[6779] | 1 | <?php |
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| 2 | /*********************************************************************** |
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| 3 | ** Title.........: NetPBM Driver |
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| 4 | ** Version.......: 1.0 |
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| 5 | ** Author........: Xiang Wei ZHUO <wei@zhuo.org> |
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| 6 | ** Filename......: NetPBM.php |
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| 7 | ** Last changed..: 30 Aug 2003 |
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| 8 | ** Notes.........: Orginal is from PEAR |
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| 9 | **/ |
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| 10 | |
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| 11 | // +----------------------------------------------------------------------+ |
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| 12 | // | PHP Version 4 | |
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| 13 | // +----------------------------------------------------------------------+ |
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| 14 | // | Copyright (c) 1997-2002 The PHP Group | |
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| 15 | // +----------------------------------------------------------------------+ |
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| 16 | // | This source file is subject to version 2.02 of the PHP license, | |
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| 17 | // | that is bundled with this package in the file LICENSE, and is | |
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| 18 | // | available at through the world-wide-web at | |
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| 19 | // | http://www.php.net/license/2_02.txt. | |
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| 20 | // | If you did not receive a copy of the PHP license and are unable to | |
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| 21 | // | obtain it through the world-wide-web, please send a note to | |
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| 22 | // | license@php.net so we can mail you a copy immediately. | |
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| 23 | // +----------------------------------------------------------------------+ |
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| 24 | // | Authors: Peter Bowyer <peter@mapledesign.co.uk> | |
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| 25 | // +----------------------------------------------------------------------+ |
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| 26 | // |
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| 27 | // |
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| 28 | // Image Transformation interface using command line NetPBM |
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| 29 | |
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| 30 | require_once "Transform.php"; |
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| 31 | |
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| 32 | Class Image_Transform_Driver_NetPBM extends Image_Transform |
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| 33 | { |
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| 34 | |
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| 35 | /** |
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| 36 | * associative array commands to be executed |
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| 37 | * @var array |
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| 38 | */ |
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| 39 | var $command = array(); |
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| 40 | |
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| 41 | /** |
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| 42 | * Class Constructor |
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| 43 | */ |
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| 44 | function Image_Transform_Driver_NetPBM() |
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| 45 | { |
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| 46 | $this->uid = md5($_SERVER['REMOTE_ADDR']); |
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| 47 | |
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| 48 | return true; |
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| 49 | } // End function Image_NetPBM |
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| 50 | |
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| 51 | /** |
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| 52 | * Load image |
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| 53 | * |
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| 54 | * @param string filename |
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| 55 | * |
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| 56 | * @return mixed none or a PEAR error object on error |
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| 57 | * @see PEAR::isError() |
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| 58 | */ |
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| 59 | function load($image) |
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| 60 | { |
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| 61 | //echo $image; |
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| 62 | $this->image = $image; |
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| 63 | $this->_get_image_details($image); |
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| 64 | } // End load |
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| 65 | |
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| 66 | /** |
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| 67 | * Resizes the image |
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| 68 | * |
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| 69 | * @return none |
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| 70 | * @see PEAR::isError() |
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| 71 | */ |
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| 72 | function _resize($new_x, $new_y) |
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| 73 | { |
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| 74 | // there's no technical reason why resize can't be called multiple |
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| 75 | // times...it's just silly to do so |
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| 76 | |
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| 77 | $this->command[] = IMAGE_TRANSFORM_LIB_PATH . |
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| 78 | "pnmscale -width $new_x -height $new_y"; |
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| 79 | |
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| 80 | $this->_set_new_x($new_x); |
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| 81 | $this->_set_new_y($new_y); |
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| 82 | } // End resize |
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| 83 | |
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| 84 | /** |
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| 85 | * Crop the image |
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| 86 | * |
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| 87 | * @param int $crop_x left column of the image |
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| 88 | * @param int $crop_y top row of the image |
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| 89 | * @param int $crop_width new cropped image width |
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| 90 | * @param int $crop_height new cropped image height |
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| 91 | */ |
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| 92 | function crop($crop_x, $crop_y, $crop_width, $crop_height) |
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| 93 | { |
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| 94 | $this->command[] = IMAGE_TRANSFORM_LIB_PATH . |
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| 95 | "pnmcut -left $crop_x -top $crop_y -width $crop_width -height $crop_height"; |
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| 96 | } |
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| 97 | |
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| 98 | /** |
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| 99 | * Rotates the image |
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| 100 | * |
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| 101 | * @param int $angle The angle to rotate the image through |
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| 102 | */ |
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| 103 | function rotate($angle) |
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| 104 | { |
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| 105 | $angle = -1*floatval($angle); |
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| 106 | |
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| 107 | if($angle > 90) |
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| 108 | { |
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| 109 | $this->command[] = IMAGE_TRANSFORM_LIB_PATH . "pnmrotate -noantialias 90"; |
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| 110 | $this->rotate(-1*($angle-90)); |
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| 111 | } |
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| 112 | else if ($angle < -90) |
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| 113 | { |
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| 114 | $this->command[] = IMAGE_TRANSFORM_LIB_PATH . "pnmrotate -noantialias -90"; |
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| 115 | $this->rotate(-1*($angle+90)); |
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| 116 | } |
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| 117 | else |
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| 118 | $this->command[] = IMAGE_TRANSFORM_LIB_PATH . "pnmrotate -noantialias $angle"; |
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| 119 | } // End rotate |
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| 120 | |
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| 121 | /** |
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| 122 | * Flip the image horizontally or vertically |
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| 123 | * |
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| 124 | * @param boolean $horizontal true if horizontal flip, vertical otherwise |
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| 125 | */ |
