added the webui to the tarball

webui/system/helper/libchart/classes/libchart.php

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+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+
+	require_once 'model/Point.php';
+	require_once 'model/DataSet.php';
+	require_once 'model/XYDataSet.php';
+	require_once 'model/XYSeriesDataSet.php';
+	
+	require_once 'view/primitive/Padding.php';
+	require_once 'view/primitive/Rectangle.php';
+	require_once 'view/primitive/Primitive.php';
+	require_once 'view/text/Text.php';
+	require_once 'view/color/Color.php';
+	require_once 'view/color/ColorSet.php';
+	require_once 'view/color/Palette.php';
+	require_once 'view/axis/Bound.php';
+	require_once 'view/axis/Axis.php';
+	require_once 'view/plot/Plot.php';
+	require_once 'view/caption/Caption.php';
+	require_once 'view/chart/Chart.php';
+	require_once 'view/chart/BarChart.php';
+	require_once 'view/chart/VerticalBarChart.php';
+	require_once 'view/chart/HorizontalBarChart.php';
+	require_once 'view/chart/LineChart.php';
+	require_once 'view/chart/PieChart.php';
+?>

webui/system/helper/libchart/classes/model/DataSet.php

@@ -0,0 +1,28 @@
+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+	
+	/**
+	 * Superclass of all data sets.
+	 *
+	 * @author Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * Created on 10 may 2007
+	 */
+	abstract class DataSet {
+	}
+?>

webui/system/helper/libchart/classes/model/Point.php

@@ -0,0 +1,59 @@
+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+	
+	/**
+	 * Point of coordinates (X,Y).
+	 * The value of X isn't really of interest, but X is used as a label to display on the horizontal axis.
+	 *
+	 * @author Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 */
+	class Point {
+		private $x;
+		private $y;
+	
+		/**
+		 * Creates a new sampling point of coordinates (x, y)
+		 *
+		 * @param integer x coordinate (label)
+		 * @param integer y coordinate (value)
+		 */
+		public function Point($x, $y) {
+			$this->x = $x;
+			$this->y = $y;
+		}
+
+		/**
+		 * Gets the x coordinate (label).
+		 *
+		 * @return integer x coordinate (label)
+		 */
+		public function getX() {
+			return $this->x;
+		}
+
+		/**
+		 * Gets the y coordinate (value).
+		 *
+		 * @return integer y coordinate (value)
+		 */
+		public function getY() {
+			return $this->y;
+		}
+	}
+?>

webui/system/helper/libchart/classes/model/XYDataSet.php

@@ -0,0 +1,56 @@
+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+	
+	/**
+	 * Set of data in the form of (x, y) items.
+	 *
+	 * @author Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * Created on 10 may 2007
+	 */
+	class XYDataSet extends DataSet {
+		private $pointList;
+	
+		/**
+		 * Constructor of XYDataSet.
+		 *
+		 */
+		public function XYDataSet() {
+			$this->pointList = array();
+		}
+	
+		/**
+		 * Add a new point to the dataset.
+		 *
+		 * @param Point Point to add to the dataset
+		 */
+		
+		public function addPoint($point) {
+			array_push($this->pointList, $point);
+		}
+
+		/**
+		 * Getter of pointList.
+		 *
+		 * @return List of points.
+		 */
+		public function getPointList() {
+			return $this->pointList;
+		}
+	}
+?>

webui/system/helper/libchart/classes/model/XYSeriesDataSet.php

@@ -0,0 +1,76 @@
+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+	
+	/**
+	 * This dataset comprises several series of points and is used to plot multiple lines charts.
+	 * Each serie is a XYDataSet.
+	 *
+	 * @author Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * Created on 20 july 2007
+	 */
+	class XYSeriesDataSet extends DataSet {
+		/**
+		 * List of titles
+		 */
+		private $titleList;
+	
+		/**
+		 * List of XYDataSet.
+		 */
+		private $serieList;
+		
+		/**
+		 * Constructor of XYSeriesDataSet.
+		 *
+		 */
+		public function XYSeriesDataSet() {
+			$this->titleList = array();
+			$this->serieList = array();
+		}
+	
+		/**
+		 * Add a new serie to the dataset.
+		 *
+		 * @param string Title (label) of the serie.
+		 * @param XYDataSet Serie of points to add
+		 */
+		public function addSerie($title, $serie) {
+			array_push($this->titleList, $title);
+			array_push($this->serieList, $serie);
+		}
+		
+		/**
+		 * Getter of titleList.
+		 *
+		 * @return List of titles.
+		 */
+		public function getTitleList() {
+			return $this->titleList;
+		}
+
+		/**
+		 * Getter of serieList.
+		 *
+		 * @return List of series.
+		 */
+		public function getSerieList() {
+			return $this->serieList;
+		}
+	}
+?>

webui/system/helper/libchart/classes/view/axis/Axis.php

@@ -0,0 +1,130 @@
+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+	
+	/**
+	 * Automatic axis boundaries and ticks calibration
+	 *
+	 * @author Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 */
+	class Axis {
+		private $min;
+		private $max;
+		private $guide;
+		private $delta;
+		private $magnitude;
+		private $displayMin;
+		private $displayMax;
+		private $tics;
+	
+		/**
+		 * Creates a new axis formatter.
+		 *
+		 * @param integer minimum value on the axis
+		 * @param integer maximum value on the axis
+		 */
+		public function Axis($min, $max) {
+			$this->min = $min;
+			$this->max = $max;
+
+			$this->guide = 10;
+		}
+
+		/**
+		 * Computes value between two ticks.
+		 */
+		public function quantizeTics() {
+			// Approximate number of decades, in [1..10[
+			$norm = $this->delta / $this->magnitude;
+
+			// Approximate number of tics per decade
+			$posns = $this->guide / $norm;
+
+			if ($posns > 20) {
+				$tics = 0.05;		// e.g. 0, .05, .10, ...
+			} else if ($posns > 10) {
+				$tics = 0.2;		// e.g.  0, .1, .2, ...
+			} else if ($posns > 5) {
+				$tics = 0.4;		// e.g.  0, 0.2, 0.4, ...
+			} else if ($posns > 3) {
+				$tics = 0.5;		// e.g. 0, 0.5, 1, ...
+			} else if ($posns > 2) {
+				$tics = 1;		// e.g. 0, 1, 2, ...
+			} else if ($posns > 0.25) {
+				$tics = 2;		// e.g. 0, 2, 4, 6 
+			} else {
+				$tics = ceil($norm);
+			}
+			
+			$this->tics = $tics * $this->magnitude;
+		}
+
+		/**
+		 * Computes automatic boundaries on the axis
+		 */
+		public function computeBoundaries() {
+			// Range
+			$this->delta = abs($this->max - $this->min);
+
+			// Check for null distribution
+			if ($this->delta == 0)
+				$this->delta = 1;
+			
+			// Order of magnitude of range
+			$this->magnitude = pow(10, floor(log10($this->delta)));
+			
+			$this->quantizeTics();
+
+			$this->displayMin = floor($this->min / $this->tics) * $this->tics;
+			$this->displayMax = ceil($this->max / $this->tics) * $this->tics;
+			$this->displayDelta = $this->displayMax - $this->displayMin;
+		
+			// Check for null distribution
+			if ($this->displayDelta == 0) {
+				$this->displayDelta = 1;
+			}
+		}
+
+		/**
+		 * Get the lower boundary on the axis3
+		 *
+		 * @return integer lower boundary on the axis
+		 */
+		public function getLowerBoundary() {
+			return $this->displayMin;
+		}
+
+		/**
+		 * Get the upper boundary on the axis3
+		 *
+		 * @return integer upper boundary on the axis
+		 */
+		public function getUpperBoundary() {
+			return $this->displayMax;
+		}
+
+		/**
+		 * Get the value between two ticks3
+		 *
+		 * @return integer value between two ticks
+		 */
+		public function getTics() {
+			return $this->tics;
+		}
+	}
+?>

webui/system/helper/libchart/classes/view/axis/Bound.php

@@ -0,0 +1,156 @@
+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+	
+	/**
+	 * Object representing the bounds of a dataset (its minimal and maximal values) on its vertical axis.
+	 * The bounds are automatically calculated from a XYDataSet or XYSeriesDataSet.
+	 * Default (calculated) bounds can be overriden using the setLowerBound() and setUpperBound() methods.
+	 *
+	 * @author Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * Created on 25 july 2007
+	 */
+	 class Bound {
+		/**
+		 * Manually set lower bound, overrides the value calculated by computeBound().
+		 */
+		private $lowerBound = null;
+
+		/**
+		 * Manually set upper bound, overrides the value calculated by computeBound().
+		 */
+		private $upperBound = null;
+		
+		/**
+		 * Computed min bound.
+		 */
+		private $yMinValue = null;
+		
+		/**
+		 * Computed max bound.
+		 */
+		private $yMaxValue = null;
+		
+		/**
+		 * Compute the boundaries on the axis.
+		 *
+		 * @param dataSet The data set
+		 */
+		public function computeBound($dataSet) {
+			// Check if the data set is empty
+			$dataSetEmpty = true;
+			$serieList = null;
+			if ($dataSet instanceof XYDataSet) {
+				$pointList = $dataSet->getPointList();
+				$dataSetEmpty = count($pointList) == 0;
+				
+				if (!$dataSetEmpty) {
+					// Process it as a serie
+					$serieList = array();
+					array_push($serieList, $dataSet);
+				}
+			} else if ($dataSet instanceof XYSeriesDataSet) {
+				$serieList = $dataSet->getSerieList();
+				if (count($serieList) > 0) {
+					$serie = current($serieList);
+					$dataSetEmpty = count($serie) == 0;
+				}
+			} else {
+				die("Error: unknown dataset type");
+			}
+			
+			// If the dataset is empty, default some bounds
+			$yMin = 0;
+			$yMax = 1;
+			if (!$dataSetEmpty) {
+				// Compute lower and upper bound on the value axis
+				unset($yMin);
+				unset($yMax);
+
+				foreach ($serieList as $serie) {
+					foreach ($serie->getPointList() as $point) {
+						$y = $point->getY();
+						
+						if (!isset($yMin)) {
+							$yMin = $y;
+							$yMax = $y;
+						} else {
+							if ($y < $yMin) {
+								$yMin = $y;
+							}
+			
+							if ($y > $yMax) {
+								$yMax = $y;
+							}
+						}
+					}
+				}
+			}
+
+			// If user specified bounds and they are actually greater than computer bounds, override computed bounds
+			if (isset($this->lowerBound) && $this->lowerBound < $yMin) {
+				$this->yMinValue = $this->lowerBound;
+			} else {
+				$this->yMinValue = $yMin;
+			}
+
+			if (isset($this->upperBound) && $this->upperBound > $yMax) {
+				$this->yMaxValue = $this->upperBound;
+			} else {
+				$this->yMaxValue = $yMax;
+			}
+		}
+
+		/**
+		 * Getter of yMinValue.
+		 *
+		 * @return min bound
+		 */
+		public function getYMinValue() {
+			return $this->yMinValue;
+		}
+
+		/**
+		 * Getter of yMaxValue.
+		 *
+		 * @return max bound
+		 */
+		public function getYMaxValue() {
+			return $this->yMaxValue;
+		}
+
+		/**
+		 * Set manually the lower boundary value (overrides the automatic formatting).
+		 * Typical usage is to set the bars starting from zero.
+		 *
+		 * @param double lower boundary value
+		 */
+		public function setLowerBound($lowerBound) {
+			$this->lowerBound = $lowerBound;
+		}
+
+		/**
+		 * Set manually the upper boundary value (overrides the automatic formatting).
+		 *
+		 * @param double upper boundary value
+		 */
+		public function setUpperBound($upperBound) {
+			$this->upperBound = $upperBound;
+		}
+	 }
+?>

