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),
153 size_finalized_(false)
155 GlobalSettings settings;
156 coloured_bg_ = settings.value(GlobalSettings::Key_View_ColouredBG).toBool();
158 connect(scrollarea_.horizontalScrollBar(), SIGNAL(valueChanged(int)),
159 this, SLOT(h_scroll_value_changed(int)));
160 connect(scrollarea_.verticalScrollBar(), SIGNAL(valueChanged(int)),
161 this, SLOT(v_scroll_value_changed()));
163 connect(header_, SIGNAL(selection_changed()),
164 ruler_, SLOT(clear_selection()));
165 connect(ruler_, SIGNAL(selection_changed()),
166 header_, SLOT(clear_selection()));
168 connect(header_, SIGNAL(selection_changed()),
169 this, SIGNAL(selection_changed()));
170 connect(ruler_, SIGNAL(selection_changed()),
171 this, SIGNAL(selection_changed()));
173 connect(this, SIGNAL(hover_point_changed()),
174 this, SLOT(on_hover_point_changed()));
176 connect(&lazy_event_handler_, SIGNAL(timeout()),
177 this, SLOT(process_sticky_events()));
178 lazy_event_handler_.setSingleShot(true);
180 /* To let the scroll area fill up the parent QWidget (this), we need a layout */
181 QHBoxLayout *layout = new QHBoxLayout(this);
183 layout->setContentsMargins(0, 0, 0, 0);
184 layout->addWidget(&scrollarea_);
186 scrollarea_.setViewport(viewport_);
188 viewport_->installEventFilter(this);
189 ruler_->installEventFilter(this);
190 header_->installEventFilter(this);
192 // Trigger the initial event manually. The default device has signals
193 // which were created before this object came into being
196 // make sure the transparent widgets are on the top
200 // Update the zoom state
201 calculate_tick_spacing();
204 Session& View::session()
209 const Session& View::session() const
214 unordered_set< shared_ptr<Signal> > View::signals() const
219 void View::clear_signals()
221 ViewBase::clear_signalbases();
225 void View::add_signal(const shared_ptr<Signal> signal)
227 ViewBase::add_signalbase(signal->base());
228 signals_.insert(signal);
232 void View::clear_decode_signals()
234 decode_traces_.clear();
237 void View::add_decode_signal(shared_ptr<data::SignalBase> signalbase)
239 shared_ptr<DecodeTrace> d(
240 new DecodeTrace(session_, signalbase, decode_traces_.size()));
241 decode_traces_.push_back(d);
244 void View::remove_decode_signal(shared_ptr<data::SignalBase> signalbase)
246 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
247 if ((*i)->base() == signalbase) {
248 decode_traces_.erase(i);
260 const View* View::view() const
265 Viewport* View::viewport()
270 const Viewport* View::viewport() const
275 void View::save_settings(QSettings &settings) const
277 settings.setValue("scale", scale_);
278 settings.setValue("v_offset",
279 scrollarea_.verticalScrollBar()->sliderPosition());
282 boost::archive::text_oarchive oa(ss);
283 oa << boost::serialization::make_nvp("offset", offset_);
284 settings.setValue("offset", QString::fromStdString(ss.str()));
286 for (shared_ptr<Signal> signal : signals_) {
287 settings.beginGroup(signal->base()->internal_name());
288 signal->save_settings(settings);
293 void View::restore_settings(QSettings &settings)
295 // Note: It is assumed that this function is only called once,
296 // immediately after restoring a previous session.
