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()
148 always_zoom_to_fit_(false),
150 tick_prefix_(pv::util::SIPrefix::yocto),
152 time_unit_(util::TimeUnit::Time),
153 show_cursors_(false),
154 cursors_(new CursorPair(*this)),
155 next_flag_text_('A'),
157 hover_point_(-1, -1),
158 scroll_needs_defaults_(false),
160 size_finalized_(false)
162 connect(scrollarea_.horizontalScrollBar(), SIGNAL(valueChanged(int)),
163 this, SLOT(h_scroll_value_changed(int)));
164 connect(scrollarea_.verticalScrollBar(), SIGNAL(valueChanged(int)),
165 this, SLOT(v_scroll_value_changed()));
167 connect(header_, SIGNAL(selection_changed()),
168 ruler_, SLOT(clear_selection()));
169 connect(ruler_, SIGNAL(selection_changed()),
170 header_, SLOT(clear_selection()));
172 connect(header_, SIGNAL(selection_changed()),
173 this, SIGNAL(selection_changed()));
174 connect(ruler_, SIGNAL(selection_changed()),
175 this, SIGNAL(selection_changed()));
177 connect(this, SIGNAL(hover_point_changed()),
178 this, SLOT(on_hover_point_changed()));
180 connect(&lazy_event_handler_, SIGNAL(timeout()),
181 this, SLOT(process_sticky_events()));
182 lazy_event_handler_.setSingleShot(true);
184 connect(&delayed_view_updater_, SIGNAL(timeout()),
185 this, SLOT(perform_delayed_view_update()));
186 delayed_view_updater_.setSingleShot(true);
187 delayed_view_updater_.setInterval(1000 / MaxViewAutoUpdateRate);
189 /* To let the scroll area fill up the parent QWidget (this), we need a layout */
190 QHBoxLayout *layout = new QHBoxLayout(this);
192 layout->setContentsMargins(0, 0, 0, 0);
193 layout->addWidget(&scrollarea_);
195 scrollarea_.setViewport(viewport_);
197 viewport_->installEventFilter(this);
198 ruler_->installEventFilter(this);
199 header_->installEventFilter(this);
201 // Trigger the initial event manually. The default device has signals
202 // which were created before this object came into being
205 // make sure the transparent widgets are on the top
209 // Update the zoom state
210 calculate_tick_spacing();
213 Session& View::session()
218 const Session& View::session() const
223 std::unordered_set< std::shared_ptr<Signal> > View::signals() const
228 void View::clear_signals()
233 void View::add_signal(const shared_ptr<Signal> signal)
235 signals_.insert(signal);
239 void View::clear_decode_signals()
241 decode_traces_.clear();
244 void View::add_decode_signal(shared_ptr<data::SignalBase> signalbase)
246 shared_ptr<DecodeTrace> d(
247 new DecodeTrace(session_, signalbase, decode_traces_.size()));
248 decode_traces_.push_back(d);
251 void View::remove_decode_signal(shared_ptr<data::SignalBase> signalbase)
253 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
254 if ((*i)->base() == signalbase) {
255 decode_traces_.erase(i);
267 const View* View::view() const
272 Viewport* View::viewport()
277 const Viewport* View::viewport() const
282 void View::save_settings(QSettings &settings) const
284 settings.setValue("scale", scale_);
285 settings.setValue("v_offset",
286 scrollarea_.verticalScrollBar()->sliderPosition());
288 std::stringstream ss;
289 boost::archive::text_oarchive oa(ss);
290 oa << boost::serialization::make_nvp("offset", offset_);
291 settings.setValue("offset", QString::fromStdString(ss.str()));
293 for (shared_ptr<Signal> signal : signals_) {
294 settings.beginGroup(signal->base()->internal_name());
295 signal->save_settings(settings);
300 void View::restore_settings(QSettings &settings)
302 // Note: It is assumed that this function is only called once,
303 // immediately after restoring a previous session.
