/*

 * Copyright 1997-2006 Sun Microsystems, Inc.  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.  Sun designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

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

import javax.swing.plaf.basic.*;

import javax.swing.border.*;

import javax.swing.plaf.*;

import javax.swing.*;

import java.awt.*;

import java.beans.PropertyChangeEvent;

/**

 * A Windows toggle button.

 * <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 Jeff Dinkins

 */

public class WindowsToggleButtonUI extends BasicToggleButtonUI

{

    protected Color focusColor;

    private boolean defaults_initialized = false;

    public static ComponentUI createUI(JComponent b) {

        return windowsToggleButtonUI;

    }

    // ********************************

    //            Defaults

    // ********************************

    protected void installDefaults(AbstractButton b) {

        super.installDefaults(b);

        if(!defaults_initialized) {

            String pp = getPropertyPrefix();

            dashedRectGapX = ((Integer)UIManager.get("Button.dashedRectGapX")).intValue();

            dashedRectGapY = ((Integer)UIManager.get("Button.dashedRectGapY")).intValue();

            dashedRectGapWidth = ((Integer)UIManager.get("Button.dashedRectGapWidth")).intValue();

            dashedRectGapHeight = ((Integer)UIManager.get("Button.dashedRectGapHeight")).intValue();

            focusColor = UIManager.getColor(pp + "focus");

            defaults_initialized = true;

        }

        XPStyle xp = XPStyle.getXP();

        if (xp != null) {

            b.setBorder(xp.getBorder(b, WindowsButtonUI.getXPButtonType(b)));

            LookAndFeel.installProperty(b, "opaque", Boolean.FALSE);

            LookAndFeel.installProperty(b, "rolloverEnabled", Boolean.TRUE);

        }

    }

    protected void uninstallDefaults(AbstractButton b) {

        super.uninstallDefaults(b);

        defaults_initialized = false;

    }

    protected Color getFocusColor() {

        return focusColor;

    }

    // ********************************

    //         Paint Methods

    // ********************************

    private transient Color cachedSelectedColor = null;

    private transient Color cachedBackgroundColor = null;

    private transient Color cachedHighlightColor = null;

    protected void paintButtonPressed(Graphics g, AbstractButton b) {

        if (XPStyle.getXP() == null && b.isContentAreaFilled()) {

            Color oldColor = g.getColor();

            Color c1 = b.getBackground();

            Color c2 = UIManager.getColor("ToggleButton.highlight");

            if (c1 != cachedBackgroundColor || c2 != cachedHighlightColor) {

                int r1 = c1.getRed(), r2 = c2.getRed();

                int g1 = c1.getGreen(), g2 = c2.getGreen();

                int b1 = c1.getBlue(), b2 = c2.getBlue();

                cachedSelectedColor = new Color(

                        Math.min(r1, r2) + Math.abs(r1 - r2) / 2,

                        Math.min(g1, g2) + Math.abs(g1 - g2) / 2,

                        Math.min(b1, b2) + Math.abs(b1 - b2) / 2

                );

                cachedBackgroundColor = c1;

                cachedHighlightColor = c2;

            }

            g.setColor(cachedSelectedColor);

            g.fillRect(0, 0, b.getWidth(), b.getHeight());

            g.setColor(oldColor);

        }

    }

    public void paint(Graphics g, JComponent c) {

        if (XPStyle.getXP() != null) {

            WindowsButtonUI.paintXPButtonBackground(g, c);

        }

        super.paint(g, c);

    }

    /**

     * Overridden method to render the text without the mnemonic

     */

    protected void paintText(Graphics g, AbstractButton b, Rectangle textRect, String text) {

        WindowsGraphicsUtils.paintText(g, b, textRect, text, getTextShiftOffset());

    }

    protected void paintFocus(Graphics g, AbstractButton b,

                              Rectangle viewRect, Rectangle textRect, Rectangle iconRect) {

        g.setColor(getFocusColor());

        BasicGraphicsUtils.drawDashedRect(g, dashedRectGapX, dashedRectGapY,

                                          b.getWidth() - dashedRectGapWidth,

                                          b.getHeight() - dashedRectGapHeight);

    }

    // ********************************

    //          Layout Methods

    // ********************************

    public Dimension getPreferredSize(JComponent c) {

        Dimension d = super.getPreferredSize(c);

        /* Ensure that the width and height of the button is odd,

         * to allow for the focus line if focus is painted

         */

        AbstractButton b = (AbstractButton)c;

        if (d != null && b.isFocusPainted()) {

            if(d.width % 2 == 0) { d.width += 1; }

            if(d.height % 2 == 0) { d.height += 1; }

        }

        return d;

    }

}