mambax7 /
extgallery
| Total Complexity | 70 |
| Total Lines | 561 |
| Duplicated Lines | 0 % |
| Changes | 1 | ||
| Bugs | 0 | Features | 0 |
Complex classes like Image_Transform_Driver_GD 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 Image_Transform_Driver_GD, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 65 | class Image_Transform_Driver_GD extends Image_Transform |
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| 66 | { |
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| 67 | /** |
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| 68 | * Holds the image resource for manipulation |
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| 69 | * |
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| 70 | * @var resource $imageHandle |
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| 71 | * @access protected |
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| 72 | */ |
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| 73 | public $imageHandle = null; |
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| 74 | /** |
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| 75 | * Holds the original image file |
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| 76 | * |
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| 77 | * @var resource $imageHandle |
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| 78 | * @access protected |
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| 79 | */ |
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| 80 | public $oldImage = null; |
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| 81 | |||
| 82 | /** |
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| 83 | * Check settings |
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| 84 | */ |
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| 85 | public function Image_Transform_Driver_GD() |
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| 86 | { |
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| 87 | $this->__construct(); |
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| 88 | } |
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| 89 | |||
| 90 | // End function Image |
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| 91 | |||
| 92 | /** |
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| 93 | * Check settings |
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| 94 | * |
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| 95 | * @since PHP 5 |
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| 96 | */ |
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| 97 | public function __construct() |
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| 98 | { |
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| 99 | if (!PEAR::loadExtension('gd')) { |
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| 100 | $this->isError(PEAR::raiseError('GD library is not available.', IMAGE_TRANSFORM_ERROR_UNSUPPORTED)); |
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|
Bug
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| 101 | } else { |
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| 102 | $types = imagetypes(); |
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| 103 | if ($types & IMG_PNG) { |
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| 104 | $this->_supported_image_types['png'] = 'rw'; |
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| 105 | } |
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| 106 | if (($types & IMG_GIF) |
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| 107 | || function_exists('imagegif')) { |
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| 108 | $this->_supported_image_types['gif'] = 'rw'; |
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| 109 | } elseif (function_exists('imagecreatefromgif')) { |
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| 110 | $this->_supported_image_types['gif'] = 'rw'; |
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| 111 | } |
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| 112 | if ($types & IMG_JPG) { |
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| 113 | $this->_supported_image_types['jpeg'] = 'rw'; |
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| 114 | } |
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| 115 | if ($types & IMG_WBMP) { |
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| 116 | $this->_supported_image_types['wbmp'] = 'rw'; |
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| 117 | } |
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| 118 | if (!$this->_supported_image_types) { |
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| 119 | $this->isError(PEAR::raiseError('No supported image types available', IMAGE_TRANSFORM_ERROR_UNSUPPORTED)); |
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| 120 | } |
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| 121 | } |
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| 122 | } |
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| 123 | |||
| 124 | // End function Image |
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| 125 | |||
| 126 | /** |
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| 127 | * Loads an image from file |
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| 128 | * |
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| 129 | * @param string $image filename |
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| 130 | * @return bool|PEAR_Error TRUE or a PEAR_Error object on error |
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| 131 | * @access public |
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| 132 | */ |
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| 133 | public function load($image) |
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| 134 | { |
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| 135 | $this->free(); |
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| 136 | |||
| 137 | $this->image = $image; |
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| 138 | $result = $this->_get_image_details($image); |
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| 139 | if (PEAR::isError($result)) { |
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| 140 | return $result; |
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| 141 | } |
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| 142 | if (!$this->supportsType($this->type, 'r')) { |
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| 143 | return PEAR::raiseError('Image type not supported for input', IMAGE_TRANSFORM_ERROR_UNSUPPORTED); |
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| 144 | } |
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| 145 | |||
| 146 | $functionName = 'ImageCreateFrom' . $this->type; |
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| 147 | $this->imageHandle = $functionName($this->image); |
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| 148 | if (!$this->imageHandle) { |
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| 149 | $this->imageHandle = null; |
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| 150 | |||
| 151 | return PEAR::raiseError('Error while loading image file.', IMAGE_TRANSFORM_ERROR_IO); |
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| 152 | } |
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| 153 | |||
| 154 | return true; |
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| 155 | } |
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| 156 | |||
| 157 | // End load |
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| 158 | |||
| 159 | /** |
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| 160 | * Returns the GD image handle |
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| 161 | * |
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| 162 | * @return resource |
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| 163 | * |
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| 164 | * @access public |
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| 165 | */ |
