From 0dd12fd2c4d96a56fe6ba2df6c1aa264b77c9185 Mon Sep 17 00:00:00 2001 From: Declan Tsien Date: Thu, 31 Aug 2023 11:59:35 +0800 Subject: [PATCH 1/2] Add fontconfig support for font dirs and generic names --- Cargo.toml | 3 ++ src/layout/font/builder.rs | 89 +++++++++++++++++++++++++++++++++++++- 2 files changed, 90 insertions(+), 2 deletions(-) diff --git a/Cargo.toml b/Cargo.toml index 10aaba4..c799e09 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -13,5 +13,8 @@ memmap2 = "0.2.1" glutin = "0.26.0" clipboard2 = "0.1.1" +[target.'cfg(all(unix, not(any(target_os = "macos", target_os = "android"))))'.dependencies] +fontconfig-parser = "0.5" + [build-dependencies] gl_generator = "0.14" diff --git a/src/layout/font/builder.rs b/src/layout/font/builder.rs index c5f6c85..784e48f 100644 --- a/src/layout/font/builder.rs +++ b/src/layout/font/builder.rs @@ -3,14 +3,14 @@ use super::index_data::*; use super::library::FontLibrary; use super::system::{Os, OS}; use super::types::*; -use crate::util::{string::SmallString}; +use crate::util::string::SmallString; use std::{ fs, path::{Path, PathBuf}, sync::RwLock, time::SystemTime, }; -use swash::{CacheKey, Attributes, FontDataRef, FontRef, Stretch, StringId, Style, Weight}; +use swash::{Attributes, CacheKey, FontDataRef, FontRef, Stretch, StringId, Style, Weight}; /// Hint for specifying whether font files should be memory mapped. #[derive(Copy, Clone, PartialEq, Eq, Debug)] @@ -137,6 +137,22 @@ impl FontLibraryBuilder { /// Builds a library for the current configuration. pub fn build(&mut self) -> FontLibrary { + #[cfg(all(unix, not(any(target_os = "macos", target_os = "android"))))] + let fontconfig = load_fontconfig(); + #[cfg(all(unix, not(any(target_os = "macos", target_os = "android"))))] + { + let home = std::env::var("HOME"); + fontconfig.dirs.iter().for_each(|dir| { + if dir.path.starts_with("~") { + if let Ok(ref home) = home { + let path = Path::new(home).join(dir.path.strip_prefix("~").unwrap()); + self.add_dir(path); + } + } else { + self.add_dir(dir.clone().path); + }; + }); + } let mut index = StaticIndex::default(); core::mem::swap(&mut index, &mut self.inner.index); for family in index.families.iter_mut() { @@ -150,6 +166,42 @@ impl FontLibraryBuilder { if self.fallbacks { index.setup_default_fallbacks(); } + + #[cfg(all(unix, not(any(target_os = "macos", target_os = "android"))))] + { + use fontconfig_parser::Alias; + + if self.generics { + fontconfig.aliases.iter().for_each( + |Alias { + alias, + default, + prefer, + accept, + }| { + let names = [&prefer[..], &accept[..], &default[..]].concat(); + let find_family = |families: Vec| { + for family in families { + if let Some(id) = index + .base + .family_map + .get(family.trim().to_lowercase().as_str()) + { + return Some(*id); + } + } + None + }; + if let Some(generic_family) = GenericFamily::parse(alias) { + if let Some(id) = find_family(names.clone()) { + index.generic[generic_family as usize] = Some(id); + }; + } + }, + ) + } + } + FontLibrary::new(index) } } @@ -474,3 +526,36 @@ impl Scanner { Some(()) } } + +#[cfg(all(unix, not(any(target_os = "macos", target_os = "android"))))] +fn load_fontconfig() -> fontconfig_parser::FontConfig { + let mut fontconfig = fontconfig_parser::FontConfig::default(); + let home = std::env::var("HOME"); + + if let Ok(ref config_file) = std::env::var("FONTCONFIG_FILE") { + let _ = fontconfig.merge_config(Path::new(config_file)); + } else { + let xdg_config_home = if let Ok(val) = std::env::var("XDG_CONFIG_HOME") { + Some(val.into()) + } else if let Ok(ref home) = home { + // according to https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html + // $XDG_CONFIG_HOME should default to $HOME/.config if not set + Some(Path::new(home).join(".config")) + } else { + None + }; + + let read_global = match xdg_config_home { + Some(p) => fontconfig + .merge_config(&p.join("fontconfig/fonts.conf")) + .is_err(), + None => true, + }; + + if read_global { + let _ = fontconfig.merge_config(Path::new("/etc/fonts/local.conf")); + } + let _ = fontconfig.merge_config(Path::new("/etc/fonts/fonts.conf")); + } + fontconfig +} From d32eb19e0eaf5bc09ec7d84c01053c4f7dc9a811 Mon Sep 17 00:00:00 2001 From: Declan Tsien Date: Thu, 31 Aug 2023 14:21:12 +0800 Subject: [PATCH 2/2] Auto detect generic when creating FamilyKey from str --- src/layout/font/types.rs | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/src/layout/font/types.rs b/src/layout/font/types.rs index bb08f54..67dd033 100644 --- a/src/layout/font/types.rs +++ b/src/layout/font/types.rs @@ -74,7 +74,11 @@ pub enum FamilyKey<'a> { impl<'a> From<&'a str> for FamilyKey<'a> { fn from(name: &'a str) -> Self { - Self::Name(name) + if let Some(generic_family) = GenericFamily::parse(name) { + Self::Generic(generic_family) + } else { + Self::Name(name) + } } }