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),
161 connect(scrollarea_.horizontalScrollBar(), SIGNAL(valueChanged(int)),
162 this, SLOT(h_scroll_value_changed(int)));
163 connect(scrollarea_.verticalScrollBar(), SIGNAL(valueChanged(int)),
164 this, SLOT(v_scroll_value_changed()));
166 connect(header_, SIGNAL(selection_changed()),
167 ruler_, SLOT(clear_selection()));
168 connect(ruler_, SIGNAL(selection_changed()),
169 header_, SLOT(clear_selection()));
171 connect(header_, SIGNAL(selection_changed()),
172 this, SIGNAL(selection_changed()));
173 connect(ruler_, SIGNAL(selection_changed()),
174 this, SIGNAL(selection_changed()));
176 connect(this, SIGNAL(hover_point_changed()),
177 this, SLOT(on_hover_point_changed()));
179 connect(&lazy_event_handler_, SIGNAL(timeout()),
180 this, SLOT(process_sticky_events()));
181 lazy_event_handler_.setSingleShot(true);
183 connect(&delayed_view_updater_, SIGNAL(timeout()),
184 this, SLOT(perform_delayed_view_update()));
185 delayed_view_updater_.setSingleShot(true);
186 delayed_view_updater_.setInterval(1000 / MaxViewAutoUpdateRate);
188 /* To let the scroll area fill up the parent QWidget (this), we need a layout */
189 QHBoxLayout *layout = new QHBoxLayout(this);
191 layout->setContentsMargins(0, 0, 0, 0);
192 layout->addWidget(&scrollarea_);
194 scrollarea_.setViewport(viewport_);
196 viewport_->installEventFilter(this);
197 ruler_->installEventFilter(this);
198 header_->installEventFilter(this);
200 // Trigger the initial event manually. The default device has signals
201 // which were created before this object came into being
204 // make sure the transparent widgets are on the top
208 // Update the zoom state
209 calculate_tick_spacing();
212 Session& View::session()
217 const Session& View::session() const
222 std::unordered_set< std::shared_ptr<Signal> > View::signals() const
227 void View::clear_signals()
232 void View::add_signal(const shared_ptr<Signal> signal)
234 signals_.insert(signal);
238 void View::clear_decode_signals()
240 decode_traces_.clear();
243 void View::add_decode_signal(shared_ptr<data::SignalBase> signalbase)
245 shared_ptr<DecodeTrace> d(
246 new DecodeTrace(session_, signalbase, decode_traces_.size()));
247 decode_traces_.push_back(d);
250 void View::remove_decode_signal(shared_ptr<data::SignalBase> signalbase)
252 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
253 if ((*i)->base() == signalbase) {
254 decode_traces_.erase(i);
266 const View* View::view() const
271 Viewport* View::viewport()
276 const Viewport* View::viewport() const
281 void View::save_settings(QSettings &settings) const
283 settings.setValue("scale", scale_);
284 settings.setValue("v_offset",
285 scrollarea_.verticalScrollBar()->sliderPosition());
287 std::stringstream ss;
288 boost::archive::text_oarchive oa(ss);
289 oa << boost::serialization::make_nvp("offset", offset_);
290 settings.setValue("offset", QString::fromStdString(ss.str()));
292 for (shared_ptr<Signal> signal : signals_) {
293 settings.beginGroup(signal->base()->internal_name());
294 signal->save_settings(settings);
299 void View::restore_settings(QSettings &settings)
301 // Note: It is assumed that this function is only called once,
302 // immediately after restoring a previous session.
