mambax7 /
xoopseditors
| Total Complexity | 72 |
| Total Lines | 546 |
| 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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| 47 | Class Image_Transform_Driver_GD extends Image_Transform |
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| 48 | { |
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| 49 | /** |
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| 50 | * Holds the image file for manipulation |
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| 51 | */ |
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| 52 | var $imageHandle = ''; |
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| 53 | |||
| 54 | /** |
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| 55 | * Holds the original image file |
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| 56 | */ |
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| 57 | var $old_image = ''; |
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| 58 | |||
| 59 | /** |
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| 60 | * Check settings |
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| 61 | * |
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| 62 | * @return mixed true or or a PEAR error object on error |
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| 63 | * |
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| 64 | * @see PEAR::isError() |
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| 65 | */ |
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| 66 | function Image_Transform_GD() |
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| 67 | { |
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| 68 | return; |
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| 69 | } // End function Image |
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| 70 | |||
| 71 | /** |
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| 72 | * Load image |
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| 73 | * |
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| 74 | * @param string filename |
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| 75 | * |
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| 76 | * @return mixed none or a PEAR error object on error |
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| 77 | * @see PEAR::isError() |
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| 78 | */ |
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| 79 | function load($image) |
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| 80 | { |
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| 81 | $this->uid = md5($_SERVER['REMOTE_ADDR']); |
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| 82 | $this->image = $image; |
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| 83 | $this->_get_image_details($image); |
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| 84 | $functionName = 'ImageCreateFrom' . $this->type; |
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| 85 | |||
| 86 | if(function_exists($functionName)) |
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| 87 | { |
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| 88 | $this->imageHandle = $functionName($this->image); |
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| 89 | if ( $this->type == 'png') |
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| 90 | { |
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| 91 | imageAlphaBlending($this->imageHandle, false); |
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| 92 | imageSaveAlpha($this->imageHandle, true); |
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| 93 | } |
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| 94 | } |
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| 95 | } // End load |
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| 96 | |||
| 97 | /** |
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| 98 | * addText |
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| 99 | * |
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| 100 | * @param array options Array contains options |
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| 101 | * array( |
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| 102 | * 'text' The string to draw |
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| 103 | * 'x' Horizontal position |
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| 104 | * 'y' Vertical Position |
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| 105 | * 'Color' Font color |
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| 106 | * 'font' Font to be used |
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| 107 | * 'size' Size of the fonts in pixel |
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| 108 | * 'resize_first' Tell if the image has to be resized |
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| 109 | * before drawing the text |
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| 110 | * ) |
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| 111 | * |
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| 112 | * @return none |
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| 113 | * @see PEAR::isError() |
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| 114 | */ |
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| 115 | function addText($params) |
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| 116 | { |
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| 117 | $default_params = array( |
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| 118 | 'text' => 'This is Text', |
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| 119 | 'x' => 10, |
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| 120 | 'y' => 20, |
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| 121 | 'color' => array(255,0,0), |
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| 122 | 'font' => 'Arial.ttf', |
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| 123 | 'size' => '12', |
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| 124 | 'angle' => 0, |
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| 125 | 'resize_first' => false // Carry out the scaling of the image before annotation? Not used for GD |
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| 126 | ); |
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| 127 | $params = array_merge($default_params, $params); |
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| 128 | extract($params); |
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| 129 | |||
| 130 | if( !is_array($color) ){ |
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| 131 | if ($color[0]=='#'){ |
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| 132 | $this->colorhex2colorarray( $color ); |
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| 133 | } else { |
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| 134 | include_once('Image/Transform/Driver/ColorsDefs.php'); |
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| 135 | $color = isset($colornames[$color])?$colornames[$color]:false; |
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| 136 | } |
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| 137 | } |