298 if (settings.contains("scale"))
299 set_scale(settings.value("scale").toDouble());
301 if (settings.contains("offset")) {
302 util::Timestamp offset;
304 ss << settings.value("offset").toString().toStdString();
306 boost::archive::text_iarchive ia(ss);
307 ia >> boost::serialization::make_nvp("offset", offset);
312 for (shared_ptr<Signal> signal : signals_) {
313 settings.beginGroup(signal->base()->internal_name());
314 signal->restore_settings(settings);
318 if (settings.contains("v_offset")) {
319 saved_v_offset_ = settings.value("v_offset").toInt();
320 set_v_offset(saved_v_offset_);
321 scroll_needs_defaults_ = false;
322 // Note: see resizeEvent() for additional information
326 vector< shared_ptr<TimeItem> > View::time_items() const
328 const vector<shared_ptr<Flag>> f(flags());
329 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
330 items.push_back(cursors_);
331 items.push_back(cursors_->first());
332 items.push_back(cursors_->second());
334 for (auto trigger_marker : trigger_markers_)
335 items.push_back(trigger_marker);
340 double View::scale() const
345 void View::set_scale(double scale)
347 if (scale_ != scale) {
349 Q_EMIT scale_changed();
353 const Timestamp& View::offset() const
358 void View::set_offset(const pv::util::Timestamp& offset)
360 if (offset_ != offset) {
362 Q_EMIT offset_changed();
366 int View::owner_visual_v_offset() const
368 return -scrollarea_.verticalScrollBar()->sliderPosition();
371 void View::set_v_offset(int offset)
373 scrollarea_.verticalScrollBar()->setSliderPosition(offset);
378 unsigned int View::depth() const
383 pv::util::SIPrefix View::tick_prefix() const
388 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
390 if (tick_prefix_ != tick_prefix) {
391 tick_prefix_ = tick_prefix;
392 Q_EMIT tick_prefix_changed();
396 unsigned int View::tick_precision() const
398 return tick_precision_;
401 void View::set_tick_precision(unsigned tick_precision)
403 if (tick_precision_ != tick_precision) {
404 tick_precision_ = tick_precision;
405 Q_EMIT tick_precision_changed();
409 const pv::util::Timestamp& View::tick_period() const
414 void View::set_tick_period(const pv::util::Timestamp& tick_period)
416 if (tick_period_ != tick_period) {
417 tick_period_ = tick_period;
418 Q_EMIT tick_period_changed();
422 TimeUnit View::time_unit() const
427 void View::set_time_unit(pv::util::TimeUnit time_unit)
429 if (time_unit_ != time_unit) {
430 time_unit_ = time_unit;
431 Q_EMIT time_unit_changed();
435 void View::zoom(double steps)
437 zoom(steps, viewport_->width() / 2);
440 void View::zoom(double steps, int offset)
442 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
445 void View::zoom_fit(bool gui_state)
447 // Act as one-shot when stopped, toggle along with the GUI otherwise
448 if (session_.get_capture_state() == Session::Stopped) {
449 always_zoom_to_fit_ = false;
450 always_zoom_to_fit_changed(false);
452 always_zoom_to_fit_ = gui_state;
453 always_zoom_to_fit_changed(gui_state);
456 const pair<Timestamp, Timestamp> extents = get_time_extents();
457 const Timestamp delta = extents.second - extents.first;
458 if (delta < Timestamp("1e-12"))
462 const int w = viewport_->width();
466 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
467 set_scale_offset(scale.convert_to<double>(), extents.first);
470 void View::zoom_one_to_one()
472 using pv::data::SignalData;
474 // Make a set of all the visible data objects
475 set< shared_ptr<SignalData> > visible_data = get_visible_data();
476 if (visible_data.empty())
480 const int w = viewport_->width();
484 set_zoom(1.0 / session_.get_samplerate(), w / 2);
487 void View::set_scale_offset(double scale, const Timestamp& offset)
489 // Disable sticky scrolling / always zoom to fit when acquisition runs
490 // and user drags the viewport
491 if ((scale_ == scale) && (offset_ != offset) &&
492 (session_.get_capture_state() == Session::Running)) {
494 if (sticky_scrolling_) {
495 sticky_scrolling_ = false;
496 sticky_scrolling_changed(false);
499 if (always_zoom_to_fit_) {
500 always_zoom_to_fit_ = false;
501 always_zoom_to_fit_changed(false);
508 calculate_tick_spacing();
515 set< shared_ptr<SignalData> > View::get_visible_data() const
517 // Make a set of all the visible data objects
518 set< shared_ptr<SignalData> > visible_data;
519 for (const shared_ptr<Signal> sig : signals_)
521 visible_data.insert(sig->data());
526 pair<Timestamp, Timestamp> View::get_time_extents() const
528 boost::optional<Timestamp> left_time, right_time;
529 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
530 for (const shared_ptr<SignalData> d : visible_data) {
531 const vector< shared_ptr<Segment> > segments = d->segments();
532 for (const shared_ptr<Segment> &s : segments) {
533 double samplerate = s->samplerate();
534 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
536 const Timestamp start_time = s->start_time();
537 left_time = left_time ?
