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/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2011 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
*
*****************************************************************************/
// mapnik
#include <mapnik/agg_renderer.hpp>
#include <mapnik/agg_rasterizer.hpp>
#include <mapnik/image_util.hpp>
#include <mapnik/symbolizer_helpers.hpp>
// boost
#include <boost/make_shared.hpp>
namespace mapnik {
template <typename T>
void agg_renderer<T>::process(shield_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
shield_symbolizer_helper<face_manager<freetype_engine>,
label_collision_detector4> helper(
sym, feature, prj_trans,
width_, height_,
scale_factor_,
t_, font_manager_, *detector_,
query_extent_);
text_renderer<T> ren(*current_buffer_,
font_manager_,
*(font_manager_.get_stroker()),
sym.comp_op(),
scale_factor_);
while (helper.next())
{
placements_type const& placements = helper.placements();
for (unsigned int ii = 0; ii < placements.size(); ++ii)
{
// get_marker_position returns (minx,miny) corner position,
// while (currently only) agg_renderer::render_marker newly
// expects center position;
// until all renderers and shield_symbolizer_helper are
// modified accordingly, we must adjust the position here
pixel_position pos = helper.get_marker_position(placements[ii]);
pos.x += 0.5 * helper.get_marker_width();
pos.y += 0.5 * helper.get_marker_height();
render_marker(pos,
helper.get_marker(),
helper.get_image_transform(),
sym.get_opacity(),
sym.comp_op());
ren.prepare_glyphs(placements[ii]);
ren.render(placements[ii].center);
}
}
}
template void agg_renderer<image_32>::process(shield_symbolizer const&,
mapnik::feature_impl &,
proj_transform const&);
}
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