Standard::scale() - Code Metrics - Inspection of "Use WEBP images by default for previews" - aimeos/aimeos-core - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( 8e0f36...cdb6de )

by Aimeos

created 2022-01-10 12:58 UTC

Standard::scale() B

↳ Parent: Standard

Complexity

Conditions	8
Paths	4

Size

Total Lines	21
Code Lines	11

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	8
eloc	11
c	0
b	0
f	0
nc	4
nop	3
dl	0
loc	21
rs	8.4444

<?php

/**
 * @license LGPLv3, https://opensource.org/licenses/LGPL-3.0
 * @copyright Metaways Infosystems GmbH, 2014
 * @copyright Aimeos (aimeos.org), 2015-2022
 * @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 static $watermark;

	private $options;
	private $image;
	private $mimetype;


	/**
	 * 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( string $content, string $mimetype, array $options )
	{
		parent::__construct( $mimetype );

		if( !self::$watermark && isset( $options['image']['watermark'] ) )
		{
			if( ( $watermark = @file_get_contents( $options['image']['watermark'] ) ) === false )
			{
				$msg = sprintf( 'Watermark image "%1$s" not found', $options['image']['watermark'] );
				throw new \Aimeos\MW\Media\Exception( $msg );
			}

			if( ( $image = @imagecreatefromstring( $watermark ) ) === false ) {
				throw new \Aimeos\MW\Media\Exception( sprintf( 'The watermark image isn\'t supported by GDlib' ) );
			}

			self::$watermark = $image;
		}

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

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

		$this->options = $options;
		$this->mimetype = $mimetype;
	}


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


	/**
	 * Returns the height of the image
	 *
	 * @return int Height in pixel
	 */
	public function getHeight() : int
	{
		return imagesy( $this->image );
	}


	/**
	 * Returns the width of the image
	 *
	 * @return int Width in pixel
	 */
	public function getWidth() : int
	{
		return imagesx( $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( string $filename = null, string $mimetype = null ) : ?string
	{
		$result = null;

		if( $mimetype === null ) {
			$mimetype = $this->getMimeType();
		}

		if( self::$watermark !== null ) {
			$this->watermark();
		}

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

		if( $filename === null ) {
			ob_start();
		}

		try
		{
			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/webp':

					if( @imagewebp( $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', $mimetype ) );
			}
		}
		finally
		{
			if( $filename === null ) {
				$result = ob_get_clean();
			}
		}

		return $result;
	}


	/**
	 * Scales the image to the given width and height.
	 *
	 * @param int|null $width New width of the image or null for automatic calculation
	 * @param int|null $height New height of the image or null for automatic calculation
	 * @param int $fit "0" keeps image ratio, "1" adds padding while "2" crops image to enforce image size
	 * @return \Aimeos\MW\Media\Image\Iface Self object for method chaining
	 */
	public function scale( int $width = null, int $height = null, int $fit = 0 ) : Iface
	{
		$w = imagesx( $this->image );
		$h = imagesy( $this->image );

		if( $fit === 2 && $width && $height )
0   == false // true
0   == null  // true
123 == false // false
123 == null  // false

// It is often better to use strict comparison
0 === false // false
0 === null  // false
		{
			$ratio = ( $w < $h ? $width / $w : $height / $h );
			$newHeight = (int) $h * $ratio;
			$newWidth = (int) $w * $ratio;
		}
		else
		{
			list( $newWidth, $newHeight ) = $this->getSizeFitted( $w, $h, $width, $height );

			if( !$fit && $w <= $newWidth && $h <= $newHeight ) {
				return $this;
			}
		}

		return $this->resize( $newWidth, $newHeight, $width, $height, !$fit );
	}


	/**
	 * Returns the supported image mime types
	 *
	 * @param array|string $mimetypes Mime type or list of mime types to check against
	 * @return array List of supported mime types
	 */
	public static function supports( $mimetypes = [] ) : array
	{
		$types = [
			IMG_BMP => 'image/bmp', IMG_GIF => 'image/gif', IMG_JPG => 'image/jpeg', IMG_PNG => 'image/png',
			IMG_WBMP => 'image/wbmp', IMG_XPM => 'image/xpm', IMG_WEBP => 'image/webp'
		];
		$list = [];
		$supported = imagetypes();

		foreach( $types as $key => $type )
		{
			if( $key & $supported ) {
				$list[] = $type;
			}
		}

		return empty( $mimetypes ) ? $list : array_intersect( $list, (array) $mimetypes );
	}


