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 <QMouseEvent>
43 #include <QVBoxLayout>
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;
79 using std::make_shared;
83 using std::set_difference;
84 using std::shared_ptr;
85 using std::stringstream;
86 using std::unordered_map;
87 using std::unordered_set;
94 const Timestamp View::MaxScale("1e9");
95 const Timestamp View::MinScale("1e-12");
97 const int View::MaxScrollValue = INT_MAX / 2;
99 const int View::ScaleUnits[3] = {1, 2, 5};
102 CustomScrollArea::CustomScrollArea(QWidget *parent) :
103 QAbstractScrollArea(parent)
107 bool CustomScrollArea::viewportEvent(QEvent *event)
109 switch (event->type()) {
111 case QEvent::MouseButtonPress:
112 case QEvent::MouseButtonRelease:
113 case QEvent::MouseButtonDblClick:
114 case QEvent::MouseMove:
116 case QEvent::TouchBegin:
117 case QEvent::TouchUpdate:
118 case QEvent::TouchEnd:
121 return QAbstractScrollArea::viewportEvent(event);
125 View::View(Session &session, bool is_main_view, QWidget *parent) :
126 ViewBase(session, is_main_view, parent),
127 splitter_(new QSplitter()),
130 updating_scroll_(false),
131 settings_restored_(false),
132 header_was_shrunk_(false),
133 sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui()
134 always_zoom_to_fit_(false),
136 tick_prefix_(pv::util::SIPrefix::yocto),
138 time_unit_(util::TimeUnit::Time),
139 show_cursors_(false),
140 cursors_(new CursorPair(*this)),
141 next_flag_text_('A'),
143 hover_point_(-1, -1),
144 scroll_needs_defaults_(true),
146 scale_at_acq_start_(0),
147 offset_at_acq_start_(0),
148 suppress_zoom_to_fit_after_acq_(false)
150 QVBoxLayout *root_layout = new QVBoxLayout(this);
151 root_layout->setContentsMargins(0, 0, 0, 0);
152 root_layout->addWidget(splitter_);
154 viewport_ = new Viewport(*this);
155 scrollarea_ = new CustomScrollArea(splitter_);
156 scrollarea_->setViewport(viewport_);
157 scrollarea_->setFrameShape(QFrame::NoFrame);
159 ruler_ = new Ruler(*this);
161 header_ = new Header(*this);
162 header_->setMinimumWidth(10); // So that the arrow tips show at least
164 // We put the header into a simple layout so that we can add the top margin,
165 // allowing us to make it line up with the bottom of the ruler
166 QWidget *header_container = new QWidget();
167 header_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
168 QVBoxLayout *header_layout = new QVBoxLayout(header_container);
169 header_layout->setContentsMargins(0, ruler_->sizeHint().height(), 0, 0);
170 header_layout->addWidget(header_);
172 // To let the ruler and scrollarea be on the same split pane, we need a layout
173 QWidget *trace_container = new QWidget();
174 trace_container->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
175 QVBoxLayout *trace_layout = new QVBoxLayout(trace_container);
176 trace_layout->setSpacing(0); // We don't want space between the ruler and scrollarea
177 trace_layout->setContentsMargins(0, 0, 0, 0);
178 trace_layout->addWidget(ruler_);
179 trace_layout->addWidget(scrollarea_);
181 splitter_->addWidget(header_container);
182 splitter_->addWidget(trace_container);
183 splitter_->setHandleWidth(1); // Don't show a visible rubber band
184 splitter_->setCollapsible(0, false); // Prevent the header from collapsing
185 splitter_->setCollapsible(1, false); // Prevent the traces from collapsing
186 splitter_->setStretchFactor(0, 0); // Prevent the panes from being resized
187 splitter_->setStretchFactor(1, 1); // when the entire view is resized
188 splitter_->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
190 viewport_->installEventFilter(this);
191 ruler_->installEventFilter(this);
192 header_->installEventFilter(this);
194 // Set up settings and event handlers
195 GlobalSettings settings;
196 coloured_bg_ = settings.value(GlobalSettings::Key_View_ColouredBG).toBool();
198 connect(scrollarea_->horizontalScrollBar(), SIGNAL(valueChanged(int)),
199 this, SLOT(h_scroll_value_changed(int)));
