Re: colorizing

[Hans Hagen <pragma@wxs.nl>]

At 06:17 PM 1/28/2002 +0100, Henning Hraban Ramm wrote:

>Is it possible to "colorize" bitmap or greyscale images with ConTeXt?

no

>e.g. I use a bitmap logo that should show exactly the same color as defined
>for backgrounds. If I define the "same" color with PhotoShop it looks

ah, so it's tuned for some kind of paper

>slightly different. Further I'd like to place it white on color.
>
>I know that at least PDF 1.4 enables such with "DeviceN" colorspaces,
>but I found no way to do it with ConTeXt.

many features of pdf can be applied (for instance, here i have a 
rudimentary system for outline fonts, but i still need to adapt the color 
driver for independent stroke and fill colors at the user level, some day 
...; btw: quite funny to be able to search for invisible text).

>It should as easy as in other functions to assign foreground and background
>color, maybe even transparency?

when i browsed the specs some time ago i got the impression that this is 
doable, but so far i didn't need it (although i will probably need it 
soon). Building ther sources is trivial (once i understand it) and we can 
probably hook things into the resource dict of graphics, but cooking up a 
proper interface will take me some time. We can look into the specs at the 
coming dante meeting to see what can be done.

Hans
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