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/globalsettings.hpp"
61 #include "pv/devices/device.hpp"
62 #include "pv/data/logic.hpp"
63 #include "pv/data/logicsegment.hpp"
64 #include "pv/util.hpp"
67 #include "decodetrace.hpp"
70 using boost::shared_lock;
71 using boost::shared_mutex;
73 using pv::data::SignalData;
74 using pv::data::Segment;
75 using pv::util::TimeUnit;
76 using pv::util::Timestamp;
78 using std::back_inserter;
81 using std::dynamic_pointer_cast;
84 using std::lock_guard;
87 using std::make_shared;
91 using std::set_difference;
92 using std::shared_ptr;
93 using std::unordered_map;
94 using std::unordered_set;
100 namespace TraceView {
102 const Timestamp View::MaxScale("1e9");
103 const Timestamp View::MinScale("1e-12");
105 const int View::MaxScrollValue = INT_MAX / 2;
106 const int View::MaxViewAutoUpdateRate = 25; // No more than 25 Hz with sticky scrolling
108 const int View::ScaleUnits[3] = {1, 2, 5};
111 CustomAbstractScrollArea::CustomAbstractScrollArea(QWidget *parent) :
112 QAbstractScrollArea(parent)
116 void CustomAbstractScrollArea::setViewportMargins(int left, int top, int right, int bottom)
118 QAbstractScrollArea::setViewportMargins(left, top, right, bottom);
121 bool CustomAbstractScrollArea::viewportEvent(QEvent *event)
123 switch (event->type()) {
125 case QEvent::MouseButtonPress:
126 case QEvent::MouseButtonRelease:
127 case QEvent::MouseButtonDblClick:
128 case QEvent::MouseMove:
130 case QEvent::TouchBegin:
131 case QEvent::TouchUpdate:
132 case QEvent::TouchEnd:
135 return QAbstractScrollArea::viewportEvent(event);
139 View::View(Session &session, bool is_main_view, QWidget *parent) :
140 ViewBase(session, is_main_view, parent),
141 viewport_(new Viewport(*this)),
142 ruler_(new Ruler(*this)),
143 header_(new Header(*this)),
147 updating_scroll_(false),
148 sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui()
149 always_zoom_to_fit_(false),
151 tick_prefix_(pv::util::SIPrefix::yocto),
153 time_unit_(util::TimeUnit::Time),
154 show_cursors_(false),
155 cursors_(new CursorPair(*this)),
156 next_flag_text_('A'),
158 hover_point_(-1, -1),
159 scroll_needs_defaults_(false),
161 size_finalized_(false)
163 GlobalSettings settings;
164 coloured_bg_ = settings.value(GlobalSettings::Key_View_ColouredBG).toBool();
166 connect(scrollarea_.horizontalScrollBar(), SIGNAL(valueChanged(int)),
167 this, SLOT(h_scroll_value_changed(int)));
168 connect(scrollarea_.verticalScrollBar(), SIGNAL(valueChanged(int)),
169 this, SLOT(v_scroll_value_changed()));
171 connect(header_, SIGNAL(selection_changed()),
172 ruler_, SLOT(clear_selection()));
173 connect(ruler_, SIGNAL(selection_changed()),
174 header_, SLOT(clear_selection()));
176 connect(header_, SIGNAL(selection_changed()),
177 this, SIGNAL(selection_changed()));
178 connect(ruler_, SIGNAL(selection_changed()),
179 this, SIGNAL(selection_changed()));
181 connect(this, SIGNAL(hover_point_changed()),
182 this, SLOT(on_hover_point_changed()));
184 connect(&lazy_event_handler_, SIGNAL(timeout()),
185 this, SLOT(process_sticky_events()));
186 lazy_event_handler_.setSingleShot(true);
188 connect(&delayed_view_updater_, SIGNAL(timeout()),
189 this, SLOT(perform_delayed_view_update()));
190 delayed_view_updater_.setSingleShot(true);
191 delayed_view_updater_.setInterval(1000 / MaxViewAutoUpdateRate);
193 /* To let the scroll area fill up the parent QWidget (this), we need a layout */
194 QHBoxLayout *layout = new QHBoxLayout(this);
