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, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #include <libsigrokdecode/libsigrokdecode.h>
33 #include <unordered_set>
35 #include <QApplication>
37 #include <QFontMetrics>
38 #include <QMouseEvent>
41 #include <libsigrokcxx/libsigrokcxx.hpp>
43 #include "decodetrace.hpp"
45 #include "logicsignal.hpp"
48 #include "tracegroup.hpp"
50 #include "viewport.hpp"
52 #include "pv/session.hpp"
53 #include "pv/devices/device.hpp"
54 #include "pv/data/logic.hpp"
55 #include "pv/data/logicsegment.hpp"
56 #include "pv/util.hpp"
58 using boost::shared_lock;
59 using boost::shared_mutex;
61 using pv::data::SignalData;
62 using pv::data::Segment;
63 using pv::util::format_time;
64 using pv::util::TimeUnit;
65 using pv::util::Timestamp;
68 using std::dynamic_pointer_cast;
71 using std::lock_guard;
77 using std::set_difference;
78 using std::shared_ptr;
79 using std::unordered_map;
80 using std::unordered_set;
87 const Timestamp View::MaxScale("1e9");
88 const Timestamp View::MinScale("1e-12");
90 const int View::MaxScrollValue = INT_MAX / 2;
91 const int View::MaxViewAutoUpdateRate = 25; // No more than 25 Hz with sticky scrolling
93 const int View::ScaleUnits[3] = {1, 2, 5};
95 View::View(Session &session, QWidget *parent) :
96 QAbstractScrollArea(parent),
98 viewport_(new Viewport(*this)),
99 ruler_(new Ruler(*this)),
100 header_(new Header(*this)),
103 updating_scroll_(false),
104 sticky_scrolling_(false), // Default setting is set in MainWindow::setup_ui()
105 always_zoom_to_fit_(false),
107 tick_prefix_(pv::util::SIPrefix::yocto),
109 time_unit_(util::TimeUnit::Time),
110 show_cursors_(false),
111 cursors_(new CursorPair(*this)),
112 next_flag_text_('A'),
115 connect(horizontalScrollBar(), SIGNAL(valueChanged(int)),
116 this, SLOT(h_scroll_value_changed(int)));
117 connect(verticalScrollBar(), SIGNAL(valueChanged(int)),
118 this, SLOT(v_scroll_value_changed()));
120 connect(&session_, SIGNAL(signals_changed()),
121 this, SLOT(signals_changed()));
122 connect(&session_, SIGNAL(capture_state_changed(int)),
123 this, SLOT(capture_state_updated(int)));
124 connect(&session_, SIGNAL(data_received()),
125 this, SLOT(data_updated()));
126 connect(&session_, SIGNAL(frame_ended()),
127 this, SLOT(data_updated()));
129 connect(header_, SIGNAL(selection_changed()),
130 ruler_, SLOT(clear_selection()));
131 connect(ruler_, SIGNAL(selection_changed()),
132 header_, SLOT(clear_selection()));
134 connect(header_, SIGNAL(selection_changed()),
135 this, SIGNAL(selection_changed()));
136 connect(ruler_, SIGNAL(selection_changed()),
137 this, SIGNAL(selection_changed()));
139 connect(this, SIGNAL(hover_point_changed()),
140 this, SLOT(on_hover_point_changed()));
142 connect(&lazy_event_handler_, SIGNAL(timeout()),
143 this, SLOT(process_sticky_events()));
144 lazy_event_handler_.setSingleShot(true);
146 connect(&delayed_view_updater_, SIGNAL(timeout()),
147 this, SLOT(perform_delayed_view_update()));
148 delayed_view_updater_.setSingleShot(true);
149 delayed_view_updater_.setInterval(1000 / MaxViewAutoUpdateRate);
151 setViewport(viewport_);
153 viewport_->installEventFilter(this);
154 ruler_->installEventFilter(this);
155 header_->installEventFilter(this);
157 // Trigger the initial event manually. The default device has signals
158 // which were created before this object came into being
161 // make sure the transparent widgets are on the top
165 // Update the zoom state
166 calculate_tick_spacing();
169 Session& View::session()
174 const Session& View::session() const
184 const View* View::view() const
189 Viewport* View::viewport()
194 const Viewport* View::viewport() const