webui/system/helper/libchart/classes/view/caption/Caption.php

@@ -0,0 +1,112 @@
+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+	
+	/**
+	 * Caption.
+	 *
+	 * @author Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * Created on 30 july 2007
+	 */
+	class Caption {
+		protected $labelBoxWidth;
+		protected $labelBoxHeight;
+	
+		// Plot
+		protected $plot;
+		
+		// Label list
+		protected $labelList;
+		
+		// Color set
+		protected $colorSet;
+		
+		/**
+		 * Constructor of Caption
+		 */
+		public function Caption() {
+			$this->labelBoxWidth = 15;
+			$this->labelBoxHeight = 15;
+		}
+		
+		/**
+		 * Render the caption.
+		 */
+		public function render() {
+			// Get graphical obects
+			$img = $this->plot->getImg();
+			$palette = $this->plot->getPalette();
+			$text = $this->plot->getText();
+			$primitive = $this->plot->getPrimitive();
+			
+			// Get the caption area
+			$captionArea = $this->plot->getCaptionArea();
+
+			// Get the pie color set
+			$colorSet = $this->colorSet;
+			$colorSet->reset();
+			
+			$i = 0;
+			foreach ($this->labelList as $label) {
+				// Get the next color
+				$color = $colorSet->currentColor();
+				$colorSet->next();
+
+				$boxX1 = $captionArea->x1;
+				$boxX2 = $boxX1 + $this->labelBoxWidth;
+				$boxY1 = $captionArea->y1 + 5 + $i * ($this->labelBoxHeight + 5);
+				$boxY2 = $boxY1 + $this->labelBoxHeight;
+
+				$primitive->outlinedBox($boxX1, $boxY1, $boxX2, $boxY2, $palette->axisColor[0], $palette->axisColor[1]);
+				imagefilledrectangle($img, $boxX1 + 2, $boxY1 + 2, $boxX2 - 2, $boxY2 - 2, $color->getColor($img));
+
+				$text->printText($img, $boxX2 + 5, $boxY1 + $this->labelBoxHeight / 2, $this->plot->getTextColor(), $label, $text->fontCondensed, $text->VERTICAL_CENTER_ALIGN);
+
+				$i++;
+			}
+		}
+
+		/**
+		 * Sets the plot.
+		 *
+		 * @param Plot The plot
+		 */
+		public function setPlot($plot) {
+			$this->plot = $plot;
+		}
+		
+		/**
+		 * Sets the label list.
+		 *
+		 * @param Array label list
+		 */
+		public function setLabelList($labelList) {
+			$this->labelList = $labelList;
+		}
+		
+		
+		/**
+		 * Sets the color set.
+		 *
+		 * @param Array Color set
+		 */
+		public function setColorSet($colorSet) {
+			$this->colorSet = $colorSet;
+		}
+	}
+?>

webui/system/helper/libchart/classes/view/chart/BarChart.php

@@ -0,0 +1,183 @@
+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+	
+	/**
+	 * Base abstract class for rendering both horizontal and vertical bar charts.
+	 *
+	 * @author Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 */
+	abstract class BarChart extends Chart {
+		protected $bound;
+		protected $axis;
+		protected $hasSeveralSerie;
+		
+		/**
+		 * Creates a new bar chart.
+		 *
+		 * @param integer width of the image
+		 * @param integer height of the image
+		 */
+		protected function BarChart($width, $height) {
+			parent::Chart($width, $height);
+
+			// Initialize the bounds
+			$this->bound = new Bound();
+			$this->bound->setLowerBound(0);
+		}
+
+		/**
+		 * Compute the axis.
+		 */
+		protected function computeAxis() {
+			$this->axis = new Axis($this->bound->getYMinValue(), $this->bound->getYMaxValue());
+			$this->axis->computeBoundaries();
+		}
+
+		/**
+		 * Create the image.
+		 */
+		protected function createImage() {
+			parent::createImage();
+
+			// Get graphical obects
+			$img = $this->plot->getImg();
+			$palette = $this->plot->getPalette();
+			$text = $this->plot->getText();
+			$primitive = $this->plot->getPrimitive();
+			
+			// Get the graph area
+			$graphArea = $this->plot->getGraphArea();
+
+			// Aqua-like background
+			for ($i = $graphArea->y1; $i < $graphArea->y2; $i++) {
+				$color = $palette->backgroundColor[($i + 3) % 4];
+				$primitive->line($graphArea->x1, $i, $graphArea->x2, $i, $color);
+			}
+
+			// Axis
+			imagerectangle($img, $graphArea->x1 - 1, $graphArea->y1, $graphArea->x1, $graphArea->y2, $palette->axisColor[0]->getColor($img));
+			imagerectangle($img, $graphArea->x1 - 1, $graphArea->y2, $graphArea->x2, $graphArea->y2 + 1, $palette->axisColor[0]->getColor($img));
+		}
+
+		/**
+		 * Returns true if the data set has some data.
+		 * @param minNumberOfPoint Minimum number of points (1 for bars, 2 for lines).
+		 *
+		 * @return true if data set empty
+		 */
+		protected function isEmptyDataSet($minNumberOfPoint) {
+			if ($this->dataSet instanceof XYDataSet) {
+				$pointList = $this->dataSet->getPointList();
+				$pointCount = count($pointList);
+				return $pointCount < $minNumberOfPoint;
+			} else if ($this->dataSet instanceof XYSeriesDataSet) {
+				$serieList = $this->dataSet->getSerieList();
+				reset($serieList);
+				if (count($serieList) > 0) {
+					$serie = current($serieList);
+					$pointList = $serie->getPointList();
+					$pointCount = count($pointList);
+					return $pointCount < $minNumberOfPoint;
+				}
+			} else {
+				die("Error: unknown dataset type");
+			}
+		}
+
+		/**
+		 * Checks the data model before rendering the graph.
+		 */
+		protected function checkDataModel() {
+			// Check if a dataset was defined
+			if (!$this->dataSet) {
+				die("Error: No dataset defined.");
+			}
+			
+			// Bar charts accept both XYDataSet and XYSeriesDataSet
+			if ($this->dataSet instanceof XYDataSet) {
+				// The dataset contains only one serie
+				$this->hasSeveralSerie = false;
+			} else if ($this->dataSet instanceof XYSeriesDataSet) {
+				// Check if each series has the same number of points
+				unset($lastPointCount);
+				$serieList = $this->dataSet->getSerieList();
+				for ($i = 0; $i < count($serieList); $i++) {
+					$serie = $serieList[$i];
+					$pointCount = count($serie->getPointList());
+					if (isset($lastPointCount) && $pointCount != $lastPointCount) {
+						die("Error: serie <" . $i . "> doesn't have the same number of points as last serie (last one: <" . $lastPointCount. ">, this one: <" . $pointCount. ">).");
+					}
+					$lastPointCount = $pointCount;
+				}
+				
+				// The dataset contains several series
+				$this->hasSeveralSerie = true;
+			} else {
+				die("Error: Bar chart accept only XYDataSet and XYSeriesDataSet");
+			}
+		}
+
+		/**
+		 * Return the data as a series list (for consistency).
+		 *
+		 * @return List of series
+		 */
+		protected function getDataAsSerieList() {
+			// Get the data as a series list
+			$serieList = null;
+			if ($this->dataSet instanceof XYSeriesDataSet) {
+				$serieList = $this->dataSet->getSerieList();
+			} else if ($this->dataSet instanceof XYDataSet) {
+				$serieList = array();
+				array_push($serieList, $this->dataSet);
+			}
+			
+			return $serieList;
+		}
+		
+		/**
+		 * Return the first serie of the list, or the dataSet itself if there is no serie.
+		 *
+		 * @return XYDataSet
+		 */
+		protected function getFirstSerieOfList() {
+			$pointList = null;
+			if ($this->dataSet instanceof XYSeriesDataSet) {
+				// For a series dataset, print the legend from the first serie
+				$serieList = $this->dataSet->getSerieList();
+				reset($serieList);
+				$serie = current($serieList);
+				$pointList = $serie->getPointList();
+			} else if ($this->dataSet instanceof XYDataSet) {
+				$pointList = $this->dataSet->getPointList();
+			}
+			
+			return $pointList;
+		}
+		
+		/**
+		 * Retourns the bound.
+		 *
+		 * @return bound Bound
+		 */
+		public function getBound() {
+			return $this->bound;
+		}
+	}
+?>

