Java Graphics Clip subtractClip(final Graphics g, final Shape clip)

Description

subtract Clip

License

Open Source License

Declaration

public static Shape subtractClip(final Graphics g, final Shape clip) 

Method Source Code

//package com.java2s;
/*//  ww w.  j a  va2 s . c o  m
 * This file is part of WebLookAndFeel library.
 *
 * WebLookAndFeel library is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * WebLookAndFeel library 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with WebLookAndFeel library.  If not, see <http://www.gnu.org/licenses/>.
 */

import java.awt.*;
import java.awt.geom.Area;

public class Main {
    public static Shape subtractClip(final Graphics g, final Shape clip) {
        return subtractClip(g, clip, true);
    }

    public static Shape subtractClip(final Graphics g, final Shape clip, final boolean shouldSetup) {
        if (shouldSetup && clip != null) {
            final Shape oldClip = g.getClip();
            if (oldClip != null) {
                // Area-based substraction
                final Area finalClip = new Area(oldClip);
                finalClip.subtract(new Area(clip));
                g.setClip(finalClip);
            }
            return oldClip;
        } else {
            return null;
        }
    }
}

Related

1. mergeClip(Graphics g, Shape clip)
2. resetClip(Graphics g)
3. restoreClip(final Graphics g, final Shape clip)