[Plugin: RomeLuv Google Maps for WordPress] Modify for multiple icons

I made some change

advantage: you can use multiple icons in global map, it automatic link to the icons.png. you just define the icon folder.

disadvantage: i remove the thumbnail picture.

Installation: Just copy code below…replace to the file romeluv-maps.php after you install

<?php
/*
Plugin Name: RomeLuv Google Maps for WordPress
Plugin URI: http://www.romeluv.com/maps-plugin-testrun/
Description:  Supercharge your posts with Google Maps! Places a Google Map inside every post you want just filling the Address field while editing a post. Generates a Global Map with all the posts,   in a standard WordPress Page via a simple shortcode: [GLOBALMAP] . Easy to hack for your custom Google Maps implementation
Version: 1.3.3
Author: RomeLuv
Author URI: http://www.romeluv.com
License: GPL v2

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; version 2 of the License.

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. 

*/

//defaults
if (strlen (get_option ('global_romeluv_markers_url')) <8) update_option('global_romeluv_markers_url','http://www.amatacity.com/guide/icons/');
if (  (get_option ('global_romeluv_markerwidth')) <1) update_option('global_romeluv_markerwidth','30');
if (  (get_option ('global_romeluv_markerheight')) <1) update_option('global_romeluv_markerheight','30');
if (  (get_option ('global_romeluv_center_latitute')) <1) update_option('global_romeluv_center_latitute','12.985991');
if (  (get_option ('global_romeluv_center_longitute')) <1) update_option('global_romeluv_center_longitute','101.103745');

/* Define the custom box */

// WP 3.0+
// add_action( 'add_meta_boxes', 'romeluv_maps_add_custom_box' );

// backwards compatible
add_action( 'admin_init', 'romeluv_maps_add_custom_box', 1 );

/* Do something with the data entered */
add_action( 'save_post', 'romeluv_maps_save_postdata' );

/* Adds a box to the main column on the Post and Page edit screens */
function romeluv_maps_add_custom_box() {
    add_meta_box(
        'romeluv_maps_sectionid',
        __( 'Maps', 'romeluv_maps_textdomain' ),
        'romeluv_maps_inner_custom_box',
        'post'
    );

}

/* Prints the box content */
function romeluv_maps_inner_custom_box() {
global $post;
  // Use nonce for verification
  wp_nonce_field( plugin_basename( __FILE__ ), 'romeluv_maps_noncename' );

  // The actual fields for data entry
  echo '<label for="romeluv_maps_address_field">';
       _e("Address", 'romeluv_maps_textdomain' );
  echo '</label> ';
  echo '<input type="text" id="romeluv_maps_address_field" name="romeluv_maps_address_field" value="'. get_post_meta($post->ID,'address',true).'" size="35" /> example: Viale Kant 2, Roma <BR>';

  echo '<label for="romeluv_maps_latlng_field">';
       _e("LatLng", 'romeluv_maps_textdomain' );
  echo '</label> ';
  echo '<input type="text" id="romeluv_maps_latlng_field" name="romeluv_maps_latlng_field" value="'. get_post_meta($post->ID,'latlng',true).'" size="35" /> example: 10.100000, 103.000001 <BR>';

  echo '<label for="romeluv_maps_type_field">';
       _e("Type", 'romeluv_maps_textdomain' );
  echo '</label> ';
  echo '<input type="text" id="romeluv_maps_type_field" name="romeluv_maps_type_field" value="'. get_post_meta($post->ID,'type',true).'" size="35" /> example: Bridge';

}

/* When the post is saved, saves our custom data */
function romeluv_maps_save_postdata( $post_id ) {
  // verify if this is an auto save routine.
  // If it is our form has not been submitted, so we dont want to do anything
  if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE )
      return;

  // verify this came from the our screen and with proper authorization,
  // because save_post can be triggered at other times

  if ( !wp_verify_nonce( $_POST['romeluv_maps_noncename'], plugin_basename( __FILE__ ) ) )
      return;

  // Check permissions
  if ( 'page' == $_POST['post_type'] )
  {
    if ( !current_user_can( 'edit_page', $post_id ) )
        return;
  }
  else
  {
    if ( !current_user_can( 'edit_post', $post_id ) )
        return;
  }

