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More work on text shaping

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This commit is contained in:
Brian Anderson 2012-06-08 18:14:04 -07:00
parent e3d9650196
commit a0b200d35a
1 changed files with 25 additions and 3 deletions
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28
src/servo/text/shaper.rs
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@ -1,5 +1,5 @@
import libc::types::common::c99::int32_t; import libc::types::common::c99::int32_t;
import libc::{c_uint, c_int}; import libc::{c_uint, c_int, c_void};
import font::font; import font::font;
import glyph::{glyph, glyph_pos}; import glyph::{glyph, glyph_pos};
import ptr::{null, addr_of, offset}; import ptr::{null, addr_of, offset};
@ -7,7 +7,8 @@ import ptr::{null, addr_of, offset};
import unsafe::reinterpret_cast; import unsafe::reinterpret_cast;
import harfbuzz::{HB_MEMORY_MODE_READONLY, import harfbuzz::{HB_MEMORY_MODE_READONLY,
HB_DIRECTION_LTR}; HB_DIRECTION_LTR};
import harfbuzz::{hb_blob_t, hb_face_t, hb_font_t, hb_buffer_t}; import harfbuzz::{hb_blob_t, hb_face_t, hb_font_t, hb_buffer_t,
hb_codepoint_t, hb_bool_t};
import harfbuzz::bindgen::{hb_blob_create, hb_blob_destroy, import harfbuzz::bindgen::{hb_blob_create, hb_blob_destroy,
hb_face_create, hb_face_destroy, hb_face_create, hb_face_destroy,
hb_font_create, hb_font_destroy, hb_font_create, hb_font_destroy,
@ -16,7 +17,12 @@ import harfbuzz::bindgen::{hb_blob_create, hb_blob_destroy,
hb_buffer_get_glyph_infos, hb_buffer_get_glyph_infos,
hb_buffer_get_glyph_positions, hb_buffer_get_glyph_positions,
hb_font_set_ppem, hb_font_set_scale, hb_font_set_ppem, hb_font_set_scale,
hb_buffer_set_direction}; hb_buffer_set_direction,
hb_font_funcs_create, hb_font_funcs_destroy,
hb_font_set_funcs,
hb_font_funcs_set_glyph_h_advance_func,
hb_font_funcs_set_glyph_func,
hb_font_funcs_set_glyph_h_kerning_func};
#[doc = " #[doc = "
Calculate the layout metrics associated with a some given text Calculate the layout metrics associated with a some given text
@ -60,6 +66,10 @@ fn shape_text2(font: &font, text: str) -> [glyph] unsafe {
hb_font_set_ppem(font, 10 as c_uint, 10 as c_uint); hb_font_set_ppem(font, 10 as c_uint, 10 as c_uint);
hb_font_set_scale(font, 10 as c_int, 10 as c_int); hb_font_set_scale(font, 10 as c_int, 10 as c_int);
let funcs = hb_font_funcs_create();
hb_font_funcs_set_glyph_func(funcs, glyph_func, null(), null());
hb_font_set_funcs(font, funcs, addr_of(*font), null());
let buffer = hb_buffer_create(); let buffer = hb_buffer_create();
hb_buffer_set_direction(buffer, HB_DIRECTION_LTR); hb_buffer_set_direction(buffer, HB_DIRECTION_LTR);
@ -93,6 +103,7 @@ fn shape_text2(font: &font, text: str) -> [glyph] unsafe {
} }
hb_buffer_destroy(buffer); hb_buffer_destroy(buffer);
hb_font_funcs_destroy(funcs);
hb_font_destroy(font); hb_font_destroy(font);
hb_face_destroy(face); hb_face_destroy(face);
hb_blob_destroy(face_blob); hb_blob_destroy(face_blob);
@ -100,6 +111,17 @@ fn shape_text2(font: &font, text: str) -> [glyph] unsafe {
ret []; ret [];
} }
crust fn glyph_func(_font: *hb_font_t,
_font_data: *c_void,
_unicode: hb_codepoint_t,
_variant_selector: hb_codepoint_t,
glyph: *mut hb_codepoint_t,
_user_data: *c_void) -> hb_bool_t unsafe {
*glyph = 40 as hb_codepoint_t;
ret true as hb_bool_t;
}
#[test] #[test]
fn test_shape_basic() { fn test_shape_basic() {
let font = font::create(); let font = font::create();