This repository has been archived on 2024-04-08. You can view files and clone it, but cannot push or open issues or pull requests.
khosb/includes/pear/Image/Graph/Plot/Area.php

188 lines
6.7 KiB
PHP
Raw Normal View History

<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Image_Graph - PEAR PHP OO Graph Rendering Utility.
*
* PHP versions 4 and 5
*
* LICENSE: 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., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*
* @category Images
* @package Image_Graph
* @subpackage Plot
* @author Jesper Veggerby <pear.nosey@veggerby.dk>
* @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen
* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
* @version CVS: $Id: Area.php,v 1.12 2005/08/08 19:09:18 nosey Exp $
* @link http://pear.php.net/package/Image_Graph
*/
/**
* Include file Image/Graph/Plot.php
*/
require_once 'Image/Graph/Plot.php';
/**
* Area Chart plot.
*
* An area chart plots all data points similar to a {@link
* Image_Graph_Plot_Line}, but the area beneath the line is filled and the whole
* area 'the-line', 'the right edge', 'the x-axis' and 'the left edge' is
* bounded. Smoothed charts are only supported with non-stacked types
*
* @category Images
* @package Image_Graph
* @subpackage Plot
* @author Jesper Veggerby <pear.nosey@veggerby.dk>
* @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen
* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
* @version Release: @package_version@
* @link http://pear.php.net/package/Image_Graph
*/
class Image_Graph_Plot_Area extends Image_Graph_Plot
{
/**
* Perform the actual drawing on the legend.
*
* @param int $x0 The top-left x-coordinate
* @param int $y0 The top-left y-coordinate
* @param int $x1 The bottom-right x-coordinate
* @param int $y1 The bottom-right y-coordinate
* @access private
*/
function _drawLegendSample($x0, $y0, $x1, $y1)
{
$dx = abs($x1 - $x0) / 3;
$dy = abs($y1 - $y0) / 3;
$this->_canvas->addVertex(array('x' => $x0, 'y' => $y1));
$this->_canvas->addVertex(array('x' => $x0, 'y' => $y0 + $dy));
$this->_canvas->addVertex(array('x' => $x0 + $dx, 'y' => $y0));
$this->_canvas->addVertex(array('x' => $x0 + 2*$dx, 'y' => $y0 + 2*$dy));
$this->_canvas->addVertex(array('x' => $x1, 'y' => $y0 + $dy));
$this->_canvas->addVertex(array('x' => $x1, 'y' => $y1));
$this->_canvas->polygon(array('connect' => true));
}
/**
* Output the plot
*
* @return bool Was the output 'good' (true) or 'bad' (false).
* @access private
*/
function _done()
{
if (parent::_done() === false) {
return false;
}
$this->_canvas->startGroup(get_class($this) . '_' . $this->_title);
$base = array();
if ($this->_multiType == 'stacked') {
reset($this->_dataset);
$key = key($this->_dataset);
$dataset =& $this->_dataset[$key];
$first = $dataset->first();
$point = array ('X' => $first['X'], 'Y' => '#min_pos#');
$base[] = array();
$base[] = $this->_pointY($point);
$first = $this->_pointX($point);
$base[] = $first;
$last = $dataset->last();
$point = array ('X' => $last['X'], 'Y' => '#min_pos#');
$base[] = array();
$base[] = $this->_pointY($point);
$base[] = $this->_pointX($point);
$current = array();
}
$minYaxis = $this->_parent->_getMinimum($this->_axisY);
$maxYaxis = $this->_parent->_getMaximum($this->_axisY);
$keys = array_keys($this->_dataset);
foreach ($keys as $key) {
$dataset =& $this->_dataset[$key];
$dataset->_reset();
if ($this->_multiType == 'stacked') {
$plotarea = array_reverse($base);
$base = array();
while ($point = $dataset->_next()) {
$x = $point['X'];
$p = $point;
if (isset($current[$x])) {
$p['Y'] += $current[$x];
} else {
$current[$x] = 0;
}
$x1 = $this->_pointX($p);
$y1 = $this->_pointY($p);
$plotarea[] = $x1;
$plotarea[] = $y1;
$plotarea[] = $point;
$base[] = array();
$base[] = $y1;
$base[] = $x1;
$current[$x] += $point['Y'];
}
} else {
$first = true;
$plotarea = array();
while ($point = $dataset->_next()) {
if ($first) {
$firstPoint = array ('X' => $point['X'], 'Y' => '#min_pos#');
$plotarea[] = $this->_pointX($firstPoint);
$plotarea[] = $this->_pointY($firstPoint);
$plotarea[] = array();
}
$plotarea[] = $this->_pointX($point);
$plotarea[] = $this->_pointY($point);
$plotarea[] = $point;
$lastPoint = $point;
$first = false;
}
$endPoint['X'] = $lastPoint['X'];
$endPoint['Y'] = '#min_pos#';
$plotarea[] = $this->_pointX($endPoint);
$plotarea[] = $this->_pointY($endPoint);
$plotarea[] = array();
}
reset($plotarea);
while (list(, $x) = each($plotarea)) {
list(, $y) = each($plotarea);
list(, $data) = each($plotarea);
$this->_canvas->addVertex(
$this->_mergeData(
$data,
array('x' => $x, 'y' => $y)
)
);
}
$this->_getFillStyle($key);
$this->_getLineStyle($key);
$this->_canvas->polygon(array('connect' => true, 'map_vertices' => true));
}
unset($keys);
$this->_drawMarker();
$this->_canvas->endGroup();
return true;
}
}
?>