Combined layer_sledmap and layer_point to just one layer (layer_point).

[philipp/winterrodeln/mediawiki_extensions/wrmap.git] / wrmap.body.php

diff --git a/wrmap.body.php b/wrmap.body.php
index b833eb679e1720ae301982d7ba48514eaf13eb5f..77d3f93e27c9fd3dc1d129f52ce3a6a863d18582 100644 (file)
--- a/wrmap.body.php
+++ b/wrmap.body.php
@@ -1,200 +1,170 @@
 <?php
 <?php

-require_once dirname(__FILE__) . '/../wrgeo/wrgeo.body.php'; # for the function wrGeoGeoStringToGeo
-
-function wrMapParserFirstCallInit() {
-       global $wgParser;
-       // global $wrGoogleMaps; // is this necessary?
-       global $wgGoogleMapsKey;
-       $wrGoogleMaps = new WrGoogleMaps($wgGoogleMapsKey);
-       $wgParser->setHook('wrmap', 'wrmapParserHook');
-       $wgParser->setHook('wrgmap', array($wrGoogleMaps, 'render'));
-       return true;
-}
-
-
-// Tool functions
-// --------------
-
-/// List of markers - used by the functions wrMapReplaceByMarker and wrMapAfterTidy
-$wrMapMarkerList = array();

 
 

-
-/// Returns a marker for a text and back-replaces the text in wrReportAfterTidy
-function wrMapReplaceByMarker($text, $marker = 'wrMapMarker') {
-       $marker = $marker . mt_rand(1e5, 1e7);
-       global $wrMapMarkerList;
-       $wrMapMarkerList[$marker] = $text;
-       return $marker;
+// get value of key or default value if key does not exist
+// gets coordinates and returns an array of lon/lat coordinate pairs, e.g.
+// 47.12 N 11.87 E
+// 47.13 N 11.70 E
+// ->
+// array(array(11.87, 47.12), array(11.70, 47.13))
+function geo_to_coordinates($input) {
+       $matches = array();
+       $num_matches = preg_match_all('/(\d+\.?\d*)\s*N?\s+(\d+\.?\d*)\s*E?\s*/', $input, $matches);
+       $result = array();
+       for ($i=0; $i!=$num_matches; ++$i) {
+               $result[] = array(floatval($matches[2][$i]), floatval($matches[1][$i]));
+       }
+       return $result;

 }
 
 
 }
 
 

-/// Replaces the markers by its contents
-function wrMapParserAfterTidy(&$parser, &$text) {
-       // find markers in $text
-       // replace markers with actual output
-       global $wrMapMarkerList;
-       foreach ($wrMapMarkerList as $marker => $html) $text = str_replace($marker, $html, $text);
-       return true;
+// convert sledruns to geojson (http://www.geojson.org/geojson-spec.html)
+// Returns an array of features
+function sledruns_to_json_features() {
+       $json_features = array(); // result
+       $dbr = wfGetDB(DB_SLAVE);
+       $res = $dbr->select(array('wrsledruncache', 'wrreportcache'), array('wrsledruncache.page_title', 'position_latitude', 'position_longitude', 'date_report', '`condition`'), array('show_in_overview', 'not under_construction'), __METHOD__, array(), array('wrreportcache' => array('left outer join', 'wrsledruncache.page_id=wrreportcache.page_id')));
+       while ($sledrun = $dbr->fetchRow($res)) {
+               $lat = $sledrun['position_latitude'];
+               $lon = $sledrun['position_longitude'];
+               if (is_null($lat) || is_null($lon)) continue;
+               $lat = floatval($lat);
+               $lon = floatval($lon);
+               $title = Title::newFromText($sledrun['page_title']);
+               $properties = array('type' => 'sledrun', 'name' => $title->getText(), 'wiki' => $title->getLocalUrl());
+               if (!is_null($sledrun['date_report'])) $properties[] = $sledrun['date_report'];
+               if (!is_null($sledrun['condition'])) $properties[] = intval($sledrun['condition']);
+               $json_feature = array(
+                       'type' => 'feature',
+                       'geometry' => array(
+                               'type' => 'Point',
+                               'coordinates' => array($lon, $lat)
+                       ),
+                       'properties' => $properties
+               );
+               $json_features[] = $json_feature;
+       }
+       $dbr->freeResult($res);
+       return $json_features;

 }
 
 
 }
 
 

