385 lines
12 KiB
PHP
385 lines
12 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 - Main class for the graph creation.
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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 Legend
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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: Legend.php,v 1.15 2005/09/30 18:59:18 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/Layout.php
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*/
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require_once 'Image/Graph/Layout.php';
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/**
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* Displays a legend for a plotarea.
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*
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* A legend can be displayed in two ways:
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*
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* 1 As an overlayed box within the plotarea
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*
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* 2 Layout'ed on the canvas smewhere next to the plotarea.
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*
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* @category Images
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* @package Image_Graph
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* @subpackage Legend
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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_Legend extends Image_Graph_Layout
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{
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/**
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* Alignment of the text
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* @var int
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* @access private
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*/
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var $_alignment = false;
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/**
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* The plotarea(s) to show the legend for
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* @var array
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* @access private
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*/
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var $_plotareas = array();
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/**
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* Should markers be shown or not on this legend
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* @var bool
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* @access private
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*/
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var $_showMarker = false;
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/**
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* Image_Graph_Legend [Constructor]
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*/
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function Image_Graph_Legend()
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{
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parent::Image_Graph_Layout();
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$this->_padding = 5;
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}
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/**
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* The number of actual plots in the plot area
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*
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* @return int The number of plotes
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* @access private
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*/
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function _plotCount()
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{
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$count = 0;
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$keys = array_keys($this->_plotareas);
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foreach($keys as $key) {
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$plotarea =& $this->_plotareas[$key];
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if (is_a($plotarea, 'Image_Graph_Plotarea')) {
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$keys2 = array_keys($plotarea->_elements);
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foreach ($keys2 as $key) {
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$element =& $plotarea->_elements[$key];
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if (is_a($element, 'Image_Graph_Plot')) {
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$count ++;
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}
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}
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unset($keys2);
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}
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}
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unset($keys);
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return $count;
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}
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/**
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* Get a default parameter array for legendSamples
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* @param bool $simulate Whether the array should be used for simulation or
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* not
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* @return array Default parameter array
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* @access private
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*/
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function _parameterArray($simulate = false)
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{
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$param['left'] = $this->_left + $this->_padding;
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$param['top'] = $this->_top + $this->_padding;
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$param['right'] = $this->_right - $this->_padding;
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$param['bottom'] = $this->_bottom - $this->_padding;
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$param['align'] = $this->_alignment;
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$param['x'] = $this->_left + $this->_padding;
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$param['y'] = $this->_top + $this->_padding;
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$param['width'] = 16;
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$param['height'] = 16;
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$param['show_marker'] = $this->_showMarker;
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$param['maxwidth'] = 0;
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$param['font'] = $this->_getFont();
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if ($simulate) {
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$param['simulate'] = true;
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}
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return $param;
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}
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/**
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* The height of the element on the canvas
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*
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* @return int Number of pixels representing the height of the element
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* @access private
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*/
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function _height()
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{
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$parent = (is_object($this->_parent) ? get_class($this->_parent) : $this->_parent);
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if (strtolower($parent) == 'image_graph_plotarea') {
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$param = $this->_parameterArray(true);
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$param['align'] = IMAGE_GRAPH_ALIGN_VERTICAL;
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$param0 = $param;
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$keys = array_keys($this->_plotareas);
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foreach($keys as $key) {
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$plotarea =& $this->_plotareas[$key];
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$keys2 = array_keys($plotarea->_elements);
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foreach($keys2 as $key) {
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$element =& $plotarea->_elements[$key];
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if (is_a($element, 'Image_Graph_Plot')) {
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$element->_legendSample($param);
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}
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}
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unset($keys2);
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}
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unset($keys);
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return abs($param['y'] - $param0['y']) + 2*$this->_padding;
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} else {
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return parent::height();
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}
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}
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/**
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* The width of the element on the canvas
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*
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* @return int Number of pixels representing the width of the element
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* @access private
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*/
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function _width()
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{
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$parent = (is_object($this->_parent) ? get_class($this->_parent) : $this->_parent);
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if (strtolower($parent) == 'image_graph_plotarea') {
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$param = $this->_parameterArray(true);
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$param['align'] = IMAGE_GRAPH_ALIGN_VERTICAL;
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$keys = array_keys($this->_plotareas);
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foreach($keys as $key) {
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$plotarea =& $this->_plotareas[$key];
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$keys2 = array_keys($plotarea->_elements);
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foreach($keys2 as $key) {
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$element =& $plotarea->_elements[$key];
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if (is_a($element, 'Image_Graph_Plot')) {
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$element->_legendSample($param);
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}
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}
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unset($keys2);
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}
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unset($keys);
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return $param['maxwidth'];