200 connect(scrollarea_->verticalScrollBar(), SIGNAL(valueChanged(int)),
201 this, SLOT(v_scroll_value_changed()));
203 connect(header_, SIGNAL(selection_changed()),
204 ruler_, SLOT(clear_selection()));
205 connect(ruler_, SIGNAL(selection_changed()),
206 header_, SLOT(clear_selection()));
208 connect(header_, SIGNAL(selection_changed()),
209 this, SIGNAL(selection_changed()));
210 connect(ruler_, SIGNAL(selection_changed()),
211 this, SIGNAL(selection_changed()));
213 connect(splitter_, SIGNAL(splitterMoved(int, int)),
214 this, SLOT(on_splitter_moved()));
216 connect(&lazy_event_handler_, SIGNAL(timeout()),
217 this, SLOT(process_sticky_events()));
218 lazy_event_handler_.setSingleShot(true);
220 // Trigger the initial event manually. The default device has signals
221 // which were created before this object came into being
224 // make sure the transparent widgets are on the top
228 // Update the zoom state
229 calculate_tick_spacing();
232 Session& View::session()
237 const Session& View::session() const
242 unordered_set< shared_ptr<Signal> > View::signals() const
247 void View::clear_signals()
249 ViewBase::clear_signalbases();
253 void View::add_signal(const shared_ptr<Signal> signal)
255 ViewBase::add_signalbase(signal->base());
256 signals_.insert(signal);
258 connect(signal->base().get(), SIGNAL(name_changed(const QString&)),
259 this, SLOT(on_signal_name_changed()));
263 void View::clear_decode_signals()
265 decode_traces_.clear();
268 void View::add_decode_signal(shared_ptr<data::DecodeSignal> signal)
270 shared_ptr<DecodeTrace> d(
271 new DecodeTrace(session_, signal, decode_traces_.size()));
272 decode_traces_.push_back(d);
274 connect(signal.get(), SIGNAL(name_changed(const QString&)),
275 this, SLOT(on_signal_name_changed()));
278 void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
280 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
281 if ((*i)->base() == signal) {
282 decode_traces_.erase(i);
294 const View* View::view() const
299 Viewport* View::viewport()
304 const Viewport* View::viewport() const
309 void View::save_settings(QSettings &settings) const
311 settings.setValue("scale", scale_);
312 settings.setValue("v_offset",
313 scrollarea_->verticalScrollBar()->sliderPosition());
315 settings.setValue("splitter_state", splitter_->saveState());
318 boost::archive::text_oarchive oa(ss);
319 oa << boost::serialization::make_nvp("offset", offset_);
320 settings.setValue("offset", QString::fromStdString(ss.str()));
322 for (shared_ptr<Signal> signal : signals_) {
323 settings.beginGroup(signal->base()->internal_name());
324 signal->save_settings(settings);
329 void View::restore_settings(QSettings &settings)
331 // Note: It is assumed that this function is only called once,
332 // immediately after restoring a previous session.
334 if (settings.contains("scale"))
335 set_scale(settings.value("scale").toDouble());
337 if (settings.contains("offset")) {
338 util::Timestamp offset;
340 ss << settings.value("offset").toString().toStdString();
342 boost::archive::text_iarchive ia(ss);
343 ia >> boost::serialization::make_nvp("offset", offset);
348 if (settings.contains("splitter_state"))
349 splitter_->restoreState(settings.value("splitter_state").toByteArray());
351 for (shared_ptr<Signal> signal : signals_) {
352 settings.beginGroup(signal->base()->internal_name());
353 signal->restore_settings(settings);
357 if (settings.contains("v_offset")) {
358 saved_v_offset_ = settings.value("v_offset").toInt();
359 set_v_offset(saved_v_offset_);
360 scroll_needs_defaults_ = false;
361 // Note: see eventFilter() for additional information
364 settings_restored_ = true;
365 suppress_zoom_to_fit_after_acq_ = true;
367 // Update the ruler so that it uses the new scale
368 calculate_tick_spacing();
371 vector< shared_ptr<TimeItem> > View::time_items() const
373 const vector<shared_ptr<Flag>> f(flags());
374 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
375 items.push_back(cursors_);
