X-Git-Url: http://wagnertech.de/gitweb/gitweb.cgi/timetracker.git/blobdiff_plain/098a79f0819ebb89b7d48df4a6b154af4560f68e..9a23a8c0a51b7ec38a96f525484134f3cb85dc7e:/WEB-INF/lib/libchart/classes/view/chart/LineChart.php

diff --git a/WEB-INF/lib/libchart/classes/view/chart/LineChart.php b/WEB-INF/lib/libchart/classes/view/chart/LineChart.php
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+<?php
+	/* Libchart - PHP chart library
+	 * Copyright (C) 2005-2008 Jean-Marc Trémeaux (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 Trémeaux (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);
+		}
+	}
+?>
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