304 if (settings.contains("scale"))
305 set_scale(settings.value("scale").toDouble());
307 if (settings.contains("offset")) {
308 util::Timestamp offset;
309 std::stringstream ss;
310 ss << settings.value("offset").toString().toStdString();
312 boost::archive::text_iarchive ia(ss);
313 ia >> boost::serialization::make_nvp("offset", offset);
318 for (shared_ptr<Signal> signal : signals_) {
319 settings.beginGroup(signal->base()->internal_name());
320 signal->restore_settings(settings);
324 if (settings.contains("v_offset")) {
325 saved_v_offset_ = settings.value("v_offset").toInt();
326 set_v_offset(saved_v_offset_);
327 scroll_needs_defaults_ = false;
328 // Note: see resizeEvent() for additional information
332 vector< shared_ptr<TimeItem> > View::time_items() const
334 const vector<shared_ptr<Flag>> f(flags());
335 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
336 items.push_back(cursors_);
337 items.push_back(cursors_->first());
338 items.push_back(cursors_->second());
340 for (auto trigger_marker : trigger_markers_)
341 items.push_back(trigger_marker);
346 double View::scale() const
351 void View::set_scale(double scale)
353 if (scale_ != scale) {
355 Q_EMIT scale_changed();
359 const Timestamp& View::offset() const
364 void View::set_offset(const pv::util::Timestamp& offset)
366 if (offset_ != offset) {
368 Q_EMIT offset_changed();
372 int View::owner_visual_v_offset() const
374 return -scrollarea_.verticalScrollBar()->sliderPosition();
377 void View::set_v_offset(int offset)
379 scrollarea_.verticalScrollBar()->setSliderPosition(offset);
384 unsigned int View::depth() const
389 pv::util::SIPrefix View::tick_prefix() const
394 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
396 if (tick_prefix_ != tick_prefix) {
397 tick_prefix_ = tick_prefix;
398 Q_EMIT tick_prefix_changed();
402 unsigned int View::tick_precision() const
404 return tick_precision_;
407 void View::set_tick_precision(unsigned tick_precision)
409 if (tick_precision_ != tick_precision) {
410 tick_precision_ = tick_precision;
411 Q_EMIT tick_precision_changed();
415 const pv::util::Timestamp& View::tick_period() const
420 void View::set_tick_period(const pv::util::Timestamp& tick_period)
422 if (tick_period_ != tick_period) {
423 tick_period_ = tick_period;
424 Q_EMIT tick_period_changed();
428 TimeUnit View::time_unit() const
433 void View::set_time_unit(pv::util::TimeUnit time_unit)
435 if (time_unit_ != time_unit) {
436 time_unit_ = time_unit;
437 Q_EMIT time_unit_changed();
441 void View::zoom(double steps)
443 zoom(steps, viewport_->width() / 2);
446 void View::zoom(double steps, int offset)
448 set_zoom(scale_ * pow(3.0/2.0, -steps), offset);
451 void View::zoom_fit(bool gui_state)
453 // Act as one-shot when stopped, toggle along with the GUI otherwise
454 if (session_.get_capture_state() == Session::Stopped) {
455 always_zoom_to_fit_ = false;
456 always_zoom_to_fit_changed(false);
458 always_zoom_to_fit_ = gui_state;
459 always_zoom_to_fit_changed(gui_state);
462 const pair<Timestamp, Timestamp> extents = get_time_extents();
463 const Timestamp delta = extents.second - extents.first;
464 if (delta < Timestamp("1e-12"))
468 const int w = viewport_->width();
472 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
473 set_scale_offset(scale.convert_to<double>(), extents.first);
476 void View::zoom_one_to_one()
478 using pv::data::SignalData;
480 // Make a set of all the visible data objects
481 set< shared_ptr<SignalData> > visible_data = get_visible_data();
482 if (visible_data.empty())
486 const int w = viewport_->width();
490 set_zoom(1.0 / session_.get_samplerate(), w / 2);
493 void View::set_scale_offset(double scale, const Timestamp& offset)
495 // Disable sticky scrolling / always zoom to fit when acquisition runs
496 // and user drags the viewport
497 if ((scale_ == scale) && (offset_ != offset) &&
498 (session_.get_capture_state() == Session::Running)) {
500 if (sticky_scrolling_) {
501 sticky_scrolling_ = false;
502 sticky_scrolling_changed(false);
505 if (always_zoom_to_fit_) {
506 always_zoom_to_fit_ = false;
507 always_zoom_to_fit_changed(false);
514 calculate_tick_spacing();
521 set< shared_ptr<SignalData> > View::get_visible_data() const
523 // Make a set of all the visible data objects
524 set< shared_ptr<SignalData> > visible_data;
525 for (const shared_ptr<Signal> sig : signals_)
527 visible_data.insert(sig->data());
532 pair<Timestamp, Timestamp> View::get_time_extents() const
534 boost::optional<Timestamp> left_time, right_time;
535 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
536 for (const shared_ptr<SignalData> d : visible_data) {
537 const vector< shared_ptr<Segment> > segments =
539 for (const shared_ptr<Segment> &s : segments) {
540 double samplerate = s->samplerate();
541 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
543 const Timestamp start_time = s->start_time();
544 left_time = left_time ?