376 items.push_back(cursors_->first());
377 items.push_back(cursors_->second());
379 for (auto trigger_marker : trigger_markers_)
380 items.push_back(trigger_marker);
385 double View::scale() const
390 void View::set_scale(double scale)
392 if (scale_ != scale) {
398 const Timestamp& View::offset() const
403 void View::set_offset(const pv::util::Timestamp& offset)
405 if (offset_ != offset) {
411 int View::owner_visual_v_offset() const
413 return -scrollarea_->verticalScrollBar()->sliderPosition();
416 void View::set_v_offset(int offset)
418 scrollarea_->verticalScrollBar()->setSliderPosition(offset);
423 unsigned int View::depth() const
428 pv::util::SIPrefix View::tick_prefix() const
433 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
435 if (tick_prefix_ != tick_prefix) {
436 tick_prefix_ = tick_prefix;
437 tick_prefix_changed();
441 unsigned int View::tick_precision() const
443 return tick_precision_;
446 void View::set_tick_precision(unsigned tick_precision)
448 if (tick_precision_ != tick_precision) {
449 tick_precision_ = tick_precision;
450 tick_precision_changed();
454 const pv::util::Timestamp& View::tick_period() const
459 void View::set_tick_period(const pv::util::Timestamp& tick_period)
461 if (tick_period_ != tick_period) {
462 tick_period_ = tick_period;
463 tick_period_changed();
467 TimeUnit View::time_unit() const
472 void View::set_time_unit(pv::util::TimeUnit time_unit)
474 if (time_unit_ != time_unit) {
475 time_unit_ = time_unit;
480 void View::zoom(double steps)
482 zoom(steps, viewport_->width() / 2);
485 void View::zoom(double steps, int offset)
487 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
490 void View::zoom_fit(bool gui_state)
492 // Act as one-shot when stopped, toggle along with the GUI otherwise
493 if (session_.get_capture_state() == Session::Stopped) {
494 always_zoom_to_fit_ = false;
495 always_zoom_to_fit_changed(false);
497 always_zoom_to_fit_ = gui_state;
498 always_zoom_to_fit_changed(gui_state);
501 const pair<Timestamp, Timestamp> extents = get_time_extents();
502 const Timestamp delta = extents.second - extents.first;
503 if (delta < Timestamp("1e-12"))
507 const int w = viewport_->width();
511 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
512 set_scale_offset(scale.convert_to<double>(), extents.first);
515 void View::zoom_one_to_one()
517 using pv::data::SignalData;
519 // Make a set of all the visible data objects
520 set< shared_ptr<SignalData> > visible_data = get_visible_data();
521 if (visible_data.empty())
525 const int w = viewport_->width();
529 set_zoom(1.0 / session_.get_samplerate(), w / 2);
532 void View::set_scale_offset(double scale, const Timestamp& offset)
534 // Disable sticky scrolling / always zoom to fit when acquisition runs
535 // and user drags the viewport
536 if ((scale_ == scale) && (offset_ != offset) &&
537 (session_.get_capture_state() == Session::Running)) {
539 if (sticky_scrolling_) {
540 sticky_scrolling_ = false;
541 sticky_scrolling_changed(false);
544 if (always_zoom_to_fit_) {
545 always_zoom_to_fit_ = false;
546 always_zoom_to_fit_changed(false);
553 calculate_tick_spacing();
560 set< shared_ptr<SignalData> > View::get_visible_data() const
562 // Make a set of all the visible data objects
563 set< shared_ptr<SignalData> > visible_data;
564 for (const shared_ptr<Signal> sig : signals_)
566 visible_data.insert(sig->data());
571 pair<Timestamp, Timestamp> View::get_time_extents() const
573 boost::optional<Timestamp> left_time, right_time;
574 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
575 for (const shared_ptr<SignalData> d : visible_data) {
576 const vector< shared_ptr<Segment> > segments = d->segments();
577 for (const shared_ptr<Segment> &s : segments) {
578 double samplerate = s->samplerate();
579 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
581 const Timestamp start_time = s->start_time();
582 left_time = left_time ?
583 min(*left_time, start_time) :
585 right_time = right_time ?
