<?php
/* $Id$ */
namespace Mammut\Chart\Renderer;

(defined('MAMMUT') && (basename(__FILE__) != basename($_SERVER['PHP_SELF']))) or die('ACCESS DENIED');

use Mammut\Image\Color;

/**
 * Graph renderer interface
 *
 * @author Stefan Daurer <s.daurer@q-spot.org>
 * @package Mammut\Chart
 */
interface iRenderer {
	
	const HINT_PIE = 'piechart';
	const HINT_AREA = 'areachart';
	const HINT_LINE = 'linechart';

	public function start($w, $h, Color $bg, $hint);

	public function drawLine($x1, $y1, $x2, $y2, Color $color);

	public function drawRect($x1, $y1, $x2, $y2, Color $color, $fill = FALSE);

	public function drawText($x, $y, $text, Color $color, $font = NULL, $size = -1, $angle = 0);

	public function drawEllipse($cx, $cy, $width, $height, Color $color, $fill = FALSE);

	public function drawArc($cx, $cy, $width, $height, $start, $end, Color $color, $fill = FALSE);

	/**
	 * Render the graph
	 * 
	 * @param mixed $file
	 * NULL = direct output, string = filename, Mammut iOutput to write on stream         	
	 */
	public function output($file = NULL);
}