/* * @(#)ImageOps.java	1.23 99/05/07 * * Copyright (c) 1998, 1999 by Sun Microsystems, Inc. All Rights Reserved. *  * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use, * modify and redistribute this software in source and binary code form, * provided that i) this copyright notice and license appear on all copies of * the software; and ii) Licensee does not utilize the software in a manner * which is disparaging to Sun. *  * This software is provided "AS IS," without a warranty of any kind. ALL * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE * POSSIBILITY OF SUCH DAMAGES. *  * This software is not designed or intended for use in on-line control of * aircraft, air traffic, aircraft navigation or aircraft communications; or in * the design, construction, operation or maintenance of any nuclear * facility. Licensee represents and warrants that it will not use or * redistribute the Software for such purposes. */package demos.Images;import java.awt.*;import java.awt.image.*;import java.awt.event.*;import java.awt.geom.AffineTransform;import javax.swing.*;import javax.swing.event.*;import DemoSurface;import DemoPanel;import CustomControls;/** * Images drawn using operators such as ConvolveOp LowPass & Sharpen, * LookupOp and RescaleOp. */public class ImageOps extends DemoSurface implements CustomControls, ChangeListener {    private static String imgName[] = { "bld.jpg", "boat.gif" };    private static BufferedImage img[] = new BufferedImage[imgName.length];    private static String opsName[] = {               "Threshold", "RescaleOp" ,"Invert", "Yellow Invert", "3x3 Blur",               "3x3 Sharpen", "3x3 Edge", "5x5 Edge"};    private static BufferedImageOp biop[] = new BufferedImageOp[opsName.length];    private static int rescaleFactor = 128;    private static float rescaleOffset = 0;    private static int low = 100, high = 200;    private int opsIndex, imgIndex;    private DemoControls controls;     static {        thresholdOp(low, high);        int i = 1;        biop[i++] = new RescaleOp(1.0f, 0, null);        byte invert[] = new byte[256];        byte ordered[] = new byte[256];        for (int j = 0; j < 256 ; j++) {            invert[j] = (byte) (256-j);            ordered[j] = (byte) j;        }        biop[i++] = new LookupOp(new ByteLookupTable(0,invert), null);        byte[][] yellowInvert = new byte[][] { invert, invert, ordered };        biop[i++] = new LookupOp(new ByteLookupTable(0,yellowInvert), null);        int dim[][] = {{3,3}, {3,3}, {3,3}, {5,5}};        float data[][] = { {0.1f, 0.1f, 0.1f,              // 3x3 blur                            0.1f, 0.2f, 0.1f,                            0.1f, 0.1f, 0.1f},                           {-1.0f, -1.0f, -1.0f,           // 3x3 sharpen                            -1.0f, 9.0f, -1.0f,                            -1.0f, -1.0f, -1.0f},                           { 0.f, -1.f,  0.f,                  // 3x3 edge                            -1.f,  5.f, -1.f,                             0.f, -1.f,  0.f},                           {-1.0f, -1.0f, -1.0f, -1.0f, -1.0f,  // 5x5 edge                            -1.0f, -1.0f, -1.0f, -1.0f, -1.0f,                            -1.0f, -1.0f, 24.0f, -1.0f, -1.0f,                            -1.0f, -1.0f, -1.0f, -1.0f, -1.0f,                            -1.0f, -1.0f, -1.0f, -1.0f, -1.0f}};        for (int j = 0; j < data.length; j++, i++) {            biop[i] = new ConvolveOp(new Kernel(dim[j][0],dim[j][1],data[j]));        }    }    protected JSlider slider1, slider2;    public ImageOps() {        setBackground(Color.white);        for (int i = 0; i < imgName.length; i++) {            Image image = getImage(imgName[i]);            int iw = image.getWidth(this);            int ih = image.getHeight(this);            img[i] = new BufferedImage(iw, ih, BufferedImage.TYPE_INT_RGB);            img[i].createGraphics().drawImage(image,0,0,null);        }        controls = new DemoControls(this);    }    public String[] getCustomControlsConstraints() {        return new String[] { BorderLayout.NORTH,                                 BorderLayout.WEST,                                 BorderLayout.EAST };    }    public Component[] getCustomControls() {        slider1 = new JSlider(JSlider.VERTICAL, 0, 255, low);        slider1.setPreferredSize(new Dimension(15, 100));        slider1.addChangeListener(this);        slider2 = new JSlider(JSlider.VERTICAL, 0, 255, high);        slider2.setPreferredSize(new Dimension(15, 100));        slider2.addChangeListener(this);        return new Component[] { (Component) controls, slider1, slider2 };    }    public void customControlsThread(int state) {        if (state == CustomControls.START) {            controls.start();        } else if (state == CustomControls.STOP) {            controls.stop();        }    }    public static void thresholdOp(int low, int high) {        byte threshold[] = new byte[256];        for (int j = 0; j < 256 ; j++) {            if (j > high) {                threshold[j] = (byte) 255;            } else if (j < low) {                threshold[j] = (byte) 0;            } else {                threshold[j] = (byte) j;            }        }        biop[0] = new LookupOp(new ByteLookupTable(0,threshold), null);    }    public void drawDemo(int w, int h, Graphics2D g2) {        int iw = img[imgIndex].getWidth(null);        int ih = img[imgIndex].getHeight(null);        BufferedImage bimg = new BufferedImage(iw,ih,BufferedImage.TYPE_INT_RGB);        biop[opsIndex].filter(img[imgIndex], bimg);        g2.drawImage(bimg,0,0,w,h,null);    }    public void stateChanged(ChangeEvent e) {        // when using these sliders use double buffering, which means        // ignoring when DemoSurface.imageType = 'On Screen'        if (getImageType() <= 1) {            setImageType(2);        }        if (e.getSource().equals(slider1)) {            if (opsIndex == 0) {                thresholdOp(slider1.getValue(), high);            } else {                rescaleFactor = slider1.getValue();                biop[1] = new RescaleOp((float)rescaleFactor/128.0f, rescaleOffset, null);            }        } else {            if (opsIndex == 0) {                thresholdOp(low, slider2.getValue());            } else {                rescaleOffset = (float) slider2.getValue();                biop[1] = new RescaleOp((float)rescaleFactor/128.0f, rescaleOffset, null);            }        }        repaint();    }    public static void main(String s[]) {        JFrame f = new JFrame("Java2D Demo - ImageOps");        f.addWindowListener(new WindowAdapter() {            public void windowClosing(WindowEvent e) {System.exit(0);}        });        f.getContentPane().add("Center", new DemoPanel(new ImageOps()));        f.pack();        f.setSize(new Dimension(400,300));        f.show();    }    static class DemoControls extends JPanel implements ActionListener, Runnable {        ImageOps demo;        JComboBox imgCombo, opsCombo;        Font font = new Font("serif", Font.PLAIN, 10);        Thread thread;        public DemoControls(ImageOps demo) {            this.demo = demo;            setBackground(Color.gray);            add(imgCombo = new JComboBox());            imgCombo.setFont(font);            for (int i = 0; i < ImageOps.imgName.length; i++) {                imgCombo.addItem(ImageOps.imgName[i]);            }            imgCombo.addActionListener(this);            add(opsCombo = new JComboBox());            opsCombo.setFont(font);            for (int i = 0; i < ImageOps.opsName.length; i++) {                opsCombo.addItem(ImageOps.opsName[i]);            }            opsCombo.addActionListener(this);            addMouseListener(new MouseAdapter() {                public void mouseClicked(MouseEvent e) {                    if (thread == null) start(); else stop();                }            });        }        public void actionPerformed(ActionEvent e) {            if (e.getSource().equals(opsCombo)) {                demo.opsIndex = opsCombo.getSelectedIndex();                if (demo.opsIndex == 0) {                    demo.slider1.setValue(demo.low);                    demo.slider2.setValue(demo.high);                    demo.slider1.setEnabled(true);                    demo.slider2.setEnabled(true);                } else if (demo.opsIndex == 1) {                    demo.slider1.setValue(demo.rescaleFactor);                    demo.slider2.setValue((int) demo.rescaleOffset);                    demo.slider1.setEnabled(true);                    demo.slider2.setEnabled(true);                } else {                    demo.slider1.setEnabled(false);                    demo.slider2.setEnabled(false);                }            } else if (e.getSource().equals(imgCombo)) {                demo.imgIndex = imgCombo.getSelectedIndex();            }            demo.repaint(10);        }        public Dimension getPreferredSize() {            return new Dimension(200,32);        }        public void start() {            if (thread != null) {                return;            }            thread = new Thread(this);            thread.setPriority(Thread.MIN_PRIORITY);            thread.setName("Images.ImageOps DemoControls Thread");            thread.start();        }        public synchronized void stop() {            if (thread != null) {                thread.interrupt();            }            thread = null;            notifyAll();        }        public void run() {            try { thread.sleep(1111); } catch (Exception e) { return; }            Thread me = Thread.currentThread();            while (thread == me) {                for (int i = 0; i < ImageOps.imgName.length; i++) {                    imgCombo.setSelectedIndex(i);                    for (int j = 0; j < ImageOps.opsName.length; j++) {                        opsCombo.setSelectedIndex(j);                        if (j <= 1) {                            for (int k = 50; k <= 200; k+=10) {                                demo.slider1.setValue(k);                                try {                                    thread.sleep(200);                                } catch (InterruptedException e) { return; }                            }                        }                        try {                            thread.sleep(4444);                        } catch (InterruptedException e) { return; }                    }                }            }            thread = null;        }    } // End DemoControls} // End ImageOps