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<?php
/**
* This file is part of PHPWord - A pure PHP library for reading and writing
* word processing documents.
*
* PHPWord is free software distributed under the terms of the GNU Lesser
* General Public License version 3 as published by the Free Software Foundation.
*
* For the full copyright and license information, please read the LICENSE
* file that was distributed with this source code. For the full list of
* contributors, visit https://github.com/PHPOffice/PHPWord/contributors.
*
* @see https://github.com/PHPOffice/PHPWord
* @copyright 2010-2018 PHPWord contributors
* @license http://www.gnu.org/licenses/lgpl.txt LGPL version 3
*/
namespace PhpOffice\PhpWord\Shared;
/**
* Common converter functions
*/
class Converter
{
const INCH_TO_CM = 2.54;
const INCH_TO_TWIP = 1440;
const INCH_TO_PIXEL = 96;
const INCH_TO_POINT = 72;
const INCH_TO_PICA = 6;
const PIXEL_TO_EMU = 9525;
const DEGREE_TO_ANGLE = 60000;
/**
* Convert centimeter to twip
*
* @param float $centimeter
* @return float
*/
public static function cmToTwip($centimeter = 1)
{
return $centimeter / self::INCH_TO_CM * self::INCH_TO_TWIP;
}
/**
* Convert centimeter to inch
*
* @param float $centimeter
* @return float
*/
public static function cmToInch($centimeter = 1)
{
return $centimeter / self::INCH_TO_CM;
}
/**
* Convert centimeter to pixel
*
* @param float $centimeter
* @return float
*/
public static function cmToPixel($centimeter = 1)
{
return $centimeter / self::INCH_TO_CM * self::INCH_TO_PIXEL;
}
/**
* Convert centimeter to point
*
* @param float $centimeter
* @return float
*/
public static function cmToPoint($centimeter = 1)
{
return $centimeter / self::INCH_TO_CM * self::INCH_TO_POINT;
}
/**
* Convert centimeter to EMU
*
* @param float $centimeter
* @return float
*/
public static function cmToEmu($centimeter = 1)
{
return round($centimeter / self::INCH_TO_CM * self::INCH_TO_PIXEL * self::PIXEL_TO_EMU);
}
/**
* Convert inch to twip
*
* @param float $inch
* @return float
*/
public static function inchToTwip($inch = 1)
{
return $inch * self::INCH_TO_TWIP;
}
/**
* Convert inch to centimeter
*
* @param float $inch
* @return float
*/
public static function inchToCm($inch = 1)
{
return $inch * self::INCH_TO_CM;
}
/**
* Convert inch to pixel
*
* @param float $inch
* @return float
*/
public static function inchToPixel($inch = 1)
{
return $inch * self::INCH_TO_PIXEL;
}
/**
* Convert inch to point
*
* @param float $inch
* @return float
*/
public static function inchToPoint($inch = 1)
{
return $inch * self::INCH_TO_POINT;
}
/**
* Convert inch to EMU
*
* @param float $inch
* @return float
*/
public static function inchToEmu($inch = 1)
{
return round($inch * self::INCH_TO_PIXEL * self::PIXEL_TO_EMU);
}
/**
* Convert pixel to twip
*
* @param int $pixel
* @return float
*/
public static function pixelToTwip($pixel = 1)
{
return $pixel / self::INCH_TO_PIXEL * self::INCH_TO_TWIP;
}
/**
* Convert pixel to centimeter
*
* @param int $pixel
* @return float
*/
public static function pixelToCm($pixel = 1)
{
return $pixel / self::INCH_TO_PIXEL * self::INCH_TO_CM;
}
/**
* Convert pixel to point
*
* @param int $pixel
* @return float
*/
public static function pixelToPoint($pixel = 1)
{
return $pixel / self::INCH_TO_PIXEL * self::INCH_TO_POINT;
}
/**
* Convert pixel to EMU
*
* @param int $pixel
* @return int
*/
public static function pixelToEmu($pixel = 1)
{
return round($pixel * self::PIXEL_TO_EMU);
}
/**
* Convert point to twip unit
