[1] | 1 | <?php |
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| 2 | /** |
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[42] | 3 | * ImageThumb.inc.php |
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[1] | 4 | * Code by Strangecode :: www.strangecode.com :: This document contains copyrighted information |
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| 5 | * |
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| 6 | * @author Quinn Comendant <quinn@strangecode.com> |
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[119] | 7 | * @requires Netpbm <http://sourceforge.net/projects/netpbm/> and libjpeg or GD. |
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| 8 | * @version 2.0 |
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[1] | 9 | */ |
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| 10 | |
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[119] | 11 | // Image resize options. |
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[1] | 12 | define('IMAGETHUMB_FIT_WIDTH', 1); |
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| 13 | define('IMAGETHUMB_FIT_HEIGHT', 2); |
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| 14 | define('IMAGETHUMB_FIT_LARGER', 3); |
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| 15 | define('IMAGETHUMB_STRETCH', 4); |
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| 16 | define('IMAGETHUMB_NO_SCALE', 5); |
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[119] | 17 | define('IMAGETHUMB_METHOD_NETPBM', 6); |
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| 18 | define('IMAGETHUMB_METHOD_GD', 7); |
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[1] | 19 | |
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| 20 | class ImageThumb { |
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[119] | 21 | |
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| 22 | // General object parameters. |
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| 23 | var $_params = array( |
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| 24 | // The location for images to create thumbnails from. |
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| 25 | 'source_dir' => null, |
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[42] | 26 | |
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[119] | 27 | // Existing files will be overwritten when there is a name conflict? |
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| 28 | 'allow_overwriting' => false, |
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[42] | 29 | |
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[119] | 30 | // The file permissions of the uploaded files. Remember, files will be owned by the web server user. |
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| 31 | 'dest_file_perms' => 0600, |
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[42] | 32 | |
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[119] | 33 | // Permissions of autocreated directories. Must be at least 0700 with owner=apache. |
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| 34 | 'dest_dir_perms' => 0777, |
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[42] | 35 | |
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[119] | 36 | // Require file to have one of the following file name extentions. |
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| 37 | 'valid_file_extensions' => array('jpg', 'jpeg', 'gif', 'png'), |
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| 38 | |
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| 39 | // Method to use for resizing. (IMAGETHUMB_METHOD_NETPBM or IMAGETHUMB_METHOD_GD) |
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| 40 | 'resize_method' => IMAGETHUMB_METHOD_NETPBM, |
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[1] | 41 | |
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[119] | 42 | // Netpbm and libjpeg binary locations. |
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| 43 | 'anytopnm_binary' => '/usr/bin/anytopnm', |
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| 44 | 'pnmscale_binary' => '/usr/bin/pnmscale', |
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| 45 | 'cjpeg_binary' => '/usr/bin/cjpeg', |
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[42] | 46 | |
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[119] | 47 | // Which messages do we pass to raiseMsg? Use one of the MSG_* constants or false to disable. |
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| 48 | 'display_messages' => MSG_ALL, |
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| 49 | ); |
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| 50 | |
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| 51 | // Default image size specs. |
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| 52 | var $default_image_specs = array( |
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| 53 | // The destination for an image thumbnail size. Path relative to source_dir (eg: ../thumbs). |
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| 54 | 'dest_dir' => null, |
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[120] | 55 | |
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| 56 | // Destination file types. (IMG_JPG, IMG_PNG, IMG_GIF, IMG_WBMP) |
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| 57 | 'dest_file_type' => IMG_JPG, |
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| 58 | |
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| 59 | // Destination file types. ('jpg', 'png', 'gif', 'wbmp') |
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| 60 | 'dest_file_extention' => 'jpg', |
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| 61 | |
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[119] | 62 | // Type of scaling to perform, and sizes used to calculate max dimentions. |
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| 63 | 'scaling_type' => IMAGETHUMB_FIT_LARGER, |
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| 64 | 'width' => null, |
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| 65 | 'height' => null, |
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[120] | 66 | |
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[119] | 67 | // Percentage quality of image compression output 0-100. |
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| 68 | 'quality' => 65, |
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[120] | 69 | |
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[119] | 70 | // Create progressive jpegs? |
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| 71 | 'progressive' => false, |
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[120] | 72 | |
