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;
99 const int View::MaxViewAutoUpdateRate = 25; // No more than 25 Hz with sticky scrolling
101 const int View::ScaleUnits[3] = {1, 2, 5};
104 CustomAbstractScrollArea::CustomAbstractScrollArea(QWidget *parent) :
105 QAbstractScrollArea(parent)
109 void CustomAbstractScrollArea::setViewportMargins(int left, int top, int right, int bottom)
111 QAbstractScrollArea::setViewportMargins(left, top, right, bottom);
114 bool CustomAbstractScrollArea::viewportEvent(QEvent *event)
116 switch (event->type()) {
118 case QEvent::MouseButtonPress:
119 case QEvent::MouseButtonRelease:
120 case QEvent::MouseButtonDblClick:
121 case QEvent::MouseMove:
123 case QEvent::TouchBegin:
124 case QEvent::TouchUpdate:
125 case QEvent::TouchEnd:
128 return QAbstractScrollArea::viewportEvent(event);
132 View::View(Session &session, bool is_main_view, QWidget *parent) :
133 ViewBase(session, is_main_view, parent),
134 viewport_(new Viewport(*this)),
135 ruler_(new Ruler(*this)),
136 header_(new Header(*this)),
140 updating_scroll_(false),
141 sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui()
142 always_zoom_to_fit_(false),
144 tick_prefix_(pv::util::SIPrefix::yocto),
146 time_unit_(util::TimeUnit::Time),
147 show_cursors_(false),
148 cursors_(new CursorPair(*this)),
149 next_flag_text_('A'),
151 hover_point_(-1, -1),
152 scroll_needs_defaults_(false),
154 size_finalized_(false)
156 GlobalSettings settings;
157 coloured_bg_ = settings.value(GlobalSettings::Key_View_ColouredBG).toBool();
159 connect(scrollarea_.horizontalScrollBar(), SIGNAL(valueChanged(int)),
160 this, SLOT(h_scroll_value_changed(int)));
161 connect(scrollarea_.verticalScrollBar(), SIGNAL(valueChanged(int)),
162 this, SLOT(v_scroll_value_changed()));
164 connect(header_, SIGNAL(selection_changed()),
165 ruler_, SLOT(clear_selection()));
166 connect(ruler_, SIGNAL(selection_changed()),
167 header_, SLOT(clear_selection()));
169 connect(header_, SIGNAL(selection_changed()),
170 this, SIGNAL(selection_changed()));
171 connect(ruler_, SIGNAL(selection_changed()),
172 this, SIGNAL(selection_changed()));
174 connect(this, SIGNAL(hover_point_changed()),
175 this, SLOT(on_hover_point_changed()));
177 connect(&lazy_event_handler_, SIGNAL(timeout()),
178 this, SLOT(process_sticky_events()));
179 lazy_event_handler_.setSingleShot(true);
181 connect(&delayed_view_updater_, SIGNAL(timeout()),
182 this, SLOT(perform_delayed_view_update()));
183 delayed_view_updater_.setSingleShot(true);
184 delayed_view_updater_.setInterval(1000 / MaxViewAutoUpdateRate);
186 /* To let the scroll area fill up the parent QWidget (this), we need a layout */
187 QHBoxLayout *layout = new QHBoxLayout(this);
189 layout->setContentsMargins(0, 0, 0, 0);
190 layout->addWidget(&scrollarea_);
192 scrollarea_.setViewport(viewport_);
194 viewport_->installEventFilter(this);
195 ruler_->installEventFilter(this);
196 header_->installEventFilter(this);
198 // Trigger the initial event manually. The default device has signals
199 // which were created before this object came into being
202 // make sure the transparent widgets are on the top
206 // Update the zoom state
207 calculate_tick_spacing();
210 Session& View::session()
215 const Session& View::session() const
220 unordered_set< shared_ptr<Signal> > View::signals() const
225 void View::clear_signals()
230 void View::add_signal(const shared_ptr<Signal> signal)
232 signals_.insert(signal);
236 void View::clear_decode_signals()
