gecko-dev/gfx/2d/ScaledFontMac.h

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 http://mozilla.org/MPL/2.0/. */

#ifndef MOZILLA_GFX_SCALEDFONTMAC_H_
#define MOZILLA_GFX_SCALEDFONTMAC_H_

#ifdef MOZ_WIDGET_COCOA
#  include <ApplicationServices/ApplicationServices.h>
#else
#  include <CoreGraphics/CoreGraphics.h>
#  include <CoreText/CoreText.h>
#endif

#include "2D.h"

#include "ScaledFontBase.h"

namespace mozilla {
namespace gfx {

class UnscaledFontMac;

class ScaledFontMac : public ScaledFontBase {
 public:
  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(ScaledFontMac, override)
  ScaledFontMac(CGFontRef aFont, const RefPtr<UnscaledFont>& aUnscaledFont, Float aSize,
                bool aOwnsFont = false, const Color& aFontSmoothingBackgroundColor = Color(),
                bool aUseFontSmoothing = true, bool aApplySyntheticBold = false);
  ~ScaledFontMac();

  FontType GetType() const override { return FontType::MAC; }
#ifdef USE_SKIA
  SkTypeface* CreateSkTypeface() override;
  void SetupSkFontDrawOptions(SkFont& aFont) override;
#endif
  already_AddRefed<Path> GetPathForGlyphs(const GlyphBuffer& aBuffer,
                                          const DrawTarget* aTarget) override;

  bool GetFontInstanceData(FontInstanceDataOutput aCb, void* aBaton) override;

  bool GetWRFontInstanceOptions(Maybe<wr::FontInstanceOptions>* aOutOptions,
                                Maybe<wr::FontInstancePlatformOptions>* aOutPlatformOptions,
                                std::vector<FontVariation>* aOutVariations) override;

  bool CanSerialize() override { return true; }

  Color FontSmoothingBackgroundColor() { return mFontSmoothingBackgroundColor; }

#ifdef USE_CAIRO_SCALED_FONT
  cairo_font_face_t* CreateCairoFontFace(cairo_font_options_t* aFontOptions) override;
#endif

 private:
  friend class DrawTargetSkia;
  friend class UnscaledFontMac;

  CGFontRef mFont;
  CTFontRef mCTFont;  // only created if CTFontDrawGlyphs is available, otherwise null

  Color mFontSmoothingBackgroundColor;
  bool mUseFontSmoothing;
  bool mApplySyntheticBold;

  struct InstanceData {
    explicit InstanceData(ScaledFontMac* aScaledFont)
        : mFontSmoothingBackgroundColor(aScaledFont->mFontSmoothingBackgroundColor),
          mUseFontSmoothing(aScaledFont->mUseFontSmoothing),
          mApplySyntheticBold(aScaledFont->mApplySyntheticBold) {}

    InstanceData(const wr::FontInstanceOptions* aOptions,
                 const wr::FontInstancePlatformOptions* aPlatformOptions);

    Color mFontSmoothingBackgroundColor;
    bool mUseFontSmoothing;
    bool mApplySyntheticBold;
  };

  typedef void(CTFontDrawGlyphsFuncT)(CTFontRef, const CGGlyph[], const CGPoint[], size_t,
                                      CGContextRef);

  static bool sSymbolLookupDone;

 public:
  // function pointer for CTFontDrawGlyphs, if available;
  // initialized the first time a ScaledFontMac is created,
  // so it will be valid by the time DrawTargetCG wants to use it
  static CTFontDrawGlyphsFuncT* CTFontDrawGlyphsPtr;
};

}  // namespace gfx
}  // namespace mozilla

#endif /* MOZILLA_GFX_SCALEDFONTMAC_H_ */