staticmaplite/src/Printer.php

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<?php
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namespace StaticMapLite;
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use StaticMapLite\Canvas\Canvas;
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use StaticMapLite\Element\Marker\Marker;
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use StaticMapLite\TileResolver\CachedTileResolver;
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class Printer
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{
protected $maxWidth = 1024;
protected $maxHeight = 1024;
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protected $tileResolver = null;
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/** @var Canvas $canvas */
protected $canvas = null;
protected $tileSize = 256;
protected $tileSrcUrl = [
'mapnik' => 'http://tile.openstreetmap.org/{z}/{x}/{y}.png',
'osmarenderer' => 'http://otile1.mqcdn.com/tiles/1.0.0/osm/{z}/{x}/{y}.png',
'cycle' => 'http://a.tile.opencyclemap.org/cycle/{z}/{x}/{y}.png',
'wikimedia-intl' => 'https://maps.wikimedia.org/osm-intl/{z}/{x}/{y}.png',
];
protected $tileDefaultSrc = 'mapnik';
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protected $markerBaseDir = '../images/markers';
protected $osmLogo = '../images/osm_logo.png';
protected $markerPrototypes = array(
// found at http://www.mapito.net/map-marker-icons.html
'lighblue' => array('regex' => '/^lightblue([0-9]+)$/',
'extension' => '.png',
'shadow' => false,
'offsetImage' => '0,-19',
'offsetShadow' => false
),
// openlayers std markers
'ol-marker' => array('regex' => '/^ol-marker(|-blue|-gold|-green)+$/',
'extension' => '.png',
'shadow' => '../marker_shadow.png',
'offsetImage' => '-10,-25',
'offsetShadow' => '-1,-13'
),
// taken from http://www.visual-case.it/cgi-bin/vc/GMapsIcons.pl
'ylw' => array('regex' => '/^(pink|purple|red|ltblu|ylw)-pushpin$/',
'extension' => '.png',
'shadow' => '../marker_shadow.png',
'offsetImage' => '-10,-32',
'offsetShadow' => '-1,-13'
),
// http://svn.openstreetmap.org/sites/other/StaticMap/symbols/0.png
'ojw' => array('regex' => '/^bullseye$/',
'extension' => '.png',
'shadow' => false,
'offsetImage' => '-20,-20',
'offsetShadow' => false
)
);
protected $useTileCache = true;
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protected $useMapCache = false;
protected $mapCacheBaseDir = '../cache/maps';
protected $mapCacheID = '';
protected $mapCacheFile = '';
protected $mapCacheExtension = 'png';
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protected $zoom, $lat, $lon, $width, $height, $image, $maptype;
protected $centerX, $centerY, $offsetX, $offsetY;
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protected $markers = [];
protected $polylines = [];
public function __construct()
{
$this->zoom = 0;
$this->lat = 0;
$this->lon = 0;
$this->width = 500;
$this->height = 350;
$this->maptype = $this->tileDefaultSrc;
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$this->tileResolver = new CachedTileResolver();
$this->tileResolver->setTileLayerUrl($this->tileSrcUrl[$this->maptype]);
}
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public function addMarker(Marker $marker): Printer
{
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$this->markers[] = $marker;
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return $this;
}
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public function addPolyline(string $polylineString, int $colorRed, int $colorGreen, int $colorBlue): Printer
{
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$polyline = ['polyline' => $polylineString, 'colorRed' => $colorRed, 'colorGreen' => $colorGreen, 'colorBlue' => $colorBlue];
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array_push($this->polylines, $polyline);
return $this;
}
public function setCenter(float $latitude, float $longitude): Printer
{
$this->lat = $latitude;
$this->lon = $longitude;
return $this;
}
public function setSize(int $width, int $height): Printer
{
$this->width = $width;
$this->height = $height;
if ($this->width > $this->maxWidth) {
$this->width = $this->maxWidth;
}
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if ($this->height > $this->maxHeight) {
$this->height = $this->maxHeight;
}
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return $this;
}
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public function setZoom(int $zoom): Printer
{