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| 73 | // If using GD method, apply sharpen filter. Requires PHP > 5.1. |
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| 74 | 'sharpen' => true, |
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| 75 | |
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| 76 | // Integers between 1-100, useful values are 65-85. |
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| 77 | 'sharpen_value' => 75, |
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| 78 | |
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[119] | 79 | // If source image is smaller than thumbnail, allow upscaling? |
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| 80 | 'allow_upscaling' => false, |
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[120] | 81 | |
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[119] | 82 | // If thumb exists and filesize is smaller than this, do not overwrite the thumb. |
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| 83 | 'keep_filesize' => null, |
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| 84 | ); |
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[1] | 85 | |
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[119] | 86 | // Final specifications for image sizes, set with setSpec(). |
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| 87 | var $image_specs = array(); |
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| 88 | |
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[1] | 89 | /** |
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[119] | 90 | * Set (or overwrite existing) parameters by passing an array of new parameters. |
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[1] | 91 | * |
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[119] | 92 | * @access public |
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| 93 | * @param array $params Array of parameters (key => val pairs). |
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[1] | 94 | */ |
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[119] | 95 | function setParam($params) |
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[1] | 96 | { |
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[119] | 97 | if (isset($params) && is_array($params)) { |
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| 98 | |
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| 99 | // Enforce valid upload_path parameter. |
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| 100 | if (isset($params['source_dir'])) { |
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| 101 | $params['source_dir'] = realpath($params['source_dir']); |
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| 102 | // Must be directory. |
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| 103 | if (!is_dir($params['source_dir'])) { |
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| 104 | App::logMsg(sprintf('Source directory invalid: %s', $params['source_dir']), LOG_ERR, __FILE__, __LINE__); |
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| 105 | trigger_error(sprintf('Source directory invalid: %s', $params['source_dir']), E_USER_ERROR); |
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| 106 | } |
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| 107 | // Must be readable. |
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| 108 | if (!is_readable($params['source_dir'])) { |
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| 109 | App::logMsg(sprintf('Source directory not readable: %s', $params['source_dir']), LOG_ERR, __FILE__, __LINE__); |
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| 110 | trigger_error(sprintf('Source directory not readable: %s', $params['source_dir']), E_USER_ERROR); |
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| 111 | } |
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| 112 | } |
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| 113 | |
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| 114 | // Merge new parameters with old overriding only those passed. |
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| 115 | $this->_params = array_merge($this->_params, $params); |
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| 116 | } else { |
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| 117 | App::logMsg(sprintf('Parameters are not an array: %s', $params), LOG_ERR, __FILE__, __LINE__); |
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[1] | 118 | } |
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| 119 | } |
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| 120 | |
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| 121 | /** |
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[119] | 122 | * Return the value of a parameter, if it exists. |
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[1] | 123 | * |
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[119] | 124 | * @access public |
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| 125 | * @param string $param Which parameter to return. |
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| 126 | * @return mixed Configured parameter value. |
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[1] | 127 | */ |
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[119] | 128 | function getParam($param) |
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[1] | 129 | { |
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[119] | 130 | if (isset($this->_params[$param])) { |
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| 131 | return $this->_params[$param]; |
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| 132 | } else { |
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| 133 | App::logMsg(sprintf('Parameter is not set: %s', $param), LOG_DEBUG, __FILE__, __LINE__); |
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| 134 | return null; |
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[1] | 135 | } |
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| 136 | } |
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| 137 | |
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| 138 | /** |
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| 139 | * Set the specification of thumbnails. |
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| 140 | * |
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| 141 | * @access public |
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[119] | 142 | * @param array $spec The specifications for a size of output image. |
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[1] | 143 | */ |