305 if (settings.contains("scale"))
306 set_scale(settings.value("scale").toDouble());
308 if (settings.contains("offset")) {
309 util::Timestamp offset;
310 std::stringstream ss;
311 ss << settings.value("offset").toString().toStdString();
313 boost::archive::text_iarchive ia(ss);
314 ia >> boost::serialization::make_nvp("offset", offset);
319 for (shared_ptr<Signal> signal : signals_) {
320 settings.beginGroup(signal->base()->internal_name());
321 signal->restore_settings(settings);
325 if (settings.contains("v_offset")) {
326 saved_v_offset_ = settings.value("v_offset").toInt();
327 set_v_offset(saved_v_offset_);
328 scroll_needs_defaults_ = false;
329 // Note: see resizeEvent() for additional information
333 vector< shared_ptr<TimeItem> > View::time_items() const
335 const vector<shared_ptr<Flag>> f(flags());
336 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
337 items.push_back(cursors_);
338 items.push_back(cursors_->first());
339 items.push_back(cursors_->second());
341 for (auto trigger_marker : trigger_markers_)
342 items.push_back(trigger_marker);
347 double View::scale() const
352 void View::set_scale(double scale)
354 if (scale_ != scale) {
356 Q_EMIT scale_changed();
360 const Timestamp& View::offset() const
365 void View::set_offset(const pv::util::Timestamp& offset)
367 if (offset_ != offset) {
369 Q_EMIT offset_changed();
373 int View::owner_visual_v_offset() const
375 return -scrollarea_.verticalScrollBar()->sliderPosition();
378 void View::set_v_offset(int offset)
380 scrollarea_.verticalScrollBar()->setSliderPosition(offset);
385 unsigned int View::depth() const
390 pv::util::SIPrefix View::tick_prefix() const
395 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
397 if (tick_prefix_ != tick_prefix) {
398 tick_prefix_ = tick_prefix;
399 Q_EMIT tick_prefix_changed();
403 unsigned int View::tick_precision() const
405 return tick_precision_;
408 void View::set_tick_precision(unsigned tick_precision)
410 if (tick_precision_ != tick_precision) {
411 tick_precision_ = tick_precision;
412 Q_EMIT tick_precision_changed();
416 const pv::util::Timestamp& View::tick_period() const
421 void View::set_tick_period(const pv::util::Timestamp& tick_period)
423 if (tick_period_ != tick_period) {
424 tick_period_ = tick_period;
425 Q_EMIT tick_period_changed();
429 TimeUnit View::time_unit() const
434 void View::set_time_unit(pv::util::TimeUnit time_unit)
436 if (time_unit_ != time_unit) {
437 time_unit_ = time_unit;
438 Q_EMIT time_unit_changed();
442 void View::zoom(double steps)
444 zoom(steps, viewport_->width() / 2);
447 void View::zoom(double steps, int offset)
449 set_zoom(scale_ * pow(3.0/2.0, -steps), offset);
452 void View::zoom_fit(bool gui_state)
454 // Act as one-shot when stopped, toggle along with the GUI otherwise
455 if (session_.get_capture_state() == Session::Stopped) {
456 always_zoom_to_fit_ = false;
457 always_zoom_to_fit_changed(false);
459 always_zoom_to_fit_ = gui_state;
460 always_zoom_to_fit_changed(gui_state);
463 const pair<Timestamp, Timestamp> extents = get_time_extents();
464 const Timestamp delta = extents.second - extents.first;
465 if (delta < Timestamp("1e-12"))
469 const int w = viewport_->width();
473 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
474 set_scale_offset(scale.convert_to<double>(), extents.first);
477 void View::zoom_one_to_one()
479 using pv::data::SignalData;
481 // Make a set of all the visible data objects
482 set< shared_ptr<SignalData> > visible_data = get_visible_data();
483 if (visible_data.empty())
487 const int w = viewport_->width();
491 set_zoom(1.0 / session_.get_samplerate(), w / 2);
494 void View::set_scale_offset(double scale, const Timestamp& offset)
496 // Disable sticky scrolling / always zoom to fit when acquisition runs
497 // and user drags the viewport
498 if ((scale_ == scale) && (offset_ != offset) &&
499 (session_.get_capture_state() == Session::Running)) {
501 if (sticky_scrolling_) {
502 sticky_scrolling_ = false;
503 sticky_scrolling_changed(false);
506 if (always_zoom_to_fit_) {
507 always_zoom_to_fit_ = false;
508 always_zoom_to_fit_changed(false);
515 calculate_tick_spacing();
522 set< shared_ptr<SignalData> > View::get_visible_data() const
524 // Make a set of all the visible data objects
525 set< shared_ptr<SignalData> > visible_data;
526 for (const shared_ptr<Signal> sig : signals_)
528 visible_data.insert(sig->data());
533 pair<Timestamp, Timestamp> View::get_time_extents() const
535 boost::optional<Timestamp> left_time, right_time;
536 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
537 for (const shared_ptr<SignalData> d : visible_data) {
538 const vector< shared_ptr<Segment> > segments =
540 for (const shared_ptr<Segment> &s : segments) {
541 double samplerate = s->samplerate();
542 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
544 const Timestamp start_time = s->start_time();
545 left_time = left_time ?