+// convert XML to geojson (http://www.geojson.org/geojson-spec.html)
+// Returns an array of features
+// TODO: Error reporting
+function xml_to_json_features($input) {
+       libxml_use_internal_errors(true); // without that, we get PHP Warnings if the $input is not well-formed
+       $xml = new SimpleXMLElement($input); // input
+       $json_features = array(); // output
+       $point_type = array('gasthaus' => 'inn', 'haltestelle' => 'busstop', 'parkplatz' => 'carpark', 'achtung' => 'attention', 'punkt' => 'point');
+       $line_type = array('rodelbahn' => 'sledrun', 'gehweg' => 'walk', 'alternative' => 'alternative', 'lift' => 'lift', 'linie' => 'line');
+       foreach ($xml as $feature) {
+               // point
+               if (in_array($feature->getName(), array_keys($point_type))) {
+                       $properties = array('type' => $point_type[$feature->getName()]);
+                       if (array_key_exists('wiki', $feature)) $properties['wiki'] = $feature['wiki'];
+                       if (array_key_exists('name', $feature)) $properties['name'] = $feature['name'];
+                       $json_feature = array(
+                               'type' => 'feature',
+                               'geometry' => array(
+                                       'type' => 'Point',
+                                       'coordinates' => geo_to_coordinates($feature)[0]
+                               ),
+                               'properties' => $properties
+                       );
+                       $json_features[] = $json_feature;
+               }
+               // line
+               if (in_array($feature->getName(), array_keys($line_type))) {
+                       $properties = array('type' => $line_type[$feature->getName()]);
+                       if (array_key_exists('farbe', $feature)) $properties['strokeColor'] = $feature['farbe'];
+                       if (array_key_exists('dicke', $feature)) $properties['strokeWidth'] = $feature['dicke'];
+                       $json_feature = array(
+                               'type' => 'feature',
+                               'geometry' => array(
+                                       'type' => 'LineString',
+                                       'coordinates' => geo_to_coordinates($feature)
+                               ),
+                               'properties' => $properties
+                       );
+                       $json_features[] = $json_feature;
+               }
+       }
+       return $json_features;
+}

 
 

-// Java script
-// -----------
-
-// Global JavaScript functions
-define(WRGMAPJSFUNCTIONS, <<<JAVASCRIPT
-<script type="text/javascript">
-//<![CDATA[
-var wrSleddingIcon = new GIcon(G_DEFAULT_ICON);
-/*
-var wrSleddingIcon = new GIcon();
-wrSleddingIcon.image = "bahn.png";
-wrSleddingIcon.shadow = "bahns.png";
-wrSleddingIcon.iconSize = new GSize(17, 17);
-wrSleddingIcon.shadowSize = new GSize(23, 23);
-wrSleddingIcon.iconAnchor = new GPoint(9, 9);
-wrSleddingIcon.infoWindowAnchor = new GPoint(9, 9);
-*/

 
 
 
 

-function wrCreateMarker(latitude, longitude, name, icon) {
-       var point = new GLatLng(latitude, longitude);
-       var marker = new GMarker(point, icon);
-       GEvent.addListener(marker, "click", function() {marker.openInfoWindowHtml("<strong>" + name + "</strong>");});
-       return marker;
-}
-//]]>
-</script>
-JAVASCRIPT
-);
-
-
-/** This class was inpired by the GoogleMaps class of the GoogleMaps extension. */
-class WrGoogleMaps {
-       /// the Google API key (obtained from
-       /// http://www.google.com/apis/maps/signup.html)
-       private $apiKey = null;
-       
-       /// How many <wrgmap> tags are on the current page?
-       private $mapsCount = 0;
-       
-       /// Constructor
-       function WrGoogleMaps($apiKey) {
-               $this->apiKey = $apiKey;
-       }
-       
-       /// Renders the <wrgmap> tag
+class WrBaseMap {
+       /// Renders the <wrgmap> tag and the <wrmap> tag.
+       /// This class would be the only class needed but as the function render() toes not provide an argument
+       /// telling which tag name called the function, a trick with two inherited classes has to be used.

