redCOMPONENT-COM /
redCORE
| Total Complexity | 113 |
| Total Lines | 1190 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like JImage often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use JImage, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 17 | class JImage |
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| 18 | { |
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| 19 | /** |
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| 20 | * @const integer |
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| 21 | * @since 11.3 |
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| 22 | */ |
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| 23 | const SCALE_FILL = 1; |
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| 24 | |||
| 25 | /** |
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| 26 | * @const integer |
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| 27 | * @since 11.3 |
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| 28 | */ |
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| 29 | const SCALE_INSIDE = 2; |
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| 30 | |||
| 31 | /** |
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| 32 | * @const integer |
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| 33 | * @since 11.3 |
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| 34 | */ |
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| 35 | const SCALE_OUTSIDE = 3; |
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| 36 | |||
| 37 | /** |
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| 38 | * @const integer |
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| 39 | * @since 12.2 |
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| 40 | */ |
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| 41 | const CROP = 4; |
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| 42 | |||
| 43 | /** |
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| 44 | * @const integer |
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| 45 | * @since 12.3 |
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| 46 | */ |
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| 47 | const CROP_RESIZE = 5; |
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| 48 | |||
| 49 | /** |
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| 50 | * @const integer |
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| 51 | * @since 3.2 |
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| 52 | */ |
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| 53 | const SCALE_FIT = 6; |
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| 54 | |||
| 55 | /** |
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| 56 | * @const string |
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| 57 | * @since 3.4.2 |
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| 58 | */ |
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| 59 | const ORIENTATION_LANDSCAPE = 'landscape'; |
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| 60 | |||
| 61 | /** |
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| 62 | * @const string |
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| 63 | * @since 3.4.2 |
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| 64 | */ |
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| 65 | const ORIENTATION_PORTRAIT = 'portrait'; |
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| 66 | |||
| 67 | /** |
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| 68 | * @const string |
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| 69 | * @since 3.4.2 |
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| 70 | */ |
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| 71 | const ORIENTATION_SQUARE = 'square'; |
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| 72 | |||
| 73 | /** |
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| 74 | * @var resource The image resource handle. |
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| 75 | * @since 11.3 |
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| 76 | */ |
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| 77 | protected $handle; |
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| 78 | |||
| 79 | /** |
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| 80 | * @var string The source image path. |
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| 81 | * @since 11.3 |
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| 82 | */ |
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| 83 | protected $path = null; |
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| 84 | |||
| 85 | /** |
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| 86 | * @var array Whether or not different image formats are supported. |
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| 87 | * @since 11.3 |
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| 88 | */ |
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| 89 | protected static $formats = array(); |
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| 90 | |||
| 91 | /** |
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| 92 | * @var boolean True for best quality. False for speed |
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| 93 | * |
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| 94 | * @since 3.7.0 |
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| 95 | */ |
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| 96 | protected $generateBestQuality = true; |
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| 97 | |||
| 98 | /** |
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| 99 | * Class constructor. |
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| 100 | * |
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| 101 | * @param mixed $source Either a file path for a source image or a GD resource handler for an image. |
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| 102 | * |
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| 103 | * @since 11.3 |
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| 104 | * @throws RuntimeException |
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| 105 | */ |
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| 106 | public function __construct($source = null) |
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| 107 | { |
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| 108 | // Verify that GD support for PHP is available. |
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| 109 | if (!extension_loaded('gd')) |
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| 110 | { |
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| 111 | // @codeCoverageIgnoreStart |
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| 112 | JLog::add('The GD extension for PHP is not available.', JLog::ERROR); |
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| 113 | throw new RuntimeException('The GD extension for PHP is not available.'); |
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| 114 | |||
| 115 | // @codeCoverageIgnoreEnd |
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| 116 | } |
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| 117 | |||
| 118 | // Determine which image types are supported by GD, but only once. |
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| 119 | if (!isset(self::$formats[IMAGETYPE_JPEG])) |
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| 120 | { |
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| 121 | $info = gd_info(); |
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| 122 | self::$formats[IMAGETYPE_JPEG] = ($info['JPEG Support']) ? true : false; |
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| 123 | self::$formats[IMAGETYPE_PNG] = ($info['PNG Support']) ? true : false; |
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| 124 | self::$formats[IMAGETYPE_GIF] = ($info['GIF Read Support']) ? true : false; |
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| 125 | } |