199 vector< shared_ptr<TimeItem> > View::time_items() const
201 const vector<shared_ptr<Flag>> f(flags());
202 vector<shared_ptr<TimeItem>> items(f.begin(), f.end());
203 items.push_back(cursors_);
204 items.push_back(cursors_->first());
205 items.push_back(cursors_->second());
209 double View::scale() const
214 const Timestamp& View::offset() const
219 int View::owner_visual_v_offset() const
221 return -verticalScrollBar()->sliderPosition();
224 void View::set_v_offset(int offset)
226 verticalScrollBar()->setSliderPosition(offset);
231 unsigned int View::depth() const
236 pv::util::SIPrefix View::tick_prefix() const
241 unsigned int View::tick_precision() const
243 return tick_precision_;
246 double View::tick_period() const
251 TimeUnit View::time_unit() const
256 void View::zoom(double steps)
258 zoom(steps, viewport_->width() / 2);
261 void View::zoom(double steps, int offset)
263 set_zoom(scale_ * pow(3.0/2.0, -steps), offset);
266 void View::zoom_fit(bool gui_state)
268 // Act as one-shot when stopped, toggle along with the GUI otherwise
269 if (session_.get_capture_state() == Session::Stopped) {
270 always_zoom_to_fit_ = false;
271 always_zoom_to_fit_changed(false);
273 always_zoom_to_fit_ = gui_state;
274 always_zoom_to_fit_changed(gui_state);
277 const pair<Timestamp, Timestamp> extents = get_time_extents();
278 const Timestamp delta = extents.second - extents.first;
279 if (delta < Timestamp("1e-12"))
283 const int w = viewport_->width();
287 const Timestamp scale = max(min(delta / w, MaxScale), MinScale);
288 set_scale_offset(scale.convert_to<double>(), extents.first);
291 void View::zoom_one_to_one()
293 using pv::data::SignalData;
295 // Make a set of all the visible data objects
296 set< shared_ptr<SignalData> > visible_data = get_visible_data();
297 if (visible_data.empty())
300 double samplerate = 0.0;
301 for (const shared_ptr<SignalData> d : visible_data) {
303 const vector< shared_ptr<Segment> > segments =
305 for (const shared_ptr<Segment> &s : segments)
306 samplerate = max(samplerate, s->samplerate());
309 if (samplerate == 0.0)
313 const int w = viewport_->width();
317 set_zoom(1.0 / samplerate, w / 2);
320 void View::set_scale_offset(double scale, const Timestamp& offset)
322 // Disable sticky scrolling / always zoom to fit when acquisition runs
323 // and user drags the viewport
324 if ((scale_ == scale) && (offset_ != offset) &&
325 (session_.get_capture_state() == Session::Running)) {
327 if (sticky_scrolling_) {
328 sticky_scrolling_ = false;
329 sticky_scrolling_changed(false);
332 if (always_zoom_to_fit_) {
333 always_zoom_to_fit_ = false;
334 always_zoom_to_fit_changed(false);
341 calculate_tick_spacing();
346 scale_offset_changed();
349 set< shared_ptr<SignalData> > View::get_visible_data() const
351 shared_lock<shared_mutex> lock(session().signals_mutex());
352 const unordered_set< shared_ptr<Signal> > &sigs(session().signals());
354 // Make a set of all the visible data objects
355 set< shared_ptr<SignalData> > visible_data;
356 for (const shared_ptr<Signal> sig : sigs)
358 visible_data.insert(sig->data());
363 pair<Timestamp, Timestamp> View::get_time_extents() const
365 boost::optional<Timestamp> left_time, right_time;
366 const set< shared_ptr<SignalData> > visible_data = get_visible_data();
367 for (const shared_ptr<SignalData> d : visible_data)
369 const vector< shared_ptr<Segment> > segments =
371 for (const shared_ptr<Segment> &s : segments) {
372 double samplerate = s->samplerate();
373 samplerate = (samplerate <= 0.0) ? 1.0 : samplerate;
375 const Timestamp start_time = s->start_time();
376 left_time = left_time ?
377 min(*left_time, start_time) :
379 right_time = right_time ?