545 min(*left_time, start_time) :
547 right_time = right_time ?
548 max(*right_time, start_time + d->max_sample_count() / samplerate) :
549 start_time + d->max_sample_count() / samplerate;
553 if (!left_time || !right_time)
554 return make_pair(0, 0);
556 assert(*left_time < *right_time);
557 return make_pair(*left_time, *right_time);
560 void View::enable_sticky_scrolling(bool state)
562 sticky_scrolling_ = state;
565 void View::enable_coloured_bg(bool state)
567 const vector<shared_ptr<TraceTreeItem>> items(
568 list_by_type<TraceTreeItem>());
570 for (shared_ptr<TraceTreeItem> i : items) {
571 // Can't cast to Trace because it's abstract, so we need to
572 // check for any derived classes individually
574 shared_ptr<AnalogSignal> a = dynamic_pointer_cast<AnalogSignal>(i);
576 a->set_coloured_bg(state);
578 shared_ptr<LogicSignal> l = dynamic_pointer_cast<LogicSignal>(i);
580 l->set_coloured_bg(state);
583 shared_ptr<DecodeTrace> d = dynamic_pointer_cast<DecodeTrace>(i);
585 d->set_coloured_bg(state);
592 bool View::cursors_shown() const
594 return show_cursors_;
597 void View::show_cursors(bool show)
599 show_cursors_ = show;
604 void View::centre_cursors()
606 const double time_width = scale_ * viewport_->width();
607 cursors_->first()->set_time(offset_ + time_width * 0.4);
608 cursors_->second()->set_time(offset_ + time_width * 0.6);
613 std::shared_ptr<CursorPair> View::cursors() const
618 void View::add_flag(const Timestamp& time)
620 flags_.push_back(shared_ptr<Flag>(new Flag(*this, time,
621 QString("%1").arg(next_flag_text_))));
623 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
624 (next_flag_text_ + 1);
626 time_item_appearance_changed(true, true);
629 void View::remove_flag(std::shared_ptr<Flag> flag)
632 time_item_appearance_changed(true, true);
635 vector< std::shared_ptr<Flag> > View::flags() const
637 vector< std::shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
638 stable_sort(flags.begin(), flags.end(),
639 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
640 return a->time() < b->time();
646 const QPoint& View::hover_point() const
651 void View::restack_all_trace_tree_items()
653 // Make a list of owners that is sorted from deepest first
654 const vector<shared_ptr<TraceTreeItem>> items(
655 list_by_type<TraceTreeItem>());
656 set< TraceTreeItemOwner* > owners;
657 for (const auto &r : items)
658 owners.insert(r->owner());
659 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
660 sort(sorted_owners.begin(), sorted_owners.end(),
661 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
662 return a->depth() > b->depth(); });
664 // Restack the items recursively
665 for (auto &o : sorted_owners)
668 // Re-assign background colors
669 bool next_bgcolour_state = 0;
671 for (auto &o : sorted_owners)
672 next_bgcolour_state = o->reassign_bgcolour_states(next_bgcolour_state);
674 // Animate the items to their destination
675 for (const auto &i : items)
676 i->animate_to_layout_v_offset();
679 void View::trigger_event(util::Timestamp location)
681 trigger_markers_.push_back(shared_ptr<TriggerMarker>(
682 new TriggerMarker(*this, location)));
685 void View::get_scroll_layout(double &length, Timestamp &offset) const
687 const pair<Timestamp, Timestamp> extents = get_time_extents();
688 length = ((extents.second - extents.first) / scale_).convert_to<double>();
689 offset = offset_ / scale_;
692 void View::set_zoom(double scale, int offset)
694 // Reset the "always zoom to fit" feature as the user changed the zoom
695 always_zoom_to_fit_ = false;
696 always_zoom_to_fit_changed(false);
698 const Timestamp cursor_offset = offset_ + scale_ * offset;
699 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
700 const Timestamp new_offset = cursor_offset - new_scale * offset;
701 set_scale_offset(new_scale.convert_to<double>(), new_offset);
704 void View::calculate_tick_spacing()
706 const double SpacingIncrement = 10.0f;
707 const double MinValueSpacing = 40.0f;
709 // Figure out the highest numeric value visible on a label
710 const QSize areaSize = viewport_->size();
711 const Timestamp max_time = max(fabs(offset_),
712 fabs(offset_ + scale_ * areaSize.width()));
714 double min_width = SpacingIncrement;
715 double label_width, tick_period_width;
717 QFontMetrics m(QApplication::font());
719 // Copies of the member variables with the same name, used in the calculation
720 // and written back afterwards, so that we don't emit signals all the time
721 // during the calculation.
