<?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;

/**
 * Simple bar chart
 * @author Stefan Daurer <s.daurer@q-spot.org>
 * @package Mammut\Chart
 */
class BarChart extends AbstractChart 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);
		
		$all = 0;
		foreach ($this->chartData as $element)
			$all += $element->payload;
		
		$start = 0;	
		$div = ($this->height-5); 
		$count = count($this->chartData);
		if ($this->isStacking()) {
			
		}
		else {
			$width = ($this->width/$count);
			$x = 1;
			
			foreach ($this->chartData as $element) {
				$delta = ($element->payload/$all)*$div;
				$renderer->drawRect($x+1, ($this->height-2)-$delta, $x+$width-1, ($this->height-2), $element->color, true);
				$x += $width;
			}
		}
	}
	
// 	public function createImage($type = 'png') {
// 		$image = imagecreatetruecolor($this->width, $this->height);
// 		$bgColor = imagecolorexact($image, $this->background[0], $this->background[1], $this->background[2]);
		
// 		imagefilledrectangle($image, 0, 0, imagesx($image), imagesy($image), $bgColor);
		
// 		$maxValueText = (string) $this->maxValue;
// 		$numberSize = strlen($maxValueText) * imagefontwidth(1) + 5;
		
// 		$lineColor = imagecolorexact($image, 0, 0, 0);
// 		$barColor = imagecolorexact($image, 200, 0, 0);
		
// 		$realWidth = $this->width - 20;
// 		$barWidth = $realWidth / count($this->datalines[0]);
		
// 		$x = 20;
// 		$realHeight = $this->height - 20;
// 		$size = ($barWidth - 2) / count($this->datalines);
// 		foreach($this->datalines as $key=>$line) {
// 			$x = 20;
// 			$realHeight = $this->height - 20;
// 			$lastX = 20;
// 			$lastY = $realHeight;
// 			$barColor = imagecolorexact($image, $this->lineColor[$key][0], $this->lineColor[$key][1], $this->lineColor[$key][2]);
// 			foreach($line as $value) {
// 				$realValue = round(($value / $this->maxValue) * $realHeight);
// 				imagefilledrectangle($image, $x + 2 + ($size * $key), imagesy($image) - 20, $x + 2 + ($size * $key) + $size - 1, imagesy($image) - 20 - $realValue, $barColor);
// 				$x += $barWidth;
// 			}
// 		}

// //			imageline ($image, 20, 0, 20, imagesy($image)-20, $lineColor);
// //			imageline ($image, imagesx($image), imagesy($image)-20, 20, imagesy($image)-20, $lineColor);
		

// 		$this->drawGrid($image, 0, 0, imagesx($image), imagesy($image), $numberSize, 20);
		
// 		ob_start();
// 		imagepng($image);
// 		return ob_get_clean();
// 	}
}