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[120] | 144 | function setSpec($spec, $index=null) |
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[1] | 145 | { |
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[119] | 146 | // A little sanity checking. |
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| 147 | if (!isset($spec['dest_dir']) || '' == $spec['dest_dir']) { |
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| 148 | App::logMsg('setSpec error: dest_dir not specified.', LOG_ERR, __FILE__, __LINE__); |
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[1] | 149 | } |
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[120] | 150 | if (isset($spec['dest_file_type'])) { |
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| 151 | switch ($spec['dest_file_type']) { |
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| 152 | case IMG_JPG : |
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| 153 | if (imagetypes() & IMG_JPG == 0) { |
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| 154 | App::logMsg(sprintf('IMG_JPG is not supported by this version of PHP GD.', null), LOG_ERR, __FILE__, __LINE__); |
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| 155 | } |
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| 156 | $spec['dest_file_extention'] = 'jpg'; |
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| 157 | break; |
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| 158 | case IMG_PNG : |
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| 159 | if (imagetypes() & IMG_PNG == 0) { |
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| 160 | App::logMsg(sprintf('IMG_PNG is not supported by this version of PHP GD.', null), LOG_ERR, __FILE__, __LINE__); |
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| 161 | } |
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| 162 | $spec['dest_file_extention'] = 'png'; |
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| 163 | break; |
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| 164 | case IMG_GIF : |
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| 165 | if (imagetypes() & IMG_GIF == 0) { |
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| 166 | App::logMsg(sprintf('IMG_GIF is not supported by this version of PHP GD.', null), LOG_ERR, __FILE__, __LINE__); |
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| 167 | } |
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| 168 | $spec['dest_file_extention'] = 'gif'; |
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| 169 | break; |
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| 170 | case IMG_WBMP : |
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| 171 | if (imagetypes() & IMG_WBMP == 0) { |
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| 172 | App::logMsg(sprintf('IMG_WBMP is not supported by this version of PHP GD.', null), LOG_ERR, __FILE__, __LINE__); |
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| 173 | } |
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| 174 | $spec['dest_file_extention'] = 'wbmp'; |
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| 175 | break; |
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| 176 | default : |
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| 177 | App::logMsg(sprintf('Invalid dest_file_type: %s', $spec['dest_file_type']), LOG_ERR, __FILE__, __LINE__); |
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| 178 | break; |
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| 179 | } |
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| 180 | } |
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[119] | 181 | if (!isset($spec['width']) || !is_int($spec['width'])) { |
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| 182 | App::logMsg('setSpec error: width not specified.', LOG_ERR, __FILE__, __LINE__); |
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| 183 | } |
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| 184 | if (!isset($spec['height']) || !is_int($spec['height'])) { |
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| 185 | App::logMsg('setSpec error: height not specified.', LOG_ERR, __FILE__, __LINE__); |
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| 186 | } |
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[120] | 187 | if (isset($spec['quality']) && IMG_JPG != $spec['dest_file_type']) { |
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[119] | 188 | App::logMsg('The "quality" specification is not used unless IMG_JPG is the dest_file_type.', LOG_INFO, __FILE__, __LINE__); |
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| 189 | } |
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[120] | 190 | if (isset($spec['progressive']) && IMG_JPG != $spec['dest_file_type']) { |
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[119] | 191 | App::logMsg('The "progressive" specification is not used unless IMG_JPG is the dest_file_type.', LOG_INFO, __FILE__, __LINE__); |
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| 192 | } |
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[120] | 193 | |
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| 194 | if (isset($index) && isset($this->image_specs[$index])) { |
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| 195 | // Merge with previous. |
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[121] | 196 | $final_spec = array_merge($this->image_specs[$index], $spec); |
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| 197 | $this->image_specs[$index] = $final_spec; |
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[120] | 198 | } else { |
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| 199 | // Merge with defaults. |
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[121] | 200 | $final_spec = array_merge($this->default_image_specs, $spec); |
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| 201 | $this->image_specs[] = $final_spec; |
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[120] | 202 | } |
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[121] | 203 | |
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| 204 | return $final_spec; |
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[1] | 205 | } |
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| 206 | |
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| 207 | /** |
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[119] | 208 | * Process an entire directory of images. |
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[1] | 209 | * |
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| 210 | * @access public |
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| 211 | * @return bool true on success, false on failure. |
