mapnik/include/mapnik/text_symbolizer.hpp

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/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2006 Artem Pavlenko
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*
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* 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,
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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
* 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
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*
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*****************************************************************************/
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//$Id$
#ifndef TEXT_SYMBOLIZER_HPP
#define TEXT_SYMBOLIZER_HPP
// stl
#include <string>
// boost
#include <boost/tuple/tuple.hpp>
// mapnik
#include <mapnik/color.hpp>
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namespace mapnik
{
enum label_placement_e {
point_placement=1,
line_placement=2
};
typedef boost::tuple<double,double> position;
struct MAPNIK_DECL text_symbolizer
{
text_symbolizer(std::string const& name,std::string const& face_name,
unsigned size,Color const& fill);
text_symbolizer(text_symbolizer const& rhs);
text_symbolizer& operator=(text_symbolizer const& rhs);
std::string const& get_name() const;
unsigned get_text_ratio() const; // target ratio for text bounding box in pixels
void set_text_ratio(unsigned ratio);
unsigned get_wrap_width() const; // width to wrap text at, or trigger ratio
void set_wrap_width(unsigned ratio);
unsigned get_label_spacing() const; // spacing between repeated labels on lines
void set_label_spacing(unsigned spacing);
unsigned get_label_position_tolerance() const; //distance the label can be moved on the line to fit, if 0 the default is used
void set_label_position_tolerance(unsigned tolerance);
bool get_force_odd_labels() const; // try render an odd amount of labels
void set_force_odd_labels(bool force);
double get_max_char_angle_delta() const; // maximum change in angle between adjacent characters
void set_max_char_angle_delta(double angle);
unsigned get_text_size() const;
std::string const& get_face_name() const;
Color const& get_fill() const;
void set_halo_fill(Color const& fill);
Color const& get_halo_fill() const;
void set_halo_radius(unsigned radius);
unsigned get_halo_radius() const;
void set_label_placement(label_placement_e label_p);
label_placement_e get_label_placement() const;
void set_anchor(double x, double y);
position const& get_anchor() const;
void set_displacement(double x, double y);
position const& get_displacement() const;
void set_avoid_edges(bool avoid);
bool get_avoid_edges() const;
private:
std::string name_;
std::string face_name_;
unsigned size_;
unsigned text_ratio_;
unsigned wrap_width_;
unsigned label_spacing_;
unsigned label_position_tolerance_;
bool force_odd_labels_;
double max_char_angle_delta_;
Color fill_;
Color halo_fill_;
unsigned halo_radius_;
label_placement_e label_p_;
position anchor_;
position displacement_;
bool avoid_edges_;
};
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}
#endif //TEXT_SYMBOLIZER_HPP