196 layout->setContentsMargins(0, 0, 0, 0);
197 layout->addWidget(&scrollarea_);
199 scrollarea_.setViewport(viewport_);
201 viewport_->installEventFilter(this);
202 ruler_->installEventFilter(this);
203 header_->installEventFilter(this);
205 // Trigger the initial event manually. The default device has signals
206 // which were created before this object came into being
209 // make sure the transparent widgets are on the top
213 // Update the zoom state
214 calculate_tick_spacing();
217 Session& View::session()
222 const Session& View::session() const
227 std::unordered_set< std::shared_ptr<Signal> > View::signals() const
232 void View::clear_signals()
237 void View::add_signal(const shared_ptr<Signal> signal)
239 signals_.insert(signal);
243 void View::clear_decode_signals()
245 decode_traces_.clear();
248 void View::add_decode_signal(shared_ptr<data::SignalBase> signalbase)
250 shared_ptr<DecodeTrace> d(
251 new DecodeTrace(session_, signalbase, decode_traces_.size()));
252 decode_traces_.push_back(d);
255 void View::remove_decode_signal(shared_ptr<data::SignalBase> signalbase)
257 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
258 if ((*i)->base() == signalbase) {
259 decode_traces_.erase(i);
271 const View* View::view() const
276 Viewport* View::viewport()
281 const Viewport* View::viewport() const
286 void View::save_settings(QSettings &settings) const
288 settings.setValue("scale", scale_);
289 settings.setValue("v_offset",
290 scrollarea_.verticalScrollBar()->sliderPosition());
292 std::stringstream ss;
293 boost::archive::text_oarchive oa(ss);
294 oa << boost::serialization::make_nvp("offset", offset_);
295 settings.setValue("offset", QString::fromStdString(ss.str()));
297 for (shared_ptr<Signal> signal : signals_) {
298 settings.beginGroup(signal->base()->internal_name());
299 signal->save_settings(settings);
304 void View::restore_settings(QSettings &settings)
306 // Note: It is assumed that this function is only called once,
307 // immediately after restoring a previous session.
309 if (settings.contains("scale"))
310 set_scale(settings.value("scale").toDouble());
312 if (settings.contains("offset")) {
313 util::Timestamp offset;
314 std::stringstream ss;
315 ss << settings.value("offset").toString().toStdString();
317 boost::archive::text_iarchive ia(ss);
318 ia >> boost::serialization::make_nvp("offset", offset);
323 for (shared_ptr<Signal> signal : signals_) {
324 settings.beginGroup(signal->base()->internal_name());
325 signal->restore_settings(settings);
329 if (settings.contains("v_offset")) {
330 saved_v_offset_ = settings.value("v_offset").toInt();
331 set_v_offset(saved_v_offset_);
332 scroll_needs_defaults_ = false;
333 // Note: see resizeEvent() for additional information
337 vector< shared_ptr<TimeItem> > View::time_items() const
339 const vector<shared_ptr<Flag>> f(flags());
340 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
341 items.push_back(cursors_);
342 items.push_back(cursors_->first());
343 items.push_back(cursors_->second());
345 for (auto trigger_marker : trigger_markers_)
346 items.push_back(trigger_marker);
351 double View::scale() const
356 void View::set_scale(double scale)
358 if (scale_ != scale) {
360 Q_EMIT scale_changed();
364 const Timestamp& View::offset() const
369 void View::set_offset(const pv::util::Timestamp& offset)
371 if (offset_ != offset) {
373 Q_EMIT offset_changed();
377 int View::owner_visual_v_offset() const
379 return -scrollarea_.verticalScrollBar()->sliderPosition();