546 min(*left_time, start_time) :
548 right_time = right_time ?
549 max(*right_time, start_time + d->max_sample_count() / samplerate) :
550 start_time + d->max_sample_count() / samplerate;
554 if (!left_time || !right_time)
555 return make_pair(0, 0);
557 assert(*left_time < *right_time);
558 return make_pair(*left_time, *right_time);
561 void View::enable_sticky_scrolling(bool state)
563 sticky_scrolling_ = state;
566 void View::enable_coloured_bg(bool state)
568 const vector<shared_ptr<TraceTreeItem>> items(
569 list_by_type<TraceTreeItem>());
571 for (shared_ptr<TraceTreeItem> i : items) {
572 // Can't cast to Trace because it's abstract, so we need to
573 // check for any derived classes individually
575 shared_ptr<AnalogSignal> a = dynamic_pointer_cast<AnalogSignal>(i);
577 a->set_coloured_bg(state);
579 shared_ptr<LogicSignal> l = dynamic_pointer_cast<LogicSignal>(i);
581 l->set_coloured_bg(state);
584 shared_ptr<DecodeTrace> d = dynamic_pointer_cast<DecodeTrace>(i);
586 d->set_coloured_bg(state);
593 bool View::cursors_shown() const
595 return show_cursors_;
598 void View::show_cursors(bool show)
600 show_cursors_ = show;
605 void View::centre_cursors()
607 const double time_width = scale_ * viewport_->width();
608 cursors_->first()->set_time(offset_ + time_width * 0.4);
609 cursors_->second()->set_time(offset_ + time_width * 0.6);
614 std::shared_ptr<CursorPair> View::cursors() const
619 void View::add_flag(const Timestamp& time)
621 flags_.push_back(shared_ptr<Flag>(new Flag(*this, time,
622 QString("%1").arg(next_flag_text_))));
624 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
625 (next_flag_text_ + 1);
627 time_item_appearance_changed(true, true);
630 void View::remove_flag(std::shared_ptr<Flag> flag)
633 time_item_appearance_changed(true, true);
636 vector< std::shared_ptr<Flag> > View::flags() const
638 vector< std::shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
639 stable_sort(flags.begin(), flags.end(),
640 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
641 return a->time() < b->time();
647 const QPoint& View::hover_point() const
652 void View::restack_all_trace_tree_items()
654 // Make a list of owners that is sorted from deepest first
655 const vector<shared_ptr<TraceTreeItem>> items(
656 list_by_type<TraceTreeItem>());
657 set< TraceTreeItemOwner* > owners;
658 for (const auto &r : items)
659 owners.insert(r->owner());
660 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
661 sort(sorted_owners.begin(), sorted_owners.end(),
662 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
663 return a->depth() > b->depth(); });
665 // Restack the items recursively
666 for (auto &o : sorted_owners)
669 // Re-assign background colors
670 bool next_bgcolour_state = 0;
672 for (auto &o : sorted_owners)
673 next_bgcolour_state = o->reassign_bgcolour_states(next_bgcolour_state);
675 // Animate the items to their destination
676 for (const auto &i : items)
677 i->animate_to_layout_v_offset();
680 void View::trigger_event(util::Timestamp location)
682 trigger_markers_.push_back(shared_ptr<TriggerMarker>(
683 new TriggerMarker(*this, location)));
686 void View::get_scroll_layout(double &length, Timestamp &offset) const
688 const pair<Timestamp, Timestamp> extents = get_time_extents();
689 length = ((extents.second - extents.first) / scale_).convert_to<double>();
690 offset = offset_ / scale_;
693 void View::set_zoom(double scale, int offset)
695 // Reset the "always zoom to fit" feature as the user changed the zoom
696 always_zoom_to_fit_ = false;
697 always_zoom_to_fit_changed(false);
699 const Timestamp cursor_offset = offset_ + scale_ * offset;
700 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
701 const Timestamp new_offset = cursor_offset - new_scale * offset;
702 set_scale_offset(new_scale.convert_to<double>(), new_offset);
705 void View::calculate_tick_spacing()
707 const double SpacingIncrement = 10.0f;
708 const double MinValueSpacing = 40.0f;
710 // Figure out the highest numeric value visible on a label
711 const QSize areaSize = viewport_->size();
712 const Timestamp max_time = max(fabs(offset_),
713 fabs(offset_ + scale_ * areaSize.width()));
715 double min_width = SpacingIncrement;
716 double label_width, tick_period_width;
718 QFontMetrics m(QApplication::font());
720 // Copies of the member variables with the same name, used in the calculation
721 // and written back afterwards, so that we don't emit signals all the time
722 // during the calculation.
