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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