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Skin Look And Feel allows Java developers to write skin-able application using the Swing toolkit. Skin Look And Feel is able to load themepacks (a bundle of GTK - The Gimp Toolkit - and KDE - The K Desktop Environment - skins) to enhance your application GUI controls such as Buttons, Checks, Radios, Scrollbars, Progress Bar, Lists, Tables, Internal Frames, Colors, Background Textures, Regular Windows. Skin Look And Feel (aka SkinLF) also includes NativeSkin to create irregular windows.

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/* ====================================================================
 *
 * Skin Look And Feel 6.7 License.
 *
 * Copyright (c) 2000-2006 L2FProd.com.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. 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.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by L2FProd.com
 *        (http://www.L2FProd.com/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "Skin Look And Feel", "SkinLF" and "L2FProd.com" must not
 *    be used to endorse or promote products derived from this software
 *    without prior written permission. For written permission, please
 *    contact [email protected].
 *
 * 5. Products derived from this software may not be called "SkinLF"
 *    nor may "SkinLF" appear in their names without prior written
 *    permission of L2FProd.com.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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package com.l2fprod.gui.plaf.skin.impl.gtk;

import com.l2fprod.gui.plaf.skin.DefaultButton;
import com.l2fprod.gui.plaf.skin.SkinScrollbar;
import com.l2fprod.gui.plaf.skin.impl.AbstractSkinScrollbar;
import com.l2fprod.gui.plaf.skin.impl.gtk.parser.GtkParser;
import com.l2fprod.util.ImageUtils;

import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Rectangle;

import javax.swing.JComponent;
import javax.swing.JScrollBar;
import javax.swing.SwingConstants;

/**
 * @author    $Author: l2fprod $
 * @created   27 avril 2002
 * @version   $Revision: 1.4 $, $Date: 2005/11/19 09:20:02 $
 */
final class GtkScrollbar extends AbstractSkinScrollbar implements SkinScrollbar, SwingConstants {

  DefaultButton h_track, v_track;
  DefaultButton h_thumb, v_thumb;

  DefaultButton h_handle, v_handle;

  ArrowButton up, down, left, right;

  Dimension minimumThumbSize;

  /**
   * Constructor for the GtkScrollbar object
   *
   * @param parser         Description of Parameter
   * @exception Exception  Description of Exception
   */
  public GtkScrollbar(GtkParser parser) throws Exception {
    h_thumb = GtkUtils.newButton(parser, "GtkScrollbar",
        new String[]{"function", "detail", "orientation", "state"},
        new String[]{"BOX", "slider", "HORIZONTAL", "NORMAL"}, false, true, true, false);
    v_thumb = GtkUtils.newButton(parser, "GtkScrollbar",
        new String[]{"function", "detail", "orientation"},
        new String[]{"BOX", "slider", "VERTICAL"}, false, true, true, false);

    h_track = GtkUtils.newButton(parser, "GtkScrollbar",
        new String[]{"function", "detail", "orientation"},
        new String[]{"BOX", "trough", "HORIZONTAL"}, false, true, true, false);

    v_track = GtkUtils.newButton(parser, "GtkScrollbar",
        new String[]{"function", "detail", "orientation"},
        new String[]{"BOX", "trough", "VERTICAL"}, false, true, true, false);

    h_handle = GtkUtils.newButton(parser, "default",
        new String[]{"function", "orientation"},
        new String[]{"HANDLE", "HORIZONTAL"}, true, true);
    if (h_handle != null) {
      h_handle.setCenterFill(ImageUtils.PAINT_STRETCH);
    }

    v_handle = GtkUtils.newButton(parser, "default",
        new String[]{"function", "orientation"},
        new String[]{"HANDLE", "VERTICAL"}, true, true);
    if (v_handle != null) {
      v_handle.setCenterFill(ImageUtils.PAINT_STRETCH);
    }

    up = new ArrowButton(parser, "UP");
    down = new ArrowButton(parser, "DOWN");
    left = new ArrowButton(parser, "LEFT");
    right = new ArrowButton(parser, "RIGHT");

    minimumThumbSize = new Dimension(h_thumb.getInsets().left + (h_handle != null ? h_handle.getWidth() : 0) + h_thumb.getInsets().right,
        v_thumb.getInsets().top + (v_handle != null ? v_handle.getHeight() : 0) + v_thumb.getInsets().bottom);
  }

