| <!DOCTYPE html> |
| <title>CSSOM View - scrollIntoView considers vertical-rl writing mode</title> |
| <meta charset="utf-8"> |
| <link rel="author" title="Suneel Kota" href="mailto:suneel.kota@samsung.com"> |
| <link rel="help" href="https://drafts.csswg.org/cssom-view/#dom-element-scrollintoview"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| |
| <style> |
| .box { |
| float: left; |
| width: 200px; |
| height: 200px; |
| } |
| #scroller { |
| writing-mode: vertical-rl; |
| overflow: scroll; |
| width: 300px; |
| height: 300px; |
| } |
| #container{ |
| width: 600px; |
| height: 600px; |
| } |
| #target { |
| background-color: #ff0; |
| } |
| </style> |
| <body> |
| <div id="scroller"> |
| <div id="container"> |
| <!-- ROW-1 --> |
| <div class="row"> |
| <div class="box"></div> |
| <div class="box"></div> |
| <div class="box"></div> |
| </div> |
| |
| <!-- ROW-2 --> |
| <div class="row"> |
| <div class="box"></div> |
| <div class="box" id="target"></div> |
| <div class="box"></div> |
| </div> |
| |
| <!-- ROW-3 --> |
| <div class="row"> |
| <div class="box"></div> |
| <div class="box"></div> |
| <div class="box"></div> |
| </div> |
| </div> |
| </div> |
| |
| <script> |
| var target = document.getElementById("target"); |
| var scroller = document.getElementById("scroller"); |
| var scrollbar_width = scroller.offsetWidth - scroller.clientWidth; |
| |
| var scroller_width = scroller.offsetWidth; |
| var scroller_height = scroller.offsetHeight; |
| var box_width = target.offsetWidth; |
| var box_height = target.offsetHeight; |
| |
| var expectedX = [ ((2*box_width)-scroller_width)+scrollbar_width, ((3*box_width - scroller_width)/2)+ (scrollbar_width/2), box_width ]; |
| var expectedY = [ box_height, ((3*box_height - scroller_height)/2) + (scrollbar_width/2), ((2*box_height)-scroller_height) + scrollbar_width ]; |
| |
| // As browsers differ in the meaning of scrollLeft when |
| // in a right-to-left mode, we adjust the expectation |
| // to match the semantics of scrollLeft. |
| if(scroller.scrollLeft === 0) |
| expectedX = [ -box_width, -(((3*box_width - scroller_width)/2)+ (scrollbar_width/2)), -(((2*box_width)-scroller_width)+scrollbar_width)]; |
| |
| // This formats dict as a string suitable as test name. |
| // format_value() is provided by testharness.js, |
| // which also preserves sign for -0. |
| function format_dict(dict) { |
| const props = []; |
| for (let prop in dict) { |
| props.push(`${prop}: ${format_value(dict[prop])}`); |
| } |
| return `{${props.join(", ")}}`; |
| } |
| |
| [ |
| [{block: "start", inline: "start"}, expectedX[0], expectedY[0]], |
| [{block: "start", inline: "center"}, expectedX[0], expectedY[1]], |
| [{block: "start", inline: "end"}, expectedX[0], expectedY[2]], |
| [{block: "center", inline: "start"}, expectedX[1], expectedY[0]], |
| [{block: "center", inline: "center"}, expectedX[1], expectedY[1]], |
| [{block: "center", inline: "end"}, expectedX[1], expectedY[2]], |
| [{block: "end", inline: "start"}, expectedX[2], expectedY[0]], |
| [{block: "end", inline: "center"}, expectedX[2], expectedY[1]], |
| [{block: "end", inline: "end"}, expectedX[2], expectedY[2]], |
| ].forEach(([input, expectedX, expectedY]) => { |
| test(() => { |
| scroller.scrollTo(0, 0); |
| target.scrollIntoView(input); |
| assert_approx_equals(scroller.scrollLeft, expectedX, 0.5, "scrollX"); |
| assert_approx_equals(scroller.scrollTop, expectedY, 0.5, "scrollY"); |
| }, `scrollIntoView(${format_dict(input)})`); |
| }) |
| |
| </script> |
| |
| </body> |
| </html> |
