accessible/src/windows/msaa/Compatibility.cpp@b8a032363ba2 (annotated)
accessible/src/windows/msaa/Compatibility.cpp
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* vim: set ts=2 et sw=2 tw=80: */ |
| michael@0 | 3 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 4 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 5 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 6 | |
| michael@0 | 7 | #include "Compatibility.h" |
| michael@0 | 8 | |
| michael@0 | 9 | #include "nsWinUtils.h" |
| michael@0 | 10 | #include "Statistics.h" |
| michael@0 | 11 | |
| michael@0 | 12 | #include "mozilla/Preferences.h" |
| michael@0 | 13 | |
| michael@0 | 14 | using namespace mozilla; |
| michael@0 | 15 | using namespace mozilla::a11y; |
| michael@0 | 16 | |
| michael@0 | 17 | /** |
| michael@0 | 18 | * Return true if module version is lesser than the given version. |
| michael@0 | 19 | */ |
| michael@0 | 20 | bool |
| michael@0 | 21 | IsModuleVersionLessThan(HMODULE aModuleHandle, DWORD aMajor, DWORD aMinor) |
| michael@0 | 22 | { |
| michael@0 | 23 | wchar_t fileName[MAX_PATH]; |
| michael@0 | 24 | ::GetModuleFileNameW(aModuleHandle, fileName, MAX_PATH); |
| michael@0 | 25 | |
| michael@0 | 26 | DWORD dummy = 0; |
| michael@0 | 27 | DWORD length = ::GetFileVersionInfoSizeW(fileName, &dummy); |
| michael@0 | 28 | |
| michael@0 | 29 | LPBYTE versionInfo = new BYTE[length]; |
| michael@0 | 30 | ::GetFileVersionInfoW(fileName, 0, length, versionInfo); |
| michael@0 | 31 | |
| michael@0 | 32 | UINT uLen; |
| michael@0 | 33 | VS_FIXEDFILEINFO* fixedFileInfo = nullptr; |
| michael@0 | 34 | ::VerQueryValueW(versionInfo, L"\\", (LPVOID*)&fixedFileInfo, &uLen); |
| michael@0 | 35 | DWORD dwFileVersionMS = fixedFileInfo->dwFileVersionMS; |
| michael@0 | 36 | DWORD dwFileVersionLS = fixedFileInfo->dwFileVersionLS; |
| michael@0 | 37 | delete [] versionInfo; |
| michael@0 | 38 | |
| michael@0 | 39 | DWORD dwLeftMost = HIWORD(dwFileVersionMS); |
| michael@0 | 40 | DWORD dwSecondRight = HIWORD(dwFileVersionLS); |
| michael@0 | 41 | return (dwLeftMost < aMajor || |
| michael@0 | 42 | (dwLeftMost == aMajor && dwSecondRight < aMinor)); |
| michael@0 | 43 | } |
| michael@0 | 44 | |
| michael@0 | 45 | |
| michael@0 | 46 | //////////////////////////////////////////////////////////////////////////////// |
| michael@0 | 47 | // Compatibility |
| michael@0 | 48 | //////////////////////////////////////////////////////////////////////////////// |
| michael@0 | 49 | |
| michael@0 | 50 | uint32_t Compatibility::sConsumers = Compatibility::UNKNOWN; |
| michael@0 | 51 | |
| michael@0 | 52 | void |
| michael@0 | 53 | Compatibility::Init() |
| michael@0 | 54 | { |
| michael@0 | 55 | // Note we collect some AT statistics/telemetry here for convenience. |
| michael@0 | 56 | |
| michael@0 | 57 | HMODULE jawsHandle = ::GetModuleHandleW(L"jhook"); |
| michael@0 | 58 | if (jawsHandle) |
| michael@0 | 59 | sConsumers |= (IsModuleVersionLessThan(jawsHandle, 8, 2173)) ? |
| michael@0 | 60 | OLDJAWS : JAWS; |
| michael@0 | 61 | |
| michael@0 | 62 | if (::GetModuleHandleW(L"gwm32inc")) |
| michael@0 | 63 | sConsumers |= WE; |
| michael@0 | 64 | |
| michael@0 | 65 | if (::GetModuleHandleW(L"dolwinhk")) |
| michael@0 | 66 | sConsumers |= DOLPHIN; |
| michael@0 | 67 | |
| michael@0 | 68 | if (::GetModuleHandleW(L"STSA32")) |
| michael@0 | 69 | sConsumers |= SEROTEK; |
| michael@0 | 70 | |
| michael@0 | 71 | if (::GetModuleHandleW(L"nvdaHelperRemote")) |
| michael@0 | 72 | sConsumers |= NVDA; |
| michael@0 | 73 | |
| michael@0 | 74 | if (::GetModuleHandleW(L"OsmHooks")) |
| michael@0 | 75 | sConsumers |= COBRA; |
| michael@0 | 76 | |
| michael@0 | 77 | if (::GetModuleHandleW(L"WebFinderRemote")) |
| michael@0 | 78 | sConsumers |= ZOOMTEXT; |
| michael@0 | 79 | |
| michael@0 | 80 | if (::GetModuleHandleW(L"Kazahook")) |
| michael@0 | 81 | sConsumers |= KAZAGURU; |
| michael@0 | 82 | |
| michael@0 | 83 | if (::GetModuleHandleW(L"TextExtractorImpl32") || |
| michael@0 | 84 | ::GetModuleHandleW(L"TextExtractorImpl64")) |
| michael@0 | 85 | sConsumers |= YOUDAO; |
| michael@0 | 86 | |
| michael@0 | 87 | if (::GetModuleHandleW(L"uiautomation") || |
| michael@0 | 88 | ::GetModuleHandleW(L"uiautomationcore")) |
| michael@0 | 89 | sConsumers |= UIAUTOMATION; |
| michael@0 | 90 | |
| michael@0 | 91 | // If we have a known consumer remove the unknown bit. |
| michael@0 | 92 | if (sConsumers != Compatibility::UNKNOWN) |
| michael@0 | 93 | sConsumers ^= Compatibility::UNKNOWN; |
| michael@0 | 94 | |
| michael@0 | 95 | // Gather telemetry |
| michael@0 | 96 | uint32_t temp = sConsumers; |
| michael@0 | 97 | for (int i = 0; temp; i++) { |
| michael@0 | 98 | if (temp & 0x1) |
| michael@0 | 99 | statistics::A11yConsumers(i); |
| michael@0 | 100 | |
| michael@0 | 101 | temp >>= 1; |
| michael@0 | 102 | } |
| michael@0 | 103 | |
| michael@0 | 104 | // Turn off new tab switching for Jaws and WE. |
| michael@0 | 105 | if (sConsumers & (JAWS | OLDJAWS | WE)) { |
| michael@0 | 106 | // Check to see if the pref for disallowing CtrlTab is already set. If so, |
| michael@0 | 107 | // bail out (respect the user settings). If not, set it. |
| michael@0 | 108 | if (!Preferences::HasUserValue("browser.ctrlTab.disallowForScreenReaders")) |
| michael@0 | 109 | Preferences::SetBool("browser.ctrlTab.disallowForScreenReaders", true); |
| michael@0 | 110 | } |
| michael@0 | 111 | } |
| michael@0 | 112 |