382 void View::set_v_offset(int offset)
384 scrollarea_.verticalScrollBar()->setSliderPosition(offset);
389 unsigned int View::depth() const
394 pv::util::SIPrefix View::tick_prefix() const
399 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
401 if (tick_prefix_ != tick_prefix) {
402 tick_prefix_ = tick_prefix;
403 Q_EMIT tick_prefix_changed();
407 unsigned int View::tick_precision() const
409 return tick_precision_;
412 void View::set_tick_precision(unsigned tick_precision)
414 if (tick_precision_ != tick_precision) {
415 tick_precision_ = tick_precision;
416 Q_EMIT tick_precision_changed();
420 const pv::util::Timestamp& View::tick_period() const
425 void View::set_tick_period(const pv::util::Timestamp& tick_period)
427 if (tick_period_ != tick_period) {
428 tick_period_ = tick_period;
429 Q_EMIT tick_period_changed();
433 TimeUnit View::time_unit() const
438 void View::set_time_unit(pv::util::TimeUnit time_unit)
440 if (time_unit_ != time_unit) {
441 time_unit_ = time_unit;
442 Q_EMIT time_unit_changed();
446 void View::zoom(double steps)
448 zoom(steps, viewport_->width() / 2);
451 void View::zoom(double steps, int offset)
453 set_zoom(scale_ * pow(3.0/2.0, -steps), offset);
456 void View::zoom_fit(bool gui_state)
458 // Act as one-shot when stopped, toggle along with the GUI otherwise
459 if (session_.get_capture_state() == Session::Stopped) {
460 always_zoom_to_fit_ = false;
461 always_zoom_to_fit_changed(false);
463 always_zoom_to_fit_ = gui_state;
464 always_zoom_to_fit_changed(gui_state);
467 const pair<Timestamp, Timestamp> extents = get_time_extents();
468 const Timestamp delta = extents.second - extents.first;
469 if (delta < Timestamp("1e-12"))
473 const int w = viewport_->width();
477 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
478 set_scale_offset(scale.convert_to<double>(), extents.first);
481 void View::zoom_one_to_one()
483 using pv::data::SignalData;
485 // Make a set of all the visible data objects
486 set< shared_ptr<SignalData> > visible_data = get_visible_data();
487 if (visible_data.empty())
491 const int w = viewport_->width();
495 set_zoom(1.0 / session_.get_samplerate(), w / 2);
498 void View::set_scale_offset(double scale, const Timestamp& offset)
500 // Disable sticky scrolling / always zoom to fit when acquisition runs
501 // and user drags the viewport
502 if ((scale_ == scale) && (offset_ != offset) &&
503 (session_.get_capture_state() == Session::Running)) {
505 if (sticky_scrolling_) {
506 sticky_scrolling_ = false;
507 sticky_scrolling_changed(false);
510 if (always_zoom_to_fit_) {
511 always_zoom_to_fit_ = false;
512 always_zoom_to_fit_changed(false);
519 calculate_tick_spacing();
526 set< shared_ptr<SignalData> > View::get_visible_data() const
528 // Make a set of all the visible data objects
529 set< shared_ptr<SignalData> > visible_data;
530 for (const shared_ptr<Signal> sig : signals_)
532 visible_data.insert(sig->data());
537 pair<Timestamp, Timestamp> View::get_time_extents() const
539 boost::optional<Timestamp> left_time, right_time;
540 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
541 for (const shared_ptr<SignalData> d : visible_data) {
542 const vector< shared_ptr<Segment> > segments =
544 for (const shared_ptr<Segment> &s : segments) {
545 double samplerate = s->samplerate();
546 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
548 const Timestamp start_time = s->start_time();
549 left_time = left_time ?
550 min(*left_time, start_time) :
552 right_time = right_time ?
