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/* Libchart - PHP chart library
* Copyright (C) 2005-2007 Jean-Marc Tr�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�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);
}
}
?> |