| <!DOCTYPE html> |
| <title>@container: scroll-state(snapped) matching for writing-mode</title> |
| <link rel="help" href="https://drafts.csswg.org/css-conditional-5/#container-rule"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/css/css-conditional/container-queries/support/cq-testcommon.js"></script> |
| <script src="/css/css-transitions/support/helper.js"></script> |
| <style> |
| :root { |
| scroll-snap-type: block mandatory; |
| } |
| body { |
| margin: 0; |
| } |
| #filler-before { |
| height: 200px; |
| } |
| #filler-after { |
| height: 10000px; |
| } |
| #snapped { |
| writing-mode: vertical-lr; |
| container-name: initially-snapped; |
| container-type: scroll-state; |
| scroll-snap-align: start; |
| width: 100px; |
| height: 100px; |
| background: teal; |
| } |
| |
| @container initially-snapped scroll-state(snapped: block) { |
| span { --snapped-logical: block } |
| } |
| @container initially-snapped scroll-state(snapped: inline) { |
| span { --snapped-logical: inline } |
| } |
| @container initially-snapped scroll-state(snapped: x) { |
| span { --snapped-physical: x } |
| } |
| @container initially-snapped scroll-state(snapped: y) { |
| span { --snapped-physical: y } |
| } |
| </style> |
| <div id="filler-before"></div> |
| <div id="snapped"> |
| <span id="target">My container is snapped</span> |
| </div> |
| <div id="filler-after"></div> |
| <script> |
| setup(() => assert_implements_scroll_state_container_queries()); |
| |
| promise_test(async t => { |
| await waitForAnimationFrames(2); |
| assert_equals(getComputedStyle(target).getPropertyValue("--snapped-logical"), "inline"); |
| assert_equals(getComputedStyle(target).getPropertyValue("--snapped-physical"), "y"); |
| assert_equals(document.documentElement.scrollTop, 200); |
| }, "Check scroll-state(snapped) matching for vertical writing-mode"); |
| |
| promise_test(async t => { |
| snapped.style.writingMode = "horizontal-tb"; |
| await waitForAnimationFrames(2); |
| assert_equals(getComputedStyle(target).getPropertyValue("--snapped-logical"), "block"); |
| assert_equals(getComputedStyle(target).getPropertyValue("--snapped-physical"), "y"); |
| assert_equals(document.documentElement.scrollTop, 200); |
| }, "Check scroll-state(snapped) matching dynamically changing to horizontal writing-mode"); |
| |
| </script> |
