198 lines
7.2 KiB
PHP
198 lines
7.2 KiB
PHP
<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
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/**
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* Image_Graph - PEAR PHP OO Graph Rendering Utility.
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*
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* PHP versions 4 and 5
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*
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* LICENSE: This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation; either version 2.1 of the License, or (at your
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* option) any later version. This library is distributed in the hope that it
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* will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
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* General Public License for more details. You should have received a copy of
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* the GNU Lesser General Public License along with this library; if not, write
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* to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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* 02111-1307 USA
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*
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* @category Images
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* @package Image_Graph
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* @subpackage Plot
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* @author Jesper Veggerby <pear.nosey@veggerby.dk>
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* @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen
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* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
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* @version CVS: $Id: Band.php,v 1.11 2005/08/23 21:01:46 nosey Exp $
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* @link http://pear.php.net/package/Image_Graph
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* @since File available since Release 0.3.0dev2
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*/
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/**
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* Include file Image/Graph/Plot.php
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*/
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require_once 'Image/Graph/Plot.php';
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/**
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* "Band" (area chart with min AND max) chart.
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*
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* @category Images
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* @package Image_Graph
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* @subpackage Plot
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* @author Jesper Veggerby <pear.nosey@veggerby.dk>
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* @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen
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* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
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* @version Release: @package_version@
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* @link http://pear.php.net/package/Image_Graph
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* @since Class available since Release 0.3.0dev2
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*/
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class Image_Graph_Plot_Band extends Image_Graph_Plot
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{
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/**
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* Perform the actual drawing on the legend.
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*
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* @param int $x0 The top-left x-coordinate
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* @param int $y0 The top-left y-coordinate
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* @param int $x1 The bottom-right x-coordinate
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* @param int $y1 The bottom-right y-coordinate
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* @access private
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*/
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function _drawLegendSample($x0, $y0, $x1, $y1)
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{
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$h = abs($y1 - $y0) / 6;
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$w = round(abs($x1 - $x0) / 5);
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$y = ($y0 + $y1) / 2;
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$this->_canvas->addVertex(array('x' => $x0, 'y' => $y - $h * 3));
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$this->_canvas->addVertex(array('x' => $x0 + $w, 'y' => $y - 4 * $h));
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$this->_canvas->addVertex(array('x' => $x0 + 2 * $w, 'y' => $y - $h * 2));
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$this->_canvas->addVertex(array('x' => $x0 + 3 * $w, 'y' => $y - $h * 4));
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$this->_canvas->addVertex(array('x' => $x0 + 4 * $w, 'y' => $y - $h * 3));
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$this->_canvas->addVertex(array('x' => $x1, 'y' => $y - $h * 2));
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$this->_canvas->addVertex(array('x' => $x1, 'y' => $y + $h * 3));
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$this->_canvas->addVertex(array('x' => $x0 + 4 * $w, 'y' => $y + $h));
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$this->_canvas->addVertex(array('x' => $x0 + 3 * $w, 'y' => $y + 2 * $h));
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$this->_canvas->addVertex(array('x' => $x0 + 2 * $w, 'y' => $y + 1 * $h));
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$this->_canvas->addVertex(array('x' => $x0 + 1 * $w, 'y' => $y));
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$this->_canvas->addVertex(array('x' => $x0, 'y' => $y + $h));
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$this->_getLineStyle();
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$this->_getFillStyle();
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$this->_canvas->polygon(array('connect' => true));
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}
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/**
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* Output the plot
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*
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* @return bool Was the output 'good' (true) or 'bad' (false).
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* @access private
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*/
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function _done()
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{
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if (parent::_done() === false) {
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return false;
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}
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if (!is_array($this->_dataset)) {
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return false;
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}
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$current = array();
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$this->_canvas->startGroup(get_class($this) . '_' . $this->_title);
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$keys = array_keys($this->_dataset);
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foreach ($keys as $key) {
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$dataset =& $this->_dataset[$key];
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$dataset->_reset();
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$upperBand = array();
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$lowerBand = array();
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while ($data = $dataset->_next()) {
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if ($this->_parent->_horizontal) {
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$point['X'] = $data['X'];
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$point['Y'] = $data['Y']['high'];
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$y = $this->_pointY($point);
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$x_high = $this->_pointX($point);
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$point['Y'] = $data['Y']['low'];
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$x_low = $this->_pointX($point);
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$data = array('X' => $x_high, 'Y' => $y);
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if (isset($point['data'])) {
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$data['data'] = $point['data'];
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} else {
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$data['data'] = array();
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}
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$upperBand[] = $data;
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$data = array('X' => $x_low, 'Y' => $y);
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if (isset($point['data'])) {
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$data['data'] = $point['data'];
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} else {
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$data['data'] = array();
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}
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$lowerBand[] = $data;
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}
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else {
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$point['X'] = $data['X'];
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$y = $data['Y'];
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$point['Y'] = $data['Y']['high'];
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$x = $this->_pointX($point);
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$y_high = $this->_pointY($point);
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$point['Y'] = $data['Y']['low'];
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$y_low = $this->_pointY($point);
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$data = array('X' => $x, 'Y' => $y_high);
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if (isset($point['data'])) {
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$data['data'] = $point['data'];
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} else {
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$data['data'] = array();
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}
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$upperBand[] = $data;
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$data = array('X' => $x, 'Y' => $y_low);
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if (isset($point['data'])) {
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$data['data'] = $point['data'];
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} else {
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$data['data'] = array();
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}
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$lowerBand[] = $data;
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}
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}
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$lowerBand = array_reverse($lowerBand);
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foreach ($lowerBand as $point) {
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$this->_canvas->addVertex(
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$this->_mergeData(
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$point['data'],
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array('x' => $point['X'], 'y' => $point['Y'])
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)
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);
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}
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foreach ($upperBand as $point) {
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$this->_canvas->addVertex(
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$this->_mergeData(
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$point['data'],
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array('x' => $point['X'], 'y' => $point['Y'])
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)
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);
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}
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unset($upperBand);
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unset($lowerBand);
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$this->_getLineStyle($key);
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$this->_getFillStyle($key);
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$this->_canvas->polygon(array('connect' => true, 'map_vertices' => true));
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}
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unset($keys);
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$this->_drawMarker();
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$this->_canvas->endGroup();
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return true;
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}
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}
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?>
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