I'm using FPDF to create PDFs and am inserting a jpg image into the PDF document. Is there a way I can import the JPG with a white background but make it a transparent background?
Here's the code used to insert a JPG:
function _parsejpg($file)
{
//Extract info from a JPEG file
$a=GetImageSize($file);
if(!$a)
$this->Error('Missing or incorrect image file: '.$file);
if($a[2]!=2)
$this->Error('Not a JPEG file: '.$file);
if(!isset($a['channels']) || $a['channels']==3)
$colspace='DeviceRGB';
elseif($a['channels']==4)
$colspace='DeviceCMYK';
else
$colspace='DeviceGray';
$bpc=isset($a['bits']) ? $a['bits'] : 8;
//Read whole file
$f=fopen($file,'rb');
$data='';
while(!feof($f))
$data.=fread($f,4096);
fclose($f);
return array('w'=>$a[0],'h'=>$a[1],'cs'=>$colspace,'bpc'=>$bpc,'f'=>'DCTDecode','data'=>$data);
}
