MDL-61657 block_myoverview: implement course images for the myoverview block

lib/geopattern-php/GeoPattern/SVG.php

@@ -0,0 +1,94 @@
+<?php namespace RedeyeVentures\GeoPattern;
+
+use RedeyeVentures\GeoPattern\SVGElements\Group;
+use RedeyeVentures\GeoPattern\SVGElements\Polyline;
+use RedeyeVentures\GeoPattern\SVGElements\Rectangle;
+use RedeyeVentures\GeoPattern\SVGElements\Circle;
+use RedeyeVentures\GeoPattern\SVGElements\Path;
+
+class SVG {
+
+    protected $width;
+    protected $height;
+    protected $svgString;
+
+    function __construct($options=array())
+    {
+        $this->width = 100;
+        $this->height = 100;
+        $this->svgString = '';
+    }
+
+    public function setWidth($width)
+    {
+        $this->width = floor($width);
+        return $this;
+    }
+
+    public function setHeight($height)
+    {
+        $this->height = floor($height);
+        return $this;
+    }
+
+    protected function getSvgHeader()
+    {
+        return "<?xml version=\"1.0\"?><svg xmlns=\"http://www.w3.org/2000/svg\" width=\"{$this->width}\" height=\"{$this->height}\">";
+    }
+
+    protected function getSvgFooter()
+    {
+        return '</svg>';
+    }
+
+    public function addRectangle($x, $y, $width, $height, $args=array())
+    {
+        $rectangle = new Rectangle($x, $y, $width, $height, $args);
+        $this->svgString .= $rectangle;
+        return $this;
+    }
+
+    public function addCircle($cx, $cy, $r, $args=array())
+    {
+        $circle = new Circle($cx, $cy, $r, $args);
+        $this->svgString .= $circle;
+        return $this;
+    }
+
+    public function addPath($d, $args=array())
+    {
+        $path = new Path($d, $args);
+        $this->svgString .= $path;
+        return $this;
+    }
+
+    public function addPolyline($points, $args=array())
+    {
+        $polyline = new Polyline($points, $args);
+        $this->svgString .= $polyline;
+        return $this;
+    }
+
+    public function addGroup($group, $args=array())
+    {
+        if ($group instanceof Group)
+        {
+            $group->setArgs($args);
+            $this->svgString .= $group;
+            return $this;
+        }
+        throw new \InvalidArgumentException("The group provided is not a valid instance of Group.");
+    }
+
+    public function getString()
+    {
+        return $this->getSvgHeader().$this->svgString.$this->getSvgFooter();
+    }
+
+    public function __toString()
+    {
+        return $this->getString();
+    }
+
+
+}