wp-gpx-maps/wp-gpx-maps.php

<?php
/*
Plugin Name: WP-GPX-Maps
Plugin URI: http://www.darwinner.it/
Description: Draws a gpx track with altitude graph
Version: 1.1.8
Author: Bastianon Massimo
Author URI: http://www.pedemontanadelgrappa.it/
License: GPL
*/

//error_reporting (E_ALL);

include 'wp-gpx-maps_Utils.php';
include 'wp-gpx-maps_admin.php';

add_action( 'wp_print_scripts', 'enqueue_WP_GPX_Maps_scripts' );
add_shortcode('sgpx','handle_WP_GPX_Maps_Shortcodes');
register_activation_hook(__FILE__,'WP_GPX_Maps_install'); 
register_deactivation_hook( __FILE__, 'WP_GPX_Maps_remove');	
add_filter('plugin_action_links', 'WP_GPX_Maps_action_links', 10, 2);

function WP_GPX_Maps_action_links($links, $file) {
    static $this_plugin;
 
    if (!$this_plugin) {
        $this_plugin = plugin_basename(__FILE__);
    }
 
    // check to make sure we are on the correct plugin
    if ($file == $this_plugin) {
        // the anchor tag and href to the URL we want. For a "Settings" link, this needs to be the url of your settings page
        $settings_link = '<a href="' . get_bloginfo('wpurl') . '/wp-admin/options-general.php?page=WP-GPX-Maps">Settings</a>';
        // add the link to the list
        array_unshift($links, $settings_link);
    }
 
    return $links;
}

function enqueue_WP_GPX_Maps_scripts()
{
?>
	<script type='text/javascript' src='https://www.google.com/jsapi?ver=3.2.1'></script>
	<script type='text/javascript'>
		google.load('visualization', '1', {'packages':['corechart']});
		google.load("maps", "3", {other_params: 'sensor=false'});
	</script>
	<script type='text/javascript' src='<?php echo plugins_url('/WP-GPX-Maps.js', __FILE__) ?>'></script>	
<?php
}

function findValue($attr, $attributeName, $optionName, $defaultValue)
{
	$val = '';
	if ( isset($attr[$attributeName]) )
	{
		$val = $attr[$attributeName];
	}
	if ($val == '')
	{
		$val = get_option($optionName);
	}
	if ($val == '')
	{
		$val = $defaultValue;
	}
	return $val;
}

function handle_WP_GPX_Maps_Shortcodes($attr, $content='')
{

	$gpx = findValue($attr, "gpx", "", "");
	$w =   findValue($attr, "width", "wpgpxmaps_width", "100%");
	$mh =  findValue($attr, "mheight", "wpgpxmaps_height", "450px");
	$mt =  findValue($attr, "mtype", "wpgpxmaps_map_type", "HYBRID");
	$gh =  findValue($attr, "gheight", "wpgpxmaps_graph_height", "200px");
	$showW = findValue($attr, "waypoints", "wpgpxmaps_show_waypoint", false);
	$showSpeed = findValue($attr, "showspeed", "wpgpxmaps_show_speed", false);
	$donotreducegpx = findValue($attr, "donotreducegpx", "wpgpxmaps_donotreducegpx", false);
	$pointsoffset = findValue($attr, "pointsoffset", "wpgpxmaps_pointsoffset", 10);
	$uom =  findValue($attr, "uom", "wpgpxmaps_unit_of_measure", "0");
	$uomspeed =  findValue($attr, "uomspeed", "wpgpxmaps_unit_of_measure_speed", "0");
	$color_map =  findValue($attr, "mlinecolor", "wpgpxmaps_map_line_color", "#3366cc");
	$color_graph =  findValue($attr, "glinecolor", "wpgpxmaps_graph_line_color", "#3366cc");
	$color_graph_speed =  findValue($attr, "glinecolorspeed", "wpgpxmaps_graph_line_color_speed", "#ff0000");
		
	$r = rand(1,5000000);

	$cacheFileName = "$gpx,$w,$mh,$mt,$gh,$showW,$donotreducegpx,$pointsoffset,$showSpeed,$uom";
	
	//echo "----------cacheFileName---------$cacheFileName-------------------";	
	
	$cacheFileName = md5($gpx.$w.$mh.$mt.$gh.$showW.$donotreducegpx.$pointsoffset.$showSpeed.$uom);
	
	$gpxcache = gpxCacheFolderPath();
	
	if(!(file_exists($gpxcache) && is_dir($gpxcache)))
	{
		@mkdir($gpxcache,0755,true);
	}
	
	$gpxcache.= DIRECTORY_SEPARATOR.$cacheFileName.".tmp";
	
	// Try to load cache
	if (file_exists($gpxcache))
	{
		try {
			$cache_str = file_get_contents($gpxcache);
			$cache_obj = unserialize($cache_str);
			$points_maps = $cache_obj["points_maps"];
			$points_graph = $cache_obj["points_graph"];
			$waypoints = $cache_obj["waypoints"];
		} catch (Exception $e) {
			$points_maps= '';
			$points_graph= '';
			$waypoints= '';
		}
	}

	if ($points_maps == '')
	{
	
		$sitePath = sitePath();
		
