Hi BJ,
File a bug with a test case that shows the problem.
I would expect there to be seams due to rounding error if you look in pixie,
but I have never seen a case where it was visible to the eye at actual
scale.
-Ken
On Wed, May 19, 2010 at 1:41 PM, B.J. Buchalter <b...@mhlabs.com> wrote:
> Hi Folks,
>
> I have followed the suggestion in the documentation to use
> NSDrawThreePartImage to draw an extensible image.
>
> The way that I am using it, the image is extensible in the horizontal
> dimension, and may be resized in the vertical dimension, so the individual
> component images are rescaled proportionally. That is as I expect and what I
> am looking for.
>
> Unfortunately, when the vertical scale factor is not 1.0, there are
> (subtle) 1 pixel visual artifacts between the startCap and centerFill images
> or the centerFill and endCap images.
>
> I was under the impression that this API was specifically designed to
> handle this properly.
>
> Is there anything in specific I need to do, or is there a bug in the API's
> implementation.
>
> The code that I am using in my view subclass is as follows:
>
> - (void)drawRect:(NSRect)rect {
> NSRect bnds = [self bounds];
> NSDrawThreePartImage(bnds, left, middle, right, NO,
> NSCompositeSourceOver, 1, NO);
> }
>
> TIA,
>
> B.J. Buchalter
> Metric Halo
> http://www.mhlabs.com
>
>
>
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