/*

 *

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

 *

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 * 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

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 */

package java2d.demos.Clipping;

import java.awt.*;

import java.awt.event.*;

import java.awt.geom.*;

import java.awt.font.FontRenderContext;

import java.awt.font.TextLayout;

import javax.swing.*;

import java2d.AnimatingControlsSurface;

import java2d.CustomControls;

import static java.awt.Color.*;

/**

 * Animated intersection clipping of lines, an image and a textured rectangle.

 */

@SuppressWarnings("serial")

public class Intersection extends AnimatingControlsSurface {

    private static final int HEIGHT_DECREASE = 0;

    private static final int HEIGHT_INCREASE = 1;

    private static final int  WIDTH_DECREASE = 2;

    private static final int  WIDTH_INCREASE = 3;

    private int xx, yy, ww, hh;

    private int direction = HEIGHT_DECREASE;

    private int angdeg;

    private Shape textshape;

    private double sw, sh;

    private GeneralPath ovals;

    private Rectangle2D rectshape;

    protected boolean doIntersection = true;

    protected boolean doOvals = true;

    protected boolean doText;

    protected boolean threeSixty;

    public Intersection() {

        setBackground(WHITE);

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

    }

    @Override

    public void reset(int w, int h) {

        xx = yy = 0;

        ww = w-1; hh = h;

        direction = HEIGHT_DECREASE;

        angdeg = 0;

        FontRenderContext frc = new FontRenderContext(null, true, false);

        Font f = new Font(Font.SERIF, Font.BOLD,32);

        TextLayout tl = new TextLayout("J2D", f, frc);

        sw = tl.getBounds().getWidth();

        sh = tl.getBounds().getHeight();

        int size = Math.min(w, h);

        double sx = (size-40)/sw;

        double sy = (size-100)/sh;

        AffineTransform Tx = AffineTransform.getScaleInstance(sx, sy);

        textshape = tl.getOutline(Tx);

        rectshape = textshape.getBounds();

        sw = rectshape.getWidth();

        sh = rectshape.getHeight();

        ovals = new GeneralPath();

        ovals.append(new Ellipse2D.Double(  10,   10, 20, 20), false);

        ovals.append(new Ellipse2D.Double(w-30,   10, 20, 20), false);

        ovals.append(new Ellipse2D.Double(  10, h-30, 20, 20), false);

        ovals.append(new Ellipse2D.Double(w-30, h-30, 20, 20), false);

    }

    @Override

    public void step(int w, int h) {

        if (direction == HEIGHT_DECREASE) {

            yy+=2; hh-=4;

            if (yy >= h/2) {

                direction = HEIGHT_INCREASE;

            }

        } else if (direction == HEIGHT_INCREASE) {

            yy-=2; hh+=4;

            if (yy <= 0) {

                direction = WIDTH_DECREASE;

                hh = h-1; yy = 0;

            }

        }

        if (direction == WIDTH_DECREASE) {

            xx+=2; ww-=4;

            if (xx >= w/2) {

                direction = WIDTH_INCREASE;

            }

        } else if (direction == WIDTH_INCREASE) {

            xx-=2; ww+=4;

            if (xx <= 0) {

                direction = HEIGHT_DECREASE;

                ww = w-1; xx = 0;

            }

        }

        if ((angdeg += 5) == 360) {

            angdeg = 0;

            threeSixty = true;

        }

    }

    @Override

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

        Rectangle rect = new Rectangle(xx, yy, ww, hh);

        AffineTransform Tx = new AffineTransform();

        Tx.rotate(Math.toRadians(angdeg),w/2,h/2);

        Tx.translate(w/2-sw/2, sh+(h-sh)/2);

        GeneralPath path = new GeneralPath();

        if (doOvals) {

            path.append(ovals, false);

        }

        if (doText) {

            path.append(Tx.createTransformedShape(textshape), false);

        } else {

            path.append(Tx.createTransformedShape(rectshape), false);

        }

        if (doIntersection) {

            g2.clip(rect);

            g2.clip(path);

        }

        g2.setColor(GREEN);

        g2.fill(rect);

        g2.setClip(new Rectangle(0, 0, w, h));

        g2.setColor(LIGHT_GRAY);

        g2.draw(rect);

        g2.setColor(BLACK);

        g2.draw(path);

    }

    public static void main(String argv[]) {

        createDemoFrame(new Intersection());

    }

    static final class DemoControls extends CustomControls implements ActionListener {

        Intersection demo;

        JToolBar toolbar;

        public DemoControls(Intersection demo) {

            super(demo.name);

            this.demo = demo;

            add(toolbar = new JToolBar());

            toolbar.setFloatable(false);

            addTool("Intersect", true );

            addTool("Text",      false);

            addTool("Ovals",     true );

        }

        public void addTool(String str, boolean state) {

            JToggleButton b = (JToggleButton) toolbar.add(new JToggleButton(str));

            b.setFocusPainted(false);

            b.setSelected(state);

            b.addActionListener(this);

            int width = b.getPreferredSize().width;

            Dimension prefSize = new Dimension(width, 21);

            b.setPreferredSize(prefSize);

            b.setMaximumSize(  prefSize);

            b.setMinimumSize(  prefSize);

        }

        @Override

        public void actionPerformed(ActionEvent e) {

            JToggleButton b = (JToggleButton) e.getSource();

            if (b.getText().equals("Intersect")) {

                demo.doIntersection = b.isSelected();

            } else if (b.getText().equals("Ovals")) {

                demo.doOvals = b.isSelected();

            } else if (b.getText().equals("Text")) {

                demo.doText = b.isSelected();

            }

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

                demo.repaint();

            }

        }

        @Override

        public Dimension getPreferredSize() {

            return new Dimension(200,40);

        }

        @Override

        @SuppressWarnings("SleepWhileHoldingLock")

        public void run() {

            Thread me = Thread.currentThread();

            while (thread == me) {

                if (demo.threeSixty) {

                    ((AbstractButton) toolbar.getComponentAtIndex(1)).doClick();

                    demo.threeSixty = false;

                }

                try {

                    Thread.sleep(500);

                } catch (InterruptedException e) { return; }

            }

            thread = null;

        }

    } // End DemoControls

} // End Intersection