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<?php
/**
* Package for building SVG graphics.
*
* Copyright 2002-2007 The Horde Project (http://www.horde.org/)
*
* @author Chuck Hagenbuch <chuck@horde.org>
* @package XML_SVG
* @license http://www.fsf.org/copyleft/lgpl.html
*/
/**
* XML_SVG_Element
*
* This is the base class for the different SVG Element
* Objects. Extend this class to create a new SVG Element.
*
* @package XML_SVG
*/
class XML_SVG_Element
{
var $_elements = null;
var $_style = null;
var $_transform = null;
var $_id = null;
function XML_SVG_Element($params = array())
{
foreach ($params as $p => $v) {
$param = '_' . $p;
$this->$param = $v;
}
}
/**
* Most SVG elements can contain child elements. This method calls
* the printElement method of any child element added to this
* object by use of the addChild method.
*/
function printElement()
{
// Loop and call.
if (is_array($this->_elements)) {
foreach ($this->_elements as $child) {
$child->printElement();
}
}
}
/**
* This method adds an object reference (or value, if $copy is
* true) to the _elements array.
*/
function addChild(&$element, $copy = false)
{
if ($copy) {
$this->_elements[] = &$element->copy();
} else {
$this->_elements[] = &$element;
}
}
/**
* This method sends a message to the passed element requesting to
* be added as a child.
*/
function addParent(&$parent)
{
if (is_subclass_of($parent, 'XML_SVG_Element')) {
$parent->addChild($this);
}
}
function copy()
{
if (version_compare(zend_version(), '2', '>')) {
return clone($this);
} else {
$xml_svg = $this;
return $xml_svg;
}
}
/**
* Print each of the passed parameters, if they are set.
*/
function printParams()
{
foreach (func_get_args() as $param) {
$_param = '_' . $param;
if (isset($this->$_param)) {
switch ($param) {
case 'filter':
echo ' filter="url(#' . $this->$_param . ')"';
break;
default:
echo ' ' . str_replace('_', '-', $param) . '="' . $this->$_param . '"';
break;
}
}
}
}
// Set any named attribute of an element to a value.
function setParam($param, $value)
{
$attr = '_' . $param;
$this->$attr = $value;
}
// Get any named attribute of an element.
function getParam($param)
{
$attr = '_' . $param;
if (isset($this->$attr)) {
return $this->$attr;
} else {
return null;
}
}
// Print out the object for debugging.
function debug()
{
echo '<pre>'; var_dump($this); echo '</pre>';
}
}
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