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synced 2024-11-18 13:55:23 -05:00
Add function for listing font names on linux
This function isn't exactly useful, but it's working ffi with the fontconfig library. Woo! Next step will be returning some objects with more information (like font path so we can start rendering glyphs!).
This commit is contained in:
Joe Wilm
parent
621776cd94
commit
2a7dc1deb8
5 changed files with 144 additions and 0 deletions
10
.travis.yml
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10
.travis.yml
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language: rust
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sudo: false
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rust:
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# There's currently a cargo bug on stable which prevents libfontconfig_sys
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# from building properly.
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- nightly
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script:
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- cargo test
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68
Cargo.lock
generated
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68
Cargo.lock
generated
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@ -0,0 +1,68 @@
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[root]
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name = "alacritty"
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version = "0.1.0"
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dependencies = [
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"freetype 0.1.0 (git+https://github.com/servo/rust-freetype.git)",
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"libc 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
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"servo-fontconfig 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "expat-sys"
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version = "2.1.2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"make-cmd 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
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"pkg-config 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "freetype"
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version = "0.1.0"
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source = "git+https://github.com/servo/rust-freetype.git#d564ff90a3c69d987f5c015d7ec034cfaee21aff"
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dependencies = [
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"libc 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "libc"
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version = "0.2.7"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "make-cmd"
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version = "0.1.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "pkg-config"
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version = "0.3.7"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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[[package]]
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name = "servo-fontconfig"
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version = "0.2.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"libc 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
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"servo-fontconfig-sys 2.11.3 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "servo-fontconfig-sys"
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version = "2.11.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"expat-sys 2.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
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"pkg-config 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
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"servo-freetype-sys 2.4.11 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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[[package]]
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name = "servo-freetype-sys"
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version = "2.4.11"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"pkg-config 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
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]
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@ -4,3 +4,6 @@ version = "0.1.0"
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authors = ["Joe Wilm <joe@jwilm.com>"]
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[dependencies]
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servo-fontconfig = "0.2"
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freetype = { git = "https://github.com/servo/rust-freetype.git" }
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libc = "*"
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57
src/list_fonts.rs
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57
src/list_fonts.rs
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use std::ffi::CStr;
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use std::ptr;
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use std::str;
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use libc::{c_char, c_int};
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use fontconfig::fontconfig::{FcConfigGetCurrent, FcConfigGetFonts, FcSetSystem};
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use fontconfig::fontconfig::{FcPatternGetString};
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use fontconfig::fontconfig::{FcResultMatch};
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use fontconfig::fontconfig::{FcChar8};
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pub fn list_font_names() -> Vec<String> {
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let mut fonts = Vec::new();
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unsafe {
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// https://www.freedesktop.org/software/fontconfig/fontconfig-devel/fcconfiggetcurrent.html
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let config = FcConfigGetCurrent(); // *mut FcConfig
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// https://www.freedesktop.org/software/fontconfig/fontconfig-devel/fcconfiggetfonts.html
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let font_set = FcConfigGetFonts(config, FcSetSystem); // *mut FcFontSet
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let nfont = (*font_set).nfont as isize;
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for i in 0..nfont {
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let font = (*font_set).fonts.offset(i); // *mut FcPattern
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let id = 0 as c_int;
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let mut fullname: *mut FcChar8 = ptr::null_mut();
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// The second parameter here (fullname) is from the "FONT PROPERTIES" table:
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// https://www.freedesktop.org/software/fontconfig/fontconfig-devel/x19.html
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let result = FcPatternGetString(*font,
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b"fullname\0".as_ptr() as *mut c_char,
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id,
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&mut fullname);
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if result != FcResultMatch {
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continue;
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}
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let s = str::from_utf8(CStr::from_ptr(fullname as *const c_char).to_bytes())
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.unwrap().to_owned();
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fonts.push(s);
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}
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}
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fonts
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}
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#[cfg(test)]
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mod tests {
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use super::list_font_names;
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#[test]
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fn list_fonts() {
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let fonts = list_font_names();
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assert!(!fonts.is_empty());
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println!("fonts: {:?}", fonts);
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}
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}
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@ -1,3 +1,9 @@
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extern crate fontconfig;
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extern crate freetype;
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extern crate libc;
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mod list_fonts;
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fn main() {
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println!("Hello, world!");
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}
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