538 min(*left_time, start_time) :
540 right_time = right_time ?
541 max(*right_time, start_time + d->max_sample_count() / samplerate) :
542 start_time + d->max_sample_count() / samplerate;
546 if (!left_time || !right_time)
547 return make_pair(0, 0);
549 assert(*left_time < *right_time);
550 return make_pair(*left_time, *right_time);
553 void View::enable_show_sampling_points(bool state)
560 void View::enable_show_analog_minor_grid(bool state)
567 void View::enable_coloured_bg(bool state)
569 coloured_bg_ = state;
573 bool View::coloured_bg() const
578 bool View::cursors_shown() const
580 return show_cursors_;
583 void View::show_cursors(bool show)
585 show_cursors_ = show;
590 void View::centre_cursors()
592 const double time_width = scale_ * viewport_->width();
593 cursors_->first()->set_time(offset_ + time_width * 0.4);
594 cursors_->second()->set_time(offset_ + time_width * 0.6);
599 shared_ptr<CursorPair> View::cursors() const
604 void View::add_flag(const Timestamp& time)
606 flags_.push_back(make_shared<Flag>(*this, time,
607 QString("%1").arg(next_flag_text_)));
609 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
610 (next_flag_text_ + 1);
612 time_item_appearance_changed(true, true);
615 void View::remove_flag(shared_ptr<Flag> flag)
618 time_item_appearance_changed(true, true);
621 vector< shared_ptr<Flag> > View::flags() const
623 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
624 stable_sort(flags.begin(), flags.end(),
625 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
626 return a->time() < b->time();
632 const QPoint& View::hover_point() const
637 void View::restack_all_trace_tree_items()
639 // Make a list of owners that is sorted from deepest first
640 const vector<shared_ptr<TraceTreeItem>> items(
641 list_by_type<TraceTreeItem>());
642 set< TraceTreeItemOwner* > owners;
643 for (const auto &r : items)
644 owners.insert(r->owner());
645 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
646 sort(sorted_owners.begin(), sorted_owners.end(),
647 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
648 return a->depth() > b->depth(); });
650 // Restack the items recursively
651 for (auto &o : sorted_owners)
654 // Animate the items to their destination
655 for (const auto &i : items)
656 i->animate_to_layout_v_offset();
659 void View::trigger_event(util::Timestamp location)
661 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
664 void View::get_scroll_layout(double &length, Timestamp &offset) const
666 const pair<Timestamp, Timestamp> extents = get_time_extents();
667 length = ((extents.second - extents.first) / scale_).convert_to<double>();
668 offset = offset_ / scale_;
671 void View::set_zoom(double scale, int offset)
673 // Reset the "always zoom to fit" feature as the user changed the zoom
674 always_zoom_to_fit_ = false;
675 always_zoom_to_fit_changed(false);
677 const Timestamp cursor_offset = offset_ + scale_ * offset;
678 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
679 const Timestamp new_offset = cursor_offset - new_scale * offset;
680 set_scale_offset(new_scale.convert_to<double>(), new_offset);
683 void View::calculate_tick_spacing()
685 const double SpacingIncrement = 10.0f;
686 const double MinValueSpacing = 40.0f;
688 // Figure out the highest numeric value visible on a label
689 const QSize areaSize = viewport_->size();
690 const Timestamp max_time = max(fabs(offset_),
691 fabs(offset_ + scale_ * areaSize.width()));
693 double min_width = SpacingIncrement;
694 double label_width, tick_period_width;
696 QFontMetrics m(QApplication::font());
698 // Copies of the member variables with the same name, used in the calculation
699 // and written back afterwards, so that we don't emit signals all the time
700 // during the calculation.