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| 212 | */ |
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[121] | 213 | function processAll($runtime_specs=null) |
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[1] | 214 | { |
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| 215 | // Ensure we have a source. |
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[119] | 216 | if ('' == $this->getParam('source_dir')) { |
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| 217 | App::logMsg(sprintf('Source directory not set before processing.'), LOG_ERR, __FILE__, __LINE__); |
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[1] | 218 | return false; |
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| 219 | } |
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[119] | 220 | |
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| 221 | // Get all files in source directory. |
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| 222 | $dir_handle = opendir($this->getParam('source_dir')); |
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| 223 | while ($dir_handle && ($file = readdir($dir_handle)) !== false) { |
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| 224 | // If the file name does not start with a dot (. or .. or .htaccess). |
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| 225 | if (!preg_match('/^\./', $file) && in_array(strtolower(substr($file, strrpos($file, '.') + 1)), $this->getParam('valid_file_extensions'))) { |
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| 226 | $files[] = $file; |
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[1] | 227 | } |
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| 228 | } |
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[42] | 229 | |
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[119] | 230 | // Process each found file. |
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| 231 | if (is_array($files) && !empty($files)) { |
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| 232 | $return_val = 0; |
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| 233 | foreach ($files as $file_name) { |
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[121] | 234 | $return_val += $this->processFile($file_name, $runtime_specs); |
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[119] | 235 | } |
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[120] | 236 | $this->_raiseMsg(sprintf(_("Resized %s images."), sizeof($files)), MSG_SUCCESS, __FILE__, __LINE__); |
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[119] | 237 | return 0 === $return_val; |
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| 238 | } else { |
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| 239 | App::logMsg(sprintf('No images found to thumbnail in directory %s.', $this->getParam('source_dir')), LOG_NOTICE, __FILE__, __LINE__); |
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| 240 | return false; |
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| 241 | } |
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[1] | 242 | } |
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| 243 | |
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| 244 | /** |
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| 245 | * Generate thumbnails for the specified file. |
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| 246 | * |
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| 247 | * @access public |
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| 248 | * @param string $file_name Name of file with extention. |
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[121] | 249 | * @param array $runtime_specs Array of specifications that will override all configured specifications. |
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[1] | 250 | * @return bool true on success, false on failure. |
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| 251 | */ |
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[121] | 252 | function processFile($file_name, $runtime_specs=null) |
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[1] | 253 | { |
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[119] | 254 | // Source file determinted by provided file_name. |
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| 255 | $source_file = realpath(sprintf('%s/%s', $this->getParam('source_dir'), $file_name)); |
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| 256 | |
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| 257 | // Ensure we have a source. |
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| 258 | if (sizeof($this->image_specs) < 1) { |
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[121] | 259 | if (is_array($runtime_specs)) { |
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| 260 | $this->setSpec($runtime_specs, 0); |
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| 261 | } else { |
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| 262 | App::logMsg(sprintf('Image specifications not set before processing.'), LOG_ERR, __FILE__, __LINE__); |
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| 263 | return false; |
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| 264 | } |
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[1] | 265 | } |
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[42] | 266 | |
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[1] | 267 | // Ensure we have a source. |
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[119] | 268 | if ('' == $this->getParam('source_dir')) { |
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[1] | 269 | App::logMsg(sprintf('Source directory not set before processing.'), LOG_ERR, __FILE__, __LINE__); |
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| 270 | return false; |
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| 271 | } |
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[42] | 272 | |
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[1] | 273 | // Confirm source image exists. |
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[119] | 274 | if (!file_exists($source_file)) { |
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[120] | 275 | $this->_raiseMsg(sprintf(_("Image resizing failed: source image %s was not found."), $file_name), MSG_ERR, __FILE__, __LINE__); |
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[121] | 276 | App::logMsg(sprintf('Source image not found: %s', $source_file), LOG_ALERT, __FILE__, __LINE__); |
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[1] | 277 | return false; |
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| 278 | } |
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[42] | 279 | |