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| 126 | |||
| 127 | // If the source input is a resource, set it as the image handle. |
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| 128 | if (is_resource($source) && (get_resource_type($source) == 'gd')) |
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| 129 | { |
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| 130 | $this->handle = &$source; |
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| 131 | } |
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| 132 | elseif (!empty($source) && is_string($source)) |
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| 133 | { |
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| 134 | // If the source input is not empty, assume it is a path and populate the image handle. |
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| 135 | $this->loadFile($source); |
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| 136 | } |
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| 137 | } |
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| 138 | |||
| 139 | /** |
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| 140 | * Method to return a properties object for an image given a filesystem path. |
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| 141 | * The result object has values for image width, height, type, attributes, bits, channels, mime type, file size and orientation. |
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| 142 | * |
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| 143 | * @param string $path The filesystem path to the image for which to get properties. |
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| 144 | * |
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| 145 | * @return stdClass |
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| 146 | * |
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| 147 | * @since 11.3 |
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| 148 | * |
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| 149 | * @throws InvalidArgumentException |
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| 150 | * @throws RuntimeException |
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| 151 | */ |
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| 152 | public static function getImageFileProperties($path) |
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| 153 | { |
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| 154 | // Make sure the file exists. |
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| 155 | if (!file_exists($path)) |
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| 156 | { |
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| 157 | throw new InvalidArgumentException('The image file does not exist.'); |
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| 158 | } |
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| 159 | |||
| 160 | // Get the image file information. |
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| 161 | $info = getimagesize($path); |
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| 162 | |||
| 163 | if (!$info) |
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| 164 | { |
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| 165 | // @codeCoverageIgnoreStart |
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| 166 | throw new RuntimeException('Unable to get properties for the image.'); |
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| 167 | |||
| 168 | // @codeCoverageIgnoreEnd |
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| 169 | } |
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| 170 | |||
| 171 | // Build the response object. |
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| 172 | $properties = (object) array( |
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| 173 | 'width' => $info[0], |
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| 174 | 'height' => $info[1], |
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| 175 | 'type' => $info[2], |
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| 176 | 'attributes' => $info[3], |
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| 177 | 'bits' => isset($info['bits']) ? $info['bits'] : null, |
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| 178 | 'channels' => isset($info['channels']) ? $info['channels'] : null, |
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| 179 | 'mime' => $info['mime'], |
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| 180 | 'filesize' => filesize($path), |
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| 181 | 'orientation' => self::getOrientationString((int) $info[0], (int) $info[1]), |
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| 182 | ); |
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| 183 | |||
| 184 | return $properties; |
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| 185 | } |
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| 186 | |||
| 187 | /** |
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| 188 | * Method to detect whether an image's orientation is landscape, portrait or square. |
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| 189 | * The orientation will be returned as a string. |
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| 190 | * |
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| 191 | * @return mixed Orientation string or null. |
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| 192 | * |
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| 193 | * @since 3.4.2 |
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| 194 | */ |
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| 195 | public function getOrientation() |
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| 196 | { |
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| 197 | if ($this->isLoaded()) |
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| 198 | { |
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| 199 | return self::getOrientationString($this->getWidth(), $this->getHeight()); |
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| 200 | } |
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| 201 | |||
| 202 | return; |
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| 203 | } |
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| 204 | |||
| 205 | /** |
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| 206 | * Compare width and height integers to determine image orientation. |
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| 207 | * |
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| 208 | * @param integer $width The width value to use for calculation |
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| 209 | * @param integer $height The height value to use for calculation |
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| 210 | * |
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| 211 | * @return string Orientation string |
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| 212 | * |
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| 213 | * @since 3.4.2 |
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| 214 | */ |
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| 215 | private static function getOrientationString($width, $height) |
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| 216 | { |
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| 217 | if ($width > $height) |
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| 218 | { |
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| 219 | return self::ORIENTATION_LANDSCAPE; |
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| 220 | } |
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| 221 | |||
| 222 | if ($width < $height) |
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| 223 | { |
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| 224 | return self::ORIENTATION_PORTRAIT; |
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| 225 | } |
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| 226 | |||
