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<!DOCTYPE HTML> |
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<!DOCTYPE HTML> |
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<html class="reftest-wait"> |
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<html class="reftest-wait"> |
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<head> |
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<head> |
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<title>Delayed image reftest wrapper</title> |
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<title>Delayed image reftest wrapper</title> |
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</head> |
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</head> |
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<body> |
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<body onload="runTests()"> |
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<img id="image1"> |
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<img id="image1"> |
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<script> |
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<script> |
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// This loads a externally specified image, forces a draw (in case of |
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// This loads a externally specified image, forces a draw (in case of |
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// decode-on-draw), waits 350ms, and then triggers the reftest snapshot. |
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// decode-on-draw), waits for a repaint, and then triggers the reftest snapshot. |
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// This allows the animation on the page to complete. |
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// This allows the animation on the page to complete. |
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// |
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// |
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// Use as "delaytest.html?animation.png" |
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// Use as "delaytest.html?animation.png" |
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// |
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// |
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// Get the image URL from our URL |
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function runTests() { |
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var imgURL = document.location.search.substr(1); |
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// Get the image URL from our URL |
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var imgURL = document.location.search.substr(1); |
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// Load the image |
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// Load the image |
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var img = document.images[0]; |
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var img = document.images[0]; |
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img.src = imgURL; |
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img.src = imgURL; |
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img.onload = forceDecode; |
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img.onload = forceDecode; |
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function forceDecode() { |
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function forceDecode() { |
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// We need to force drawing of the image in an invisible context |
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// We need to force drawing of the image in an invisible context |
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var canvas = document.createElement("canvas"); |
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var canvas = document.createElement("canvas"); |
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var ctx = canvas.getContext("2d"); |
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var ctx = canvas.getContext("2d"); |
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ctx.drawImage(img, 0, 0); |
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ctx.drawImage(img, 0, 0); |
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// We've force the decode. start the timer to trigger the reftest |
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// We've force the decode. wait for a repaint, and trigger the reftest |
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startTimer(); |
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waitForRepaint(); |
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} |
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function waitForRepaint() { |
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var repaints = 0; |
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const expectedRepaints = 2; |
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window.addEventListener("MozAfterPaint", function() { |
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if (++repaints != expectedRepaints) |
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return; |
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window.removeEventListener("MozAfterPaint", arguments.callee, false); |
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document.documentElement.className = ""; |
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}, false); |
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} |
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} |
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} |
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function startTimer() { |
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const delay = 350; |
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setTimeout("document.documentElement.className = '';", delay); |
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} |
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</script> |
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</script> |
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</body> |
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</body> |
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</html> |
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</html> |