	/**
	 * Resizes and crops the image if necessary
	 *
	 * @param int $scaleWidth Width of the image before cropping
	 * @param int $scaleHeight Height of the image before cropping
	 * @param int|null $width New width of the image
	 * @param int|null $height New height of the image
	 * @param bool $fit True to keep the width/height ratio of the image
	 * @return \Aimeos\MW\Media\Image\Iface Resized media object
	 */
	protected function resize( int $scaleWidth, int $scaleHeight, int $width = null, int $height = null, bool $fit = true ) : Iface
	{
		if( !( $width || $height ) ) {
0   == false // true
0   == null  // true
123 == false // false
123 == null  // false

// It is often better to use strict comparison
0 === false // false
0 === null  // false
			return $this;
		}

		if( ( $result = imagescale( $this->image, $scaleWidth, $scaleHeight ) ) === false ) {
			throw new \Aimeos\MW\Media\Exception( 'Unable to scale image' );
		}

		$newMedia = clone $this;

		$width = ( $width ?: $scaleWidth );
		$height = ( $height ?: $scaleHeight );

		$x0 = (int) ( $width / 2 - $scaleWidth / 2 );
		$y0 = (int) ( $height / 2 - $scaleHeight / 2 );

		if( $fit === false && ( $x0 || $y0 ) )
		{
			if( ( $newImage = imagecreatetruecolor( $width, $height ) ) === false ) {
				throw new \Aimeos\MW\Media\Exception( 'Unable to create new image' );
			}

			imagesavealpha( $newImage, true );
			$alpha = in_array( $this->mimetype, ['image/gif', 'image/png'] ) ? 127 : 0;

			if( ( $bg = imagecolorallocatealpha( $newImage, 255, 255, 255, $alpha ) ) === false ) {
				throw new \Aimeos\MW\Media\Exception( 'Unable to allocate color' );
			}

			if( imagefill( $newImage, 0, 0, $bg ) === false ) {
				throw new \Aimeos\MW\Media\Exception( 'Unable to fill background' );
			}

			if( imagecopy( $newImage, $result, $x0, $y0, 0, 0, $scaleWidth, $scaleHeight ) === false ) {
				throw new \Aimeos\MW\Media\Exception( 'Unable to crop image' );
			}

			imagedestroy( $result );
			$newMedia->image = $newImage;
		}
		else
		{
			$newMedia->image = $result;
		}

		return $newMedia;
	}


	/**
	 * Adds the configured water mark to the image
	 */
	protected function watermark()
	{
		$ww = imagesx( self::$watermark );
		$wh = imagesy( self::$watermark );

		$ratio = min( $this->getWidth() / $ww, $this->getHeight() / $wh );
		$newHeight = (int) ( $wh * $ratio );
		$newWidth = (int) ( $ww * $ratio );

		if( ( $wimage = imagescale( self::$watermark, $newWidth, $newHeight ) ) === false ) {
			throw new \Aimeos\MW\Media\Exception( 'Unable to scale image' );
		}

		$dx = (int) ( $this->getWidth() - $newWidth ) / 2;
		$dy = (int) ( $this->getHeight() - $newHeight ) / 2;

		if( imagecopy( $this->image, $wimage, $dx, $dy, 0, 0, $newWidth, $newHeight ) === false ) {
			throw new \Aimeos\MW\Media\Exception( 'Failed to apply watermark immage' );
		}

