| // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| part of html; |
| |
| /** |
| * An object that can be drawn to a [CanvasRenderingContext2D] object with |
| * [CanvasRenderingContext2D.drawImage], |
| * [CanvasRenderingContext2D.drawImageToRect], |
| * [CanvasRenderingContext2D.drawImageScaled], or |
| * [CanvasRenderingContext2D.drawImageScaledFromSource]. |
| * |
| * 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. |
| * |
| * If the CanvasImageSource is a [VideoElement] then the frame at the current |
| * playback position is used as the image. |
| * |
| * If the CanvasImageSource is a [CanvasElement] then the element's bitmap is |
| * used. |
| * |
| * ** Note: ** Currently, all versions of Internet Explorer do not support |
| * drawing a VideoElement to a canvas. Also, you may experience problems drawing |
| * a video to a canvas in Firefox if the source of the video is a data URL. |
| * |
| * 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. |
| */ |
| abstract class CanvasImageSource {} |
