| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkDrawPictureCallback_DEFINED |
| #define SkDrawPictureCallback_DEFINED |
| |
| /** |
| * Subclasses of this can be passed to canvas.drawPicture(). During the drawing |
| * of the picture, this callback will periodically be invoked. If its |
| * abortDrawing() returns true, then picture playback will be interrupted. |
| * |
| * The resulting drawing is undefined, as there is no guarantee how often the |
| * callback will be invoked. If the abort happens inside some level of nested |
| * calls to save(), restore will automatically be called to return the state |
| * to the same level it was before the drawPicture call was made. |
| */ |
| class SK_API SkDrawPictureCallback { |
| public: |
| SkDrawPictureCallback() {} |
| virtual ~SkDrawPictureCallback() {} |
| |
| virtual bool abortDrawing() = 0; |
| }; |
| |
| #endif//SkDrawPictureCallback_DEFINED |