Font selection?

Question

Font selection?

lobingera opened this issue 5 years ago · comments

Andreas Lobinger commented 5 years ago

I was looking into #311 and downloading the first time a 1.0.0 Cairo - including the binary dependencies.

I didn't expect this:

as the selected font in sample_text.jl is "Sans".

@giordano Any idea, what went wrong?

Andreas Lobinger commented 4 years ago

I see.

Mosè Giordano · Answer 1 · Sun Dec 22 2019 19:16:45 GMT+0800 (China Standard Time)

No idea 🙂 Is the problem that a font can't be found?

Andreas Lobinger · Answer 2 · Sun Dec 22 2019 19:25:13 GMT+0800 (China Standard Time)

' but the standard CSS2 generic family names, ("serif", "sans-serif", "cursive", "fantasy", "monospace"), are likely to work as expected.' in https://www.cairographics.org/manual/cairo-text.html.
What did you configure for fontconfig?

Mosè Giordano · Answer 3 · Sun Dec 22 2019 19:33:07 GMT+0800 (China Standard Time)

This is the builder for fontconfig: https://github.com/JuliaPackaging/Yggdrasil/blob/326831d236096ac147cece2dd2f53aee28d5b536/F/Fontconfig/build_tarballs.jl

Mosè Giordano · Answer 4 · Mon Dec 23 2019 07:41:27 GMT+0800 (China Standard Time)

Maybe you want to check the list of fonts found by fontconfig with

using Cairo
fc_list = joinpath(dirname(Cairo.Fontconfig_jll.libfontconfig_path), "..", "bin", "fc-list")
run(`$(fc_list)`)

Andreas Lobinger · Answer 5 · Mon Dec 23 2019 22:11:00 GMT+0800 (China Standard Time)

The good news is Fontconfig_jll has reasonable defaults for paths and finds major part of my local fonts, so e.g. "DejaVu Sans" works. I'm still looking into the cairo build, how the defaults for 'sans' 'serif' etc. are build.

Andreas Lobinger · Answer 6 · Mon Dec 23 2019 22:16:10 GMT+0800 (China Standard Time)

lobi@o4:~$ fc-match Sans
DejaVuSans.ttf: "DejaVu Sans" "Book"

vs.

julia> fc_list = joinpath(dirname(Cairo.Fontconfig_jll.libfontconfig_path), "..", "bin", "fc-match")
"/home/lobi/.julia/artifacts/225abdb6d736c3c743dbc9735950947bc064c0cd/lib/../bin/fc-match"

julia> run(`$(fc_list) Sans`)
FreeMono.ttf: "FreeMono" "Regular"
Process(`/home/lobi/.julia/artifacts/225abdb6d736c3c743dbc9735950947bc064c0cd/lib/../bin/fc-match Sans`, ProcessExited(0))

Mosè Giordano · Answer 7 · Mon Dec 23 2019 22:26:57 GMT+0800 (China Standard Time)

Where is DejaVuSans.ttf? Does running fc-cache help?

Andreas Lobinger · Answer 8 · Mon Dec 23 2019 22:41:16 GMT+0800 (China Standard Time)

DejaVu Sans isn't the problem

julia> run(`$(fc_list) "DejaVu Sans"`)
/usr/share/fonts/truetype/dejavu/DejaVuSansCondensed-Oblique.ttf: DejaVu Sans,DejaVu Sans Condensed:style=Condensed Oblique,Oblique
/usr/share/fonts/truetype/dejavu/DejaVuSans-ExtraLight.ttf: DejaVu Sans,DejaVu Sans Light:style=ExtraLight
/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf: DejaVu Sans:style=Book
/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans.ttf: DejaVu Sans:style=Book
/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf: DejaVu Sans:style=Bold
/usr/share/fonts/truetype/dejavu/DejaVuSansCondensed-BoldOblique.ttf: DejaVu Sans,DejaVu Sans Condensed:style=Condensed Bold Oblique,Bold Oblique
/usr/share/fonts/truetype/dejavu/DejaVuSansCondensed.ttf: DejaVu Sans,DejaVu Sans Condensed:style=Condensed,Book
/usr/share/fonts/truetype/dejavu/DejaVuSansCondensed-Bold.ttf: DejaVu Sans,DejaVu Sans Condensed:style=Condensed Bold,Bold
/usr/share/fonts/truetype/dejavu/DejaVuSans-Oblique.ttf: DejaVu Sans:style=Oblique
/usr/share/fonts/truetype/ttf-dejavu/DejaVuSans-Bold.ttf: DejaVu Sans:style=Bold
/usr/share/fonts/truetype/dejavu/DejaVuSans-BoldOblique.ttf: DejaVu Sans:style=Bold Oblique
Process(`/home/lobi/.julia/artifacts/225abdb6d736c3c743dbc9735950947bc064c0cd/lib/../bin/fc-list 'DejaVu Sans'`, ProcessExited(0))

