JarCastingThis is a simple qrcode builder that is copied from https://github.com/skrymer/qrbuilder
QRCodeBuilder
The builder is very simple to use, as the following example will shows.
Add the following dependency in pom.xml.
<!-- replace here with the latest version -->
<dependency>
<groupId>club.lemos</groupId>
<artifactId>qrbuilder</artifactId>
<version>1.0.1</version>
</dependency>
Create a QRCode with dimensions 250*250, a image overlay and some data:
public class Main {
public static final float TRANSPARENCY = 0.20f;
public static final float OVERLAY_RATIO = 1f;
public static final int WIDTH = 250;
public static final int HEIGHT = 250;
public static void main(String[] args) throws Exception {
QRCode.ZXingBuilder.build(builder ->
builder
.withSize(WIDTH, HEIGHT)
.and()
.withData(loremIpsum)
.and()
.withDecorator(ColoredQRCode.colorizeQRCode(Color.green.darker()))
.and()
.withDecorator(ImageOverlay.addImageOverlay(readImage("src/test/resources/images/skull_bw.png"), TRANSPARENCY, OVERLAY_RATIO))
.and()
.withCharSet(StandardCharsets.UTF_8)
.verify(true)
).toFile("./qrCode.png", "PNG");
}
public static BufferedImage readImage(String path) {
try {
return ImageIO.read(new File(path));
} catch (IOException e) {
throw new RuntimeException(e);
}
}
private static final String loremIpsum = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam scelerisque dictum ipsum, mollis faucibus neque. Vestibulum suscipit eu urna eget lobortis.";
}
The following qrCode is then generated:
Decorators
The builder uses the decorators to decorate(obviously) the generated QRCode.
Decorators currently available:
- ImageOverlay
- ColoredQRCode
You can create new Decorators by implementing the Decorator interface