<?php if(!defined('IN_GS')){ die('you cannot load this page directly.'); }
/**
* Generate standard thumbnails
* @param string $path path to image
* @param string $name file name
* @uses GD
*/
function genStdThumb($path,$name){
//gd check
$php_modules = get_loaded_extensions();
if(!in_arrayi('gd', $php_modules)) return;
if (!defined('GSIMAGEWIDTH')) {
$width = 200; //New width of image
} else {
$width = GSIMAGEWIDTH;
}
$ext = lowercase(pathinfo($name,PATHINFO_EXTENSION));
if ($ext == 'jpg' || $ext == 'jpeg' || $ext == 'gif' || $ext == 'png' ) {
$thumbsPath = GSTHUMBNAILPATH.$path;
if (!(file_exists($thumbsPath))) {
if (defined('GSCHMOD')) {
$chmod_value = GSCHMOD;
} else {
$chmod_value = 0755;
}
mkdir($thumbsPath, $chmod_value);
}
}
$targetFile = GSDATAUPLOADPATH.$path.$name;
//thumbnail for post
$imgsize = getimagesize($targetFile);
switch($ext){
case "jpeg":
case "jpg":
$image = imagecreatefromjpeg($targetFile);
break;
case "png":
$image = imagecreatefrompng($targetFile);
break;
case "gif":
$image = imagecreatefromgif($targetFile);
break;
default:
return;
break;
}
$height = $imgsize[1]/$imgsize[0]*$width; //This maintains proportions
$src_w = $imgsize[0];
$src_h = $imgsize[1];
$picture = imagecreatetruecolor($width, $height);
imagealphablending($picture, false);
imagesavealpha($picture, true);
$bool = imagecopyresampled($picture, $image, 0, 0, 0, 0, $width, $height, $src_w, $src_h);
if($bool) {
$thumbnailFile = $thumbsPath . "thumbnail." . $name;
switch(lowercase(substr($targetFile, -3))) {
case "jpg":
$bool2 = imagejpeg($picture,$thumbnailFile,85);
break;
case "png":
imagepng($picture,$thumbnailFile);
break;
case "gif":
imagegif($picture,$thumbnailFile);
break;
}
}
imagedestroy($picture);
imagedestroy($image);
return true;
}
/**
* ImageManipulation
*
* @author Tech @ Talk In Code
* @link http://www.talkincode.com/
* @version 1.0
* @copyright 2009 Talk In Code
*
* @package GetSimple
* @subpackage Images
* @uses GD
*/
class ImageManipulation {
/**
* An array to hold the settings for the image. Default values for
* images are set here.
*
* @var array
*/
public $image = array('targetx'=>0,
'targety'=>0,
'quality'=>75);
/**
* A boolean value to detect if an image has not been created. This
* can be used to validate that an image is viable before trying
* resize or crop.
*
* @var boolean
*/
public $imageok = false;
/**
* Contructor method. Will create a new image from the target file.
* Accepts an image filename as a string. Method also works out how
* big the image is and stores this in the $image array.
*
* @param string $imgFile The image filename.
*/
public function ImageManipulation($imgfile)
{
//detect image format
$this->image["format"] = preg_replace("/.*\.(.*)$/", "\\1", $imgfile);
$this->image["format"] = strtoupper($this->image["format"]);
// convert image into usable format.
if ( $this->image["format"] == "JPG" || $this->image["format"] == "JPEG" ) {
//JPEG
$this->image["format"] = "JPEG";
$this->image["src"] = ImageCreateFromJPEG($imgfile);
} elseif( $this->image["format"] == "PNG" ){
//PNG
$this->image["format"] = "PNG";
$this->image["src"] = imagecreatefrompng($imgfile);
} elseif( $this->image["format"] == "GIF" ){
//GIF
$this->image["format"] = "GIF";
$this->image["src"] = ImageCreateFromGif($imgfile);
} elseif ( $this->image["format"] == "WBMP" ){
//WBMP
$this->image["format"] = "WBMP";
$this->image["src"] = ImageCreateFromWBMP($imgfile);
} else {
//DEFAULT
return false;
}
// Image is ok
$this->imageok = true;
// Work out image size
$this->image["sizex"] = imagesx($this->image["src"]);
$this->image["sizey"] = imagesy($this->image["src"]);
}
/**
* Sets the height of the image to be created. The width of the image
* is worked out depending on the value of the height.
*
* @param int $height The height of the image.
