cc9a6db853
Ref: #1379 This takes a naive approach to font-width computation, the most compute-intensive part of rendering badges. 1. Add the widths of the individual characters. - These widths are measured on startup using PDFKit. 2. For each character pair, add a kerning adjustment - The difference between the width of each character pair, and the sum of the characters' separate widths. - These are computed for each character pair on startup using PDFKit. 3. For a string with characters outside the printable ASCII character set, fall back to PDFKit. This branch averaged 0.041 ms in `makeBadge`, compared to 0.144 ms on master, a speedup of 73%. That was on a test of 10,000 consecutive requests (using the `benchmark-performance.sh` script, now checked in). The speedup applies to badges containing exclusively printable ASCII characters. It wouldn't be as dramatic on non-ASCII text. Though, we could add some frequently used non-ASCII characters to the cached set.
11 lines
188 B
JavaScript
11 lines
188 B
JavaScript
'use strict';
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const path = require('path');
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module.exports = {
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font: {
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// i.e. Verdana.ttf in the root of the project.
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path: path.join(__dirname, '..', 'Verdana.ttf'),
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},
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};
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