2 * This file is part of the PulseView project.
4 * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
21 #include <libsigrokdecode/libsigrokdecode.h>
32 #include <unordered_set>
34 #include <boost/archive/text_iarchive.hpp>
35 #include <boost/archive/text_oarchive.hpp>
36 #include <boost/serialization/serialization.hpp>
38 #include <QApplication>
40 #include <QFontMetrics>
41 #include <QHBoxLayout>
42 #include <QMouseEvent>
45 #include <libsigrokcxx/libsigrokcxx.hpp>
47 #include "analogsignal.hpp"
49 #include "logicsignal.hpp"
52 #include "tracegroup.hpp"
53 #include "triggermarker.hpp"
55 #include "viewport.hpp"
57 #include "pv/data/logic.hpp"
58 #include "pv/data/logicsegment.hpp"
59 #include "pv/devices/device.hpp"
60 #include "pv/globalsettings.hpp"
61 #include "pv/session.hpp"
62 #include "pv/util.hpp"
65 #include "decodetrace.hpp"
68 using pv::data::SignalData;
69 using pv::data::Segment;
70 using pv::util::TimeUnit;
71 using pv::util::Timestamp;
73 using std::back_inserter;
76 using std::dynamic_pointer_cast;
80 using std::make_shared;
84 using std::set_difference;
85 using std::shared_ptr;
86 using std::stringstream;
87 using std::unordered_map;
88 using std::unordered_set;
95 const Timestamp View::MaxScale("1e9");
96 const Timestamp View::MinScale("1e-12");
98 const int View::MaxScrollValue = INT_MAX / 2;
100 const int View::ScaleUnits[3] = {1, 2, 5};
103 CustomAbstractScrollArea::CustomAbstractScrollArea(QWidget *parent) :
104 QAbstractScrollArea(parent)
108 void CustomAbstractScrollArea::setViewportMargins(int left, int top, int right, int bottom)
110 QAbstractScrollArea::setViewportMargins(left, top, right, bottom);
113 bool CustomAbstractScrollArea::viewportEvent(QEvent *event)
115 switch (event->type()) {
117 case QEvent::MouseButtonPress:
118 case QEvent::MouseButtonRelease:
119 case QEvent::MouseButtonDblClick:
120 case QEvent::MouseMove:
122 case QEvent::TouchBegin:
123 case QEvent::TouchUpdate:
124 case QEvent::TouchEnd:
127 return QAbstractScrollArea::viewportEvent(event);
131 View::View(Session &session, bool is_main_view, QWidget *parent) :
132 ViewBase(session, is_main_view, parent),
133 viewport_(new Viewport(*this)),
134 ruler_(new Ruler(*this)),
135 header_(new Header(*this)),
139 updating_scroll_(false),
140 sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui()
141 always_zoom_to_fit_(false),
143 tick_prefix_(pv::util::SIPrefix::yocto),
145 time_unit_(util::TimeUnit::Time),
146 show_cursors_(false),
147 cursors_(new CursorPair(*this)),
148 next_flag_text_('A'),
150 hover_point_(-1, -1),
151 scroll_needs_defaults_(false),
154 GlobalSettings settings;
155 coloured_bg_ = settings.value(GlobalSettings::Key_View_ColouredBG).toBool();
157 connect(scrollarea_.horizontalScrollBar(), SIGNAL(valueChanged(int)),
158 this, SLOT(h_scroll_value_changed(int)));
159 connect(scrollarea_.verticalScrollBar(), SIGNAL(valueChanged(int)),
160 this, SLOT(v_scroll_value_changed()));
162 connect(header_, SIGNAL(selection_changed()),
163 ruler_, SLOT(clear_selection()));
164 connect(ruler_, SIGNAL(selection_changed()),
165 header_, SLOT(clear_selection()));
167 connect(header_, SIGNAL(selection_changed()),
168 this, SIGNAL(selection_changed()));
169 connect(ruler_, SIGNAL(selection_changed()),
170 this, SIGNAL(selection_changed()));
172 connect(this, SIGNAL(hover_point_changed()),
173 this, SLOT(on_hover_point_changed()));
175 connect(&lazy_event_handler_, SIGNAL(timeout()),
176 this, SLOT(process_sticky_events()));
177 lazy_event_handler_.setSingleShot(true);
