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Write a macro or syntax extension to generate OpenType tags

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Fixes #4556
This commit is contained in:
Gilles Leblanc 2015-01-07 21:07:23 -05:00
parent 31627bdc9d
commit 9fe39951b0
2 changed files with 8 additions and 18 deletions
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12
components/gfx/text/shaping/harfbuzz.rs
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@ -47,13 +47,17 @@ use std::mem;
use std::cmp;
use std::ptr;
macro_rules! hb_tag {
($t1:expr, $t2:expr, $t3:expr, $t4:expr) => (
(($t1 as u32) << 24) | (($t2 as u32) << 16) | (($t3 as u32) << 8) | ($t4 as u32)
);
}
static NO_GLYPH: i32 = -1;
static CONTINUATION_BYTE: i32 = -2;
static KERN: u32 = ((b'k' as u32) << 24) | ((b'e' as u32) << 16) | ((b'r' as u32) << 8) |
(b'n' as u32);
static LIGA: u32 = ((b'l' as u32) << 24) | ((b'i' as u32) << 16) | ((b'g' as u32) << 8) |
(b'a' as u32);
static KERN: u32 = hb_tag!('k', 'e', 'r', 'n');
static LIGA: u32 = hb_tag!('l', 'i', 'g', 'a');
pub struct ShapedGlyphData {
count: int,