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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /layout/reftests/bugs/670442-1.html
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'layout/reftests/bugs/670442-1.html')
-rw-r--r--layout/reftests/bugs/670442-1.html41
1 files changed, 41 insertions, 0 deletions
diff --git a/layout/reftests/bugs/670442-1.html b/layout/reftests/bugs/670442-1.html
new file mode 100644
index 000000000..3823cd2ff
--- /dev/null
+++ b/layout/reftests/bugs/670442-1.html
@@ -0,0 +1,41 @@
+<!DOCTYPE html>
+<html>
+ <body>
+ <div>
+ <canvas id="c1" width="400" height="400"></canvas>
+ <canvas id="c2" width="400" height="400"></canvas>
+ </div>
+ <script type="text/javascript">
+ var canv1 = document.getElementById('c1');
+ var canv2 = document.getElementById('c2');
+ var ctx1 = canv1.getContext('2d');
+ var ctx2 = canv2.getContext('2d');
+
+ ctx1.strokeStyle = '#FF0000';
+ ctx1.moveTo(10, 10);
+ ctx1.lineTo(390, 390);
+ ctx1.stroke();
+
+ function doTest()
+ {
+ // Save img data
+ var imgData = ctx1.getImageData(0, 0, canv1.width, canv1.height);
+
+ // Resize canvas - seems to cause the bug
+ canv1.width = 0;
+ canv1.height = 0;
+ canv1.width = 400;
+ canv1.height = 400;
+
+ // Put image data from ctx1 to ctx2
+ ctx2.putImageData(imgData, 0, 0);
+
+ // Draw canvas2 on canvas1
+ ctx1.drawImage(canv2, 0, 0);
+ };
+
+ doTest();
+ doTest();
+ </script>
+ </body>
+</html>