179 /* To let the scroll area fill up the parent QWidget (this), we need a layout */
180 QHBoxLayout *layout = new QHBoxLayout(this);
182 layout->setContentsMargins(0, 0, 0, 0);
183 layout->addWidget(&scrollarea_);
185 scrollarea_.setViewport(viewport_);
187 viewport_->installEventFilter(this);
188 ruler_->installEventFilter(this);
189 header_->installEventFilter(this);
191 // Trigger the initial event manually. The default device has signals
192 // which were created before this object came into being
195 // make sure the transparent widgets are on the top
199 // Update the zoom state
200 calculate_tick_spacing();
203 Session& View::session()
208 const Session& View::session() const
213 unordered_set< shared_ptr<Signal> > View::signals() const
218 void View::clear_signals()
220 ViewBase::clear_signalbases();
224 void View::add_signal(const shared_ptr<Signal> signal)
226 ViewBase::add_signalbase(signal->base());
227 signals_.insert(signal);
231 void View::clear_decode_signals()
233 decode_traces_.clear();
236 void View::add_decode_signal(shared_ptr<data::SignalBase> signalbase)
238 shared_ptr<DecodeTrace> d(
239 new DecodeTrace(session_, signalbase, decode_traces_.size()));
240 decode_traces_.push_back(d);
243 void View::remove_decode_signal(shared_ptr<data::SignalBase> signalbase)
245 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
246 if ((*i)->base() == signalbase) {
247 decode_traces_.erase(i);
259 const View* View::view() const
264 Viewport* View::viewport()
269 const Viewport* View::viewport() const
274 void View::save_settings(QSettings &settings) const
276 settings.setValue("scale", scale_);
277 settings.setValue("v_offset",
278 scrollarea_.verticalScrollBar()->sliderPosition());
281 boost::archive::text_oarchive oa(ss);
282 oa << boost::serialization::make_nvp("offset", offset_);
283 settings.setValue("offset", QString::fromStdString(ss.str()));
285 for (shared_ptr<Signal> signal : signals_) {
286 settings.beginGroup(signal->base()->internal_name());
287 signal->save_settings(settings);
292 void View::restore_settings(QSettings &settings)
294 // Note: It is assumed that this function is only called once,
295 // immediately after restoring a previous session.
297 if (settings.contains("scale"))
298 set_scale(settings.value("scale").toDouble());
300 if (settings.contains("offset")) {
301 util::Timestamp offset;
303 ss << settings.value("offset").toString().toStdString();
305 boost::archive::text_iarchive ia(ss);
306 ia >> boost::serialization::make_nvp("offset", offset);
311 for (shared_ptr<Signal> signal : signals_) {
312 settings.beginGroup(signal->base()->internal_name());
313 signal->restore_settings(settings);
317 if (settings.contains("v_offset")) {
318 saved_v_offset_ = settings.value("v_offset").toInt();
319 set_v_offset(saved_v_offset_);
320 scroll_needs_defaults_ = false;
321 // Note: see eventFilter() for additional information
325 vector< shared_ptr<TimeItem> > View::time_items() const
327 const vector<shared_ptr<Flag>> f(flags());
328 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
329 items.push_back(cursors_);
330 items.push_back(cursors_->first());
331 items.push_back(cursors_->second());
333 for (auto trigger_marker : trigger_markers_)
334 items.push_back(trigger_marker);
339 double View::scale() const
344 void View::set_scale(double scale)
346 if (scale_ != scale) {
348 Q_EMIT scale_changed();
352 const Timestamp& View::offset() const
357 void View::set_offset(const pv::util::Timestamp& offset)
359 if (offset_ != offset) {
361 Q_EMIT offset_changed();
365 int View::owner_visual_v_offset() const
