Image::savePng() - Code Metrics - Inspection of "create image type strategies" - delboy1978uk/image - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( b2f7ca...a3ce9b )

by Derek Stephen

created 2017-09-28 10:28 UTC

Image::savePng() A

↳ Parent: Image::renderImage()

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	3
CRAP Score	1

Importance

Changes

Metric	Value
cc	1
eloc	2
nc	1
nop	2
dl	0
loc	4
ccs	3
cts	3
cp	1
crap	1
rs	10
c	0
b	0
f	0

<?php

namespace Del;

use Del\Image\Exception\NotFoundException;
use Del\Image\Exception\NothingLoadedException;
use Del\Image\Strategy\GifStrategy;
use Del\Image\Strategy\ImageTypeStrategyInterface;
use Del\Image\Strategy\JpegStrategy;
use Del\Image\Strategy\PngStrategy;

class Image 
{
    /** @var resource $image */
    private $image;

    /** @var int $imageType */
    private $imageType;

    /** @var string $fileName */
    private $fileName;

    /** @var ImageTypeStrategyInterface $strategy */
    private $strategy;

    /** @var array $strategies */
    private $strategies = [
        IMAGETYPE_JPEG => JpegStrategy::class,
        IMAGETYPE_GIF => GifStrategy::class,
        IMAGETYPE_PNG => PngStrategy::class,
    ];

    /**
     * @param string $filename
     */
    public function __construct($filename = null)
    {
        if ($filename !== null) {
            $this->fileName = $filename;
            $this->load($filename);
        }
    }

    /**
     * @param $path
     * @throws NotFoundException
     */
    private function checkFileExists($path)
    {
        if (!file_exists($path)) {
            throw new NotFoundException("$path does not exist");
        }
    }


    /**
     * @param string $filename
     * @throws NotFoundException
     */
    public function load($filename)
    {
        $this->checkFileExists($filename);
        $imageInfo = getimagesize($filename);
        $this->imageType = $imageInfo[2];
        $this->strategy = new $this->strategies[$this->imageType]();
        $this->image = $this->strategy->create($filename);
    }


    /**
     *  @param string $filename
     *  @param int $compression
     *  @param string $permissions
     */
    public function save($filename = null, $compression = 100, $permissions = null)
    {
        $filename = ($filename) ?: $this->fileName;
        $this->strategy->save($this->image, $filename, $compression);
        $this->setPermissions($filename, $permissions);
    }

    /**
     * @param $filename
     * @param $permissions
     */
    private function setPermissions($filename, $permissions)
    {
        if ($permissions !== null) {
            chmod($filename, (int) $permissions);
        }
    }


    /**
     * @param bool $return either output directly
     * @return void|string image contents
     */
    public function output($return = false)
    {
        if ($return) {
            ob_start();
        }

        $this->renderImage();

        if ($return) {
            $contents = ob_get_flush();
            return $contents;
        }
    }

    private function renderImage()
    {
        switch ($this->imageType) {
            case IMAGETYPE_JPEG:
                imagejpeg($this->image);
                break;
            case IMAGETYPE_GIF:
                imagegif($this->image);
                break;
            case IMAGETYPE_PNG:
                imagealphablending($this->image, true);
                imagesavealpha($this->image, true);
                imagepng($this->image);
                break;
        }
    }

    /**
     * @return int
     */
    public function getWidth()
    {
        return imagesx($this->image);
    }

    /**
     * @return int
     */
    public function getHeight()
    {
        return imagesy($this->image);
    }

    /**
     * @param int $height
     */
    public function resizeToHeight($height)
    {
        $ratio = $height / $this->getHeight();
        $width = $this->getWidth() * $ratio;
        $this->resize($width, $height);
    }

    /**
     * @param int $width
     */
    public function resizeToWidth($width)
    {
        $ratio = $width / $this->getWidth();
        $height = $this->getHeight() * $ratio;
        $this->resize($width, $height);
    }

    /**
     * @param int $scale %
     */
    public function scale($scale)
    {
        $width = $this->getWidth() * $scale / 100;
        $height = $this->getHeight() * $scale / 100;
        $this->resize($width, $height);
    }

    /**
     * @param int $width
     * @param int $height
     */
    public function resizeAndCrop($width, $height)
    {
        $targetRatio = $width / $height;
        $actualRatio = $this->getWidth() / $this->getHeight();

        if ($targetRatio == $actualRatio) {
            // Scale to size
            $this->resize($width, $height);
        } elseif ($targetRatio > $actualRatio) {
            // Resize to width, crop extra height
            $this->resizeToWidth($width);
            $this->crop($width, $height);
        } else {
            // Resize to height, crop additional width
            $this->resizeToHeight($height);
            $this->crop($width, $height);
        }
    }


