function __construct() {

parent::__construct(false, $name = __( 'WP S3 Slider Widget', 'bpmag' ) );

}

function widget($args, $instance) {

extract( $args );

echo $before_widget;

if(!empty($instance['title']))

echo $before_title. $instance['title']. $after_title;

else if(function_exists("bpmag_get_theme_option"))

echo "<div class=\"widget-content\">";//allow hiding of title in bpmag

//noww check which slideshow is available and output that

do_action("bpmag_s3_content");

//if ( function_exists('show_nivo_slider') )

// show_nivo_slider();

$inc_list=BPMag_Slideshow_Widget::find_included_cats($instance);

$included=join(",",$inc_list);

BPMag_Slideshow_Widget::show_posts($included,$instance);

// BPMag_Slideshow_Widget::show_posts();

echo $after_widget;

}

function update( $new_instance, $old_instance ) {

$instance=$old_instance;

//$instance["num_links"]=intval($new_instance["num_links"]);

$instance["num_posts"]=intval($new_instance["num_posts"]);

$instance["title"]=$new_instance["title"];

$instance["overlay_position"]=$new_instance["overlay_position"];

$instance["height"]=$new_instance["height"];

$instance["width"]=$new_instance["width"];

$instance["timeout"]=$new_instance["timeout"];

$cat_ids=get_all_category_ids();

foreach($cat_ids as $cat_id)

$instance["cat_id_".$cat_id]=$new_instance["cat_id_".$cat_id];

return $instance;

}

function form($instance){

$instance=wp_parse_args((array)$instance,array("title"=>"S3 Slideshow","num_posts"=>5,"timeout"=>4000,"overlay_position"=>"bottom","width"=>620,"height"=>260));

$title=strip_tags($instance["title"]);

$timeout=intval($instance["timeout"]);

$height=intval($instance["height"]);

$width=intval($instance["width"]);

$num_posts=intval($instance["num_posts"]);

$overlay_position=$instance["overlay_position"];

$cat_ids=get_all_category_ids();?>

<p>

<label for="slide-widget-title"><?php _e('Title:', 'bpmag'); ?>

<input class="widefat" id="<?php echo $this->get_field_id( 'title' ); ?>" name="<?php echo $this->get_field_name( 'title' ); ?>" type="text" value="<?php echo esc_attr( stripslashes( $title ) ); ?>" />

</label>

</p>

<p>

<label for="slide-widget-max-posts"><?php _e( 'Maximum No. of Posts to show' , 'bpmag'); ?>

<input type="text" id="<?php echo $this->get_field_id( 'num_posts' ); ?>" name="<?php echo $this->get_field_name( 'num_posts' ); ?>" class="widefat" value="<?php echo esc_attr( absint( $num_posts ) ); ?>" />

</label>

</p>

<p>

<label for="slide-widget-overlay-position"><?php _e( 'Overlay Posiion' , 'bpmag'); ?>

<select name="<?php echo $this->get_field_name( 'overlay_position' ); ?>" id="<?php echo $this->get_field_id( 'overlay_position' ); ?>"">

<option class="widefat" value="left" <?php if($overlay_position=="left"):?> selected="selected" <?php endif;?>>Left</option>

<option class="widefat" value="right" <?php if($overlay_position=="right"):?> selected="selected" <?php endif;?> >Right</option>

<option class="widefat" value="top" <?php if($overlay_position=="top"):?> selected="selected" <?php endif;?> >Top</option>

<option class="widefat" value="bottom" <?php if($overlay_position=="bottom"):?> selected="selected" <?php endif;?> >Bottom</option>

</select>

</label>

</p>

<p>

<label for="slide-widget-max-posts"><?php _e( 'Transition delay(In mili seconds)' , 'bpmag'); ?>

<input type="text" id="<?php echo $this->get_field_id( 'timeout' ); ?>" name="<?php echo $this->get_field_name( 'timeout' ); ?>" class="widefat" value="<?php echo esc_attr( absint( $timeout ) ); ?>" />

</label>

</p>

<p>

<label for="slide-widget-image-width"><?php _e( 'Image Width' , 'bpmag'); ?>

<input type="text" id="<?php echo $this->get_field_id( 'width' ); ?>" name="<?php echo $this->get_field_name( 'width' ); ?>" class="widefat" value="<?php echo esc_attr( absint( $width ) ); ?>" />px

</label>

</p>

<p>

<label for="slide-widget-max-posts"><?php _e( 'Image height' , 'bpmag'); ?>

<input type="text" id="<?php echo $this->get_field_id( 'height' ); ?>" name="<?php echo $this->get_field_name( 'height' ); ?>" class="widefat" value="<?php echo esc_attr( absint( $height ) ); ?>" />px

</label>

</p>

<p>

<label for="featured-posts-widget-id"><?php _e( 'Check Categories to Include' , 'bpmag'); ?> </label>

<?php

// $cats=get_categories();

//print_r($cats);

foreach($cat_ids as $cat_id){//show the form

$name=$this->get_field_name( 'cat_id_'.$cat_id );

$opt_id=$this->get_field_id( 'cat_id_'.$cat_id );

$checked=0;

$key='cat_id_'.$cat_id ;

//print_r($instance);

if(array_key_exists($key,$instance)&&$instance[$key ]=="yes")

$checked=true;

