gfx/2d/ScaledFontBase.h
author Brian Hackett <bhackett1024@gmail.com>
Thu, 27 Dec 2018 13:24:55 -1000
changeset 453697 e2af5f75beaf4ec851514352d62ff6f4b8a1d037
parent 448947 6f3709b3878117466168c40affa7bca0b60cf75b
child 454520 5f4630838d46dd81dadb13220a4af0da9e23a619
permissions -rw-r--r--
Bug 1516578 Part 1 - Merge HitCheckpoint and HitBreakpoint messages, r=mccr8.

/* -*- 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"

// Skia uses cairo_scaled_font_t as the internal font type in ScaledFont
#if defined(USE_SKIA) || defined(USE_CAIRO)
#define USE_CAIRO_SCALED_FONT
#endif

#ifdef USE_SKIA
#include "skia/include/core/SkPath.h"
#include "skia/include/core/SkTypeface.h"
#endif
#ifdef USE_CAIRO_SCALED_FONT
#include "cairo.h"
#endif

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 void GetGlyphDesignMetrics(const uint16_t* aGlyphIndices,
                                     uint32_t aNumGlyphs,
                                     GlyphMetrics* aGlyphMetrics) override;

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

#ifdef USE_SKIA
  SkTypeface* GetSkTypeface();
#endif

#ifdef USE_CAIRO_SCALED_FONT
  bool PopulateCairoScaledFont();
  virtual cairo_scaled_font_t* GetCairoScaledFont() override {
    return mScaledFont;
  }
  virtual void SetCairoScaledFont(cairo_scaled_font_t* font) override;
#endif

 protected:
  friend class DrawTargetSkia;
#ifdef USE_SKIA
  Atomic<SkTypeface*> mTypeface;
  virtual SkTypeface* CreateSkTypeface() { return nullptr; }
  SkPath GetSkiaPathForGlyphs(const GlyphBuffer& aBuffer);
#endif
#ifdef USE_CAIRO_SCALED_FONT
  // Overridders should ensure the cairo_font_face_t has been addrefed.
  virtual cairo_font_face_t* GetCairoFontFace() { return nullptr; }
  cairo_scaled_font_t* mScaledFont;
#endif
  Float mSize;
};

}  // namespace gfx
}  // namespace mozilla

#endif /* MOZILLA_GFX_SCALEDFONTBASE_H_ */