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| author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
|---|---|---|
| committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
| commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
| tree | 10027f336435511475e392454359edea8e25895d /layout/reftests/canvas/ctm-singular-sanity.html | |
| parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
| download | UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.lz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.xz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.zip | |
Add m-esr52 at 52.6.0
Diffstat (limited to 'layout/reftests/canvas/ctm-singular-sanity.html')
| -rw-r--r-- | layout/reftests/canvas/ctm-singular-sanity.html | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/layout/reftests/canvas/ctm-singular-sanity.html b/layout/reftests/canvas/ctm-singular-sanity.html new file mode 100644 index 000000000..7080ce7c3 --- /dev/null +++ b/layout/reftests/canvas/ctm-singular-sanity.html @@ -0,0 +1,53 @@ +<html> +<head> + <script type="text/javascript"> + +function assert(cond, msg) { if (!cond) { throw msg; } } + +function isSameTM(m1, m2) { + // XXX this is probably the ugliest possible way to write this function, + // but it's intended to be lowest-common-denominator + if (!(m1.length === 6 && m1.length === m2.length)) { + return false; + } + for (var i = 0; i < m1.length; ++i) { + if (m1[i] !== m2[i]) { + return false; + } + } + return true; +} + +window.onload = function() { + var IM = [ 1, 0, 0, 1, 0, 0 ]; + + try { + var ctx = document.getElementById("c1").getContext("2d"); + + var singular = [ 0, 0, 0, 0, 0, 0 ]; + ctx.mozCurrentTransform = singular; + assert(isSameTM(singular, ctx.mozCurrentTransform), + "Expected setting CTM to a singular matrix to work"); + var inv = ctx.mozCurrentTransformInverse; + assert(!isSameTM(inv, inv), + "Expected to get back matrix of NaN's from currentTransformInverse"); + ctx.mozCurrentTransform = IM; + + var m = [ 1, 2, 3, 4, 5, 6 ]; + ctx.mozCurrentTransform = m; + ctx.mozCurrentTransformInverse = singular; + assert(isSameTM(m, ctx.mozCurrentTransform), + "Setting currentTransformInverse to a singular matrix is a no-op"); + ctx.mozCurrentTransform = IM; + } 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> |