Standard::resample() - Code Metrics - Inspection of "Use GDlib imagescale() if available for best resul..." - aimeos/aimeos-core - Measure and Improve Code Quality continuously with Scrutinizer

Completed

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by Aimeos

created 2017-01-13 10:43 UTC

Standard::resample() C

↳ Parent: Standard

Complexity

Conditions	7
Paths	10

Size

Total Lines	32
Code Lines	16

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	7
eloc	16
nc	10
nop	5
dl	0
loc	32
rs	6.7272
c	0
b	0
f	0

<?php

/**
 * @copyright Metaways Infosystems GmbH, 2014
 * @license LGPLv3, http://opensource.org/licenses/LGPL-3.0
 * @copyright Aimeos (aimeos.org), 2015-2017
 * @package MW
 * @subpackage Media
 */


namespace Aimeos\MW\Media\Image;


/**
 * Default image class using GDLib.
 *
 * @package MW
 * @subpackage Media
 */
class Standard
	extends \Aimeos\MW\Media\Image\Base

	implements \Aimeos\MW\Media\Image\Iface
{
	private $info;
	private $image;
	private $origimage;
	private $options;


	/**
	 * Initializes the new image object.
	 *
	 * @param string $content File content
	 * @param string $mimetype Mime type of the media data
	 * @param array $options Associative list of configuration options
	 * @throws \Aimeos\MW\Media\Exception If image couldn't be retrieved from the given file name
	 */
	public function __construct( $content, $mimetype, array $options )
	{
		parent::__construct( $mimetype );

		if( ( $this->image = @imagecreatefromstring( $content ) ) === false ) {
			throw new \Aimeos\MW\Media\Exception( sprintf( 'The image type isn\'t supported by GDlib.') );
		}

		if( ( $this->info = getimagesizefromstring( $content ) ) === false ) {
			throw new \Aimeos\MW\Media\Exception( sprintf( 'Unable to retrieve image size' ) );
		}

		if( imagealphablending( $this->image, false ) === false ) {
			throw new \Aimeos\MW\Media\Exception( sprintf( 'GD library failed (imagealphablending)') );
		}

		$this->options = $options;
	}


	/**
	 * Cleans up
	 */
	public function __destruct()
	{
		if( $this->origimage ) {
			imagedestroy( $this->origimage );
		}

		if( $this->image ) {
			imagedestroy( $this->image );
		}
	}


	/**
	 * Stores the media data at the given file name.
	 *
	 * @param string|null $filename File name to save the data into or null to return the data
	 * @param string|null $mimetype Mime type to save the content as or null to leave the mime type unchanged
	 * @return string|null File content if file name is null or null if data is saved to the given file name
	 * @throws \Aimeos\MW\Media\Exception If image couldn't be saved to the given file name
	 */
	public function save( $filename = null, $mimetype = null )
	{
		if( $mimetype === null ) {
			$mimetype = $this->getMimeType();
		}

		$quality = 90;
		if( isset( $this->options['image']['quality'] ) ) {
			$quality = max( min( (int) $this->options['image']['quality'], 100 ), 0 );
		}

		try
		{
			ob_start();

			switch( $mimetype )
			{
				case 'image/gif':

					if( @imagegif( $this->image, $filename ) === false ) {
						throw new \Aimeos\MW\Media\Exception( sprintf( 'Unable to save image to file "%1$s"', $filename ) );
					}

					break;

				case 'image/jpeg':

					if( @imagejpeg( $this->image, $filename, $quality ) === false ) {
						throw new \Aimeos\MW\Media\Exception( sprintf( 'Unable to save image to file "%1$s"', $filename ) );
					}

					break;

				case 'image/png':

					if( imagesavealpha( $this->image, true ) === false ) {
						throw new \Aimeos\MW\Media\Exception( sprintf( 'GD library failed (imagesavealpha)') );
					}

					if( @imagepng( $this->image, $filename, (int) 10 - $quality / 10 ) === false ) {
						throw new \Aimeos\MW\Media\Exception( sprintf( 'Unable to save image to file "%1$s"', $filename ) );
					}

					break;

				default:
					throw new \Aimeos\MW\Media\Exception( sprintf( 'File format "%1$s" is not supported', $this->getMimeType() ) );
			}

			if( $filename === null ) {
				return ob_get_clean();
			}
		}
		catch( \Exception $e )
		{
			ob_end_clean();
			throw $e;
		}
	}


	/**
	 * Scales the image to the given width and height.
	 *
	 * @param integer $width New width of the image
	 * @param integer $height New height of the image
	 * @param boolean $fit True to keep the width/height ratio of the image
	 * @return \Aimeos\MW\Media\Iface Self object for method chaining
	 */
	public function scale( $width, $height, $fit = true )
	{
		if( $fit === true )
		{
			list( $width, $height ) = $this->getSizeFitted( $this->info[0], $this->info[1], $width, $height );

			if( $this->info[0] <= $width && $this->info[1] <= $height ) {
				return $this;
			}
		}

		if( function_exists( 'imagescale' ) === true )
		{
			if( ( $result = imagescale( $this->image, $width, $height, IMG_BICUBIC ) ) === false ) {
				throw new \Aimeos\MW\Media\Exception( 'Unable to scale image' );
			}

