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<?php |
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namespace Flynt\Utils; |
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class ColorHelpers |
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{ |
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/** |
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* Converts a color from hex to rgba. |
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* |
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* @since 2.0 |
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* |
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* @param string $color The color to convert. |
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* @param int $opacity The color opacity. |
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* @param string $returnType The return format, string or array. |
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* |
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* @return mixed |
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*/ |
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public static function hexToRgba($color, $opacity = 1, $returnType = 'array') |
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{ |
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$color = str_replace('#', '', $color); |
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if (strlen($color) === 3) { |
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$r = hexdec(substr($color, 0, 1) . substr($color, 0, 1)); |
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$g = hexdec(substr($color, 1, 1) . substr($color, 1, 1)); |
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$b = hexdec(substr($color, 2, 1) . substr($color, 2, 1)); |
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} else { |
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$r = hexdec(substr($color, 0, 2)); |
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$g = hexdec(substr($color, 2, 2)); |
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$b = hexdec(substr($color, 4, 2)); |
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} |
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$rgba = [ $r, $g, $b, $opacity ]; |
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if ($returnType === 'string') { |
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return 'rgba(' . implode(',', $rgba) . ')'; |
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} |
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return $rgba; |
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} |
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/** |
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* Converts a color from rgba to hsla. |
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* |
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* @since 2.0 |
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* |
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* @param string $color The color to convert. |
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* @param int $opacity The color opacity. |
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* @param string $returnType The return format, string or array. |
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* |
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* @return mixed |
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*/ |
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public static function rgbaToHsla($color, $opacity = 1, $returnType = 'array') |
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{ |
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$r = $color[0] / 255; |
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$g = $color[1] / 255; |
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$b = $color[2] / 255; |
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$min = min($r, min($g, $b)); |
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$max = max($r, max($g, $b)); |
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$delta = $max - $min; |
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$h = 0; |
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$s = 0; |
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$l = 0; |
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if ($delta > 0) { |
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if ($max === $r) { |
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$h = fmod((($g - $b) / $delta), 6); |
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} else if ($max === $g) { |
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$h = ($b - $r) / $delta + 2; |
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} else { |
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$h = ($r - $g) / $delta + 4; |
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} |
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} |
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$h = round($h * 60); |
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if ($h < 0) { |
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$h += 360; |
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} |
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$l = ($min + $max) / 2; |
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$s = $delta == 0 ? 0 : $delta / (1 - abs(2 * $l - 1)); |
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$s = round($s * 100, 1); |
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$l = round($l * 100, 1); |
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$hsla = [ $h, "$s%", "$l%", $opacity ]; |
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if ($returnType === 'string') { |
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return 'hsla(' . implode(',', $hsla) . ')'; |
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} |
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return $hsla; |
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} |
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/** |
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* Converts a color from hex to hsla. |
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* |
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100
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* @since 2.0 |
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101
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* |
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* @param string $color The color to convert. |
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103
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* @param int $opacity The color opacity. |
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104
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* @param string $returnType The return format, string or array. |
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105
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* |
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106
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* @return mixed |
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*/ |
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public static function hexToHsla($color, $opacity = 1, $returnType = 'array') |
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{ |
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$rgba = self::hexToRgba($color, $opacity); |
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return self::rgbaToHsla($rgba, $opacity, $returnType); |
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112
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} |
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113
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} |
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flyntwp /
flynt
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