/**
* Return a PNG image representation of barcode (requires GD or Imagick library).
*
* @param string $code code to print
* @param string $type type of barcode:
* @param int $widthFactor Width of a single bar element in pixels.
* @param int $totalHeight Height of a single bar element in pixels.
* @param array $color RGB (0-255) foreground color for bar elements (background is transparent).
* @return \Imagick imagick object with barcode
* @public
*/
public function getBarcode($code, $type, $widthFactor = 2, $totalHeight = 30, $color = array(0, 0, 0))
{
$barcodeData = $this->getBarcodeData($code, $type);
// calculate image size
$width = $barcodeData['maxWidth'] * $widthFactor;
$height = $totalHeight;
$colorForeground = new \imagickpixel('rgb(' . $color[0] . ',' . $color[1] . ',' . $color[2] . ')');
$png = new \Imagick();
$png->newImage($width, $height, 'none', 'png');
$imageMagickObject = new \imagickdraw();
$imageMagickObject->setFillColor($colorForeground);
$imageMagickObject->setStrokeAntialias(false);
$imageMagickObject->setStrokeColor('rgb(255,255,255)');
// print bars
$positionHorizontal = 0;
foreach ($barcodeData['bars'] as $bar) {
$bw = round($bar['width'] * $widthFactor, 3);
$bh = round($bar['height'] * $totalHeight / $barcodeData['maxHeight'], 3);
if ($bar['drawBar']) {
$y = round($bar['positionVertical'] * $totalHeight / $barcodeData['maxHeight'], 3);
// draw a vertical bar
$imageMagickObject->rectangle($positionHorizontal, $y, $positionHorizontal + $bw, $y + $bh);
}
$positionHorizontal += $bw;
}
$png->drawImage($imageMagickObject);
return $png;
}