]> sigrok.org Git - pulseview.git/blobdiff - pv/views/trace/view.cpp
Add setting for the snap-to-edge distance
[pulseview.git] / pv / views / trace / view.cpp
index 3cb26ec400be3028d005b4c3b8d3b61d1c7a2a50..29c0675d63b5ca1f2db20da4008e88083c8ac110 100644 (file)
@@ -38,6 +38,7 @@
 #include <QApplication>
 #include <QEvent>
 #include <QFontMetrics>
+#include <QMenu>
 #include <QMouseEvent>
 #include <QScrollBar>
 #include <QVBoxLayout>
@@ -177,6 +178,7 @@ View::View(Session &session, bool is_main_view, QWidget *parent) :
        // Set up settings and event handlers
        GlobalSettings settings;
        colored_bg_ = settings.value(GlobalSettings::Key_View_ColoredBG).toBool();
+       snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
 
        GlobalSettings::add_change_handler(this);
 
@@ -319,6 +321,11 @@ void View::remove_decode_signal(shared_ptr<data::DecodeSignal> signal)
 }
 #endif
 
+shared_ptr<Signal> View::get_signal_under_mouse_cursor() const
+{
+       return signal_under_mouse_cursor_;
+}
+
 View* View::view()
 {
        return this;
@@ -385,7 +392,7 @@ void View::restore_settings(QSettings &settings)
                        boost::archive::text_iarchive ia(ss);
                        ia >> boost::serialization::make_nvp("ruler_shift", shift);
                        ruler_shift_ = shift;
-               } catch (boost::archive::archive_exception) {
+               } catch (boost::archive::archive_exception&) {
                        qDebug() << "Could not restore the view ruler shift";
                }
        }
@@ -400,7 +407,7 @@ void View::restore_settings(QSettings &settings)
                        ia >> boost::serialization::make_nvp("offset", offset);
                        // This also updates ruler_offset_
                        set_offset(offset);
-               } catch (boost::archive::archive_exception) {
+               } catch (boost::archive::archive_exception&) {
                        qDebug() << "Could not restore the view offset";
                }
        }
@@ -619,8 +626,6 @@ Trace::SegmentDisplayMode View::segment_display_mode() const
 
 void View::set_segment_display_mode(Trace::SegmentDisplayMode mode)
 {
-       trigger_markers_.clear();
-
        segment_display_mode_ = mode;
 
        for (shared_ptr<Signal> signal : signals_)
@@ -854,6 +859,46 @@ const QPoint& View::hover_point() const
        return hover_point_;
 }
 
+int64_t View::get_nearest_level_change(const QPoint &p) const
+{
+       if (snap_distance_ == 0)
+               return -1;
+
+       shared_ptr<Signal> signal = signal_under_mouse_cursor_;
+
+       if (!signal)
+               return -1;
+
+       // Calculate sample number from cursor position
+       const double samples_per_pixel = signal->base()->get_samplerate() * scale();
+       const int64_t x_offset = offset().convert_to<double>() / scale();
+       const int64_t sample_num = max(((x_offset + p.x()) * samples_per_pixel), 0.0);
+
+       // Query for nearest level changes
+       vector<data::LogicSegment::EdgePair> edges =
+               signal->get_nearest_level_changes(sample_num);
+
+       if (edges.size() != 2)
+               return -1;
+
+       // We received absolute sample numbers, make them relative
+       const int64_t left_sample_delta = sample_num - edges.front().first;
+       const int64_t right_sample_delta = edges.back().first - sample_num - 1;
+
+       const int64_t left_delta = left_sample_delta / samples_per_pixel;
+       const int64_t right_delta = right_sample_delta / samples_per_pixel;
+
+       int64_t nearest = -1;
+
+       // Only use closest left or right edge if they're close to the cursor
+       if ((left_delta < right_delta) && (left_delta < snap_distance_))
+               nearest = edges.front().first;
+       if ((left_delta >= right_delta) && (right_delta < snap_distance_))
+               nearest = edges.back().first;
+
+       return nearest;
+}
+
 void View::restack_all_trace_tree_items()
 {
        // Make a list of owners that is sorted from deepest first
@@ -876,10 +921,20 @@ void View::restack_all_trace_tree_items()
                i->animate_to_layout_v_offset();
 }
 
