PixelColor ( hex )

Generate a 1x1 px image (encoded in base64) of the specified color

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Andrea Niro - Show more from this author

Sample input:

1. PixelColor ( "#FFF" )
2. PixelColor ( "#5A4419" )
3. PixelColor ( "F9F9F9" )

Sample output:

1. R0lGODlhAQABAPAAAA8PD////yH5BAAAAAAALAAAAAABAAEAAAICRAEAOw==
2. R0lGODlhAQABAPAAAFpEGf///yH5BAAAAAAALAAAAAABAAEAAAICRAEAOw==
3. R0lGODlhAQABAPAAAPn5+f///yH5BAAAAAAALAAAAAABAAEAAAICRAEAOw==

Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

Let ( [
	_hex	=	hex;
	_hex	=	Filter ( Upper ( hex ); "0123456789ABCDEF" );
	_length	=	Length ( _hex );
	_isValid=	Evaluate (
				_length = 6 or
				_length = 3
			);

	_cell	=	_length / 3;
	_hex.r	=	Left ( _hex; _cell );
	_hex.g	=	Middle ( _hex; _cell + 1; _cell );
	_hex.b	=	Right ( _hex; _cell );
	_hex.r	=	_hex.r & If ( _cell = 1; _hex.r );
	_hex.g	=	_hex.g & If ( _cell = 1; _hex.g );
	_hex.b	=	_hex.b & If ( _cell = 1; _hex.b );

	_dec.r	=	Base16To10 ( _hex.r );
	_dec.g	=	Base16To10 ( _hex.g );
	_dec.b	=	Base16To10 ( _hex.b );


	_uriData=	"data:image/gif;base64,";
	_prefix	=	"R0lGODlhAQABAPAA";
	_suffix	=	"/yH5BAAAAAAALAAAAAABAAEAAAICRAEAOw==";
	_color	=	PixelColor_EncodeTriplet ( 0; _dec.r; _dec.g ) &
			PixelColor_EncodeTriplet ( _dec.b; 255; 255 );

	_uri	=	_prefix & _color & _suffix;
	_name	=	_hex & ".gif";
	_image	=	Base64Decode ( _uri; _name )
];
	If ( _isValid;
		_uri
	)
)

Accepted inputs are:
#FFFFFF
FFFFFF
#FFF
FFF

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The function can output the image directly (_image) instead of the encoded string, if so desired.
The function also include the data prefix (_uriData) if the full Data URI is needed: just prepend it to the _uri variable

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Dependencies:
PixelColor_EncodeTriplet ( x ; y ; z ) [ https://www.briandunning.com/cf/2468 ]
Base16To10 ( hex ) [ Converts a value from hexadecimal (base16) to decimal (base10) ]

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Note: these functions are not guaranteed or supported by BrianDunning.com. Please contact the individual developer with any questions or problems.

PixelColor ( hex )

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