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United-Forum Nivo Slider Widget Details »»
United-Forum Nivo Slider Widget
Version: 1.1.0, by Mooff Mooff is offline
Developer Last Online: Nov 2013 Show Printable Version Email this Page

Category: vBulletin CMS Widgets - Version: 4.1.4 Rating:
Released: 07-17-2011 Last Update: 07-18-2011 Installs: 146
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No support by the author.

Based on the Nivo Slider - all credit for slider awesomeness goes to them.
vB4 implementation goes to me.


What it is:
A slider for cms articles, it gets the articles via database, uses (if possible) the previewimage there and resizes it to slider size *update 1.1.0 cropping function included.

Livedemo on a Big Board (>2.000.000 posts)
the nivo slider on our site is customized to fit our heavily customized cms. Default look of this addon is shown in the picture below


facts about the nivo slider
Quote:
Originally Posted by nivo slider homepage
- ~ 600.000 downloads
- 16 transition effects
- a ton of options
- different available themes
- ...
Installation
  • upload all files (attached zip file) in the folder where you do need them - this has to be the same folder you will set via $slider_img_filepath (see picture)


  • create a new php-widget and insert the following code:
    Code:
    // DEBUG MODUS !
    $debug_modus = false;
    
    if($debug_modus === false)
    {
    	ob_start();
    }
    
    //nivo slider - uf - vb.org version
    //set these values as you need them:
    
    //your slider folder - has to be read and writeable
    //folder where all slider files are saved
    $slider_img_filepath = 'external/unitedforum/slider/';   
    
    //picture width and height !same as in the CSS FILE!
    $maxwidth = 650;                                  
    $maxheight = 250;    
    
    //do you want images without previewimage to be shown? slider is using the fallback then
    $show_articles_without_image = false;           
    
    //picture shown if your articles has no previewpicture
    $fallback_img = $slider_img_filepath . 'uf_fallback_slider.png';  
    
    //hardcoded maximum is 20 - if you want more just ask
    $number_of_articles_shown = 10;                                
                
    //lengh in characters of the article descriptions
    $description_length = 95;
    
    //stretch picture or crop them? false = strechting (default) true = cropping (beta)
    $crop = false;
    
    
    //Debug Messages
    if($debug_modus)
    {
    	echo "<span style='color:red;'>DEBUG MODE is ON! </span><br />";
    	echo "slider_img_filepath: $slider_img_filepath <br />";
    	echo "width: $maxwidth   height: $maxheight <br />";
    	echo "Strech or Crop? $crop <br />";
    	echo "show_articles_without_image: "; 
            var_dump($show_articles_without_image); 
            echo " <br />";
    	echo "fallback_img: $fallback_img <br />";
    	echo "#img: $number_of_articles_shown <br />";
    	echo "description_length: $description_length <br />";
    	echo 'directory ' . DIR . '<br />';
    
    }
    
    
    
    
    $article_type = vb_Types::instance()->getContentTypeID("vBCms_Article");
    $time = TIMENOW;
     
    if(!extension_loaded('gd'))
    {
    	echo '<span style="color:red">Error occurred:</span> Your System does not support the GD-Libary. Please install the GD-Libary.<br />';
    }
           
    	$article_get = vB::$db->query_read('
            SELECT
                article.pagetext,
                article.previewimage,
                node.url,
                node.publishdate,
                node.parentnode,
                parentnode.url AS parenturl,
                thread.replycount,
                info.title,
                node.nodeid,            
                GROUP_CONCAT( category.category )
            FROM
                '.TABLE_PREFIX.'cms_article AS article INNER JOIN
                '.TABLE_PREFIX.'cms_node AS node 
                    ON (node.contentid = article.contentid AND node.contenttypeid = ' . vb::$db->sql_prepare($article_type) .') INNER JOIN
                '.TABLE_PREFIX.'cms_nodeinfo AS info 
                    ON info.nodeid = node.nodeid INNER JOIN
                '.TABLE_PREFIX.'cms_node AS parentnode 
                    ON parentnode.nodeid = node.parentnode LEFT JOIN
                '.TABLE_PREFIX.'thread AS thread ON thread.threadid = info.associatedthreadid LEFT JOIN
                '.TABLE_PREFIX.'cms_nodecategory AS nodecategory ON nodecategory.nodeid = node.nodeid LEFT JOIN
                '.TABLE_PREFIX.'cms_category AS category ON nodecategory.categoryid = category.categoryid 
            WHERE
                node.setpublish = 1 AND
                node.publishdate > '. vb::$db->sql_prepare($time) .' -34560000 AND
    			node.publishdate < '. vb::$db->sql_prepare($time) .' 
            GROUP BY node.nodeid
            ORDER BY node.publishdate
            DESC LIMIT 20');
    