723 pv::util::Timestamp tick_period = tick_period_;
724 pv::util::SIPrefix tick_prefix = tick_prefix_;
725 unsigned tick_precision = tick_precision_;
728 const double min_period = scale_ * min_width;
730 const int order = (int)floorf(log10f(min_period));
731 const pv::util::Timestamp order_decimal =
732 pow(pv::util::Timestamp(10), order);
734 // Allow for a margin of error so that a scale unit of 1 can be used.
735 // Otherwise, for a SU of 1 the tick period will almost always be below
736 // the min_period by a small amount - and thus skipped in favor of 2.
737 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
738 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
739 double tp_with_margin;
740 unsigned int unit = 0;
743 tp_with_margin = order_decimal.convert_to<double>() *
744 (ScaleUnits[unit++] + tp_margin);
745 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
747 tick_period = order_decimal * ScaleUnits[unit - 1];
748 tick_prefix = static_cast<pv::util::SIPrefix>(
749 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
751 // Precision is the number of fractional digits required, not
752 // taking the prefix into account (and it must never be negative)
753 tick_precision = std::max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
755 tick_period_width = (tick_period / scale_).convert_to<double>();
757 const QString label_text = Ruler::format_time_with_distance(
758 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
760 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
761 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
764 min_width += SpacingIncrement;
765 } while (tick_period_width < label_width);
767 set_tick_period(tick_period);
768 set_tick_prefix(tick_prefix);
769 set_tick_precision(tick_precision);
772 void View::update_scroll()
775 QScrollBar *hscrollbar = scrollarea_.horizontalScrollBar();
776 QScrollBar *vscrollbar = scrollarea_.verticalScrollBar();
778 const QSize areaSize = viewport_->size();
780 // Set the horizontal scroll bar
783 get_scroll_layout(length, offset);
784 length = max(length - areaSize.width(), 0.0);
786 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
788 hscrollbar->setPageStep(areaSize.width() / 2);
789 hscrollbar->setSingleStep(major_tick_distance);
791 updating_scroll_ = true;
793 if (length < MaxScrollValue) {
794 hscrollbar->setRange(0, length);
795 hscrollbar->setSliderPosition(offset.convert_to<double>());
797 hscrollbar->setRange(0, MaxScrollValue);
798 hscrollbar->setSliderPosition(
799 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
802 updating_scroll_ = false;
804 // Set the vertical scrollbar
805 vscrollbar->setPageStep(areaSize.height());
806 vscrollbar->setSingleStep(areaSize.height() / 8);
808 const pair<int, int> extents = v_extents();
810 // Don't change the scrollbar range if there are no traces
811 if (extents.first != extents.second)
812 vscrollbar->setRange(extents.first - areaSize.height(),
815 if (scroll_needs_defaults_)
816 set_scroll_default();
819 void View::reset_scroll()
821 scrollarea_.verticalScrollBar()->setRange(0, 0);
824 void View::set_scroll_default()
828 const QSize areaSize = viewport_->size();
830 // Special case: when starting up and the window isn't visible yet,
831 // areaSize is [0, 0]. In this case we want to be called again later
832 if ((areaSize.height() == 0) || (!size_finalized_)) {
833 scroll_needs_defaults_ = true;
836 scroll_needs_defaults_ = false;
839 const pair<int, int> extents = v_extents();
840 const int trace_height = extents.second - extents.first;
842 // Do all traces fit in the view?
