PreViewer.java

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

/*
 * Viewer.java
 *
 * Created on 4-Mar-2012, 3:07:06 PM
 */
package webcamstudio.components;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GraphicsConfiguration;
import java.awt.GraphicsDevice;
import java.awt.GraphicsEnvironment;
import java.awt.image.BufferedImage;

/**
 *
 * @author patrick
 */
public class PreViewer extends javax.swing.JPanel {
    GraphicsEnvironment env = GraphicsEnvironment.getLocalGraphicsEnvironment();
    GraphicsDevice device = env.getDefaultScreenDevice();
    GraphicsConfiguration config = device.getDefaultConfiguration();
    private BufferedImage img = config.createCompatibleImage(320, 240, BufferedImage.TYPE_INT_ARGB);
    private int audioLeft = 0;
    private int audioRight=0;

    /** Creates new form Viewer */
    public PreViewer() {
        initComponents();
    }

    public void setImage(BufferedImage image) {
        
        img=image;
        
    }
         
    public void setAudioLevel(int l, int r){
        audioLeft = l;
        audioRight = r;
    }
    @Override
    public void paintComponent(Graphics g) {
        Graphics2D graph = (Graphics2D) g;
        
        graph.setRenderingHint(java.awt.RenderingHints.KEY_INTERPOLATION, 
                               java.awt.RenderingHints.VALUE_INTERPOLATION_BILINEAR);
        graph.setRenderingHint(java.awt.RenderingHints.KEY_RENDERING,
                               java.awt.RenderingHints.VALUE_RENDER_SPEED);
        graph.setRenderingHint(java.awt.RenderingHints.KEY_ANTIALIASING,
                               java.awt.RenderingHints.VALUE_ANTIALIAS_OFF);
        graph.setRenderingHint(java.awt.RenderingHints.KEY_TEXT_ANTIALIASING,
                               java.awt.RenderingHints.VALUE_TEXT_ANTIALIAS_OFF);
        graph.setRenderingHint(java.awt.RenderingHints.KEY_FRACTIONALMETRICS,
                               java.awt.RenderingHints.VALUE_FRACTIONALMETRICS_OFF);
        graph.setRenderingHint(java.awt.RenderingHints.KEY_COLOR_RENDERING,
                               java.awt.RenderingHints.VALUE_COLOR_RENDER_SPEED);
        graph.setRenderingHint(java.awt.RenderingHints.KEY_DITHERING,
                               java.awt.RenderingHints.VALUE_DITHER_DISABLE);

        int w = this.getWidth();
        int h = this.getHeight();
        graph.setBackground(Color.BLACK);
        graph.clearRect(0, 0, w, h);
        if (img != null) {
            int imgWidth = h * img.getWidth() / img.getHeight();
            int border = (w - imgWidth) / 2;
            graph.drawImage(img, border, 0, imgWidth, h, null);
        } else {
            graph.setColor(Color.WHITE);
            graph.drawString("No Image",10,10);
        }
        if (audioLeft > 0 || audioRight > 0){
            graph.setColor(Color.green);
            graph.fillRect(0, h - audioLeft * h / 128, 10, audioLeft * h / 128);
            graph.fillRect(w-10, h - audioRight * h / 128, 10, audioRight * h / 128);
        }
    }

    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    @SuppressWarnings("unchecked")
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
        this.setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 41, Short.MAX_VALUE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGap(0, 39, Short.MAX_VALUE)
        );
    }// </editor-fold>//GEN-END:initComponents
    // Variables declaration - do not modify//GEN-BEGIN:variables
    // End of variables declaration//GEN-END:variables
}