Home » Images » Image_Graph » Bug #2791

[2004-11-19 09:09 UTC] pawel at money dot pl

Description:
------------
Labels for the x-axis are beeing displayed just ON the axis, when I use ttf font. It's not better, when the angle of font is changed (it looks really bad at 270)

Reproduce code:
---------------
<?php
require 'Image/Graph.php';
$graph =& Image_Graph::factory('graph', array(400, 300));
$font =& $graph->addNew('ttf_font', 'arial.ttf');
$font->setSize(9);
$font->setAngle(0);
$dataset =& Image_Graph::factory('dataset');
$dataset->addPoint('Denmark ', 10);
$dataset->addPoint('Norway ', 3);
$dataset->addPoint('Sweden ', 8);
$dataset->addPoint('Finland ', 5);
$plotarea =& $graph->addNew('plotarea');
$ax =& $plotarea->getAxis(IMAGE_GRAPH_AXIS_X);
$ax->setFont($font);
$plot =&$plotarea->addNew('line', &$dataset);
$graph->done();
?>

Expected result:
----------------
Placement of labels should be equal to this represented by the default font

[2004-11-19 09:42 UTC] pear dot nosey at veggerby dot dk

Granted there is a problem when angling the font at 270 deg, at 0 deg. my Windows box shows if correctly. I wonder if the FreeType for your linux box (or in general) doesn't report the bounds using ImageTTFBox correctly (which I used for placing the font at the right pos)?

Could you please test the following:

var_dump(imagettfbbox(9, 0, 'arial.ttf', 'Denmark'));
var_dump(imagettfbbox(9, 270, 'arial.ttf', 'Denmark'));

Thanks...

[2004-11-19 09:59 UTC] pawel at money dot pl

here is the result:
array(8) {
[0]=>
int(-1)
[1]=>
int(0)
[2]=>
int(49)
[3]=>
int(0)
[4]=>
int(49)
[5]=>
int(-11)
[6]=>
int(-1)
[7]=>
int(-11)
}
array(8) {
[0]=>
int(-2)
[1]=>
int(-1)
[2]=>
int(-2)
[3]=>
int(49)
[4]=>
int(9)
[5]=>
int(49)
[6]=>
int(9)
[7]=>
int(-1)
}

Let me know if You want me to send an image that my script generates.

[2004-11-19 10:41 UTC] pear dot nosey at veggerby dot dk

Your output from ImageTTFbox resembles my results very much (+-2) so that is not the problem. I have looked at it, and have found a problem, which I'll fix ASAP (it is working in my internal-dev-version, not available on CVS though since the PHP guys haven't granted me CVS access yet :)!)