webui/system/helper/libchart/classes/view/chart/Chart.php

@@ -0,0 +1,102 @@
+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+	
+	/*! \mainpage Libchart
+	 *
+	 * This is the reference API, automatically compiled by <a href="http://www.stack.nl/~dimitri/doxygen/">Doxygen</a>.
+	 * You can find here information that is not covered by the <a href="../samplecode/">tutorial</a>.
+	 *
+	 */
+
+	/**
+	 * Base chart class.
+	 *
+	 * @author Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 */
+	abstract class Chart {
+		/**
+		 * The data set.
+		 */
+		protected $dataSet;
+	
+		/**
+		 * Plot (holds graphical attributes).
+		 */
+		protected $plot;
+
+		/**
+		 * Abstract constructor of Chart.
+		 *
+		 * @param integer width of the image
+		 * @param integer height of the image
+		 */
+		protected function Chart($width, $height) {
+			// Creates the plot
+			$this->plot = new Plot($width, $height);
+			$this->plot->setTitle("Untitled chart");
+			//$this->plot->setLogoFileName(dirname(__FILE__) . "/../../../images/PoweredBy.png");
+		}
+
+		/**
+		 * Checks the data model before rendering the graph.
+		 */
+		protected function checkDataModel() {
+			// Check if a dataset was defined
+			if (!$this->dataSet) {
+				die("Error: No dataset defined.");
+			}
+			
+			// Maybe no points are defined, but that's ok. This will yield and empty graph with default boundaries.
+		}
+		
+		/**
+		 * Create the image.
+		 */
+		protected function createImage() {
+			$this->plot->createImage();
+		}
+
+		/**
+		 * Sets the data set.
+		 *
+		 * @param dataSet The data set
+		 */
+		public function setDataSet($dataSet) {
+			$this->dataSet = $dataSet;
+		}
+		
+		/**
+		 * Return the plot.
+		 *
+		 * @return plot
+		 */
+		public function getPlot() {
+			return $this->plot;
+		}
+		
+		/**
+		 * Sets the title.
+		 *
+		 * @param string New title
+		 */
+		public function setTitle($title) {
+			$this->plot->setTitle($title);
+		}
+	}
+?>

webui/system/helper/libchart/classes/view/chart/HorizontalBarChart.php

@@ -0,0 +1,217 @@
+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+	
+	/**
+	 * Horizontal bar chart
+	 *
+	 * @author Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 */
+	class HorizontalBarChart extends BarChart {
+		/**
+		 * Ratio of empty space beside the bars.
+		 */
+		private $emptyToFullRatio;
+	
+		/**
+		 * Creates a new horizontal bar chart.
+		 *
+		 * @param integer width of the image
+		 * @param integer height of the image
+		 */
+		public function HorizontalBarChart($width = 600, $height = 250) {
+			parent::BarChart($width, $height);
+
+			$this->emptyToFullRatio = 1 / 5;
+			$this->plot->setGraphPadding(new Padding(5, 30, 30, 50));
+		}
+
+		/**
+		 * Computes the layout.
+		 */
+		protected function computeLayout() {
+			if ($this->hasSeveralSerie) {
+				$this->plot->setHasCaption(true);
+			}
+			$this->plot->computeLayout();
+		}
+		
+		/**
+		 * Print the axis.
+		 */
+		protected function printAxis() {
+			$minValue = $this->axis->getLowerBoundary();
+			$maxValue = $this->axis->getUpperBoundary();
+			$stepValue = $this->axis->getTics();
+
+			// Get graphical obects
+			$img = $this->plot->getImg();
+			$palette = $this->plot->getPalette();
+			$text = $this->plot->getText();
+			
+			// Get the graph area
+			$graphArea = $this->plot->getGraphArea();
+
+			// Horizontal axis
+			for ($value = $minValue; $value <= $maxValue; $value += $stepValue) {
+				$x = $graphArea->x1 + ($value - $minValue) * ($graphArea->x2 - $graphArea->x1) / ($this->axis->displayDelta);
+
+				imagerectangle($img, $x - 1, $graphArea->y2 + 2, $x, $graphArea->y2 + 3, $palette->axisColor[0]->getColor($img));
+				imagerectangle($img, $x - 1, $graphArea->y2, $x, $graphArea->y2 + 1, $palette->axisColor[1]->getColor($img));
+
+				$text->printText($img, $x, $graphArea->y2 + 5, $this->plot->getTextColor(), $value, $text->fontCondensed, $text->HORIZONTAL_CENTER_ALIGN);
+			}
+
+			// Get first serie of a list
+			$pointList = $this->getFirstSerieOfList();
+
+			// Vertical Axis
+			$pointCount = count($pointList);
+			reset($pointList);
+			$rowHeight = ($graphArea->y2 - $graphArea->y1) / $pointCount;
+			reset($pointList);
+			for ($i = 0; $i <= $pointCount; $i++) {
+				$y = $graphArea->y2 - $i * $rowHeight;
+
+				imagerectangle($img, $graphArea->x1 - 3, $y, $graphArea->x1 - 2, $y + 1, $palette->axisColor[0]->getColor($img));
+				imagerectangle($img, $graphArea->x1 - 1, $y, $graphArea->x1, $y + 1, $palette->axisColor[1]->getColor($img));
+
+				if ($i < $pointCount) {
+					$point = current($pointList);
+					next($pointList);
+	
+					$label = $point->getX();
+
+					$text->printText($img, $graphArea->x1 - 5, $y - $rowHeight / 2, $this->plot->getTextColor(), $label, $text->fontCondensed, $text->HORIZONTAL_RIGHT_ALIGN | $text->VERTICAL_CENTER_ALIGN);
+				}
+			}
+		}
+
+		/**
+		 * Print the bars.
+		 */
+		protected function printBar() {
+			// Get the data as a list of series for consistency
+			$serieList = $this->getDataAsSerieList();
+			
+			// Get graphical obects
+			$img = $this->plot->getImg();
+			$palette = $this->plot->getPalette();
+			$text = $this->plot->getText();
+
+			// Get the graph area
+			$graphArea = $this->plot->getGraphArea();
+
+			$minValue = $this->axis->getLowerBoundary();
+			$maxValue = $this->axis->getUpperBoundary();
+			$stepValue = $this->axis->getTics();
+			
+			$barColorSet = $palette->barColorSet;
+			$barColorSet->reset();
+
+			$serieCount = count($serieList);
+			for ($j = 0; $j < $serieCount; $j++) {
+				$serie = $serieList[$j];
+				$pointList = $serie->getPointList();
+				$pointCount = count($pointList);
+				reset($pointList);
+				
+				// Get the next color
+				$color = $barColorSet->currentColor();
+				$shadowColor = $barColorSet->currentShadowColor();
+				$barColorSet->next();
+
+				$rowHeight = ($graphArea->y2 - $graphArea->y1) / $pointCount;
+				for ($i = 0; $i < $pointCount; $i++) {
+					$y = $graphArea->y2 - $i * $rowHeight;
+
+					$point = current($pointList);
+					next($pointList);
+
+					$value = $point->getY();
+					
+					$xmax = $graphArea->x1 + ($value - $minValue) * ($graphArea->x2 - $graphArea->x1) / ($this->axis->displayDelta);
+
+					// Bar dimensions
+					$yWithMargin = $y - $rowHeight * $this->emptyToFullRatio;
+					$rowWidthWithMargin = $rowHeight * (1 - $this->emptyToFullRatio * 2);
+					$barWidth = $rowWidthWithMargin / $serieCount;
+					$barOffset = $barWidth * $j;
+					$y1 = $yWithMargin - $barWidth - $barOffset;
+					$y2 = $yWithMargin - $barOffset - 1;
+
+					// Text
+					$text->printText($img, $xmax + 5, $y2 - $barWidth / 2, $this->plot->getTextColor(), $value, $text->fontCondensed, $text->VERTICAL_CENTER_ALIGN);
+
+					imagefilledrectangle($img, $graphArea->x1 + 1, $y1, $xmax, $y2, $shadowColor->getColor($img));
+					
+					// Prevents drawing a small box when x = 0
+					if ($graphArea->x1 != $xmax) {
+						imagefilledrectangle($img, $graphArea->x1 + 2, $y1 + 1, $xmax - 4, $y2, $color->getColor($img));
+					}
+				}
+			}
+		}
+		
+		/**
+		 * Renders the caption.
+		 */
+		protected function printCaption() {
+			// Get the list of labels
+			$labelList = $this->dataSet->getTitleList();
+			
+			// Create the caption
+			$caption = new Caption();
+			$caption->setPlot($this->plot);
+			$caption->setLabelList($labelList);
+			
+			$palette = $this->plot->getPalette();
+			$barColorSet = $palette->barColorSet;
+			$caption->setColorSet($barColorSet);
+			
+			// Render the caption
+			$caption->render();
+		}
+
+		/**
+		 * Render the chart image.
+		 *
+		 * @param string name of the file to render the image to (optional)
+		 */
+		public function render($fileName = null) {
+			// Check the data model
+			$this->checkDataModel();
+			
+			$this->bound->computeBound($this->dataSet);
+			$this->computeAxis();
+			$this->computeLayout();
+			$this->createImage();
+			$this->plot->printLogo();
+			$this->plot->printTitle();
+			if (!$this->isEmptyDataSet(1)) {
+				$this->printAxis();
+				$this->printBar();
+				if ($this->hasSeveralSerie) {
+					$this->printCaption();
+				}
+			}
+
+			$this->plot->render($fileName);
+		}
+	}
+?>

