Support and General Use > Theming and Appearance Customization

help with anti-aliasing on icons

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Chuck McKnight:
I am currently working on a new icon set for Rockbox. I am making the icons originally as SVGs using Inkscape, then scaling them down to icon size. The problem I am having, however, is getting the edges anti-aliased correctly. Anyone know a good technique to get all the edges a neutral color?

(BTW, I am trying to avoid anti-aliasing to a specific color, because I want the same icon set to be usable with any backdrop)

hhannah:
I'm not an expert, but try placing the icons on the neutral colour background (red 255 green 0 blue 255) BEFORE reducing them - if you didn't do that already -  that might work, or at least "less cleaning" should be needed

Edit: I tried what I suggested and it doesn't completely work... the post below is right...

Chronon:
Chuck, what do you mean by anti-alias to a neutral color?  The color (255, 0, 255) is interpreted as transparent.  However, you can't really anti-alias to it because colors that are close, but not identical to it will show up as magenta.  Transparency is fully on or off: There's no implementation of alpha channels in Rockbox currently.

The best you can do is to pick a background color and design your icons for use with that.

Chuck McKnight:
Hmm, well I'll fool around with it a bit more and see what I can get. I started trying to anti-alias against a solid gray background, and that seems to be working better anyway.

BTW, has there been any talk of future use of alpha channels in Rockbox?


Edit: I asked on the Inkscape forums, and someone there recommended using GIMP to threshold the Alpha, and that worked perfectly!  8-) So case closed, I guess.



--- Quote ---*Just a reminder to modify your post instead of posting a new one if no one has replied.
--- End quote ---
*Sorry, I visit multiple forums, all with different posting regulations, so I confuse them at times. Post fixed now.  ;)

Chronon:
Nice.  That info might be handy on the CustomIcons page, or maybe a tutorial page linked from there.

*Just a reminder to modify your post instead of posting a new one if no one has replied.

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