Add php files

include/ECM/open_flash_chart2/php-ofc-library/ofc_bar_stack.php

@@ -0,0 +1,55 @@
+<?php
+
+include_once 'ofc_bar_base.php';
+
+class bar_stack extends bar_base
+{
+	function bar_stack()
+	{
+		$this->type      = "bar_stack";
+		parent::bar_base();
+	}
+	
+	function append_stack( $v )
+	{
+		$this->append_value( $v );
+	}
+	
+	// an array of HEX colours strings
+	// e.g. array( '#ff0000', '#00ff00' );
+	function set_colours( $colours )
+	{
+		$this->colours = $colours;
+	}
+	
+	// an array of bar_stack_value
+	function set_keys( $keys )
+	{
+		$this->keys = $keys;
+	}
+}
+
+class bar_stack_value
+{
+	function bar_stack_value( $val, $colour )
+	{
+		$this->val = $val;
+		$this->colour = $colour;
+	}
+	
+	function set_tooltip( $tip )
+	{
+		$this->tip = $tip;
+	} 
+}
+
+class bar_stack_key
+{
+	function bar_stack_key( $colour, $text, $font_size )
+	{
+		$this->colour = $colour;
+		$this->text = $text;
+		$tmp = 'font-size';
+		$this->$tmp = $font_size;
+	}
+}