From be2491b093b1f0ca430bede679ecbb670041e483 Mon Sep 17 00:00:00 2001
From: cassio <cassiopc@gmail.com>
Date: Tue, 2 Jul 2013 09:46:45 +0400
Subject: restructuring of boca's git

---
 src/libchart/classes/LineChart.php | 171 +++++++++++++++++++++++++++++++++++++
 1 file changed, 171 insertions(+)
 create mode 100644 src/libchart/classes/LineChart.php

(limited to 'src/libchart/classes/LineChart.php')

diff --git a/src/libchart/classes/LineChart.php b/src/libchart/classes/LineChart.php
new file mode 100644
index 0000000..9d44eba
--- /dev/null
+++ b/src/libchart/classes/LineChart.php
@@ -0,0 +1,171 @@
+<?php
+	/** Libchart - PHP chart library
+	*	
+	* Copyright (C) 2005-2006 Jean-Marc Trémeaux (jm.tremeaux at gmail.com)
+	* 	
+	* This library is free software; you can redistribute it and/or
+	* modify it under the terms of the GNU Lesser General Public
+	* License as published by the Free Software Foundation; either
+	* version 2.1 of the License, or (at your option) any later version.
+	* 
+	* This library is distributed in the hope that it will be useful,
+	* but WITHOUT ANY WARRANTY; without even the implied warranty of
+	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+	* Lesser General Public License for more details.
+	* 
+	* You should have received a copy of the GNU Lesser General Public
+	* License along with this library; if not, write to the Free Software
+	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+	* 
+	*/
+	
+	/**
+	* Line chart
+	*
+	* @author   Jean-Marc Trémeaux (jm.tremeaux at gmail.com)
+	*/
+
+	class LineChart extends BarChart
+	{
+		/**
+		* Creates a new line chart
+		*
+		* @access	public
+    		* @param	integer		width of the image
+    		* @param	integer		height of the image
+		*/
+		
+		function LineChart($width = 600, $height = 250)
+		{
+			parent::BarChart($width, $height);
+
+			$this->setLabelMarginLeft(50);
+			$this->setLabelMarginRight(50);
+			$this->setLabelMarginTop(40);
+			$this->setLabelMarginBottom(50);
+		}
+
+		/**
+		* Print the axis
+		*
+		* @access	private
+		*/
+		
+		function printAxis()
+		{
+			// Check if some points were defined
+			
+			if($this->sampleCount < 2)
+				return;
+			
+			$minValue = $this->axis->getLowerBoundary();
+			$maxValue = $this->axis->getUpperBoundary();
+			$stepValue = $this->axis->getTics();
+
+			// Line axis
+
+			for($value = $minValue; $value <= $maxValue; $value += $stepValue)
+			{
+				$y = $this->graphBRY - ($value - $minValue) * ($this->graphBRY - $this->graphTLY) / ($this->axis->displayDelta);
+
+				imagerectangle($this->img, $this->graphTLX - 3, $y, $this->graphTLX - 2, $y + 1, $this->axisColor1->getColor($this->img));
+				imagerectangle($this->img, $this->graphTLX - 1, $y, $this->graphTLX, $y + 1, $this->axisColor2->getColor($this->img));
+
+				$this->text->printText($this->img, $this->graphTLX - 5, $y, $this->textColor, $value, $this->text->fontCondensed, $this->text->HORIZONTAL_RIGHT_ALIGN | $this->text->VERTICAL_CENTER_ALIGN);
+			}
+
+			// Horizontal Axis
+
+			$columnWidth = ($this->graphBRX - $this->graphTLX) / ($this->sampleCount - 1);
+
+			reset($this->point);
+
+			for($i = 0; $i < $this->sampleCount; $i++)
+			{
+				$x = $this->graphTLX + $i * $columnWidth;
+
+				imagerectangle($this->img, $x - 1, $this->graphBRY + 2, $x, $this->graphBRY + 3, $this->axisColor1->getColor($this->img));
+				imagerectangle($this->img, $x - 1, $this->graphBRY, $x, $this->graphBRY + 1, $this->axisColor2->getColor($this->img));
+
+				$point = current($this->point);
+				next($this->point);
+
+				$text = $point->getX();
+
+				$this->text->printDiagonal($this->img, $x - 5, $this->graphBRY + 10, $this->textColor, $text);
+			}
+		}
+
+		/**
+		* Print the lines
+		*
+		* @access	private
+		*/
+
+		function printLine()
+		{
+			// Check if some points were defined
+			
+			if($this->sampleCount < 2)
+				return;
+			
+			reset($this->point);
+
+			$minValue = $this->axis->getLowerBoundary();
+			$maxValue = $this->axis->getUpperBoundary();
+			
+			$columnWidth = ($this->graphBRX - $this->graphTLX) / ($this->sampleCount - 1);
+
+			$x1 = null;
+			$y1 = null;
+
+			for($i = 0; $i < $this->sampleCount; $i++)
+			{
+				$x2 = $this->graphTLX + $i * $columnWidth;
+
+				$point = current($this->point);
+				next($this->point);
+
+				$value = $point->getY();
+				
+				$y2 = $this->graphBRY - ($value - $minValue) * ($this->graphBRY - $this->graphTLY) / ($this->axis->displayDelta);
+
+//				$this->text->printText($this->img, $x2, $y2 - 5, $this->textColor, $value, $this->text->fontCondensed, $this->text->HORIZONTAL_CENTER_ALIGN | $this->text->VERTICAL_BOTTOM_ALIGN);
+
+				// Draw line 
+
+				if($x1)
+				{
+					$this->primitive->line($x1, $y1, $x2, $y2, $this->barColor4, 4);
+					$this->primitive->line($x1, $y1 - 1, $x2, $y2 - 1, $this->barColor3, 2);
+				}
+				
+				$x1 = $x2;
+				$y1 = $y2;
+			}
+		}
+		
+		/**
+		* Render the chart image
+		*
+		* @access	public
+		* @param	string		name of the file to render the image to (optional)
+		*/
+		
+		function render($fileName = null)
+		{
+			$this->computeBound();
+			$this->computeLabelMargin();
+			$this->createImage();
+			$this->printLogo();
+			$this->printTitle();
+			$this->printAxis();
+			$this->printLine();
+
+			if(isset($fileName))
+				imagepng($this->img, $fileName);
+			else
+				imagepng($this->img);
+		}
+	}
+?>
-- 
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