GDLIB Transparency

[Staggan]

Hello

 

I have looked at numerous posts on this but I seem unable to get it to work....

 

I trying to make the background to a generated PNG transparent... below is the code

 

 

 
 $dimensions = $this->getDimens($fh, $lw, $hpad, $vpad);
        $this->im   = imagecreate($dimensions['x'], $dimensions['y']);
        $bg         = iimagecolorallocate$this->im, 255, 255, 255); // Set background color.
  imagecolortransparent($this->im, $bg);
        $this->tc   = imagecolorallocate($this->im, 0, 0, 0); // Text color.
        $this->mkStr($dimensions['x'] - $hpad - imagefontwidth(LFONT)*strlen($tourName), $dimensions['y'] - $vpad/2, $tourName, LFONT); // Print tournament name.
 

 

 

Currently I just get a black image...

 

Any suggestions would be greatly appreciated

 

Thanks

 

[kicken]

Mark the image to save the alpha channel details using imagesavealpha and set it to true. Then allocate your background color using imagecolorallocatealpha and set the alpha parameter to 127. Floodfill the image using imagefill with the background color, then you should get your transparent background.

Edited July 8, 2013 by kicken

[Staggan]

Hello

 

It still isn't working..

 

My code is now this:

 

 

 
   // Initial calls.
        $dimensions = $this->getDimens($fh, $lw, $hpad, $vpad);
        $this->im   = imagecreate($dimensions['x'], $dimensions['y']);
        $bg         = imagecolorallocate($this->im, 255, 255, 255); // Set background color.
  imagesavealpha($this->im, true);
  imagecolorallocatealpha($this->im, 255, 255, 255, 127);
  imagefill($this->im, 255, 255, 255);
  imagecolortransparent($this->im, $bg);
 

 

I get a white background now.....

 

This page is being shown via an iframe.. and I want the background on the calling page to show through....

 

Am I missing something?

 

Thanks