        /// @param $content string - the content of the <wrgmap> tag
        /// @param $args array - the array of attribute name/value pairs for the tag
        /// @param $parser Parser - the MW Parser object for the current page
        /// @param $content string - the content of the <wrgmap> tag
        /// @param $args array - the array of attribute name/value pairs for the tag
        /// @param $parser Parser - the MW Parser object for the current page

-       /// @param $localParser Parser - the parser for parsing local content

        ///
        /// @return string - the html for rendering the map
        ///
        /// @return string - the html for rendering the map

-       function render($content, $args, &$parser) {
-               ++$this->mapsCount;
-
-               // Query database
-               $dbr = wfGetDB(DB_SLAVE);
-               $res = $dbr->select('wrsleddingcache', array('page_title', 'position_latitude', 'position_longitude'));
-               $sleddingRoutes = array();
-               while ($sleddingRoute = $dbr->fetchRow($res)) $sleddingRoutes[] = $sleddingRoute;
-               $dbr->freeResult($res);
+       public static function render($content, $args, $parser, $frame) {
+               // Unfortunately, $tagname is no argument of this function, therefore we have to use a trick with derived classes.
+               $tagname = strtolower(get_called_class()); // either wrmap or wrgmap
+               assert(in_array($tagname, array('wrmap', 'wrgmap')));
+
+               // Get center and zoom level from $args
+               if (isset($args['lat'])) $latitude = floatval($args['lat']); else $latitude = 47.267648;   // latitude as float value
+               if (isset($args['lon'])) $longitude = floatval($args['lon']); else $longitude = 11.404655; // longitude as float value
+               if (isset($args['zoom'])) $zoom = intval($args['zoom']); else $zoom = 10; // Google Zoom Level
+               if (isset($args['width'])) $width = intval($args['width']); else $width = null; // null corresponds to 100%
+               if (isset($args['height'])) $height = intval($args['height']); else $height = 450;
+               $latitude_s = sprintf('%.6F', $latitude);
+               $longitude_s = sprintf('%.6F', $longitude);
+               $width_s = is_null($width) ? '100%' : $width . 'px';
+               $height_s = $height . 'px';
+               $show_sledruns = ($tagname == 'wrgmap');
+
+               $parserOutput = $parser->getOutput();
+               $parserOutput->addHeadItem('<script type="text/javascript" src="http://maps.google.com/maps/api/js?v=3.8&amp;sensor=false"></script>', 'googlemaps');
+               $parserOutput->addModules('ext.wrmap');

                
                

-               // Load Google Maps Script and define functions
-               $output = '';
-               if ($this->mapsCount == 1) {
-                       $output .= '<script src="http://maps.google.com/maps?file=api&amp;v=2&amp;key=' . htmlspecialchars($this->apiKey) . '" type="text/javascript"></script>' . "\n";
-                       $output .= WRGMAPJSFUNCTIONS;
-               }
-                       
-               // Create <div/> element where the map is placed in
-               $mapName = 'wrgmap' . $this->mapsCount;
-               $output .= '<div id="' . $mapName . '" style="width: 100%; height: 450px; border-style:none;"></div>';
-               
-               // Return output
-               $output .= '<script type="text/javascript">' . "\n//<![CDATA[\n";
-               $output .= 'if (GBrowserIsCompatible()) {' . "\n";
-               $output .= $this->addMap($mapName);
-               foreach ($sleddingRoutes as $s) {
-                       $lat = $s['position_latitude'];
-                       $lon = $s['position_longitude'];
-                       $pageTitle = $s['page_title'];
-                       if (!$lat || !$lon) continue;
-                       $output .= $this->addJsMarker($lat, $lon, $pageTitle);
-               }
-               $output .= "}\n//]]>\n</script>\n";
-               return wrMapReplaceByMarker($output);
-       }
-       
-       // returns a string that creates a map object called 'map'
-       private function addMap($mapName) {
-               return "\tvar map = new GMap2(document.getElementById('$mapName'), {'mapTypes': [G_NORMAL_MAP, G_HYBRID_MAP, G_PHYSICAL_MAP, G_SATELLITE_MAP]});\n" .
-               "\tmap.addControl(new GLargeMapControl());\n" .
-               "\tmap.addControl(new GMapTypeControl());\n" .
-               "\tmap.addControl(new GScaleControl());\n" .
-               "\tmap.setCenter(new GLatLng(47.267648, 11.404655), 10);\n" .
-               "\tmap.setMapType(G_PHYSICAL_MAP);\n" .
-               "\tmap.enableScrollWheelZoom();\n";
-       }
-
-       // returns a string with a add marker javascript call
-       private function addJsMarker($latitude, $longitude, $pageTitle) {
-               return "\tmap.addOverlay(wrCreateMarker($latitude, $longitude, \"" . htmlspecialchars(addslashes($pageTitle)) . "\", wrSleddingIcon));\n";
-       }
-       
-}
+               $json_features = array();