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| 166 | public function getHandle() |
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| 167 | { |
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| 168 | return $this->imageHandle; |
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| 169 | } |
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| 170 | |||
| 171 | //function getHandle() |
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| 172 | |||
| 173 | /** |
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| 174 | * Adds a border of constant width around an image |
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| 175 | * |
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| 176 | * @param int $border_width Width of border to add |
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| 177 | * @param string $color |
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| 178 | * @return bool TRUE |
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| 179 | * @author Peter Bowyer |
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| 180 | * @access public |
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| 181 | */ |
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| 182 | public function addBorder($border_width = null, $color = '') |
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| 183 | { |
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| 184 | $this->new_x = $this->img_x + 2 * $border_width; |
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| 185 | $this->new_y = $this->img_y + 2 * $border_width; |
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| 186 | |||
| 187 | $new_img = $this->_createImage($new_x, $new_y, $this->true_color); |
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| 188 | |||
| 189 | $options = ['pencilColor', $color]; |
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| 190 | $color = $this->_getColor('pencilColor', $options, [0, 0, 0]); |
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| 191 | if ($color) { |
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| 192 | if ($this->true_color) { |
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| 193 | $c = imagecolorresolve($this->imageHandle, $color[0], $color[1], $color[2]); |
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| 194 | imagefill($new_img, 0, 0, $c); |
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| 195 | } else { |
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| 196 | imagecolorset($new_img, imagecolorat($new_img, 0, 0), $color[0], $color[1], $color[2]); |
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| 197 | } |
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| 198 | } |
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| 199 | imagecopy($new_img, $this->imageHandle, $border_width, $border_width, 0, 0, $this->img_x, $this->img_y); |
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| 200 | $this->imageHandle = $new_img; |
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| 201 | $this->resized = true; |
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| 202 | |||
| 203 | return true; |
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| 204 | } |
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| 205 | |||
| 206 | /** |
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| 207 | * addText |
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| 208 | * |
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| 209 | * @param array $params Array contains options |
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| 210 | * array( |
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| 211 | * 'text' The string to draw |
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| 212 | * 'x' Horizontal position |
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| 213 | * 'y' Vertical Position |
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| 214 | * 'color' Font color |
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| 215 | * 'font' Font to be used |
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| 216 | * 'size' Size of the fonts in pixel |
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| 217 | * 'resize_first' Tell if the image has to be resized |
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| 218 | * before drawing the text |
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| 219 | * ) |
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| 220 | * |
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| 221 | * @return bool|PEAR_Error TRUE or a PEAR_Error object on error |
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| 222 | */ |
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| 223 | public function addText($params = null) |
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| 224 | { |
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| 225 | $this->oldImage = $this->imageHandle; |
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| 226 | $params = array_merge($this->_get_default_text_params(), $params); |
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| 227 | extract($params); |
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| 228 | |||
| 229 | $options = ['fontColor' => $color]; |
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| 230 | $color = $this->_getColor('fontColor', $options, [0, 0, 0]); |
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| 231 | |||
| 232 | $c = imagecolorresolve($this->imageHandle, $color[0], $color[1], $color[2]); |
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| 233 | |||
| 234 | if ('ttf' == mb_substr($font, -3)) { |
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| 235 | imagettftext($this->imageHandle, $size, $angle, $x, $y, $c, $font, $text); |
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| 236 | } else { |
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| 237 | imagepstext($this->imageHandle, $size, $angle, $x, $y, $c, $font, $text); |
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| 238 | } |
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| 239 | |||
| 240 | return true; |
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| 241 | } |
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| 242 | |||
| 243 | // End addText |
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| 244 | |||
| 245 | /** |
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| 246 | * Rotates image by the given angle |
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| 247 | * |
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| 248 | * Uses a fast rotation algorythm for custom angles |
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| 249 | * or lines copy for multiple of 90 degrees |
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| 250 | * |
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| 251 | * @param int $angle Rotation angle |
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| 252 | * @param array $options array( |
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| 253 | * 'canvasColor' => array(r ,g, b), named color or #rrggbb |
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| 254 | * ) |
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| 255 | * @return bool|PEAR_Error TRUE or a PEAR_Error object on error |
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| 256 | * @access public |
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| 257 | * @author Pierre-Alain Joye |
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| 258 | */ |
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| 259 | public function rotate($angle, $options = null) |
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| 260 | { |
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| 261 | if (0 == ($angle % 360)) { |
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| 262 | return true; |
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| 263 | } |
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| 264 | |||
