mirror of
https://github.com/OpenXE-org/OpenXE.git
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424 lines
13 KiB
PHP
424 lines
13 KiB
PHP
<?php
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class image {
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var $app;
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var $cacheFolder;
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var $cacheFolder_orig;
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public function __construct($app) {
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$this->app = $app;
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$this->cacheFolder = $this->app->Conf->WFuserdata . '/dms/' . $this->app->Conf->WFdbname . '/cache';
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$this->cacheFolder_orig = $this->cacheFolder;
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}
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/**
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* @param int $id
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* @param int $newwidth
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* @param int $newheight
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* @param bool $upscale
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* @param null|string $typ
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*
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* @return bool|false|string
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*/
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public function scaledPicByFileId($id, $newwidth, $newheight, $upscale = false, $typ = null) {
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$this->cacheFolder = $this->cacheFolder_orig;
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$filename[] = $id;
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$filename[] = $newwidth;
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$filename[] = $newheight;
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$filename = implode('_', $filename);
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if (!file_exists($this->cacheFolder . '/' . $filename)) {
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$this->cacheFolder = $this->app->erp->CreateDMSPath($this->cacheFolder_orig, $filename, true);
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}
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if (is_file($this->cacheFolder . '/' . $filename)
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&& filesize($this->cacheFolder . '/' . $filename) === 0) {
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@unlink($this->cacheFolder . '/' . $filename);
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}
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if (!file_exists($this->cacheFolder . '/' . $filename)) {
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if (is_dir($this->cacheFolder) !== true
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&& !mkdir($this->cacheFolder,0755,true) && !is_dir($this->cacheFolder)) {
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return '';
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}
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$path = $this->app->erp->GetDateiPfadVersion($id);
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if(!file_exists($path)) {
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return '';
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}
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$str = file_get_contents($path);
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$manipulator = new ImageManipulator($str);
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$type = mime_content_type($path);
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$manipulator->resample($newwidth, $newheight, true, $upscale);
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/*
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$width = $manipulator->getWidth();
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$height = $manipulator->getHeight();
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$centreX = round($width / 2);
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$centreY = round($height / 2);
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$x1 = $centreX - ($newwidth/2); // 200 / 2
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$y1 = $centreY - ($newheight/2); // 130 / 2
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$x2 = $centreX + ($newwidth/2); // 200 / 2
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$y2 = $centreY + ($newheight/2); // 130 / 2
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$manipulator->crop($x1, $y1, $x2, $y2);
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*/
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if($typ === 'jpg') {
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$type = 'image/jpg';
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}
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if($typ === 'gif') {
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$type = 'image/gif';
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}
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if($typ === 'png') {
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$type = 'image/png';
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}
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switch($type)
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{
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case 'image/jpg':
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case 'image/jpeg':
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$typ = IMAGETYPE_JPEG;
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break;
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case 'image/png':
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$typ = IMAGETYPE_PNG;
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break;
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case 'image/gif':
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$typ = IMAGETYPE_GIF;
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break;
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}
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$manipulator->save($this->cacheFolder . '/' . $filename, $typ);
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}
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return file_get_contents($this->cacheFolder .'/' . $filename);
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}
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}
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class ImageManipulator
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{
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/**
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* @var int
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*/
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protected $width;
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/**
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* @var int
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*/
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protected $height;
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/**
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* @var resource
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*/
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protected $image;
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/**
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* Image manipulator constructor
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*
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* @param string $file OPTIONAL Path to image file or image data as string
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* @return void
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*/
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public function __construct($file = null)
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{
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if (null !== $file) {
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if (is_file($file)) {
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$this->setImageFile($file);
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} else {
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$this->setImageString($file);
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}
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}
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}
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/**
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* Set image resource from file
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*
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* @param string $file Path to image file
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* @return ImageManipulator for a fluent interface
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* @throws InvalidArgumentException
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*/
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public function setImageFile($file)
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{
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if (!(is_readable($file) && is_file($file))) {
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throw new InvalidArgumentException("Image file $file is not readable");
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}
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if (is_resource($this->image)) {
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imagedestroy($this->image);
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}