380 max(*right_time, start_time + d->max_sample_count() / samplerate) :
381 start_time + d->max_sample_count() / samplerate;
385 if (!left_time || !right_time)
386 return make_pair(0, 0);
388 assert(*left_time < *right_time);
389 return make_pair(*left_time, *right_time);
392 void View::enable_sticky_scrolling(bool state)
394 sticky_scrolling_ = state;
397 bool View::cursors_shown() const
399 return show_cursors_;
402 void View::show_cursors(bool show)
404 show_cursors_ = show;
409 void View::centre_cursors()
411 const double time_width = scale_ * viewport_->width();
412 cursors_->first()->set_time(offset_ + time_width * 0.4);
413 cursors_->second()->set_time(offset_ + time_width * 0.6);
418 std::shared_ptr<CursorPair> View::cursors() const
423 void View::add_flag(const Timestamp& time)
425 flags_.push_back(shared_ptr<Flag>(new Flag(*this, time,
426 QString("%1").arg(next_flag_text_))));
427 next_flag_text_ = (next_flag_text_ >= 'Z') ? 'A' :
428 (next_flag_text_ + 1);
429 time_item_appearance_changed(true, true);
432 void View::remove_flag(std::shared_ptr<Flag> flag)
435 time_item_appearance_changed(true, true);
438 vector< std::shared_ptr<Flag> > View::flags() const
440 vector< std::shared_ptr<Flag> > flags(flags_.begin(), flags_.end());
441 stable_sort(flags.begin(), flags.end(),
442 [](const shared_ptr<Flag> &a, const shared_ptr<Flag> &b) {
443 return a->time() < b->time();
449 const QPoint& View::hover_point() const
454 void View::update_viewport()
461 void View::restack_all_row_items()
463 // Make a list of owners that is sorted from deepest first
464 const auto owners = list_row_item_owners();
465 vector< RowItemOwner* > sorted_owners(owners.begin(), owners.end());
466 sort(sorted_owners.begin(), sorted_owners.end(),
467 [](const RowItemOwner* a, const RowItemOwner *b) {
468 return a->depth() > b->depth(); });
470 // Restack the items recursively
471 for (auto &o : sorted_owners)
474 // Animate the items to their destination
475 for (const auto &r : *this)
476 r->animate_to_layout_v_offset();
479 void View::get_scroll_layout(double &length, Timestamp &offset) const
481 const pair<Timestamp, Timestamp> extents = get_time_extents();
482 length = ((extents.second - extents.first) / scale_).convert_to<double>();
483 offset = offset_ / scale_;
486 void View::set_zoom(double scale, int offset)
488 // Reset the "always zoom to fit" feature as the user changed the zoom
489 always_zoom_to_fit_ = false;
490 always_zoom_to_fit_changed(false);
492 const Timestamp cursor_offset = offset_ + scale_ * offset;
493 const Timestamp new_scale = max(min(Timestamp(scale), MaxScale), MinScale);
494 const Timestamp new_offset = cursor_offset - new_scale * offset;
495 set_scale_offset(new_scale.convert_to<double>(), new_offset);
498 void View::calculate_tick_spacing()
500 const double SpacingIncrement = 10.0f;
501 const double MinValueSpacing = 40.0f;
503 // Figure out the highest numeric value visible on a label
504 const QSize areaSize = viewport_->size();
505 const Timestamp max_time = max(fabs(offset_),
506 fabs(offset_ + scale_ * areaSize.width()));
508 double min_width = SpacingIncrement;
509 double label_width, tick_period_width;
511 QFontMetrics m(QApplication::font());
514 const double min_period = scale_ * min_width;
516 const int order = (int)floorf(log10f(min_period));
517 const double order_decimal = pow(10.0, order);
519 // Allow for a margin of error so that a scale unit of 1 can be used.
520 // Otherwise, for a SU of 1 the tick period will almost always be below
521 // the min_period by a small amount - and thus skipped in favor of 2.
