<?php
/* $Id$ */
namespace Mammut\Chart;

(defined('MAMMUT') && (basename(__FILE__) != basename($_SERVER['PHP_SELF']))) or die('ACCESS DENIED');

use Mammut\Chart\Renderer\iRenderer;
use Mammut\Image\Color;

/**
 * 
 * @author Stefan Daurer <s.daurer@q-spot.org>
 * @package Mammut\Chart
 */
class LineChart extends AbstractCoordinateChart implements iStackableChart {
	use Stackable;

	public function __construct() {
		$this->background = new Color(255, 255, 255);
	}
	
	public function render(iRenderer $renderer) {
		$renderer->start($this->width, $this->height, $this->background, iRenderer::HINT_LINE);
		$this->drawGrid($renderer, 10, 10, $this->width-15, $this->height-15);
	}
	
// 	public function createImage($type = 'png') {
// 		$image = imagecreatetruecolor($this->width, $this->height);
// 		$bgColor = imagecolorexact($image, $this->background[0], $this->background[1], $this->background[2]);
		
// 		$maxValueText = (string) $this->maxValue;
// 		$numberSize = strlen($maxValueText) * imagefontwidth(1) + 5;
		
// 		imagefilledrectangle($image, 0, 0, imagesx($image), imagesy($image), $bgColor);
		
// 		$lineColor = imagecolorexact($image, 0, 0, 0);
		
// 		$realWidth = $this->width - $numberSize;
// 		$barWidth = $realWidth / count($this->datalines[0]);
		
// 		foreach($this->datalines as $key=>$line) {
// 			$x = $numberSize;
// 			$realHeight = $this->height - 20;
// 			$lastX = $numberSize;
// 			$lastY = null;
// 			$barColor = imagecolorexact($image, $this->lineColor[$key][0], $this->lineColor[$key][1], $this->lineColor[$key][2]);
// 			foreach($line as $value) {
// 				if(!is_null($value)) {
// 					$realValue = round(($value / $this->maxValue) * $realHeight);
// 					if(!is_null($lastY))
// 						imageline($image, $lastX, $lastY, $x, imagesy($image) - 20 - $realValue, $barColor);
// 					$lastX = $x;
// 					$lastY = imagesy($image) - 20 - $realValue;
// 				}
// 				else {
// 					$lastX = $x;
// 					$lastY = null;
// 				}
// 				$x += $barWidth;
// 			}
// 		}

// /*			imageline ($image, 16, 2, 20, 2, $lineColor);
// 			imageline ($image, 16, imagesy($image)-20 - ($realHeight/2), 20, imagesy($image)-20 - ($realHeight/2), $lineColor);
// 			imageline ($image, 20, 2, 20, imagesy($image)-20, $lineColor);
// 			imageline ($image, imagesx($image), imagesy($image)-20, 16, imagesy($image)-20, $lineColor);
			
// 			imagestring($image, 1, 1,0, $this->maxValue, $lineColor);
// 			imagestring($image, 1, 1, imagesy($image)-23 - ($realHeight/2), round($this->maxValue/2), $lineColor);
// 			imagestring($image, 1, 1, imagesy($image)-23, "0" , $lineColor);
// */
		
// 		$this->drawGrid($image, 0, 0, imagesx($image), imagesy($image), $numberSize, 20);
		
// 		ob_start();
// 		imagepng($image);
// 		return ob_get_clean();
// 	}
}