X-Git-Url: https://git.toastfreeware.priv.at/philipp/winterrodeln/mediawiki_extensions/wrmap.git/blobdiff_plain/71e459fa687d347331f280c7dc7189ad6651974a..3ffafa56d686b5d917e707b975146787e2196c45:/wrmap.body.php diff --git a/wrmap.body.php b/wrmap.body.php index 546a778..b6bd40b 100644 --- a/wrmap.body.php +++ b/wrmap.body.php @@ -1,46 +1,170 @@ tag +// 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; +} + + +// 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 (isset($feature['wiki'])) $properties['wiki'] = (string) $feature['wiki']; + if (isset($feature['name'])) $properties['name'] = (string) $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 (isset($feature['farbe'])) $properties['strokeColor'] = (string) $feature['farbe']; + if (isset($feature['dicke'])) $properties['strokeWidth'] = (string) $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; +} + + + +class WrBaseMap { + /// Renders the tag and the 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 tag /// @param $args array - the array of attribute name/value pairs for the tag /// @param $parser Parser - the MW Parser object for the current page /// /// @return string - the html for rendering the map public static function render($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'); - // Query database - $dbr = wfGetDB(DB_SLAVE); - $res = $dbr->select('wrsledruncache', array('page_title', 'position_latitude', 'position_longitude'), array('show_in_overview', 'not under_construction')); - $sledruns = array(); - while ($sledrun = $dbr->fetchRow($res)) $sledruns[] = $sledrun; - $dbr->freeResult($res); - $parserOutput = $parser->getOutput(); $parserOutput->addHeadItem('', 'googlemaps'); $parserOutput->addModules('ext.wrmap'); - // Create
element where the map is placed in - $output = "
\n"; - foreach ($sledruns as $sledrun) { - $lat = $sledrun['position_latitude']; - $lon = $sledrun['position_longitude']; - if (!$lat || !$lon) continue; - $title = Title::newFromText($sledrun['page_title']); - $output .= "

getText()}\" data-url=\"{$title->getLocalUrl()}\" />\n"; + $json_features = array(); + + // append all sledruns as icon + if ($show_sledruns) { + $json_features = array_merge($json_features, sledruns_to_json_features()); + } + + // append all elements in the XML + try { + $json_features = array_merge($json_features, xml_to_json_features('' . $content . '')); + } catch (Exception $e) { + return htmlspecialchars($e); } + + // create final geojson + $json = array( + 'type' => 'FeatureCollection', + 'features' => $json_features + ); + $json_string = json_encode($json); + + // Create

element where the map is placed in + global $wgExtensionAssetsPath; + $output = "
"; + $output .= ""; $output .= "
\n"; return $output; } +} + +// tag +class WrMap extends WrBaseMap { } +// tag +class WrGMap extends WrBaseMap { +} + ?>