Index: dart/tools/dom/src/CanvasImageSource.dart |
=================================================================== |
--- dart/tools/dom/src/CanvasImageSource.dart (revision 29958) |
+++ dart/tools/dom/src/CanvasImageSource.dart (working copy) |
@@ -5,31 +5,42 @@ |
part of html; |
/** |
- * An object that can be drawn to a [CanvasRenderingContext2D] object with |
- * [CanvasRenderingContext2D.drawImage], |
- * [CanvasRenderingContext2D.drawImageToRect], |
- * [CanvasRenderingContext2D.drawImageScaled], or |
- * [CanvasRenderingContext2D.drawImageScaledFromSource]. |
+ * An object that can be drawn to a 2D canvas rendering context. |
* |
- * If the CanvasImageSource is an [ImageElement] then the element's image is |
- * used. If the [ImageElement] is an animated image, then the poster frame is |
- * used. If there is no poster frame, then the first frame of animation is used. |
+ * This object is either an [ImageElement], [VideoElement], or |
+ * [CanvasElement]. |
* |
- * If the CanvasImageSource is a [VideoElement] then the frame at the current |
- * playback position is used as the image. |
+ * The image drawn to the canvas differs by implementation: |
* |
- * If the CanvasImageSource is a [CanvasElement] then the element's bitmap is |
- * used. |
+ * * If this object is an [ImageElement], then this element's image is |
+ * drawn to the canvas. If this element is an animated image, then this |
+ * element's poster frame is drawn. If this element has no poster frame, then |
+ * the first frame of animation is drawn. |
* |
- * ** Note: ** Currently, all versions of Internet Explorer do not support |
- * drawing a VideoElement to a canvas. Also, you may experience problems drawing |
+ * * If this object is a [VideoElement], then the frame at this element's current |
+ * playback position is drawn to the canvas. |
+ * |
+ * * If this object is a [CanvasElement], then this element's bitmap is drawn to |
+ * the canvas. |
+ * |
+ * **Note:** Currently all versions of Internet Explorer do not support |
+ * drawing a video element to a canvas. You may also encounter problems drawing |
* a video to a canvas in Firefox if the source of the video is a data URL. |
* |
- * See also: |
+ * ## See also |
* |
- * * [CanvasImageSource](http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#image-sources-for-2d-rendering-contexts) |
- * from the WHATWG. |
- * * [drawImage](http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#dom-context-2d-drawimage) |
- * from the WHATWG. |
+ * * [CanvasRenderingContext2D.drawImage] |
+ * * [CanvasRenderingContext2D.drawImageToRect] |
+ * * [CanvasRenderingContext2D.drawImageScaled] |
+ * * [CanvasRenderingContext2D.drawImageScaledFromSource] |
+ * |
+ * ## Other resources |
+ * |
+ * * [Image sources for 2D rendering contexts] |
+ * (http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#image-sources-for-2d-rendering-contexts) |
+ * from WHATWG. |
+ * * [Drawing images] |
+ * (http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#dom-context-2d-drawimage) |
+ * from WHATWG. |
*/ |
abstract class CanvasImageSource {} |