586 max(*right_time, start_time + d->max_sample_count() / samplerate) :
587 start_time + d->max_sample_count() / samplerate;
591 if (!left_time || !right_time)
592 return make_pair(0, 0);
594 assert(*left_time < *right_time);
595 return make_pair(*left_time, *right_time);
598 void View::enable_show_sampling_points(bool state)
605 void View::enable_show_analog_minor_grid(bool state)
612 void View::enable_coloured_bg(bool state)
614 coloured_bg_ = state;
618 bool View::coloured_bg() const
623 bool View::cursors_shown() const
625 return show_cursors_;
628 void View::show_cursors(bool show)
630 show_cursors_ = show;
635 void View::centre_cursors()
637 const double time_width = scale_ * viewport_->width();
638 cursors_->first()->set_time(offset_ + time_width * 0.4);
639 cursors_->second()->set_time(offset_ + time_width * 0.6);
644 shared_ptr<CursorPair> View::cursors() const
649 void View::add_flag(const Timestamp& time)
651 flags_.push_back(make_shared<Flag>(*this, time,
652 QString("%1").arg(next_flag_text_)));
654 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
655 (next_flag_text_ + 1);
657 time_item_appearance_changed(true, true);
660 void View::remove_flag(shared_ptr<Flag> flag)
663 time_item_appearance_changed(true, true);
666 vector< shared_ptr<Flag> > View::flags() const
668 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
669 stable_sort(flags.begin(), flags.end(),
670 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
671 return a->time() < b->time();
677 const QPoint& View::hover_point() const
682 void View::restack_all_trace_tree_items()
684 // Make a list of owners that is sorted from deepest first
685 const vector<shared_ptr<TraceTreeItem>> items(
686 list_by_type<TraceTreeItem>());
687 set< TraceTreeItemOwner* > owners;
688 for (const auto &r : items)
689 owners.insert(r->owner());
690 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
691 sort(sorted_owners.begin(), sorted_owners.end(),
692 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
693 return a->depth() > b->depth(); });
695 // Restack the items recursively
696 for (auto &o : sorted_owners)
699 // Animate the items to their destination
700 for (const auto &i : items)
701 i->animate_to_layout_v_offset();
704 void View::trigger_event(util::Timestamp location)
706 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
709 void View::get_scroll_layout(double &length, Timestamp &offset) const
711 const pair<Timestamp, Timestamp> extents = get_time_extents();
712 length = ((extents.second - extents.first) / scale_).convert_to<double>();
713 offset = offset_ / scale_;
716 void View::set_zoom(double scale, int offset)
718 // Reset the "always zoom to fit" feature as the user changed the zoom
719 always_zoom_to_fit_ = false;
720 always_zoom_to_fit_changed(false);
722 const Timestamp cursor_offset = offset_ + scale_ * offset;
723 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
724 const Timestamp new_offset = cursor_offset - new_scale * offset;
725 set_scale_offset(new_scale.convert_to<double>(), new_offset);
728 void View::calculate_tick_spacing()
730 const double SpacingIncrement = 10.0f;
731 const double MinValueSpacing = 40.0f;
733 // Figure out the highest numeric value visible on a label
734 const QSize areaSize = viewport_->size();
735 const Timestamp max_time = max(fabs(offset_),
736 fabs(offset_ + scale_ * areaSize.width()));
738 double min_width = SpacingIncrement;
739 double label_width, tick_period_width;
741 QFontMetrics m(QApplication::font());
743 // Copies of the member variables with the same name, used in the calculation
744 // and written back afterwards, so that we don't emit signals all the time
745 // during the calculation.
746 pv::util::Timestamp tick_period = tick_period_;
747 pv::util::SIPrefix tick_prefix = tick_prefix_;
748 unsigned tick_precision = tick_precision_;
751 const double min_period = scale_ * min_width;
753 const int order = (int)floorf(log10f(min_period));
754 const pv::util::Timestamp order_decimal =
755 pow(pv::util::Timestamp(10), order);
757 // Allow for a margin of error so that a scale unit of 1 can be used.
758 // Otherwise, for a SU of 1 the tick period will almost always be below
759 // the min_period by a small amount - and thus skipped in favor of 2.
760 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
761 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
762 double tp_with_margin;
763 unsigned int unit = 0;
766 tp_with_margin = order_decimal.convert_to<double>() *
767 (ScaleUnits[unit++] + tp_margin);
768 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
770 tick_period = order_decimal * ScaleUnits[unit - 1];
771 tick_prefix = static_cast<pv::util::SIPrefix>(
772 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
774 // Precision is the number of fractional digits required, not
775 // taking the prefix into account (and it must never be negative)
776 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
778 tick_period_width = (tick_period / scale_).convert_to<double>();
780 const QString label_text = Ruler::format_time_with_distance(
781 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
783 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
784 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
787 min_width += SpacingIncrement;
788 } while (tick_period_width < label_width);
790 set_tick_period(tick_period);
791 set_tick_prefix(tick_prefix);
792 set_tick_precision(tick_precision);
795 void View::adjust_top_margin()
799 const QSize areaSize = viewport_->size();
801 const pair<int, int> extents = v_extents();
802 const int top_margin = owner_visual_v_offset() + extents.first;
803 const int trace_bottom = owner_visual_v_offset() + extents.first + extents.second;
805 // Do we have empty space at the top while the last trace goes out of screen?
