From a1298e267e703ac59b155a4d11182b5d0779e42f Mon Sep 17 00:00:00 2001 From: rac98 Date: Tue, 13 Oct 2009 13:25:09 +0000 Subject: [PATCH] map cache, saver GET parameters git-svn-id: http://svn.code.sf.net/p/staticmaplite/code@3 3c7674d3-d6c2-4d0e-87b7-95661b9333b9 --- staticmap.php | 110 +++++++++++++++++++++++++++++++++++++++++--------- 1 file changed, 92 insertions(+), 18 deletions(-) diff --git a/staticmap.php b/staticmap.php index 4392ae3..a376fbe 100644 --- a/staticmap.php +++ b/staticmap.php @@ -1,7 +1,7 @@ 'http://tile.openstreetmap.org/{Z}/{X}/{Y}.png', - 'osmarenderer' => 'http://c.tah.openstreetmap.org/Tiles/tile/{Z}/{X}/{Y}.png', - 'cycle' => 'http://c.andy.sandbox.cloudmade.com/tiles/cycle/{Z}/{X}/{Y}.png' + 'osmarenderer' => 'http://c.tah.openstreetmap.org/Tiles/tile/{Z}/{X}/{Y}.png', + 'cycle' => 'http://c.andy.sandbox.cloudmade.com/tiles/cycle/{Z}/{X}/{Y}.png' ); + protected $tileDefaultSrc = 'mapnik'; protected $markerBaseDir = 'images/markers'; protected $osmLogo = 'images/osm_logo.png'; protected $useTileCache = true; - protected $tileCacheBaseDir = 'cache'; + protected $tileCacheBaseDir = 'cache/tiles'; + + protected $useMapCache = true; + protected $mapCacheBaseDir = 'cache/maps'; + protected $mapCacheID = ''; + protected $mapCacheFile = ''; + protected $mapCacheExtension = 'png'; protected $zoom, $lat, $lon, $width, $height, $markers, $image, $maptype; protected $centerX, $centerY, $offsetX, $offsetY; @@ -49,8 +56,8 @@ Class staticMapLite { $this->zoom = 0; $this->lat = 0; $this->lon = 0; - $this->width = 0; - $this->height = 0; + $this->width = 500; + $this->height = 350; $this->markers = array(); $this->maptype = $this->tileDefaultSrc; } @@ -58,16 +65,31 @@ Class staticMapLite { public function parseParams(){ global $_GET; + // get zoom from GET paramter $this->zoom = $_GET['zoom']?intval($_GET['zoom']):0; if($this->zoom>18)$this->zoom = 18; + // get lat and lon from GET paramter list($this->lat,$this->lon) = split(',',$_GET['center']); + $this->lat = floatval($this->lat); + $this->lon = floatval($this->lon); + // get zoom from GET paramter if($_GET['size']){ list($this->width, $this->height) = split('x',$_GET['size']); + $this->width = intval($this->width); + $this->height = intval($this->height); } if($_GET['markers']){ - $this->markers = split('%7C|\|',$_GET['markers']); + $markers = split('%7C|\|',$_GET['markers']); + foreach($markers as $marker){ + list($markerLat, $markerLon, $markerImage) = split(',',$marker); + $markerLat = floatval($markerLat); + $markerLon = floatval($markerLon); + $markerImage = basename($markerImage); + $this->markers[] = array('lat'=>$markerLat, 'lon'=>$markerLon, 'image'=>$markerImage); + } + } if($_GET['maptype']){ if(array_key_exists($_GET['maptype'],$this->tileSrcUrl)) $this->maptype = $_GET['maptype']; @@ -116,7 +138,9 @@ Class staticMapLite { public function placeMarkers(){ foreach($this->markers as $marker){ - list($markerLat, $markerLon, $markerImage) = split(',',$marker); + $markerLat = $marker['lat']; + $markerLon = $marker['lon']; + $markerImage = $marker['image']; $markerIndex++; $markerFilename = $markerImage?(file_exists($this->markerBaseDir.'/'.$markerImage.".png")?$markerImage:'lightblue'.$markerIndex):'lightblue'.$markerIndex; if(file_exists($this->markerBaseDir.'/'.$markerFilename.".png")){ @@ -130,7 +154,7 @@ Class staticMapLite { imagecopy($this->image, $markerImg, $destX, $destY, 0, 0, imagesx($markerImg), imagesy($markerImg)); - } + }; } @@ -145,6 +169,26 @@ Class staticMapLite { return file_get_contents($filename); } } + + public function checkMapCache(){ + $this->mapCacheID = md5($this->serializeParams()); + $filename = $this->mapCacheIDToFilename(); + if(file_exists($filename)) return true; + } + + public function serializeParams(){ + return join("&",array($this->zoom,$this->lat,$this->lon,$this->width,$this->height, serialize($this->markers),$this->maptype)); + } + + public function mapCacheIDToFilename(){ + if(!$this->mapCacheFile){ + $this->mapCacheFile = $this->mapCacheBaseDir."/".substr($this->mapCacheID,0,2)."/".substr($this->mapCacheID,2,2)."/".substr($this->mapCacheID,4); + } + return $this->mapCacheFile.".".$this->mapCacheExtension; + } + + + public function mkdir_recursive($pathname, $mode){ is_dir(dirname($pathname)) || $this->mkdir_recursive(dirname($pathname), $mode); return is_dir($pathname) || @mkdir($pathname, $mode); @@ -175,20 +219,50 @@ Class staticMapLite { imagecopy($this->image, $logoImg, imagesx($this->image)-imagesx($logoImg), imagesy($this->image)-imagesy($logoImg), 0, 0, imagesx($logoImg), imagesy($logoImg)); } - - public function showMap(){ - $this->parseParams(); - $this->initCoords(); - $this->createBaseMap(); - if(count($this->markers))$this->placeMarkers(); - if($this->osmLogo) $this->copyrightNotice(); + + public function sendHeader(){ header('Content-Type: image/png'); $expires = 60*60*24*14; header("Pragma: public"); header("Cache-Control: maxage=".$expires); header('Expires: ' . gmdate('D, d M Y H:i:s', time()+$expires) . ' GMT'); - return imagepng($this->image); - + } + + public function makeMap(){ + $this->initCoords(); + $this->createBaseMap(); + if(count($this->markers))$this->placeMarkers(); + if($this->osmLogo) $this->copyrightNotice(); + } + + public function showMap(){ + $this->parseParams(); + if($this->useMapCache){ + // use map cache, so check cache for map + if(!$this->checkMapCache()){ + // map is not in cache, needs to be build + $this->makeMap(); + $this->mkdir_recursive(dirname($this->mapCacheIDToFilename()),0777); + imagepng($this->image,$this->mapCacheIDToFilename(),9); + $this->sendHeader(); + if(file_exists($this->mapCacheIDToFilename())){ + return file_get_contents($this->mapCacheIDToFilename()); + } else { + return imagepng($this->image); + } + } else { + // map is in cache + $this->sendHeader(); + return file_get_contents($this->mapCacheIDToFilename()); + } + + } else { + // no cache, make map, send headers and deliver png + $this->makeMap(); + $this->sendHeader(); + return imagepng($this->image); + + } } }