367 return -scrollarea_.verticalScrollBar()->sliderPosition();
370 void View::set_v_offset(int offset)
372 scrollarea_.verticalScrollBar()->setSliderPosition(offset);
377 unsigned int View::depth() const
382 pv::util::SIPrefix View::tick_prefix() const
387 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
389 if (tick_prefix_ != tick_prefix) {
390 tick_prefix_ = tick_prefix;
391 Q_EMIT tick_prefix_changed();
395 unsigned int View::tick_precision() const
397 return tick_precision_;
400 void View::set_tick_precision(unsigned tick_precision)
402 if (tick_precision_ != tick_precision) {
403 tick_precision_ = tick_precision;
404 Q_EMIT tick_precision_changed();
408 const pv::util::Timestamp& View::tick_period() const
413 void View::set_tick_period(const pv::util::Timestamp& tick_period)
415 if (tick_period_ != tick_period) {
416 tick_period_ = tick_period;
417 Q_EMIT tick_period_changed();
421 TimeUnit View::time_unit() const
426 void View::set_time_unit(pv::util::TimeUnit time_unit)
428 if (time_unit_ != time_unit) {
429 time_unit_ = time_unit;
430 Q_EMIT time_unit_changed();
434 void View::zoom(double steps)
436 zoom(steps, viewport_->width() / 2);
439 void View::zoom(double steps, int offset)
441 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
444 void View::zoom_fit(bool gui_state)
446 // Act as one-shot when stopped, toggle along with the GUI otherwise
447 if (session_.get_capture_state() == Session::Stopped) {
448 always_zoom_to_fit_ = false;
449 always_zoom_to_fit_changed(false);
451 always_zoom_to_fit_ = gui_state;
452 always_zoom_to_fit_changed(gui_state);
455 const pair<Timestamp, Timestamp> extents = get_time_extents();
456 const Timestamp delta = extents.second - extents.first;
457 if (delta < Timestamp("1e-12"))
461 const int w = viewport_->width();
465 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
466 set_scale_offset(scale.convert_to<double>(), extents.first);
469 void View::zoom_one_to_one()
471 using pv::data::SignalData;
473 // Make a set of all the visible data objects
474 set< shared_ptr<SignalData> > visible_data = get_visible_data();
475 if (visible_data.empty())
479 const int w = viewport_->width();
483 set_zoom(1.0 / session_.get_samplerate(), w / 2);
486 void View::set_scale_offset(double scale, const Timestamp& offset)
488 // Disable sticky scrolling / always zoom to fit when acquisition runs
489 // and user drags the viewport
490 if ((scale_ == scale) && (offset_ != offset) &&
491 (session_.get_capture_state() == Session::Running)) {
493 if (sticky_scrolling_) {
494 sticky_scrolling_ = false;
495 sticky_scrolling_changed(false);
498 if (always_zoom_to_fit_) {
499 always_zoom_to_fit_ = false;
500 always_zoom_to_fit_changed(false);
507 calculate_tick_spacing();
514 set< shared_ptr<SignalData> > View::get_visible_data() const
516 // Make a set of all the visible data objects
517 set< shared_ptr<SignalData> > visible_data;
518 for (const shared_ptr<Signal> sig : signals_)
520 visible_data.insert(sig->data());
525 pair<Timestamp, Timestamp> View::get_time_extents() const
527 boost::optional<Timestamp> left_time, right_time;
528 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
529 for (const shared_ptr<SignalData> d : visible_data) {
530 const vector< shared_ptr<Segment> > segments = d->segments();
531 for (const shared_ptr<Segment> &s : segments) {
532 double samplerate = s->samplerate();
533 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
535 const Timestamp start_time = s->start_time();
536 left_time = left_time ?
537 min(*left_time, start_time) :
539 right_time = right_time ?
