| <!DOCTYPE html> |
| <title>CSS Anchor Positioning: inset-area positioning - alignment with writing-mode and direction</title> |
| <link rel="help" href="https://drafts.csswg.org/css-anchor-position/#inset-area"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| /* A 300x300 container with a 100x100 centered anchor */ |
| #container { |
| position: relative; |
| width: 300px; |
| height: 300px; |
| } |
| #anchor { |
| position: absolute; |
| top: 100px; |
| left: 100px; |
| width: 100px; |
| height: 100px; |
| anchor-name: --anchor; |
| } |
| #anchored { |
| position: absolute; |
| width: 10px; |
| height: 10px; |
| inset: 10px; |
| position-anchor: --anchor; |
| } |
| </style> |
| <div id="container"> |
| <div id="anchor"></div> |
| <div id="anchored"></div> |
| </div> |
| <script> |
| function test_inset_area(writing_direction, inset_area, expected_offsets) { |
| anchored.style.insetArea = inset_area; |
| test(() => { |
| assert_equals(anchored.offsetLeft, expected_offsets.left, "Checking offsetLeft"); |
| assert_equals(anchored.offsetTop, expected_offsets.top, "Checking offsetTop"); |
| assert_equals(anchored.offsetWidth, expected_offsets.width, "Checking offsetWidth"); |
| assert_equals(anchored.offsetHeight, expected_offsets.height, "Checking offsetHeight"); |
| }, "Offsets for: " + inset_area + " with writing-mode / direction: " + writing_direction); |
| } |
| |
| const top_left = {left:80, top:80, width:10, height:10}; |
| const top_right = {left:210, top:80, width:10, height:10}; |
| const bottom_left = {left:80, top:210, width:10, height:10}; |
| const bottom_right = {left:210, top:210, width:10, height:10}; |
| |
| anchored.style.writingMode = "horizontal-tb"; |
| anchored.style.direction = "ltr"; |
| |
| // Writing-mode and direction on container |
| let writing_direction = "containing-block: horizontal-tb / rtl"; |
| container.style.writingMode = "horizontal-tb"; |
| container.style.direction = "rtl"; |
| test_inset_area(writing_direction, "start start", top_right); |
| test_inset_area(writing_direction, "self-start self-start", top_left); |
| test_inset_area(writing_direction, "x-start y-start", top_right); |
| test_inset_area(writing_direction, "x-self-start y-self-start", top_left); |
| |
| // containing-block: vertical-lr / ltr |
| // self: horizontal-tb / ltr |
| writing_direction = "containing-block: vertical-lr / ltr"; |
| container.style.writingMode = "vertical-lr"; |
| container.style.direction = "ltr"; |
| test_inset_area(writing_direction, "start start", top_left); |
| test_inset_area(writing_direction, "self-start self-start", top_left); |
| test_inset_area(writing_direction, "x-start y-start", top_left); |
| test_inset_area(writing_direction, "x-self-start y-self-start", top_left); |
| |
| // containing-block: vertical-lr / rtl |
| // self: horizontal-tb / ltr |
| writing_direction = "containing-block: vertical-lr / rtl"; |
| container.style.writingMode = "vertical-lr"; |
| container.style.direction = "rtl"; |
| test_inset_area(writing_direction, "start start", bottom_left); |
| test_inset_area(writing_direction, "self-start self-start", top_left); |
| test_inset_area(writing_direction, "x-start y-start", bottom_left); |
| test_inset_area(writing_direction, "x-self-start y-self-start", top_left); |
| |
| // containing-block: vertical-rl / ltr |
| // self: horizontal-tb / ltr |
| writing_direction = "containing-block: vertical-rl / ltr"; |
| container.style.writingMode = "vertical-rl"; |
| container.style.direction = "ltr"; |
| test_inset_area(writing_direction, "start start", top_right); |
| test_inset_area(writing_direction, "self-start self-start", top_left); |
| test_inset_area(writing_direction, "x-start y-start", top_right); |
| test_inset_area(writing_direction, "x-self-start y-self-start", top_left); |
| |
| // containing-block: vertical-rl / rtl |
| // self: horizontal-tb / ltr |
| writing_direction = "containing-block: vertical-rl / rtl"; |
| container.style.writingMode = "vertical-rl"; |
| container.style.direction = "rtl"; |
| test_inset_area(writing_direction, "start start", bottom_right); |
| test_inset_area(writing_direction, "self-start self-start", top_left); |
| test_inset_area(writing_direction, "x-start y-start", bottom_right); |
| test_inset_area(writing_direction, "x-self-start y-self-start", top_left); |
| |
| // Writing-mode and direction on self |
| container.style.writingMode = "horizontal-tb"; |
| container.style.direction = "ltr"; |
| |
| // containing-block: horizontal-tb / ltr |
| // self: horizontal-tb / rtl |
| writing_direction = "self: horizontal-tb / rtl"; |
| anchored.style.writingMode = "horizontal-tb"; |
| anchored.style.direction = "rtl"; |
| test_inset_area(writing_direction, "start start", top_left); |
| test_inset_area(writing_direction, "self-start self-start", top_right); |
| test_inset_area(writing_direction, "x-start y-start", top_left); |
| test_inset_area(writing_direction, "x-self-start y-self-start", top_right); |
| |
| // containing-block: horizontal-tb / ltr |
| // self: vertical-lr / ltr |
| writing_direction = "self: vertical-lr / ltr"; |
| anchored.style.writingMode = "vertical-lr"; |
| anchored.style.direction = "ltr"; |
| test_inset_area(writing_direction, "start start", top_left); |
| test_inset_area(writing_direction, "self-start self-start", top_left); |
| test_inset_area(writing_direction, "x-start y-start", top_left); |
| test_inset_area(writing_direction, "x-self-start y-self-start", top_left); |
| |
| // containing-block: horizontal-tb / ltr |
| // self: vertical-lr / rtl |
| writing_direction = "self: vertical-lr / rtl"; |
| anchored.style.writingMode = "vertical-lr"; |
| anchored.style.direction = "rtl"; |
| test_inset_area(writing_direction, "start start", top_left); |
| test_inset_area(writing_direction, "self-start self-start", bottom_left); |
| test_inset_area(writing_direction, "x-start y-start", top_left); |
| test_inset_area(writing_direction, "x-self-start y-self-start", bottom_left); |
| |
| // containing-block: horizontal-tb / ltr |
| // self: vertical-rl / ltr |
| writing_direction = "self: vertical-rl / ltr"; |
| anchored.style.writingMode = "vertical-rl"; |
| anchored.style.direction = "ltr"; |
| test_inset_area(writing_direction, "start start", top_left); |
| test_inset_area(writing_direction, "self-start self-start", top_right); |
| test_inset_area(writing_direction, "x-start y-start", top_left); |
| test_inset_area(writing_direction, "x-self-start y-self-start", top_right); |
| |
| // containing-block: horizontal-tb / ltr |
| // self: vertical-rl / rtl |
| writing_direction = "self: vertical-rl / rtl"; |
| anchored.style.writingMode = "vertical-rl"; |
| anchored.style.direction = "rtl"; |
| test_inset_area(writing_direction, "start start", top_left); |
| test_inset_area(writing_direction, "self-start self-start", bottom_right); |
| test_inset_area(writing_direction, "x-start y-start", top_left); |
| test_inset_area(writing_direction, "x-self-start y-self-start", bottom_right); |
| |
| </script> |
