protected void Invalidate(InvalidateMode mode)
{
if (_layoutSuspended)
{
return;
}
if (mode == InvalidateMode.Measure)
{
_arrangeIsDirty = true;
_renderIsDirty = true;
if (!_measureIsDirty)
{
_measureIsDirty = true;
Parent?.Invalidate(mode);
Invalidated?.Invoke(this, new InvalidatedEventArgs(mode));
}
}
else if (mode == InvalidateMode.Arrange)
{
_renderIsDirty = true;
if (!_arrangeIsDirty)
{
_arrangeIsDirty = true;
Parent?.Invalidate(mode);
Invalidated?.Invoke(this, new InvalidatedEventArgs(mode));
}
}
else if (mode == InvalidateMode.Render)
{
if (!_renderIsDirty)
{
_renderIsDirty = true;
Parent?.Invalidate(mode);
Invalidated?.Invoke(this, new InvalidatedEventArgs(mode));
}
}
}
public InvalidatedEventArgs(InvalidateMode mode)
{
Mode = mode;
}
/// <summary> /// Indicates that the contents of the CanvasControl need to be redrawn. /// </summary> /// <param name="mode"> invalidate mode </param> public void Invalidate(InvalidateMode mode = InvalidateMode.None) => this.InvalidateAction?.Invoke(mode);