553 max(*right_time, start_time + d->max_sample_count() / samplerate) :
554 start_time + d->max_sample_count() / samplerate;
558 if (!left_time || !right_time)
559 return make_pair(0, 0);
561 assert(*left_time < *right_time);
562 return make_pair(*left_time, *right_time);
565 void View::enable_show_sampling_points(bool state)
572 void View::enable_coloured_bg(bool state)
574 const vector<shared_ptr<TraceTreeItem>> items(
575 list_by_type<TraceTreeItem>());
577 for (shared_ptr<TraceTreeItem> i : items) {
578 // Can't cast to Trace because it's abstract, so we need to
579 // check for any derived classes individually
581 shared_ptr<AnalogSignal> a = dynamic_pointer_cast<AnalogSignal>(i);
583 a->set_coloured_bg(state);
585 shared_ptr<LogicSignal> l = dynamic_pointer_cast<LogicSignal>(i);
587 l->set_coloured_bg(state);
590 shared_ptr<DecodeTrace> d = dynamic_pointer_cast<DecodeTrace>(i);
592 d->set_coloured_bg(state);
599 bool View::cursors_shown() const
601 return show_cursors_;
604 void View::show_cursors(bool show)
606 show_cursors_ = show;
611 void View::centre_cursors()
613 const double time_width = scale_ * viewport_->width();
614 cursors_->first()->set_time(offset_ + time_width * 0.4);
615 cursors_->second()->set_time(offset_ + time_width * 0.6);
620 std::shared_ptr<CursorPair> View::cursors() const
625 void View::add_flag(const Timestamp& time)
627 flags_.push_back(make_shared<Flag>(*this, time,
628 QString("%1").arg(next_flag_text_)));
630 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
631 (next_flag_text_ + 1);
633 time_item_appearance_changed(true, true);
636 void View::remove_flag(std::shared_ptr<Flag> flag)
639 time_item_appearance_changed(true, true);
642 vector< std::shared_ptr<Flag> > View::flags() const
644 vector< std::shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
645 stable_sort(flags.begin(), flags.end(),
646 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
647 return a->time() < b->time();
653 const QPoint& View::hover_point() const
658 void View::restack_all_trace_tree_items()
660 // Make a list of owners that is sorted from deepest first
661 const vector<shared_ptr<TraceTreeItem>> items(
662 list_by_type<TraceTreeItem>());
663 set< TraceTreeItemOwner* > owners;
664 for (const auto &r : items)
665 owners.insert(r->owner());
666 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
667 sort(sorted_owners.begin(), sorted_owners.end(),
668 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
669 return a->depth() > b->depth(); });
671 // Restack the items recursively
672 for (auto &o : sorted_owners)
675 // Re-assign background colors
676 bool next_bgcolour_state = false;
678 for (auto &o : sorted_owners)
679 next_bgcolour_state = o->reassign_bgcolour_states(next_bgcolour_state);
681 // Animate the items to their destination
682 for (const auto &i : items)
683 i->animate_to_layout_v_offset();
686 void View::trigger_event(util::Timestamp location)
688 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
691 void View::get_scroll_layout(double &length, Timestamp &offset) const
693 const pair<Timestamp, Timestamp> extents = get_time_extents();
694 length = ((extents.second - extents.first) / scale_).convert_to<double>();
695 offset = offset_ / scale_;
698 void View::set_zoom(double scale, int offset)
700 // Reset the "always zoom to fit" feature as the user changed the zoom
701 always_zoom_to_fit_ = false;
702 always_zoom_to_fit_changed(false);
704 const Timestamp cursor_offset = offset_ + scale_ * offset;
705 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
706 const Timestamp new_offset = cursor_offset - new_scale * offset;
707 set_scale_offset(new_scale.convert_to<double>(), new_offset);
710 void View::calculate_tick_spacing()
712 const double SpacingIncrement = 10.0f;
713 const double MinValueSpacing = 40.0f;
715 // Figure out the highest numeric value visible on a label
716 const QSize areaSize = viewport_->size();
717 const Timestamp max_time = max(fabs(offset_),
718 fabs(offset_ + scale_ * areaSize.width()));
720 double min_width = SpacingIncrement;
721 double label_width, tick_period_width;
723 QFontMetrics m(QApplication::font());
725 // Copies of the member variables with the same name, used in the calculation
726 // and written back afterwards, so that we don't emit signals all the time
727 // during the calculation.