806 if ((top_margin > 0) && (trace_bottom > areaSize.height())) {
807 const int trace_height = extents.second - extents.first;
809 // Center everything vertically if there is enough space
810 if (areaSize.height() >= trace_height)
811 set_v_offset(extents.first -
812 ((areaSize.height() - trace_height) / 2));
814 // Remove the top margin to make as many traces fit on screen as possible
815 set_v_offset(extents.first);
819 void View::update_scroll()
822 QScrollBar *hscrollbar = scrollarea_->horizontalScrollBar();
823 QScrollBar *vscrollbar = scrollarea_->verticalScrollBar();
825 const QSize areaSize = viewport_->size();
827 // Set the horizontal scroll bar
830 get_scroll_layout(length, offset);
831 length = max(length - areaSize.width(), 0.0);
833 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
835 hscrollbar->setPageStep(areaSize.width() / 2);
836 hscrollbar->setSingleStep(major_tick_distance);
838 updating_scroll_ = true;
840 if (length < MaxScrollValue) {
841 hscrollbar->setRange(0, length);
842 hscrollbar->setSliderPosition(offset.convert_to<double>());
844 hscrollbar->setRange(0, MaxScrollValue);
845 hscrollbar->setSliderPosition(
846 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
849 updating_scroll_ = false;
851 // Set the vertical scrollbar
852 vscrollbar->setPageStep(areaSize.height());
853 vscrollbar->setSingleStep(areaSize.height() / 8);
855 const pair<int, int> extents = v_extents();
857 // Don't change the scrollbar range if there are no traces
858 if (extents.first != extents.second)
859 vscrollbar->setRange(extents.first - areaSize.height(),
862 if (scroll_needs_defaults_)
863 set_scroll_default();
866 void View::reset_scroll()
868 scrollarea_->verticalScrollBar()->setRange(0, 0);
871 void View::set_scroll_default()
875 const QSize areaSize = viewport_->size();
877 const pair<int, int> extents = v_extents();
878 const int trace_height = extents.second - extents.first;
880 // Do all traces fit in the view?
881 if (areaSize.height() >= trace_height)
882 // Center all traces vertically
883 set_v_offset(extents.first -
884 ((areaSize.height() - trace_height) / 2));
886 // Put the first trace at the top, letting the bottom ones overflow
887 set_v_offset(extents.first);
890 void View::determine_if_header_was_shrunk()
892 const int header_pane_width = splitter_->sizes().front();
893 const int header_width = header_->extended_size_hint().width();
895 // Allow for a slight margin of error so that we also accept
896 // slight differences when e.g. a label name change increased
898 header_was_shrunk_ = (header_pane_width < (header_width - 10));
901 void View::expand_header_to_fit()
903 // Setting the maximum width of the header widget doesn't work as
904 // expected because the splitter would allow the user to make the
905 // pane wider than that, creating empty space as a result.
906 // To make this work, we stricly enforce the maximum width by
907 // expanding the header unless the user shrunk it on purpose.
908 // As we're then setting the width of the header pane, we set the
909 // splitter to the maximum allowed position.
