/*

 *

 * 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.Composite;

import static java.awt.Color.BLACK;

import static java.awt.Color.BLUE;

import static java.awt.Color.CYAN;

import static java.awt.Color.GREEN;

import static java.awt.Color.LIGHT_GRAY;

import static java.awt.Color.MAGENTA;

import static java.awt.Color.ORANGE;

import static java.awt.Color.PINK;

import static java.awt.Color.RED;

import static java.awt.Color.WHITE;

import static java.awt.Color.YELLOW;

import java.awt.AlphaComposite;

import java.awt.BasicStroke;

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.Component;

import java.awt.Dimension;

import java.awt.Font;

import java.awt.FontMetrics;

import java.awt.GradientPaint;

import java.awt.Graphics2D;

import java.awt.Image;

import java.awt.Paint;

import java.awt.Rectangle;

import java.awt.Shape;

import java.awt.TexturePaint;

import java.awt.geom.Arc2D;

import java.awt.geom.CubicCurve2D;

import java.awt.geom.Ellipse2D;

import java.awt.geom.GeneralPath;

import java.awt.geom.QuadCurve2D;

import java.awt.geom.Rectangle2D;

import java.awt.geom.RoundRectangle2D;

import java.awt.image.BufferedImage;

import java.util.ArrayList;

import java.util.List;

import java2d.AnimatingControlsSurface;

import java2d.CustomControls;

import javax.swing.Box;

import javax.swing.BoxLayout;

import javax.swing.JSlider;

import javax.swing.JToolBar;

import javax.swing.SwingConstants;

import javax.swing.border.EtchedBorder;

import javax.swing.border.TitledBorder;

import javax.swing.event.ChangeEvent;

import javax.swing.event.ChangeListener;

/**

 * Animation of compositing shapes, text and images fading in and out.

 */

@SuppressWarnings("serial")

public final class FadeAnim extends AnimatingControlsSurface {

    private static final TexturePaint texturePaint;

    static {

        int w = 10;

        int h = 10;

        BufferedImage bi = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);

        Graphics2D gi = bi.createGraphics();

        Color oc = BLUE;

        Color ic = GREEN;

        gi.setPaint(new GradientPaint(0, 0, oc, w * .35f, h * .35f, ic));

        gi.fillRect(0, 0, w / 2, h / 2);

        gi.setPaint(new GradientPaint(w, 0, oc, w * .65f, h * .35f, ic));

        gi.fillRect(w / 2, 0, w / 2, h / 2);

        gi.setPaint(new GradientPaint(0, h, oc, w * .35f, h * .65f, ic));

        gi.fillRect(0, h / 2, w / 2, h / 2);

        gi.setPaint(new GradientPaint(w, h, oc, w * .65f, h * .65f, ic));

        gi.fillRect(w / 2, h / 2, w / 2, h / 2);

        texturePaint = new TexturePaint(bi, new Rectangle(0, 0, w, h));

    }

    private static BasicStroke bs = new BasicStroke(6);

    private static Font fonts[] = {

        new Font(Font.SERIF, Font.PLAIN, 64),

        new Font(Font.SERIF, Font.BOLD | Font.ITALIC, 24),

        new Font(Font.MONOSPACED, Font.BOLD, 36),

        new Font(Font.SANS_SERIF, Font.BOLD | Font.ITALIC, 48),

        new Font(Font.SANS_SERIF, Font.PLAIN, 52) };

    private static String strings[] = {

        "Alpha", "Composite", "Src", "SrcOver",

        "SrcIn", "SrcOut", "Clear", "DstOver", "DstIn" };

    private static String imgs[] = {

        "jumptojavastrip.png", "duke.png", "star7.png" };

    private static Paint paints[] = {

        RED, BLUE, GREEN, MAGENTA,

        ORANGE, PINK, CYAN, texturePaint,

        YELLOW, LIGHT_GRAY, WHITE };

    private List<ObjectData> objects = new ArrayList<ObjectData>(20);

    private int numShapes, numStrings, numImages;

    public FadeAnim() {

        setBackground(BLACK);

        setStrings(2);

        setImages(3);

        setShapes(8);