 
 

+               // append all sledruns as icon
+               if ($show_sledruns) {
+                       $json_features = array_merge($json_features, sledruns_to_json_features());
+               }

 
 

-/// Format inside <wrmap>...</wrmap> has to be like this:
-///
-/// <wrmap>
-/// Rodelbahn|47.143241 N 11.208959 E|Birgitzer Alm
-/// ...
-/// </wrmap>
-///
-/// The extension produces a format like this:
-/// <googlemap version="0.9" lat="47.241016" lon="11.56517" zoom="11">
-/// 47.241731, 11.358994, Birgitzer Alm
-/// Die Birgitzer Alm ist nett
-/// 47.17607, 11.542763, Naviser Hütte
-/// Die Naviser Hütte
-/// </googlemap>
-function wrmapParserHook($input, $args, $parser) {
-       $debug = (isset($args['debug']) && $args['debug'] != '0');
-
-       $output = '';
-       $lines = explode("\n", $input);
-       $latitudes = array();
-       $longitudes = array();
-       foreach ($lines as $line) {
+               // append all elements in the XML

                try {
                try {

-                       $l = trim($line);
-                       if (strlen($l) == 0) continue;
-                       $columns = explode('|', $line);
-                       if (count($columns) != 3) throw new Exception(sprintf(utf8_encode('Die Anzahl der Spalten ist nicht 3 sondern %d'), count($columns)));
-                       $columns = list($type, $geo, $name) = $columns;
-                       if (strlen(trim($geo)) == 0) continue;
-                       list($latitude, $longitude) = wrGeoStringToGeo($geo);
-                       $latitudes[] = $latitude;
-                       $longitudes[] = $longitude;
-                       $output .= sprintf("%F, %F, %s\n", $latitude, $longitude, htmlspecialchars($name));
+                       $json_features = array_merge($json_features, xml_to_json_features('<wrmap>' . $content . '</wrmap>'));

                } catch (Exception $e) {
                } catch (Exception $e) {

-                       return sprintf(utf8_encode('Ungültige Zeile in der Koordinatenliste: <em>%s</em>. %s'), htmlspecialchars($line), htmlspecialchars($e->getMessage()));
+                       return htmlspecialchars($e);

                }
                }

+
+               // create final geojson
+               $json = array(
+                       'type' => 'FeatureCollection',
+                       'features' => $json_features
+               );
+               $json_string = json_encode($json);
+
+               // Create <div/> element where the map is placed in
+               global $wgExtensionAssetsPath;
+               $output = "<div class=\"wrmap\" style=\"width: $width_s; height: $height_s; border-style:none;\" data-center-lon=\"$longitude_s\" data-center-lat=\"$latitude_s\" data-zoom=\"$zoom\" data-img-path=\"$wgExtensionAssetsPath/wrmap/openlayers/img/\">";
+               $output .= "<script type=\"application/json\">";
+               $output .= htmlspecialchars($json_string, ENT_NOQUOTES);
+               $output .= "</script>";
+               $output .= "</div>\n";
+               
+               return $output;

        }
        }

-       if (count($latitudes) == 0) return utf8_encode('Keine Koordinaten eingetragen');
-       $minLatitude = min($latitudes);
-       $centerLat = $minLatitude + (max($latitudes) - $minLatitude) / 2;
-       $minLongitude = min($longitudes);
-       $centerLon = $minLongitude + (max($longitudes) - $minLongitude) / 2;
+}

 
 

-       // TODO: Varable zoom level
-       $output = '<googlemap version="0.9" lat="' . $centerLat . '" lon="' . $centerLon . '" type="terrain" zoom="9">'. "\n" . $output . "</googlemap>\n";

 
 

-       if ($debug) return "<pre><nowiki>$output</nowiki></pre>\n";
-       return $parser->recursiveTagParse($output);
+// <wrmap> tag
+class WrMap extends WrBaseMap {

 }
 
 
 }
 
 

+// <wrgmap> tag
+class WrGMap extends WrBaseMap {
+}
+

 ?>
 ?>