| 227 | return self::ORIENTATION_SQUARE; |
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| 228 | } |
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| 229 | |||
| 230 | /** |
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| 231 | * Method to generate thumbnails from the current image. It allows |
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| 232 | * creation by resizing or cropping the original image. |
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| 233 | * |
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| 234 | * @param mixed $thumbSizes String or array of strings. Example: $thumbSizes = array('150x75','250x150'); |
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| 235 | * @param integer $creationMethod 1-3 resize $scaleMethod | 4 create cropping | 5 resize then crop |
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| 236 | * |
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| 237 | * @return array returns the generated thumb in the results array |
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| 238 | * |
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| 239 | * @since 12.2 |
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| 240 | * @throws LogicException |
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| 241 | * @throws InvalidArgumentException |
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| 242 | */ |
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| 243 | public function generateThumbs($thumbSizes, $creationMethod = self::SCALE_INSIDE) |
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| 244 | { |
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| 245 | // Make sure the resource handle is valid. |
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| 246 | if (!$this->isLoaded()) |
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| 247 | { |
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| 248 | throw new LogicException('No valid image was loaded.'); |
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| 249 | } |
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| 250 | |||
| 251 | // Accept a single thumbsize string as parameter |
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| 252 | if (!is_array($thumbSizes)) |
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| 253 | { |
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| 254 | $thumbSizes = array($thumbSizes); |
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| 255 | } |
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| 256 | |||
| 257 | // Process thumbs |
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| 258 | $generated = array(); |
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| 259 | |||
| 260 | if (!empty($thumbSizes)) |
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| 261 | { |
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| 262 | foreach ($thumbSizes as $thumbSize) |
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| 263 | { |
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| 264 | // Desired thumbnail size |
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| 265 | $size = explode('x', strtolower($thumbSize)); |
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| 266 | |||
| 267 | if (count($size) != 2) |
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| 268 | { |
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| 269 | throw new InvalidArgumentException('Invalid thumb size received: ' . $thumbSize); |
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| 270 | } |
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| 271 | |||
| 272 | $thumbWidth = $size[0]; |
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| 273 | $thumbHeight = $size[1]; |
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| 274 | |||
| 275 | switch ($creationMethod) |
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| 276 | { |
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| 277 | // Case for self::CROP |
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| 278 | case 4: |
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| 279 | $thumb = $this->crop($thumbWidth, $thumbHeight, null, null, true); |
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| 280 | break; |
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| 281 | |||
| 282 | // Case for self::CROP_RESIZE |
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| 283 | case 5: |
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| 284 | $thumb = $this->cropResize($thumbWidth, $thumbHeight, true); |
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| 285 | break; |
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| 286 | |||
| 287 | default: |
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| 288 | $thumb = $this->resize($thumbWidth, $thumbHeight, true, $creationMethod); |
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| 289 | break; |
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| 290 | } |
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| 291 | |||
| 292 | // Store the thumb in the results array |
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| 293 | $generated[] = $thumb; |
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| 294 | } |
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| 295 | } |
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| 296 | |||
| 297 | return $generated; |
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| 298 | } |
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| 299 | |||
| 300 | /** |
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| 301 | * Method to create thumbnails from the current image and save them to disk. It allows creation by resizing |
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| 302 | * or cropping the original image. |
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| 303 | * |
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| 304 | * @param mixed $thumbSizes string or array of strings. Example: $thumbSizes = array('150x75','250x150'); |
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| 305 | * @param integer $creationMethod 1-3 resize $scaleMethod | 4 create cropping |
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| 306 | * @param string $thumbsFolder destination thumbs folder. null generates a thumbs folder in the image folder |
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| 307 | * |
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| 308 | * @return array An array of JImage objects with thumb paths. |
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| 309 | * |
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| 310 | * @since 12.2 |
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| 311 | * @throws LogicException |
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| 312 | * @throws InvalidArgumentException |
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| 313 | */ |
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| 314 | public function createThumbs($thumbSizes, $creationMethod = self::SCALE_INSIDE, $thumbsFolder = null) |
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| 315 | { |
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| 316 | // Make sure the resource handle is valid. |
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| 317 | if (!$this->isLoaded()) |
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| 318 | { |
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| 319 | throw new LogicException('No valid image was loaded.'); |
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| 320 | } |
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| 321 | |||
| 322 | // No thumbFolder set -> we will create a thumbs folder in the current image folder |
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| 323 | if (is_null($thumbsFolder)) |
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| 324 | { |
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| 325 | $thumbsFolder = dirname($this->getPath()) . '/thumbs'; |
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| 326 | } |
