ScaledFontFontconfig.h

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/* -*- 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_SCALEDFONTFONTCONFIG_H_

#define MOZILLA_GFX_SCALEDFONTFONTCONFIG_H_

#include "ScaledFontBase.h"

#include <cairo-ft.h>

namespace mozilla {

namespace gfx {

class NativeFontResourceFontconfig;

class UnscaledFontFontconfig;

class ScaledFontFontconfig : public ScaledFontBase {

 public:

  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(ScaledFontFontconfig, override)

  ScaledFontFontconfig(RefPtr<SharedFTFace>&& aFace, FcPattern* aPattern,

                       const RefPtr<UnscaledFont>& aUnscaledFont, Float aSize);

  FontType GetType() const override { return FontType::FONTCONFIG; }

  SkTypeface* CreateSkTypeface() override;

  void SetupSkFontDrawOptions(SkFont& aFont) override;

  AntialiasMode GetDefaultAAMode() override;

  bool UseSubpixelPosition() const override;

  bool CanSerialize() override { return true; }

  bool MayUseBitmaps() override;

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

  bool GetWRFontInstanceOptions(

      Maybe<wr::FontInstanceOptions>* aOutOptions,

      Maybe<wr::FontInstancePlatformOptions>* aOutPlatformOptions,

      std::vector<FontVariation>* aOutVariations) override;

  bool HasVariationSettings() override;

 protected:

  cairo_font_face_t* CreateCairoFontFace(

      cairo_font_options_t* aFontOptions) override;

 private:

  friend class NativeFontResourceFontconfig;

  friend class UnscaledFontFontconfig;

  struct InstanceData {

    enum {

      AUTOHINT = 1 << 0,

      EMBEDDED_BITMAP = 1 << 1,

      EMBOLDEN = 1 << 2,

      HINT_METRICS = 1 << 3,

      LCD_VERTICAL = 1 << 4,

      SUBPIXEL_BGR = 1 << 5,

};

    explicit InstanceData(FcPattern* aPattern);

    InstanceData(const wr::FontInstanceOptions* aOptions,

                 const wr::FontInstancePlatformOptions* aPlatformOptions);

    void SetupFontOptions(cairo_font_options_t* aFontOptions,

                          int* aOutLoadFlags,

                          unsigned int* aOutSynthFlags) const;

    uint8_t mFlags;

    AntialiasMode mAntialias;

    FontHinting mHinting;

    uint8_t mLcdFilter;

};

  ScaledFontFontconfig(RefPtr<SharedFTFace>&& aFace,

                       const InstanceData& aInstanceData,

                       const RefPtr<UnscaledFont>& aUnscaledFont, Float aSize);

  RefPtr<SharedFTFace> mFace;

  InstanceData mInstanceData;

};

}  // namespace gfx

}  // namespace mozilla

#endif /* MOZILLA_GFX_SCALEDFONTFONTCONFIG_H_ */