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list ($this->width, $this->height, $type) = getimagesize($file);
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switch ($type) {
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case IMAGETYPE_GIF :
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$this->image = imagecreatefromgif($file);
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break;
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case IMAGETYPE_JPEG :
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$this->image = imagecreatefromjpeg($file);
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break;
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case IMAGETYPE_PNG :
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$this->image = imagecreatefrompng($file);
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break;
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default :
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throw new InvalidArgumentException("Image type $type not supported");
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}
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return $this;
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}
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/**
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* Set image resource from string data
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*
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* @param string $data
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* @return ImageManipulator for a fluent interface
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* @throws RuntimeException
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*/
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public function setImageString($data)
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{
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if (is_resource($this->image)) {
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imagedestroy($this->image);
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}
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if (!$this->image = imagecreatefromstring($data)) {
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throw new RuntimeException('Cannot create image from data string');
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}
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$this->width = imagesx($this->image);
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$this->height = imagesy($this->image);
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return $this;
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}
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/**
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* Resamples the current image
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*
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* @param int $width New width
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* @param int $height New height
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* @param bool $constrainProportions Constrain current image proportions when resizing
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* @return ImageManipulator for a fluent interface
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* @throws RuntimeException
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*/
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public function resample($width, $height, $constrainProportions = true, $upscale = false, $keepformat = false)
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{
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if (!is_resource($this->image)) {
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throw new RuntimeException('No image set');
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}
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if($keepformat)
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{
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$facx = $height / $this->height;
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$facy = $width / $this->width;
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$offsetx = 0;
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$offsety = 0;
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if($facx > $facy)
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{
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$fac = $facy;
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}else{
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$fac = $facx;
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}
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if(!$upscale && $fac > 1)
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{
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$fac = 1;
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}
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$offsetx = ($width - $fac * $this->width)/2;
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$offsety = ($height - $fac * $this->height)/2;
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$temp = imagecreatetruecolor($width, $height);
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imagealphablending($temp, false);
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imagesavealpha($temp,true);
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$transparent = imagecolorallocatealpha($temp, 255, 255, 255, 127);
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imagefilledrectangle($temp, 0, 0, $width, $height, $transparent);
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imagecopyresampled($temp, $this->image, $offsetx, $offsety, 0, 0, $fac * $this->width, $fac * $this->height, $this->width, $this->height);
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return $this->_replace($temp);
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}
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if($upscale || $width < $this->width || $height < $this->height)
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{
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if ($constrainProportions) {
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if ($this->height >= $this->width) {
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$width = round($height / $this->height * $this->width);
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} else {
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$height = round($width / $this->width * $this->height);
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}
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}
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$temp = imagecreatetruecolor($width, $height);
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imagealphablending($temp, false);
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imagesavealpha($temp,true);
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$transparent = imagecolorallocatealpha($temp, 255, 255, 255, 127);
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imagefilledrectangle($temp, 0, 0, $width, $height, $transparent);
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imagecopyresampled($temp, $this->image, 0, 0, 0, 0, $width, $height, $this->width, $this->height);
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return $this->_replace($temp);
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}else{
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$temp = imagecreatetruecolor($width, $height);
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/*$white = imagecolorallocate($temp, 255, 255, 255);
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imagefill($temp, 0, 0, $white);*/
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imagealphablending($temp, false);
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imagesavealpha($temp,true);
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$transparent = imagecolorallocatealpha($temp, 255, 255, 255, 127);
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imagefilledrectangle($temp, 0, 0, $width, $height, $transparent);
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imagecopyresampled($temp, $this->image, round(($width-$this->width)/2), round(($height-$this->height)/2), 0, 0, $this->width, $this->height, $this->width, $this->height);
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return $this->_replace($temp);
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}
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}
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/**
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* Enlarge canvas
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*
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* @param int $width Canvas width
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* @param int $height Canvas height
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* @param array $rgb RGB colour values
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* @param int $xpos X-Position of image in new canvas, null for centre
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* @param int $ypos Y-Position of image in new canvas, null for centre
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* @return ImageManipulator for a fluent interface
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* @throws RuntimeException
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*/
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public function enlargeCanvas($width, $height, array $rgb = array(), $xpos = null, $ypos = null)
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{
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if (!is_resource($this->image)) {