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| 327 | |||
| 328 | // Check destination |
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| 329 | if (!is_dir($thumbsFolder) && (!is_dir(dirname($thumbsFolder)) || !@mkdir($thumbsFolder))) |
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| 330 | { |
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| 331 | throw new InvalidArgumentException('Folder does not exist and cannot be created: ' . $thumbsFolder); |
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| 332 | } |
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| 333 | |||
| 334 | // Process thumbs |
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| 335 | $thumbsCreated = array(); |
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| 336 | |||
| 337 | if ($thumbs = $this->generateThumbs($thumbSizes, $creationMethod)) |
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| 338 | { |
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| 339 | // Parent image properties |
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| 340 | $imgProperties = self::getImageFileProperties($this->getPath()); |
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| 341 | |||
| 342 | foreach ($thumbs as $thumb) |
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| 343 | { |
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| 344 | // Get thumb properties |
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| 345 | $thumbWidth = $thumb->getWidth(); |
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| 346 | $thumbHeight = $thumb->getHeight(); |
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| 347 | |||
| 348 | // Generate thumb name |
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| 349 | $filename = pathinfo($this->getPath(), PATHINFO_FILENAME); |
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| 350 | $fileExtension = pathinfo($this->getPath(), PATHINFO_EXTENSION); |
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| 351 | $thumbFileName = $filename . '_' . $thumbWidth . 'x' . $thumbHeight . '.' . $fileExtension; |
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| 352 | |||
| 353 | // Save thumb file to disk |
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| 354 | $thumbFileName = $thumbsFolder . '/' . $thumbFileName; |
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| 355 | |||
| 356 | if ($thumb->toFile($thumbFileName, $imgProperties->type)) |
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| 357 | { |
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| 358 | // Return JImage object with thumb path to ease further manipulation |
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| 359 | $thumb->path = $thumbFileName; |
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| 360 | $thumbsCreated[] = $thumb; |
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| 361 | } |
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| 362 | } |
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| 363 | } |
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| 364 | |||
| 365 | return $thumbsCreated; |
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| 366 | } |
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| 367 | |||
| 368 | /** |
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| 369 | * Method to crop the current image. |
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| 370 | * |
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| 371 | * @param mixed $width The width of the image section to crop in pixels or a percentage. |
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| 372 | * @param mixed $height The height of the image section to crop in pixels or a percentage. |
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| 373 | * @param integer $left The number of pixels from the left to start cropping. |
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| 374 | * @param integer $top The number of pixels from the top to start cropping. |
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| 375 | * @param boolean $createNew If true the current image will be cloned, cropped and returned; else |
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| 376 | * the current image will be cropped and returned. |
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| 377 | * |
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| 378 | * @return JImage |
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| 379 | * |
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| 380 | * @since 11.3 |
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| 381 | * @throws LogicException |
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| 382 | */ |
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| 383 | public function crop($width, $height, $left = null, $top = null, $createNew = true) |
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| 384 | { |
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| 385 | // Make sure the resource handle is valid. |
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| 386 | if (!$this->isLoaded()) |
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| 387 | { |
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| 388 | throw new LogicException('No valid image was loaded.'); |
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| 389 | } |
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| 390 | |||
| 391 | // Sanitize width. |
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| 392 | $width = $this->sanitizeWidth($width, $height); |
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| 393 | |||
| 394 | // Sanitize height. |
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| 395 | $height = $this->sanitizeHeight($height, $width); |
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| 396 | |||
| 397 | // Autocrop offsets |
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| 398 | if (is_null($left)) |
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| 399 | { |
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| 400 | $left = round(($this->getWidth() - $width) / 2); |
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| 401 | } |
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| 402 | |||
| 403 | if (is_null($top)) |
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| 404 | { |
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| 405 | $top = round(($this->getHeight() - $height) / 2); |
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| 406 | } |
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| 407 | |||
| 408 | // Sanitize left. |
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| 409 | $left = $this->sanitizeOffset($left); |
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| 410 | |||
| 411 | // Sanitize top. |
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| 412 | $top = $this->sanitizeOffset($top); |
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| 413 | |||
| 414 | // Create the new truecolor image handle. |
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| 415 | $handle = imagecreatetruecolor($width, $height); |
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| 416 | |||
| 417 | // Allow transparency for the new image handle. |
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| 418 | imagealphablending($handle, false); |
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| 419 | imagesavealpha($handle, true); |
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| 420 | |||
| 421 | if ($this->isTransparent()) |
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| 422 | { |
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| 423 | // Get the transparent color values for the current image. |
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| 424 | $rgba = imageColorsForIndex($this->handle, imagecolortransparent($this->handle)); |
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| 425 | $color = imageColorAllocateAlpha($handle, $rgba['red'], $rgba['green'], $rgba['blue'], $rgba['alpha']); |
