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khosb/includes/pear/Image/Graph/Layout/Matrix.php

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<?php
/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* Image_Graph - PEAR PHP OO Graph Rendering Utility.
*
* PHP versions 4 and 5
*
* LICENSE: This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or (at your
* option) any later version. This library is distributed in the hope that it
* will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
* General Public License for more details. You should have received a copy of
* the GNU Lesser General Public License along with this library; if not, write
* to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*
* @category Images
* @package Image_Graph
* @subpackage Layout
* @author Jesper Veggerby <pear.nosey@veggerby.dk>
* @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen
* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
* @version CVS: $Id: Matrix.php,v 1.8 2005/08/24 20:35:58 nosey Exp $
* @link http://pear.php.net/package/Image_Graph
*/
/**
* Include file Image/Graph/Layout.php
*/
require_once 'Image/Graph/Layout.php';
/**
* Layout for displaying elements in a matix.
*
* @category Images
* @package Image_Graph
* @subpackage Layout
* @author Jesper Veggerby <pear.nosey@veggerby.dk>
* @copyright Copyright (C) 2003, 2004 Jesper Veggerby Hansen
* @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1
* @version Release: @package_version@
* @link http://pear.php.net/package/Image_Graph
*/
class Image_Graph_Layout_Matrix extends Image_Graph_Layout
{
/**
* Layout matrix
* @var array
* @access private
*/
var $_matrix = false;
/**
* The number of rows
* @var int
* @access private
*/
var $_rows = false;
/**
* The number of columns
* @var int
* @access private
*/
var $_cols = false;
/**
* Image_Graph_Layout_Matrix [Constructor]
*
* @param int $rows The number of rows
* @param int $cols The number of cols
* @param bool $autoCreate Specifies whether the matrix should automatically
* be filled with newly created Image_Graph_Plotares objects, or they will
* be added manually
*/
function Image_Graph_Layout_Matrix($rows, $cols, $autoCreate = true)
{
parent::Image_Graph_Layout();
$this->_rows = $rows;
$this->_cols = $cols;
if (($this->_rows > 0) && ($this->_cols > 0)) {
$this->_matrix = array(array());
for ($i = 0; $i < $this->_rows; $i++) {
for ($j = 0; $j < $this->_cols; $j++) {
if ($autoCreate) {
$this->_matrix[$i][$j] =& $this->addNew('plotarea');
$this->_pushEdges($i, $j);
} else {
$this->_matrix[$i][$j] = false;
}
}
}
}
}
/**
* Pushes the edges on the specified position in the matrix
*
* @param int $row The row
* @param int $col The column
* @access private
*/
function _pushEdges($row, $col)
{
if ((isset($this->_matrix[$row])) && (isset($this->_matrix[$row][$col]))) {
$height = 100/$this->_rows;
$width = 100/$this->_cols;
if ($col > 0) {
$this->_matrix[$row][$col]->_push('left', round($col*$width) . '%');
}
if ($col+1 < $this->_cols) {
$this->_matrix[$row][$col]->_push('right', round(100-($col+1)*$width) . '%');
}
if ($row > 0) {
$this->_matrix[$row][$col]->_push('top', round($row*$height) . '%');
}
if ($row+1 < $this->_rows) {
$this->_matrix[$row][$col]->_push('bottom', round(100-($row+1)*$height) . '%');
}
}
}
/**
* Get the area on the specified position in the matrix
*
* @param int $row The row
* @param int $col The column
* @return Image_Graph_Layout The element of position ($row, $col) in the
* matrix
*/
function &getEntry($row, $col)
{
if ((isset($this->_matrix[$row])) && (isset($this->_matrix[$row][$col]))) {
return $this->_matrix[$row][$col];
} else {
$result = null;
return $result;
}
}
/**
* Get the area on the specified position in the matrix
*
* @param int $row The row
* @param int $col The column
* @param Image_Graph_Layout $element The element to set in the position
* ($row, $col) in the matrix
*/
function setEntry($row, $col, &$element)
{
$this->_matrix[$row][$col] =& $element;
$this->_pushEdges($row, $col);
}
/**
* Update coordinates
*
* @access private
*/
function _updateCoords()
{
for ($i = 0; $i < $this->_rows; $i++) {
for ($j = 0; $j < $this->_cols; $j++) {
$element =& $this->getEntry($i, $j);
$this->add($element);
}
}
parent::_updateCoords();
}
/**
* Output the layout to the canvas
*
* @return bool Was the output 'good' (true) or 'bad' (false).
* @access private
*/
function _done()
{
$result = true;
for ($i = 0; $i < $this->_rows; $i++) {
for ($j = 0; $j < $this->_cols; $j++) {
$element =& $this->getEntry($i, $j);
if ($element) {
if (!$element->_done()) {
$result = false;
}
}
}
}
return $result;
}
}
?>