julia> run(`$(fc_match) "DejaVu Sans"`)
DejaVuSans.ttf: "DejaVu Sans" "Book"
Process(`/home/lobi/.julia/artifacts/225abdb6d736c3c743dbc9735950947bc064c0cd/lib/../bin/fc-match 'DejaVu Sans'`, ProcessExited(0))

Mosè Giordano · Answer 9 · Mon Dec 23 2019 22:43:44 GMT+0800 (China Standard Time)

So fc-match Sans is not matching it?

Andreas Lobinger · Answer 10 · Mon Dec 23 2019 22:46:46 GMT+0800 (China Standard Time)

No (#312 (comment)) fc_list is misleading here, fc-match is called.

Mosè Giordano · Answer 11 · Mon Dec 23 2019 22:48:31 GMT+0800 (China Standard Time)

I know, in fact I said fc-match.

Honestly, I'm a bit lost about what's the problem here 🙂

Andreas Lobinger · Answer 12 · Mon Dec 23 2019 22:56:19 GMT+0800 (China Standard Time)

Cairo.jl should support the generic "Sans" "Serif" "Mono", but at least not providing a serif font for Sans.

Mosè Giordano · Answer 13 · Tue Dec 24 2019 07:10:56 GMT+0800 (China Standard Time)

So is this a Fontconfig problem that it's picking up a serif font when asking for a sans-serif one?

Andreas Lobinger · Answer 14 · Sat Jan 04 2020 22:56:12 GMT+0800 (China Standard Time)

At least i see clearer now: The top-level font.conf is read from an artifact and hard coded.

Mosè Giordano · Answer 15 · Tue Jan 07 2020 05:29:57 GMT+0800 (China Standard Time)

Could you please elaborate? I still fail to understand where the problem is exactly.

Mosè Giordano · Answer 16 · Thu Jan 09 2020 08:20:11 GMT+0800 (China Standard Time)

With latest version of Fontconfig_jll (v2.13.1+9), the fonts.conf file is identical to my system fonts.conf, that is a standard Linux configuration:

julia> using Fontconfig_jll

julia> run(`cmp $(Fontconfig_jll.fonts_conf) /etc/fonts/fonts.conf`)
Process(`cmp /home/mose/.julia/artifacts/b20d3b4e71d9209bc0d83410b048e97b4f8c7096/etc/fonts/fonts.conf /etc/fonts/fonts.conf`, ProcessExited(0))

We've now removed all references to paths in the build environment.

Note that calling fc-match with the proper environment gives the expected result:

julia> fc_match() do fc_match_exe
           run(`$fc_match_exe Sans`)
       end
DejaVuSans.ttf: "DejaVu Sans" "Book"
Process(`/home/mose/.julia/artifacts/b20d3b4e71d9209bc0d83410b048e97b4f8c7096/bin/fc-match Sans`, ProcessExited(0))

while directly calling the executable doesn't:

julia> run(`/home/mose/.julia/artifacts/b20d3b4e71d9209bc0d83410b048e97b4f8c7096/bin/fc-match Sans`)
LinLibertine_R.otf: "Linux Libertine O" "Regular"
Process(`/home/mose/.julia/artifacts/b20d3b4e71d9209bc0d83410b048e97b4f8c7096/bin/fc-match Sans`, ProcessExited(0))

We probably need to set some more environment variables to get this working.

