CanvasGradient addColorStop supports color-mix

Bug: 327837697 Change-Id: I5f5b21c011fab15d81e196be0d7f2279a6e82ec2 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5371273 Commit-Queue: Perry <[email protected]> Reviewed-by: Aaron Krajeski <[email protected]> Cr-Commit-Position: refs/heads/main@{#1279417}
web-platform-tests · Mar 28, 2024 · 94d4057 · 94d4057
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diff --git a/html/canvas/element/fill-and-stroke-styles/2d.gradient.colormix.html b/html/canvas/element/fill-and-stroke-styles/2d.gradient.colormix.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
+<title>Canvas test: 2d.gradient.colormix</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/html/canvas/resources/canvas-tests.js"></script>
+<link rel="stylesheet" href="/html/canvas/resources/canvas-tests.css">
+<body class="show_output">
+
+<h1>2d.gradient.colormix</h1>
+<p class="desc">color-mix works as CanvasGradient color input</p>
+
+
+<p class="output">Actual output:</p>
+<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
+
+<ul id="d"></ul>
+<script>
+var t = async_test("color-mix works as CanvasGradient color input");
+_addTest(function(canvas, ctx) {
+
+  var g = ctx.createLinearGradient(0, 0, 100, 0);
+  g.addColorStop(0, '#f00');
+  g.addColorStop(1, 'color-mix(in srgb, #0f0, #00f)');
+  ctx.fillStyle = g;
+  ctx.fillRect(0, 0, 100, 50);
+  _assertPixelApprox(canvas, 25,25, 212,81,61,255, 3);
+  _assertPixelApprox(canvas, 50,25, 167,106,88,255, 3);
+  _assertPixelApprox(canvas, 75,25, 113,120,109,255, 3);
+
+});
+</script>
+
diff --git a/html/canvas/tools/yaml-new/fill-and-stroke-styles.yaml b/html/canvas/tools/yaml-new/fill-and-stroke-styles.yaml
@@ -2108,3 +2108,16 @@
     @assert ctx.strokeStyle === 'color(srgb 0.5 0 0.5)';
     ctx.strokeStyle = "color-mix(in srgb, red, color(srgb 1 0 0))";
     @assert ctx.strokeStyle === 'color(srgb 1 0 0)';
+
+- name: 2d.gradient.colormix
+  desc: color-mix works as CanvasGradient color input
+  canvasType: ['HtmlCanvas']
+  code: |
+    var g = ctx.createLinearGradient(0, 0, 100, 0);
+    g.addColorStop(0, '#f00');
+    g.addColorStop(1, 'color-mix(in srgb, #0f0, #00f)');
+    ctx.fillStyle = g;
+    ctx.fillRect(0, 0, 100, 50);
+    @assert pixel 25,25 ==~ 212,81,61,255 +/- 3;
+    @assert pixel 50,25 ==~ 167,106,88,255 +/- 3;
+    @assert pixel 75,25 ==~ 113,120,109,255 +/- 3;