[libGD] #80 [Comment added] bounds returned by stringFT sometimes clips a few pixels off the right

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FS#80 - bounds returned by stringFT sometimes clips a few pixels off the right
User who did this - Colen Garoutte-Carson (Colen)

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I see this with freetype 2.3.4.  I'm making 2 calls to stringFT.  First I get the bounds and figure out the height and width like so (in Perl) :

<code>@bounds = GD::Image->stringFT($fg, $font, $pt, $rot, 0, 0, $text);

$left = &min($bounds[0], &min($bounds[2], &min($bounds[4], $bounds[6]))); #in case rotated
$right = &max($bounds[0], &max($bounds[2], &max($bounds[4], $bounds[6])));
$top = &min($bounds[1], &min($bounds[3], &min($bounds[5], $bounds[7])));
$bottom = &max($bounds[1], &max($bounds[3], &max($bounds[5], $bounds[7])));
$width = $right - $left;
$height = $bottom - $top;
</code>
Then I create an image and move the origin.  Since the origin was 0,0 the first time, -$left is the # of pixels needed left of the origin, and -$top is # of pixels needed above the origin.

<code>
# when not rotated
$xpos = -$left;
$ypos = -$top;
</code>

(Actually, I do something slightly less efficient, to determine the maximum descent.  Is there a way to read that from the font directly?)

<code>
$im = new GD::Image($width, $height);
@bounds2 = $im->stringFT($fg, $font, $pt, $rot, $xpos, $ypos, $text);
</code>

For the images I had atteched, I doubled the height and width, and drew lines with the bounds returned by the second call to stringFT.

I've never seen descending bits clipped (j's and g's), only the far right of right-leaning or fancy fonts.

 - Colen


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More information can be found at the following URL:
http://bugs.libgd.org/?do=details&task_id=80#comment233

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