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} else {
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return parent::width();
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}
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}
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/**
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* Set the alignment of the legend
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*
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* @param int $alignment The alignment
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*/
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function setAlignment($alignment)
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{
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$this->_alignment = $alignment;
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}
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/**
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* Update coordinates
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*
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* @access private
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*/
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function _updateCoords()
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{
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parent::_updateCoords();
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$parent = (is_object($this->_parent) ? get_class($this->_parent) : $this->_parent);
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if (strtolower($parent) == 'image_graph_plotarea') {
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$w = $this->_width();
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$h = $this->_height();
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if ($this->_alignment === false) {
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$this->_alignment = IMAGE_GRAPH_ALIGN_TOP + IMAGE_GRAPH_ALIGN_RIGHT;
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}
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if (($this->_alignment & IMAGE_GRAPH_ALIGN_BOTTOM) != 0) {
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$y = $this->_parent->_fillBottom() - $h - $this->_padding;
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} else {
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$y = $this->_parent->_fillTop() + $this->_padding;
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}
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if (($this->_alignment & IMAGE_GRAPH_ALIGN_LEFT) != 0) {
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$x = $this->_parent->_fillLeft() + $this->_padding;
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} else {
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$x = $this->_parent->_fillRight() - $w - $this->_padding;
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}
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$this->_setCoords($x, $y, $x + $w, $y + $h);
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}
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}
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/**
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* Sets Plotarea
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*
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* @param Image_Graph_Plotarea $plotarea The plotarea
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*/
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function setPlotarea(& $plotarea)
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{
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if (is_a($plotarea, 'Image_Graph_Plotarea')) {
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$this->_plotareas[] =& $plotarea;
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}
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}
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/**
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* Sets the parent. The parent chain should ultimately be a GraPHP object
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*
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* @see Image_Graph
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* @param Image_Graph_Common $parent The parent
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* @access private
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*/
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function _setParent(& $parent)
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{
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parent::_setParent($parent);
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if (count($this->_plotareas) == 0) {
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$this->setPlotarea($parent);
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}
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}
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/**
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* Set if this legends should show markers
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*
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* @param bool $showMarker True if markers are to be shown, false is not
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*/
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function setShowMarker($showMarker)
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{
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$this->_showMarker = $showMarker;
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}
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/**
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* Output the plot
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*
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* @return bool Was the output 'good' (true) or 'bad' (false).
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* @access private
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*/
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function _done()
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{
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if (Image_Graph_Element::_done() === false) {
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return false;
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}
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$this->_canvas->startGroup(get_class($this));
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$param = $this->_parameterArray();
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$parent = (is_object($this->_parent) ?
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get_class($this->_parent) :
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$this->_parent
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);
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if (strtolower($parent) == 'image_graph_plotarea') {
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$this->_getFillStyle();
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$this->_getLineStyle();
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$this->_canvas->rectangle(
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array(
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'x0' => $this->_left,
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'y0' => $this->_top,
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'x1' => $this->_right,
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'y1' => $this->_bottom
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)
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);
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$param = $this->_parameterArray();
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$keys = array_keys($this->_plotareas);
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foreach($keys as $key) {
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$plotarea =& $this->_plotareas[$key];
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$keys2 = array_keys($plotarea->_elements);
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foreach($keys2 as $key) {
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$element =& $plotarea->_elements[$key];
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if (is_a($element, 'Image_Graph_Plot')) {
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$element->_legendSample($param);
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}
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}
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unset($keys2);
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}
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unset($keys);
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} else {
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$param0 = $param;
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$param0['simulate'] = true;
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$keys = array_keys($this->_plotareas);
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foreach($keys as $key) {
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$plotarea =& $this->_plotareas[$key];
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$keys2 = array_keys($plotarea->_elements);
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foreach($keys2 as $key) {
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$element =& $plotarea->_elements[$key];
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if (is_a($element, 'Image_Graph_Plot')) {
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$element->_legendSample($param0);
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}
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}
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unset($keys2);
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}
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unset($keys);
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if (($this->_alignment & IMAGE_GRAPH_ALIGN_VERTICAL) != 0) {
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if ($param0['x'] == $param['x']) {
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$param['y'] = $param['y'] + ($this->_height() - ($param0['y'] - $param['y']))/2;
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}
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} else {
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if ($param0['y'] == $param['y']) {
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$param['x'] = $param['x'] + ($this->_width() - ($param0['x'] - $param['x']))/2;
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}
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}
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$keys = array_keys($this->_plotareas);
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foreach($keys as $key) {
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$plotarea =& $this->_plotareas[$key];
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$keys2 = array_keys($plotarea->_elements);
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foreach($keys2 as $key) {
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$element =& $plotarea->_elements[$key];
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if (is_a($element, 'Image_Graph_Plot')) {
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$element->_legendSample($param);
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}
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}
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unset($keys2);
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}
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unset($keys);
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}
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$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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