540 max(*right_time, start_time + d->max_sample_count() / samplerate) :
541 start_time + d->max_sample_count() / samplerate;
545 if (!left_time || !right_time)
546 return make_pair(0, 0);
548 assert(*left_time < *right_time);
549 return make_pair(*left_time, *right_time);
552 void View::enable_show_sampling_points(bool state)
559 void View::enable_show_analog_minor_grid(bool state)
566 void View::enable_coloured_bg(bool state)
568 coloured_bg_ = state;
572 bool View::coloured_bg() const
577 bool View::cursors_shown() const
579 return show_cursors_;
582 void View::show_cursors(bool show)
584 show_cursors_ = show;
589 void View::centre_cursors()
591 const double time_width = scale_ * viewport_->width();
592 cursors_->first()->set_time(offset_ + time_width * 0.4);
593 cursors_->second()->set_time(offset_ + time_width * 0.6);
598 shared_ptr<CursorPair> View::cursors() const
603 void View::add_flag(const Timestamp& time)
605 flags_.push_back(make_shared<Flag>(*this, time,
606 QString("%1").arg(next_flag_text_)));
608 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
609 (next_flag_text_ + 1);
611 time_item_appearance_changed(true, true);
614 void View::remove_flag(shared_ptr<Flag> flag)
617 time_item_appearance_changed(true, true);
620 vector< shared_ptr<Flag> > View::flags() const
622 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
623 stable_sort(flags.begin(), flags.end(),
624 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
625 return a->time() < b->time();
631 const QPoint& View::hover_point() const
636 void View::restack_all_trace_tree_items()
638 // Make a list of owners that is sorted from deepest first
639 const vector<shared_ptr<TraceTreeItem>> items(
640 list_by_type<TraceTreeItem>());
641 set< TraceTreeItemOwner* > owners;
642 for (const auto &r : items)
643 owners.insert(r->owner());
644 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
645 sort(sorted_owners.begin(), sorted_owners.end(),
646 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
647 return a->depth() > b->depth(); });
649 // Restack the items recursively
650 for (auto &o : sorted_owners)
653 // Animate the items to their destination
654 for (const auto &i : items)
655 i->animate_to_layout_v_offset();
658 void View::trigger_event(util::Timestamp location)
660 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
663 void View::get_scroll_layout(double &length, Timestamp &offset) const
665 const pair<Timestamp, Timestamp> extents = get_time_extents();
666 length = ((extents.second - extents.first) / scale_).convert_to<double>();
667 offset = offset_ / scale_;
670 void View::set_zoom(double scale, int offset)
672 // Reset the "always zoom to fit" feature as the user changed the zoom
673 always_zoom_to_fit_ = false;
674 always_zoom_to_fit_changed(false);
676 const Timestamp cursor_offset = offset_ + scale_ * offset;
677 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
678 const Timestamp new_offset = cursor_offset - new_scale * offset;
679 set_scale_offset(new_scale.convert_to<double>(), new_offset);
682 void View::calculate_tick_spacing()
684 const double SpacingIncrement = 10.0f;
685 const double MinValueSpacing = 40.0f;
687 // Figure out the highest numeric value visible on a label
688 const QSize areaSize = viewport_->size();
689 const Timestamp max_time = max(fabs(offset_),
690 fabs(offset_ + scale_ * areaSize.width()));
692 double min_width = SpacingIncrement;
693 double label_width, tick_period_width;
695 QFontMetrics m(QApplication::font());
697 // Copies of the member variables with the same name, used in the calculation
698 // and written back afterwards, so that we don't emit signals all the time
699 // during the calculation.
700 pv::util::Timestamp tick_period = tick_period_;
701 pv::util::SIPrefix tick_prefix = tick_prefix_;
702 unsigned tick_precision = tick_precision_;
705 const double min_period = scale_ * min_width;
707 const int order = (int)floorf(log10f(min_period));
708 const pv::util::Timestamp order_decimal =
709 pow(pv::util::Timestamp(10), order);
711 // Allow for a margin of error so that a scale unit of 1 can be used.
712 // Otherwise, for a SU of 1 the tick period will almost always be below
713 // the min_period by a small amount - and thus skipped in favor of 2.