			$this->image = $result;
		}
		else
		{
			$this->image = $this->resample( $this->image, $this->info[0], $this->info[1], $width, $height );
		}

		$this->info[0] = $width;
		$this->info[1] = $height;

		return $this;
	}


	/**
	 * Resamples the image to the given width and height.
	 *
	 * @param resource GDlib image object
	 * @param integer $srcWidth Width of the existing image
	 * @param integer $srcHeight Height of the existing image
	 * @param integer $destWidth Width of the new image
	 * @param integer $destHeight Height of the new image
	 * @return resource New GDlib image object
	 */
	protected function resample( $image, $srcWidth, $srcHeight, $destWidth, $destHeight )
	{
		if( ( $newImage = imagecreatetruecolor( $destWidth, $destHeight ) ) === false ) {
			throw new \Aimeos\MW\Media\Exception( 'Unable to create new image' );
		}

		try
		{
			if( imagealphablending( $newImage, false ) === false ) {
				throw new \Aimeos\MW\Media\Exception( sprintf( 'GD library failed (imagealphablending)') );
			}

			if( ( $transparent = imagecolorallocatealpha( $newImage, 255, 255, 255, 127 ) ) === false ) {
				throw new \Aimeos\MW\Media\Exception( sprintf( 'GD library failed (imagecolorallocatealpha)') );
			}

			if( imagefilledrectangle( $newImage, 0, 0, $destWidth, $destHeight, $transparent ) === false ) {
				throw new \Aimeos\MW\Media\Exception( sprintf( 'GD library failed (imagefilledrectangle)') );
			}

			if( imagecopyresampled( $newImage, $image, 0, 0, 0, 0, $destWidth, $destHeight, $srcWidth, $srcHeight ) === false ) {
				throw new \Aimeos\MW\Media\Exception( 'Unable to resize image' );
			}
		}
		catch( \Exception $e )
		{
			imagedestroy( $newImage );
			throw $e;
		}

