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index.html
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<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<script src="/node_modules/canvaskit-wasm/bin/canvaskit.js"></script>
<title>Canvas</title>
</head>
<body>
<style type="text/css">
@font-face {
font-family: 'Iosevka Slab';
src: url('/__test__/fonts/iosevka-slab-regular.ttf');
}
body {
font-family: 'Iosevka Slab';
}
canvas {
margin-top: 100px;
}
</style>
<canvas width="1024" height="768" id="canvas"></canvas>
<canvas width="1024" height="768" id="canvas-text"></canvas>
<canvas width="512" height="512" id="regression"></canvas>
<canvas width="512" height="512" id="text"></canvas>
<img width="200" height="200" id="firefox" src="/__test__/fixtures/filter-combine-contrast-brightness.jpeg" />
<script>
setTimeout(() => {
const canvas = document.getElementById('canvas')
/**
* @type {CanvasRenderingContext2D}
*/
const ctx = canvas.getContext('2d')
ctx.fillStyle = 'yellow'
ctx.fillRect(0, 0, canvas.width, canvas.height)
ctx.strokeStyle = 'black'
ctx.lineWidth = 3
ctx.font = '50px Iosevka Slab'
const metrics = ctx.measureText('@napi-rs/canvas')
console.info(metrics)
const baselines = ['top', 'hanging', 'middle', 'alphabetic', 'ideographic', 'bottom']
baselines.forEach(function (baseline) {
ctx.textBaseline = baseline
const metrics = ctx.measureText('@napi-rs/canvas')
console.info(baseline, metrics)
})
ctx.strokeText('skr canvas', 50, 150)
ctx.strokeText('@napi-rs/canvas', 50, 300)
}, 300)
setTimeout(() => {
const canvas = document.getElementById('canvas-text')
/**
* @type {CanvasRenderingContext2D}
*/
const ctx = canvas.getContext('2d')
ctx.fillStyle = 'yellow'
ctx.fillRect(0, 0, canvas.width, canvas.height)
const baselines = ['top', 'hanging', 'middle', 'alphabetic', 'ideographic', 'bottom']
ctx.font = '50px Iosevka Slab'
ctx.fillStyle = 'black'
baselines.forEach(function (baseline, index) {
ctx.textBaseline = baseline
const y = 75 + index * 75
ctx.beginPath()
ctx.moveTo(0, y + 0.5)
ctx.lineTo(550, y + 0.5)
ctx.stroke()
ctx.fillText('Abcdefghijklmnop (' + baseline + ')', 0, y)
})
}, 300)
</script>
<script>
setTimeout(() => {
const canvas = document.getElementById('regression')
const ctx = canvas.getContext('2d')
ctx.filter = 'contrast(175%) brightness(103%)'
const image = document.querySelector('#firefox')
ctx.drawImage(image, 0, 0)
}, 1000)
</script>
<script>
setTimeout(() => {
const canvas = document.getElementById('text')
const ctx = canvas.getContext('2d')
for (const align of ['center', 'end', 'left', 'right', 'start']) {
const x = canvas.width / 2
ctx.strokeStyle = 'black'
ctx.moveTo(x, 0)
ctx.lineTo(x, canvas.height)
ctx.stroke()
ctx.textAlign = align
ctx.font = '16px Iosevka Slab'
ctx.fillText('Hello Canvas', x, 200)
}
}, 1000)
</script>
</body>
</html>