Package com.sun.java.swing.plaf.windows

Source Code of com.sun.java.swing.plaf.windows.WindowsMenuItemUI

/*
* Copyright (c) 1997, 2006, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code 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.  Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 in the LICENSE file that
* accompanied this code).
*
* 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/

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

import java.awt.*;
import javax.swing.*;
import javax.swing.plaf.*;
import javax.swing.plaf.basic.*;

import sun.swing.SwingUtilities2;

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

/**
* Windows rendition of the component.
* <p>
* <strong>Warning:</strong>
* Serialized objects of this class will not be compatible with
* future Swing releases.  The current serialization support is appropriate
* for short term storage or RMI between applications running the same
* version of Swing.  A future release of Swing will provide support for
* long term persistence.
*
* @author Igor Kushnirskiy
*/

public class WindowsMenuItemUI extends BasicMenuItemUI {
    final WindowsMenuItemUIAccessor accessor =
        new  WindowsMenuItemUIAccessor() {

            public JMenuItem getMenuItem() {
                return menuItem;
            }

            public State getState(JMenuItem menuItem) {
                return WindowsMenuItemUI.getState(this, menuItem);
            }

            public Part getPart(JMenuItem menuItem) {
                return WindowsMenuItemUI.getPart(this, menuItem);
            }
    };
    public static ComponentUI createUI(JComponent c) {
        return new WindowsMenuItemUI();
    }

    /**
     * Method which renders the text of the current menu item.
     * <p>
     * @param g Graphics context
     * @param menuItem Current menu item to render
     * @param textRect Bounding rectangle to render the text.
     * @param text String to render
     */
    protected void paintText(Graphics g, JMenuItem menuItem,
                             Rectangle textRect, String text) {
        if (WindowsMenuItemUI.isVistaPainting()) {
            WindowsMenuItemUI.paintText(accessor, g, menuItem, textRect, text);
            return;
        }
        ButtonModel model = menuItem.getModel();
        Color oldColor = g.getColor();

        if(model.isEnabled() &&
            (model.isArmed() || (menuItem instanceof JMenu &&
             model.isSelected()))) {
            g.setColor(selectionForeground); // Uses protected field.
        }

        WindowsGraphicsUtils.paintText(g, menuItem, textRect, text, 0);

        g.setColor(oldColor);
    }

    @Override
    protected void paintBackground(Graphics g, JMenuItem menuItem,
            Color bgColor) {
        if (WindowsMenuItemUI.isVistaPainting()) {
            WindowsMenuItemUI.paintBackground(accessor, g, menuItem, bgColor);
            return;
        }
        super.paintBackground(g, menuItem, bgColor);
    }

    static void paintBackground(WindowsMenuItemUIAccessor menuItemUI,
            Graphics g, JMenuItem menuItem, Color bgColor) {
        assert isVistaPainting();
        if (isVistaPainting()) {
            int menuWidth = menuItem.getWidth();
            int menuHeight = menuItem.getHeight();
            if (menuItem.isOpaque()) {
                Color oldColor = g.getColor();
                g.setColor(menuItem.getBackground());
                g.fillRect(0,0, menuWidth, menuHeight);
                g.setColor(oldColor);
            }
            XPStyle xp = XPStyle.getXP();
            Part part = menuItemUI.getPart(menuItem);
            Skin skin = xp.getSkin(menuItem, part);
            skin.paintSkin(g, 0 , 0,
                menuWidth,
                menuHeight,
                menuItemUI.getState(menuItem));
        }
    }

    static void paintText(WindowsMenuItemUIAccessor menuItemUI, Graphics g,
                                JMenuItem menuItem, Rectangle textRect,
                                String text) {
        assert isVistaPainting();
        if (isVistaPainting()) {
            State state = menuItemUI.getState(menuItem);

            /* part of it copied from WindowsGraphicsUtils.java */
            FontMetrics fm = SwingUtilities2.getFontMetrics(menuItem, g);
            int mnemIndex = menuItem.getDisplayedMnemonicIndex();
            // W2K Feature: Check to see if the Underscore should be rendered.
            if (WindowsLookAndFeel.isMnemonicHidden() == true) {
                mnemIndex = -1;
            }
            WindowsGraphicsUtils.paintXPText(menuItem,
                menuItemUI.getPart(menuItem), state,
                g, textRect.x,
                textRect.y + fm.getAscent(),
                text, mnemIndex);
        }
    }

    static State getState(WindowsMenuItemUIAccessor menuItemUI, JMenuItem menuItem) {
        State state;
        ButtonModel model = menuItem.getModel();
        if (model.isArmed()) {
            state = (model.isEnabled()) ? State.HOT : State.DISABLEDHOT;
        } else {
            state = (model.isEnabled()) ? State.NORMAL : State.DISABLED;
        }
        return state;
    }

    static Part getPart(WindowsMenuItemUIAccessor menuItemUI, JMenuItem menuItem) {
        return Part.MP_POPUPITEM;
    }

    /*
     * TODO idk can we use XPStyle.isVista?
     * is it possible that in some theme some Vista parts are not defined while
     * others are?
     */
    static boolean isVistaPainting() {
        XPStyle xp = XPStyle.getXP();
        return xp != null && xp.isSkinDefined(null, Part.MP_POPUPITEM);
    }
}
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