tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
Log | Files | Refs | README | LICENSE

ScaledFontDWrite.h (3137B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #ifndef MOZILLA_GFX_SCALEDFONTDWRITE_H_
      8 #define MOZILLA_GFX_SCALEDFONTDWRITE_H_
      9 
     10 #include <dwrite.h>
     11 #include "DWriteSettings.h"
     12 #include "ScaledFontBase.h"
     13 
     14 struct gfxFontStyle;
     15 
     16 namespace mozilla {
     17 namespace gfx {
     18 
     19 class NativeFontResourceDWrite;
     20 class UnscaledFontDWrite;
     21 
     22 class ScaledFontDWrite final : public ScaledFontBase {
     23 public:
     24  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(ScaledFontDWrite, override)
     25  ScaledFontDWrite(IDWriteFontFace* aFontFace,
     26                   const RefPtr<UnscaledFont>& aUnscaledFont, Float aSize,
     27                   bool aUseEmbeddedBitmap, bool aUseMultistrikeBold,
     28                   bool aGDIForced, const gfxFontStyle* aStyle);
     29 
     30  FontType GetType() const override { return FontType::DWRITE; }
     31 
     32  bool CanSerialize() override { return true; }
     33 
     34  bool MayUseBitmaps() override;
     35 
     36  bool GetFontInstanceData(FontInstanceDataOutput aCb, void* aBaton) override;
     37 
     38  bool GetWRFontInstanceOptions(
     39      Maybe<wr::FontInstanceOptions>* aOutOptions,
     40      Maybe<wr::FontInstancePlatformOptions>* aOutPlatformOptions,
     41      std::vector<FontVariation>* aOutVariations) override;
     42 
     43  DWriteSettings& DWriteSettings() const;
     44 
     45  AntialiasMode GetDefaultAAMode() override;
     46 
     47  bool UseEmbeddedBitmaps() const { return mUseEmbeddedBitmap; }
     48  bool UseMultistrikeBold() const { return mUseMultistrikeBold; }
     49  bool ForceGDIMode() const { return mGDIForced; }
     50 
     51  bool UseSubpixelPosition() const override { return !ForceGDIMode(); }
     52 
     53  bool HasBoldSimulation() const {
     54    return (mFontFace->GetSimulations() & DWRITE_FONT_SIMULATIONS_BOLD) != 0;
     55  }
     56 
     57  bool HasVariationSettings() override;
     58 
     59  SkTypeface* CreateSkTypeface() override;
     60  void SetupSkFontDrawOptions(SkFont& aFont) override;
     61  SkFontStyle mStyle;
     62 
     63  RefPtr<IDWriteFontFace> mFontFace;
     64  bool mUseEmbeddedBitmap;
     65  bool mUseMultistrikeBold = false;
     66  bool mGDIForced = false;
     67 
     68  cairo_font_face_t* CreateCairoFontFace(
     69      cairo_font_options_t* aFontOptions) override;
     70  void PrepareCairoScaledFont(cairo_scaled_font_t* aFont) override;
     71 
     72 private:
     73  friend class NativeFontResourceDWrite;
     74  friend class UnscaledFontDWrite;
     75 
     76  struct InstanceData {
     77    explicit InstanceData(ScaledFontDWrite* aScaledFont)
     78        : mUseEmbeddedBitmap(aScaledFont->mUseEmbeddedBitmap),
     79          mUseBoldSimulation(aScaledFont->HasBoldSimulation()),
     80          mUseMultistrikeBold(aScaledFont->UseMultistrikeBold()),
     81          mGDIForced(aScaledFont->mGDIForced) {}
     82 
     83    InstanceData(const wr::FontInstanceOptions* aOptions,
     84                 const wr::FontInstancePlatformOptions* aPlatformOptions);
     85 
     86    bool mUseEmbeddedBitmap = false;
     87    bool mUseBoldSimulation = false;
     88    bool mUseMultistrikeBold = false;
     89    bool mGDIForced = false;
     90  };
     91 };
     92 
     93 }  // namespace gfx
     94 }  // namespace mozilla
     95 
     96 #endif /* MOZILLA_GFX_SCALEDFONTDWRITE_H_ */