[cssom-view] Apply transforms for elementFromPoint, elementsFromPoint, caretPositionFromPoint. https://www.w3.org/Bugs/Public/show_bug.cgi?id=15430

Author: Simon Pieters

cssom-view/Overview.html

@@ -868,7 +868,7 @@ <h2 id="extensions-to-the-document-interface"><span class="secno">6 </span>Exten
  <var>y</var> is greater than the <a href="#viewport">viewport</a> height excluding the size of a rendered scroll bar (if any), or there is no <a href="#viewport">viewport</a>
  associated with the document, return null and terminate these steps.
  <li><p>If there is a <a href="#layout-box">layout box</a> in the <a href="#viewport">viewport</a> that would be a target for hit testing at coordinates <var>x</var>,<var>y</var>,
- return the associated element and terminate these steps.
+ when applying the <a href="#transforms">transforms</a> that apply to the descendants of the <a href="#viewport">viewport</a>, return the associated element and terminate these steps.
  <li><p>If the document has a root element, return the root element and terminate these steps.
  <li><p>Return null.
 </ol>
@@ -884,7 +884,8 @@ <h2 id="extensions-to-the-document-interface"><span class="secno">6 </span>Exten
  <var>y</var> is greater than the <a href="#viewport">viewport</a> height excluding the size of a rendered scroll bar (if any), or there is no <a href="#viewport">viewport</a>
  associated with the document, return <var>sequence</var> and terminate these steps.
  <li><p>For each <a href="#layout-box">layout box</a> in the <a href="#viewport">viewport</a>, in paint order, starting with the topmost box, that would be a target for hit testing at
- coordinates <var>x</var>,<var>y</var> even if nothing would be overlapping it, append the associated element to <var>sequence</var>.
+ coordinates <var>x</var>,<var>y</var> even if nothing would be overlapping it, when applying the <a href="#transforms">transforms</a> that apply to the descendants of the
+ <a href="#viewport">viewport</a>, append the associated element to <var>sequence</var>.
  <li><p>If the document has a root element, and the last item in <var>sequence</var> is not the root element, append the root element to <var>sequence</var>.
  <li><p>Return <var>sequence</var>.
 </ol>
@@ -900,13 +901,12 @@ <h2 id="extensions-to-the-document-interface"><span class="secno">6 </span>Exten
  (if any) return null.</li>
  <li><p>If at the coordinates <var>x</var>,<var>y</var>
  in the <a href="#viewport">viewport</a> no text insertion point indicator would have
- been inserted return null.</li>
+ been inserted when applying the <a href="#transforms">transforms</a> that apply to the descendants of the <a href="#viewport">viewport</a>, return null.</li>
  <li>
   <p>If at the coordinates <var>x</var>,<var>y</var>
   in the <a href="#viewport">viewport</a> a text insertion point indicator would have
-  been inserted in a text entry widget which is also a replaced element
-  return a <a href="#caret-position">caret position</a> with its properties set as
-  follows:</p>
+  been inserted in a text entry widget which is also a replaced element, when applying the <a href="#transforms">transforms</a> that apply to the descendants of the
+  <a href="#viewport">viewport</a>, return a <a href="#caret-position">caret position</a> with its properties set as follows:</p>
   <dl>
    <dt><a href="#caret-node">caret node</a></dt>
    <dd><p>The node corresponding to the text entry widget.</dd>
@@ -921,8 +921,8 @@ <h2 id="extensions-to-the-document-interface"><span class="secno">6 </span>Exten
   <p>Otherwise, return a <a href="#caret-position">caret position</a> where the
   <a href="#caret-range">caret range</a> is a collapsed
   <code class="external" data-anolis-spec="dom"><a href="http://dom.spec.whatwg.org/#range">Range</a></code> object for the position
-  where the text insertion point indicator would have been inserted and
-  the other properties are set as follows:</p>
+  where the text insertion point indicator would have been inserted when applying the <a href="#transforms">transforms</a> that apply to the descendants of the
+  <a href="#viewport">viewport</a>, and the other properties are set as follows:</p>
   <dl>
    <dt><a href="#caret-node">caret node</a></dt>
    <dd><p>The <code class="external" data-anolis-spec="dom" title="dom-Range-startContainer"><a href="http://dom.spec.whatwg.org/#dom-range-startcontainer">startContainer</a></code>

