systemcolor.java

来自「This is a resource based on j2me embedde」· Java 代码 · 共 329 行

/*
 * @(#)SystemColor.java	1.17 06/10/10
 *
 * Copyright  1990-2008 Sun Microsystems, Inc. All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License version
 * 2 only, as published by the Free Software Foundation. 
 * 
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License version 2 for more details (a copy is
 * included at /legal/license.txt). 
 * 
 * You should have received a copy of the GNU General Public License
 * version 2 along with this work; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA 
 * 
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
 * Clara, CA 95054 or visit www.sun.com if you need additional
 * information or have any questions. 
 *
 */
package java.awt;

/**
 * A class to encapsulate symbolic colors representing the color
 * of GUI objects on a system.  For systems which support the dynamic
 * update of the system colors (when the user changes the colors)
 * the actual RGB values of these symbolic colors will also change
 * dynamically.  In order to compare the "current" RGB value of a SystemColor
 * object with a non-symbolic Color object, getRGB() should be used
 * rather than equals(). 
 *
 * @version 	1.13, 08/19/02
 * @author 	Carl Quinn
 * @author      Amy Fowler
 */
public final class SystemColor extends Color implements java.io.Serializable {
    /**
     * The array index for the desktop background color.
     */
    public final static int DESKTOP = 0;
    /**
     * The array index for the active caption background color.
     */
    public final static int ACTIVE_CAPTION = 1;
    /**
     * The array index for the action caption text color.
     */
    public final static int ACTIVE_CAPTION_TEXT = 2;
    /**
     * The array index for the active caption border color.
     */
    public final static int ACTIVE_CAPTION_BORDER = 3;
    /**
     * The array index for the inactive caption background color.
     */
    public final static int INACTIVE_CAPTION = 4;
    /**
     * The array index for the inactive caption text color.
     */
    public final static int INACTIVE_CAPTION_TEXT = 5;
    /**
     * The array index for the inactive caption border color.
     */
    public final static int INACTIVE_CAPTION_BORDER = 6;
    /**
     * The array index for the window background color.
     */
    public final static int WINDOW = 7;
    /**
     * The array index for the window border color.
     */
    public final static int WINDOW_BORDER = 8;
    /**
     * The array index for the window text color.
     */
    public final static int WINDOW_TEXT = 9;
    /**
     * The array index for the menu background color.
     */
    public final static int MENU = 10;
    /**
     * The array index for the menu text color.
     */
    public final static int MENU_TEXT = 11;
    /**
     * The array index for the text background color.
     */
    public final static int TEXT = 12;
    /**
     * The array index for the text text color.
     */
    public final static int TEXT_TEXT = 13;
    /**
     * The array index for the text highlight color.
     */
    public final static int TEXT_HIGHLIGHT = 14;
    /**
     * The array index for the text highlight text color.
     */
    public final static int TEXT_HIGHLIGHT_TEXT = 15;
    /**
     * The array index for the text inactive text color.
     */
    public final static int TEXT_INACTIVE_TEXT = 16;
    /**
     * The array index for the control background color.
     */
    public final static int CONTROL = 17;
    /**
     * The array index for the control text color.
     */
    public final static int CONTROL_TEXT = 18;
    /**
     * The array index for the control highlight color.
     */
    public final static int CONTROL_HIGHLIGHT = 19;
    /**
     * The array index for the control light highlight color.
     */
    public final static int CONTROL_LT_HIGHLIGHT = 20;
    /**
     * The array index for the control shadow color.
     */
    public final static int CONTROL_SHADOW = 21;
    /**
     * The array index for the control dark shadow color.
     */
    public final static int CONTROL_DK_SHADOW = 22;
    /**
     * The array index for the scrollbar background color.
     */
    public final static int SCROLLBAR = 23;
    /**
     * The array index for the info background color.
     */
    public final static int INFO = 24;
    /**
     * The array index for the info text color.
     */
    public final static int INFO_TEXT = 25;
    /**
     * The number of system colors in the array.
     */
    public final static int NUM_COLORS = 26;
    /**
     * The color of the desktop background.
     */
    public final static SystemColor desktop = new SystemColor((byte) DESKTOP);
    /**
     * The background color for captions in window borders.
     */
    public final static SystemColor activeCaption = new SystemColor((byte) ACTIVE_CAPTION);
    /**
     * The text color for captions in window borders.
     */
    public final static SystemColor activeCaptionText = new SystemColor((byte) ACTIVE_CAPTION_TEXT);
    /**
     * The border color for captions in window borders.
     */
    public final static SystemColor activeCaptionBorder = new SystemColor((byte) ACTIVE_CAPTION_BORDER);
    /**
     * The background color for inactive captions in window borders.
     */
    public final static SystemColor inactiveCaption = new SystemColor((byte) INACTIVE_CAPTION);
    /**
     * The text color for inactive captions in window borders.
     */
    public final static SystemColor inactiveCaptionText = new SystemColor((byte) INACTIVE_CAPTION_TEXT);
    /**
     * The border color for inactive captios in window borders.
     */
