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[fontations] rustfmt

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This commit is contained in:
Behdad Esfahbod 2025-03-04 16:38:17 -07:00 • committed by Khaled Hosny
parent 156b77327e
commit 83e85d2ac1
1 changed files with 70 additions and 42 deletions
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112
src/fontations/lib.rs
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@ -2,30 +2,30 @@
#![allow(non_upper_case_globals)]
include!(concat!(env!("OUT_DIR"), "/hb.rs"));
use std::os::raw::{c_void};
use std::ptr::{null_mut};
use std::os::raw::c_void;
use std::ptr::null_mut;
use std::sync::atomic::{AtomicPtr, Ordering};
use skrifa::{charmap, GlyphId, MetadataProvider};
use skrifa::font::FontRef;
use skrifa::instance::{Location, NormalizedCoord, Size};
use skrifa::{charmap, GlyphId, MetadataProvider};
// A struct for storing your “fontations” data
#[repr(C)]
struct FontationsData
{
struct FontationsData {
face_blob: *mut hb_blob_t,
font_ref: FontRef<'static>,
char_map : charmap::Charmap<'static>,
char_map: charmap::Charmap<'static>,
size: Size,
location: Location,
}
extern "C" fn _hb_fontations_data_destroy(font_data: *mut c_void)
{
extern "C" fn _hb_fontations_data_destroy(font_data: *mut c_void) {
let data = unsafe { Box::from_raw(font_data as *mut FontationsData) };
unsafe { hb_blob_destroy(data.face_blob); }
unsafe {
hb_blob_destroy(data.face_blob);
}
}
extern "C" fn _hb_fontations_get_nominal_glyphs(
@ -37,18 +37,24 @@ extern "C" fn _hb_fontations_get_nominal_glyphs(
first_glyph: *mut hb_codepoint_t,
glyph_stride: ::std::os::raw::c_uint,
_user_data: *mut ::std::os::raw::c_void,
) -> ::std::os::raw::c_uint
{
) -> ::std::os::raw::c_uint {
let data = unsafe { &*(font_data as *const FontationsData) };
let char_map = &data.char_map;
for i in 0..count {
let unicode = unsafe { *(first_unicode as *const u8).offset((i * unicode_stride) as isize) as *const hb_codepoint_t };
let unicode = unsafe {
*(first_unicode as *const u8).offset((i * unicode_stride) as isize)
as *const hb_codepoint_t
};
let glyph = char_map.map(unicode as u32);
if glyph.is_none()
{ return i; }
if glyph.is_none() {
return i;
}
let glyph_id = u32::from(glyph.unwrap()) as hb_codepoint_t;
unsafe { *((first_glyph as *mut u8).offset((i * glyph_stride) as isize) as *mut hb_codepoint_t) = glyph_id; }
unsafe {
*((first_glyph as *mut u8).offset((i * glyph_stride) as isize)
as *mut hb_codepoint_t) = glyph_id;
}
}
count
@ -62,8 +68,7 @@ extern "C" fn _hb_fontations_get_glyph_h_advances(
first_advance: *mut hb_position_t,
advance_stride: ::std::os::raw::c_uint,
_user_data: *mut ::std::os::raw::c_void,
)
{
) {
let data = unsafe { &*(font_data as *const FontationsData) };
let font_ref = &data.font_ref;
let size = &data.size;
@ -71,19 +76,25 @@ extern "C" fn _hb_fontations_get_glyph_h_advances(
let glyph_metrics = font_ref.glyph_metrics(*size, location);
for i in 0..count {
let glyph = unsafe { *(first_glyph as *const u8).offset((i * glyph_stride) as isize) as *const hb_codepoint_t };
let glyph = unsafe {
*(first_glyph as *const u8).offset((i * glyph_stride) as isize) as *const hb_codepoint_t
};
let glyph_id = GlyphId::new(glyph as u32);
let advance = glyph_metrics.advance_width(glyph_id).unwrap_or_default().round() as i32;
unsafe { *((first_advance as *mut u8).offset((i * advance_stride) as isize) as *mut hb_position_t) = advance as hb_position_t; }
let advance = glyph_metrics
.advance_width(glyph_id)