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[1] | 280 | // Confirm source image is readable. |
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[119] | 281 | if (!is_readable($source_file)) { |
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[120] | 282 | $this->_raiseMsg(sprintf(_("Image resizing failed: source image %s is not readable."), $file_name), MSG_ERR, __FILE__, __LINE__); |
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[121] | 283 | App::logMsg(sprintf('Source image not readable: %s', $source_file), LOG_ALERT, __FILE__, __LINE__); |
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[1] | 284 | return false; |
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| 285 | } |
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[42] | 286 | |
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[1] | 287 | // Confirm source image contains data. |
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[119] | 288 | if (filesize($source_file) <= 0) { |
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[120] | 289 | $this->_raiseMsg(sprintf(_("Image resizing failed: source image %s is zero bytes."), $file_name), MSG_ERR, __FILE__, __LINE__); |
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[121] | 290 | App::logMsg(sprintf('Source image is zero bytes: %s', $source_file), LOG_ALERT, __FILE__, __LINE__); |
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[1] | 291 | return false; |
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| 292 | } |
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[42] | 293 | |
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[1] | 294 | // Confirm source image has a valid file extension. |
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[119] | 295 | if (!$this->_validFileExtension($file_name)) { |
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[120] | 296 | $this->_raiseMsg(sprintf(_("Image resizing failed: source image %s not a valid type. It must have one of the following file name extensions: %s"), $file_name, join(', ', $this->getParam('valid_file_extensions'))), MSG_ERR, __FILE__, __LINE__); |
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[121] | 297 | App::logMsg(sprintf('Image resizing failed: source image not of valid type: %s', $source_file), LOG_ERR, __FILE__, __LINE__); |
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[1] | 298 | return false; |
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| 299 | } |
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[42] | 300 | |
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[119] | 301 | // Ensure destination directories are created. This will only be called once per page load. |
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| 302 | $this->_createDestDirs(); |
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| 303 | |
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| 304 | // To keep this script running even if user tries to stop browser. |
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| 305 | ignore_user_abort(true); |
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[121] | 306 | ini_set('max_execution_time', 300); |
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| 307 | ini_set('max_input_time', 300); |
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[1] | 308 | |
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| 309 | // This remains zero until something goes wrong. |
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[119] | 310 | $return_val = 0; |
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[42] | 311 | |
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[121] | 312 | foreach ($this->image_specs as $index => $spec) { |
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[119] | 313 | |
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[121] | 314 | if (is_array($runtime_specs)) { |
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| 315 | // Override with runtime specs. |
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| 316 | $spec = $this->setSpec($runtime_specs, $index); |
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| 317 | } |
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| 318 | |
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[119] | 319 | // Destination filename uses the extention defined by dest_file_extention. |
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[120] | 320 | $dest_file = realpath(sprintf('%s/%s/%s.%s', $this->getParam('source_dir'), $spec['dest_dir'], substr($file_name, 0, strrpos($file_name, '.')), $spec['dest_file_extention'])); |
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[42] | 321 | |
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[119] | 322 | // Skip existing thumbnails with file size below $spec['keep_filesize']. |
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| 323 | if (isset($spec['keep_filesize']) && file_exists($dest_file)) { |
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| 324 | $file_size = filesize($dest_file); |
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| 325 | if (false !== $file_size && $file_size < $spec['keep_filesize']) { |
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| 326 | App::logMsg(sprintf('Skipping thumbnail %s. File already exists and file size is less than %s bytes.', $spec['dest_dir'] . '/' . $file_name, $spec['keep_filesize']), LOG_DEBUG, __FILE__, __LINE__); |
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[1] | 327 | continue; |
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| 328 | } |
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| 329 | } |
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[42] | 330 | |
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[119] | 331 | // Determine if original file size is smaller than specified thumbnail size. Do not scale-up if $spec['allow_upscaling'] config is set to false. |
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| 332 | $image_size = getimagesize($source_file); |
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| 333 | if ($image_size['0'] <= $spec['width'] && $image_size['1'] <= $spec['height'] && !$spec['allow_upscaling']) { |
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| 334 | $spec['scaling_type'] = IMAGETHUMB_NO_SCALE; |
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| 335 | App::logMsg(sprintf('Image %s smaller than specified %s thumbnail size. Keeping original size.', $file_name, $spec['dest_dir']), LOG_DEBUG, __FILE__, __LINE__); |
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[1] | 336 | } |
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[42] | 337 | |
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[119] | 338 | // DO IT! Based on available method. |
