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<!DOCTYPE html>
<html>
<meta charset=utf-8>
<title>COLRv1 font test: compositing operators</title>
<style>
.ref { margin: 10px; padding: 10px; line-height: 0; font-size: 0; }
span { display: inline-block; width: 100px; height: 100px; position: relative; }
</style>
<p>Some glyphs using PAINT_COMPOSITE:</p>
<!-- using blocks to imitate the composited layers in CAhem.ttf -->
<div class="ref">
<span class=g>
<div style="background: red; width: 70px; height: 70px; position: absolute; top: 0px; left: 0px;"></div>
<div style="background: blue; width: 70px; height: 70px; position: absolute; bottom: 0px; right: 0px;"></div>
</span>
<span class=h>
<div style="background: blue; width: 70px; height: 70px; position: absolute; bottom: 0px; right: 0px;"></div>
<div style="background: red; width: 40px; height: 40px; position: absolute; top: 30px; left: 30px;"></div>
</span>
<span class=i>
<div style="background: blue; width: 70px; height: 70px; position: absolute; bottom: 0px; right: 0px;"></div>
<div style="background: white; width: 40px; height: 40px; position: absolute; top: 30px; left: 30px;"></div>
</span>
<span class=j>
<div style="background: red; width: 40px; height: 40px; position: absolute; top: 30px; left: 30px;"></div>
</span>
<span class=k>
<div style="background: red; width: 70px; height: 70px; position: absolute; top: 0px; left: 0px;"></div>
<div style="background: blue; width: 70px; height: 70px; position: absolute; bottom: 0px; right: 0px;"></div>
<div style="background: black; width: 40px; height: 40px; position: absolute; top: 30px; left: 30px;"></div>
</span>
<span class=l>
<div style="background: red; width: 70px; height: 70px; position: absolute; top: 0px; left: 0px;"></div>
<div style="background: blue; width: 70px; height: 70px; position: absolute; bottom: 0px; right: 0px;"></div>
<div style="background: magenta; width: 40px; height: 40px; position: absolute; top: 30px; left: 30px;"></div>
</span>
</div>
<p>And painting them to a canvas element:</p>
<canvas id=c width=600 height=100></canvas>
<script>
ctx = c.getContext("2d");
// glyph "g"
ctx.fillStyle = "red";
ctx.fillRect(0, 0, 70, 70);
ctx.fillStyle = "blue";
ctx.fillRect(30, 30, 70, 70);
ctx.translate(100, 0);
// glyph "h"
ctx.fillStyle = "blue";
ctx.fillRect(30, 30, 70, 70);
ctx.fillStyle = "red";
ctx.fillRect(30, 30, 40, 40);
ctx.translate(100, 0);
// glyph "i"
ctx.fillStyle = "blue";
ctx.fillRect(30, 30, 70, 70);
ctx.fillStyle = "white";
ctx.fillRect(30, 30, 40, 40);
ctx.translate(100, 0);
// glyph "j"
ctx.fillStyle = "red";
ctx.fillRect(30, 30, 40, 40);
ctx.translate(100, 0);
// glyph "k"
ctx.fillStyle = "red";
ctx.fillRect(0, 0, 70, 70);
ctx.fillStyle = "blue";
ctx.fillRect(30, 30, 70, 70);
ctx.fillStyle = "black";
ctx.fillRect(30, 30, 40, 40);
ctx.translate(100, 0);
// glyph "l"
ctx.fillStyle = "red";
ctx.fillRect(0, 0, 70, 70);
ctx.fillStyle = "blue";
ctx.fillRect(30, 30, 70, 70);
ctx.fillStyle = "magenta";
ctx.fillRect(30, 30, 40, 40);
ctx.translate(100, 0);
</script>