98f013725a
bug:2496 Imagick library (class version) is not detected properly on some servers git-svn-id: http://piwigo.org/svn/branches/2.3@12582 68402e56-0260-453c-a942-63ccdbb3a9ee
625 lines
No EOL
16 KiB
PHP
625 lines
No EOL
16 KiB
PHP
<?php
|
|
// +-----------------------------------------------------------------------+
|
|
// | Piwigo - a PHP based photo gallery |
|
|
// +-----------------------------------------------------------------------+
|
|
// | Copyright(C) 2008-2011 Piwigo Team http://piwigo.org |
|
|
// | Copyright(C) 2003-2008 PhpWebGallery Team http://phpwebgallery.net |
|
|
// | Copyright(C) 2002-2003 Pierrick LE GALL http://le-gall.net/pierrick |
|
|
// +-----------------------------------------------------------------------+
|
|
// | This program is free software; you can redistribute it and/or modify |
|
|
// | it under the terms of the GNU General Public License as published by |
|
|
// | the Free Software Foundation |
|
|
// | |
|
|
// | 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 |
|
|
// | General Public License for more details. |
|
|
// | |
|
|
// | You should have received a copy of the GNU General Public License |
|
|
// | along with this program; if not, write to the Free Software |
|
|
// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
|
|
// | USA. |
|
|
// +-----------------------------------------------------------------------+
|
|
|
|
// +-----------------------------------------------------------------------+
|
|
// | Image Interface |
|
|
// +-----------------------------------------------------------------------+
|
|
|
|
// Define all needed methods for image class
|
|
interface imageInterface
|
|
{
|
|
function get_width();
|
|
|
|
function get_height();
|
|
|
|
function set_compression_quality($quality);
|
|
|
|
function crop($width, $height, $x, $y);
|
|
|
|
function strip();
|
|
|
|
function rotate($rotation);
|
|
|
|
function resize($width, $height);
|
|
|
|
function write($destination_filepath);
|
|
}
|
|
|
|
// +-----------------------------------------------------------------------+
|
|
// | Main Image Class |
|
|
// +-----------------------------------------------------------------------+
|
|
|
|
class pwg_image
|
|
{
|
|
var $image;
|
|
var $library = '';
|
|
var $source_filepath = '';
|
|
|
|
function __construct($source_filepath, $library=null)
|
|
{
|
|
$this->source_filepath = $source_filepath;
|
|
|
|
trigger_action('load_image_library', array(&$this) );
|
|
|
|
if (is_object($this->image))
|
|
{
|
|
return; // A plugin may have load its own library
|
|
}
|
|
|
|
$extension = strtolower(get_extension($source_filepath));
|
|
|
|
if (!in_array($extension, array('jpg', 'jpeg', 'png', 'gif')))
|
|
{
|
|
die('[Image] unsupported file extension');
|
|
}
|
|
|
|
if (!($this->library = self::get_library($library, $extension)))
|
|
{
|
|
die('No image library available on your server.');
|
|
}
|
|
|
|
$class = 'image_'.$this->library;
|
|
$this->image = new $class($source_filepath);
|
|
}
|
|
|
|
// Unknow methods will be redirected to image object
|
|
function __call($method, $arguments)
|
|
{
|
|
return call_user_func_array(array($this->image, $method), $arguments);
