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PlasticBumps.java

/*
 * Copyright (c) 2001-2007 JGoodies Karsten Lentzsch. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions are met:
 * 
 *  o Redistributions of source code must retain the above copyright notice, 
 *    this list of conditions and the following disclaimer. 
 *     
 *  o 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. 
 *     
 *  o Neither the name of JGoodies Karsten Lentzsch 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 com.jgoodies.looks.plastic;

import java.awt.*;
import java.awt.image.BufferedImage;
import java.awt.image.DataBuffer;
import java.awt.image.IndexColorModel;
import java.util.Enumeration;
import java.util.Vector;

import javax.swing.Icon;

/**
 * The bumps used in the JGoodies Plastic Look&Feel.
 *
 * @author Sun
 * @version $Revision: 1.3 $
 */
00048 final class PlasticBumps implements Icon {

      protected int xBumps;
      protected int yBumps;
      protected Color topColor;
      protected Color shadowColor;
      protected Color backColor;

      protected static Vector buffers = new Vector();
      protected BumpBuffer buffer;

      public PlasticBumps(Dimension bumpArea) {
            this(bumpArea.width, bumpArea.height);
      }

      public PlasticBumps(int width, int height) {
            this(width, height,
                  PlasticLookAndFeel.getPrimaryControlHighlight(),
                  PlasticLookAndFeel.getPrimaryControlDarkShadow(),
                  PlasticLookAndFeel.getPrimaryControlShadow());
      }

      public PlasticBumps(int width, int height,
            Color newTopColor, Color newShadowColor, Color newBackColor) {
            setBumpArea(width, height);
            setBumpColors(newTopColor, newShadowColor, newBackColor);
      }

      private BumpBuffer getBuffer(GraphicsConfiguration gc, 
            Color aTopColor, Color aShadowColor, Color aBackColor) {
            if (buffer != null
                  && buffer.hasSameConfiguration(gc, aTopColor, aShadowColor, aBackColor)) {
                  return buffer;
            }
            BumpBuffer result = null;
            Enumeration elements = buffers.elements();
            while (elements.hasMoreElements()) {
                  BumpBuffer aBuffer = (BumpBuffer) elements.nextElement();
                  if (aBuffer.hasSameConfiguration(gc, aTopColor, aShadowColor, aBackColor)) {
                        result = aBuffer;
                        break;
                  }
            }
            if (result == null) {
                  result = new BumpBuffer(gc, topColor, shadowColor, backColor);
                  buffers.addElement(result);
            }
            return result;
      }

      public void setBumpArea(Dimension bumpArea) {
            setBumpArea(bumpArea.width, bumpArea.height);
      }

      public void setBumpArea(int width, int height) {
            xBumps = width / 2;
            yBumps = height / 2;
      }

      public void setBumpColors(Color newTopColor, Color newShadowColor, Color newBackColor) {
            topColor = newTopColor;
            shadowColor = newShadowColor;
            backColor = newBackColor;
      }

      public void paintIcon(Component c, Graphics g, int x, int y) {
            GraphicsConfiguration gc = (g instanceof Graphics2D)
                        ? (GraphicsConfiguration) ((Graphics2D) g).getDeviceConfiguration()
                        : null;

            buffer = getBuffer(gc, topColor, shadowColor, backColor);

            int bufferWidth = buffer.getImageSize().width;
            int bufferHeight = buffer.getImageSize().height;
            int iconWidth = getIconWidth();
            int iconHeight = getIconHeight();
            int x2 = x + iconWidth;
            int y2 = y + iconHeight;
            int savex = x;

            while (y < y2) {
                  int h = Math.min(y2 - y, bufferHeight);
                  for (x = savex; x < x2; x += bufferWidth) {
                        int w = Math.min(x2 - x, bufferWidth);
                        g.drawImage(buffer.getImage(), x, y, x + w, y + h, 0, 0, w, h, null);
                  }
                  y += bufferHeight;
            }
      }

      public int getIconWidth()  { return xBumps * 2; }
      public int getIconHeight() { return yBumps * 2; }
}

final class BumpBuffer {

      static final int IMAGE_SIZE = 64;
      static Dimension imageSize = new Dimension(IMAGE_SIZE, IMAGE_SIZE);

      transient Image image;
      Color topColor;
      Color shadowColor;
      Color backColor;
      private GraphicsConfiguration gc;

      public BumpBuffer(
            GraphicsConfiguration gc,
            Color aTopColor,
            Color aShadowColor,
            Color aBackColor) {
            this.gc = gc;
            topColor = aTopColor;
            shadowColor = aShadowColor;
            backColor = aBackColor;
            createImage();
            fillBumpBuffer();
      }

      public boolean hasSameConfiguration(
            GraphicsConfiguration aGC,
            Color aTopColor,
            Color aShadowColor,
            Color aBackColor) {
            if (this.gc != null) {
                  if (!this.gc.equals(aGC)) {
                        return false;
                  }
            } else if (aGC != null) {
                  return false;
            }
            return topColor.equals(aTopColor)
                  && shadowColor.equals(aShadowColor)
                  && backColor.equals(aBackColor);
      }

      /**
       * Returns the Image containing the bumps appropriate for the passed in
       * <code>GraphicsConfiguration</code>.
       */
      public Image getImage() { return image; }

      public Dimension getImageSize() { return imageSize; }

      /**
       * Paints the bumps into the current image.
       */
      private void fillBumpBuffer() {
            Graphics g = image.getGraphics();

            g.setColor(backColor);
            g.fillRect(0, 0, IMAGE_SIZE, IMAGE_SIZE);

            g.setColor(topColor);
            for (int x = 0; x < IMAGE_SIZE; x += 4) {
                  for (int y = 0; y < IMAGE_SIZE; y += 4) {
                        g.drawLine(x, y, x, y);
                        g.drawLine(x + 2, y + 2, x + 2, y + 2);
                  }
            }

            g.setColor(shadowColor);
            for (int x = 0; x < IMAGE_SIZE; x += 4) {
                  for (int y = 0; y < IMAGE_SIZE; y += 4) {
                        g.drawLine(x + 1, y + 1, x + 1, y + 1);
                        g.drawLine(x + 3, y + 3, x + 3, y + 3);
                  }
            }
            g.dispose();
      }

      /**
       * Creates the image appropriate for the passed in
       * <code>GraphicsConfiguration</code>, which may be null.
       */
      private void createImage() {
            if (gc != null) {
                  image = gc.createCompatibleImage(IMAGE_SIZE, IMAGE_SIZE);
            } else {
                  int[] cmap = { backColor.getRGB(), topColor.getRGB(), shadowColor.getRGB()};
                  IndexColorModel icm =
                        new IndexColorModel(8, 3, cmap, 0, false, -1, DataBuffer.TYPE_BYTE);
                  image = new BufferedImage(IMAGE_SIZE, IMAGE_SIZE, BufferedImage.TYPE_BYTE_INDEXED, icm);
            }
      }
}

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