1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CHROME_BROWSER_HWND_PHOTOBOOTH_H__
#define CHROME_BROWSER_HWND_PHOTOBOOTH_H__
#include "base/basictypes.h"
#include "base/gfx/rect.h"
class ChromeCanvas;
namespace ChromeViews {
class HWNDViewContainer;
}
///////////////////////////////////////////////////////////////////////////////
// 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(ChromeCanvas* 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.
ChromeViews::HWNDViewContainer* capture_window_;
// The current HWND being captured.
HWND current_hwnd_;
DISALLOW_EVIL_CONSTRUCTORS(HWNDPhotobooth);
};
#endif // #ifndef CHROME_BROWSER_HWND_PHOTOBOOTH_H__
|