webui/system/helper/libchart/classes/view/chart/LineChart.php

@@ -0,0 +1,200 @@
+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+	
+	/**
+	 * Line chart.
+	 *
+	 * @author Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 */
+	class LineChart extends BarChart {
+		/**
+		 * Creates a new line chart.
+		 * Line charts allow for XYDataSet and XYSeriesDataSet in order to plot several lines.
+		 *
+		 * @param integer width of the image
+		 * @param integer height of the image
+		 */
+		public function LineChart($width = 600, $height = 250) {
+			parent::BarChart($width, $height);
+
+			$this->plot->setGraphPadding(new Padding(5, 30, 50, 50));
+		}
+
+		/**
+		 * Computes the layout.
+		 */
+		protected function computeLayout() {
+			if ($this->hasSeveralSerie) {
+				$this->plot->setHasCaption(true);
+			}
+			$this->plot->computeLayout();
+		}
+		
+		/**
+		 * Print the axis.
+		 */
+		protected function printAxis() {
+			$minValue = $this->axis->getLowerBoundary();
+			$maxValue = $this->axis->getUpperBoundary();
+			$stepValue = $this->axis->getTics();
+
+			// Get graphical obects
+			$img = $this->plot->getImg();
+			$palette = $this->plot->getPalette();
+			$text = $this->plot->getText();
+			
+			// Get the graph area
+			$graphArea = $this->plot->getGraphArea();
+			
+			// Vertical axis
+			for ($value = $minValue; $value <= $maxValue; $value += $stepValue) {
+				$y = $graphArea->y2 - ($value - $minValue) * ($graphArea->y2 - $graphArea->y1) / ($this->axis->displayDelta);
+
+				imagerectangle($img, $graphArea->x1 - 3, $y, $graphArea->x1 - 2, $y + 1, $palette->axisColor[0]->getColor($img));
+				imagerectangle($img, $graphArea->x1 - 1, $y, $graphArea->x1, $y + 1, $palette->axisColor[1]->getColor($img));
+
+				$text->printText($img, $graphArea->x1 - 5, $y, $this->plot->getTextColor(), $value, $text->fontCondensed, $text->HORIZONTAL_RIGHT_ALIGN | $text->VERTICAL_CENTER_ALIGN);
+			}
+
+			// Get first serie of a list
+			$pointList = $this->getFirstSerieOfList();
+			
+			// Horizontal Axis
+			$pointCount = count($pointList);
+			reset($pointList);
+			$columnWidth = ($graphArea->x2 - $graphArea->x1) / ($pointCount - 1);
+
+			for ($i = 0; $i < $pointCount; $i++) {
+				$x = $graphArea->x1 + $i * $columnWidth;
+
+				imagerectangle($img, $x - 1, $graphArea->y2 + 2, $x, $graphArea->y2 + 3, $palette->axisColor[0]->getColor($img));
+				imagerectangle($img, $x - 1, $graphArea->y2, $x, $graphArea->y2 + 1, $palette->axisColor[1]->getColor($img));
+
+				$point = current($pointList);
+				next($pointList);
+
+				$label = $point->getX();
+
+				$text->printDiagonal($img, $x - 5, $graphArea->y2 + 10, $this->plot->getTextColor(), $label);
+			}
+		}
+
+		/**
+		 * Print the lines.
+		 */
+		protected function printLine() {
+			$minValue = $this->axis->getLowerBoundary();
+			$maxValue = $this->axis->getUpperBoundary();
+			
+			// Get the data as a list of series for consistency
+			$serieList = $this->getDataAsSerieList();
+			
+			// Get graphical obects
+			$img = $this->plot->getImg();
+			$palette = $this->plot->getPalette();
+			$text = $this->plot->getText();
+			$primitive = $this->plot->getPrimitive();
+			
+			// Get the graph area
+			$graphArea = $this->plot->getGraphArea();
+			
+			$lineColorSet = $palette->lineColorSet;
+			$lineColorSet->reset();
+			for ($j = 0; $j < count($serieList); $j++) {
+				$serie = $serieList[$j];
+				$pointList = $serie->getPointList();
+				$pointCount = count($pointList);
+				reset($pointList);
+
+				$columnWidth = ($graphArea->x2 - $graphArea->x1) / ($pointCount - 1);
+
+				$lineColor = $lineColorSet->currentColor();
+				$lineColorShadow = $lineColorSet->currentShadowColor();
+				$lineColorSet->next();
+				$x1 = null;
+				$y1 = null;
+				for ($i = 0; $i < $pointCount; $i++) {
+					$x2 = $graphArea->x1 + $i * $columnWidth;
+
+					$point = current($pointList);
+					next($pointList);
+
+					$value = $point->getY();
+					
+					$y2 = $graphArea->y2 - ($value - $minValue) * ($graphArea->y2 - $graphArea->y1) / ($this->axis->displayDelta);
+
+					// Draw line 
+					if ($x1) {
+						$primitive->line($x1, $y1, $x2, $y2, $lineColor, 4);
+						$primitive->line($x1, $y1 - 1, $x2, $y2 - 1, $lineColorShadow, 2);
+					}
+					
+					$x1 = $x2;
+					$y1 = $y2;
+				}
+			}
+		}
+		
+		/**
+		 * Renders the caption.
+		 */
+		protected function printCaption() {
+			// Get the list of labels
+			$labelList = $this->dataSet->getTitleList();
+			
+			// Create the caption
+			$caption = new Caption();
+			$caption->setPlot($this->plot);
+			$caption->setLabelList($labelList);
+			
+			$palette = $this->plot->getPalette();
+			$lineColorSet = $palette->lineColorSet;
+			$caption->setColorSet($lineColorSet);
+			
+			// Render the caption
+			$caption->render();
+		}
+
+		/**
+		 * Render the chart image.
+		 *
+		 * @param string name of the file to render the image to (optional)
+		 */
+		public function render($fileName = null) {
+			// Check the data model
+			$this->checkDataModel();
+
+			$this->bound->computeBound($this->dataSet);
+			$this->computeAxis();
+			$this->computeLayout();
+			$this->createImage();
+			$this->plot->printLogo();
+			$this->plot->printTitle();
+			if (!$this->isEmptyDataSet(2)) {
+				$this->printAxis();
+				$this->printLine();
+				if ($this->hasSeveralSerie) {
+					$this->printCaption();
+				}
+			}
+
+			$this->plot->render($fileName);
+		}
+	}
+?>

webui/system/helper/libchart/classes/view/chart/PieChart.php

@@ -0,0 +1,261 @@
+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+	
+	/**
+	 * Pie chart.
+	 *
+	 * @author Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 */
+	class PieChart extends Chart {
+		protected $pieCenterX;
+		protected $pieCenterY;
+	
+		/**
+		 * Constructor of a pie chart.
+		 *
+		 * @param integer width of the image
+		 * @param integer height of the image
+		 */
+		public function PieChart($width = 600, $height = 250) {
+			parent::Chart($width, $height);
+			$this->plot->setGraphPadding(new Padding(15, 10, 30, 30));
+		}
+
+		/**
+		 * Computes the layout.
+		 */
+		protected function computeLayout() {
+			$this->plot->setHasCaption(true);
+			$this->plot->computeLayout();
+			
+			// Get the graph area
+			$graphArea = $this->plot->getGraphArea();
+
+			// Compute the coordinates of the pie
+			$this->pieCenterX = $graphArea->x1 + ($graphArea->x2 - $graphArea->x1) / 2;
+			$this->pieCenterY = $graphArea->y1 + ($graphArea->y2 - $graphArea->y1) / 2;
+
+			$this->pieWidth = round(($graphArea->x2 - $graphArea->x1) * 4 / 5);
+			$this->pieHeight = round(($graphArea->y2 - $graphArea->y1) * 3.7 / 5);
+			$this->pieDepth = round($this->pieWidth * 0.05);
+		}
+		
+		/**
+		 * Compare two sampling point values, order from biggest to lowest value.
+		 *
+		 * @param double first value
+		 * @param double second value
+		 * @return integer result of the comparison
+		 */
+		protected function sortPie($v1, $v2) {
+			return $v1[0] == $v2[0] ? 0 :
+				$v1[0] > $v2[0] ? -1 :
+				1;
+		}
+		
+		/**
+		 * Compute pie values in percentage and sort them.
+		 */
+		protected function computePercent() {
+			$this->total = 0;
+			$this->percent = array();
+
+			$pointList = $this->dataSet->getPointList();
+			foreach ($pointList as $point) {
+				$this->total += $point->getY();
+			}
+
+			foreach ($pointList as $point) {
+				$percent = $this->total == 0 ? 0 : 100 * $point->getY() / $this->total;
+
+				array_push($this->percent, array($percent, $point));
+			}
+
+			usort($this->percent, array("PieChart", "sortPie"));
+		}
+
+		/**
+		 * Creates the pie chart image.
+		 */
+		protected function createImage() {
+			parent::createImage();
+
+			// Get graphical obects
+			$img = $this->plot->getImg();
+			$palette = $this->plot->getPalette();
+			$primitive = $this->plot->getPrimitive();
+			
+			// Get the graph area
+			$graphArea = $this->plot->getGraphArea();
+
+			// Legend box
+			$primitive->outlinedBox($graphArea->x1, $graphArea->y1, $graphArea->x2, $graphArea->y2, $palette->axisColor[0], $palette->axisColor[1]);
+
+			// Aqua-like background
+			for ($i = $graphArea->y1 + 2; $i < $graphArea->y2 - 1; $i++) {
+				$color = $palette->backgroundColor[($i + 3) % 4];
+				$primitive->line($graphArea->x1 + 2, $i, $graphArea->x2 - 2, $i, $color);
+			}
+		}
+
+		/**
+		 * Renders the caption.
+		 */
+		protected function printCaption() {
+			// Create a list of labels
+			$labelList = array();
+			foreach($this->percent as $percent) {
+				list($percent, $point) = $percent;
+				$label = $point->getX();
+				
+				array_push($labelList, $label);
+			}
+			
+			// Create the caption
+			$caption = new Caption();
+			$caption->setPlot($this->plot);
+			$caption->setLabelList($labelList);
+			
+			$palette = $this->plot->getPalette();
+			$pieColorSet = $palette->pieColorSet;
+			$caption->setColorSet($pieColorSet);
+
+			// Render the caption
+			$caption->render();
+		}
+
+		/**
+		 * Draw a 2D disc.
+		 *
+		 * @param integer Center coordinate (y)
+		 * @param array Colors for each portion
+		 * @param bitfield Drawing mode
+		 */
+		protected function drawDisc($cy, $colorArray, $mode) {
+			// Get graphical obects
+			$img = $this->plot->getImg();
+
+			$i = 0;
+			$oldAngle = 0;
+			$percentTotal = 0;
+
+			foreach ($this->percent as $a) {
+				list ($percent, $point) = $a;
+
+				// If value is null, don't draw this arc
+				if ($percent <= 0) {
+					continue;
+				}
+				
+				$color = $colorArray[$i % count($colorArray)];
+
+				$percentTotal += $percent;
+				$newAngle = $percentTotal * 360 / 100;
+
+				// imagefilledarc doesn't like null values (#1)
+				if ($newAngle - $oldAngle >= 1) {
+					imagefilledarc($img, $this->pieCenterX, $cy, $this->pieWidth, $this->pieHeight, $oldAngle, $newAngle, $color->getColor($img), $mode);
+				}
+
+				$oldAngle = $newAngle;
+
+				$i++;
+			}
+		}
+
+		/**
+		 * Print the percentage text.
+		 */
+		protected function drawPercent() {
+			// Get graphical obects
+			$img = $this->plot->getImg();
+			$palette = $this->plot->getPalette();
+			$text = $this->plot->getText();
+			$primitive = $this->plot->getPrimitive();
+			
+			$angle1 = 0;
+			$percentTotal = 0;
+
+			foreach ($this->percent as $a) {
+				list ($percent, $point) = $a;
+
+				// If value is null, the arc isn't drawn, no need to display percent
+				if ($percent <= 0) {
+					continue;
+				}
+
+				$percentTotal += $percent;
+				$angle2 = $percentTotal * 2 * M_PI / 100;
+
+				$angle = $angle1 + ($angle2 - $angle1) / 2;
+				$label = number_format($percent) . "%";
+
+				$x = cos($angle) * ($this->pieWidth + 35) / 2 + $this->pieCenterX;
+				$y = sin($angle) * ($this->pieHeight + 35) / 2 + $this->pieCenterY;
+
+				$text->printText($img, $x, $y, $this->plot->getTextColor(), $label, $text->fontCondensed, $text->HORIZONTAL_CENTER_ALIGN | $text->VERTICAL_CENTER_ALIGN);
+
+				$angle1 = $angle2;
+			}
+		}
+
+		/**
+		 * Print the pie chart.
+		 */
+		protected function printPie() {
+			// Get graphical obects
+			$img = $this->plot->getImg();
+			$palette = $this->plot->getPalette();
+			$text = $this->plot->getText();
+			$primitive = $this->plot->getPrimitive();
+
+			// Get the pie color set
+			$pieColorSet = $palette->pieColorSet;
+			$pieColorSet->reset();
+
+			// Silhouette
+			for ($cy = $this->pieCenterY + $this->pieDepth / 2; $cy >= $this->pieCenterY - $this->pieDepth / 2; $cy--) {
+				$this->drawDisc($cy, $palette->pieColorSet->shadowColorList, IMG_ARC_EDGED);
+			}
+
+			// Top
+			$this->drawDisc($this->pieCenterY - $this->pieDepth / 2, $palette->pieColorSet->colorList, IMG_ARC_PIE);
+
+			// Top Outline
+			$this->drawPercent();
+		}
+
+		/**
+		 * Render the chart image.
+		 *
+		 * @param string name of the file to render the image to (optional)
+		 */
+		public function render($fileName = null) {
+			$this->computePercent();
+			$this->computeLayout();
+			$this->createImage();
+			$this->plot->printLogo();
+			$this->plot->printTitle();
+			$this->printPie();
+			$this->printCaption();
+
+			$this->plot->render($fileName);
+		}
+	}
+?>

