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| | ;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2021 Andrew Tropin <andrew@trop.in>
;;; Copyright © 2021 Xinglu Chen <public@yoctocell.xyz>
;;; Copyright © 2022 Taiju HIGASHI <higashi@taiju.info>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (gnu home services fontutils)
#:use-module (gnu home services)
#:use-module (gnu packages fontutils)
#:use-module (gnu services configuration)
#:use-module (guix gexp)
#:use-module (guix records)
#:use-module (srfi srfi-1)
#:use-module (sxml simple)
#:use-module (ice-9 match)
#:export (home-fontconfig-service-type
home-fontconfig-configuration
default-font))
;;; Commentary:
;;;
;;; Services related to fonts. home-fontconfig service provides
;;; fontconfig configuration, which allows fc-* utilities to find
;;; fonts in Guix Home's profile and regenerates font cache on
;;; activation.
;;;
;;; Code:
(define-record-type* <default-font> default-font
make-default-font
default-font?
(serif default-font-serif (default ""))
(sans-serif defalut-font-sans-serif (default ""))
(monospace default-font-monospace (default "")))
(define (sxml->xmlstring sxml)
(if (null? sxml)
""
(call-with-output-string
(lambda (port)
(sxml->xml sxml port)
(newline port)))))
(define font-directories? list?)
(define (serialize-font-directories field-name value)
(sxml->xmlstring
(append
'((dir "~/.guix-home/profile/share/fonts"))
(map
(lambda (path)
`(dir ,path))
value))))
(define extra-config-list? list?)
(define (serialize-extra-config-list field-name value)
(sxml->xmlstring
(map (match-lambda
((? pair? sxml) sxml)
((? string? xml) (xml->sxml xml))
(_ (error "extra-config value must be xml string or sxml list.")))
value)))
(define (serialize-default-font field-name value)
(match value
(($ <default-font> serif sans-serif monospace)
(sxml->xmlstring
(fold (lambda (pair sxml)
(if (string-null? (cdr pair))
sxml
(append sxml
`((alias
(family ,(car pair))
(prefer
(family ,(cdr pair))))))))
'()
`((serif . ,serif)
(sans-serif . ,sans-serif)
(monospace . ,monospace)))))))
(define-configuration home-fontconfig-configuration
(font-directories
(font-directories '())
"The directory list that provides fonts.")
(preferred-default-font
(default-font (default-font))
"The preffered default fonts for serif, sans-serif, and monospace.")
(extra-config
(extra-config-list '())
"Extra configuration values to append to the fonts.conf."))
(define (home-fontconfig-extend original-config extend-configs)
(home-fontconfig-configuration
(inherit original-config)
(font-directories
(append
(home-fontconfig-configuration-font-directories original-config)
(append-map home-fontconfig-configuration-font-directories extend-configs)))
(preferred-default-font
(home-fontconfig-configuration-preferred-default-font
(if (null? extend-configs)
original-config
(last extend-configs))))
(extra-config
(append
(home-fontconfig-configuration-extra-config original-config)
(append-map home-fontconfig-configuration-extra-config extend-configs)))))
(define (add-fontconfig-config-file user-config)
`(("fontconfig/fonts.conf"
,(mixed-text-file
"fonts.conf"
"<?xml version='1.0'?>
<!DOCTYPE fontconfig SYSTEM 'fonts.dtd'>
<fontconfig>\n"
(serialize-configuration user-config home-fontconfig-configuration-fields)
"</fontconfig>\n"))))
(define (regenerate-font-cache-gexp _)
`(("profile/share/fonts"
,#~(system* #$(file-append fontconfig "/bin/fc-cache") "-fv"))))
(define home-fontconfig-service-type
(service-type (name 'home-fontconfig)
(compose identity)
(extend home-fontconfig-extend)
(extensions
(list (service-extension
home-xdg-configuration-files-service-type
add-fontconfig-config-file)
(service-extension
home-run-on-change-service-type
regenerate-font-cache-gexp)
(service-extension
home-profile-service-type
(const (list fontconfig)))))
(default-value (home-fontconfig-configuration))
(description
"Provides configuration file for fontconfig and make
fc-* utilities aware of font packages installed in Guix Home's profile.")))
|