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| 426 | |||
| 427 | // Set the transparent color values for the new image. |
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| 428 | imagecolortransparent($handle, $color); |
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| 429 | imagefill($handle, 0, 0, $color); |
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| 430 | } |
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| 431 | |||
| 432 | if (!$this->generateBestQuality) |
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| 433 | { |
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| 434 | imagecopyresized($handle, $this->handle, 0, 0, $left, $top, $width, $height, $width, $height); |
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| 435 | } |
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| 436 | else |
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| 437 | { |
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| 438 | imagecopyresampled($handle, $this->handle, 0, 0, $left, $top, $width, $height, $width, $height); |
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| 439 | } |
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| 440 | |||
| 441 | // If we are cropping to a new image, create a new JImage object. |
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| 442 | if ($createNew) |
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| 443 | { |
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| 444 | // @codeCoverageIgnoreStart |
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| 445 | $new = new JImage($handle); |
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| 446 | |||
| 447 | return $new; |
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| 448 | |||
| 449 | // @codeCoverageIgnoreEnd |
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| 450 | } |
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| 451 | // Swap out the current handle for the new image handle. |
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| 452 | else |
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| 453 | { |
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| 454 | // Free the memory from the current handle |
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| 455 | $this->destroy(); |
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| 456 | |||
| 457 | $this->handle = $handle; |
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| 458 | |||
| 459 | return $this; |
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| 460 | } |
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| 461 | } |
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| 462 | |||
| 463 | /** |
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| 464 | * Method to apply a filter to the image by type. Two examples are: grayscale and sketchy. |
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| 465 | * |
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| 466 | * @param string $type The name of the image filter to apply. |
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| 467 | * @param array $options An array of options for the filter. |
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| 468 | * |
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| 469 | * @return JImage |
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| 470 | * |
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| 471 | * @since 11.3 |
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| 472 | * @see JImageFilter |
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| 473 | * @throws LogicException |
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| 474 | */ |
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| 475 | public function filter($type, array $options = array()) |
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| 476 | { |
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| 477 | // Make sure the resource handle is valid. |
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| 478 | if (!$this->isLoaded()) |
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| 479 | { |
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| 480 | throw new LogicException('No valid image was loaded.'); |
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| 481 | } |
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| 482 | |||
| 483 | // Get the image filter instance. |
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| 484 | $filter = $this->getFilterInstance($type); |
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| 485 | |||
| 486 | // Execute the image filter. |
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| 487 | $filter->execute($options); |
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| 488 | |||
| 489 | return $this; |
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| 490 | } |
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| 491 | |||
| 492 | /** |
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| 493 | * Method to get the height of the image in pixels. |
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| 494 | * |
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| 495 | * @return integer |
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| 496 | * |
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| 497 | * @since 11.3 |
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| 498 | * @throws LogicException |
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| 499 | */ |
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| 500 | public function getHeight() |
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| 501 | { |
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| 502 | // Make sure the resource handle is valid. |
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| 503 | if (!$this->isLoaded()) |
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| 504 | { |
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| 505 | throw new LogicException('No valid image was loaded.'); |
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| 506 | } |
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| 507 | |||
| 508 | return imagesy($this->handle); |
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| 509 | } |
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| 510 | |||
| 511 | /** |
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| 512 | * Method to get the width of the image in pixels. |
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| 513 | * |
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| 514 | * @return integer |
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| 515 | * |
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| 516 | * @since 11.3 |
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| 517 | * @throws LogicException |
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| 518 | */ |
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| 519 | public function getWidth() |
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| 520 | { |
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| 521 | // Make sure the resource handle is valid. |
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| 522 | if (!$this->isLoaded()) |
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| 523 | { |
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| 524 | throw new LogicException('No valid image was loaded.'); |
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| 525 | } |
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| 526 | |||
| 527 | return imagesx($this->handle); |
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| 528 | } |
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| 529 | |||
| 530 | /** |
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| 531 | * Method to return the path |
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| 532 | * |
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| 533 | * @return string |
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| 534 | * |
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| 535 | * @since 11.3 |
