104 lines
3.5 KiB
C++
104 lines
3.5 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) 2012 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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#include <mapnik/processed_text.hpp>
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#include <mapnik/config_error.hpp>
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#include <mapnik/font_engine_freetype.hpp>
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#include <mapnik/value_types.hpp>
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namespace mapnik
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{
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void processed_text::push_back(char_properties const& properties, mapnik::value_unicode_string const& text)
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{
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expr_list_.push_back(processed_expression(properties, text));
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}
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processed_text::expression_list::const_iterator processed_text::begin() const
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{
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return expr_list_.begin();
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}
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processed_text::expression_list::const_iterator processed_text::end() const
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{
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return expr_list_.end();
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}
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processed_text::processed_text(face_manager<freetype_engine> & font_manager, double scale_factor)
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: font_manager_(font_manager), scale_factor_(scale_factor)
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{
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}
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void processed_text::clear()
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{
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info_.clear();
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expr_list_.clear();
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}
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string_info const& processed_text::get_string_info()
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{
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info_.clear(); //if this function is called twice invalid results are returned, so clear string_info first
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expression_list::iterator itr = expr_list_.begin();
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expression_list::iterator end = expr_list_.end();
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for (; itr != end; ++itr)
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{
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char_properties const &p = itr->p;
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face_set_ptr faces = font_manager_.get_face_set(p.face_name, p.fontset);
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if (faces->size() == 0)
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{
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if (p.fontset && !p.fontset->get_name().empty())
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{
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if (p.fontset->size())
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{
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if (!p.face_name.empty())
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{
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throw config_error("Unable to find specified font face '" + p.face_name + "' in font set: '" + p.fontset->get_name() + "'");
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}
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else
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{
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throw config_error("No valid font face could be loaded for font set: '" + p.fontset->get_name() + "'");
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}
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}
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else
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{
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throw config_error("Font set '" + p.fontset->get_name() + "' does not contain any Font face-name entries");
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}
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}
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else if (!p.face_name.empty())
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{
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throw config_error("Unable to find specified font face '" + p.face_name + "'");
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}
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else
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{
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throw config_error("Both font set and face name are empty!");
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}
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}
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faces->set_character_sizes(p.text_size * scale_factor_);
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faces->get_string_info(info_, itr->str, &(itr->p));
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info_.add_text(itr->str);
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}
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return info_;
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}
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} //ns mapnik
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