Android Open Source - Android-NFC-WiFi-Controller Custom Q R Code

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Back to project page Android-NFC-WiFi-Controller.

License

The source code is released under:

MIT License

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Java Source Code

package sanchezsobrino.multimedia.anwc.business;
/* ww w  . ja v  a 2 s . c om*/
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.IOException;

import javax.imageio.ImageIO;
import javax.swing.ImageIcon;

import net.glxn.qrgen.QRCode;

public class CustomQRCode {
  private final Color red_color = new Color(0xffdd0000);
  private final Color green_color = new Color(0xff009900);
  
  private BufferedImage raw_qr_code;
  private ImageIcon red_qr_code;
  private ImageIcon green_qr_code;
  
  public CustomQRCode(String str, int width, int height) throws IOException {
    raw_qr_code = ImageIO.read(QRCode.from(str).withSize(width, height).file());
    red_qr_code = new ImageIcon(replaceColor(raw_qr_code, Color.black, red_color));
    green_qr_code = new ImageIcon(replaceColor(raw_qr_code, Color.black, green_color));
  }
  
  public ImageIcon getRedQRCode() {
    return red_qr_code;
  }
  
  public ImageIcon getGreenQRCode() {
    return green_qr_code;
  }
  
  private BufferedImage replaceColor(BufferedImage image, Color src, Color dst) {
    BufferedImage copy = new BufferedImage(image.getWidth(), image.getHeight(), BufferedImage.TYPE_INT_ARGB);
    Graphics2D g = copy.createGraphics();
    g.drawRenderedImage(image, null);
    g.dispose();

    for (int i = 0; i < copy.getHeight(); i++) {
      for (int j = 0; j < copy.getWidth(); j++) {
        Color rgb = new Color(copy.getRGB(i, j));
        if (src.equals(rgb)) {
          copy.setRGB(i, j, dst.getRGB());
        } else {
          copy.setRGB(i, j, Color.TRANSLUCENT);
        }
      }
    }

    return copy;
  }
}

Java Source Code List