[11964] | 1 | <?php |
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| 2 | // +-----------------------------------------------------------------------+ |
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| 3 | // | Piwigo - a PHP based photo gallery | |
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| 4 | // +-----------------------------------------------------------------------+ |
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| 5 | // | Copyright(C) 2008-2011 Piwigo Team http://piwigo.org | |
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| 6 | // | Copyright(C) 2003-2008 PhpWebGallery Team http://phpwebgallery.net | |
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| 7 | // | Copyright(C) 2002-2003 Pierrick LE GALL http://le-gall.net/pierrick | |
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| 8 | // +-----------------------------------------------------------------------+ |
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| 9 | // | This program is free software; you can redistribute it and/or modify | |
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| 10 | // | it under the terms of the GNU General Public License as published by | |
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| 11 | // | the Free Software Foundation | |
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| 12 | // | | |
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| 13 | // | This program is distributed in the hope that it will be useful, but | |
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| 14 | // | WITHOUT ANY WARRANTY; without even the implied warranty of | |
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| 15 | // | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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| 16 | // | General Public License for more details. | |
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| 17 | // | | |
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| 18 | // | You should have received a copy of the GNU General Public License | |
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| 19 | // | along with this program; if not, write to the Free Software | |
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| 20 | // | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
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| 21 | // | USA. | |
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| 22 | // +-----------------------------------------------------------------------+ |
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| 23 | |
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| 24 | // +-----------------------------------------------------------------------+ |
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| 25 | // | Image Interface | |
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| 26 | // +-----------------------------------------------------------------------+ |
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| 27 | |
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| 28 | // Define all needed methods for image class |
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| 29 | interface imageInterface |
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| 30 | { |
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| 31 | function get_width(); |
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| 32 | |
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| 33 | function get_height(); |
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| 34 | |
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| 35 | function set_compression_quality($quality); |
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| 36 | |
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| 37 | function crop($width, $height, $x, $y); |
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| 38 | |
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| 39 | function strip(); |
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| 40 | |
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| 41 | function rotate($rotation); |
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| 42 | |
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| 43 | function resize($width, $height); |
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| 44 | |
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| 45 | function write($destination_filepath); |
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| 46 | } |
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| 47 | |
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| 48 | // +-----------------------------------------------------------------------+ |
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| 49 | // | Main Image Class | |
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| 50 | // +-----------------------------------------------------------------------+ |
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| 51 | |
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| 52 | class pwg_image |
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| 53 | { |
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| 54 | var $image; |
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| 55 | var $library = ''; |
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| 56 | var $source_filepath = ''; |
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| 57 | |
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| 58 | function __construct($source_filepath, $library=null) |
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| 59 | { |
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| 60 | $this->source_filepath = $source_filepath; |
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| 61 | |
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| 62 | trigger_action('load_image_library', array(&$this) ); |
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| 63 | |
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| 64 | if (is_object($this->image)) |
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| 65 | { |
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| 66 | return; // A plugin may have load its own library |
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| 67 | } |
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| 68 | |
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| 69 | $extension = strtolower(get_extension($source_filepath)); |
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| 70 | |
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| 71 | if (!in_array($extension, array('jpg', 'jpeg', 'png', 'gif'))) |
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| 72 | { |
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| 73 | die('[Image] unsupported file extension'); |
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| 74 | } |
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| 75 | |
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| 76 | if (!($this->library = self::get_library($library, $extension))) |
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| 77 | { |
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| 78 | die('No image library available on your server.'); |
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| 79 | } |
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| 80 | |
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| 81 | $class = 'image_'.$this->library; |
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| 82 | $this->image = new $class($source_filepath); |
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| 83 | } |
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| 84 | |
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| 85 | // Unknow methods will be redirected to image object |
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| 86 | function __call($method, $arguments) |
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| 87 | { |
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| 88 | return call_user_func_array(array($this->image, $method), $arguments); |
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| 89 | } |
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| 90 | |
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| 91 | // Piwigo resize function |
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| 92 | function pwg_resize($destination_filepath, $max_width, $max_height, $quality, $automatic_rotation=true, $strip_metadata=false, $crop=false, $follow_orientation=true) |
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| 93 | { |
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| 94 | $starttime = get_moment(); |