Mosè Giordano · Answer 17 · Thu Jan 09 2020 08:31:14 GMT+0800 (China Standard Time)

It turned out it's just LIBPATH:

julia> withenv(Fontconfig_jll.LIBPATH_env => Fontconfig_jll.LIBPATH) do
           run(`/home/mose/.julia/artifacts/b20d3b4e71d9209bc0d83410b048e97b4f8c7096/bin/fc-match Sans`)
       end
DejaVuSans.ttf: "DejaVu Sans" "Book"
Process(`/home/mose/.julia/artifacts/b20d3b4e71d9209bc0d83410b048e97b4f8c7096/bin/fc-match Sans`, ProcessExited(0))

However setting this environment variable doesn't seem to help with sample_text.jl.

ma-laforge · Answer 18 · Mon Mar 23 2020 04:23:11 GMT+0800 (China Standard Time)

I have similar issues.

Observations: Linux

Breaks going from Cairo v0.6.0 to v0.7.0 (Using Julia v1.3.1)
(Still broken for v0.8.0, 1.0.0, 1.0.2).

Does not appear to be caused by changes in Julia itself:
Also broken for Cairo v0.8.0 (Using Julia v1.1.1)
(Cannot go higher than Cairo v0.8.0 on Julia v1.1.1)

EDIT: Observations: Linux + Local Fonts

As mentioned by @lobingera, local fonts still appear to work:
Local fonts work well even with Cairo v1.0.2 on Julia v1.3.1.

Observations: Windows 10

"built-in" font aliases NOT broken, even for Cairo v0.8.0 (Using Julia v1.1.1)

So, it appears NOT to be an issue in Windows (no idea about mac).
EDIT: and is ONLY a problem with the "built-in" font aliases.

Mosè Giordano · Answer 19 · Sun May 31 2020 18:05:07 GMT+0800 (China Standard Time)

@lobingera what I would like to understand, and I hope you can help me on this, is what is choosing the font in Cairo.jl? Can you track down where the selection happens? That could tell us where to look further. As far as I can tell, the executable fc-match isn't called in this package (not directly at least), so looking at it might not be relevant

Andreas Lobinger · Answer 20 · Sun May 31 2020 19:56:53 GMT+0800 (China Standard Time)

afaiu, libcairo actually wants you to select a font and hand over some function handles via the renderer (or the outline conversion if the output isn't a bitmap). However there is a fallback/toy font solution that uses the means provided and configured at built time. If you build on linux this is mostliklely Fontconfig + FreeType. You can see a little bit of that in cairo-ft-font.c _cairo_ft_unscaled_font_create_for_pattern.

So.

I'd expect the provided fc-pattern and fc-match to resolve names like 'serif' and 'sans-serif' to resolve to a TTF that could be loaded.

Mosè Giordano · Answer 21 · Sun May 31 2020 20:35:46 GMT+0800 (China Standard Time)

I'd expect the provided fc-pattern and fc-match to resolve names like 'serif' and 'sans-serif' to resolve to a TTF that could be loaded.

They do:

julia> using Fontconfig_jll

julia> fc_match(cmd -> run(`$cmd Sans`));
DejaVuSans.ttf: "DejaVu Sans" "Book"

julia> fc_match(cmd -> run(`$cmd Serif`));
DejaVuSerif.ttf: "DejaVu Serif" "Book"

Andreas Lobinger · Answer 22 · Mon Jun 01 2020 00:23:32 GMT+0800 (China Standard Time)

Well ...

l1@c5:~$ ./julia-1.4.1/bin/julia 
               _
   _       _ _(_)_     |  Documentation: https://docs.julialang.org
  (_)     | (_) (_)    |
   _ _   _| |_  __ _   |  Type "?" for help, "]?" for Pkg help.
  | | | | | | |/ _` |  |
  | | |_| | | | (_| |  |  Version 1.4.1 (2020-04-14)
 _/ |\__'_|_|_|\__'_|  |  Official https://julialang.org/ release
|__/                   |

shell> cd juliaenvironments/
/home/l1/juliaenvironments

shell> cd Emoji/
/home/l1/juliaenvironments/Emoji

(@v1.4) pkg> activate .
 Activating environment at `~/juliaenvironments/Emoji/Project.toml`

(Emoji) pkg> st
Status `~/juliaenvironments/Emoji/Project.toml`
  [159f3aea] Cairo v1.0.2
  [186bb1d3] Fontconfig v0.4.0
  [a3f928ae] Fontconfig_jll v2.13.1+11