| 265 | $color_mask = $this->_getColor('canvasColor', $options, [255, 255, 255]); |
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| 266 | |||
| 267 | $mask = imagecolorresolve($this->imageHandle, $color_mask[0], $color_mask[1], $color_mask[2]); |
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| 268 | |||
| 269 | $this->oldImage = $this->imageHandle; |
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| 270 | |||
| 271 | // Multiply by -1 to change the sign, so the image is rotated clockwise |
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| 272 | $this->imageHandle = imagerotate($this->imageHandle, $angle * -1, $mask); |
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| 273 | |||
| 274 | return true; |
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| 275 | } |
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| 276 | |||
| 277 | /** |
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| 278 | * Horizontal mirroring |
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| 279 | * |
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| 280 | * @return mixed TRUE or PEAR_Error object on error |
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| 281 | * @access public |
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| 282 | * @see flip() |
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| 283 | **/ |
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| 284 | public function mirror() |
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| 285 | { |
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| 286 | $new_img = $this->_createImage(); |
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| 287 | for ($x = 0; $x < $this->new_x; ++$x) { |
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| 288 | imagecopy($new_img, $this->imageHandle, $x, 0, $this->new_x - $x - 1, 0, 1, $this->new_y); |
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| 289 | } |
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| 290 | imagedestroy($this->imageHandle); |
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| 291 | $this->imageHandle = $new_img; |
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| 292 | |||
| 293 | return true; |
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| 294 | } |
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| 295 | |||
| 296 | /** |
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| 297 | * Vertical mirroring |
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| 298 | * |
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| 299 | * @return true or PEAR Error object on error |
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| 300 | * @access public |
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| 301 | * @see mirror() |
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| 302 | **/ |
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| 303 | public function flip() |
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| 304 | { |
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| 305 | $new_img = $this->_createImage(); |
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| 306 | for ($y = 0; $y < $this->new_y; ++$y) { |
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| 307 | imagecopy($new_img, $this->imageHandle, 0, $y, 0, $this->new_y - $y - 1, $this->new_x, 1); |
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| 308 | } |
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| 309 | imagedestroy($this->imageHandle); |
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| 310 | $this->imageHandle = $new_img; |
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| 311 | |||
| 312 | /* for very large images we may want to use the following |
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| 313 | Needs to find out what is the threshhold |
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| 314 | for ($x = 0; $x < $this->new_x; ++$x) { |
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| 315 | for ($y1 = 0; $y1 < $this->new_y / 2; ++$y1) { |
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| 316 | $y2 = $this->new_y - 1 - $y1; |
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| 317 | $color1 = imagecolorat($this->imageHandle, $x, $y1); |
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| 318 | $color2 = imagecolorat($this->imageHandle, $x, $y2); |
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| 319 | imagesetpixel($this->imageHandle, $x, $y1, $color2); |
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| 320 | imagesetpixel($this->imageHandle, $x, $y2, $color1); |
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| 321 | } |
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| 322 | } */ |
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| 323 | |||
| 324 | return true; |
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| 325 | } |
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| 326 | |||
| 327 | /** |
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| 328 | * Crops image by size and start coordinates |
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| 329 | * |
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| 330 | * @param mixed $width |
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| 331 | * @param mixed $height |
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| 332 | * @param mixed $x |
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| 333 | * @param mixed $y |
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| 334 | * @return bool|PEAR_Error TRUE or a PEAR_Error object on error |
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| 335 | * @access public |
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| 336 | */ |
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| 337 | public function crop($width, $height, $x = 0, $y = 0) |
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| 338 | { |
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| 339 | // Sanity check |
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| 340 | if (!$this->intersects($width, $height, $x, $y)) { |
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| 341 | return PEAR::raiseError('Nothing to crop', IMAGE_TRANSFORM_ERROR_OUTOFBOUND); |
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| 342 | } |
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| 343 | $x = min($this->new_x, max(0, $x)); |
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| 344 | $y = min($this->new_y, max(0, $y)); |
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| 345 | $width = min($width, $this->new_x - $x); |
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| 346 | $height = min($height, $this->new_y - $y); |
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| 347 | $new_img = $this->_createImage($width, $height); |
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| 348 | |||
| 349 | if (!imagecopy($new_img, $this->imageHandle, 0, 0, $x, $y, $width, $height)) { |
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| 350 | imagedestroy($new_img); |
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| 351 | |||
| 352 | return PEAR::raiseError('Failed transformation: crop()', IMAGE_TRANSFORM_ERROR_FAILED); |
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| 353 | } |
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| 354 | |||
| 355 | $this->oldImage = $this->imageHandle; |
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| 356 | $this->imageHandle = $new_img; |
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| 357 | $this->resized = true; |
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| 358 | |||
| 359 | $this->new_x = $width; |
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| 360 | $this->new_y = $height; |
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| 361 | |||
| 362 | return true; |
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| 363 | } |
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| 364 | |||
| 365 | /** |
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| 366 | * Converts the image to greyscale |