722 pv::util::Timestamp tick_period = tick_period_;
723 pv::util::SIPrefix tick_prefix = tick_prefix_;
724 unsigned tick_precision = tick_precision_;
727 const double min_period = scale_ * min_width;
729 const int order = (int)floorf(log10f(min_period));
730 const pv::util::Timestamp order_decimal =
731 pow(pv::util::Timestamp(10), order);
733 // Allow for a margin of error so that a scale unit of 1 can be used.
734 // Otherwise, for a SU of 1 the tick period will almost always be below
735 // the min_period by a small amount - and thus skipped in favor of 2.
736 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
737 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
738 double tp_with_margin;
739 unsigned int unit = 0;
742 tp_with_margin = order_decimal.convert_to<double>() *
743 (ScaleUnits[unit++] + tp_margin);
744 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
746 tick_period = order_decimal * ScaleUnits[unit - 1];
747 tick_prefix = static_cast<pv::util::SIPrefix>(
748 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
750 // Precision is the number of fractional digits required, not
751 // taking the prefix into account (and it must never be negative)
752 tick_precision = std::max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
754 tick_period_width = (tick_period / scale_).convert_to<double>();
756 const QString label_text = Ruler::format_time_with_distance(
757 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
759 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
760 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
763 min_width += SpacingIncrement;
764 } while (tick_period_width < label_width);
766 set_tick_period(tick_period);
767 set_tick_prefix(tick_prefix);
768 set_tick_precision(tick_precision);
771 void View::update_scroll()
774 QScrollBar *hscrollbar = scrollarea_.horizontalScrollBar();
775 QScrollBar *vscrollbar = scrollarea_.verticalScrollBar();
777 const QSize areaSize = viewport_->size();
779 // Set the horizontal scroll bar
782 get_scroll_layout(length, offset);
783 length = max(length - areaSize.width(), 0.0);
785 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
787 hscrollbar->setPageStep(areaSize.width() / 2);
788 hscrollbar->setSingleStep(major_tick_distance);
790 updating_scroll_ = true;
792 if (length < MaxScrollValue) {
793 hscrollbar->setRange(0, length);
794 hscrollbar->setSliderPosition(offset.convert_to<double>());
796 hscrollbar->setRange(0, MaxScrollValue);
797 hscrollbar->setSliderPosition(
798 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
801 updating_scroll_ = false;
803 // Set the vertical scrollbar
804 vscrollbar->setPageStep(areaSize.height());
805 vscrollbar->setSingleStep(areaSize.height() / 8);
807 const pair<int, int> extents = v_extents();
809 // Don't change the scrollbar range if there are no traces
810 if (extents.first != extents.second)
811 vscrollbar->setRange(extents.first - areaSize.height(),
814 if (scroll_needs_defaults_)
815 set_scroll_default();
818 void View::reset_scroll()
820 scrollarea_.verticalScrollBar()->setRange(0, 0);
823 void View::set_scroll_default()
827 const QSize areaSize = viewport_->size();
829 // Special case: when starting up and the window isn't visible yet,
830 // areaSize is [0, 0]. In this case we want to be called again later
831 if (areaSize.height() == 0) {
832 scroll_needs_defaults_ = true;
835 scroll_needs_defaults_ = false;
838 const pair<int, int> extents = v_extents();
839 const int trace_height = extents.second - extents.first;
841 // Do all traces fit in the view?
