crop

README.md

@@ -8,6 +8,7 @@ php-image
 * [Installation](#installation)
 * [Open image](#open-image)
 * [Resize image](#resize-image)
+* [Crop image](#crop-image)
 * [Rotate image](#rotate-image)
 * [Flip image](#flip-image)
 * [Filters](#filters)
@@ -77,6 +78,19 @@ $image->addResizeStrategyNamespace('\Vendor\ResizeStrategy');
 ```
 Classes searches in priority of adding.
 
+Crop image
+----------
+
+To get part of image by specified wifth and height and in defined coordinates use:
+```php
+$x = 10;
+$y = 10;
+$width = 20;
+$height = 20;
+
+$image->crop($x, $y, $width, $height);
+```
+
 Rotate image
 ------------
 

src/Image.php

@@ -274,6 +274,25 @@ public function filter(\Sokil\Image\AbstractFilterStrategy $filterStrategy)
         return $this;
     }
 
+    public function crop($x, $y, $width, $height)
+    {
+        $croppedImageResource = imagecreatetruecolor($width, $height);
+        imagecopyresampled(
+            $croppedImageResource, 
+            $this->_resource, 
+            0, 
+            0, 
+            $x, 
+            $y, 
+            $width, 
+            $height, 
+            $width, 
+            $height
+        );
+
+        $this->loadResource($croppedImageResource);
+    }
+
     public function appendElementAtPosition(AbstractElement $element, $x, $y)
     {
         $element->draw($this->_resource, $x, $y);

tests/ImageTest.php

@@ -207,4 +207,14 @@ public function testAppendElement_TextElement()
 
         $this->assertEquals(array(255, 0, 0, 0), $color);
     }
+
+    public function testCrop()
+    {
+        $image = $this->_factory->openImage(__DIR__ . '/test.png');
+        $image->crop(10, 10, 10, 10);
+
+        $this->assertEquals(10, imagesx($image->getResource()));
+        $this->assertEquals(10, imagesy($image->getResource()));
+        $this->assertEquals([0, 0, 255, 0], Rgb::fromInt(imagecolorat($image->getResource(), 5, 5))->toArray());
+    }
 }