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/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2012 Artem Pavlenko
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*****************************************************************************/
#include <mapnik/processed_text.hpp>
#include <mapnik/config_error.hpp>
namespace mapnik
{
void processed_text::push_back(char_properties const& properties, UnicodeString const& text)
{
expr_list_.push_back(processed_expression(properties, text));
}
processed_text::expression_list::const_iterator processed_text::begin() const
{
return expr_list_.begin();
}
processed_text::expression_list::const_iterator processed_text::end() const
{
return expr_list_.end();
}
processed_text::processed_text(face_manager<freetype_engine> & font_manager, double scale_factor)
: font_manager_(font_manager), scale_factor_(scale_factor)
{
}
void processed_text::clear()
{
info_.clear();
expr_list_.clear();
}
string_info &processed_text::get_string_info()
{
info_.clear(); //if this function is called twice invalid results are returned, so clear string_info first
expression_list::iterator itr = expr_list_.begin();
expression_list::iterator end = expr_list_.end();
for (; itr != end; ++itr)
{
char_properties const &p = itr->p;
face_set_ptr faces = font_manager_.get_face_set(p.face_name, p.fontset);
if (faces->size() == 0)
{
if (p.fontset && !p.fontset->get_name().empty())
{
if (p.fontset->size())
{
if (!p.face_name.empty())
{
throw config_error("Unable to find specified font face '" + p.face_name + "' in font set: '" + p.fontset->get_name() + "'");
}
else
{
throw config_error("No valid font face could be loaded for font set: '" + p.fontset->get_name() + "'");
}
}
else
{
throw config_error("Font set '" + p.fontset->get_name() + "' does not contain any Font face-name entries");
}
}
else if (!p.face_name.empty())
{
throw config_error("Unable to find specified font face '" + p.face_name + "'");
}
else
{
throw config_error("Both font set and face name are empty!");
}
}
faces->set_character_sizes(p.text_size * scale_factor_);
faces->get_string_info(info_, itr->str, &(itr->p));
info_.add_text(itr->str);
}
return info_;
}
} //ns mapnik
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