widget/cocoa/nsCocoaFeatures.h

   1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef nsCocoaFeatures_h_
   7 #define nsCocoaFeatures_h_
   8
   9 #include <stdint.h>
  10
  11 /// Note that this class assumes we support the platform we are running on.
  12 /// For better or worse, if the version is unknown or less than what we
  13 /// support, we set it to the minimum supported version. GetSystemVersion
  14 /// is the only call that returns the unadjusted values.
  15 class nsCocoaFeatures {
  16  public:
  17   static int32_t macOSVersion();
  18   static int32_t macOSVersionMajor();
  19   static int32_t macOSVersionMinor();
  20   static int32_t macOSVersionBugFix();
  21   static bool OnSierraExactly();
  22   static bool OnHighSierraOrLater();
  23   static bool OnMojaveOrLater();
  24   static bool OnCatalinaOrLater();
  25   static bool OnBigSurOrLater();
  26   static bool OnMontereyOrLater();
  27
  28   static bool IsAtLeastVersion(int32_t aMajor, int32_t aMinor,
  29                                int32_t aBugFix = 0);
  30
  31   static bool ProcessIsRosettaTranslated();
  32
  33   // These are utilities that do not change or depend on the value of
  34   // mOSVersion and instead just encapsulate the encoding algorithm. Note that
  35   // GetVersion actually adjusts to the lowest supported OS, so it will always
  36   // return a "supported" version. GetSystemVersion does not make any
  37   // modifications.
  38   static void GetSystemVersion(int& aMajor, int& aMinor, int& aBugFix);
  39   static int32_t GetVersion(int32_t aMajor, int32_t aMinor, int32_t aBugFix);
  40   static int32_t ExtractMajorVersion(int32_t aVersion);
  41   static int32_t ExtractMinorVersion(int32_t aVersion);
  42   static int32_t ExtractBugFixVersion(int32_t aVersion);
  43
  44  private:
  45   nsCocoaFeatures() = delete;  // Prevent instantiation.
  46   static void InitializeVersionNumbers();
  47
  48   static int32_t mOSVersion;
  49 };
  50
  51 // C-callable helper for cairo-quartz-font.c and SkFontHost_mac.cpp
  52 extern "C" {
  53 bool Gecko_OnSierraExactly();
  54 }
  55
  56 #endif  // nsCocoaFeatures_h_