(Emoji) pkg> up
   Updating registry at `~/.julia/registries/General`
   Updating git-repo `https://github.com/JuliaRegistries/General.git`
  Installed Colors ─ v0.12.1
   Updating `~/juliaenvironments/Emoji/Project.toml`
  [159f3aea] ↑ Cairo v1.0.2 ⇒ v1.0.3
   Updating `~/juliaenvironments/Emoji/Manifest.toml`
  [159f3aea] ↑ Cairo v1.0.2 ⇒ v1.0.3
  [3da002f7] ↑ ColorTypes v0.9.0 ⇒ v0.10.3
  [5ae59095] ↑ Colors v0.11.2 ⇒ v0.12.1
  [53c48c17] ↑ FixedPointNumbers v0.7.1 ⇒ v0.8.0
  [a2bd30eb] ↑ Graphics v1.0.1 ⇒ v1.0.2
  [546b0b6d] - X11_jll v1.6.8+5
  [84d6cd60] - Xorg_inputproto_jll v2.3.2+1
  [060dd47b] - Xorg_kbproto_jll v1.0.7+1
  [4f6342f7] ↑ Xorg_libX11_jll v1.6.8+0 ⇒ v1.6.9+2
  [21e99dc2] - Xorg_renderproto_jll v0.11.1+1
  [7c09cfe3] - Xorg_util_macros_jll v1.19.2+1
  [c2e9c405] - Xorg_xcb_proto_jll v1.13.0+1
  [d13bc2ba] - Xorg_xextproto_jll v7.3.0+1
  [46797783] - Xorg_xproto_jll v7.0.31+1

julia> using Fontconfig_jll

julia> fc_match(cmd -> run(`$cmd Sans`));
Fontconfig error: Cannot load default config file
FreeMono.ttf: "FreeMono" "Regular"

julia> fc_match(cmd -> run(`$cmd Serif`));
Fontconfig error: Cannot load default config file
FreeMono.ttf: "FreeMono" "Regular"

Mosè Giordano · Answer 23 · Mon Jun 01 2020 00:28:23 GMT+0800 (China Standard Time)

Try setting

ENV["FONTCONFIG_FILE"] = fonts_conf

Andreas Lobinger · Answer 24 · Mon Jun 01 2020 00:52:27 GMT+0800 (China Standard Time)

julia> ENV["FONTCONFIG_FILE"] = fonts_conf
"/home/l1/.julia/artifacts/82f1062ef35feaa6d4cc426c15574338f12f5fd1/etc/fonts/fonts.conf"

julia> fc_match(cmd -> run(`$cmd Serif`));
FreeMono.ttf: "FreeMono" "Regular"

julia> fc_match(cmd -> run(`$cmd Sans`));
FreeMono.ttf: "FreeMono" "Regular"

Mosè Giordano · Answer 25 · Mon Jun 01 2020 01:19:04 GMT+0800 (China Standard Time)

For example what do you get with

julia> fc_list(cmd -> run(`$cmd "DejaVu Sans"`));
/usr/share/fonts/TTF/DejaVuSansCondensed.ttf: DejaVu Sans,DejaVu Sans Condensed:style=Condensed,Book
/usr/share/fonts/TTF/DejaVuSans-BoldOblique.ttf: DejaVu Sans:style=Bold Oblique
/usr/share/fonts/TTF/DejaVuSansCondensed-Oblique.ttf: DejaVu Sans,DejaVu Sans Condensed:style=Condensed Oblique,Oblique
/usr/share/fonts/TTF/DejaVuSansCondensed-BoldOblique.ttf: DejaVu Sans,DejaVu Sans Condensed:style=Condensed Bold Oblique,Bold Oblique
/usr/share/fonts/TTF/DejaVuSans-ExtraLight.ttf: DejaVu Sans,DejaVu Sans Light:style=ExtraLight
/usr/share/fonts/TTF/DejaVuSans-Oblique.ttf: DejaVu Sans:style=Oblique
/usr/share/fonts/TTF/DejaVuSansCondensed-Bold.ttf: DejaVu Sans,DejaVu Sans Condensed:style=Condensed Bold,Bold
/usr/share/fonts/TTF/DejaVuSans.ttf: DejaVu Sans:style=Book
/usr/share/fonts/TTF/DejaVuSans-Bold.ttf: DejaVu Sans:style=Bold

