| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROME_BROWSER_EXTENSIONS_API_CAPTURE_WEB_CONTENTS_FUNCTION_H_ |
| #define CHROME_BROWSER_EXTENSIONS_API_CAPTURE_WEB_CONTENTS_FUNCTION_H_ |
| |
| #include "chrome/browser/extensions/chrome_extension_function.h" |
| #include "chrome/common/extensions/api/types.h" |
| |
| class SkBitmap; |
| |
| namespace content { |
| class WebContents; |
| } |
| |
| namespace extensions { |
| |
| // Base class for capturing visibile area of a WebContents. |
| // This is used by both webview.captureVisibleRegion and tabs.captureVisibleTab. |
| class CaptureWebContentsFunction : public ChromeAsyncExtensionFunction { |
| public: |
| CaptureWebContentsFunction(); |
| |
| protected: |
| virtual ~CaptureWebContentsFunction(); |
| |
| // ExtensionFunction implementation. |
| virtual bool HasPermission() OVERRIDE; |
| virtual bool RunImpl() OVERRIDE; |
| |
| virtual bool IsScreenshotEnabled() = 0; |
| virtual content::WebContents* GetWebContentsForID(int context_id) = 0; |
| |
| enum FailureReason { |
| FAILURE_REASON_UNKNOWN, |
| FAILURE_REASON_CONTENT_NOT_FOUND, |
| FAILURE_REASON_ENCODING_FAILED, |
| FAILURE_REASON_VIEW_INVISIBLE |
| }; |
| virtual void OnCaptureFailure(FailureReason reason) = 0; |
| |
| private: |
| typedef api::types::ImageDetails ImageDetails; |
| |
| void CopyFromBackingStoreComplete(bool succeed, const SkBitmap& bitmap); |
| void GetSnapshotFromRendererComplete(bool succeeded, const SkBitmap& bitmap); |
| void OnCaptureSuccess(const SkBitmap& bitmap); |
| |
| // |context_id_| is the ID used to find the relevant WebContents. In the |
| // |tabs.captureVisibleTab()| api, this represents the window-id, and in the |
| // |webview.captureVisibleRegion()| api, this represents the instance-id of |
| // the guest. |
| int context_id_; |
| |
| // The format (JPEG vs PNG) of the resulting image. Set in RunImpl(). |
| ImageDetails::Format image_format_; |
| |
| // Quality setting to use when encoding jpegs. Set in RunImpl(). |
| int image_quality_; |
| |
| DISALLOW_COPY_AND_ASSIGN(CaptureWebContentsFunction); |
| }; |
| |
| } // namespace extensions |
| |
| #endif // CHROME_BROWSER_EXTENSIONS_API_CAPTURE_WEB_CONTENTS_FUNCTION_H_ |