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Diffstat (limited to 'testing/web-platform/tests/css/css-scroll-snap/snap-after-relayout/multiple-aligned-targets/prefer-common-to-both-axes.html')
-rw-r--r-- | testing/web-platform/tests/css/css-scroll-snap/snap-after-relayout/multiple-aligned-targets/prefer-common-to-both-axes.html | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/testing/web-platform/tests/css/css-scroll-snap/snap-after-relayout/multiple-aligned-targets/prefer-common-to-both-axes.html b/testing/web-platform/tests/css/css-scroll-snap/snap-after-relayout/multiple-aligned-targets/prefer-common-to-both-axes.html new file mode 100644 index 0000000000..09b81e7c0d --- /dev/null +++ b/testing/web-platform/tests/css/css-scroll-snap/snap-after-relayout/multiple-aligned-targets/prefer-common-to-both-axes.html @@ -0,0 +1,151 @@ +<!DOCTYPE html> +<html> + <head> + <link rel="help" href="https://drafts.csswg.org/css-scroll-snap"/> + <script src="/resources/testharness.js"></script> + <script src="/resources/testharnessreport.js"></script> + <script src="/dom/events/scrolling/scroll_support.js"></script> + <script src="/resources/testdriver.js"></script> + <script src="/resources/testdriver-actions.js"></script> + <script src="/resources/testdriver-vendor.js"></script> + <script src="resources/common.js" ></script> + </head> + <body> + <style> + .scroller { + overflow: scroll; + width: 350px; + height: 350px; + border: solid 1px black; + scroll-snap-type: both mandatory; + position: relative; + resize: both; + } + .large-space { + height: 300vh; + width: 300vw; + position: absolute; + } + .snap { + scroll-snap-align: start; + } + .box { + width: 100px; + height: 100px; + background-color: green; + display: inline-block; + position: relative; + } + .grid { + position: absolute; + width: 350px; + height: 350px; + } + .snap:focus { + background-color: blue; + } + </style> + <div class="scroller" id="scroller"> + <div class="large-space"><div> + <div class="grid" id="grid"> + <div id="box1" tabindex="1" class="snap box">Box 1</div> + <div id="box2" tabindex="1" class="snap box">Box 2</div> + <div id="box3" tabindex="1" class="snap box">Box 3</div> + <div id="box4" tabindex="1" class="snap box">Box 4</div> + <div id="box5" tabindex="1" class="snap box">Box 5</div> + <div id="box6" tabindex="1" class="snap box">Box 6</div> + <div id="box7" tabindex="1" class="snap box">Box 7</div> + <div id="box8" tabindex="1" class="snap box">Box 8</div> + <div id="box9" tabindex="1" class="snap box">Box 9</div> + </div> + </div> + <script> + window.onload = () => { + // This test sets up a 3x3 grid within scroller: + // ------------------------- + // | Box 1 | Box 2 | Box 3 | + // ------------------------ + // | Box 4 | Box 5 | Box 6 | + // ------------------------- + // | Box 7 | Box 8 | Box 9 | + // ------------------------- + const scroller = document.getElementById("scroller"); + const boxes = document.querySelectorAll(".snap.box"); + function box(n) { + return boxes[n - 1]; + } + + promise_test(async (t) => { + await waitForCompositorCommit(); + + await runScrollSnapSelectionVerificationTest(t, scroller, + /*aligned_elements_x=*/[], + /*aligned_elements_y=*/[box(1), box(2), box(3)], + /*axis=*/ "y", + /*expected_target_x=*/null, + /*expected_target_y=*/box(1)); + + await runScrollSnapSelectionVerificationTest(t, scroller, + /*aligned_elements_x=*/[], + /*aligned_elements_y=*/[box(4), box(5), box(6)], + /*axis=*/ "y", + /*expected_target_x=*/null, + /*expected_target_y=*/box(4)); + + await runScrollSnapSelectionVerificationTest(t, scroller, + /*aligned_elements_x=*/[], + /*aligned_elements_y=*/[box(7), box(8), box(9)], + /*axis=*/"y", + /*expected_target_x=*/null, + /*expected_target_y=*/box(7)); + + await runScrollSnapSelectionVerificationTest(t, scroller, + /*aligned_elements_x=*/[box(1), box(4), box(7)], + /*aligned_elements_y=*/[], + /*axis=*/"x", + /*expected_target_x=*/box(1)); + + await runScrollSnapSelectionVerificationTest(t, scroller, + /*aligned_elements_x=*/[box(2), box(5), box(8)], + /*aligned_elements_y=*/[], + /*axis=*/"x", + /*expected_target_x=*/box(2)); + + await runScrollSnapSelectionVerificationTest(t, scroller, + /*aligned_elements_x=*/[box(3), box(6), box(9)], + /*aligned_elements_y=*/[], + /*axis=*/"x", + /*expected_target_x=*/box(3)); + + await runScrollSnapSelectionVerificationTest(t, scroller, + /*aligned_elements_x=*/[box(2), box(5), box(8)], + /*aligned_elements_y=*/[box(4), box(5), box(6)], + /*axis=*/"both", + /*expected_target_x=*/box(5), + /*expected_target_y=*/box(5)); + }, "scroller prefers target aligned in both axes."); + + promise_test(async (t) => { + const box7 = box(7), box8 = box(8), box9 = box(9); + const initial_box8_top = box8.offsetTop; + t.add_cleanup(() => { + box8.style.top = `${initial_box8_top}px`; + }); + + // Move box 8 below box7 and box9. + box8.style.top = `${2 * box8.offsetTop}px`; + + // Snap to box8. + scroller.scrollTop = box8.offsetTop; + + // Test that if box7 and box9 are also shifted to align with box7, + // box8 is still treated as the selected snap target despite box7 being + // aligned on both axes. + runLayoutSnapSeletionVerificationTest(t, scroller, [box7, box9], + box8, "y"); + }, "scroller follows selected snap target after layout shift, " + + "regardless of common snap area."); + } + </script> + </body> +</html> |