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PHP Script  |  2008-07-02  |  7.4 KB  |  205 lines
  1. <?php
  2.  
  3. /* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
  4.  
  5. /**
  6.  * Image_Graph - PEAR PHP OO Graph Rendering Utility.
  7.  *
  8.  * PHP versions 4 and 5
  9.  *
  10.  * LICENSE: This library is free software; you can redistribute it and/or modify
  11.  * it under the terms of the GNU Lesser General Public License as published by
  12.  * the Free Software Foundation; either version 2.1 of the License, or (at your
  13.  * option) any later version. This library is distributed in the hope that it
  14.  * will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  15.  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
  16.  * General Public License for more details. You should have received a copy of
  17.  * the GNU Lesser General Public License along with this library; if not, write
  18.  * to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19.  * 02111-1307 USA
  20.  *
  21.  * @category   Images
  22.  * @package    Image_Graph
  23.  * @subpackage Plot
  24.  * @author     Jesper Veggerby <pear.nosey@veggerby.dk>
  25.  * @copyright  Copyright (C) 2003, 2004 Jesper Veggerby Hansen
  26.  * @license    http://www.gnu.org/copyleft/lesser.html  LGPL License 2.1
  27.  * @version    CVS: $Id: Band.php,v 1.12 2005/11/27 22:21:16 nosey Exp $
  28.  * @link       http://pear.php.net/package/Image_Graph
  29.  * @since      File available since Release 0.3.0dev2
  30.  */
  31.  
  32. /**
  33.  * Include file Image/Graph/Plot.php
  34.  */
  35. require_once 'Image/Graph/Plot.php';
  36.  
  37. /**
  38.  * "Band" (area chart with min AND max) chart.
  39.  *
  40.  * @category   Images
  41.  * @package    Image_Graph
  42.  * @subpackage Plot
  43.  * @author     Jesper Veggerby <pear.nosey@veggerby.dk>
  44.  * @copyright  Copyright (C) 2003, 2004 Jesper Veggerby Hansen
  45.  * @license    http://www.gnu.org/copyleft/lesser.html  LGPL License 2.1
  46.  * @version    Release: 0.7.2
  47.  * @link       http://pear.php.net/package/Image_Graph
  48.  * @since      Class available since Release 0.3.0dev2
  49.  */
  50. class Image_Graph_Plot_Band extends Image_Graph_Plot
  51. {
  52.  
  53.     /**
  54.      * Perform the actual drawing on the legend.
  55.      *
  56.      * @param int $x0 The top-left x-coordinate
  57.      * @param int $y0 The top-left y-coordinate
  58.      * @param int $x1 The bottom-right x-coordinate
  59.      * @param int $y1 The bottom-right y-coordinate
  60.      * @access private
  61.      */
  62.     function _drawLegendSample($x0, $y0, $x1, $y1)
  63.     {
  64.         $h = abs($y1 - $y0) / 6;
  65.         $w = round(abs($x1 - $x0) / 5);
  66.         $y = ($y0 + $y1) / 2;
  67.  
  68.         $this->_canvas->addVertex(array('x' => $x0, 'y' => $y - $h * 3));
  69.         $this->_canvas->addVertex(array('x' => $x0 + $w, 'y' => $y - 4 * $h));
  70.         $this->_canvas->addVertex(array('x' => $x0 + 2 * $w, 'y' => $y - $h * 2));
  71.         $this->_canvas->addVertex(array('x' => $x0 + 3 * $w, 'y' => $y - $h * 4));
  72.         $this->_canvas->addVertex(array('x' => $x0 + 4 * $w, 'y' => $y - $h * 3));
  73.         $this->_canvas->addVertex(array('x' => $x1, 'y' => $y - $h * 2));
  74.         $this->_canvas->addVertex(array('x' => $x1, 'y' => $y + $h * 3));
  75.         $this->_canvas->addVertex(array('x' => $x0 + 4 * $w, 'y' => $y + $h));
  76.         $this->_canvas->addVertex(array('x' => $x0 + 3 * $w, 'y' => $y + 2 * $h));
  77.         $this->_canvas->addVertex(array('x' => $x0 + 2 * $w, 'y' => $y + 1 * $h));
  78.         $this->_canvas->addVertex(array('x' => $x0 + 1 * $w, 'y' => $y));
  79.         $this->_canvas->addVertex(array('x' => $x0, 'y' => $y + $h));
  80.  
