| commit | author | age | ||
| a71a97 | 1 | <?php |
| A | 2 | |
| 3 | /* | |
| 4 | +-----------------------------------------------------------------------+ | |
| 5 | | program/include/rcube_image.php | | |
| 6 | | | | |
| 7 | | This file is part of the Roundcube Webmail client | | |
| 8 | | Copyright (C) 2005-2012, The Roundcube Dev Team | | |
| 9 | | Copyright (C) 2011-2012, Kolab Systems AG | | |
| 10 | | | | |
| 11 | | Licensed under the GNU General Public License version 3 or | | |
| 12 | | any later version with exceptions for skins & plugins. | | |
| 13 | | See the README file for a full license statement. | | |
| 14 | | | | |
| 15 | | PURPOSE: | | |
| 19cc5b | 16 | | Image resizer and converter | |
| a71a97 | 17 | | | |
| A | 18 | +-----------------------------------------------------------------------+ |
| 19 | | Author: Thomas Bruederli <roundcube@gmail.com> | | |
| 20 | | Author: Aleksander Machniak <alec@alec.pl> | | |
| 21 | +-----------------------------------------------------------------------+ | |
| 22 | */ | |
| 23 | ||
| 24 | class rcube_image | |
| 25 | { | |
| 26 | private $image_file; | |
| 19cc5b | 27 | |
| AM | 28 | const TYPE_GIF = 1; |
| 29 | const TYPE_JPG = 2; | |
| 30 | const TYPE_PNG = 3; | |
| 31 | const TYPE_TIF = 4; | |
| 32 | ||
| 33 | public static $extensions = array( | |
| 34 | self::TYPE_GIF => 'gif', | |
| 35 | self::TYPE_JPG => 'jpg', | |
| 36 | self::TYPE_PNG => 'png', | |
| 37 | self::TYPE_TIF => 'tif', | |
| 38 | ); | |
| 39 | ||
| a71a97 | 40 | |
| A | 41 | function __construct($filename) |
| 42 | { | |
| 43 | $this->image_file = $filename; | |
| 44 | } | |
| 45 | ||
| 46 | /** | |
| 47 | * Get image properties. | |
| 48 | * | |
| 49 | * @return mixed Hash array with image props like type, width, height | |
| 50 | */ | |
| 51 | public function props() | |
| 52 | { | |
| f5a7e1 | 53 | // use GD extension |
| a71a97 | 54 | if (function_exists('getimagesize') && ($imsize = @getimagesize($this->image_file))) { |
| A | 55 | $width = $imsize[0]; |
| 56 | $height = $imsize[1]; | |
| 57 | $gd_type = $imsize['2']; | |
| 58 | $type = image_type_to_extension($imsize['2'], false); | |
| 59 | } | |
| 60 | ||
| f5a7e1 | 61 | // use ImageMagick |
| A | 62 | if (!$type && ($data = $this->identify())) { |
| 63 | list($type, $width, $height) = $data; | |
| a71a97 | 64 | } |
| A | 65 | |
| 66 | if ($type) { | |
| 67 | return array( | |
| 68 | 'type' => $type, | |
| 69 | 'gd_type' => $gd_type, | |
| 70 | 'width' => $width, | |
| 71 | 'height' => $height, | |
| 72 | ); | |
| 73 | } | |
| 74 | } | |
| 75 | ||
| 76 | /** | |
| 77 | * Resize image to a given size | |
| 78 | * | |
| 79 | * @param int $size Max width/height size | |
| 80 | * @param string $filename Output filename | |
| 81 | * | |
| 19cc5b | 82 | * @return bool True on success, False on failure |
| a71a97 | 83 | */ |
| A | 84 | public function resize($size, $filename = null) |
| 85 | { | |
| be98df | 86 | $result = false; |
| A | 87 | $rcube = rcube::get_instance(); |
| b1b808 | 88 | $convert = $rcube->config->get('im_convert_path', false); |
| be98df | 89 | $props = $this->props(); |
