On Sat, Jul 29, 2017 at 11:58 AM, Uli Schlachter <psyc...@znc.in> wrote:
> Hi Behdad > > I don't think that is my decision to make. When thinking about "fonts in > cairo", I'm thinking "Behdad". I'm just asking weird questions from the > sideline. :-) > Thanks. :-) Pushed!!!! At least ten people already asked me "what's up with emoji" at GUADEC... > Uli > > P.S.: How relevant and up to date is the CC list here? I always get a > "your message to gtk-devel-list awaits moderator approval"-mail when > replying to this thread... > My messages go through, yours probably don't because you are not a member. It's valuable still. Cheers, b > On 28.07.2017 16:38, Behdad Esfahbod wrote: > > Uli, > > > > Can we commit this? I don't think waiting another few years will result > in > > a superior patchset. :) > > > > Cheers, > > > > behdad > > > > On Wed, Jul 19, 2017 at 1:53 AM, Behdad Esfahbod <beh...@behdad.org> > wrote: > > > >> Right. In the future we would want to make it show glyphs in the input > >> order, ie. not separate color vs non-color. That's the order required > by > >> CSS for example. In a show-text-glyphs call with > CAIRO_TEXT_CLUSTER_FLAG_BACKWARD, > >> it might be desirable to show back-to-front. > >> > >> On Tue, Jul 18, 2017 at 1:59 PM, Matthias Clasen < > >> matthias.cla...@gmail.com> wrote: > >> > >>> On Sat, Jul 15, 2017 at 4:05 AM, Uli Schlachter <psyc...@znc.in> > wrote: > >>> > >>>> On 07.07.2017 15:23, Matthias Clasen wrote: > >>>>> On Sat, Jul 1, 2017 at 2:25 AM, Uli Schlachter <psyc...@znc.in> > wrote: > >>>>>> On 30.06.2017 17:29, Behdad Esfahbod wrote: > >>>>>>> On Jun 30, 2017 7:51 PM, "Matthias Clasen" <mcla...@redhat.com> > >>>> wrote: > >>>>>>> On Fri, 2017-06-30 at 17:02 +0200, Uli Schlachter wrote: > >>>>>>>> On 28.06.2017 14:23, Behdad Esfahbod wrote: > >>>>>>>>> All of you have asked me about the status of color fonts in > >>>>>>>>> cairo. There's > >>>>>>>>> some discussion here: > >>>>>>>> > >>>>>>>> what was the solution to make this fit into cairo's drawing model? > >>>>>>>> Text > >>>>>>>> / glyphs are used as a mask and a mask does not have colors. > >>>>>>>> > >>>>>>> > >>>>>>> There is no solution to that. The assumption in cairo's drawing > model > >>>>>>> about glyphs/fonts has simply been invalidated by reality. > >>>>>>> > >>>>>>> > >>>>>>> Correct. > >>>>>> > >>>>>> Okay... so what is the new model? What happens when I draw a color > >>>> glyph > >>>>>> with operator XOR and a red source? > >>>>> > >>>>> > >>>>> The red source is ignored for color glyphs because they are used as > the > >>>>> source. > >>>> > >>>> Hi again, > >>>> > >>>> I just came up with another question: How are overlapping glyphs > handled? > >>>> > >>>> Let's say I have a red glyph and a blue glyph and I draw them in such > a > >>>> way that they overlap. Let's say this additionally overlaps with a > >>>> non-colored glyph in the same position and I use a green source with > 50% > >>>> alpha (cairo_set_source_rgba(cr, 0, 1, 0, 0.5)). > >>>> > >>>> What's the visible result? > >>>> > >>>> > >>> Here is what my implementation does: It renders the color glyphs, in > >>> order, followed by the non-color glyphs. > >>> > >>> In practice, I don't think the case of mixed color and non-color glyphs > >>> in the same call will be all that common. > >>> Most apps will explicitly set a color font just for the emoji and they > >>> won't render regular text with an emoji font, > >>> with the result that runs of color glyphs and non-color glyphs will > >>> typically be in separate calls. > >>> > >> > >> > >> > >> -- > >> behdad > >> http://behdad.org/ > >> > > > > > > > > > -- > "Why make things difficult, when it is possible to make them cryptic > and totally illogical, with just a little bit more effort?" -- A. P. J. > -- behdad http://behdad.org/
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