|
|
}
|
|
|
|
// Piwigo resize function
|
|
function pwg_resize($destination_filepath, $max_width, $max_height, $quality, $automatic_rotation=true, $strip_metadata=false, $crop=false, $follow_orientation=true)
|
|
{
|
|
$starttime = get_moment();
|
|
|
|
// width/height
|
|
$source_width = $this->image->get_width();
|
|
$source_height = $this->image->get_height();
|
|
|
|
// Crop image
|
|
if ($crop)
|
|
{
|
|
$x = 0;
|
|
$y = 0;
|
|
|
|
if ($source_width < $source_height and $follow_orientation)
|
|
{
|
|
list($max_width, $max_height) = array($max_height, $max_width);
|
|
}
|
|
|
|
$img_ratio = $source_width / $source_height;
|
|
$dest_ratio = $max_width / $max_height;
|
|
|
|
if($dest_ratio > $img_ratio)
|
|
{
|
|
$destHeight = round($source_width * $max_height / $max_width);
|
|
$y = round(($source_height - $destHeight) / 2 );
|
|
$source_height = $destHeight;
|
|
}
|
|
elseif ($dest_ratio < $img_ratio)
|
|
{
|
|
$destWidth = round($source_height * $max_width / $max_height);
|
|
$x = round(($source_width - $destWidth) / 2 );
|
|
$source_width = $destWidth;
|
|
}
|
|
|
|
$this->image->crop($source_width, $source_height, $x, $y);
|
|
}
|
|
|
|
$rotation = null;
|
|
if ($automatic_rotation)
|
|
{
|
|
$rotation = self::get_rotation_angle($this->source_filepath);
|
|
}
|
|
$resize_dimensions = self::get_resize_dimensions($source_width, $source_height, $max_width, $max_height, $rotation);
|
|
|
|
// testing on height is useless in theory: if width is unchanged, there
|
|
// should be no resize, because width/height ratio is not modified.
|
|
if ($resize_dimensions['width'] == $source_width and $resize_dimensions['height'] == $source_height)
|
|
{
|
|
// the image doesn't need any resize! We just copy it to the destination
|
|
copy($this->source_filepath, $destination_filepath);
|
|
return $this->get_resize_result($destination_filepath, $resize_dimensions['width'], $resize_dimensions['height'], $starttime);
|
|
}
|
|
|
|
$this->image->set_compression_quality($quality);
|
|
|
|
if ($strip_metadata)
|
|
{
|
|
// we save a few kilobytes. For example a thumbnail with metadata weights 25KB, without metadata 7KB.
|
|
$this->image->strip();
|
|
}
|
|
|
|
$this->image->resize($resize_dimensions['width'], $resize_dimensions['height']);
|
|
|
|
if (isset($rotation))
|
|
{
|
|
$this->image->rotate($rotation);
|
|
}
|
|
|
|
$this->image->write($destination_filepath);
|
|
|
|
// everything should be OK if we are here!
|
|
return $this->get_resize_result($destination_filepath, $resize_dimensions['width'], $resize_dimensions['height'], $starttime);
|
|
}
|
|
|
|
static function get_resize_dimensions($width, $height, $max_width, $max_height, $rotation=null)
|
|
{
|
|
$rotate_for_dimensions = false;
|
|
if (isset($rotation) and in_array(abs($rotation), array(90, 270)))
|
|
{
|
|
$rotate_for_dimensions = true;
|
|
}
|
|
|
|
if ($rotate_for_dimensions)
|
|
{
|
|
list($width, $height) = array($height, $width);
|
|
}
|
|
|
|
$ratio_width = $width / $max_width;
|
|
$ratio_height = $height / $max_height;
|
|
$destination_width = $width;
|
|
$destination_height = $height;
|
|
|
|
// maximal size exceeded ?
