1 /* 2 * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #ifndef WEBRTC_MODULES_DESKTOP_CAPTURE_WIN_SCOPED_THREAD_DESKTOP_H_ 12 #define WEBRTC_MODULES_DESKTOP_CAPTURE_WIN_SCOPED_THREAD_DESKTOP_H_ 13 14 #include <windows.h> 15 16 #include "webrtc/base/constructormagic.h" 17 #include "webrtc/base/scoped_ptr.h" 18 19 namespace webrtc { 20 21 class Desktop; 22 23 class ScopedThreadDesktop { 24 public: 25 ScopedThreadDesktop(); 26 ~ScopedThreadDesktop(); 27 28 // Returns true if |desktop| has the same desktop name as the currently 29 // assigned desktop (if assigned) or as the initial desktop (if not assigned). 30 // Returns false in any other case including failing Win32 APIs and 31 // uninitialized desktop handles. 32 bool IsSame(const Desktop& desktop); 33 34 // Reverts the calling thread to use the initial desktop. 35 void Revert(); 36 37 // Assigns |desktop| to be the calling thread. Returns true if the thread has 38 // been switched to |desktop| successfully. Takes ownership of |desktop|. 39 bool SetThreadDesktop(Desktop* desktop); 40 41 private: 42 // The desktop handle assigned to the calling thread by Set 43 rtc::scoped_ptr<Desktop> assigned_; 44 45 // The desktop handle assigned to the calling thread at creation. 46 rtc::scoped_ptr<Desktop> initial_; 47 48 RTC_DISALLOW_COPY_AND_ASSIGN(ScopedThreadDesktop); 49 }; 50 51 } // namespace webrtc 52 53 #endif // WEBRTC_MODULES_DESKTOP_CAPTURE_WIN_SCOPED_THREAD_DESKTOP_H_ 54
