304 lines
8.8 KiB
PHP
304 lines
8.8 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 Plotarea
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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: Map.php,v 1.9 2005/08/24 20:36:01 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/Plotarea.php
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*/
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require_once 'Image/Graph/Plotarea.php';
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/**
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* Plot area used for map plots.
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*
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* A map plot is a chart that displays a map (fx. a world map) in the form of .
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* png file. The maps must be located in the /Images/Maps folder and a
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* corresponding .txt files mush also exist in this location where named
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* locations are mapped to an (x, y) coordinate of the map picture (this text
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* file is tab separated with 'Name' 'X' 'Y' values, fx 'Denmark 378 223'). The
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* x-values in the dataset are then the named locations (fx 'Denmark') and the
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* y-values are then the data to plot. Currently the best (if not only) use is
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* to combine a map plot area with a {@link Image_Graph_Plot_Dot} using {@link
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* Image_Graph_Marker_PercentageCircle} as marker.
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*
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* @category Images
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* @package Image_Graph
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* @subpackage Plotarea
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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_Plotarea_Map extends Image_Graph_Plotarea
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{
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/**
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* The GD image for the map
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* @var string
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* @access private
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*/
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var $_imageMap;
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/**
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* The value for scaling the width and height to fit into the layout boundaries
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* @var int
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* @access private
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*/
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var $_scale;
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/**
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* The (x,y)-points for the named point
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* @var array
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* @access private
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*/
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var $_mapPoints;
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/**
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* The original size of the image map
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* @var array
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* @access private
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*/
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var $_mapSize;
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/**
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* PlotareaMap [Constructor]
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*
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* @param string $map The name of the map, i.e. the [name].png and [name].
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* txt files located in the Images/maps folder
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*/
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function Image_Graph_Plotarea_Map($map)
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{
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parent::Image_Graph_Plotarea();
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$this->_imageMap = dirname(__FILE__)."/../Images/Maps/$map.png";
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$points = file(dirname(__FILE__)."/../Images/Maps/$map.txt");
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list($width, $height) = getimagesize($this->_imageMap);
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$this->_mapSize['X'] = $width;
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$this->_mapSize['Y'] = $height;
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if (is_array($points)) {
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unset($this->_mapPoints);
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foreach ($points as $line) {
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list($country, $x, $y) = explode("\t", $line);
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$this->_mapPoints[$country] = array('X' => $x, 'Y' => $y);
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}
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}
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}
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/**
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* Left boundary of the background fill area
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*
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* @return int Leftmost position on the canvas
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* @access private
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*/
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function _fillLeft()
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{
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return $this->_left + $this->_padding;
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}
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/**
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* Top boundary of the background fill area
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*
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* @return int Topmost position on the canvas
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* @access private
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*/
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function _fillTop()
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{
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return $this->_top + $this->_padding;
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}
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/**
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* Right boundary of the background fill area
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*
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* @return int Rightmost position on the canvas
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* @access private
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*/
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function _fillRight()
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{
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return $this->_right - $this->_padding;
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}
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/**
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* Bottom boundary of the background fill area
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*
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* @return int Bottommost position on the canvas
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* @access private
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*/
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function _fillBottom()
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{
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return $this->_bottom - $this->_padding;
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}
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/**
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* Set the extrema of the axis
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*
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* @param Image_Graph_Plot $plot The plot that 'hold' the values
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* @access private
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*/
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function _setExtrema(& $plot)
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{
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}
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/**
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* Get the X pixel position represented by a value
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*
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* @param double $value The value to get the pixel-point for
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* @return double The pixel position along the axis
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* @access private
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*/
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function _pointX($value)
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{
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$country = $value['X'];
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return $this->_plotLeft+$this->_mapPoints[$country]['X']*$this->_scale;
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}
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/**
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* Get the Y pixel position represented by a value
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*
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* @param double $value The value to get the pixel-point for
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* @return double The pixel position along the axis
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* @access private
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*/
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function _pointY($value)
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{
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$country = $value['X'];
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return $this->_plotTop+$this->_mapPoints[$country]['Y']*$this->_scale;
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}
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/**
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* Hides the axis
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*/
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function hideAxis()
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{
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}
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/**
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* Add a point to the maps
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*
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* @param int $latitude The latitude of the point
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* @param int $longiude The longitude of the point
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* @param string $name The name of the plot
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*/
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function addMappoint($latitude, $longitude, $name)
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{
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$x = (($longitude + 180) * ($this->_mapSize['X'] / 360));
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$y = ((($latitude * -1) + 90) * ($this->_mapSize['Y'] / 180));
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$this->_mapPoints[$name] = array('X' => $x, 'Y' => $y);
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}
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/**
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* Add a point to the maps
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*
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* @param int $x The latitude of the point
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* @param int $y The longitude of the point
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* @param string $name The name of the plot
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*/
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function addPoint($x, $y, $name)
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{
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$this->_mapPoints[$name] = array('X' => $x, 'Y' => $y);
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}
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/**
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* Update coordinates
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*
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* @access private
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*/
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function _updateCoords()
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{
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parent::_updateCoords();
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$mapAspectRatio = $this->_mapSize['X']/$this->_mapSize['Y'];
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$plotAspectRatio = ($width = $this->_fillWidth())/($height = $this->_fillHeight());
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$scaleFactorX = ($mapAspectRatio > $plotAspectRatio);
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if ((($this->_mapSize['X'] <= $width) && ($this->_mapSize['Y'] <= $height)) ||
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(($this->_mapSize['X'] >= $width) && ($this->_mapSize['Y'] >= $height)))
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{
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if ($scaleFactorX) {
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$this->_scale = $width / $this->_mapSize['X'];
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} else {
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$this->_scale = $height / $this->_mapSize['Y'];
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}
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} elseif ($this->_mapSize['X'] < $width) {
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$this->_scale = $height / $this->_mapSize['Y'];
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} elseif ($this->_mapSize['Y'] < $height) {
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$this->_scale = $width / $this->_mapSize['X'];
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}
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$this->_plotLeft = ($this->_fillLeft() + $this->_fillRight() -
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$this->_mapSize['X']*$this->_scale)/2;
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$this->_plotTop = ($this->_fillTop() + $this->_fillBottom() -
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$this->_mapSize['Y']*$this->_scale)/2;
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$this->_plotRight = ($this->_fillLeft() + $this->_fillRight() +
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$this->_mapSize['X']*$this->_scale)/2;
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$this->_plotBottom = ($this->_fillTop() + $this->_fillBottom() +
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$this->_mapSize['Y']*$this->_scale)/2;
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}
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/**
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* Output the plotarea to the canvas
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*
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* @return bool Was the output 'good' (true) or 'bad' (false).
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* @access private
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*/
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function _done()
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{
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$this->_getFillStyle();
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$this->_canvas->rectangle(
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array(
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'x0' => $this->_fillLeft(),
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'y0' => $this->_fillTop(),
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'x1' => $this->_fillRight(),
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'y1' => $this->_fillBottom()
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)
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);
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$scaledWidth = $this->_mapSize['X']*$this->_scale;
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$scaledHeight = $this->_mapSize['Y']*$this->_scale;
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$this->_canvas->image(
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array(
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'x' => $this->_plotLeft,
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'y' => $this->_plotTop,
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'filename' => $this->_imageMap,
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'width' => $scaledWidth,
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'height' => $scaledHeight
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)
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);
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return Image_Graph_Layout::_done();
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}
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}
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?>
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