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<?php
namespace Barcode;
use Barcode\Exceptions\BarcodeException;
class BarcodeGeneratorPNG extends BarcodeGenerator
{
/**
* 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 $color RGB (0-255) foreground color for bar elements (background is transparent).
* @return string image data or false in case of error.
* @public
*/
public function getBarcode($fileName, $code, $type, $widthFactor = 2, $totalHeight = 30, $color = array(0, 0, 0))
{
$barcodeData = $this->getBarcodeData($code, $type);
if($barcodeData===false) return false;
// calculate image size
$width = ($barcodeData['maxWidth'] * $widthFactor);
$height = $totalHeight;
if (function_exists('imagecreate')) {
// GD library
$imagick = false;
$png = imagecreate($width, $height);
$colorBackground = imagecolorallocate($png, 255, 255, 255);
//imagecolortransparent($png, $colorBackground);
$colorForeground = imagecolorallocate($png, $color[0], $color[1], $color[2]);
} elseif (extension_loaded('imagick')) {
$imagick = true;
$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);
} else {
throw new BarcodeException('Neither gd-lib or imagick are installed!');
}
// 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 / $barcodeData['maxHeight']), 3);
// draw a vertical bar
if ($imagick && isset($imageMagickObject)) {
$imageMagickObject->rectangle($positionHorizontal, $y, ($positionHorizontal + $bw), ($y + $bh));
} else {
imagefilledrectangle($png, $positionHorizontal, $y, ($positionHorizontal + $bw) - 1, ($y + $bh),
$colorForeground);
}
}
$positionHorizontal += $bw;
}
//ob_start();
if ($imagick && isset($imageMagickObject)) {
$png->drawImage($imageMagickObject);
$png->writeImage($fileName);
//echo $png;
} else {
imagepng($png, $fileName, 9);
imagedestroy($png);
}
//$image = ob_get_clean();
//return $image;
return true;
}
}