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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
Mark Mentovai
2011/10/06 03:52:25
The issue description becomes part of the check-in
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2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef BASE_WIN_SCOPED_HDC_H_ | 5 #ifndef BASE_WIN_SCOPED_HDC_H_ |
6 #define BASE_WIN_SCOPED_HDC_H_ | 6 #define BASE_WIN_SCOPED_HDC_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include <windows.h> | 9 #include <windows.h> |
10 | 10 |
11 #include "base/basictypes.h" | 11 #include "base/basictypes.h" |
(...skipping 16 matching lines...) Expand all Loading... | |
28 ~ScopedGetDC() { | 28 ~ScopedGetDC() { |
29 if (hdc_) | 29 if (hdc_) |
30 ReleaseDC(hwnd_, hdc_); | 30 ReleaseDC(hwnd_, hdc_); |
31 } | 31 } |
32 | 32 |
33 operator HDC() { return hdc_; } | 33 operator HDC() { return hdc_; } |
34 | 34 |
35 private: | 35 private: |
36 HWND hwnd_; | 36 HWND hwnd_; |
37 HDC hdc_; | 37 HDC hdc_; |
38 | |
38 DISALLOW_COPY_AND_ASSIGN(ScopedGetDC); | 39 DISALLOW_COPY_AND_ASSIGN(ScopedGetDC); |
39 }; | 40 }; |
40 | 41 |
41 // Like ScopedHandle but for HDC. Only use this on HDCs returned from | 42 // Like ScopedHandle but for HDC. Only use this on HDCs returned from |
42 // CreateCompatibleDC. | 43 // CreateCompatibleDC, CreateDC and CreateIC. |
43 // TODO(yosin) To eliminate confusion with ScopedGetDC, we should rename | 44 class ScopedCreateDC { |
44 // ScopedHDC to ScopedCreateDC. | |
45 class ScopedHDC { | |
46 public: | 45 public: |
47 ScopedHDC() : hdc_(NULL) { } | 46 ScopedCreateDC() : hdc_(NULL) { } |
48 explicit ScopedHDC(HDC h) : hdc_(h) { } | 47 explicit ScopedCreateDC(HDC h) : hdc_(h) { } |
49 | 48 |
50 ~ScopedHDC() { | 49 ~ScopedCreateDC() { |
51 Close(); | 50 Close(); |
52 } | 51 } |
53 | 52 |
54 HDC Get() { | 53 HDC Get() { |
55 return hdc_; | 54 return hdc_; |
56 } | 55 } |
57 | 56 |
58 void Set(HDC h) { | 57 void Set(HDC h) { |
59 Close(); | 58 Close(); |
60 hdc_ = h; | 59 hdc_ = h; |
61 } | 60 } |
62 | 61 |
63 operator HDC() { return hdc_; } | 62 operator HDC() { return hdc_; } |
64 | 63 |
65 private: | 64 private: |
66 void Close() { | 65 void Close() { |
67 #ifdef NOGDI | 66 #ifdef NOGDI |
68 assert(false); | 67 assert(false); |
69 #else | 68 #else |
70 if (hdc_) | 69 if (hdc_) |
71 DeleteDC(hdc_); | 70 DeleteDC(hdc_); |
72 #endif // NOGDI | 71 #endif // NOGDI |
73 } | 72 } |
74 | 73 |
75 HDC hdc_; | 74 HDC hdc_; |
76 DISALLOW_COPY_AND_ASSIGN(ScopedHDC); | 75 |
76 DISALLOW_COPY_AND_ASSIGN(ScopedCreateDC); | |
77 }; | 77 }; |
78 | 78 |
79 } // namespace win | 79 } // namespace win |
80 } // namespace base | 80 } // namespace base |
81 | 81 |
82 #endif // BASE_WIN_SCOPED_HDC_H_ | 82 #endif // BASE_WIN_SCOPED_HDC_H_ |
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