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helper.php
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/
helper.php
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<?php
/**
* @version $Id: helper.php 12 2014-01-24 10:20:16Z szymon $
* @package DJ-ImageSlider
* @subpackage DJ-ImageSlider Component
* @copyright Copyright (C) 2012 DJ-Extensions.com, All rights reserved.
* @license http://www.gnu.org/licenses GNU/GPL
* @author url: http://dj-extensions.com
* @author email contact@dj-extensions.com
* @developer Szymon Woronowski - szymon.woronowski@design-joomla.eu
*
*
* DJ-ImageSlider is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* DJ-ImageSlider is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with DJ-ImageSlider. If not, see <http://www.gnu.org/licenses/>.
*
*/
// no direct access
defined('_JEXEC') or die ('Restricted access');
class modDJImageSliderHelper
{
static function getImagesFromFolder(&$params) {
if(!is_numeric($max = $params->get('max_images'))) $max = 20;
$folder = $params->get('image_folder');
if(!$dir = @opendir($folder)) return null;
while (false !== ($file = readdir($dir)))
{
if (preg_match('/.+\.(jpg|jpeg|gif|png)$/i', $file)) {
// check with getimagesize() which attempts to return the image mime-type
if(getimagesize(JPATH_ROOT.DS.$folder.DS.$file)!==FALSE) $files[] = $file;
}
}
closedir($dir);
if($params->get('sort_by')) natcasesort($files);
else shuffle($files);
$images = array_slice($files, 0, $max);
$target = modDJImageSliderHelper::getSlideTarget($params->get('link'));
foreach($images as $image) {
$slides[] = (object) array('title'=>'', 'description'=>'', 'image'=>$folder.'/'.$image, 'link'=>$params->get('link'), 'alt'=>$image, 'target'=>$target);
}
return $slides;
}
static function getImagesFromDJImageSlider(&$params) {
if(!is_numeric($max = $params->get('max_images'))) $max = 20;
$catid = $params->get('category',0);
// build query to get slides
$db = JFactory::getDBO();
$query = $db->getQuery(true);
$query->select('a.*');
$query->from('#__djimageslider AS a');
if (is_numeric($catid)) {
$query->where('a.catid = ' . (int) $catid);
}
// Filter by start and end dates.
$nullDate = $db->Quote($db->getNullDate());
$nowDate = $db->Quote(JFactory::getDate()->format($db->getDateFormat()));
$query->where('a.published = 1');
$query->where('(a.publish_up = '.$nullDate.' OR a.publish_up <= '.$nowDate.')');
$query->where('(a.publish_down = '.$nullDate.' OR a.publish_down >= '.$nowDate.')');
if($params->get('sort_by',1)) {
$query->order('a.ordering ASC');
} else {
$query->order('RAND()');
}
$db->setQuery($query, 0 , $max);
$slides = $db->loadObjectList();
foreach($slides as $slide){
$slide->params = new JRegistry($slide->params);
$slide->link = modDJImageSliderHelper::getSlideLink($slide);
$slide->description = modDJImageSliderHelper::getSlideDescription($slide, $params->get('limit_desc'));
$slide->alt = $slide->title;
$slide->target = $slide->params->get('link_target','');
if(empty($slide->target)) $slide->target = modDJImageSliderHelper::getSlideTarget($slide->link);
}
return $slides;
}
static function getSlideLink(&$slide) {
$link = '';
$db = JFactory::getDBO();
$app = JFactory::getApplication();
switch($slide->params->get('link_type', '')) {
case 'menu':
if ($menuid = $slide->params->get('link_menu',0)) {
$menu = $app->getMenu();
$menuitem = $menu->getItem($menuid);
if($menuitem) switch($menuitem->type) {
case 'component':
$link = JRoute::_($menuitem->link.'&Itemid='.$menuid);
break;
case 'url':
case 'alias':
$link = JRoute::_($menuitem->link);
break;
}
}
break;
case 'url':
if($itemurl = $slide->params->get('link_url',0)) {
$link = JRoute::_($itemurl);
}
break;
case 'article':
if ($artid = $slide->params->get('id',$slide->params->get('link_article',0))) {
jimport('joomla.application.component.model');
require_once(JPATH_BASE.DS.'components'.DS.'com_content'.DS.'helpers'.DS.'route.php');
JModelLegacy::addIncludePath(JPATH_BASE.DS.'components'.DS.'com_content'.DS.'models');
$model = JModelLegacy::getInstance('Articles', 'ContentModel', array('ignore_request'=>true));
$model->setState('params', $app->getParams());
$model->setState('filter.article_id', $artid);
$model->setState('filter.article_id.include', true); // Include
$items = $model->getItems();
