dom/svg/test/test_hit-testing-and-viewbox.xhtml

   1 <html xmlns="http://www.w3.org/1999/xhtml">
   2 <!--
   3 https://bugzilla.mozilla.org/show_bug.cgi?id=1486952
   4 -->
   5 <head>
   6   <title>Test that hit-testing works after a viewBox update</title>
   7
   8   <style>
   9     :hover { fill: lime; }
  10   </style>
  11
  12   <script src="/tests/SimpleTest/SimpleTest.js"></script>
  13   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
  14 </head>
  15
  16 <body onload="run()">
  17 <script class="testbody" type="text/javascript">
  18 <![CDATA[
  19
  20 SimpleTest.waitForExplicitFinish();
  21
  22 function run() {
  23   const div = $("div");
  24   const offsetX = div.offsetLeft;
  25   const offsetY = div.offsetTop;
  26   const outerRect = $("outerRect");
  27   const innerRect = $("innerRect");
  28   const outerSVG = $("outerSVG");
  29   const innerSVG = $("innerSVG");
  30   let got;
  31
  32   // Update the inner SVG viewBox to "move" the inner rectangle off its current
  33   // position on screen:
  34   innerSVG.setAttribute("viewBox", "-25 0 50 50");
  35   got = document.elementFromPoint(offsetX + 150, offsetY + 25);
  36   is(got, innerRect, "Should hit inner rectangle (1)");
  37
  38   // Update the inner SVG viewBox again. (At the time of writing, a reflow is
  39   // triggered the first time you change viewBox on an inner svg, so the
  40   // previous test is expected to always pass. This next test will fail if we're
  41   // updating overflows on the inner svg frame instead of its children).
  42   innerSVG.setAttribute("viewBox", "0 -25 50 50");
  43   got = document.elementFromPoint(offsetX + 100, offsetY + 75);
  44   is(got, innerRect, "Should hit inner rectangle (2)");
  45
  46   // Now update the outer SVG viewBox and confirm that both rectangles are
  47   // registered.  (Note that in this case the overflow rectangle of the inner
  48   // svg is the inner svg's viewport, so be sure to "move" the outer svg so that
  49   // the "new" outer rectangle and inner svg are off the current outerRect
  50   // union inner svg viewport - hit testing still works in that union.)
  51   outerSVG.setAttribute("viewBox", "-200 0 400 100");
  52   // Outer:
  53   got = document.elementFromPoint(offsetX + 250, offsetY + 50);
  54   is(got, outerRect, "Should hit outer rectangle");
  55   // Inner:
  56   got = document.elementFromPoint(offsetX + 300, offsetY + 75);
  57   is(got, innerRect, "Should hit inner rectangle (3)");
  58
  59   SimpleTest.finish();
  60 }
  61
  62 ]]>
  63 </script>
  64 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1486952">Mozilla Bug 1486952</a>
  65 <p id="display"></p>
  66 <div id="content">
  67
  68   <div width="100%" height="1" id="div"></div>
  69   <svg xmlns="http://www.w3.org/2000/svg" id="outerSVG" width="400" height="100"
  70        viewBox="0 0 400 100">
  71     <rect x="25" y="25" width="50" height="50" fill="red" id="outerRect" />
  72     <svg x="75" width="100" height="100" viewBox="0 0 50 50" id="innerSVG">
  73       <rect width="25" height="25" fill="red" id="innerRect" />
  74     </svg>
  75   </svg>
  76
  77 </div>
  78 <pre id="test">
  79 </pre>
  80 </body>
  81 </html>