зеркало из https://github.com/mozilla/gecko-dev.git
56 строки
2.0 KiB
C++
56 строки
2.0 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsCocoaFeatures_h_
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#define nsCocoaFeatures_h_
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#include <stdint.h>
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/// Note that this class assumes we support the platform we are running on.
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/// For better or worse, if the version is unknown or less than what we
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/// support, we set it to the minimum supported version. GetSystemVersion
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/// is the only call that returns the unadjusted values.
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class nsCocoaFeatures {
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public:
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static int32_t OSXVersion();
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static int32_t OSXVersionMajor();
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static int32_t OSXVersionMinor();
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static int32_t OSXVersionBugFix();
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static bool OnYosemiteOrLater();
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static bool OnElCapitanOrLater();
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static bool OnSierraExactly();
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static bool OnSierraOrLater();
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static bool OnHighSierraOrLater();
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static bool OnMojaveOrLater();
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static bool OnCatalinaOrLater();
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static bool IsAtLeastVersion(int32_t aMajor, int32_t aMinor,
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int32_t aBugFix = 0);
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// These are utilities that do not change or depend on the value of
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// mOSXVersion and instead just encapsulate the encoding algorithm. Note that
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// GetVersion actually adjusts to the lowest supported OS, so it will always
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// return a "supported" version. GetSystemVersion does not make any
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// modifications.
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static void GetSystemVersion(int& aMajor, int& aMinor, int& aBugFix);
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static int32_t GetVersion(int32_t aMajor, int32_t aMinor, int32_t aBugFix);
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static int32_t ExtractMajorVersion(int32_t aVersion);
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static int32_t ExtractMinorVersion(int32_t aVersion);
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static int32_t ExtractBugFixVersion(int32_t aVersion);
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private:
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static void InitializeVersionNumbers();
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static int32_t mOSXVersion;
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};
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// C-callable helper for cairo-quartz-font.c and SkFontHost_mac.cpp
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extern "C" {
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bool Gecko_OnSierraExactly();
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bool Gecko_OnHighSierraOrLater();
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}
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#endif // nsCocoaFeatures_h_
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