gfx/2d/ScaledFontDWrite.h

   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 ID2D1GeometrySink;
  15 struct gfxFontStyle;
  16
  17 namespace mozilla {
  18 namespace gfx {
  19
  20 class NativeFontResourceDWrite;
  21 class UnscaledFontDWrite;
  22
  23 class ScaledFontDWrite final : public ScaledFontBase {
  24  public:
  25   MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(ScaledFontDWrite, override)
  26   ScaledFontDWrite(IDWriteFontFace* aFontFace,
  27                    const RefPtr<UnscaledFont>& aUnscaledFont, Float aSize,
  28                    bool aUseEmbeddedBitmap, bool aUseMultistrikeBold,
  29                    bool aGDIForced, const gfxFontStyle* aStyle);
  30
  31   FontType GetType() const override { return FontType::DWRITE; }
  32
  33   already_AddRefed<Path> GetPathForGlyphs(const GlyphBuffer& aBuffer,
  34                                           const DrawTarget* aTarget) override;
  35   void CopyGlyphsToBuilder(const GlyphBuffer& aBuffer, PathBuilder* aBuilder,
  36                            const Matrix* aTransformHint) override;
  37
  38   void CopyGlyphsToSink(const GlyphBuffer& aBuffer,
  39                         ID2D1SimplifiedGeometrySink* aSink);
  40
  41   bool CanSerialize() override { return true; }
  42
  43   bool MayUseBitmaps() override;
  44
  45   bool GetFontInstanceData(FontInstanceDataOutput aCb, void* aBaton) override;
  46
  47   bool GetWRFontInstanceOptions(
  48       Maybe<wr::FontInstanceOptions>* aOutOptions,
  49       Maybe<wr::FontInstancePlatformOptions>* aOutPlatformOptions,
  50       std::vector<FontVariation>* aOutVariations) override;
  51
  52   DWriteSettings& DWriteSettings() const;
  53
  54   AntialiasMode GetDefaultAAMode() override;
  55
  56   bool UseEmbeddedBitmaps() const { return mUseEmbeddedBitmap; }
  57   bool UseMultistrikeBold() const { return mUseMultistrikeBold; }
  58   bool ForceGDIMode() const { return mGDIForced; }
  59
  60   bool UseSubpixelPosition() const override { return !ForceGDIMode(); }
  61
  62   bool HasBoldSimulation() const {
  63     return (mFontFace->GetSimulations() & DWRITE_FONT_SIMULATIONS_BOLD) != 0;
  64   }
  65
  66   bool HasVariationSettings() override;
  67
  68   SkTypeface* CreateSkTypeface() override;
  69   void SetupSkFontDrawOptions(SkFont& aFont) override;
  70   SkFontStyle mStyle;
  71
  72   RefPtr<IDWriteFontFace> mFontFace;
  73   bool mUseEmbeddedBitmap;
  74   bool mUseMultistrikeBold = false;
  75   bool mGDIForced = false;
  76
  77   cairo_font_face_t* CreateCairoFontFace(
  78       cairo_font_options_t* aFontOptions) override;
  79   void PrepareCairoScaledFont(cairo_scaled_font_t* aFont) override;
  80
  81  private:
  82   friend class NativeFontResourceDWrite;
  83   friend class UnscaledFontDWrite;
  84
  85   struct InstanceData {
  86     explicit InstanceData(ScaledFontDWrite* aScaledFont)
  87         : mUseEmbeddedBitmap(aScaledFont->mUseEmbeddedBitmap),
  88           mUseBoldSimulation(aScaledFont->HasBoldSimulation()),
  89           mUseMultistrikeBold(aScaledFont->UseMultistrikeBold()),
  90           mGDIForced(aScaledFont->mGDIForced) {}
  91
  92     InstanceData(const wr::FontInstanceOptions* aOptions,
  93                  const wr::FontInstancePlatformOptions* aPlatformOptions);
  94
  95     bool mUseEmbeddedBitmap = false;
  96     bool mUseBoldSimulation = false;
  97     bool mUseMultistrikeBold = false;
  98     bool mGDIForced = false;
  99   };
 100 };
 101
 102 }  // namespace gfx
 103 }  // namespace mozilla
 104
 105 #endif /* MOZILLA_GFX_SCALEDFONTDWRITE_H_ */