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import { ZigJS } from 'zig-js';
const zjs = new ZigJS();
const importObject = {
module: {},
env: {
log: (ptr: number, len: number) => {
const view = new DataView(zjs.memory.buffer, ptr, Number(len));
const str = new TextDecoder('utf-8').decode(view);
console.log(str);
},
},
...zjs.importObject(),
};
const url = new URL('ghostty-wasm.wasm', import.meta.url);
fetch(url.href).then(response =>
response.arrayBuffer()
).then(bytes =>
WebAssembly.instantiate(bytes, importObject)
).then(results => {
const {
memory,
malloc,
free,
face_new,
face_free,
face_render_glyph,
face_debug_canvas,
deferred_face_new,
deferred_face_free,
deferred_face_load,
deferred_face_face,
group_new,
group_free,
group_add_face,
group_index_for_codepoint,
group_render_glyph,
group_cache_new,
group_cache_free,
group_cache_index_for_codepoint,
group_cache_render_glyph,
group_cache_atlas_greyscale,
group_cache_atlas_color,
atlas_new,
atlas_free,
atlas_debug_canvas,
shaper_new,
shaper_free,
shaper_test,
} = results.instance.exports;
// Give us access to the zjs value for debugging.
globalThis.zjs = zjs;
console.log(zjs);
// Initialize our zig-js memory
zjs.memory = memory;
// Helpers
const makeStr = (str) => {
const utf8 = new TextEncoder().encode(str);
const ptr = malloc(utf8.byteLength);
new Uint8Array(memory.buffer, ptr).set(utf8);
return { ptr: ptr, len: utf8.byteLength };
};
// Create our atlas
// const atlas = atlas_new(512, 0 /* greyscale */);
// Create some memory for our string
const font_name = makeStr("monospace");
// Initialize our deferred face
// 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);
// Create our group
const group = group_new(72 /* size */);
group_add_face(group, 0 /* regular */, deferred_face_new(font_name.ptr, font_name.len, 0 /* text */));
group_add_face(group, 0 /* regular */, deferred_face_new(font_name.ptr, font_name.len, 1 /* emoji */));
// Create our group cache
const group_cache = group_cache_new(group);
// Render a glyph
for (let i = 33; i <= 126; i++) {
const font_idx = group_cache_index_for_codepoint(group_cache, i, 0, -1);
group_cache_render_glyph(group_cache, font_idx, i, 0);
//face_render_glyph(face, atlas, i);
}
const emoji = ["π","π","π","π±","πΏ","π","π","π","π‘","π"];
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 /* best choice */);
group_cache_render_glyph(group_cache, font_idx, cp, 0);
}
//face_render_glyph(face, atlas, "ζ©".codePointAt(0));
//face_render_glyph(face, atlas, "p".codePointAt(0));
// Debug our canvas
//face_debug_canvas(face);
// Let's try shaping
const shaper = shaper_new(120);
//const input = makeStr("helloπ");
const input = makeStr("helloπππ½");
shaper_test(shaper, group_cache, input.ptr, input.len);
const cp = 1114112;
const font_idx = group_cache_index_for_codepoint(group_cache, cp, 0, -1 /* best choice */);
group_cache_render_glyph(group_cache, font_idx, cp, -1);
// Debug our atlas canvas
{
const atlas = group_cache_atlas_greyscale(group_cache);
const id = atlas_debug_canvas(atlas);
document.getElementById("atlas-canvas").append(zjs.deleteValue(id));
}
{
const atlas = group_cache_atlas_color(group_cache);
const id = atlas_debug_canvas(atlas);
document.getElementById("atlas-color-canvas").append(zjs.deleteValue(id));
}
//face_free(face);
});
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