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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 --><html><head> |
| 6 <meta charset="utf-8"> |
| 7 <title>CSS Test: Testing min-height:auto</title> |
| 8 <link href="mailto:dholbert@mozilla.com" rel="author" title="Daniel Holbert"
> |
| 9 <link href="http://www.w3.org/TR/css-flexbox-1/#min-size-auto" rel="help"> |
| 10 <link href="reference/flexbox-min-height-auto-002-ref.htm" rel="match"> |
| 11 <!-- |
| 12 This testcase tests the used value of "min-height:auto" (the property's |
| 13 initial value) on flex items in a vertical flex container. |
| 14 |
| 15 It's supposed to resolve to the smallest of: |
| 16 a) The used 'flex-basis' (taken from 'height'), if 'flex-basis' is at its |
| 17 initial value. |
| 18 b) The computed 'max-height' property |
| 19 c) If there's no intrinsic aspect ratio: the item's min-content height. |
| 20 d) If there is an intrinsic aspect ratio: the item's height derived from |
| 21 the ratio & constraints in the other dimension. |
| 22 |
| 23 We measure what the used value is by putting flex items in a small flex |
| 24 container, which will shrink its items down to their min-height. |
| 25 |
| 26 This test checks for situations where we should resolve the min-height as |
| 27 (d) above, with "constraints in the other dimension" being "width". |
| 28 --> |
| 29 <style> |
| 30 .flexbox { |
| 31 display: flex; |
| 32 flex-direction: column; |
| 33 height: 1px; /* No available space; shrink flex items to min-height */ |
| 34 margin-right: 2px; /* (Just for spacing things out, visually) */ |
| 35 float: left; |
| 36 } |
| 37 |
| 38 .flexbox > * { |
| 39 /* Flex items have purple border: */ |
| 40 border: 2px dotted purple; |
| 41 /* Flex items have sizing constraint in cross axis: */ |
| 42 width: 30px; |
| 43 } |
| 44 </style> |
| 45 </head> |
| 46 <body> |
| 47 <!-- Check for min-height:auto resolving correctly when the smallest |
| 48 candidate value is: --> |
| 49 |
| 50 <!-- *** (d) (with intrinsic aspect ratio) The height derived from ratio |
| 51 and constraints in the other dimension *** --> |
| 52 <!-- First, with a larger candidate 'flex-basis' value (from 'height') --> |
| 53 <div class="flexbox"> |
| 54 <img src="support/solidblue.png" alt="blue square" style="height: 100px"> |
| 55 </div> |
| 56 <!-- ...and now with a larger explicit 'flex-basis' value (which shouldn't |
| 57 be considered for 'min-height:auto' anyway) --> |
| 58 <div class="flexbox"> |
| 59 <img src="support/solidblue.png" alt="blue square" style="flex-basis: 100p
x"> |
| 60 </div> |
| 61 <!-- ...and now with a smaller explicit 'flex-basis' value (which shouldn't |
| 62 be considered for 'min-height:auto' anyway) --> |
| 63 <div class="flexbox"> |
| 64 <img src="support/solidblue.png" alt="blue square" style="flex-basis: 10px
"> |
| 65 </div> |
| 66 |
| 67 |
| 68 </body></html> |
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