*
* @param int $point
* @return float
*/
public static function pointToTwip($point = 1)
{
return $point / self::INCH_TO_POINT * self::INCH_TO_TWIP;
}
/**
* Convert point to pixel
*
* @param float $point
* @return float
*/
public static function pointToPixel($point = 1)
{
return $point / self::INCH_TO_POINT * self::INCH_TO_PIXEL;
}
/**
* Convert point to EMU
*
* @param int $point
* @return float
*/
public static function pointToEmu($point = 1)
{
return round($point / self::INCH_TO_POINT * self::INCH_TO_PIXEL * self::PIXEL_TO_EMU);
}
/**
* Convert point to cm
*
* @param float $point
* @return float
*/
public static function pointToCm($point = 1)
{
return $point / self::INCH_TO_POINT * self::INCH_TO_CM;
}
/**
* Convert EMU to pixel
*
* @param int $emu
* @return float
*/
public static function emuToPixel($emu = 1)
{
return round($emu / self::PIXEL_TO_EMU);
}
/**
* Convert pica to point
*
* @param int $pica
* @return float
*/
public static function picaToPoint($pica = 1)
{
return $pica / self::INCH_TO_PICA * self::INCH_TO_POINT;
}
/**
* Convert degree to angle
*
* @param int $degree
* @return int
*/
public static function degreeToAngle($degree = 1)
{
return (int) round($degree * self::DEGREE_TO_ANGLE);
}
/**
* Convert angle to degrees
*
* @param int $angle
* @return int
*/
public static function angleToDegree($angle = 1)
{
return round($angle / self::DEGREE_TO_ANGLE);
}
/**
* Convert HTML hexadecimal to RGB
*
* @param string $value HTML Color in hexadecimal
* @return array Value in RGB
*/
public static function htmlToRgb($value)
{
if ($value[0] == '#') {
$value = substr($value, 1);
}
if (strlen($value) == 6) {
list($red, $green, $blue) = array($value[0] . $value[1], $value[2] . $value[3], $value[4] . $value[5]);
} elseif (strlen($value) == 3) {
list($red, $green, $blue) = array($value[0] . $value[0], $value[1] . $value[1], $value[2] . $value[2]);
} else {
return false;
}
$red = hexdec($red);
$green = hexdec($green);
$blue = hexdec($blue);
return array($red, $green, $blue);
}
/**
* Transforms a size in CSS format (eg. 10px, 10px, ...) to points
*
* @param string $value
* @return float
*/
public static function cssToPoint($value)
{
if ($value == '0') {
return 0;
}
$matches = array();
if (preg_match('/^[+-]?([0-9]+\.?[0-9]*)?(px|em|ex|%|in|cm|mm|pt|pc)$/i', $value, $matches)) {
$size = $matches[1];
$unit = $matches[2];
switch ($unit) {
case 'pt':
return $size;
case 'px':
return self::pixelToPoint($size);
case 'cm':
return self::cmToPoint($size);
case 'mm':
return self::cmToPoint($size / 10);
case 'in':
return self::inchToPoint($size);
case 'pc':
return self::picaToPoint($size);
}
}
return null;
}
/**
* Transforms a size in CSS format (eg. 10px, 10px, ...) to twips
*
* @param string $value
* @return float
*/
public static function cssToTwip($value)
{
return self::pointToTwip(self::cssToPoint($value));
}
/**
* Transforms a size in CSS format (eg. 10px, 10px, ...) to pixel
*
* @param string $value
* @return float
*/
public static function cssToPixel($value)
{
return self::pointToPixel(self::cssToPoint($value));
}
/**
* Transforms a size in CSS format (eg. 10px, 10px, ...) to cm
*
* @param string $value
* @return float
*/
public static function cssToCm($value)
{
return self::pointToCm(self::cssToPoint($value));
}
/**
* Transforms a size in CSS format (eg. 10px, 10px, ...) to emu
*
* @param string $value
* @return float
*/
public static function cssToEmu($value)
{
return self::pointToEmu(self::cssToPoint($value));
}
}