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<?php
/* Icinga Web 2 | (c) 2014 Icinga Development Team | GPLv2+ */
namespace Icinga\Chart\Render;
use Icinga\Chart\Render\RenderContext;
use Icinga\Chart\Primitive\Drawable;
use DOMElement;
/**
* Class Rotator
* @package Icinga\Chart\Render
*/
class Rotator implements Drawable
{
/**
* The drawable element to rotate
*
* @var Drawable
*/
private $element;
/**
* @var int
*/
private $degrees;
/**
* Wrap an element into a new instance of Rotator
*
* @param Drawable $element The element to rotate
* @param int $degrees The amount of degrees
*/
public function __construct(Drawable $element, $degrees)
{
$this->element = $element;
$this->degrees = $degrees;
}
/**
* Rotate the given element.
*
* @param RenderContext $ctx The rendering context
* @param DOMElement $el The element to rotate
* @param $degrees The amount of degrees
*
* @return DOMElement The rotated DOMElement
*/
private function rotate(RenderContext $ctx, DOMElement $el, $degrees)
{
// Create a box containing the rotated element relative to the original element position
$container = $ctx->getDocument()->createElement('g');
$x = $el->getAttribute('x');
$y = $el->getAttribute('y');
$container->setAttribute('transform', 'translate(' . $x . ',' . $y . ')');
$el->removeAttribute('x');
$el->removeAttribute('y');
// Put the element into a rotated group
//$rotate = $ctx->getDocument()->createElement('g');
$el->setAttribute('transform', 'rotate(' . $degrees . ')');
//$rotate->appendChild($el);
$container->appendChild($el);
return $container;
}
/**
* Create the SVG representation from this Drawable
*
* @param RenderContext $ctx The context to use for rendering
*
* @return DOMElement The SVG Element
*/
public function toSvg(RenderContext $ctx)
{
$el = $this->element->toSvg($ctx);
return $this->rotate($ctx, $el, $this->degrees);
}
}
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