  // OK, we're authenticated: we need to find and save the data

 $addressdata=$_POST['romeluv_maps_address_field'];
 $latlngdata=$_POST['romeluv_maps_latlng_field'];
 $typedata=$_POST['romeluv_maps_type_field'];

	update_post_meta($_POST['post_ID'], 'address', $addressdata);
	update_post_meta($_POST['post_ID'], 'latlng', $latlngdata);
	update_post_meta($_POST['post_ID'], 'type', $typedata);
  // Do something with $mydata
  // probably using add_post_meta(), update_post_meta(), or
  // a custom table (see Further Reading section below)

   return $mydata;
}

if (get_option('single_romeluv_mapposition') !=2) add_filter('the_content', 'romeluv_single_map'); ///adds a map in single posts right before the content

add_action('admin_menu', 'rl_google_maps_api_menu');

function rl_google_maps_api_menu() {
add_options_page('Google Maps API Key', 'RomeLuv Google Maps API Key & Map settings', 'manage_options', 'romeluv-maps-identifier', 'gma_romeluv_plugin_options');
}

function gma_romeluv_plugin_options() {
?>
<div style='margin:15px;'>
<h2>RomeLuv Google Maps</h2>
<?php
if (array_key_exists('maps_key',$_POST)) {

update_option('maps_key',$_POST['maps_key']);
update_option('single_romeluv_mapwidth',$_POST['single_romeluv_mapwidth']);
update_option('single_romeluv_mapheight',$_POST['single_romeluv_mapheight']);
update_option('single_romeluv_mapstyle',$_POST['single_romeluv_mapstyle']);
update_option('global_romeluv_mapwidth',$_POST['global_romeluv_mapwidth']);
update_option('global_romeluv_mapheight',$_POST['global_romeluv_mapheight']);
update_option('global_romeluv_mapstyle',$_POST['global_romeluv_mapstyle']);
update_option('global_romeluv_markers',$_POST['global_romeluv_markers']);
update_option('single_romeluv_mapposition',$_POST['single_romeluv_mapposition']);
update_option('global_romeluv_markers_url',$_POST['global_romeluv_markers_url']);

update_option('global_romeluv_markerwidth',$_POST['global_romeluv_markerwidth']);
update_option('global_romeluv_markerheight',$_POST['global_romeluv_markerheight']);
update_option('global_romeluv_center_latitute',$_POST['global_romeluv_center_latitute']);
update_option('global_romeluv_center_longitute',$_POST['global_romeluv_center_longitute']);

if (strlen (get_option ('global_romeluv_markers_url')) <8) update_option('global_romeluv_markers_url','http://www.amatacity.com/guide/icons/');
if (  (get_option ('global_romeluv_markerwidth')) <1) update_option('global_romeluv_markerwidth','30');
if (  (get_option ('global_romeluv_markerheight')) <1) update_option('global_romeluv_markerheight','30');

}
?>
<form method="post" action="<?php echo str_replace( '%7E', '~', $_SERVER['REQUEST_URI']); ?>">
<?php
settings_fields('maps_key');
?>

