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font: web canvas can render emoji

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This commit is contained in:
Mitchell Hashimoto
2022-12-06 10:55:42 -08:00
parent 41cbc1a323
commit 6aa212707e
3 changed files with 81 additions and 29 deletions
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15
example/app.ts
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@@ -63,17 +63,18 @@ fetch(url.href).then(response =>
new Uint8Array(memory.buffer, font_ptr).set(font);
// Initialize our deferred face
const df = deferred_face_new(font_ptr, font.byteLength);
// const df = deferred_face_new(font_ptr, font.byteLength, 0 /* text */);
//deferred_face_load(df, 72 /* size */);
//const face = deferred_face_face(df);
// Initialize our font face
//const face = face_new(font_ptr, font.byteLength, 72 /* size in px */);
free(font_ptr);
//free(font_ptr);
// Create our group
const group = group_new(72 /* size */);
group_add_face(group, 0, df);
group_add_face(group, 0 /* regular */, deferred_face_new(font_ptr, font.byteLength, 0 /* text */));
group_add_face(group, 0 /* regular */, deferred_face_new(font_ptr, font.byteLength, 1 /* emoji */));
// Create our group cache
const group_cache = group_cache_new(group);
@@ -84,6 +85,14 @@ fetch(url.href).then(response =>
group_cache_render_glyph(group_cache, font_idx, i, 0);
//face_render_glyph(face, atlas, i);
}
const emoji = ["🐏","🌞","🌚","🍱","💿","🐈","📃","📀","🕡","🙃"];
for (let i = 0; i < emoji.length; i++) {
const cp = emoji[i].codePointAt(0);
const font_idx = group_cache_index_for_codepoint(group_cache, cp, 0, 1 /* emoji */);
group_cache_render_glyph(group_cache, font_idx, cp, 0);
}
//face_render_glyph(face, atlas, "橋".codePointAt(0));
//face_render_glyph(face, atlas, "p".codePointAt(0));