83 lines
2.6 KiB
PHP
83 lines
2.6 KiB
PHP
<?php
|
|
/**
|
|
* Name: Arrow Key Navigation
|
|
* Author: Drudex Software <support@drudexsoftware.com>
|
|
* Link: http://www.drudexsoftware.com/
|
|
* License: GPLv2
|
|
* Description: Allows viewers no navigate between images using the left & right arrow keys.
|
|
* Documentation:
|
|
* Simply enable this extention in the extention manager to enable arrow key navigation.
|
|
*/
|
|
class ArrowkeyNavigation extends Extension {
|
|
# Adds functionality for post/view on images
|
|
public function onDisplayingImage(DisplayingImageEvent $event) {
|
|
$prev_url = make_http(make_link("post/prev/".$event->image->id));
|
|
$next_url = make_http(make_link("post/next/".$event->image->id));
|
|
$this->add_arrowkeys_code($prev_url, $next_url);
|
|
}
|
|
|
|
# Adds functionality for post/list
|
|
public function onPageRequest(PageRequestEvent $event) {
|
|
if($event->page_matches("post/list")) {
|
|
$pageinfo = $this->get_list_pageinfo($event);
|
|
$prev_url = make_http(make_link("post/list/".$pageinfo["prev"]));
|
|
$next_url = make_http(make_link("post/list/".$pageinfo["next"]));
|
|
$this->add_arrowkeys_code($prev_url, $next_url);
|
|
}
|
|
}
|
|
|
|
# adds the javascript to the page with the given urls
|
|
private function add_arrowkeys_code($prev_url, $next_url) {
|
|
global $page;
|
|
|
|
$page->add_html_header("<script type=\"text/javascript\">
|
|
(function($){
|
|
$(document).keyup(function(e) {
|
|
if($(e.target).is('input', 'textarea')){ return; }
|
|
if (e.keyCode == 37) { window.location.href = '{$prev_url}'; }
|
|
else if (e.keyCode == 39) { window.location.href = '{$next_url}'; }
|
|
});
|
|
})(jQuery);
|
|
</script>", 60);
|
|
}
|
|
|
|
# returns info about the current page number
|
|
private function get_list_pageinfo($event) {
|
|
global $config, $database;
|
|
|
|
// get the amount of images per page
|
|
$images_per_page = $config->get_int('index_images');
|
|
|
|
// if there are no tags, use default
|
|
if ($event->get_arg(1) == null){
|
|
$prefix = "";
|
|
$page_number = (int)$event->get_arg(0);
|
|
$total_pages = ceil($database->get_one(
|
|
"SELECT COUNT(*) FROM images") / $images_per_page);
|
|
}
|
|
else { // if there are tags, use pages with tags
|
|
$prefix = $event->get_arg(0)."/";
|
|
$page_number = (int)$event->get_arg(1);
|
|
$total_pages = ceil($database->get_one(
|
|
"SELECT count FROM tags WHERE tag=:tag",
|
|
array("tag"=>$event->get_arg(0))) / $images_per_page);
|
|
}
|
|
|
|
// creates previous & next values
|
|
// When previous first page, go to last page
|
|
if ($page_number <= 1) $prev = $total_pages;
|
|
else $prev = $page_number-1;
|
|
if ($page_number >= $total_pages) $next = 1;
|
|
else $next = $page_number+1;
|
|
|
|
// Create return array
|
|
$pageinfo = array(
|
|
"prev" => $prefix.$prev,
|
|
"next" => $prefix.$next,
|
|
);
|
|
|
|
return $pageinfo;
|
|
}
|
|
}
|
|
|