714 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
715 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
716 double tp_with_margin;
717 unsigned int unit = 0;
720 tp_with_margin = order_decimal.convert_to<double>() *
721 (ScaleUnits[unit++] + tp_margin);
722 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
724 tick_period = order_decimal * ScaleUnits[unit - 1];
725 tick_prefix = static_cast<pv::util::SIPrefix>(
726 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
728 // Precision is the number of fractional digits required, not
729 // taking the prefix into account (and it must never be negative)
730 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
732 tick_period_width = (tick_period / scale_).convert_to<double>();
734 const QString label_text = Ruler::format_time_with_distance(
735 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
737 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
738 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
741 min_width += SpacingIncrement;
742 } while (tick_period_width < label_width);
744 set_tick_period(tick_period);
745 set_tick_prefix(tick_prefix);
746 set_tick_precision(tick_precision);
749 void View::adjust_top_margin()
753 const QSize areaSize = viewport_->size();
755 const pair<int, int> extents = v_extents();
756 const int top_margin = owner_visual_v_offset() + extents.first;
757 const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second;
759 // Do we have empty space at the top while the last trace goes out of screen?
760 if ((top_margin > 0) && (trace_bottom > areaSize.height())) {
761 const int trace_height = extents.second - extents.first;
763 // Center everything vertically if there is enough space
764 if (areaSize.height() >= trace_height)
765 set_v_offset(extents.first -
766 ((areaSize.height() - trace_height) / 2));
768 // Remove the top margin to make as many traces fit on screen as possible
769 set_v_offset(extents.first);
773 void View::update_scroll()
776 QScrollBar *hscrollbar = scrollarea_.horizontalScrollBar();
777 QScrollBar *vscrollbar = scrollarea_.verticalScrollBar();
779 const QSize areaSize = viewport_->size();
781 // Set the horizontal scroll bar
784 get_scroll_layout(length, offset);
785 length = max(length - areaSize.width(), 0.0);
787 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
789 hscrollbar->setPageStep(areaSize.width() / 2);
790 hscrollbar->setSingleStep(major_tick_distance);
792 updating_scroll_ = true;
794 if (length < MaxScrollValue) {
795 hscrollbar->setRange(0, length);
796 hscrollbar->setSliderPosition(offset.convert_to<double>());
798 hscrollbar->setRange(0, MaxScrollValue);
799 hscrollbar->setSliderPosition(
800 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
803 updating_scroll_ = false;
805 // Set the vertical scrollbar
806 vscrollbar->setPageStep(areaSize.height());
807 vscrollbar->setSingleStep(areaSize.height() / 8);
809 const pair<int, int> extents = v_extents();
811 // Don't change the scrollbar range if there are no traces
812 if (extents.first != extents.second)
813 vscrollbar->setRange(extents.first - areaSize.height(),
816 if (scroll_needs_defaults_)
817 set_scroll_default();
820 void View::reset_scroll()
822 scrollarea_.verticalScrollBar()->setRange(0, 0);
825 void View::set_scroll_default()
829 const QSize areaSize = viewport_->size();
831 const pair<int, int> extents = v_extents();
832 const int trace_height = extents.second - extents.first;
834 // Do all traces fit in the view?