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| 339 | if (IMAGETHUMB_METHOD_NETPBM === $this->getParam('resize_method') && file_exists($this->getParam('anytopnm_binary')) && file_exists($this->getParam('pnmscale_binary')) && file_exists($this->getParam('cjpeg_binary'))) { |
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| 340 | // Resize using Netpbm binaries. |
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| 341 | App::logMsg(sprintf('Resizing with Netpbm...', null), LOG_DEBUG, __FILE__, __LINE__); |
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| 342 | $return_val += $this->_resizeWithNetpbm($source_file, $dest_file, $spec); |
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| 343 | } else if (IMAGETHUMB_METHOD_GD === $this->getParam('resize_method') && extension_loaded('gd')) { |
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| 344 | // Resize with GD. |
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| 345 | App::logMsg(sprintf('Resizing with GD...', null), LOG_DEBUG, __FILE__, __LINE__); |
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| 346 | $return_val += $this->_resizeWithGD($source_file, $dest_file, $spec); |
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[1] | 347 | } else { |
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[119] | 348 | App::logMsg(sprintf('Image thumbnailing failed. Neither Netpbm or GD is available.', null), LOG_DEBUG, __FILE__, __LINE__); |
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| 349 | return false; |
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[1] | 350 | } |
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[119] | 351 | } |
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[42] | 352 | |
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[119] | 353 | // If > 0, there was a problem thumb-nailing. |
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| 354 | return 0 === $return_val; |
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| 355 | } |
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| 356 | |
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| 357 | /* |
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| 358 | * Use the Netpbm and libjpg cjpeg tools to generate a rescaled compressed image. |
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| 359 | * This is the preferred method over GD which has (supposedly) less quality. |
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| 360 | * |
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| 361 | * @access private |
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| 362 | * @param string $source_file Full path to source image file. |
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| 363 | * @param string $dest_file Full path to destination image file. |
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| 364 | * @param array $spec Array of image size specifications. |
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[120] | 365 | * @return int 0 if no error, n > 0 if errors. |
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[119] | 366 | * @author Quinn Comendant <quinn@strangecode.com> |
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| 367 | * @version 1.0 |
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| 368 | * @since 19 May 2006 13:55:46 |
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| 369 | */ |
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| 370 | function _resizeWithNetpbm($source_file, $dest_file, $spec) |
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| 371 | { |
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| 372 | // Define pnmscale arguments. |
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| 373 | switch ($spec['scaling_type']) { |
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| 374 | case IMAGETHUMB_FIT_WIDTH : |
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| 375 | $pnmscale_args = sprintf(' -width %s ', escapeshellarg($spec['width'])); |
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| 376 | break; |
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| 377 | case IMAGETHUMB_FIT_HEIGHT : |
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| 378 | $pnmscale_args = sprintf(' -height %s ', escapeshellarg($spec['height'])); |
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| 379 | break; |
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| 380 | case IMAGETHUMB_FIT_LARGER : |
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| 381 | $pnmscale_args = sprintf(' -xysize %s %s ', escapeshellarg($spec['width']), escapeshellarg($spec['height'])); |
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| 382 | break; |
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| 383 | case IMAGETHUMB_STRETCH : |
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| 384 | $pnmscale_args = sprintf(' -width %s -height %s ', escapeshellarg($spec['width']), escapeshellarg($spec['height'])); |
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| 385 | break; |
---|
| 386 | case IMAGETHUMB_NO_SCALE : |
---|
| 387 | default : |
---|
| 388 | $pnmscale_args = ' 1 '; |
---|
| 389 | break; |
---|
[1] | 390 | } |
---|
[42] | 391 | |
---|
[119] | 392 | // Define cjpeg arguments. |
---|
| 393 | $cjpeg_args = sprintf(' -optimize -quality %s ', escapeshellarg($spec['quality'])); |
---|
| 394 | $cjpeg_args .= (true === $spec['progressive']) ? ' -progressive ' : ''; |
---|
| 395 | |
---|
| 396 | // Format the command that creates the thumbnail. |
---|
| 397 | $command = sprintf('%s %s | %s %s | %s %s > %s/%s', |
---|
| 398 | escapeshellcmd($this->getParam('anytopnm_binary')), |
---|
| 399 | escapeshellcmd($source_file), |
---|
| 400 | escapeshellcmd($this->getParam('pnmscale_binary')), |
---|
| 401 | escapeshellcmd($pnmscale_args), |
---|
| 402 | escapeshellcmd($this->getParam('cjpeg_binary')), |
---|
| 403 | escapeshellcmd($cjpeg_args), |
---|
| 404 | escapeshellcmd($dest_file), |
---|
| 405 | escapeshellcmd($file_name) |
---|
| 406 | ); |
---|
| 407 | App::logMsg(sprintf('ImageThumb Netpbm command: %s', $command), LOG_DEBUG, __FILE__, __LINE__); |
---|
| 408 | |
---|
| 409 | // Execute! |
---|
| 410 | exec($command, $output, $return_val); |
---|
| 411 | |
---|
| 412 | if (0 === $return_val) { |
---|
| 413 | // Success! |
---|
| 414 | // Make the thumbnail writable so the user can delete it over ftp without being 'apache'. |
---|
| 415 | chmod($dest_file, $this->getParam('dest_file_perms')); |
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[120] | 416 | App::logMsg(sprintf('Successfully resized image %s', $spec['dest_dir'] . '/' . basename($dest_file), $return_val), LOG_DEBUG, __FILE__, __LINE__); |