		imagedestroy( $wimage );
	}
}


1			<?php
2
3			/**
4			* @license LGPLv3, https://opensource.org/licenses/LGPL-3.0
5			* @copyright Metaways Infosystems GmbH, 2014
6			* @copyright Aimeos (aimeos.org), 2015-2022
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
23			implements \Aimeos\MW\Media\Image\Iface
24			{
25			private static $watermark;
26
27			private $options;
28			private $image;
29			private $mimetype;
30
31
32			/**
33			* Initializes the new image object.
34			*
35			* @param string $content File content
36			* @param string $mimetype Mime type of the media data
37			* @param array $options Associative list of configuration options
38			* @throws \Aimeos\MW\Media\Exception If image couldn't be retrieved from the given file name
39			*/
40			public function __construct( string $content, string $mimetype, array $options )
41			{
42			parent::__construct( $mimetype );
43
44			if( !self::$watermark && isset( $options['image']['watermark'] ) )
45			{
46			if( ( $watermark = @file_get_contents( $options['image']['watermark'] ) ) === false )
47			{
48			$msg = sprintf( 'Watermark image "%1$s" not found', $options['image']['watermark'] );
49			throw new \Aimeos\MW\Media\Exception( $msg );
50			}
51
52			if( ( $image = @imagecreatefromstring( $watermark ) ) === false ) {
53			throw new \Aimeos\MW\Media\Exception( sprintf( 'The watermark image isn\'t supported by GDlib' ) );
54			}
55
56			self::$watermark = $image;
57			}
58
59			if( ( $this->image = @imagecreatefromstring( $content ) ) === false ) {
60			throw new \Aimeos\MW\Media\Exception( sprintf( 'The image type isn\'t supported by GDlib' ) );
61			}
62
63			if( imagealphablending( $this->image, true ) === false ) {
64			throw new \Aimeos\MW\Media\Exception( sprintf( 'GD library failed (imagealphablending)' ) );
65			}
66
67			$this->options = $options;
68			$this->mimetype = $mimetype;
69			}
70
71
72			/**
73			* Cleans up
74			*/
75			public function __destruct()
76			{
77			if( $this->image ) {
78			imagedestroy( $this->image );
79			}
80			}
81
82
83			/**
84			* Returns the height of the image
85			*
86			* @return int Height in pixel
87			*/
88			public function getHeight() : int
89			{
90			return imagesy( $this->image );
91			}
92
93
94			/**
95			* Returns the width of the image
96			*
97			* @return int Width in pixel
98			*/
99			public function getWidth() : int
100			{
101			return imagesx( $this->image );
102			}
103
104
105			/**
106			* Stores the media data at the given file name.
107			*
108			* @param string\|null $filename File name to save the data into or null to return the data
109			* @param string\|null $mimetype Mime type to save the content as or null to leave the mime type unchanged
110			* @return string\|null File content if file name is null or null if data is saved to the given file name
111			* @throws \Aimeos\MW\Media\Exception If image couldn't be saved to the given file name
112			*/
113			public function save( string $filename = null, string $mimetype = null ) : ?string
114			{
115			$result = null;
116
117			if( $mimetype === null ) {
118			$mimetype = $this->getMimeType();
119			}
120
121			if( self::$watermark !== null ) {
122			$this->watermark();
123			}
124
125			$quality = 90;
126			if( isset( $this->options['image']['quality'] ) ) {
127			$quality = max( min( (int) $this->options['image']['quality'], 100 ), 0 );
128			}
129
130			if( $filename === null ) {
131			ob_start();
132			}
133
134			try
135			{
136			switch( $mimetype )
137			{
138			case 'image/gif':
139
140			if( @imagegif( $this->image, $filename ) === false ) {
141			throw new \Aimeos\MW\Media\Exception( sprintf( 'Unable to save image to file "%1$s"', $filename ) );
142			}
143
144			break;
145
146			case 'image/jpeg':
147
148			if( @imagejpeg( $this->image, $filename, $quality ) === false ) {
149			throw new \Aimeos\MW\Media\Exception( sprintf( 'Unable to save image to file "%1$s"', $filename ) );
150			}
151
152			break;
153
154			case 'image/webp':
155
156			if( @imagewebp( $this->image, $filename, $quality ) === false ) {
157			throw new \Aimeos\MW\Media\Exception( sprintf( 'Unable to save image to file "%1$s"', $filename ) );
158			}
159
160			break;
161