+int View::header_width() const
+{
+        return header_->extended_size_hint().width();
+}
+
 void View::on_setting_changed(const QString &key, const QVariant &value)
 {
        if (key == GlobalSettings::Key_View_TriggerIsZeroTime)
                on_settingViewTriggerIsZeroTime_changed(value);
+
+       if (key == GlobalSettings::Key_View_SnapDistance) {
+               GlobalSettings settings;
+               snap_distance_ = settings.value(GlobalSettings::Key_View_SnapDistance).toInt();
+       }
 }
 
 void View::trigger_event(int segment_id, util::Timestamp location)
@@ -1055,8 +1110,10 @@ void View::update_scroll()
                vscrollbar->setRange(extents.first - areaSize.height(),
                        extents.second);
 
-       if (scroll_needs_defaults_)
+       if (scroll_needs_defaults_) {
                set_scroll_default();
+               scroll_needs_defaults_ = false;
+       }
 }
 
 void View::reset_scroll()
@@ -1086,12 +1143,11 @@ void View::set_scroll_default()
 void View::determine_if_header_was_shrunk()
 {
        const int header_pane_width = splitter_->sizes().front();
-       const int header_width = header_->extended_size_hint().width();
 
        // Allow for a slight margin of error so that we also accept
        // slight differences when e.g. a label name change increased
        // the overall width
-       header_was_shrunk_ = (header_pane_width < (header_width - 10));
+       header_was_shrunk_ = (header_pane_width < (header_width() - 10));
 }
 
 void View::resize_header_to_fit()
@@ -1251,6 +1307,19 @@ bool View::eventFilter(QObject *object, QEvent *event)
        return QObject::eventFilter(object, event);
 }
 
+void View::contextMenuEvent(QContextMenuEvent *event)
+{
+       QPoint pos = event->pos() - QPoint(0, ruler_->sizeHint().height());
+
+       const shared_ptr<ViewItem> r = viewport_->get_mouse_over_item(pos);
+       if (!r)
+               return;
+
+       QMenu *menu = r->create_view_context_menu(this, pos);
+       if (menu)
+               menu->exec(event->globalPos());
+}
+
 void View::resizeEvent(QResizeEvent* event)
 {
        // Only adjust the top margin if we shrunk vertically
@@ -1262,11 +1331,24 @@ void View::resizeEvent(QResizeEvent* event)
 
 void View::update_hover_point()
 {
+       // Determine signal that the mouse cursor is hovering over
+       signal_under_mouse_cursor_.reset();
+       for (shared_ptr<Signal> s : signals_) {
+               const pair<int, int> extents = s->v_extents();
+               const int top = s->get_visual_y() + extents.first;
+               const int btm = s->get_visual_y() + extents.second;
+               if ((hover_point_.y() >= top) && (hover_point_.y() <= btm)
+                       && s->base()->enabled())
+                       signal_under_mouse_cursor_ = s;
+       }
+
+       // Update all trace tree items
        const vector<shared_ptr<TraceTreeItem>> trace_tree_items(
                list_by_type<TraceTreeItem>());
        for (shared_ptr<TraceTreeItem> r : trace_tree_items)
                r->hover_point_changed(hover_point_);
 
+       // Notify any other listeners
        hover_point_changed(hover_point_);
 }
 
@@ -1297,6 +1379,7 @@ void View::extents_changed(bool horz, bool vert)
                (horz ? TraceTreeItemHExtentsChanged : 0) |
                (vert ? TraceTreeItemVExtentsChanged : 0);
 
+       lazy_event_handler_.stop();
        lazy_event_handler_.start();
 }