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| 367 | * |
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| 368 | * @return bool|PEAR_Error TRUE or a PEAR_Error object on error |
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| 369 | * @access public |
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| 370 | */ |
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| 371 | public function greyscale() |
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| 372 | { |
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| 373 | imagecopymergegray($this->imageHandle, $this->imageHandle, 0, 0, 0, 0, $this->new_x, $this->new_y, 0); |
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| 374 | |||
| 375 | return true; |
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| 376 | } |
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| 377 | |||
| 378 | /** |
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| 379 | * Resize Action |
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| 380 | * |
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| 381 | * For GD 2.01+ the new copyresampled function is used |
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| 382 | * It uses a bicubic interpolation algorithm to get far |
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| 383 | * better result. |
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| 384 | * |
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| 385 | * @param int $new_x New width |
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| 386 | * @param int $new_y New height |
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| 387 | * @param array $options Optional parameters |
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| 388 | * <ul> |
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| 389 | * <li>'scaleMethod': "pixel" or "smooth"</li> |
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| 390 | * </ul> |
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| 391 | * |
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| 392 | * @return bool|PEAR_Error TRUE on success or PEAR_Error object on error |
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| 393 | * @access protected |
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| 394 | */ |
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| 395 | public function _resize($new_x = null, $new_y = null, $options = null) |
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| 396 | { |
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| 397 | if (true === $this->resized) { |
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| 398 | return PEAR::raiseError('You have already resized the image without saving it. Your previous resizing will be overwritten', null, PEAR_ERROR_TRIGGER, E_USER_NOTICE); |
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| 399 | } |
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| 400 | |||
| 401 | if ($this->new_x == $new_x && $this->new_y == $new_y) { |
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| 402 | return true; |
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| 403 | } |
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| 404 | |||
| 405 | $scaleMethod = $this->_getOption('scaleMethod', $options, 'smooth'); |
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| 406 | |||
| 407 | // Make sure to get a true color image if doing resampled resizing |
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| 408 | // otherwise get the same type of image |
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| 409 | $trueColor = ('pixel' == $scaleMethod) ? null : true; |
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| 410 | $new_img = $this->_createImage($new_x, $new_y, $trueColor); |
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| 411 | |||
| 412 | $icr_res = null; |
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| 413 | if ('pixel' != $scaleMethod && function_exists('ImageCopyResampled')) { |
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| 414 | $icr_res = imagecopyresampled($new_img, $this->imageHandle, 0, 0, 0, 0, $new_x, $new_y, $this->img_x, $this->img_y); |
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| 415 | } |
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| 416 | if (!$icr_res) { |
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| 417 | imagecopyresized($new_img, $this->imageHandle, 0, 0, 0, 0, $new_x, $new_y, $this->img_x, $this->img_y); |
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| 418 | } |
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| 419 | $this->oldImage = $this->imageHandle; |
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| 420 | $this->imageHandle = $new_img; |
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| 421 | $this->resized = true; |
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| 422 | |||
| 423 | $this->new_x = $new_x; |
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| 424 | $this->new_y = $new_y; |
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| 425 | |||
| 426 | return true; |
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| 427 | } |
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| 428 | |||
| 429 | /** |
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| 430 | * Adjusts the image gamma |
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| 431 | * |
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| 432 | * @param float $outputgamma |
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| 433 | * |
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| 434 | * @return bool|PEAR_Error TRUE or a PEAR_Error object on error |
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| 435 | * @access public |
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| 436 | */ |
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| 437 | public function gamma($outputgamma = 1.0) |
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| 438 | { |
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| 439 | if (1.0 != $outputgamma) { |
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| 440 | imagegammacorrect($this->imageHandle, 1.0, $outputgamma); |
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| 441 | } |
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| 442 | |||
| 443 | return true; |
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| 444 | } |
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| 445 | |||
| 446 | /** |
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| 447 | * Helper method to save to a file or output the image |
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| 448 | * |
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| 449 | * @param string $filename the name of the file to write to (blank to output) |
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| 450 | * @param string $type |
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| 451 | * @param int $quality output DPI, default is 75 |
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| 452 | * |
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| 453 | * @return bool|PEAR_Error TRUE on success or PEAR_Error object on error |
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| 454 | * @access protected |
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| 455 | */ |
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| 456 | public function _generate($filename, $type = '', $quality = null) |
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| 457 | { |
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| 458 | $type = mb_strtolower(('' == $type) ? $this->type : $type); |
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| 459 | $options = is_array($quality) ? $quality : []; |
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| 460 | switch ($type) { |
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| 461 | case 'jpg': |
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| 462 | $type = 'jpeg'; |
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| 463 | // no break |
