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26 December 2018, 22:31:15 UTC
Revision 1b5ce4ad3817e7b7247d7ff0f76b81877fce0d89 authored by Andrew Comminos on 21 December 2018, 21:45:26 UTC, committed by Chromium WPT Sync on 21 December 2018, 21:45:26 UTC 
Perform flexbox child hit testing by testing all children atomically
 
When two child elements of a flexbox overlap (for example, due to
negative margins), the element drawn in the foreground may not actually
capture the hit if the element underneath it is hit-tested in an earlier
phase (e.g. foreground before child block background), despite being
occluded. This is because painting of flexbox children is done
atomically (all phases at once). This change makes hit testing atomic as
well, in accordance with the spec [1].

[1] https://www.w3.org/TR/css-flexbox-1/#painting

Bug: 844505
Change-Id: Iceab80b42f19488dcb59565ea3c0ce40d48c483b
1 parent f3cbe03
Raw File
Tip revision: 1b5ce4ad3817e7b7247d7ff0f76b81877fce0d89 authored by Andrew Comminos on 21 December 2018, 21:45:26 UTC
Perform flexbox child hit testing by testing all children atomically
Tip revision: 1b5ce4a
interfaces.html 
<!DOCTYPE html>
<meta charset=utf-8>
<title>Entries API: IDL Tests</title>
<link rel=help href="https://wicg.github.io/entries-api/#idl-index">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/WebIDLParser.js"></script>
<script src="/resources/idlharness.js"></script>
<script>
'use strict';

promise_test(t => {
  return fetch('/interfaces/entries-api.idl')
    .then(r => r.text())
    .then(idls => {

      const idl_array = new IdlArray();

      // https://w3c.github.io/FileAPI/#dfn-file
      idl_array.add_untested_idls('[Exposed=(Window,Worker)] interface File {};');

      // https://html.spec.whatwg.org/multipage/forms.html#htmlinputelement
      idl_array.add_untested_idls('interface HTMLInputElement {};');

      // https://html.spec.whatwg.org/multipage/interaction.html#datatransferitem
      idl_array.add_untested_idls('interface DataTransferItem {};');

      idl_array.add_idls(idls);

      idl_array.add_objects({
        File: ['new File([], "example.txt")'],
        HTMLInputElement: ['document.createElement("input")'],
      });

      idl_array.test();
    });

}, 'Entries API: IDL');
</script>
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