238 decode_traces_.clear();
241 void View::add_decode_signal(shared_ptr<data::SignalBase> signalbase)
243 shared_ptr<DecodeTrace> d(
244 new DecodeTrace(session_, signalbase, decode_traces_.size()));
245 decode_traces_.push_back(d);
248 void View::remove_decode_signal(shared_ptr<data::SignalBase> signalbase)
250 for (auto i = decode_traces_.begin(); i != decode_traces_.end(); i++)
251 if ((*i)->base() == signalbase) {
252 decode_traces_.erase(i);
264 const View* View::view() const
269 Viewport* View::viewport()
274 const Viewport* View::viewport() const
279 void View::save_settings(QSettings &settings) const
281 settings.setValue("scale", scale_);
282 settings.setValue("v_offset",
283 scrollarea_.verticalScrollBar()->sliderPosition());
286 boost::archive::text_oarchive oa(ss);
287 oa << boost::serialization::make_nvp("offset", offset_);
288 settings.setValue("offset", QString::fromStdString(ss.str()));
290 for (shared_ptr<Signal> signal : signals_) {
291 settings.beginGroup(signal->base()->internal_name());
292 signal->save_settings(settings);
297 void View::restore_settings(QSettings &settings)
299 // Note: It is assumed that this function is only called once,
300 // immediately after restoring a previous session.
302 if (settings.contains("scale"))
303 set_scale(settings.value("scale").toDouble());
305 if (settings.contains("offset")) {
306 util::Timestamp offset;
308 ss << settings.value("offset").toString().toStdString();
310 boost::archive::text_iarchive ia(ss);
311 ia >> boost::serialization::make_nvp("offset", offset);
316 for (shared_ptr<Signal> signal : signals_) {
317 settings.beginGroup(signal->base()->internal_name());
318 signal->restore_settings(settings);
322 if (settings.contains("v_offset")) {
323 saved_v_offset_ = settings.value("v_offset").toInt();
324 set_v_offset(saved_v_offset_);
325 scroll_needs_defaults_ = false;
326 // Note: see resizeEvent() for additional information
330 vector< shared_ptr<TimeItem> > View::time_items() const
332 const vector<shared_ptr<Flag>> f(flags());
333 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
334 items.push_back(cursors_);
335 items.push_back(cursors_->first());
336 items.push_back(cursors_->second());
338 for (auto trigger_marker : trigger_markers_)
339 items.push_back(trigger_marker);
344 double View::scale() const
349 void View::set_scale(double scale)
351 if (scale_ != scale) {
353 Q_EMIT scale_changed();
357 const Timestamp& View::offset() const
362 void View::set_offset(const pv::util::Timestamp& offset)
364 if (offset_ != offset) {
366 Q_EMIT offset_changed();
370 int View::owner_visual_v_offset() const
372 return -scrollarea_.verticalScrollBar()->sliderPosition();
375 void View::set_v_offset(int offset)
377 scrollarea_.verticalScrollBar()->setSliderPosition(offset);
382 unsigned int View::depth() const
387 pv::util::SIPrefix View::tick_prefix() const
392 void View::set_tick_prefix(pv::util::SIPrefix tick_prefix)
394 if (tick_prefix_ != tick_prefix) {
395 tick_prefix_ = tick_prefix;
396 Q_EMIT tick_prefix_changed();
400 unsigned int View::tick_precision() const
402 return tick_precision_;
405 void View::set_tick_precision(unsigned tick_precision)
407 if (tick_precision_ != tick_precision) {
408 tick_precision_ = tick_precision;
409 Q_EMIT tick_precision_changed();
413 const pv::util::Timestamp& View::tick_period() const
418 void View::set_tick_period(const pv::util::Timestamp& tick_period)
420 if (tick_period_ != tick_period) {
421 tick_period_ = tick_period;
422 Q_EMIT tick_period_changed();