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throw new RuntimeException('No image set');
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}
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$width = max($width, $this->width);
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$height = max($height, $this->height);
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$temp = imagecreatetruecolor($width, $height);
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if ((!empty($rgb)?count($rgb):0) == 3) {
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$bg = imagecolorallocate($temp, $rgb[0], $rgb[1], $rgb[2]);
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imagefill($temp, 0, 0, $bg);
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}
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if (null === $xpos) {
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$xpos = round(($width - $this->width) / 2);
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}
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if (null === $ypos) {
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$ypos = round(($height - $this->height) / 2);
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}
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imagecopy($temp, $this->image, (int) $xpos, (int) $ypos, 0, 0, $this->width, $this->height);
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return $this->_replace($temp);
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}
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/**
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* Crop image
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*
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* @param int|array $x1 Top left x-coordinate of crop box or array of coordinates
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* @param int $y1 Top left y-coordinate of crop box
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* @param int $x2 Bottom right x-coordinate of crop box
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* @param int $y2 Bottom right y-coordinate of crop box
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* @return ImageManipulator for a fluent interface
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* @throws RuntimeException
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*/
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public function crop($x1, $y1 = 0, $x2 = 0, $y2 = 0)
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{
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if (!is_resource($this->image)) {
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throw new RuntimeException('No image set');
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}
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if (is_array($x1) && 4 == (!empty($x1)?count($x1):0)) {
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list($x1, $y1, $x2, $y2) = $x1;
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}
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$x1 = max($x1, 0);
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$y1 = max($y1, 0);
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$x2 = min($x2, $this->width);
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$y2 = min($y2, $this->height);
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$width = $x2 - $x1;
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$height = $y2 - $y1;
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$temp = imagecreatetruecolor($width, $height);
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imagecopy($temp, $this->image, 0, 0, $x1, $y1, $width, $height);
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return $this->_replace($temp);
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}
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/**
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* Replace current image resource with a new one
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*
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* @param resource $res New image resource
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* @return ImageManipulator for a fluent interface
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* @throws UnexpectedValueException
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*/
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protected function _replace($res)
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{
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if (!is_resource($res)) {
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throw new UnexpectedValueException('Invalid resource');
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}
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if (is_resource($this->image)) {
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imagedestroy($this->image);
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}
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$this->image = $res;
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$this->width = imagesx($res);
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$this->height = imagesy($res);
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return $this;
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}
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/**
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* Save current image to file
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*
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* @param string $fileName
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* @return void
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* @throws RuntimeException
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*/
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public function save($fileName, $type = IMAGETYPE_JPEG)
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{
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$dir = dirname($fileName);
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if (!is_dir($dir)) {
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if (!mkdir($dir, 0755, true)) {
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throw new RuntimeException('Error creating directory ' . $dir);
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}
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}
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try {
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switch ($type) {
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case IMAGETYPE_GIF :
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if (!imagegif($this->image, $fileName)) {
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throw new RuntimeException;
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}
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break;
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case IMAGETYPE_PNG :
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if (!imagepng($this->image, $fileName)) {
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throw new RuntimeException;
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}
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break;
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case IMAGETYPE_JPEG :
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default :
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if (!imagejpeg($this->image, $fileName, 95)) {
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throw new RuntimeException;
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}
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}
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} catch (Exception $ex) {
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throw new RuntimeException('Error saving image file to ' . $fileName);
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}
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}
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/**
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* Returns the GD image resource
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*
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* @return resource
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*/
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public function getResource()
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{
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return $this->image;
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}
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/**
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* Get current image resource width
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*
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* @return int
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*/
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public function getWidth()
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{
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return $this->width;
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}
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/**
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* Get current image height
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*
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* @return int
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*/
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public function getHeight()
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{
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return $this->height;
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}
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}
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