mapnik/src/stroke.cpp

/*****************************************************************************
 * 
 * This file is part of Mapnik (c++ mapping toolkit)
 *
 * Copyright (C) 2006 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/stroke.hpp>

namespace mapnik
{

    static const char * line_cap_strings[] = {
        "butt",
        "square",
        "round",
        ""
    };


    static const char * line_join_strings[] = {
        "miter",
        "miter_revert",
        "round",
        "bevel",
        ""
    };

IMPLEMENT_ENUM( line_cap_e, line_cap_strings );
IMPLEMENT_ENUM( line_join_e, line_join_strings );


    stroke::stroke() 
        : c_(0,0,0),
        width_(1.0),
        opacity_(1.0),
        line_cap_(BUTT_CAP),
        line_join_(MITER_JOIN),
        dash_() {}

    stroke::stroke(color const& c, float width)
        : c_(c),
        width_(width),
        opacity_(1.0),
        line_cap_(BUTT_CAP),
        line_join_(MITER_JOIN),
        dash_() {}

    stroke::stroke(stroke const& other)
        : c_(other.c_),
        width_(other.width_),
        opacity_(other.opacity_),
        line_cap_(other.line_cap_),
        line_join_(other.line_join_),
        dash_(other.dash_) {}

    stroke & stroke::operator=(const stroke& rhs)
    {
        stroke tmp(rhs);
        swap(tmp);
        return *this;
    }

    void stroke::set_color(const color& c) 
    {
        c_=c;
    }

    color const& stroke::get_color() const
    {
        return c_;
    }

    float stroke::get_width() const
    {
        return width_;
    }
    void stroke::set_width(float w)
    {
        width_=w;
    }

    void stroke::set_opacity(float opacity)
    {    
        if (opacity > 1.0) opacity_=1.0;
        else if (opacity < 0.0) opacity_=0.0;
        else opacity_=opacity;
    }

    float stroke::get_opacity() const 
    {
        return opacity_;
    }

    void stroke::set_line_cap(line_cap_e line_cap)
    {
        line_cap_=line_cap;
    }

    line_cap_e stroke::get_line_cap() const 
    {
        return line_cap_;
    }

    void stroke::set_line_join(line_join_e line_join) 
    {
        line_join_=line_join;
    }

    line_join_e stroke::get_line_join() const 
    {
        return line_join_;
    }

    void stroke::add_dash(float dash,float gap)
    {
        dash_.push_back(std::make_pair(dash,gap));
    }
    bool stroke::has_dash() const 
    {
        return ! dash_.empty();
    }

    dash_array const& stroke::get_dash_array() const
    {
        return  dash_;
    }

    void stroke::swap(const stroke& other) throw()
    {
        c_=other.c_;
        width_=other.width_;
        opacity_=other.opacity_;
        line_cap_=other.line_cap_;
        line_join_=other.line_join_;
        dash_ = other.dash_;
    }
}