author Jan de Mooij <>
Mon, 27 Sep 2021 11:15:49 +0000
changeset 593265 5144ad09cfb7011b98c5422b78b82936b1343541
parent 589939 9bc9e1b66b201a17b74fee857c7dc43c2ad4aa9f
permissions -rw-r--r--
Bug 1732281 part 2 - Transpile ValueToIteratorResult in Warp. r=iain Depends on D126514 Differential Revision:

/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at */


#include "nsTArrayForwardDeclare.h"
#include "gfxPlatform.h"
#include "mozilla/LookAndFeel.h"

namespace mozilla {
namespace gfx {
class DrawTarget;
class VsyncSource;
}  // namespace gfx
}  // namespace mozilla

class gfxPlatformMac : public gfxPlatform {
  virtual ~gfxPlatformMac();

  // Call early in startup to register the macOS supplemental language fonts
  // so that they're usable by the browser. This is intended to be called as
  // early as possible, before most services etc are initialized; it starts
  // a separate thread to register the fonts, because this is quite slow.
  static void RegisterSupplementalFonts();

  // Call from the main thread at the point where we need to start using the
  // font list; this will wait (if necessary) for the registration thread to
  // finish.
  static void WaitForFontRegistration();

  static gfxPlatformMac* GetPlatform() {
    return (gfxPlatformMac*)gfxPlatform::GetPlatform();

  bool UsesTiling() const override;

  already_AddRefed<gfxASurface> CreateOffscreenSurface(
      const IntSize& aSize, gfxImageFormat aFormat) override;

  bool CreatePlatformFontList() override;

  void ReadSystemFontList(mozilla::dom::SystemFontList* aFontList) override;

  bool IsFontFormatSupported(uint32_t aFormatFlags) override;

  void GetCommonFallbackFonts(uint32_t aCh, Script aRunScript,
                              eFontPresentation aPresentation,
                              nsTArray<const char*>& aFontList) override;

  // lookup the system font for a particular system font type and set
  // the name and style characteristics
  static void LookupSystemFont(mozilla::LookAndFeel::FontID aSystemFontID,
                               nsACString& aSystemFontName,
                               gfxFontStyle& aFontStyle);

  bool SupportsApzWheelInput() const override { return true; }

  bool RespectsFontStyleSmoothing() const override {
    // gfxMacFont respects the font smoothing hint.
    return true;

  bool RequiresAcceleratedGLContextForCompositorOGL() const override {
    // On OS X in a VM, unaccelerated CompositorOGL shows black flashes, so we
    // require accelerated GL for CompositorOGL but allow unaccelerated GL for
    // BasicCompositor.
    return true;

  already_AddRefed<mozilla::gfx::VsyncSource> CreateHardwareVsyncSource()

  // lower threshold on font anti-aliasing
  uint32_t GetAntiAliasingThreshold() { return mFontAntiAliasingThreshold; }

  bool AccelerateLayersByDefault() override;

  BackendPrefsData GetBackendPrefs() const override;

  bool CheckVariationFontSupport() override;

  void InitPlatformGPUProcessPrefs() override;

  nsTArray<uint8_t> GetPlatformCMSOutputProfileData() override;

  // read in the pref value for the lower threshold on font anti-aliasing
  static uint32_t ReadAntiAliasingThreshold();

  uint32_t mFontAntiAliasingThreshold;

  static PRThread* sFontRegistrationThread;

#endif /* GFX_PLATFORM_MAC_H */