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$this->zoom = $zoom;
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if ($this->zoom > 18) {
$this->zoom = 18;
}
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return $this;
}
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public function setMapType(string $mapType): Printer
{
$this->maptype = $mapType;
$this->tileResolver->setTileLayerUrl($this->tileSrcUrl[$this->maptype]);
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return $this;
}
public function initCoords()
{
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$this->centerX = Util::lonToTile($this->lon, $this->zoom);
$this->centerY = Util::latToTile($this->lat, $this->zoom);
$this->offsetX = floor((floor($this->centerX) - $this->centerX) * $this->tileSize);
$this->offsetY = floor((floor($this->centerY) - $this->centerY) * $this->tileSize);
}
public function createBaseMap()
{
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$this->canvas = new Canvas($this->width, $this->height);
$startX = floor($this->centerX - ($this->width / $this->tileSize) / 2);
$startY = floor($this->centerY - ($this->height / $this->tileSize) / 2);
$endX = ceil($this->centerX + ($this->width / $this->tileSize) / 2);
$endY = ceil($this->centerY + ($this->height / $this->tileSize) / 2);
$this->offsetX = -floor(($this->centerX - floor($this->centerX)) * $this->tileSize);
$this->offsetY = -floor(($this->centerY - floor($this->centerY)) * $this->tileSize);
$this->offsetX += floor($this->width / 2);
$this->offsetY += floor($this->height / 2);
$this->offsetX += floor($startX - floor($this->centerX)) * $this->tileSize;
$this->offsetY += floor($startY - floor($this->centerY)) * $this->tileSize;
for ($x = $startX; $x <= $endX; $x++) {
for ($y = $startY; $y <= $endY; $y++) {
$tileData = $this->tileResolver->fetch($this->zoom, $x, $y);
if ($tileData) {
$tileImage = imagecreatefromstring($tileData);
} else {
$tileImage = imagecreate($this->tileSize, $this->tileSize);
$color = imagecolorallocate($tileImage, 255, 255, 255);
@imagestring($tileImage, 1, 127, 127, 'err', $color);
}
$destX = ($x - $startX) * $this->tileSize + $this->offsetX;
$destY = ($y - $startY) * $this->tileSize + $this->offsetY;
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imagecopy($this->canvas->getImage(), $tileImage, $destX, $destY, 0, 0, $this->tileSize, $this->tileSize);
}
}
}
public function placeMarkers()
{
foreach ($this->markers as $marker) {
$markerFilename = '';
$markerShadow = '';
$matches = false;
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// check for marker type, get settings from markerPrototypes
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if ($marker->getMarkerType()) {
foreach ($this->markerPrototypes as $markerPrototype) {
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if (preg_match($markerPrototype['regex'], $marker->getMarkerType(), $matches)) {
$markerFilename = $matches[0] . $markerPrototype['extension'];
if ($markerPrototype['offsetImage']) {
list($markerImageOffsetX, $markerImageOffsetY) = explode(",", $markerPrototype['offsetImage']);
}
$markerShadow = $markerPrototype['shadow'];
if ($markerShadow) {
list($markerShadowOffsetX, $markerShadowOffsetY) = explode(",", $markerPrototype['offsetShadow']);
}
}
}
}
// check required files or set default
if ($markerFilename == '' || !file_exists($this->markerBaseDir . '/' . $markerFilename)) {
$markerIndex++;
$markerFilename = 'lightblue' . $markerIndex . '.png';
$markerImageOffsetX = 0;
$markerImageOffsetY = -19;
}
// create img resource
if (file_exists($this->markerBaseDir . '/' . $markerFilename)) {
$markerImg = imagecreatefrompng($this->markerBaseDir . '/' . $markerFilename);
} else {
$markerImg = imagecreatefrompng($this->markerBaseDir . '/lightblue1.png');
}
// check for shadow + create shadow recource
if ($markerShadow && file_exists($this->markerBaseDir . '/' . $markerShadow)) {
$markerShadowImg = imagecreatefrompng($this->markerBaseDir . '/' . $markerShadow);
}
// calc position
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$destX = floor(($this->width / 2) - $this->tileSize * ($this->centerX - Util::lonToTile($marker->getLongitude(), $this->zoom)));
$destY = floor(($this->height / 2) - $this->tileSize * ($this->centerY - Util::latToTile($marker->getLatitude(), $this->zoom)));
// copy shadow on basemap
if ($markerShadow && $markerShadowImg) {