843 if (areaSize.height() >= trace_height)
844 // Center all traces vertically
845 set_v_offset(extents.first -
846 ((areaSize.height() - trace_height) / 2));
848 // Put the first trace at the top, letting the bottom ones overflow
849 set_v_offset(extents.first);
852 void View::update_layout()
854 scrollarea_.setViewportMargins(
855 header_->sizeHint().width() - Header::BaselineOffset,
856 ruler_->sizeHint().height(), 0, 0);
857 ruler_->setGeometry(viewport_->x(), 0,
858 viewport_->width(), ruler_->extended_size_hint().height());
859 header_->setGeometry(0, viewport_->y(),
860 header_->extended_size_hint().width(), viewport_->height());
864 TraceTreeItemOwner* View::find_prevalent_trace_group(
865 const shared_ptr<sigrok::ChannelGroup> &group,
866 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
871 unordered_set<TraceTreeItemOwner*> owners;
872 vector<TraceTreeItemOwner*> owner_list;
874 // Make a set and a list of all the owners
875 for (const auto &channel : group->channels()) {
876 for (auto entry : signal_map) {
877 if (entry.first->channel() == channel) {
878 TraceTreeItemOwner *const o = (entry.second)->owner();
879 owner_list.push_back(o);
885 // Iterate through the list of owners, and find the most prevalent
886 size_t max_prevalence = 0;
887 TraceTreeItemOwner *prevalent_owner = nullptr;
888 for (TraceTreeItemOwner *owner : owners) {
889 const size_t prevalence = std::count_if(
890 owner_list.begin(), owner_list.end(),
891 [&](TraceTreeItemOwner *o) { return o == owner; });
892 if (prevalence > max_prevalence) {
893 max_prevalence = prevalence;
894 prevalent_owner = owner;
898 return prevalent_owner;
901 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
902 const vector< shared_ptr<sigrok::Channel> > &channels,
903 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
905 set< shared_ptr<Trace> > &add_list)
907 vector< shared_ptr<Trace> > filtered_traces;
909 for (const auto &channel : channels) {
910 for (auto entry : signal_map) {
911 if (entry.first->channel() == channel) {
912 shared_ptr<Trace> trace = entry.second;
913 const auto list_iter = add_list.find(trace);
914 if (list_iter == add_list.end())
917 filtered_traces.push_back(trace);
918 add_list.erase(list_iter);
923 return filtered_traces;
926 void View::determine_time_unit()
928 // Check whether we know the sample rate and hence can use time as the unit
929 if (time_unit_ == util::TimeUnit::Samples) {
930 // Check all signals but...
931 for (const shared_ptr<Signal> signal : signals_) {
932 const shared_ptr<SignalData> data = signal->data();
934 // ...only check first segment of each
935 const vector< shared_ptr<Segment> > segments = data->segments();
936 if (!segments.empty())
937 if (segments[0]->samplerate()) {
938 set_time_unit(util::TimeUnit::Time);
945 bool View::eventFilter(QObject *object, QEvent *event)
947 const QEvent::Type type = event->type();
948 if (type == QEvent::MouseMove) {
950 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
951 if (object == viewport_)
952 hover_point_ = mouse_event->pos();
953 else if (object == ruler_)
954 hover_point_ = QPoint(mouse_event->x(), 0);
955 else if (object == header_)
956 hover_point_ = QPoint(0, mouse_event->y());
958 hover_point_ = QPoint(-1, -1);
960 hover_point_changed();
962 } else if (type == QEvent::Leave) {
963 hover_point_ = QPoint(-1, -1);
964 hover_point_changed();
967 return QObject::eventFilter(object, event);
970 void View::resizeEvent(QResizeEvent*)
974 // This is somewhat of a hack, unfortunately. We cannot use
975 // set_v_offset() from within restore_settings() as the view
976 // at that point is neither visible nor properly sized.
977 // This is the least intrusive workaround I could come up
978 // with: set the vertical offset (or scroll defaults) when
979 // the view is visible and resized to its final size.
