protected override void OnParentMouseDown(object sender, MouseButtonEventArgs e)
{
if (e.LeftButton != MouseButtonState.Pressed)
{
return;
}
_startPoint = e.GetPosition(this);
_lastPoint = _startPoint;
if (!BlockConverter.CanConvert(PointOutBlock))
{
return;
}
_canMove = PointOutBlock != null && !BlockConverter.GetLocked(PointOutBlock);
if (_canMove)
{
StartMouseMovementTracking();
var date = AxisXConverter.ScreenToData(0);
var newDate = date.Add(StepMin);
_stepMinDistance = AxisXConverter.DataToScreen(newDate);
}
}
private bool CanScale()
{
if (PointOutBlock == null)
{
return(false);
}
return(BlockConverter.CanConvert(PointOutBlock) && !BlockConverter.GetLocked(PointOutBlock));
}
protected override void OnParentMouseUp(object sender, MouseButtonEventArgs e)
{
if (_canMove)
{
if (PointOutBlock != null && !Equals(GetMoveOffSet(), 0.0d))
{
if (!BlockConverter.CanConvert(PointOutBlock))
{
return;
}
//Henry modified
LayerContainer.OnRaiseAfterMouseUpEvent(this); // presenter is called
//this.FindAncestor<BlockGrid>().InvalidateVisual(); // redraw blockgird only
}
}
EndOperation();
}
protected override void OnParentMouseUp(object sender, MouseButtonEventArgs e)
{
if (PointOutBlock != null && IsMouseDragging())
{
if (!BlockConverter.CanConvert(PointOutBlock))
{
return;
}
//Henry modified
//InvalidateVisual(); // do not change the order, 通过重绘改变 DropedPlacement
if (!InvalidPlacement && DropedPlacement != null)
{
LayerContainer.OnRaiseAfterMouseUpEvent(this);
}
}
EndOperation();
}