44 lines
1.9 KiB
JavaScript
44 lines
1.9 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.harfbuzzTest = void 0;
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var hb = require('harfbuzzjs/hbjs');
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var fs = require('fs');
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function harfbuzzTest(inputString) {
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WebAssembly.instantiate(fs.readFileSync(__dirname + "/../3rdparty/harfbuzzjs/hb.wasm"))
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.then(function (wsm) {
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hb = hb(wsm.instance);
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let fontdata = fs.readFileSync("/usr/share/fonts/truetype/freefont/FreeSerif.ttf");
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//hbjs(fontdata.instance);
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//console.log(a);
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var blob = hb.createBlob(fontdata); // Load the font data into something Harfbuzz can use
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var face = hb.createFace(blob, 0); // Select the first font in the file (there's normally only one!)
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var font = hb.createFont(face); // Create a Harfbuzz font object from the face
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var buffer = hb.createBuffer(); // Make a buffer to hold some text
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buffer.addText(inputString); // Fill it with some stuff
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buffer.guessSegmentProperties(); // Set script, language and direction
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hb.shape(font, buffer); // Shape the text, determining glyph IDs and positions
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var output = buffer.json();
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// Enumerate the glyphs
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console.log("id\tax\tdx\tdy");
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var xCursor = 0;
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var yCursor = 0;
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for (var glyph of output) {
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var glyphId = glyph.g;
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var xAdvance = glyph.ax;
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var xDisplacement = glyph.dx;
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var yDisplacement = glyph.dy;
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var svgPath = font.glyphToPath(glyphId);
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console.log(glyphId + "\t" + xAdvance + "\t" + xDisplacement + "\t" + yDisplacement);
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// You need to supply this bit
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//drawAGlyph(svgPath, xCursor + xDisplacement, yDisplacement);
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// xCursor += xAdvance;
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}
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// Release memory
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buffer.destroy();
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font.destroy();
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face.destroy();
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blob.destroy();
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});
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}
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exports.harfbuzzTest = harfbuzzTest;
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