		$gpx = trim($gpx);
		
		if (strpos($gpx, "http://") !== 0)
		{
			$gpx = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $gpx);
			$gpx = $sitePath . $gpx;
		}
		else
		{
			$gpx = downloadRemoteFile($gpx);
		}

		if ($gpx == '')
		{
			return "No gpx found";
		}
		
		$points = getPoints( $gpx, $pointsoffset, $donotreducegpx);
		$points_maps = '';
		$points_graph = '';
		$waypoints = '';
	
		foreach ($points as $p) {
			$points_maps .= '['.(float)$p[0].','.(float)$p[1].'],';
	
			$_dist = $p[3];
			$_ele = $p[2];
			
			if ($uom == '1')
			{
				// Miles and feet			
				$_dist *= 0.000621371192;
				$_ele *= 3.2808399;
			} else if ($uom == '2')
			{
				// meters / kilometers
				$_dist = $_dist/1000;
			}
			
			if ($showSpeed == true) {
			
				$_speed = $p[4]; // dafault m/s
				
				if ($uomspeed == '2') // miles/h
				{
					$_speed *= 2.2369362920544025;
				} 
				else if ($uomspeed == '1') // km/h
				{
					$_speed *= 3.6;
				} 				
			
				$points_graph .= '['.$_dist.','.$_ele.','.$_speed.'],';	
			}
			else {
				$points_graph .= '['.$_dist.','.$_ele.'],';	
			}
		}
		
		if ($showW == true)
		{
			$wpoints = getWayPoints($gpx);
			foreach ($wpoints as $p) {
				$waypoints .= '['.(float)$p[0].','.(float)$p[1].',\''.unescape($p[4]).'\',\''.unescape($p[5]).'\',\''.unescape($p[7]).'\'],';
			}
		}
		
		$p="/,$/";
		$points_maps = preg_replace($p, "", $points_maps);
		$points_graph = preg_replace($p, "", $points_graph);			
		$waypoints = preg_replace($p, "", $waypoints);
		
		if (preg_match("/^(\[0,0\],?)+$/", $points_graph)) 
		{		
			$points_graph = "";	
		} 	
		
		@file_put_contents($gpxcache, 
						   serialize(array("points_maps" => $points_maps, 
											"points_graph" => $points_graph, 
											"waypoints" => $waypoints)
									), 
						   LOCK_EX);
	    @chmod($gpxcache,0755);
	}
	
	$output = '
		<div id="wpgpxmaps_'.$r.'" style="clear:both;">
			<div id="map_'.$r.'" style="width:'.$w.'; height:'.$mh.'"></div>
			<div id="chart_'.$r.'" class="plot" style="width:'.$w.'; height:'.$gh.'"></div>
		</div>
		<script type="text/javascript">
			wpgpxmaps({ targetId : "'.$r.'",
						mapType   : "'.$mt.'",
						mapData   : ['.$points_maps.'],
						graphData : ['.$points_graph.'],
						waypoints : ['.$waypoints.'],
						unit      : "'.$uom.'",
						unitspeed : "'.$uomspeed.'",
						color1    : "'.$color_map.'",
						color2    : "'.$color_graph.'",
						color3    : "'.$color_graph_speed.'",
					   });
		</script>';	
	
	return $output;
}

function downloadRemoteFile($remoteFile)
{
	try
	{
		$ch = curl_init();
		curl_setopt($ch, CURLOPT_URL, $remoteFile); 
		curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
		curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,5);
		curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0);
		$resp = curl_exec($ch); 
		curl_close($ch);
		$tmpfname = tempnam ( '/tmp', 'gpx' );
		
		$fp = fopen($tmpfname, "w");
		fwrite($fp, $resp);
		fclose($fp);
		
		return $tmpfname;
	} catch (Exception $e) {
		return '';
	}
}

function unescape($value)
{
	$value = str_replace("'", "\'", $value);
	$value = str_replace(array("\n","\r"), "", $value);
	return $value;
}

function WP_GPX_Maps_install() {
	add_option("wpgpxmaps_width", '100%', '', 'yes');
	add_option("wpgpxmaps_graph_height", '200px', '', 'yes');
	add_option("wpgpxmaps_height", '450px', '', 'yes');
	add_option('wpgpxmaps_map_type','HYBRID','','yes');
	add_option('wpgpxmaps_show_waypoint','','','yes');
	add_option('wpgpxmaps_show_speed','','','yes');
	add_option('wpgpxmaps_pointsoffset','10','','yes');
	add_option('wpgpxmaps_donotreducegpx','true','','yes');
	add_option("wpgpxmaps_unit_of_measure", '0', '', 'yes');
	add_option("wpgpxmaps_unit_of_measure_speed", '0', '', 'yes');
	add_option("wpgpxmaps_graph_line_color", '#3366cc', '', 'yes');
	add_option("wpgpxmaps_graph_line_color_speed", '#ff0000', '', 'yes');
	add_option("wpgpxmaps_map_line_color", '#3366cc', '', 'yes');
}

function WP_GPX_Maps_remove() {
	delete_option('wpgpxmaps_width');
	delete_option('wpgpxmaps_graph_height');
	delete_option('wpgpxmaps_height');
	delete_option('wpgpxmaps_map_type');
	delete_option('wpgpxmaps_show_waypoint');
	delete_option('wpgpxmaps_show_speed');
	delete_option('wpgpxmaps_pointsoffset');
	delete_option('wpgpxmaps_donotreducegpx');
	delete_option('wpgpxmaps_unit_of_measure');
	delete_option('wpgpxmaps_unit_of_measure_speed');
	delete_option('wpgpxmaps_graph_line_color');
	delete_option('wpgpxmaps_map_line_color');
	delete_option('wpgpxmaps_graph_line_color_speed');
}

?>