842 if (areaSize.height() >= trace_height)
843 // Center all traces vertically
844 set_v_offset(extents.first -
845 ((areaSize.height() - trace_height) / 2));
847 // Put the first trace at the top, letting the bottom ones overflow
848 set_v_offset(extents.first);
851 void View::update_layout()
853 scrollarea_.setViewportMargins(
854 header_->sizeHint().width() - Header::BaselineOffset,
855 ruler_->sizeHint().height(), 0, 0);
856 ruler_->setGeometry(viewport_->x(), 0,
857 viewport_->width(), ruler_->extended_size_hint().height());
858 header_->setGeometry(0, viewport_->y(),
859 header_->extended_size_hint().width(), viewport_->height());
863 TraceTreeItemOwner* View::find_prevalent_trace_group(
864 const shared_ptr<sigrok::ChannelGroup> &group,
865 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
870 unordered_set<TraceTreeItemOwner*> owners;
871 vector<TraceTreeItemOwner*> owner_list;
873 // Make a set and a list of all the owners
874 for (const auto &channel : group->channels()) {
875 for (auto entry : signal_map) {
876 if (entry.first->channel() == channel) {
877 TraceTreeItemOwner *const o = (entry.second)->owner();
878 owner_list.push_back(o);
884 // Iterate through the list of owners, and find the most prevalent
885 size_t max_prevalence = 0;
886 TraceTreeItemOwner *prevalent_owner = nullptr;
887 for (TraceTreeItemOwner *owner : owners) {
888 const size_t prevalence = std::count_if(
889 owner_list.begin(), owner_list.end(),
890 [&](TraceTreeItemOwner *o) { return o == owner; });
891 if (prevalence > max_prevalence) {
892 max_prevalence = prevalence;
893 prevalent_owner = owner;
897 return prevalent_owner;
900 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
901 const vector< shared_ptr<sigrok::Channel> > &channels,
902 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
904 set< shared_ptr<Trace> > &add_list)
906 vector< shared_ptr<Trace> > filtered_traces;
908 for (const auto &channel : channels) {
909 for (auto entry : signal_map) {
910 if (entry.first->channel() == channel) {
911 shared_ptr<Trace> trace = entry.second;
912 const auto list_iter = add_list.find(trace);
913 if (list_iter == add_list.end())
916 filtered_traces.push_back(trace);
917 add_list.erase(list_iter);
922 return filtered_traces;
925 void View::determine_time_unit()
927 // Check whether we know the sample rate and hence can use time as the unit
928 if (time_unit_ == util::TimeUnit::Samples) {
929 // Check all signals but...
930 for (const shared_ptr<Signal> signal : signals_) {
931 const shared_ptr<SignalData> data = signal->data();
933 // ...only check first segment of each
934 const vector< shared_ptr<Segment> > segments = data->segments();
935 if (!segments.empty())
936 if (segments[0]->samplerate()) {
937 set_time_unit(util::TimeUnit::Time);
944 bool View::eventFilter(QObject *object, QEvent *event)
946 const QEvent::Type type = event->type();
947 if (type == QEvent::MouseMove) {
949 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
950 if (object == viewport_)
951 hover_point_ = mouse_event->pos();
952 else if (object == ruler_)
953 hover_point_ = QPoint(mouse_event->x(), 0);
954 else if (object == header_)
955 hover_point_ = QPoint(0, mouse_event->y());
957 hover_point_ = QPoint(-1, -1);
959 hover_point_changed();
961 } else if (type == QEvent::Leave) {
962 hover_point_ = QPoint(-1, -1);
963 hover_point_changed();
966 return QObject::eventFilter(object, event);
969 void View::resizeEvent(QResizeEvent*)
973 // This is somewhat of a hack, unfortunately. We cannot use
974 // set_v_offset() from within restore_settings() as the view
975 // at that point is neither visible nor properly sized.
