Make createImageBitmap support SVG, but not RenderingContexts

This change fixes issue #923 by allowing ImageBitmap objects to be created from SVG source images, as long as the image has an intrinsic size. If the image does not have an intrinsic size, we still reject the promise with an InvalidStateError, as before. This change also removes CanvasRenderingContext2D from ImageBtimapSource, which was an oversight in PR #790. Since there is no longer a concept of a standalone context, this is no longer needed.
whatwg · Apr 1, 2016 · 43ad288 · 43ad288
1 parent fc53707
commit 43ad288
Showing 1 changed file with 12 additions and 47 deletions.
diff --git a/source b/source
@@ -90231,7 +90231,6 @@ typedef (<span>HTMLOrSVGImageElement</span> or
          <span>HTMLCanvasElement</span> or
          <span>Blob</span> or
          <span>ImageData</span> or
-         <span>CanvasRenderingContext2D</span> or
          <span>ImageBitmap</span>) <dfn>ImageBitmapSource</dfn>;
 
 enum <dfn>ImageOrientation</dfn> { "<span data-x="dom-ImageOrientation-none">none</span>", "<span data-x="dom-ImageOrientation-flipY">flipY</span>" };
@@ -90267,9 +90266,9 @@ interface <dfn>ImageBitmapFactories</dfn> {
 
    <dd>
 
-    <p>Takes <var>image</var>, which can be an <code>img</code> element,
-    <code>video</code>, or <code>canvas</code> element, a <code>Blob</code> object, an
-    <code>ImageData</code> object, a <code>CanvasRenderingContext2D</code> object, or another
+    <p>Takes <var>image</var>, which can be an <code>img</code> element, an <span>SVG
+    <code>image</code></span> element, a <code>video</code> element, a <code>canvas</code>
+    element, a <code>Blob</code> object, an <code>ImageData</code> object, or another
     <code>ImageBitmap</code> object, and returns a promise that is resolved when a new
     <code>ImageBitmap</code> is created.</p>
 
@@ -90395,9 +90394,9 @@ interface <dfn>ImageBitmapFactories</dfn> {
      return a promise rejected with an <code>InvalidStateError</code> exception and abort these
      steps.</p></li>
 
-     <li><p>If <var>image</var>'s media data is not a bitmap (e.g. it's a vector graphic), then
-     return a promise rejected with an <code>InvalidStateError</code> exception and abort these
-     steps.</p></li>
+     <li><p>If <var>image</var>'s media data has no intrinsic dimensions (e.g. it's a vector
+     graphic with no specified content size), then return a promise rejected with an
+     <code>InvalidStateError</code> exception and abort these steps.</p></li>
 
      <li><p>Create a new <code>ImageBitmap</code> object.</p></li>
 
@@ -90524,13 +90523,13 @@ interface <dfn>ImageBitmapFactories</dfn> {
 
      <li><p>Apply the <span data-x="Content-Type sniffing: image">image sniffing rules</span> to
      determine the file format of the image data, with MIME type of the <code>Blob</code> (as given
-     by the <code>Blob</code> object's <code data-x="dom-Blob-type">type</code> attribute) giving the
-     official type.</p></li>
+     by the <code>Blob</code> object's <code data-x="dom-Blob-type">type</code> attribute) giving
+     the official type.</p></li>
 
-     <li><p>If the image data is not in a supported bitmap image file format (e.g. it's a vector
-     graphic or it's not an image at all), or if the image data is corrupted in some fatal way such
-     that the image dimensions cannot be obtained, then reject the promise with an
-     <code>InvalidStateError</code> exception, and abort these steps.</p></li>
+     <li><p>If the image data is not in a supported image file format (e.g. it's not an image at
+     all), or if the image data is corrupted in some fatal way such that the image dimensions
+     cannot be obtained (e.g. a vector graphic with no intrinsic size), then reject the promise
+     with an <code>InvalidStateError</code> exception, and abort these steps.</p></li>
 
      <li><p>Create a new <code>ImageBitmap</code> object.</p></li>
 
@@ -90578,40 +90577,6 @@ interface <dfn>ImageBitmapFactories</dfn> {
 
    </dd>
 
-   <dt>If <var>image</var> is a <code>CanvasRenderingContext2D</code> object
-
-   <dd>
-
-    <ol>
-
-     <li><p>If either the <var>sw</var> or <var>sh</var> arguments are specified
-     but zero, return a promise rejected with an <code>IndexSizeError</code> exception and abort these steps.</p></li>
-
-     <li><p>If the <code>CanvasRenderingContext2D</code> object's <span>output bitmap</span> has
-     either a horizontal dimension or a vertical dimension equal to zero, then return a promise
-     rejected with an <code>InvalidStateError</code> exception and abort these steps.</p></li>
-
-     <li><p>Create a new <code>ImageBitmap</code> object.</p></li>
-
-     <li><p>Let the <code>ImageBitmap</code> object's <span
-     data-x="concept-ImageBitmap-bitmap-data">bitmap data</span> be a copy of the
-     <code>CanvasRenderingContext2D</code> object's <span>output bitmap</span>, <span>cropped to
-     the source rectangle with formatting</span>.</p></li>
-
-     <li><p>Set the <span data-x="concept-canvas-origin-clean">origin-clean</span> flag of the
-     <code>ImageBitmap</code> object's bitmap to the same value as the <span
-     data-x="concept-canvas-origin-clean">origin-clean</span> flag of the
-     <code>CanvasRenderingContext2D</code> object.</p></li>
-
-     <li><p>Return a new promise, but continue running these steps
-     <span>in parallel</span>.</p></li>
-
-     <li><p>Resolve the promise with the new <code>ImageBitmap</code> object as the value.</p></li>
-
-    </ol>
-
-   </dd>
-
 
    <dt>If <var>image</var> is an <code>ImageBitmap</code> object