522 // Note: margin assumes that SU[0] and SU[1] contain the smallest values
523 double tp_margin = (ScaleUnits[0] + ScaleUnits[1]) / 2.0;
524 double tp_with_margin;
525 unsigned int unit = 0;
528 tp_with_margin = order_decimal * (ScaleUnits[unit++] + tp_margin);
529 } while (tp_with_margin < min_period && unit < countof(ScaleUnits));
531 tick_period_ = order_decimal * ScaleUnits[unit - 1];
532 tick_prefix_ = static_cast<pv::util::SIPrefix>(
533 (order - pv::util::exponent(pv::util::SIPrefix::yocto)) / 3);
535 // Precision is the number of fractional digits required, not
536 // taking the prefix into account (and it must never be negative)
537 tick_precision_ = std::max((int)ceil(log10f(1 / tick_period_)), 0);
539 tick_period_width = tick_period_ / scale_;
541 const QString label_text =
542 format_time(max_time, tick_prefix_, time_unit_, tick_precision_);
544 label_width = m.boundingRect(0, 0, INT_MAX, INT_MAX,
545 Qt::AlignLeft | Qt::AlignTop, label_text).width() +
548 min_width += SpacingIncrement;
550 } while (tick_period_width < label_width);
553 void View::update_scroll()
557 const QSize areaSize = viewport_->size();
559 // Set the horizontal scroll bar
562 get_scroll_layout(length, offset);
563 length = max(length - areaSize.width(), 0.0);
565 int major_tick_distance = tick_period_ / scale_;
567 horizontalScrollBar()->setPageStep(areaSize.width() / 2);
568 horizontalScrollBar()->setSingleStep(major_tick_distance);
570 updating_scroll_ = true;
572 if (length < MaxScrollValue) {
573 horizontalScrollBar()->setRange(0, length);
574 horizontalScrollBar()->setSliderPosition(offset.convert_to<double>());
576 horizontalScrollBar()->setRange(0, MaxScrollValue);
577 horizontalScrollBar()->setSliderPosition(
578 (offset_ * MaxScrollValue / (scale_ * length)).convert_to<double>());
581 updating_scroll_ = false;
583 // Set the vertical scrollbar
584 verticalScrollBar()->setPageStep(areaSize.height());
585 verticalScrollBar()->setSingleStep(areaSize.height() / 8);
587 const pair<int, int> extents = v_extents();
588 verticalScrollBar()->setRange(extents.first - (areaSize.height() / 2),
589 extents.second - (areaSize.height() / 2));
592 void View::update_layout()
595 header_->sizeHint().width() - pv::view::Header::BaselineOffset,
596 ruler_->sizeHint().height(), 0, 0);
597 ruler_->setGeometry(viewport_->x(), 0,
598 viewport_->width(), ruler_->extended_size_hint().height());
599 header_->setGeometry(0, viewport_->y(),
600 header_->extended_size_hint().width(), viewport_->height());
604 void View::paint_label(QPainter &p, const QRect &rect, bool hover)
611 QRectF View::label_rect(const QRectF &rect)
617 RowItemOwner* View::find_prevalent_trace_group(
618 const shared_ptr<sigrok::ChannelGroup> &group,
619 const unordered_map<shared_ptr<sigrok::Channel>, shared_ptr<Signal> >
624 unordered_set<RowItemOwner*> owners;
625 vector<RowItemOwner*> owner_list;
627 // Make a set and a list of all the owners
628 for (const auto &channel : group->channels()) {
629 const auto iter = signal_map.find(channel);
630 if (iter == signal_map.end())
633 RowItemOwner *const o = (*iter).second->owner();
634 owner_list.push_back(o);
638 // Iterate through the list of owners, and find the most prevalent
639 size_t max_prevalence = 0;
640 RowItemOwner *prevalent_owner = nullptr;
641 for (RowItemOwner *owner : owners) {
642 const size_t prevalence = std::count_if(
643 owner_list.begin(), owner_list.end(),
644 [&](RowItemOwner *o) { return o == owner; });
645 if (prevalence > max_prevalence) {
646 max_prevalence = prevalence;
647 prevalent_owner = owner;
651 return prevalent_owner;
654 vector< shared_ptr<Trace> > View::extract_new_traces_for_channels(
655 const vector< shared_ptr<sigrok::Channel> > &channels,
656 const unordered_map<shared_ptr<sigrok::Channel>, shared_ptr<Signal> >
658 set< shared_ptr<Trace> > &add_list)
660 vector< shared_ptr<Trace> > filtered_traces;
662 for (const auto &channel : channels)
664 const auto map_iter = signal_map.find(channel);
665 if (map_iter == signal_map.end())
668 shared_ptr<Trace> trace = (*map_iter).second;
669 const auto list_iter = add_list.find(trace);
670 if (list_iter == add_list.end())
673 filtered_traces.push_back(trace);
674 add_list.erase(list_iter);
677 return filtered_traces;
680 void View::determine_time_unit()
682 // Check whether we know the sample rate and hence can use time as the unit
683 if (time_unit_ == util::TimeUnit::Samples) {
684 shared_lock<shared_mutex> lock(session().signals_mutex());
685 const unordered_set< shared_ptr<Signal> > &sigs(session().signals());
687 // Check all signals but...