cssom-view/Overview.src.html

@@ -829,7 +829,7 @@ <h2>Extensions to the <code title>Document</code> Interface</h2>
  <var>y</var> is greater than the <span>viewport</span> height excluding the size of a rendered scroll bar (if any), or there is no <span>viewport</span>
  associated with the document, return null and terminate these steps.
  <li><p>If there is a <span>layout box</span> in the <span>viewport</span> that would be a target for hit testing at coordinates <var>x</var>,<var>y</var>,
- return the associated element and terminate these steps.
+ when applying the <span>transforms</span> that apply to the descendants of the <span>viewport</span>, return the associated element and terminate these steps.
  <li><p>If the document has a root element, return the root element and terminate these steps.
  <li><p>Return null.
 </ol>
@@ -845,7 +845,8 @@ <h2>Extensions to the <code title>Document</code> Interface</h2>
  <var>y</var> is greater than the <span>viewport</span> height excluding the size of a rendered scroll bar (if any), or there is no <span>viewport</span>
  associated with the document, return <var>sequence</var> and terminate these steps.
  <li><p>For each <span>layout box</span> in the <span>viewport</span>, in paint order, starting with the topmost box, that would be a target for hit testing at
- coordinates <var>x</var>,<var>y</var> even if nothing would be overlapping it, append the associated element to <var>sequence</var>.
+ coordinates <var>x</var>,<var>y</var> even if nothing would be overlapping it, when applying the <span>transforms</span> that apply to the descendants of the
+ <span>viewport</span>, append the associated element to <var>sequence</var>.
  <li><p>If the document has a root element, and the last item in <var>sequence</var> is not the root element, append the root element to <var>sequence</var>.
  <li><p>Return <var>sequence</var>.
 </ol>
@@ -861,13 +862,12 @@ <h2>Extensions to the <code title>Document</code> Interface</h2>
  (if any) return null.</p></li>
  <li><p>If at the coordinates <var>x</var>,<var>y</var>
  in the <span>viewport</span> no text insertion point indicator would have
- been inserted return null.</p></li>
+ been inserted when applying the <span>transforms</span> that apply to the descendants of the <span>viewport</span>, return null.</p></li>
  <li>
   <p>If at the coordinates <var>x</var>,<var>y</var>
   in the <span>viewport</span> a text insertion point indicator would have
-  been inserted in a text entry widget which is also a replaced element
-  return a <span>caret position</span> with its properties set as
-  follows:</p>
+  been inserted in a text entry widget which is also a replaced element, when applying the <span>transforms</span> that apply to the descendants of the
+  <span>viewport</span>, return a <span>caret position</span> with its properties set as follows:</p>
   <dl>
    <dt><span>caret node</span></dt>
    <dd><p>The node corresponding to the text entry widget.</p></dd>
@@ -882,8 +882,8 @@ <h2>Extensions to the <code title>Document</code> Interface</h2>
   <p>Otherwise, return a <span>caret position</span> where the
   <span>caret range</span> is a collapsed
   <code data-anolis-spec=dom>Range</code> object for the position
-  where the text insertion point indicator would have been inserted and
-  the other properties are set as follows:</p>
+  where the text insertion point indicator would have been inserted when applying the <span>transforms</span> that apply to the descendants of the
+  <span>viewport</span>, and the other properties are set as follows:</p>
   <dl>
    <dt><span>caret node</span></dt>
    <dd><p>The <code data-anolis-spec=dom title=dom-Range-startContainer>startContainer</code>