From 486743dfcf515bf7d9d22049a63910445fe1a67b Mon Sep 17 00:00:00 2001
From: Oliver Vogel <oliver@olivervogel.net>
Date: Sun, 3 Feb 2013 13:57:49 +0100
Subject: [PATCH] added brightness and contrast methods

---
 README.md                        |  2 ++
 src/Intervention/Image/Image.php | 24 ++++++++++++++++++++++++
 tests/ImageTest.php              | 16 ++++++++++++++++
 3 files changed, 42 insertions(+)

diff --git a/README.md b/README.md
index e12f8763..991c7560 100644
--- a/README.md
+++ b/README.md
@@ -46,6 +46,8 @@ Add the facade of this package to the `$aliases` array.
 * Image::resize - Resize image based on given width and/or height
 * Image::grab - Cut out a detail of the image in given ratio and resize to output size
 * Image::insert - Insert another image on top of the current image
+* Image::brightness - Changes brightness of current image
+* Image::contrast - Changes contrast of current image
 * Image::pixelate - Pixelate current image
 * Image::greyscale - Turn current image into a greyscale version
 * Image::text - Write text in current image
diff --git a/src/Intervention/Image/Image.php b/src/Intervention/Image/Image.php
index 45837dd3..f2a868dc 100644
--- a/src/Intervention/Image/Image.php
+++ b/src/Intervention/Image/Image.php
@@ -405,6 +405,30 @@ class Image
         return $this;
     }
 
+    /**
+     * Changes the brightness of the current image
+     * 
+     * @param  int $level [description]
+     * @return Image
+     */
+    public function brightness($level)
+    {
+        imagefilter($this->resource, IMG_FILTER_BRIGHTNESS, $level);
+        return $this;
+    }
+
+    /**
+     * Changes the contrast of the current image
+     * 
+     * @param  int $level
+     * @return Image    
+     */
+    public function contrast($level)
+    {
+        imagefilter($this->resource, IMG_FILTER_CONTRAST, $level);
+        return $this;
+    }
+
     /**
      * Pixelate current image
      * 
diff --git a/tests/ImageTest.php b/tests/ImageTest.php
index cdc2a87a..2a0f7c65 100644
--- a/tests/ImageTest.php
+++ b/tests/ImageTest.php
@@ -294,4 +294,20 @@ class ImageTest extends PHPUnit_Framework_Testcase
 
     }
 
+    public function testBrightnessImage()
+    {
+        $img = $this->getTestImage();
+        $img->brightness(50);
+        $img->brightness(-50);
+        $this->assertInstanceOf('Intervention\Image\Image', $img);
+    }
+
+    public function testContrastImage()
+    {
+        $img = $this->getTestImage();
+        $img->contrast(50);
+        $img->contrast(-50);
+        $this->assertInstanceOf('Intervention\Image\Image', $img);
+    }
+
 }
\ No newline at end of file