Missing rotated text in PDF created via FPDF

Question

Hi guys,
I have a weird problem which is preventing some rotated text to be viewed in adobe reader, while every other reader like foxit, google pdf viewer and scrib are doing just fine!
if you create a flyer using following link
http://www.erupert.ca/classifieds/create_flyer/ad/32_1306248214
the generated PDF displays just fine in google document viewer but if I download and open the same in Adobe reader the pull tab text (text rorated 90 degrees) vanish, again the PDF is just fine in foxit reader as well!
What am I doing wrong, any ideas would be much appriciated.
Also here is the code to rotate text I'm using by extending the FPDF class
function Rotate($angle,$x=-1,$y=-1)
if($x==-1) $x=$this->x;
        if($y==-1) $y=$this->y; //echo "{$this->x} - {$this->y}";die();
        if($angle!=0) $this->_out('Q');
        $angle=$angle;
        if($angle!=0)
$angle*=M_PI/180;
$c=cos($angle);
$s=sin($angle);
$cx=$x*$this->k;
$cy=($this->h-$y)*$this->k;
$this->_out(sprintf('q %.5f %.5f %.5f %.5f %.2f %.2f cm 1 0 0 1 %.2f %.2f cm',$c,$s,-$s,$c,$cx,$cy,-$cx,-$cy));
OS: Windows Any ( >= XP)
Adobe version X (latest updates)
Thanks,
Anupam

Answer 1

Hello anupam,
I know this is a particularly old thread, however i thought i'd post the solution here for others who may have been searching around for a solution to this very same problem and come across this thread.
As George has correctly stated it is an issue with the unbalanced q and Q operators. I recognise the provided piece of code, it is of course a snippet from a generation class such as FPDF or TCPDF or HTML2PDF, the error occurs when the rotation is not returned to 0 before finalising the document.
i.e. You would have used something like $pdf -> Rotate(270,60,50) or $this -> Rotate(270,60,50) where 270=the degree of rotation , 60=the x coordinate , 50=the y coordinate.
Once you've completed writing all your text, lines, images, cells you need to make sure to reset the rotate i.e. $pdf -> Rotate(0) prior to Outputting the pdf to screen or saving it as a file.