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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 <html> |
| 7 <head> |
| 8 <meta charset="utf-8"> |
| 9 <title>CSS Test: Testing min-height:auto</title> |
| 10 <link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com"
> |
| 11 <link rel="help" href="http://www.w3.org/TR/css-flexbox-1/#min-size-auto"> |
| 12 <link rel="match" href="flexbox-min-height-auto-001-ref.html"> |
| 13 <!-- |
| 14 This testcase tests the used value of "min-height:auto" (the property's |
| 15 initial value) on flex items in a vertical flex container. |
| 16 |
| 17 It's supposed to resolve to the smallest of: |
| 18 a) The used 'flex-basis' (taken from 'height'), if 'flex-basis' is at its |
| 19 initial value. |
| 20 b) The computed 'max-height' property |
| 21 c) If there's no intrinsic aspect ratio: the item's min-content height. |
| 22 d) If there is an intrinsic aspect ratio: the item's height derived from |
| 23 the ratio & constraints in the other dimension. |
| 24 |
| 25 We measure what the used value is by putting flex items in a small flex |
| 26 container, which will shrink its items down to their min-height. |
| 27 |
| 28 This test checks for situations where we should resolve the min-height as |
| 29 (a), (b), or (c) above. Another test will check (d). |
| 30 --> |
| 31 <style> |
| 32 .flexbox { |
| 33 display: flex; |
| 34 flex-direction: column; |
| 35 height: 1px; /* No available space; shrink flex items to min-height */ |
| 36 margin-right: 2px; /* (Just for spacing things out, visually) */ |
| 37 float: left; |
| 38 } |
| 39 |
| 40 .flexbox > * { |
| 41 /* Flex items have purple border: */ |
| 42 border: 2px dotted purple; |
| 43 } |
| 44 |
| 45 .flexbox > * > * { |
| 46 /* Flex items' contents are gray & fixed-size: */ |
| 47 background: gray; |
| 48 width: 10px; |
| 49 height: 80px; |
| 50 } |
| 51 </style> |
| 52 </head> |
| 53 <body> |
| 54 <!-- Check for min-height:auto resolving correctly when the smallest |
| 55 candidate value is: --> |
| 56 <!-- *** (a) Used 'flex-basis' (from 'height') *** --> |
| 57 <!-- First, without definite max-height: --> |
| 58 <div class="flexbox"> |
| 59 <div style="height: 50px"><div></div></div> |
| 60 </div> |
| 61 <!-- ...and now with definite (& large) 'max-height': --> |
| 62 <div class="flexbox"> |
| 63 <div style="height: 50px; max-height: 120px;"><div></div></div> |
| 64 </div> |
| 65 <!-- ...and now with used 'flex-basis' being a calc expression: --> |
| 66 <div class="flexbox"> |
| 67 <div style="height: calc(10% + 50px)"><div></div></div> |
| 68 </div> |
| 69 |
| 70 <!-- *** (b) The computed 'max-height' *** --> |
| 71 <!-- First, with a larger candidate 'flex-basis' value (from 'height') --> |
| 72 <div class="flexbox"> |
| 73 <div style="height: 100px; max-height:50px"><div></div></div> |
| 74 </div> |
| 75 <!-- ...and now with a larger explicit 'flex-basis' value (which shouldn't |
| 76 be considered for 'min-height:auto' anyway) --> |
| 77 <div class="flexbox"> |
| 78 <div style="flex-basis: 100px; max-height:50px"><div></div></div> |
| 79 </div> |
| 80 <!-- ...and now with a smaller explicit 'flex-basis' value (which shouldn't |
| 81 be considered for 'min-height:auto' anyway) --> |
| 82 <div class="flexbox"> |
| 83 <div style="flex-basis: 10px; max-height:50px"><div></div></div> |
| 84 </div> |
| 85 |
| 86 <!-- *** (c) (no intrinsic aspect ratio) The min-content size *** --> |
| 87 <!-- First, with a larger candidate 'flex-basis' value (from 'height') --> |
| 88 <div class="flexbox"> |
| 89 <div style="height: 100px"><div></div></div> |
| 90 </div> |
| 91 <!-- ...and now with a larger explicit 'flex-basis' value (which shouldn't |
| 92 be considered for 'min-height:auto' anyway) --> |
| 93 <div class="flexbox"> |
| 94 <div style="flex-basis: 100px"><div></div></div> |
| 95 </div> |
| 96 <!-- ...and now with a smaller explicit 'flex-basis' value (which shouldn't |
| 97 be considered for 'min-height:auto' anyway) --> |
| 98 <div class="flexbox"> |
| 99 <div style="flex-basis: 10px"><div></div></div> |
| 100 </div> |
| 101 </body> |
| 102 </html> |
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Chromium Code Reviews
Issue 1705363002:
Import Mozilla's flexbox tests from csswg-test (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master