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| 95 | |
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| 96 | // width/height |
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| 97 | $source_width = $this->image->get_width(); |
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| 98 | $source_height = $this->image->get_height(); |
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| 99 | |
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| 100 | $rotation = null; |
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| 101 | if ($automatic_rotation) |
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| 102 | { |
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| 103 | $rotation = self::get_rotation_angle($this->source_filepath); |
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| 104 | } |
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[12750] | 105 | $resize_dimensions = self::get_resize_dimensions($source_width, $source_height, $max_width, $max_height, $rotation, $crop, $follow_orientation); |
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[11964] | 106 | |
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| 107 | // testing on height is useless in theory: if width is unchanged, there |
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| 108 | // should be no resize, because width/height ratio is not modified. |
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| 109 | if ($resize_dimensions['width'] == $source_width and $resize_dimensions['height'] == $source_height) |
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| 110 | { |
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| 111 | // the image doesn't need any resize! We just copy it to the destination |
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| 112 | copy($this->source_filepath, $destination_filepath); |
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| 113 | return $this->get_resize_result($destination_filepath, $resize_dimensions['width'], $resize_dimensions['height'], $starttime); |
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| 114 | } |
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| 115 | |
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| 116 | $this->image->set_compression_quality($quality); |
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| 117 | |
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| 118 | if ($strip_metadata) |
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| 119 | { |
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| 120 | // we save a few kilobytes. For example a thumbnail with metadata weights 25KB, without metadata 7KB. |
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| 121 | $this->image->strip(); |
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| 122 | } |
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[12750] | 123 | |
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| 124 | if (isset($resize_dimensions['crop'])) |
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| 125 | { |
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| 126 | $this->image->crop($resize_dimensions['crop']['width'], $resize_dimensions['crop']['height'], $resize_dimensions['crop']['x'], $resize_dimensions['crop']['y']); |
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| 127 | } |
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[11964] | 128 | |
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| 129 | $this->image->resize($resize_dimensions['width'], $resize_dimensions['height']); |
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| 130 | |
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| 131 | if (isset($rotation)) |
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| 132 | { |
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| 133 | $this->image->rotate($rotation); |
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| 134 | } |
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| 135 | |
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| 136 | $this->image->write($destination_filepath); |
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| 137 | |
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| 138 | // everything should be OK if we are here! |
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| 139 | return $this->get_resize_result($destination_filepath, $resize_dimensions['width'], $resize_dimensions['height'], $starttime); |
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| 140 | } |
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| 141 | |
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[12750] | 142 | static function get_resize_dimensions($width, $height, $max_width, $max_height, $rotation=null, $crop=false, $follow_orientation=true) |
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[11964] | 143 | { |
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| 144 | $rotate_for_dimensions = false; |
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| 145 | if (isset($rotation) and in_array(abs($rotation), array(90, 270))) |
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| 146 | { |
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| 147 | $rotate_for_dimensions = true; |
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| 148 | } |
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| 149 | |
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| 150 | if ($rotate_for_dimensions) |
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| 151 | { |
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| 152 | list($width, $height) = array($height, $width); |
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| 153 | } |
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[12750] | 154 | |
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| 155 | if ($crop) |
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| 156 | { |
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| 157 | $x = 0; |
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| 158 | $y = 0; |
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| 159 | |
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| 160 | if ($width < $height and $follow_orientation) |
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| 161 | { |
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| 162 | list($max_width, $max_height) = array($max_height, $max_width); |
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| 163 | } |
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| 164 | |
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| 165 | $img_ratio = $width / $height; |
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| 166 | $dest_ratio = $max_width / $max_height; |
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| 167 | |
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| 168 | if($dest_ratio > $img_ratio) |
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| 169 | { |
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| 170 | $destHeight = round($width * $max_height / $max_width); |
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| 171 | $y = round(($height - $destHeight) / 2 ); |
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| 172 | $height = $destHeight; |
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| 173 | } |
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| 174 | elseif ($dest_ratio < $img_ratio) |
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| 175 | { |
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| 176 | $destWidth = round($height * $max_width / $max_height); |
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| 177 | $x = round(($width - $destWidth) / 2 ); |
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| 178 | $width = $destWidth; |
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| 179 | } |
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| 180 | } |
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[11964] | 181 | |
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| 182 | $ratio_width = $width / $max_width; |
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| 183 | $ratio_height = $height / $max_height; |
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| 184 | $destination_width = $width; |
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| 185 | $destination_height = $height; |
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| 186 | |
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| 187 | // maximal size exceeded ? |
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| 188 | if ($ratio_width > 1 or $ratio_height > 1) |
