added the webui to the tarball

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;
+		}
+	}
+?>