third_party/WebKit/LayoutTests/fragmentation/become-fragmented-same-widths.html - Issue 2462643002: Be more restrictive about forcing relayout of children for pagination.

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Issue 2462643002: Be more restrictive about forcing relayout of children for pagination. (Closed)

Patch Set: No need to call updateFragmentationInfoForChild() when not paginated. Created 4 years, 1 month ago

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	1 <!DOCTYPE HTML>

	2 <!-- A block with fixed width is 220px tall. When turning its container into a

	3 multicol container with a column height of 300px, we need to re-lay out the

	4 block, even if it would seem to fit in one column (220px < 300px). It

	5 contains a forced break. -->

	6 <p>There should be a blue square below.</p>

	7 <div id="multicol" style="position:relative; column-gap:0; column-fill:auto; wid th:100px; height:300px;">

	8 <div style="width:50px;">

	9 <div id="block1" style="height:100px; background:blue;"></div>

	10 <div style="height:20px;"></div>

	11 <div id="block2" style="break-before:column; height:100px; background:bl ue;"></div>

	12 </div>

	13 </div>

	14 <script src="../resources/testharness.js"></script>

	15 <script src="../resources/testharnessreport.js"></script>

	16 <script>

	17 test(() => {

	18 document.body.offsetTop;

	19 document.getElementById("multicol").style.columns = "2";

	20 var block1 = document.getElementById("block1");

	21 var block2 = document.getElementById("block2");

	22 assert_equals(block1.offsetTop, 0);

	23 assert_equals(block1.offsetLeft, 0);

	24 assert_equals(block2.offsetTop, 0);

	25 assert_equals(block2.offsetLeft, 50);

	26 }, "Need relayout when becoming fragmented, even if width is the same.");

	27 </script>

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