Re: Can NSImageView not antialias a bitmap image?

FROM : Glen Simmons
DATE : Mon Oct 04 19:32:34 2004

On 4 Oct, 2004, at 11:49 AM, Nicko van Someren wrote:

> On 4 Oct 2004, at 17:40, Nicko van Someren wrote:
>

>> On 4 Oct 2004, at 17:16, Glen Simmons wrote:
>>

>>> I'm creating an NSImage from some 1 bit bitmap data using
>>> -[NSBitmapImageRep initWithBitmapDataPlanes:pixelsWide: ...] method.
>>> I then call setScalesWhenResized:YES b/c the NSImageView it's going
>>> to is larger than the original. I then set it in my NSImageView with
>>> setImage:. Nothing special. The problem is that the image looks
>>> fuzzy b/c the NSImageView is antialiasing it for me. How nice,
>>> except that's not what I want. And there's not a way to tell
>>> NSImageView not to antialias as far as I can see. What am I missing?

>>
>> I'm not sure that there is a particular way to switch this off in
>> NSImageView but subclassing the image view with the following drawing
>> method works:
>>
>> - (void)drawRect:(NSRect)rect { ... }

>
> In fact, come to think of it, subclassing the setUpGState is less
> typing and more efficient:
>
> - (void)setUpGState {
>     [super setUpGState];
>     [[NSGraphicsContext currentContext] setImageInterpolation:
> NSImageInterpolationNone];
> }


Thanks for the suggestions. Unfortunately, I'm still seeing some
fuzziness. Might the problem be in the image creation / manipulation?

Glen