/**
* Generates the barcode and outputs it as header image/jpg
*
* @return string
*/
public function getBarcode()
{
$code = JFactory::getApplication()->input->get("code", '');
if (empty($code)) {
echo "No code given";
return;
}
$text = 1;
$width = 300;
$height = 50;
header("Content-type: image/png");
$im = ImageCreate($width, $height) or die("Cannot Initialize new GD image stream");
$White = ImageColorAllocate($im, 255, 255, 255);
$Black = ImageColorAllocate($im, 0, 0, 0);
ImageInterLace($im, 1);
$NarrowRatio = 20;
$WideRatio = 55;
$QuietRatio = 35;
$nChars = (strlen($code) + 2) * (6 * $NarrowRatio + 3 * $WideRatio + $QuietRatio);
$Pixels = $width / $nChars;
$NarrowBar = (int) (20 * $Pixels);
$WideBar = (int) (55 * $Pixels);
$QuietBar = (int) (35 * $Pixels);
$ActualWidth = ($NarrowBar * 6 + $WideBar * 3 + $QuietBar) * (strlen($code) + 2);
if ($NarrowBar == 0 || $NarrowBar == $WideBar || $NarrowBar == $QuietBar || $WideBar == 0 || $WideBar == $QuietBar || $QuietBar == 0) {
ImageString($im, 1, 0, 0, "Image is too small!", $Black);
ImagePNG($im);
exit;
}
$CurrentBarX = (int) (($width - $ActualWidth) / 2);
$Color = $White;
$BarcodeFull = "*" . strtoupper($code) . "*";
settype($BarcodeFull, "string");
$FontNum = 3;
$FontHeight = ImageFontHeight($FontNum);
$FontWidth = ImageFontWidth($FontNum);
if ($text != 0) {
$CenterLoc = (int) (($width - 1) / 2) - (int) ($FontWidth * strlen($BarcodeFull) / 2);
ImageString($im, $FontNum, $CenterLoc, $height - $FontHeight, "{$BarcodeFull}", $Black);
} else {
$FontHeight = -2;
}
for ($i = 0; $i < strlen($BarcodeFull); $i++) {
$StripeCode = MatukioHelperUtilsBooking::getCode99($BarcodeFull[$i]);
for ($n = 0; $n < 9; $n++) {
if ($Color == $White) {
$Color = $Black;
} else {
$Color = $White;
}
switch ($StripeCode[$n]) {
case '0':
ImageFilledRectangle($im, $CurrentBarX, 0, $CurrentBarX + $NarrowBar, $height - 1 - $FontHeight - 2, $Color);
$CurrentBarX += $NarrowBar;
break;
case '1':
ImageFilledRectangle($im, $CurrentBarX, 0, $CurrentBarX + $WideBar, $height - 1 - $FontHeight - 2, $Color);
$CurrentBarX += $WideBar;
break;
}
}
$Color = $White;
ImageFilledRectangle($im, $CurrentBarX, 0, $CurrentBarX + $QuietBar, $height - 1 - $FontHeight - 2, $Color);
$CurrentBarX += $QuietBar;
}
ImagePNG($im);
imagedestroy($im);
jexit();
}