911 int splitter_area_width = 0;
912 for (int w : splitter_->sizes())
913 splitter_area_width += w;
915 // Make sure the header has enough horizontal space to show all labels fully
916 QList<int> pane_sizes;
917 pane_sizes.push_back(header_->extended_size_hint().width());
918 pane_sizes.push_back(splitter_area_width - header_->extended_size_hint().width());
919 splitter_->setSizes(pane_sizes);
922 void View::update_layout()
927 TraceTreeItemOwner* View::find_prevalent_trace_group(
928 const shared_ptr<sigrok::ChannelGroup> &group,
929 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
934 unordered_set<TraceTreeItemOwner*> owners;
935 vector<TraceTreeItemOwner*> owner_list;
937 // Make a set and a list of all the owners
938 for (const auto &channel : group->channels()) {
939 for (auto entry : signal_map) {
940 if (entry.first->channel() == channel) {
941 TraceTreeItemOwner *const o = (entry.second)->owner();
942 owner_list.push_back(o);
948 // Iterate through the list of owners, and find the most prevalent
949 size_t max_prevalence = 0;
950 TraceTreeItemOwner *prevalent_owner = nullptr;
951 for (TraceTreeItemOwner *owner : owners) {
952 const size_t prevalence = count_if(
953 owner_list.begin(), owner_list.end(),
954 [&](TraceTreeItemOwner *o) { return o == owner; });
955 if (prevalence > max_prevalence) {
956 max_prevalence = prevalence;
957 prevalent_owner = owner;
961 return prevalent_owner;
964 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
965 const vector< shared_ptr<sigrok::Channel> > &channels,
966 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
968 set< shared_ptr<Trace> > &add_list)
970 vector< shared_ptr<Trace> > filtered_traces;
972 for (const auto &channel : channels) {
973 for (auto entry : signal_map) {
974 if (entry.first->channel() == channel) {
975 shared_ptr<Trace> trace = entry.second;
976 const auto list_iter = add_list.find(trace);
977 if (list_iter == add_list.end())
980 filtered_traces.push_back(trace);
981 add_list.erase(list_iter);
986 return filtered_traces;
989 void View::determine_time_unit()
991 // Check whether we know the sample rate and hence can use time as the unit
992 if (time_unit_ == util::TimeUnit::Samples) {
993 // Check all signals but...
994 for (const shared_ptr<Signal> signal : signals_) {
995 const shared_ptr<SignalData> data = signal->data();
997 // ...only check first segment of each
998 const vector< shared_ptr<Segment> > segments = data->segments();
999 if (!segments.empty())
1000 if (segments[0]->samplerate()) {
1001 set_time_unit(util::TimeUnit::Time);
1008 bool View::eventFilter(QObject *object, QEvent *event)
1010 const QEvent::Type type = event->type();
1011 if (type == QEvent::MouseMove) {
1013 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
1014 if (object == viewport_)
1015 hover_point_ = mouse_event->pos();
1016 else if (object == ruler_)
1017 hover_point_ = QPoint(mouse_event->x(), 0);
1018 else if (object == header_)
1019 hover_point_ = QPoint(0, mouse_event->y());
1021 hover_point_ = QPoint(-1, -1);
1023 update_hover_point();
1025 } else if (type == QEvent::Leave) {
1026 hover_point_ = QPoint(-1, -1);
1027 update_hover_point();
1028 } else if (type == QEvent::Show) {
1030 // This is somewhat of a hack, unfortunately. We cannot use
1031 // set_v_offset() from within restore_settings() as the view
1032 // at that point is neither visible nor properly sized.
1033 // This is the least intrusive workaround I could come up
1034 // with: set the vertical offset (or scroll defaults) when
1035 // the view is shown, which happens after all widgets were
1036 // resized to their final sizes.
1039 if (!settings_restored_)
1040 expand_header_to_fit();
1042 if (scroll_needs_defaults_) {
1043 set_scroll_default();
1044 scroll_needs_defaults_ = false;
1047 if (saved_v_offset_) {
1048 set_v_offset(saved_v_offset_);
1049 saved_v_offset_ = 0;
1053 return QObject::eventFilter(object, event);
1056 void View::resizeEvent(QResizeEvent* event)
1058 // Only adjust the top margin if we shrunk vertically
1059 if (event->size().height() < event->oldSize().height())
1060 adjust_top_margin();
1065 void View::update_hover_point()
1067 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1068 list_by_type<TraceTreeItem>());
1069 for (shared_ptr<TraceTreeItem> r : trace_tree_items)
1070 r->hover_point_changed(hover_point_);
1072 hover_point_changed(hover_point_);
1075 void View::row_item_appearance_changed(bool label, bool content)
1080 viewport_->update();
1083 void View::time_item_appearance_changed(bool label, bool content)
1088 // Make sure the header pane width is updated, too
1093 viewport_->update();
1096 void View::extents_changed(bool horz, bool vert)
1099 (horz ? TraceTreeItemHExtentsChanged : 0) |
1100 (vert ? TraceTreeItemVExtentsChanged : 0);
1102 lazy_event_handler_.start();
1105 void View::on_signal_name_changed()
1107 if (!header_was_shrunk_)
1108 expand_header_to_fit();
1111 void View::on_splitter_moved()
1113 // The header can only shrink when the splitter is moved manually
1114 determine_if_header_was_shrunk();
1116 if (!header_was_shrunk_)
1117 expand_header_to_fit();
1120 void View::h_scroll_value_changed(int value)
1122 if (updating_scroll_)
1125 // Disable sticky scrolling when user moves the horizontal scroll bar
1126 // during a running acquisition
1127 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1128 sticky_scrolling_ = false;
1129 sticky_scrolling_changed(false);
1132 const int range = scrollarea_->horizontalScrollBar()->maximum();
1133 if (range < MaxScrollValue)
1134 set_offset(scale_ * value);
1138 get_scroll_layout(length, offset);
1139 set_offset(scale_ * length * value / MaxScrollValue);
1143 viewport_->update();
1146 void View::v_scroll_value_changed()
1149 viewport_->update();
1152 void View::signals_changed()
1154 using sigrok::Channel;
1156 vector< shared_ptr<Channel> > channels;
1157 shared_ptr<sigrok::Device> sr_dev;
1159 // Do we need to set the vertical scrollbar to its default position later?
