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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/. */

#include "NativeFontResourceFreeType.h"
#include "UnscaledFontFreeType.h"
#include "Logging.h"

namespace mozilla {
namespace gfx {

NativeFontResourceFreeType::NativeFontResourceFreeType(
    UniquePtr<uint8_t[]>&& aFontData, uint32_t aDataLength, FT_Face aFace)
    : mFontData(std::move(aFontData)), mDataLength(aDataLength), mFace(aFace) {}

NativeFontResourceFreeType::~NativeFontResourceFreeType() {
  if (mFace) {
    Factory::ReleaseFTFace(mFace);
    mFace = nullptr;
  }
}

template <class T>
already_AddRefed<T> NativeFontResourceFreeType::CreateInternal(
    uint8_t* aFontData, uint32_t aDataLength, FT_Library aFTLibrary) {
  if (!aFontData || !aDataLength) {
    return nullptr;
  }
  UniquePtr<uint8_t[]> fontData(new (fallible) uint8_t[aDataLength]);
  if (!fontData) {
    return nullptr;
  }
  memcpy(fontData.get(), aFontData, aDataLength);

  FT_Face face =
      Factory::NewFTFaceFromData(aFTLibrary, fontData.get(), aDataLength, 0);
  if (!face) {
    return nullptr;
  }
  if (FT_Select_Charmap(face, FT_ENCODING_UNICODE) != FT_Err_Ok &&
      FT_Select_Charmap(face, FT_ENCODING_MS_SYMBOL) != FT_Err_Ok) {
    Factory::ReleaseFTFace(face);
    return nullptr;
  }

  RefPtr<T> resource = new T(std::move(fontData), aDataLength, face);
  return resource.forget();
}

#ifdef MOZ_WIDGET_ANDROID
already_AddRefed<NativeFontResourceFreeType> NativeFontResourceFreeType::Create(
    uint8_t* aFontData, uint32_t aDataLength, FT_Library aFTLibrary) {
  return CreateInternal<NativeFontResourceFreeType>(aFontData, aDataLength,
                                                    aFTLibrary);
}

already_AddRefed<UnscaledFont> NativeFontResourceFreeType::CreateUnscaledFont(
    uint32_t aIndex, const uint8_t* aInstanceData,
    uint32_t aInstanceDataLength) {
  RefPtr<UnscaledFont> unscaledFont = new UnscaledFontFreeType(mFace, this);
  return unscaledFont.forget();
}
#endif

FT_Face NativeFontResourceFreeType::CloneFace() {
  return Factory::NewFTFaceFromData(mFace->glyph->library, mFontData.get(),
                                    mDataLength, 0);
}

#ifdef MOZ_WIDGET_GTK
NativeFontResourceFontconfig::NativeFontResourceFontconfig(
    UniquePtr<uint8_t[]>&& aFontData, uint32_t aDataLength, FT_Face aFace)
    : NativeFontResourceFreeType(std::move(aFontData), aDataLength, aFace) {}

already_AddRefed<UnscaledFont> NativeFontResourceFontconfig::CreateUnscaledFont(
    uint32_t aIndex, const uint8_t* aInstanceData,
    uint32_t aInstanceDataLength) {
  RefPtr<UnscaledFont> unscaledFont = new UnscaledFontFontconfig(mFace, this);
  return unscaledFont.forget();
}

already_AddRefed<NativeFontResourceFontconfig>
NativeFontResourceFontconfig::Create(uint8_t* aFontData, uint32_t aDataLength,
                                     FT_Library aFTLibrary) {
  return CreateInternal<NativeFontResourceFontconfig>(aFontData, aDataLength,
                                                      aFTLibrary);
}
#endif

}  // namespace gfx
}  // namespace mozilla