162			case 'image/png':
163
164			if( imagesavealpha( $this->image, true ) === false ) {
165			throw new \Aimeos\MW\Media\Exception( sprintf( 'GD library failed (imagesavealpha)' ) );
166			}
167
168			if( @imagepng( $this->image, $filename, (int) 10 - $quality / 10 ) === false ) {
169			throw new \Aimeos\MW\Media\Exception( sprintf( 'Unable to save image to file "%1$s"', $filename ) );
170			}
171
172			break;
173
174			default:
175			throw new \Aimeos\MW\Media\Exception( sprintf( 'File format "%1$s" is not supported', $mimetype ) );
176			}
177			}
178			finally
179			{
180			if( $filename === null ) {
181			$result = ob_get_clean();
182			}
183			}
184
185			return $result;
186			}
187
188
189			/**
190			* Scales the image to the given width and height.
191			*
192			* @param int\|null $width New width of the image or null for automatic calculation
193			* @param int\|null $height New height of the image or null for automatic calculation
194			* @param int $fit "0" keeps image ratio, "1" adds padding while "2" crops image to enforce image size
195			* @return \Aimeos\MW\Media\Image\Iface Self object for method chaining
196			*/
197			public function scale( int $width = null, int $height = null, int $fit = 0 ) : Iface
198			{
199			$w = imagesx( $this->image );
200			$h = imagesy( $this->image );
201
202			if( $fit === 2 && $width && $height )
			0 ignored issues – show Bug Best Practice introduced 2019-05-08 11:00 UTC by Report Bug Copy Issue Report The expression `$width` of type `integer\|null` is loosely compared to `true`; this is ambiguous if the integer can be 0. You might want to explicitly use `!== null` instead. In PHP, under loose comparison (like `==`, or `!=`, or `switch` conditions), values of different types might be equal. For `integer` values, zero is a special case, in particular the following results might be unexpected: 0 == false // true 0 == null // true 123 == false // false 123 == null // false // It is often better to use strict comparison 0 === false // false 0 === null // false Loading history... Bug Best Practice introduced 2019-05-08 11:00 UTC by Report Bug Copy Issue Report The expression `$height` of type `integer\|null` is loosely compared to `true`; this is ambiguous if the integer can be 0. You might want to explicitly use `!== null` instead. In PHP, under loose comparison (like `==`, or `!=`, or `switch` conditions), values of different types might be equal. For `integer` values, zero is a special case, in particular the following results might be unexpected: 0 == false // true 0 == null // true 123 == false // false 123 == null // false // It is often better to use strict comparison 0 === false // false 0 === null // false Loading history...
203			{
204			$ratio = ( $w < $h ? $width / $w : $height / $h );
205			$newHeight = (int) $h * $ratio;
206			$newWidth = (int) $w * $ratio;
207			}
208			else
209			{
210			list( $newWidth, $newHeight ) = $this->getSizeFitted( $w, $h, $width, $height );
211
212			if( !$fit && $w <= $newWidth && $h <= $newHeight ) {
213			return $this;
214			}
215			}
216
217			return $this->resize( $newWidth, $newHeight, $width, $height, !$fit );
218			}
219
220
221			/**
222			* Returns the supported image mime types
223			*
224			* @param array\|string $mimetypes Mime type or list of mime types to check against
225			* @return array List of supported mime types
226			*/
227			public static function supports( $mimetypes = [] ) : array
228			{
229			$types = [
230			IMG_BMP => 'image/bmp', IMG_GIF => 'image/gif', IMG_JPG => 'image/jpeg', IMG_PNG => 'image/png',
231			IMG_WBMP => 'image/wbmp', IMG_XPM => 'image/xpm', IMG_WEBP => 'image/webp'
232			];
233			$list = [];
234			$supported = imagetypes();
235
236			foreach( $types as $key => $type )
237			{
238			if( $key & $supported ) {
239			$list[] = $type;
240			}
241			}
242
243			return empty( $mimetypes ) ? $list : array_intersect( $list, (array) $mimetypes );
244			}
245
246
247			/**
248			* Resizes and crops the image if necessary
249			*
250			* @param int $scaleWidth Width of the image before cropping
251			* @param int $scaleHeight Height of the image before cropping
252			* @param int\|null $width New width of the image