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| 464 | case 'jpeg': |
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| 465 | if (is_numeric($quality)) { |
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| 466 | $options['quality'] = $quality; |
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| 467 | } |
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| 468 | $quality = $this->_getOption('quality', $options, 75); |
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| 469 | break; |
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| 470 | } |
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| 471 | if (!$this->supportsType($type, 'w')) { |
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| 472 | return PEAR::raiseError('Image type not supported for output', IMAGE_TRANSFORM_ERROR_UNSUPPORTED); |
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| 473 | } |
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| 474 | |||
| 475 | if ('' == $filename) { |
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| 476 | header('Content-type: ' . $this->getMimeType($type)); |
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| 477 | $action = 'output image'; |
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| 478 | } else { |
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| 479 | $action = 'save image to file'; |
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| 480 | } |
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| 481 | |||
| 482 | $functionName = 'image' . $type; |
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| 483 | switch ($type) { |
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| 484 | case 'jpeg': |
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| 485 | $result = $functionName($this->imageHandle, $filename, $quality); |
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| 486 | break; |
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| 487 | default: |
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| 488 | if ('' == $filename) { |
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| 489 | $result = $functionName($this->imageHandle); |
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| 490 | } else { |
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| 491 | $result = $functionName($this->imageHandle, $filename); |
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| 492 | } |
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| 493 | } |
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| 494 | if (!$result) { |
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| 495 | return PEAR::raiseError('Couldn\'t ' . $action, IMAGE_TRANSFORM_ERROR_IO); |
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| 496 | } |
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| 497 | $this->imageHandle = $this->oldImage; |
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| 498 | if (!$this->keep_settings_on_save) { |
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| 499 | $this->free(); |
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| 500 | } |
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| 501 | |||
| 502 | return true; |
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| 503 | } |
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| 504 | |||
| 505 | // End save |
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| 506 | |||
| 507 | /** |
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| 508 | * Displays image without saving and lose changes. |
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| 509 | * |
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| 510 | * This method adds the Content-type HTTP header |
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| 511 | * |
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| 512 | * @param string $type (JPEG, PNG...); |
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| 513 | * @param int $quality 75 |
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| 514 | * |
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| 515 | * @return bool|PEAR_Error TRUE or PEAR_Error object on error |
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| 516 | * @access public |
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| 517 | */ |
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| 518 | public function display($type = '', $quality = null) |
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| 519 | { |
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| 520 | return $this->_generate('', $type, $quality); |
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| 521 | } |
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| 522 | |||
| 523 | /** |
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| 524 | * Saves the image to a file |
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| 525 | * |
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| 526 | * @param string $filename the name of the file to write to |
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| 527 | * @param string $type the output format, default |
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| 528 | * is the current used format |
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| 529 | * @param int $quality default is 75 |
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| 530 | * |
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| 531 | * @return bool|PEAR_Error TRUE on success or PEAR_Error object on error |
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| 532 | * @access public |
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| 533 | */ |
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| 534 | public function save($filename, $type = '', $quality = null) |
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| 535 | { |
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| 536 | if (!trim($filename)) { |
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| 537 | return PEAR::raiseError('Filename missing', IMAGE_TRANSFORM_ERROR_ARGUMENT); |
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| 538 | } |
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| 539 | |||
| 540 | return $this->_generate($filename, $type, $quality); |
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| 541 | } |
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| 542 | |||
| 543 | /** |
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| 544 | * Destroys image handle |
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| 545 | * |
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| 546 | * @access public |
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| 547 | */ |
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| 548 | public function free() |
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| 559 | } |
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| 560 | |||
| 561 | /** |
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| 562 | * Returns a new image for temporary processing |
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| 563 | * |
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| 564 | * @param int $width width of the new image |
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| 565 | * @param int $height height of the new image |
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| 566 | * @param bool $trueColor force which type of image to create |
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| 567 | * @return resource a GD image resource |
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| 568 | * @access protected |
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| 569 | */ |
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| 570 | public function _createImage($width = -1, $height = -1, $trueColor = null) |
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| 626 | } |
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| 627 | } |
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| 628 |
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