*/
public function setImageHeight($height=100)
{
//height
$this->image["sizey_thumb"] = $height;
$this->image["sizex_thumb"] = ($this->image["sizey_thumb"]/$this->image["sizey"])*$this->image["sizex"];
}
/**
* Sets the width of the image to be created. The height of the image
* is worked out depending on the value of the width.
*
* @param int $size The width of the image.
*/
public function setImageWidth($width=100)
{
//width
$this->image["sizex_thumb"] = $width;
$this->image["sizey_thumb"] = ($this->image["sizex_thumb"]/$this->image["sizex"])*$this->image["sizey"];
}
/**
* This method automatically sets the width and height depending
* on the dimensions of the image up to a maximum value.
*
* @param int $size The maximum size of the image.
*/
public function resize($size=100)
{
if ( $this->image["sizex"] >= $this->image["sizey"] ) {
$this->image["sizex_thumb"] = $size;
$this->image["sizey_thumb"] = ($this->image["sizex_thumb"]/$this->image["sizex"])*$this->image["sizey"];
} else {
$this->image["sizey_thumb"] = $size;
$this->image["sizex_thumb"] = ($this->image["sizey_thumb"]/$this->image["sizey"])*$this->image["sizex"];
}
}
/**
* This method sets the cropping values of the image. Be sure
* to set the height and with of the image if you want the
* image to be a certain size after cropping.
*
* @param int $x The x coordinates to start cropping from.
* @param int $y The y coordinates to start cropping from.
* @param int $w The width of the crop from the x and y coordinates.
* @param int $h The height of the crop from the x and y coordinates.
*/
public function setCrop($x, $y, $w, $h)
{
$this->image["targetx"] = $x;
$this->image["targety"] = $y;
$this->image["sizex"] = $w;
$this->image["sizey"] = $h;
}
/**
* Sets the JPEG output quality.
*
* @param int $quality The quality of the JPEG image.
*/
public function setJpegQuality($quality=75)
{
//jpeg quality
$this->image["quality"] = $quality;
}
/**
* Shows the image to a browser. Sets the correct image format in a header.
*/
public function show()
{
//show thumb
header("Content-Type: image/".$this->image["format"]);
$this->createResampledImage();
if ( $this->image["format"]=="JPG" || $this->image["format"]=="JPEG" ) {
//JPEG
imageJPEG($this->image["des"], "", $this->image["quality"]);
} elseif ( $this->image["format"] == "PNG" ) {
//PNG
imagePNG($this->image["des"]);
} elseif ( $this->image["format"] == "GIF" ) {
//GIF
imageGIF($this->image["des"]);
} elseif ( $this->image["format"] == "WBMP" ) {
//WBMP
imageWBMP($this->image["des"]);
}
}
/**
* Private method to run the imagecopyresampled() function with the parameters that have been set up.
* This method is used by the save() and show() methods.
*/
private function createResampledImage()
{
/* change ImageCreateTrueColor to ImageCreate if your GD not supported ImageCreateTrueColor function*/
if ( isset($this->image["sizex_thumb"]) && isset($this->image["sizey_thumb"]) ) {
$this->image["des"] = ImageCreateTrueColor($this->image["sizex_thumb"], $this->image["sizey_thumb"]);
imagecopyresampled($this->image["des"], $this->image["src"], 0, 0, $this->image["targetx"], $this->image["targety"], $this->image["sizex_thumb"], $this->image["sizey_thumb"], $this->image["sizex"], $this->image["sizey"]);
} else {
$this->image["des"] = ImageCreateTrueColor($this->image["sizex"], $this->image["sizey"]);
imagecopyresampled($this->image["des"], $this->image["src"], 0, 0, $this->image["targetx"], $this->image["targety"], $this->image["sizex"], $this->image["sizey"], $this->image["sizex"], $this->image["sizey"]);
}
}
/**
* Saves the image to a given filename, if no filename is given then a default is created.
*
* @param string $save The new image filename.
*/
public function save($save="")
{
//save thumb
if ( empty($save) ) {
$save = strtolower("./thumb.".$this->image["format"]);
}
header("Content-Type: image/".$this->image["format"]);
$this->createResampledImage();
if ( $this->image["format"] == "JPG" || $this->image["format"] == "JPEG" ) {
//JPEG
imageJPEG($this->image["des"], $save, $this->image["quality"]);
} elseif ( $this->image["format"] == "PNG" ) {
//PNG
imagePNG($this->image["des"], $save);
} elseif ( $this->image["format"] == "GIF" ) {
//GIF
imageGIF($this->image["des"], $save);
} elseif ( $this->image["format"] == "WBMP" ) {
//WBMP
imageWBMP($this->image["des"], $save);
}
header("Content-Type: text/html");
}
}