Edit report at http://bugs.php.net/bug.php?id=51207&edit=1
ID: 51207
User updated by: penkert at yahoo dot com
Reported by: penkert at yahoo dot com
-Summary: horizontal misalignment of characters extending beyond
their left margin
+Summary: imageTTFText: misalignment of characters which extend
beyond their left margin
Status: Open
Type: Bug
Package: GD related
Operating System: Linux & Windows XP
PHP Version: 5.2.13
New Comment:
Sorry, I forgot to mention I'm talking about PHP's imageTTFText
function.
And also, while previewing and editing my report the part of my last
paragraph after the apostrophe got lost. So here it is again:
My little test script spells out the word "Information" in "Pirouette
Text". In this font the letter "f" (among others) is made up of a large
S-like curve extending well into its neighboring letters' "territories".
PHP 5.2.11 places the "f" correctly. PHP 5.2.13, on the other hand,
seems to use the character's leftmost extremum for positioning it next
to the previous character which is, of course, incorrect. There are a
few more minor differences between the two PHP version's results----all
in favor of 5.2.11.
Previous Comments:
------------------------------------------------------------------------
[2010-03-05 01:28:10] penkert at yahoo dot com
Description:
------------
The following bug is present in PHP 5.2.13 and was not present in PHP
5.2.11. (It was probably introduced while attempting to solve Bug
#49600.) My test bed is Windows XP/Apache 2.0, production site runs on
Linux/Apache 1.3, both are showing the same symptom.
We are using the commercial font "Pirouette Text" by Linotype which I
obviously cannot include in this report. What sets this font apart from
most other fonts is the fact that some characters extend horizontally
beyond their bounding boxes in terms of character placement.
My little test script spells out the word "Information" in "Pirouette
Text". In this font the letter "f" (among others) is made up of a large
S-like curve extending well into its neighboring letters
Test script:
---------------
$text = "Information";
$font = "pirouette.otf";
$size = 41;
$dim = imagettfbbox($size, 0, $font, $text);
$off_y = -$dim[7];
$off_x = -$dim[0];
$img_h = $dim[1]+$off_y+1;
$img_w = $dim[2]+$off_x+2;
unset($dim);
$img = imagecreatetruecolor($img_w, $img_h);
imagefilledrectangle($img, 0, 0, $img_w-1, $img_h-1, 0xFFFFFF);
imagettftext($img, $size, 0, $off_x, $off_y, 0x000000, $font, $text);
header("Content-Type: image/gif");
imagetruecolortopalette($img, false, 32);
imagegif($img);
imagedestroy($img);
Expected result:
----------------
This is what it should look like (rendered by PHP 5.2.11):
http://mitglieder.hrc1880.de/penkert/php5_2_11.gif
Actual result:
--------------
And this is how PHP 5.2.13 messes it up:
http://mitglieder.hrc1880.de/penkert/php5_2_13.gif
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/bug.php?id=51207&edit=1
