Allow markers to be selected

app/widget/timeruler/seekablewidget.cpp

@@ -150,6 +150,18 @@ void SeekableWidget::SetScroll(int s)
   update();
 }
 
+QMap<TimelineMarker *, Marker *> SeekableWidget::GetActiveMarkers() {
+  QMap<TimelineMarker *, Marker *> active_markers;
+
+  foreach(TimelineMarker* marker, marker_map_.keys()) {
+    if (marker_map_.value(marker)->active()) {
+      active_markers.insert(marker, marker_map_.value(marker));
+    }
+  }
+
+  return active_markers;
+}
+
 void SeekableWidget::addMarker(TimelineMarker* marker)
 {
   if (!marker_map_.contains(marker)) {
@@ -158,6 +170,7 @@ void SeekableWidget::addMarker(TimelineMarker* marker)
 
     connect(marker_widget, &Marker::ColorChanged, marker, &TimelineMarker::set_color);
     connect(marker, &TimelineMarker::ColorChanged, marker_widget, &Marker::SetColor);
+    connect(marker_widget, &Marker::markerSelected, this, &SeekableWidget::markerSelected);
 
     marker_widget->move(TimeToScreen(marker->time().in()), 20);
     marker_widget->SetColor(marker->color());
@@ -173,6 +186,16 @@ void SeekableWidget::updateMarkerPositions()
   }
 }
 
+void SeekableWidget::markerSelected(Marker* marker)
+{
+  foreach(Marker * marker_widget, marker_map_.values()) {
+    if (marker_widget != marker) {
+      marker_widget->set_active(false);
+      marker_widget->update();
+    }
+  }
+}
+
 int SeekableWidget::TimeToScreen(const rational &time) const
 {
   return qFloor(TimeToScene(time)) - scroll_;

app/widget/timeruler/seekablewidget.h

@@ -53,6 +53,10 @@ public:
     return dragging_;
   }
 
+  virtual void DeleteSelected(){};
+
+  QMap<TimelineMarker*, Marker*> GetActiveMarkers();
+
 public slots:
   void SetTime(const rational &r);
 
@@ -62,6 +66,8 @@ public slots:
 
   void updateMarkerPositions();
 
+  void markerSelected(Marker* marker);
+
 protected:
   void SeekToScreenPoint(int screen);
 

app/widget/timeruler/timeruler.cpp

@@ -83,6 +83,14 @@ void TimeRuler::SetPlaybackCache(PlaybackCache *cache)
   update();
 }
 
+void TimeRuler::DeleteSelected()
+{
+  foreach(TimelineMarker* marker, GetActiveMarkers().keys()) {
+    timeline_points()->markers()->RemoveMarker(marker);
+    GetActiveMarkers().value(marker)->deleteLater();
+  }
+}
+
 void TimeRuler::paintEvent(QPaintEvent *)
 {
   // Nothing to paint if the timebase is invalid

app/widget/timeruler/timeruler.h

@@ -41,6 +41,8 @@ public:
 
   void SetPlaybackCache(PlaybackCache* cache);
 
+  virtual void DeleteSelected() override;
+
 protected:
   virtual void paintEvent(QPaintEvent* e) override;