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| 138 | |||
| 139 | $c = imagecolorresolve ($this->imageHandle, $color[0], $color[1], $color[2]); |
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| 140 | |||
| 141 | if ('ttf' == substr($font, -3)) { |
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| 142 | ImageTTFText($this->imageHandle, $size, $angle, $x, $y, $c, $font, $text); |
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| 143 | } else { |
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| 144 | ImagePSText($this->imageHandle, $size, $angle, $x, $y, $c, $font, $text); |
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| 145 | } |
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| 146 | return true; |
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| 147 | } // End addText |
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| 148 | |||
| 149 | |||
| 150 | /** |
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| 151 | * Rotate image by the given angle |
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| 152 | * Uses a fast rotation algorythm for custom angles |
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| 153 | * or lines copy for multiple of 90 degrees |
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| 154 | * |
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| 155 | * @param int $angle Rotation angle |
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| 156 | * @param array $options array( 'autoresize'=>true|false, |
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| 157 | * 'color_mask'=>array(r,g,b), named color or #rrggbb |
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| 158 | * ) |
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| 159 | * @author Pierre-Alain Joye |
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| 160 | * @return mixed none or a PEAR error object on error |
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| 161 | * @see PEAR::isError() |
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| 162 | */ |
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| 163 | function rotate($angle, $options=null) |
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| 164 | { |
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| 165 | if(function_exists('imagerotate')) { |
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| 166 | $white = imagecolorallocatealpha ($this->imageHandle, 255, 255, 255, 127); |
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| 167 | $this->imageHandle = imagerotate($this->imageHandle, $angle, $white); |
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| 168 | return true; |
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| 169 | } |
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| 170 | |||
| 171 | if ( $options==null ){ |
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| 172 | $autoresize = true; |
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| 173 | $color_mask = array(105,255,255); |
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| 174 | } else { |
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| 175 | extract( $options ); |
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| 176 | } |
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| 177 | |||
| 178 | while ($angle <= -45) { |
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| 179 | $angle += 360; |
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| 180 | } |
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| 181 | while ($angle > 270) { |
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| 182 | $angle -= 360; |
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| 183 | } |
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| 184 | |||
| 185 | $t = deg2rad($angle); |
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| 186 | |||
| 187 | if( !is_array($color_mask) ){ |
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| 188 | if ($color[0]=='#'){ |
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| 189 | $this->colorhex2colorarray( $color_mask ); |
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| 190 | } else { |
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| 191 | include_once('Image/Transform/Driver/ColorDefs.php'); |
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| 192 | $color = isset($colornames[$color_mask])?$colornames[$color_mask]:false; |
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| 193 | } |
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| 194 | } |
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| 195 | |||
| 196 | // Do not round it, too much lost of quality |
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| 197 | $cosT = cos($t); |
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| 198 | $sinT = sin($t); |
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| 199 | |||
| 200 | $img =& $this->imageHandle; |
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| 201 | |||
| 202 | $width = $max_x = $this->img_x; |
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| 203 | $height = $max_y = $this->img_y; |
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| 204 | $min_y = 0; |
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| 205 | $min_x = 0; |
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| 206 | |||
| 207 | $x1 = round($max_x/2,0); |
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| 208 | $y1 = round($max_y/2,0); |
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| 209 | |||
| 210 | if ( $autoresize ){ |
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| 211 | $t = abs($t); |
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| 212 | $a = round($angle,0); |
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| 213 | switch((int)($angle)){ |
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| 214 | case 0: |
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| 215 | $width2 = $width; |
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| 216 | $height2 = $height; |
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| 217 | break; |
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| 218 | case 90: |
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| 219 | $width2 = $height; |
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| 220 | $height2 = $width; |
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| 221 | break; |
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| 222 | case 180: |
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| 223 | $width2 = $width; |
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| 224 | $height2 = $height; |
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| 225 | break; |
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| 226 | case 270: |
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| 227 | $width2 = $height; |
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| 228 | $height2 = $width; |
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| 229 | break; |
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| 230 | default: |
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| 231 | $width2 = (int)(abs(sin($t) * $height + cos($t) * $width)); |
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| 232 | $height2 = (int)(abs(cos($t) * $height+sin($t) * $width)); |
