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freetype_engine - preserve original intetface via static methods + make impl methods private.

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This commit is contained in:
artemp 2017-06-01 10:45:09 +02:00
parent 648f9698a0
commit d1327dea88
2 changed files with 90 additions and 33 deletions
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61
include/mapnik/font_engine_freetype.hpp
View file

@ -56,34 +56,48 @@ class MAPNIK_DECL freetype_engine : public singleton<freetype_engine, CreateUsin
private util::noncopyable
{
friend class CreateUsingNew<freetype_engine>;
friend class Map;
public:
using font_file_mapping_type = std::map<std::string,std::pair<int,std::string>>;
using font_memory_cache_type = std::map<std::string, std::pair<std::unique_ptr<char[]>, std::size_t>>;
bool is_font_file(std::string const& file_name);
/*! \brief register a font file
* @param file_name path to a font file.
* @return bool - true if at least one face was successfully registered in the file.
*/
bool register_font(std::string const& file_name);
/*! \brief register a font files
* @param dir - path to a directory containing fonts or subdirectories.
* @param recurse - default false, whether to search for fonts in sub directories.
* @return bool - true if at least one face was successfully registered.
*/
bool register_fonts(std::string const& dir, bool recurse = false);
std::vector<std::string> face_names();
font_file_mapping_type const& get_mapping();
font_memory_cache_type & get_cache();
bool can_open(std::string const& face_name,
static bool is_font_file(std::string const& file_name);
static bool register_font(std::string const& file_name);
static bool register_fonts(std::string const& dir, bool recurse = false);
static std::vector<std::string> face_names();
static font_file_mapping_type const& get_mapping();
static font_memory_cache_type & get_cache();
static bool can_open(std::string const& face_name,
font_library & library,
font_file_mapping_type const& font_file_mapping,
font_file_mapping_type const& global_font_file_mapping);
face_ptr create_face(std::string const& face_name,
font_library & library,
font_file_mapping_type const& font_file_mapping,
freetype_engine::font_memory_cache_type const& font_cache,
font_file_mapping_type const& global_font_file_mapping,
freetype_engine::font_memory_cache_type & global_memory_fonts);
static face_ptr create_face(std::string const& face_name,
font_library & library,
font_file_mapping_type const& font_file_mapping,
freetype_engine::font_memory_cache_type const& font_cache,
font_file_mapping_type const& global_font_file_mapping,
freetype_engine::font_memory_cache_type & global_memory_fonts);
private:
bool is_font_file_impl(std::string const& file_name);
std::vector<std::string> face_names_impl();
font_file_mapping_type const& get_mapping_impl();
font_memory_cache_type& get_cache_impl();
bool can_open_impl(std::string const& face_name,
font_library & library,
font_file_mapping_type const& font_file_mapping,
font_file_mapping_type const& global_font_file_mapping);
face_ptr create_face_impl(std::string const& face_name,
font_library & library,
font_file_mapping_type const& font_file_mapping,
freetype_engine::font_memory_cache_type const& font_cache,
font_file_mapping_type const& global_font_file_mapping,
freetype_engine::font_memory_cache_type & global_memory_fonts);
bool register_font_impl(std::string const& file_name);
bool register_fonts_impl(std::string const& dir, bool recurse);
bool register_font_impl(std::string const& file_name, FT_LibraryRec_ * library);
bool register_fonts_impl(std::string const& dir, FT_LibraryRec_ * library, bool recurse = false);
bool register_font_impl(std::string const& file_name,
font_library & libary,
font_file_mapping_type & font_file_mapping);
@ -91,9 +105,6 @@ public:
font_library & libary,
font_file_mapping_type & font_file_mapping,
bool recurse = false);
private:
bool register_font_impl(std::string const& file_name, FT_LibraryRec_ * library);
bool register_fonts_impl(std::string const& dir, FT_LibraryRec_ * library, bool recurse = false);
#ifdef MAPNIK_THREADSAFE
std::mutex mutex_;
#endif

