[GD] watermark backgroung rectangle dimension problem ...

[whisher06]

Hi.
I've got this simple snippet:

// Set the content-type
header("Content-type: image/png");
/* image dimension */
$width= 400; 
$height= 300;
$fontSize= 15;
$paddingBottom= 5;
$paddingRight= 5;
$text = 'Whisher';
$smallW= $fontSize+$paddingRight;
$smallH= (strlen($text)*$fontSize);
/* Main */
$im = imagecreatetruecolor($width, $height);
$red = imagecolorallocate($im, 0, 0, 0);
imagefilledrectangle($im, 0, 0, $width, $height, $red);
// Create small rectangle
$grey= imagecolorallocatealpha($im, 136, 136,136, 100);
imagefilledrectangle($im, $width, $height, $width-$smallW, $height-$smallH, $grey);
// Replace path by your own font path
$font = 'fonts/monofont.ttf';
// Add the text
$dark = imagecolorallocate($im, 136, 136,136);
imagettftext($im, $fontSize, 90,$width-$paddingRight, $height-$paddingBottom, $dark, $font, $text);
imagepng($im);
imagedestroy($im);

?>

What I'm not able to work out is set dynamically
the small rectangle dimension (the background of the text).

$smallW= $fontSize+$paddingRight; (fit quite well)
$smallH= (strlen($text)*$fontSize); (this is too great)

Could you help me, please ?

Bye.

[Weedpacket]

I think you're after [man]imagettfbbox[/man] to determine the dimensions of the rendered text; (incidentally, font size is measured in points, not pixels).

[whisher06]

Thank for the point 😉

$smallW= $fontSize+$paddingRight;
$smallH= (strlen($text)*$fontSize/1.6);

I worked out this simple way.

Do you think is a good approach ?

Bye.