701 pv::util::Timestamp tick_period = tick_period_;
702 pv::util::SIPrefix tick_prefix = tick_prefix_;
703 unsigned tick_precision = tick_precision_;
706 const double min_period = scale_ * min_width;
708 const int order = (int)floorf(log10f(min_period));
709 const pv::util::Timestamp order_decimal =
710 pow(pv::util::Timestamp(10), order);
712 // Allow for a margin of error so that a scale unit of 1 can be used.
713 // Otherwise, for a SU of 1 the tick period will almost always be below
714 // the min_period by a small amount - and thus skipped in favor of 2.
715 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
716 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
717 double tp_with_margin;
718 unsigned int unit = 0;
721 tp_with_margin = order_decimal.convert_to<double>() *
722 (ScaleUnits[unit++] + tp_margin);
723 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
725 tick_period = order_decimal * ScaleUnits[unit - 1];
726 tick_prefix = static_cast<pv::util::SIPrefix>(
727 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
729 // Precision is the number of fractional digits required, not
730 // taking the prefix into account (and it must never be negative)
731 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
733 tick_period_width = (tick_period / scale_).convert_to<double>();
735 const QString label_text = Ruler::format_time_with_distance(
736 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
738 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
739 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
742 min_width += SpacingIncrement;
743 } while (tick_period_width < label_width);
745 set_tick_period(tick_period);
746 set_tick_prefix(tick_prefix);
747 set_tick_precision(tick_precision);
750 void View::update_scroll()
753 QScrollBar *hscrollbar = scrollarea_.horizontalScrollBar();
754 QScrollBar *vscrollbar = scrollarea_.verticalScrollBar();
756 const QSize areaSize = viewport_->size();
758 // Set the horizontal scroll bar
761 get_scroll_layout(length, offset);
762 length = max(length - areaSize.width(), 0.0);
764 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
766 hscrollbar->setPageStep(areaSize.width() / 2);
767 hscrollbar->setSingleStep(major_tick_distance);
769 updating_scroll_ = true;
771 if (length < MaxScrollValue) {
772 hscrollbar->setRange(0, length);
773 hscrollbar->setSliderPosition(offset.convert_to<double>());
775 hscrollbar->setRange(0, MaxScrollValue);
776 hscrollbar->setSliderPosition(
777 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
780 updating_scroll_ = false;
782 // Set the vertical scrollbar
783 vscrollbar->setPageStep(areaSize.height());
784 vscrollbar->setSingleStep(areaSize.height() / 8);
786 const pair<int, int> extents = v_extents();
788 // Don't change the scrollbar range if there are no traces
789 if (extents.first != extents.second)
790 vscrollbar->setRange(extents.first - areaSize.height(),
793 if (scroll_needs_defaults_)
794 set_scroll_default();
797 void View::reset_scroll()
799 scrollarea_.verticalScrollBar()->setRange(0, 0);
802 void View::set_scroll_default()
806 const QSize areaSize = viewport_->size();
808 const pair<int, int> extents = v_extents();
809 const int trace_height = extents.second - extents.first;
811 // Do all traces fit in the view?