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

        setConstraints(new String[] { BorderLayout.EAST });

    }

    public void setImages(int num) {

        if (num < numImages) {

            List<ObjectData> images = new ArrayList<ObjectData>(objects.size());

            for (ObjectData obj : objects) {

                if (obj.object instanceof Image) {

                    images.add(obj);

                }

            }

            objects.removeAll(images.subList(num, images.size()));

        } else {

            Dimension d = getSize();

            for (int i = numImages; i < num; i++) {

                Object obj = getImage(imgs[i % imgs.length]);

                if (imgs[i % imgs.length].equals("jumptojavastrip.png")) {

                    int iw = ((Image) obj).getWidth(null);

                    int ih = ((Image) obj).getHeight(null);

                    BufferedImage bimage = new BufferedImage(iw, ih,

                            BufferedImage.TYPE_INT_RGB);

                    bimage.createGraphics().drawImage((Image) obj, 0, 0, null);

                    obj = bimage;

                }

                ObjectData od = new ObjectData(obj, BLACK);

                od.reset(d.width, d.height);

                objects.add(od);

            }

        }

        numImages = num;

    }

    public void setStrings(int num) {

        if (num < numStrings) {

            List<ObjectData> textDatas = new ArrayList<ObjectData>(

                    objects.size());

            //for (int i = 0; i < objects.size(); i++) {

            for (ObjectData obj : objects) {

                if (obj.object instanceof TextData) {

                    textDatas.add(obj);

                }

            }

            objects.removeAll(textDatas.subList(num, textDatas.size()));

        } else {

            Dimension d = getSize();

            for (int i = numStrings; i < num; i++) {

                int j = i % fonts.length;

                int k = i % strings.length;

                Object obj = new TextData(strings[k], fonts[j], this);

                ObjectData od = new ObjectData(obj, paints[i % paints.length]);

                od.reset(d.width, d.height);

                objects.add(od);

            }

        }

        numStrings = num;

    }

    public void setShapes(int num) {

        if (num < numShapes) {

            List<ObjectData> shapes = new ArrayList<ObjectData>(objects.size());

            //for (int i = 0; i < objects.size(); i++) {

            for (ObjectData obj : objects) {

                if (obj.object instanceof Shape) {

                    shapes.add(obj);

                }

            }

            objects.removeAll(shapes.subList(num, shapes.size()));

        } else {

            Dimension d = getSize();

            for (int i = numShapes; i < num; i++) {

                Object obj = null;

                switch (i % 7) {

                    case 0:

                        obj = new GeneralPath();

                        break;

                    case 1:

                        obj = new Rectangle2D.Double();

                        break;

                    case 2:

                        obj = new Ellipse2D.Double();

                        break;

                    case 3:

                        obj = new Arc2D.Double();

                        break;

                    case 4:

                        obj = new RoundRectangle2D.Double();

                        break;

                    case 5:

                        obj = new CubicCurve2D.Double();

                        break;

                    case 6:

                        obj = new QuadCurve2D.Double();

                        break;

                }

                ObjectData od = new ObjectData(obj, paints[i % paints.length]);

                od.reset(d.width, d.height);

                objects.add(od);

            }

        }

        numShapes = num;

    }

    @Override

    public void reset(int w, int h) {

        for (int i = 0; i < objects.size(); i++) {

            objects.get(i).reset(w, h);

        }

    }

    @Override

    public void step(int w, int h) {

        for (int i = 0; i < objects.size(); i++) {

            objects.get(i).step(w, h);

        }

    }

    @Override

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

        for (int i = 0; i < objects.size(); i++) {

            ObjectData od = objects.get(i);

            AlphaComposite ac = AlphaComposite.getInstance(

                    AlphaComposite.SRC_OVER, od.alpha);

            g2.setComposite(ac);

            g2.setPaint(od.paint);

            g2.translate(od.x, od.y);

            if (od.object instanceof Image) {

                g2.drawImage((Image) od.object, 0, 0, this);

