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-rw-r--r--program/lib/Roundcube/rcube_image.php268
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diff --git a/program/lib/Roundcube/rcube_image.php b/program/lib/Roundcube/rcube_image.php
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+<?php
+
+/*
+ +-----------------------------------------------------------------------+
+ | program/include/rcube_image.php |
+ | |
+ | This file is part of the Roundcube Webmail client |
+ | Copyright (C) 2005-2012, The Roundcube Dev Team |
+ | Copyright (C) 2011-2012, Kolab Systems AG |
+ | |
+ | Licensed under the GNU General Public License version 3 or |
+ | any later version with exceptions for skins & plugins. |
+ | See the README file for a full license statement. |
+ | |
+ | PURPOSE: |
+ | Image resizer and converter |
+ | |
+ +-----------------------------------------------------------------------+
+ | Author: Thomas Bruederli <roundcube@gmail.com> |
+ | Author: Aleksander Machniak <alec@alec.pl> |
+ +-----------------------------------------------------------------------+
+*/
+
+/**
+ * Image resizer and converter
+ *
+ * @package Framework
+ * @subpackage Utils
+ */
+class rcube_image
+{
+ private $image_file;
+
+ const TYPE_GIF = 1;
+ const TYPE_JPG = 2;
+ const TYPE_PNG = 3;
+ const TYPE_TIF = 4;
+
+ public static $extensions = array(
+ self::TYPE_GIF => 'gif',
+ self::TYPE_JPG => 'jpg',
+ self::TYPE_PNG => 'png',
+ self::TYPE_TIF => 'tif',
+ );
+
+
+ function __construct($filename)
+ {
+ $this->image_file = $filename;
+ }
+
+ /**
+ * Get image properties.
+ *
+ * @return mixed Hash array with image props like type, width, height
+ */
+ public function props()
+ {
+ // use GD extension
+ if (function_exists('getimagesize') && ($imsize = @getimagesize($this->image_file))) {
+ $width = $imsize[0];
+ $height = $imsize[1];
+ $gd_type = $imsize['2'];
+ $type = image_type_to_extension($imsize['2'], false);
+ }
+
+ // use ImageMagick
+ if (!$type && ($data = $this->identify())) {
+ list($type, $width, $height) = $data;
+ }
+
+ if ($type) {
+ return array(
+ 'type' => $type,
+ 'gd_type' => $gd_type,
+ 'width' => $width,
+ 'height' => $height,
+ );
+ }
+ }
+
+ /**
+ * Resize image to a given size
+ *
+ * @param int $size Max width/height size
+ * @param string $filename Output filename
+ * @param boolean $browser_compat Convert to image type displayable by any browser
+ *
+ * @return mixed Output type on success, False on failure
+ */
+ public function resize($size, $filename = null, $browser_compat = false)
+ {
+ $result = false;
+ $rcube = rcube::get_instance();
+ $convert = $rcube->config->get('im_convert_path', false);
+ $props = $this->props();
+
+ if (!$filename) {
+ $filename = $this->image_file;
+ }
+
+ // use Imagemagick
+ if ($convert) {
+ $p['out'] = $filename;
+ $p['in'] = $this->image_file;
+ $p['size'] = $size.'x'.$size;
+ $type = $props['type'];
+
+ if (!$type && ($data = $this->identify())) {
+ $type = $data[0];
+ }
+
+ $type = strtr($type, array("jpeg" => "jpg", "tiff" => "tif", "ps" => "eps", "ept" => "eps"));
+ $p['intype'] = $type;
+
+ // convert to an image format every browser can display
+ if ($browser_compat && !in_array($type, array('jpg','gif','png'))) {
+ $type = 'jpg';
+ }
+
+ $p += array('type' => $type, 'types' => "bmp,eps,gif,jp2,jpg,png,svg,tif", 'quality' => 75);
+ $p['-opts'] = array('-resize' => $p['size'].'>');
+
+ if (in_array($type, explode(',', $p['types']))) { // Valid type?