728 pv::util::Timestamp tick_period = tick_period_;
729 pv::util::SIPrefix tick_prefix = tick_prefix_;
730 unsigned tick_precision = tick_precision_;
733 const double min_period = scale_ * min_width;
735 const int order = (int)floorf(log10f(min_period));
736 const pv::util::Timestamp order_decimal =
737 pow(pv::util::Timestamp(10), order);
739 // Allow for a margin of error so that a scale unit of 1 can be used.
740 // Otherwise, for a SU of 1 the tick period will almost always be below
741 // the min_period by a small amount - and thus skipped in favor of 2.
742 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
743 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
744 double tp_with_margin;
745 unsigned int unit = 0;
748 tp_with_margin = order_decimal.convert_to<double>() *
749 (ScaleUnits[unit++] + tp_margin);
750 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
752 tick_period = order_decimal * ScaleUnits[unit - 1];
753 tick_prefix = static_cast<pv::util::SIPrefix>(
754 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
756 // Precision is the number of fractional digits required, not
757 // taking the prefix into account (and it must never be negative)
758 tick_precision = std::max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
760 tick_period_width = (tick_period / scale_).convert_to<double>();
762 const QString label_text = Ruler::format_time_with_distance(
763 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
765 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
766 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
769 min_width += SpacingIncrement;
770 } while (tick_period_width < label_width);
772 set_tick_period(tick_period);
773 set_tick_prefix(tick_prefix);
774 set_tick_precision(tick_precision);
777 void View::update_scroll()
780 QScrollBar *hscrollbar = scrollarea_.horizontalScrollBar();
781 QScrollBar *vscrollbar = scrollarea_.verticalScrollBar();
783 const QSize areaSize = viewport_->size();
785 // Set the horizontal scroll bar
788 get_scroll_layout(length, offset);
789 length = max(length - areaSize.width(), 0.0);
791 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
793 hscrollbar->setPageStep(areaSize.width() / 2);
794 hscrollbar->setSingleStep(major_tick_distance);
796 updating_scroll_ = true;
798 if (length < MaxScrollValue) {
799 hscrollbar->setRange(0, length);
800 hscrollbar->setSliderPosition(offset.convert_to<double>());
802 hscrollbar->setRange(0, MaxScrollValue);
803 hscrollbar->setSliderPosition(
804 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
807 updating_scroll_ = false;
809 // Set the vertical scrollbar
810 vscrollbar->setPageStep(areaSize.height());
811 vscrollbar->setSingleStep(areaSize.height() / 8);
813 const pair<int, int> extents = v_extents();
815 // Don't change the scrollbar range if there are no traces
816 if (extents.first != extents.second)
817 vscrollbar->setRange(extents.first - areaSize.height(),
820 if (scroll_needs_defaults_)
821 set_scroll_default();
824 void View::reset_scroll()
826 scrollarea_.verticalScrollBar()->setRange(0, 0);
829 void View::set_scroll_default()
833 const QSize areaSize = viewport_->size();
835 const pair<int, int> extents = v_extents();
836 const int trace_height = extents.second - extents.first;
838 // Do all traces fit in the view?
