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| 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. |
| 10 |
| 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 <html> |
| 16 <head> |
| 17 <style> |
| 18 body { font: 10px sans-serif } |
| 19 .flexContainer { |
| 20 background: orange; |
| 21 display: flex; |
| 22 justify-content: space-between; |
| 23 width: 70px; |
| 24 padding: 2px; |
| 25 margin-bottom: 2px; |
| 26 } |
| 27 .item1 { |
| 28 background: lightblue; |
| 29 width: 30px; |
| 30 } |
| 31 .item2 { |
| 32 background: yellow; |
| 33 width: 30px; |
| 34 } |
| 35 </style> |
| 36 </head> |
| 37 <body> |
| 38 <!-- This container has two flex items, the first of which has content |
| 39 sticking out & overlapping the second. If they're painting atomically |
| 40 (and in the right order), the second item's background should cover the |
| 41 first item's overflowing content. --> |
| 42 <div class="flexContainer" |
| 43 ><div class="item1">ThisIsALongUnbrokenString</div |
| 44 ><div class="item2">HereIsSomeMoreLongText</div |
| 45 ></div> |
| 46 |
| 47 <!-- Now, the first item is relatively positioned, which should make it paint |
| 48 on top of everything. --> |
| 49 <div class="flexContainer" |
| 50 ><div class="item1" style="position:relative">ThisIsALongUnbrokenString</div |
| 51 ><div class="item2">HereIsSomeMoreLongText</div |
| 52 ></div> |
| 53 |
| 54 <!-- Now, the first item is has "z-index" set, which should make it paint on |
| 55 top of everything. --> |
| 56 <div class="flexContainer" |
| 57 ><div class="item1" style="z-index: 1">ThisIsALongUnbrokenString</div |
| 58 ><div class="item2">HereIsSomeMoreLongText</div |
| 59 ></div> |
| 60 |
| 61 <!-- Now, the first item has "order" set to a higher value than default, |
| 62 which should make it paint on top (and at the far right) --> |
| 63 <div class="flexContainer" |
| 64 ><div class="item1" style="order: 1">ThisIsALongUnbrokenString</div |
| 65 ><div class="item2">HereIsSomeMoreLongText</div |
| 66 ></div> |
| 67 |
| 68 <!-- And for thoroughness, let's set "order" to a lower value than default, |
| 69 on the second item. (Should render the same as previous example.) --> |
| 70 <div class="flexContainer" |
| 71 ><div class="item1">ThisIsALongUnbrokenString</div |
| 72 ><div class="item2" style="order: -1">HereIsSomeMoreLongText</div |
| 73 ></div> |
| 74 |
| 75 <!-- ...but if we relatively position that second item, it should paint |
| 76 on top again, despite its low "order" value. --> |
| 77 <div class="flexContainer" |
| 78 ><div class="item1">ThisIsALongUnbrokenString</div |
| 79 ><div class="item2" style="order: -1; position: relative">HereIsSomeMoreLong
Text</div |
| 80 ></div> |
| 81 </body> |
| 82 </html> |
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Chromium Code Reviews
Issue 23737004:
Paint flex items atomically, like inline-blocks (Closed)
Base URL: svn://svn.chromium.org/blink/trunk