julia> fc_list(cmd -> run(`$cmd "DejaVu Serif"`));
/usr/share/fonts/TTF/DejaVuSerifCondensed.ttf: DejaVu Serif,DejaVu Serif Condensed:style=Condensed,Book
/usr/share/fonts/TTF/DejaVuSerifCondensed-Bold.ttf: DejaVu Serif,DejaVu Serif Condensed:style=Condensed Bold,Bold
/usr/share/fonts/TTF/DejaVuSerif-Bold.ttf: DejaVu Serif:style=Bold
/usr/share/fonts/TTF/DejaVuSerif.ttf: DejaVu Serif:style=Book
/usr/share/fonts/TTF/DejaVuSerifCondensed-Italic.ttf: DejaVu Serif,DejaVu Serif Condensed:style=Condensed Italic,Italic
/usr/share/fonts/TTF/DejaVuSerif-BoldItalic.ttf: DejaVu Serif:style=Bold Italic
/usr/share/fonts/TTF/DejaVuSerifCondensed-BoldItalic.ttf: DejaVu Serif,DejaVu Serif Condensed:style=Condensed Bold Italic,Bold Italic
/usr/share/fonts/TTF/DejaVuSerif-Italic.ttf: DejaVu Serif:style=Italic

?

Andreas Lobinger · Answer 26 · Mon Jun 01 2020 01:21:58 GMT+0800 (China Standard Time)

julia> fc_list(cmd -> run(`$cmd "DejaVu Sans"`));
/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf: DejaVu Sans:style=Book
/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf: DejaVu Sans:style=Bold

julia> fc_list(cmd -> run(`$cmd "DejaVu Serif"`));
/usr/share/fonts/truetype/dejavu/DejaVuSerif-Bold.ttf: DejaVu Serif:style=Bold
/usr/share/fonts/truetype/dejavu/DejaVuSerif.ttf: DejaVu Serif:style=Book

Mosè Giordano · Answer 27 · Mon Jun 01 2020 01:23:14 GMT+0800 (China Standard Time)

Is this different from what you get with system fc-list?

Andreas Lobinger · Answer 28 · Mon Jun 01 2020 01:27:22 GMT+0800 (China Standard Time)

Hmm.

shell> fc-list | grep Deja

julia>

vs.

l1@c5:~$ fc-list  | grep Deja
/usr/share/fonts/truetype/dejavu/DejaVuSerif-Bold.ttf: DejaVu Serif:style=Bold
/usr/share/fonts/truetype/dejavu/DejaVuSansMono.ttf: DejaVu Sans Mono:style=Book
/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf: DejaVu Sans:style=Book
/usr/share/fonts/truetype/dejavu/DejaVuSans-Bold.ttf: DejaVu Sans:style=Bold
/usr/share/fonts/truetype/dejavu/DejaVuSansMono-Bold.ttf: DejaVu Sans Mono:style=Bold
/usr/share/fonts/truetype/dejavu/DejaVuSerif.ttf: DejaVu Serif:style=Book

Mosè Giordano · Answer 29 · Mon Jun 01 2020 01:28:49 GMT+0800 (China Standard Time)

I'm not sure

shell> fc-list | grep Deja

is doing what you expect. You can't pipe in that way in Julia's shell mode REPL

Andreas Lobinger · Answer 30 · Mon Jun 01 2020 01:31:41 GMT+0800 (China Standard Time)

And i thought, there is a reason, why this is called shell mode ...

Doing a simple fc-list (in julia) i can see in the terminal some DejaVu in the above paths

Mosè Giordano · Answer 31 · Mon Jun 01 2020 01:35:48 GMT+0800 (China Standard Time)

And i thought, there is a reason, why this is called shell mode ...

There is a reason why it's called "Julia's shell mode" and not "your system's shell": it's Julia doing the parsing of the commands, not your shell.

Mosè Giordano · Answer 32 · Sun Jul 05 2020 23:44:53 GMT+0800 (China Standard Time)

With JuliaPackaging/Yggdrasil#1287 I finally get a sans serif font in the example, as expected. Could you please confirm that it works also for you after updating the packages in the registry? You should get Fontconfig_jll v2.13.1+12. This is what I get now:

For comparison, the image in master is

Andreas Lobinger · Answer 33 · Mon Jul 06 2020 01:26:12 GMT+0800 (China Standard Time)

I confirm.

Andreas Lobinger · Answer 34 · Mon Jul 06 2020 01:30:52 GMT+0800 (China Standard Time)

I might come up with some questions, but i put them then to the Yggdrasil issue...