839 if (areaSize.height() >= trace_height)
840 // Center all traces vertically
841 set_v_offset(extents.first -
842 ((areaSize.height() - trace_height) / 2));
844 // Put the first trace at the top, letting the bottom ones overflow
845 set_v_offset(extents.first);
847 // If we're not sure whether setting the defaults worked as
848 // the window wasn't set up entirely yet, we want to be called
849 // again later to make sure
850 scroll_needs_defaults_ = !size_finalized_;
853 void View::update_layout()
855 scrollarea_.setViewportMargins(
856 header_->sizeHint().width() - Header::BaselineOffset,
857 ruler_->sizeHint().height(), 0, 0);
858 ruler_->setGeometry(viewport_->x(), 0,
859 viewport_->width(), ruler_->extended_size_hint().height());
860 header_->setGeometry(0, viewport_->y(),
861 header_->extended_size_hint().width(), viewport_->height());
865 TraceTreeItemOwner* View::find_prevalent_trace_group(
866 const shared_ptr<sigrok::ChannelGroup> &group,
867 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
872 unordered_set<TraceTreeItemOwner*> owners;
873 vector<TraceTreeItemOwner*> owner_list;
875 // Make a set and a list of all the owners
876 for (const auto &channel : group->channels()) {
877 for (auto entry : signal_map) {
878 if (entry.first->channel() == channel) {
879 TraceTreeItemOwner *const o = (entry.second)->owner();
880 owner_list.push_back(o);
886 // Iterate through the list of owners, and find the most prevalent
887 size_t max_prevalence = 0;
888 TraceTreeItemOwner *prevalent_owner = nullptr;
889 for (TraceTreeItemOwner *owner : owners) {
890 const size_t prevalence = std::count_if(
891 owner_list.begin(), owner_list.end(),
892 [&](TraceTreeItemOwner *o) { return o == owner; });
893 if (prevalence > max_prevalence) {
894 max_prevalence = prevalence;
895 prevalent_owner = owner;
899 return prevalent_owner;
902 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
903 const vector< shared_ptr<sigrok::Channel> > &channels,
904 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
906 set< shared_ptr<Trace> > &add_list)
908 vector< shared_ptr<Trace> > filtered_traces;
910 for (const auto &channel : channels) {
911 for (auto entry : signal_map) {
912 if (entry.first->channel() == channel) {
913 shared_ptr<Trace> trace = entry.second;
914 const auto list_iter = add_list.find(trace);
915 if (list_iter == add_list.end())
918 filtered_traces.push_back(trace);
919 add_list.erase(list_iter);
924 return filtered_traces;
927 void View::determine_time_unit()
929 // Check whether we know the sample rate and hence can use time as the unit
930 if (time_unit_ == util::TimeUnit::Samples) {
931 // Check all signals but...
932 for (const shared_ptr<Signal> signal : signals_) {
933 const shared_ptr<SignalData> data = signal->data();
935 // ...only check first segment of each
936 const vector< shared_ptr<Segment> > segments = data->segments();
937 if (!segments.empty())
938 if (segments[0]->samplerate()) {
939 set_time_unit(util::TimeUnit::Time);
946 bool View::eventFilter(QObject *object, QEvent *event)
948 const QEvent::Type type = event->type();
949 if (type == QEvent::MouseMove) {
951 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
952 if (object == viewport_)
953 hover_point_ = mouse_event->pos();
954 else if (object == ruler_)
955 hover_point_ = QPoint(mouse_event->x(), 0);
956 else if (object == header_)
957 hover_point_ = QPoint(0, mouse_event->y());
959 hover_point_ = QPoint(-1, -1);
961 hover_point_changed();
963 } else if (type == QEvent::Leave) {
964 hover_point_ = QPoint(-1, -1);
965 hover_point_changed();
968 return QObject::eventFilter(object, event);
971 void View::resizeEvent(QResizeEvent*)
975 // This is somewhat of a hack, unfortunately. We cannot use
976 // set_v_offset() from within restore_settings() as the view
977 // at that point is neither visible nor properly sized.
978 // This is the least intrusive workaround I could come up
979 // with: set the vertical offset (or scroll defaults) when
980 // the view is visible and resized to its final size.
981 // Resize events that are sent when the view is not visible
982 // must be ignored as they have wrong sizes, potentially
983 // preventing the v offset from being set successfully.
986 size_finalized_ = true;
988 if (size_finalized_ && saved_v_offset_) {
989 set_v_offset(saved_v_offset_);
993 if (size_finalized_ && scroll_needs_defaults_)
994 set_scroll_default();
997 void View::row_item_appearance_changed(bool label, bool content)
1002 viewport_->update();
1005 void View::time_item_appearance_changed(bool label, bool content)
1010 viewport_->update();
1013 void View::extents_changed(bool horz, bool vert)
1016 (horz ? TraceTreeItemHExtentsChanged : 0) |
1017 (vert ? TraceTreeItemVExtentsChanged : 0);
1018 lazy_event_handler_.start();
1021 void View::h_scroll_value_changed(int value)
1023 if (updating_scroll_)
1026 // Disable sticky scrolling when user moves the horizontal scroll bar
1027 // during a running acquisition
1028 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1029 sticky_scrolling_ = false;
1030 sticky_scrolling_changed(false);
1033 const int range = scrollarea_.horizontalScrollBar()->maximum();
1034 if (range < MaxScrollValue)
1035 set_offset(scale_ * value);
1039 get_scroll_layout(length, offset);
1040 set_offset(scale_ * length * value / MaxScrollValue);
1044 viewport_->update();
1047 void View::v_scroll_value_changed()
1050 viewport_->update();
1053 void View::signals_changed()
1055 using sigrok::Channel;
1057 vector< shared_ptr<Channel> > channels;
1058 shared_ptr<sigrok::Device> sr_dev;
1060 // Do we need to set the vertical scrollbar to its default position later?
