Exemplo n.º 1
0
 public function CircularText(\PhpSigep\Pdf\ImprovedFPDF $pdf, $x, $y, $r, $text, $align = 'top', $kerning = 120, $fontwidth = 100)
 {
     $transf = new Transform();
     $kerning /= 100;
     $fontwidth /= 100;
     if ($kerning == 0) {
         $pdf->Error('Please use values unequal to zero for kerning');
     }
     if ($fontwidth == 0) {
         $pdf->Error('Please use values unequal to zero for font width');
     }
     //get width of every letter
     $t = 0;
     for ($i = 0; $i < strlen($text); $i++) {
         $w[$i] = $pdf->GetStringWidth($text[$i]);
         $w[$i] *= $kerning * $fontwidth;
         //total width of string
         $t += $w[$i];
     }
     //circumference
     $u = $r * 2 * M_PI;
     //total width of string in degrees
     $d = $t / $u * 360;
     $transf->StartTransform($pdf);
     // rotate matrix for the first letter to center the text
     // (half of total degrees)
     if ($align == 'top') {
         $transf->Rotate($pdf, $d / 2, $x, $y);
     } else {
         $transf->Rotate($pdf, -$d / 2, $x, $y);
     }
     //run through the string
     for ($i = 0; $i < strlen($text); $i++) {
         if ($align == 'top') {
             //rotate matrix half of the width of current letter + half of the width of preceding letter
             if ($i == 0) {
                 $transf->Rotate($pdf, -($w[$i] / 2 / $u) * 360, $x, $y);
             } else {
                 $transf->Rotate($pdf, -(($w[$i] / 2 + $w[$i - 1] / 2) / $u) * 360, $x, $y);
             }
             if ($fontwidth != 1) {
                 $transf->StartTransform($pdf);
                 $transf->ScaleX($pdf, $fontwidth * 100, $x, $y);
             }
             $pdf->SetXY($x - $w[$i] / 2, $y - $r);
         } else {
             //rotate matrix half of the width of current letter + half of the width of preceding letter
             if ($i == 0) {
                 $transf->Rotate($pdf, $w[$i] / 2 / $u * 360, $x, $y);
             } else {
                 $transf->Rotate($pdf, ($w[$i] / 2 + $w[$i - 1] / 2) / $u * 360, $x, $y);
             }
             if ($fontwidth != 1) {
                 $transf->StartTransform($pdf);
                 $transf->ScaleX($pdf, $fontwidth * 100, $x, $y);
             }
             $pdf->SetXY($x - $w[$i] / 2, $y + $r - $pdf->FontSize);
         }
         $pdf->Cell($w[$i], $pdf->FontSize, $text[$i], 0, 0, 'C');
         if ($fontwidth != 1) {
             $transf->StopTransform($pdf);
         }
     }
     $transf->StopTransform($pdf);
 }