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1<?php
2/**
3 * This file is part of PHPPresentation - A pure PHP library for reading and writing
4 * presentations documents.
5 *
6 * PHPPresentation is free software distributed under the terms of the GNU Lesser
7 * General Public License version 3 as published by the Free Software Foundation.
8 *
9 * For the full copyright and license information, please read the LICENSE
10 * file that was distributed with this source code. For the full list of
11 * contributors, visit https://github.com/PHPOffice/PHPPresentation/contributors.
12 *
13 * @see        https://github.com/PHPOffice/PHPPresentation
14 *
15 * @license     http://www.gnu.org/licenses/lgpl.txt LGPL version 3
16 */
17
18declare(strict_types=1);
19
20namespace PhpOffice\PhpPresentation\Shape\Drawing;
21
22class Gd extends AbstractDrawingAdapter
23{
24    // Rendering functions
25    public const RENDERING_DEFAULT = 'imagepng';
26    public const RENDERING_PNG = 'imagepng';
27    public const RENDERING_GIF = 'imagegif';
28    public const RENDERING_JPEG = 'imagejpeg';
29
30    // MIME types
31    public const MIMETYPE_DEFAULT = 'image/png';
32    public const MIMETYPE_PNG = 'image/png';
33    public const MIMETYPE_GIF = 'image/gif';
34    public const MIMETYPE_JPEG = 'image/jpeg';
35
36    /**
37     * Image resource.
38     *
39     * @var resource
40     */
41    protected $imageResource;
42
43    /**
44     * Rendering function.
45     *
46     * @var string
47     */
48    protected $renderingFunction = self::RENDERING_DEFAULT;
49
50    /**
51     * Mime type.
52     *
53     * @var string
54     */
55    protected $mimeType = self::MIMETYPE_DEFAULT;
56
57    /**
58     * Unique name.
59     *
60     * @var string
61     */
62    protected $uniqueName;
63
64    /**
65     * Gd constructor.
66     */
67    public function __construct()
68    {
69        parent::__construct();
70        $this->uniqueName = md5(mt_rand(0, 9999) . time() . mt_rand(0, 9999));
71    }
72
73    /**
74     * Get image resource.
75     *
76     * @return resource
77     */
78    public function getImageResource()
79    {
80        return $this->imageResource;
81    }
82
83    /**
84     * Set image resource.
85     *
86     * @param resource $value
87     *
88     * @return $this
89     */
90    public function setImageResource($value = null)
91    {
92        $this->imageResource = $value;
93
94        if (null !== $this->imageResource) {
95            // Get width/height
96            $this->width = imagesx($this->imageResource);
97            $this->height = imagesy($this->imageResource);
98        }
99
100        return $this;
101    }
102
103    /**
104     * Get rendering function.
105     *
106     * @return string
107     */
108    public function getRenderingFunction()
109    {
110        return $this->renderingFunction;
111    }
112
113    /**
114     * Set rendering function.
115     *
116     * @param string $value
117     *
118     * @return $this
119     */
120    public function setRenderingFunction($value = self::RENDERING_DEFAULT)
121    {
122        $this->renderingFunction = $value;
123
124        return $this;
125    }
126
127    /**
128     * Get mime type.
129     */
130    public function getMimeType(): string
131    {
132        return $this->mimeType;
133    }
134
135    /**
136     * Set mime type.
137     *
138     * @param string $value
139     *
140     * @return $this
141     */
142    public function setMimeType($value = self::MIMETYPE_DEFAULT)
143    {
144        $this->mimeType = $value;
145
146        return $this;
147    }
148
149    public function getContents(): string
150    {
151        ob_start();
152        if (self::MIMETYPE_DEFAULT === $this->getMimeType()) {
153            imagealphablending($this->getImageResource(), false);
154            imagesavealpha($this->getImageResource(), true);
155        }
156        call_user_func($this->getRenderingFunction(), $this->getImageResource());
157        $imageContents = ob_get_contents();
158        ob_end_clean();
159
160        return $imageContents;
161    }
162
163    public function getExtension(): string
164    {
165        $extension = strtolower($this->getMimeType());
166        $extension = explode('/', $extension);
167        $extension = $extension[1];
168
169        return $extension;
170    }
171
172    public function getIndexedFilename(): string
173    {
174        return $this->uniqueName . $this->getImageIndex() . '.' . $this->getExtension();
175    }
176
177    /**
178     * @var string
179     */
180    protected $path;
181
182    /**
183     * Get Path.
184     */
185    public function getPath(): string
186    {
187        return $this->path;
188    }
189
190    public function setPath(string $path): self
191    {
192        $this->path = $path;
193
194        return $this;
195    }
196}