[cairo] Color fonts
behdad at behdad.org
Sun Aug 13 21:59:08 UTC 2017
On Sun, Aug 13, 2017 at 5:06 AM, Adrian Johnson <ajohnson at redneon.com>
> On 10/08/17 08:13, Behdad Esfahbod wrote:
> > On Sun, Jul 30, 2017 at 12:20 AM, Adrian Johnson <ajohnson at redneon.com
> > <mailto:ajohnson at redneon.com>> wrote:
> > Does it work with user fonts?
> > 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.
> > */
> > We now have the argb glyph cache. We have to do some tricks to identify
> > color glyphs. Still, interaction with subpixel rendering remains
> > 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.
> That would be the easiest way to get nice PDF/PS output. If you could
> use the original CBDT images instead of 72ppi scaled images the output
> would be even better.
> Also, the current implementation has a regression. If a font contains
> any color glyphs, every glyph in the font will be rendered as an image
> instead of show_glyphs.
Does it? It's not supposed to be that way.
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