webui/system/helper/libchart/classes/view/chart/VerticalBarChart.php

@@ -0,0 +1,217 @@
+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+	
+	/**
+	 * Chart composed of vertical bars.
+	 *
+	 * @author Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 */
+	class VerticalBarChart extends BarChart {
+		/**
+		 * Ratio of empty space beside the bars.
+		 */
+		private $emptyToFullRatio;
+
+		/**
+		 * Creates a new vertical bar chart
+		 *
+		 * @param integer width of the image
+		 * @param integer height of the image
+		 */
+		public function VerticalBarChart($width = 600, $height = 250) {
+			parent::BarChart($width, $height);
+
+			$this->emptyToFullRatio = 1 / 5;
+			$this->plot->setGraphPadding(new Padding(5, 30, 50, 50));
+		}
+
+		/**
+		 * Computes the layout.
+		 */
+		protected function computeLayout() {
+			if ($this->hasSeveralSerie) {
+				$this->plot->setHasCaption(true);
+			}
+			$this->plot->computeLayout();
+		}
+		
+		/**
+		 * Print the horizontal and veritcal axis.
+		 */
+		protected function printAxis() {
+			$minValue = $this->axis->getLowerBoundary();
+			$maxValue = $this->axis->getUpperBoundary();
+			$stepValue = $this->axis->getTics();
+
+			// Get graphical obects
+			$img = $this->plot->getImg();
+			$palette = $this->plot->getPalette();
+			$text = $this->plot->getText();
+			
+			// Get the graph area
+			$graphArea = $this->plot->getGraphArea();
+			
+			// Vertical axis
+			for ($value = $minValue; $value <= $maxValue; $value += $stepValue) {
+				$y = $graphArea->y2 - ($value - $minValue) * ($graphArea->y2 - $graphArea->y1) / ($this->axis->displayDelta);
+
+				imagerectangle($img, $graphArea->x1 - 3, $y, $graphArea->x1 - 2, $y + 1, $palette->axisColor[0]->getColor($img));
+				imagerectangle($img, $graphArea->x1 - 1, $y, $graphArea->x1, $y + 1, $palette->axisColor[1]->getColor($img));
+
+				$text->printText($img, $graphArea->x1 - 5, $y, $this->plot->getTextColor(), $value, $text->fontCondensed, $text->HORIZONTAL_RIGHT_ALIGN | $text->VERTICAL_CENTER_ALIGN);
+			}
+
+			// Get first serie of a list
+			$pointList = $this->getFirstSerieOfList();
+
+			// Horizontal Axis
+			$pointCount = count($pointList);
+			reset($pointList);
+			$columnWidth = ($graphArea->x2 - $graphArea->x1) / $pointCount;
+			for ($i = 0; $i <= $pointCount; $i++) {
+				$x = $graphArea->x1 + $i * $columnWidth;
+
+				imagerectangle($img, $x - 1, $graphArea->y2 + 2, $x, $graphArea->y2 + 3, $palette->axisColor[0]->getColor($img));
+				imagerectangle($img, $x - 1, $graphArea->y2, $x, $graphArea->y2 + 1, $palette->axisColor[1]->getColor($img));
+
+				if ($i < $pointCount) {
+					$point = current($pointList);
+					next($pointList);
+	
+					$label = $point->getX();
+
+					$text->printDiagonal($img, $x + $columnWidth * 1 / 3, $graphArea->y2 + 10, $this->plot->getTextColor(), $label);
+				}
+			}
+		}
+
+		/**
+		 * Print the bars.
+		 */
+		protected function printBar() {
+			// Get the data as a list of series for consistency
+			$serieList = $this->getDataAsSerieList();
+			
+			// Get graphical obects
+			$img = $this->plot->getImg();
+			$palette = $this->plot->getPalette();
+			$text = $this->plot->getText();
+
+			// Get the graph area
+			$graphArea = $this->plot->getGraphArea();
+
+			$barColorSet = $palette->barColorSet;
+			$barColorSet->reset();
+
+			$minValue = $this->axis->getLowerBoundary();
+			$maxValue = $this->axis->getUpperBoundary();
+			$stepValue = $this->axis->getTics();
+
+			$serieCount = count($serieList);
+			for ($j = 0; $j < $serieCount; $j++) {
+				$serie = $serieList[$j];
+				$pointList = $serie->getPointList();
+				$pointCount = count($pointList);
+				reset($pointList);
+
+				// Get the next color
+				$color = $barColorSet->currentColor();
+				$shadowColor = $barColorSet->currentShadowColor();
+				$barColorSet->next();
+
+				$columnWidth = ($graphArea->x2 - $graphArea->x1) / $pointCount;
+				for ($i = 0; $i < $pointCount; $i++) {
+					$x = $graphArea->x1 + $i * $columnWidth;
+
+					$point = current($pointList);
+					next($pointList);
+
+					$value = $point->getY();
+					
+					$ymin = $graphArea->y2 - ($value - $minValue) * ($graphArea->y2 - $graphArea->y1) / ($this->axis->displayDelta);
+
+					// Bar dimensions
+					$xWithMargin = $x + $columnWidth * $this->emptyToFullRatio;
+					$columnWidthWithMargin = $columnWidth * (1 - $this->emptyToFullRatio * 2);
+					$barWidth = $columnWidthWithMargin / $serieCount;
+					$barOffset = $barWidth * $j;
+					$x1 = $xWithMargin + $barOffset;
+					$x2 = $xWithMargin + $barWidth + $barOffset - 1;
+
+					// Text
+					$text->printText($img, $x1 + $barWidth / 2 , $ymin - 5, $this->plot->getTextColor(), $value, $text->fontCondensed, $text->HORIZONTAL_CENTER_ALIGN | $text->VERTICAL_BOTTOM_ALIGN);
+
+					// Vertical bar
+					imagefilledrectangle($img, $x1, $ymin, $x2, $graphArea->y2 - 1, $shadowColor->getColor($img));
+
+					// Prevents drawing a small box when y = 0
+					if ($ymin != $graphArea->y2) {
+						imagefilledrectangle($img, $x1 + 1, $ymin + 1, $x2 - 4, $graphArea->y2 - 1, $color->getColor($img));
+					}
+				}
+			}
+		}
+		
+		/**
+		 * Renders the caption.
+		 */
+		protected function printCaption() {
+			// Get the list of labels
+			$labelList = $this->dataSet->getTitleList();
+			
+			// Create the caption
+			$caption = new Caption();
+			$caption->setPlot($this->plot);
+			$caption->setLabelList($labelList);
+			
+			$palette = $this->plot->getPalette();
+			$barColorSet = $palette->barColorSet;
+			$caption->setColorSet($barColorSet);
+			
+			// Render the caption
+			$caption->render();
+		}
+
+		/**
+		 * Render the chart image.
+		 *
+		 * @param string name of the file to render the image to (optional)
+		 */
+		public function render($fileName = null) {
+			// Check the data model
+			$this->checkDataModel();
+			
+			$this->bound->computeBound($this->dataSet);
+			$this->computeAxis();
+			$this->computeLayout();
+			$this->createImage();
+			$this->plot->printLogo();
+			$this->plot->printTitle();
+			if (!$this->isEmptyDataSet(1)) {
+				$this->printAxis();
+				$this->printBar();
+				if ($this->hasSeveralSerie) {
+					$this->printCaption();
+				}
+			}
+
+			$this->plot->render($fileName);
+		}
+	}
+?>

