chromium/third_party/blink/renderer/platform/fonts/font_cache.h

/*
 * Copyright (C) 2006, 2008 Apple Computer, Inc.  All rights reserved.
 * Copyright (C) 2007-2008 Torch Mobile, Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_FONTS_FONT_CACHE_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_FONTS_FONT_CACHE_H_

#include <limits.h>

#include <memory>
#include <string>

#include "base/gtest_prod_util.h"
#include "build/build_config.h"
#include "third_party/blink/renderer/platform/fonts/fallback_list_composite_key.h"
#include "third_party/blink/renderer/platform/fonts/font_cache_client.h"
#include "third_party/blink/renderer/platform/fonts/font_data_cache.h"
#include "third_party/blink/renderer/platform/fonts/font_face_creation_params.h"
#include "third_party/blink/renderer/platform/fonts/font_fallback_priority.h"
#include "third_party/blink/renderer/platform/fonts/font_platform_data_cache.h"
#include "third_party/blink/renderer/platform/fonts/shaping/shape_cache.h"
#include "third_party/blink/renderer/platform/heap/collection_support/heap_hash_set.h"
#include "third_party/blink/renderer/platform/platform_export.h"
#include "third_party/blink/renderer/platform/wtf/allocator/allocator.h"
#include "third_party/blink/renderer/platform/wtf/forward.h"
#include "third_party/blink/renderer/platform/wtf/hash_map.h"
#include "third_party/blink/renderer/platform/wtf/std_lib_extras.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_uchar.h"
#include "third_party/skia/include/core/SkFontMgr.h"
#include "third_party/skia/include/core/SkRefCnt.h"

#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS)
#include "ui/gfx/font_fallback_linux.h"
#endif

class SkString;
class SkTypeface;

namespace base {
namespace trace_event {
class ProcessMemoryDump;
}  // namespace trace_event
}  // namespace base

namespace blink {

class FontDescription;
class FontFaceCreationParams;
class FontFallbackMap;
class FontGlobalContext;
class FontPlatformData;
class SimpleFontData;
class WebFontPrewarmer;

enum class AlternateFontName { … };

// "und-Zsye" and "und-Zsym", the special locale for retrieving the color emoji
// font and text emoji font correspondingly defined in UTS #51:
// https://unicode.org/reports/tr51/#Emoji_Script
extern const char kColorEmojiLocale[];
extern const char kMonoEmojiLocale[];

#if BUILDFLAG(IS_ANDROID)
extern const char kNotoColorEmojiCompat[];
#endif

class PLATFORM_EXPORT FontCache final { … };

class PLATFORM_EXPORT FontCachePurgePreventer { … };

AtomicString ToAtomicString(const SkString&);

#if BUILDFLAG(IS_ANDROID)
// TODO(crbug.com/1241875) Can this be simplified?
// static
inline const char* FontCache::GetLocaleSpecificFamilyName(
    const AtomicString& family_name) {
  // Only `serif` has `fallbackFor` according to the current `fonts.xml`.
  if (family_name == font_family_names::kSerif)
    return "serif";
  return nullptr;
}
#endif

}  // namespace blink

#endif  // THIRD_PARTY_BLINK_RENDERER_PLATFORM_FONTS_FONT_CACHE_H_