gdipp_config/render_config_cache.cpp

   1 #include "stdafx.h"
   2 #include "render_config_cache.h"
   3 #include "gdipp_lib/helper.h"
   4 #include "gdipp_lib/scoped_rw_lock.h"
   5
   6 namespace gdipp
   7 {
   8
   9 render_config_cache::render_config_cache(const config_file &file)
  10 {
  11         if (file.empty())
  12                 return;
  13
  14         const pugi::xml_document *config_xml_doc = reinterpret_cast<const pugi::xml_document *>(file.get_config_xml());
  15         const pugi::xpath_node_set render_font_nodes = config_xml_doc->select_nodes(L"/gdipp/server/render/font");
  16         for (pugi::xpath_node_set::const_iterator node_iter = render_font_nodes.begin(); node_iter != render_font_nodes.end(); ++node_iter)
  17         {
  18                 const pugi::xml_node curr_node = node_iter->node();
  19                 const config cfg(&curr_node);
  20                 const font_config_criteria curr_criteria(&curr_node);
  21                 render_config_static *curr_rcs = new render_config_static();
  22                 curr_rcs->parse(cfg);
  23                 _configs.push_back(std::pair<font_config_criteria, const render_config_static *>(curr_criteria, curr_rcs));
  24         }
  25
  26         _default_config = new render_config_static();
  27 }
  28
  29 render_config_cache::~render_config_cache()
  30 {
  31         delete _default_config;
  32
  33         for (std::list<std::pair<font_config_criteria, const render_config_static *>>::const_iterator config_iter = _configs.begin();
  34                 config_iter != _configs.end();
  35                 ++config_iter)
  36                 delete config_iter->second;
  37 }
  38
  39 const render_config_static *render_config_cache::get_font_render_config(bool bold, bool italic, LONG height, const wchar_t *font_name)
  40 {
  41         const uint32_t trait = get_render_config_trait(bold, italic, height, font_name);
  42         std::map<uint32_t, const render_config_static *>::const_iterator config_iter = _cache.find(trait);
  43         if (config_iter == _cache.end())
  44         {
  45                 const scoped_rw_lock lock_w(scoped_rw_lock::CONFIG_RENDER_CACHE, false);
  46                 config_iter = _cache.find(trait);
  47                 if (config_iter == _cache.end())
  48                 {
  49                         const render_config_static *rcs = find_font_render_config(bold, italic, height, font_name);
  50                         if (rcs == NULL)
  51                                 rcs = _default_config;
  52                         _cache.insert(std::pair<uint32_t, const render_config_static *>(trait, rcs));
  53                         return rcs;
  54                 }
  55         }
  56
  57         return config_iter->second;
  58 }
  59
  60 const render_config_static *render_config_cache::find_font_render_config(bool bold, bool italic, LONG height, const wchar_t *font_name) const
  61 {
  62         for (std::list<std::pair<font_config_criteria, const render_config_static *>>::const_iterator config_iter = _configs.begin();
  63                 config_iter != _configs.end();
  64                 ++config_iter)
  65         {
  66                 if (config_iter->first.is_satisfied(bold, italic, height, font_name))
  67                         return config_iter->second;
  68         }
  69
  70         return NULL;
  71 }
  72
  73 }