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staticmaplite
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map cache, saver GET parameters 

git-svn-id: http://svn.code.sf.net/p/staticmaplite/code@3 3c7674d3-d6c2-4d0e-87b7-95661b9333b9
This commit is contained in:
rac98 2009-10-13 13:25:09 +00:00
parent bec9d39adc
commit a1298e267e
1 changed files with 92 additions and 18 deletions
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110
staticmap.php
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@ -1,7 +1,7 @@
<?php
/**
* staticMapLite 0.01
* staticMapLite 0.02
*
* Copyright 2009 Gerhard Koch
*
@ -32,15 +32,22 @@ Class staticMapLite {
protected $tileSize = 256;
protected $tileSrcUrl = array( 'mapnik' => '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);
}
}
}