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| 189 | { |
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| 190 | if ($ratio_width < $ratio_height) |
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| 191 | { |
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| 192 | $destination_width = round($width / $ratio_height); |
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| 193 | $destination_height = $max_height; |
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| 194 | } |
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| 195 | else |
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| 196 | { |
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| 197 | $destination_width = $max_width; |
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| 198 | $destination_height = round($height / $ratio_width); |
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| 199 | } |
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| 200 | } |
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| 201 | |
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| 202 | if ($rotate_for_dimensions) |
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| 203 | { |
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| 204 | list($destination_width, $destination_height) = array($destination_height, $destination_width); |
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| 205 | } |
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| 206 | |
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[12750] | 207 | $result = array( |
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[11964] | 208 | 'width' => $destination_width, |
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| 209 | 'height'=> $destination_height, |
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| 210 | ); |
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[12750] | 211 | |
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| 212 | if ($crop and ($x or $y)) |
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| 213 | { |
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| 214 | $result['crop'] = array( |
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| 215 | 'width' => $width, |
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| 216 | 'height' => $height, |
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| 217 | 'x' => $x, |
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| 218 | 'y' => $y, |
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| 219 | ); |
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| 220 | } |
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| 221 | return $result; |
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[11964] | 222 | } |
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| 223 | |
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| 224 | static function get_rotation_angle($source_filepath) |
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| 225 | { |
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| 226 | list($width, $height, $type) = getimagesize($source_filepath); |
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| 227 | if (IMAGETYPE_JPEG != $type) |
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| 228 | { |
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| 229 | return null; |
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| 230 | } |
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| 231 | |
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| 232 | if (!function_exists('exif_read_data')) |
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| 233 | { |
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| 234 | return null; |
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| 235 | } |
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| 236 | |
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| 237 | $rotation = null; |
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| 238 | |
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| 239 | $exif = exif_read_data($source_filepath); |
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| 240 | |
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| 241 | if (isset($exif['Orientation']) and preg_match('/^\s*(\d)/', $exif['Orientation'], $matches)) |
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| 242 | { |
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| 243 | $orientation = $matches[1]; |
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| 244 | if (in_array($orientation, array(3, 4))) |
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| 245 | { |
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| 246 | $rotation = 180; |
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| 247 | } |
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| 248 | elseif (in_array($orientation, array(5, 6))) |
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| 249 | { |
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| 250 | $rotation = 270; |
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| 251 | } |
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| 252 | elseif (in_array($orientation, array(7, 8))) |
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| 253 | { |
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| 254 | $rotation = 90; |
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| 255 | } |
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| 256 | } |
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| 257 | |
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| 258 | return $rotation; |
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| 259 | } |
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| 260 | |
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| 261 | private function get_resize_result($destination_filepath, $width, $height, $time=null) |
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| 262 | { |
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| 263 | return array( |
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| 264 | 'source' => $this->source_filepath, |
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| 265 | 'destination' => $destination_filepath, |
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| 266 | 'width' => $width, |
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| 267 | 'height' => $height, |
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| 268 | 'size' => floor(filesize($destination_filepath) / 1024).' KB', |
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| 269 | 'time' => $time ? number_format((get_moment() - $time) * 1000, 2, '.', ' ').' ms' : null, |
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| 270 | 'library' => $this->library, |
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| 271 | ); |
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| 272 | } |
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| 273 | |
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| 274 | static function is_imagick() |
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| 275 | { |
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[12582] | 276 | return (extension_loaded('imagick') and class_exists('Imagick')); |
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[11964] | 277 | } |
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| 278 | |
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| 279 | static function is_ext_imagick() |
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| 280 | { |
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| 281 | global $conf; |
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| 282 | |
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| 283 | if (!function_exists('exec')) |
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| 284 | { |
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| 285 | return false; |
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| 286 | } |
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[12494] | 287 | @exec($conf['ext_imagick_dir'].'convert -version', $returnarray); |
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| 288 | if (is_array($returnarray) and !empty($returnarray[0]) and preg_match('/ImageMagick/i', $returnarray[0])) |
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[11964] | 289 | { |
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| 290 | return true; |
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| 291 | } |
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| 292 | return false; |
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| 293 | } |
