Re: Color fonts

From: Matthias Clasen <matthias clasen gmail com>
To: Behdad Esfahbod <behdad behdad org>
Cc: "mclasen redhat com" <mclasen redhat com>, Christian Hergert <christian hergert me>, Parag Nemade <pnemade redhat com>, cairo <cairo cairographics org>, "Gtk+ Developers" <gtk-devel-list gnome org>, Bastien Nocera <hadess hadess net>
Subject: Re: Color fonts
Date: Fri, 30 Jun 2017 17:07:24 -0400

On Thu, Jun 29, 2017 at 11:18 PM, Matthias Clasen <matthias clasen gmail com> wrote:

I had another go at this here: https://github.com/matthiasclasen/cairo/tree/emoji-again

I've spent some more time on this branch. It now uses paint only for clusters that consists
purely of color glyphs, rewriting the inputs to remove handled clusters, and then falls through

the show_glyphs code paths.

It seems to work ok, at least as far as gedit / pango let me test easily. I'm less confident that
the CAIRO_TEXT_CLUSTER_FLAG_BACKWARD case is entirely correct, that is hard for me

to judge.

An unrelated observation: pango treats the gap between an emoji modifier base and a variant selector

as a cursor position. That looks like a bug.

References:
- Color fonts
  - From: Behdad Esfahbod
- Re: Color fonts
  - From: Matthias Clasen
- Re: Color fonts
  - From: Matthias Clasen

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