layout/reftests/w3c-css/submitted/flexbox/flexbox-items-as-stacking-contexts-2.html@925c144e1f1f
layout/reftests/w3c-css/submitted/flexbox/flexbox-items-as-stacking-contexts-2.html
Fri, 16 Jan 2015 18:13:44 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Fri, 16 Jan 2015 18:13:44 +0100
- branch
- TOR_BUG_9701
- changeset 14
- 925c144e1f1f
- permissions
- -rw-r--r--
Integrate suggestion from review to improve consistency with existing code.
1 <!DOCTYPE html>
2 <!--
3 Any copyright is dedicated to the Public Domain.
4 http://creativecommons.org/publicdomain/zero/1.0/
5 -->
6 <!-- This testcase checks flex items are painted atomically. In particular,
7 if one item has content that overflows into the region of another item,
8 then one item is painted "behind" the other; there shouldn't normally
9 any interleaving of backgrounds and content between the two items.
11 This testcase also tests some special cases that will change the paint
12 ordering - specifically, the properties "position", "z-index", and
13 "order" on flex items.
14 -->
15 <!-- This was resolved by the CSSWG in April 2013:
16 http://krijnhoetmer.nl/irc-logs/css/20130403#l-455 -->
17 <html>
18 <head>
19 <title>CSS Test: Testing that flex items paint as pseudo-stacking contexts (like inline-blocks): atomically, in the absence of 'z-index' on descendants</title>
20 <link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com">
21 <link rel="help" href="http://www.w3.org/TR/css3-flexbox/#painting">
22 <link rel="match" href="flexbox-items-as-stacking-contexts-2-ref.html">
23 <style>
24 body { font: 10px sans-serif }
25 .flexContainer {
26 background: orange;
27 display: flex;
28 justify-content: space-between;
29 width: 70px;
30 padding: 2px;
31 margin-bottom: 2px;
32 }
33 .item1 {
34 background: lightblue;
35 width: 30px;
36 }
37 .item2 {
38 background: yellow;
39 width: 30px;
40 }
41 </style>
42 </head>
43 <body>
44 <!-- This container has two flex items, the first of which has content
45 sticking out & overlapping the second. If they're painting atomically
46 (and in the right order), the second item's background should cover the
47 first item's overflowing content. -->
48 <div class="flexContainer"
49 ><div class="item1">ThisIsALongUnbrokenString</div
50 ><div class="item2">HereIsSomeMoreLongText</div
51 ></div>
53 <!-- Now, the first item is relatively positioned, which should make it paint
54 on top of everything. -->
55 <div class="flexContainer"
56 ><div class="item1" style="position:relative">ThisIsALongUnbrokenString</div
57 ><div class="item2">HereIsSomeMoreLongText</div
58 ></div>
60 <!-- Now, the first item is has "z-index" set, which should make it paint on
61 top of everything. -->
62 <div class="flexContainer"
63 ><div class="item1" style="z-index: 1">ThisIsALongUnbrokenString</div
64 ><div class="item2">HereIsSomeMoreLongText</div
65 ></div>
67 <!-- Now, the first item has "order" set to a higher value than default,
68 which should make it paint on top (and at the far right) -->
69 <div class="flexContainer"
70 ><div class="item1" style="order: 1">ThisIsALongUnbrokenString</div
71 ><div class="item2">HereIsSomeMoreLongText</div
72 ></div>
74 <!-- And for thoroughness, let's set "order" to a lower value than default,
75 on the second item. (Should render the same as previous example.) -->
76 <div class="flexContainer"
77 ><div class="item1">ThisIsALongUnbrokenString</div
78 ><div class="item2" style="order: -1">HereIsSomeMoreLongText</div
79 ></div>
81 <!-- ...but if we relatively position that second item, it should paint
82 on top again, despite its low "order" value. -->
83 <div class="flexContainer"
84 ><div class="item1">ThisIsALongUnbrokenString</div
85 ><div class="item2" style="order: -1; position: relative">HereIsSomeMoreLongText</div
86 ></div>
87 </body>
88 </html>