  /**
   * Gets the PreferredSize attribute of the GtkScrollbar object
   *
   * @param scrollbar  Description of Parameter
   * @return           The PreferredSize value
   */
  public Dimension getPreferredSize(JScrollBar scrollbar) {
    return (scrollbar.getOrientation() == JScrollBar.VERTICAL)
        ? new Dimension(Math.max(10, Math.max(up.getWidth(), v_thumb.getWidth())), 48)
        : new Dimension(48, Math.max(10, Math.max(left.getHeight(), h_thumb.getHeight())));
  }

  /**
   * Gets the MinimumThumbSize attribute of the GtkScrollbar object
   *
   * @return   The MinimumThumbSize value
   */
  public Dimension getMinimumThumbSize() {
    return minimumThumbSize;
  }

  /**
   * Gets the ArrowPreferredSize attribute of the GtkScrollbar object
   *
   * @param direction  Description of Parameter
   * @return           The ArrowPreferredSize value
   */
  public Dimension getArrowPreferredSize(int direction) {
    switch (direction) {
      case NORTH:
        return up.getPreferredSize();
      case SOUTH:
        return down.getPreferredSize();
      case WEST:
        return left.getPreferredSize();
      case EAST:
        return right.getPreferredSize();
      default:
        throw new Error("Invalid direction " + direction);
    }
  }

  /**
   * Description of the Method
   *
   * @return   Description of the Returned Value
   */
  public boolean status() {
    return true;
  }

  /**
   * Description of the Method
   *
   * @param c  Description of Parameter
   * @return   Description of the Returned Value
   */
  public boolean installSkin(JComponent c) {
    return true;
  }

  /**
   * Description of the Method
   *
   * @param g          Description of Parameter
   * @param b          Description of Parameter
   * @param direction  Description of Parameter
   * @return           Description of the Returned Value
   */
  public boolean paintArrow(java.awt.Graphics g, javax.swing.AbstractButton b, int direction) {
    switch (direction) {
      case NORTH:
        up.paint(g, b);
        break;
      case SOUTH:
        down.paint(g, b);
        break;
      case WEST:
        left.paint(g, b);
        break;
      case EAST:
        right.paint(g, b);
    }
    return true;
  }

  // track is under thumb
  /**
   * Description of the Method
   *
   * @param g            Description of Parameter
   * @param scrollbar    Description of Parameter
   * @param trackBounds  Description of Parameter
   * @return             Description of the Returned Value
   */
  public boolean paintTrack(Graphics g, JScrollBar scrollbar, Rectangle trackBounds) {
    if (h_track != null) {
      if (scrollbar.getOrientation() == HORIZONTAL) {
        h_track.paint(g, 0, 0, trackBounds.width, trackBounds.height, scrollbar);
      }
      else {
        v_track.paint(g, 0, 0, trackBounds.width, trackBounds.height, scrollbar);
      }
      return true;
    }
    return false;
  }

  // thumb is the variable area
  /**
   * Description of the Method
   *
   * @param g            Description of Parameter
   * @param scrollbar    Description of Parameter
   * @param thumbBounds  Description of Parameter
   * @return             Description of the Returned Value
   */
  public boolean paintThumb(Graphics g, JScrollBar scrollbar, Rectangle thumbBounds) {
    // the UI translate the graphics to thumbBounds.x and .y
    if (h_thumb != null) {
      if (scrollbar.getOrientation() == HORIZONTAL) {
        h_thumb.paint(g, 0, 0, thumbBounds.width, thumbBounds.height, scrollbar);
        // paint the handle only if there is room for it
        if (h_handle != null && h_handle.getWidth() < thumbBounds.width) {
          h_handle.paint(g, Math.max(0, (thumbBounds.width - h_handle.getWidth()) / 2),
              (thumbBounds.height - h_handle.getHeight()) / 2,
              Math.min(thumbBounds.width, h_handle.getWidth()),
              h_handle.getHeight(), scrollbar);
        }
      }
      else {
        v_thumb.paint(g, 0, 0, thumbBounds.width, thumbBounds.height, scrollbar);
        // paint the handle only if there is room for it
        if (v_handle != null && v_handle.getHeight() < thumbBounds.height) {
          v_handle.paint(g, (thumbBounds.width - v_handle.getWidth()) / 2,
              Math.max(0, (thumbBounds.height - v_handle.getHeight()) / 2),
              v_handle.getWidth(),
              Math.min(thumbBounds.height, v_handle.getHeight()), scrollbar);
        }
      }
      return true;
    }
    return false;
  }

}




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