JDK14/Java14源码在线阅读

/*
 * Copyright (c) 1997, 2003, 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
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package com.sun.java.swing.plaf.motif;

import sun.awt.AppContext;

import java.awt.*;
import java.awt.event.*;

import javax.swing.*;
import javax.swing.border.*;
import javax.swing.plaf.*;
import javax.swing.plaf.basic.*;


/**
 * BasicToggleButton implementation
 * <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 Rich Schiavi
 */
public class MotifToggleButtonUI extends BasicToggleButtonUI
{
    private static final Object MOTIF_TOGGLE_BUTTON_UI_KEY = new Object();

    protected Color selectColor;

    private boolean defaults_initialized = false;

    // ********************************
    //         Create PLAF
    // ********************************
    public static ComponentUI createUI(JComponent b) {
        AppContext appContext = AppContext.getAppContext();
        MotifToggleButtonUI motifToggleButtonUI =
                (MotifToggleButtonUI) appContext.get(MOTIF_TOGGLE_BUTTON_UI_KEY);
        if (motifToggleButtonUI == null) {
            motifToggleButtonUI = new MotifToggleButtonUI();
            appContext.put(MOTIF_TOGGLE_BUTTON_UI_KEY, motifToggleButtonUI);
        }
        return motifToggleButtonUI;
    }

    // ********************************
    //          Install Defaults
    // ********************************
    public void installDefaults(AbstractButton b) {
        super.installDefaults(b);
        if(!defaults_initialized) {
            selectColor = UIManager.getColor(getPropertyPrefix() + "select");
            defaults_initialized = true;
        }
        LookAndFeel.installProperty(b, "opaque", Boolean.FALSE);
    }

    protected void uninstallDefaults(AbstractButton b) {
        super.uninstallDefaults(b);
        defaults_initialized = false;
    }

    // ********************************
    //          Default Accessors
    // ********************************

    protected Color getSelectColor() {
        return selectColor;
    }

    // ********************************
    //         Paint Methods
    // ********************************
    protected void paintButtonPressed(Graphics g, AbstractButton b) {
        if (b.isContentAreaFilled()) {
            Color oldColor = g.getColor();
            Dimension size = b.getSize();
            Insets insets = b.getInsets();
            Insets margin = b.getMargin();

            if(b.getBackground() instanceof UIResource) {
                g.setColor(getSelectColor());
            }
            g.fillRect(insets.left - margin.left,

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