<style>
#rlmoptions {}
#rlmoptions tr {height:35px}

#rlmoptions td {text-align:left}
#rlmoptions th {text-align:left;width:250px;}
</style>
<p><small>Consider viewing a quick <a target="new" href='http://screencast.com/t/pmbe87rbbF34'>introduction video</a> for getting started. </small></p>
<p><i>Only the first setting is vital for getting started: if you need one,  <a target="new" href="http://code.google.com/apis/maps/signup.html">Get a free Google Maps API Key from Google!</a>
 </i></p>
<table id='rlmoptions'>
<tr valign="top">
<th scope="row">Google Maps API Key</th>
<td > <input type="text" size="40" name="maps_key" value="<?php echo get_option('maps_key'); ?>" /> <b>Mandatory.</b><br /><br /><br /><br />
</td>
</tr>
<tr valign="top">
<th scope="row">Single posts: map position</th>
<td>
<select name="single_romeluv_mapposition">
  <option  value="<?php echo get_option('single_romeluv_mapposition'); ?>" >  <?php $map_position= get_option('single_romeluv_mapposition');
  if ($map_position==0) echo "Automatically place map BEFORE the content";
   if ($map_position==1) echo "Automatically place map AFTER the content";
    if ($map_position==2) echo "Manual map placement via PHP tag";
  ?>  </option>
  <option value="0">Automatically place map BEFORE the content</option>
  <option value="1">Automatically place map AFTER the content</option>
  <option value="2">Manual map placement via PHP code</option>
</select>
     (a <a href='http://www.romeluv.com/maps-plugin-testrun/2011/06/27/manual-code/'>PHP tag</a> is available too)   </td>
</tr>
<th scope="row">Single posts: map width</th>
<td><input type="text" size="3" name="single_romeluv_mapwidth" value="<?php echo get_option('single_romeluv_mapwidth'); ?>" /> px (leave empty for 100%)</td>
</tr>
<tr valign="top">
<th scope="row">Single posts: map height</th>
<td><input type="text" size="3" name="single_romeluv_mapheight" value="<?php echo get_option('single_romeluv_mapheight'); ?>" /> px (if empty, defaults to 320px)</td>
</tr>
<tr valign="top">
<th scope="row">Single posts: additional CSS styling </th>
<td><input type="text" size="40" name="single_romeluv_mapstyle" value="<?php echo get_option('single_romeluv_mapstyle'); ?>" /> (example: <b>float:right</b>)</td>
</tr>
<tr valign="top">
<th scope="row">Global Map: map width</th>
<td><input type="text" size="3" name="global_romeluv_mapwidth" value="<?php echo get_option('global_romeluv_mapwidth'); ?>" /> px (leave empty for 100%)</td>
</tr>
<tr valign="top">
<th scope="row">Global Map: map height</th>
<td><input type="text" size="3" name="global_romeluv_mapheight" value="<?php echo get_option('global_romeluv_mapheight'); ?>" /> px (if empty, defaults to 320px)</td>
</tr>
<tr valign="top">
<th scope="row">Global Map: additional CSS styling </th>
<td><input type="text" size="40" name="global_romeluv_mapstyle" value="<?php echo get_option('global_romeluv_mapstyle'); ?>" /> (example: <b>float:right</b>)</td>
</tr>
<tr valign="top">
<th scope="row">Global Map Markers:  </th>
<td>
<select name="global_romeluv_markers">
  <option  value="<?php echo get_option('global_romeluv_markers'); ?>" >  <?php $global_romeluv_markers= get_option('global_romeluv_markers');
  if ($global_romeluv_markers==0) echo "Your custom image URL  ";
   if ($global_romeluv_markers==1) echo "Use post thumbnail if available";
  ?>  </option>
  <option value="0">Your custom image URL</option>
  <option value="1">Use post thumbnail if available</option>
</select>
</td>
</tr>
<tr valign="top">
<th scope="row">Your  image URL for the map markers </th>
<td><input type="text" size="40" name="global_romeluv_markers_url" value="<?php   echo get_option('global_romeluv_markers_url');  ?>" /> (example:  http://maps.google.com/mapfiles/kml/pal2/icons/) </td>
</tr>
<tr valign="top">
<th scope="row">Global Map: Marker width</th>
<td><input type="text" size="3" name="global_romeluv_markerwidth" value="<?php echo get_option('global_romeluv_markerwidth'); ?>" /> px  </td>
</tr>
<tr valign="top">
<th scope="row">Global Map: Marker height</th>
<td><input type="text" size="3" name="global_romeluv_markerheight" value="<?php echo get_option('global_romeluv_markerheight'); ?>" /> px  </td>
</tr>
<tr valign="top">
<th scope="row">Global Map Center: Latitute</th>
<td><input type="text" size="9" name="global_romeluv_center_latitute" value="<?php echo get_option('global_romeluv_center_latitute'); ?>" /></td>
</tr>
<tr valign="top">
<th scope="row">Global Map Center: Longitute</th>
<td><input type="text" size="10" name="global_romeluv_center_longitute" value="<?php echo get_option('global_romeluv_center_longitute'); ?>" /></td>
</tr>
</table>
<input type="hidden" name="page_options" value="maps_key" />
<p>
<input type="submit" value="<?php _e('Save Changes') ?>" />
</p>
</form>
</div>
<?
}

