src/demo/share/jfc/J2Ddemo/java2d/demos/Lines/Caps.java

/*
 *
 * Copyright (c) 2007, 2018, Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package java2d.demos.Lines;


import static java.awt.BasicStroke.CAP_BUTT;
import static java.awt.BasicStroke.CAP_ROUND;
import static java.awt.BasicStroke.CAP_SQUARE;
import static java.awt.BasicStroke.JOIN_MITER;
import static java.awt.Color.BLACK;
import static java.awt.Color.WHITE;
import java.awt.BasicStroke;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.font.FontRenderContext;
import java.awt.font.TextLayout;
import java.awt.geom.Line2D;
import java2d.Surface;


/**
 * Shows the three different styles of stroke ending.
 */
@SuppressWarnings("serial")
public class Caps extends Surface {

    private static int[] cap = { CAP_BUTT, CAP_ROUND, CAP_SQUARE };
    private static String[] desc = { "Butt Cap", "Round Cap", "Square Cap" };

    public Caps() {
        setBackground(WHITE);
    }

    @Override
    public void render(int w, int h, Graphics2D g2) {
        FontRenderContext frc = g2.getFontRenderContext();
        Font font = g2.getFont();
        g2.setColor(BLACK);
        for (int i = 0; i < cap.length; i++) {
            g2.setStroke(new BasicStroke(15, cap[i], JOIN_MITER));
            g2.draw(new Line2D.Float(w / 4, (i + 1) * h / 4, w - w / 4, (i + 1)
                    * h / 4));
            TextLayout tl = new TextLayout(desc[i], font, frc);
            tl.draw(g2, (float) (w / 2 - tl.getBounds().getWidth() / 2), (i + 1)
                    * h / 4 - 10);
        }
    }

    public static void main(String[] s) {
        createDemoFrame(new Caps());
    }
}