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| 126 | function flip($horizontal) |
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| 127 | { |
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| 128 | if($horizontal) |
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| 129 | $this->command[] = IMAGE_TRANSFORM_LIB_PATH . "pnmflip -lr"; |
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| 130 | else |
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| 131 | $this->command[] = IMAGE_TRANSFORM_LIB_PATH . "pnmflip -tb"; |
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| 132 | } |
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| 133 | |
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| 134 | /** |
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| 135 | * Adjust the image gamma |
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| 136 | * |
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| 137 | * @param float $outputgamma |
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| 138 | * |
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| 139 | * @return none |
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| 140 | */ |
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| 141 | function gamma($outputgamma = 1.0) { |
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| 142 | $this->command[13] = IMAGE_TRANSFORM_LIB_PATH . "pnmgamma $outputgamma"; |
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| 143 | } |
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| 144 | |
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| 145 | /** |
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| 146 | * adds text to an image |
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| 147 | * |
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| 148 | * @param array options Array contains options |
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| 149 | * array( |
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| 150 | * 'text' // The string to draw |
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| 151 | * 'x' // Horizontal position |
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| 152 | * 'y' // Vertical Position |
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| 153 | * 'Color' // Font color |
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| 154 | * 'font' // Font to be used |
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| 155 | * 'size' // Size of the fonts in pixel |
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| 156 | * 'resize_first' // Tell if the image has to be resized |
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| 157 | * // before drawing the text |
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| 158 | * ) |
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| 159 | * |
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| 160 | * @return none |
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| 161 | */ |
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| 162 | function addText($params) |
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| 163 | { |
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| 164 | $default_params = array('text' => 'This is Text', |
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| 165 | 'x' => 10, |
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| 166 | 'y' => 20, |
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| 167 | 'color' => 'red', |
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| 168 | 'font' => 'Arial.ttf', |
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| 169 | 'size' => '12', |
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| 170 | 'angle' => 0, |
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| 171 | 'resize_first' => false); |
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| 172 | // we ignore 'resize_first' since the more logical approach would be |
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| 173 | // for the user to just call $this->_resize() _first_ ;) |
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| 174 | extract(array_merge($default_params, $params)); |
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| 175 | $this->command[] = "ppmlabel -angle $angle -colour $color -size " |
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| 176 | ."$size -x $x -y ".$y+$size." -text \"$text\""; |
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| 177 | } // End addText |
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| 178 | |
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| 179 | function _postProcess($type, $quality, $save_type) |
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| 180 | { |
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| 181 | $type = is_null($type) || $type==''? $this->type : $type; |
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| 182 | $save_type = is_null($save_type) || $save_type==''? $this->type : $save_type; |
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| 183 | //echo "TYPE:". $this->type; |
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| 184 | array_unshift($this->command, IMAGE_TRANSFORM_LIB_PATH |
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| 185 | . $type.'topnm '. $this->image); |
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| 186 | $arg = ''; |
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| 187 | switch(strtolower($save_type)){ |
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| 188 | case 'gif': |
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| 189 | $this->command[] = IMAGE_TRANSFORM_LIB_PATH . "ppmquant 256"; |
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| 190 | $this->command[] = IMAGE_TRANSFORM_LIB_PATH . "ppmto$save_type"; |
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| 191 | break; |
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| 192 | case 'jpg': |
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| 193 | case 'jpeg': |
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| 194 | $arg = "--quality=$quality"; |
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| 195 | $this->command[] = IMAGE_TRANSFORM_LIB_PATH . "ppmto$save_type $arg"; |
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| 196 | break; |
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| 197 | default: |
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| 198 | $this->command[] = IMAGE_TRANSFORM_LIB_PATH . "pnmto$save_type $arg"; |
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| 199 | break; |
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| 200 | } // switch |
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| 201 | return implode('|', $this->command); |
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| 202 | } |
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| 203 | |
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| 204 | /** |
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| 205 | * Save the image file |
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| 206 | * |
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| 207 | * @param $filename string the name of the file to write to |
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| 208 | * @param string $type (jpeg,png...); |
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| 209 | * @param int $quality 75 |
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| 210 | * @return none |
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| 211 | */ |
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| 212 | function save($filename, $type=null, $quality = 85) |
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| 213 | { |
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| 214 | $cmd = $this->_postProcess('', $quality, $type) . ">$filename"; |
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| 215 | |
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| 216 | //If you are using windows, you need the following line. |
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| 217 | //$cmd = ereg_replace('/','\\',$cmd); |
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| 218 | //echo $cmd."##"; |
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| 219 | system($cmd); |
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| 220 | $this->command = array(); |
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| 221 | } // End save |
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| 222 | |
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| 223 | |
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| 224 | /** |
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| 225 | * Display image without saving and lose changes |
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| 226 | * |
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| 227 | * @param string $type (jpeg,png...); |
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| 228 | * @param int $quality 75 |
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| 229 | * @return none |
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| 230 | */ |
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| 231 | function display($type = null, $quality = 75) |
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| 232 | { |
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| 233 | header('Content-type: image/' . $type); |
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| 234 | $cmd = $this->_postProcess($type, $quality); |
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| 235 | |
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| 236 | passthru($cmd); |
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| 237 | $this->command = array(); |
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| 238 | } |
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| 239 | |
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| 240 | /** |
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| 241 | * Destroy image handle |
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| 242 | * |
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| 243 | * @return none |
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| 244 | */ |
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| 245 | function free() |
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| 246 | { |
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| 247 | // there is no image handle here |
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| 248 | return true; |
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| 249 | } |
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| 250 | |
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| 251 | |
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| 252 | } // End class ImageIM |
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| 253 | ?> |
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