426 TimeUnit View::time_unit() const
431 void View::set_time_unit(pv::util::TimeUnit time_unit)
433 if (time_unit_ != time_unit) {
434 time_unit_ = time_unit;
435 Q_EMIT time_unit_changed();
439 void View::zoom(double steps)
441 zoom(steps, viewport_->width() / 2);
444 void View::zoom(double steps, int offset)
446 set_zoom(scale_ * pow(3.0 / 2.0, -steps), offset);
449 void View::zoom_fit(bool gui_state)
451 // Act as one-shot when stopped, toggle along with the GUI otherwise
452 if (session_.get_capture_state() == Session::Stopped) {
453 always_zoom_to_fit_ = false;
454 always_zoom_to_fit_changed(false);
456 always_zoom_to_fit_ = gui_state;
457 always_zoom_to_fit_changed(gui_state);
460 const pair<Timestamp, Timestamp> extents = get_time_extents();
461 const Timestamp delta = extents.second - extents.first;
462 if (delta < Timestamp("1e-12"))
466 const int w = viewport_->width();
470 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
471 set_scale_offset(scale.convert_to<double>(), extents.first);
474 void View::zoom_one_to_one()
476 using pv::data::SignalData;
478 // Make a set of all the visible data objects
479 set< shared_ptr<SignalData> > visible_data = get_visible_data();
480 if (visible_data.empty())
484 const int w = viewport_->width();
488 set_zoom(1.0 / session_.get_samplerate(), w / 2);
491 void View::set_scale_offset(double scale, const Timestamp& offset)
493 // Disable sticky scrolling / always zoom to fit when acquisition runs
494 // and user drags the viewport
495 if ((scale_ == scale) && (offset_ != offset) &&
496 (session_.get_capture_state() == Session::Running)) {
498 if (sticky_scrolling_) {
499 sticky_scrolling_ = false;
500 sticky_scrolling_changed(false);
503 if (always_zoom_to_fit_) {
504 always_zoom_to_fit_ = false;
505 always_zoom_to_fit_changed(false);
512 calculate_tick_spacing();
519 set< shared_ptr<SignalData> > View::get_visible_data() const
521 // Make a set of all the visible data objects
522 set< shared_ptr<SignalData> > visible_data;
523 for (const shared_ptr<Signal> sig : signals_)
525 visible_data.insert(sig->data());
530 pair<Timestamp, Timestamp> View::get_time_extents() const
532 boost::optional<Timestamp> left_time, right_time;
533 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
534 for (const shared_ptr<SignalData> d : visible_data) {
535 const vector< shared_ptr<Segment> > segments = d->segments();
536 for (const shared_ptr<Segment> &s : segments) {
537 double samplerate = s->samplerate();
538 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
540 const Timestamp start_time = s->start_time();
541 left_time = left_time ?
542 min(*left_time, start_time) :
544 right_time = right_time ?
545 max(*right_time, start_time + d->max_sample_count() / samplerate) :
546 start_time + d->max_sample_count() / samplerate;
550 if (!left_time || !right_time)
551 return make_pair(0, 0);
553 assert(*left_time < *right_time);
554 return make_pair(*left_time, *right_time);
557 void View::enable_show_sampling_points(bool state)
564 void View::enable_show_analog_minor_grid(bool state)
571 void View::enable_coloured_bg(bool state)
573 coloured_bg_ = state;
577 bool View::coloured_bg() const
582 bool View::cursors_shown() const
584 return show_cursors_;
587 void View::show_cursors(bool show)
589 show_cursors_ = show;
594 void View::centre_cursors()
596 const double time_width = scale_ * viewport_->width();
597 cursors_->first()->set_time(offset_ + time_width * 0.4);
598 cursors_->second()->set_time(offset_ + time_width * 0.6);
