1 files changed, 128 insertions, 0 deletions
diff --git a/gfx/2d/ScaledFontDWrite.h b/gfx/2d/ScaledFontDWrite.h
new file mode 100644
index 0000000000..d7662dea66
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+++ b/gfx/2d/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 "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),
+        mClearTypeLevel(1.0f) {}
+
+  ScaledFontDWrite(IDWriteFontFace* aFontFace,
+                   const RefPtr<UnscaledFont>& aUnscaledFont, Float aSize,
+                   bool aUseEmbeddedBitmap,
+                   DWRITE_RENDERING_MODE aRenderingMode,
+                   IDWriteRenderingParams* aParams, Float aGamma,
+                   Float aContrast, Float aClearTypeLevel,
+                   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);
+
+  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; }
+
+  bool HasSyntheticBold() const {
+    return (mFontFace->GetSimulations() & DWRITE_FONT_SIMULATIONS_BOLD) != 0;
+  }
+
+#ifdef USE_SKIA
+  SkTypeface* CreateSkTypeface() override;
+  void SetupSkFontDrawOptions(SkFont& aFont) 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;
+  Float mClearTypeLevel;
+
+#ifdef USE_CAIRO_SCALED_FONT
+  cairo_font_face_t* CreateCairoFontFace(
+      cairo_font_options_t* aFontOptions) override;
+  void PrepareCairoScaledFont(cairo_scaled_font_t* aFont) override;
+#endif
+
+ private:
+  friend class NativeFontResourceDWrite;
+  friend class UnscaledFontDWrite;
+
+  struct InstanceData {
+    explicit InstanceData(ScaledFontDWrite* aScaledFont)
+        : mUseEmbeddedBitmap(aScaledFont->mUseEmbeddedBitmap),
+          mApplySyntheticBold(aScaledFont->HasSyntheticBold()),
+          mRenderingMode(aScaledFont->mRenderingMode),
+          mGamma(aScaledFont->mGamma),
+          mContrast(aScaledFont->mContrast),
+          mClearTypeLevel(aScaledFont->mClearTypeLevel) {}
+
+    InstanceData(const wr::FontInstanceOptions* aOptions,
+                 const wr::FontInstancePlatformOptions* aPlatformOptions);
+
+    bool mUseEmbeddedBitmap;
+    bool mApplySyntheticBold;
+    DWRITE_RENDERING_MODE mRenderingMode;
+    Float mGamma;
+    Float mContrast;
+    Float mClearTypeLevel;
+  };
+};
+
+}  // namespace gfx
+}  // namespace mozilla
+
+#endif /* MOZILLA_GFX_SCALEDFONTDWRITE_H_ */