function romeluv_maps_handle_savepost() {
	global  $post_ID;
	 //geocode with service the address
  $addressdata=get_post_meta($post_ID,'address',true);
  $latlngdata=get_post_meta($post_ID,'latlng',true);
  $typedata=get_post_meta($post_ID,'type',true);

	if (strlen($latlngdata)<8) {
		if (strlen($addressdata)<8) {
					update_post_meta($post_ID, 'longitude', 0);
				  update_post_meta($post_ID, 'latitude', 0);
				  return ('');

				}
    $addressdata=str_replace(' ','+',$addressdata);
    $address1 ="http://maps.google.com/maps/geo?q=1020+".$addressdata."&output=xml&key=".get_option('maps_key');
	  $page = file_get_contents($address1);
	  $xml = new SimpleXMLElement($page);
	   list($longitude, $latitude, $altitude) = explode(",",$xml->Response->Placemark->Point->coordinates);
  }else{
    list($latitude,$longitude) = explode(",",$latlngdata);
  }
	update_post_meta($post_ID, 'longitude', $longitude);
	update_post_meta($post_ID, 'latitude', $latitude);
}

add_action('save_post', 'romeluv_maps_handle_savepost');

function romeluv_single_map($post_content_html)
{
  global $romeluv_single_map_done;
  if ($romeluv_single_map_done) return $post_content_html; else $romeluv_single_map_done=TRUE;
	if (!is_single()) return $post_content_html;
        //return "".$post_content_html;
	global $wpdb,$post,$mapheight;
	$savepost=$post;
  $mapwidth=get_option('single_romeluv_mapwidth');
  $mapheight=get_option('single_romeluv_mapheight');
	if ($mapwidth<40) $mapwidth="100%"; else $mapwidth.='px';
	if ($mapheight<40) $mapheight="320px"; else $mapheight.='px';

  ///get values from post custom fields
  $address=get_post_meta($post->ID,'address',true);
  $latitude=get_post_meta($post->ID, 'latitude');
  $longitude=get_post_meta($post->ID, 'longitude');
  $latitude=$latitude[0]; $longitude=$longitude[0];

  if ($latitude!=0 OR $longitude!=0) {
  //initialize the map
		  $out=' <!-- single post map created by RomeLuv Google Maps http://www.romeluv.com/maps-plugin-testrun/ -->
			    <script src="http://maps.google.com/maps?file=api&v=3&sensor=false&key='. get_option('maps_key').'" type="text/javascript"></script>

			     <script src="http://maps.google.com/maps/api/js?sensor=false"
				     type="text/javascript"></script>

			   <div id="single-post-map" style="width: '.$mapwidth.'; height:'. $mapheight.';  '.get_option('single_romeluv_mapstyle').'"></div>

			     <script type="text/javascript">

			       var map = new google.maps.Map(document.getElementById("single-post-map"), {
             scrollwheel: false,
    				 zoom: 16,
		    		 center: new google.maps.LatLng('.$latitude.', '.$longitude.'),
				     mapTypeId: google.maps.MapTypeId.SATELLITE
			       });

			       var marker;
	       ';
	      //add marker to the map and the popup
		$out.= '
		    marker = new google.maps.Marker({
		      position: new google.maps.LatLng('.$latitude.', '.$longitude.'),
		      map: map,
          animation: google.maps.Animation.DROP
		    });
	     ';

      //close the map
	$out.='   </script> ';

      }  //end if

	 $post=$savepost;

    ///    $out now represents the HTML / JS code of the Google map
	if (get_option('single_romeluv_mapposition') ==1) return  $post_content_html.$out; //places the single map BEFORE the content. INVERT that for having the map after the content if you need so
 	if (get_option('single_romeluv_mapposition') ==2) return  $out; //places the single map only when called by the php code:
                                                                    /// <?php global $romeluv_single_map_done;$romeluv_single_map_done=FALSE; if (function_exists(romeluv_single_map)) echo romeluv_single_map('');
  //default
  return $out.$post_content_html; //places the single map BEFORE the content.
	} //end function single map

add_shortcode('GLOBALMAP', 'romeluv_global_map');

function romeluv_global_map($atts)
{
    if (is_single()) return('');  // avoid making trouble if looking at a single post. The  GLOBALMAP shorttag is meant to be used in pages only.