webui/system/helper/libchart/classes/view/color/Color.php

@@ -0,0 +1,99 @@
+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+	
+	/**
+	 * Color.
+	 *
+	 * @author Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 */
+	class Color {
+		private $red;
+		private $green;
+		private $blue;
+		private $alpha;
+		private $gdColor;
+	
+		/**
+		 * Creates a new color
+		 *
+		 * @param integer red [0..255]
+		 * @param integer green [0..255]
+		 * @param integer blue [0..255]
+		 * @param integer alpha [0..255]
+		 */
+		public function Color($red, $green, $blue, $alpha = 0) {
+			$this->red = (int) $red;
+			$this->green = (int) $green;
+			$this->blue = (int) $blue;
+			$this->alpha = (int) round($alpha * 127.0 / 255);
+			
+			$this->gdColor = null;
+		}
+		
+		/**
+		 * Get GD color.
+		 *
+		 * @param $img GD image resource
+		 */
+		public function getColor($img) {
+			// Checks if color has already been allocated
+			if (!$this->gdColor) {
+				if ($this->alpha == 0 || !function_exists('imagecolorallocatealpha')) {
+					$this->gdColor = imagecolorallocate($img, $this->red, $this->green, $this->blue);
+				} else {
+					$this->gdColor = imagecolorallocatealpha($img, $this->red, $this->green, $this->blue, $this->alpha);
+				}
+			}
+			
+			// Returns GD color
+			return $this->gdColor;
+		}
+		
+		/**
+		 * Clip a color component in the interval [0..255]
+		 *
+		 * @param integer Component
+		 * @return Clipped component
+		 */
+		public function clip($component) {
+			if ($component < 0) {
+				$component = 0;
+			} else if ($component > 255) {
+				$component = 255;
+			}
+			
+			return $component;
+		}
+		
+		/**
+		 * Return a new color, which is a shadow of this one.
+		 *
+		 * @param double Multiplication factor
+		 * @return Shadow color
+		 */
+		public function getShadowColor($shadowFactor) {
+			$red = $this->clip($this->red * $shadowFactor);
+			$green = $this->clip($this->green * $shadowFactor);
+			$blue = $this->clip($this->blue * $shadowFactor);
+			$shadowColor = new Color($red, $green, $blue);
+			
+			return $shadowColor;
+		}
+	}
+?>

webui/system/helper/libchart/classes/view/color/ColorSet.php

@@ -0,0 +1,88 @@
+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+	
+	/**
+	 * A set of colors, used for drawing series of data.
+	 *
+	 * @author Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * Created on 26 july 2007
+	 */
+	class ColorSet {
+		public $colorList;
+		public $shadowColorList;
+	
+		/**
+		 * ColorSet constructor.
+		 *
+		 * @param $shadowFactor Shadow factor
+		 * @param $colorArray Colors as an array
+		 */
+		public function ColorSet($colorList, $shadowFactor) {
+			$this->colorList = $colorList;
+			$this->shadowColorList = array();
+
+			// Generate the shadow color set
+			foreach ($colorList as $color) {
+				$shadowColor = $color->getShadowColor($shadowFactor);
+
+				array_push($this->shadowColorList, $shadowColor);
+			}
+		}
+		
+		/**
+		 * Reset the iterator over the collections of colors.
+		 */
+		public function reset() {
+			reset($this->colorList);
+			reset($this->shadowColorList);
+		}
+
+		/**
+		 * Iterate over the colors and shadow colors. When we go after the last one, loop over.
+		 *
+		 */
+		public function next() {
+			$value = next($this->colorList);
+			next($this->shadowColorList);
+			
+			// When we go after the last value, loop over.
+			if ($value == FALSE) {
+				$this->reset();
+			}
+		}
+
+		/**
+		 * Returns the current color.
+		 *
+		 * @return Current color
+		 */
+		public function currentColor() {
+			return current($this->colorList);
+		}
+
+		/**
+		 * Returns the current shadow color.
+		 *
+		 * @return Current shadow color
+		 */
+		public function currentShadowColor() {
+			return current($this->shadowColorList);
+		}
+	}
+?>

webui/system/helper/libchart/classes/view/color/Palette.php

@@ -0,0 +1,156 @@
+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+	
+	/**
+	 * Color palette shared by all chart types.
+	 *
+	 * @author Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * Created on 25 july 2007
+	 */
+	class Palette {
+		// Plot attributes
+		public $red;
+		public $axisColor;
+		public $backgroundColor;
+		
+		// Specific chart attributes
+		public $barColorSet;
+		public $lineColorSet;
+		public $pieColorSet;
+	
+		/**
+		 * Palette constructor.
+		 */
+		public function Palette() {
+			$this->red = new Color(255, 0, 0);
+		
+			// Set the colors for the horizontal and vertical axis
+			$this->setAxisColor(array(
+					new Color(201, 201, 201),
+					new Color(158, 158, 158)
+			));
+
+			// Set the colors for the background
+			$this->setBackgroundColor(array(
+					new Color(242, 242, 242),
+					new Color(231, 231, 231),
+					new Color(239, 239, 239),
+					new Color(253, 253, 253)
+			));
+			
+			// Set the colors for the bars
+			$this->setBarColor(array(
+					new Color(42, 71, 181),
+					new Color(243, 198, 118),
+					new Color(128, 63, 35),
+					new Color(195, 45, 28),
+					new Color(224, 198, 165),
+					new Color(239, 238, 218),
+					new Color(40, 72, 59),
+					new Color(71, 112, 132),
+					new Color(167, 192, 199),
+					new Color(218, 233, 202)
+			));
+
+			// Set the colors for the lines
+			$this->setLineColor(array(
+					new Color(172, 172, 210),
+					new Color(2, 78, 0),
+					new Color(148, 170, 36),
+					new Color(233, 191, 49),
+					new Color(240, 127, 41),
+					new Color(243, 63, 34),
+					new Color(190, 71, 47),
+					new Color(135, 81, 60),
+					new Color(128, 78, 162),
+					new Color(121, 75, 255),
+					new Color(142, 165, 250),
+					new Color(162, 254, 239),
+					new Color(137, 240, 166),
+					new Color(104, 221, 71),
+					new Color(98, 174, 35),
+					new Color(93, 129, 1)
+			));
+
+			// Set the colors for the pie
+			$this->setPieColor(array(
+					new Color(2, 78, 0),
+					new Color(148, 170, 36),
+					new Color(233, 191, 49),
+					new Color(240, 127, 41),
+					new Color(243, 63, 34),
+					new Color(190, 71, 47),
+					new Color(135, 81, 60),
+					new Color(128, 78, 162),
+					new Color(121, 75, 255),
+					new Color(142, 165, 250),
+					new Color(162, 254, 239),
+					new Color(137, 240, 166),
+					new Color(104, 221, 71),
+					new Color(98, 174, 35),
+					new Color(93, 129, 1)
+			));
+		}
+		
+		/**
+		 * Set the colors for the axis.
+		 *
+		 * @param colors Array of Color
+		 */
+		public function setAxisColor($colors) {
+			$this->axisColor = $colors;
+		}
+		
+		/**
+		 * Set the colors for the background.
+		 *
+		 * @param colors Array of Color
+		 */
+		public function setBackgroundColor($colors) {
+			$this->backgroundColor = $colors;
+		}
+		
+		/**
+		 * Set the colors for the bar charts.
+		 *
+		 * @param colors Array of Color
+		 */
+		public function setBarColor($colors) {
+			$this->barColorSet = new ColorSet($colors, 0.75);
+		}
+		
+		/**
+		 * Set the colors for the line charts.
+		 *
+		 * @param colors Array of Color
+		 */
+		public function setLineColor($colors) {
+			$this->lineColorSet = new ColorSet($colors, 0.75);
+		}
+		
+		/**
+		 * Set the colors for the pie charts.
+		 *
+		 * @param colors Array of Color
+		 */
+		public function setPieColor($colors) {
+			$this->pieColorSet = new ColorSet($colors, 0.7);
+		}
+	}
+?>