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imagecopy($this->canvas->getImage(), $markerShadowImg, $destX + intval($markerShadowOffsetX), $destY + intval($markerShadowOffsetY),
0, 0, imagesx($markerShadowImg), imagesy($markerShadowImg));
}
// copy marker on basemap above shadow
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imagecopy($this->canvas->getImage(), $markerImg, $destX + intval($markerImageOffsetX), $destY + intval($markerImageOffsetY),
0, 0, imagesx($markerImg), imagesy($markerImg));
};
}
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public function placePolylines()
{
// loop thru marker array
foreach ($this->polylines as $polyline) {
// set some local variables
$polylineString = $polyline['polyline'];
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$colorRed = $polyline['colorRed'];
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$colorGreen = $polyline['colorGreen'];
$colorBlue = $polyline['colorBlue'];
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$polylineList = \Polyline::decode($polylineString);
$sourceLatitude = null;
$sourceLongitude = null;
$destinationLatitude = null;
$destinationLongitude = null;
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$color = imagecolorallocate($this->canvas->getImage(), $colorRed, $colorGreen, $colorBlue);
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imagesetthickness($this->image, 3);
//imageantialias($this->image, true);
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while (!empty($polylineList)) {
if (!$sourceLatitude) {
$sourceLatitude = array_shift($polylineList);
}
if (!$sourceLongitude) {
$sourceLongitude = array_shift($polylineList);
}
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$sourceX = floor(($this->width / 2) - $this->tileSize * ($this->centerX - Util::lonToTile($sourceLongitude, $this->zoom)));
$sourceY = floor(($this->height / 2) - $this->tileSize * ($this->centerY - Util::latToTile($sourceLatitude, $this->zoom)));
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$destinationLatitude = array_shift($polylineList);
$destinationLongitude = array_shift($polylineList);
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$destinationX = floor(($this->width / 2) - $this->tileSize * ($this->centerX - Util::lonToTile($destinationLongitude, $this->zoom)));
$destinationY = floor(($this->height / 2) - $this->tileSize * ($this->centerY - Util::latToTile($destinationLatitude, $this->zoom)));
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imageline($this->canvas->getImage() , $sourceX, $sourceY , $destinationX, $destinationY, $color);
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$sourceLatitude = $destinationLatitude;
$sourceLongitude = $destinationLongitude;
}
}
}
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 . "/" . $this->maptype . "/" . $this->zoom . "/cache_" . substr($this->mapCacheID, 0, 2) . "/" . substr($this->mapCacheID, 2, 2) . "/" . substr($this->mapCacheID, 4);
}
return $this->mapCacheFile . "." . $this->mapCacheExtension;
}
public function copyrightNotice()
{
$logoImg = imagecreatefrompng($this->osmLogo);
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imagecopy($this->canvas->getImage(), $logoImg, imagesx($this->image) - imagesx($logoImg), imagesy($this->image) - imagesy($logoImg), 0, 0, imagesx($logoImg), imagesy($logoImg));
}
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');
}
public function makeMap()
{
$this->initCoords();
$this->createBaseMap();
if (count($this->markers)) $this->placeMarkers();
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if (count($this->polylines)) $this->placePolylines();
if ($this->osmLogo) $this->copyrightNotice();
}
public function showMap()
{
if ($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);
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imagepng($this->canvas->getImage(), $this->mapCacheIDToFilename(), 9);
$this->sendHeader();
if (file_exists($this->mapCacheIDToFilename())) {
return file_get_contents($this->mapCacheIDToFilename());
} else {
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return imagepng($this->canvas->getImage());
}
} 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();
$this->sendHeader();
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return imagepng($this->canvas->getImage());
}
}
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public function mkdir_recursive($pathname, $mode)
{
is_dir(dirname($pathname)) || $this->mkdir_recursive(dirname($pathname), $mode);
return is_dir($pathname) || @mkdir($pathname, $mode);
}
}