xpstyle.java

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/*
 * @(#)XPStyle.java	1.28 07/01/09
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

/*
 * <p>These classes are designed to be used while the
 * corresponding <code>LookAndFeel</code> class has been installed
 * (<code>UIManager.setLookAndFeel(new <i>XXX</i>LookAndFeel())</code>).
 * Using them while a different <code>LookAndFeel</code> is installed
 * may produce unexpected results, including exceptions.
 * Additionally, changing the <code>LookAndFeel</code>
 * maintained by the <code>UIManager</code> without updating the
 * corresponding <code>ComponentUI</code> of any
 * <code>JComponent</code>s may also produce unexpected results,
 * such as the wrong colors showing up, and is generally not
 * encouraged.
 * 
 */

package com.sun.java.swing.plaf.windows;

import java.awt.*;
import java.awt.image.*;
import java.io.*;
import java.security.AccessController;
import java.util.*;
import java.util.prefs.*;

import javax.swing.*;
import javax.swing.border.*;
import javax.swing.plaf.*;
import javax.swing.text.JTextComponent;

import sun.awt.windows.ThemeReader;
import sun.security.action.GetPropertyAction;
import sun.swing.CachedPainter;

import com.sun.java.swing.plaf.windows.TMSchema.*;

/**
 * Implements Windows XP Styles for the Windows Look and Feel.
 *
 * @version 1.28 01/09/07
 * @author Leif Samuelsson
 */
class XPStyle {
    // Singleton instance of this class
    private static XPStyle xp;

    // Singleton instance of SkinPainter
    private static SkinPainter skinPainter = new SkinPainter();

    private static Boolean themeActive = null;

    private HashMap<String, Border> borderMap;
    private HashMap<String, Color>  colorMap;

    private boolean flatMenus;

    static {
        invalidateStyle();
    }

    /** Static method for clearing the hashmap and loading the
     * current XP style and theme
     */
    static synchronized void invalidateStyle() {
        xp = null;
        themeActive = null;
    }

    /** Get the singleton instance of this class
     *
     * @return the singleton instance of this class or null if XP styles
     * are not active or if this is not Windows XP
     */
    static synchronized XPStyle getXP() {
        if (themeActive == null) {
            Toolkit toolkit = Toolkit.getDefaultToolkit();
            themeActive =
                (Boolean)toolkit.getDesktopProperty("win.xpstyle.themeActive");
            if (themeActive == null) {
                themeActive = Boolean.FALSE;
            }
            if (themeActive.booleanValue()) {
                GetPropertyAction propertyAction =
                    new GetPropertyAction("swing.noxp");
                if (AccessController.doPrivileged(propertyAction) == null &&
                    ThemeReader.isThemed() &&
                    !(UIManager.getLookAndFeel()
                      instanceof WindowsClassicLookAndFeel)) {

                    xp = new XPStyle();
                }
            }
        }
        return xp;
    }



    /** Get a named <code>String</code> value from the current style
     *
     * @param part a <code>Part</code>
     * @param state a <code>String</code>
     * @param attributeKey a <code>String</code>
     * @return a <code>String</code> or null if key is not found
     *    in the current style
     *
     * This is currently only used by WindowsInternalFrameTitlePane for painting
     * title foregound and can be removed when no longer needed
     */
    String getString(Component c, Part part, State state, Prop prop) {
        return getTypeEnumName(c, part, state, prop);
    }

    private static String getTypeEnumName(Component c, Part part, State state, Prop prop) {
        int enumValue = ThemeReader.getEnum(part.getControlName(c), part.getValue(),
                                            State.getValue(part, state),
                                            prop.getValue());
        if (enumValue == -1) {
            return null;
        }
        return TypeEnum.getTypeEnum(prop, enumValue).getName();
    }




    /** Get a named <code>int</code> value from the current style
     *
     * @param part a <code>Part</code>
     * @return an <code>int</code> or null if key is not found
     *    in the current style
     */
    int getInt(Component c, Part part, State state, Prop prop, int fallback) {
        return ThemeReader.getInt(part.getControlName(c), part.getValue(),
                                  State.getValue(part, state),
                                  prop.getValue());
    }

    /** Get a named <code>Dimension</code> value from the current style
     *
     * @param key a <code>String</code>
     * @return a <code>Dimension</code> or null if key is not found
     *    in the current style
     *
     * This is currently only used by WindowsProgressBarUI and the value
     * should probably be cached there instead of here.
     */
    Dimension getDimension(Component c, Part part, State state, Prop prop) {
        return ThemeReader.getPosition(part.getControlName(c), part.getValue(),
                                       State.getValue(part, state),
                                       prop.getValue());
    }

    /** Get a named <code>Point</code> (e.g. a location or an offset) value
     *  from the current style
     *
     * @param key a <code>String</code>
     * @return a <code>Point</code> or null if key is not found
     *    in the current style
     *
     * This is currently only used by WindowsInternalFrameTitlePane for painting
     * title foregound and can be removed when no longer needed
     */
    Point getPoint(Component c, Part part, State state, Prop prop) {
        Dimension d = ThemeReader.getPosition(part.getControlName(c), part.getValue(),
                                              State.getValue(part, state),
                                              prop.getValue());
        if (d != null) {
            return new Point(d.width, d.height);
        } else {
            return null;
        }
    }

