Re: Other graphic issues

[Eric Wasylishen]

I wasn't able to reproduce this either, but I committed a patch which gets rid 
of the artifacts in ImageSelection-test.

Eric

On 2011-09-06, at 6:39 PM, Germán Arias wrote:

> I will check the gorm files. Anyway I'm thinking reimplement the panel.
> If I will add more elements in each release, will be so difficult
> maintain the gorm file. Thanks.
> 
> On mar, 2011-09-06 at 22:47 +0200, Fred Kiefer wrote:
>> I think Eric is correct here. I checked the Grom file and the buttons 
>> are positioned on half pixels. We need to change the code to get more 
>> reliable results here, but for now it seems easier to adjust FisicaLab.
>> 
>> Fred
>> 
>> On 06.09.2011 20:44, Eric Wasylishen wrote:
>>> I haven't had a look at Fisicalab yet, but something which may or may not 
>>> be related is the artifacting I get in GSTest/ImageSelection-test. It 
>>> happens when moving the sliders to adjust the image size; the image can 
>>> leave lines as it's being resized, but the same code works fine on OS X.
>>> 
>>> The artifacting seems to to come from calling [aView 
>>> setNeedsDisplayInRect:] with a non-integral rect. I suspect at some point 
>>> the rect coordinates are being floor()'ed, which would be incorrect. If we 
>>> mark a (possibly non-integral) region of a view as needing to be redrawn, 
>>> at some point we'll need to compute a pixel aligned version that completely 
>>> encloses the original rect.
>>> 
>>> -Eric
>>> 
>>> On 2011-09-05, at 3:47 AM, Fred Kiefer wrote:
>>> 
>>>> On 05.09.2011 02:26, Germán Arias wrote:
>>>>> Currently when I select an element in FisicaLab an ugly lines appears.
>>>>> See attached image. I'm using cairo backend.
>>>> 
>>>> I tried to reproduce this behaviour with Fisicalab 0.2.1 and current SVN 
>>>> GNUstep code and failed to get these artefacts. I am using the cairo 
>>>> backend as well.
>>>> 
>>>> Could you please give some more details on how to reproduce this?
>> 
>> 
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