gfx/thebes/gfxPlatformMac.h

   1 /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
   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     static gfxPlatformMac *GetPlatform() {
  26         return (gfxPlatformMac*) gfxPlatform::GetPlatform();
  27     }
  28
  29     bool UsesTiling() const override;
  30
  31     virtual already_AddRefed<gfxASurface>
  32       CreateOffscreenSurface(const IntSize& aSize,
  33                              gfxImageFormat aFormat) override;
  34
  35     gfxFontGroup*
  36     CreateFontGroup(const mozilla::FontFamilyList& aFontFamilyList,
  37                     const gfxFontStyle *aStyle,
  38                     gfxTextPerfMetrics* aTextPerf,
  39                     gfxUserFontSet *aUserFontSet,
  40                     gfxFloat aDevToCssSize) override;
  41
  42     virtual gfxPlatformFontList* CreatePlatformFontList() override;
  43
  44     void
  45     ReadSystemFontList(InfallibleTArray<mozilla::dom::SystemFontListEntry>*
  46                        aFontList) override;
  47
  48     bool IsFontFormatSupported(uint32_t aFormatFlags) override;
  49
  50     virtual void GetCommonFallbackFonts(uint32_t aCh, uint32_t aNextCh,
  51                                         Script aRunScript,
  52                                         nsTArray<const char*>& aFontList) override;
  53
  54     // lookup the system font for a particular system font type and set
  55     // the name and style characteristics
  56     static void
  57     LookupSystemFont(mozilla::LookAndFeel::FontID aSystemFontID,
  58                      nsAString& aSystemFontName,
  59                      gfxFontStyle &aFontStyle,
  60                      float aDevPixPerCSSPixel);
  61
  62     virtual bool SupportsApzWheelInput() const override {
  63       return true;
  64     }
  65
  66     bool RespectsFontStyleSmoothing() const override {
  67       // gfxMacFont respects the font smoothing hint.
  68       return true;
  69     }
  70
  71     bool RequiresAcceleratedGLContextForCompositorOGL() const override {
  72       // On OS X in a VM, unaccelerated CompositorOGL shows black flashes, so we
  73       // require accelerated GL for CompositorOGL but allow unaccelerated GL for
  74       // BasicCompositor.
  75       return true;
  76     }
  77
  78     virtual already_AddRefed<mozilla::gfx::VsyncSource> CreateHardwareVsyncSource() override;
  79
  80     // lower threshold on font anti-aliasing
  81     uint32_t GetAntiAliasingThreshold() { return mFontAntiAliasingThreshold; }
  82
  83 protected:
  84     bool AccelerateLayersByDefault() override;
  85
  86     BackendPrefsData GetBackendPrefs() override;
  87
  88 private:
  89     virtual void GetPlatformCMSOutputProfile(void* &mem, size_t &size) override;
  90
  91     // read in the pref value for the lower threshold on font anti-aliasing
  92     static uint32_t ReadAntiAliasingThreshold();
  93
  94     uint32_t mFontAntiAliasingThreshold;
  95 };
  96
  97 #endif /* GFX_PLATFORM_MAC_H */