text: /****************************************************************************
   Copyright (c) 2013      Zynga Inc.
   Copyright (c) 2013-2016 Chukong Technologies Inc.
   
   http://www.cocos2d-x.org
   
   Permission is hereby granted, free of charge, to any person obtaining a copy
   of this software and associated documentation files (the "Software"), to deal
   in the Software without restriction, including without limitation the rights
   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   copies of the Software, and to permit persons to whom the Software is
   furnished to do so, subject to the following conditions:
   
   The above copyright notice and this permission notice shall be included in
   all copies or substantial portions of the Software.
   
   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   THE SOFTWARE.
   ****************************************************************************/
  #include "2d/CCFontAtlasCache.h"
  
  #include "base/CCDirector.h"
  #include "2d/CCFontFNT.h"
  #include "2d/CCFontFreeType.h"
  #include "2d/CCFontAtlas.h"
  #include "2d/CCFontCharMap.h"
  #include "2d/CCLabel.h"
  
  NS_CC_BEGIN
  
  std::unordered_map<std::string, FontAtlas *> FontAtlasCache::_atlasMap;
  #define ATLAS_MAP_KEY_BUFFER 255
  
  void FontAtlasCache::purgeCachedData()
  {
      auto atlasMapCopy = _atlasMap;
      for (auto&& atlas : atlasMapCopy)
      {
          atlas.second->purgeTexturesAtlas();
      }
      _atlasMap.clear();
  }
  
  FontAtlas* FontAtlasCache::getFontAtlasTTF(const _ttfConfig* config)
  {  
      bool useDistanceField = config->distanceFieldEnabled;
      if(config->outlineSize > 0)
      {
          useDistanceField = false;
      }
  
      char tmp[ATLAS_MAP_KEY_BUFFER];
      if (useDistanceField) {
          snprintf(tmp, ATLAS_MAP_KEY_BUFFER, "df %.2f %d %s", config->fontSize, config->outlineSize,
                   config->fontFilePath.c_str());
      } else {
          snprintf(tmp, ATLAS_MAP_KEY_BUFFER, "%.2f %d %s", config->fontSize, config->outlineSize,
                   config->fontFilePath.c_str());
      }
      std::string atlasName = tmp;
  
      auto it = _atlasMap.find(atlasName);
  
      if ( it == _atlasMap.end() )
      {
          auto font = FontFreeType::create(config->fontFilePath, config->fontSize, config->glyphs,
              config->customGlyphs, useDistanceField, config->outlineSize);
          if (font)
          {
              auto tempAtlas = font->createFontAtlas();
              if (tempAtlas)
              {
                  _atlasMap[atlasName] = tempAtlas;
                  return _atlasMap[atlasName];
              }
          }
      }
      else
      {
          _atlasMap[atlasName]->retain();
          return _atlasMap[atlasName];
      }
  
      return nullptr;
  }
  
  FontAtlas* FontAtlasCache::getFontAtlasFNT(const std::string& fontFileName, const Vec2& imageOffset /* = Vec2::ZERO */)
  {
      char tmp[ATLAS_MAP_KEY_BUFFER];
      snprintf(tmp, ATLAS_MAP_KEY_BUFFER, "%.2f %.2f %s", imageOffset.x, imageOffset.y, fontFileName.c_str());
      std::string atlasName = tmp;
      
      auto it = _atlasMap.find(atlasName);
      if ( it == _atlasMap.end() )
      {
          auto font = FontFNT::create(fontFileName,imageOffset);
  
          if(font)
          {
              auto tempAtlas = font->createFontAtlas();
              if (tempAtlas)
              {
                  _atlasMap[atlasName] = tempAtlas;
                  return _atlasMap[atlasName];
              }
          }
      }
      else
      {
          _atlasMap[atlasName]->retain();
          return _atlasMap[atlasName];
      }
      
      return nullptr;
  }
  
  FontAtlas* FontAtlasCache::getFontAtlasCharMap(const std::string& plistFile)
  {
      std::string atlasName = plistFile;
      
      auto it = _atlasMap.find(atlasName);
      if ( it == _atlasMap.end() )
      {
          auto font = FontCharMap::create(plistFile);
  
