WEB-INF/lib/libchart/classes/view/chart/Chart.php

   1 <?php
   2         /* Libchart - PHP chart library
   3          * Copyright (C) 2005-2008 Jean-Marc Trémeaux (jm.tremeaux at gmail.com)
   4          *
   5          * This program is free software: you can redistribute it and/or modify
   6          * it under the terms of the GNU General Public License as published by
   7          * the Free Software Foundation, either version 3 of the License, or
   8          * (at your option) any later version.
   9          *
  10          * This program is distributed in the hope that it will be useful,
  11          * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12          * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13          * GNU General Public License for more details.
  14          *
  15          * You should have received a copy of the GNU General Public License
  16          * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17          *
  18          */
  19
  20         /*! \mainpage Libchart
  21          *
  22          * This is the reference API, automatically compiled by <a href="http://www.stack.nl/~dimitri/doxygen/">Doxygen</a>.
  23          * You can find here information that is not covered by the <a href="../samplecode/">tutorial</a>.
  24          *
  25          */
  26
  27         /**
  28          * Base chart class.
  29          *
  30          * @author Jean-Marc Trémeaux (jm.tremeaux at gmail.com)
  31          */
  32         abstract class Chart {
  33                 /**
  34                  * The data set.
  35                  */
  36                 protected $dataSet;
  37
  38                 /**
  39                  * Plot (holds graphical attributes).
  40                  */
  41                 protected $plot;
  42
  43                 /**
  44                  * Abstract constructor of Chart.
  45                  *
  46                  * @param integer width of the image
  47                  * @param integer height of the image
  48                  */
  49                 protected function Chart($width, $height) {
  50                         // Creates the plot
  51                         $this->plot = new Plot($width, $height);
  52                         $this->plot->setTitle("Untitled chart");
  53                         $this->plot->setLogoFileName(dirname(__FILE__) . "/../../../images/PoweredBy.png");
  54                 }
  55
  56                 /**
  57                  * Checks the data model before rendering the graph.
  58                  */
  59                 protected function checkDataModel() {
  60                         // Check if a dataset was defined
  61                         if (!$this->dataSet) {
  62                                 die("Error: No dataset defined.");
  63                         }
  64
  65                         // Maybe no points are defined, but that's ok. This will yield and empty graph with default boundaries.
  66                 }
  67
  68                 /**
  69                  * Create the image.
  70                  */
  71                 protected function createImage() {
  72                         $this->plot->createImage();
  73                 }
  74
  75                 /**
  76                  * Sets the data set.
  77                  *
  78                  * @param dataSet The data set
  79                  */
  80                 public function setDataSet($dataSet) {
  81                         $this->dataSet = $dataSet;
  82                 }
  83
  84                 /**
  85                  * Return the plot.
  86                  *
  87                  * @return plot
  88                  */
  89                 public function getPlot() {
  90                         return $this->plot;
  91                 }
  92
  93                 /**
  94                  * Sets the title.
  95                  *
  96                  * @param string New title
  97                  */
  98                 public function setTitle($title) {
  99                         $this->plot->setTitle($title);
 100                 }
 101         }
 102 ?>