native_view_photobooth.h revision 72a454cd3513ac24fbdd0e0cb9ad70b86a99b801 
1// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CHROME_BROWSER_UI_VIEWS_TABS_NATIVE_VIEW_PHOTOBOOTH_H_
6#define CHROME_BROWSER_UI_VIEWS_TABS_NATIVE_VIEW_PHOTOBOOTH_H_
7#pragma once
8
9#include "ui/gfx/native_widget_types.h"
10
11namespace gfx {
12class Canvas;
13class Rect;
14}
15///////////////////////////////////////////////////////////////////////////////
16// NativeViewPhotobooth
17//
18//  An object that a NativeView "steps into" to have its picture taken. This is
19//  used to generate a full size screen shot of the contents of a NativeView
20//  including any child windows.
21//
22//  Implementation note: This causes the NativeView to be re-parented to a
23//  mostly off-screen layered window.
24//
25class NativeViewPhotobooth {
26 public:
27  // Creates the photo booth. Constructs a nearly off-screen window, parents
28  // the view, then shows it. The caller is responsible for destroying this
29  // photo-booth, since the photo-booth will detach it before it is destroyed.
30  static NativeViewPhotobooth* Create(gfx::NativeView initial_view);
31
32  // Destroys the photo booth window.
33  virtual ~NativeViewPhotobooth() {}
34
35  // Replaces the view in the photo booth with the specified one.
36  virtual void Replace(gfx::NativeView new_view) = 0;
37
38  // Paints the current display image of the window into |canvas|, clipped to
39  // |target_bounds|.
40  virtual void PaintScreenshotIntoCanvas(gfx::Canvas* canvas,
41                                         const gfx::Rect& target_bounds) = 0;
42};
43
44#endif  // CHROME_BROWSER_UI_VIEWS_TABS_NATIVE_VIEW_PHOTOBOOTH_H_
45