbar =
1055 (scrollarea_.verticalScrollBar()->minimum() ==
1056 scrollarea_.verticalScrollBar()->maximum());
1058 if (!session_.device()) {
1062 sr_dev = session_.device()->device();
1064 channels = sr_dev->channels();
1067 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1069 // Make a list of traces that are being added, and a list of traces
1070 // that are being removed
1071 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1072 const set<shared_ptr<Trace>> prev_traces(
1073 prev_trace_list.begin(), prev_trace_list.end());
1075 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1077 #ifdef ENABLE_DECODE
1078 traces.insert(decode_traces_.begin(), decode_traces_.end());
1081 set< shared_ptr<Trace> > add_traces;
1082 set_difference(traces.begin(), traces.end(),
1083 prev_traces.begin(), prev_traces.end(),
1084 inserter(add_traces, add_traces.begin()));
1086 set< shared_ptr<Trace> > remove_traces;
1087 set_difference(prev_traces.begin(), prev_traces.end(),
1088 traces.begin(), traces.end(),
1089 inserter(remove_traces, remove_traces.begin()));
1091 // Make a look-up table of sigrok Channels to pulseview Signals
1092 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1094 for (const shared_ptr<Signal> &sig : signals_)
1095 signal_map[sig->base()] = sig;
1097 // Populate channel groups
1099 for (auto entry : sr_dev->channel_groups()) {
1100 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1102 if (group->channels().size() <= 1)
1105 // Find best trace group to add to
1106 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1109 // If there is no trace group, create one
1110 shared_ptr<TraceGroup> new_trace_group;
1112 new_trace_group.reset(new TraceGroup());
1113 owner = new_trace_group.get();
1116 // Extract traces for the trace group, removing them from
1118 const vector< shared_ptr<Trace> > new_traces_in_group =
1119 extract_new_traces_for_channels(group->channels(),
1120 signal_map, add_traces);
1122 // Add the traces to the group
1123 const pair<int, int> prev_v_extents = owner->v_extents();
1124 int offset = prev_v_extents.second - prev_v_extents.first;
1125 for (shared_ptr<Trace> trace : new_traces_in_group) {
1127 owner->add_child_item(trace);
1129 const pair<int, int> extents = trace->v_extents();
1130 if (trace->enabled())
1131 offset += -extents.first;
1132 trace->force_to_v_offset(offset);
1133 if (trace->enabled())
1134 offset += extents.second;
1137 if (new_trace_group) {
1138 // Assign proper vertical offsets to each channel in the group
1139 new_trace_group->restack_items();
1141 // If this is a new group, enqueue it in the new top level
1143 if (!new_traces_in_group.empty())
1144 new_top_level_items.push_back(new_trace_group);
1148 // Enqueue the remaining logic channels in a group
1149 vector< shared_ptr<Channel> > logic_channels;
1150 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1151 [](const shared_ptr<Channel>& c) {
1152 return c->type() == sigrok::ChannelType::LOGIC; });
1154 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1155 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1157 if (non_grouped_logic_signals.size() > 0) {
1158 const shared_ptr<TraceGroup> non_grouped_trace_group(
1159 make_shared<TraceGroup>());
1160 for (shared_ptr<Trace> trace : non_grouped_logic_signals)
1161 non_grouped_trace_group->add_child_item(trace);
1163 non_grouped_trace_group->restack_items();
1164 new_top_level_items.push_back(non_grouped_trace_group);
1167 // Enqueue the remaining channels as free ungrouped traces
1168 const vector< shared_ptr<Trace> > new_top_level_signals =
1169 extract_new_traces_for_channels(channels, signal_map, add_traces);
1170 new_top_level_items.insert(new_top_level_items.end(),
1171 new_top_level_signals.begin(), new_top_level_signals.end());
1173 // Enqueue any remaining traces i.e. decode traces
1174 new_top_level_items.insert(new_top_level_items.end(),
1175 add_traces.begin(), add_traces.end());
1177 // Remove any removed traces
1178 for (shared_ptr<Trace> trace : remove_traces) {
1179 TraceTreeItemOwner *const owner = trace->owner();
1181 owner->remove_child_item(trace);
1184 // Remove any empty trace groups
1185 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1186 if (group->child_items().size() == 0) {
1187 remove_child_item(group);
1191 // Add and position the pending top levels items
1192 int offset = v_extents().second;
1193 for (auto item : new_top_level_items) {
1194 add_child_item(item);
1196 // Position the item after the last item or at the top if there is none
1197 const pair<int, int> extents = item->v_extents();
1199 if (item->enabled())
1200 offset += -extents.first;
1202 item->force_to_v_offset(offset);
1204 if (item->enabled())
1205 offset += extents.second;
1211 viewport_->update();
1213 if (reset_scrollbar)
1214 set_scroll_default();
1217 void View::capture_state_updated(int state)
1219 if (state == Session::Running) {
1220 set_time_unit(util::TimeUnit::Samples);
1222 trigger_markers_.clear();
1224 // Activate "always zoom to fit" if the setting is enabled and we're
1225 // the main view of this session (other trace views may be used for
1226 // zooming and we don't want to mess them up)
1227 GlobalSettings settings;
1228 bool state = settings.value(GlobalSettings::Key_View_AlwaysZoomToFit).toBool();
1229 if (is_main_view_ && state) {
1230 always_zoom_to_fit_ = true;
1231 always_zoom_to_fit_changed(always_zoom_to_fit_);
1234 // Enable sticky scrolling if the setting is enabled
1235 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
1238 if (state == Session::Stopped) {
1239 // After acquisition has stopped we need to re-calculate the ticks once
1240 // as it's otherwise done when the user pans or zooms, which is too late
1241 calculate_tick_spacing();
1243 // Reset "always zoom to fit", the acquisition has stopped
1244 if (always_zoom_to_fit_) {
1245 // Perform a final zoom-to-fit before disabling
1246 zoom_fit(always_zoom_to_fit_);
1247 always_zoom_to_fit_ = false;
1248 always_zoom_to_fit_changed(always_zoom_to_fit_);
1253 void View::data_updated()
1255 if (always_zoom_to_fit_ || sticky_scrolling_) {
1256 if (!delayed_view_updater_.isActive())
1257 delayed_view_updater_.start();
1259 determine_time_unit();
1262 viewport_->update();
1266 void View::perform_delayed_view_update()
1268 if (always_zoom_to_fit_) {
1270 } else if (sticky_scrolling_) {
1271 // Make right side of the view sticky
1274 get_scroll_layout(length, offset);
1276 const QSize areaSize = viewport_->size();
1277 length = max(length - areaSize.width(), 0.0);
1279 set_offset(scale_ * length);
1282 determine_time_unit();
1285 viewport_->update();
1288 void View::process_sticky_events()
1290 if (sticky_events_ & TraceTreeItemHExtentsChanged)
1292 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
1293 restack_all_trace_tree_items();
1297 // Clear the sticky events
1301 void View::on_hover_point_changed()
1303 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1304 list_by_type<TraceTreeItem>());
1305 for (shared_ptr<TraceTreeItem> r : trace_tree_items)
1306 r->hover_point_changed();
1309 } // namespace TraceView
1310 } // namespace views