146 lines
3 KiB
C++
146 lines
3 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) 2013 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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#ifndef MAPNIK_FONT_UTIL_HPP
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#define MAPNIK_FONT_UTIL_HPP
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// mapnik
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#include <mapnik/noncopyable.hpp>
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#include <string>
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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_GLYPH_H
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#include FT_STROKER_H
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}
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namespace mapnik
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{
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struct char_properties;
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struct glyph_t : mapnik::noncopyable
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{
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FT_Glyph image;
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char_properties *properties;
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glyph_t(FT_Glyph image_, char_properties *properties_)
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: image(image_),
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properties(properties_) {}
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~glyph_t()
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{
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FT_Done_Glyph(image);
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}
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};
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// FT_Stroker wrapper
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class stroker : mapnik::noncopyable
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{
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public:
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explicit stroker(FT_Stroker s)
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: s_(s) {}
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void init(double radius)
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{
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FT_Stroker_Set(s_, (FT_Fixed) (radius * (1<<6)),
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FT_STROKER_LINECAP_ROUND,
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FT_STROKER_LINEJOIN_ROUND,
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0);
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}
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FT_Stroker const& get() const
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{
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return s_;
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}
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~stroker()
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{
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FT_Stroker_Done(s_);
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}
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private:
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FT_Stroker s_;
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};
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class font_face : mapnik::noncopyable
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{
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public:
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font_face(FT_Face face)
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: face_(face) {}
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std::string family_name() const
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{
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return std::string(face_->family_name);
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}
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std::string style_name() const
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{
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return std::string(face_->style_name);
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}
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FT_GlyphSlot glyph() const
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{
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return face_->glyph;
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}
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FT_Face get_face() const
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{
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return face_;
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}
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unsigned get_char(unsigned c) const
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{
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return FT_Get_Char_Index(face_, c);
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}
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bool set_pixel_sizes(unsigned size)
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{
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if (! FT_Set_Pixel_Sizes( face_, 0, size ))
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return true;
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return false;
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}
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bool set_character_sizes(double size)
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{
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if ( !FT_Set_Char_Size(face_,0,(FT_F26Dot6)(size * (1<<6)),0,0))
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return true;
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return false;
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}
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~font_face()
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{
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FT_Done_Face(face_);
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}
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private:
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FT_Face face_;
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};
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}
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#endif // MAPNIK_FONT_UTIL_HPP
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