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--- english:phpwcms_replacer_rts:frontend_render:random-image-from-folder [2010/03/25 10:13]
Knut Heermann (flip-flop)
+++ english:phpwcms_replacer_rts:frontend_render:random-image-from-folder [2018/06/03 18:09] (current)
@@ Line 24: / Line 24: @@
 **Forum:** [[http://forum.phpwcms.org/viewtopic.php?p=123473#p123473|[Css trick] Random background image]]
-**Author:** P. Bracher //(breitsch)// [[http://www.webrealisierung.ch|Webrealisierung GmbH]] | The incredible module page: [[http://web.casa-loca.com/index.php?googlemaps|phpwcms module]]  \\
+**Author:** P. Bracher //(breitsch)// [[http://www.webrealisierung.ch|Webrealisierung GmbH]] \\
 **Version:**  V1.0 22.03.10
@@ Line 44: / Line 44: @@
 -> **{RAND_IMG_FROM_FOLDER:23::}**
-= Thumb image generated from file center folder ID=23, //(Image size: conf.inc.php -> %%$phpwcms['img_list_width'],
+= Thumb image generated from file center folder ID=23, \\
-$phpwcms['img_list_height']%%)//.
+= Image size: conf.inc.php -> %%$phpwcms['img_list_width'], $phpwcms['img_list_height']%%.
 \\
@@ Line 52: / Line 52: @@
 -> **{RAND_IMG_FROM_FOLDER:23:.random-image:}** \\
-= Image generated from file center folder ID=23, class generated ''%%.random-image { (background-image: (url('content/images/xxxyyyzzz.jpg'); }%%'' //(inline css)// //(Image size: original)//.
+= Image generated from file center folder ID=23, \\
+= class generated: ''%%.random-image { (background-image: (url('content/images/xxxyyyzzz.jpg'); }%%'' //(css in head element)// \\
+= Image size: original.
 \\
@@ Line 58: / Line 60: @@
 -> **{RAND_IMG_FROM_FOLDER:23::400x300x1 My Image}**
-= Image generated from file center folder ID=23, 400x300px cropped with the alt text "My Image" //(Image size: max. page length 400x300px)//.
+= Image generated from file center folder ID=23, \\
+= 400x300px cropped with the alt text "My Image" \\
+= Image size: absolute page length 400x300px //(cropped)//.
+E.g. in a link -> HTML: ''%%<a href="index.php?category01">{RAND_IMG_FROM_FOLDER:36::100x150 ALT-Text}</a>%%''
 \\
@@ Line 65: / Line 71: @@
 -> **{RAND_IMG_FROM_FOLDER:23:.random-image:400x300}**
-= Image generated from file center folder ID=23, class generated ''%%.random-image { (background-image: (url('content/images/xxxyyyzzz.jpg'); }%%'' //(inline css)// //(Image size: max. page length 400x300px)//.
+= Image generated from file center folder ID=23, \\
+= class generated: ''%%.random-image { (background-image: (url('content/images/xxxyyyzzz.jpg'); }%%'' //(css in head element)// \\
+= Image size: max. page length 400x300px).
 \\
--- ##{RAND_IMG_FROM_FOLDER:ID of PHPWCMS Folder:HTML tag:WxHxCROPxQUALITY}## \\
--> **{RAND_IMG_FROM_FOLDER:23:b:400x300}**
-= mage generated from file center folder ID=23, definition for HTML-element generated ''%%b { (background-image: (url('content/images/xxxyyyzzz.jpg'); }%%'' //(inline css)// //(Image size: max. page length 400x300px)//.
+-- ##{RAND_IMG_FROM_FOLDER:ID of PHPWCMS Folder:CSS_CLASS:WxHxCROPxQUALITY}## \\
+-> **{RAND_IMG_FROM_FOLDER:23:.random-image:400x300}**
+= Image generated from file center folder ID=23, \\
+= class generated: ''%%.random-image { (background-image: (url('content/images/xxxyyyzzz.jpg'); }%%'' //(css in head element)// \\
+= Image size: max. page length 400x300px) //(cropped)//.
+E.g. HTML: ''%%<div class="random-image" style="width:300px; height:300px; overflow:hidden;"><!--nop//--></div>%%''
 \\
+-- ##{RAND_IMG_FROM_FOLDER:ID of PHPWCMS Folder:HTML tag:WxHxCROPxQUALITY}## \\
+-> **{RAND_IMG_FROM_FOLDER:23:b:400x300x1}**
+= Image generated from file center folder ID=23, \\
+= definition for HTML-element generated: ''%%b { (background-image: (url('content/images/xxxyyyzzz.jpg'); }%%'' //(css in head element)// \\
+=  Image size: absolute page length 400x300px.
