public HistoryItem(Surface surface, Rectangle bounds)
{
DeltaRect = Rectangle.Intersect(surface.Bounds, bounds);
Surface temp;
if (DeltaRect.Width * DeltaRect.Height > 0)
{
temp = new Surface(DeltaRect.Size);
temp.CopySurface(surface, temp.Bounds.Location, DeltaRect);
}
else
{
temp = new Surface(1, 1);
DeltaRect.Width = 1;
DeltaRect.Height = 1;
}
DeltaSurface = new DiskBackedSurface(temp, true);
DeltaSurface.ToDisk();
temp.Dispose();
}
public HistoryItem(Surface surface)
{
DeltaRect = surface.Bounds;
DeltaSurface = new DiskBackedSurface(surface, false);
DeltaSurface.ToDisk();
}