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| 233 | } |
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| 234 | |||
| 235 | $width2 -= $width2%2; |
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| 236 | $height2 -= $height2%2; |
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| 237 | |||
| 238 | $d_width = abs($width - $width2); |
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| 239 | $d_height = abs($height - $height2); |
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| 240 | $x_offset = $d_width/2; |
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| 241 | $y_offset = $d_height/2; |
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| 242 | $min_x2 = -abs($x_offset); |
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| 243 | $min_y2 = -abs($y_offset); |
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| 244 | $max_x2 = $width2; |
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| 245 | $max_y2 = $height2; |
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| 246 | } |
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| 247 | |||
| 248 | $img2 = @$this->newImgPreserveAlpha( imagecreateTrueColor($width2,$height2) ); |
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| 249 | |||
| 250 | if ( !is_resource($img2) ){ |
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| 251 | return false;/*PEAR::raiseError('Cannot create buffer for the rotataion.', |
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| 252 | null, PEAR_ERROR_TRIGGER, E_USER_NOTICE);*/ |
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| 253 | } |
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| 254 | |||
| 255 | $this->img_x = $width2; |
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| 256 | $this->img_y = $height2; |
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| 257 | |||
| 258 | |||
| 259 | imagepalettecopy($img2,$img); |
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| 260 | |||
| 261 | $mask = imagecolorallocatealpha ($img2,$color_mask[0],$color_mask[1],$color_mask[2],127); |
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| 262 | // use simple lines copy for axes angles |
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| 263 | switch((int)($angle)){ |
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| 264 | case 0: |
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| 265 | imagefill ($img2, 0, 0,$mask); |
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| 266 | for ($y=0; $y < $max_y; $y++) { |
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| 267 | for ($x = $min_x; $x < $max_x; $x++){ |
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| 268 | $c = @imagecolorat ( $img, $x, $y); |
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| 269 | imagesetpixel($img2,$x+$x_offset,$y+$y_offset,$c); |
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| 270 | } |
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| 271 | } |
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| 272 | break; |
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| 273 | case 90: |
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| 274 | imagefill ($img2, 0, 0,$mask); |
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| 275 | for ($x = $min_x; $x < $max_x; $x++){ |
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| 276 | for ($y=$min_y; $y < $max_y; $y++) { |
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| 277 | $c = imagecolorat ( $img, $x, $y); |
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| 278 | imagesetpixel($img2,$max_y-$y-1,$x,$c); |
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| 279 | } |
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| 280 | } |
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| 281 | break; |
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| 282 | case 180: |
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| 283 | imagefill ($img2, 0, 0,$mask); |
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| 284 | for ($y=0; $y < $max_y; $y++) { |
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| 285 | for ($x = $min_x; $x < $max_x; $x++){ |
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| 286 | $c = @imagecolorat ( $img, $x, $y); |
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| 287 | imagesetpixel($img2, $max_x2-$x-1, $max_y2-$y-1, $c); |
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| 288 | } |
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| 289 | } |
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| 290 | break; |
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| 291 | case 270: |
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| 292 | imagefill ($img2, 0, 0,$mask); |
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| 293 | for ($y=0; $y < $max_y; $y++) { |
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| 294 | for ($x = $max_x; $x >= $min_x; $x--){ |
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| 295 | $c = @imagecolorat ( $img, $x, $y); |
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| 296 | imagesetpixel($img2,$y,$max_x-$x-1,$c); |
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| 297 | } |
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| 298 | } |
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| 299 | break; |
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| 300 | // simple reverse rotation algo |
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| 301 | default: |
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| 302 | $i=0; |
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| 303 | for ($y = $min_y2; $y < $max_y2; $y++){ |
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| 304 | |||
| 305 | // Algebra :) |
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| 306 | $x2 = round((($min_x2-$x1) * $cosT) + (($y-$y1) * $sinT + $x1),0); |
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| 307 | $y2 = round((($y-$y1) * $cosT - ($min_x2-$x1) * $sinT + $y1),0); |
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| 308 | |||
| 309 | for ($x = $min_x2; $x < $max_x2; $x++){ |
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| 310 | |||
| 311 | // Check if we are out of original bounces, if we are |
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| 312 | // use the default color mask |
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| 313 | if ( $x2>=0 && $x2<$max_x && $y2>=0 && $y2<$max_y ){ |
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| 314 | $c = imagecolorat ( $img, $x2, $y2); |
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| 315 | } else { |
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| 316 | $c = $mask; |
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| 317 | } |
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| 318 | imagesetpixel($img2,$x+$x_offset,$y+$y_offset,$c); |
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| 319 | |||
| 320 | // round verboten! |
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| 321 | $x2 += $cosT; |
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| 322 | $y2 -= $sinT; |
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| 323 | } |
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| 324 | } |
