[95] | 1 | <?php |
---|
| 2 | /** |
---|
[362] | 3 | * The Strangecode Codebase - a general application development framework for PHP |
---|
| 4 | * For details visit the project site: <http://trac.strangecode.com/codebase/> |
---|
[376] | 5 | * Copyright 2001-2010 Strangecode, LLC |
---|
[362] | 6 | * |
---|
| 7 | * This file is part of The Strangecode Codebase. |
---|
| 8 | * |
---|
| 9 | * The Strangecode Codebase is free software: you can redistribute it and/or |
---|
| 10 | * modify it under the terms of the GNU General Public License as published by the |
---|
| 11 | * Free Software Foundation, either version 3 of the License, or (at your option) |
---|
| 12 | * any later version. |
---|
| 13 | * |
---|
| 14 | * The Strangecode Codebase is distributed in the hope that it will be useful, but |
---|
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
---|
| 16 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more |
---|
| 17 | * details. |
---|
| 18 | * |
---|
| 19 | * You should have received a copy of the GNU General Public License along with |
---|
| 20 | * The Strangecode Codebase. If not, see <http://www.gnu.org/licenses/>. |
---|
| 21 | */ |
---|
| 22 | |
---|
| 23 | /** |
---|
[95] | 24 | * Image.inc.php |
---|
[136] | 25 | * |
---|
[95] | 26 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
| 27 | * @version 1.1 |
---|
| 28 | * @since 14 Apr 2006 20:07:29 |
---|
| 29 | */ |
---|
| 30 | class Image { |
---|
| 31 | |
---|
| 32 | // Object parameters. |
---|
| 33 | var $_params = array(); |
---|
| 34 | |
---|
| 35 | /** |
---|
| 36 | * Constructor. |
---|
| 37 | * |
---|
| 38 | * @param array $params Set parameters for this object. |
---|
| 39 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
| 40 | * @version 1.1 |
---|
| 41 | * @since 26 Jan 2005 01:54:50 |
---|
| 42 | */ |
---|
| 43 | function Image($params=array()) |
---|
| 44 | { |
---|
| 45 | if (!is_array($params)) { |
---|
| 46 | trigger_error(sprintf('Parameters not specified properly.', null), E_USER_ERROR); |
---|
| 47 | } |
---|
| 48 | $defaults = array( |
---|
| 49 | // Pattern passed to glob() with $id to match image filenames. |
---|
| 50 | 'filename_pattern' => '%s*', |
---|
| 51 | |
---|
| 52 | // The path to the image source directory. (Ex: /var/www/htdocs/images) |
---|
| 53 | 'base_path' => '', |
---|
| 54 | |
---|
| 55 | // The URL to the image directory. (Ex: /images) |
---|
| 56 | 'base_url' => '', |
---|
| 57 | |
---|
| 58 | // Image to use in the case of a missing image. |
---|
| 59 | 'default_image_file' => '', |
---|
| 60 | ); |
---|
| 61 | $this->_params = array_merge($defaults, $params); |
---|
| 62 | } |
---|
| 63 | |
---|
| 64 | /** |
---|
| 65 | * Tests if an image with specified id exists on the file system. |
---|
| 66 | * |
---|
| 67 | * @access public |
---|
| 68 | * @param string $id Unique image identifier. |
---|
| 69 | * @return bool Existence of file. |
---|
| 70 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
| 71 | * @version 1.0 |
---|
| 72 | * @since 26 Jan 2005 01:54:50 |
---|
| 73 | */ |
---|
| 74 | function exists($id) |
---|
| 75 | { |
---|
| 76 | $src = $this->oSrc($id); |
---|
| 77 | $filepath = preg_match('!://!', $src) ? $src : getenv('DOCUMENT_ROOT') . $src; |
---|
[334] | 78 | // Use exif_imagetype to check not only file existence but that of a valid image. |
---|
[95] | 79 | return false != @exif_imagetype($filepath); |
---|
| 80 | } |
