Initial commit of the floating block module

README.txt

+$Id$ 
+
+-- SUMMARY --
+
+The Floating block module allows you to keep html blocks, selected using 
+jquery selectors in a fixed position on the page similar to the way that 
+tableheader.js works in core Drupal.
+
+For a full description of the module, visit the project page
+  http://drupal.org/project/floating_block
+
+To submit bug reports and feature suggestions, or to track changes
+  http://drupal.org/project/issues/floating_block
+
+
+-- REQUIREMENTS --
+
+None.
+
+
+-- INSTALLATION --
+
+ Install as usual, see http://drupal.org/node/70151 for further information.
+
+ 
+-- CONFIGURATION --
+
+ Configure which htmls blocks to apply the effect to in 
+  Administer > Settings > Floating Block
+
+  
+
+ Customize the menu settings in Administer  Site configuration 
+  Administration menu.
+
+ To prevent administrative menu items from appearing twice, you may hide the
+  Navigation menu block, or move the Administer menu items into a separate
+  menu.
+
+
+-- CUSTOMIZATION --
+
+
+-- TROUBLESHOOTING --
+
+
+-- FAQ --
+
+
+-- CONTACT --
+
+Current maintainers
+ Alex Pott (alexpott) - http://drupal.org/user/157725

floating_block.info

+; $Id:
+name = Floating Block
+description = Allows regions of the site to float
+;package = Development
+core = 6.x

floating_block.js

+// $Id$
+
+/**
+ * Provides the ability to fix a html block to a position on the page when the 
+ * browser is scroled.
+ *
+ * This code is based on tableheader.js
+ */
+
+Drupal.blockFloatDoScroll = function() {
+  if (typeof(Drupal.blockFloatOnScroll)=='function') {
+    Drupal.blockFloatOnScroll();
+  }
+};
+
+/**
+ * Attaches the floating_block behavior.
+ */
+Drupal.behaviors.blockFloat = function (context) {
+  // This breaks in anything less than IE 7. Prevent it from running.
+  if (jQuery.browser.msie && parseInt(jQuery.browser.version, 10) < 7) {
+    return;
+  }
+  
+  // Keep track of all cloned blocks.
+  var blocks = [];
+  $(Drupal.settings.floating_block).each(function (i, selector) {
+    $(selector.toString() +':not(.blockFloat-processed)', context).each(function (j, block) {
+      // Clone thead so it inherits original jQuery properties.
+      var blockClone = $(block).clone(true).insertBefore(block).addClass('sticky-block').css({
+        position: 'fixed',
+        top: '0px',
+        width: $(this).width(),
+        height: $(this).height(),
+        visibility: 'hidden'
+      });
+
+      if ($(block).attr('id').length > 0) {
+        $(blockClone).attr('id',$(block).attr('id') + '-clone');
+      }
+      blockClone = $(blockClone)[0];
+      blockClone.original_position = $(block).offset();
+      blocks.push(blockClone);
+
+      // Finish initialzing header positioning.
+      tracker(blockClone);
+
+      //Maybe need to attach soemthing to parent div?
+      //$(table).addClass('sticky-table');
+      $(block).addClass('blockFloat-processed');
+    });
+  });
+
+  // Define the anchor holding var.
+  var prevAnchor = '';
+
+  // Track positioning and visibility.
+  function tracker(e) {
+    // Save positioning data.
+    var viewHeight = document.documentElement.scrollHeight || document.body.scrollHeight;
+    if (e.viewHeight != viewHeight) {
+      e.viewHeight = viewHeight;
+      e.docHeight = $(document).height();
+      e.vPosition = e.original_position.top;
+      e.hPosition = e.original_position.left;
+      e.vLength = e.clientHeight;
+    }
+    var current_position = $(e).offset();
+    // Track horizontal positioning relative to the viewport and set visibility.
+    var hScroll = document.documentElement.scrollLeft || document.body.scrollLeft;
+    var vOffset = (document.documentElement.scrollTop || document.body.scrollTop) - e.vPosition;
+
+    var topPosition = 0;
+    if (vOffset > 0) {
+      visState = 'visible';
+      $('#sidebar-left-inner').css({visibility: 'hidden'});
+      //Don't let the bottom of the block go beneath the document height
+      if ((current_position.top + e.vLength) > e.docHeight) {
+         topPosition = e.docHeight - current_position.top - e.vLength;
+      }
+    }
+    else {
+      visState = 'hidden';
+      $('#sidebar-left-inner').css({visibility: 'visible'});
+    }
+
+    $(e).css({left: -hScroll + e.hPosition +'px', visibility: visState, top: topPosition +'px'});
+
+  }
+
+  // Only attach to scrollbars once, even if Drupal.attachBehaviors is called
+  //  multiple times.
+  if (!$('body').hasClass('blockFloat-processed')) {
+    $('body').addClass('blockFloat-processed');
+    $(window).scroll(Drupal.blockFloatDoScroll);
+    $(document.documentElement).scroll(Drupal.blockFloatDoScroll);
+  }
+
+  // Track scrolling.
+  Drupal.blockFloatOnScroll = function() {
+    $(blocks).each(function () {
+      tracker(this);
+    });
+  };
+
+  // Track resizing.
+  var time = null;
+  var resize = function () {
+    // Ensure minimum time between adjustments.
+    if (time) {
+      return;
+    }
+    time = setTimeout(function () {
+      $('.sticky-block').each(function () {
+        this.viewHeight = 0;
+        tracker(this);
+      });
+      // Reset timer
+      time = null;
+    }, 250);
+  };
+  $(window).resize(resize);
+};

floating_block.module

+<?php
+// $Id$
+
+/**
+ * @file
+ * Allows regions of the site to float.
+ */
+
+/**
+ * Implementation of hook_init().
+ */
+function floating_block_init() {
+  $selectors = preg_split("/(\r\n|\n)/", variable_get('floating_block_to_apply', ''));
+  if (count($selectors)) {
+    drupal_add_js(array('floating_block' => $selectors, ), 'setting');
+    $path = drupal_get_path('module', 'floating_block');
+    drupal_add_js($path . '/floating_block.js');
+  }
+}
+
+/**
+ * Implementation of hook_menu().
+ */
+function floating_block_menu() {
+  $items = array();
+  $items['admin/settings/floating_block'] = array(
+    'title' => 'Floating block',
+    'description' => 'Configure floating block.',
+    'access arguments' => array('administer site configuration'),
+    'page callback' => 'drupal_get_form',
+    'page arguments' => array('floating_block_admin')
+  );
+  return $items;
+}
+
+/**
+ * Form to config floating block settings.
+ */
+function floating_block_admin() {
+  $form = array();
+  $form['floating_block_to_apply'] = array(
+    '#type' => 'textarea',
+    '#title' => t('CSS Classes/Selectors to <em>Include</em>'),
+    '#default_value' => variable_get('floating_block_to_apply', ''),
+    '#description' => t('CSS selectors including id or class where to apply the floating block to. For example use <code>#sidebar-left</code> for ID, <code>.sidebar-left</code> for classes, and/or <code>#floating-block .floating_block</code> for combination. One selector per line.'),
+  );
+  return system_settings_form($form);
+}
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