    /** Get a named <code>Insets</code> value from the current style
     *
     * @param key a <code>String</code>
     * @return an <code>Insets</code> object or null if key is not found
     *    in the current style
     *
     * This is currently only used to create borders and by
     * WindowsInternalFrameTitlePane for painting title foregound.
     * The return value is already cached in those places.
     */
    Insets getMargin(Component c, Part part, State state, Prop prop) {
        return ThemeReader.getThemeMargins(part.getControlName(c), part.getValue(),
                                           State.getValue(part, state),
                                           prop.getValue());
    }


    /** Get a named <code>Color</code> value from the current style
     *
     * @param part a <code>Part</code>
     * @return a <code>Color</code> or null if key is not found
     *    in the current style
     */
    synchronized Color getColor(Skin skin, Prop prop, Color fallback) {
        String key = skin.toString() + "." + prop.name();
        Part part = skin.part;
        Color color = colorMap.get(key);
        if (color == null) {
            color = ThemeReader.getColor(part.getControlName(null), part.getValue(),
                                         State.getValue(part, skin.state),
                                         prop.getValue());
            if (color != null) {
                color = new ColorUIResource(color);
                colorMap.put(key, color);
            }
        }
        return (color != null) ? color : fallback;
    }

    Color getColor(Component c, Part part, State state, Prop prop, Color fallback) {
        return getColor(new Skin(c, part, state), prop, fallback);
    }



    /** Get a named <code>Border</code> value from the current style
     *
     * @param part a <code>Part</code>
     * @return a <code>Border</code> or null if key is not found
     *    in the current style or if the style for the particular
     *    part is not defined as "borderfill".
     */
    synchronized Border getBorder(Component c, Part part) {
        if (part == Part.MENU) {
            // Special case because XP has no skin for menus
            if (flatMenus) {
                // TODO: The classic border uses this color, but we should
                // create a new UI property called "PopupMenu.borderColor"
                // instead.
                return new XPFillBorder(UIManager.getColor("InternalFrame.borderShadow"),
                                        1);
            } else {
                return null;    // Will cause L&F to use classic border
            }
        }
        Skin skin = new Skin(c, part, null);
        Border border = borderMap.get(skin.string);
        if (border == null) {
            String bgType = getTypeEnumName(c, part, null, Prop.BGTYPE);
            if ("borderfill".equalsIgnoreCase(bgType)) {
                int thickness = getInt(c, part, null, Prop.BORDERSIZE, 1);
                Color color = getColor(skin, Prop.BORDERCOLOR, Color.black);
                border = new XPFillBorder(color, thickness);
            } else if ("imagefile".equalsIgnoreCase(bgType)) {
                Insets m = getMargin(c, part, null, Prop.SIZINGMARGINS);
                if (m != null) {
                    if (getBoolean(c, part, null, Prop.BORDERONLY)) {
                        border = new XPImageBorder(c, part);
                    } else {
                        if(part == Part.TP_BUTTON) {
                            border = new XPEmptyBorder(new Insets(3,3,3,3));
                        } else {
                            border = new XPEmptyBorder(m);
                        }
                    }
                }
            }
            if (border != null) {
                borderMap.put(skin.string, border);
            }
        }
        return border;
    }

    private class XPFillBorder extends LineBorder implements UIResource {
        XPFillBorder(Color color, int thickness) {
            super(color, thickness);
        }

        public Insets getBorderInsets(Component c)       {
            return getBorderInsets(c, new Insets(0,0,0,0));
        }

        public Insets getBorderInsets(Component c, Insets insets)       {
            Insets margin = null;
            //
            // Ideally we'd have an interface defined for classes which
            // support margins (to avoid this hackery), but we've
            // decided against it for simplicity
            //
           if (c instanceof AbstractButton) {
               margin = ((AbstractButton)c).getMargin();
           } else if (c instanceof JToolBar) {
               margin = ((JToolBar)c).getMargin();
           } else if (c instanceof JTextComponent) {
               margin = ((JTextComponent)c).getMargin();
           }
           insets.top    = (margin != null? margin.top : 0)    + thickness;
           insets.left   = (margin != null? margin.left : 0)   + thickness;
           insets.bottom = (margin != null? margin.bottom : 0) + thickness;
           insets.right =  (margin != null? margin.right : 0)  + thickness;
               
           return insets;
        }
    }

    private class XPImageBorder extends AbstractBorder implements UIResource {
        Skin skin;

        XPImageBorder(Component c, Part part) {
            this.skin = getSkin(c, part);
        }

        public void paintBorder(Component c, Graphics g,
                                int x, int y, int width, int height) {
            skin.paintSkin(g, x, y, width, height, null);
        }

        public Insets getBorderInsets(Component c)       {
            return getBorderInsets(c, new Insets(0,0,0,0));
        }

        public Insets getBorderInsets(Component c, Insets insets)       {
            Insets margin = null;
            Insets borderInsets = skin.getContentMargin();
            //
            // Ideally we'd have an interface defined for classes which
            // support margins (to avoid this hackery), but we've