+ $result = rcube::exec($convert . ' 2>&1 -flatten -auto-orient -colorspace RGB -quality {quality} {-opts} {intype}:{in} {type}:{out}', $p);
+ }
+
+ if ($result === '') {
+ return $type;
+ }
+ }
+
+ // use GD extension
+ $gd_types = array(IMAGETYPE_JPEG, IMAGETYPE_GIF, IMAGETYPE_PNG);
+ if ($props['gd_type'] && in_array($props['gd_type'], $gd_types)) {
+ if ($props['gd_type'] == IMAGETYPE_JPEG) {
+ $image = imagecreatefromjpeg($this->image_file);
+ }
+ elseif($props['gd_type'] == IMAGETYPE_GIF) {
+ $image = imagecreatefromgif($this->image_file);
+ }
+ elseif($props['gd_type'] == IMAGETYPE_PNG) {
+ $image = imagecreatefrompng($this->image_file);
+ }
+
+ $scale = $size / max($props['width'], $props['height']);
+ $width = $props['width'] * $scale;
+ $height = $props['height'] * $scale;
+
+ $new_image = imagecreatetruecolor($width, $height);
+
+ // Fix transparency of gif/png image
+ if ($props['gd_type'] != IMAGETYPE_JPEG) {
+ imagealphablending($new_image, false);
+ imagesavealpha($new_image, true);
+ $transparent = imagecolorallocatealpha($new_image, 255, 255, 255, 127);
+ imagefilledrectangle($new_image, 0, 0, $width, $height, $transparent);
+ }
+
+ imagecopyresampled($new_image, $image, 0, 0, 0, 0, $width, $height, $props['width'], $props['height']);
+ $image = $new_image;
+
+ if ($props['gd_type'] == IMAGETYPE_JPEG) {
+ $result = imagejpeg($image, $filename, 75);
+ $type = 'jpg';
+ }
+ elseif($props['gd_type'] == IMAGETYPE_GIF) {
+ $result = imagegif($image, $filename);
+ $type = 'gid';
+ }
+ elseif($props['gd_type'] == IMAGETYPE_PNG) {
+ $result = imagepng($image, $filename, 6, PNG_ALL_FILTERS);
+ $type = 'png';
+ }
+
+ if ($result) {
+ return $type;
+ }
+ }
+
+ // @TODO: print error to the log?
+ return false;
+ }
+
+ /**
+ * Convert image to a given type
+ *
+ * @param int $type Destination file type (see class constants)
+ * @param string $filename Output filename (if empty, original file will be used
+ * and filename extension will be modified)
+ *
+ * @return bool True on success, False on failure
+ */
+ public function convert($type, $filename = null)
+ {
+ $rcube = rcube::get_instance();
+ $convert = $rcube->config->get('im_convert_path', false);
+
+ if (!$filename) {
+ $filename = $this->image_file;
+
+ // modify extension
+ if ($extension = self::$extensions[$type]) {
+ $filename = preg_replace('/\.[^.]+$/', '', $filename) . '.' . $extension;
+ }
+ }
+
+ // use ImageMagick
+ if ($convert) {
+ $p['in'] = $this->image_file;
+ $p['out'] = $filename;
+ $p['type'] = self::$extensions[$type];
+
+ $result = rcube::exec($convert . ' 2>&1 -colorspace RGB -quality 75 {in} {type}:{out}', $p);
+
+ if ($result === '') {
+ return true;
+ }
+ }
+
+ // use GD extension (TIFF isn't supported)
+ $props = $this->props();
+ $gd_types = array(IMAGETYPE_JPEG, IMAGETYPE_GIF, IMAGETYPE_PNG);
+
+ if ($props['gd_type'] && in_array($props['gd_type'], $gd_types)) {
+ if ($props['gd_type'] == IMAGETYPE_JPEG) {
+ $image = imagecreatefromjpeg($this->image_file);
+ }
+ else if ($props['gd_type'] == IMAGETYPE_GIF) {
+ $image = imagecreatefromgif($this->image_file);
+ }
+ else if ($props['gd_type'] == IMAGETYPE_PNG) {
+ $image = imagecreatefrompng($this->image_file);
+ }
+
+ if ($type == self::TYPE_JPG) {
+ $result = imagejpeg($image, $filename, 75);
+ }
+ else if ($type == self::TYPE_GIF) {
+ $result = imagegif($image, $filename);
+ }
+ else if ($type == self::TYPE_PNG) {
+ $result = imagepng($image, $filename, 6, PNG_ALL_FILTERS);
+ }
+ }
+
+ // @TODO: print error to the log?
+ return false;
+ }
+
+ /**
+ * Identify command handler.
+ */
+ private function identify()
+ {
+ $rcube = rcube::get_instance();
+
+ if ($cmd = $rcube->config->get('im_identify_path')) {
+ $args = array('in' => $this->image_file, 'format' => "%m %[fx:w] %[fx:h]");
+ $id = rcube::exec($cmd. ' 2>/dev/null -format {format} {in}', $args);
+
+ if ($id) {
+ return explode(' ', strtolower($id));
+ }
+ }
+ }
+
+}
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