140 lines
4.2 KiB
PHP
140 lines
4.2 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 Marker
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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: Pointing.php,v 1.8 2005/08/24 20:35:54 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/Marker.php
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*/
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require_once 'Image/Graph/Marker.php';
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/**
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* Data marker as a 'pointing marker'.
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*
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* Points to the data using another marker (as start and/or end)
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*
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* @category Images
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* @package Image_Graph
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* @subpackage Marker
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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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*/
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class Image_Graph_Marker_Pointing extends Image_Graph_Marker
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{
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/**
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* The starting marker
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* @var Marker
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* @access private
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*/
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var $_markerStart;
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/**
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* The ending marker
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* @var Marker
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* @access private
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*/
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var $_markerEnd;
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/**
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* The X offset from the 'data'
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* @var int
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* @access private
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*/
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var $_deltaX = -1;
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/**
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* The Y offset from the 'data'
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* @var int
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* @access private
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*/
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var $_deltaY = -1;
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/**
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* Create an pointing marker, ie a pin on a board
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*
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* @param int $deltaX The the X offset from the real 'data' point
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* @param int $deltaY The the Y offset from the real 'data' point
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* @param Marker $markerEnd The ending marker that represents 'the head of
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* the pin'
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*/
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function Image_Graph_Marker_Pointing($deltaX, $deltaY, & $markerEnd)
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{
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parent::Image_Graph_Marker();
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$this->_deltaX = $deltaX;
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$this->_deltaY = $deltaY;
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$this->_markerStart = null;
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$this->_markerEnd =& $markerEnd;
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}
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/**
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* Sets the starting marker, ie the tip of the pin on a board
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*
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* @param Marker $markerStart The starting marker that represents 'the tip
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* of the pin'
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*/
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function setMarkerStart(& $markerStart)
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{
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$this->_markerStart =& $markerStart;
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$this->_markerStart->_setParent($this);
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}
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/**
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* Draw the marker on the canvas
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*
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* @param int $x The X (horizontal) position (in pixels) of the marker on
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* the canvas
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* @param int $y The Y (vertical) position (in pixels) of the marker on the
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* canvas
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* @param array $values The values representing the data the marker 'points'
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* to
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* @access private
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*/
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function _drawMarker($x, $y, $values = false)
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{
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parent::_drawMarker($x, $y, $values);
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if ($this->_markerStart) {
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$this->_markerStart->_setParent($this);
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$this->_markerStart->_drawMarker($x, $y, $values);
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}
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$this->_getLineStyle();
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$this->_canvas->line(array('x0' => $x, 'y0' => $y, 'x1' => $x + $this->_deltaX, 'y1' => $y + $this->_deltaY));
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$this->_markerEnd->_setParent($this);
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$this->_markerEnd->_drawMarker(
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$x + $this->_deltaX,
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$y + $this->_deltaY,
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$values
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);
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}
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}
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?>
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