- Image resize with GD extension (#1488383)
alecpl
12 years ago
parent
d1e3430bfa
commit
a71a97fa49
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<?php
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/*
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+-----------------------------------------------------------------------+
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| program/include/rcube_image.php |
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| |
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| This file is part of the Roundcube Webmail client |
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| Copyright (C) 2005-2012, The Roundcube Dev Team |
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| Copyright (C) 2011-2012, Kolab Systems AG |
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| |
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| Licensed under the GNU General Public License version 3 or |
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| any later version with exceptions for skins & plugins. |
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| See the README file for a full license statement. |
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| |
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| PURPOSE: |
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| Image resizer |
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| |
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+-----------------------------------------------------------------------+
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| Author: Thomas Bruederli <roundcube@gmail.com> |
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| Author: Aleksander Machniak <alec@alec.pl> |
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+-----------------------------------------------------------------------+
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$Id$
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*/
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class rcube_image
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{
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private $image_file;
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function __construct($filename)
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{
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$this->image_file = $filename;
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}
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/**
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* Get image properties.
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*
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* @return mixed Hash array with image props like type, width, height
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*/
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public function props()
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{
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$rcmail = rcmail::get_instance();
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if (function_exists('getimagesize') && ($imsize = @getimagesize($this->image_file))) {
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$width = $imsize[0];
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$height = $imsize[1];
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$gd_type = $imsize['2'];
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$type = image_type_to_extension($imsize['2'], false);
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}
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if (!$type && ($cmd = $rcmail->config->get('im_identify_path', false))) {
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$id = rcmail::exec($cmd. ' 2>/dev/null {in}', array('in' => $this->image_file));
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list(, $type, $size) = explode(' ', strtolower($id));
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if ($size) {
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list($width, $height) = explode('x', $size);
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}
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}
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if ($type) {
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return array(
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'type' => $type,
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'gd_type' => $gd_type,
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'width' => $width,
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'height' => $height,
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);
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}
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}
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/**
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* Resize image to a given size
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*
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* @param int $size Max width/height size
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* @param string $filename Output filename
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*
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* @return Success of convert as true/false
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*/
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public function resize($size, $filename = null)
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{
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$result = false;
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$rcmail = rcmail::get_instance();
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$convert = $rcmail->config->get('im_convert_path', false);
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$identify = $rcmail->config->get('im_identify_path', false);
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$props = $this->props();
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if (!$filename) {
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$filename = $this->image_file;
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}
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// use Imagemagick
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if ($convert) {
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$p['out'] = $filename;
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$p['in'] = $this->image_file;
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$p['size'] = $size.'x'.$size;
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$p['type'] = $type = $props['type'];
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if (!$type) {
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list(, $p['type']) = explode(' ', strtolower(rcmail::exec($identify . ' 2>/dev/null {in}', $p))); // for things like eps
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}
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$type = strtr($type, array("jpeg" => "jpg", "tiff" => "tif", "ps" => "eps", "ept" => "eps"));
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$p += array('type' => $type, 'types' => "bmp,eps,gif,jp2,jpg,png,svg,tif", 'quality' => 75);
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$p['-opts'] = array('-resize' => $size.'>');
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if (in_array($type, explode(',', $p['types']))) { // Valid type?
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$result = rcmail::exec($convert . ' 2>&1 -flatten -auto-orient -colorspace RGB -quality {quality} {-opts} {in} {type}:{out}', $p) === '';
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}
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if ($result) {
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return true;
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}
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}
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// use GD extension
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$gd_types = array(IMAGETYPE_JPEG, IMAGETYPE_GIF, IMAGETYPE_PNG);
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if ($props['gd_type'] && in_array($props['gd_type'], $gd_types)) {
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if ($props['gd_type'] == IMAGETYPE_JPEG) {
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$image = imagecreatefromjpeg($this->image_file);
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}
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elseif($props['gd_type'] == IMAGETYPE_GIF) {
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$image = imagecreatefromgif($this->image_file);
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}
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elseif($props['gd_type'] == IMAGETYPE_PNG) {
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$image = imagecreatefrompng($this->image_file);
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}
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$scale = $size / max($props['width'], $props['height']);
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$width = $props['width'] * $scale;
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$height = $props['height'] * $scale;
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$new_image = imagecreatetruecolor($width, $height);
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// Fix transparency of gif/png image
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if ($props['gd_type'] != IMAGETYPE_JPEG) {
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imagealphablending($new_image, false);
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imagesavealpha($new_image, true);
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$transparent = imagecolorallocatealpha($new_image, 255, 255, 255, 127);
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imagefilledrectangle($new_image, 0, 0, $width, $height, $transparent);
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}
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imagecopyresampled($new_image, $image, 0, 0, 0, 0, $width, $height, $props['width'], $props['height']);
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$image = $new_image;
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if ($props['gd_type'] == IMAGETYPE_JPEG) {
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$result = imagejpeg($image, $filename, 75);
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}
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elseif($props['gd_type'] == IMAGETYPE_GIF) {
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$result = imagegif($image, $filename);
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}
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elseif($props['gd_type'] == IMAGETYPE_PNG) {
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$result = imagepng($image, $filename, 6, PNG_ALL_FILTERS);
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}
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if ($result) {
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return true;
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}
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}
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// @TODO: print error to the log?
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return false;
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}
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}
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