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khosb/includes/pear/Image/Graph/Layout/Horizontal.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: Horizontal.php,v 1.10 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 two elements side by side.
*
* This splits the area contained by this element in two, side by side by
* a specified percentage (relative to the left side). A layout can be nested.
* Fx. a HorizontalLayout can layout two {@link Image_Graph_Layout_Vertical}s to
* make a 2 by 2 matrix of 'element-areas'.
*
* @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_Horizontal extends Image_Graph_Layout
{
/**
* Part1 of the layout
* @var GraPHPElemnt
* @access private
*/
var $_part1 = false;
/**
* Part2 of the layout
* @var GraPHPElemnt
* @access private
*/
var $_part2 = false;
/**
* The percentage of the graph where the split occurs
* @var int
* @access private
*/
var $_percentage;
/**
* An absolute position where the split occurs
* @var int
* @access private
*/
var $_absolute;
/**
* HorizontalLayout [Constructor]
*
* @param Image_Graph_Element $part1 The 1st part of the layout
* @param Image_Graph_Element $part2 The 2nd part of the layout
* @param int $percentage The percentage of the layout to split at
*/
function Image_Graph_Layout_Horizontal(& $part1, & $part2, $percentage = 50)
{
parent::Image_Graph_Layout();
if (!is_a($part1, 'Image_Graph_Layout')) {
$this->_error(
'Cannot create layout on non-layouable parts: ' . get_class($part1),
array('part1' => &$part1, 'part2' => &$part2)
);
} elseif (!is_a($part2, 'Image_Graph_Layout')) {
$this->_error(
'Cannot create layout on non-layouable parts: ' . get_class($part2),
array('part1' => &$part1, 'part2' => &$part2)
);
} else {
$this->_part1 =& $part1;
$this->_part2 =& $part2;
$this->add($this->_part1);
$this->add($this->_part2);
};
if ($percentage === 'auto') {
$this->_percentage = false;
$this->_absolute = 'runtime';
} else {
$this->_absolute = false;
$this->_percentage = max(0, min(100, $percentage));
}
$this->_split();
$this->_padding = 0;
}
/**
* Gets the absolute size of one of the parts.
*
* @param string $part The name of the part - auto_part(1|2)
* @return int The number of pixels the edge should be pushed
* @since 0.3.0dev2
* @access private
*/
function _getAbsolute(&$part)
{
$part1Size = $this->_part1->_getAutoSize();
$part2Size = $this->_part2->_getAutoSize();
$this->_percentage = false;
if (($part1Size !== false) and ($part2Size !== false)) {
$width = $this->_fillWidth() * $part1Size / ($part1Size + $part2Size);
} elseif ($part1Size !== false) {
$width = $part1Size;
} elseif ($part2Size !== false) {
$width = -$part2Size;
} else {
$width = $this->_fillWidth() / 2;
}
if ($part == 'auto_part2') {
$width = -$width;
}
return $width;
}
/**
* Splits the layout between the parts, by the specified percentage
*
* @access private
*/
function _split()
{
if (($this->_part1) && ($this->_part2)) {
if ($this->_percentage !== false) {
$split1 = 100 - $this->_percentage;
$split2 = $this->_percentage;
$this->_part1->_push('right', "$split1%");
$this->_part2->_push('left', "$split2%");
} else {
$this->_part1->_push('right', 'auto_part1');
$this->_part2->_push('left', 'auto_part2');
}
}
}
/**
* Output the layout to the canvas
*
* @return bool Was the output 'good' (true) or 'bad' (false).
* @access private
*/
function _done()
{
if (($this->_part1) && ($this->_part2)) {
return (($this->_part1->_done()) && ($this->_part2->_done()));
}
return true;
}
}
?>