| <!DOCTYPE html> |
| <link rel="help" href="https://drafts.csswg.org/css-scroll-snap-1/#scroll-snap-type" /> |
| <meta name="viewport" content="user-scalable=no"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| html { |
| margin: 0px; |
| overflow: scroll; |
| scroll-snap-type: both mandatory; |
| } |
| div { |
| position: absolute; |
| } |
| .scroller { |
| overflow: scroll; |
| scroll-snap-type: both mandatory; |
| } |
| #inner-scroller { |
| top: 3000px; |
| width: 800px; |
| height: 800px; |
| } |
| .space { |
| left: 0px; |
| top: 0px; |
| width: 4000px; |
| height: 4000px; |
| } |
| .target { |
| width: 600px; |
| height: 600px; |
| scroll-snap-align: start; |
| } |
| |
| .left { |
| left: 0px; |
| } |
| .right { |
| left: 1000px; |
| } |
| .top { |
| top: 0px; |
| } |
| .bottom { |
| top: 1000px; |
| } |
| </style> |
| <body class="scroller"> |
| <div class="space"></div> |
| <div class="target left top"></div> |
| <div class="target right top"></div> |
| <div class="target left bottom"></div> |
| <div class="target right bottom"></div> |
| <div class="scroller" id="inner-scroller"> |
| <div class="space"></div> |
| <div class="target left top"></div> |
| <div class="target right top"></div> |
| <div class="target left bottom"></div> |
| <div class="target right bottom"></div> |
| </div> |
| </body> |
| |
| <script> |
| function format_dict(dict) { |
| const props = []; |
| for (let prop in dict) { |
| props.push(`${prop}: ${format_value(dict[prop])}`); |
| } |
| return `{${props.join(', ')}}`; |
| } |
| |
| var divScroller = document.getElementById("inner-scroller"); |
| var viewport = document.scrollingElement; |
| [ |
| [{left: 800}, 1000, 0], |
| [{top: 900}, 0, 1000], |
| [{left: 900, top: 800}, 1000, 1000], |
| [{left: 800, top: -100}, 1000, 0], /* outside bounds on y axis */ |
| [{left: 10000, top: -100}, 1000, 0] /* outside bounds on both axes */ |
| ].forEach(([input, expectedX, expectedY]) => { |
| test(() => { |
| divScroller.scrollTo(0, 0); |
| assert_equals(divScroller.scrollLeft, 0); |
| assert_equals(divScroller.scrollTop, 0); |
| if (input.left) |
| divScroller.scrollLeft = input.left; |
| if (input.top) |
| divScroller.scrollTop = input.top; |
| assert_equals(divScroller.scrollLeft, expectedX); |
| assert_equals(divScroller.scrollTop, expectedY); |
| }, `assign scrollLeft and scrollTop for ${format_dict(input)} on div lands on (${expectedX}, ${expectedY})`); |
| |
| test(() => { |
| viewport.scrollTo(0, 0); |
| assert_equals(viewport.scrollLeft, 0); |
| assert_equals(viewport.scrollTop, 0); |
| if (input.left) |
| viewport.scrollLeft = input.left; |
| if (input.top) |
| viewport.scrollTop = input.top; |
| assert_equals(viewport.scrollLeft, expectedX); |
| assert_equals(viewport.scrollTop, expectedY); |
| }, `assign scrollLeft and scrollTop for ${format_dict(input)} on viewport-defining element lands on (${expectedX}, ${expectedY})`); |
| |
| test(() => { |
| divScroller.scrollTo(0, 0); |
| assert_equals(divScroller.scrollLeft, 0); |
| assert_equals(divScroller.scrollTop, 0); |
| divScroller.scrollTo(input); |
| assert_equals(divScroller.scrollLeft, expectedX); |
| assert_equals(divScroller.scrollTop, expectedY); |
| }, `scrollTo(${format_dict(input)}) on div lands on (${expectedX}, ${expectedY})`); |
| |
| test(() => { |
| divScroller.scrollTo(0, 0); |
| assert_equals(divScroller.scrollLeft, 0); |
| assert_equals(divScroller.scrollTop, 0); |
| divScroller.scrollBy(input); |
| assert_equals(divScroller.scrollLeft, expectedX); |
| assert_equals(divScroller.scrollTop, expectedY); |
| }, `scrollBy(${format_dict(input)}) on div lands on (${expectedX}, ${expectedY})`); |
| |
| test(() => { |
| viewport.scrollTo(0, 0); |
| assert_equals(viewport.scrollLeft, 0); |
| assert_equals(viewport.scrollTop, 0); |
| viewport.scrollTo(input); |
| assert_equals(viewport.scrollLeft, expectedX); |
| assert_equals(viewport.scrollTop, expectedY); |
| }, `scrollTo(${format_dict(input)}) on viewport-defining element lands on (${expectedX}, ${expectedY})`); |
| |
| test(() => { |
| viewport.scrollTo(0, 0); |
| assert_equals(viewport.scrollLeft, 0); |
| assert_equals(viewport.scrollTop, 0); |
| viewport.scrollBy(input); |
| assert_equals(viewport.scrollLeft, expectedX); |
| assert_equals(viewport.scrollTop, expectedY); |
| }, `scrollBy(${format_dict(input)}) on viewport-defining element lands on (${expectedX}, ${expectedY})`); |
| |
| test(() => { |
| window.scrollTo(0, 0); |
| assert_equals(window.scrollX, 0); |
| assert_equals(window.scrollY, 0); |
| window.scrollTo(input); |
| assert_equals(window.scrollX, expectedX); |
| assert_equals(window.scrollY, expectedY); |
| }, `scrollTo(${format_dict(input)}) on window lands on (${expectedX}, ${expectedY})`); |
| |
| test(() => { |
| window.scrollTo(0, 0); |
| assert_equals(window.scrollX, 0); |
| assert_equals(window.scrollY, 0); |
| window.scrollBy(input); |
| assert_equals(window.scrollX, expectedX); |
| assert_equals(window.scrollY, expectedY); |
| }, `scrollBy(${format_dict(input)}) on window lands on (${expectedX}, ${expectedY})`); |
| }); |
| </script> |