980 // Resize events that are sent when the view is not visible
981 // must be ignored as they have wrong sizes, potentially
982 // preventing the v offset from being set successfully.
985 size_finalized_ = true;
987 if (size_finalized_ && saved_v_offset_) {
988 set_v_offset(saved_v_offset_);
992 if (size_finalized_ && scroll_needs_defaults_)
993 set_scroll_default();
996 void View::row_item_appearance_changed(bool label, bool content)
1001 viewport_->update();
1004 void View::time_item_appearance_changed(bool label, bool content)
1009 viewport_->update();
1012 void View::extents_changed(bool horz, bool vert)
1015 (horz ? TraceTreeItemHExtentsChanged : 0) |
1016 (vert ? TraceTreeItemVExtentsChanged : 0);
1017 lazy_event_handler_.start();
1020 void View::h_scroll_value_changed(int value)
1022 if (updating_scroll_)
1025 // Disable sticky scrolling when user moves the horizontal scroll bar
1026 // during a running acquisition
1027 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1028 sticky_scrolling_ = false;
1029 sticky_scrolling_changed(false);
1032 const int range = scrollarea_.horizontalScrollBar()->maximum();
1033 if (range < MaxScrollValue)
1034 set_offset(scale_ * value);
1038 get_scroll_layout(length, offset);
1039 set_offset(scale_ * length * value / MaxScrollValue);
1043 viewport_->update();
1046 void View::v_scroll_value_changed()
1049 viewport_->update();
1052 void View::signals_changed()
1054 using sigrok::Channel;
1056 vector< shared_ptr<Channel> > channels;
1057 shared_ptr<sigrok::Device> sr_dev;
1059 // Do we need to set the vertical scrollbar to its default position later?
1060 // We do if there are no traces, i.e. the scroll bar has no range set
1061 bool reset_scrollbar =
1062 (scrollarea_.verticalScrollBar()->minimum() ==
1063 scrollarea_.verticalScrollBar()->maximum());
1065 if (!session_.device()) {
1069 sr_dev = session_.device()->device();
1071 channels = sr_dev->channels();
1074 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1076 // Make a list of traces that are being added, and a list of traces
1077 // that are being removed
1078 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1079 const set<shared_ptr<Trace>> prev_traces(
1080 prev_trace_list.begin(), prev_trace_list.end());
1082 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1084 #ifdef ENABLE_DECODE
1085 traces.insert(decode_traces_.begin(), decode_traces_.end());
1088 set< shared_ptr<Trace> > add_traces;
1089 set_difference(traces.begin(), traces.end(),
1090 prev_traces.begin(), prev_traces.end(),
1091 inserter(add_traces, add_traces.begin()));
1093 set< shared_ptr<Trace> > remove_traces;
1094 set_difference(prev_traces.begin(), prev_traces.end(),
1095 traces.begin(), traces.end(),
1096 inserter(remove_traces, remove_traces.begin()));
1098 // Make a look-up table of sigrok Channels to pulseview Signals
1099 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1101 for (const shared_ptr<Signal> &sig : signals_)
1102 signal_map[sig->base()] = sig;
1104 // Populate channel groups
1106 for (auto entry : sr_dev->channel_groups()) {
1107 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1109 if (group->channels().size() <= 1)
1112 // Find best trace group to add to
1113 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1116 // If there is no trace group, create one
1117 shared_ptr<TraceGroup> new_trace_group;
1119 new_trace_group.reset(new TraceGroup());
1120 owner = new_trace_group.get();
1123 // Extract traces for the trace group, removing them from
1125 const vector< shared_ptr<Trace> > new_traces_in_group =
1126 extract_new_traces_for_channels(group->channels(),
1127 signal_map, add_traces);
1129 // Add the traces to the group
1130 const pair<int, int> prev_v_extents = owner->v_extents();
1131 int offset = prev_v_extents.second - prev_v_extents.first;
1132 for (shared_ptr<Trace> trace : new_traces_in_group) {
1134 owner->add_child_item(trace);
1136 const pair<int, int> extents = trace->v_extents();
1137 if (trace->enabled())
1138 offset += -extents.first;
1139 trace->force_to_v_offset(offset);
1140 if (trace->enabled())