.unwrap_or_default()
.round() as i32;
unsafe {
*((first_advance as *mut u8).offset((i * advance_stride) as isize)
as *mut hb_position_t) = advance as hb_position_t;
}
}
}
fn _hb_fontations_font_funcs_create() -> *mut hb_font_funcs_t
{
fn _hb_fontations_font_funcs_create() -> *mut hb_font_funcs_t {
static static_ffuncs: AtomicPtr<hb_font_funcs_t> = AtomicPtr::new(null_mut());
loop
{
loop {
let mut ffuncs = static_ffuncs.load(Ordering::Acquire);
if !ffuncs.is_null() {
@ -93,46 +104,61 @@ fn _hb_fontations_font_funcs_create() -> *mut hb_font_funcs_t
ffuncs = unsafe { hb_font_funcs_create() };
unsafe {
hb_font_funcs_set_nominal_glyphs_func(ffuncs, Some(_hb_fontations_get_nominal_glyphs), null_mut(), None);
hb_font_funcs_set_glyph_h_advances_func(ffuncs, Some(_hb_fontations_get_glyph_h_advances), null_mut(), None);
hb_font_funcs_set_nominal_glyphs_func(
ffuncs,
Some(_hb_fontations_get_nominal_glyphs),
null_mut(),
None,
);
hb_font_funcs_set_glyph_h_advances_func(
ffuncs,
Some(_hb_fontations_get_glyph_h_advances),
null_mut(),
None,
);
}
if (static_ffuncs.compare_exchange(null_mut(), ffuncs, Ordering::SeqCst, Ordering::Relaxed)) == Ok(null_mut()) {
if (static_ffuncs.compare_exchange(null_mut(), ffuncs, Ordering::SeqCst, Ordering::Relaxed))
== Ok(null_mut())
{
return ffuncs;
} else {
unsafe { hb_font_funcs_destroy(ffuncs); }
unsafe {
hb_font_funcs_destroy(ffuncs);
}
}
}
}
// A helper to attach these funcs to a hb_font_t
#[no_mangle]
pub extern "C" fn hb_fontations_font_set_funcs(
font: *mut hb_font_t,
)
{
let ffuncs = _hb_fontations_font_funcs_create ();
pub extern "C" fn hb_fontations_font_set_funcs(font: *mut hb_font_t) {
let ffuncs = _hb_fontations_font_funcs_create();
let face_index = unsafe { hb_face_get_index(hb_font_get_face(font)) };
let face_blob = unsafe { hb_face_reference_blob(hb_font_get_face(font)) };
let blob_length = unsafe { hb_blob_get_length(face_blob) };
let blob_data = unsafe { hb_blob_get_data(face_blob, null_mut()) };
let face_data = unsafe { std::slice::from_raw_parts(blob_data as *const u8, blob_length as usize) };
let face_data =
unsafe { std::slice::from_raw_parts(blob_data as *const u8, blob_length as usize) };
let font_ref = FontRef::from_index(face_data, face_index).unwrap();
let char_map = charmap::Charmap::new(&font_ref);
let mut num_coords : u32 = 0;
let mut num_coords: u32 = 0;
let coords = unsafe { hb_font_get_var_coords_normalized(font, &mut num_coords) };
let mut location = Location::new(num_coords as usize);
let coords_mut = location.coords_mut();
for i in 0..num_coords as usize
{ coords_mut[i] = NormalizedCoord::from_bits( unsafe { *coords.offset(i as isize) } as i16); }
for i in 0..num_coords as usize {
coords_mut[i] = NormalizedCoord::from_bits(unsafe { *coords.offset(i as isize) } as i16);
}
let mut x_scale : i32 = 0;
let mut y_scale : i32 = 0;
unsafe { hb_font_get_scale(font, &mut x_scale, &mut y_scale); };
let mut x_scale: i32 = 0;
let mut y_scale: i32 = 0;
unsafe {
hb_font_get_scale(font, &mut x_scale, &mut y_scale);
};
let size = Size::new(x_scale as f32);
let data = Box::new(FontationsData {
@ -145,8 +171,10 @@ pub extern "C" fn hb_fontations_font_set_funcs(
let data_ptr = Box::into_raw(data) as *mut c_void;
unsafe {
hb_font_set_funcs (font, ffuncs, data_ptr, Some(_hb_fontations_data_destroy));
hb_font_set_funcs(font, ffuncs, data_ptr, Some(_hb_fontations_data_destroy));
}
unsafe { hb_font_funcs_destroy (ffuncs); }
unsafe {
hb_font_funcs_destroy(ffuncs);
}
}