100 lines
2.7 KiB
C++
100 lines
2.7 KiB
C++
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/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2014 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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// mapnik
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#include <mapnik/util/font_library.hpp>
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#include <mapnik/text/face.hpp>
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// stl
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#include <cstdlib>
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// freetype2
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extern "C"
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{
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#include FT_MODULE_H
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}
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namespace {
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void* _Alloc_Func(FT_Memory memory, long size)
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{
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return std::malloc(size);
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}
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void _Free_Func(FT_Memory memory, void *block)
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{
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std::free(block);
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}
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void* _Realloc_Func(FT_Memory memory, long cur_size, long new_size, void* block)
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{
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return std::realloc(block, new_size);
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}
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}
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namespace mapnik {
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namespace util {
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font_library::font_library()
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: library_(nullptr),
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memory_(new FT_MemoryRec_)
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{
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memory_->alloc = _Alloc_Func;
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memory_->free = _Free_Func;
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memory_->realloc = _Realloc_Func;
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FT_Error error = FT_New_Library(&*memory_, &library_);
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if (error) throw std::runtime_error("can not initalize FreeType2 library");
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FT_Add_Default_Modules(library_);
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}
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FT_Library font_library::get() {
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return library_;
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}
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face_ptr font_library::face_from_memory(const char * buffer,
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std::size_t size,
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int index)
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{
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FT_Face face;
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FT_Error error = FT_New_Memory_Face(library_,
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reinterpret_cast<FT_Byte const*>(buffer), // data
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static_cast<FT_Long>(size), // size
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index, // face index
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&face);
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if (!error) return std::make_shared<font_face>(face);
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return face_ptr();
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}
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font_library::~font_library() {
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FT_Done_Library(library_);
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}
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} // end namespace util
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} // end namespace mapnik
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