Added resizing, cropping functionality.

libraries/image.php

@@ -20,6 +20,11 @@
  */
 class cImage {
 
+	protected $_Resource;
+	protected $_Width;
+	protected $_Height;
+	protected $_Type;
+
   	/*
  	 * Constructor
 	 *
@@ -28,10 +33,89 @@ class cImage {
 	public function __construct ( ) {       
 	}
 
-	public function ResizeAndCrop ($pResource, $pNewWidth, $pNewHeight ) {
+    // Set the attributes for an image.
+    public function Attributes ($pFilename) {
+
+      // Retrieve file attributes.
+      list($width, $height, $type, $attr) = getimagesize($pFilename);
+
+      // Assign Values
+      $this->_Width = $width;
+      $this->_Height = $height;
+      $this->_Type = $type;
+
+      return ( true );
+    } // Attributes
+
+    // Convert the file to a an image resource.
+    public function Convert ($pFilename) {
+
+      // Retrieve file attributes.
+      list($width, $height, $type, $attr) = getimagesize($pFilename);
+
+      // Determine which type of file to convert from.
+      switch ($type) {
+        case IMAGETYPE_PNG:
+          $src_img = imagecreatefrompng ($pFilename);
+        break;
+
+        case IMAGETYPE_WBMP:
+          $src_img = imagecreatefromwbmp ($pFilename); 
+        break;
+
+        case IMAGETYPE_JPEG:
+          $src_img = imagecreatefromjpeg ($pFilename); 
+        break;
+
+        case IMAGETYPE_GIF:
+          $src_img = imagecreatefromgif ($pFilename); 
+        break;
+      } // switch
+
+      // Copy the source image.
+      $this->_Resource = imagecreatetruecolor ($width, $height);
+      $result = imagecopy($this->_Resource,$src_img,0,0,0,0,$width,$height);
+
+      return ( $result );
+
+    } // Convert
+
+    // Resize an image.
+    public function Resize ($pNewWidth, $pNewHeight, $pProportional = TRUE, $pXOnly = FALSE, $pYOnly = FALSE) {
+
+      // Calculate the proportional new height and width.
+      if ($pProportional) {
+        if ($pNewWidth && ($this->_Width < $this->_Height) && 
+                          (!$pXOnly) || ($pYOnly)      ) {
+             $pNewWidth = ($pNewHeight / $this->_Height) * $this->_Width;
+             $pNewWidth = floor ($pNewWidth);
+        } else {
+             $pNewHeight = ($pNewWidth / $this->_Width) * $this->_Height;
+             $pNewHeight = floor ($pNewHeight);
+        } // if
+      } // if
+
+      $src_img = imagecreatetruecolor ($this->_Width, $this->_Height);
+      imagecopy($src_img, $this->_Resource, 0, 0, 0, 0, $this->_Width, $this->_Height);
+
+      $this->Destroy ();
+
+      $this->_Resource = imagecreatetruecolor ($pNewWidth, $pNewHeight);
+
+      $result = imagecopyresampled($this->_Resource, $src_img, 0, 0, 0, 0, $pNewWidth, $pNewHeight, $this->_Width, $this->_Height);
+      // int imagecopyresized(int dst_im, int src_im, int dst_x, int dst_y, int src_x, int src_y, int dst_w, int dst_h, int src_w, int src_h) 
+
+      $this->_Width = $pNewWidth;
+      $this->_Height = $pNewHeight;
+
+      return ( $result );
+
+    } // Resize
+
+	public function ResizeAndCrop ($pNewWidth, $pNewHeight ) {
 
-		$originalWidth = imagesx ( $pResource  );
-		$originalHeight = imagesy ( $pResource  );
+		$originalWidth = imagesx ( $this->_Resource  );
+		$originalHeight = imagesy ( $this->_Resource  );
 
 		if ( $originalHeight == $originalWidth ) {
 			// Proportion is the same
@@ -57,20 +141,74 @@ public function ResizeAndCrop ($pResource, $pNewWidth, $pNewHeight ) {
 		/* echo $originalWidth, '<br />'; echo $originalHeight, '<br /><br />'; echo $pNewWidth, '<br />'; echo $pNewHeight, '<br /><br />'; echo $newwidth, '<br />'; echo $newheight, '<br /><br />'; echo $startx, '<br />'; echo $starty, '<br />'; echo $endx, '<br />'; echo $endy, '<br />'; exit; */
 
 		$src_img = imagecreatetruecolor ( $originalWidth, $originalHeight );
-		imagecopy( $src_img, $pResource, 0, 0, 0, 0, $originalWidth, $originalHeight );
+		imagecopy( $src_img, $this->_Resource, 0, 0, 0, 0, $originalWidth, $originalHeight );
 
 		$intermediary = imagecreatetruecolor ( $newwidth, $newheight );
-		$result = imagecreatetruecolor ( $pNewWidth, $pNewHeight );
+
+		$this->Destroy();
+		$this->_Resource = imagecreatetruecolor ( $pNewWidth, $pNewHeight );
 
 		// Resize image.
 		imagecopyresampled ( $intermediary, $src_img, 0, 0, 0, 0, $newwidth, $newheight, $originalWidth, $originalHeight );
 
 		// Crop image.
-		imagecopy ( $result, $intermediary, 0, 0, $startx, $starty, $pNewWidth, $pNewHeight );
+		imagecopy ( $this->_Resource, $intermediary, 0, 0, $startx, $starty, $pNewWidth, $pNewHeight );
 
 		imagedestroy ( $intermediary );
-		
-		return ( $result );
+
+		return ( true );
 	} // ResizeAndCrop
+
+    // Save the image resource to a file.
+    public function Save ( $pFilename, $pType = IMAGETYPE_JPEG) {
+
+      // Delete the old file if it exists.
+      if (file_exists ($pFilename) ) {
+        // note: Permission Denied error.
+        unlink ($pFilename);
+      } // if
+
+      // Determine which type of file to save to.
+      switch ($pType) {
+        case IMAGETYPE_PNG:
+          $result = imagepng($this->_Resource, $pFilename);
+        break;
+
+        case IMAGETYPE_WBMP:
+          $result = imagewbmp($this->_Resource, $pFilename);
+        break;
+
+        case IMAGETYPE_JPEG:
+          $result = imagejpeg($this->_Resource, $pFilename, 100);
+        break;
+
+        case IMAGETYPE_GIF:
+          $result = imagegif($this->_Resource, $pFilename);
+        break;
+      } // switch
+
+      // @note: Probably not the best way to do this.
+      chmod ($pFilename, 0777);
+
+      // Save the image resource .
+      if (!$result) {
+        return ( false );
+      } // if
+
+      return ( true );
+    } // Save
+
+    // Destroy the image resource.
+    public function Destroy () {
+
+      imagedestroy ($this->_Resource);
+
+    } // Destroy
+
+	public function Get ( $pVariable ) {
+		$var = '_' . $pVariable;
+
+		return ( $this->$var );
+	}
 
 }