Index: branches/5.3.x/core/units/admin/admin_events_handler.php
===================================================================
diff -u -N -r15483 -r15574
--- branches/5.3.x/core/units/admin/admin_events_handler.php	(.../admin_events_handler.php)	(revision 15483)
+++ branches/5.3.x/core/units/admin/admin_events_handler.php	(.../admin_events_handler.php)	(revision 15574)
@@ -1,6 +1,6 @@
 <?php
 /**
-* @version	$Id: admin_events_handler.php 15261 2012-04-03 10:57:08Z alex $
+* @version	$Id: admin_events_handler.php 15574 2012-10-15 10:05:48Z alex $
 * @package	In-Portal
 * @copyright	Copyright (C) 1997 - 2009 Intechnic. All rights reserved.
 * @license      GNU/GPL
@@ -1131,9 +1131,164 @@
 			$this->Conn->Query('OPTIMIZE TABLE ' . $table_name);
 		}
 	}
+
+	/**
+	 * [SCHEDULED TASK] Pre-resizes images, used in templates
+	 *
+	 * @param kEvent $event
+	 * @return void
+	 * @access protected
+	 */
+	protected function OnPreResizeImages(kEvent $event)
+	{
+		$scheduled_task = $event->MasterEvent->getObject();
+		/* @var $scheduled_task kDBItem */
+
+		$mass_resizer = new MassImageResizer();
+
+		// rules from scheduled task itself
+		$mass_resizer->addRules($scheduled_task->GetDBField('Settings'));
+
+		// rules from all enabled themes
+		$sql = 'SELECT ImageResizeRules
+				FROM ' . $this->Application->getUnitOption('theme', 'TableName') . '
+				WHERE Enabled = 1';
+		$mass_resizer->addRules($this->Conn->GetCol($sql));
+
+		$mass_resizer->run();
+	}
 }
 
+/**
+ * Resizes multiple images according to given rules
+ */
+class MassImageResizer extends kBase {
 
+	/**
+	 * Rules, that tell how images must be resized
+	 *
+	 * @var Array
+	 * @access private
+	 */
+	private $_rules = Array ();
+
+	/**
+	 * Remembers, which fields of which unit are used
+	 *
+	 * @var Array
+	 * @access private
+	 */
+	private $_unitFields = Array ();
+
+	/**
+	 * Remembers which fields of which units require which format
+	 *
+	 * @var Array
+	 * @access private
+	 */
+	private $_unitFieldFormats = Array ();
+
+	/**
+	 * Adds more resize rules
+	 *
+	 * @param string|Array $rules
+	 * @return void
+	 * @access public
+	 */
+	public function addRules($rules)
+	{
+		$rules = (array)$rules;
+
+		foreach ($rules as $rule) {
+			$rule = $this->_cleanup($rule);
+
+			if ( $rule ) {
+				$this->_rules = array_merge($this->_rules, $rule);
+			}
+		}
+	}
+
+	/**
+	 * Normalizes given set of rules
+	 *
+	 * @param string $rules
+	 * @return Array
+	 * @access private
+	 */
+	private function _cleanup($rules)
+	{
+		$ret = explode("\n", str_replace(Array ("\r\n", "\r"), "\n", $rules));
+
+		return array_filter(array_map('trim', $ret));
+	}
+
+	/**
+	 * Transforms rules given in raw format into 3D array of easily manageable rules
+	 *
+	 * @return void
+	 * @access private
+	 */
+	private function _preProcessRules()
+	{
+		foreach ($this->_rules as $raw_rule) {
+			list ($prefix, $field, $format) = explode(':', $raw_rule, 3);
+
+			if ( !isset($this->_unitFields[$prefix]) ) {
+				$this->_unitFields[$prefix] = Array ();
+				$this->_unitFieldFormats[$prefix] = Array ();
+			}
+
+			$this->_unitFields[$prefix][] = $field;
+
+			if ( !isset($this->_unitFieldFormats[$prefix][$field]) ) {
+				$this->_unitFieldFormats[$prefix][$field] = Array ();
+			}
+
+			$this->_unitFieldFormats[$prefix][$field][] = $format;
+		}
+	}
+
+	/**
+	 * Performs resize operation
+	 *
+	 * @return void
+	 * @access public
+	 */
+	public function run()
+	{
+		$this->_preProcessRules();
+
+		foreach ($this->_unitFields as $prefix => $fields) {
+			$sql = 'SELECT ' . implode(',', array_unique($fields)) . '
+					FROM ' . $this->Application->getUnitOption($prefix, 'TableName');
+			$unit_data = $this->Conn->GetIterator($sql);
+
+			if ( !count($unit_data) ) {
+				continue;
+			}
+
+			$object = $this->Application->recallObject($prefix . '.resize', null, Array ('skip_autoload' => true));
+			/* @var $object kDBItem */
+
+			foreach ($unit_data as $field_values) {
+				foreach ($field_values as $field => $value) {
+					if ( !$value ) {
+						continue;
+					}
+
+					$object->SetDBField($field, $value);
+
+					foreach ($this->_unitFieldFormats[$prefix][$field] as $format) {
+						// will trigger image resize if needed
+						$object->GetField($field, $format);
+					}
+				}
+			}
+		}
+	}
+}
+
+
 class UnitConfigDecorator {
 
 	var $parentPath = Array ();