603 shared_ptr<CursorPair> View::cursors() const
608 void View::add_flag(const Timestamp& time)
610 flags_.push_back(make_shared<Flag>(*this, time,
611 QString("%1").arg(next_flag_text_)));
613 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
614 (next_flag_text_ + 1);
616 time_item_appearance_changed(true, true);
619 void View::remove_flag(shared_ptr<Flag> flag)
622 time_item_appearance_changed(true, true);
625 vector< shared_ptr<Flag> > View::flags() const
627 vector< shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
628 stable_sort(flags.begin(), flags.end(),
629 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
630 return a->time() < b->time();
636 const QPoint& View::hover_point() const
641 void View::restack_all_trace_tree_items()
643 // Make a list of owners that is sorted from deepest first
644 const vector<shared_ptr<TraceTreeItem>> items(
645 list_by_type<TraceTreeItem>());
646 set< TraceTreeItemOwner* > owners;
647 for (const auto &r : items)
648 owners.insert(r->owner());
649 vector< TraceTreeItemOwner* > sorted_owners(owners.begin(), owners.end());
650 sort(sorted_owners.begin(), sorted_owners.end(),
651 [](const TraceTreeItemOwner* a, const TraceTreeItemOwner *b) {
652 return a->depth() > b->depth(); });
654 // Restack the items recursively
655 for (auto &o : sorted_owners)
658 // Animate the items to their destination
659 for (const auto &i : items)
660 i->animate_to_layout_v_offset();
663 void View::trigger_event(util::Timestamp location)
665 trigger_markers_.push_back(make_shared<TriggerMarker>(*this, location));
668 void View::get_scroll_layout(double &length, Timestamp &offset) const
670 const pair<Timestamp, Timestamp> extents = get_time_extents();
671 length = ((extents.second - extents.first) / scale_).convert_to<double>();
672 offset = offset_ / scale_;
675 void View::set_zoom(double scale, int offset)
677 // Reset the "always zoom to fit" feature as the user changed the zoom
678 always_zoom_to_fit_ = false;
679 always_zoom_to_fit_changed(false);
681 const Timestamp cursor_offset = offset_ + scale_ * offset;
682 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
683 const Timestamp new_offset = cursor_offset - new_scale * offset;
684 set_scale_offset(new_scale.convert_to<double>(), new_offset);
687 void View::calculate_tick_spacing()
689 const double SpacingIncrement = 10.0f;
690 const double MinValueSpacing = 40.0f;
692 // Figure out the highest numeric value visible on a label
693 const QSize areaSize = viewport_->size();
694 const Timestamp max_time = max(fabs(offset_),
695 fabs(offset_ + scale_ * areaSize.width()));
697 double min_width = SpacingIncrement;
698 double label_width, tick_period_width;
700 QFontMetrics m(QApplication::font());
702 // Copies of the member variables with the same name, used in the calculation
703 // and written back afterwards, so that we don't emit signals all the time
704 // during the calculation.
705 pv::util::Timestamp tick_period = tick_period_;
706 pv::util::SIPrefix tick_prefix = tick_prefix_;
707 unsigned tick_precision = tick_precision_;
710 const double min_period = scale_ * min_width;
712 const int order = (int)floorf(log10f(min_period));
713 const pv::util::Timestamp order_decimal =
714 pow(pv::util::Timestamp(10), order);
716 // Allow for a margin of error so that a scale unit of 1 can be used.
717 // Otherwise, for a SU of 1 the tick period will almost always be below
718 // the min_period by a small amount - and thus skipped in favor of 2.