688 for (const shared_ptr<Signal> signal : sigs) {
689 const shared_ptr<SignalData> data = signal->data();
691 // ...only check first segment of each
692 const vector< shared_ptr<Segment> > segments = data->segments();
693 if (!segments.empty())
694 if (segments[0]->samplerate()) {
695 time_unit_ = util::TimeUnit::Time;
702 bool View::eventFilter(QObject *object, QEvent *event)
704 const QEvent::Type type = event->type();
705 if (type == QEvent::MouseMove) {
707 const QMouseEvent *const mouse_event = (QMouseEvent*)event;
708 if (object == viewport_)
709 hover_point_ = mouse_event->pos();
710 else if (object == ruler_)
711 hover_point_ = QPoint(mouse_event->x(), 0);
712 else if (object == header_)
713 hover_point_ = QPoint(0, mouse_event->y());
715 hover_point_ = QPoint(-1, -1);
717 hover_point_changed();
719 } else if (type == QEvent::Leave) {
720 hover_point_ = QPoint(-1, -1);
721 hover_point_changed();
724 return QObject::eventFilter(object, event);
727 bool View::viewportEvent(QEvent *e)
731 case QEvent::MouseButtonPress:
732 case QEvent::MouseButtonRelease:
733 case QEvent::MouseButtonDblClick:
734 case QEvent::MouseMove:
736 case QEvent::TouchBegin:
737 case QEvent::TouchUpdate:
738 case QEvent::TouchEnd:
742 return QAbstractScrollArea::viewportEvent(e);
746 void View::resizeEvent(QResizeEvent*)
751 void View::row_item_appearance_changed(bool label, bool content)
759 void View::time_item_appearance_changed(bool label, bool content)
767 void View::extents_changed(bool horz, bool vert)
770 (horz ? RowItemHExtentsChanged : 0) |
771 (vert ? RowItemVExtentsChanged : 0);
772 lazy_event_handler_.start();
775 void View::h_scroll_value_changed(int value)
777 if (updating_scroll_)
780 // Disable sticky scrolling when user moves the horizontal scroll bar
781 // during a running acquisition
782 if (sticky_scrolling_ && (session_.get_capture_state() == Session::Running)) {
783 sticky_scrolling_ = false;
784 sticky_scrolling_changed(false);
787 const int range = horizontalScrollBar()->maximum();
788 if (range < MaxScrollValue)
789 offset_ = scale_ * value;
793 get_scroll_layout(length, offset);
794 offset_ = scale_ * length * value / MaxScrollValue;
801 void View::v_scroll_value_changed()
807 void View::signals_changed()
809 vector< shared_ptr<RowItem> > new_top_level_items;
811 const auto device = session_.device();
815 shared_ptr<sigrok::Device> sr_dev = device->device();
818 // Make a list of traces that are being added, and a list of traces
819 // that are being removed
820 const set<shared_ptr<Trace>> prev_traces = list_by_type<Trace>();
822 shared_lock<shared_mutex> lock(session_.signals_mutex());
823 const unordered_set< shared_ptr<Signal> > &sigs(session_.signals());
825 set< shared_ptr<Trace> > traces(sigs.begin(), sigs.end());
828 const vector< shared_ptr<DecodeTrace> > decode_traces(
829 session().get_decode_signals());
830 traces.insert(decode_traces.begin(), decode_traces.end());
833 set< shared_ptr<Trace> > add_traces;
834 set_difference(traces.begin(), traces.end(),
835 prev_traces.begin(), prev_traces.end(),
836 inserter(add_traces, add_traces.begin()));
838 set< shared_ptr<Trace> > remove_traces;
839 set_difference(prev_traces.begin(), prev_traces.end(),
840 traces.begin(), traces.end(),
841 inserter(remove_traces, remove_traces.begin()));
843 // Make a look-up table of sigrok Channels to pulseview Signals
844 unordered_map<shared_ptr<sigrok::Channel>, shared_ptr<Signal> >
846 for (const shared_ptr<Signal> &sig : sigs)
847 signal_map[sig->channel()] = sig;
849 // Populate channel groups
850 for (auto entry : sr_dev->channel_groups())
