fpdf 多单元控制

Question

我正在使用 fpdf 生成报告，但我需要多单元格的字段之一，因为内容可能只有几行。下面是现在发生的代码，多单元格将只有几行长，但其余部分将只有一个标准尺寸，多单元格之后的内容将在下一行。那么如何克服所有这些问题

$row_height = 5; // set the default             
$column_width = 15;

$number_of_lines = ceil( $pdf->GetStringWidth($eventMessage) / ($column_width - 1) );
$cell_height = 5; 
$height_of_cell = ceil( $number_of_lines * $cell_height ); 
if ( $cell_height > $row_height ) {
 $row_height = $cell_height;
}  

$pdf->Cell( 10, $row_height,$count, 1, 0, 'L', true );
$pdf->Cell( 15, $row_height,$row['latitude'], 1, 0, 'L', true );
$pdf->Cell( 16, $row_height,$row['longitude'], 1, 0, 'L', true );
$pdf->Cell( 25, $row_height,$row['dateTimer'], 1, 0, 'L', true );
$pdf->Cell( 25, $row_height,$row['insertDateTime'], 1, 0, 'L', true );

$pdf->MultiCell( 15, $row_height,$eventMessage, 1, 'J',true);
$pdf->Cell( 15, $row_height,$eventSource, 1, 0, 'L', true );
$pdf->Cell( 15, $row_height,$eventLocation, 1, 0, 'L', true );
$pdf->Cell( 18, $row_height,$row['stat'], 1, 0, 'L', true );

Answer 1

class pdf extends FPDF {
  function GetMultiCellHeight($w, $h, $txt, $border=null, $align='J') {
    // Calculate MultiCell with automatic or explicit line breaks height
    // $border is un-used, but I kept it in the parameters to keep the call
    //   to this function consistent with MultiCell()
    $cw = &$this->CurrentFont['cw'];
    if($w==0)
        $w = $this->w-$this->rMargin-$this->x;
    $wmax = ($w-2*$this->cMargin)*1000/$this->FontSize;
    $s = str_replace("\r",'',$txt);
    $nb = strlen($s);
    if($nb>0 && $s[$nb-1]=="\n")
        $nb--;
    $sep = -1;
    $i = 0;
    $j = 0;
    $l = 0;
    $ns = 0;
    $height = 0;
    while($i<$nb)
    {
        // Get next character
        $c = $s[$i];
        if($c=="\n")
        {
            // Explicit line break
            if($this->ws>0)
            {
                $this->ws = 0;
                $this->_out('0 Tw');
            }
            //Increase Height
            $height += $h;
            $i++;
            $sep = -1;
            $j = $i;
            $l = 0;
            $ns = 0;
            continue;
        }
        if($c==' ')
        {
            $sep = $i;
            $ls = $l;
            $ns++;
        }
        $l += $cw[$c];
        if($l>$wmax)
        {
            // Automatic line break
            if($sep==-1)
            {
                if($i==$j)
                    $i++;
                if($this->ws>0)
                {
                    $this->ws = 0;
                    $this->_out('0 Tw');
                }
                //Increase Height
                $height += $h;
            }
            else
            {
                if($align=='J')
                {
                    $this->ws = ($ns>1) ? ($wmax-$ls)/1000*$this->FontSize/($ns-1) : 0;
                    $this->_out(sprintf('%.3F Tw',$this->ws*$this->k));
                }
                //Increase Height
                $height += $h;
                $i = $sep+1;
            }
            $sep = -1;
            $j = $i;
            $l = 0;
            $ns = 0;
        }
        else
            $i++;
    }
    // Last chunk
    if($this->ws>0)
    {
        $this->ws = 0;
        $this->_out('0 Tw');
    }
    //Increase Height
    $height += $h;

    return $height;
  }
}

所以

$pdf = new pdf();
$pdf->addPage();
$pdf->MultiCell(50, 4, 'Bla bla bla');
$pdf->ln(GetMultiCellHeight(50, 4, 'Bla bla bla'));
$pdf->Output();