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| 294 | |
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| 295 | static function is_gd() |
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| 296 | { |
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| 297 | return function_exists('gd_info'); |
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| 298 | } |
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| 299 | |
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| 300 | static function get_library($library=null, $extension=null) |
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| 301 | { |
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| 302 | global $conf; |
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| 303 | |
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| 304 | if (is_null($library)) |
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| 305 | { |
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| 306 | $library = $conf['graphics_library']; |
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| 307 | } |
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| 308 | |
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| 309 | // Choose image library |
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| 310 | switch (strtolower($library)) |
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| 311 | { |
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| 312 | case 'auto': |
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| 313 | case 'imagick': |
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| 314 | if ($extension != 'gif' and self::is_imagick()) |
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| 315 | { |
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| 316 | return 'imagick'; |
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| 317 | } |
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| 318 | case 'ext_imagick': |
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| 319 | if ($extension != 'gif' and self::is_ext_imagick()) |
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| 320 | { |
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| 321 | return 'ext_imagick'; |
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| 322 | } |
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| 323 | case 'gd': |
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| 324 | if (self::is_gd()) |
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| 325 | { |
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| 326 | return 'gd'; |
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| 327 | } |
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| 328 | default: |
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| 329 | if ($library != 'auto') |
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| 330 | { |
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| 331 | // Requested library not available. Try another library |
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| 332 | return self::get_library('auto', $extension); |
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| 333 | } |
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| 334 | } |
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| 335 | return false; |
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| 336 | } |
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| 337 | |
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| 338 | function destroy() |
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| 339 | { |
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| 340 | if (method_exists($this->image, 'destroy')) |
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| 341 | { |
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| 342 | return $this->image->destroy(); |
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| 343 | } |
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| 344 | return true; |
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| 345 | } |
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| 346 | } |
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| 347 | |
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| 348 | // +-----------------------------------------------------------------------+ |
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| 349 | // | Class for Imagick extension | |
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| 350 | // +-----------------------------------------------------------------------+ |
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| 351 | |
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| 352 | class image_imagick implements imageInterface |
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| 353 | { |
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| 354 | var $image; |
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| 355 | |
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| 356 | function __construct($source_filepath) |
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| 357 | { |
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| 358 | // A bug cause that Imagick class can not be extended |
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| 359 | $this->image = new Imagick($source_filepath); |
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| 360 | } |
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| 361 | |
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| 362 | function get_width() |
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| 363 | { |
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| 364 | return $this->image->getImageWidth(); |
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| 365 | } |
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| 366 | |
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| 367 | function get_height() |
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| 368 | { |
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| 369 | return $this->image->getImageHeight(); |
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| 370 | } |
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| 371 | |
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| 372 | function set_compression_quality($quality) |
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| 373 | { |
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| 374 | return $this->image->setImageCompressionQuality($quality); |
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| 375 | } |
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| 376 | |
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| 377 | function crop($width, $height, $x, $y) |
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| 378 | { |
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| 379 | return $this->image->cropImage($width, $height, $x, $y); |
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| 380 | } |
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| 381 | |
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| 382 | function strip() |
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| 383 | { |
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| 384 | return $this->image->stripImage(); |
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| 385 | } |
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| 386 | |
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| 387 | function rotate($rotation) |
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| 388 | { |
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| 389 | $this->image->rotateImage(new ImagickPixel(), -$rotation); |
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| 390 | $this->image->setImageOrientation(Imagick::ORIENTATION_TOPLEFT); |
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| 391 | return true; |
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| 392 | } |
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| 393 | |
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| 394 | function resize($width, $height) |
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| 395 | { |
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| 396 | $this->image->setInterlaceScheme(Imagick::INTERLACE_LINE); |
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| 397 | return $this->image->resizeImage($width, $height, Imagick::FILTER_LANCZOS, 0.9); |
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| 398 | } |
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| 399 | |
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| 400 | function write($destination_filepath) |
