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Clipping
InformationsAuthor: Andreas Würmser
License: Freeware
DescriptionThis script allows to define a clipping area. A clipping area restricts the display and
prevents any elements from showing outside of it.
3 shapes are available: text, rectangle and ellipse. For each one, you can choose whether
to draw the outline or not.
ClippingText(float x, float y, string txt [, boolean outline])
ClippingRect(float x, float y, float w, float h [, boolean outline])
ClippingEllipse(float x, float y, float rx, float ry [, boolean outline])
The default value of outline is false.
Once you have finished using the clipping, you must remove it with UnsetClipping().
Additionally, a clipped version of Cell() is provided:
ClippedCell(double w [, double h [, string txt [, mixed border [, int ln [, string align[, int fill [, mixed link]]]]]]])
Source
<?php
require('fpdf.php');
class PDF_Clipping extends FPDF
{
function ClippingText($x, $y, $txt, $outline=false)
{
$op=$outline ? 5 : 7;
$this->_out(sprintf('q BT %.2f %.2f Td %d Tr (%s) Tj 0 Tr ET',
$x*$this->k,
($this->h-$y)*$this->k,
$op,
$this->_escape($txt)));
}
function ClippingRect($x, $y, $w, $h, $outline=false)
{
$op=$outline ? 'S' : 'n';
$this->_out(sprintf('q %.2f %.2f %.2f %.2f re W %s',
$x*$this->k,
($this->h-$y)*$this->k,
$w*$this->k, -$h*$this->k,
$op));
}
function ClippingEllipse($x, $y, $rx, $ry, $outline=false)
{
$op=$outline ? 'S' : 'n';
$lx=4/3*(M_SQRT2-1)*$rx;
$ly=4/3*(M_SQRT2-1)*$ry;
$k=$this->k;
$h=$this->h;
$this->_out(sprintf('q %.2f %.2f m %.2f %.2f %.2f %.2f %.2f %.2f c',
($x+$rx)*$k, ($h-$y)*$k,
($x+$rx)*$k, ($h-($y-$ly))*$k,
($x+$lx)*$k, ($h-($y-$ry))*$k,
$x*$k, ($h-($y-$ry))*$k));
$this->_out(sprintf('%.2f %.2f %.2f %.2f %.2f %.2f c',
($x-$lx)*$k, ($h-($y-$ry))*$k,
($x-$rx)*$k, ($h-($y-$ly))*$k,
($x-$rx)*$k, ($h-$y)*$k));
$this->_out(sprintf('%.2f %.2f %.2f %.2f %.2f %.2f c',
($x-$rx)*$k, ($h-($y+$ly))*$k,
($x-$lx)*$k, ($h-($y+$ry))*$k,
$x*$k, ($h-($y+$ry))*$k));
$this->_out(sprintf('%.2f %.2f %.2f %.2f %.2f %.2f c W %s',
($x+$lx)*$k, ($h-($y+$ry))*$k,
($x+$rx)*$k, ($h-($y+$ly))*$k,
($x+$rx)*$k, ($h-$y)*$k,
$op));
}
function UnsetClipping()
{
$this->_out('Q');
}
function ClippedCell($w, $h=0, $txt='', $border=0, $ln=0, $align='', $fill=0, $link='')
{
if($border || $fill || $this->y+$h>$this->PageBreakTrigger)
{
$this->Cell($w, $h, '', $border, 0, '', $fill);
$this->x-=$w;
}
$this->ClippingRect($this->x, $this->y, $w, $h);
$this->Cell($w, $h, $txt, '', $ln, $align, 0, $link);
$this->UnsetClipping();
}
}
?>
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Example
<?php
require('clipping.php');
$pdf = new PDF_Clipping();
$pdf->AddPage();
//example of clipped cell
$pdf->SetFont('Arial', '', 14);
$pdf->SetX(72);
$pdf->ClippedCell(60, 6, 'These are clipping examples', 1);
//example of clipping text
$pdf->SetFont('Arial', 'B', 120);
//set the outline color
$pdf->SetDrawColor(0);
//set the outline width (note that only its outer half will be shown)
$pdf->SetLineWidth(2);
//draw the clipping text
$pdf->ClippingText(40, 55, 'CLIPS', true);
//fill it with the image
$pdf->Image('clips.jpg', 40, 10, 130);
//remove the clipping
$pdf->UnsetClipping();
//example of clipping rectangle
$pdf->ClippingRect(45, 65, 116, 20, true);
$pdf->Image('clips.jpg', 40, 10, 130);
$pdf->UnsetClipping();
//example of clipping ellipse
$pdf->ClippingEllipse(102, 104, 16, 10, true);
$pdf->Image('clips.jpg', 40, 10, 130);
$pdf->UnsetClipping();
$pdf->Output();
?>
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View the result here.
DownloadZIP | TGZ
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