ScaledFontDWrite.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_SCALEDFONTDWRITE_H_

#define MOZILLA_GFX_SCALEDFONTDWRITE_H_

#include <dwrite.h>

#include "DWriteSettings.h"

#include "ScaledFontBase.h"

struct ID2D1GeometrySink;

struct gfxFontStyle;

namespace mozilla {

namespace gfx {

class NativeFontResourceDWrite;

class UnscaledFontDWrite;

class ScaledFontDWrite final : public ScaledFontBase {

 public:

  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(ScaledFontDWrite, override)

  ScaledFontDWrite(IDWriteFontFace* aFontFace,

                   const RefPtr<UnscaledFont>& aUnscaledFont, Float aSize,

                   bool aUseEmbeddedBitmap, bool aUseMultistrikeBold,

                   bool aGDIForced, const gfxFontStyle* aStyle);

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

  already_AddRefed<Path> GetPathForGlyphs(const GlyphBuffer& aBuffer,

                                          const DrawTarget* aTarget) override;

  void CopyGlyphsToBuilder(const GlyphBuffer& aBuffer, PathBuilder* aBuilder,

                           const Matrix* aTransformHint) override;

  void CopyGlyphsToSink(const GlyphBuffer& aBuffer,

                        ID2D1SimplifiedGeometrySink* aSink);

  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;

  DWriteSettings& DWriteSettings() const;

  AntialiasMode GetDefaultAAMode() override;

  bool UseEmbeddedBitmaps() const { return mUseEmbeddedBitmap; }

  bool UseMultistrikeBold() const { return mUseMultistrikeBold; }

  bool ForceGDIMode() const { return mGDIForced; }

  bool UseSubpixelPosition() const override { return !ForceGDIMode(); }

  bool HasBoldSimulation() const {

    return (mFontFace->GetSimulations() & DWRITE_FONT_SIMULATIONS_BOLD) != 0;

  bool HasVariationSettings() override;

  SkTypeface* CreateSkTypeface() override;

  void SetupSkFontDrawOptions(SkFont& aFont) override;

  SkFontStyle mStyle;

  RefPtr<IDWriteFontFace> mFontFace;

  bool mUseEmbeddedBitmap;

  bool mUseMultistrikeBold = false;

  bool mGDIForced = false;

  cairo_font_face_t* CreateCairoFontFace(

      cairo_font_options_t* aFontOptions) override;

  void PrepareCairoScaledFont(cairo_scaled_font_t* aFont) override;

 private:

  friend class NativeFontResourceDWrite;

  friend class UnscaledFontDWrite;

  struct InstanceData {

    explicit InstanceData(ScaledFontDWrite* aScaledFont)

        : mUseEmbeddedBitmap(aScaledFont->mUseEmbeddedBitmap),

          mUseBoldSimulation(aScaledFont->HasBoldSimulation()),

          mUseMultistrikeBold(aScaledFont->UseMultistrikeBold()),

          mGDIForced(aScaledFont->mGDIForced) {}

    InstanceData(const wr::FontInstanceOptions* aOptions,

                 const wr::FontInstancePlatformOptions* aPlatformOptions);

    bool mUseEmbeddedBitmap = false;

    bool mUseBoldSimulation = false;

    bool mUseMultistrikeBold = false;

    bool mGDIForced = false;

};

};

}  // namespace gfx

}  // namespace mozilla

#endif /* MOZILLA_GFX_SCALEDFONTDWRITE_H_ */