/// <summary>
/// 释放拖拽
/// </summary>
void ReleaseCapture()
{
ReleasePointerCaptures();
_pointerID = null;
_state = MouseVisualState.Normal;
ChangeVisualState();
}
/// <summary>
/// 鼠标离开
/// </summary>
/// <param name="e"></param>
protected override void OnPointerExited(PointerRoutedEventArgs e)
{
base.OnPointerExited(e);
if (Owner != null && _pointerID == null)
{
_state = MouseVisualState.Normal;
ChangeVisualState();
}
}
/// <summary>
/// 鼠标进入状态
/// </summary>
/// <param name="e"></param>
protected override void OnPointerEntered(PointerRoutedEventArgs e)
{
base.OnPointerEntered(e);
if (Owner != null && !IsSelected && _pointerID == null)
{
_state = MouseVisualState.Enter;
ChangeVisualState();
}
}
/// <summary>
/// 鼠标按下
/// </summary>
/// <param name="e"></param>
protected override void OnPointerPressed(PointerRoutedEventArgs e)
{
base.OnPointerPressed(e);
if (Owner != null && CapturePointer(e.Pointer))
{
e.Handled = true;
_pointerID = e.Pointer.PointerId;
_state = MouseVisualState.Pressed;
Focus(FocusState.Programmatic);
if (!IsSelected)
{
IsSelected = true;
}
else if (Owner.AllowSwapItem)
{
ChangeVisualState();
}
}
}
