/// <summary>
/// Find current target.
/// </summary>
/// <param name="eventData">Event data.</param>
protected virtual void FindCurrentTarget(PointerEventData eventData)
{
var new_target = FindTarget(eventData);
if (new_target != CurrentTarget)
{
if (CurrentTarget != null)
{
CurrentTarget.DropCanceled(Data, eventData);
}
OnTargetChanged(CurrentTarget, new_target);
}
if (new_target != null)
{
// set cursor can drop
Cursor.SetCursor(AllowDropCursor, AllowDropCursorHotSpot, Compatibility.GetCursorMode());
}
else
{
// set cursor fail drop
Cursor.SetCursor(DeniedDropCursor, DeniedDropCursorHotSpot, Compatibility.GetCursorMode());
}
CurrentTarget = new_target;
}
/// <summary>
/// When dragging is occurring this will be called every time the cursor is moved.
/// </summary>
/// <param name="eventData">Current event data.</param>
public virtual void OnDrag(PointerEventData eventData)
{
if (!IsDragged)
{
return;
}
oldTarget = currentTarget;
currentTarget = FindTarget(eventData);
if ((oldTarget != null) && (currentTarget != oldTarget))
{
oldTarget.DropCanceled(Data, eventData);
}
if (currentTarget != null)
{
// set cursor can drop
Cursor.SetCursor(AllowDropCursor, AllowDropCursorHotSpot, Compatibility.GetCursorMode());
}
else
{
// set cursor fail drop
Cursor.SetCursor(DeniedDropCursor, DeniedDropCursorHotSpot, Compatibility.GetCursorMode());
}
Vector2 point;
if (!RectTransformUtility.ScreenPointToLocalPointInRectangle(CanvasTransform as RectTransform, Input.mousePosition, eventData.pressEventCamera, out point))
{
return;
}
DragPoint.localPosition = point;
}