---|
| 81 | |
---|
| 82 | /** |
---|
| 83 | * Returns the value from getimagesize(). |
---|
| 84 | * |
---|
| 85 | * @access public |
---|
| 86 | * @param string $id Unique image identifier. |
---|
| 87 | * @param int $key Which element from the array returned by getimagesize: |
---|
| 88 | * - Index 0 contains the width of the image in pixels. |
---|
| 89 | * - Index 1 contains the height. |
---|
| 90 | * - Index 2 is the type of the image. |
---|
| 91 | * - Index 3 is height="yyy" width="xxx" string. |
---|
| 92 | * @return mixed return value of getimagesize. |
---|
| 93 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
| 94 | * @version 1.0 |
---|
| 95 | * @since 26 Jan 2005 01:54:50 |
---|
| 96 | */ |
---|
| 97 | function size($id, $key) |
---|
| 98 | { |
---|
| 99 | $src = $this->oSrc($id); |
---|
| 100 | $filepath = preg_match('!://!', $src) ? $src : getenv('DOCUMENT_ROOT') . $src; |
---|
| 101 | $img_size = @getimagesize($filepath); |
---|
| 102 | return isset($img_size[$key]) ? $img_size[$key] : false; |
---|
| 103 | } |
---|
| 104 | |
---|
| 105 | /** |
---|
| 106 | * Returns the URL to the source of image specified by id. |
---|
| 107 | * |
---|
| 108 | * @access public |
---|
| 109 | * @param string $id Unique image identifier. |
---|
| 110 | * @return string Absolute URL of image. |
---|
| 111 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
| 112 | * @version 1.1 |
---|
| 113 | * @since 26 Jan 2005 01:56:35 |
---|
| 114 | */ |
---|
| 115 | function oSrc($id) |
---|
| 116 | { |
---|
| 117 | $file_name = ''; |
---|
[121] | 118 | // filename_pattern is a sprintf argument with %s replaced with the image id. |
---|
[95] | 119 | if ($file_match = glob(sprintf("%s/{$this->_params['filename_pattern']}", $this->_params['base_path'], $id))) { |
---|
| 120 | $file_name = basename(end($file_match)); |
---|
| 121 | } else if ('' != $this->_params['default_image_file']) { |
---|
| 122 | $file_name = $this->_params['default_image_file']; |
---|
| 123 | } |
---|
| 124 | return sprintf('%s/%s', $this->_params['base_url'], $file_name); |
---|
| 125 | } |
---|
| 126 | |
---|
| 127 | /** |
---|
| 128 | * Returns an HTML <img> tag with the src set to an image specified by id. |
---|
| 129 | * Automatically prints image width and height. |
---|
| 130 | * |
---|
| 131 | * @access public |
---|
| 132 | * @param string $id Unique image identifier. |
---|
| 133 | * @param string $alt Text for image alt attribute. |
---|
| 134 | * @param string $extra Additional tag attributes. |
---|
| 135 | * @return HTML image tag. |
---|
| 136 | * @author Quinn Comendant <quinn@strangecode.com> |
---|
| 137 | * @version 1.0 |
---|
| 138 | * @since 26 Jan 2005 01:57:33 |
---|
| 139 | */ |
---|
| 140 | function oImg($id, $alt='', $extra='') |
---|
| 141 | { |
---|
| 142 | $src = $this->oSrc($id); |
---|
| 143 | $filepath = preg_match('!://!', $src) ? $src : getenv('DOCUMENT_ROOT') . $src; |
---|
| 144 | |
---|
| 145 | if (false === ($gis = @getimagesize($filepath)) || preg_match('/width|height/', $extra)) { |
---|
| 146 | $image_size = ''; |
---|
| 147 | } else { |
---|
| 148 | $image_size = $gis[3]; |
---|
| 149 | } |
---|
| 150 | |
---|
| 151 | return sprintf('<img src="%s" %s alt="%s" %s />', |
---|
| 152 | $src, |
---|
| 153 | $image_size, |
---|
| 154 | oTxt($alt), |
---|
| 155 | $extra |
---|
| 156 | ); |
---|
| 157 | } |
---|
| 158 | } // End class |
---|
| 159 | |
---|
| 160 | ?> |
---|