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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 <stddef.h> | |
| 8 | |
| 9 #include "base/strings/string_util.h" | |
| 10 #include "base/win/windows_version.h" | |
| 11 | |
| 12 namespace base { | |
| 13 namespace win { | |
| 14 | |
| 15 bool IsChromeMetroSupported() { | |
| 16 const Version win_version = GetVersion(); | |
| 17 return win_version >= VERSION_WIN8 && win_version < VERSION_WIN10; | |
| 18 } | |
| 19 | |
| 20 HMODULE GetMetroModule() { | |
| 21 const HMODULE kUninitialized = reinterpret_cast<HMODULE>(1); | |
| 22 static HMODULE metro_module = kUninitialized; | |
| 23 | |
| 24 if (metro_module == kUninitialized) { | |
| 25 // Initialize the cache, note that the initialization is idempotent | |
| 26 // under the assumption that metro_driver is never unloaded, so the | |
| 27 // race to this assignment is safe. | |
| 28 metro_module = GetModuleHandleA("metro_driver.dll"); | |
| 29 if (metro_module != NULL) { | |
| 30 // This must be a metro process if the metro_driver is loaded. | |
| 31 DCHECK(IsMetroProcess()); | |
| 32 } | |
| 33 } | |
| 34 | |
| 35 DCHECK(metro_module != kUninitialized); | |
| 36 return metro_module; | |
| 37 } | |
| 38 | |
| 39 bool IsMetroProcess() { | |
| 40 enum ImmersiveState { | |
| 41 kImmersiveUnknown, | |
| 42 kImmersiveTrue, | |
| 43 kImmersiveFalse | |
| 44 }; | |
| 45 // The immersive state of a process can never change. | |
| 46 // Look it up once and cache it here. | |
| 47 static ImmersiveState state = kImmersiveUnknown; | |
| 48 | |
| 49 if (state == kImmersiveUnknown) { | |
| 50 if (IsProcessImmersive(::GetCurrentProcess())) { | |
| 51 state = kImmersiveTrue; | |
| 52 } else { | |
| 53 state = kImmersiveFalse; | |
| 54 } | |
| 55 } | |
| 56 DCHECK_NE(kImmersiveUnknown, state); | |
| 57 return state == kImmersiveTrue; | |
| 58 } | |
| 59 | |
| 60 bool IsProcessImmersive(HANDLE process) { | |
| 61 typedef BOOL (WINAPI* IsImmersiveProcessFunc)(HANDLE process); | |
| 62 HMODULE user32 = ::GetModuleHandleA("user32.dll"); | |
| 63 DCHECK(user32 != NULL); | |
| 64 | |
| 65 IsImmersiveProcessFunc is_immersive_process = | |
| 66 reinterpret_cast<IsImmersiveProcessFunc>( | |
| 67 ::GetProcAddress(user32, "IsImmersiveProcess")); | |
| 68 | |
| 69 if (is_immersive_process) | |
| 70 return is_immersive_process(process) ? true: false; | |
| 71 return false; | |
| 72 } | |
| 73 | |
| 74 wchar_t* LocalAllocAndCopyString(const string16& src) { | |
| 75 size_t dest_size = (src.length() + 1) * sizeof(wchar_t); | |
| 76 wchar_t* dest = reinterpret_cast<wchar_t*>(LocalAlloc(LPTR, dest_size)); | |
| 77 base::wcslcpy(dest, src.c_str(), dest_size); | |
| 78 return dest; | |
| 79 } | |
| 80 | |
| 81 // Metro driver exports for getting the launch type, initial url, initial | |
| 82 // search term, etc. | |
| 83 extern "C" { | |
| 84 typedef const wchar_t* (*GetInitialUrl)(); | |
| 85 typedef const wchar_t* (*GetInitialSearchString)(); | |
| 86 typedef base::win::MetroLaunchType (*GetLaunchType)( | |
| 87 base::win::MetroPreviousExecutionState* previous_state); | |
| 88 } | |
| 89 | |
| 90 MetroLaunchType GetMetroLaunchParams(string16* params) { | |
| 91 HMODULE metro = base::win::GetMetroModule(); | |
| 92 if (!metro) | |
| 93 return base::win::METRO_LAUNCH_ERROR; | |
| 94 | |
| 95 GetLaunchType get_launch_type = reinterpret_cast<GetLaunchType>( | |
| 96 ::GetProcAddress(metro, "GetLaunchType")); | |
| 97 DCHECK(get_launch_type); | |
| 98 | |
| 99 base::win::MetroLaunchType launch_type = get_launch_type(NULL); | |
| 100 | |
| 101 if ((launch_type == base::win::METRO_PROTOCOL) || | |
| 102 (launch_type == base::win::METRO_LAUNCH)) { | |
| 103 GetInitialUrl initial_metro_url = reinterpret_cast<GetInitialUrl>( | |
| 104 ::GetProcAddress(metro, "GetInitialUrl")); | |
| 105 DCHECK(initial_metro_url); | |
| 106 *params = initial_metro_url(); | |
| 107 } else if (launch_type == base::win::METRO_SEARCH) { | |
| 108 GetInitialSearchString initial_search_string = | |
| 109 reinterpret_cast<GetInitialSearchString>( | |
| 110 ::GetProcAddress(metro, "GetInitialSearchString")); | |
| 111 DCHECK(initial_search_string); | |
| 112 *params = initial_search_string(); | |
| 113 } | |
| 114 return launch_type; | |
| 115 } | |
| 116 | |
| 117 } // namespace win | |
| 118 } // namespace base | |
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Chromium Code Reviews
Issue 1581473002:
Remove base/win/metro.{cc|h} and some associated code (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master