        $database_articles = array();
        
        /* my version of sorting the articles via relevance - i'll keep it in case someone is interested*/
        while($article = vB::$db->fetch_array($article_get))
        {
            $article['value'] = ( 5 - ($time - $article['publishdate'] ) / 86400 ) * ( 5 - ($time - $article['publishdate'] ) / 86400 ) * ( 5 - ($time - $article['publishdate'] ) / 86400 ) + (10 * $article['replycount']);
            $database_articles[] = $article;        
        }
        
        foreach($database_articles as $c => $key)
        {
            $sort_value[] = $key['value'];
        }
        
        array_multisort($sort_value, SORT_DESC, $database_articles);    
        
        //
        $i = 0;
        $section_array = array();
        $featured_articles = array();
    	
        foreach($database_articles AS $article)
        {
            $section_array[$article['parentnode']]++;
    
            $categories = explode(',' , $article['GROUP_CONCAT( category.category )']);
         
            if($show_articles_without_image == true OR $article['previewimage'])
            {
                if($section_array[$article['parentnode']] < 50 AND $i < $number_of_articles_shown)
                {
    				if($debug_modus == true OR !file_exists($slider_img_filepath . 'slide_' . $article['nodeid'] . '.jpg'))
    				{
    					//rebuild image to the height and width we want in the slider 
    					//called sprite since i got the code from our sprite addon :P
    					$sprite = imagecreatetruecolor($maxwidth, $maxheight);
    					if(is_resource($sprite) AND $article['previewimage'] )
    					{                   				
    						$imageinfo = getimagesize($article['previewimage']);
    						if(is_array($imageinfo))
    						{   
    							$image = null;
    							switch($imageinfo[2])
    							{
    								case IMAGETYPE_PNG:
    								$image = imagecreatefrompng($article['previewimage']);
    								break;
    								case IMAGETYPE_GIF:
    								$image = imagecreatefromgif($article['previewimage']);
    								break;
    								case IMAGETYPE_JPEG:
    								$image = imagecreatefromjpeg($article['previewimage']);
    								break;
    								default:
    								echo '<span style="color:red">Error occurred:</span> Unknown image format. ' . $article['previewimage']. '<br />';
    								break;                        
    							}
    							
    							if(!is_resource($image))
    							{
    								//resiziing did not work - we are using the fallback image.
    								echo '<span style="color:red">Error occurred:</span> imagecreation failed. ' . $article['previewimage']. '<br />';
    								$article['previewimage'] = $fallback_img;
    							}
    							else
    							{
    								$img_width = $imageinfo[0];
    								$img_height = $imageinfo[1];							
    								
    								if($crop == false)
    								{									
    									imagecopyresampled($sprite, $image, 0, 0, 0, 0, $maxwidth, $maxheight, $img_width, $img_height );
    									imagedestroy($image);
    								}
    								else
    								{
    									//cropping
    									$ratiox = $maxheight / $img_height ;
    									$ratioy = $maxwidth / $img_width ;
    									$new_height = $img_height;
    									$new_width = $img_width;
    									
    									if ($maxheight > $img_height OR $maxwidth > $img_width)
    									{
    										if($ratiox > $ratioy)
    										{
    											$new_height = round($img_height * $ratiox);
    											$new_width = round($img_width * $ratiox);
    										}
    										else
    										{
    											$new_height = round($img_height * $ratioy);
    											$new_width = round($img_width * $ratioy);
    										}										
    									}
    									$cropx = $new_height - $maxheight;
    									$cropy = $new_width - $maxwidth;
    									
    									imagecopyresampled($sprite, $image, 0, 0, 0, 0, $new_width, $new_height, $img_width, $img_height);
    									imagedestroy($image);
    									
