/*

 *

 * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 *   - Redistributions of source code must retain the above copyright

 *     notice, this list of conditions and the following disclaimer.

 *

 *   - Redistributions in binary form must reproduce the above copyright

 *     notice, this list of conditions and the following disclaimer in the

 *     documentation and/or other materials provided with the distribution.

 *

 *   - Neither the name of Oracle nor the names of its

 *     contributors may be used to endorse or promote products derived

 *     from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS

 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR

 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF

 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING

 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS

 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

package java2d.demos.Images;

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.Component;

import java.awt.Dimension;

import java.awt.Font;

import java.awt.Graphics2D;

import java.awt.Image;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.geom.AffineTransform;

import java.awt.image.BufferedImage;

import java.awt.image.BufferedImageOp;

import java.awt.image.ByteLookupTable;

import java.awt.image.ConvolveOp;

import java.awt.image.Kernel;

import java.awt.image.LookupOp;

import java.awt.image.RescaleOp;

import java2d.ControlsSurface;

import java2d.CustomControls;

import javax.swing.JComboBox;

import javax.swing.JSlider;

import javax.swing.SwingConstants;

import javax.swing.event.ChangeEvent;

import javax.swing.event.ChangeListener;

/**

 * Images drawn using operators such as ConvolveOp LowPass & Sharpen,

 * LookupOp and RescaleOp.

 */

@SuppressWarnings("serial")

public class ImageOps extends ControlsSurface implements ChangeListener {

    protected JSlider slider1, slider2;

    private static final String imgName[] = { "bld.jpg", "boat.png" };

    private static final BufferedImage img[] = new BufferedImage[imgName.length];

    private static final String opsName[] = {

        "Threshold", "RescaleOp", "Invert", "Yellow Invert", "3x3 Blur",

        "3x3 Sharpen", "3x3 Edge", "5x5 Edge" };

    private static final BufferedImageOp biop[] =

            new BufferedImageOp[opsName.length];

    private static int rescaleFactor = 128;

    private static float rescaleOffset = 0;

    private static final int low = 100, high = 200;

    private int opsIndex, imgIndex;

    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]));

        }

    }

    @SuppressWarnings("LeakingThisInConstructor")

    public ImageOps() {

        setDoubleBuffered(true);

        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);

        }

        slider1 = new JSlider(SwingConstants.VERTICAL, 0, 255, low);

        slider1.setPreferredSize(new Dimension(15, 100));

        slider1.addChangeListener(this);

        slider2 = new JSlider(SwingConstants.VERTICAL, 0, 255, high);

        slider2.setPreferredSize(new Dimension(15, 100));

        slider2.addChangeListener(this);

        setControls(new Component[] { new DemoControls(this), slider1, slider2 });

        setConstraints(new String[] {

                    BorderLayout.NORTH, BorderLayout.WEST, BorderLayout.EAST });

    }

    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);

    }

    @Override

    public void render(int w, int h, Graphics2D g2) {

        int iw = img[imgIndex].getWidth(null);

        int ih = img[imgIndex].getHeight(null);

        AffineTransform oldXform = g2.getTransform();

        g2.scale(((double) w) / iw, ((double) h) / ih);

        g2.drawImage(img[imgIndex], biop[opsIndex], 0, 0);

        g2.setTransform(oldXform);

    }

    @Override

    public void stateChanged(ChangeEvent e) {

        if (e.getSource().equals(slider1)) {

            if (opsIndex == 0) {

                thresholdOp(slider1.getValue(), high);

            } else {

                rescaleFactor = slider1.getValue();

                biop[1] = new RescaleOp(rescaleFactor / 128.0f, rescaleOffset,

                        null);

            }

        } else {

            if (opsIndex == 0) {

                thresholdOp(low, slider2.getValue());

            } else {

                rescaleOffset = slider2.getValue();

                biop[1] = new RescaleOp(rescaleFactor / 128.0f, rescaleOffset,

                        null);

            }

        }

        repaint();

    }

    public static void main(String s[]) {

        createDemoFrame(new ImageOps());

    }

    static class DemoControls extends CustomControls implements ActionListener {

        ImageOps demo;

        JComboBox imgCombo, opsCombo;

        Font font = new Font(Font.SERIF, Font.PLAIN, 10);

        @SuppressWarnings("LeakingThisInConstructor")

        public DemoControls(ImageOps demo) {

            super(demo.name);

            this.demo = demo;

            add(imgCombo = new JComboBox());

            imgCombo.setFont(font);

            for (String name : ImageOps.imgName) {

                imgCombo.addItem(name);

            }

            imgCombo.addActionListener(this);

            add(opsCombo = new JComboBox());

            opsCombo.setFont(font);

            for (String name : ImageOps.opsName) {

                opsCombo.addItem(name);

            }

            opsCombo.addActionListener(this);

        }

        @Override

        public void actionPerformed(ActionEvent e) {

            if (e.getSource().equals(opsCombo)) {

                demo.opsIndex = opsCombo.getSelectedIndex();

                if (demo.opsIndex == 0) {

                    demo.slider1.setValue(ImageOps.low);

                    demo.slider2.setValue(ImageOps.high);

                    demo.slider1.setEnabled(true);

                    demo.slider2.setEnabled(true);

                } else if (demo.opsIndex == 1) {

                    demo.slider1.setValue(ImageOps.rescaleFactor);

                    demo.slider2.setValue((int) ImageOps.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);

        }

        @Override

        public Dimension getPreferredSize() {

            return new Dimension(200, 39);

        }

        @Override

        @SuppressWarnings("SleepWhileHoldingLock")

        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