test_bug514127.html (1580B)
1 <!DOCTYPE HTML> 2 <html> 3 <!-- 4 https://bugzilla.mozilla.org/show_bug.cgi?id=514127 5 --> 6 <head> 7 <title>Test for Bug 514127</title> 8 <script src="/tests/SimpleTest/SimpleTest.js"></script> 9 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> 10 </head> 11 <body onload="runTest();"> 12 <p><a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=514127">Mozilla Bug 514127</a></p> 13 14 <!-- 15 iframe source is 16 <html><body style='background: rgb(0,0,255); width: 100px; height: 50100px;'></body></html> 17 --> 18 <iframe id="source" width="50" height="50" 19 src="data:text/html,%3Chtml%3E%3Cbody%20style%3D%27background%3A%20rgb%280%2C0%2C255%29%3B%20width%3A%20100px%3B%20height%3A%2050100px%3B%27%3E%3C%2Fbody%3E%3C%2Fhtml%3E"></iframe> 20 21 <pre id="test"> 22 <script type="application/javascript"> 23 24 /** Test for Bug 514127 */ 25 26 SimpleTest.waitForExplicitFinish(); 27 28 function runTest() { 29 30 var source = document.getElementById('source').contentWindow; 31 var canvasWidth = 50; 32 var canvasHeight = 50; 33 34 rect = { left: 25, top: 50000, 35 width: canvasWidth, height: canvasHeight }; 36 var canvas = SpecialPowers.snapshotRect(source, rect, "transparent"); 37 var context = canvas.getContext("2d"); 38 39 var data = context.getImageData(0, 0, canvasWidth, canvasHeight).data; 40 var failed = false; 41 for (var i = 0; i < data.length; i+=4) { 42 if (data[i] != 0 || data[i+1] != 0 || data[i+2] != 255 || data[i+3] != 255) { 43 failed = true; 44 break; 45 } 46 } 47 ok(!failed, "all pixels blue"); 48 49 SimpleTest.finish(); 50 } 51 52 </script> 53 </pre> 54 </body> 55 </html>