1141 offset += extents.second;
1144 if (new_trace_group) {
1145 // Assign proper vertical offsets to each channel in the group
1146 new_trace_group->restack_items();
1148 // If this is a new group, enqueue it in the new top level
1150 if (!new_traces_in_group.empty())
1151 new_top_level_items.push_back(new_trace_group);
1155 // Enqueue the remaining logic channels in a group
1156 vector< shared_ptr<Channel> > logic_channels;
1157 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1158 [](const shared_ptr<Channel>& c) {
1159 return c->type() == sigrok::ChannelType::LOGIC; });
1161 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1162 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1164 if (non_grouped_logic_signals.size() > 0) {
1165 const shared_ptr<TraceGroup> non_grouped_trace_group(
1166 make_shared<TraceGroup>());
1167 for (shared_ptr<Trace> trace : non_grouped_logic_signals)
1168 non_grouped_trace_group->add_child_item(trace);
1170 non_grouped_trace_group->restack_items();
1171 new_top_level_items.push_back(non_grouped_trace_group);
1174 // Enqueue the remaining channels as free ungrouped traces
1175 const vector< shared_ptr<Trace> > new_top_level_signals =
1176 extract_new_traces_for_channels(channels, signal_map, add_traces);
1177 new_top_level_items.insert(new_top_level_items.end(),
1178 new_top_level_signals.begin(), new_top_level_signals.end());
1180 // Enqueue any remaining traces i.e. decode traces
1181 new_top_level_items.insert(new_top_level_items.end(),
1182 add_traces.begin(), add_traces.end());
1184 // Remove any removed traces
1185 for (shared_ptr<Trace> trace : remove_traces) {
1186 TraceTreeItemOwner *const owner = trace->owner();
1188 owner->remove_child_item(trace);
1191 // Remove any empty trace groups
1192 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1193 if (group->child_items().size() == 0) {
1194 remove_child_item(group);
1198 // Add and position the pending top levels items
1199 for (auto item : new_top_level_items) {
1200 add_child_item(item);
1202 // Position the item after the last item or at the top if there is none
1203 int offset = v_extents().second;
1204 const pair<int, int> extents = item->v_extents();
1206 if (item->enabled())
1207 offset += -extents.first;
1209 item->force_to_v_offset(offset);
1211 if (item->enabled())
1212 offset += extents.second;
1218 viewport_->update();
1220 if (reset_scrollbar)
1221 set_scroll_default();
1224 void View::capture_state_updated(int state)
1226 if (state == Session::Running) {
1227 set_time_unit(util::TimeUnit::Samples);
1229 trigger_markers_.clear();
1232 if (state == Session::Stopped) {
1233 // After acquisition has stopped we need to re-calculate the ticks once
1234 // as it's otherwise done when the user pans or zooms, which is too late
1235 calculate_tick_spacing();
1237 // Reset "always zoom to fit", the acquisition has stopped
1238 if (always_zoom_to_fit_) {
1239 always_zoom_to_fit_ = false;
1240 always_zoom_to_fit_changed(false);
1245 void View::data_updated()
1247 if (always_zoom_to_fit_ || sticky_scrolling_) {
1248 if (!delayed_view_updater_.isActive())
1249 delayed_view_updater_.start();
1251 determine_time_unit();
1254 viewport_->update();
1258 void View::perform_delayed_view_update()
1260 if (always_zoom_to_fit_)
1263 if (sticky_scrolling_) {
1264 // Make right side of the view sticky
1267 get_scroll_layout(length, offset);
1269 const QSize areaSize = viewport_->size();
1270 length = max(length - areaSize.width(), 0.0);
1272 set_offset(scale_ * length);
1275 determine_time_unit();
1278 viewport_->update();
1281 void View::process_sticky_events()
1283 if (sticky_events_ & TraceTreeItemHExtentsChanged)
1285 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
1286 restack_all_trace_tree_items();
1290 // Clear the sticky events
1294 void View::on_hover_point_changed()
1296 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1297 list_by_type<TraceTreeItem>());
1298 for (shared_ptr<TraceTreeItem> r : trace_tree_items)
1299 r->hover_point_changed();
1302 } // namespace TraceView
1303 } // namespace views