|
|
if ($ratio_width > 1 or $ratio_height > 1)
|
|
{
|
|
if ($ratio_width < $ratio_height)
|
|
{
|
|
$destination_width = round($width / $ratio_height);
|
|
$destination_height = $max_height;
|
|
}
|
|
else
|
|
{
|
|
$destination_width = $max_width;
|
|
$destination_height = round($height / $ratio_width);
|
|
}
|
|
}
|
|
|
|
if ($rotate_for_dimensions)
|
|
{
|
|
list($destination_width, $destination_height) = array($destination_height, $destination_width);
|
|
}
|
|
|
|
return array(
|
|
'width' => $destination_width,
|
|
'height'=> $destination_height,
|
|
);
|
|
}
|
|
|
|
static function get_rotation_angle($source_filepath)
|
|
{
|
|
list($width, $height, $type) = getimagesize($source_filepath);
|
|
if (IMAGETYPE_JPEG != $type)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
if (!function_exists('exif_read_data'))
|
|
{
|
|
return null;
|
|
}
|
|
|
|
$rotation = null;
|
|
|
|
$exif = exif_read_data($source_filepath);
|
|
|
|
if (isset($exif['Orientation']) and preg_match('/^\s*(\d)/', $exif['Orientation'], $matches))
|
|
{
|
|
$orientation = $matches[1];
|
|
if (in_array($orientation, array(3, 4)))
|
|
{
|
|
$rotation = 180;
|
|
}
|
|
elseif (in_array($orientation, array(5, 6)))
|
|
{
|
|
$rotation = 270;
|
|
}
|
|
elseif (in_array($orientation, array(7, 8)))
|
|
{
|
|
$rotation = 90;
|
|
}
|
|
}
|
|
|
|
return $rotation;
|
|
}
|
|
|
|
private function get_resize_result($destination_filepath, $width, $height, $time=null)
|
|
{
|
|
return array(
|
|
'source' => $this->source_filepath,
|
|
'destination' => $destination_filepath,
|
|
'width' => $width,
|
|
'height' => $height,
|
|
'size' => floor(filesize($destination_filepath) / 1024).' KB',
|
|
'time' => $time ? number_format((get_moment() - $time) * 1000, 2, '.', ' ').' ms' : null,
|
|
'library' => $this->library,
|
|
);
|
|
}
|
|
|
|
static function is_imagick()
|
|
{
|
|
return (extension_loaded('imagick') and class_exists('Imagick'));
|
|
}
|
|
|
|
static function is_ext_imagick()
|
|
{
|
|
global $conf;
|
|
|
|
if (!function_exists('exec'))
|
|
{
|
|
return false;
|
|
}
|
|
@exec($conf['ext_imagick_dir'].'convert -version', $returnarray);
|
|
if (is_array($returnarray) and !empty($returnarray[0]) and preg_match('/ImageMagick/i', $returnarray[0]))
|
|
{
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static function is_gd()
|
|
{
|
|
return function_exists('gd_info');
|
|
}
|
|
|
|
static function get_library($library=null, $extension=null)
|
|
{
|
|
global $conf;
|
|
|
|
if (is_null($library))
|
|
{
|
|
$library = $conf['graphics_library'];
|
|
}
|
|
|
|
// Choose image library
|
|
switch (strtolower($library))
|
|
{
|
|
case 'auto':
|
|
case 'imagick':
|
|
if ($extension != 'gif' and self::is_imagick())
|
|
{
|
|
return 'imagick';
|
|
}
|
|
case 'ext_imagick':
|
|
if ($extension != 'gif' and self::is_ext_imagick())
|
|
{
|
|
return 'ext_imagick';
|
|
}
|
|
case 'gd':
|
|
if (self::is_gd())
|
|
{
|
|
return 'gd';
|
|
}
|
|
default:
|
|
if ($library != 'auto')
|
|
{
|
|
// Requested library not available. Try another library
|
|
return self::get_library('auto', $extension);
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function destroy()
|
|
{
|
|
if (method_exists($this->image, 'destroy'))
|
|
{
|
|
return $this->image->destroy();
|
|
}
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// +-----------------------------------------------------------------------+