		return $newImage;
	}
}


1			<?php
2
3			/**
4			* @copyright Metaways Infosystems GmbH, 2014
5			* @license LGPLv3, http://opensource.org/licenses/LGPL-3.0
6			* @copyright Aimeos (aimeos.org), 2015-2017
7			* @package MW
8			* @subpackage Media
9			*/
10
11
12			namespace Aimeos\MW\Media\Image;
13
14
15			/**
16			* Default image class using GDLib.
17			*
18			* @package MW
19			* @subpackage Media
20			*/
21			class Standard
22			extends \Aimeos\MW\Media\Image\Base
			0 ignored issues – show Coding Style introduced 2016-05-25 21:53 UTC by Report Bug Copy Issue Report Expected 0 spaces between "Base" and comma; 1 found Loading history...
23			implements \Aimeos\MW\Media\Image\Iface
24			{
25			private $info;
26			private $image;
27			private $origimage;
28			private $options;
29
30
31			/**
32			* Initializes the new image object.
33			*
34			* @param string $content File content
35			* @param string $mimetype Mime type of the media data
36			* @param array $options Associative list of configuration options
37			* @throws \Aimeos\MW\Media\Exception If image couldn't be retrieved from the given file name
38			*/
39			public function __construct( $content, $mimetype, array $options )
40			{
41			parent::__construct( $mimetype );
42
43			if( ( $this->image = @imagecreatefromstring( $content ) ) === false ) {
44			throw new \Aimeos\MW\Media\Exception( sprintf( 'The image type isn\'t supported by GDlib.') );
45			}
46
47			if( ( $this->info = getimagesizefromstring( $content ) ) === false ) {
48			throw new \Aimeos\MW\Media\Exception( sprintf( 'Unable to retrieve image size' ) );
49			}
50
51			if( imagealphablending( $this->image, false ) === false ) {
52			throw new \Aimeos\MW\Media\Exception( sprintf( 'GD library failed (imagealphablending)') );
53			}
54
55			$this->options = $options;
56			}
57
58
59			/**
60			* Cleans up
61			*/
62			public function __destruct()
63			{
64			if( $this->origimage ) {
65			imagedestroy( $this->origimage );
66			}
67
68			if( $this->image ) {
69			imagedestroy( $this->image );
70			}
71			}
72
73
74			/**
75			* Stores the media data at the given file name.
76			*
77			* @param string\|null $filename File name to save the data into or null to return the data
78			* @param string\|null $mimetype Mime type to save the content as or null to leave the mime type unchanged
79			* @return string\|null File content if file name is null or null if data is saved to the given file name
80			* @throws \Aimeos\MW\Media\Exception If image couldn't be saved to the given file name
81			*/
82			public function save( $filename = null, $mimetype = null )
83			{
84			if( $mimetype === null ) {
85			$mimetype = $this->getMimeType();
86			}
87
88			$quality = 90;
89			if( isset( $this->options['image']['quality'] ) ) {
90			$quality = max( min( (int) $this->options['image']['quality'], 100 ), 0 );
91			}
92
93			try
94			{
95			ob_start();
96
97			switch( $mimetype )
98			{
99			case 'image/gif':
100
101			if( @imagegif( $this->image, $filename ) === false ) {
102			throw new \Aimeos\MW\Media\Exception( sprintf( 'Unable to save image to file "%1$s"', $filename ) );
103			}
104
105			break;
106
107			case 'image/jpeg':
108
109			if( @imagejpeg( $this->image, $filename, $quality ) === false ) {
110			throw new \Aimeos\MW\Media\Exception( sprintf( 'Unable to save image to file "%1$s"', $filename ) );
111			}
112
113			break;
114
115			case 'image/png':
116
117			if( imagesavealpha( $this->image, true ) === false ) {
118			throw new \Aimeos\MW\Media\Exception( sprintf( 'GD library failed (imagesavealpha)') );
119			}
120
121			if( @imagepng( $this->image, $filename, (int) 10 - $quality / 10 ) === false ) {
122			throw new \Aimeos\MW\Media\Exception( sprintf( 'Unable to save image to file "%1$s"', $filename ) );
123			}
124
125			break;
126
127			default:
128			throw new \Aimeos\MW\Media\Exception( sprintf( 'File format "%1$s" is not supported', $this->getMimeType() ) );
129			}
130
131			if( $filename === null ) {
132			return ob_get_clean();
133			}
134			}
135			catch( \Exception $e )
136			{
137			ob_end_clean();
138			throw $e;
139			}
140			}
141
142
143			/**
144			* Scales the image to the given width and height.
145			*
146			* @param integer $width New width of the image
147			* @param integer $height New height of the image
148			* @param boolean $fit True to keep the width/height ratio of the image
149			* @return \Aimeos\MW\Media\Iface Self object for method chaining
150			*/
151			public function scale( $width, $height, $fit = true )
152			{
153			if( $fit === true )
154			{
155			list( $width, $height ) = $this->getSizeFitted( $this->info[0], $this->info[1], $width, $height );
156
157			if( $this->info[0] <= $width && $this->info[1] <= $height ) {
158			return $this;
159			}
160			}
161
162			if( function_exists( 'imagescale' ) === true )
163			{
164			if( ( $result = imagescale( $this->image, $width, $height, IMG_BICUBIC ) ) === false ) {
165			throw new \Aimeos\MW\Media\Exception( 'Unable to scale image' );
166			}
167
168			$this->image = $result;
169			}
170			else
171			{
172			$this->image = $this->resample( $this->image, $this->info[0], $this->info[1], $width, $height );
173			}
174
175			$this->info[0] = $width;
176			$this->info[1] = $height;
177
178			return $this;
179			}
180
181
182			/**
183			* Resamples the image to the given width and height.
184			*
185			* @param resource GDlib image object
186			* @param integer $srcWidth Width of the existing image
187			* @param integer $srcHeight Height of the existing image
188			* @param integer $destWidth Width of the new image
189			* @param integer $destHeight Height of the new image
190			* @return resource New GDlib image object
191			*/
192			protected function resample( $image, $srcWidth, $srcHeight, $destWidth, $destHeight )
193			{
194			if( ( $newImage = imagecreatetruecolor( $destWidth, $destHeight ) ) === false ) {
195			throw new \Aimeos\MW\Media\Exception( 'Unable to create new image' );
196			}
197
198			try
199			{
200			if( imagealphablending( $newImage, false ) === false ) {
201			throw new \Aimeos\MW\Media\Exception( sprintf( 'GD library failed (imagealphablending)') );
202			}
203
204			if( ( $transparent = imagecolorallocatealpha( $newImage, 255, 255, 255, 127 ) ) === false ) {
205			throw new \Aimeos\MW\Media\Exception( sprintf( 'GD library failed (imagecolorallocatealpha)') );
206			}
207
208			if( imagefilledrectangle( $newImage, 0, 0, $destWidth, $destHeight, $transparent ) === false ) {
209			throw new \Aimeos\MW\Media\Exception( sprintf( 'GD library failed (imagefilledrectangle)') );
210			}
211
212			if( imagecopyresampled( $newImage, $image, 0, 0, 0, 0, $destWidth, $destHeight, $srcWidth, $srcHeight ) === false ) {
213			throw new \Aimeos\MW\Media\Exception( 'Unable to resize image' );
214			}
215			}
216			catch( \Exception $e )
217			{
218			imagedestroy( $newImage );
219			throw $e;
220			}
221
222			return $newImage;
223			}
224			}
225

aimeos / aimeos-core

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