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<?php
/** Libchart - PHP chart library
*
* Copyright (C) 2005-2006 Jean-Marc Tr�meaux (jm.tremeaux at gmail.com)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
*/
/*! \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
{
/**
* Creates a new chart
*
* @access protected
* @param integer width of the image
* @param integer height of the image
*/
function chart($width, $height)
{
$this->width = $width;
$this->height = $height;
$this->reset();
}
/**
* Initialize the chart
*
* @access private
*/
function reset()
{
$this->text = new Text();
$this->point = array();
unset($this->lowerBound);
unset($this->upperBound);
$this->setTitle("Untitled chart");
$this->setLogo(dirname(__FILE__) . "/../images/PoweredBy.png");
}
/**
* Add a new sampling point to the chart
*
* @access public
* @param Point sampling point to add
*/
function addPoint($point)
{
array_push($this->point, $point);
}
/**
* Sets the title
*
* @access public
* @param string new title
*/
function setTitle($title)
{
$this->title = $title;
}
/**
* Sets the logo image file name
*
* @access public
* @param string new logo image file name
*/
function setLogo($logoFileName)
{
$this->logoFileName = $logoFileName;
}
/**
* Print the title to the image
*
* @access private
*/
function printTitle()
{
$this->text->printCentered($this->img, ($this->labelMarginTop + $this->margin) / 2, $this->textColor, $this->title, $this->text->fontCondensedBold);
}
/**
* Print the logo image to the image
*
* @access private
*/
function printLogo()
{
@$logoImage = imageCreateFromPNG($this->logoFileName);
if($logoImage)
imagecopymerge($this->img, $logoImage, 2*$this->margin, $this->margin, 0, 0, imagesx($logoImage), imagesy($logoImage), 100);
}
/**
* Set the outer margin
*
* @access public
* @param integer outer margin value in pixels
*/
function setMargin($margin)
{
$this->margin = $margin;
}
/**
* Set the label left margin
*
* @access public
* @param integer label left margin value in pixels
*/
function setLabelMarginLeft($labelMarginLeft)
{
$this->labelMarginLeft = $labelMarginLeft;
}
/**
* Set the label right margin
*
* @access public
* @param integer label right margin value in pixels
*/
function setLabelMarginRight($labelMarginRight)
{
$this->labelMarginRight = $labelMarginRight;
}
/**
* Set the label top margin
*
* @access public
* @param integer label top margin value in pixels
*/
function setLabelMarginTop($labelMarginTop)
{
$this->labelMarginTop = $labelMarginTop;
}
/**
* Set the label bottom margin
*
* @access public
* @param integer label bottom margin value in pixels
*/
function setLabelMarginBottom($labelMarginBottom)
{
$this->labelMarginBottom = $labelMarginBottom;
}
/**
* Creates and initialize the image
*
* @access protected
*/
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));
}
}
?>
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