|
|
// | Class for Imagick extension |
|
|
// +-----------------------------------------------------------------------+
|
|
|
|
class image_imagick implements imageInterface
|
|
{
|
|
var $image;
|
|
|
|
function __construct($source_filepath)
|
|
{
|
|
// A bug cause that Imagick class can not be extended
|
|
$this->image = new Imagick($source_filepath);
|
|
}
|
|
|
|
function get_width()
|
|
{
|
|
return $this->image->getImageWidth();
|
|
}
|
|
|
|
function get_height()
|
|
{
|
|
return $this->image->getImageHeight();
|
|
}
|
|
|
|
function set_compression_quality($quality)
|
|
{
|
|
return $this->image->setImageCompressionQuality($quality);
|
|
}
|
|
|
|
function crop($width, $height, $x, $y)
|
|
{
|
|
return $this->image->cropImage($width, $height, $x, $y);
|
|
}
|
|
|
|
function strip()
|
|
{
|
|
return $this->image->stripImage();
|
|
}
|
|
|
|
function rotate($rotation)
|
|
{
|
|
$this->image->rotateImage(new ImagickPixel(), -$rotation);
|
|
$this->image->setImageOrientation(Imagick::ORIENTATION_TOPLEFT);
|
|
return true;
|
|
}
|
|
|
|
function resize($width, $height)
|
|
{
|
|
$this->image->setInterlaceScheme(Imagick::INTERLACE_LINE);
|
|
return $this->image->resizeImage($width, $height, Imagick::FILTER_LANCZOS, 0.9);
|
|
}
|
|
|
|
function write($destination_filepath)
|
|
{
|
|
return $this->image->writeImage($destination_filepath);
|
|
}
|
|
}
|
|
|
|
// +-----------------------------------------------------------------------+
|
|
// | Class for ImageMagick external installation |
|
|
// +-----------------------------------------------------------------------+
|
|
|
|
class image_ext_imagick implements imageInterface
|
|
{
|
|
var $imagickdir = '';
|
|
var $source_filepath = '';
|
|
var $width = '';
|
|
var $height = '';
|
|
var $commands = array();
|
|
|
|
function __construct($source_filepath, $imagickdir='')
|
|
{
|
|
$this->source_filepath = $source_filepath;
|
|
$this->imagickdir = $imagickdir;
|
|
|
|
$command = $imagickdir.'identify -format "%wx%h" "'.realpath($source_filepath).'"';
|
|
@exec($command, $returnarray, $returnvalue);
|
|
if($returnvalue or !preg_match('/^(\d+)x(\d+)$/', $returnarray[0], $match))
|
|
{
|
|
die("[External ImageMagick] Corrupt image");
|
|
}
|
|
|
|
$this->width = $match[1];
|
|
$this->height = $match[2];
|
|
}
|
|
|
|
function add_command($command, $params=null)
|
|
{
|
|
$this->commands[$command] = $params;
|
|
}
|
|
|
|
function get_width()
|
|
{
|
|
return $this->width;
|
|
}
|
|
|
|
function get_height()
|
|
{
|
|
return $this->height;
|
|
}
|
|
|
|
function crop($width, $height, $x, $y)
|
|
{
|
|
$this->add_command('crop', $width.'x'.$height.'+'.$x.'+'.$y);
|
|
return true;
|
|
}
|
|
|
|
function strip()
|
|
{
|
|
$this->add_command('strip');
|
|
return true;
|
|
}
|
|
|
|
function rotate($rotation)
|
|
{
|
|
$this->add_command('rotate', -$rotation);
|
|
$this->add_command('orient', 'top-left');
|
|
return true;
|
|
}
|
|
|
|
function set_compression_quality($quality)
|
|
{
|
|
$this->add_command('quality', $quality);
|
|
return true;
|
|
}
|
|
|
|
function resize($width, $height)
|
|
{
|
|
$this->add_command('interlace', 'line');
|
|
$this->add_command('filter', 'Lanczos');
|
|
$this->add_command('resize', $width.'x'.$height.'!');
|
|
return true;
|
|
}
|
|
|
|
function write($destination_filepath)
|
|
{
|
|
$exec = $this->imagickdir.'convert';
|
|
$exec .= ' "'.realpath($this->source_filepath).'"';