webui/system/helper/libchart/classes/view/plot/Plot.php

@@ -0,0 +1,443 @@
+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+	
+	/**
+	 * The plot holds graphical attributes, and is responsible for computing the layout of the graph.
+	 * The layout is quite simple right now, with 4 areas laid out like that:
+	 * (of course this is subject to change in the future).
+	 *
+	 * output area------------------------------------------------|
+	 * |  (outer padding)                                         |
+	 * |  image area--------------------------------------------| |
+	 * |  | (title padding)                                     | |
+	 * |  | title area----------------------------------------| | |
+	 * |  | |-------------------------------------------------| | |
+	 * |  |                                                     | |
+	 * |  | (graph padding)              (caption padding)      | |
+	 * |  | graph area----------------|  caption area---------| | |
+	 * |  | |                         |  |                    | | |
+	 * |  | |                         |  |                    | | |
+	 * |  | |                         |  |                    | | |
+	 * |  | |                         |  |                    | | |
+	 * |  | |                         |  |                    | | |
+	 * |  | |-------------------------|  |--------------------| | |
+	 * |  |                                                     | |
+	 * |  |-----------------------------------------------------| |
+	 * |                                                          |
+	 * |----------------------------------------------------------|
+	 *
+	 * All area dimensions are known in advance , and the optional logo is drawn in absolute coordinates.
+	 *
+	 * @author Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * Created on 27 july 2007
+	 */
+	class Plot {
+		// Style properties
+		protected $title;
+		
+		/**
+		 * Location of the logo. Can be overriden to your personalized logo.
+		 */
+		protected $logoFileName;
+		
+		/**
+		 * Outer area, whose dimension is the same as the PNG returned.
+		 */
+		protected $outputArea;
+		
+		/**
+		 * Outer padding surrounding the whole image, everything outside is blank.
+		 */
+		protected $outerPadding;
+		
+		/**
+		 * Coordinates of the area inside the outer padding.
+		 */
+		protected $imageArea;
+		
+		/**
+		 * Fixed title height in pixels.
+		 */
+		protected $titleHeight;
+		
+		/**
+		 * Padding of the title area.
+		 */
+		protected $titlePadding;
+		
+		/**
+		 *  Coordinates of the title area.
+		 */
+		protected $titleArea;
+		
+		/**
+		 * True if the plot has a caption.
+		 */
+		protected $hasCaption;
+		
+		/**
+		 * Ratio of graph/caption in width.
+		 */
+		protected $graphCaptionRatio;
+		
+		/**
+		 * Padding of the graph area.
+		 */
+		protected $graphPadding;
+		
+		/**
+		 * Coordinates of the graph area.
+		 */
+		protected $graphArea;
+		
+		/**
+		 * Padding of the caption area.
+		 */
+		protected $captionPadding;
+		
+		/**
+		 * Coordinates of the caption area.
+		 */
+		protected $captionArea;
+		
+		/**
+		 * Text writer.
+		 */
+		protected $text;
+		
+		/**
+		 * Color palette.
+		 */
+		protected $palette;
+		
+		/**
+		 * GD image
+		 */
+		protected $img;
+
+		/**
+		 * Drawing primitives
+		 */
+		protected $primitive;
+
+		protected $backGroundColor;
+		protected $textColor;
+
+		/**
+		 * Constructor of Plot.
+		 *
+		 * @param integer width of the image
+		 * @param integer height of the image
+		 */
+		public function Plot($width, $height) {
+			$this->width = $width;
+			$this->height = $height;
+
+			$this->text = new Text();
+			$this->palette = new Palette();
+			
+			// Default layout
+			$this->outputArea = new Rectangle(0, 0, $width - 1, $height - 1);
+			$this->outerPadding = new Padding(5);
+			$this->titleHeight = 26;
+			$this->titlePadding = new Padding(5);
+			$this->hasCaption = false;
+			$this->graphCaptionRatio = 0.50;
+			$this->graphPadding = new Padding(50);
+			$this->captionPadding = new Padding(15);
+		}
+
+		/**
+		 * Compute the area inside the outer padding (outside is white).
+		 */
+		private function computeImageArea() {
+			$this->imageArea = $this->outputArea->getPaddedRectangle($this->outerPadding);
+		}
+		
+		/**
+		 * Compute the title area.
+		 */
+		private function computeTitleArea() {
+			$titleUnpaddedBottom = $this->imageArea->y1 + $this->titleHeight + $this->titlePadding->top + $this->titlePadding->bottom;
+			$titleArea = new Rectangle(
+					$this->imageArea->x1,
+					$this->imageArea->y1,
+					$this->imageArea->x2,
+					$titleUnpaddedBottom - 1
+			);
+			$this->titleArea = $titleArea->getPaddedRectangle($this->titlePadding);
+		}
+		
+		/**
+		 * Compute the graph area.
+		 */
+		private function computeGraphArea() {
+			$titleUnpaddedBottom = $this->imageArea->y1 + $this->titleHeight + $this->titlePadding->top + $this->titlePadding->bottom;
+			$graphArea = null;
+			if ($this->hasCaption) {
+				$graphUnpaddedRight = $this->imageArea->x1 + ($this->imageArea->x2 - $this->imageArea->x1) * $this->graphCaptionRatio
+						+ $this->graphPadding->left + $this->graphPadding->right;
+				$graphArea = new Rectangle(
+						$this->imageArea->x1,
+						$titleUnpaddedBottom,
+						$graphUnpaddedRight - 1,
+						$this->imageArea->y2
+				);
+			} else {
+				$graphArea = new Rectangle(
+						$this->imageArea->x1+70,
+						$titleUnpaddedBottom,
+						$this->imageArea->x2,
+						$this->imageArea->y2
+				);
+			}
+			$this->graphArea = $graphArea->getPaddedRectangle($this->graphPadding);
+		}
+		
+		/**
+		 * Compute the caption area.
+		 */
+		private function computeCaptionArea() {
+			$graphUnpaddedRight = $this->imageArea->x1 + ($this->imageArea->x2 - $this->imageArea->x1) * $this->graphCaptionRatio
+					+ $this->graphPadding->left + $this->graphPadding->right;
+			$titleUnpaddedBottom = $this->imageArea->y1 + $this->titleHeight + $this->titlePadding->top + $this->titlePadding->bottom;
+			$captionArea = new Rectangle(
+					$graphUnpaddedRight,
+					$titleUnpaddedBottom,
+					$this->imageArea->x2,
+					$this->imageArea->y2
+			);
+			$this->captionArea = $captionArea->getPaddedRectangle($this->captionPadding);
+		}
+		
+		/**
+		 * Compute the layout of all areas of the graph.
+		 */
+		public function computeLayout() {
+			$this->computeImageArea();
+			$this->computeTitleArea();
+			$this->computeGraphArea();
+			if ($this->hasCaption) {
+				$this->computeCaptionArea();
+			}
+		}
+		
+		/**
+		 * Creates and initialize the image.
+		 */
+		public function createImage() {
+			$this->img = imagecreatetruecolor($this->width, $this->height);
+			
+			$this->primitive = new Primitive($this->img);
+
+			$this->backGroundColor = new Color(255, 255, 255);
+			$this->textColor = new Color(0, 0, 0);
+
+			// White background
+			imagefilledrectangle($this->img, 0, 0, $this->width - 1, $this->height - 1, $this->backGroundColor->getColor($this->img));
+			
+			//imagerectangle($this->img, $this->imageArea->x1, $this->imageArea->y1, $this->imageArea->x2, $this->imageArea->y2, $this->palette->red->getColor($this->img));
+		}
+
+		/**
+		 * Print the title to the image.
+		 */
+		public function printTitle() {
+			$yCenter = $this->titleArea->y1 + ($this->titleArea->y2 - $this->titleArea->y1) / 2;
+			$this->text->printCentered($this->img, $yCenter, $this->textColor, $this->title, $this->text->fontCondensedBold);
+		}
+
+		/**
+		 * Print the logo image to the image.
+		 */
+		public function printLogo() {
+			@$logoImage = imageCreateFromPNG($this->logoFileName);
+
+			if ($logoImage) {
+				imagecopymerge($this->img, $logoImage, 2 * $this->outerPadding->left, $this->outerPadding->top, 0, 0, imagesx($logoImage), imagesy($logoImage), 100);
+			}
+		}
+
+		/**
+		 * Renders to a file or to standard output.
+		 *
+		 * @param fileName File name (optional)
+		 */
+		public function render($fileName) {
+			if (isset($fileName)) {
+				imagepng($this->img, $fileName);
+			} else {
+				imagepng($this->img);
+			}
+		}
+
+		/**
+		 * Sets the title.
+		 *
+		 * @param string New title
+		 */
+		public function setTitle($title) {
+			$this->title = $title;
+		}
+
+		/**
+		 * Sets the logo image file name.
+		 *
+		 * @param string New logo image file name
+		 */
+		public function setLogoFileName($logoFileName) {
+			$this->logoFileName = $logoFileName;
+		}
+
+		/**
+		 * Return the GD image.
+		 *
+		 * @return GD Image
+		 */
+		public function getImg() {
+			return $this->img;
+		}
+
+		/**
+		 * Return the palette.
+		 *
+		 * @return palette
+		 */
+		public function getPalette() {
+			return $this->palette;
+		}
+
+		/**
+		 * Return the text.
+		 *
+		 * @return text
+		 */
+		public function getText() {
+			return $this->text;
+		}
+
+		/**
+		 * Return the primitive.
+		 *
+		 * @return primitive
+		 */
+		public function getPrimitive() {
+			return $this->primitive;
+		}
+
+		/**
+		 * Return the outer padding.
+		 *
+		 * @param integer Outer padding value in pixels
+		 */
+		public function getOuterPadding() {
+			return $outerPadding;
+		}
+
+		/**
+		 * Set the outer padding.
+		 *
+		 * @param integer Outer padding value in pixels
+		 */
+		public function setOuterPadding($outerPadding) {
+			$this->outerPadding = $outerPadding;
+		}
+
+		/**
+		 * Return the title height.
+		 *
+		 * @param integer title height
+		 */
+		public function setTitleHeight($titleHeight) {
+			$this->titleHeight = $titleHeight;
+		}
+
+		/**
+		 * Return the title padding.
+		 *
+		 * @param integer title padding
+		 */
+		public function setTitlePadding($titlePadding) {
+			$this->titlePadding = $titlePadding;
+		}
+
+		/**
+		 * Return the graph padding.
+		 *
+		 * @param integer graph padding
+		 */
+		public function setGraphPadding($graphPadding) {
+			$this->graphPadding = $graphPadding;
+		}
+
+		/**
+		 * Set if the graph has a caption.
+		 *
+		 * @param boolean graph has a caption
+		 */
+		public function setHasCaption($hasCaption) {
+			$this->hasCaption = $hasCaption;
+		}
+
+		/**
+		 * Set the caption padding.
+		 *
+		 * @param integer caption padding
+		 */
+		public function setCaptionPadding($captionPadding) {
+			$this->captionPadding = $captionPadding;
+		}
+
+		/**
+		 * Set the graph/caption ratio.
+		 *
+		 * @param integer caption padding
+		 */
+		public function setGraphCaptionRatio($graphCaptionRatio) {
+			$this->graphCaptionRatio = $graphCaptionRatio;
+		}
+
+		/**
+		 * Return the graph area.
+		 *
+		 * @return graph area
+		 */
+		public function getGraphArea() {
+			return $this->graphArea;
+		}
+
+		/**
+		 * Return the caption area.
+		 *
+		 * @return caption area
+		 */
+		public function getCaptionArea() {
+			return $this->captionArea;
+		}
+
+		/**
+		 * Return the text color.
+		 *
+		 * @return text color
+		 */
+		public function getTextColor() {
+			return $this->textColor;
+		}
+	}
+?>

