void IEndDragHandler.OnEndDrag(PointerEventData eventData)
{
if (!QUIEventUtil.Interactable(gameObject) || !mDragBegan)
{
return;
}
UIEventLockManager.Instance.SendMsg(new UIUnlockObjEventMsg(gameObject));
if (mCurState == State.Scroll)
{
if (null != ScrollRect)
{
mOnScrollEndedEvent.InvokeGracefully();
ExecuteEvents.Execute <ScrollRect>(ScrollRect.gameObject, eventData,
delegate(ScrollRect handler, BaseEventData data)
{
handler.OnEndDrag(data as PointerEventData);
});
}
mCurState = State.Idle;
}
else
{
mOnDragEndedEvent.InvokeGracefully();
}
mDragBegan = false;
}
void IBeginDragHandler.OnBeginDrag(PointerEventData eventData)
{
if (!QUIEventUtil.Interactable(gameObject))
{
return;
}
UIEventLockManager.Instance.SendMsg(new UILockObjEventMsg(gameObject));
mCurrentDragCalculated = false;
mDragBeganMousePos = (transform.parent as RectTransform).GetLocalPosInRect(QUIManager.Instance.RootCanvas.worldCamera);
mDragBegan = true;
}
void IDragHandler.OnDrag(PointerEventData eventData)
{
if (!QUIEventUtil.Interactable(gameObject) || !mDragBegan)
{
return;
}
if (!mCurrentDragCalculated && mCurState == State.Idle)
{
var offsetFromBegan = (transform.parent as RectTransform).GetLocalPosInRect(QUIManager.Instance.RootCanvas.worldCamera) - mDragBeganMousePos;
if (offsetFromBegan.magnitude > 10)
{
mCurrentDragCalculated = true;
if (offsetFromBegan.x > 0 && offsetFromBegan.x > Mathf.Abs(offsetFromBegan.y))
{
mCurState = State.Drag;
mOnDragBeganEvent.InvokeGracefully();
}
else
{
mCurState = State.Scroll;
if (null != ScrollRect)
{
ExecuteEvents.Execute <ScrollRect>(ScrollRect.gameObject, eventData,
delegate(ScrollRect handler, BaseEventData data)
{
handler.OnBeginDrag(data as PointerEventData);
});
}
}
return;
}
}
else if (!mCurrentDragCalculated && mCurState == State.Drag)
{
mOnDragBeganEvent.InvokeGracefully();
mCurrentDragCalculated = true;
return;
}
switch (mCurState)
{
case State.Drag:
mOnDragEvent.InvokeGracefully();
break;
case State.Scroll:
if (null != ScrollRect)
{
mOnScrollEvent.InvokeGracefully();
ExecuteEvents.Execute <ScrollRect>(ScrollRect.gameObject, eventData,
delegate(ScrollRect handler, BaseEventData data)
{
handler.OnDrag(data as PointerEventData);
});
}
break;
}
}
