87 lines
3.8 KiB
HTML
87 lines
3.8 KiB
HTML
<!DOCTYPE html>
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<title>scroll properties for elements with css zoom</title>
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<meta name="viewport" content="width=device-width,initial-scale=1">
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<link rel="author" title="Yotam Hacohen" href="mailto:yotha@chromium.org">
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<link rel="author" title="Google" href="http://www.google.com/">
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<link rel="help" href="https://drafts.csswg.org/cssom-view/#dom-element-scroll">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<head>
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<style>
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.container {
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height: 100px;
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width: 100px;
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overflow: scroll;
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}
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.content {
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height: 250px;
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width: 250px;
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background-image: linear-gradient(red, yellow);
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}
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#x4_zoom_container {
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zoom: 4;
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}
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</style>
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</head>
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<body>
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<div class="container" id="no_zoom_container">
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<div class="content"></div>
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</div>
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<div class="container" id="x4_zoom_container">
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<div class="content"></div>
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</div>
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<div class="container" id="container_with_zoomed_content">
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<div class="content" style="zoom: 2;"></div>
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</div>
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<div style="zoom: 2;">
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<div class="container" id="scroller_in_zoomed_element">
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<div class="content"></div>
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</div>
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</div>
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<script>
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setup(() => {
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window.noZoom = document.getElementById("no_zoom_container");
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window.withZoom = document.getElementById("x4_zoom_container");
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window.scrollerWithZoomContent = document.getElementById("container_with_zoomed_content");
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window.scrollerInZoomedElement = document.getElementById("scroller_in_zoomed_element");
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});
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test(function() {
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assert_true(!!noZoom, "no zoom target exists");
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assert_true(!!withZoom, "zoom target exists");
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});
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test(function() {
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// We remove zoom effects for scroll height and scroll width so values
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// should be same for elements with and without zoom
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// However scroll values should be changed by zoom on content
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assert_equals(noZoom.scrollHeight, withZoom.scrollHeight, 'scrollHeight');
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assert_equals(noZoom.scrollWidth, withZoom.scrollWidth, 'scrollWidth');
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assert_equals(noZoom.scrollHeight*2, scrollerWithZoomContent.scrollHeight, 'scroll height for zoomed content');
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assert_equals(noZoom.scrollWidth*2, scrollerWithZoomContent.scrollWidth, 'scroll width for zoomed content');
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assert_equals(noZoom.scrollHeight, scrollerInZoomedElement.scrollHeight, 'scroll height for scroller in zoomed element');
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assert_equals(noZoom.scrollWidth, scrollerInZoomedElement.scrollWidth, 'scroll width for scroller in zoomed element');
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}, `scroll{Width, Height}`);
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test(function() {
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assert_equals(noZoom.scrollTop, 0, 'scrollTop should be 0');
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assert_equals(noZoom.scrollLeft, 0, 'scrollLeft should be 0');
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assert_equals(noZoom.scrollTop, withZoom.scrollTop, 'scrollTop');
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assert_equals(noZoom.scrollLeft, withZoom.scrollLeft, 'scrollLeft');
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noZoom.scrollTo(noZoom.scrollWidth / 2, noZoom.scrollHeight / 2);
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withZoom.scrollTo(withZoom.scrollWidth / 2, withZoom.scrollHeight / 2);
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assert_not_equals(noZoom.scrollTop, 0, 'scrollTop should not be 0');
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assert_not_equals(noZoom.scrollLeft, 0, 'scrollLeft should not be 0');
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assert_equals(noZoom.scrollTop, withZoom.scrollTop, 'scrollTop after scrollTo');
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assert_equals(noZoom.scrollLeft, withZoom.scrollLeft, 'scrollLeft after scrollTo');
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noZoom.scrollBy(2, 2);
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withZoom.scrollBy(2, 2);
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assert_equals(noZoom.scrollTop, withZoom.scrollTop, 'scrollTop after scrollBy');
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assert_equals(noZoom.scrollLeft, withZoom.scrollLeft, 'scrollLeft after scrollBy');
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}, `scroll{Top, Left}`);
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</script>
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</body>
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