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| 325 | break; |
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| 326 | } |
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| 327 | $this->old_image = $this->imageHandle; |
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| 328 | $this->imageHandle = $img2; |
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| 329 | return true; |
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| 330 | } |
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| 331 | |||
| 332 | |||
| 333 | /** |
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| 334 | * Resize Action |
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| 335 | * |
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| 336 | * For GD 2.01+ the new copyresampled function is used |
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| 337 | * It uses a bicubic interpolation algorithm to get far |
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| 338 | * better result. |
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| 339 | * |
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| 340 | * @param int $new_x new width |
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| 341 | * @param int $new_y new height |
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| 342 | * |
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| 343 | * @return true on success or pear error |
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| 344 | * @see PEAR::isError() |
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| 345 | */ |
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| 346 | function _resize($new_x, $new_y) { |
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| 347 | if ($this->resized === true) { |
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| 348 | return false; /*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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| 349 | } |
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| 350 | if(function_exists('ImageCreateTrueColor')){ |
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| 351 | $new_img = $this->newImgPreserveAlpha( ImageCreateTrueColor($new_x,$new_y) ); |
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| 352 | } else { |
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| 353 | $new_img =ImageCreate($new_x,$new_y); |
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| 354 | } |
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| 355 | |||
| 356 | if(function_exists('ImageCopyResampled')){ |
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| 357 | ImageCopyResampled($new_img, $this->imageHandle, 0, 0, 0, 0, $new_x, $new_y, $this->img_x, $this->img_y); |
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| 358 | } else { |
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| 359 | ImageCopyResized($new_img, $this->imageHandle, 0, 0, 0, 0, $new_x, $new_y, $this->img_x, $this->img_y); |
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| 360 | } |
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| 361 | |||
| 362 | $this->old_image = $this->imageHandle; |
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| 363 | $this->imageHandle = $new_img; |
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| 364 | $this->resized = true; |
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| 365 | |||
| 366 | $this->new_x = $new_x; |
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| 367 | $this->new_y = $new_y; |
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| 368 | return true; |
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| 369 | } |
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| 370 | |||
| 371 | /** |
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| 372 | * Crop the image |
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| 373 | * |
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| 374 | * @param int $crop_x left column of the image |
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| 375 | * @param int $crop_y top row of the image |
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| 376 | * @param int $crop_width new cropped image width |
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| 377 | * @param int $crop_height new cropped image height |
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| 378 | */ |
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| 379 | function crop($new_x, $new_y, $new_width, $new_height) |
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| 380 | { |
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| 381 | if(function_exists('ImageCreateTrueColor')){ |
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| 382 | $new_img = $this->newImgPreserveAlpha(ImageCreateTrueColor($new_width,$new_height)); |
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| 383 | } else { |
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| 384 | $new_img =ImageCreate($new_width,$new_height); |
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| 385 | } |
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| 386 | if(function_exists('ImageCopyResampled')){ |
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| 387 | ImageCopyResampled($new_img, $this->imageHandle, 0, 0, $new_x, $new_y,$new_width,$new_height,$new_width,$new_height); |
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| 388 | } else { |
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| 389 | ImageCopyResized($new_img, $this->imageHandle, 0, 0, $new_x, $new_y, $new_width,$new_height,$new_width,$new_height); |
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| 390 | } |
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| 391 | $this->old_image = $this->imageHandle; |
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| 392 | $this->imageHandle = $new_img; |
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| 393 | $this->resized = true; |
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| 394 | |||
| 395 | $this->new_x = $new_x; |
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| 396 | $this->new_y = $new_y; |
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| 397 | return true; |
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| 398 | } |
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| 399 | |||
| 400 | /** |
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| 401 | * Flip the image horizontally or vertically |
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| 402 | * |
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| 403 | * @param boolean $horizontal true if horizontal flip, vertical otherwise |
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| 404 | */ |
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| 405 | function flip($horizontal) |
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| 406 | { |
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| 407 | if(!$horizontal) { |
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| 408 | $this->rotate(180); |
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| 409 | } |
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| 410 | |||
| 411 | $width = imagesx($this->imageHandle); |