  81.         $this->_getLineStyle();
  82.         $this->_getFillStyle();
  83.         $this->_canvas->polygon(array('connect' => true));
  84.     }
  85.  
  86.     /**
  87.      * Output the plot
  88.      *
  89.      * @return bool Was the output 'good' (true) or 'bad' (false).
  90.      * @access private
  91.      */
  92.     function _done()
  93.     {
  94.         if (parent::_done() === false) {
  95.             return false;
  96.         }
  97.  
  98.         if (!is_array($this->_dataset)) {
  99.             return false;
  100.         }
  101.  
  102.         $current = array();
  103.  
  104.         $this->_canvas->startGroup(get_class($this) . '_' . $this->_title);
  105.  
  106.         $this->_clip(true);        
  107.  
  108.  
  109.         $keys = array_keys($this->_dataset);
  110.         foreach ($keys as $key) {
  111.             $dataset =& $this->_dataset[$key];
  112.             $dataset->_reset();
  113.             $upperBand = array();
  114.             $lowerBand = array();
  115.             while ($data = $dataset->_next()) {
  116.                 if ($this->_parent->_horizontal) {
  117.                     $point['X'] = $data['X'];
  118.     
  119.                     $point['Y'] = $data['Y']['high'];
  120.                     $y = $this->_pointY($point);
  121.                     $x_high = $this->_pointX($point);
  122.     
  123.                     $point['Y'] = $data['Y']['low'];
  124.                     $x_low = $this->_pointX($point);
  125.        
  126.                     $data = array('X' => $x_high, 'Y' => $y);
  127.                     if (isset($point['data'])) {
  128.                         $data['data'] = $point['data'];
  129.                     } else {
  130.                         $data['data'] = array();
  131.                     }             
  132.                     $upperBand[] = $data;
  133.                     
  134.                     $data = array('X' => $x_low, 'Y' => $y);
  135.                     if (isset($point['data'])) {
  136.                         $data['data'] = $point['data'];
  137.                     } else {
  138.                         $data['data'] = array();
  139.                     }              
  140.                     $lowerBand[] = $data;
  141.                 }
  142.                 else {
  143.                     $point['X'] = $data['X'];
  144.                     $y = $data['Y'];
  145.     
  146.                     $point['Y'] = $data['Y']['high'];
  147.                     $x = $this->_pointX($point);
  148.                     $y_high = $this->_pointY($point);
  149.     
  150.                     $point['Y'] = $data['Y']['low'];
  151.                     $y_low = $this->_pointY($point);
  152.        
  153.                     $data = array('X' => $x, 'Y' => $y_high);
  154.                     if (isset($point['data'])) {
  155.                         $data['data'] = $point['data'];
  156.                     } else {
  157.                         $data['data'] = array();
  158.                     }             
  159.                     $upperBand[] = $data;
  160.                     
  161.                     $data = array('X' => $x, 'Y' => $y_low);
  162.                     if (isset($point['data'])) {
  163.                         $data['data'] = $point['data'];
  164.                     } else {
  165.                         $data['data'] = array();
  166.                     }              
  167.                     $lowerBand[] = $data;
  168.                 }
  169.             }
  170.             $lowerBand = array_reverse($lowerBand);
  171.             foreach ($lowerBand as $point) {
  172.                 $this->_canvas->addVertex(
  173.                     $this->_mergeData(
  174.                         $point['data'],
  175.                         array('x' => $point['X'], 'y' => $point['Y'])
  176.                     )
  177.                 );
  178.             }
  179.             foreach ($upperBand as $point) {
  180.                 $this->_canvas->addVertex(                
  181.                     $this->_mergeData(
  182.                         $point['data'],
  183.                         array('x' => $point['X'], 'y' => $point['Y'])
  184.                     )
  185.                 );
  186.             }
  187.             unset($upperBand);
  188.             unset($lowerBand);
  189.  
  190.             $this->_getLineStyle($key);
  191.             $this->_getFillStyle($key);
  192.             $this->_canvas->polygon(array('connect' => true, 'map_vertices' => true));
  193.         }
  194.         unset($keys);
  195.         $this->_drawMarker();
  196.         $this->_clip(false);        
  197.  
  198.         $this->_canvas->endGroup();
  199.  
  200.         return true;
  201.     }
  202.  
  203. }
  204.  
  205. ?>