You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
272 lines
9.1 KiB
PHP
272 lines
9.1 KiB
PHP
<?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 $type;
|
|
}
|
|
}
|
|
|
|
// use GD extension
|
|
if ($props['gd_type']) {
|
|
if ($props['gd_type'] == IMAGETYPE_JPEG && function_exists('imagecreatefromjpeg')) {
|
|
$image = imagecreatefromjpeg($this->image_file);
|
|
}
|
|
else if($props['gd_type'] == IMAGETYPE_GIF && function_exists('imagecreatefromgif')) {
|
|
$image = imagecreatefromgif($this->image_file);
|
|
}
|
|
else if($props['gd_type'] == IMAGETYPE_PNG && function_exists('imagecreatefrompng')) {
|
|
$image = imagecreatefrompng($this->image_file);
|
|
}
|
|
else {
|
|
// @TODO: print error to the log?
|
|
return false;
|
|
}
|
|
|
|
$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 = $this->props();
|
|
|
|
if ($props['gd_type']) {
|
|
if ($props['gd_type'] == IMAGETYPE_JPEG && function_exists('imagecreatefromjpeg')) {
|
|
$image = imagecreatefromjpeg($this->image_file);
|
|
}
|
|
else if ($props['gd_type'] == IMAGETYPE_GIF && function_exists('imagecreatefromgif')) {
|
|
$image = imagecreatefromgif($this->image_file);
|
|
}
|
|
else if ($props['gd_type'] == IMAGETYPE_PNG && function_exists('imagecreatefrompng')) {
|
|
$image = imagecreatefrompng($this->image_file);
|
|
}
|
|
else {
|
|
// @TODO: print error to the log?
|
|
return false;
|
|
}
|
|
|
|
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));
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|