    //global $romeluv_global_map_done;
    //  if ($romeluv_global_map_done) return ''; else $romeluv_global_map_done=TRUE; //allow only one map per page

    global $wpdb,$post;
    $stackType = array();

    $savepost=$post;

    ////query all the posts to display on the global map
     $querystr = "
       SELECT wposts.*
       FROM $wpdb->posts wposts
       WHERE  wposts.post_status = 'publish'
       AND wposts.post_type = 'post' ". $whereadditional ."
       ORDER BY wposts.post_date DESC
    ";
    //echo $querystr; //useful for debugging your custom query
    $result_posts = $wpdb->get_results($querystr, OBJECT);

    if ($result_posts):

    if (isset($_GET[cat]))  echo '<h3 id="map-category-heading">'.get_cat_name($_GET[cat]).'</h3>';

    $mapwidth=get_option('global_romeluv_mapwidth');
    $mapheight=get_option('global_romeluv_mapheight');
    $mapcenterlat=get_option('global_romeluv_center_latitute');
    $mapcenterlng=get_option('global_romeluv_center_longitute');
    if ($mapwidth<40) $mapwidth="100%"; else $mapwidth.='px';
    if ($mapheight<40) $mapheight="320px"; else $mapheight.='px';

    $out='<!-- global post map created by RomeLuv Google Maps for WordPress http://www.romeluv.com/maps-plugin-testrun/ -->
           <script src="http://maps.google.com/maps?file=api&v=3&sensor=false&key='. get_option('maps_key').'" type="text/javascript"></script>
           <script src="http://maps.google.com/maps/api/js?sensor=false"  type="text/javascript"></script>
           <div id="romeluv-global-map" style="width: '.$mapwidth.'; height:'. $mapheight.'; '.get_option('single_romeluv_mapstyle').' "></div>
           <script type="text/javascript">
              // this variable will collect the html which will eventually be placed in the side_bar
              var gmarkers = [];
              var gicons = [];
              var map = null;
              var html = [];

              // start map
              var map = new google.maps.Map(document.getElementById("romeluv-global-map"), {
                scrollwheel: false,
                zoom: 14,
                center: new google.maps.LatLng('.$mapcenterlat.','.$mapcenterlng.'),
                mapTypeId: google.maps.MapTypeId.ROADMAP
              });

              var infowindow = new google.maps.InfoWindow();
              var marker, i;

              function getMarkerImage(iconType) {
                if (!gicons[iconType]) {
                  gicons[iconType] = new google.maps.MarkerImage("'.get_option('global_romeluv_markers_url').'"+iconType+".png", null, null, null, new google.maps.Size('.get_option('global_romeluv_markerwidth').','.get_option('global_romeluv_markerheight').'));'.'
                }
                return gicons[iconType];
              }

              // A function to create the marker and set up the event window
              function createMarker(mapLat,mapLng,name,html,mapType) {
                var contentString = html;
                var marker = new google.maps.Marker({
                  position: new google.maps.LatLng(mapLat,mapLng),
                  map: map,
                  icon: gicons[mapType]
                });

                // === Store the category and name info as a marker properties ===
                marker.mycategory = mapType;
                marker.myname = name;
                gmarkers.push(marker);

                // add listener
                google.maps.event.addListener(marker, "mousedown", (function(marker, i) {
                return function() {
                  infowindow.setContent(contentString);
                  infowindow.open(map,marker);
                }
                })(marker, i));
              }
          //START Checkbox feature
          // == shows all markers of a particular category, and ensures the checkbox is checked ==
          function show(category) {
              for (var i=0; i<gmarkers.length; i++) {
                  if (gmarkers[i].mycategory == category) {
                      gmarkers[i].setVisible(true);
                   }
              }
              // == check the checkbox ==
              document.getElementById(category+"box").checked = true;
          }