if($items && $item = $items[0]) {
$item->slug = $item->alias ? ($item->id . ':' . $item->alias) : $item->id;
$link = JRoute::_(ContentHelperRoute::getArticleRoute($item->slug, $item->catid));
$slide->introtext = $item->introtext;
}
}
break;
}
return $link;
}
static function getSlideDescription($slide, $limit) {
$sparams = new JRegistry($slide->params);
if($sparams->get('link_type','')=='article' && empty($slide->description)){ // if article and no description then get introtext as description
if(isset($slide->introtext)) $slide->description = $slide->introtext;
}
$desc = strip_tags($slide->description);
if($limit && $limit - strlen($desc) < 0) {
// don't cut in the middle of the word unless it's longer than 20 chars
if($pos = strpos($desc, ' ', $limit)) $limit = ($pos - $limit > 20) ? $limit : $pos;
// cut text and add dots
$desc = substr($desc, 0, $limit);
if(preg_match('/[a-zA-Z0-9]$/', $desc)) $desc.='…';
$desc = '<p>'.nl2br($desc).'</p>';
} else { // no limit or limit greater than description
$desc = $slide->description;
}
return $desc;
}
private function truncateDescription($text, $limit) {
$text = preg_replace('/{djmedia\s*(\d*)}/i', '', $text);
$desc = strip_tags($text);
if($limit - strlen($desc) < 0) {
// don't cut in the middle of the word unless it's longer than 20 chars
if($pos = strpos($desc, ' ', $limit)) $limit = ($pos - $limit > 20) ? $limit : $pos;
// cut text and add dots
$desc = substr($desc, 0, $limit);
if(preg_match('/[a-zA-Z0-9]$/', $desc)) $desc.='…';
$desc = '<p>'.nl2br($desc).'</p>';
} else { // no limit or limit greater than description
$desc = $text;
}
return $desc;
}
static function getAnimationOptions(&$params) {
$effect = $params->get('effect');
$effect_type = $params->get('effect_type');
if(!is_numeric($duration = $params->get('duration'))) $duration = 0;
if(!is_numeric($delay = $params->get('delay'))) $delay = 3000;
$autoplay = $params->get('autoplay');
if($params->get('slider_type')==2 && !$duration) {
$transition = 'linear';
$duration = 600;
} else switch($effect){
case 'Linear':
$transition = 'linear';
if(!$duration) $duration = 600;
break;
case 'Circ':
case 'Expo':
case 'Back':
if(!$effect_type) $transition = $effect.'.easeInOut';
else $transition = $effect.'.'.$effect_type;
if(!$duration) $duration = 1000;
break;
case 'Bounce':
if(!$effect_type) $transition = $effect.'.easeOut';
else $transition = $effect.'.'.$effect_type;
if(!$duration) $duration = 1200;
break;
case 'Elastic':
if(!$effect_type) $transition = $effect.'.easeOut';
else $transition = $effect.'.'.$effect_type;
if(!$duration) $duration = 1500;
break;
case 'Cubic':
default:
if(!$effect_type) $transition = 'Cubic.easeInOut';
else $transition = 'Cubic.'.$effect_type;
if(!$duration) $duration = 800;
}
$delay = $delay + $duration;
$options = "{auto: $autoplay, transition: Fx.Transitions.$transition, duration: $duration, delay: $delay}";
return $options;
}
static function getSlideTarget($link) {
if(preg_match("/^http/",$link) && !preg_match("/^".str_replace(array('/','.','-'), array('\/','\.','\-'),JURI::base())."/",$link)) {
$target = '_blank';
} else {
$target = '_self';
}
return $target;
}
static function getNavigation(&$params, &$mid) {
$prev = $params->get('left_arrow');
$next = $params->get('right_arrow');
$play = $params->get('play_button');
$pause = $params->get('pause_button');
if($params->get('slider_type')==1) {
if(empty($prev) || !file_exists(JPATH_ROOT.DS.$prev)) $prev = JURI::base().'/modules/mod_djimageslider/assets/up.png';
if(empty($next) || !file_exists(JPATH_ROOT.DS.$next)) $next = JURI::base().'/modules/mod_djimageslider/assets/down.png';
} else {
if(empty($prev) || !file_exists(JPATH_ROOT.DS.$prev)) $prev = JURI::base().'/modules/mod_djimageslider/assets/prev.png';
if(empty($next) || !file_exists(JPATH_ROOT.DS.$next)) $next = JURI::base().'/modules/mod_djimageslider/assets/next.png';
}
if(empty($play) || !file_exists(JPATH_ROOT.DS.$play)) $play = JURI::base().'/modules/mod_djimageslider/assets/play.png';
if(empty($pause) || !file_exists(JPATH_ROOT.DS.$pause)) $pause = JURI::base().'/modules/mod_djimageslider/assets/pause.png';
$navi = (object) array('prev'=>$prev,'next'=>$next,'play'=>$play,'pause'=>$pause);
return $navi;
}
static function getStyleSheet(&$params, &$mid) {
