/// <summary>
/// Raises the begin drag event.
/// </summary>
/// <param name="eventData">Event data.</param>
public void OnBeginDrag(PointerEventData eventData)
{
Vector2 point;
processDrag = false;
if (!RectTransformUtility.ScreenPointToLocalPointInRectangle(RectTransform, eventData.pressPosition, eventData.pressEventCamera, out point))
{
return;
}
var index = transform.GetSiblingIndex();
if (index == 0 || transform.parent.childCount == (index + 1))
{
return;
}
Cursor.SetCursor(CursorTexture, CursorHotSpot, Utilites.GetCursorMode());
cursorChanged = true;
processDrag = true;
if (mode == SplitterMode.Auto)
{
leftTarget = transform.parent.GetChild(index - 1) as RectTransform;
rightTarget = transform.parent.GetChild(index + 1) as RectTransform;
}
LeftTargetElement.preferredWidth = leftTarget.rect.width;
LeftTargetElement.preferredHeight = leftTarget.rect.height;
RightTargetElement.preferredWidth = rightTarget.rect.width;
RightTargetElement.preferredHeight = rightTarget.rect.height;
summarySize = new Vector2(leftTarget.rect.width + rightTarget.rect.width, leftTarget.rect.height + rightTarget.rect.height);
OnStartResize.Invoke(this);
}
/// <summary>
/// Called by a BaseInputModule when a drag is ended.
/// </summary>
/// <param name="eventData">Current event data.</param>
public virtual void OnEndDrag(PointerEventData eventData)
{
if (!IsDragged)
{
return;
}
var target = FindTarget(eventData);
if (target != null)
{
target.Drop(Data, eventData);
Dropped(true);
}
else
{
Dropped(false);
}
IsDragged = false;
Cursor.SetCursor(DefaultCursorTexture, DefaultCursorHotSpot, Utilites.GetCursorMode());
}
/// <summary>
/// Update cursor.
/// </summary>
protected virtual void LateUpdate()
{
if (!IsCursorOver)
{
return;
}
if (processDrag)
{
return;
}
if (CursorTexture == null)
{
return;
}
if (!Input.mousePresent)
{
return;
}
Vector2 point;
if (!RectTransformUtility.ScreenPointToLocalPointInRectangle(RectTransform, Input.mousePosition, CurrentCamera, out point))
{
return;
}
var rect = RectTransform.rect;
if (rect.Contains(point))
{
cursorChanged = true;
Cursor.SetCursor(CursorTexture, CursorHotSpot, Utilites.GetCursorMode());
}
else if (cursorChanged)
{
cursorChanged = false;
Cursor.SetCursor(DefaultCursorTexture, DefaultCursorHotSpot, Utilites.GetCursorMode());
}
}
/// <summary>
/// Raises the drag event.
/// </summary>
/// <param name="eventData">Event data.</param>
public void OnDrag(PointerEventData eventData)
{
if (!processDrag)
{
return;
}
if (canvas == null)
{
throw new MissingComponentException(gameObject.name + " not in Canvas hierarchy.");
}
Cursor.SetCursor(CursorTexture, CursorHotSpot, Utilites.GetCursorMode());
Vector2 p1;
RectTransformUtility.ScreenPointToLocalPointInRectangle(RectTransform, eventData.position, CurrentCamera, out p1);
Vector2 p2;
RectTransformUtility.ScreenPointToLocalPointInRectangle(RectTransform, eventData.position - eventData.delta, CurrentCamera, out p2);
var delta = p1 - p2;
if (delta.x > 0)
{
leftTarget.preferredWidth = Mathf.Min(leftTarget.preferredWidth + delta.x, widthLimit - rightTarget.minWidth);
rightTarget.preferredWidth = widthLimit - leftTarget.preferredWidth;
}
else
{
rightTarget.preferredWidth = Mathf.Min(rightTarget.preferredWidth - delta.x, widthLimit - leftTarget.minWidth);
leftTarget.preferredWidth = widthLimit - rightTarget.preferredWidth;
}
LayoutUtilites.UpdateLayout(layout);
if (OnDragUpdate)
{
Resize();
}
}
void LateUpdate()
{
if (processDrag)
{
return;
}
if (CursorTexture == null)
{
return;
}
if (!Input.mousePresent)
{
return;
}
Vector2 point;
bool in_draggable_region = false;
if (!RectTransformUtility.ScreenPointToLocalPointInRectangle(RectTransform, Input.mousePosition, CurrentCamera, out point))
{
return;
}
var rect = RectTransform.rect;
if (!rect.Contains(point))
{
return;
}
point += new Vector2(rect.width * RectTransform.pivot.x, 0);
int i = 0;
foreach (var child in children)
{
var is_first = i == 0;
if (!is_first)
{
in_draggable_region = CheckLeft(child, point);
if (in_draggable_region)
{
break;
}
}
var is_last = i == (children.Count - 1);
if (!is_last)
{
in_draggable_region = CheckRight(child, point);
if (in_draggable_region)
{
break;
}
}
i++;
}
if (in_draggable_region)
{
Cursor.SetCursor(CursorTexture, CursorHotSpot, Utilites.GetCursorMode());
}
else
{
Cursor.SetCursor(DefaultCursorTexture, DefaultCursorHotSpot, Utilites.GetCursorMode());
}
}