|
|
|
|
foreach ($this->commands as $command => $params)
|
|
{
|
|
$exec .= ' -'.$command;
|
|
if (!empty($params))
|
|
{
|
|
$exec .= ' '.$params;
|
|
}
|
|
}
|
|
|
|
$dest = pathinfo($destination_filepath);
|
|
$exec .= ' "'.realpath($dest['dirname']).'/'.$dest['basename'].'"';
|
|
@exec($exec, $returnarray, $returnvalue);
|
|
return !$returnvalue;
|
|
}
|
|
}
|
|
|
|
// +-----------------------------------------------------------------------+
|
|
// | Class for GD library |
|
|
// +-----------------------------------------------------------------------+
|
|
|
|
class image_gd implements imageInterface
|
|
{
|
|
var $image;
|
|
var $quality = 95;
|
|
|
|
function __construct($source_filepath)
|
|
{
|
|
$gd_info = gd_info();
|
|
$extension = strtolower(get_extension($source_filepath));
|
|
|
|
if (in_array($extension, array('jpg', 'jpeg')))
|
|
{
|
|
$this->image = imagecreatefromjpeg($source_filepath);
|
|
}
|
|
else if ($extension == 'png')
|
|
{
|
|
$this->image = imagecreatefrompng($source_filepath);
|
|
}
|
|
elseif ($extension == 'gif' and $gd_info['GIF Read Support'] and $gd_info['GIF Create Support'])
|
|
{
|
|
$this->image = imagecreatefromgif($source_filepath);
|
|
}
|
|
else
|
|
{
|
|
die('[Image GD] unsupported file extension');
|
|
}
|
|
}
|
|
|
|
function get_width()
|
|
{
|
|
return imagesx($this->image);
|
|
}
|
|
|
|
function get_height()
|
|
{
|
|
return imagesy($this->image);
|
|
}
|
|
|
|
function crop($width, $height, $x, $y)
|
|
{
|
|
$dest = imagecreatetruecolor($width, $height);
|
|
|
|
imagealphablending($dest, false);
|
|
imagesavealpha($dest, true);
|
|
if (function_exists('imageantialias'))
|
|
{
|
|
imageantialias($dest, true);
|
|
}
|
|
|
|
$result = imagecopymerge($dest, $this->image, 0, 0, $x, $y, $width, $height, 100);
|
|
|
|
if ($result !== false)
|
|
{
|
|
imagedestroy($this->image);
|
|
$this->image = $dest;
|
|
}
|
|
else
|
|
{
|
|
imagedestroy($dest);
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
function strip()
|
|
{
|
|
return true;
|
|
}
|
|
|
|
function rotate($rotation)
|
|
{
|
|
$dest = imagerotate($this->image, $rotation, 0);
|
|
imagedestroy($this->image);
|
|
$this->image = $dest;
|
|
return true;
|
|
}
|
|
|
|
function set_compression_quality($quality)
|
|
{
|
|
$this->quality = $quality;
|
|
return true;
|
|
}
|
|
|
|
function resize($width, $height)
|
|
{
|
|
$dest = imagecreatetruecolor($width, $height);
|
|
|
|
imagealphablending($dest, false);
|
|
imagesavealpha($dest, true);
|
|
if (function_exists('imageantialias'))
|
|
{
|
|
imageantialias($dest, true);
|
|
}
|
|
|
|
$result = imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $width, $height, $this->get_width(), $this->get_height());
|
|
|
|
if ($result !== false)
|
|
{
|
|
imagedestroy($this->image);
|
|
$this->image = $dest;
|
|
}
|
|
else
|
|
{
|
|
imagedestroy($dest);
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
function write($destination_filepath)
|
|
{
|
|
$extension = strtolower(get_extension($destination_filepath));
|
|
|
|
if ($extension == 'png')
|
|
{
|
|
imagepng($this->image, $destination_filepath);
|
|
}
|
|
elseif ($extension == 'gif')
|
|
{
|
|
imagegif($this->image, $destination_filepath);
|
|
}
|
|
else
|
|
{
|
|
imagejpeg($this->image, $destination_filepath, $this->quality);
|
|
}
|
|
}
|
|
|
|
function destroy()
|
|
{
|
|
imagedestroy($this->image);
|
|
}
|
|
}
|
|
|
|
?>
|