+void Control::Impl::CheckHighlightedObjectGeometry()
+{
+ auto accessible = GetAccessibleObject();
+ auto lastPosition = accessible->GetLastPosition();
+ auto accessibleRect = accessible->GetExtents(Dali::Accessibility::CoordinateType::WINDOW);
+ auto rect = GetShowingGeometry(accessibleRect, accessible);
+
+ switch(mAccessibilityLastScreenRelativeMoveType)
+ {
+ case Dali::Accessibility::ScreenRelativeMoveType::OUTSIDE:
+ {
+ if(IsShowingGeometryOnScreen(rect))
+ {
+ mAccessibilityLastScreenRelativeMoveType = Dali::Accessibility::ScreenRelativeMoveType::INSIDE;
+ }
+ break;
+ }
+ case Dali::Accessibility::ScreenRelativeMoveType::INSIDE:
+ {
+ if(rect.width < 0 && !Dali::Equals(accessibleRect.x, lastPosition.x))
+ {
+ mAccessibilityLastScreenRelativeMoveType = (accessibleRect.x < lastPosition.x) ? Dali::Accessibility::ScreenRelativeMoveType::OUTGOING_TOP_LEFT : Dali::Accessibility::ScreenRelativeMoveType::OUTGOING_BOTTOM_RIGHT;
+ }
+ if(rect.height < 0 && !Dali::Equals(accessibleRect.y, lastPosition.y))
+ {
+ mAccessibilityLastScreenRelativeMoveType = (accessibleRect.y < lastPosition.y) ? Dali::Accessibility::ScreenRelativeMoveType::OUTGOING_TOP_LEFT : Dali::Accessibility::ScreenRelativeMoveType::OUTGOING_BOTTOM_RIGHT;
+ }
+ // notify AT-clients on outgoing moves only
+ if(mAccessibilityLastScreenRelativeMoveType != Dali::Accessibility::ScreenRelativeMoveType::INSIDE)
+ {
+ accessible->EmitMovedOutOfScreen(mAccessibilityLastScreenRelativeMoveType);
+ }
+ break;
+ }
+ case Dali::Accessibility::ScreenRelativeMoveType::OUTGOING_TOP_LEFT:
+ case Dali::Accessibility::ScreenRelativeMoveType::OUTGOING_BOTTOM_RIGHT:
+ {
+ if(IsShowingGeometryOnScreen(rect))
+ {
+ mAccessibilityLastScreenRelativeMoveType = Dali::Accessibility::ScreenRelativeMoveType::INSIDE;
+ }
+ else
+ {
+ mAccessibilityLastScreenRelativeMoveType = Dali::Accessibility::ScreenRelativeMoveType::OUTSIDE;
+ }
+ break;
+ }
+ default:
+ {
+ break;
+ }
+ }
+
+ accessible->SetLastPosition(Vector2(accessibleRect.x, accessibleRect.y));
+}
+
+void Control::Impl::RegisterAccessibilityPositionPropertyNotification()
+{
+ if(mIsAccessibilityPositionPropertyNotificationSet)
+ {
+ return;
+ }
+ // set default value until first move of object is detected
+ mAccessibilityLastScreenRelativeMoveType = Dali::Accessibility::ScreenRelativeMoveType::OUTSIDE;
+ // recalculate mAccessibilityLastScreenRelativeMoveType accordingly to the initial position
+ CheckHighlightedObjectGeometry();
+ mAccessibilityPositionNotification = mControlImpl.Self().AddPropertyNotification(Actor::Property::WORLD_POSITION, StepCondition(1.0f, 1.0f));
+ mAccessibilityPositionNotification.SetNotifyMode(PropertyNotification::NOTIFY_ON_CHANGED);
+ mAccessibilityPositionNotification.NotifySignal().Connect(this, [this](PropertyNotification&) { CheckHighlightedObjectGeometry(); });
+ mIsAccessibilityPositionPropertyNotificationSet = true;
+}
+
+void Control::Impl::UnregisterAccessibilityPositionPropertyNotification()
+{
+ mControlImpl.Self().RemovePropertyNotification(mAccessibilityPositionNotification);
+ mIsAccessibilityPositionPropertyNotificationSet = false;
+}
+