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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 19:33:14 +0000
commit36d22d82aa202bb199967e9512281e9a53db42c9 (patch)
tree105e8c98ddea1c1e4784a60a5a6410fa416be2de /testing/web-platform/tests/resize-observer/create-pattern-data-url.js
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/resize-observer/create-pattern-data-url.js')
-rw-r--r--testing/web-platform/tests/resize-observer/create-pattern-data-url.js22
1 files changed, 22 insertions, 0 deletions
diff --git a/testing/web-platform/tests/resize-observer/create-pattern-data-url.js b/testing/web-platform/tests/resize-observer/create-pattern-data-url.js
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+++ b/testing/web-platform/tests/resize-observer/create-pattern-data-url.js
@@ -0,0 +1,22 @@
+const patternSize = 4;
+
+export default function createPatternDataURL() {
+ const ctx = document.createElement('canvas').getContext('2d');
+ ctx.canvas.width = patternSize;
+ ctx.canvas.height = patternSize;
+
+ const b = [0, 0, 0, 255];
+ const t = [0, 0, 0, 0];
+ const r = [255, 0, 0, 255];
+ const g = [0, 255, 0, 255];
+
+ const imageData = new ImageData(patternSize, patternSize);
+ imageData.data.set([
+ b, t, t, r,
+ t, b, g, t,
+ t, r, b, t,
+ g, t, t, b,
+ ].flat());
+ ctx.putImageData(imageData, 0, 0);
+ return {patternSize, dataURL: ctx.canvas.toDataURL()};
+}