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| 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 | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "base/win/metro.h" | |
| 6 | |
| 7 #include "base/strings/string_util.h" | |
| 8 | |
| 9 namespace base { | |
| 10 namespace win { | |
| 11 | |
| 12 HMODULE GetMetroModule() { | |
| 13 const HMODULE kUninitialized = reinterpret_cast<HMODULE>(1); | |
| 14 static HMODULE metro_module = kUninitialized; | |
| 15 | |
| 16 if (metro_module == kUninitialized) { | |
| 17 // Initialize the cache, note that the initialization is idempotent | |
| 18 // under the assumption that metro_driver is never unloaded, so the | |
| 19 // race to this assignment is safe. | |
| 20 metro_module = GetModuleHandleA("metro_driver.dll"); | |
| 21 if (metro_module != NULL) { | |
| 22 // This must be a metro process if the metro_driver is loaded. | |
| 23 DCHECK(IsMetroProcess()); | |
| 24 } | |
| 25 } | |
| 26 | |
| 27 DCHECK(metro_module != kUninitialized); | |
| 28 return metro_module; | |
| 29 } | |
| 30 | |
| 31 bool IsMetroProcess() { | |
| 32 enum ImmersiveState { | |
| 33 kImmersiveUnknown, | |
| 34 kImmersiveTrue, | |
| 35 kImmersiveFalse | |
| 36 }; | |
| 37 // The immersive state of a process can never change. | |
| 38 // Look it up once and cache it here. | |
| 39 static ImmersiveState state = kImmersiveUnknown; | |
| 40 | |
| 41 if (state == kImmersiveUnknown) { | |
| 42 if (IsProcessImmersive(::GetCurrentProcess())) { | |
| 43 state = kImmersiveTrue; | |
| 44 } else { | |
| 45 state = kImmersiveFalse; | |
| 46 } | |
| 47 } | |
| 48 DCHECK_NE(kImmersiveUnknown, state); | |
| 49 return state == kImmersiveTrue; | |
| 50 } | |
| 51 | |
| 52 bool IsProcessImmersive(HANDLE process) { | |
| 53 typedef BOOL (WINAPI* IsImmersiveProcessFunc)(HANDLE process); | |
| 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) | |
| 62 return is_immersive_process(process) ? true: false; | |
| 63 return false; | |
| 64 } | |
| 65 | |
| 66 wchar_t* LocalAllocAndCopyString(const string16& src) { | |
| 67 size_t dest_size = (src.length() + 1) * sizeof(wchar_t); | |
| 68 wchar_t* dest = reinterpret_cast<wchar_t*>(LocalAlloc(LPTR, dest_size)); | |
| 69 base::wcslcpy(dest, src.c_str(), dest_size); | |
| 70 return dest; | |
| 71 } | |
| 72 | |
| 73 // Metro driver exports for getting the launch type, initial url, initial | |
| 74 // search term, etc. | |
| 75 extern "C" { | |
| 76 typedef const wchar_t* (*GetInitialUrl)(); | |
| 77 typedef const wchar_t* (*GetInitialSearchString)(); | |
| 78 typedef base::win::MetroLaunchType (*GetLaunchType)( | |
| 79 base::win::MetroPreviousExecutionState* previous_state); | |
| 80 } | |
| 81 | |
| 82 MetroLaunchType GetMetroLaunchParams(string16* params) { | |
| 83 HMODULE metro = base::win::GetMetroModule(); | |
| 84 if (!metro) | |
| 85 return base::win::METRO_LAUNCH_ERROR; | |
| 86 | |
| 87 GetLaunchType get_launch_type = reinterpret_cast<GetLaunchType>( | |
| 88 ::GetProcAddress(metro, "GetLaunchType")); | |
| 89 DCHECK(get_launch_type); | |
| 90 | |
| 91 base::win::MetroLaunchType launch_type = get_launch_type(NULL); | |
| 92 | |
| 93 if ((launch_type == base::win::METRO_PROTOCOL) || | |
| 94 (launch_type == base::win::METRO_LAUNCH)) { | |
| 95 GetInitialUrl initial_metro_url = reinterpret_cast<GetInitialUrl>( | |
| 96 ::GetProcAddress(metro, "GetInitialUrl")); | |
| 97 DCHECK(initial_metro_url); | |
| 98 *params = initial_metro_url(); | |
| 99 } else if (launch_type == base::win::METRO_SEARCH) { | |
| 100 GetInitialSearchString initial_search_string = | |
| 101 reinterpret_cast<GetInitialSearchString>( | |
| 102 ::GetProcAddress(metro, "GetInitialSearchString")); | |
| 103 DCHECK(initial_search_string); | |
| 104 *params = initial_search_string(); | |
| 105 } | |
| 106 return launch_type; | |
| 107 } | |
| 108 | |
| 109 } // namespace win | |
| 110 } // namespace base | |
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Chromium Code Reviews
Issue 1446363003:
Deleted OS_WIN and all Windows specific files from base. (Closed)
Base URL: https://github.com/domokit/mojo.git@base_tests