318 lines
7.9 KiB
PHP
318 lines
7.9 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: Area.php,v 1.13 2005/11/27 22:21:17 nosey Exp $
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* @link http://pear.php.net/package/Image_Graph
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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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* Bubble Chart plot.
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*
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* An area chart plots all data points similar to a {@link
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* Image_Graph_Plot_Line}, but the area beneath the line is filled and the whole
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* area 'the-line', 'the right edge', 'the x-axis' and 'the left edge' is
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* bounded. Smoothed charts are only supported with non-stacked types
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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 Eric Ross <eric.ross.c@gmail.com>
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* @copyright Copyright (C) 2007 Eric Ross
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* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
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* @version Release: 0.7.2
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* @link http://pear.php.net/package/Image_Graph
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*/
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class Image_Graph_Plot_Bubble extends Image_Graph_Plot
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{
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var $_only_minmax = true;
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function Image_Graph_Plot_Bubble(&$dataset, $only_minmax = false)
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{
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$this->_only_minmax = $only_minmax;
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parent::Image_Graph_Plot($dataset);
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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, $y1)
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{
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if ($this->_only_minmax)
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return;
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$x = ($x0 + $x1) / 2;
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$y = ($y0 + $y1) / 2;
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$rx = abs($x0 - $x1) / 2.0;
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$ry = abs($y0 - $y1) / 2.0;
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$fill = $this->_fillStyle->_getFillStyle(-1);
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$this->_canvas->ellipse(array(
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'x' => $x,
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'y' => $y,
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'rx' => $rx,
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'ry' => $ry,
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'fill' => $fill,
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'line' => 'black'
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)
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);
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}
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/**
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* Output the plot
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*
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* @return bool Was the output 'good' (true) or 'bad' (false).
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* @access private
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*/
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function _done()
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{
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if (parent::_done() === false) {
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return false;
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}
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if ($this->_only_minmax)
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return $this->_drawMinMax();
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$this->_canvas->startGroup(get_class($this) . '_' . $this->_title);
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$this->_clip(true);
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$index = 0;
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$canvas_width = $this->_canvas->getWidth();
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$graph_width = $this->_right - $this->_left;
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$graph_height = $this->_bottom - $this->_top;
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$num_datasets = count($this->_dataset);
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$y_step = $graph_height / ($num_datasets + 1);
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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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$dataset->_reset();
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$fill = $this->_fillStyle->_getFillStyle(-1);
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while ($point = $dataset->_next()) {
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//$pivot = $point['X'];
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$y = $point['Y'];
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$size = $point['data']['size'];
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$x = $point['data']['x'];
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// x is the % from the left border (0% = full left; 100% = full right)
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$x = $this->_left + $x * $graph_width / 100.0;
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// y is the number of steps (the number of the dataset) zero based
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$y = $this->_bottom - ($y + 1) * $y_step;
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$this->_canvas->ellipse(array(
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'x' => $x,
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'y' => $y,
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'rx' => $size,
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'ry' => $size,
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'fill' => $fill,
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'line' => 'black'
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)
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);
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/*
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if (isset($this->_callback)) {
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call_user_func($this->_callback, array( 'event' => 'bubble',
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'x' => $x,
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'y' => $y,
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'rx' => $size,
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'ry' => $size,
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'value' => $point['data']['value']
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)
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);
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}
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*/
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}
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$index++;
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}
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unset($keys);
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$this->_drawMarker();
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$this->_clip(false);
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$this->_canvas->endGroup();
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return true;
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}
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function getTextWidth($str)
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{
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return $this->_canvas->textWidth($str);
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}
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function _drawMinMax()
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{
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$this->_canvas->startGroup(get_class($this) . '_' . $this->_title);
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$this->_clip(true);
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$index = 0;
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$canvas_width = $this->_canvas->getWidth();
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$graph_width = $this->_right - $this->_left;
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$graph_height = $this->_bottom - $this->_top;
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$num_datasets = count($this->_dataset);
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$y_step = $graph_height / ($num_datasets + 1);
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$keys = array_keys($this->_dataset);
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$max_value = -1;
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$max_size = -1;
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$min_value = 999999;
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$min_size = 100;
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$avg_value = 0;
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$avg_size = 1;
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$count = 0;
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foreach ($keys as $key) {
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$dataset =& $this->_dataset[$key];
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$dataset->_reset();
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while ($point = $dataset->_next()) {
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//$pivot = $point['X'];
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//$y = $point['Y'];
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$value = $point['data']['value'];
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$size = $point['data']['size'];
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//$x = $point['data']['x'];
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if ($value > $max_value) {
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$max_value = $value;
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$max_size = $size;
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}
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if ($value < $min_value) {
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$min_value = $value;
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$min_size = $size;
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}
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$avg_value += $value;
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$avg_size += $size;
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$count++;
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}
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}
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$avg_value /= $count == 0 ? 1 : $count;
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$avg_size /= $count == 0 ? 1 : $count;
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unset($keys);
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$xs = array(0, 0, 0);
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$y = 0;
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$fills = array("gray", "gray", "gray");
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$sizes = array($min_size, $avg_size, $max_size);
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$values = array($min_value, $avg_value, $max_value);
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$titles = array("Min", "Prom", "Max");
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for($i=0;$i<3;$i++) {
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$x = $this->_left + $xs[$i];
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$this->_canvas->setFont($this->_getFont());
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$this->_canvas->addText(array(
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"x" => $x,
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"y" => $this->_top + $y,
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"text" => $titles[$i],
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"color" => "black",
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)
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);
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$textHeight = $this->_canvas->textWidth($titles[$i]);
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$x += $textHeight + $sizes[$i] + 6;
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$ye = $y + $this->_canvas->textHeight($titles[$i]) / 2.0;
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$this->_canvas->ellipse(array(
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'x' => $x,
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'y' => $this->_top + $ye,
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'rx' => $sizes[$i],
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'ry' => $sizes[$i],
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'fill' => $fills[$i],
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'line' => 'black'
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)
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);
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$x += $sizes[$i] + 6;
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$this->_canvas->setFont($this->_getFont());
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$txt = "" . round($values[$i]);
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$this->_canvas->addText(array(
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"x" => $x,
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"y" => $this->_top + $y,
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"text" => $txt,
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"color" => "black",
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)
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);
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$yOld = $y;
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$y += $textHeight / 2.0;
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$y += $sizes[$i];
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$y += ($i < 2 ? $sizes[$i + 1] : 0);
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$y -= ($i < 2 ? $this->_canvas->textHeight($titles[$i+1]) : 0);
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if ($y < $yOld + $textHeight)
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$y = $yOld + $textHeight;
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}
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$this->_drawMarker();
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$this->_clip(false);
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$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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