+E.g. HTML: ''%%<div><b style="width:400px; height:300px; display:block">Text overlay</b></div>%%''
+\\
+-- ##{RAND_N_IMG_FROM_FOLDER:ID of PHPWCMS Folder:Number of Files:Lightbox WxHxCROPxQUALITY:WxHxCROPxQUALITY Alt Text}## \\
+-> **{RAND_N_IMG_FROM_FOLDER:23:5:800x800x0x100:x125 My Image}**
+= generates 5 images from file center folder ID=23, \\
+= images scaled to height of 125px, with alt-Text "My Image" \\
+= images linked to lightbox with max. height or width of 800px (see. Lightbox requirement) \\
 ==== Find the folder ID ====
@@ Line 237: / Line 266: @@
 </code>
+===== Multiple Images =====
+If more than one random image is retrieved using RAND_IMG_FROM_FOLDER, the same picture might be shown several times. As an Alternative, the variation RAND_N_IMG_FROM_FOLDER can be used:
+{RAND_N_IMG_FROM_FOLDER:<<folder id>>:<<number of images>>:<<lightbox size params>>:<<WxHxCROPxQUALITY ALT-Text>>}
+With
+  * <<folder id>> = ID of PHPWCMS Folder
+  * <<number of images>> = number of images to select (if folder contains fewer images, just these are displayed)
+  * <<lightbox size params>> = if used, WxHxCROPxQUALITY for lightbox. If empty, no lightbox is created
+  * <<WxHxCROPxQUALITY ALT-Text>> = size and alt text of images
+=== Code ===
+- developed and tested on phpwcms 1.5.3 (2012/04/26, r471)
+**Location:** /template/inc_script/frontend_render/random_multi_images_from_folder.php
+<code php |h {RAND_N_IMG_FROM_FOLDER:ID:number ...}|h >
+    <?php
+    /* ===========================================================================================
+       get a number of random images from a folder V1.0  01.06.2012 thoblerone
+       ===========================================================================================
+       basiert auf
+       random image from folder V1.0  22.03.10  breitsch http://www.webrealisierung.ch
+       -> {RAND_IMG_FROM_FOLDER:ID of PHPWCMS Folder:CSS_CLASS or HTML tag:WxHxCROPxQUALITY ALT-Text}
+       The original script in /include/inc_front/ext.func.inc.php  programmed by (c) Oliver Georgi
+.03.10  patched and swaped out to /frontend_render/* by breitsch partially copied from
+       imgx V1.0  03.01.09 by K.Heermann (flip-flop)
+       Tag:
+       {RAND_N_IMG_FROM_FOLDER:<<folder id>>:<<number of images>>:<<lightbox size params>>:<<WxHxCROPxQUALITY ALT-Text>>}
+       folder ID                 = the ID number of the Folder in the phpwcms file browser - required
+       number of images          = the number of images to create. Will create max. the number of files in specified folder
+       lightbox size params      = Dimensions, cropping and render quality for lightbox image style is WxHxCROPxQUALITY
+                                   lightbox popup relies on lightbox script and css include somewhere on your webpage.
+                            <!-- CSS: template/lib/slimbox/slimbox.css -->
+                            <!-- JS: template/lib/slimbox/slimbox.mootools-1.3.js -->
+                                   leave lightbox size params empty for no lightbox
+       WxHxCROPxQUALITY ALT-Text = Dimensions and alt text of the image (alt text only when not used as background image)
+                                   if empty and css background image it takes the original dimensions of the image
+                                   if empty and not css background image it takes the preview dimensions for the images
+    ============================================================================================= */
+    // ----------------------------------------------------------------
+    // obligate check for phpwcms constants
+    if (!defined('PHPWCMS_ROOT')) {
+       die("You Cannot Access This Script Directly, Have a Nice Day."); }
+    // ----------------------------------------------------------------
+    if( strpos($content['all'], '{RAND_N_IMG_FROM_FOLDER:') !== FALSE ) {
+    function parse_nimagesfromfolder($matches) {
+    // $matches[0] = complete RT
+    // $matches[1] = ID of Folder
+    // $matches[2] = number of images (leave empty for 1 image)
+    // $matches[3] = leave empty = no lightbox , else Lightbox cmsimage.php Parameters (WxHxCROPxQUALITY e.g. 800x800x0x100)
+    // $matches[4] = WxHxCROPxQUALITY ALT-Text
+       $nImages = 1;
+        if (isset ($matches[2]) && $matches[2] !== "") {
+          $nImages = $matches[2];
+       }
+       if(isset($matches[1])) {
+          // Folder ID
+          $folder_id    = intval($matches[1]);