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| 412 | $height = imagesy($this->imageHandle); |
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| 413 | |||
| 414 | for ($j = 0; $j < $height; $j++) { |
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| 415 | $left = 0; |
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| 416 | $right = $width-1; |
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| 417 | |||
| 418 | |||
| 419 | while ($left < $right) { |
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| 420 | //echo " j:".$j." l:".$left." r:".$right."\n<br>"; |
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| 421 | $t = imagecolorat($this->imageHandle, $left, $j); |
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| 422 | imagesetpixel($this->imageHandle, $left, $j, imagecolorat($this->imageHandle, $right, $j)); |
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| 423 | imagesetpixel($this->imageHandle, $right, $j, $t); |
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| 424 | $left++; $right--; |
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| 425 | } |
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| 426 | |||
| 427 | } |
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| 428 | |||
| 429 | return true; |
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| 430 | } |
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| 431 | |||
| 432 | |||
| 433 | /** |
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| 434 | * Adjust the image gamma |
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| 435 | * |
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| 436 | * @param float $outputgamma |
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| 437 | * |
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| 438 | * @return none |
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| 439 | */ |
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| 440 | function gamma($outputgamma=1.0) { |
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| 441 | ImageGammaCorrect($this->imageHandle, 1.0, $outputgamma); |
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| 442 | } |
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| 443 | function paletteToTrueColorWithTransparency() |
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| 444 | { |
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| 445 | $oldImg = $this->imageHandle; |
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| 446 | $newImg = $this->newImgPreserveAlpha( imagecreatetruecolor($this->img_x,$this->img_y) ); |
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| 447 | imagecopy($newImg,$oldImg,0,0,0,0,$this->img_x,$this->img_y); |
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| 448 | |||
| 449 | $this->imageHandle = $newImg; |
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| 450 | } |
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| 451 | |||
| 452 | function newImgPreserveAlpha($newImg) |
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| 453 | { |
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| 454 | if ( $this->type == 'jpeg') return $newImg; |
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| 455 | |||
| 456 | // Turn off transparency blending (temporarily) |
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| 457 | imagealphablending($newImg, false); |
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| 458 | |||
| 459 | // Create a new transparent color for image |
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| 460 | if ( $transparent = imagecolortransparent($this->imageHandle) >= 0 ) |
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| 461 | { |
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| 462 | if (imageistruecolor($this->imageHandle)) |
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| 463 | { |
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| 464 | $red = ($transparent & 0xFF0000) >> 16; |
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| 465 | $green = ($transparent & 0x00FF00) >> 8; |
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| 466 | $blue = ($transparent & 0x0000FF); |
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| 467 | $color_values = array('red' => $red, 'green' => $green, 'blue' => $blue); |
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| 468 | } |
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| 469 | else |
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| 470 | { |
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| 471 | $color_values = imagecolorsforindex($this->imageHandle,$transparent); |
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| 472 | |||
| 473 | } |
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| 474 | $color_values = imagecolorsforindex($this->imageHandle,$transparent); |
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| 475 | $color = imagecolorallocatealpha($newImg, $color_values['red'],$color_values['green'],$color_values['blue'], 127); |
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| 476 | $colort = imagecolorallocate($newImg, $color_values['red'],$color_values['green'],$color_values['blue']); |
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| 477 | } |
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| 478 | else |
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| 479 | { |
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| 480 | $color = imagecolorallocatealpha($newImg, 252, 2, 252, 127); |
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| 481 | $colort = imagecolorallocate($newImg, 252, 2, 252); |
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| 482 | } |
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| 483 | imagecolortransparent($newImg,$colort); |
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| 484 | |||
| 485 | // Completely fill the background of the new image with allocated color. |
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| 486 | imagefill($newImg, 0, 0, $color); |
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| 487 | |||
| 488 | // Restore transparency blending |
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| 489 | imagesavealpha($newImg, true); |
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| 490 | |||
| 491 | return $newImg; |
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| 492 | } |
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| 493 | |||
| 494 | function preserveTransparencyForPalette() |
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| 495 | { |
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| 496 | $new_img = imagecreatetruecolor($this->img_x,$this->img_y); |
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| 497 | $truecolor = imageistruecolor($this->imageHandle); |
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| 498 | $transparent = imagecolorallocate($new_img, 252,2,252); // nasty pinkish purple that hopefully doesn't exist in the image |
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| 499 | |||
| 500 | imagecolortransparent($new_img, $transparent); |
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| 501 | for ($i=0;$i<$this->img_y;$i++) |
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| 502 | { |