          if(font)
          {
              auto tempAtlas = font->createFontAtlas();
              if (tempAtlas)
              {
                  _atlasMap[atlasName] = tempAtlas;
                  return _atlasMap[atlasName];
              }
          }
      }
      else
      {
          _atlasMap[atlasName]->retain();
          return _atlasMap[atlasName];
      }
  
      return nullptr;
  }
  
  FontAtlas* FontAtlasCache::getFontAtlasCharMap(Texture2D* texture, int itemWidth, int itemHeight, int startCharMap)
  {
      char tmp[30];
      sprintf(tmp,"name:%u_%d_%d_%d",texture->getName(),itemWidth,itemHeight,startCharMap);
      std::string atlasName = tmp;
  
      auto it = _atlasMap.find(atlasName);
      if ( it == _atlasMap.end() )
      {
          auto font = FontCharMap::create(texture,itemWidth,itemHeight,startCharMap);
  
          if(font)
          {
              auto tempAtlas = font->createFontAtlas();
              if (tempAtlas)
              {
                  _atlasMap[atlasName] = tempAtlas;
                  return _atlasMap[atlasName];
              }
          }
      }
      else
      {
          _atlasMap[atlasName]->retain();
          return _atlasMap[atlasName];
      }
  
      return nullptr;
  }
  
  FontAtlas* FontAtlasCache::getFontAtlasCharMap(const std::string& charMapFile, int itemWidth, int itemHeight, int startCharMap)
  {
      char tmp[ATLAS_MAP_KEY_BUFFER];
      snprintf(tmp, ATLAS_MAP_KEY_BUFFER, "%d %d %d %s", itemWidth, itemHeight, startCharMap, charMapFile.c_str());
      std::string atlasName = tmp;
  
      auto it = _atlasMap.find(atlasName);
      if ( it == _atlasMap.end() )
      {
          auto font = FontCharMap::create(charMapFile,itemWidth,itemHeight,startCharMap);
  
          if(font)
          {
              auto tempAtlas = font->createFontAtlas();
              if (tempAtlas)
              {
                  _atlasMap[atlasName] = tempAtlas;
                  return _atlasMap[atlasName];
              }
          }
      }
      else
      {
          _atlasMap[atlasName]->retain();
          return _atlasMap[atlasName];
      }
  
      return nullptr;
  }
  
  bool FontAtlasCache::releaseFontAtlas(FontAtlas *atlas)
  {
      if (nullptr != atlas)
      {
          for( auto &item: _atlasMap )
          {
              if ( item.second == atlas )
              {
                  if (atlas->getReferenceCount() == 1)
                  {
                    _atlasMap.erase(item.first);
                  }
                  
                  atlas->release();
                  
                  return true;
              }
          }
      }
      
      return false;
  }
  
  void FontAtlasCache::reloadFontAtlasFNT(const std::string& fontFileName, const Vec2& imageOffset/* = Vec2::ZERO*/)
  {
      char tmp[ATLAS_MAP_KEY_BUFFER];
      snprintf(tmp, ATLAS_MAP_KEY_BUFFER, "%.2f %.2f %s", imageOffset.x, imageOffset.y, fontFileName.c_str());
      std::string atlasName = tmp;
      
      auto it = _atlasMap.find(atlasName);
      if (it != _atlasMap.end())
      {
          CC_SAFE_RELEASE_NULL(it->second);
          _atlasMap.erase(it);
      }
      FontFNT::reloadBMFontResource(fontFileName);
      auto font = FontFNT::create(fontFileName, imageOffset);
      if (font)
      {
          auto tempAtlas = font->createFontAtlas();
          if (tempAtlas)
          {
              _atlasMap[atlasName] = tempAtlas;
          }
      }
  
  }
  
  void FontAtlasCache::unloadFontAtlasTTF(const std::string& fontFileName)
  {
      auto item = _atlasMap.begin();
      while (item != _atlasMap.end())
      {
          if (item->first.find(fontFileName) != std::string::npos)
          {
              CC_SAFE_RELEASE_NULL(item->second);
              item = _atlasMap.erase(item);
          }
          else
              item++;
      }
  }
  
  NS_CC_END
  