/**
* Generates a QrCode.
*
* @param string $text The text to be converted into a QrCode
* @param null|string $filename The filename and path to save the QrCode file
*
* @return string|void Returns a QrCode string depending on the format, or saves to a file.
*/
public function generate($text, $filename = null)
{
$qrCode = $this->writer->writeString($text, $this->encoding, $this->errorCorrection);
if ($this->imageMerge !== null) {
$merger = new ImageMerge(new Image($qrCode), new Image($this->imageMerge));
$qrCode = $merger->merge($this->imagePercentage);
}
if ($filename === null) {
return $qrCode;
} else {
file_put_contents($filename, $qrCode);
}
}
/**
* @expectedException InvalidArgumentException
*/
public function test_it_throws_an_exception_when_percentage_is_greater_than_1()
{
$this->testImage->merge(1.1);
}