976 // This is the least intrusive workaround I could come up
977 // with: set the vertical offset when the view is visible and
978 // resized to its final size. Resize events that are sent
979 // when the view is invisible must be ignored as they have
980 // wrong sizes, potentially preventing the v offset to be
982 if (isVisible() && saved_v_offset_) {
983 set_v_offset(saved_v_offset_);
988 void View::row_item_appearance_changed(bool label, bool content)
996 void View::time_item_appearance_changed(bool label, bool content)
1001 viewport_->update();
1004 void View::extents_changed(bool horz, bool vert)
1007 (horz ? TraceTreeItemHExtentsChanged : 0) |
1008 (vert ? TraceTreeItemVExtentsChanged : 0);
1009 lazy_event_handler_.start();
1012 void View::h_scroll_value_changed(int value)
1014 if (updating_scroll_)
1017 // Disable sticky scrolling when user moves the horizontal scroll bar
1018 // during a running acquisition
1019 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1020 sticky_scrolling_ = false;
1021 sticky_scrolling_changed(false);
1024 const int range = scrollarea_.horizontalScrollBar()->maximum();
1025 if (range < MaxScrollValue)
1026 set_offset(scale_ * value);
1030 get_scroll_layout(length, offset);
1031 set_offset(scale_ * length * value / MaxScrollValue);
1035 viewport_->update();
1038 void View::v_scroll_value_changed()
1041 viewport_->update();
1044 void View::signals_changed()
1046 using sigrok::Channel;
1048 vector< shared_ptr<Channel> > channels;
1049 shared_ptr<sigrok::Device> sr_dev;
1051 // Do we need to set the vertical scrollbar to its default position later?
1052 // We do if there are no traces, i.e. the scroll bar has no range set
1053 bool reset_scrollbar =
1054 (scrollarea_.verticalScrollBar()->minimum() ==
1055 scrollarea_.verticalScrollBar()->maximum());
1057 if (!session_.device()) {
1061 sr_dev = session_.device()->device();
1063 channels = sr_dev->channels();
1066 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1068 // Make a list of traces that are being added, and a list of traces
1069 // that are being removed
1070 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1071 const set<shared_ptr<Trace>> prev_traces(
1072 prev_trace_list.begin(), prev_trace_list.end());
1074 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1076 #ifdef ENABLE_DECODE
1077 traces.insert(decode_traces_.begin(), decode_traces_.end());
1080 set< shared_ptr<Trace> > add_traces;
1081 set_difference(traces.begin(), traces.end(),
1082 prev_traces.begin(), prev_traces.end(),
1083 inserter(add_traces, add_traces.begin()));
1085 set< shared_ptr<Trace> > remove_traces;
1086 set_difference(prev_traces.begin(), prev_traces.end(),
1087 traces.begin(), traces.end(),
1088 inserter(remove_traces, remove_traces.begin()));
1090 // Make a look-up table of sigrok Channels to pulseview Signals
1091 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1093 for (const shared_ptr<Signal> &sig : signals_)
1094 signal_map[sig->base()] = sig;
1096 // Populate channel groups
1098 for (auto entry : sr_dev->channel_groups()) {
1099 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1101 if (group->channels().size() <= 1)
1104 // Find best trace group to add to
1105 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1108 // If there is no trace group, create one
1109 shared_ptr<TraceGroup> new_trace_group;
1111 new_trace_group.reset(new TraceGroup());
1112 owner = new_trace_group.get();
1115 // Extract traces for the trace group, removing them from
1117 const vector< shared_ptr<Trace> > new_traces_in_group =
1118 extract_new_traces_for_channels(group->channels(),
1119 signal_map, add_traces);
1121 // Add the traces to the group
1122 const pair<int, int> prev_v_extents = owner->v_extents();
1123 int offset = prev_v_extents.second - prev_v_extents.first;
1124 for (shared_ptr<Trace> trace : new_traces_in_group) {
1126 owner->add_child_item(trace);
1128 const pair<int, int> extents = trace->v_extents();
1129 if (trace->enabled())
1130 offset += -extents.first;
1131 trace->force_to_v_offset(offset);
1132 if (trace->enabled())
