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76 lines
2.5 KiB
Racket
76 lines
2.5 KiB
Racket
#lang racket/base
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(require ffi/unsafe
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ffi/unsafe/define
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ffi/unsafe/alloc
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setup/dirs
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racket/draw/private/libs
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racket/draw/private/utils)
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(define-runtime-lib fontconfig-lib
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[(unix) (ffi-lib "libfontconfig" '("1" ""))]
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[(macosx)
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(ffi-lib "libpng16.16.dylib")
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(ffi-lib "libexpat.1.dylib")
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(ffi-lib "libfreetype.6.dylib")
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(ffi-lib "libfontconfig.1.dylib")]
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[(windows)
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(ffi-lib "zlib1.dll")
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(ffi-lib "libintl-8.dll")
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(ffi-lib "libpng16-16.dll")
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(ffi-lib "libexpat-1.dll")
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(ffi-lib "libfreetype-6.dll")
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(ffi-lib "libfontconfig-1.dll")])
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(define-syntax-rule (_pfun spec ...)
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(_fun #:in-original-place? #t spec ...))
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(define-ffi-definer define-fc fontconfig-lib
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#:provide provide)
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;; datatype information from
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;; http://www.freedesktop.org/software/fontconfig/fontconfig-devel/x31.html
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(define FcConfig (_cpointer 'FcConfig))
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(define FcPattern (_cpointer 'FcPattern))
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(define FcPattern-pointer (_cpointer FcPattern))
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(define FcObjectSet (_cpointer 'FcObjectSet))
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(define FcBool _bool)
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(define FcChar8 _bytes)
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(define-cstruct _FcFontSet
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([nfont _int]
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[sfont _int]
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[fonts FcPattern-pointer])) ;; ?? spec says "FcPattern **fonts" but I don't know how this translates to ffi
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;; function information from
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;; http://www.freedesktop.org/software/fontconfig/fontconfig-devel/x102.html
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(define-fc FcGetVersion (_pfun -> _int))
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(define-fc FcConfigCreate (_pfun -> FcConfig))
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(define-fc FcInitLoadConfig (_pfun -> FcConfig))
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(define-fc FcConfigAppFontAddFile (_pfun FcConfig FcChar8 -> FcBool))
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(define-fc FcConfigHome (_pfun -> FcChar8))
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(define-fc FcConfigGetSysRoot(_pfun FcConfig -> FcChar8))
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(define-fc FcFontList(_pfun FcConfig FcPattern FcObjectSet -> _FcFontSet))
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(define-fc FcPatternCreate (_pfun -> FcPattern))
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(define-fc FcFontSetCreate (_pfun -> _FcFontSet))
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(define-fc FcObjectSetCreate (_pfun -> FcObjectSet))
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(define-fc FcPatternPrint (_pfun FcPattern -> _void))
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(define-fc FcPatternEqual (_pfun FcPattern FcPattern -> FcBool))
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;; attempting to replicate font-loading workaround shown at
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;; https://bugzilla.gnome.org/show_bug.cgi?id=347237#c25
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(define cfg (FcConfigCreate)) ; workaround step 1
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(define path (string->bytes/utf-8 "/Users/MB/Desktop/reporter.otf"))
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(FcConfigAppFontAddFile cfg path) ; workaround step 2
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(define fcp (FcPatternCreate))
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(define fcos (FcObjectSetCreate))
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(define fs (FcFontList cfg fcp fcos))
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(define pat (FcFontSet-fonts fs))
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;; this crashes DrRacket, prob because I have mangled the _FcFontSet definition
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;; (FcPatternPrint pat)
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