[JAVA] Desktop: OpenCV Input Chinese Word

Goal

OpenCV_Input_Chinese_Word.java

import org.opencv.core.Core;
import org.opencv.core.CvType;
import org.opencv.core.Mat;
import org.opencv.core.Scalar;
import org.opencv.imgproc.Imgproc;

import javax.swing.*;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.IOError;
import java.io.IOException;
import org.opencv.core.Point;

public class OpenCV_Input_Chinese_Word {

    static {System.loadLibrary(Core.NATIVE_LIBRARY_NAME);}
    private JFrame frmjavaSwing;

    /**
     *  Launch the application.
     */
    public static void main(String[] args){

        EventQueue.invokeLater(new Runnable() {
            @Override
            public void run() {
                try{
                    OpenCV_Input_Chinese_Word window = new OpenCV_Input_Chinese_Word();
                    window.frmjavaSwing.setVisible(true);
                }catch (Exception e){
                    e.printStackTrace();
                }
            }
        });
    }

    public OpenCV_Input_Chinese_Word() throws IOException{
        init();
    }

    /**
     *  Init the contents of the frame.
     * @throws IOException
     */

    private void  init() throws  IOException{
        Mat src = paint();
        BufferedImage image=matToBufferedImage(src);
        showAllFontName();

        Graphics2D g2d = image.createGraphics();
        g2d.setColor(new Color(0,0,0));//Character color
        g2d.setFont(new Font("Wang Han Sect Steel Fountain Pen", 36, 20));//Character type,Character typestyle,Large and small
        //g2d.setFont(new Font("Wang Han Sokantei Ryusei", 36, 20));//Character type,Character typestyle,Large and small
        g2d.drawString("I love OpenCV,Refueling!", 10,230);//Character position



        frmjavaSwing = new JFrame();
        frmjavaSwing.setTitle("opencv Import Chinese sentence practice");
        frmjavaSwing.setBounds(100, 100, 377, 356);
        frmjavaSwing.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frmjavaSwing.getContentPane().setLayout(null);

        final JLabel lblNewLabel = new JLabel("");
        lblNewLabel.setBounds(10, 37, 296, 255);
        lblNewLabel.setIcon(new ImageIcon(image));
        frmjavaSwing.getContentPane().add(lblNewLabel);

    }

    public Mat paint(){

        Mat source = new Mat(250,250, CvType.CV_8UC3, new Scalar(255,255,255));

        Imgproc.putText(source,new String("I love Opencv"), new Point(125,25), 0, 0.5, new Scalar(255, 0, 0));
        Imgproc.putText(source,new String("I love Opencv"), new Point(125,50), 1, 0.5, new Scalar(255, 0, 0));
        Imgproc.putText(source,new String("I love Opencv"), new Point(125,75), 2, 0.5, new Scalar(255, 0, 0));
        Imgproc.putText(source,new String("I love Opencv"), new Point(125,100), 3, 0.5, new Scalar(255, 0, 0));
        Imgproc.putText(source,new String("I love Opencv"), new Point(125,125), 4, 0.5, new Scalar(255, 0, 0));
        Imgproc.putText(source,new String("I love Opencv"), new Point(125,150), 5, 0.5, new Scalar(255, 0, 0));
        Imgproc.putText(source,new String("I love Opencv"), new Point(125,175), 6, 0.5, new Scalar(255, 0, 0));
        Imgproc.putText(source,new String("I love Opencv"), new Point(125,200), 7, 0.5, new Scalar(255, 0, 0));
        return source;
    }

    public BufferedImage matToBufferedImage(Mat matrix) {
        int cols = matrix.cols();
        int rows = matrix.rows();
        int elemSize = (int)matrix.elemSize();
        byte[] data = new byte[cols * rows * elemSize];
        int type;
        matrix.get(0, 0, data);
        switch (matrix.channels()) {
            case 1:
                type = BufferedImage.TYPE_BYTE_GRAY;
                break;
            case 3:
                type = BufferedImage.TYPE_3BYTE_BGR;
                // bgr to rgb
                byte b;
                for(int i=0; i<data.length; i=i+3) {
                    b = data[i];
                    data[i] = data[i+2];
                    data[i+2] = b;
                }
                break;
            default:
                return null;
        }
        BufferedImage image2 = new BufferedImage(cols, rows, type);
        image2.getRaster().setDataElements(0, 0, cols, rows, data);
        return image2;
    }

    //Character type name owned by the sword
    public void showAllFontName(){
        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
        Font[] allFont=    ge.getAllFonts();

        for(int i=0;i<allFont.length;i++){
            System.out.println("Character type name owned by the sword:"+allFont[i].getFontName());
        }
    }

}

Result