835 if (areaSize.height() >= trace_height)
836 // Center all traces vertically
837 set_v_offset(extents.first -
838 ((areaSize.height() - trace_height) / 2));
840 // Put the first trace at the top, letting the bottom ones overflow
841 set_v_offset(extents.first);
844 void View::update_layout()
846 scrollarea_.setViewportMargins(
847 header_->sizeHint().width() - Header::BaselineOffset,
848 ruler_->sizeHint().height(), 0, 0);
849 ruler_->setGeometry(viewport_->x(), 0,
850 viewport_->width(), ruler_->extended_size_hint().height());
851 header_->setGeometry(0, viewport_->y(),
852 header_->extended_size_hint().width(), viewport_->height());
856 TraceTreeItemOwner* View::find_prevalent_trace_group(
857 const shared_ptr<sigrok::ChannelGroup> &group,
858 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
863 unordered_set<TraceTreeItemOwner*> owners;
864 vector<TraceTreeItemOwner*> owner_list;
866 // Make a set and a list of all the owners
867 for (const auto &channel : group->channels()) {
868 for (auto entry : signal_map) {
869 if (entry.first->channel() == channel) {
870 TraceTreeItemOwner *const o = (entry.second)->owner();
871 owner_list.push_back(o);
877 // Iterate through the list of owners, and find the most prevalent
878 size_t max_prevalence = 0;
879 TraceTreeItemOwner *prevalent_owner = nullptr;
880 for (TraceTreeItemOwner *owner : owners) {
881 const size_t prevalence = count_if(
882 owner_list.begin(), owner_list.end(),
883 [&](TraceTreeItemOwner *o) { return o == owner; });
884 if (prevalence > max_prevalence) {
885 max_prevalence = prevalence;
886 prevalent_owner = owner;
890 return prevalent_owner;
893 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
894 const vector< shared_ptr<sigrok::Channel> > &channels,
895 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
897 set< shared_ptr<Trace> > &add_list)
899 vector< shared_ptr<Trace> > filtered_traces;
901 for (const auto &channel : channels) {
902 for (auto entry : signal_map) {
903 if (entry.first->channel() == channel) {
904 shared_ptr<Trace> trace = entry.second;
905 const auto list_iter = add_list.find(trace);
906 if (list_iter == add_list.end())
909 filtered_traces.push_back(trace);
910 add_list.erase(list_iter);
915 return filtered_traces;
918 void View::determine_time_unit()
920 // Check whether we know the sample rate and hence can use time as the unit
921 if (time_unit_ == util::TimeUnit::Samples) {
922 // Check all signals but...
923 for (const shared_ptr<Signal> signal : signals_) {
924 const shared_ptr<SignalData> data = signal->data();
926 // ...only check first segment of each
927 const vector< shared_ptr<Segment> > segments = data->segments();
928 if (!segments.empty())
929 if (segments[0]->samplerate()) {
930 set_time_unit(util::TimeUnit::Time);
937 bool View::eventFilter(QObject *object, QEvent *event)
939 const QEvent::Type type = event->type();
940 if (type == QEvent::MouseMove) {
942 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
943 if (object == viewport_)
944 hover_point_ = mouse_event->pos();
945 else if (object == ruler_)
946 hover_point_ = QPoint(mouse_event->x(), 0);
947 else if (object == header_)
948 hover_point_ = QPoint(0, mouse_event->y());
950 hover_point_ = QPoint(-1, -1);
952 hover_point_changed();
954 } else if (type == QEvent::Leave) {
955 hover_point_ = QPoint(-1, -1);
956 hover_point_changed();
957 } else if (type == QEvent::Show) {
959 // This is somewhat of a hack, unfortunately. We cannot use
960 // set_v_offset() from within restore_settings() as the view
961 // at that point is neither visible nor properly sized.
962 // This is the least intrusive workaround I could come up
963 // with: set the vertical offset (or scroll defaults) when
964 // the view is shown, which happens after all widgets were
965 // resized to their final sizes.
