third_party/WebKit/LayoutTests/fast/shapes/shape-outside-floats/shape-outside-rounded-boxes-002.html

   1 <html>
   2 <head>
   3 <script src="../../../resources/js-test.js"></script>
   4 <script src="../resources/subpixel-utils.js"></script>
   5 <style>
   6 #container {
   7     font: 20px/1 Ahem, sans-serif;
   8     text-align: right;
   9     width: 200px;
  10     height: 120px;
  11     color: rgba(0,0,200, 0.25);
  12     margin: 25px;
  13     background-color: grey;
  14 }
  15
  16 #right-border-box {
  17     float: right;
  18     border-top-left-radius: 100px 30px;
  19     border-bottom-left-radius: 100px 30px;
  20     shape-outside: border-box;
  21     width: 100px;
  22     height: 80px;
  23     margin-top: 20px;
  24     margin-bottom: 20px;
  25     background-color: blue;
  26     background-clip: border-box;
  27 }
  28 </style>
  29 </head>
  30 <body>
  31     <div id="container">
  32         <div id="right-border-box"></div>
  33         <span id="a">X</span><br>
  34         <span id="b">X</span><br>
  35         <span id="c">X</span><br>
  36         <span id="d">X</span><br>
  37         <span id="e">X</span><br>
  38         <span id="f">X</span>
  39     </div>
  40     <div id="console"></div>
  41 </body>
  42 <script>
  43 function elementRect(elementId)
  44 {
  45     var s = document.getElementById("container").getBoundingClientRect();
  46     var r = document.getElementById(elementId).getBoundingClientRect();
  47     return {right: (r.left - s.left) + r.width, top: r.top - s.top, width: r.width, height: r.height};
  48 }
  49
  50 // You'll find the equation for the X intercept of an elliptical arc here (among other places):
  51 // http://hansmuller-webkit.blogspot.com/2012/07/computing-horizonal-rounded-rectangle.html
  52
  53 function cornerEllipseLeftXIntercept(y, cx, rx, ry)
  54 {
  55     var containerWidth = document.getElementById("container").getBoundingClientRect().width;
  56     return SubPixelLayout.snapToLayoutUnit(containerWidth - (cx + rx * Math.sqrt(1 - Math.pow((ry - y) / ry, 2))));
  57 }
  58
  59 // The layout implementation rounds up the width right of right floats. To account for that we compare truncated
  60 // values for the right edge of spans b and e, since they intercept the box's rounded corners.
  61
  62 shouldBe("elementRect('a').top", "0");
  63 shouldBe("elementRect('a').right", "200");
  64
  65 shouldBe("elementRect('b').top", "20");
  66 shouldEvaluateTo("Math.floor(elementRect('b').right)", Math.floor(cornerEllipseLeftXIntercept(40, 0, 100, 30)));
  67
  68 shouldBe("elementRect('c').top", "40");
  69 shouldBe("elementRect('c').right", "100");
  70
  71 shouldBe("elementRect('d').top", "60");
  72 shouldBe("elementRect('d').right", "100");
  73
  74 shouldBe("elementRect('e').top", "80");
  75 shouldEvaluateTo("Math.floor(elementRect('e').right)", Math.floor(cornerEllipseLeftXIntercept(40, 0, 100, 30)));
  76
  77 shouldBe("elementRect('f').top", "100");
  78 shouldBe("elementRect('f').right", "200");
  79
  80 var container = document.getElementById("container");
  81 container.parentNode.removeChild(container);
  82 </script>
  83 </html>