[LayoutNG] Give flex items their stretched size earlier.

davidsgrogan · chromium-wpt-export-bot · commit 0702f3fe6d81 · 2019-08-21T22:07:12.000-04:00
Force the cross size on stretchy items when they are laid out for flex base sizing or cross size determination. Bug: 845235 Change-Id: I49c6b9a9ef1d2e86aa02c47841075ed2726d5619 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1762816 Commit-Queue: David Grogan <dgrogan@chromium.org> Reviewed-by: Christian Biesinger <cbiesinger@chromium.org> Cr-Commit-Position: refs/heads/master@{#689303}
diff --git a/css/css-flexbox/flexbox_align-items-stretch-3.html b/css/css-flexbox/flexbox_align-items-stretch-3.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<title>flex base size and stretched items</title>
+<link rel="author" title="David Grogan" href="mailto:dgrogan@chromium.org">
+<link rel="help" href="https://drafts.csswg.org/css-flexbox/#definite-sizes" title="bullet #1">
+<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
+<meta name="flags" content="" />
+<meta name="assert" content="Item's stretched size is used for laying out descendants when determining flex base size." />
+<style>
+x-flexbox {
+  display: flex;
+  height: 100px;
+}
+
+x-item {
+  background: green;
+  writing-mode: vertical-lr;
+}
+
+x-item > div {
+  padding-right: 70%;
+  width: 30px;
+}
+</style>
+
+<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
+
+<x-flexbox>
+  <x-item>
+    <div></div>
+  </x-item>
+</x-flexbox>