968 if (scroll_needs_defaults_) {
969 set_scroll_default();
970 scroll_needs_defaults_ = false;
973 if (saved_v_offset_) {
974 set_v_offset(saved_v_offset_);
979 return QObject::eventFilter(object, event);
982 void View::resizeEvent(QResizeEvent* event)
984 // Only adjust the top margin if we shrunk vertically
985 if (event->size().height() < event->oldSize().height())
991 void View::row_item_appearance_changed(bool label, bool content)
999 void View::time_item_appearance_changed(bool label, bool content)
1004 viewport_->update();
1007 void View::extents_changed(bool horz, bool vert)
1010 (horz ? TraceTreeItemHExtentsChanged : 0) |
1011 (vert ? TraceTreeItemVExtentsChanged : 0);
1013 lazy_event_handler_.start();
1016 void View::h_scroll_value_changed(int value)
1018 if (updating_scroll_)
1021 // Disable sticky scrolling when user moves the horizontal scroll bar
1022 // during a running acquisition
1023 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1024 sticky_scrolling_ = false;
1025 sticky_scrolling_changed(false);
1028 const int range = scrollarea_.horizontalScrollBar()->maximum();
1029 if (range < MaxScrollValue)
1030 set_offset(scale_ * value);
1034 get_scroll_layout(length, offset);
1035 set_offset(scale_ * length * value / MaxScrollValue);
1039 viewport_->update();
1042 void View::v_scroll_value_changed()
1045 viewport_->update();
1048 void View::signals_changed()
1050 using sigrok::Channel;
1052 vector< shared_ptr<Channel> > channels;
1053 shared_ptr<sigrok::Device> sr_dev;
1055 // Do we need to set the vertical scrollbar to its default position later?
1056 // We do if there are no traces, i.e. the scroll bar has no range set
1057 bool reset_scrollbar =
1058 (scrollarea_.verticalScrollBar()->minimum() ==
1059 scrollarea_.verticalScrollBar()->maximum());
1061 if (!session_.device()) {
1065 sr_dev = session_.device()->device();
1067 channels = sr_dev->channels();
1070 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1072 // Make a list of traces that are being added, and a list of traces
1073 // that are being removed
1074 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1075 const set<shared_ptr<Trace>> prev_traces(
1076 prev_trace_list.begin(), prev_trace_list.end());
1078 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1080 #ifdef ENABLE_DECODE
1081 traces.insert(decode_traces_.begin(), decode_traces_.end());
1084 set< shared_ptr<Trace> > add_traces;
1085 set_difference(traces.begin(), traces.end(),
1086 prev_traces.begin(), prev_traces.end(),
1087 inserter(add_traces, add_traces.begin()));
1089 set< shared_ptr<Trace> > remove_traces;
1090 set_difference(prev_traces.begin(), prev_traces.end(),
1091 traces.begin(), traces.end(),
1092 inserter(remove_traces, remove_traces.begin()));
1094 // Make a look-up table of sigrok Channels to pulseview Signals
1095 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1097 for (const shared_ptr<Signal> &sig : signals_)
1098 signal_map[sig->base()] = sig;
1100 // Populate channel groups
1102 for (auto entry : sr_dev->channel_groups()) {
1103 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1105 if (group->channels().size() <= 1)
1108 // Find best trace group to add to
1109 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1112 // If there is no trace group, create one
1113 shared_ptr<TraceGroup> new_trace_group;
1115 new_trace_group.reset(new TraceGroup());
1116 owner = new_trace_group.get();
1119 // Extract traces for the trace group, removing them from
1121 const vector< shared_ptr<Trace> > new_traces_in_group =
1122 extract_new_traces_for_channels(group->channels(),
1123 signal_map, add_traces);
1125 // Add the traces to the group
1126 const pair<int, int> prev_v_extents = owner->v_extents();
1127 int offset = prev_v_extents.second - prev_v_extents.first;
1128 for (shared_ptr<Trace> trace : new_traces_in_group) {
1130 owner->add_child_item(trace);
1132 const pair<int, int> extents = trace->v_extents();
1133 if (trace->enabled())
1134 offset += -extents.first;
1135 trace->force_to_v_offset(offset);
1136 if (trace->enabled())
1137 offset += extents.second;
1140 if (new_trace_group) {
1141 // Assign proper vertical offsets to each channel in the group
1142 new_trace_group->restack_items();
1144 // If this is a new group, enqueue it in the new top level