    /**
     *  Now with added Transparency resizing feature
     *  @param int $width
     *  @param int $height
     */
    public function resize($width, $height)
    {
        $newImage = imagecreatetruecolor($width, $height);

        $this->handleTransparency($newImage);

        // Now resample the image
        imagecopyresampled($newImage, $this->image, 0, 0, 0, 0, $width, $height, $this->getWidth(), $this->getHeight());

        // And allocate to $this
        $this->image = $newImage;
    }

    private function handleTransparency($resource)
    {
        if ($this->getImageType() == IMAGETYPE_JPEG) {
            return;
        }

        // Get transparency color's index number
        $transparency = imagecolortransparent($this->image);

        // Is a strange index other than -1 set?
        if ($transparency >= 0) {

            // deal with alpha channels
            $this->prepWithExistingIndex($resource, $transparency);

        } elseif ($this->getImageType() == IMAGETYPE_PNG) {

            // deal with alpha channels
            $this->prepTransparentPng($resource);
        }

    }

    /**
     * @param $resource
     * @param $index
     */
    private function prepWithExistingIndex($resource, $index)
    {
        // Get the array of RGB vals for the transparency index
        $transparentColor = imagecolorsforindex($this->image, $index);

        // Now allocate the color
        $transparency = imagecolorallocate($resource, $transparentColor['red'], $transparentColor['green'], $transparentColor['blue']);

        // Fill the background with the color
        imagefill($resource, 0, 0, $transparency);

        // And set that color as the transparent one
        imagecolortransparent($resource, $transparency);
    }

    /**
     * @param $resource
     */
    private function prepTransparentPng($resource)
    {
        // Set blending mode as false
        imagealphablending($resource, false);

        // Tell it we want to save alpha channel info
        imagesavealpha($resource, true);

        // Set the transparent color
        $color = imagecolorallocatealpha($resource, 0, 0, 0, 127);

        // Fill the image with nothingness
        imagefill($resource, 0, 0, $color);
    }


    /**
     * @param int $width
     * @param int $height
     * @param string $trim
     */
    public function crop($width, $height, $trim = 'center')
    {
        $offsetX = 0;
        $offsetY = 0;
        $currentWidth = $this->getWidth();
        $currentHeight = $this->getHeight();

        if ($trim != 'left') {
            $offsetX = $this->getOffsetX($currentWidth, $width, $trim);
            $offsetY = $this->getOffsetY($currentHeight, $height, $trim);
        }

        $newImage = imagecreatetruecolor($width, $height);
        imagecopyresampled($newImage, $this->image, 0, 0, $offsetX, $offsetY, $width, $height, $width, $height);
        $this->image = $newImage;
    }

    /**
     * @param $currentWidth
     * @param $width
     * @param $trim
     * @return float|int
     */
    private function getOffsetX($currentWidth, $width, $trim)
    {
        $offsetX = 0;
        if ($currentWidth > $width) {
            $diff = $currentWidth - $width;
            $offsetX = ($trim == 'center') ? $diff / 2 : $diff; //full diff for trim right
        }
        return $offsetX;
    }

    /**
     * @param $currentHeight
     * @param $height
     * @param $trim
     * @return float|int
     */
    private function getOffsetY($currentHeight, $height, $trim)
    {
        $offsetY = 0;
        if ($currentHeight > $height) {
            $diff = $currentHeight - $height;
            $offsetY = ($trim == 'center') ? $diff / 2 : $diff;
        }
        return $offsetY;
    }

    /**
     * @return mixed
     */
    public function getImageType()
    {
        return $this->imageType;
    }

    /**
     * @return mixed
     * @throws NothingLoadedException
     */
    public function getHeader()
    {
        if (!$this->strategy) {
            throw new NothingLoadedException();
        }
        return $this->strategy->getContentType();
    }

    /**
     *  Frees up memory
     */
    public function destroy()
    {
        imagedestroy($this->image);
    }
}