    public final static SystemColor inactiveCaptionBorder = new SystemColor((byte) INACTIVE_CAPTION_BORDER);
    /**
     * The background color for windows.
     */
    public final static SystemColor window = new SystemColor((byte) WINDOW);
    /**
     * The border color for windows.
     */
    public final static SystemColor windowBorder = new SystemColor((byte) WINDOW_BORDER);
    /**
     * The text color for windows.
     */
    public final static SystemColor windowText = new SystemColor((byte) WINDOW_TEXT);
    /**
     * The background color for menus.
     */
    public final static SystemColor menu = new SystemColor((byte) MENU);
    /**
     * The text color for menus.
     */
    public final static SystemColor menuText = new SystemColor((byte) MENU_TEXT);
    /**
     * The background color for text components.
     */
    public final static SystemColor text = new SystemColor((byte) TEXT);
    /**
     * The text color for text components.
     */
    public final static SystemColor textText = new SystemColor((byte) TEXT_TEXT);
    /**
     * The background color for highlighted text.
     */
    public final static SystemColor textHighlight = new SystemColor((byte) TEXT_HIGHLIGHT);
    /**
     * The text color for highlighted text.
     */
    public final static SystemColor textHighlightText = new SystemColor((byte) TEXT_HIGHLIGHT_TEXT);
    /**
     * The text color for inactive text.
     */
    public final static SystemColor textInactiveText = new SystemColor((byte) TEXT_INACTIVE_TEXT);
    /**
     * The background color for control objects.
     */
    public final static SystemColor control = new SystemColor((byte) CONTROL);
    /**
     * The text color for control objects.
     */
    public final static SystemColor controlText = new SystemColor((byte) CONTROL_TEXT);
    /**
     * The regular highlight color for control objects.
     */
    public final static SystemColor controlHighlight = new SystemColor((byte) CONTROL_HIGHLIGHT);
    /**
     * The light highlight color for control objects.
     */
    public final static SystemColor controlLtHighlight = new SystemColor((byte) CONTROL_LT_HIGHLIGHT);
    /**
     * The regular shadow color for control objects.
     */
    public final static SystemColor controlShadow = new SystemColor((byte) CONTROL_SHADOW);
    /**
     * The dark shadow color for control objects.
     */
    public final static SystemColor controlDkShadow = new SystemColor((byte) CONTROL_DK_SHADOW);
    /**
     * The background color for scrollbars.
     */
    public final static SystemColor scrollbar = new SystemColor((byte) SCROLLBAR);
    /**
     * The background color for info(help) text.
     */
    public final static SystemColor info = new SystemColor((byte) INFO);
    /**
     * The text color for info(help) text.
     */
    public final static SystemColor infoText = new SystemColor((byte) INFO_TEXT);
    /*
     * System colors with default initial values, overwritten by toolkit if 
     * system values differ and are available.
     */
    private static int[] systemColors = {
            0xFF005C5C,  // desktop = new Color(0,92,92);
            0xFF000080,  // activeCaption = new Color(0,0,128);
            0xFFFFFFFF,  // activeCaptionText = Color.white;
            0xFFC0C0C0,  // activeCaptionBorder = Color.lightGray;
            0xFF808080,  // inactiveCaption = Color.gray;
            0xFFC0C0C0,  // inactiveCaptionText = Color.lightGray;
            0xFFC0C0C0,  // inactiveCaptionBorder = Color.lightGray;
            0xFFFFFFFF,  // window = Color.white;
            0xFF000000,  // windowBorder = Color.black;
            0xFF000000,  // windowText = Color.black;
            0xFFC0C0C0,  // menu = Color.lightGray;
            0xFF000000,  // menuText = Color.black;
            0xFFC0C0C0,  // text = Color.lightGray;
            0xFF000000,  // textText = Color.black;
            0xFF000080,  // textHighlight = new Color(0,0,128);
            0xFFFFFFFF,  // textHighlightText = Color.white;
            0xFF808080,  // textInactiveText = Color.gray;
            0xFFC0C0C0,  // control = Color.lightGray;
            0xFF000000,  // controlText = Color.black;
            0xFFFFFFFF,  // controlHighlight = Color.white;
            0xFFE0E0E0,  // controlLtHighlight = new Color(224,224,224);
            0xFF808080,  // controlShadow = Color.gray;
            0xFF000000,  // controlDkShadow = Color.black;
            0xFFE0E0E0,  // scrollbar = new Color(224,224,224);
            0xFFE0E000,  // info = new Color(224,224,0);
            0xFF000000,  // infoText = Color.black;
        };
    /*
     * JDK 1.1 serialVersionUID 
     */
    private static final long serialVersionUID = 4503142729533789064L;
    static {
        updateSystemColors();
    }
    /**
     * called from <init> & toolkit to update the above systemColors cache
     */
    private static void updateSystemColors() {
        Toolkit.getDefaultToolkit().loadSystemColors(systemColors);
    }

    /**
     * Create a symbolic color that represents an indexed entry into system
     * color cache. Used by above static system colors.
     */
    private SystemColor(byte index) {
        super(0, 0, 0);
        value = index;
    }

    /**
     * Gets the "current" RGB value representing the symbolic color.
     * (Bits 24-31 are 0xff, 16-23 are red, 8-15 are green, 0-7 are blue).
     * @see java.awt.image.ColorModel#getRGBdefault
     * @see java.awt.Color#getBlue
     * @see java.awt.Color#getGreen
     * @see java.awt.Color#getRed
     */
    public int getRGB() {
        return systemColors[value];
    }

    /**
     * Returns the String representation of this Color's values.
     */
    public String toString() {
        return getClass().getName() + "[i=" + (value) + "]";
    }
}