File: detached-HTMLCanvasElement.html

package info (click to toggle)
firefox 144.0-1
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 4,637,504 kB
  • sloc: cpp: 7,576,692; javascript: 6,430,831; ansic: 3,748,119; python: 1,398,978; xml: 628,810; asm: 438,679; java: 186,194; sh: 63,212; makefile: 19,159; objc: 13,086; perl: 12,986; yacc: 4,583; cs: 3,846; pascal: 3,448; lex: 1,720; ruby: 1,003; exp: 762; php: 436; lisp: 258; awk: 247; sql: 66; sed: 53; csh: 10
file content (26 lines) | stat: -rw-r--r-- 833 bytes parent folder | download | duplicates (16) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
 
<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>

async_test(t => {
  let iframe = document.createElement('iframe');
  let html = "<canvas id='canvas' width=10 height=10></canvas>";
  iframe.srcdoc = html;
  iframe.onload = t.step_func_done(() => {
    // This detaches the frame while retaining a reference to an
    // HTMLCanvasElement from it.
    let canvas = iframe.contentWindow.document.getElementById('canvas');
    document.body.removeChild(iframe);

    // Creation of the ImageCapture object (as part of the MediaStreamTrack)
    // should be safe even if the frame is detached.
    canvas.captureStream();
  });

  document.body.appendChild(iframe);
}, 'MediaStreamTrack can be obtained from a detached frame');

</script>
</body>