812 if (areaSize.height() >= trace_height)
813 // Center all traces vertically
814 set_v_offset(extents.first -
815 ((areaSize.height() - trace_height) / 2));
817 // Put the first trace at the top, letting the bottom ones overflow
818 set_v_offset(extents.first);
820 // If we're not sure whether setting the defaults worked as
821 // the window wasn't set up entirely yet, we want to be called
822 // again later to make sure
823 scroll_needs_defaults_ = !size_finalized_;
826 void View::update_layout()
828 scrollarea_.setViewportMargins(
829 header_->sizeHint().width() - Header::BaselineOffset,
830 ruler_->sizeHint().height(), 0, 0);
831 ruler_->setGeometry(viewport_->x(), 0,
832 viewport_->width(), ruler_->extended_size_hint().height());
833 header_->setGeometry(0, viewport_->y(),
834 header_->extended_size_hint().width(), viewport_->height());
838 TraceTreeItemOwner* View::find_prevalent_trace_group(
839 const shared_ptr<sigrok::ChannelGroup> &group,
840 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
845 unordered_set<TraceTreeItemOwner*> owners;
846 vector<TraceTreeItemOwner*> owner_list;
848 // Make a set and a list of all the owners
849 for (const auto &channel : group->channels()) {
850 for (auto entry : signal_map) {
851 if (entry.first->channel() == channel) {
852 TraceTreeItemOwner *const o = (entry.second)->owner();
853 owner_list.push_back(o);
859 // Iterate through the list of owners, and find the most prevalent
860 size_t max_prevalence = 0;
861 TraceTreeItemOwner *prevalent_owner = nullptr;
862 for (TraceTreeItemOwner *owner : owners) {
863 const size_t prevalence = count_if(
864 owner_list.begin(), owner_list.end(),
865 [&](TraceTreeItemOwner *o) { return o == owner; });
866 if (prevalence > max_prevalence) {
867 max_prevalence = prevalence;
868 prevalent_owner = owner;
872 return prevalent_owner;
875 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
876 const vector< shared_ptr<sigrok::Channel> > &channels,
877 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
879 set< shared_ptr<Trace> > &add_list)
881 vector< shared_ptr<Trace> > filtered_traces;
883 for (const auto &channel : channels) {
884 for (auto entry : signal_map) {
885 if (entry.first->channel() == channel) {
886 shared_ptr<Trace> trace = entry.second;
887 const auto list_iter = add_list.find(trace);
888 if (list_iter == add_list.end())
891 filtered_traces.push_back(trace);
892 add_list.erase(list_iter);
897 return filtered_traces;
900 void View::determine_time_unit()
902 // Check whether we know the sample rate and hence can use time as the unit
903 if (time_unit_ == util::TimeUnit::Samples) {
904 // Check all signals but...
905 for (const shared_ptr<Signal> signal : signals_) {
906 const shared_ptr<SignalData> data = signal->data();
908 // ...only check first segment of each
909 const vector< shared_ptr<Segment> > segments = data->segments();
910 if (!segments.empty())
911 if (segments[0]->samplerate()) {
912 set_time_unit(util::TimeUnit::Time);
919 bool View::eventFilter(QObject *object, QEvent *event)
921 const QEvent::Type type = event->type();
922 if (type == QEvent::MouseMove) {
924 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
925 if (object == viewport_)
926 hover_point_ = mouse_event->pos();
927 else if (object == ruler_)
928 hover_point_ = QPoint(mouse_event->x(), 0);
929 else if (object == header_)
930 hover_point_ = QPoint(0, mouse_event->y());
932 hover_point_ = QPoint(-1, -1);
934 hover_point_changed();
936 } else if (type == QEvent::Leave) {
937 hover_point_ = QPoint(-1, -1);
938 hover_point_changed();
941 return QObject::eventFilter(object, event);
944 void View::resizeEvent(QResizeEvent*)
948 // This is somewhat of a hack, unfortunately. We cannot use
949 // set_v_offset() from within restore_settings() as the view
950 // at that point is neither visible nor properly sized.
951 // This is the least intrusive workaround I could come up
952 // with: set the vertical offset (or scroll defaults) when
953 // the view is visible and resized to its final size.
954 // Resize events that are sent when the view is not visible
955 // must be ignored as they have wrong sizes, potentially
956 // preventing the v offset from being set successfully.
