1 files changed, 80 insertions, 0 deletions
diff --git a/library/Icinga/Chart/Render/Rotator.php b/library/Icinga/Chart/Render/Rotator.php
new file mode 100644
index 0000000..3e7071c
--- /dev/null
+++ b/library/Icinga/Chart/Render/Rotator.php
@@ -0,0 +1,80 @@
+<?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);
+    }
+}