| a71a97 | 90 | |
| A | 91 | if (!$filename) { |
| 92 | $filename = $this->image_file; | |
| 93 | } | |
| 94 | ||
| 95 | // use Imagemagick | |
| 96 | if ($convert) { | |
| 97 | $p['out'] = $filename; | |
| 98 | $p['in'] = $this->image_file; | |
| 99 | $p['size'] = $size.'x'.$size; | |
| f5a7e1 | 100 | $type = $props['type']; |
| a71a97 | 101 | |
| f5a7e1 | 102 | if (!$type && ($data = $this->identify())) { |
| A | 103 | $type = $data[0]; |
| a71a97 | 104 | } |
| A | 105 | |
| 106 | $type = strtr($type, array("jpeg" => "jpg", "tiff" => "tif", "ps" => "eps", "ept" => "eps")); | |
| 107 | $p += array('type' => $type, 'types' => "bmp,eps,gif,jp2,jpg,png,svg,tif", 'quality' => 75); | |
| 108 | $p['-opts'] = array('-resize' => $size.'>'); | |
| 109 | ||
| 110 | if (in_array($type, explode(',', $p['types']))) { // Valid type? | |
| 19cc5b | 111 | $result = rcube::exec($convert . ' 2>&1 -flatten -auto-orient -colorspace RGB -quality {quality} {-opts} {in} {type}:{out}', $p); |
| a71a97 | 112 | } |
| A | 113 | |
| 19cc5b | 114 | if ($result === '') { |
| a71a97 | 115 | return true; |
| A | 116 | } |
| 117 | } | |
| 118 | ||
| 119 | // use GD extension | |
| 120 | $gd_types = array(IMAGETYPE_JPEG, IMAGETYPE_GIF, IMAGETYPE_PNG); | |
| 121 | if ($props['gd_type'] && in_array($props['gd_type'], $gd_types)) { | |
| 122 | if ($props['gd_type'] == IMAGETYPE_JPEG) { | |
| 123 | $image = imagecreatefromjpeg($this->image_file); | |
| 124 | } | |
| 125 | elseif($props['gd_type'] == IMAGETYPE_GIF) { | |
| 126 | $image = imagecreatefromgif($this->image_file); | |
| 127 | } | |
| 128 | elseif($props['gd_type'] == IMAGETYPE_PNG) { | |
| 129 | $image = imagecreatefrompng($this->image_file); | |
| 130 | } | |
| 131 | ||
| 132 | $scale = $size / max($props['width'], $props['height']); | |
| 133 | $width = $props['width'] * $scale; | |
| 134 | $height = $props['height'] * $scale; | |
| 135 | ||
| 136 | $new_image = imagecreatetruecolor($width, $height); | |
| 137 | ||
| 138 | // Fix transparency of gif/png image | |
| 139 | if ($props['gd_type'] != IMAGETYPE_JPEG) { | |
| 140 | imagealphablending($new_image, false); | |
| 141 | imagesavealpha($new_image, true); | |
| 142 | $transparent = imagecolorallocatealpha($new_image, 255, 255, 255, 127); | |
| 143 | imagefilledrectangle($new_image, 0, 0, $width, $height, $transparent); | |
| 144 | } | |
| 145 | ||
| 146 | imagecopyresampled($new_image, $image, 0, 0, 0, 0, $width, $height, $props['width'], $props['height']); | |
| 147 | $image = $new_image; | |
| 148 | ||
| 149 | if ($props['gd_type'] == IMAGETYPE_JPEG) { | |
| 150 | $result = imagejpeg($image, $filename, 75); | |
| 151 | } | |
| 152 | elseif($props['gd_type'] == IMAGETYPE_GIF) { | |
| 153 | $result = imagegif($image, $filename); | |
| 154 | } | |
| 155 | elseif($props['gd_type'] == IMAGETYPE_PNG) { | |
| 156 | $result = imagepng($image, $filename, 6, PNG_ALL_FILTERS); | |
| 157 | } | |
| 158 | ||
| 159 | if ($result) { | |
| 160 | return true; | |
| 161 | } | |
| 162 | } | |
| 163 | ||
| 19cc5b | 164 | // @TODO: print error to the log? |
| AM | 165 | return false; |