          // == hides all markers of a particular category, and ensures the checkbox is cleared ==
          function hide(category) {
               for (var i=0; i<gmarkers.length; i++) {
                   if (gmarkers[i].mycategory == category) {
                      gmarkers[i].setVisible(false);
                    }
               }

              // == clear the checkbox ==
              document.getElementById(category+"box").checked = false;
              // == close the info window, in case its open on a marker that we just hid
              infowindow.close();
          }

          // == a checkbox has been clicked ==
          function boxclick(box,category) {
              if (box.checked) {
                 show(category);
              } else {
                 hide(category);
              }
             // == rebuild the side bar
             //makeSidebar(0);
          }

          //END of Checkbox feature
           ';

     if(is_category()  ){
       $cat_ID = get_query_var('cat');
     }

     $count=0;
     foreach ($result_posts as $post): 

          $count++;
          if (isset($_GET[cat])) if (!in_category($_GET[cat],$post->ID)) continue; //this allows category filtering adding the $_GET parameter ?cat=xx
          if (is_category()) { if (!in_category($cat_ID,$post->ID)) continue;  }   //skip posts if viewing a category page, if those do not match the current category

          $address=get_post_meta($post->ID,'address',true);
          $latitude=get_post_meta($post->ID, 'latitude');
          $longitude=get_post_meta($post->ID, 'longitude');
          $latitude=$latitude[0]; $longitude=$longitude[0];

          if (!$latitude>0 or !$longitude>0) { //no data set: update the post custom fields according to the address
            // $post_ID=$post->ID;
            if ($_GET[geocode_all_posts]==1){
              romeluv_maps_handle_savepost();   // if you want to re-geocode all posts -
              //i.e. you started with an old blog with a custom field name 'address' and you want to geocode all that in a snap,
              /// call the url of a map page with the ?geocode_all_posts=1 parameter

              $latitude=get_post_meta($post->ID, 'latitude');
              $longitude=get_post_meta($post->ID, 'longitude');
              $latitude=$latitude[0]; $longitude=$longitude[0];
            }
          }
          if ($latitude!=0 OR $longitude!=0) {
					  $image_url=FALSE;$std_thumb=FALSE;
            $image_url= wp_get_attachment_image_src(get_post_thumbnail_id(), 'thumbnail');
					  if (!$image_url or get_option('global_romeluv_markers')==0 ) {
					     $myMapType = get_post_meta($post->ID, 'type',true);
					     if ($myMapType == "") $myMapType = "others";
               $std_thumb=TRUE;
            }

            $out.= 'html= "<p style=\'width:95%\'><a class=\'romeluv-google-map-link\' href=\''.get_permalink($post->ID).'\'><b>'.get_the_title().'</b></a><br/>';

            ///if thumbnail image is defined in the theme, show it in the map popups.
            if (!$std_thumb)  $out.="<a href='".get_permalink($post->ID)."'><img  src='".$image_url[0]."' ></a><br />";
            $out.='<br />'."Address: <b>".get_post_meta($post->ID,'address',true).' </b><br /><br />';

            ///list post categories
            foreach((get_the_category()) as $category) {
                              $out.= '<i>'.$category->cat_name . '</i>  ';
            }
            if (!in_array($myMapType,$stackType)) {
              array_push($stackType,$myMapType);
            }

            $out.='</p>";
           getMarkerImage("'.$myMapType.'");
           var marker = createMarker('.$latitude.','.$longitude.',"'.get_post_meta($post->ID,'address',true).'",html,"'.$myMapType.'");
           ';
          }

    endforeach;  

    $out.='
     </script>
     ';

     //Make a check boxes feature
    $out.='<div id="box_form" style="width: 100%"><form action="#">
    ';
    foreach ($stackType as $itemType) {
        $out.='<input type="checkbox" checked = "checked" id="'.$itemType.'box" onclick="boxclick(this,\''.$itemType.'\')" />'.$itemType.' |
';
    }
    $out.='</form>
    </div>';
     //End of check boxes feature

    else : 

    $out.='No elements to show on the map.';

    endif; ?>

    <?php
     $post=$savepost;
    return $out;
	}

?>

http://ww.wp.xz.cn/extend/plugins/romeluv-google-maps-for-wordpress/