windowstogglebuttonui.java

来自「JAVA 所有包」· Java 代码 · 共 157 行

/*
 * @(#)WindowsToggleButtonUI.java	1.34 06/04/04
 *
 * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

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.
 *
 * @version 1.34 04/04/06
 * @author Jeff Dinkins
 */
public class WindowsToggleButtonUI extends BasicToggleButtonUI
{
    protected static int dashedRectGapX;
    protected static int dashedRectGapY;
    protected static int dashedRectGapWidth;
    protected static int dashedRectGapHeight;

    protected Color focusColor;
    
    private final static WindowsToggleButtonUI windowsToggleButtonUI = new WindowsToggleButtonUI();

    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;
    }
}