129 lines
3.4 KiB
C++
129 lines
3.4 KiB
C++
/*****************************************************************************
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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) 2015 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/text/face.hpp>
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#include <mapnik/debug.hpp>
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#pragma GCC diagnostic push
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#include <mapnik/warning_ignore.hpp>
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extern "C"
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{
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#include FT_GLYPH_H
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}
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#pragma GCC diagnostic pop
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namespace mapnik
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{
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font_face::font_face(FT_Face face)
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: face_(face) {}
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bool font_face::set_character_sizes(double size)
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{
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return (FT_Set_Char_Size(face_,0,static_cast<FT_F26Dot6>(size * (1<<6)),0,0) == 0);
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}
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bool font_face::set_unscaled_character_sizes()
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{
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return (FT_Set_Char_Size(face_,0,face_->units_per_EM,0,0) == 0);
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}
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bool font_face::glyph_dimensions(glyph_info & glyph) const
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{
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FT_Vector pen;
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pen.x = 0;
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pen.y = 0;
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FT_Set_Transform(face_, 0, &pen);
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if (FT_Load_Glyph(face_, glyph.glyph_index, FT_LOAD_NO_HINTING))
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{
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MAPNIK_LOG_ERROR(font_face) << "FT_Load_Glyph failed";
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return false;
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}
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FT_Glyph image;
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if (FT_Get_Glyph(face_->glyph, &image))
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{
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MAPNIK_LOG_ERROR(font_face) << "FT_Get_Glyph failed";
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return false;
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}
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FT_BBox glyph_bbox;
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FT_Glyph_Get_CBox(image, FT_GLYPH_BBOX_TRUNCATE, &glyph_bbox);
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FT_Done_Glyph(image);
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glyph.unscaled_ymin = glyph_bbox.yMin;
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glyph.unscaled_ymax = glyph_bbox.yMax;
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glyph.unscaled_advance = face_->glyph->advance.x;
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glyph.unscaled_line_height = face_->size->metrics.height;
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return true;
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}
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font_face::~font_face()
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{
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MAPNIK_LOG_DEBUG(font_face) <<
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"font_face: Clean up face \"" << family_name() <<
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" " << style_name() << "\"";
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FT_Done_Face(face_);
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}
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/******************************************************************************/
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void font_face_set::add(face_ptr face)
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{
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faces_.push_back(face);
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}
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void font_face_set::set_character_sizes(double size)
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{
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for (face_ptr const& face : faces_)
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{
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face->set_character_sizes(size);
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}
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}
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void font_face_set::set_unscaled_character_sizes()
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{
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for (face_ptr const& face : faces_)
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{
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face->set_unscaled_character_sizes();
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}
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}
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/******************************************************************************/
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void stroker::init(double radius)
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{
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FT_Stroker_Set(s_, static_cast<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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stroker::~stroker()
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{
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MAPNIK_LOG_DEBUG(font_engine_freetype) << "stroker: Destroy stroker=" << s_;
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FT_Stroker_Done(s_);
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}
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}//ns mapnik
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