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Add miscellaneous utility functions

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This commit is contained in:
Kijin Sung 2016-01-20 14:07:11 +09:00
parent c74a88201a
commit bde13db245
2 changed files with 454 additions and 53 deletions
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60
common/legacy.php
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@ -1179,63 +1179,17 @@ function removeSrcHack($match)
return "<{$match[1]}{$tag}{$attr}{$match[4]}>";
}
// convert hexa value to RGB
/**
* Convert hexa value to RGB
*
* @param string $hexstr
* @return array
*/
if(!function_exists('hexrgb'))
{
/**
* Convert hexa value to RGB
*
* @param string $hexstr
* @return array
*/
function hexrgb($hex)
{
$hex = ltrim($hex, '#');
if(strlen($hex) == 3)
{
$r = hexdec(substr($hex, 0, 1) . substr($hex, 0, 1));
$g = hexdec(substr($hex, 1, 1) . substr($hex, 1, 1));
$b = hexdec(substr($hex, 2, 1) . substr($hex, 2, 1));
}
elseif(strlen($hex) == 6)
{
$r = hexdec(substr($hex, 0, 2));
$g = hexdec(substr($hex, 2, 2));
$b = hexdec(substr($hex, 4, 2));
}
else
{
$r = $g = $b = null;
}
return array('red' => $r, 'green' => $g, 'blue' => $b, 'r' => $r, 'g' => $g, 'b' => $b);
}
}
// convert RGB value to hexa
if(!function_exists('rgbhex'))
{
/**
* convert RGB value to hexa
*
* @param array $rgb
* @param bool $hash_prefix
* @return string
*/
function rgbhex(array $rgb, $hash_prefix = true)
{
if(!isset($rgb['r']) && !isset($rgb['g']) && !isset($rgb['b']) && count($rgb) >= 3)
{
list($rgb['r'], $rgb['g'], $rgb['b']) = $rgb;
}
if(!isset($rgb['r']) || !isset($rgb['g']) || !isset($rgb['b']) || $rgb['r'] > 255 || $rgb['g'] > 255 || $rgb['b'] > 255)
{
return '#000000';
}
$hex = $hash_prefix ? '#' : '';
$hex .= str_pad(dechex(max(0, $rgb['r'])), 2, '0', STR_PAD_LEFT);
$hex .= str_pad(dechex(max(0, $rgb['g'])), 2, '0', STR_PAD_LEFT);
$hex .= str_pad(dechex(max(0, $rgb['b'])), 2, '0', STR_PAD_LEFT);
return $hex;
return hex2rgb($hex);
}
}