if(!is_numeric($slide_width = $params->get('image_width'))) $slide_width = 240;
if(!is_numeric($slide_height = $params->get('image_height'))) $slide_height = 160;
if(!is_numeric($max = $params->get('max_images'))) $max = 20;
if(!is_numeric($count = $params->get('visible_images'))) $count = 2;
if(!is_numeric($spacing = $params->get('space_between_images'))) $spacing = 0;
if($count<1) $count = 1;
if($count>$max) $count = $max;
if(!is_numeric($desc_width = $params->get('desc_width')) || $desc_width > $slide_width) $desc_width = $slide_width;
if(!is_numeric($desc_bottom = $params->get('desc_bottom'))) $desc_bottom = 0;
if(!is_numeric($desc_left = $params->get('desc_horizontal'))) $desc_left = 0;
if(!is_numeric($arrows_top = $params->get('arrows_top'))) $arrows_top = 100;
if(!is_numeric($arrows_horizontal = $params->get('arrows_horizontal'))) $arrows_horizontal = 5;
switch($params->get('slider_type')){
case 2:
$slider_width = $slide_width;
$slider_height = $slide_height;
$image_width = 'width: 100%';
$image_height = 'height: auto';
$padding_right = 0;
$padding_bottom = 0;
break;
case 1:
$slider_width = $slide_width;
$slider_height = $slide_height * $count + $spacing * ($count - 1);
$image_width = 'width: auto';
$image_height = 'height: 100%';
$padding_right = 0;
$padding_bottom = $spacing;
break;
case 0:
default:
$slider_width = $slide_width * $count + $spacing * ($count - 1);
$slider_height = $slide_height;
$image_width = 'width: 100%';
$image_height = 'height: auto';
$padding_right = $spacing;
$padding_bottom = 0;
break;
}
$desc_width = (($desc_width / $slide_width) * 100);
$desc_left = (($desc_left / $slide_width) * 100);
$desc_bottom = (($desc_bottom / $slide_height) * 100);
$arrows_top = (($arrows_top / $slider_height) * 100);
if($params->get('fit_to')==1) {
$image_width = 'width: 100%';
$image_height = 'height: auto';
} else if($params->get('fit_to')==2) {
$image_width = 'width: auto';
$image_height = 'height: 100%';
}
$css = '
/* Styles for DJ Image Slider with module id '.$mid.' */
#djslider-loader'.$mid.' {
margin: 0 auto;
position: relative;
}
#djslider'.$mid.' {
margin: 0 auto;
position: relative;
height: '.$slider_height.'px;
width: '.$slider_width.'px;
max-width: '.$slider_width.'px;
}
#slider-container'.$mid.' {
position: absolute;
overflow:hidden;
left: 0;
top: 0;
height: 100%;
width: 100%;
}
#djslider'.$mid.' ul#slider'.$mid.' {
margin: 0 !important;
padding: 0 !important;
border: 0 !important;
}
#djslider'.$mid.' ul#slider'.$mid.' li {
list-style: none outside !important;
float: left;
margin: 0 !important;
border: 0 !important;
padding: 0 '.$padding_right.'px '.$padding_bottom.'px 0 !important;
position: relative;
height: '.$slide_height.'px;
width: '.$slide_width.'px;
background: none;
overflow: hidden;
}
#slider'.$mid.' li img {
'.$image_width.';
'.$image_height.';
border: 0 !important;
margin: 0 !important;
}
#slider'.$mid.' li a img, #slider'.$mid.' li a:hover img {
border: 0 !important;
}
';
if($params->get('slider_source') && ($params->get('show_title') || ($params->get('show_desc')))) $css.= '
/* Slide description area */
#slider'.$mid.' .slide-desc {
position: absolute;
bottom: '.$desc_bottom.'%;
left: '.$desc_left.'%;
width: '.$desc_width.'%;
}
#slider'.$mid.' .slide-desc-in {
position: relative;
margin: 0 '.$padding_right.'px '.$padding_bottom.'px 0 !important;
}
#slider'.$mid.' .slide-desc-bg {
position:absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
}
#slider'.$mid.' .slide-desc-text {
position: relative;
}
#slider'.$mid.' .slide-desc-text h3 {
display: block !important;
}
';
if($params->get('show_buttons') || $params->get('show_arrows')) $css .= '
/* Navigation buttons */
#navigation'.$mid.' {
position: relative;
top: '.$arrows_top.'%;
margin: 0 '.$arrows_horizontal.'px;
text-align: center !important;
}
';
if($params->get('show_arrows')) $css .= '
#prev'.$mid.' {
cursor: pointer;
display: block;
position: absolute;
left: 0;
}
#next'.$mid.' {
cursor: pointer;
display: block;
position: absolute;
right: 0;
}
';
if($params->get('show_buttons')) $css .= '
#play'.$mid.',
#pause'.$mid.' {
cursor: pointer;
display: block;
position: absolute;
left: 50%;
}
';
if($params->get('show_custom_nav')) $css .= '
#cust-navigation'.$mid.' {
position: absolute;
top: 10px;
right: 10px;
}
';
return $css;
}
}