| <!DOCTYPE html> |
| <!-- |
| Any copyright is dedicated to the Public Domain. |
| http://creativecommons.org/publicdomain/zero/1.0/ |
| --> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <title>CSS Test: Testing min-height:auto</title> |
| <link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com"> |
| <link rel="help" href="http://www.w3.org/TR/css-flexbox-1/#min-size-auto"> |
| <link rel="match" href="flexbox-min-height-auto-001-ref.html"> |
| <!-- |
| This testcase tests the used value of "min-height:auto" (the property's |
| initial value) on flex items in a vertical flex container. |
| |
| It's supposed to resolve to the smallest of: |
| a) The used 'flex-basis' (taken from 'height'), if 'flex-basis' is at its |
| initial value. |
| b) The computed 'max-height' property |
| c) If there's no intrinsic aspect ratio: the item's min-content height. |
| d) If there is an intrinsic aspect ratio: the item's height derived from |
| the ratio & constraints in the other dimension. |
| |
| We measure what the used value is by putting flex items in a small flex |
| container, which will shrink its items down to their min-height. |
| |
| This test checks for situations where we should resolve the min-height as |
| (a), (b), or (c) above. Another test will check (d). |
| --> |
| <style> |
| .flexbox { |
| display: flex; |
| flex-direction: column; |
| height: 1px; /* No available space; shrink flex items to min-height */ |
| margin-right: 2px; /* (Just for spacing things out, visually) */ |
| float: left; |
| } |
| |
| .flexbox > * { |
| /* Flex items have purple border: */ |
| border: 2px dotted purple; |
| } |
| |
| .flexbox > * > * { |
| /* Flex items' contents are gray & fixed-size: */ |
| background: gray; |
| width: 10px; |
| height: 80px; |
| } |
| </style> |
| </head> |
| <body> |
| <!-- Check for min-height:auto resolving correctly when the smallest |
| candidate value is: --> |
| <!-- *** (a) Used 'flex-basis' (from 'height') *** --> |
| <!-- First, without definite max-height: --> |
| <div class="flexbox"> |
| <div style="height: 50px"><div></div></div> |
| </div> |
| <!-- ...and now with definite (& large) 'max-height': --> |
| <div class="flexbox"> |
| <div style="height: 50px; max-height: 120px;"><div></div></div> |
| </div> |
| <!-- ...and now with used 'flex-basis' being a calc expression:--> |
| <div class="flexbox"> |
| <div style="height: calc(10% + 50px)"><div></div></div> |
| </div> |
| |
| <!-- *** (b) The computed 'max-height' *** --> |
| <!-- First, with a larger candidate 'flex-basis' value (from 'height') --> |
| <div class="flexbox"> |
| <div style="height: 100px; max-height:50px"><div></div></div> |
| </div> |
| <!-- ...and now with a larger explicit 'flex-basis' value (which shouldn't |
| be considered for 'min-height:auto' anyway) --> |
| <div class="flexbox"> |
| <div style="flex-basis: 100px; max-height:50px"><div></div></div> |
| </div> |
| <!-- ...and now with a smaller explicit 'flex-basis' value (which shouldn't |
| be considered for 'min-height:auto' anyway) --> |
| <div class="flexbox"> |
| <div style="flex-basis: 10px; max-height:50px"><div></div></div> |
| </div> |
| |
| <!-- *** (c) (no intrinsic aspect ratio) The min-content size *** --> |
| <!-- First, with a larger candidate 'flex-basis' value (from 'height') --> |
| <div class="flexbox"> |
| <div style="height: 100px"><div></div></div> |
| </div> |
| <!-- ...and now with a larger explicit 'flex-basis' value (which shouldn't |
| be considered for 'min-height:auto' anyway) --> |
| <div class="flexbox"> |
| <div style="flex-basis: 100px"><div></div></div> |
| </div> |
| <!-- ...and now with a smaller explicit 'flex-basis' value (which shouldn't |
| be considered for 'min-height:auto' anyway) --> |
| <div class="flexbox"> |
| <div style="flex-basis: 10px"><div></div></div> |
| </div> |
| </body> |
| </html> |