719 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
720 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
721 double tp_with_margin;
722 unsigned int unit = 0;
725 tp_with_margin = order_decimal.convert_to<double>() *
726 (ScaleUnits[unit++] + tp_margin);
727 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
729 tick_period = order_decimal * ScaleUnits[unit - 1];
730 tick_prefix = static_cast<pv::util::SIPrefix>(
731 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
733 // Precision is the number of fractional digits required, not
734 // taking the prefix into account (and it must never be negative)
735 tick_precision = max(ceil(log10(1 / tick_period)).convert_to<int>(), 0);
737 tick_period_width = (tick_period / scale_).convert_to<double>();
739 const QString label_text = Ruler::format_time_with_distance(
740 tick_period, max_time, tick_prefix, time_unit_, tick_precision);
742 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
743 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
746 min_width += SpacingIncrement;
747 } while (tick_period_width < label_width);
749 set_tick_period(tick_period);
750 set_tick_prefix(tick_prefix);
751 set_tick_precision(tick_precision);
754 void View::update_scroll()
757 QScrollBar *hscrollbar = scrollarea_.horizontalScrollBar();
758 QScrollBar *vscrollbar = scrollarea_.verticalScrollBar();
760 const QSize areaSize = viewport_->size();
762 // Set the horizontal scroll bar
765 get_scroll_layout(length, offset);
766 length = max(length - areaSize.width(), 0.0);
768 int major_tick_distance = (tick_period_ / scale_).convert_to<int>();
770 hscrollbar->setPageStep(areaSize.width() / 2);
771 hscrollbar->setSingleStep(major_tick_distance);
773 updating_scroll_ = true;
775 if (length < MaxScrollValue) {
776 hscrollbar->setRange(0, length);
777 hscrollbar->setSliderPosition(offset.convert_to<double>());
779 hscrollbar->setRange(0, MaxScrollValue);
780 hscrollbar->setSliderPosition(
781 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
784 updating_scroll_ = false;
786 // Set the vertical scrollbar
787 vscrollbar->setPageStep(areaSize.height());
788 vscrollbar->setSingleStep(areaSize.height() / 8);
790 const pair<int, int> extents = v_extents();
792 // Don't change the scrollbar range if there are no traces
793 if (extents.first != extents.second)
794 vscrollbar->setRange(extents.first - areaSize.height(),
797 if (scroll_needs_defaults_)
798 set_scroll_default();
801 void View::reset_scroll()
803 scrollarea_.verticalScrollBar()->setRange(0, 0);
806 void View::set_scroll_default()
810 const QSize areaSize = viewport_->size();
812 const pair<int, int> extents = v_extents();
813 const int trace_height = extents.second - extents.first;
815 // Do all traces fit in the view?
816 if (areaSize.height() >= trace_height)
817 // Center all traces vertically
818 set_v_offset(extents.first -
819 ((areaSize.height() - trace_height) / 2));
821 // Put the first trace at the top, letting the bottom ones overflow
822 set_v_offset(extents.first);
824 // If we're not sure whether setting the defaults worked as
825 // the window wasn't set up entirely yet, we want to be called
826 // again later to make sure
827 scroll_needs_defaults_ = !size_finalized_;
830 void View::update_layout()
832 scrollarea_.setViewportMargins(
833 header_->sizeHint().width() - Header::BaselineOffset,
834 ruler_->sizeHint().height(), 0, 0);
835 ruler_->setGeometry(viewport_->x(), 0,
836 viewport_->width(), ruler_->extended_size_hint().height());
837 header_->setGeometry(0, viewport_->y(),
838 header_->extended_size_hint().width(), viewport_->height());
842 TraceTreeItemOwner* View::find_prevalent_trace_group(
843 const shared_ptr<sigrok::ChannelGroup> &group,
844 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
849 unordered_set<TraceTreeItemOwner*> owners;
850 vector<TraceTreeItemOwner*> owner_list;
852 // Make a set and a list of all the owners
853 for (const auto &channel : group->channels()) {
854 for (auto entry : signal_map) {
855 if (entry.first->channel() == channel) {
856 TraceTreeItemOwner *const o = (entry.second)->owner();
857 owner_list.push_back(o);
863 // Iterate through the list of owners, and find the most prevalent
864 size_t max_prevalence = 0;
865 TraceTreeItemOwner *prevalent_owner = nullptr;
866 for (TraceTreeItemOwner *owner : owners) {
867 const size_t prevalence = count_if(
868 owner_list.begin(), owner_list.end(),
869 [&](TraceTreeItemOwner *o) { return o == owner; });
870 if (prevalence > max_prevalence) {
871 max_prevalence = prevalence;
872 prevalent_owner = owner;
876 return prevalent_owner;
879 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
880 const vector< shared_ptr<sigrok::Channel> > &channels,
881 const unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
883 set< shared_ptr<Trace> > &add_list)
885 vector< shared_ptr<Trace> > filtered_traces;
887 for (const auto &channel : channels) {
888 for (auto entry : signal_map) {
889 if (entry.first->channel() == channel) {
890 shared_ptr<Trace> trace = entry.second;
891 const auto list_iter = add_list.find(trace);
892 if (list_iter == add_list.end())
895 filtered_traces.push_back(trace);
896 add_list.erase(list_iter);
901 return filtered_traces;
904 void View::determine_time_unit()
906 // Check whether we know the sample rate and hence can use time as the unit
907 if (time_unit_ == util::TimeUnit::Samples) {
908 // Check all signals but...
