<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Sun, Jul 30, 2017 at 12:20 AM, Adrian Johnson <<a href="mailto:ajohnson@redneon.com" target="_blank">ajohnson@redneon.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Does it work with user fonts? </blockquote><div> </div><div>Not yet. There's a comment in cairo-user-font.c: /* TODO * extend the glyph cache to support argb glyphs. * need to figure out the semantics and interaction with subpixel * rendering first. */ </div><div>We now have the argb glyph cache. We have to do some tricks to identify color glyphs. Still, interaction with subpixel rendering remains ambiguous. </div><div>When we do fix the above, I like to make cairo-surface.c wrap OpenType color glyphs into a user-font before drawing. This way we can still get original text to be embedded in PDF whereas current implementation just draws them as images and loses text. </div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"> On 30/07/17 01:00, Behdad Esfahbod wrote: > On Sat, Jul 29, 2017 at 11:58 AM, Uli Schlachter <<a href="mailto:psychon@znc.in">psychon@znc.in</a> > <mailto:<a href="mailto:psychon@znc.in">psychon@znc.in</a>>> 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 > <<a href="mailto:behdad@behdad.org">behdad@behdad.org</a> <mailto:<a href="mailto:behdad@behdad.org">behdad@behdad.org</a>>> 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 < > >> <a href="mailto:matthias.clasen@gmail.com">matthias.clasen@gmail.com</a> <mailto:<a href="mailto:matthias.clasen@gmail.com">matthias.clasen@gmail.com</a>>> wrote: > >> > >>> On Sat, Jul 15, 2017 at 4:05 AM, Uli Schlachter <<a href="mailto:psychon@znc.in">psychon@znc.in</a> > <mailto:<a href="mailto:psychon@znc.in">psychon@znc.in</a>>> wrote: > >>> > >>>> On 07.07.2017 15:23, Matthias Clasen wrote: > >>>>> On Sat, Jul 1, 2017 at 2:25 AM, Uli Schlachter <<a href="mailto:psychon@znc.in">psychon@znc.in</a> > <mailto:<a href="mailto:psychon@znc.in">psychon@znc.in</a>>> wrote: > >>>>>> On 30.06.2017 17:29, Behdad Esfahbod wrote: > >>>>>>> On Jun 30, 2017 7:51 PM, "Matthias Clasen" > <<a href="mailto:mclasen@redhat.com">mclasen@redhat.com</a> <mailto:<a href="mailto:mclasen@redhat.com">mclasen@redhat.com</a>>> <div class="gmail-HOEnZb"><div class="gmail-h5">> >>>> 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 > >> <a href="http://behdad.org/" rel="noreferrer" target="_blank">http://behdad.org/</a> > >> > > > > > > > > > -- > "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 > <a href="http://behdad.org/" rel="noreferrer" target="_blank">http://behdad.org/</a> > > </div></div></blockquote></div> -- <div class="gmail_signature">behdad <a href="http://behdad.org/" target="_blank">http://behdad.org/</a></div> </div></div>