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<?php
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/**
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* $Id: $
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* @author Bruno Massa http://drupal.org/user/67164
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* @file slideshow_creator.inc
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* Create true slideshows using any image over internet with many other features.
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*/
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/**
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* Get all images on a given directory
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*
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* @param $path
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* string, the absolute path to start the scanner
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* @param $path
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* boolean, if its a recursive scanning
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* @return
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* array, all images (all path)
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*/
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function slideshow_creator_explore_dir($path = '', $recursive = FALSE) {
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static $files = array();
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if (empty($files)) {
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// This code will work on non GNU systems, like Solaris
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$exts = array('png', 'gif', 'jpeg', 'jpg', 'bmp',
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'PNG', 'GIF', 'JPEG', 'JPG', 'BMP');
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$files = array();
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foreach ($exts as $ext) {
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$files = array_merge($files, glob("$path*.$ext"));
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}
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if ($dirs = glob("$path*", GLOB_ONLYDIR) and !empty($recursive)) {
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foreach ($dirs as $dir) {
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$files = array_merge($files, slideshow_creator_explore_dir("$dir/"));
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}
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}
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}
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return $files;
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}
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/**
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* The main user hook to display a slideshow.
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*
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* @param $output
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* String, All the page text with the slideshow code
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* @return
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* String, All the page text with the slideshow HTML/Javascript
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*/
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function _slideshow_creator_process_text($output) {
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if (preg_match_all('/\[slideshow:([^]]+)\]/i', $output, $matches, PREG_SET_ORDER)) {
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$max_ss = count($matches);
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foreach ($matches as $match) {
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$attributes = preg_split('|(?<!\\\),|', $match[1]);
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if (!empty($attributes)) {
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$output = preg_replace('/\[slideshow:([^]]+)\]/i',
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_slideshow_creator_replace($max_ss, $attributes), $output, 1);
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}
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}
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}
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return $output;
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}
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/**
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* The main user hook to display a slideshow.
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*
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* @param &$max_ss
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* number, How many slideshows there are on the page
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* @param &$attributes
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* array, Each slideshow tag
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* @return
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* String, The HTML code
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*/
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function _slideshow_creator_replace(&$max_ss, &$attributes) {
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// To ensure that all slideshows have a unique
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// ID, the current_ss variable will hold a automatic
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// increasing number
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static $current_ss = 0;
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++$current_ss;
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$output = '';
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// using version system, its possible to expand the slideshow functionality
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// and support old versions
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switch ((int) $attributes[0]) {
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case 1:
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case 2:
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default:
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// Default settings
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$js = array(
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'fx' => 'fade',
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'pause' => 1,
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'speed' => 300,
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);
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$slides = array(
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'total' => 0,
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'layout' => 'default',
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);
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$attributes_count = count($attributes);
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foreach ($attributes as $attribute) {
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$attribute = explode('=', $attribute);
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// If no , skip the validation
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if (empty($attribute[1])) {
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continue;
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}
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if (trim(strtolower($attribute[0])) == 'img') { // img tag: URL|link|title|description|target format
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$img_attributes = explode('|' , $attribute[1]);
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if (!empty($img_attributes[1])) {
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$slides['total']++;
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$slides[$slides['total']] = array(
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'src' => _slideshow_creator_url(check_url(trim($img_attributes[1]))),
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'link' => !empty($img_attributes[2]) ? _slideshow_creator_url(url(trim($img_attributes[2]))) : 'javascript: void(0);',
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'title' => !empty($img_attributes[3]) ? check_plain(preg_replace('|\\\,|', ',', trim($img_attributes[3]))) : '',
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'description' => !empty($img_attributes[4]) ? check_plain(preg_replace('|\\\,|', ',', trim($img_attributes[4]))) : '',
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'target' => !empty($img_attributes[5]) ? check_plain(trim($img_attributes[5])) : '_blank',
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);
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}
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}
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elseif (trim(strtolower($attribute[0])) == 'dir') { // dir tag: scan all images from a given directory
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$dir_attributes = explode('|' , $attribute[1]);
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if (!empty($dir_attributes[1]) and $files = slideshow_creator_explore_dir('./'. $dir_attributes[1], $dir_attributes[2])) {
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foreach ($files as $file) {
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$file = preg_replace('/^\.\//', '', $file);
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$slides['total']++;
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$slides[$slides['total']] = array(
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'src' => $file,
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'link' => !empty($dir_attributes[3]) ? $file : 'javascript: void(0);',
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'title' => !empty($dir_attributes[4]) ? check_plain(preg_replace('|\\\,|', ',', trim($dir_attributes[4]))) : '',
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'description' => !empty($dir_attributes[5]) ? check_plain(preg_replace('|\\\,|', ',', trim($dir_attributes[5]))) : '',
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'target' => !empty($dir_attributes[6]) ? check_plain(trim($dir_attributes[6])) : '_blank',
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);
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}
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}
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}
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else { // all other tags
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// For retro compatibility, we must filter some results
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// to simulate the previous behaviour
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if (trim($attribute[0]) == 'rotate') {
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$js['speed'] = check_plain(trim($attribute[1]));
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}
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elseif (trim($attribute[0]) == 'blend') {
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}
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else {
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$js[trim($attribute[0])] = check_plain(trim($attribute[1]));
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}
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}
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}
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// If at least one slide is valid, build the Slideshow
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if ($slides['total'] > 0) {
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// To build the correct link for NEXT and PREVIOUS
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// buttons (for non-javascript browsers), we need to
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// know which slide each slideshow is now.
