icingaweb2/library/Icinga/Chart/Render/RenderContext.php

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<?php
// {{{ICINGA_LICENSE_HEADER}}}
/**
* This file is part of Icinga 2 Web.
*
* Icinga 2 Web - Head for multiple monitoring backends.
* Copyright (C) 2013 Icinga Development Team
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* @copyright 2013 Icinga Development Team <info@icinga.org>
* @license http://www.gnu.org/licenses/gpl-2.0.txt GPL, version 2
* @author Icinga Development Team <info@icinga.org>
*/
// {{{ICINGA_LICENSE_HEADER}}}
namespace Icinga\Chart\Render;
use Icinga\Util\Dimension;
use DOMDocument;
class RenderContext {
private $viewBoxSize = array(1000, 1000);
private $padding = array(0, 0);
private $document;
private $ratio;
private $respectRatio = false;
private $paddingFacX = 1;
private $paddingFacY = 1;
public function __construct(DOMDocument $document, $width, $height)
{
$this->document = $document;
$this->ratio = $width/$height;
}
public function setViewBoxSize($x, $y)
{
$this->viewBoxSize = array($x, $y);
}
/**
* @return mixed
*/
public function getDocument()
{
return $this->document;
}
/**
* @return mixed
*/
public function getNrOfUnitsX()
{
return intval($this->viewBoxSize[0] * $this->ratio);
}
public function setPadding($horizontal, $vertical) {
$this->padding = array($horizontal, $vertical);
}
public function getPadding()
{
return array($this->paddingFacX, $this->paddingFacY);
}
public function keepRatio()
{
$this->respectRatio = true;
}
public function ignoreRatio()
{
$this->respectRatio = false;
}
/**
* @return mixed
*/
public function getNrOfUnitsY()
{
return $this->viewBoxSize[1];
}
public function toAbsolute($x, $y)
{
return array(
$this->getNrOfUnitsX() / 100 * $x / ($this->respectRatio ? $this->ratio : 1),// * $this->paddingFacX,
$this->getNrOfUnitsY() / 100 * $y// * $this->paddingFacY
);
}
public function paddingToScaleFactor(array $padding) {
list($horizontalPadding, $verticalPadding) = $this->toAbsolute($padding[1] + $padding[3], $padding[0] + $padding[2]);
return array(
($this->getNrOfUnitsX() - $horizontalPadding) / $this->getNrOfUnitsX(),
($this->getNrOfUnitsY() - $verticalPadding) / $this->getNrOfUnitsY()
);
}
}