1061 // We do if there are no traces, i.e. the scroll bar has no range set
1062 bool reset_scrollbar =
1063 (scrollarea_.verticalScrollBar()->minimum() ==
1064 scrollarea_.verticalScrollBar()->maximum());
1066 if (!session_.device()) {
1070 sr_dev = session_.device()->device();
1072 channels = sr_dev->channels();
1075 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1077 // Make a list of traces that are being added, and a list of traces
1078 // that are being removed
1079 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1080 const set<shared_ptr<Trace>> prev_traces(
1081 prev_trace_list.begin(), prev_trace_list.end());
1083 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1085 #ifdef ENABLE_DECODE
1086 traces.insert(decode_traces_.begin(), decode_traces_.end());
1089 set< shared_ptr<Trace> > add_traces;
1090 set_difference(traces.begin(), traces.end(),
1091 prev_traces.begin(), prev_traces.end(),
1092 inserter(add_traces, add_traces.begin()));
1094 set< shared_ptr<Trace> > remove_traces;
1095 set_difference(prev_traces.begin(), prev_traces.end(),
1096 traces.begin(), traces.end(),
1097 inserter(remove_traces, remove_traces.begin()));
1099 // Make a look-up table of sigrok Channels to pulseview Signals
1100 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1102 for (const shared_ptr<Signal> &sig : signals_)
1103 signal_map[sig->base()] = sig;
1105 // Populate channel groups
1107 for (auto entry : sr_dev->channel_groups()) {
1108 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1110 if (group->channels().size() <= 1)
1113 // Find best trace group to add to
1114 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1117 // If there is no trace group, create one
1118 shared_ptr<TraceGroup> new_trace_group;
1120 new_trace_group.reset(new TraceGroup());
1121 owner = new_trace_group.get();
1124 // Extract traces for the trace group, removing them from
1126 const vector< shared_ptr<Trace> > new_traces_in_group =
1127 extract_new_traces_for_channels(group->channels(),
1128 signal_map, add_traces);
1130 // Add the traces to the group
1131 const pair<int, int> prev_v_extents = owner->v_extents();
1132 int offset = prev_v_extents.second - prev_v_extents.first;
1133 for (shared_ptr<Trace> trace : new_traces_in_group) {
1135 owner->add_child_item(trace);
1137 const pair<int, int> extents = trace->v_extents();
1138 if (trace->enabled())
1139 offset += -extents.first;
1140 trace->force_to_v_offset(offset);
1141 if (trace->enabled())
1142 offset += extents.second;
1145 if (new_trace_group) {
1146 // Assign proper vertical offsets to each channel in the group
1147 new_trace_group->restack_items();
1149 // If this is a new group, enqueue it in the new top level
1151 if (!new_traces_in_group.empty())
1152 new_top_level_items.push_back(new_trace_group);
1156 // Enqueue the remaining logic channels in a group
1157 vector< shared_ptr<Channel> > logic_channels;
1158 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1159 [](const shared_ptr<Channel>& c) {
1160 return c->type() == sigrok::ChannelType::LOGIC; });
1162 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1163 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1165 if (non_grouped_logic_signals.size() > 0) {
1166 const shared_ptr<TraceGroup> non_grouped_trace_group(
1167 make_shared<TraceGroup>());
1168 for (shared_ptr<Trace> trace : non_grouped_logic_signals)
1169 non_grouped_trace_group->add_child_item(trace);
1171 non_grouped_trace_group->restack_items();
1172 new_top_level_items.push_back(non_grouped_trace_group);
1175 // Enqueue the remaining channels as free ungrouped traces
