<?php #-*-Mode: php; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
/*
    jjfMapper, a cartography program for PHP 4.
    Copyright (C) 2004  John J Foerch

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

include_once(JJFM_LIBDIR.'/built_in_icons.php');
include_once(JJFM_LIBDIR.'/geoformat.php');
include_once(JJFM_LIBDIR.'/coordial.php');


class geoformat_coordinatelist extends GeoFormat {
    var $filename;
    var $dot = false;
    var $coords = array();
    var $dotcolor = false;
    var $drawtrail = false;
    var $trailweight = 1;
    var $trailcolor = 'lightgray';//default trail color


    function parse_instructions (&$ops, &$symbols) {
        $ret = array();
        if (isset($ops['FILE']))
        {
            $ret['file'] = expand_symbols ($ops['FILE'], $symbols);
        }
        if (isset($ops['DOT']))
        {
            $ret['dot'] = $ops['DOT'];
        }
        if (isset ($ops['DOTCOLOR']))
        {
            $ret['dotcolor'] = $ops['DOTCOLOR'];
        }
        if(isset($ops['TRAILCOLOR']))
        {
            $ret['trailcolor'] = $ops['TRAILCOLOR'];
        }
        if(isset($ops['TRAILWEIGHT']))
        {
            $ret['trailweight'] = $ops['TRAILWEIGHT'];
        }
        return $ret;
    }


    
    function geoformat_coordinatelist($args) {
        if (! is_array($args) ||
            count($args) == 0)//must have at least a filename or inline data
        {
            $this->ok=false;
            $this->error = 'no args passed';
            return;
        }
        
        if (isset ($args['file'])) $this->filename = $args['file'];
        if ($this->filename == '' && isset ($args['inline']))
        {
            $content = $args['inline'];
        }
        if ($this->filename == '' && $content == '')
        {
            $this->ok=false;
            $this->error = 'neither filename nor content were passed';
            return;
        }
        
        if (isset ($args['trailweight']))
        {
            $this->trailweight = $args['trailweight'];
            $this->drawtrail = true;
        }
        if (isset ($args['trailcolor']))
        {
            $this->trailcolor = $args['trailcolor'];
            $this->drawtrail = true;
        }
        
        if (isset ($args['dot'])) $this->dot = $args['dot'];
        else if ($this->drawtrail == false) $this->dot = 'dot';

        if (isset ($args['dotcolor']))
        {
            $this->dotcolor = $args['dotcolor'];
            if ($this->dot === false) $this->dot = 'dot';
        }
        
        if ($this->filename != '')
        {
            if (! file_exists ($this->filename))
            {
                $this->ok=false;
                $this->error = 'specified file was not found.';
                return;
            }
            $f = fopen($this->filename,'r');
            $content = fread($f,filesize($this->filename));
            fclose($f);
        }
        
        $content = str_replace("\t",'',$content);
        $content = str_replace("\r\n","\n",$content);
        $content = str_replace("\r","\n",$content);
        $contentarray = explode ("\n",$content);
        
        foreach ($contentarray as $v) {
            if (strlen($v) > 0)
            {
                $c = new Coordial($v);
                $this->coords[] = $c->longitude_dc();
                $this->coords[] = $c->latitude_dc();
            }
        }
    }
    
    function bounds() {
        $minlat = $maxlat = $minlon = $maxlon = false;
        for ($a = 0; $a < count ($this->coords) * .5; ++$a) {
            $lon = $this->coords[$a * 2];
            $lat = $this->coords[$a * 2 + 1];
            if ($minlat === false || $minlat > $lat) $minlat = $lat;
            if ($minlon === false || $minlon > $lon) $minlon = $lon;
            if ($maxlat === false || $maxlat < $lat) $maxlat = $lat;
            if ($maxlon === false || $maxlon < $lon) $maxlon = $lon;
        }
        return array($minlat, $maxlat, $minlon, $maxlon);
    }
    
    function validate() {
        //TODO: write validation code for coordinatelist
        return true;
    }
    
    function draw(&$projection) {
        $geometry = array();

        if ($this->drawtrail)
        {
             $geometry['track'] = array (
                'color' => $this->trailcolor,
                'weight' => $this->trailweight,
                'data' => $this->coords
                );
        }

        $geometry['point'] = array (
            'dot' => $this->dot,
            'dotcolor' => $this->dotcolor,
            'data' => $this->coords
            );

        $projection->draw ($geometry);
    }
}

?>