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Rotations
InformationsAuthor: Olivier
License: Freeware
DescriptionThis script allows to perform a rotation around a given center.
The method to set a rotation is:
function Rotate(float angle [, float x [, float y]])
angle: angle in degrees.
x: abscissa of the rotation center. Default value: current position.
y: ordinate of the rotation center. Default value: current position.
The rotation affects all elements which are printed after the method call (with the exception of
the clickable areas).
Remarks:
- Only the display is altered. The GetX() and GetY() methods are not affected, nor the automatic
page break mechanism.
- Rotation is not kept from page to page. Each page begins with a null rotation.
Source
<?php
require('fpdf.php');
class PDF_Rotate extends FPDF
{
var $angle=0;
function Rotate($angle, $x=-1, $y=-1)
{
if($x==-1)
$x=$this->x;
if($y==-1)
$y=$this->y;
if($this->angle!=0)
$this->_out('Q');
$this->angle=$angle;
if($angle!=0)
{
$angle*=M_PI/180;
$c=cos($angle);
$s=sin($angle);
$cx=$x*$this->k;
$cy=($this->h-$y)*$this->k;
$this->_out(sprintf('q %.5f %.5f %.5f %.5f %.2f %.2f cm 1 0 0 1 %.2f %.2f cm', $c, $s, -$s, $c, $cx, $cy, -$cx, -$cy));
}
}
function _endpage()
{
if($this->angle!=0)
{
$this->angle=0;
$this->_out('Q');
}
parent::_endpage();
}
}
?>
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ExampleHere's an example which defines the utility methods RotatedText() and RotatedImage() and uses
them to print a text and an image rotated to 45°.
<?php
define('FPDF_FONTPATH', 'font/');
require('rotation.php');
class PDF extends PDF_Rotate
{
function RotatedText($x, $y, $txt, $angle)
{
//Text rotated around its origin
$this->Rotate($angle, $x, $y);
$this->Text($x, $y, $txt);
$this->Rotate(0);
}
function RotatedImage($file, $x, $y, $w, $h, $angle)
{
//Image rotated around its upper-left corner
$this->Rotate($angle, $x, $y);
$this->Image($file, $x, $y, $w, $h);
$this->Rotate(0);
}
}
$pdf=new PDF();
$pdf->AddPage();
$pdf->SetFont('Arial', '', 20);
$pdf->RotatedImage('circle.png', 85, 60, 40, 16, 45);
$pdf->RotatedText(100, 60, 'Hello!', 45);
$pdf->Output();
?>
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View the result here.
DownloadZIP | TGZ
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