Text rotations

Add-On Text rotations

Informations

Author:Pivkin Vladimir
License: FPDF

Description

This extension allows to print rotated and sheared (i.e. distorted like in italic) text.

TextWithDirection(float x, float y, string txt [, string direction])

x: abscissa
y: ordinate
txt: text string
direction: one of the following values (R by default):

R (Right): Left to Right
U (Up): Bottom to Top
D (Down): Top To Bottom
L (Left): Right to Left

TextWithRotation(float x, float y, string txt, float txt_angle [, float font_angle])

x: abscissa
y: ordinate
txt: text string
txt_angle: angle of the text
font_angle: shear angle (0 by default)

Source

<?php
require('fpdf.php');

class RPDF extends FPDF {

function TextWithDirection($x, $y, $txt, $direction='R')
{
    if ($direction=='R')
        $s=sprintf('BT %.2F %.2F %.2F %.2F %.2F %.2F Tm (%s) Tj ET', 1, 0, 0, 1, $x*$this->k, ($this->h-$y)*$this->k, $this->_escape($txt));
    elseif ($direction=='L')
        $s=sprintf('BT %.2F %.2F %.2F %.2F %.2F %.2F Tm (%s) Tj ET', -1, 0, 0, -1, $x*$this->k, ($this->h-$y)*$this->k, $this->_escape($txt));
    elseif ($direction=='U')
        $s=sprintf('BT %.2F %.2F %.2F %.2F %.2F %.2F Tm (%s) Tj ET', 0, 1, -1, 0, $x*$this->k, ($this->h-$y)*$this->k, $this->_escape($txt));
    elseif ($direction=='D')
        $s=sprintf('BT %.2F %.2F %.2F %.2F %.2F %.2F Tm (%s) Tj ET', 0, -1, 1, 0, $x*$this->k, ($this->h-$y)*$this->k, $this->_escape($txt));
    else
        $s=sprintf('BT %.2F %.2F Td (%s) Tj ET', $x*$this->k, ($this->h-$y)*$this->k, $this->_escape($txt));
    if ($this->ColorFlag)
        $s='q '.$this->TextColor.' '.$s.' Q';
    $this->_out($s);
}

function TextWithRotation($x, $y, $txt, $txt_angle, $font_angle=0)
{
    $font_angle+=90+$txt_angle;
    $txt_angle*=M_PI/180;
    $font_angle*=M_PI/180;

    $txt_dx=cos($txt_angle);
    $txt_dy=sin($txt_angle);
    $font_dx=cos($font_angle);
    $font_dy=sin($font_angle);

    $s=sprintf('BT %.2F %.2F %.2F %.2F %.2F %.2F Tm (%s) Tj ET', $txt_dx, $txt_dy, $font_dx, $font_dy, $x*$this->k, ($this->h-$y)*$this->k, $this->_escape($txt));
    if ($this->ColorFlag)
        $s='q '.$this->TextColor.' '.$s.' Q';
    $this->_out($s);
}

}
?>

Example

<?php
require('rpdf.php');

$pdf=new RPDF();
$pdf->AddPage();
$pdf->SetFont('Arial', '', 40);
$pdf->TextWithRotation(50, 65, 'Hello', 45, -45);
$pdf->SetFontSize(30);
$pdf->TextWithDirection(110, 50, 'world!', 'L');
$pdf->TextWithDirection(110, 50, 'world!', 'U');
$pdf->TextWithDirection(110, 50, 'world!', 'R');
$pdf->TextWithDirection(110, 50, 'world!', 'D');
$pdf->Output();
?>

View the result here.

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