JDK8/Java8源码在线阅读

/*
 * Copyright (c) 1998, 2013, 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
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 */

package javax.swing.plaf.metal;

import javax.swing.*;

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.plaf.*;

/**
 * CheckboxIcon implementation for OrganicCheckBoxUI
 * <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.  As of 1.4, support for long term storage
 * of all JavaBeans&trade;
 * has been added to the <code>java.beans</code> package.
 * Please see {@link java.beans.XMLEncoder}.
 *
 * @author Steve Wilson
 */
public class MetalCheckBoxIcon implements Icon, UIResource, Serializable {

    protected int getControlSize() { return 13; }

    public void paintIcon(Component c, Graphics g, int x, int y) {

        JCheckBox cb = (JCheckBox)c;
        ButtonModel model = cb.getModel();
        int controlSize = getControlSize();

        boolean drawCheck = model.isSelected();

        if (model.isEnabled()) {
            if(cb.isBorderPaintedFlat()) {
                g.setColor(MetalLookAndFeel.getControlDarkShadow());
                g.drawRect(x+1, y, controlSize-1, controlSize-1);
            }
            if (model.isPressed() && model.isArmed()) {
                if(cb.isBorderPaintedFlat()) {
                    g.setColor(MetalLookAndFeel.getControlShadow());
                    g.fillRect(x+2, y+1, controlSize-2, controlSize-2);
                } else {
                    g.setColor(MetalLookAndFeel.getControlShadow());
                    g.fillRect(x, y, controlSize-1, controlSize-1);
                    MetalUtils.drawPressed3DBorder(g, x, y, controlSize, controlSize);
                }
            } else if(!cb.isBorderPaintedFlat()) {
                MetalUtils.drawFlush3DBorder(g, x, y, controlSize, controlSize);
            }
            g.setColor( MetalLookAndFeel.getControlInfo() );
        } else {
            g.setColor( MetalLookAndFeel.getControlShadow() );
            g.drawRect( x, y, controlSize-1, controlSize-1);
        }


        if(drawCheck) {
            if (cb.isBorderPaintedFlat()) {
                x++;
            }
            drawCheck(c,g,x,y);
        }
    }


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