1146 if (!new_traces_in_group.empty())
1147 new_top_level_items.push_back(new_trace_group);
1151 // Enqueue the remaining logic channels in a group
1152 vector< shared_ptr<Channel> > logic_channels;
1153 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1154 [](const shared_ptr<Channel>& c) {
1155 return c->type() == sigrok::ChannelType::LOGIC; });
1157 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1158 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1160 if (non_grouped_logic_signals.size() > 0) {
1161 const shared_ptr<TraceGroup> non_grouped_trace_group(
1162 make_shared<TraceGroup>());
1163 for (shared_ptr<Trace> trace : non_grouped_logic_signals)
1164 non_grouped_trace_group->add_child_item(trace);
1166 non_grouped_trace_group->restack_items();
1167 new_top_level_items.push_back(non_grouped_trace_group);
1170 // Enqueue the remaining channels as free ungrouped traces
1171 const vector< shared_ptr<Trace> > new_top_level_signals =
1172 extract_new_traces_for_channels(channels, signal_map, add_traces);
1173 new_top_level_items.insert(new_top_level_items.end(),
1174 new_top_level_signals.begin(), new_top_level_signals.end());
1176 // Enqueue any remaining traces i.e. decode traces
1177 new_top_level_items.insert(new_top_level_items.end(),
1178 add_traces.begin(), add_traces.end());
1180 // Remove any removed traces
1181 for (shared_ptr<Trace> trace : remove_traces) {
1182 TraceTreeItemOwner *const owner = trace->owner();
1184 owner->remove_child_item(trace);
1187 // Remove any empty trace groups
1188 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1189 if (group->child_items().size() == 0) {
1190 remove_child_item(group);
1194 // Add and position the pending top levels items
1195 int offset = v_extents().second;
1196 for (auto item : new_top_level_items) {
1197 add_child_item(item);
1199 // Position the item after the last item or at the top if there is none
1200 const pair<int, int> extents = item->v_extents();
1202 if (item->enabled())
1203 offset += -extents.first;
1205 item->force_to_v_offset(offset);
1207 if (item->enabled())
1208 offset += extents.second;
1214 viewport_->update();
1216 if (reset_scrollbar)
1217 set_scroll_default();
1220 void View::capture_state_updated(int state)
1222 if (state == Session::Running) {
1223 set_time_unit(util::TimeUnit::Samples);
1225 trigger_markers_.clear();
1227 // Activate "always zoom to fit" if the setting is enabled and we're
1228 // the main view of this session (other trace views may be used for
1229 // zooming and we don't want to mess them up)
1230 GlobalSettings settings;
1231 bool state = settings.value(GlobalSettings::Key_View_AlwaysZoomToFit).toBool();
1232 if (is_main_view_ && state) {
1233 always_zoom_to_fit_ = true;
1234 always_zoom_to_fit_changed(always_zoom_to_fit_);
1237 // Enable sticky scrolling if the setting is enabled
1238 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
1241 if (state == Session::Stopped) {
1242 // After acquisition has stopped we need to re-calculate the ticks once
1243 // as it's otherwise done when the user pans or zooms, which is too late
1244 calculate_tick_spacing();
1246 // Reset "always zoom to fit", the acquisition has stopped
1247 if (always_zoom_to_fit_) {
1248 // Perform a final zoom-to-fit before disabling
1249 zoom_fit(always_zoom_to_fit_);
1250 always_zoom_to_fit_ = false;
1251 always_zoom_to_fit_changed(always_zoom_to_fit_);
1256 void View::perform_delayed_view_update()
1258 if (always_zoom_to_fit_) {
1260 } else if (sticky_scrolling_) {
1261 // Make right side of the view sticky
1264 get_scroll_layout(length, offset);
1266 const QSize areaSize = viewport_->size();
1267 length = max(length - areaSize.width(), 0.0);
1269 set_offset(scale_ * length);
1272 determine_time_unit();
1275 viewport_->update();
1278 void View::process_sticky_events()
1280 if (sticky_events_ & TraceTreeItemHExtentsChanged)
1282 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
1283 restack_all_trace_tree_items();
1287 // Clear the sticky events
1291 void View::on_hover_point_changed()
1293 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1294 list_by_type<TraceTreeItem>());
1295 for (shared_ptr<TraceTreeItem> r : trace_tree_items)
1296 r->hover_point_changed();
1299 } // namespace TraceView
1300 } // namespace views