Refactors HWNDPhotobooth into NativeViewPhotobooth and...

chrome/browser/views/tabs/hwnd_photobooth.h

-// Copyright (c) 2006-2008 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_VIEWS_TABS_HWND_PHOTOBOOTH_H__
-#define CHROME_BROWSER_VIEWS_TABS_HWND_PHOTOBOOTH_H__
-
-#include "base/basictypes.h"
-#include "base/gfx/rect.h"
-
-namespace gfx {
-class Canvas;
-}
-namespace views {
-class WidgetWin;
-}
-
-///////////////////////////////////////////////////////////////////////////////
-// HWNDPhotobooth
-//
-//  An object that a HWND "steps into" to have its picture taken. This is used
-//  to generate a full size screen shot of the contents of a HWND including
-//  any child windows.
-//
-//  Implementation note: This causes the HWND to be re-parented to a mostly
-//  off-screen layered window.
-//
-class HWNDPhotobooth {
- public:
-  // Creates the photo booth. Constructs a nearly off-screen window, parents
-  // the HWND, then shows it. The caller is responsible for destroying this
-  // window, since the photo-booth will detach it before it is destroyed.
-  // |canvas| is a canvas to paint the contents into, and dest_bounds is the
-  // target area in |canvas| to which painted contents will be clipped.
-  explicit HWNDPhotobooth(HWND initial_hwnd);
-
-  // Destroys the photo booth window.
-  virtual ~HWNDPhotobooth();
-
-  // Replaces the HWND in the photo booth with the specified one. The caller is
-  // responsible for destroying this HWND since it will be detached from the
-  // capture window before the capture window is destroyed.
-  void ReplaceHWND(HWND new_hwnd);
-
-  // Paints the current display image of the window into |canvas|, clipped to
-  // |target_bounds|.
-  void PaintScreenshotIntoCanvas(gfx::Canvas* canvas,
-                                 const gfx::Rect& target_bounds);
-
- private:
-  // Creates a mostly off-screen window to contain the HWND to be captured.
-  void CreateCaptureWindow(HWND initial_hwnd);
-
-  // The nearly off-screen photo-booth layered window used to hold the HWND.
-  views::WidgetWin* capture_window_;
-
-  // The current HWND being captured.
-  HWND current_hwnd_;
-
-  DISALLOW_EVIL_CONSTRUCTORS(HWNDPhotobooth);
-};
-
-#endif  // #ifndef CHROME_BROWSER_VIEWS_TABS_HWND_PHOTOBOOTH_H__