On 9/13/05, Jeffrey Brent McBeth <[EMAIL PROTECTED]> wrote: > On Tue, Sep 13, 2005 at 05:30:21PM +0300, Diaa Sami wrote: > > > > that's exactly what I wanted, I looked into PNG docs, and I found out > > that there are two functions responsible for this, which are > > png_get_tRNS and png_set_tRNS. > > Yup. For just about any chunk, there is a get/set pair in the reference > implementation. The GIMP could easily figure out when the alpha is binary > (to use tRNS rather than RGBA), but picking out an unused color to represent > transparent that is acceptible to the user, applications, and further > editing is an impossible (or difficult) task.
This sounds like something that should be only created if it's set by the user -- e.g. a save option. Although then it'd have to be specified every time, which might be annoying. In that case, you'd still see the colour that acts transparent in GIMP - just not when it's actually edited. That said, that might be inconvienent for those who use GIMP as an image viewer, and confuddle users of GAP. > IE ignores tRNS when you aren't in palette mode, anytime you added some of > that color to an image, it would turn transparent seperate from what you > expect, etc. So logically, should we even be using tRNS in PNG anyway? IE is one of the most commonly used browsers, AFAIK... -- ~Mike - Just my two cents - No man is an island, and no man is unable. _______________________________________________ Gimp-user mailing list Gimp-user@lists.xcf.berkeley.edu http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