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| 401 | { |
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| 402 | return $this->image->writeImage($destination_filepath); |
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| 403 | } |
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| 404 | } |
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| 405 | |
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| 406 | // +-----------------------------------------------------------------------+ |
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| 407 | // | Class for ImageMagick external installation | |
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| 408 | // +-----------------------------------------------------------------------+ |
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| 409 | |
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| 410 | class image_ext_imagick implements imageInterface |
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| 411 | { |
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| 412 | var $imagickdir = ''; |
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| 413 | var $source_filepath = ''; |
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| 414 | var $width = ''; |
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| 415 | var $height = ''; |
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| 416 | var $commands = array(); |
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| 417 | |
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| 418 | function __construct($source_filepath, $imagickdir='') |
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| 419 | { |
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| 420 | $this->source_filepath = $source_filepath; |
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| 421 | $this->imagickdir = $imagickdir; |
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| 422 | |
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[15576] | 423 | if (get_host() == 'kundenserver.de') // 1and1 |
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| 424 | { |
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| 425 | @putenv('MAGICK_THREAD_LIMIT=1'); |
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| 426 | } |
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| 427 | |
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[11964] | 428 | $command = $imagickdir.'identify -format "%wx%h" "'.realpath($source_filepath).'"'; |
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[12757] | 429 | @exec($command, $returnarray); |
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| 430 | if(!is_array($returnarray) or empty($returnarray[0]) or !preg_match('/^(\d+)x(\d+)$/', $returnarray[0], $match)) |
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[11964] | 431 | { |
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| 432 | die("[External ImageMagick] Corrupt image"); |
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| 433 | } |
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| 434 | |
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| 435 | $this->width = $match[1]; |
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| 436 | $this->height = $match[2]; |
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| 437 | } |
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| 438 | |
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| 439 | function add_command($command, $params=null) |
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| 440 | { |
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| 441 | $this->commands[$command] = $params; |
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| 442 | } |
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| 443 | |
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| 444 | function get_width() |
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| 445 | { |
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| 446 | return $this->width; |
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| 447 | } |
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| 448 | |
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| 449 | function get_height() |
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| 450 | { |
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| 451 | return $this->height; |
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| 452 | } |
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| 453 | |
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| 454 | function crop($width, $height, $x, $y) |
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| 455 | { |
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| 456 | $this->add_command('crop', $width.'x'.$height.'+'.$x.'+'.$y); |
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| 457 | return true; |
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| 458 | } |
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| 459 | |
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| 460 | function strip() |
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| 461 | { |
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| 462 | $this->add_command('strip'); |
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| 463 | return true; |
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| 464 | } |
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| 465 | |
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| 466 | function rotate($rotation) |
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| 467 | { |
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| 468 | $this->add_command('rotate', -$rotation); |
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| 469 | $this->add_command('orient', 'top-left'); |
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| 470 | return true; |
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| 471 | } |
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| 472 | |
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| 473 | function set_compression_quality($quality) |
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| 474 | { |
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| 475 | $this->add_command('quality', $quality); |
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| 476 | return true; |
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| 477 | } |
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| 478 | |
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| 479 | function resize($width, $height) |
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| 480 | { |
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| 481 | $this->add_command('interlace', 'line'); |
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| 482 | $this->add_command('filter', 'Lanczos'); |
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| 483 | $this->add_command('resize', $width.'x'.$height.'!'); |
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| 484 | return true; |
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| 485 | } |
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| 486 | |
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| 487 | function write($destination_filepath) |
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| 488 | { |
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| 489 | $exec = $this->imagickdir.'convert'; |
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| 490 | $exec .= ' "'.realpath($this->source_filepath).'"'; |
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| 491 | |
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| 492 | foreach ($this->commands as $command => $params) |
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| 493 | { |
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| 494 | $exec .= ' -'.$command; |
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| 495 | if (!empty($params)) |
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| 496 | { |
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| 497 | $exec .= ' '.$params; |
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| 498 | } |
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| 499 | } |
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| 500 | |
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| 501 | $dest = pathinfo($destination_filepath); |
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| 502 | $exec .= ' "'.realpath($dest['dirname']).'/'.$dest['basename'].'"'; |
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[12757] | 503 | @exec($exec, $returnarray); |
