/// <summary>
/// Updates the thumbnail options and the right-click label.
/// </summary>
private void UpdateThubmnail()
{
if (_thumbnail != null && !_thumbnail.IsInvalid)
{
try {
//Get thumbnail size and attempt to fit to control, with padding
Size sourceSize = ThumbnailPixelSize;
_thumbnailSize = sourceSize.Fit(Size);
_padWidth = (Size.Width - _thumbnailSize.Width) / 2;
_padHeight = (Size.Height - _thumbnailSize.Height) / 2;
System.Diagnostics.Debug.WriteLine("Fitting {0} inside {1} as {2}. Padding {3},{4}.", sourceSize, Size, _thumbnailSize, _padWidth, _padHeight);
var target = new Rectangle(_padWidth, _padHeight, _thumbnailSize.Width, _thumbnailSize.Height);
Rectangle source = (_regionEnabled) ? _currentRegion.ComputeRegionRectangle(_thumbnail.GetSourceSize()) : new Rectangle(Point.Empty, _thumbnail.GetSourceSize());
_thumbnail.Update(target, source, ThumbnailOpacity, true, true);
}
catch {
//Any error updating the thumbnail forces to unset (handle may not be valid anymore)
UnsetThumbnail();
return;
}
}
}