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| 536 | */ |
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| 537 | public function getPath() |
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| 538 | { |
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| 539 | return $this->path; |
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| 540 | } |
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| 541 | |||
| 542 | /** |
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| 543 | * Method to determine whether or not an image has been loaded into the object. |
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| 544 | * |
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| 545 | * @return boolean |
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| 546 | * |
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| 547 | * @since 11.3 |
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| 548 | */ |
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| 549 | public function isLoaded() |
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| 550 | { |
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| 551 | // Make sure the resource handle is valid. |
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| 552 | if (!is_resource($this->handle) || (get_resource_type($this->handle) != 'gd')) |
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| 553 | { |
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| 554 | return false; |
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| 555 | } |
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| 556 | |||
| 557 | return true; |
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| 558 | } |
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| 559 | |||
| 560 | /** |
||
| 561 | * Method to determine whether or not the image has transparency. |
||
| 562 | * |
||
| 563 | * @return boolean |
||
| 564 | * |
||
| 565 | * @since 11.3 |
||
| 566 | * @throws LogicException |
||
| 567 | */ |
||
| 568 | public function isTransparent() |
||
| 569 | { |
||
| 570 | // Make sure the resource handle is valid. |
||
| 571 | if (!$this->isLoaded()) |
||
| 572 | { |
||
| 573 | throw new LogicException('No valid image was loaded.'); |
||
| 574 | } |
||
| 575 | |||
| 576 | return imagecolortransparent($this->handle) >= 0; |
||
| 577 | } |
||
| 578 | |||
| 579 | /** |
||
| 580 | * Method to load a file into the JImage object as the resource. |
||
| 581 | * |
||
| 582 | * @param string $path The filesystem path to load as an image. |
||
| 583 | * |
||
| 584 | * @return void |
||
| 585 | * |
||
| 586 | * @since 11.3 |
||
| 587 | * @throws InvalidArgumentException |
||
| 588 | * @throws RuntimeException |
||
| 589 | */ |
||
| 590 | public function loadFile($path) |
||
| 591 | { |
||
| 592 | // Destroy the current image handle if it exists |
||
| 593 | $this->destroy(); |
||
| 594 | |||
| 595 | // Make sure the file exists. |
||
| 596 | if (!file_exists($path)) |
||
| 597 | { |
||
| 598 | throw new InvalidArgumentException('The image file does not exist.'); |
||
| 599 | } |
||
| 600 | |||
| 601 | // Get the image properties. |
||
| 602 | $properties = self::getImageFileProperties($path); |
||
| 603 | |||
| 604 | // Attempt to load the image based on the MIME-Type |
||
| 605 | switch ($properties->mime) |
||
| 606 | { |
||
| 607 | case 'image/gif': |
||
| 608 | // Make sure the image type is supported. |
||
| 609 | if (empty(self::$formats[IMAGETYPE_GIF])) |
||
| 610 | { |
||
| 611 | // @codeCoverageIgnoreStart |
||
| 612 | JLog::add('Attempting to load an image of unsupported type GIF.', JLog::ERROR); |
||
| 613 | throw new RuntimeException('Attempting to load an image of unsupported type GIF.'); |
||
| 614 | |||
| 615 | // @codeCoverageIgnoreEnd |
||
| 616 | } |
||
| 617 | |||
| 618 | // Attempt to create the image handle. |
||
| 619 | $handle = imagecreatefromgif($path); |
||
| 620 | |||
| 621 | if (!is_resource($handle)) |
||
| 622 | { |
||
| 623 | // @codeCoverageIgnoreStart |
||
| 624 | throw new RuntimeException('Unable to process GIF image.'); |
||
| 625 | |||
| 626 | // @codeCoverageIgnoreEnd |
||
| 627 | } |
||
| 628 | |||
| 629 | $this->handle = $handle; |
||
| 630 | break; |
||
| 631 | |||
| 632 | case 'image/jpeg': |
||
| 633 | // Make sure the image type is supported. |
||
| 634 | if (empty(self::$formats[IMAGETYPE_JPEG])) |
||
| 635 | { |
||
| 636 | // @codeCoverageIgnoreStart |
||
| 637 | JLog::add('Attempting to load an image of unsupported type JPG.', JLog::ERROR); |
||
| 638 | throw new RuntimeException('Attempting to load an image of unsupported type JPG.'); |
||
| 639 | |||
| 640 | // @codeCoverageIgnoreEnd |
||
| 641 | } |
||
| 642 | |||
| 643 | // Attempt to create the image handle. |
||
| 644 | $handle = imagecreatefromjpeg($path); |
||
| 645 | |||
| 646 | if (!is_resource($handle)) |
||
| 647 | { |
||
| 648 | // @codeCoverageIgnoreStart |
||
| 649 | throw new RuntimeException('Unable to process JPG image.'); |
||
| 650 | |||
| 651 | // @codeCoverageIgnoreEnd |
||
| 652 | } |
||
| 653 | |||
| 654 | $this->handle = $handle; |
||
| 655 | break; |
||
| 656 | |||
| 657 | case 'image/png': |
||
| 658 | // Make sure the image type is supported. |
||
| 659 | if (empty(self::$formats[IMAGETYPE_PNG])) |
||
| 660 | { |
||
| 661 | // @codeCoverageIgnoreStart |
||
| 662 | JLog::add('Attempting to load an image of unsupported type PNG.', JLog::ERROR); |
||
| 663 | throw new RuntimeException('Attempting to load an image of unsupported type PNG.'); |
||
| 664 | |||
| 665 | // @codeCoverageIgnoreEnd |
||
| 666 | } |
||
| 667 | |||
| 668 | // Attempt to create the image handle. |
||
| 669 | $handle = imagecreatefrompng($path); |
||
| 670 | |||
| 671 | if (!is_resource($handle)) |
||
| 672 | { |
||
| 673 | // @codeCoverageIgnoreStart |
||
| 674 | throw new RuntimeException('Unable to process PNG image.'); |
||
| 675 | |||
| 676 | // @codeCoverageIgnoreEnd |
||
| 677 | } |
||
| 678 | |||
| 679 | $this->handle = $handle; |
||
| 680 | |||
| 681 | break; |
||
| 682 | |||
| 683 | default: |
||
| 684 | JLog::add('Attempting to load an image of unsupported type: ' . $properties->mime, JLog::ERROR); |
||
| 685 | throw new InvalidArgumentException('Attempting to load an image of unsupported type: ' . $properties->mime); |
||
| 686 | break; |
||
| 687 | } |
||
| 688 | |||
| 689 | // Set the filesystem path to the source image. |
||
| 690 | $this->path = $path; |
||
| 691 | } |
||
| 692 | |||
| 693 | /** |
||
| 694 | * Method to resize the current image. |
||
| 695 | * |
||
| 696 | * @param mixed $width The width of the resized image in pixels or a percentage. |
||
| 697 | * @param mixed $height The height of the resized image in pixels or a percentage. |
||
| 698 | * @param boolean $createNew If true the current image will be cloned, resized and returned; else |
||
| 699 | * the current image will be resized and returned. |
||
| 700 | * @param integer $scaleMethod Which method to use for scaling |
||
| 701 | * |
||
| 702 | * @return JImage |
||
| 703 | * |
||
| 704 | * @since 11.3 |
||
| 705 | * @throws LogicException |
||
| 706 | */ |
||
| 707 | public function resize($width, $height, $createNew = true, $scaleMethod = self::SCALE_INSIDE) |
||
| 708 | { |
||
| 709 | // Make sure the resource handle is valid. |
||
| 710 | if (!$this->isLoaded()) |
||
| 711 | { |
||
| 712 | throw new LogicException('No valid image was loaded.'); |
||
| 713 | } |
||
| 714 | |||
| 715 | // Sanitize width. |
||
| 716 | $width = $this->sanitizeWidth($width, $height); |
||
| 717 | |||
| 718 | // Sanitize height. |
||
| 719 | $height = $this->sanitizeHeight($height, $width); |
||
| 720 | |||
| 721 | // Prepare the dimensions for the resize operation. |
||
| 722 | $dimensions = $this->prepareDimensions($width, $height, $scaleMethod); |
||
| 723 | |||
| 724 | // Instantiate offset. |
||
| 725 | $offset = new stdClass; |
||
| 726 | $offset->x = $offset->y = 0; |
||
| 727 | |||
| 728 | // Center image if needed and create the new truecolor image handle. |
||
| 729 | if ($scaleMethod == self::SCALE_FIT) |
||
| 730 | { |
||