1		<?php
2
3		namespace Del;
4
5		use Del\Image\Exception\NotFoundException;
6		use Del\Image\Exception\NothingLoadedException;
7		use Del\Image\Strategy\GifStrategy;
8		use Del\Image\Strategy\ImageTypeStrategyInterface;
9		use Del\Image\Strategy\JpegStrategy;
10		use Del\Image\Strategy\PngStrategy;
11
12		class Image
13		{
14		/** @var resource $image */
15		private $image;
16
17		/** @var int $imageType */
18		private $imageType;
19
20		/** @var string $fileName */
21		private $fileName;
22
23		/** @var ImageTypeStrategyInterface $strategy */
24		private $strategy;
25
26		/** @var array $strategies */
27		private $strategies = [
28		IMAGETYPE_JPEG => JpegStrategy::class,
29		IMAGETYPE_GIF => GifStrategy::class,
30		IMAGETYPE_PNG => PngStrategy::class,
31		];
32
33		/**
34		* @param string $filename
35		*/
36	21	public function __construct($filename = null)
37		{
38	21	if ($filename !== null) {
39	1	$this->fileName = $filename;
40	1	$this->load($filename);
41		}
42	21	}
43
44		/**
45		* @param $path
46		* @throws NotFoundException
47		*/
48	20	private function checkFileExists($path)
49		{
50	20	if (!file_exists($path)) {
51	1	throw new NotFoundException("$path does not exist");
52		}
53	19	}
54
55
56		/**
57		* @param string $filename
58		* @throws NotFoundException
59		*/
60	20	public function load($filename)
61		{
62	20	$this->checkFileExists($filename);
63	19	$imageInfo = getimagesize($filename);
64	19	$this->imageType = $imageInfo[2];
65	19	$this->strategy = new $this->strategies[$this->imageType]();
66	19	$this->image = $this->strategy->create($filename);
67	19	}
68
69
70		/**
71		* @param string $filename
72		* @param int $compression
73		* @param string $permissions
74		*/
75	3	public function save($filename = null, $compression = 100, $permissions = null)
76		{
77	3	$filename = ($filename) ?: $this->fileName;
78	3	$this->strategy->save($this->image, $filename, $compression);
79	3	$this->setPermissions($filename, $permissions);
80	3	}
81
82		/**
83		* @param $filename
84		* @param $permissions
85		*/
86	3	private function setPermissions($filename, $permissions)
87		{
88	3	if ($permissions !== null) {
89	1	chmod($filename, (int) $permissions);
90		}
91	3	}
92
93
94		/**
95		* @param bool $return either output directly
96		* @return void\|string image contents
97		*/
98	14	public function output($return = false)
99		{
100	14	if ($return) {
101	14	ob_start();
102		}
103
104	14	$this->renderImage();
105
106	14	if ($return) {
107	14	$contents = ob_get_flush();
108	14	return $contents;
109		}
110		}
111
112	14	private function renderImage()
113		{
114	14	switch ($this->imageType) {
115	14	case IMAGETYPE_JPEG:
116	3	imagejpeg($this->image);
117	3	break;
118	11	case IMAGETYPE_GIF:
119	2	imagegif($this->image);
120	2	break;
121	9	case IMAGETYPE_PNG:
122	9	imagealphablending($this->image, true);
123	9	imagesavealpha($this->image, true);
124	9	imagepng($this->image);
125	9	break;
126		}
127	14	}
128
129		/**
130		* @return int
131		*/
132	8	public function getWidth()
133		{
134	8	return imagesx($this->image);
135		}
136
137		/**
138		* @return int
139		*/
140	8	public function getHeight()
141		{
142	8	return imagesy($this->image);
143		}
144
145		/**
146		* @param int $height
147		*/
148	2	public function resizeToHeight($height)
149		{
150	2	$ratio = $height / $this->getHeight();
151	2	$width = $this->getWidth() * $ratio;
152	2	$this->resize($width, $height);
153	2	}
154
155		/**
156		* @param int $width
157		*/
158	2	public function resizeToWidth($width)
159		{
160	2	$ratio = $width / $this->getWidth();
161	2	$height = $this->getHeight() * $ratio;
162	2	$this->resize($width, $height);
163	2	}
164
165		/**
166		* @param int $scale %
167		*/
168	1	public function scale($scale)
169		{
170	1	$width = $this->getWidth() * $scale / 100;
171	1	$height = $this->getHeight() * $scale / 100;
172	1	$this->resize($width, $height);
173	1	}
174
175		/**
176		* @param int $width
177		* @param int $height
178		*/
179	3	public function resizeAndCrop($width, $height)
180		{
181	3	$targetRatio = $width / $height;
182	3	$actualRatio = $this->getWidth() / $this->getHeight();
183
184	3	if ($targetRatio == $actualRatio) {
185		// Scale to size
186	1	$this->resize($width, $height);
187	2	} elseif ($targetRatio > $actualRatio) {
188		// Resize to width, crop extra height
189	1	$this->resizeToWidth($width);
190	1	$this->crop($width, $height);
191		} else {
192		// Resize to height, crop additional width
193	1	$this->resizeToHeight($height);
