public void Init(ReorderableList reorderableList)
{
_reorderableList = reorderableList;
_rect = GetComponent <RectTransform>();
}
public void OnDrag(PointerEventData eventData)
{
if (!_isDragging)
{
return;
}
if (!isValid)
{
CancelDrag();
return;
}
//Set dragging object on cursor
var canvas = _draggingObject.GetComponentInParent <Canvas>();
Vector3 worldPoint;
RectTransformUtility.ScreenPointToWorldPointInRectangle(canvas.GetComponent <RectTransform>(), eventData.position,
canvas.worldCamera, out worldPoint);
_draggingObject.position = worldPoint;
//Check everything under the cursor to find a ReorderableList
EventSystem.current.RaycastAll(eventData, _raycastResults);
for (int i = 0; i < _raycastResults.Count; i++)
{
_currentReorderableListRaycasted = _raycastResults[i].gameObject.GetComponent <ReorderableList>();
if (_currentReorderableListRaycasted != null)
{
break;
}
}
//If nothing found or the list is not dropable, put the fake element outsite
if (_currentReorderableListRaycasted == null || _currentReorderableListRaycasted.IsDropable == false)
{
RefreshSizes();
_fakeElement.transform.SetParent(_reorderableList.DraggableArea, false);
}
//Else find the best position on the list and put fake element on the right index
else
{
if (_fakeElement.parent != _currentReorderableListRaycasted)
{
_fakeElement.SetParent(_currentReorderableListRaycasted.Content, false);
}
float minDistance = float.PositiveInfinity;
int targetIndex = 0;
float dist = 0;
for (int j = 0; j < _currentReorderableListRaycasted.Content.childCount; j++)
{
var c = _currentReorderableListRaycasted.Content.GetChild(j).GetComponent <RectTransform>();
if (_currentReorderableListRaycasted.ContentLayout is VerticalLayoutGroup)
{
dist = Mathf.Abs(c.position.y - worldPoint.y);
}
else if (_currentReorderableListRaycasted.ContentLayout is HorizontalLayoutGroup)
{
dist = Mathf.Abs(c.position.x - worldPoint.x);
}
else if (_currentReorderableListRaycasted.ContentLayout is GridLayoutGroup)
{
dist = (Mathf.Abs(c.position.x - worldPoint.x) + Mathf.Abs(c.position.y - worldPoint.y));
}
if (dist < minDistance)
{
minDistance = dist;
targetIndex = j;
}
}
RefreshSizes();
_fakeElement.SetSiblingIndex(targetIndex);
_fakeElement.gameObject.SetActive(true);
}
}
