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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 /layout/reftests/canvas/ctm-sanity.html
parentInitial commit. (diff)
downloadfirefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz
firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'layout/reftests/canvas/ctm-sanity.html')
-rw-r--r--layout/reftests/canvas/ctm-sanity.html85
1 files changed, 85 insertions, 0 deletions
diff --git a/layout/reftests/canvas/ctm-sanity.html b/layout/reftests/canvas/ctm-sanity.html
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+++ b/layout/reftests/canvas/ctm-sanity.html
@@ -0,0 +1,85 @@
+<html>
+<head>
+ <script type="text/javascript">
+function assert(cond, msg) {
+ if (!cond) {
+ throw msg;
+ }
+}
+
+assert.equal = function(m1, m2, msg) {
+ assert(
+ m1.is2D &&
+ m2.is2D &&
+ m1.a === m2.a &&
+ m1.b === m2.b &&
+ m1.c === m2.c &&
+ m1.d === m2.d &&
+ m1.e === m2.e &&
+ m1.f === m2.f,
+ msg
+ );
+};
+
+window.onload = function() {
+ var IM = new DOMMatrix([1, 0, 0, 1, 0, 0]);
+
+ try {
+ var ctx = document.getElementById("c1").getContext("2d");
+
+ assert.equal(ctx.getTransform(), IM, "Transform is identity by default");
+ assert.equal(
+ ctx.getTransform().invertSelf(),
+ IM,
+ "Inverse transform is identity by default"
+ );
+
+ var m = new DOMMatrix([1, 2, 3, 4, 5, 6]);
+ ctx.setTransform(m);
+ assert.equal(ctx.getTransform(), m, "Transform successfully set");
+
+ var badVals = [
+ ["string"],
+ [-1],
+ ["string", 1, 2, 3, 4, 5],
+ [{ obj: true }, 1, 2, 3, 4, 5],
+ ];
+ for (var i = 0; i < badVals.length; ++i) {
+ try {
+ ctx.setTransform(...badVals[i]);
+ } catch {}
+ assert.equal(
+ ctx.getTransform(),
+ m,
+ "Expected |setTransform(" + badVals[i] + ")| to not change transform"
+ );
+ }
+
+ ctx.setTransform(IM);
+ var noopVals = [
+ [Number.NaN, 1, 2, 3, 4, 5],
+ [Infinity, 1, 2, 3, 4, 5],
+ ];
+ for (var i = 0; i < noopVals.length; ++i) {
+ ctx.setTransform(...noopVals[i]);
+ assert.equal(
+ ctx.getTransform(),
+ IM,
+ "Illegal float values result in a no-op"
+ );
+ }
+
+ ctx.setTransform(m.a, m.b, m.c, m.d, m.e, m.f);
+ assert.equal(ctx.getTransform(), m, "setTransform() updates transform");
+ } catch (e) {
+ document.body.innerHTML = "FAIL: " + e.toString();
+ return;
+ }
+ document.body.innerHTML = "Pass";
+};
+ </script>
+</head>
+<body>
+ <div><canvas id="c1" width="300" height="300"></canvas></div>
+</body>
+</html>