852 const shared_ptr<sigrok::ChannelGroup> &group = entry.second;
854 if (group->channels().size() <= 1)
857 // Find best trace group to add to
858 RowItemOwner *owner = find_prevalent_trace_group(
861 // If there is no trace group, create one
862 shared_ptr<TraceGroup> new_trace_group;
864 new_trace_group.reset(new TraceGroup());
865 owner = new_trace_group.get();
868 // Extract traces for the trace group, removing them from
870 const vector< shared_ptr<Trace> > new_traces_in_group =
871 extract_new_traces_for_channels(group->channels(),
872 signal_map, add_traces);
874 // Add the traces to the group
875 const pair<int, int> prev_v_extents = owner->v_extents();
876 int offset = prev_v_extents.second - prev_v_extents.first;
877 for (shared_ptr<Trace> trace : new_traces_in_group) {
879 owner->add_child_item(trace);
881 const pair<int, int> extents = trace->v_extents();
882 if (trace->enabled())
883 offset += -extents.first;
884 trace->force_to_v_offset(offset);
885 if (trace->enabled())
886 offset += extents.second;
889 // If this is a new group, enqueue it in the new top level
891 if (!new_traces_in_group.empty() && new_trace_group)
892 new_top_level_items.push_back(new_trace_group);
895 // Enqueue the remaining channels as free ungrouped traces
896 const vector< shared_ptr<Trace> > new_top_level_signals =
897 extract_new_traces_for_channels(sr_dev->channels(),
898 signal_map, add_traces);
899 new_top_level_items.insert(new_top_level_items.end(),
900 new_top_level_signals.begin(), new_top_level_signals.end());
902 // Enqueue any remaining traces i.e. decode traces
903 new_top_level_items.insert(new_top_level_items.end(),
904 add_traces.begin(), add_traces.end());
906 // Remove any removed traces
907 for (shared_ptr<Trace> trace : remove_traces) {
908 RowItemOwner *const owner = trace->owner();
910 owner->remove_child_item(trace);
913 // Add and position the pending top levels items
914 for (auto item : new_top_level_items) {
915 add_child_item(item);
917 // Position the item after the last present item
918 int offset = v_extents().second;
919 const pair<int, int> extents = item->v_extents();
921 offset += -extents.first;
922 item->force_to_v_offset(offset);
924 offset += extents.second;
933 void View::capture_state_updated(int state)
935 if (state == Session::Running)
936 time_unit_ = util::TimeUnit::Samples;
938 if (state == Session::Stopped) {
939 // After acquisition has stopped we need to re-calculate the ticks once
940 // as it's otherwise done when the user pans or zooms, which is too late
941 calculate_tick_spacing();
943 // Reset "always zoom to fit", the acquisition has stopped
944 if (always_zoom_to_fit_) {
945 always_zoom_to_fit_ = false;
946 always_zoom_to_fit_changed(false);
951 void View::data_updated()
953 if (always_zoom_to_fit_ || sticky_scrolling_) {
954 if (!delayed_view_updater_.isActive())
955 delayed_view_updater_.start();
957 determine_time_unit();
964 void View::perform_delayed_view_update()
966 if (always_zoom_to_fit_)
969 if (sticky_scrolling_) {
970 // Make right side of the view sticky
973 get_scroll_layout(length, offset);
975 const QSize areaSize = viewport_->size();
976 length = max(length - areaSize.width(), 0.0);
978 offset_ = scale_ * length;
981 determine_time_unit();
987 void View::process_sticky_events()
989 if (sticky_events_ & RowItemHExtentsChanged)
991 if (sticky_events_ & RowItemVExtentsChanged) {
992 restack_all_row_items();
996 // Clear the sticky events
1000 void View::on_hover_point_changed()
1002 for (shared_ptr<RowItem> r : *this)
1003 r->hover_point_changed();