third_party/WebKit/LayoutTests/scrollbars/scrollbar-pointer-events.html

   1 <!DOCTYPE html>
   2 <html>
   3 <body>
   4 <p>Test the effect of pointer-events on overflow scrollbars.</p>
   5
   6 <div id="result">FAIL: script didn't run to completion.</div>
   7
   8 <div id="div1" style="position: absolute; top: 100px; width: 130px; height: 340px; background-color: SeaShell; overflow: none;">
   9     Div 1
  10 </div>
  11 <div id="div2" style="position: absolute; top: 120px; width: 100px; height: 300px; background-color: Salmon; overflow: auto; pointer-events: all; z-index: 1;">
  12 <div id="div2Content" style="width: 200%; height: 500px;">
  13     Div 2
  14 </div>
  15 </div>
  16
  17 <div id="div3" style="position: absolute; top: 100px; left: 300px; width: 300px; height: 300px; background-color: PaleTurquoise; overflow: none;">
  18     Div 3
  19     <div id="div4" style="position: absolute; top: 30px; left: 30px; width: 240px; height: 240px; background-color: MediumTurquoise; overflow: auto; pointer-events: none;">
  20     <div id="div4Content" style="width: 200%; height: 200%;">
  21         Div 4
  22         <div id="div5" style="position: absolute; top: 30px; left: 30px; width: 180px; height: 180px; background-color: DarkSeaGreen; overflow: auto; pointer-events: all;">
  23         <div id="div5Content" style="width: 200%; height: 200%;">
  24             Div 5
  25         </div>
  26         </div>
  27     </div>
  28     </div>
  29 </div>
  30
  31 <script>
  32
  33     if (window.testRunner)
  34         testRunner.dumpAsText();
  35
  36     var div1 = document.getElementById("div1");
  37     var div2 = document.getElementById("div2");
  38
  39     // First sanity check points that should be within div2's vertical and horizontal scrollbars
  40     // when it has pointer-events:all.
  41     // Subtract 5px from the right (bottom) edge to get a point within the vertical (horizontal) scrollbar.
  42     var verticalPoint = [div2.offsetLeft + div2.offsetWidth - 5, div2.offsetTop + Math.floor(div2.offsetHeight / 2)];
  43     var horizontalPoint = [div2.offsetLeft + Math.floor(div2.offsetWidth / 2), div2.offsetTop + div2.offsetHeight - 5];
  44     var elem = document.elementFromPoint(verticalPoint[0], verticalPoint[1]);
  45     var elem2 = document.elementFromPoint(horizontalPoint[0], horizontalPoint[1]);
  46     if (elem.id != div2.id || elem2.id != div2.id) {
  47         document.getElementById("result").firstChild.data = "FAILURE: The element at points (" + verticalPoint + ") and (" + horizontalPoint + ") needs to be div2. You may need to turn on overflow scrollbars temporarily. (On Mac: Change the 'Show scroll bars' setting to 'Always'.)";
  48         throw "failure";
  49     }
  50
  51     // Apply pointer-events:visible to div2.
  52     div2.style.pointerEvents = "visible";
  53     if (window.getComputedStyle(div2).visibility != "visible") {
  54         document.getElementById("result").firstChild.data = "FAILURE: div2 needs to be visible.";
  55         throw "failure";
  56     }
  57     elem = document.elementFromPoint(verticalPoint[0], verticalPoint[1]);
  58     elem2 = document.elementFromPoint(horizontalPoint[0], horizontalPoint[1]);
  59     if (elem.id != div2.id || elem2.id != div2.id) {
  60         document.getElementById("result").firstChild.data = "FAILURE: With pointer-events:visible and visibility:visible applied to div2, (" + verticalPoint + ") and (" + horizontalPoint + ") should be div2.";
  61         throw "failure";
  62     }
  63
  64     // Hide div2 by applying visibility:hidden. Now when we hit test div2's scrollbars, we should
  65     // get div1 instead.
  66     // http://lists.w3.org/Archives/Public/www-style/2013Nov/0338.html
  67     div2.style.visibility = "hidden";
  68     elem = document.elementFromPoint(verticalPoint[0], verticalPoint[1]);
  69     elem2 = document.elementFromPoint(horizontalPoint[0], horizontalPoint[1]);
  70     if (elem.id != div1.id || elem2.id != div1.id) {
  71         document.getElementById("result").firstChild.data = "FAILURE: With pointer-events:visible and visibility:hidden applied to div2, (" + verticalPoint + ") and (" + horizontalPoint + ") should be div1.";
  72         throw "failure";
  73     }
  74
  75     var div3 = document.getElementById("div3");
  76     var div4 = document.getElementById("div4");
  77     var div5 = document.getElementById("div5");
  78
  79     // div4 has pointer-events:none and scrollbars. Overflow scrollbars of an element having
  80     // pointer-events:none do not participate in hit testing.
  81     // http://lists.w3.org/Archives/Public/www-style/2013Nov/0338.html
  82     var bcr = div4.getBoundingClientRect();
  83     verticalPoint = [Math.floor(bcr.right - 5), Math.floor(bcr.top + bcr.height / 2)];
  84     horizontalPoint = [Math.floor(bcr.left + bcr.width / 2), Math.floor(bcr.bottom - 5)];
  85     elem = document.elementFromPoint(verticalPoint[0], verticalPoint[1]);
  86     elem2 = document.elementFromPoint(horizontalPoint[0], horizontalPoint[1]);
  87     if (elem.id != div3.id || elem2.id != div3.id) {
  88         document.getElementById("result").firstChild.data = "FAILURE: With pointer-events:none applied to div4, (" + verticalPoint + ") and (" + horizontalPoint + ") should be div3.";
  89         throw "failure";
  90     }
  91
  92     // However, descendants of pointer-events:none elements having pointer-events:all do
  93     // participate in hit testing.
  94     bcr = div5.getBoundingClientRect();
  95     verticalPoint = [Math.floor(bcr.right - 5), Math.floor(bcr.top + bcr.height / 2)];
  96     horizontalPoint = [Math.floor(bcr.left + bcr.width / 2), Math.floor(bcr.bottom - 5)];
  97     elem = document.elementFromPoint(verticalPoint[0], verticalPoint[1]);
  98     elem2 = document.elementFromPoint(horizontalPoint[0], horizontalPoint[1]);
  99     if (elem.id != div5.id || elem2.id != div5.id) {
 100         document.getElementById("result").firstChild.data = "FAILURE: With pointer-events:all applied to div5, (" + verticalPoint + ") and (" + horizontalPoint + ") should be div5 even though it is a descendant of a pointer-events:none element.";
 101         throw "failure";
 102     }
 103
 104     document.getElementById("result").firstChild.data = "SUCCESS";
 105
 106 </script>
 107 </body>
 108 </html>