DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Implementation

Mercurial (b6d82b1a6b02)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118
/* -*- 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 "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* aFont,
                   const RefPtr<UnscaledFont>& aUnscaledFont, Float aSize)
      : ScaledFontBase(aUnscaledFont, aSize),
        mFontFace(aFont),
        mUseEmbeddedBitmap(false),
        mRenderingMode(DWRITE_RENDERING_MODE_DEFAULT),
        mGamma(2.2f),
        mContrast(1.0f) {}

  ScaledFontDWrite(IDWriteFontFace* aFontFace,
                   const RefPtr<UnscaledFont>& aUnscaledFont, Float aSize,
                   bool aUseEmbeddedBitmap,
                   DWRITE_RENDERING_MODE aRenderingMode,
                   IDWriteRenderingParams* aParams, Float aGamma,
                   Float aContrast, const gfxFontStyle* aStyle = nullptr);

  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);

  void GetGlyphDesignMetrics(const uint16_t* aGlyphIndices, uint32_t aNumGlyphs,
                             GlyphMetrics* aGlyphMetrics) override;

  bool CanSerialize() override { return true; }

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

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

  AntialiasMode GetDefaultAAMode() override;

  bool UseEmbeddedBitmaps() const { return mUseEmbeddedBitmap; }
  bool ForceGDIMode() const {
    return mRenderingMode == DWRITE_RENDERING_MODE_GDI_CLASSIC;
  }
  DWRITE_RENDERING_MODE GetRenderingMode() const { return mRenderingMode; }

#ifdef USE_SKIA
  SkTypeface* CreateSkTypeface() override;
  SkFontStyle mStyle;
#endif

  RefPtr<IDWriteFontFace> mFontFace;
  bool mUseEmbeddedBitmap;
  DWRITE_RENDERING_MODE mRenderingMode;
  // DrawTargetD2D1 requires the IDWriteRenderingParams,
  // but we also separately need to store the gamma and contrast
  // since Skia needs to be able to access these without having
  // to use the full set of DWrite parameters (which would be
  // required to recreate an IDWriteRenderingParams) in a
  // DrawTargetRecording playback.
  RefPtr<IDWriteRenderingParams> mParams;
  Float mGamma;
  Float mContrast;

 protected:
#ifdef USE_CAIRO_SCALED_FONT
  cairo_font_face_t* GetCairoFontFace() override;
#endif

 private:
  friend class NativeFontResourceDWrite;
  friend class UnscaledFontDWrite;

  struct InstanceData {
    explicit InstanceData(ScaledFontDWrite* aScaledFont)
        : mUseEmbeddedBitmap(aScaledFont->mUseEmbeddedBitmap),
          mRenderingMode(aScaledFont->mRenderingMode),
          mGamma(aScaledFont->mGamma),
          mContrast(aScaledFont->mContrast) {}

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

    bool mUseEmbeddedBitmap;
    DWRITE_RENDERING_MODE mRenderingMode;
    Float mGamma;
    Float mContrast;
  };
};

}  // namespace gfx
}  // namespace mozilla

#endif /* MOZILLA_GFX_SCALEDFONTDWRITE_H_ */