            } else if (od.object instanceof TextData) {

                g2.setFont(((TextData) od.object).font);

                g2.drawString(((TextData) od.object).string, 0, 0);

            } else if (od.object instanceof QuadCurve2D

                    || od.object instanceof CubicCurve2D) {

                g2.setStroke(bs);

                g2.draw((Shape) od.object);

            } else if (od.object instanceof Shape) {

                g2.fill((Shape) od.object);

            }

            g2.translate(-od.x, -od.y);

        }

    }

    public static void main(String argv[]) {

        createDemoFrame(new FadeAnim());

    }

    static class TextData extends Object {

        public String string;

        public Font font;

        public int width, height;

        public TextData(String str, Font font, Component cmp) {

            string = str;

            this.font = font;

            FontMetrics fm = cmp.getFontMetrics(font);

            width = fm.stringWidth(str);

            height = fm.getHeight();

        }

    }

    static class ObjectData extends Object {

        final int UP = 0;

        final int DOWN = 1;

        Object object;

        BufferedImage bimg;

        Paint paint;

        double x, y;

        float alpha;

        int alphaDirection;

        int imgX;

        public ObjectData(Object object, Paint paint) {

            this.object = object;

            this.paint = paint;

            if (object instanceof BufferedImage) {

                bimg = (BufferedImage) object;

                this.object = bimg.getSubimage(0, 0, 80, 80);

            }

            getRandomXY(300, 250);

            alpha = (float) Math.random();

            alphaDirection = Math.random() > 0.5 ? UP : DOWN;

        }

        private void getRandomXY(int w, int h) {

            if (object instanceof TextData) {

                x = Math.random() * (w - ((TextData) object).width);

                y = Math.random() * h;

                y = y < ((TextData) object).height ? ((TextData) object).height

                        : y;

            } else if (object instanceof Image) {

                x = Math.random() * (w - ((Image) object).getWidth(null));

                y = Math.random() * (h - ((Image) object).getHeight(null));

            } else if (object instanceof Shape) {

                Rectangle bounds = ((Shape) object).getBounds();

                x = Math.random() * (w - bounds.width);

                y = Math.random() * (h - bounds.height);

            }

        }

        public void reset(int w, int h) {

            getRandomXY(w, h);

            double ww = 20 + Math.random() * ((w == 0 ? 400 : w) / 4);

            double hh = 20 + Math.random() * ((h == 0 ? 300 : h) / 4);

            if (object instanceof Ellipse2D) {

                ((Ellipse2D) object).setFrame(0, 0, ww, hh);

            } else if (object instanceof Rectangle2D) {

                ((Rectangle2D) object).setRect(0, 0, ww, ww);

            } else if (object instanceof RoundRectangle2D) {

                ((RoundRectangle2D) object).setRoundRect(0, 0, hh, hh, 20, 20);

            } else if (object instanceof Arc2D) {

                ((Arc2D) object).setArc(0, 0, hh, hh, 45, 270, Arc2D.PIE);

            } else if (object instanceof QuadCurve2D) {

                ((QuadCurve2D) object).setCurve(0, 0, w * .2, h * .4, w * .4, 0);

            } else if (object instanceof CubicCurve2D) {

                ((CubicCurve2D) object).setCurve(0, 0, 30, -60, 60, 60, 90, 0);

            } else if (object instanceof GeneralPath) {

                GeneralPath p = new GeneralPath();

                float size = (float) ww;

                p.moveTo(-size / 2.0f, -size / 8.0f);

                p.lineTo(+size / 2.0f, -size / 8.0f);

                p.lineTo(-size / 4.0f, +size / 2.0f);

                p.lineTo(+0.0f, -size / 2.0f);

                p.lineTo(+size / 4.0f, +size / 2.0f);

                p.closePath();

                object = p;

