| Nicolás Peña Moreno | 3efff9b | 2019-04-12 22:46:10 | [diff] [blame] | 1 | <!DOCTYPE HTML> |
| 2 | <meta charset=utf-8> |
| 3 | <title>Element Timing: observe inline image</title> |
| 4 | <body> |
| 5 | <style> |
| 6 | body { |
| 7 | margin: 0; |
| 8 | } |
| 9 | #inline_wee { |
| 10 | display: block; |
| 11 | } |
| 12 | </style> |
| 13 | <script src="/resources/testharness.js"></script> |
| 14 | <script src="/resources/testharnessreport.js"></script> |
| 15 | <script src="resources/element-timing-helpers.js"></script> |
| 16 | <script> |
| 17 | let beforeRender = performance.now(); |
| 18 | async_test(function (t) { |
| Nicolás Peña Moreno | bd2c049 | 2020-01-23 16:37:25 | [diff] [blame] | 19 | assert_precondition(window.PerformanceElementTiming, "PerformanceElementTiming is not implemented"); |
| Nicolás Peña Moreno | 3efff9b | 2019-04-12 22:46:10 | [diff] [blame] | 20 | const observer = new PerformanceObserver( |
| 21 | t.step_func_done(function(entryList) { |
| 22 | assert_equals(entryList.getEntries().length, 1); |
| 23 | const entry = entryList.getEntries()[0]; |
| 24 | // Only the first characters of the data URI are included in the entry. |
| 25 | const uriPrefix = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKAQMAAAC3/F3+AAAABGdBTUEAALGPC/xhBQAAACBjSFJNAA'; |
| 26 | checkElementWithoutResourceTiming(entry, uriPrefix, 'my_img', 'inline_wee', |
| Nicolás Peña Moreno | 66bb6b4 | 2019-05-01 17:40:58 | [diff] [blame] | 27 | beforeRender, document.getElementById('inline_wee')); |
| Nicolás Peña Moreno | 3efff9b | 2019-04-12 22:46:10 | [diff] [blame] | 28 | // The image is a red square of length 10. |
| 29 | checkRect(entry, [0, 10, 0, 10]); |
| 30 | checkNaturalSize(entry, 10, 10); |
| 31 | }) |
| 32 | ); |
| 33 | observer.observe({entryTypes: ['element']}); |
| 34 | }, 'Inline image is observable via Element Timing.'); |
| 35 | </script> |
| 36 | <img elementtiming='my_img' id='inline_wee' src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKAQMAAAC3/F3+AAAABGdBTUEAALGPC/xhBQAAACBjSFJNAAB6JgAAgIQAAPoAAACA6AAAdTAAAOpgAAA6mAAAF3CculE8AAAABlBMVEX/AAD///9BHTQRAAAAAWJLR0QB/wIt3gAAAAtJREFUCNdjYMAHAAAeAAFuhUcyAAAAJXRFWHRkYXRlOmNyZWF0ZQAyMDE5LTA0LTA1VDIwOjA4OjQxKzAyOjAwPa6EZwAAACV0RVh0ZGF0ZTptb2RpZnkAMjAxOS0wNC0wNVQyMDowODo0MSswMjowMEzzPNsAAAAASUVORK5CYII="/> |
| 37 | </body> |