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| 503 | for ($j=0;$j<$this->img_x;$j++) |
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| 504 | { |
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| 505 | $c = imagecolorat($this->imageHandle,$j, $i); |
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| 506 | if ($truecolor) |
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| 507 | { |
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| 508 | $a = ($c >> 24) & 0xFF; |
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| 509 | $r = ($c >> 16) & 0xFF; |
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| 510 | $g = ($c >> 8) & 0xFF; |
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| 511 | $b = $c & 0xFF; |
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| 512 | $color_values = array('red' => $r, 'green' => $g, 'blue' => $b, 'alpha' => $a); |
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| 513 | } |
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| 514 | else |
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| 515 | { |
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| 516 | $color_values = imagecolorsforindex($this->imageHandle,$c); |
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| 517 | } |
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| 518 | if ($color_values['alpha'] >= 126) |
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| 519 | { |
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| 520 | imagesetpixel($new_img, $j, $i, $transparent); |
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| 521 | } |
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| 522 | else |
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| 523 | { |
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| 524 | imagesetpixel($new_img, $j, $i, $c); |
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| 525 | } |
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| 526 | } |
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| 527 | } |
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| 528 | $this->imageHandle = $new_img; |
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| 529 | } |
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| 530 | |||
| 531 | /** |
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| 532 | * Save the image file |
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| 533 | * |
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| 534 | * @param string $filename the name of the file to write to |
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| 535 | * @param int $quality output DPI, default is 85 |
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| 536 | * @param string $types define the output format, default |
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| 537 | * is the current used format |
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| 538 | * |
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| 539 | * @return none |
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| 540 | */ |
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| 541 | function save($filename, $type = '', $quality = 85) |
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| 542 | { |
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| 543 | $type = $type==''? $this->type : $type; |
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| 544 | $functionName = 'image' . $type; |
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| 545 | |||
| 546 | if(function_exists($functionName)) |
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| 547 | { |
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| 548 | $this->old_image = $this->imageHandle; |
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| 549 | if($type=='jpeg') |
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| 550 | $functionName($this->imageHandle, $filename, $quality); |
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| 551 | else |
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| 552 | $functionName($this->imageHandle, $filename); |
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| 553 | $this->imageHandle = $this->old_image; |
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| 554 | $this->resized = false; |
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| 555 | } |
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| 556 | } // End save |
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| 557 | |||
| 558 | |||
| 559 | /** |
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| 560 | * Display image without saving and lose changes |
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| 561 | * |
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| 562 | * @param string type (JPG,PNG...); |
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| 563 | * @param int quality 75 |
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| 564 | * |
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| 565 | * @return none |
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| 566 | */ |
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| 567 | function display($type = '', $quality = 75) |
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| 568 | { |
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| 569 | if ($type != '') { |
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| 570 | $this->type = $type; |
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| 571 | } |
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| 572 | $functionName = 'Image' . $this->type; |
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| 573 | if(function_exists($functionName)) |
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| 574 | { |
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| 575 | header('Content-type: image/' . strtolower($this->type)); |
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| 576 | $functionName($this->imageHandle, '', $quality); |
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| 577 | $this->imageHandle = $this->old_image; |
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| 578 | $this->resized = false; |
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| 579 | ImageDestroy($this->old_image); |
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| 580 | $this->free(); |
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| 581 | } |
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| 582 | } |
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| 583 | |||
| 584 | /** |
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| 585 | * Destroy image handle |
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| 586 | * |
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| 587 | * @return none |
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| 588 | */ |
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| 589 | function free() |
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| 593 | } |
||
| 594 | } |
||
| 595 | |||
| 596 | } // End class ImageGD |
||
| 597 | ?> |
||
| 598 |
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Adding explicit visibility (
private,protected, orpublic) is generally recommend to communicate to other developers how, and from where this method is intended to be used.