1160 // We do if there are no traces, i.e. the scroll bar has no range set
1161 bool reset_scrollbar =
1162 (scrollarea_->verticalScrollBar()->minimum() ==
1163 scrollarea_->verticalScrollBar()->maximum());
1165 if (!session_.device()) {
1169 sr_dev = session_.device()->device();
1171 channels = sr_dev->channels();
1174 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1176 // Make a list of traces that are being added, and a list of traces
1177 // that are being removed
1178 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1179 const set<shared_ptr<Trace>> prev_traces(
1180 prev_trace_list.begin(), prev_trace_list.end());
1182 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1184 #ifdef ENABLE_DECODE
1185 traces.insert(decode_traces_.begin(), decode_traces_.end());
1188 set< shared_ptr<Trace> > add_traces;
1189 set_difference(traces.begin(), traces.end(),
1190 prev_traces.begin(), prev_traces.end(),
1191 inserter(add_traces, add_traces.begin()));
1193 set< shared_ptr<Trace> > remove_traces;
1194 set_difference(prev_traces.begin(), prev_traces.end(),
1195 traces.begin(), traces.end(),
1196 inserter(remove_traces, remove_traces.begin()));
1198 // Make a look-up table of sigrok Channels to pulseview Signals
1199 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1201 for (const shared_ptr<Signal> &sig : signals_)
1202 signal_map[sig->base()] = sig;
1204 // Populate channel groups
1206 for (auto entry : sr_dev->channel_groups()) {
1207 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1209 if (group->channels().size() <= 1)
1212 // Find best trace group to add to
1213 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1216 // If there is no trace group, create one
1217 shared_ptr<TraceGroup> new_trace_group;
1219 new_trace_group.reset(new TraceGroup());
1220 owner = new_trace_group.get();
1223 // Extract traces for the trace group, removing them from
1225 const vector< shared_ptr<Trace> > new_traces_in_group =
1226 extract_new_traces_for_channels(group->channels(),
1227 signal_map, add_traces);
1229 // Add the traces to the group
1230 const pair<int, int> prev_v_extents = owner->v_extents();
1231 int offset = prev_v_extents.second - prev_v_extents.first;
1232 for (shared_ptr<Trace> trace : new_traces_in_group) {
1234 owner->add_child_item(trace);
1236 const pair<int, int> extents = trace->v_extents();
1237 if (trace->enabled())
1238 offset += -extents.first;
1239 trace->force_to_v_offset(offset);
1240 if (trace->enabled())
1241 offset += extents.second;
1244 if (new_trace_group) {
1245 // Assign proper vertical offsets to each channel in the group
1246 new_trace_group->restack_items();
1248 // If this is a new group, enqueue it in the new top level
1250 if (!new_traces_in_group.empty())
1251 new_top_level_items.push_back(new_trace_group);
1255 // Enqueue the remaining logic channels in a group
1256 vector< shared_ptr<Channel> > logic_channels;
1257 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1258 [](const shared_ptr<Channel>& c) {
1259 return c->type() == sigrok::ChannelType::LOGIC; });
1261 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1262 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1264 if (non_grouped_logic_signals.size() > 0) {
1265 const shared_ptr<TraceGroup> non_grouped_trace_group(
1266 make_shared<TraceGroup>());
1267 for (shared_ptr<Trace> trace : non_grouped_logic_signals)
1268 non_grouped_trace_group->add_child_item(trace);
1270 non_grouped_trace_group->restack_items();
1271 new_top_level_items.push_back(non_grouped_trace_group);
1274 // Enqueue the remaining channels as free ungrouped traces
1275 const vector< shared_ptr<Trace> > new_top_level_signals =
1276 extract_new_traces_for_channels(channels, signal_map, add_traces);
1277 new_top_level_items.insert(new_top_level_items.end(),
1278 new_top_level_signals.begin(), new_top_level_signals.end());
