ContentVisibility: Add positioned children tests.

This patch modifies one test to ensure that positioned elements are properly hidden, and adds a new one that ensures that positioned elements start painting properly when unhidden. R=chrishtr@chromium.org Fixed: 1090373 Change-Id: I7801f429de5c6752f681461b692a9f044fbf3ec0 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2227112 Commit-Queue: vmpstr <vmpstr@chromium.org> Commit-Queue: Chris Harrelson <chrishtr@chromium.org> Reviewed-by: Chris Harrelson <chrishtr@chromium.org> Cr-Commit-Position: refs/heads/master@{#774320}

ContentVisibility: Add positioned children tests.
This patch modifies one test to ensure that positioned elements are properly hidden, and adds a new one that ensures that positioned elements start painting properly when unhidden. R=chrishtr@chromium.org Fixed: 1090373 Change-Id: I7801f429de5c6752f681461b692a9f044fbf3ec0 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2227112 Commit-Queue: vmpstr <vmpstr@chromium.org> Commit-Queue: Chris Harrelson <chrishtr@chromium.org> Reviewed-by: Chris Harrelson <chrishtr@chromium.org> Cr-Commit-Position: refs/heads/master@{#774320}
d44a7af3 · Vladimir Levin · Commit Bot · b0ef5246 · d44a7af3 · d44a7af3
Commit d44a7af3 authored Jun 02, 2020 by Vladimir Levin Committed by Commit Bot Jun 02, 2020
3 changed files
--- a/third_party/blink/web_tests/wpt_internal/display-lock/css-content-visibility/container-with-pos-children-ref.html
+++ b/third_party/blink/web_tests/wpt_internal/display-lock/css-content-visibility/container-with-pos-children-ref.html
+<!doctype HTML>
+<html>
+<meta charset="utf8">
+<title>CSS Content Visibility: container with child and text (reference)</title>
+<link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org">
+<link rel="help" href="https://github.com/WICG/display-locking">
+
+<style>
+#container {
+  width: 150px;
+  height: 150px;
+  background: lightblue;
+  contain: layout;
+}
+#child {
+  width: 50px;
+  height: 50px;
+  background: lightgreen;
+}
+.abspos { position: absolute; }
+.relpos { position: relative; }
+.fixedpos { position: fixed; }
+.start { top: 0; left: 0; }
+.mid { top: 10px; left: 10px; }
+.end { bottom: 0; right: 0; }
+.zindex { z-index: 1; }
+.small { width: 10px; height: 10px; background: blue; }
+.medium { width: 20px; height: 20px; background: green; }
+.large { width: 30px; height: 30px; background: pink; }
+</style>
+
+<div id=container>
+  Text.
+  <div id=child></div>
+  <span>inline child</span>
+  <div class="abspos start small"></div>
+  <div class="relpos mid medium"></div>
+  <div class="fixedpos end large"></div>
+  <div class=relpos>
+    <div class="abspos mid small zindex"></div>
+  </div>
+</div>
+
--- a/third_party/blink/web_tests/wpt_internal/display-lock/css-content-visibility/content-visibility-001.html
+++ b/third_party/blink/web_tests/wpt_internal/display-lock/css-content-visibility/content-visibility-001.html
@@ -19,11 +19,27 @@
  height: 50px;
  background: lightgreen;
 }
+.abspos { position: absolute; }
+.relpos { position: relative; }
+.fixedpos { position: fixed; }
+.start { top: 0; left: 0; }
+.mid { top: 10px; left: 10px; }
+.end { bottom: 0; right: 0; }
+.zindex { z-index: 1; }
+.small { width: 10px; height: 10px; background: blue; }
+.medium { width: 20px; height: 20px; background: green; }
+.large { width: 30px; height: 30px; background: pink; }
 </style>

 <div id=container>
  Text.
  <div id=child></div>
  <span>inline child</span>
+  <div class="abspos start small"></div>
+  <div class="relpos mid medium"></div>
+  <div class="fixedpos end large"></div>
+  <div class=relpos>
+    <div class="abspos mid small zindex"></div>
+  </div>
 </div>
 </html>
--- a/third_party/blink/web_tests/wpt_internal/display-lock/css-content-visibility/content-visibility-075.html
+++ b/third_party/blink/web_tests/wpt_internal/display-lock/css-content-visibility/content-visibility-075.html
+<!doctype HTML>
+<html class="reftest-wait">
+<meta charset="utf8">
+<title>CSS Content Visibility: hidden starts painting when removed</title>
+<link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org">
+<link rel="help" href="https://github.com/WICG/display-locking">
+<link rel="match" href="container-with-pos-children-ref.html">
+<meta name="assert" content="content-visibility subtrees start painting when hidden is removed">
+
+<script src="/common/reftest-wait.js"></script>
+
+<style>
+#container {
+  width: 150px;
+  height: 150px;
+  background: lightblue;
+  contain: layout;
+}
+.hidden {
+  content-visibility: hidden;
+}
+#child {
+  width: 50px;
+  height: 50px;
+  background: lightgreen;
+}
+.abspos { position: absolute; }
+.relpos { position: relative; }
+.fixedpos { position: fixed; }
+.start { top: 0; left: 0; }
+.mid { top: 10px; left: 10px; }
+.end { bottom: 0; right: 0; }
+.zindex { z-index: 1; }
+.small { width: 10px; height: 10px; background: blue; }
+.medium { width: 20px; height: 20px; background: green; }
+.large { width: 30px; height: 30px; background: pink; }
+</style>
+
+<div id=container class=hidden>
+  Text.
+  <div id=child></div>
+  <span>inline child</span>
+  <div class="abspos start small"></div>
+  <div class="relpos mid medium"></div>
+  <div class="fixedpos end large"></div>
+  <div class=relpos>
+    <div class="abspos mid small zindex"></div>
+  </div>
+</div>
+
+<script>
+function runTest() {
+  const container = document.getElementById("container");
+  container.classList.remove("hidden");
+  requestAnimationFrame(takeScreenshot);
+}
+
+window.onload = runTest;
+</script>
+</html>