    								}
    								
    								
    								$img_filepath = $slider_img_filepath . 'slide_' . $article['nodeid'] . '.jpg';
    								$success = imagejpeg($sprite, DIR  . ($img_filepath[0] != DIRECTORY_SEPARATOR ?  DIRECTORY_SEPARATOR : '') . $img_filepath);
    								imagedestroy($sprite);
    								if($success)
    								{
    									$article['previewimage'] = $img_filepath;
    								}
    								else
    								{
    									$img_filepath = DIR  . ($img_filepath[0] != DIRECTORY_SEPARATOR ?  DIRECTORY_SEPARATOR : '') . $img_filepath;
    									echo '<span style="color:red">Error occurred:</span> imagejpeg failed. ' . $article['previewimage']. '<br />
    									directory: '. $img_filepath ;
    									
    									$article['previewimage'] = $fallback_img;
    								}
    							}
    							
    						}
    						else
    						{
    							//resiziing did not work - we are using the fallback image.
    							echo '<span style="color:red">Error occurred:</span> picture is not readable.' . $article['previewimage']. '<br /> ';
    							$article['previewimage'] = $fallback_img;
    						}                  
    					}
    					else
    					{
    						//resiziing did not work - we are using the fallback image.
    						echo '<span style="color:red">Warning:</span> article has no previewimage or sprite is no ressource. ' . $article['previewimage']. '<br />';
    						$article['previewimage'] = $fallback_img;
    					}
    				}
    				else
    				{
    					//we already have the image, no need to resize or crop anything
    					$article['previewimage'] = $slider_img_filepath . 'slide_' . $article['nodeid'] . '.jpg';
    				}
    
                    /*remove everything from the previewtext - html and bb. I do not want bold or colored text there. Cut to a decent length.*/        
                    $article['pagetext'] = strip_bbcode($article['pagetext'], true, true, false, true, false);
    
                    $article['previewtext'] = strip_tags($article['pagetext'], '<a>');
                        
                    $len = $description_length;
                    if ( strlen($article['previewtext']) > $len )
                    {                    
                        $article['previewtext'] = substr( $article['previewtext'] , 0 , strrpos( substr( $article['previewtext'], 0, $len), ' ' ));
                    }   
    
                    $i++;
                    //Build Array
                    $article_neu = array();
                    $article_neu['description'] = '<h2 style="font-weight:bold; font-size: 14px">'. $article['title'].'</h2><span>'. $article['previewtext'] .'</span> <a href="/content.php?r=' . $article['nodeid'] . '-' . $article['url'] . '">read on</a>';
                    $article_neu['htmlcaptionname'] = 'htmlcaption' . $article['nodeid'] ;
                    $article_neu['picture'] = '<a href="/content.php?r=' . $article['nodeid'] . '-' . $article['url'] . '"><img src="'.$article['previewimage'].'" alt="" title="#htmlcaption'. $article['nodeid'] . '" /></a>';
                    
                    $featured_articles[] = $article_neu;
                }
            }
        }
        
        //Randomize Array
        //shuffle($featured_articles);
    
    	//Debug Messages
    	if($debug_modus)
    	{
    		echo '#articles - featured and databasepull ';
    		var_dump(count($featured_articles));
    		var_dump(count($database_articles));
    	}
    
        
    $output_bits = '
        <link rel="stylesheet" href="' .$slider_img_filepath. 'nivo-slider.css" type="text/css" media="screen" />
        <link rel="stylesheet" href="' .$slider_img_filepath. 'nivo-slider_uf_theme.css" type="text/css" media="screen" />
        <div style="height:' . $maxheight . 'px;">
        <div id="wrapper">
            <div class="slider-wrapper theme-uf">
                <div class="ribbon"></div>
                <div id="slider" class="nivoSlider">';
                
                    foreach($featured_articles AS $article)
                    {
                        $output_bits .= $article['picture'];
                    }
                $output_bits .= '
                </div>';
                
                foreach($featured_articles AS $article)
                {
                    $output_bits .= '<div id="' . $article['htmlcaptionname'] . '" class="nivo-html-caption">' . $article['description'] .'</div>';
                }
                