909 for (const shared_ptr<Signal> signal : signals_) {
910 const shared_ptr<SignalData> data = signal->data();
912 // ...only check first segment of each
913 const vector< shared_ptr<Segment> > segments = data->segments();
914 if (!segments.empty())
915 if (segments[0]->samplerate()) {
916 set_time_unit(util::TimeUnit::Time);
923 bool View::eventFilter(QObject *object, QEvent *event)
925 const QEvent::Type type = event->type();
926 if (type == QEvent::MouseMove) {
928 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
929 if (object == viewport_)
930 hover_point_ = mouse_event->pos();
931 else if (object == ruler_)
932 hover_point_ = QPoint(mouse_event->x(), 0);
933 else if (object == header_)
934 hover_point_ = QPoint(0, mouse_event->y());
936 hover_point_ = QPoint(-1, -1);
938 hover_point_changed();
940 } else if (type == QEvent::Leave) {
941 hover_point_ = QPoint(-1, -1);
942 hover_point_changed();
945 return QObject::eventFilter(object, event);
948 void View::resizeEvent(QResizeEvent*)
952 // This is somewhat of a hack, unfortunately. We cannot use
953 // set_v_offset() from within restore_settings() as the view
954 // at that point is neither visible nor properly sized.
955 // This is the least intrusive workaround I could come up
956 // with: set the vertical offset (or scroll defaults) when
957 // the view is visible and resized to its final size.
958 // Resize events that are sent when the view is not visible
959 // must be ignored as they have wrong sizes, potentially
960 // preventing the v offset from being set successfully.
963 size_finalized_ = true;
965 if (size_finalized_ && saved_v_offset_) {
966 set_v_offset(saved_v_offset_);
970 if (size_finalized_ && scroll_needs_defaults_)
971 set_scroll_default();
974 void View::row_item_appearance_changed(bool label, bool content)
982 void View::time_item_appearance_changed(bool label, bool content)
990 void View::extents_changed(bool horz, bool vert)
993 (horz ? TraceTreeItemHExtentsChanged : 0) |
994 (vert ? TraceTreeItemVExtentsChanged : 0);
995 lazy_event_handler_.start();
998 void View::h_scroll_value_changed(int value)
1000 if (updating_scroll_)
1003 // Disable sticky scrolling when user moves the horizontal scroll bar
1004 // during a running acquisition
1005 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
1006 sticky_scrolling_ = false;
1007 sticky_scrolling_changed(false);
1010 const int range = scrollarea_.horizontalScrollBar()->maximum();
1011 if (range < MaxScrollValue)
1012 set_offset(scale_ * value);
1016 get_scroll_layout(length, offset);
1017 set_offset(scale_ * length * value / MaxScrollValue);
1021 viewport_->update();
1024 void View::v_scroll_value_changed()
1027 viewport_->update();
1030 void View::signals_changed()
1032 using sigrok::Channel;
1034 vector< shared_ptr<Channel> > channels;
1035 shared_ptr<sigrok::Device> sr_dev;
1037 // Do we need to set the vertical scrollbar to its default position later?