| 731 | // Get the offsets |
||
| 732 | $offset->x = round(($width - $dimensions->width) / 2); |
||
| 733 | $offset->y = round(($height - $dimensions->height) / 2); |
||
| 734 | |||
| 735 | $handle = imagecreatetruecolor($width, $height); |
||
| 736 | |||
| 737 | // Make image transparent, otherwise cavas outside initial image would default to black |
||
| 738 | if (!$this->isTransparent()) |
||
| 739 | { |
||
| 740 | $transparency = imagecolorAllocateAlpha($this->handle, 0, 0, 0, 127); |
||
| 741 | imagecolorTransparent($this->handle, $transparency); |
||
| 742 | } |
||
| 743 | } |
||
| 744 | else |
||
| 745 | { |
||
| 746 | $handle = imagecreatetruecolor($dimensions->width, $dimensions->height); |
||
| 747 | } |
||
| 748 | |||
| 749 | // Allow transparency for the new image handle. |
||
| 750 | imagealphablending($handle, false); |
||
| 751 | imagesavealpha($handle, true); |
||
| 752 | |||
| 753 | if ($this->isTransparent()) |
||
| 754 | { |
||
| 755 | // Get the transparent color values for the current image. |
||
| 756 | $rgba = imageColorsForIndex($this->handle, imagecolortransparent($this->handle)); |
||
| 757 | $color = imageColorAllocateAlpha($handle, $rgba['red'], $rgba['green'], $rgba['blue'], $rgba['alpha']); |
||
| 758 | |||
| 759 | // Set the transparent color values for the new image. |
||
| 760 | imagecolortransparent($handle, $color); |
||
| 761 | imagefill($handle, 0, 0, $color); |
||
| 762 | } |
||
| 763 | |||
| 764 | if (!$this->generateBestQuality) |
||
| 765 | { |
||
| 766 | imagecopyresized( |
||
| 767 | $handle, |
||
| 768 | $this->handle, |
||
| 769 | $offset->x, |
||
| 770 | $offset->y, |
||
| 771 | 0, |
||
| 772 | 0, |
||
| 773 | $dimensions->width, |
||
| 774 | $dimensions->height, |
||
| 775 | $this->getWidth(), |
||
| 776 | $this->getHeight() |
||
| 777 | ); |
||
| 778 | } |
||
| 779 | else |
||
| 780 | { |
||
| 781 | imagecopyresampled( |
||
| 782 | $handle, |
||
| 783 | $this->handle, |
||
| 784 | $offset->x, |
||
| 785 | $offset->y, |
||
| 786 | 0, |
||
| 787 | 0, |
||
| 788 | $dimensions->width, |
||
| 789 | $dimensions->height, |
||
| 790 | $this->getWidth(), |
||
| 791 | $this->getHeight() |
||
| 792 | ); |
||
| 793 | } |
||
| 794 | |||
| 795 | // If we are resizing to a new image, create a new JImage object. |
||
| 796 | if ($createNew) |
||
| 797 | { |
||
| 798 | // @codeCoverageIgnoreStart |
||
| 799 | $new = new JImage($handle); |
||
| 800 | |||
| 801 | return $new; |
||
| 802 | |||
| 803 | // @codeCoverageIgnoreEnd |
||
| 804 | } |
||
| 805 | // Swap out the current handle for the new image handle. |
||
| 806 | else |
||
| 807 | { |
||
| 808 | // Free the memory from the current handle |
||
| 809 | $this->destroy(); |
||
| 810 | |||
| 811 | $this->handle = $handle; |
||
| 812 | |||
| 813 | return $this; |
||
| 814 | } |
||
| 815 | } |
||
| 816 | |||
| 817 | /** |
||
| 818 | * Method to crop an image after resizing it to maintain |
||
| 819 | * proportions without having to do all the set up work. |
||
| 820 | * |
||
| 821 | * @param integer $width The desired width of the image in pixels or a percentage. |
||
| 822 | * @param integer $height The desired height of the image in pixels or a percentage. |
||
| 823 | * @param boolean $createNew If true the current image will be cloned, resized, cropped and returned. |
||
| 824 | * |
||
| 825 | * @return object JImage Object for chaining. |
||
| 826 | * |
||
| 827 | * @since 12.3 |
||
| 828 | */ |
||
| 829 | public function cropResize($width, $height, $createNew = true) |
||
| 830 | { |
||
| 831 | $width = $this->sanitizeWidth($width, $height); |
||
| 832 | $height = $this->sanitizeHeight($height, $width); |
||
| 833 | |||
| 834 | $resizewidth = $width; |
||
| 835 | $resizeheight = $height; |
||
| 836 | |||
| 837 | if (($this->getWidth() / $width) < ($this->getHeight() / $height)) |
||
| 838 | { |
||
| 839 | $resizeheight = 0; |
||
| 840 | } |
||
| 841 | else |
||
| 842 | { |
||
| 843 | $resizewidth = 0; |
||
| 844 | } |
||
| 845 | |||
| 846 | return $this->resize($resizewidth, $resizeheight, $createNew)->crop($width, $height, null, null, false); |
||
| 847 | } |
||
| 848 | |||
| 849 | /** |
||
| 850 | * Method to rotate the current image. |
||
| 851 | * |
||
| 852 | * @param mixed $angle The angle of rotation for the image |
||
| 853 | * @param integer $background The background color to use when areas are added due to rotation |
||
| 854 | * @param boolean $createNew If true the current image will be cloned, rotated and returned; else |
||
| 855 | * the current image will be rotated and returned. |
||
| 856 | * |
||
| 857 | * @return JImage |
||
| 858 | * |
||
| 859 | * @since 11.3 |
||
| 860 | * @throws LogicException |
||
| 861 | */ |
||
| 862 | public function rotate($angle, $background = -1, $createNew = true) |
||
| 863 | { |
||
| 864 | // Make sure the resource handle is valid. |
||
| 865 | if (!$this->isLoaded()) |
||
| 866 | { |
||
| 867 | throw new LogicException('No valid image was loaded.'); |
||
| 868 | } |
||
| 869 | |||
| 870 | // Sanitize input |
||
| 871 | $angle = (float) $angle; |
||
| 872 | |||
| 873 | // Create the new truecolor image handle. |
||
| 874 | $handle = imagecreatetruecolor($this->getWidth(), $this->getHeight()); |
||
| 875 | |||
| 876 | // Make background transparent if no external background color is provided. |
||
| 877 | if ($background == -1) |
||
| 878 | { |
||
| 879 | // Allow transparency for the new image handle. |
||
| 880 | imagealphablending($handle, false); |
||
| 881 | imagesavealpha($handle, true); |
||
| 882 | |||
| 883 | $background = imagecolorallocatealpha($handle, 0, 0, 0, 127); |
||
| 884 | } |
||
| 885 | |||
| 886 | // Copy the image |
||
| 887 | imagecopy($handle, $this->handle, 0, 0, 0, 0, $this->getWidth(), $this->getHeight()); |
||
| 888 | |||
| 889 | // Rotate the image |
||
| 890 | $handle = imagerotate($handle, $angle, $background); |
||
| 891 | |||
| 892 | // If we are resizing to a new image, create a new JImage object. |
||
| 893 | if ($createNew) |
||
| 894 | { |
||
| 895 | // @codeCoverageIgnoreStart |
||
| 896 | $new = new JImage($handle); |
||
| 897 | |||
| 898 | return $new; |
||
| 899 | |||
| 900 | // @codeCoverageIgnoreEnd |
||
| 901 | } |
||
| 902 | // Swap out the current handle for the new image handle. |
||
| 903 | else |
||
| 904 | { |
||
| 905 | // Free the memory from the current handle |
||
| 906 | $this->destroy(); |
||
| 907 | |||
| 908 | $this->handle = $handle; |
||
| 909 | |||
| 910 | return $this; |
||
| 911 | } |
||
| 912 | } |
||
| 913 | |||
| 914 | /** |
||
| 915 | * Method to flip the current image. |
||
| 916 | * |
||
| 917 | * @param integer $mode The flip mode for flipping the image {@link https://secure.php.net/imageflip#refsect1-function.imageflip-parameters} |
||
| 918 | * @param boolean $createNew If true the current image will be cloned, flipped and returned; else the current image will be flipped and returned. |
||
| 919 | * |
||
| 920 | * @return JImage |
||
| 921 | * |
||
| 922 | * @since 11.3 |
||
| 923 | * @throws LogicException |
||
| 924 | */ |
||
| 925 | public function flip($mode, $createNew = true) |
||
| 926 | { |
||
| 927 | // Make sure the resource handle is valid. |
||
| 928 | if (!$this->isLoaded()) |
||
| 929 | { |
||
| 930 | throw new LogicException('No valid image was loaded.'); |
||
| 931 | } |
||
| 932 | |||
| 933 | // Create the new truecolor image handle. |
||
| 934 | $handle = imagecreatetruecolor($this->getWidth(), $this->getHeight()); |
||
| 935 | |||
| 936 | // Copy the image |
||
| 937 | imagecopy($handle, $this->handle, 0, 0, 0, 0, $this->getWidth(), $this->getHeight()); |
||
| 938 | |||
| 939 | // Flip the image |
||
| 940 | if (!imageflip($handle, $mode)) |
||
| 941 | { |
||
| 942 | throw new LogicException('Unable to flip the image.'); |
||
| 943 | } |
||
| 944 | |||
| 945 | // If we are resizing to a new image, create a new JImage object. |
||
| 946 | if ($createNew) |
||
| 947 | { |
||
| 948 | // @codeCoverageIgnoreStart |
||
| 949 | $new = new JImage($handle); |
||
| 950 | |||
| 951 | return $new; |
||
| 952 | |||
| 953 | // @codeCoverageIgnoreEnd |
||
| 954 | } |
||