                $output_bits .= '         
            </div>
    
        </div>
        <script type="text/javascript" src="' .$slider_img_filepath. 'jquery-1.6.1.min.js"></script>
        <script type="text/javascript" src="' .$slider_img_filepath. 'jquery.nivo.slider.pack.js"></script>
        <script type="text/javascript">
        $(window).load(function() {
            $("#slider").nivoSlider();
        });
        </script>
        </div>
        ';
            $output = $output_bits;
     
    if($debug_modus === false)
    {
    	ob_end_clean();        
    }
  • set refresh time to something big!
  • save - add the widget to your layout - enjoy


Custom settings:

At the top of the php-widget code you can see the following:
Code:
// DEBUG MODUS !
$debug_modus = false;

if($debug_modus === false)
{
	ob_start();
}

//nivo slider - uf - vb.org version
//set these values as you need them:

//your slider folder - has to be read and writeable
//folder where all slider files are saved
$slider_img_filepath = 'external/unitedforum/slider/';   

//picture width and height !same as in the CSS FILE!
$maxwidth = 650;                                  
$maxheight = 250;    

//do you want images without previewimage to be shown? slider is using the fallback then
$show_articles_without_image = false;           

//picture shown if your articles has no previewpicture
$fallback_img = $slider_img_filepath . 'uf_fallback_slider.png';  

//hardcoded maximum is 20 - if you want more just ask
$number_of_articles_shown = 5;                                
            
//lengh in characters of the article descriptions
$description_length = 95;
If you change $maxwidth and $maxheight you need to edit the nivo-slider_uf_theme.css file, here:
Code:
.theme-uf #slider {
    margin:0px auto 0 auto;
    width:650px; /* Make sure your images are the same size */
    height:250px; /* Make sure your images are the same size */
}
Width and height have to be the same value in your php-widget and in the css file.

In additon to these settings i also included a "value/relevance function". Meaning the slider doesn't show your latest 5 articles, but instead weights them based on age and comments.

As older an article is the less likely it will show up in the slider.
More comments make it more likely.

This behaviour can be easily changed. I didn't include an if condition cause every board has different needs and i don't know whats best for you.
In addition conditions like "articles just from this section - or these sections, or this category, with a minimum of 10 posts" can be included via one single if condition. Again, i don't know what your board needs or what your category names are.

You can also modify the preview length (more words, less words), the preview style (color fontsize, fontweight .... Again different forums different needs. It's highly customizable.
Support:

Support and requests for the slider itself should be asked here http://nivo.dev7studios.com/
Same goes for different slider themes - a lot is possible, even thumbnails - again this is part of the nivo slider and not the vb4 implementation.

If you have any questions regarding the settings - or want different settings (which have to do with vb4) - ask, and i'll try to come up with some code // show you where you have to put what.


Slider not working. No idea why?

You will find a FAQ in the first comment, which will be kept up to date:
FAQ


The widget here is completely free. No charge, no branding.
But, we do not mind donations either. If you want to give us something. Since we are advertising free and fan based we are happy about every small donation.
( On Forumhome bottom right paypal button: http://www.united-forum.de/forum.php )



That's all
Hope it works for you.
Regards Mooff

Download Now

File Type: zip uf_nivo_slider.zip (65.6 KB, 1507 views)

Screenshots

File Type: jpg install.jpg (90.8 KB, 0 views)
File Type: jpg uf_nivo_slider_promo.jpg (119.2 KB, 0 views)

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  • This modification may not be copied, reproduced or published elsewhere without author's permission.
13 благодарности(ей) от:
AaronMiller, Aramist, doctorsexy, Gemma, LOGECT, mitch84, nacaruncr, owning_y0u, RaSa, Sage Knight, The Rocketeer, YkudzA

Comments
  #152  
Old 08-14-2011, 10:14 PM
GamersChallenge GamersChallenge is offline
 
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DEBUG MODE is ON!
slider_img_filepath: slider/
width: 650 height: 250
show_articles_without_image: bool(false)
fallback_img: slider/uf_fallback_slider.png
#img: 7
description_length: 95
directory /home/gamersch/public_html

Warning: getimagesize() [function.getimagesize]: URL file-access is disabled in the server configuration in [path]/packages/vbcms/widget/execphp.php(191) : eval()'d code on line 128

Warning: getimagesize(http://gamerschallenge.net/attachmen...=39&amp;cid=24) [function.getimagesize]: failed to open stream: no suitable wrapper could be found in [path]/packages/vbcms/widget/execphp.php(191) : eval()'d code on line 128
Error occurred: picture is not readable.slider/uf_fallback_slider.png

