1 files changed, 151 insertions, 0 deletions
diff --git a/protected/extensions/SimpleImage/SimpleImage.php b/protected/extensions/SimpleImage/SimpleImage.php
new file mode 100644
index 0000000..bbccfa0
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+++ b/protected/extensions/SimpleImage/SimpleImage.php
@@ -0,0 +1,151 @@
+<?php
+/**
+ * Class to hold information about an image and to provide basic operations on images.
+ * @link http://www.yiiframework.com/extension/simpleimage/
+ * @author tzur
+ *
+ */
+class SimpleImage {
+    /**
+     * The image.
+     * @var resource
+     */
+    var $image;
+    /**
+     * The type of the image.
+     * @see http://www.php.net/manual/en/image.constants.php
+     * @var integer
+     */
+    var $image_type;
+    /**
+     * The image informations.
+     * @see http://www.php.net/manual/en/function.getimagesize.php 
+     * @var array
+     */
+    var $image_info;
+
+    /**
+     * Creates the SimpleImage instance and loads all necessary information.
+     * @param string $filename
+     * @link http://www.php.net/manual/en/function.getimagesize.php
+     * @link http://www.php.net/manual/en/function.imagecreatefromjpeg.php
+     * @link http://www.php.net/manual/en/function.imagecreatefromgif.php
+     * @link http://www.php.net/manual/en/function.imagecreatefrompng.php
+     * 
+     */
+    function __construct($filename) {
+        $this->image_info = $image_info = getimagesize($filename);
+        $this->image_type = $image_info[2];
+        if ($this->image_type == IMAGETYPE_JPEG) {
+            $this->image = imagecreatefromjpeg($filename);
+        } elseif ($this->image_type == IMAGETYPE_GIF) {
+            $this->image = imagecreatefromgif($filename);
+        } elseif ($this->image_type == IMAGETYPE_PNG) {
+            $this->image = imagecreatefrompng($filename);
+        }
+    }
+
+    /**
+     * Saves the image.
+     * @param string $filename
+     * @param int $image_type
+     * @param int $compression
+     * @param int $permissions
+     * @link http://www.php.net/manual/en/function.imagejpeg.php
+     * @link http://www.php.net/manual/en/function.imagegif.php
+     * @link http://www.php.net/manual/en/function.imagepng.php
+     * @link http://www.php.net/manual/en/function.chmod.php
+     */
+    function save($filename, $image_type = IMAGETYPE_JPEG, $compression = 75, $permissions = null) {
+        if ($image_type == IMAGETYPE_JPEG) {
+            imagejpeg($this->image, $filename, $compression);
+        } elseif ($image_type == IMAGETYPE_GIF) {
+            imagegif($this->image, $filename);
+        } elseif ($image_type == IMAGETYPE_PNG) {
+            imagepng($this->image, $filename);
+        }
+        if ($permissions != null) {
+            chmod($filename, $permissions);
+        }
+    }
+    
+    /**
+     * Outputs the image.
+     * @param int $image_type
+     * @link http://www.php.net/manual/en/function.imagejpeg.php 
+     * @link http://www.php.net/manual/en/function.imagegif.php 
+     * @link http://www.php.net/manual/en/function.imagepng.php 
+     */
+    function output($image_type = IMAGETYPE_JPEG) {
+        if ($image_type == IMAGETYPE_JPEG) {
+            imagejpeg($this->image);
+        } elseif ($image_type == IMAGETYPE_GIF) {
+            imagegif($this->image);
+        } elseif ($image_type == IMAGETYPE_PNG) {
+            imagepng($this->image);
+        }
+    }
+    
+    /**
+     * Returns the width of the image.
+     * @return int Return the width of the image or false on errors. 
+     * @link http://www.php.net/manual/en/function.imagesx.php 
+     */
+    function getWidth() {
+        return imagesx($this->image);
+    }
+    
+    /**
+     * Returns the height of the image.
+     * @return int Return the height of the image or false on errors. 
+     * @link http://www.php.net/manual/en/function.imagesy.php 
+     */
+    function getHeight() {
+        return imagesy($this->image);
+    }
+    
+    /**
+     * Resizes the image to given height.
+     * Keeps the ratio.
+     * @param number $height
+     */
+    function resizeToHeight($height) {
+        $ratio = $height / $this->getHeight();
+        $width = $this->getWidth() * $ratio;
+        $this->resize($width, $height);
+    }
+    
+    /**
+     * Resizes the image to given width.
+     * Keeps the ratio.
+     * @param number $width
+     */
+    function resizeToWidth($width) {
+        $ratio = $width / $this->getWidth();
+        $height = $this->getHeight() * $ratio;
+        $this->resize($width, $height);
+    }
+    
+    /**
+     * Scales the image with given scale.
+     * @param number $scale
+     */
+    function scale($scale) {
+        $width = $this->getWidth() * $scale / 100;
+        $height = $this->getHeight() * $scale / 100;
+        $this->resize($width, $height);
+    }
+    
+    /**
+     * Resizes the image to given width and height.
+     * @param number $width
+     * @param number $height
+     * @link http://www.php.net/manual/en/function.imagecopyresampled.php
+     */
+    function resize($width, $height) {
+        $new_image = imagecreatetruecolor($width, $height);
+        imagecopyresampled($new_image, $this->image, 0, 0, 0, 0, $width, $height, $this->getWidth(), $this->getHeight());
+        $this->image = $new_image;
+    }
+}
+?>
+\ No newline at end of file