ScaledFontBase.h - mozsearch

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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_SCALEDFONTBASE_H_

#define MOZILLA_GFX_SCALEDFONTBASE_H_

#include "2D.h"

#include "skia/include/core/SkFont.h"

#include "skia/include/core/SkPath.h"

#include "skia/include/core/SkTypeface.h"

// Skia uses cairo_scaled_font_t as the internal font type in ScaledFont

#include "cairo.h"

namespace mozilla {

namespace gfx {

class ScaledFontBase : public ScaledFont {

 public:

  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(ScaledFontBase, override)

  ScaledFontBase(const RefPtr<UnscaledFont>& aUnscaledFont, Float aSize);

  virtual ~ScaledFontBase();

  virtual already_AddRefed<Path> GetPathForGlyphs(

      const GlyphBuffer& aBuffer, const DrawTarget* aTarget) override;

  virtual void CopyGlyphsToBuilder(const GlyphBuffer& aBuffer,

                                   PathBuilder* aBuilder,

                                   const Matrix* aTransformHint) override;

  virtual Float GetSize() const override { return mSize; }

  SkTypeface* GetSkTypeface();

  virtual void SetupSkFontDrawOptions(SkFont& aFont) {}

  virtual cairo_scaled_font_t* GetCairoScaledFont() override;

 protected:

  friend class DrawTargetSkia;

  Atomic<SkTypeface*> mTypeface;

  virtual SkTypeface* CreateSkTypeface() { return nullptr; }

  SkPath GetSkiaPathForGlyphs(const GlyphBuffer& aBuffer);

  virtual cairo_font_face_t* CreateCairoFontFace(

      cairo_font_options_t* aFontOptions) {

    return nullptr;

  virtual void PrepareCairoScaledFont(cairo_scaled_font_t* aFont) {}

  cairo_scaled_font_t* mScaledFont;

  Float mSize;

};

}  // namespace gfx

}  // namespace mozilla

#endif /* MOZILLA_GFX_SCALEDFONTBASE_H_ */