194	1	$this->crop($width, $height);
195		}
196	3	}
197
198
199		/**
200		* Now with added Transparency resizing feature
201		* @param int $width
202		* @param int $height
203		*/
204	6	public function resize($width, $height)
205		{
206	6	$newImage = imagecreatetruecolor($width, $height);
207
208	6	$this->handleTransparency($newImage);
209
210		// Now resample the image
211	6	imagecopyresampled($newImage, $this->image, 0, 0, 0, 0, $width, $height, $this->getWidth(), $this->getHeight());
212
213		// And allocate to $this
214	6	$this->image = $newImage;
215	6	}
216
217	6	private function handleTransparency($resource)
218		{
219	6	if ($this->getImageType() == IMAGETYPE_JPEG) {
220		return;
221		}
222
223		// Get transparency color's index number
224	6	$transparency = imagecolortransparent($this->image);
225
226		// Is a strange index other than -1 set?
227	6	if ($transparency >= 0) {
228
229		// deal with alpha channels
230		$this->prepWithExistingIndex($resource, $transparency);
231
232	6	} elseif ($this->getImageType() == IMAGETYPE_PNG) {
233
234		// deal with alpha channels
235	6	$this->prepTransparentPng($resource);
236		}
237
238	6	}
239
240		/**
241		* @param $resource
242		* @param $index
243		*/
244		private function prepWithExistingIndex($resource, $index)
245		{
246		// Get the array of RGB vals for the transparency index
247		$transparentColor = imagecolorsforindex($this->image, $index);
248
249		// Now allocate the color
250		$transparency = imagecolorallocate($resource, $transparentColor['red'], $transparentColor['green'], $transparentColor['blue']);
251
252		// Fill the background with the color
253		imagefill($resource, 0, 0, $transparency);
254
255		// And set that color as the transparent one
256		imagecolortransparent($resource, $transparency);
257		}
258
259		/**
260		* @param $resource
261		*/
262	6	private function prepTransparentPng($resource)
263		{
264		// Set blending mode as false
265	6	imagealphablending($resource, false);
266
267		// Tell it we want to save alpha channel info
268	6	imagesavealpha($resource, true);
269
270		// Set the transparent color
271	6	$color = imagecolorallocatealpha($resource, 0, 0, 0, 127);
272
273		// Fill the image with nothingness
274	6	imagefill($resource, 0, 0, $color);
275	6	}
276
277
278		/**
279		* @param int $width
280		* @param int $height
281		* @param string $trim
282		*/
283	3	public function crop($width, $height, $trim = 'center')
284		{
285	3	$offsetX = 0;
286	3	$offsetY = 0;
287	3	$currentWidth = $this->getWidth();
288	3	$currentHeight = $this->getHeight();
289
290	3	if ($trim != 'left') {
291	3	$offsetX = $this->getOffsetX($currentWidth, $width, $trim);
292	3	$offsetY = $this->getOffsetY($currentHeight, $height, $trim);
293		}
294
295	3	$newImage = imagecreatetruecolor($width, $height);
296	3	imagecopyresampled($newImage, $this->image, 0, 0, $offsetX, $offsetY, $width, $height, $width, $height);
297	3	$this->image = $newImage;
298	3	}
299
300		/**
301		* @param $currentWidth
302		* @param $width
303		* @param $trim
304		* @return float\|int
305		*/
306	3	private function getOffsetX($currentWidth, $width, $trim)
307		{
308	3	$offsetX = 0;
309	3	if ($currentWidth > $width) {
310	2	$diff = $currentWidth - $width;
311	2	$offsetX = ($trim == 'center') ? $diff / 2 : $diff; //full diff for trim right
312		}
313	3	return $offsetX;
314		}
315
316		/**
317		* @param $currentHeight
318		* @param $height
319		* @param $trim
320		* @return float\|int
321		*/
322	3	private function getOffsetY($currentHeight, $height, $trim)
323		{
324	3	$offsetY = 0;
325	3	if ($currentHeight > $height) {
326	2	$diff = $currentHeight - $height;
327	2	$offsetY = ($trim == 'center') ? $diff / 2 : $diff;
328		}
329	3	return $offsetY;
330		}
331
332		/**
333		* @return mixed
334		*/
335	6	public function getImageType()
336		{
337	6	return $this->imageType;
338		}
339
340		/**
341		* @return mixed
342		* @throws NothingLoadedException
343		*/
344	4	public function getHeader()
345		{
346	4	if (!$this->strategy) {
347	1	throw new NothingLoadedException();
348		}
349	3	return $this->strategy->getContentType();
350		}
351
352		/**
353		* Frees up memory
354		*/
355	1	public function destroy()
356		{
357	1	imagedestroy($this->image);
358	1	}
359		}
360

delboy1978uk / image

Push — master ( b2f7ca...a3ce9b )

Image::savePng() A

Complexity

Size

Duplication

Code Coverage

Importance

Duplication Side-by-Side

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