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if (!empty($_GET['ssc'])) {
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$status_sscs = explode(';', $_GET['ssc']);
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foreach ($status_sscs as $status_ssc) {
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$temp = explode(',' , $status_ssc);
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if ($temp[0] == $current_ss) {
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$sscs['next'][] = $temp[1] + 1 > $slides['total'] ? $current_ss .',1' : $current_ss .','. ($temp[1] + 1);
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$sscs['previous'][] = $temp[1] - 1 < 1 ? $current_ss .','. $slides['total'] : $current_ss .','. ($temp[1] - 1);
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$slides['current'] = $temp[1];
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$toggle = TRUE;
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}
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else {
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$sscs['next'][] = $status_ssc;
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$sscs['previous'][] = $status_ssc;
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$slides['current'] = 1;
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}
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}
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}
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if (empty($toggle)) {
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$sscs['next'][] = $slides['total'] > 1 ? check_plain($current_ss .',2') : check_plain($current_ss .',1');
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$sscs['previous'][] = check_plain($current_ss .','. $slides['total']);
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$slides['current'] = 1;
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}
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$links['next'] = check_plain(implode(';', $sscs['next'])) ;
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$links['previous'] = check_plain(implode(';', $sscs['previous'])) ;
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// The slideshow should be displayed using
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// a theme function to allow users to change
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// it's general look
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$output = theme('slideshow_creator', $current_ss, $links, $slides, $js);
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}
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break;
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}
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return $output;
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}
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/**
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* Repair internal urls using the pathfilter module, if available.
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*
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* @param $url
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* String, The url to complete (if internal)
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* @return
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* String, The full url, filtered from internal
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*/
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function _slideshow_creator_url($url) {
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if (module_exists('pathfilter')) {
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// Wrap url in double quotes, filter and then remove double quotes
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return preg_replace("(^\"|\"$)", '', pathfilter_filter('process', 0, -1, '"'. $url .'"'));
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}
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else {
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// Return URL as-is
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return $url;
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}
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}
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/**
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* Format the slideshow
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* @ingroup themeable
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*/
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function theme_slideshow_creator(&$ssid, &$links, $ss, $js) {
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// Initializing the variables
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$output_image = $output_previous = $output_status = $output_next = '';
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// Building the slideshow parts: title, name, slideshow weight and height
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$title = !empty($ss[$ss['current']]['title']) ? $ss[$ss['current']]['title'] : '';
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$output_name = !empty($ss['name']) ? $ss['name'] : '';
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$output_title = '<span class="ssc-title" id="ssc-title-'. $ssid .'">'. $title .'</span>';
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// Create each image. The order should be:
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// 1* the current picture to the end
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// 2* the first picture to the current
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for ($i = $ss['current']; $i <= $ss['total']; ++$i) {
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// $output_title = '<a href="'. $ss[$ss['current']]['link'] .