62
src/font_engine_freetype.cpp
View file

@ -77,6 +77,11 @@ unsigned long ft_read_cb(FT_Stream stream, unsigned long offset, unsigned char *
}
bool freetype_engine::register_font(std::string const& file_name)
{
return instance().register_font_impl(file_name);
}
bool freetype_engine::register_font_impl(std::string const& file_name)
{
#ifdef MAPNIK_THREADSAFE
std::lock_guard<std::mutex> lock(mutex_);
@ -159,6 +164,11 @@ bool freetype_engine::register_font_impl(std::string const& file_name,
}
bool freetype_engine::register_fonts(std::string const& dir, bool recurse)
{
return instance().register_fonts_impl(dir, recurse);
}
bool freetype_engine::register_fonts_impl(std::string const& dir, bool recurse)
{
#ifdef MAPNIK_THREADSAFE
std::lock_guard<std::mutex> lock(mutex_);
@ -214,8 +224,12 @@ bool freetype_engine::register_fonts_impl(std::string const& dir,
return success;
}
std::vector<std::string> freetype_engine::face_names()
{
return instance().face_names_impl();
}
std::vector<std::string> freetype_engine::face_names ()
std::vector<std::string> freetype_engine::face_names_impl()
{
std::vector<std::string> names;
for (auto const& kv : global_font_file_mapping_)
@ -226,11 +240,21 @@ std::vector<std::string> freetype_engine::face_names ()
}
freetype_engine::font_file_mapping_type const& freetype_engine::get_mapping()
{
return instance().get_mapping_impl();
}
freetype_engine::font_file_mapping_type const& freetype_engine::get_mapping_impl()
{
return global_font_file_mapping_;
}
freetype_engine::font_memory_cache_type & freetype_engine::get_cache()
{
return instance().get_cache_impl();
}
freetype_engine::font_memory_cache_type & freetype_engine::get_cache_impl()
{
return global_memory_fonts_;
}
@ -239,6 +263,14 @@ bool freetype_engine::can_open(std::string const& face_name,
font_library & library,
font_file_mapping_type const& font_file_mapping,
font_file_mapping_type const& global_font_file_mapping)
{
return instance().can_open_impl(face_name, library, font_file_mapping, global_font_file_mapping);
}
bool freetype_engine::can_open_impl(std::string const& face_name,
font_library & library,
font_file_mapping_type const& font_file_mapping,
font_file_mapping_type const& global_font_file_mapping)
{
bool found_font_file = false;
font_file_mapping_type::const_iterator itr = font_file_mapping.find(face_name);
@ -277,12 +309,12 @@ bool freetype_engine::can_open(std::string const& face_name,
return true;
}
face_ptr freetype_engine::create_face(std::string const& family_name,
font_library & library,
freetype_engine::font_file_mapping_type const& font_file_mapping,
freetype_engine::font_memory_cache_type const& font_cache,
freetype_engine::font_file_mapping_type const& global_font_file_mapping,
freetype_engine::font_memory_cache_type & global_memory_fonts)
face_ptr freetype_engine::create_face_impl(std::string const& family_name,
font_library & library,
freetype_engine::font_file_mapping_type const& font_file_mapping,
freetype_engine::font_memory_cache_type const& font_cache,
freetype_engine::font_file_mapping_type const& global_font_file_mapping,
freetype_engine::font_memory_cache_type & global_memory_fonts)
{
bool found_font_file = false;
font_file_mapping_type::const_iterator itr = font_file_mapping.find(family_name);
@ -354,6 +386,20 @@ face_ptr freetype_engine::create_face(std::string const& family_name,
return face_ptr();
}
face_ptr freetype_engine::create_face(std::string const& family_name,
font_library & library,
freetype_engine::font_file_mapping_type const& font_file_mapping,
freetype_engine::font_memory_cache_type const& font_cache,
freetype_engine::font_file_mapping_type const& global_font_file_mapping,
freetype_engine::font_memory_cache_type & global_memory_fonts)
{
return instance().create_face_impl(family_name,
library,
font_file_mapping,
font_cache,
global_font_file_mapping,
global_memory_fonts);
}
face_manager::face_manager(font_library & library,
freetype_engine::font_file_mapping_type const& font_file_mapping,
@ -380,7 +426,7 @@ face_ptr face_manager::get_face(std::string const& name)
}
else
{
face_ptr face = freetype_engine::instance().create_face(name,
face_ptr face = freetype_engine::create_face(name,
library_,
font_file_mapping_,
font_memory_cache_,