mirror of
https://github.com/slint-ui/slint.git
synced 2025-10-03 07:04:34 +00:00
d2923d51f6
Use the static (but long) fallback list that we get from fontconfig in the beginning. This works, but can be optimized to operate on a trimmed and shorter list, which will speed up the fallback. But for now this makes it work.
55 lines
2.1 KiB
Rust
55 lines
2.1 KiB
Rust
/* LICENSE BEGIN
|
|
This file is part of the SixtyFPS Project -- https://sixtyfps.io
|
|
Copyright (c) 2021 Olivier Goffart <olivier.goffart@sixtyfps.io>
|
|
Copyright (c) 2021 Simon Hausmann <simon.hausmann@sixtyfps.io>
|
|
|
|
SPDX-License-Identifier: GPL-3.0-only
|
|
This file is also available under commercial licensing terms.
|
|
Please contact info@sixtyfps.io for more information.
|
|
LICENSE END */
|
|
|
|
use fontconfig::fontconfig;
|
|
|
|
pub fn find_families(requested_family: &str) -> Vec<String> {
|
|
unsafe {
|
|
let config = fontconfig::FcInitLoadConfigAndFonts();
|
|
let family_cstr = std::ffi::CString::new(requested_family).unwrap();
|
|
let pattern = fontconfig::FcNameParse(family_cstr.as_ptr() as *mut libc::c_uchar);
|
|
fontconfig::FcConfigSubstitute(std::ptr::null_mut(), pattern, fontconfig::FcMatchPattern);
|
|
fontconfig::FcDefaultSubstitute(pattern);
|
|
let mut sort_result = fontconfig::FcResultMatch;
|
|
let result_set =
|
|
fontconfig::FcFontSort(config, pattern, 1, std::ptr::null_mut(), &mut sort_result);
|
|
|
|
let mut families = Vec::new();
|
|
for idx in 0..(*result_set).nfont {
|
|
let mut raw_family_name = std::ptr::null_mut();
|
|
if fontconfig::FcPatternGetString(
|
|
*(*result_set).fonts.offset(idx as isize),
|
|
b"family\0".as_ptr() as *const libc::c_char,
|
|
0,
|
|
&mut raw_family_name,
|
|
) != fontconfig::FcResultMatch
|
|
{
|
|
continue;
|
|
}
|
|
|
|
if raw_family_name.is_null() {
|
|
continue;
|
|
}
|
|
if let Some(family_name) =
|
|
std::ffi::CStr::from_ptr(raw_family_name as *const libc::c_char)
|
|
.to_str()
|
|
.ok()
|
|
.map(|raw_family_name| raw_family_name.to_owned())
|
|
{
|
|
families.push(family_name)
|
|
}
|
|
}
|
|
|
|
fontconfig::FcFontSetDestroy(result_set);
|
|
fontconfig::FcPatternDestroy(pattern);
|
|
fontconfig::FcConfigDestroy(config);
|
|
families
|
|
}
|
|
}
|