third_party/WebKit/LayoutTests/fast/shapes/shape-outside-floats/shape-outside-floats-ellipse-margin-right.html

   1 <!DOCTYPE html>
   2 <html>
   3 <head>
   4 <script src="../../../resources/js-test.js"></script>
   5 <script src="../resources/subpixel-utils.js"></script>
   6 <style>
   7 #container-border {
   8     border: 1px solid black;
   9     margin: 10px;
  10     width: 500px;
  11 }
  12
  13 #container {
  14     font: 20px/1 Ahem, sans-serif;
  15     width: 500px;
  16     height: 300px;
  17     text-align: right;
  18   }
  19
  20 #float-right {
  21     float: right;
  22     position: relative;
  23     overflow: visible;
  24     shape-outside: ellipse(200px 100px at 225px 125px);
  25     shape-margin: 25px;
  26     width: 450px;
  27     height: 250px;
  28 }
  29
  30 #svg-shape-ellipse {
  31     position: absolute;
  32     display:block;
  33     top: 0px;
  34     left: 0px;
  35     width: 500px;
  36     height: 300px;
  37 }
  38 </style>
  39
  40 <body>
  41 <p>The right edges of the three black squares should follow the outer ellipse boundary and each square should appear on a subsequent line.</p>
  42 <div id="container-border">
  43     <div id="container">
  44         <div id="float-right">
  45             <svg id="svg-shape-ellipse" xmlns="http://www.w3.org/2000/">
  46                 <ellipse cx="225" cy="125" rx="200" ry="100" fill="green"></ellipse>
  47                 <ellipse cx="225" cy="125" rx="225" ry="125" fill="none" stroke="green"></ellipse>
  48             </svg>
  49         </div>
  50         <span id="s1">X</span></br><span id="s2">X</span><br/><span id="s3">X</span>
  51     </div>
  52 </div>
  53 <div id="console"></div>
  54 </body>
  55 <script>
  56 function elementRect(elementId)
  57 {
  58     var s = document.getElementById("container").getBoundingClientRect();
  59     var r = document.getElementById(elementId).getBoundingClientRect();
  60     return {right: (r.left - s.left) + r.width, top: r.top - s.top, width: r.width, height: r.height};
  61 }
  62
  63 // You'll find the equation for the X intercept of an elliptical arc here (among other places):
  64 // http://hansmuller-webkit.blogspot.com/2012/07/computing-horizonal-rounded-rectangle.html
  65
  66 function marginEllipseRightXIntercept(y, cx, rx, ry)
  67 {
  68     var containerWidth = document.getElementById("container").getBoundingClientRect().width;
  69     var f = SubPixelLayout.snapToLayoutUnit(containerWidth - (cx + rx * Math.sqrt(1 - Math.pow((ry - y) / ry, 2))));
  70     return String( Math.floor(f) );
  71 }
  72
  73 // In the ".right" tests below, it's the lower edge of the 20px Ahem glyph that that defines the element rect's left edge.
  74 // That's why the Y coordinate in each of those tests is 20 greater than the ".top" test.
  75
  76 var quiet = true; // PASS output depends on SubPixelLayout.isEnabled()
  77
  78 shouldBe("elementRect('s1').top", "0");
  79 shouldBe("elementRect('s1').right", marginEllipseRightXIntercept(20, 225, 225, 125), quiet);
  80
  81 shouldBe("elementRect('s2').top", "20");
  82 shouldBe("elementRect('s2').right", marginEllipseRightXIntercept(40, 225, 225, 125), quiet);
  83
  84 shouldBe("elementRect('s3').top", "40");
  85 shouldBe("elementRect('s3').right", marginEllipseRightXIntercept(60, 225, 225, 125), quiet);
  86
  87 </script>
  88 </html>
  89