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<?php
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// $Id: magnifier.module,v 1.6 2008/01/25 15:52:31 aaron Exp $
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define('MAGNIFIER_MAGNIFY_DEFAULT', 4);
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define('MAGNIFIER_GLASS_SIZE_DEFAULT', 125);
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/**
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* Displays an image with a magnifier glass box.
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*
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* @param $image_path
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* This is the filepath to the image to display.
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* @param $args
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* An array with optional arguments:
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* 'magnify' => 4, // the zoom magnification scale
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* 'glass_size' => 125, // the size of the glass box, which will be a square to zoom
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* 'imagecache' => '', // the imagecache setting to use for the smaller image. if this is set, then $image_path
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* // will be used for the image in the glass box only, and the imagecache'd version will be
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* // used in the main page display.
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* 'image' => '', // the image path of the larger image displayed in the glass when zooming.
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* // if not specified, this defaults to $image_path. You don't need this when using imagecache.
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* 'width' => NULL, // the display width of the smaller image -- if specified, forces a browser image scale
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* // you generally don't need this when using imagecache.
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* 'height' => NULL, // the display height of the smaller image -- if specified, forces a browser image scale
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* // you generally don't need this when using imagecache.
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* 'title' => '', // the title attribute
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* 'alt' => '', // the alt attribute
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* 'attributes' => array(), // additional attributes to send, as 'rel' => 'rel_path'
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* 'id' => FALSE, // if TRUE, then force magnifier to resolve as an ID (slightly faster, but may result in more
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* // javascript if multiple images on screen). additionally, if this is a string, then the ID
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* // of the image will be set to that string. Note that ID will always be set to true if an
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* // imagecache is used, or 'image' is set, so you won't have to set this attribute in that case.
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* @return
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* returns the magnified image as output
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*/
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function theme_magnifier($image_path, $args = array()) {
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$magnify = $args['magnify'] ? $args['magnify'] : MAGNIFIER_MAGNIFY_DEFAULT;
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$glass_size = $args['glass_size'] ? $args['glass_size'] : MAGNIFIER_GLASS_SIZE_DEFAULT;
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$imagecache = $args['imagecache'] ? $args['imagecache'] : NULL;
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$image = $args['image'] ? $args['image'] : '';
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$id = ($imagecache || ($image && $image_path != $image) || $args['id']) ? TRUE : FALSE;
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$id = is_string($args['id']) ? $args['id'] : $id;
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$attributes = isset($args['attributes']) ? (array) $args['attributes'] : array();
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$width = isset($args['width']) ? $args['width'] : NULL;
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$height = isset($args['height']) ? $args['height'] : NULL;
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if (isset($width)) {
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$attributes['width'] = $width;
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}
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if (isset($height)) {
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$attributes['height'] = $height;
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}
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$title = $args['title'] ? $args['title'] : '';
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$alt = $args['alt'] ? $args['alt']: '';
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$mag = magnifier_class($magnify, $glass_size, $image, $id);
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if ($id) {
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$attributes['id'] = $mag;
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}
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else if (isset($attributes['class'])) {
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$attributes['class'] .= " $mag";
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}
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else {
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$attributes['class'] = $mag;
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}
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$attributes['class'] .= ' magnifier';
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if ($imagecache && module_exists('imagecache')) {
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$output = theme('imagecache', $imagecache, $image_path, $title, $alt, $attributes);
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}
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else {
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if ($title) {
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$attributes['title'] = $title;
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}
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if ($alt) {
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$attributes['alt'] = $alt;
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}
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$attr_str = '';
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foreach ($attributes as $attr => $value) {
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$attr_str .= ' ' . check_plain($attr) . '="' . check_plain($value) . '"';
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}
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$output = '<img src="' . url($image_path) . '" ' . $attr_str . " />\n";
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}
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return $output;
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}
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function magnifier_class($magnify = NULL, $glass_size = NULL, $image = '', $id = FALSE) {
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static $count = 0, $classes;
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if (!isset($magnify)) {
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$magnify = MAGNIFIER_MAGNIFY_DEFAULT;
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}
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if (!isset($glass_size)) {
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$glass_size = MAGNIFIER_GLASS_SIZE_DEFAULT;
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}
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$id_or_class = $id ? '#' : '.';
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if (!isset($classes)) {
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$classes = array();
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if (module_exists('jq')) {
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if (!jq_add('magnifier')) {
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return FALSE;
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}
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}
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else {
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$base = drupal_get_path('module', 'magnifier');
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drupal_add_js($base . '/js/magnifier.js', 'module');
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drupal_add_css($base . '/css/magnifier.css', 'module');
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}
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}
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if (!isset($classes[$magnify][$glass_size][$id_or_class][$image])) {
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$class_name = is_string($id) ? $id : ('magnifier-' . $count);
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$classes[$magnify][$glass_size][$id_or_class][$image] = $class_name;
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if ($image) {
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$image_str = ', image:"' . $image . '"';
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}
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$js = '
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$(document).ready(function() {
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$("img' . $id_or_class . $class_name . '").magnify({ scale:' . $magnify . ', glassSize:' . $glass_size . $image_str . ' });
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});
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';
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drupal_add_js($js, 'inline');
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$count++;
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}
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return $classes[$magnify][$glass_size][$id_or_class][$image];
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}
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function magnifier_id($magnify = NULL, $glass_size = NULL, $image = '', $id = TRUE) {
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return magnifier_class($magnify, $glass_size, $image, $id);
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}
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function magnifier_jq($op, $plugin = NULL) {
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switch ($op) {
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case 'info':
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return array(
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'magnifier' => array(
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'name' => t('Magnifier'),
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'description' => t('This Magnifier jQuery plugin is based on the Dojo version. jQuery image magnification plugin - ported from dojox.image.Magnifier class.'),
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'version' => 'modified by Aaron Winborn',
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'url' => 'http://drupal.org/project/magnifier',
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'files' => array(
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'js' => array(
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drupal_get_path('module', 'magnifier') . '/js/magnifier.js',
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),
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'css' => array(
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drupal_get_path('module', 'magnifier') . '/css/magnifier.css',
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),
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),
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),
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);
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break;
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}
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}
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