AddExtGState(array('ca'=>$alpha, 'CA'=>$alpha, 'BM'=>'/'.$bm)); $this->SetExtGState($gs); } function AddExtGState($parms) { $n = count($this->extgstates)+1; $this->extgstates[$n]['parms'] = $parms; return $n; } function SetExtGState($gs) { $this->_out(sprintf('/GS%d gs', $gs)); } function _enddoc() { if(!empty($this->extgstates) && $this->PDFVersion<'1.4') $this->PDFVersion='1.4'; parent::_enddoc(); } function _putextgstates() { for ($i = 1; $i <= count($this->extgstates); $i++) { $this->_newobj(); $this->extgstates[$i]['n'] = $this->n; $this->_put('<extgstates[$i]['parms']; $this->_put(sprintf('/ca %.3F', $parms['ca'])); $this->_put(sprintf('/CA %.3F', $parms['CA'])); $this->_put('/BM '.$parms['BM']); $this->_put('>>'); $this->_put('endobj'); } } function _putresourcedict() { parent::_putresourcedict(); $this->_put('/ExtGState <<'); foreach($this->extgstates as $k=>$extgstate) $this->_put('/GS'.$k.' '.$extgstate['n'].' 0 R'); $this->_put('>>'); } function _putresources() { $this->_putextgstates(); parent::_putresources(); } } ?>