959 size_finalized_ = true;
961 if (size_finalized_ && saved_v_offset_) {
962 set_v_offset(saved_v_offset_);
966 if (size_finalized_ && scroll_needs_defaults_)
967 set_scroll_default();
970 void View::row_item_appearance_changed(bool label, bool content)
978 void View::time_item_appearance_changed(bool label, bool content)
986 void View::extents_changed(bool horz, bool vert)
989 (horz ? TraceTreeItemHExtentsChanged : 0) |
990 (vert ? TraceTreeItemVExtentsChanged : 0);
992 lazy_event_handler_.start();
995 void View::h_scroll_value_changed(int value)
997 if (updating_scroll_)
1000 // Disable sticky scrolling when user moves the horizontal scroll bar
1001 // during a running acquisition
1002 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1003 sticky_scrolling_ = false;
1004 sticky_scrolling_changed(false);
1007 const int range = scrollarea_.horizontalScrollBar()->maximum();
1008 if (range < MaxScrollValue)
1009 set_offset(scale_ * value);
1013 get_scroll_layout(length, offset);
1014 set_offset(scale_ * length * value / MaxScrollValue);
1018 viewport_->update();
1021 void View::v_scroll_value_changed()
1024 viewport_->update();
1027 void View::signals_changed()
1029 using sigrok::Channel;
1031 vector< shared_ptr<Channel> > channels;
1032 shared_ptr<sigrok::Device> sr_dev;
1034 // Do we need to set the vertical scrollbar to its default position later?
1035 // We do if there are no traces, i.e. the scroll bar has no range set
1036 bool reset_scrollbar =
1037 (scrollarea_.verticalScrollBar()->minimum() ==
1038 scrollarea_.verticalScrollBar()->maximum());
1040 if (!session_.device()) {
1044 sr_dev = session_.device()->device();
1046 channels = sr_dev->channels();
1049 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1051 // Make a list of traces that are being added, and a list of traces
1052 // that are being removed
1053 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1054 const set<shared_ptr<Trace>> prev_traces(
1055 prev_trace_list.begin(), prev_trace_list.end());
1057 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1059 #ifdef ENABLE_DECODE
1060 traces.insert(decode_traces_.begin(), decode_traces_.end());
1063 set< shared_ptr<Trace> > add_traces;
1064 set_difference(traces.begin(), traces.end(),
1065 prev_traces.begin(), prev_traces.end(),
1066 inserter(add_traces, add_traces.begin()));
1068 set< shared_ptr<Trace> > remove_traces;
1069 set_difference(prev_traces.begin(), prev_traces.end(),
1070 traces.begin(), traces.end(),
1071 inserter(remove_traces, remove_traces.begin()));
1073 // Make a look-up table of sigrok Channels to pulseview Signals
1074 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1076 for (const shared_ptr<Signal> &sig : signals_)
1077 signal_map[sig->base()] = sig;
1079 // Populate channel groups
1081 for (auto entry : sr_dev->channel_groups()) {
1082 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1084 if (group->channels().size() <= 1)
1087 // Find best trace group to add to
1088 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1091 // If there is no trace group, create one
1092 shared_ptr<TraceGroup> new_trace_group;
1094 new_trace_group.reset(new TraceGroup());
1095 owner = new_trace_group.get();
1098 // Extract traces for the trace group, removing them from
1100 const vector< shared_ptr<Trace> > new_traces_in_group =
1101 extract_new_traces_for_channels(group->channels(),
1102 signal_map, add_traces);
1104 // Add the traces to the group
1105 const pair<int, int> prev_v_extents = owner->v_extents();
1106 int offset = prev_v_extents.second - prev_v_extents.first;
1107 for (shared_ptr<Trace> trace : new_traces_in_group) {
1109 owner->add_child_item(trace);
1111 const pair<int, int> extents = trace->v_extents();
1112 if (trace->enabled())
1113 offset += -extents.first;
1114 trace->force_to_v_offset(offset);
1115 if (trace->enabled())
1116 offset += extents.second;
1119 if (new_trace_group) {
1120 // Assign proper vertical offsets to each channel in the group
1121 new_trace_group->restack_items();
1123 // If this is a new group, enqueue it in the new top level
1125 if (!new_traces_in_group.empty())
1126 new_top_level_items.push_back(new_trace_group);