Warning: getimagesize() [function.getimagesize]: URL file-access is disabled in the server configuration in [path]/packages/vbcms/widget/execphp.php(191) : eval()'d code on line 128

Warning: getimagesize(http://gamerschallenge.net/attachmen...=40&amp;cid=24) [function.getimagesize]: failed to open stream: no suitable wrapper could be found in [path]/packages/vbcms/widget/execphp.php(191) : eval()'d code on line 128
Error occurred: picture is not readable.slider/uf_fallback_slider.png

Warning: getimagesize() [function.getimagesize]: URL file-access is disabled in the server configuration in [path]/packages/vbcms/widget/execphp.php(191) : eval()'d code on line 128

Warning: getimagesize(http://gamerschallenge.net/attachmen...=38&amp;cid=24) [function.getimagesize]: failed to open stream: no suitable wrapper could be found in [path]/packages/vbcms/widget/execphp.php(191) : eval()'d code on line 128
Error occurred: picture is not readable.slider/uf_fallback_slider.png

Warning: getimagesize() [function.getimagesize]: URL file-access is disabled in the server configuration in [path]/packages/vbcms/widget/execphp.php(191) : eval()'d code on line 128

Warning: getimagesize(http://gamerschallenge.net/attachmen...=37&amp;cid=24) [function.getimagesize]: failed to open stream: no suitable wrapper could be found in [path]/packages/vbcms/widget/execphp.php(191) : eval()'d code on line 128
Error occurred: picture is not readable.slider/uf_fallback_slider.png

Warning: getimagesize() [function.getimagesize]: URL file-access is disabled in the server configuration in [path]/packages/vbcms/widget/execphp.php(191) : eval()'d code on line 128

Warning: getimagesize(http://gamerschallenge.net/attachmen...=36&amp;cid=24) [function.getimagesize]: failed to open stream: no suitable wrapper could be found in [path]/packages/vbcms/widget/execphp.php(191) : eval()'d code on line 128
Error occurred: picture is not readable.slider/uf_fallback_slider.png
#articles - featured and databasepull int(5) int(5)
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  #153  
Old 08-14-2011, 10:40 PM
Mooff Mooff is offline
 
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Default

that is the error:
Code:
URL file-access is disabled in the server configuration
The slider gets all pictures via http - attachments and external images. In your server configuration that is disabled. So the slider can't load and resize those picture to the size it does need.

Best is to ask the techadmin of your server what setting does cause this, why it is off and if it can be activated.

If it can't be activated an option would be not to resize the pictures at all - BUT then the slider will look odd if the pictures do not have the required width and height the slider needs.
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  #154  
Old 08-14-2011, 11:08 PM
GamersChallenge GamersChallenge is offline
 
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alright, I opened a support ticket to my host provider since I couldnt find such an option in my cpanel.

URL file-access is now enable and slider works fine.

thanx for the support.

nominated this mod for MOTM.
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  #155  
Old 08-15-2011, 04:45 AM
theoutlawed's Avatar
theoutlawed theoutlawed is offline
 
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works fine on 4.1.5 pl1

thanks for the killer slider mod.
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  #156  
Old 08-15-2011, 11:41 AM
msalazar msalazar is offline
 
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It didint wwork for me something must be wrong with my installation
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  #157  
Old 08-15-2011, 01:36 PM
andycaps andycaps is offline
 
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My admin members have asked me to remove the slider because of the 1) size of the frame and 2) how the frame stretches the images.

A lot of my contributes are writers and have trouble re-sizing images to match the slider frame, thus a lot of their images look very poor when in reality they are just not the same size as the frame. Is there any way to display the images as they should be, appreciate some of the images may be small but at least they will not be stretched. BETTER still - is there are way of automatically resizing the image to say a maximum hight of say 300 pixels?
thanks
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  #158  
Old 08-15-2011, 02:12 PM
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Scalemotorcars Scalemotorcars is offline
 
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Well Ive read the entire thread and tried all the fixed. I just got off the phone with my host and they will NOT be turning (URL file-access) back on and they suggested using an alternative.

They of course didn't offer any further help then that so I hope someone here can help me get this sorted out.

