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servo: Merge #6202 - Freetype fixes (from nnethercote:freetype-fixes); r=jack

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Because #6198 wasn't quite right.

Source-Repo: https://github.com/servo/servo
Source-Revision: dddd222d2967bcf29dbb29856ddd7265c83e4d08
This commit is contained in:
Nicholas Nethercote 2015-05-28 09:04:08 -05:00
parent 248f6a2dbb
commit e5ec07f5a0
2 changed files with 22 additions and 22 deletions
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43
servo/components/gfx/platform/freetype/font_context.rs
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@ -13,9 +13,7 @@ use freetype::freetype::struct_FT_MemoryRec_;
use std::ptr;
use std::rc::Rc;
use libc;
use libc::{c_void, c_long, size_t, malloc};
use std::mem;
use libc::{self, c_void, c_long, size_t};
extern fn ft_alloc(_mem: FT_Memory, size: c_long) -> *mut c_void {
unsafe {
@ -40,6 +38,17 @@ extern fn ft_realloc(_mem: FT_Memory, _cur_size: c_long, new_size: c_long, block
#[derive(Clone)]
pub struct FreeTypeLibraryHandle {
pub ctx: FT_Library,
pub mem: FT_Memory,
}
impl Drop for FreeTypeLibraryHandle {
fn drop(&mut self) {
assert!(!self.ctx.is_null());
unsafe {
FT_Done_Library(self.ctx);
Box::from_raw(self.mem);
}
}
}
#[derive(Clone)]
@ -47,35 +56,25 @@ pub struct FontContextHandle {
pub ctx: Rc<FreeTypeLibraryHandle>,
}
impl Drop for FreeTypeLibraryHandle {
fn drop(&mut self) {
assert!(!self.ctx.is_null());
unsafe { FT_Done_Library(self.ctx) };
}
}
impl FontContextHandle {
pub fn new() -> FontContextHandle {
let mem = box struct_FT_MemoryRec_ {
user: ptr::null_mut(),
alloc: ft_alloc,
free: ft_free,
realloc: ft_realloc,
};
unsafe {
let ptr = libc::malloc(mem::size_of::<struct_FT_MemoryRec_>() as size_t);
let allocator: &mut struct_FT_MemoryRec_ = mem::transmute(ptr);
ptr::write(allocator, struct_FT_MemoryRec_ {
user: ptr::null_mut(),
alloc: ft_alloc,
free: ft_free,
realloc: ft_realloc,
});
let mut ctx: FT_Library = ptr::null_mut();
let result = FT_New_Library(ptr as FT_Memory, &mut ctx);
let mem = ::std::boxed::into_raw(mem);
let result = FT_New_Library(mem, &mut ctx);
if !result.succeeded() { panic!("Unable to initialize FreeType library"); }
FT_Add_Default_Modules(ctx);
FontContextHandle {
ctx: Rc::new(FreeTypeLibraryHandle { ctx: ctx }),
ctx: Rc::new(FreeTypeLibraryHandle { ctx: ctx, mem: mem }),
}
}
}

1
servo/components/servo/Cargo.lock generated
View File

@ -479,6 +479,7 @@ dependencies = [
"layers 0.1.0 (git+https://github.com/servo/rust-layers)",
"libc 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
"msg 0.0.1",
"net 0.0.1",
"script_traits 0.0.1",
"time 0.1.25 (registry+https://github.com/rust-lang/crates.io-index)",
"url 0.2.33 (registry+https://github.com/rust-lang/crates.io-index)",