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 $this; } protected function getSvgHeader() { return "'; } public function addRectangle($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(); } }