tor-browser

The Tor Browser
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ScaledFontBase.h (1951B)

      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_SCALEDFONTBASE_H_
      8 #define MOZILLA_GFX_SCALEDFONTBASE_H_
      9 
     10 #include "2D.h"
     11 
     12 #include "skia/include/core/SkFont.h"
     13 #include "skia/include/core/SkPath.h"
     14 #include "skia/include/core/SkTypeface.h"
     15 // Skia uses cairo_scaled_font_t as the internal font type in ScaledFont
     16 #include "cairo.h"
     17 
     18 namespace mozilla {
     19 namespace gfx {
     20 
     21 class ScaledFontBase : public ScaledFont {
     22 public:
     23  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(ScaledFontBase, override)
     24 
     25  ScaledFontBase(const RefPtr<UnscaledFont>& aUnscaledFont, Float aSize);
     26  virtual ~ScaledFontBase();
     27 
     28  virtual already_AddRefed<Path> GetPathForGlyphs(
     29      const GlyphBuffer& aBuffer, const DrawTarget* aTarget) override;
     30 
     31  virtual void CopyGlyphsToBuilder(const GlyphBuffer& aBuffer,
     32                                   PathBuilder* aBuilder,
     33                                   const Matrix* aTransformHint) override;
     34 
     35  virtual Float GetSize() const override { return mSize; }
     36 
     37  SkTypeface* GetSkTypeface();
     38  virtual void SetupSkFontDrawOptions(SkFont& aFont) {}
     39 
     40  virtual cairo_scaled_font_t* GetCairoScaledFont() override;
     41 
     42 protected:
     43  friend class DrawTargetSkia;
     44  Atomic<SkTypeface*> mTypeface;
     45  virtual SkTypeface* CreateSkTypeface() { return nullptr; }
     46  SkPath GetSkiaPathForGlyphs(const GlyphBuffer& aBuffer);
     47  virtual cairo_font_face_t* CreateCairoFontFace(
     48      cairo_font_options_t* aFontOptions) {
     49    return nullptr;
     50  }
     51  virtual void PrepareCairoScaledFont(cairo_scaled_font_t* aFont) {}
     52  cairo_scaled_font_t* mScaledFont;
     53  Float mSize;
     54 };
     55 
     56 }  // namespace gfx
     57 }  // namespace mozilla
     58 
     59 #endif /* MOZILLA_GFX_SCALEDFONTBASE_H_ */