---|
[119] | 417 | } else { |
---|
| 418 | // An error occurred. |
---|
[120] | 419 | App::logMsg(sprintf('Image %s failed resizing with return value: %s%s', $spec['dest_dir'] . '/' . basename($dest_file), $return_val, empty($output) ? '' : ' (' . getDump($output) . ')'), LOG_ERR, __FILE__, __LINE__); |
---|
[119] | 420 | } |
---|
| 421 | |
---|
| 422 | // Return from the command will be > 0 if there was an error. |
---|
| 423 | return $return_val; |
---|
[1] | 424 | } |
---|
| 425 | |
---|
[119] | 426 | /* |
---|
| 427 | * Use PHP's built-in GD tools to generate a rescaled compressed image. |
---|
| 428 | * |
---|
| 429 | * @access private |
---|
| 430 | * @param string $source_file Full path to source image file. |
---|
| 431 | * @param string $dest_file Full path to destination image file. |
---|
| 432 | * @param array $spec Array of image size specifications. |
---|
[120] | 433 | * @return int 0 if no error, n > 0 if errors. |
---|
[119] | 434 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
| 435 | * @version 1.0 |
---|
| 436 | * @since 19 May 2006 15:46:02 |
---|
| 437 | */ |
---|
| 438 | function _resizeWithGD($source_file, $dest_file, $spec) |
---|
[1] | 439 | { |
---|
[119] | 440 | // Get original file dimensions and type. |
---|
| 441 | list($source_image_width, $source_image_height, $source_image_type) = getimagesize($source_file); |
---|
| 442 | |
---|
| 443 | // Define destination image dimentions. |
---|
| 444 | switch ($spec['scaling_type']) { |
---|
| 445 | case IMAGETHUMB_FIT_WIDTH : |
---|
[120] | 446 | $dest_image_width = $spec['width']; |
---|
[119] | 447 | $dest_image_height = $source_image_height * ($spec['width'] / $source_image_width); |
---|
| 448 | break; |
---|
| 449 | case IMAGETHUMB_FIT_HEIGHT : |
---|
[120] | 450 | $dest_image_height = $spec['height']; |
---|
[119] | 451 | $dest_image_width = $source_image_width * ($spec['height'] / $source_image_height); |
---|
| 452 | break; |
---|
| 453 | case IMAGETHUMB_FIT_LARGER : |
---|
[120] | 454 | if (($source_image_width * ($spec['height'] / $source_image_height)) <= $spec['width']) { |
---|
| 455 | // Height is larger. |
---|
| 456 | $dest_image_height = $spec['height']; |
---|
| 457 | $dest_image_width = $source_image_width * ($spec['height'] / $source_image_height); |
---|
[119] | 458 | } else { |
---|
[120] | 459 | // Width is larger. |
---|
| 460 | $dest_image_width = $spec['width']; |
---|
| 461 | $dest_image_height = $source_image_height * ($spec['width'] / $source_image_width); |
---|
[119] | 462 | } |
---|
| 463 | break; |
---|
| 464 | case IMAGETHUMB_STRETCH : |
---|
| 465 | $dest_image_width = $spec['width']; |
---|
| 466 | $dest_image_height = $spec['height']; |
---|
| 467 | break; |
---|
| 468 | case IMAGETHUMB_NO_SCALE : |
---|
| 469 | default : |
---|
| 470 | $dest_image_width = $source_image_width; |
---|
| 471 | $dest_image_height = $source_image_height; |
---|
| 472 | break; |
---|
| 473 | } |
---|
| 474 | |
---|
| 475 | // Create source image data in memory. |
---|
| 476 | switch ($source_image_type) { |
---|
| 477 | case IMAGETYPE_JPEG : |
---|
[120] | 478 | $source_image_resource = imagecreatefromjpeg($source_file); |
---|
[119] | 479 | break; |
---|
| 480 | case IMAGETYPE_PNG : |
---|
[120] | 481 | $source_image_resource = imagecreatefrompng($source_file); |
---|
[119] | 482 | break; |
---|
| 483 | case IMAGETYPE_GIF : |
---|
[120] | 484 | $source_image_resource = imagecreatefromgif($source_file); |
---|
[119] | 485 | break; |
---|
| 486 | case IMAGETYPE_WBMP : |
---|
[120] | 487 | $source_image_resource = imagecreatefromwbmp($source_file); |
---|
[119] | 488 | default : |
---|
| 489 | App::logMsg(sprintf('Source image type %s not supported.', $source_image_type), LOG_WARNING, __FILE__, __LINE__); |
---|
[120] | 490 | return 1; |
---|
[119] | 491 | break; |
---|
[1] | 492 | } |
---|
[120] | 493 | if (!$source_image_resource) { |
---|
[119] | 494 | App::logMsg(sprintf('Error creating %s image in memory from %s', $source_image_type, $source_file), LOG_WARNING, __FILE__, __LINE__); |
---|
[120] | 495 | return 1; |
---|
[119] | 496 | } |
---|
| 497 | |
---|
| 498 | // Create destination image data in memory. |
---|
[120] | 499 | $dest_image_resource = imagecreatetruecolor($dest_image_width, $dest_image_height); |
---|
[42] | 500 | |
---|
[119] | 501 | // Resample! |
---|
[120] | 502 | if (!imagecopyresampled($dest_image_resource, $source_image_resource, 0, 0, 0, 0, $dest_image_width, $dest_image_height, $source_image_width, $source_image_height)) { |
---|
[119] | 503 | App::logMsg(sprintf('Error resampling image %s', $source_file), LOG_WARNING, __FILE__, __LINE__); |
---|
[120] | 504 | return 1; |
---|
[1] | 505 | } |
---|
[120] | 506 | |
---|
| 507 | // Sharpen image using a custom filter matrix. |
---|
| 508 | if (phpversion() > '5.1' && true === $spec['sharpen'] && $spec['sharpen_value'] > 0) { |
---|
| 509 | $sharpen_value = round((((48 - 10) / (100 - 1)) * (100 - $spec['sharpen_value'])) + 10); |
---|
| 510 | imageconvolution($dest_image_resource, array(array(-1,-1,-1),array(-1,$sharpen_value,-1),array(-1,-1,-1)), ($sharpen_value - 8), 0); |
---|
| 511 | } |
---|
[42] | 512 | |
---|
[119] | 513 | // Save image. |
---|
| 514 | $return_val = true; |
---|
[120] | 515 | switch ($spec['dest_file_type']) { |
---|
[119] | 516 | case IMG_JPG : |
---|
[120] | 517 | imageinterlace($dest_image_resource, (true == $spec['progressive'] ? 1 : 0)); |
---|
| 518 | $return_val = imagejpeg($dest_image_resource, $dest_file, $spec['quality']); |
---|
[119] | 519 | break; |
---|
| 520 | case IMG_PNG : |
---|
[120] | 521 | $return_val = imagepng($dest_image_resource, $dest_file); |
---|
[119] | 522 | break; |
---|
| 523 | case IMG_GIF : |
---|
[120] | 524 | $return_val = imagegif($dest_image_resource, $dest_file); |
---|
[119] | 525 | break; |
---|
| 526 | case IMG_WBMP : |
---|
[120] | 527 | $return_val = imagewbmp($dest_image_resource, $dest_file); |
---|
[119] | 528 | break; |
---|
| 529 | default : |
---|
[120] | 530 | App::logMsg(sprintf('Destination image type %s not supported for image %s.', $spec['dest_file_type'], $dest_file), LOG_WARNING, __FILE__, __LINE__); |
---|
| 531 | return 1; |
---|
[119] | 532 | break; |
---|
| 533 | } |
---|
| 534 | |
---|
| 535 | if ($return_val) { |
---|
| 536 | // Success! |
---|
| 537 | // Make the thumbnail writable so the user can delete it over ftp without being 'apache'. |
---|
[120] | 538 | chmod($dest_file, $this->getParam('dest_file_perms')); |
---|
[119] | 539 | App::logMsg(sprintf('Successfully resized image %s', $dest_file), LOG_DEBUG, __FILE__, __LINE__); |
---|
[120] | 540 | return 0; |
---|
[1] | 541 | } else { |
---|
[119] | 542 | // An error occurred. |
---|