+          // check for Alt-Text
+          $alt      = explode(' ', $matches[4], 2);       // WxHxCROPxQUALITY ALT-Text
+          // $alt[0] = WxHxCROPxQUALITY
+          // $alt[1] = ALT-Text
+          $value    = explode('x', trim(strtolower($alt[0])));
+          $alttext  = isset($alt[1])    ? trim($alt[1]) : '';
+          $alt      = isset($alt[0]) ? html_specialchars(trim($alt[0])) : ''; // WxHxCROPxQUALITY
+          $width    = isset($value[ 0 ])  ? intval($value[ 0 ]) : 0;
+          $height   = isset($value[ 1 ])  ? intval($value[ 1 ]) : 0;
+          $crop     = isset($value[ 2 ]) && intval($value[ 2 ]) === 1 ? 1 : 0;
+          $quality  = isset($value[ 3 ])  ? intval($value[ 3 ]) : 0;
+          $sql = 'SELECT * FROM '.DB_PREPEND.'phpwcms_file WHERE f_aktiv=1 AND f_public=1 AND f_trash=0 AND f_pid='.$folder_id.' AND f_ext IN ("jpg", "png", "gif")';
+            $result = mysql_query($sql);
+            $i=0;
+            while($folderfile = mysql_fetch_array($result)) {
+              $folderfiles[$i] = $folderfile;
+              $i++;
+            }
+          /* use max. as many images as there are in the folder */
+          if ($i < $nImages)
+             $nImages = $i;
+            $random = array_rand($folderfiles, $nImages);
+          if ($nImages == 1) /* special case 1 file: array_rand returns single value instead of array of indices */
+             $random = array( $random );
+          shuffle($random);
+            $folderfile_output  = '';
+          for ($idxImage = 0; $idxImage<$nImages; $idxImage++)
+          {
+             $folderfile = $folderfiles[$random[$idxImage]];
+             if(isset($folderfile['f_id']) ) {
+                // $thumb_info = @getimagesize(PHPWCMS_URL.PHPWCMS_FILES.$folderfile["f_hash"] . '.' . $folderfile["f_ext"]);
+                $thumb_info = @getimagesize(PHPWCMS_FILES.$folderfile["f_hash"] . '.' . $folderfile["f_ext"]);
+                (isset ($value[ 0 ])) ? $thumb_info[0] = $value[0] : $thumb_info[0] = $thumb_info[0];
+                (isset ($value[ 1 ])) ? $thumb_info[1] = $value[1] : $thumb_info[1] = $thumb_info[1];
+                $zoominfo    = get_cached_image(
+                  array(   "target_ext"   =>   $folderfile["f_ext"],
+                         "image_name"  =>   $folderfile["f_hash"] . '.' . $folderfile["f_ext"],
+                         "max_width"   =>   $thumb_info[0],
+                         "max_height"  =>   $thumb_info[1],
+                         "thumb_name"  =>   md5(   $folderfile["f_hash"].$thumb_info[0].
+                                           $thumb_info[1].$GLOBALS['phpwcms']["sharpen_level"].$crop),
+                         'crop_image'  =>   $crop
+                  )
+                );
+                $folderfile_path  = PHPWCMS_IMAGES.$zoominfo[0];
+             } else {
+               $folderfile_path  = '';
+             }
+             $image      = '<img src="'.PHPWCMS_URL.'img/cmsimage.php/'.$width.'x'.$height.'x'.$crop;
+             if($quality <= 100 && $quality >= 10) {
+             $image .= 'x'.$quality;
+             }
+             $image     .= '/'.$folderfile['f_id'].'.'.$folderfile["f_ext"].'" alt="'.$alttext.'" border="0" />';
+             /* TB lightbox */
+             if (isset ($matches[3]) && $matches[3] !== "")
+             {
+                $lightbox = '<a title="'.$folderfile['f_longinfo'].'" rel="lightbox" target="_blank" href="'
+                            . PHPWCMS_URL.'img/cmsimage.php/' . $matches[3];
+                $lightbox     .= '/'.$folderfile['f_id'].'.'.$folderfile["f_ext"].'">';
+                $image = $lightbox . $image . '</a>';
+             }
+             /* TB lightbox ende*/
+             // append current image to output
+             $folderfile_output  .= $image;
+          }
+           return $folderfile_output;
+       }
+       return '<img src="'.PHPWCMS_URL.'img/leer.gif" alt="" border="0" />';
+    }
+    $content["all"] = preg_replace_callback( '/\{RAND_N_IMG_FROM_FOLDER:(\d+):(\d+):(.*?):(.*?)\}/i', 'parse_nimagesfromfolder', $content["all"]);
+    } // end if
+    ?>
+</code>
+=== Lightbox ===
+If the lightbox is being used, this code has to be somewhere in the template or the random image CP to link the lightbox scripts and CSS
+<code>
+    <!-- CSS: template/lib/slimbox/slimbox.css -->
+    <!-- JS: template/lib/slimbox/slimbox.mootools-1.3.js -->
+</code>

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