1176 const vector< shared_ptr<Trace> > new_top_level_signals =
1177 extract_new_traces_for_channels(channels, signal_map, add_traces);
1178 new_top_level_items.insert(new_top_level_items.end(),
1179 new_top_level_signals.begin(), new_top_level_signals.end());
1181 // Enqueue any remaining traces i.e. decode traces
1182 new_top_level_items.insert(new_top_level_items.end(),
1183 add_traces.begin(), add_traces.end());
1185 // Remove any removed traces
1186 for (shared_ptr<Trace> trace : remove_traces) {
1187 TraceTreeItemOwner *const owner = trace->owner();
1189 owner->remove_child_item(trace);
1192 // Remove any empty trace groups
1193 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1194 if (group->child_items().size() == 0) {
1195 remove_child_item(group);
1199 // Add and position the pending top levels items
1200 int offset = v_extents().second;
1201 for (auto item : new_top_level_items) {
1202 add_child_item(item);
1204 // Position the item after the last item or at the top if there is none
1205 const pair<int, int> extents = item->v_extents();
1207 if (item->enabled())
1208 offset += -extents.first;
1210 item->force_to_v_offset(offset);
1212 if (item->enabled())
1213 offset += extents.second;
1219 viewport_->update();
1221 if (reset_scrollbar)
1222 set_scroll_default();
1225 void View::capture_state_updated(int state)
1227 if (state == Session::Running) {
1228 set_time_unit(util::TimeUnit::Samples);
1230 trigger_markers_.clear();
1232 // Activate "always zoom to fit" if the setting is enabled and we're
1233 // the main view of this session (other trace views may be used for
1234 // zooming and we don't want to mess them up)
1235 GlobalSettings settings;
1236 bool state = settings.value(GlobalSettings::Key_View_AlwaysZoomToFit).toBool();
1237 if (is_main_view_ && state) {
1238 always_zoom_to_fit_ = true;
1239 always_zoom_to_fit_changed(always_zoom_to_fit_);
1242 // Enable sticky scrolling if the setting is enabled
1243 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
1246 if (state == Session::Stopped) {
1247 // After acquisition has stopped we need to re-calculate the ticks once
1248 // as it's otherwise done when the user pans or zooms, which is too late
1249 calculate_tick_spacing();
1251 // Reset "always zoom to fit", the acquisition has stopped
1252 if (always_zoom_to_fit_) {
1253 // Perform a final zoom-to-fit before disabling
1254 zoom_fit(always_zoom_to_fit_);
1255 always_zoom_to_fit_ = false;
1256 always_zoom_to_fit_changed(always_zoom_to_fit_);
1261 void View::data_updated()
1263 if (always_zoom_to_fit_ || sticky_scrolling_) {
1264 if (!delayed_view_updater_.isActive())
1265 delayed_view_updater_.start();
1267 determine_time_unit();
1270 viewport_->update();
1274 void View::perform_delayed_view_update()
1276 if (always_zoom_to_fit_) {
1278 } else if (sticky_scrolling_) {
1279 // Make right side of the view sticky
1282 get_scroll_layout(length, offset);
1284 const QSize areaSize = viewport_->size();
1285 length = max(length - areaSize.width(), 0.0);
1287 set_offset(scale_ * length);
1290 determine_time_unit();
1293 viewport_->update();
1296 void View::process_sticky_events()
1298 if (sticky_events_ & TraceTreeItemHExtentsChanged)
1300 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
1301 restack_all_trace_tree_items();
1305 // Clear the sticky events
1309 void View::on_hover_point_changed()
1311 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1312 list_by_type<TraceTreeItem>());
1313 for (shared_ptr<TraceTreeItem> r : trace_tree_items)
1314 r->hover_point_changed();
1317 } // namespace TraceView
1318 } // namespace views