gfx/thebes/gfxPlatformMac.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 GFX_PLATFORM_MAC_H
   7 #define GFX_PLATFORM_MAC_H
   8
   9 #include "nsTArrayForwardDeclare.h"
  10 #include "gfxPlatform.h"
  11 #include "mozilla/LookAndFeel.h"
  12
  13 namespace mozilla {
  14 namespace gfx {
  15 class DrawTarget;
  16 class VsyncSource;
  17 }  // namespace gfx
  18 }  // namespace mozilla
  19
  20 class gfxPlatformMac : public gfxPlatform {
  21  public:
  22   gfxPlatformMac();
  23   virtual ~gfxPlatformMac();
  24
  25   // Call early in startup to register the macOS supplemental language fonts
  26   // so that they're usable by the browser. This is intended to be called as
  27   // early as possible, before most services etc are initialized; it starts
  28   // a separate thread to register the fonts, because this is quite slow.
  29   static void RegisterSupplementalFonts();
  30
  31   // Call from the main thread at the point where we need to start using the
  32   // font list; this will wait (if necessary) for the registration thread to
  33   // finish.
  34   static void WaitForFontRegistration();
  35
  36   static gfxPlatformMac* GetPlatform() {
  37     return (gfxPlatformMac*)gfxPlatform::GetPlatform();
  38   }
  39
  40   already_AddRefed<gfxASurface> CreateOffscreenSurface(
  41       const IntSize& aSize, gfxImageFormat aFormat) override;
  42
  43   bool CreatePlatformFontList() override;
  44
  45   void ReadSystemFontList(mozilla::dom::SystemFontList* aFontList) override;
  46
  47   void GetCommonFallbackFonts(uint32_t aCh, Script aRunScript,
  48                               eFontPresentation aPresentation,
  49                               nsTArray<const char*>& aFontList) override;
  50
  51   // lookup the system font for a particular system font type and set
  52   // the name and style characteristics
  53   static void LookupSystemFont(mozilla::LookAndFeel::FontID aSystemFontID,
  54                                nsACString& aSystemFontName,
  55                                gfxFontStyle& aFontStyle);
  56
  57   bool SupportsApzWheelInput() const override { return true; }
  58
  59   bool RespectsFontStyleSmoothing() const override {
  60     // gfxMacFont respects the font smoothing hint.
  61     return true;
  62   }
  63
  64   bool RequiresAcceleratedGLContextForCompositorOGL() const override {
  65     // On OS X in a VM, unaccelerated CompositorOGL shows black flashes, so we
  66     // require accelerated GL for CompositorOGL but allow unaccelerated GL for
  67     // BasicCompositor.
  68     return true;
  69   }
  70
  71   already_AddRefed<mozilla::gfx::VsyncSource> CreateGlobalHardwareVsyncSource()
  72       override;
  73
  74   // lower threshold on font anti-aliasing
  75   uint32_t GetAntiAliasingThreshold() { return mFontAntiAliasingThreshold; }
  76
  77   static bool CheckVariationFontSupport();
  78
  79  protected:
  80   bool AccelerateLayersByDefault() override;
  81
  82   BackendPrefsData GetBackendPrefs() const override;
  83
  84   void InitPlatformGPUProcessPrefs() override;
  85
  86  private:
  87   nsTArray<uint8_t> GetPlatformCMSOutputProfileData() override;
  88
  89   // read in the pref value for the lower threshold on font anti-aliasing
  90   static uint32_t ReadAntiAliasingThreshold();
  91
  92   static void FontRegistrationCallback(void* aUnused);
  93
  94   uint32_t mFontAntiAliasingThreshold;
  95
  96   static PRThread* sFontRegistrationThread;
  97 };
  98
  99 #endif /* GFX_PLATFORM_MAC_H */