webui/system/helper/libchart/classes/view/primitive/Padding.php

@@ -0,0 +1,68 @@
+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+	
+	/**
+	 * Primitive geometric object representing a padding. 
+	 *
+	 * @author Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * @Created on 27 july 2007
+	 */
+	class Padding {
+		/**
+		 * Top padding.
+		 */
+		public $top;
+		
+		/**
+		 * Right padding.
+		 */
+		public $right;
+		
+		/**
+		 * Bottom padding.
+		 */
+		public $bottom;
+	
+		/**
+		 * Left padding.
+		 */
+		public $left;
+
+		/**
+		 * Creates a new padding.
+		 *
+		 * @param integer Top padding
+		 * @param integer Right padding
+		 * @param integer Bottom padding
+		 * @param integer Left padding
+		 */
+		public function Padding($top, $right = null, $bottom = null, $left = null) {
+			$this->top = $top;
+			if ($right == null) {
+				$this->right = $top;
+				$this->bottom = $top;
+				$this->left = $top;
+			} else {
+				$this->right = $right;
+				$this->bottom = $bottom;
+				$this->left = $left;
+			}
+		}
+	}
+?>

webui/system/helper/libchart/classes/view/primitive/Primitive.php

@@ -0,0 +1,70 @@
+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+	
+	/**
+	 * Graphic primitives, extends GD with chart related primitives.
+	 *
+	 * @author Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 */
+	class Primitive {
+		private $img;
+	
+		/**
+		 * Creates a new primitive object
+		 *
+		 * @param	resource	GD image resource
+		 */
+		public function Primitive($img) {
+			$this->img = $img;
+		}
+		
+		/**
+		 * Draws a straight line.
+		 *
+		 * @param integer line start (X)
+		 * @param integer line start (Y)
+		 * @param integer line end (X)
+		 * @param integer line end (Y)
+		 * @param Color line color
+		 */
+		public function line($x1, $y1, $x2, $y2, $color, $width = 1) {
+			imagefilledpolygon($this->img, array($x1, $y1 - $width / 2, $x1, $y1 + $width / 2, $x2, $y2 + $width / 2, $x2, $y2 - $width / 2), 4, $color->getColor($this->img));
+			// imageline($this->img, $x1, $y1, $x2, $y2, $color->getColor($this->img));
+		}
+
+		/**
+		 * Draw a filled gray box with thick borders and darker corners.
+		 *
+		 * @param integer top left coordinate (x)
+		 * @param integer top left coordinate (y)
+		 * @param integer bottom right coordinate (x)
+		 * @param integer bottom right coordinate (y)
+		 * @param Color edge color
+		 * @param Color corner color
+		 */
+		public function outlinedBox($x1, $y1, $x2, $y2, $color0, $color1) {
+			imagefilledrectangle($this->img, $x1, $y1, $x2, $y2, $color0->getColor($this->img));
+			imagerectangle($this->img, $x1, $y1, $x1 + 1, $y1 + 1, $color1->getColor($this->img));
+			imagerectangle($this->img, $x2 - 1, $y1, $x2, $y1 + 1, $color1->getColor($this->img));
+			imagerectangle($this->img, $x1, $y2 - 1, $x1 + 1, $y2, $color1->getColor($this->img));
+			imagerectangle($this->img, $x2 - 1, $y2 - 1, $x2, $y2, $color1->getColor($this->img));
+		}
+
+	}
+?>

webui/system/helper/libchart/classes/view/primitive/Rectangle.php

@@ -0,0 +1,80 @@
+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+	
+	/**
+	 * A rectangle identified by the top-left and the bottom-right corners.
+	 *
+	 * @author Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * @Created on 27 july 2007
+	 */
+	class Rectangle {
+		/**
+		 * Top left X.
+		 */
+		public $x1;
+
+		/**
+		 * Top left Y.
+		 */
+		public $y1;
+		
+		/**
+		 * Bottom right X.
+		 */
+		public $x2;
+		
+		/**
+		 * Bottom right Y.
+		 */
+		public $y2;
+	
+		/**
+		 * Constructor of Rectangle.
+		 *
+		 * @param x1 Left edge coordinate
+		 * @param y1 Upper edge coordinate
+		 * @param x2 Right edge coordinate
+		 * @param y2 Bottom edge coordinate
+		 */
+		public function Rectangle($x1, $y1, $x2, $y2) {
+			$this->x1 = $x1;
+			$this->y1 = $y1;
+			$this->x2 = $x2;
+			$this->y2 = $y2;
+		}
+		
+		/**
+		 * Apply a padding and returns the resulting rectangle.
+		 * The result is an enlarged rectangle.
+		 *
+		 * @return Padded rectangle
+		 */
+		public function getPaddedRectangle($padding) {
+			$rectangle = new Rectangle(
+					$this->x1 + $padding->left,
+					$this->y1 + $padding->top,
+					$this->x2 - $padding->right,
+					$this->y2 - $padding->bottom
+			);
+			
+			//echo "(" . $this->x1 . "," . $this->y1 . ") (" . $this->x2 . "," . $this->y2 . ")<br>";
+			return $rectangle;
+		}
+	}
+?>

webui/system/helper/libchart/classes/view/text/Text.php

@@ -0,0 +1,129 @@
+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2010 Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 * 
+	 * This program is free software: you can redistribute it and/or modify
+	 * it under the terms of the GNU General Public License as published by
+	 * the Free Software Foundation, either version 3 of the License, or
+	 * (at your option) any later version.
+	 * 
+	 * This program 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 General Public License for more details.
+	 *
+	 * You should have received a copy of the GNU General Public License
+	 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+	 * 
+	 */
+	
+	/**
+	 * Text drawing helper
+	 *
+	 * @author Jean-Marc Tr<54>meaux (jm.tremeaux at gmail.com)
+	 */
+	class Text {
+		public $HORIZONTAL_LEFT_ALIGN = 1;
+		public $HORIZONTAL_CENTER_ALIGN = 2;
+		public $HORIZONTAL_RIGHT_ALIGN = 4;
+		public $VERTICAL_TOP_ALIGN = 8;
+		public $VERTICAL_CENTER_ALIGN = 16;
+		public $VERTICAL_BOTTOM_ALIGN = 32;
+
+		/**
+		 * Creates a new text drawing helper.
+		 */
+		public function Text() {
+			$baseDir = dirname(__FILE__) . "/../../../";
+		
+			// Free low-res fonts based on Bitstream Vera <http://dejavu.sourceforge.net/wiki/>
+			$this->fontCondensed = $baseDir . "fonts/DejaVuSansCondensed.ttf";
+			$this->fontCondensedBold = $baseDir . "fonts/DejaVuSansCondensed-Bold.ttf";
+		}
+
+		/**
+		 * Print text.
+		 *
+		 * @param Image GD image
+		 * @param integer text coordinate (x)
+		 * @param integer text coordinate (y)
+		 * @param Color text color
+		 * @param string text value
+		 * @param string font file name
+		 * @param bitfield text alignment
+		 */
+		public function printText($img, $px, $py, $color, $text, $fontFileName, $align = 0) {
+			if (!($align & $this->HORIZONTAL_CENTER_ALIGN) && !($align & $this->HORIZONTAL_RIGHT_ALIGN)) {
+				$align |= $this->HORIZONTAL_LEFT_ALIGN;
+			}
+
+			if (!($align & $this->VERTICAL_CENTER_ALIGN) && !($align & $this->VERTICAL_BOTTOM_ALIGN)) {
+				$align |= $this->VERTICAL_TOP_ALIGN;
+			}
+
+			$fontSize = 8;
+			$lineSpacing = 1;
+
+ 			list ($llx, $lly, $lrx, $lry, $urx, $ury, $ulx, $uly) = imageftbbox($fontSize, 0, $fontFileName, $text, array("linespacing" => $lineSpacing));
+
+			$textWidth = $lrx - $llx;
+			$textHeight = $lry - $ury;
+
+			$angle = 0;
+
+			if ($align & $this->HORIZONTAL_CENTER_ALIGN) {
+				$px -= $textWidth / 2;
+			}
+
+			if ($align & $this->HORIZONTAL_RIGHT_ALIGN) {
+				$px -= $textWidth;
+			}
+
+			if ($align & $this->VERTICAL_CENTER_ALIGN) {
+				$py += $textHeight / 2;
+			}
+
+			if ($align & $this->VERTICAL_TOP_ALIGN) {
+				$py += $textHeight;
+			}
+
+			imagettftext($img, $fontSize, $angle, $px, $py, $color->getColor($img), $fontFileName, $text);
+		}
+		
+		/**
+		 * Print text centered horizontally on the image.
+		 *
+		 * @param Image GD image
+		 * @param integer text coordinate (y)
+		 * @param Color text color
+		 * @param string text value
+		 * @param string font file name
+		 */
+		public function printCentered($img, $py, $color, $text, $fontFileName) {
+			$this->printText($img, imagesx($img) / 2, $py, $color, $text, $fontFileName, $this->HORIZONTAL_CENTER_ALIGN | $this->VERTICAL_CENTER_ALIGN);
+		}
+
+		/**
+		 * Print text in diagonal.
+		 *
+		 * @param Image GD image
+		 * @param integer text coordinate (x)
+		 * @param integer text coordinate (y)
+		 * @param Color text color
+		 * @param string text value
+		 */
+		public function printDiagonal($img, $px, $py, $color, $text) {
+			$fontSize = 8;
+			$fontFileName = $this->fontCondensed;
+
+			$lineSpacing = 1;
+
+ 			list ($lx, $ly, $rx, $ry) = imageftbbox($fontSize, 0, $fontFileName, $text, array("linespacing" => $lineSpacing));
+			$textWidth = $rx - $lx;
+
+			$angle = -45;
+
+			imagettftext($img, $fontSize, $angle, $px, $py, $color->getColor($img), $fontFileName, $text);
+		}
+	}
+?>