1038 // We do if there are no traces, i.e. the scroll bar has no range set
1039 bool reset_scrollbar =
1040 (scrollarea_.verticalScrollBar()->minimum() ==
1041 scrollarea_.verticalScrollBar()->maximum());
1043 if (!session_.device()) {
1047 sr_dev = session_.device()->device();
1049 channels = sr_dev->channels();
1052 vector< shared_ptr<TraceTreeItem> > new_top_level_items;
1054 // Make a list of traces that are being added, and a list of traces
1055 // that are being removed
1056 const vector<shared_ptr<Trace>> prev_trace_list = list_by_type<Trace>();
1057 const set<shared_ptr<Trace>> prev_traces(
1058 prev_trace_list.begin(), prev_trace_list.end());
1060 set< shared_ptr<Trace> > traces(signals_.begin(), signals_.end());
1062 #ifdef ENABLE_DECODE
1063 traces.insert(decode_traces_.begin(), decode_traces_.end());
1066 set< shared_ptr<Trace> > add_traces;
1067 set_difference(traces.begin(), traces.end(),
1068 prev_traces.begin(), prev_traces.end(),
1069 inserter(add_traces, add_traces.begin()));
1071 set< shared_ptr<Trace> > remove_traces;
1072 set_difference(prev_traces.begin(), prev_traces.end(),
1073 traces.begin(), traces.end(),
1074 inserter(remove_traces, remove_traces.begin()));
1076 // Make a look-up table of sigrok Channels to pulseview Signals
1077 unordered_map<shared_ptr<data::SignalBase>, shared_ptr<Signal> >
1079 for (const shared_ptr<Signal> &sig : signals_)
1080 signal_map[sig->base()] = sig;
1082 // Populate channel groups
1084 for (auto entry : sr_dev->channel_groups()) {
1085 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
1087 if (group->channels().size() <= 1)
1090 // Find best trace group to add to
1091 TraceTreeItemOwner *owner = find_prevalent_trace_group(
1094 // If there is no trace group, create one
1095 shared_ptr<TraceGroup> new_trace_group;
1097 new_trace_group.reset(new TraceGroup());
1098 owner = new_trace_group.get();
1101 // Extract traces for the trace group, removing them from
1103 const vector< shared_ptr<Trace> > new_traces_in_group =
1104 extract_new_traces_for_channels(group->channels(),
1105 signal_map, add_traces);
1107 // Add the traces to the group
1108 const pair<int, int> prev_v_extents = owner->v_extents();
1109 int offset = prev_v_extents.second - prev_v_extents.first;
1110 for (shared_ptr<Trace> trace : new_traces_in_group) {
1112 owner->add_child_item(trace);
1114 const pair<int, int> extents = trace->v_extents();
1115 if (trace->enabled())
1116 offset += -extents.first;
1117 trace->force_to_v_offset(offset);
1118 if (trace->enabled())
1119 offset += extents.second;
1122 if (new_trace_group) {
1123 // Assign proper vertical offsets to each channel in the group
1124 new_trace_group->restack_items();
1126 // If this is a new group, enqueue it in the new top level
1128 if (!new_traces_in_group.empty())
1129 new_top_level_items.push_back(new_trace_group);
1133 // Enqueue the remaining logic channels in a group
1134 vector< shared_ptr<Channel> > logic_channels;
1135 copy_if(channels.begin(), channels.end(), back_inserter(logic_channels),
1136 [](const shared_ptr<Channel>& c) {
1137 return c->type() == sigrok::ChannelType::LOGIC; });
1139 const vector< shared_ptr<Trace> > non_grouped_logic_signals =
1140 extract_new_traces_for_channels(logic_channels, signal_map, add_traces);
1142 if (non_grouped_logic_signals.size() > 0) {
1143 const shared_ptr<TraceGroup> non_grouped_trace_group(
1144 make_shared<TraceGroup>());
1145 for (shared_ptr<Trace> trace : non_grouped_logic_signals)
1146 non_grouped_trace_group->add_child_item(trace);
1148 non_grouped_trace_group->restack_items();
1149 new_top_level_items.push_back(non_grouped_trace_group);
1152 // Enqueue the remaining channels as free ungrouped traces
