[Phpmyadmin-devel] New sprites implementation

Marc Delisle marc at infomarc.info
Mon Oct 3 15:18:44 CEST 2011

Rouslan Placella a écrit :
> On Mon, 2011-10-03 at 06:21 -0400, Marc Delisle wrote:
>> Le 2011-10-02 10:23, Rouslan Placella a écrit :
>>> On Sun, 2011-10-02 at 06:23 -0400, Marc Delisle wrote:
>>>> Le 2011-10-01 08:01, Rouslan Placella a écrit :
>>>>> On Sat, 2011-10-01 at 06:54 -0400, Marc Delisle wrote:
>>>>>> Le 2011-09-30 14:59, Rouslan Placella a écrit :
>>>>>>> Hi there,
>>>>>>> I've just pushed the new sprites implementation to master and updated
>>>>>>> the relevant wiki page [1]. Please take the time to read this
>>>>>>> documentation. Thank you.
>>>>>>> If you have any feedback on the matter, I'd love to hear it.
>>>>>>> Rouslan
>>>>>>> [1]: http://wiki.phpmyadmin.net/pma/Icons/Sprites_Usage
>>>>>> Rouslan,
>>>>>> after using generate_sprites, all my icons now have a black background.
>>>>>> Maybe this is related to the numerous errors I get, such as:
>>>>>> identify: invalid colormap index `s_vars.png' @
>>>>>> error/image.c/SyncImage/3899.
>>>>> Hi Marc,
>>>>> Well, that's not good. Although I doubt that the errors from 'identify'
>>>>> have anything to do with the issue, since that program is only used to
>>>>> extract the height and width from image files. Do you get any errors
>>>>> from 'convert'?
>>>>> Anyway, under what OS were you running the script? What does "convert
>>>>> --version" say? Also can you run the below commands and let me know what
>>>>> the output is and what the resulting images look like?
>>>> Version: ImageMagick 6.6.1-5 2010-04-28 Q16 http://www.imagemagick.org
>>>>> cd /path/to/phpmyadmin/
>>>>> convert -size 16x16 xc:none test1.png
>>>>> convert test1.png themes/pmahomme/img/b_drop.png -composite test2.png
>>>>> identify -ping test1.png
>>>> test1.png PNG 16x16 16x16+0+0 16-bit PseudoClass 65536c 229B 0.000u 0:00.000
>>>>> identify -ping test2.png
>>>> test2.png PNG 16x16 16x16+0+0 16-bit DirectClass 1.31KB 0.000u 0:00.000
>>> But what do test1.png and test2.png look like? Do they have a black
>>> background or a transparent one?
>> Sorry, I missed that part of the question. test1.png has a transparent
>> background; test2.png has a black background.
> I've tried compiling the exact version of ImageMagick that you are using
> and I still don't experience your issue.
> Anyway, it looks like the alpha channel is being discarded for some
> reason. Could you try the below commands to see if the composition will
> work by explicitly turning the alpha channel on and let me know what the
> resulting images look like (and any errors that you might get)? Thanks.
> cd /path/to/phpmyadmin/
> convert -size 16x16 xc:none test1.png
> convert test1.png themes/pmahomme/img/b_drop.png -composite -alpha on
> test2.png
> convert test1.png themes/pmahomme/img/b_drop.png -composite -alpha set
> test3.png

Both test2 and test3 have a black background.
> I'm also still wondering if you running the script on linux or msys...


I believe that this will be a problem only for someone 
creating/modifying icons so we can wait to see if others have the problem.

Marc Delisle

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