gecko-dev/gfx/2d/NativeFontResourceGDI.h

/* -*- 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_NativeFontResourceGDI_h
#define mozilla_gfx_NativeFontResourceGDI_h

#include <windows.h>

#include "2D.h"
#include "mozilla/AlreadyAddRefed.h"
#include "mozilla/Vector.h"
#include "u16string.h"

namespace mozilla {
namespace gfx {

class NativeFontResourceGDI final : public NativeFontResource
{
public:
  MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(NativeFontResourceGDI)
  /**
   * Creates a NativeFontResourceGDI if data is valid. Note aFontData will be
   * copied if required and so can be released after calling.
   *
   * @param aFontData the SFNT data.
   * @param aDataLength length of data.
   * @param aNeedsCairo whether the ScaledFont created need a cairo scaled font
   * @return Referenced NativeFontResourceGDI or nullptr if invalid.
   */
  static already_AddRefed<NativeFontResourceGDI>
    Create(uint8_t *aFontData, uint32_t aDataLength, bool aNeedsCairo);

  ~NativeFontResourceGDI();

  already_AddRefed<ScaledFont>
    CreateScaledFont(uint32_t aIndex, Float aGlyphSize,
                     const uint8_t* aInstanceData, uint32_t aInstanceDataLength) final;

private:
  NativeFontResourceGDI(HANDLE aFontResourceHandle,
                        Vector<mozilla::u16string>&& aFontNames,
                        bool aNeedsCairo)
    : mFontResourceHandle(aFontResourceHandle), mFontNames(Move(aFontNames))
    , mNeedsCairo(aNeedsCairo)
  {}

  HANDLE mFontResourceHandle;
  Vector<mozilla::u16string> mFontNames;
  bool mNeedsCairo;
};

} // gfx
} // mozilla

#endif // mozilla_gfx_NativeFontResourceGDI_h