| 543 | App::logMsg(sprintf('Image %s failed resizing.', $dest_file), LOG_ERR, __FILE__, __LINE__); |
---|
[120] | 544 | return 1; |
---|
[1] | 545 | } |
---|
| 546 | } |
---|
| 547 | |
---|
| 548 | /** |
---|
| 549 | * Delete the thumbnails for the specified file name. |
---|
| 550 | * |
---|
| 551 | * @access public |
---|
| 552 | * @param string $file_name The file name to delete, with extention. |
---|
| 553 | * @return bool true on success, false on failure. |
---|
| 554 | */ |
---|
| 555 | function deleteThumbs($file_name) |
---|
| 556 | { |
---|
| 557 | // Ensure we have a source. |
---|
[119] | 558 | if ('' == $this->getParam('source_dir')) { |
---|
[1] | 559 | App::logMsg(sprintf('Source directory not set before processing.'), LOG_ERR, __FILE__, __LINE__); |
---|
| 560 | return false; |
---|
| 561 | } |
---|
[42] | 562 | |
---|
[119] | 563 | $return_val = 0; |
---|
| 564 | foreach ($this->image_specs as $spec) { |
---|
[120] | 565 | $dest_file = realpath(sprintf('%s/%s/%s.%s', $this->getParam('source_dir'), $spec['dest_dir'], substr($file_name, 0, strrpos($file_name, '.')), $spec['dest_file_extention'])); |
---|
[119] | 566 | if (file_exists($dest_file)) { |
---|
| 567 | if (!unlink($dest_file)) { |
---|
| 568 | $return_val++; |
---|
| 569 | App::logMsg(sprintf(_("Delete thumbs failed: %s"), $dest_file), LOG_WARNING, __FILE__, __LINE__); |
---|
[1] | 570 | } |
---|
| 571 | } |
---|
| 572 | } |
---|
[121] | 573 | $this->_raiseMsg(sprintf(_("The thumbnails for file %s have been deleted."), $file_name), MSG_SUCCESS, __FILE__, __LINE__); |
---|
[119] | 574 | return 0 === $return_val; |
---|
[1] | 575 | } |
---|
| 576 | |
---|
| 577 | /** |
---|
| 578 | * Delete the source image with the specified file name. |
---|
| 579 | * |
---|
| 580 | * @access public |
---|
| 581 | * @param string $file_name The file name to delete, with extention. |
---|
| 582 | * @return bool true on success, false on failure. |
---|
| 583 | */ |
---|
| 584 | function deleteOriginal($file_name) |
---|
| 585 | { |
---|
| 586 | // Ensure we have a source. |
---|
[119] | 587 | if ('' == $this->getParam('source_dir')) { |
---|
[1] | 588 | App::logMsg(sprintf('Source directory not set before processing.'), LOG_ERR, __FILE__, __LINE__); |
---|
| 589 | return false; |
---|
| 590 | } |
---|
[42] | 591 | |
---|
[119] | 592 | $source_file = realpath(sprintf('%s/%s', $this->getParam('source_dir'), $file_name)); |
---|
| 593 | if (!unlink($source_file)) { |
---|
| 594 | App::logMsg(sprintf(_("Delete original failed: %s"), $source_file), LOG_WARNING, __FILE__, __LINE__); |
---|
[1] | 595 | return false; |
---|
| 596 | } |
---|
[121] | 597 | $this->_raiseMsg(sprintf(_("The original file %s has been deleted."), $file_name), MSG_SUCCESS, __FILE__, __LINE__); |
---|
[1] | 598 | return true; |
---|
| 599 | } |
---|
[42] | 600 | |
---|
[1] | 601 | /** |
---|
| 602 | * Returns true if file exists. |
---|
| 603 | * |
---|
| 604 | * @access public |
---|
| 605 | * @param string $file_name The file name to test, with extention. |
---|
| 606 | * @return bool true on success, false on failure. |
---|
| 607 | */ |
---|
| 608 | function exists($file_name) |
---|
| 609 | { |
---|
| 610 | // Ensure we have a source. |
---|
[119] | 611 | if ('' == $this->getParam('source_dir')) { |
---|
[1] | 612 | App::logMsg(sprintf('Source directory not set before processing.'), LOG_ERR, __FILE__, __LINE__); |
---|
| 613 | return false; |
---|
| 614 | } |
---|
[42] | 615 | |
---|
[119] | 616 | $source_file = realpath(sprintf('%s/%s', $this->getParam('source_dir'), $file_name)); |
---|
| 617 | return file_exists($source_file); |
---|
[1] | 618 | } |
---|
[42] | 619 | |
---|
[1] | 620 | /** |
---|
| 621 | * Tests if extention of $file_name is in the array valid_file_extensions. |
---|
| 622 | * |
---|
| 623 | * @access public |
---|
| 624 | * @param string $file_name A file name. |
---|
| 625 | * @return bool True on success, false on failure. |
---|
| 626 | */ |
---|
[119] | 627 | function _validFileExtension($file_name) |
---|
[1] | 628 | { |
---|
| 629 | preg_match('/.*?\.(\w+)$/i', $file_name, $ext); |
---|
[121] | 630 | return !empty($ext) && in_array(strtolower($ext[1]), $this->getParam('valid_file_extensions')); |
---|
[1] | 631 | } |
---|
[42] | 632 | |
---|
[1] | 633 | /** |
---|
[119] | 634 | * Make directory for each specified thumbnail size, if it doesn't exist. |
---|
[1] | 635 | * |
---|
[119] | 636 | * @access public |
---|
| 637 | * @return bool true on success, false on failure. |
---|
| 638 | */ |
---|
| 639 | function _createDestDirs() |
---|
| 640 | { |
---|
| 641 | static $already_checked = false; |
---|
| 642 | |
---|
| 643 | if (!$already_checked) { |
---|
| 644 | // Ensure we have a source. |
---|
| 645 | if ('' == $this->getParam('source_dir')) { |
---|
| 646 | App::logMsg(sprintf('Source directory not set before creating destination directories.'), LOG_ERR, __FILE__, __LINE__); |
---|
| 647 | return false; |
---|
| 648 | } |
---|
| 649 | |
---|
| 650 | // Loop through specs and ensure all dirs are created. |
---|
| 651 | $return_val = 0; |
---|
| 652 | foreach ($this->image_specs as $spec) { |
---|
| 653 | if (!file_exists($this->getParam('source_dir') . '/' . $spec['dest_dir'])) { |
---|
| 654 | if (!mkdir($this->getParam('source_dir') . '/' . $spec['dest_dir'], $this->getParam('dest_dir_perms'))) { |
---|
| 655 | $return_val++; |
---|
| 656 | App::logMsg(sprintf('mkdir failure: %s', $this->getParam('source_dir') . '/' . $spec['dest_dir']), LOG_ERR, __FILE__, __LINE__); |
---|
| 657 | } |
---|
| 658 | } |
---|
| 659 | } |
---|
| 660 | |
---|
| 661 | // If > 0, there was a problem creating dest dirs. |
---|
| 662 | return 0 === $return_val; |
---|
| 663 | } |
---|
| 664 | |
---|
| 665 | $already_checked = true; |
---|
| 666 | } |
---|
| 667 | |
---|
| 668 | /** |
---|
| 669 | * An alias for App::raiseMsg that only sends messages configured by display_messages. |
---|
| 670 | * |
---|
[1] | 671 | * @access public |
---|
| 672 | * |
---|
| 673 | * @param string $message The text description of the message. |
---|
| 674 | * @param int $type The type of message: MSG_NOTICE, |
---|
| 675 | * MSG_SUCCESS, MSG_WARNING, or MSG_ERR. |
---|
| 676 | * @param string $file __FILE__. |
---|
| 677 | * @param string $line __LINE__. |
---|
| 678 | */ |
---|
[119] | 679 | function _raiseMsg($message, $type, $file, $line) |
---|
[1] | 680 | { |
---|
[119] | 681 | if ($this->getParam('display_messages') === true || (is_int($this->getParam('display_messages')) && $this->getParam('display_messages') & $type > 0)) { |
---|
[1] | 682 | App::raiseMsg($message, $type, $file, $line); |
---|
| 683 | } |
---|
| 684 | } |
---|
| 685 | |
---|
| 686 | } // End of class. |
---|
| 687 | ?> |
---|