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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 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 #include "base/win/metro.h" | 5 #include "base/win/metro.h" |
| 6 | 6 |
| 7 #include "base/message_loop.h" | 7 #include "base/message_loop.h" |
| 8 #include "base/string_util.h" | 8 #include "base/string_util.h" |
| 9 #include "base/win/scoped_comptr.h" | 9 #include "base/win/scoped_comptr.h" |
| 10 #include "base/win/windows_version.h" | 10 #include "base/win/windows_version.h" |
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| 34 DCHECK(metro_module != kUninitialized); | 34 DCHECK(metro_module != kUninitialized); |
| 35 return metro_module; | 35 return metro_module; |
| 36 } | 36 } |
| 37 | 37 |
| 38 bool IsMetroProcess() { | 38 bool IsMetroProcess() { |
| 39 enum ImmersiveState { | 39 enum ImmersiveState { |
| 40 kImmersiveUnknown, | 40 kImmersiveUnknown, |
| 41 kImmersiveTrue, | 41 kImmersiveTrue, |
| 42 kImmersiveFalse | 42 kImmersiveFalse |
| 43 }; | 43 }; |
| 44 typedef BOOL (WINAPI* IsImmersiveProcessFunc)(HANDLE process); | |
| 45 | |
| 46 // The immersive state of a process can never change. | 44 // The immersive state of a process can never change. |
| 47 // Look it up once and cache it here. | 45 // Look it up once and cache it here. |
| 48 static ImmersiveState state = kImmersiveUnknown; | 46 static ImmersiveState state = kImmersiveUnknown; |
| 49 | 47 |
| 50 if (state == kImmersiveUnknown) { | 48 if (state == kImmersiveUnknown) { |
| 51 // The lookup hasn't been done yet. Note that the code below here is | 49 if (IsImmersiveProcess(::GetCurrentProcess())) { |
| 52 // idempotent, so it doesn't matter if it races to assignment on multiple | 50 state = kImmersiveTrue; |
| 53 // threads. | |
| 54 HMODULE user32 = ::GetModuleHandleA("user32.dll"); | |
| 55 DCHECK(user32 != NULL); | |
| 56 | |
| 57 IsImmersiveProcessFunc is_immersive_process = | |
| 58 reinterpret_cast<IsImmersiveProcessFunc>( | |
| 59 ::GetProcAddress(user32, "IsImmersiveProcess")); | |
| 60 | |
| 61 if (is_immersive_process != NULL) { | |
| 62 if (is_immersive_process(::GetCurrentProcess())) { | |
| 63 state = kImmersiveTrue; | |
| 64 } else { | |
| 65 state = kImmersiveFalse; | |
| 66 } | |
| 67 } else { | 51 } else { |
| 68 // No "IsImmersiveProcess" export on user32.dll, so this is pre-Windows8 | |
| 69 // and therefore not immersive. | |
| 70 state = kImmersiveFalse; | 52 state = kImmersiveFalse; |
| 71 } | 53 } |
| 72 } | 54 } |
| 73 DCHECK_NE(kImmersiveUnknown, state); | 55 DCHECK_NE(kImmersiveUnknown, state); |
| 56 return state == kImmersiveTrue; |
| 57 } |
| 74 | 58 |
| 75 return state == kImmersiveTrue; | 59 bool IsImmersiveProcess(HANDLE process) { |
| 60 typedef BOOL (WINAPI* IsImmersiveProcessFunc)(HANDLE process); |
| 61 HMODULE user32 = ::GetModuleHandleA("user32.dll"); |
| 62 DCHECK(user32 != NULL); |
| 63 |
| 64 IsImmersiveProcessFunc is_immersive_process = |
| 65 reinterpret_cast<IsImmersiveProcessFunc>( |
| 66 ::GetProcAddress(user32, "IsImmersiveProcess")); |
| 67 |
| 68 if (is_immersive_process) |
| 69 return is_immersive_process(process) ? true: false; |
| 70 return false; |
| 76 } | 71 } |
| 77 | 72 |
| 78 bool IsTsfAwareRequired() { | 73 bool IsTsfAwareRequired() { |
| 79 // Although this function is equal to IsMetroProcess at this moment, | 74 // Although this function is equal to IsMetroProcess at this moment, |
| 80 // Chrome for Win7 and Vista may support TSF in the future. | 75 // Chrome for Win7 and Vista may support TSF in the future. |
| 81 return g_should_tsf_aware_required || IsMetroProcess(); | 76 return g_should_tsf_aware_required || IsMetroProcess(); |
| 82 } | 77 } |
| 83 | 78 |
| 84 void SetForceToUseTsf() { | 79 void SetForceToUseTsf() { |
| 85 g_should_tsf_aware_required = true; | 80 g_should_tsf_aware_required = true; |
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| 185 reinterpret_cast<GetInitialSearchString>( | 180 reinterpret_cast<GetInitialSearchString>( |
| 186 ::GetProcAddress(metro, "GetInitialSearchString")); | 181 ::GetProcAddress(metro, "GetInitialSearchString")); |
| 187 DCHECK(initial_search_string); | 182 DCHECK(initial_search_string); |
| 188 *params = initial_search_string(); | 183 *params = initial_search_string(); |
| 189 } | 184 } |
| 190 return launch_type; | 185 return launch_type; |
| 191 } | 186 } |
| 192 | 187 |
| 193 } // namespace win | 188 } // namespace win |
| 194 } // namespace base | 189 } // namespace base |
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