247 lines
7.4 KiB
PHP
247 lines
7.4 KiB
PHP
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<?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: CandleStick.php,v 1.11 2005/08/30 21:25:24 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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* Candlestick 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_CandleStick extends Image_Graph_Plot
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{
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/**
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* (Add basic description here)
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*
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* @access private
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*/
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function _drawCandleStickH($y, $h, $x_min, $x_open, $x_close, $x_max, $ID)
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{
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$this->_getLineStyle($ID);
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$this->_canvas->line(
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array(
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'x0' => min($x_open, $x_close),
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'y0' => $y,
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'x1' => $x_min,
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'y1' => $y
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)
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);
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$this->_getLineStyle($ID);
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$this->_canvas->line(
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array(
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'x0' => max($x_open, $x_close),
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'y0' => $y,
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'x1' => $x_max,
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'y1' => $y
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)
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);
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$this->_getLineStyle($ID);
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$this->_getFillStyle($ID);
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$this->_canvas->rectangle(
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array(
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'x0' => min($x_open, $x_close),
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'y0' => $y - $h,
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'x1' => max($x_open, $x_close),
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'y1' => $y + $h
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)
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);
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}
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/**
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* (Add basic description here)
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*
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* @access private
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*/
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function _drawCandleStickV($x, $w, $y_min, $y_open, $y_close, $y_max, $ID)
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{
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$this->_getLineStyle($ID);
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$this->_canvas->line(
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array(
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'x0' => $x,
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'y0' => min($y_open, $y_close),
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'x1' => $x,
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'y1' => $y_max
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)
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);
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$this->_getLineStyle($ID);
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$this->_canvas->line(
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array(
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'x0' => $x,
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'y0' => max($y_open, $y_close),
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'x1' => $x,
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'y1' => $y_min
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)
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);
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$this->_getLineStyle($ID);
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$this->_getFillStyle($ID);
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$this->_canvas->rectangle(
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array(
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'x0' => $x - $w,
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'y0' => min($y_open, $y_close),
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'x1' => $x + $w,
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'y1' => max($y_open, $y_close)
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)
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);
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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, $y1)
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{
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$x = round(($x0 + $x1) / 2);
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$h = abs($y1 - $y0) / 4;
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$w = round(abs($x1 - $x0) / 5);
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$this->_drawCandleStickV($x, $w, $y1, $y1 - $h, $y0 + $h, $y0, 'green');
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}
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/**
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* Output the plot
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*
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* @return bool Was the output 'good' (true) or 'bad' (false).
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* @access private
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*/
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function _done()
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{
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if (parent::_done() === false) {
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return false;
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}
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if (!is_array($this->_dataset)) {
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return false;
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}
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$this->_canvas->startGroup(get_class($this) . '_' . $this->_title);
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if ($this->_multiType == 'stacked100pct') {
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$total = $this->_getTotals();
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}
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$current = array();
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$number = 0;
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$width = floor(0.8 * $this->_parent->_labelDistance(IMAGE_GRAPH_AXIS_X) / 2);
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$lastClosed = false;
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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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$dataset->_reset();
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while ($data = $dataset->_next()) {
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if ($this->_parent->_horizontal) {
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$point['X'] = $data['X'];
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//$y = $data['Y'];
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if (isset($data['Y']['open'])) {
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$point['Y'] = $data['Y']['open'];
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} else {
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$point['Y'] = $lastClosed;
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}
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$y = $this->_pointY($point);
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$x_open = $this->_pointX($point);
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$lastClosed = $point['Y'] = $data['Y']['close'];
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$x_close = $this->_pointX($point);
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$point['Y'] = $data['Y']['min'];
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$x_min = $this->_pointX($point);
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$point['Y'] = $data['Y']['max'];
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$x_max = $this->_pointX($point);
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if ($data['Y']['close'] < $data['Y']['open']) {
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$ID = 'red';
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} else {
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$ID = 'green';
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}
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$this->_drawCandleStickH($y, $width, $x_min, $x_open, $x_close, $x_max, $ID);
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}
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else {
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$point['X'] = $data['X'];
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//$y = $data['Y'];
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if (isset($data['Y']['open'])) {
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$point['Y'] = $data['Y']['open'];
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} else {
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$point['Y'] = $lastClosed;
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}
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$x = $this->_pointX($point);
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$y_open = $this->_pointY($point);
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$lastClosed = $point['Y'] = $data['Y']['close'];
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$y_close = $this->_pointY($point);
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$point['Y'] = $data['Y']['min'];
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$y_min = $this->_pointY($point);
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$point['Y'] = $data['Y']['max'];
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$y_max = $this->_pointY($point);
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if ($data['Y']['close'] < $data['Y']['open']) {
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$ID = 'red';
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} else {
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$ID = 'green';
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}
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$this->_drawCandleStickV($x, $width, $y_min, $y_open, $y_close, $y_max, $ID);
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}
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}
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}
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unset($keys);
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$this->_drawMarker();
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$this->_canvas->endGroup($this->_title);
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return true;
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}
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}
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?>
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