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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
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| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
| commit | 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch) | |
| tree | a31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /testing/web-platform/tests/element-timing/observe-multiple-images.html | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.tar.xz firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.zip | |
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/element-timing/observe-multiple-images.html')
| -rw-r--r-- | testing/web-platform/tests/element-timing/observe-multiple-images.html | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/testing/web-platform/tests/element-timing/observe-multiple-images.html b/testing/web-platform/tests/element-timing/observe-multiple-images.html new file mode 100644 index 0000000000..c5ea700553 --- /dev/null +++ b/testing/web-platform/tests/element-timing/observe-multiple-images.html @@ -0,0 +1,122 @@ +<!DOCTYPE HTML> +<meta charset=utf-8> +<title>Element Timing: multiple images</title> +<body> +<style> +body { + margin: 0; +} +#img1 { + display: block; + margin-left: auto; + margin-right: auto; +} +#img2 { + margin-top:150px; + margin-left:50px; +} +</style> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="resources/element-timing-helpers.js"></script> +<script> + let beforeRender, image1Observed=0, image2Observed=0, image3Observed=0; + async_test(function (t) { + assert_implements(window.PerformanceElementTiming, "PerformanceElementTiming is not implemented"); + const observer = new PerformanceObserver( + t.step_func(function(entryList) { + entryList.getEntries().forEach( entry => { + if (entry.identifier === 'image1') { + if (image1Observed) { + assert_unreached("Observer received image1 more than once"); + t.done(); + } + image1Observed = 1; + const pathname1 = window.location.origin + '/element-timing/resources/square100.png'; + // The images do not contain ID, so expect an empty ID. + checkElement(entry, pathname1, 'image1', 'img1', beforeRender, + document.getElementById('img1')); + // This image is horizontally centered. + // Using abs and comparing to 1 because the viewport sizes could be odd. + // If a size is odd, then image cannot be in the pure center, but left + // and right should still be very close to their estimated coordinates. + assert_less_than_equal(Math.abs(entry.intersectionRect.left - + (document.documentElement.clientWidth / 2 - 50)), 1, + 'left of rect for image1'); + assert_less_than_equal(Math.abs(entry.intersectionRect.right - + (document.documentElement.clientWidth / 2 + 50)), 1, + 'right of rect for image1'); + assert_equals(entry.intersectionRect.top, 0, 'top of rect for image1'); + assert_equals(entry.intersectionRect.bottom, + 100, 'bottom of rect for image1'); + checkNaturalSize(entry, 100, 100); + } + else if (entry.identifier === 'image2') { + if (image2Observed) { + assert_unreached("Observer received image2 more than once"); + t.done(); + } + image2Observed = 1; + const pathname2 = window.location.origin + '/element-timing/resources/square20.png'; + checkElement(entry, pathname2, 'image2', 'img2', beforeRender, + document.getElementById('img2')); + // This image should be below image 1, and should respect the margin. + checkRect(entry, [50, 250, 250, 450], "of image2"); + checkNaturalSize(entry, 20, 20); + } + else if (entry.identifier === 'image3') { + if (image3Observed) { + assert_unreached("Observer received image3 more than once"); + t.done(); + } + image3Observed = 1; + const pathname3 = window.location.origin + '/element-timing/resources/circle.svg'; + checkElement(entry, pathname3, 'image3', 'img3', beforeRender, + document.getElementById('img3')); + // This image is just to the right of image2. + checkRect(entry, [250, 450, 250, 450], "of image3"); + checkNaturalSize(entry, 200, 200); + } + else { + assert_unreached("Received an unexpected identifier."); + t.done(); + } + if (image1Observed && image2Observed && image3Observed) { + t.done(); + } + }); + }) + ); + observer.observe({entryTypes: ['element']}); + function addImage(number, source, width=0) { + const img = document.createElement('img'); + img.src = source; + // Set a different id and elementtiming value for each image. + img.id = 'img' + number; + img.setAttribute('elementtiming', 'image' + number); + if (width !== 0) + img.width = width; + document.body.appendChild(img); + } + // Add the images during onload to be sure that the observer is registered in + // time to observe the element timing. + window.onload = () => { + addImage(1, 'resources/square100.png'); + // Use requestAnimationFrame and a timeout to ensure that the images are + // processed in the order we want. + requestAnimationFrame( () => { + t.step_timeout( () => { + // Set the size equal to that of image3 to make positioning easier. + addImage(2, 'resources/square20.png', 200); + requestAnimationFrame( () => { + t.step_timeout( () => { + addImage(3, 'resources/circle.svg'); + }, 0); + }); + }, 0); + }); + beforeRender = performance.now(); + }; + }, 'PerformanceObserver can observe multiple image elements.'); +</script> +</body> |