1280 // Enqueue any remaining traces i.e. decode traces
1281 new_top_level_items.insert(new_top_level_items.end(),
1282 add_traces.begin(), add_traces.end());
1284 // Remove any removed traces
1285 for (shared_ptr<Trace> trace : remove_traces) {
1286 TraceTreeItemOwner *const owner = trace->owner();
1288 owner->remove_child_item(trace);
1291 // Remove any empty trace groups
1292 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1293 if (group->child_items().size() == 0) {
1294 remove_child_item(group);
1298 // Add and position the pending top levels items
1299 int offset = v_extents().second;
1300 for (auto item : new_top_level_items) {
1301 add_child_item(item);
1303 // Position the item after the last item or at the top if there is none
1304 const pair<int, int> extents = item->v_extents();
1306 if (item->enabled())
1307 offset += -extents.first;
1309 item->force_to_v_offset(offset);
1311 if (item->enabled())
1312 offset += extents.second;
1316 if (!new_top_level_items.empty())
1317 // Expand the header pane because the header should become fully
1318 // visible when new signals are added
1319 expand_header_to_fit();
1324 viewport_->update();
1326 if (reset_scrollbar)
1327 set_scroll_default();
1330 void View::capture_state_updated(int state)
1332 GlobalSettings settings;
1334 if (state == Session::Running) {
1335 set_time_unit(util::TimeUnit::Samples);
1337 trigger_markers_.clear();
1339 scale_at_acq_start_ = scale_;
1340 offset_at_acq_start_ = offset_;
1342 // Activate "always zoom to fit" if the setting is enabled and we're
1343 // the main view of this session (other trace views may be used for
1344 // zooming and we don't want to mess them up)
1345 bool state = settings.value(GlobalSettings::Key_View_ZoomToFitDuringAcq).toBool();
1346 if (is_main_view_ && state) {
1347 always_zoom_to_fit_ = true;
1348 always_zoom_to_fit_changed(always_zoom_to_fit_);
1351 // Enable sticky scrolling if the setting is enabled
1352 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
1355 if (state == Session::Stopped) {
1356 // After acquisition has stopped we need to re-calculate the ticks once
1357 // as it's otherwise done when the user pans or zooms, which is too late
1358 calculate_tick_spacing();
1360 // Reset "always zoom to fit", the acquisition has stopped
1361 if (always_zoom_to_fit_) {
1362 // Perform a final zoom-to-fit before disabling
1363 zoom_fit(always_zoom_to_fit_);
1364 always_zoom_to_fit_ = false;
1365 always_zoom_to_fit_changed(always_zoom_to_fit_);
1368 bool zoom_to_fit_after_acq =
1369 settings.value(GlobalSettings::Key_View_ZoomToFitAfterAcq).toBool();
1371 // Only perform zoom-to-fit if the user hasn't altered the viewport and
1372 // we didn't restore settings in the meanwhile
1373 if (zoom_to_fit_after_acq &&
1374 !suppress_zoom_to_fit_after_acq_ &&
1375 (scale_ == scale_at_acq_start_) &&
1376 (offset_ == offset_at_acq_start_))
1377 zoom_fit(false); // We're stopped, so the GUI state doesn't matter
1379 suppress_zoom_to_fit_after_acq_ = false;
1383 void View::on_segment_changed(int segment)
1385 current_segment_ = segment - 1;
1387 for (shared_ptr<Signal> signal : signals_)
1388 signal->set_current_segment(current_segment_);
1390 viewport_->update();
1393 void View::perform_delayed_view_update()
1395 if (always_zoom_to_fit_) {
1397 } else if (sticky_scrolling_) {
1398 // Make right side of the view sticky
1401 get_scroll_layout(length, offset);
1403 const QSize areaSize = viewport_->size();
1404 length = max(length - areaSize.width(), 0.0);
1406 set_offset(scale_ * length);
1409 determine_time_unit();
1412 viewport_->update();
1415 void View::process_sticky_events()
1417 if (sticky_events_ & TraceTreeItemHExtentsChanged)
1419 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
1420 restack_all_trace_tree_items();
1424 // Clear the sticky events
1428 } // namespace trace
1429 } // namespace views