?>

<label style="padding:5px;display:block;float:left;">

<input type="checkbox" name="<?php echo $name; ?>" id="<?php $opt_id;?>" value="yes" <?php if($checked) echo "checked='checked'" ;?>/>

<?php echo get_cat_name($cat_id);?>

</label>

<?php

}

?>

</p>

<?php

//for showing the form code

}

//helper function to find the excluded categories

function find_included_cats($instance){

//instance of current width

$cat_ids=get_all_category_ids();

$included=array();

foreach($cat_ids as $cat_id){

$key="cat_id_".$cat_id;

if(array_key_exists($key,$instance)&&$instance[$key]=="yes")

$included[]=$cat_id;

}

return $included;

}

function show_posts($categories,$instance){?>

<div id="slider">

<?php

$rp=new WP_Query();

$rp->query( array('cat'=>$categories,'posts_per_page'=>$instance['num_posts'],'meta_key'=>'_thumbnail_id' ));

if( $rp->have_posts() ) :?>

<ul id="sliderContent">

<?php while( $rp->have_posts() ) : $rp->the_post(); ?>

<?php if(has_post_thumbnail()) : ?>

<li class="sliderImage">

<a href="<?php the_permalink(); ?>" title="<?php the_title(); ?>">

<img src="<?php echo bp_s3_get_custom_image_url(get_the_ID(),$instance['width'],$instance['height'] );?>" alt="<?php the_title_attribute();?>" />

</a>

<div class="<?php echo $instance['overlay_position'];?>"><strong><?php the_title();?></strong><br /><?php the_excerpt();?></div>

</li>

<?php endif;endwhile; ?>

</ul>

<?php endif;?>

<script type="text/javascript">

jQuery(document).ready(function() {

jQuery('#slider').s3Slider({

timeOut: <?php echo $instance['timeout'];?>

});

});

</script>

</div>

<?php

}

$meta_key="slide_image".$height."x".$width;//we have a unique key like slide_image200x300;

$image_url=get_post_meta($post_id, $meta_key, true);

if(!empty ($image_url))

return $image_url;

//if we are here, the image was not generated and stored earlier, right

$thumb = get_post_thumbnail_id($post_id);

$image = vt_resize( $thumb,'' , $width, $height, $crop);

if(!empty($image)){

$image_url=$image['url'];

update_post_meta($post_id, $meta_key, $image_url);//store for later use

}

//if $image_ur, return it otherwise single post thumbnail

if($image_url)

return $image_url;

//else

// return get_the_post_thumbnail( $post_id, 'single-post-thumbnail');

// this is an attachment, so we have the ID

if ( $attach_id ) {

$image_src = wp_get_attachment_image_src( $attach_id, 'full' );

$file_path = get_attached_file( $attach_id );

// this is not an attachment, let's use the image url

} else if ( $img_url ) {

$file_path = parse_url( $img_url );

$file_path = $_SERVER['DOCUMENT_ROOT'] . $file_path['path'];

//$file_path = ltrim( $file_path['path'], '/' );

//$file_path = rtrim( ABSPATH, '/' ).$file_path['path'];

$orig_size = getimagesize( $file_path );

$image_src[0] = $img_url;

$image_src[1] = $orig_size[0];

$image_src[2] = $orig_size[1];

}

$file_info = pathinfo( $file_path );

$extension = '.'. $file_info['extension'];

// the image path without the extension

$no_ext_path = $file_info['dirname'].'/'.$file_info['filename'];

$cropped_img_path = $no_ext_path.'-'.$width.'x'.$height.$extension;

// checking if the file size is larger than the target size

// if it is smaller or the same size, stop right here and return

if ( $image_src[1] > $width || $image_src[2] > $height ) {

// the file is larger, check if the resized version already exists (for $crop = true but will also work for $crop = false if the sizes match)

if ( file_exists( $cropped_img_path ) ) {

$cropped_img_url = str_replace( basename( $image_src[0] ), basename( $cropped_img_path ), $image_src[0] );

$vt_image = array (

'url' => $cropped_img_url,

'width' => $width,

'height' => $height

);

return $vt_image;

}

// $crop = false

if ( $crop == false ) {

// calculate the size proportionaly

$proportional_size = wp_constrain_dimensions( $image_src[1], $image_src[2], $width, $height );

$resized_img_path = $no_ext_path.'-'.$proportional_size[0].'x'.$proportional_size[1].$extension;

// checking if the file already exists

if ( file_exists( $resized_img_path ) ) {

$resized_img_url = str_replace( basename( $image_src[0] ), basename( $resized_img_path ), $image_src[0] );

$vt_image = array (

'url' => $resized_img_url,

'width' => $proportional_size[0],

'height' => $proportional_size[1]

);

return $vt_image;

}

}

// no cache files - let's finally resize it

$new_img_path = image_resize( $file_path, $width, $height, $crop );

$new_img_size = getimagesize( $new_img_path );

$new_img = str_replace( basename( $image_src[0] ), basename( $new_img_path ), $image_src[0] );

// resized output

$vt_image = array (

'url' => $new_img,

'width' => $new_img_size[0],

'height' => $new_img_size[1]

);

return $vt_image;

}

// default output - without resizing

$vt_image = array (

'url' => $image_src[0],

'width' => $image_src[1],

'height' => $image_src[2]

);

return $vt_image;