1133 offset += extents.second;
1136 if (new_trace_group) {
1137 // Assign proper vertical offsets to each channel in the group
1138 new_trace_group->restack_items();
1140 // If this is a new group, enqueue it in the new top level
1142 if (!new_traces_in_group.empty())
1143 new_top_level_items.push_back(new_trace_group);
1147 // Enqueue the remaining logic channels in a group
1148 vector< shared_ptr<Channel> > logic_channels;
1149 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1150 [](const shared_ptr<Channel>& c) {
1151 return c->type() == sigrok::ChannelType::LOGIC; });
1153 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1154 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1156 if (non_grouped_logic_signals.size() > 0) {
1157 const shared_ptr<TraceGroup> non_grouped_trace_group(
1158 make_shared<TraceGroup>());
1159 for (shared_ptr<Trace> trace : non_grouped_logic_signals)
1160 non_grouped_trace_group->add_child_item(trace);
1162 non_grouped_trace_group->restack_items();
1163 new_top_level_items.push_back(non_grouped_trace_group);
1166 // Enqueue the remaining channels as free ungrouped traces
1167 const vector< shared_ptr<Trace> > new_top_level_signals =
1168 extract_new_traces_for_channels(channels, signal_map, add_traces);
1169 new_top_level_items.insert(new_top_level_items.end(),
1170 new_top_level_signals.begin(), new_top_level_signals.end());
1172 // Enqueue any remaining traces i.e. decode traces
1173 new_top_level_items.insert(new_top_level_items.end(),
1174 add_traces.begin(), add_traces.end());
1176 // Remove any removed traces
1177 for (shared_ptr<Trace> trace : remove_traces) {
1178 TraceTreeItemOwner *const owner = trace->owner();
1180 owner->remove_child_item(trace);
1183 // Remove any empty trace groups
1184 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1185 if (group->child_items().size() == 0) {
1186 remove_child_item(group);
1190 // Add and position the pending top levels items
1191 for (auto item : new_top_level_items) {
1192 add_child_item(item);
1194 // Position the item after the last item or at the top if there is none
1195 int offset = v_extents().second;
1196 const pair<int, int> extents = item->v_extents();
1198 if (item->enabled())
1199 offset += -extents.first;
1201 item->force_to_v_offset(offset);
1203 if (item->enabled())
1204 offset += extents.second;
1210 viewport_->update();
1212 if (reset_scrollbar)
1213 set_scroll_default();
1216 void View::capture_state_updated(int state)
1218 if (state == Session::Running) {
1219 set_time_unit(util::TimeUnit::Samples);
1221 trigger_markers_.clear();
1224 if (state == Session::Stopped) {
1225 // After acquisition has stopped we need to re-calculate the ticks once
1226 // as it's otherwise done when the user pans or zooms, which is too late
1227 calculate_tick_spacing();
1229 // Reset "always zoom to fit", the acquisition has stopped
1230 if (always_zoom_to_fit_) {
1231 always_zoom_to_fit_ = false;
1232 always_zoom_to_fit_changed(false);
1237 void View::data_updated()
1239 if (always_zoom_to_fit_ || sticky_scrolling_) {
1240 if (!delayed_view_updater_.isActive())
1241 delayed_view_updater_.start();
1243 determine_time_unit();
1246 viewport_->update();
1250 void View::perform_delayed_view_update()
1252 if (always_zoom_to_fit_)
1255 if (sticky_scrolling_) {
1256 // Make right side of the view sticky
1259 get_scroll_layout(length, offset);
1261 const QSize areaSize = viewport_->size();
1262 length = max(length - areaSize.width(), 0.0);
1264 set_offset(scale_ * length);
1267 determine_time_unit();
1270 viewport_->update();
1273 void View::process_sticky_events()
1275 if (sticky_events_ & TraceTreeItemHExtentsChanged)
1277 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
1278 restack_all_trace_tree_items();
1282 // Clear the sticky events
1286 void View::on_hover_point_changed()
1288 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1289 list_by_type<TraceTreeItem>());
1290 for (shared_ptr<TraceTreeItem> r : trace_tree_items)
1291 r->hover_point_changed();
1294 } // namespace TraceView
1295 } // namespace views