            }

        }

        public void step(int w, int h) {

            if (object instanceof BufferedImage) {

                if ((imgX += 80) == 800) {

                    imgX = 0;

                }

                object = bimg.getSubimage(imgX, 0, 80, 80);

            }

            if (alphaDirection == UP) {

                if ((alpha += 0.05) > .99) {

                    alphaDirection = DOWN;

                    alpha = 1.0f;

                }

            } else if (alphaDirection == DOWN) {

                if ((alpha -= .05) < 0.01) {

                    alphaDirection = UP;

                    alpha = 0;

                    getRandomXY(w, h);

                }

            }

        }

    }

    static class DemoControls extends CustomControls implements ChangeListener {

        FadeAnim demo;

        JSlider shapeSlider, stringSlider, imageSlider;

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

        @SuppressWarnings("LeakingThisInConstructor")

        public DemoControls(FadeAnim demo) {

            super(demo.name);

            this.demo = demo;

            setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));

            add(Box.createVerticalStrut(5));

            JToolBar toolbar = new JToolBar(SwingConstants.VERTICAL);

            toolbar.setFloatable(false);

            shapeSlider = new JSlider(SwingConstants.HORIZONTAL, 0, 20,

                    demo.numShapes);

            shapeSlider.addChangeListener(this);

            TitledBorder tb = new TitledBorder(new EtchedBorder());

            tb.setTitleFont(font);

            tb.setTitle(String.valueOf(demo.numShapes) + " Shapes");

            shapeSlider.setBorder(tb);

            shapeSlider.setPreferredSize(new Dimension(80, 45));

            shapeSlider.setOpaque(true);

            toolbar.addSeparator();

            toolbar.add(shapeSlider);

            toolbar.addSeparator();

            stringSlider = new JSlider(SwingConstants.HORIZONTAL, 0, 10,

                    demo.numStrings);

            stringSlider.addChangeListener(this);

            tb = new TitledBorder(new EtchedBorder());

            tb.setTitleFont(font);

            tb.setTitle(String.valueOf(demo.numStrings) + " Strings");

            stringSlider.setBorder(tb);

            stringSlider.setPreferredSize(new Dimension(80, 45));

            stringSlider.setOpaque(true);

            toolbar.add(stringSlider);

            toolbar.addSeparator();

            imageSlider = new JSlider(SwingConstants.HORIZONTAL, 0, 10,

                    demo.numImages);

            imageSlider.addChangeListener(this);

            tb = new TitledBorder(new EtchedBorder());

            tb.setTitleFont(font);

            tb.setTitle(String.valueOf(demo.numImages) + " Images");

            imageSlider.setBorder(tb);

            imageSlider.setPreferredSize(new Dimension(80, 45));

            imageSlider.setOpaque(true);

            toolbar.add(imageSlider);

            toolbar.addSeparator();

            add(toolbar);

        }

        @Override

        public void stateChanged(ChangeEvent e) {

            JSlider slider = (JSlider) e.getSource();

            int value = slider.getValue();

            TitledBorder tb = (TitledBorder) slider.getBorder();

            if (slider.equals(shapeSlider)) {

                tb.setTitle(String.valueOf(value) + " Shapes");

                demo.setShapes(value);

            } else if (slider.equals(stringSlider)) {

                tb.setTitle(String.valueOf(value) + " Strings");

                demo.setStrings(value);

            } else if (slider.equals(imageSlider)) {

                tb.setTitle(String.valueOf(value) + " Images");

                demo.setImages(value);

            }

            slider.repaint();

            if (!demo.animating.running()) {

                demo.repaint();

            }

        }

        @Override

        public Dimension getPreferredSize() {

            return new Dimension(80, 0);

        }

        @Override

        public void run() {

            try {

                Thread.sleep(999);

            } catch (InterruptedException e) {

                return;

            }

            shapeSlider.setValue((int) (Math.random() * 5));

            stringSlider.setValue(10);

            thread = null;

        }

    } // End DemoControls

} // End FadeAnim