Merge pull request #123 from felipetnh/gumlet-save-exact-size

Exact Size

Author: adityapatadia

lib/ImageResize.php

@@ -211,16 +211,21 @@ public function imageCreateJpegfromExif($filename)
      * @param string $image_type
      * @param integer $quality
      * @param integer $permissions
+     * @param boolean $exact_size
      * @return static
      */
-    public function save($filename, $image_type = null, $quality = null, $permissions = null)
+    public function save($filename, $image_type = null, $quality = null, $permissions = null, $exact_size = false)
     {
         $image_type = $image_type ?: $this->source_type;
         $quality = is_numeric($quality) ? (int) abs($quality) : null;
 
         switch ($image_type) {
         case IMAGETYPE_GIF:
-            $dest_image = imagecreatetruecolor($this->getDestWidth(), $this->getDestHeight());
+            if( !empty($exact_size) && is_array($exact_size) ){
+                $dest_image = imagecreatetruecolor($exact_size[0], $exact_size[1]);
+            } else{
+                $dest_image = imagecreatetruecolor($this->getDestWidth(), $this->getDestHeight());
+            }
 
             $background = imagecolorallocatealpha($dest_image, 255, 255, 255, 1);
             imagecolortransparent($dest_image, $background);
@@ -229,41 +234,70 @@ public function save($filename, $image_type = null, $quality = null, $permission
             break;
 
         case IMAGETYPE_JPEG:
-            $dest_image = imagecreatetruecolor($this->getDestWidth(), $this->getDestHeight());
-
-            $background = imagecolorallocate($dest_image, 255, 255, 255);
-            imagefilledrectangle($dest_image, 0, 0, $this->getDestWidth(), $this->getDestHeight(), $background);
+            if( !empty($exact_size) && is_array($exact_size) ){
+                $dest_image = imagecreatetruecolor($exact_size[0], $exact_size[1]);
+                $background = imagecolorallocate($dest_image, 255, 255, 255);
+                imagefilledrectangle($dest_image, 0, 0, $exact_size[0], $exact_size[1], $background);
+            } else{
+                $dest_image = imagecreatetruecolor($this->getDestWidth(), $this->getDestHeight());
+                $background = imagecolorallocate($dest_image, 255, 255, 255);
+                imagefilledrectangle($dest_image, 0, 0, $this->getDestWidth(), $this->getDestHeight(), $background);
+            }
             break;
 
         case IMAGETYPE_WEBP:
             if (version_compare(PHP_VERSION, '5.5.0', '<')) {
                 throw new ImageResizeException('For WebP support PHP >= 5.5.0 is required');
             }
-            $dest_image = imagecreatetruecolor($this->getDestWidth(), $this->getDestHeight());
-
-            $background = imagecolorallocate($dest_image, 255, 255, 255);
-            imagefilledrectangle($dest_image, 0, 0, $this->getDestWidth(), $this->getDestHeight(), $background);
+            if( !empty($exact_size) && is_array($exact_size) ){
+                $dest_image = imagecreatetruecolor($exact_size[0], $exact_size[1]);
+                $background = imagecolorallocate($dest_image, 255, 255, 255);
+                imagefilledrectangle($dest_image, 0, 0, $exact_size[0], $exact_size[1], $background);
+            } else{
+                $dest_image = imagecreatetruecolor($this->getDestWidth(), $this->getDestHeight());
+                $background = imagecolorallocate($dest_image, 255, 255, 255);
+                imagefilledrectangle($dest_image, 0, 0, $this->getDestWidth(), $this->getDestHeight(), $background);
+            }
             break;
 
         case IMAGETYPE_PNG:
             if (!$this->quality_truecolor && !imageistruecolor($this->source_image)) {
-                $dest_image = imagecreate($this->getDestWidth(), $this->getDestHeight());
-
-                $background = imagecolorallocatealpha($dest_image, 255, 255, 255, 1);
-                imagecolortransparent($dest_image, $background);
-                imagefill($dest_image, 0, 0, $background);
+                if( !empty($exact_size) && is_array($exact_size) ){
+                    $dest_image = imagecreate($exact_size[0], $exact_size[1]);
+                } else{
+                    $dest_image = imagecreate($this->getDestWidth(), $this->getDestHeight());
+                }
             } else {
-                $dest_image = imagecreatetruecolor($this->getDestWidth(), $this->getDestHeight());
+                if( !empty($exact_size) && is_array($exact_size) ){
+                    $dest_image = imagecreatetruecolor($exact_size[0], $exact_size[1]);
+                } else{
+                    $dest_image = imagecreatetruecolor($this->getDestWidth(), $this->getDestHeight());
+                }
             }
 
             imagealphablending($dest_image, false);
             imagesavealpha($dest_image, true);
+
+            $background = imagecolorallocatealpha($dest_image, 255, 255, 255, 127);
+            imagecolortransparent($dest_image, $background);
+            imagefill($dest_image, 0, 0, $background);
             break;
         }
 
         imageinterlace($dest_image, $this->interlace);
-        
+
         imagegammacorrect($this->source_image, 2.2, 1.0);
+
+        if( !empty($exact_size) && is_array($exact_size) ) {
+            if ($this->getSourceHeight() < $this->getSourceWidth()) {
+                $this->dest_x = 0;
+                $this->dest_y = ($exact_size[1] - $this->getDestHeight()) / 2;
+            }
+            if ($this->getSourceHeight() > $this->getSourceWidth()) {
+                $this->dest_x = ($exact_size[0] - $this->getDestWidth()) / 2;
+                $this->dest_y = 0;
+            }
+        }
 
         imagecopyresampled(
             $dest_image,