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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: $Id$
+ * @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;
+ }
+
+}
+
+?> \ No newline at end of file