| 955 | |||
| 956 | // Free the memory from the current handle |
||
| 957 | $this->destroy(); |
||
| 958 | |||
| 959 | // Swap out the current handle for the new image handle. |
||
| 960 | $this->handle = $handle; |
||
| 961 | |||
| 962 | return $this; |
||
| 963 | } |
||
| 964 | |||
| 965 | /** |
||
| 966 | * Method to write the current image out to a file. |
||
| 967 | * |
||
| 968 | * @param string $path The filesystem path to save the image. |
||
| 969 | * @param integer $type The image type to save the file as. |
||
| 970 | * @param array $options The image type options to use in saving the file. |
||
| 971 | * |
||
| 972 | * @return boolean |
||
| 973 | * |
||
| 974 | * @see https://secure.php.net/manual/image.constants.php |
||
| 975 | * @since 11.3 |
||
| 976 | * @throws LogicException |
||
| 977 | */ |
||
| 978 | public function toFile($path, $type = IMAGETYPE_JPEG, array $options = array()) |
||
| 999 | } |
||
| 1000 | } |
||
| 1001 | |||
| 1002 | /** |
||
| 1003 | * Method to get an image filter instance of a specified type. |
||
| 1004 | * |
||
| 1005 | * @param string $type The image filter type to get. |
||
| 1006 | * |
||
| 1007 | * @return JImageFilter |
||
| 1008 | * |
||
| 1009 | * @since 11.3 |
||
| 1010 | * @throws RuntimeException |
||
| 1011 | */ |
||
| 1012 | protected function getFilterInstance($type) |
||
| 1013 | { |
||
| 1014 | // Sanitize the filter type. |
||
| 1015 | $type = strtolower(preg_replace('#[^A-Z0-9_]#i', '', $type)); |
||
| 1016 | |||
| 1017 | // Verify that the filter type exists. |
||
| 1018 | $className = 'JImageFilter' . ucfirst($type); |
||
| 1019 | |||
| 1020 | if (!class_exists($className)) |
||
| 1021 | { |
||
| 1022 | JLog::add('The ' . ucfirst($type) . ' image filter is not available.', JLog::ERROR); |
||
| 1023 | throw new RuntimeException('The ' . ucfirst($type) . ' image filter is not available.'); |
||
| 1024 | } |
||
| 1025 | |||
| 1026 | // Instantiate the filter object. |
||
| 1027 | $instance = new $className($this->handle); |
||
| 1028 | |||
| 1029 | // Verify that the filter type is valid. |
||
| 1030 | if (!($instance instanceof JImageFilter)) |
||
| 1031 | { |
||
| 1032 | // @codeCoverageIgnoreStart |
||
| 1033 | JLog::add('The ' . ucfirst($type) . ' image filter is not valid.', JLog::ERROR); |
||
| 1034 | throw new RuntimeException('The ' . ucfirst($type) . ' image filter is not valid.'); |
||
| 1035 | |||
| 1036 | // @codeCoverageIgnoreEnd |
||
| 1037 | } |
||
| 1038 | |||
| 1039 | return $instance; |
||
| 1040 | } |
||
| 1041 | |||
| 1042 | /** |
||
| 1043 | * Method to get the new dimensions for a resized image. |
||
| 1044 | * |
||
| 1045 | * @param integer $width The width of the resized image in pixels. |
||
| 1046 | * @param integer $height The height of the resized image in pixels. |
||
| 1047 | * @param integer $scaleMethod The method to use for scaling |
||
| 1048 | * |
||
| 1049 | * @return stdClass |
||
| 1050 | * |
||
| 1051 | * @since 11.3 |
||
| 1052 | * @throws InvalidArgumentException If width, height or both given as zero |
||
| 1053 | */ |
||
| 1054 | protected function prepareDimensions($width, $height, $scaleMethod) |
||
| 1055 | { |
||
| 1056 | // Instantiate variables. |
||
| 1057 | $dimensions = new stdClass; |
||
| 1058 | |||
| 1059 | switch ($scaleMethod) |
||
| 1060 | { |
||
| 1061 | case self::SCALE_FILL: |
||
| 1062 | $dimensions->width = (int) round($width); |
||
| 1063 | $dimensions->height = (int) round($height); |
||
| 1064 | break; |
||
| 1065 | |||
| 1066 | case self::SCALE_INSIDE: |
||
| 1067 | case self::SCALE_OUTSIDE: |
||
| 1068 | case self::SCALE_FIT: |
||
| 1069 | $rx = ($width > 0) ? ($this->getWidth() / $width) : 0; |
||
| 1070 | $ry = ($height > 0) ? ($this->getHeight() / $height) : 0; |
||
| 1071 | |||
| 1072 | if ($scaleMethod != self::SCALE_OUTSIDE) |
||
| 1073 | { |
||
| 1074 | $ratio = max($rx, $ry); |
||
| 1075 | } |
||
| 1076 | else |
||
| 1077 | { |
||
| 1078 | $ratio = min($rx, $ry); |
||
| 1079 | } |
||
| 1080 | |||
| 1081 | $dimensions->width = (int) round($this->getWidth() / $ratio); |
||
| 1082 | $dimensions->height = (int) round($this->getHeight() / $ratio); |
||
| 1083 | break; |
||
| 1084 | |||
| 1085 | default: |
||
| 1086 | throw new InvalidArgumentException('Invalid scale method.'); |
||
| 1087 | break; |
||
| 1088 | } |
||
| 1089 | |||
| 1090 | return $dimensions; |
||
| 1091 | } |
||
| 1092 | |||
| 1093 | /** |
||
| 1094 | * Method to sanitize a height value. |
||
| 1095 | * |
||
| 1096 | * @param mixed $height The input height value to sanitize. |
||
| 1097 | * @param mixed $width The input width value for reference. |
||
| 1098 | * |
||
| 1099 | * @return integer |
||
| 1100 | * |
||
| 1101 | * @since 11.3 |
||
| 1102 | */ |
||
| 1103 | protected function sanitizeHeight($height, $width) |
||
| 1104 | { |
||
| 1105 | // If no height was given we will assume it is a square and use the width. |
||
| 1106 | $height = ($height === null) ? $width : $height; |
||
| 1107 | |||
| 1108 | // If we were given a percentage, calculate the integer value. |
||
| 1109 | if (preg_match('/^[0-9]+(\.[0-9]+)?\%$/', $height)) |
||
| 1110 | { |
||
| 1111 | $height = (int) round($this->getHeight() * (float) str_replace('%', '', $height) / 100); |
||
| 1112 | } |
||
| 1113 | // Else do some rounding so we come out with a sane integer value. |
||
| 1114 | else |
||
| 1115 | { |
||
| 1116 | $height = (int) round((float) $height); |
||
| 1117 | } |
||
| 1118 | |||
| 1119 | return $height; |
||
| 1120 | } |
||
| 1121 | |||
| 1122 | /** |
||
| 1123 | * Method to sanitize an offset value like left or top. |
||
| 1124 | * |
||
| 1125 | * @param mixed $offset An offset value. |
||
| 1126 | * |
||
| 1127 | * @return integer |
||
| 1128 | * |
||
| 1129 | * @since 11.3 |
||
| 1130 | */ |
||
| 1131 | protected function sanitizeOffset($offset) |
||
| 1134 | } |
||
| 1135 | |||
| 1136 | /** |
||
| 1137 | * Method to sanitize a width value. |
||
| 1138 | * |
||
| 1139 | * @param mixed $width The input width value to sanitize. |
||
| 1140 | * @param mixed $height The input height value for reference. |
||
| 1141 | * |
||
| 1142 | * @return integer |
||
| 1143 | * |
||
| 1144 | * @since 11.3 |
||
| 1145 | */ |
||
| 1146 | protected function sanitizeWidth($width, $height) |
||
| 1147 | { |
||
| 1148 | // If no width was given we will assume it is a square and use the height. |
||
| 1149 | $width = ($width === null) ? $height : $width; |
||
| 1150 | |||
| 1151 | // If we were given a percentage, calculate the integer value. |
||
| 1152 | if (preg_match('/^[0-9]+(\.[0-9]+)?\%$/', $width)) |
||
| 1153 | { |
||
| 1154 | $width = (int) round($this->getWidth() * (float) str_replace('%', '', $width) / 100); |
||
| 1155 | } |
||
| 1156 | // Else do some rounding so we come out with a sane integer value. |
||
| 1157 | else |
||
| 1158 | { |
||
| 1159 | $width = (int) round((float) $width); |
||
| 1160 | } |
||
| 1161 | |||
| 1162 | return $width; |
||
| 1163 | } |
||
| 1164 | |||
| 1165 | /** |
||
| 1166 | * Method to destroy an image handle and |
||
| 1167 | * free the memory associated with the handle |
||
| 1168 | * |
||
| 1169 | * @return boolean True on success, false on failure or if no image is loaded |
||
| 1170 | * |
||
| 1171 | * @since 12.3 |
||
| 1172 | */ |
||
| 1173 | public function destroy() |
||
| 1181 | } |
||
| 1182 | |||
| 1183 | /** |
||
| 1184 | * Method to call the destroy() method one last time |
||
| 1185 | * to free any memory when the object is unset |
||
| 1186 | * |
||
| 1187 | * @see JImage::destroy() |
||
| 1188 | * @since 12.3 |
||
| 1189 | */ |
||
| 1190 | public function __destruct() |
||
| 1193 | } |
||
| 1194 | |||
| 1195 | /** |
||
| 1196 | * Method for set option of generate thumbnail method |
||
| 1197 | * |
||
| 1198 | * @param boolean $quality True for best quality. False for best speed. |
||
| 1199 | * |
||
| 1200 | * @return void |
||
| 1201 | * |
||
| 1202 | * @since 3.7.0 |
||
| 1203 | */ |
||
| 1204 | public function setThumbnailGenerate($quality = true) |
||
| 1207 | } |
||
| 1208 | } |
||
| 1209 |
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