1130 // Enqueue the remaining logic channels in a group
1131 vector< shared_ptr<Channel> > logic_channels;
1132 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1133 [](const shared_ptr<Channel>& c) {
1134 return c->type() == sigrok::ChannelType::LOGIC; });
1136 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1137 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1139 if (non_grouped_logic_signals.size() > 0) {
1140 const shared_ptr<TraceGroup> non_grouped_trace_group(
1141 make_shared<TraceGroup>());
1142 for (shared_ptr<Trace> trace : non_grouped_logic_signals)
1143 non_grouped_trace_group->add_child_item(trace);
1145 non_grouped_trace_group->restack_items();
1146 new_top_level_items.push_back(non_grouped_trace_group);
1149 // Enqueue the remaining channels as free ungrouped traces
1150 const vector< shared_ptr<Trace> > new_top_level_signals =
1151 extract_new_traces_for_channels(channels, signal_map, add_traces);
1152 new_top_level_items.insert(new_top_level_items.end(),
1153 new_top_level_signals.begin(), new_top_level_signals.end());
1155 // Enqueue any remaining traces i.e. decode traces
1156 new_top_level_items.insert(new_top_level_items.end(),
1157 add_traces.begin(), add_traces.end());
1159 // Remove any removed traces
1160 for (shared_ptr<Trace> trace : remove_traces) {
1161 TraceTreeItemOwner *const owner = trace->owner();
1163 owner->remove_child_item(trace);
1166 // Remove any empty trace groups
1167 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1168 if (group->child_items().size() == 0) {
1169 remove_child_item(group);
1173 // Add and position the pending top levels items
1174 int offset = v_extents().second;
1175 for (auto item : new_top_level_items) {
1176 add_child_item(item);
1178 // Position the item after the last item or at the top if there is none
1179 const pair<int, int> extents = item->v_extents();
1181 if (item->enabled())
1182 offset += -extents.first;
1184 item->force_to_v_offset(offset);
1186 if (item->enabled())
1187 offset += extents.second;
1193 viewport_->update();
1195 if (reset_scrollbar)
1196 set_scroll_default();
1199 void View::capture_state_updated(int state)
1201 if (state == Session::Running) {
1202 set_time_unit(util::TimeUnit::Samples);
1204 trigger_markers_.clear();
1206 // Activate "always zoom to fit" if the setting is enabled and we're
1207 // the main view of this session (other trace views may be used for
1208 // zooming and we don't want to mess them up)
1209 GlobalSettings settings;
1210 bool state = settings.value(GlobalSettings::Key_View_AlwaysZoomToFit).toBool();
1211 if (is_main_view_ && state) {
1212 always_zoom_to_fit_ = true;
1213 always_zoom_to_fit_changed(always_zoom_to_fit_);
1216 // Enable sticky scrolling if the setting is enabled
1217 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
1220 if (state == Session::Stopped) {
1221 // After acquisition has stopped we need to re-calculate the ticks once
1222 // as it's otherwise done when the user pans or zooms, which is too late
1223 calculate_tick_spacing();
1225 // Reset "always zoom to fit", the acquisition has stopped
1226 if (always_zoom_to_fit_) {
1227 // Perform a final zoom-to-fit before disabling
1228 zoom_fit(always_zoom_to_fit_);
1229 always_zoom_to_fit_ = false;
1230 always_zoom_to_fit_changed(always_zoom_to_fit_);
1235 void View::perform_delayed_view_update()
1237 if (always_zoom_to_fit_) {
1239 } else if (sticky_scrolling_) {
1240 // Make right side of the view sticky
1243 get_scroll_layout(length, offset);
1245 const QSize areaSize = viewport_->size();
1246 length = max(length - areaSize.width(), 0.0);
1248 set_offset(scale_ * length);
1251 determine_time_unit();
1254 viewport_->update();
1257 void View::process_sticky_events()
1259 if (sticky_events_ & TraceTreeItemHExtentsChanged)
1261 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
1262 restack_all_trace_tree_items();
1266 // Clear the sticky events
1270 void View::on_hover_point_changed()
1272 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1273 list_by_type<TraceTreeItem>());
1274 for (shared_ptr<TraceTreeItem> r : trace_tree_items)
1275 r->hover_point_changed();
1278 } // namespace TraceView
1279 } // namespace views