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// '" id="ssc-ltitle-'. $ssid .'" >'. $output_title .'</a>';
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// Build the image
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$image = theme('image', $ss[$i]['src'], check_plain($title),
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NULL, NULL, FALSE);
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// Unless the height and width was deternimed, we must
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// extract these values from each and every image and
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// select the biggest value to fix the image container
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// to this size
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if (empty($ss['width']) and empty($ss['height'])) {
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list($cur_width, $cur_height) = @getimagesize($ss[$i]['src']);
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$width = $cur_width > $width ? $cur_width : $width;
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$height = $cur_height > $height ? $cur_height : $height;
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}
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// Add a new image link
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$output_image .= l($image, $ss[$ss['current']]['link'], array('html' => TRUE)) ."\n";
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}
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for ($i = 1; $i < $ss['current']; ++$i) {
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// $output_title = '<a href="'. $ss[$ss['current']]['link'] .
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// '" id="ssc-ltitle-'. $ssid .'" >'. $output_title .'</a>';
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// Build the image
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$image = theme('image', $ss[$i]['src'], check_plain($title),
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NULL, NULL, FALSE);
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// Unless the height and width was deternimed, we must
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// extract these values from each and every image and
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// select the biggest value to fix the image container
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// to this size
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if (empty($ss['width']) and empty($ss['height'])) {
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list($cur_width, $cur_height) = @getimagesize($ss[$i]['src']);
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$width = $cur_width > $width ? $cur_width : $width;
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$height = $cur_height > $height ? $cur_height : $height;
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}
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// Add a new image link
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$output_image .= l($image, $ss[$ss['current']]['link'], array('html' => TRUE)) ."\n";
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}
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// Setting the image height and width
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$width = (empty($ss['width']) ? $width : $ss['width']) .'px';
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$height = (empty($ss['height']) ? $height : $ss['height']) .'px';
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// Put all images inside a big SPAN tag
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// $output_image = "\n<span id='ssc-pic-$ssid' class='ssc-pic' width=\"$width\" height=\"$height\">\n".
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// $output_image ."</span>\n";
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$output_image = "\n<span id='ssc-pic-$ssid' class='ssc-pic' style='width:$width;height:$height'>\n".
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$output_image ."</span>\n";
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// Put a PREVIOUS and NEXT buttons if there are more
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// then one image (generally TRUE for a slideshow)
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if ($ss['total'] > 1) {
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$output_previous = l(t('Previous'), $_GET['q'], array('query' => 'ssc='. $links['previous'],
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'attributes' => array('id' => 'ssc-previous-'. $ssid, 'class' => 'ssc-previous')));
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$output_status = ' <span class="ssc-index" id="ssc-index-'. $ssid .'">'.
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t('Image') .' <span class="ssc-current" id="ssc-current-'. $ssid .'">'.
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$ss['current'] .'</span>/'. $ss['total'] .' </span>';
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$output_next = l(t('Next'), $_GET['q'], array('query' => 'ssc='. $links['next'],
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'attributes' => array('id' => 'ssc-next-'. $ssid, 'class' => 'ssc-next')));
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}
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$output_descript = '<span class="ssc-description" id="ssc-description-'.
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$ssid .'">'. $ss[$ss['current']]['description'] ."</span>\n";
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// This will put the pieces into a given order,
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// base on which "layout" the user chose.
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if (empty($ss['layout']) or $ss['layout'] == 'default') {
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$output = $output_previous . $output_status . $output_next . $output_title .
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$output_image . $output_descript;
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}
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elseif ($ss['layout'] == 'reverse') {
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$output = $output_title . $output_image . $output_descript . $output_previous .
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$output_status . $output_next;
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}
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elseif ($ss['layout'] == 'bottom') {
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$output = $output_image . $output_title . $output_descript . $output_previous .
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$output_status . $output_next;
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}
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elseif ($ss['layout'] == 'top') {
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$output = $output_title . $output_descript . $output_previous . $output_status .
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$output_next . $output_image;
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}
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// Add the CSS file
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drupal_add_css(drupal_get_path('module', 'slideshow_creator') .'/slideshow_creator.css');
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// Add the main JavaScript, that does all the magic
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drupal_add_js(drupal_get_path('module', 'slideshow_creator') .'/slideshow_creator.js');
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drupal_add_js(drupal_get_path('module', 'slideshow_creator') .'/jquery.cycle.all.js');
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// Add specific data for this slideshow
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drupal_add_js(array('ssc' => array($ss['current'] => $js)), 'setting');
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// Put everything inside a SPAN tag
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return '<span class="ssc '. $output_name .'" id="ssc-'. $ssid ."\">\n".
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$output ."\n</span>\n";
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}
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