With debug on I get the errors at the bottom of this post only once they they vanish after visiting another url. If I clear the cache they come right back or if I refresh the page they stay at the top. The slider seems to be working fine except for the fact that it doesnt pull any attachments and I do not see any images saved in my slider folder.

Attachments for guests are on both in usergroups and CMS
Folder is 777
Path is correct
I changes the size but also changed it in the CSS

HTML Code:
DEBUG MODE is ON! 
slider_img_filepath: clientscript/slider/ 
width: 975 height: 250 
show_articles_without_image: bool(false) 
fallback_img: clientscript/slider/uf_fallback_slider.png 
#img: 20 
description_length: 95 
directory /home/p16t2ugb/public_html/forum

Warning: getimagesize() [function.getimagesize]: URL file-access is disabled in the server configuration in [path]/packages/vbcms/widget/execphp.php(191) : eval()'d code on line 129

Warning: getimagesize(http://www.scalemotorcars.com/forum/attachment.php?attachmentid=16072&amp;cid=24) [function.getimagesize]: failed to open stream: no suitable wrapper could be found in [path]/packages/vbcms/widget/execphp.php(191) : eval()'d code on line 129
Error occurred: picture is not readable.clientscript/slider/uf_fallback_slider.png

Warning: getimagesize() [function.getimagesize]: URL file-access is disabled in the server configuration in [path]/packages/vbcms/widget/execphp.php(191) : eval()'d code on line 129

Warning: getimagesize(http://www.scalemotorcars.com/forum/attachment.php?attachmentid=15949&amp;cid=24) [function.getimagesize]: failed to open stream: no suitable wrapper could be found in [path]/packages/vbcms/widget/execphp.php(191) : eval()'d code on line 129
Error occurred: picture is not readable.clientscript/slider/uf_fallback_slider.png

Warning: getimagesize() [function.getimagesize]: URL file-access is disabled in the server configuration in [path]/packages/vbcms/widget/execphp.php(191) : eval()'d code on line 129

Warning: getimagesize(http://www.scalemotorcars.com/forum/attachment.php?attachmentid=15946&amp;cid=24) [function.getimagesize]: failed to open stream: no suitable wrapper could be found in [path]/packages/vbcms/widget/execphp.php(191) : eval()'d code on line 129
Error occurred: picture is not readable.clientscript/slider/uf_fallback_slider.png

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  #159  
Old 08-15-2011, 02:14 PM
Mooff Mooff is offline
 
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@ andycaps

First post section "Custom Settings"

Make changes here
Code:
//picture width and height !same as in the CSS FILE!
$maxwidth = 650;                                  
$maxheight = 250;
and here
Code:
.theme-uf #slider {
    margin:0px auto 0 auto;
    width:650px; /* Make sure your images are the same size */
    height:250px; /* Make sure your images are the same size */
}
You can change those numbers any way you like to match your site needs.

Different sizes for each image is not supported by the nivo slider - well it can be done, but does look horrible.


Of course additional rules for the resizing process can also be added. Let's say pictures is smaller than 200px -> it won't be used and the slider takes the fallback image instead (that's basecially how we do it on our site). As said in the first post, if one wants something special, just ask - i will try to come up with some code, but won't promise i will.
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  #160  
Old 08-15-2011, 02:42 PM
Mooff Mooff is offline
 
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Quote:
Originally Posted by Scalemotorcars View Post
Well Ive read the entire thread and tried all the fixed. I just got off the phone with my host and they will NOT be turning (URL file-access) back on and they suggested using an alternative.

They of course didn't offer any further help then that so I hope someone here can help me get this sorted out.
Sorry to hear that.

An idea would be to use cURL instead especially for attachments. Meaning 'reparsing' the previewimage when it is an attachment to get the attachment id, then starting a curl request to the attachment.php file and send the id as post/get value.

With such a fix attachments should start working even with allow_url_include disabled.

But, and i'm sorry to say that, i won't code that - just wanted to add the idea if one want's to take a shot at it.

Regards


edit: another option would be disableing the image resize process. Then you should make sure that your attachments are allready uploaded in the size the slider does need.
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  #161  
Old 08-15-2011, 02:59 PM
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Scalemotorcars Scalemotorcars is offline
 
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So theres no other fix if the host refuses to turn of the URL file-access? I haven't a clue how to recode for curl.

And for the re-size. I already got that in both.
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