1153 const vector< shared_ptr<Trace> > new_top_level_signals =
1154 extract_new_traces_for_channels(channels, signal_map, add_traces);
1155 new_top_level_items.insert(new_top_level_items.end(),
1156 new_top_level_signals.begin(), new_top_level_signals.end());
1158 // Enqueue any remaining traces i.e. decode traces
1159 new_top_level_items.insert(new_top_level_items.end(),
1160 add_traces.begin(), add_traces.end());
1162 // Remove any removed traces
1163 for (shared_ptr<Trace> trace : remove_traces) {
1164 TraceTreeItemOwner *const owner = trace->owner();
1166 owner->remove_child_item(trace);
1169 // Remove any empty trace groups
1170 for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
1171 if (group->child_items().size() == 0) {
1172 remove_child_item(group);
1176 // Add and position the pending top levels items
1177 int offset = v_extents().second;
1178 for (auto item : new_top_level_items) {
1179 add_child_item(item);
1181 // Position the item after the last item or at the top if there is none
1182 const pair<int, int> extents = item->v_extents();
1184 if (item->enabled())
1185 offset += -extents.first;
1187 item->force_to_v_offset(offset);
1189 if (item->enabled())
1190 offset += extents.second;
1196 viewport_->update();
1198 if (reset_scrollbar)
1199 set_scroll_default();
1202 void View::capture_state_updated(int state)
1204 if (state == Session::Running) {
1205 set_time_unit(util::TimeUnit::Samples);
1207 trigger_markers_.clear();
1209 // Activate "always zoom to fit" if the setting is enabled and we're
1210 // the main view of this session (other trace views may be used for
1211 // zooming and we don't want to mess them up)
1212 GlobalSettings settings;
1213 bool state = settings.value(GlobalSettings::Key_View_AlwaysZoomToFit).toBool();
1214 if (is_main_view_ && state) {
1215 always_zoom_to_fit_ = true;
1216 always_zoom_to_fit_changed(always_zoom_to_fit_);
1219 // Enable sticky scrolling if the setting is enabled
1220 sticky_scrolling_ = settings.value(GlobalSettings::Key_View_StickyScrolling).toBool();
1223 if (state == Session::Stopped) {
1224 // After acquisition has stopped we need to re-calculate the ticks once
1225 // as it's otherwise done when the user pans or zooms, which is too late
1226 calculate_tick_spacing();
1228 // Reset "always zoom to fit", the acquisition has stopped
1229 if (always_zoom_to_fit_) {
1230 // Perform a final zoom-to-fit before disabling
1231 zoom_fit(always_zoom_to_fit_);
1232 always_zoom_to_fit_ = false;
1233 always_zoom_to_fit_changed(always_zoom_to_fit_);
1238 void View::data_updated()
1240 if (always_zoom_to_fit_ || sticky_scrolling_) {
1241 if (!delayed_view_updater_.isActive())
1242 delayed_view_updater_.start();
1244 determine_time_unit();
1247 viewport_->update();
1251 void View::perform_delayed_view_update()
1253 if (always_zoom_to_fit_) {
1255 } else if (sticky_scrolling_) {
1256 // Make right side of the view sticky
1259 get_scroll_layout(length, offset);
1261 const QSize areaSize = viewport_->size();
1262 length = max(length - areaSize.width(), 0.0);
1264 set_offset(scale_ * length);
1267 determine_time_unit();
1270 viewport_->update();
1273 void View::process_sticky_events()
1275 if (sticky_events_ & TraceTreeItemHExtentsChanged)
1277 if (sticky_events_ & TraceTreeItemVExtentsChanged) {
1278 restack_all_trace_tree_items();
1282 // Clear the sticky events
1286 void View::on_hover_point_changed()
1288 const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
1289 list_by_type<TraceTreeItem>());
1290 for (shared_ptr<TraceTreeItem> r : trace_tree_items)
1291 r->hover_point_changed();
1294 } // namespace TraceView
1295 } // namespace views