flexbox-basic-canvas-vert-001v.xhtml (3566B)
1 <?xml version="1.0" encoding="UTF-8"?> 2 <!-- 3 Any copyright is dedicated to the Public Domain. 4 http://creativecommons.org/publicdomain/zero/1.0/ 5 --> 6 <!-- 7 This test checks that canvas elements behave correctly as flex items. 8 --> 9 <html xmlns="http://www.w3.org/1999/xhtml"> 10 <head> 11 <title> 12 CSS Test: Testing flexbox layout algorithm property on canvas flex items in a vertical flex container 13 (with a vertical writing-mode on the canvas flex items). 14 </title> 15 <link rel="author" title="Daniel Holbert" href="mailto:dholbert@mozilla.com"/> 16 <link rel="help" href="http://www.w3.org/TR/css-flexbox-1/#layout-algorithm"/> 17 <link rel="match" href="flexbox-basic-canvas-vert-001-ref.xhtml"/> 18 <style> 19 div.flexbox { 20 height: 200px; 21 background: lightgreen; 22 display: flex; 23 justify-content: space-between; 24 flex-direction: column; 25 float: left; 26 margin-right: 10px; 27 font: 8px monospace; 28 } 29 canvas { 30 width: 20px; 31 height: 10px; 32 min-height: 0; 33 border: 1px dotted green; 34 writing-mode: vertical-lr; 35 } 36 </style> 37 </head> 38 <body> 39 40 <!-- A) One flex item --> 41 <div class="flexbox"> 42 <canvas/> 43 </div> 44 45 <!-- B) Text and a canvas (ensure they aren't merged into one flex item) --> 46 <div class="flexbox"> 47 a b <canvas/> 48 </div> 49 50 <!-- C) Two canvas elements, getting stretched by different ratios, from 0. 51 52 Space-to-be-distributed = 200px - borders = 200 - (1 + 1) - (1 + 1) 53 = 196px 54 55 1st element gets 5/9 of space: 5/9 * 196px = 108.8px 56 1st element gets 4/9 of space: 4/9 * 196px = 87.1px 57 --> 58 <div class="flexbox"> 59 <canvas style="flex: 5"/> 60 <canvas style="flex: 4"/> 61 </div> 62 63 <!-- D) Two canvas elements, getting stretched by different ratios, from 64 different flex bases. 65 66 Space-to-be-distributed = 200px - (33 + 1 + 1) - (13 + 1 + 1) = 150px 67 1st element gets 2/5 of space: 33px + 2/5 * 150px = 93px 68 1st element gets 3/5 of space: 13px + 3/5 * 150px = 103px 69 --> 70 <div class="flexbox"> 71 <canvas style="height: 33px; flex: 2 auto"/> 72 <canvas style="height: 13px; flex: 3 auto"/> 73 </div> 74 75 <!-- E) Two flex items, getting shrunk by different amounts. 76 77 Space-to-be-distributed = 200px - (150 + 1 + 1) - (100 + 1 + 1) = -54px 78 First element scaled flex ratio = 4 * 150 = 600 79 Second element scaled flex ratio = 3 * 100 = 300 80 * So, total flexibility is 600 + 300 = 900 81 82 1st element gets 600/900 of space: 150 + 600/900 * -54 = 114px 83 2nd element gets 300/900 of space: 100 + 300/900 * -54 = 82px 84 --> 85 <div class="flexbox"> 86 <canvas style="height: 150px; flex: 1 4 auto"/> 87 <canvas style="height: 100px; flex: 1 3 auto"/> 88 </div> 89 90 <!-- F) Making sure we don't grow past max-height --> 91 <!-- Same as (D), except we've added a max-height on the second element. 92 --> 93 <div class="flexbox"> 94 <canvas style="height: 33px; flex: 2 auto"/> 95 <canvas style="height: 13px; max-height: 90px; flex: 3 auto"/> 96 </div> 97 98 <!-- G) Making sure we grow at least as large as min-height --> 99 <!-- Same as (C), except we've added a min-height on the second element. 100 --> 101 <div class="flexbox"> 102 <canvas style="height: 33px; flex: 2 auto"/> 103 <canvas style="height: 13px; min-height: 150px; flex: 3 auto"/> 104 </div> 105 106 </body> 107 </html>