253			* @param int\|null $height New height of the image
254			* @param bool $fit True to keep the width/height ratio of the image
255			* @return \Aimeos\MW\Media\Image\Iface Resized media object
256			*/
257			protected function resize( int $scaleWidth, int $scaleHeight, int $width = null, int $height = null, bool $fit = true ) : Iface
258			{
259			if( !( $width \|\| $height ) ) {
			0 ignored issues – show Bug Best Practice introduced 2021-05-10 07:17 UTC by Report Bug Copy Issue Report The expression `$height` of type `integer\|null` is loosely compared to `false`; this is ambiguous if the integer can be 0. You might want to explicitly use `=== null` instead. In PHP, under loose comparison (like `==`, or `!=`, or `switch` conditions), values of different types might be equal. For `integer` values, zero is a special case, in particular the following results might be unexpected: 0 == false // true 0 == null // true 123 == false // false 123 == null // false // It is often better to use strict comparison 0 === false // false 0 === null // false Loading history... Bug Best Practice introduced 2021-05-10 07:17 UTC by Report Bug Copy Issue Report The expression `$width` of type `integer\|null` is loosely compared to `false`; this is ambiguous if the integer can be 0. You might want to explicitly use `=== null` instead. In PHP, under loose comparison (like `==`, or `!=`, or `switch` conditions), values of different types might be equal. For `integer` values, zero is a special case, in particular the following results might be unexpected: 0 == false // true 0 == null // true 123 == false // false 123 == null // false // It is often better to use strict comparison 0 === false // false 0 === null // false Loading history...
260			return $this;
261			}
262
263			if( ( $result = imagescale( $this->image, $scaleWidth, $scaleHeight ) ) === false ) {
264			throw new \Aimeos\MW\Media\Exception( 'Unable to scale image' );
265			}
266
267			$newMedia = clone $this;
268
269			$width = ( $width ?: $scaleWidth );
270			$height = ( $height ?: $scaleHeight );
271
272			$x0 = (int) ( $width / 2 - $scaleWidth / 2 );
273			$y0 = (int) ( $height / 2 - $scaleHeight / 2 );
274
275			if( $fit === false && ( $x0 \|\| $y0 ) )
276			{
277			if( ( $newImage = imagecreatetruecolor( $width, $height ) ) === false ) {
278			throw new \Aimeos\MW\Media\Exception( 'Unable to create new image' );
279			}
280
281			imagesavealpha( $newImage, true );
282			$alpha = in_array( $this->mimetype, ['image/gif', 'image/png'] ) ? 127 : 0;
283
284			if( ( $bg = imagecolorallocatealpha( $newImage, 255, 255, 255, $alpha ) ) === false ) {
285			throw new \Aimeos\MW\Media\Exception( 'Unable to allocate color' );
286			}
287
288			if( imagefill( $newImage, 0, 0, $bg ) === false ) {
289			throw new \Aimeos\MW\Media\Exception( 'Unable to fill background' );
290			}
291
292			if( imagecopy( $newImage, $result, $x0, $y0, 0, 0, $scaleWidth, $scaleHeight ) === false ) {
293			throw new \Aimeos\MW\Media\Exception( 'Unable to crop image' );
294			}
295
296			imagedestroy( $result );
297			$newMedia->image = $newImage;
298			}
299			else
300			{
301			$newMedia->image = $result;
302			}
303
304			return $newMedia;
305			}
306
307
308			/**
309			* Adds the configured water mark to the image
310			*/
311			protected function watermark()
312			{
313			$ww = imagesx( self::$watermark );
314			$wh = imagesy( self::$watermark );
315
316			$ratio = min( $this->getWidth() / $ww, $this->getHeight() / $wh );
317			$newHeight = (int) ( $wh * $ratio );
318			$newWidth = (int) ( $ww * $ratio );
319
320			if( ( $wimage = imagescale( self::$watermark, $newWidth, $newHeight ) ) === false ) {
321			throw new \Aimeos\MW\Media\Exception( 'Unable to scale image' );
322			}
323
324			$dx = (int) ( $this->getWidth() - $newWidth ) / 2;
325			$dy = (int) ( $this->getHeight() - $newHeight ) / 2;
326
327			if( imagecopy( $this->image, $wimage, $dx, $dy, 0, 0, $newWidth, $newHeight ) === false ) {
328			throw new \Aimeos\MW\Media\Exception( 'Failed to apply watermark immage' );
329			}
330
331			imagedestroy( $wimage );
332			}
333			}
334

aimeos / aimeos-core

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