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| 504 | return is_array($returnarray); |
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[11964] | 505 | } |
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| 506 | } |
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| 507 | |
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| 508 | // +-----------------------------------------------------------------------+ |
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| 509 | // | Class for GD library | |
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| 510 | // +-----------------------------------------------------------------------+ |
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| 511 | |
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| 512 | class image_gd implements imageInterface |
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| 513 | { |
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| 514 | var $image; |
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| 515 | var $quality = 95; |
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| 516 | |
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| 517 | function __construct($source_filepath) |
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| 518 | { |
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| 519 | $gd_info = gd_info(); |
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| 520 | $extension = strtolower(get_extension($source_filepath)); |
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| 521 | |
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| 522 | if (in_array($extension, array('jpg', 'jpeg'))) |
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| 523 | { |
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| 524 | $this->image = imagecreatefromjpeg($source_filepath); |
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| 525 | } |
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| 526 | else if ($extension == 'png') |
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| 527 | { |
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| 528 | $this->image = imagecreatefrompng($source_filepath); |
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| 529 | } |
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| 530 | elseif ($extension == 'gif' and $gd_info['GIF Read Support'] and $gd_info['GIF Create Support']) |
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| 531 | { |
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| 532 | $this->image = imagecreatefromgif($source_filepath); |
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| 533 | } |
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| 534 | else |
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| 535 | { |
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| 536 | die('[Image GD] unsupported file extension'); |
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| 537 | } |
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| 538 | } |
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| 539 | |
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| 540 | function get_width() |
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| 541 | { |
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| 542 | return imagesx($this->image); |
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| 543 | } |
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| 544 | |
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| 545 | function get_height() |
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| 546 | { |
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| 547 | return imagesy($this->image); |
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| 548 | } |
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| 549 | |
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| 550 | function crop($width, $height, $x, $y) |
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| 551 | { |
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| 552 | $dest = imagecreatetruecolor($width, $height); |
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| 553 | |
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| 554 | imagealphablending($dest, false); |
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| 555 | imagesavealpha($dest, true); |
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| 556 | if (function_exists('imageantialias')) |
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| 557 | { |
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| 558 | imageantialias($dest, true); |
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| 559 | } |
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| 560 | |
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| 561 | $result = imagecopymerge($dest, $this->image, 0, 0, $x, $y, $width, $height, 100); |
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| 562 | |
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| 563 | if ($result !== false) |
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| 564 | { |
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| 565 | imagedestroy($this->image); |
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| 566 | $this->image = $dest; |
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| 567 | } |
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| 568 | else |
---|
| 569 | { |
---|
| 570 | imagedestroy($dest); |
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| 571 | } |
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| 572 | return $result; |
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| 573 | } |
---|
| 574 | |
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| 575 | function strip() |
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| 576 | { |
---|
| 577 | return true; |
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| 578 | } |
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| 579 | |
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| 580 | function rotate($rotation) |
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| 581 | { |
---|
| 582 | $dest = imagerotate($this->image, $rotation, 0); |
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| 583 | imagedestroy($this->image); |
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| 584 | $this->image = $dest; |
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| 585 | return true; |
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| 586 | } |
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| 587 | |
---|
| 588 | function set_compression_quality($quality) |
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| 589 | { |
---|
| 590 | $this->quality = $quality; |
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| 591 | return true; |
---|
| 592 | } |
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| 593 | |
---|
| 594 | function resize($width, $height) |
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| 595 | { |
---|
| 596 | $dest = imagecreatetruecolor($width, $height); |
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| 597 | |
---|
| 598 | imagealphablending($dest, false); |
---|
| 599 | imagesavealpha($dest, true); |
---|
| 600 | if (function_exists('imageantialias')) |
---|
| 601 | { |
---|
| 602 | imageantialias($dest, true); |
---|
| 603 | } |
---|
| 604 | |
---|
| 605 | $result = imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $width, $height, $this->get_width(), $this->get_height()); |
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| 606 | |
---|
| 607 | if ($result !== false) |
---|
| 608 | { |
---|
| 609 | imagedestroy($this->image); |
---|
| 610 | $this->image = $dest; |
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| 611 | } |
---|
| 612 | else |
---|
| 613 | { |
---|
| 614 | imagedestroy($dest); |
---|
| 615 | } |
---|
| 616 | return $result; |
---|
| 617 | } |
---|
| 618 | |
---|
| 619 | function write($destination_filepath) |
---|
| 620 | { |
---|
| 621 | $extension = strtolower(get_extension($destination_filepath)); |
---|
| 622 | |
---|
| 623 | if ($extension == 'png') |
---|
| 624 | { |
---|
| 625 | imagepng($this->image, $destination_filepath); |
---|
| 626 | } |
---|
| 627 | elseif ($extension == 'gif') |
---|
| 628 | { |
---|
| 629 | imagegif($this->image, $destination_filepath); |
---|
| 630 | } |
---|
| 631 | else |
---|
| 632 | { |
---|
| 633 | imagejpeg($this->image, $destination_filepath, $this->quality); |
---|
| 634 | } |
---|
| 635 | } |
---|
| 636 | |
---|
| 637 | function destroy() |
---|
| 638 | { |
---|
| 639 | imagedestroy($this->image); |
---|
| 640 | } |
---|
| 641 | } |
---|
| 642 | |
---|
[10641] | 643 | ?> |
---|