com.ibm.streamsx.edgevideo.device.MyPanel.java Source code

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Here is the source code for com.ibm.streamsx.edgevideo.device.MyPanel.java

Source

/*
# Licensed Materials - Property of IBM
# Copyright IBM Corp. 2017
 */
package com.ibm.streamsx.edgevideo.device;

import java.awt.Graphics;
import java.awt.image.BufferedImage;
import java.awt.image.DataBufferByte;
import java.util.Arrays;

import javax.swing.JFrame;
import javax.swing.JPanel;

import org.opencv.core.Mat;

public class MyPanel extends JPanel {
    private static final long serialVersionUID = 1L;
    private BufferedImage image;

    public static MyPanel newFramedPanel(String title) {
        return newFramedPanel(title, 0, 0);
    }

    public static MyPanel newFramedPanel(String title, int x, int y) {
        return newFramedPanel(title, x, y, 500, 400);
    }

    public static MyPanel newFramedPanel(String title, int x, int y, int width, int height) {
        JFrame frame = new JFrame(title);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(width, height);
        frame.setLocation(x, y);
        MyPanel panel = new MyPanel();
        frame.setContentPane(panel);
        frame.setVisible(true);

        return panel;
    }

    public MyPanel() {
        super();
    }

    public void clear() {
        if (image != null) {
            final byte[] targetPixels = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
            Arrays.fill(targetPixels, (byte) 0);
        }
    }

    public boolean matToBufferedImage(Mat matRGB) {
        return matToBufferedImage(matRGB, BufferedImage.TYPE_3BYTE_BGR);
    }

    public boolean grayMatToBufferedImage(Mat matGray) {
        return matToBufferedImage(matGray, BufferedImage.TYPE_BYTE_GRAY);
    }

    public boolean matToBufferedImage(Mat mat, int bufferedImageType) {
        int width = mat.width(), height = mat.height(), channels = mat.channels();
        byte[] sourcePixels = new byte[width * height * channels];
        mat.get(0, 0, sourcePixels);
        // create new image and get reference to backing data  
        image = new BufferedImage(width, height, bufferedImageType);
        final byte[] targetPixels = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
        System.arraycopy(sourcePixels, 0, targetPixels, 0, sourcePixels.length);
        return true;
    }

    @Override
    public void paintComponent(Graphics g) {
        super.paintComponent(g);
        if (this.image == null)
            return;
        g.drawImage(this.image, 10, 10, 2 * this.image.getWidth(), 2 * this.image.getHeight(), null);
        //g.drawString("This is my custom Panel!",10,20);  
    }
}