| 166 | } | |
| 167 | ||
| 168 | /** | |
| 169 | * Convert image to a given type | |
| 170 | * | |
| 171 | * @param int $type Destination file type (see class constants) | |
| 172 | * @param string $filename Output filename (if empty, original file will be used | |
| 173 | * and filename extension will be modified) | |
| 174 | * | |
| 175 | * @return bool True on success, False on failure | |
| 176 | */ | |
| 177 | public function convert($type, $filename = null) | |
| 178 | { | |
| 179 | $rcube = rcube::get_instance(); | |
| 180 | $convert = $rcube->config->get('im_convert_path', false); | |
| 181 | ||
| 182 | if (!$filename) { | |
| 183 | $filename = $this->image_file; | |
| 184 | ||
| 185 | // modify extension | |
| 186 | if ($extension = self::$extensions[$type]) { | |
| 187 | $filename = preg_replace('/\.[^.]+$/', '', $filename) . '.' . $extension; | |
| 188 | } | |
| 189 | } | |
| 190 | ||
| 191 | // use ImageMagick | |
| 192 | if ($convert) { | |
| 193 | $p['in'] = $this->image_file; | |
| 194 | $p['out'] = $filename; | |
| 195 | $p['type'] = self::$extensions[$type]; | |
| 196 | ||
| 197 | $result = rcube::exec($convert . ' 2>&1 -colorspace RGB -quality 75 {in} {type}:{out}', $p); | |
| 198 | ||
| 199 | if ($result === '') { | |
| 200 | return true; | |
| 201 | } | |
| 202 | } | |
| 203 | ||
| 204 | // use GD extension (TIFF isn't supported) | |
| 205 | $props = $this->props(); | |
| 206 | $gd_types = array(IMAGETYPE_JPEG, IMAGETYPE_GIF, IMAGETYPE_PNG); | |
| 207 | ||
| 208 | if ($props['gd_type'] && in_array($props['gd_type'], $gd_types)) { | |
| 209 | if ($props['gd_type'] == IMAGETYPE_JPEG) { | |
| 210 | $image = imagecreatefromjpeg($this->image_file); | |
| 211 | } | |
| 212 | else if ($props['gd_type'] == IMAGETYPE_GIF) { | |
| 213 | $image = imagecreatefromgif($this->image_file); | |
| 214 | } | |
| 215 | else if ($props['gd_type'] == IMAGETYPE_PNG) { | |
| 216 | $image = imagecreatefrompng($this->image_file); | |
| 217 | } | |
| 218 | ||
| 219 | if ($type == self::TYPE_JPG) { | |
| 220 | $result = imagejpeg($image, $filename, 75); | |
| 221 | } | |
| 222 | else if ($type == self::TYPE_GIF) { | |
| 223 | $result = imagegif($image, $filename); | |
| 224 | } | |
| 225 | else if ($type == self::TYPE_PNG) { | |
| 226 | $result = imagepng($image, $filename, 6, PNG_ALL_FILTERS); | |
| 227 | } | |
| 228 | } | |
| a71a97 | 229 | |
| A | 230 | // @TODO: print error to the log? |
| 231 | return false; | |
| 232 | } | |
| 233 | ||
| f5a7e1 | 234 | /** |
| A | 235 | * Identify command handler. |
| 236 | */ | |
| 237 | private function identify() | |
| 238 | { | |
| be98df | 239 | $rcube = rcube::get_instance(); |
| f5a7e1 | 240 | |
| be98df | 241 | if ($cmd = $rcube->config->get('im_identify_path')) { |
| f5a7e1 | 242 | $args = array('in' => $this->image_file, 'format' => "%m %[fx:w] %[fx:h]"); |
| be98df | 243 | $id = rcube::exec($cmd. ' 2>/dev/null -format {format} {in}', $args); |
| f5a7e1 | 244 | |
| A | 245 | if ($id) { |
| 246 | return explode(' ', strtolower($id)); | |
| 247 | } | |
| 248 | } | |
| 249 | } | |
| 19cc5b | 250 | |
| a71a97 | 251 | } |
