#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see .
class Thumbnail {
var $src_image = array();
var $dst_image = array();
function __construct($src_file, $src_type) {
if (file_exists($src_file) === true) {
$this->src_image['file'] = $src_file;
$this->src_image['type'] = $src_type;
} else {
return __('File don\'t exists');
}
switch ($this->src_image['type']) {
case 'image/jpeg':
$this->src_image['type'] = 'image/jpeg';
$this->src_image['extension'] = 'jpg';
$this->img = imagecreatefromjpeg($this->src_image['file']);
break;
case 'image/jpeg':
$this->src_image['extension'] = 'jpg';
$this->img = imagecreatefromjpeg($this->src_image['file']);
break;
case 'image/png':
$this->src_image['extension'] = 'png';
$this->img = imagecreatefrompng($this->src_image['file']);
break;
case 'image/gif':
$this->src_image['extension'] = 'gif';
$this->img = imagecreatefromgif($this->src_image['file']);
break;
default;
return __('Format not supported');
}
$size = getimagesize($this->src_image['file']);
$this->src_image['width'] = $size[0];
$this->src_image['height'] = $size[1];
}
function __destroy() {
imagedestroy($this->img);
imagedestroy($this->thumb);
}
function do_thumbnail($dst_width = null, $dst_height = null) {
if (isset($this->thumb)) unset($this->thumb);
if (($dst_width === null) and ($dst_height === null)) {
$this->dst_image['width'] = $this->src_image['width'];
$this->dst_image['height'] = $this->src_image['height'];
} else {
if (($dst_width > 0) and ($dst_height > 0)) {
$this->dst_image['width'] = $dst_width;
$this->dst_image['height'] = $dst_height;
} else if (($dst_width > 0) and ($dst_height === null)) {
$this->dst_image['width'] = $dst_width;
$this->scale(1);
} else if (($dst_width === null) and ($dst_height > 0)) {
$this->dst_image['height'] = $dst_height;
$this->scale(2);
} else {
return __('Bad properties.');
}
}
$this->thumb = imagecreatetruecolor($this->dst_image['width'], $this->dst_image['height']);
if ($this->src_image['type'] == 'image/png' || $this->src_image['type'] == 'image/gif') {
imagealphablending($this->thumb, false);
imagesavealpha($this->thumb,true);
$transparent = imagecolorallocatealpha($this->thumb, 255, 255, 255, 127);
imagefilledrectangle($this->thumb, 0, 0, $this->dst_image['width'], $this->dst_image['height'], $transparent);
} else {
$white = imagecolorallocate($this->thumb, 255, 255, 255);
imagefill($this->thumb, 0, 0, $white);
}
imagecopyresampled($this->thumb, $this->img, 0, 0, 0, 0, $this->dst_image['width'], $this->dst_image['height'], $this->src_image['width'], $this->src_image['height']);
return $this->thumb;
}
function save($dst_file, $dst_dir = '', $thumb = null, $use_prefix = 0, $use_sufix = 0) {
if ($thumb !== null) $this->thumb = $thumb;
if ($use_prefix > 0) $prefix = substr(md5(rand()), 0, $use_prefix) . '_';
if ($use_sufix > 0) $sufix = '_' . substr(md5(rand()), 0, $use_sufix);
$this->dst_image['file'] = $dst_dir . $prefix . $dst_file . $sufix . '.' . $this->src_image['extension'];
if (file_exists($this->dst_image['file']) === true) {
if (($use_prefix > 0) || ($use_sufix > 0)) {
$this->save($dst_file, $this->thumb, $use_prefix, $use_sufix);
} else {
return __('Image exists');
}
}
switch ($this->src_image['type']) {
case 'image/jpeg':
imagejpeg($this->thumb, $this->dst_image['file'], 100);
break;
case 'image/png':
imagepng($this->thumb, $this->dst_image['file']);
break;
case 'image/gif':
imagegif($this->thumb, $this->dst_image['file']);
}
return true;
}
function show($thumb = null) {
if ($thumb !== null) $this->thumb = $thumb;
switch ($this->src_image['type']) {
case 'image/jpeg':
@ header('content-type: image/jpeg');
imagejpeg($this->thumb, null, 100);
break;
case 'image/png':
@ header('content-type: image/png');
imagepng($this->thumb);
break;
case 'image/gif':
@ header('content-type: image/gif');
imagegif($this->thumb);
}
return true;
}
function scale($scale_type) {
if ($scale_type == 1) {
$this->dst_image['height'] = round($this->src_image['height'] / ($this->src_image['width'] / $this->dst_image['width']));
} else if ($scale_type == 2) {
$this->dst_image['width'] = round($this->src_image['width'] / ($this->src_image['height'] / $this->dst_image['height']));
}
}
/*function get_attribs() {
echo '$this->src_image:';
var_dump($this->src_image);
echo '
$this->dst_image:';
var_dump($this->dst_image);
echo '
';
}*/
}