private void UpdatePreviewBox()
{
if (previewTimer == null)
{
previewTimer = new Timer((obj) =>
{
if (previewOutOfDate && !working)
{
working = true;
previewOutOfDate = false;
var result = RotationTransform.Perform((Bitmap)workingImage.Clone());
try
{
Invoke(new MethodInvoker(() =>
{
if (pictureBox.Image != null)
{
pictureBox.Image.Dispose();
}
pictureBox.Image = result;
}));
}
catch (ObjectDisposedException)
{
}
working = false;
}
}, null, 0, 100);
}
previewOutOfDate = true;
}
public async Task RotateFlip(IEnumerable <int> selection, RotateFlipType rotateFlipType)
{
var images = Images.ElementsAt(selection).ToList();
await Task.Factory.StartNew(() =>
{
foreach (ScannedImage img in images)
{
lock (img)
{
var transform = new RotationTransform(rotateFlipType);
img.AddTransform(transform);
var thumb = img.GetThumbnail();
if (thumb != null)
{
img.SetThumbnail(transform.Perform(thumb));
}
}
}
});
}