JDK14/Java14源码在线阅读

/*
 *
 * 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
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package java2d.demos.Lines;


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.Shape;
import java.awt.font.FontRenderContext;
import java.awt.font.TextLayout;
import java.awt.geom.Arc2D;
import java.awt.geom.CubicCurve2D;
import java.awt.geom.Ellipse2D;
import java.awt.geom.QuadCurve2D;
import java.awt.geom.Rectangle2D;
import java.awt.geom.RoundRectangle2D;
import java2d.Surface;


/**
 * Various shapes stroked with a dashing pattern.
 */
@SuppressWarnings("serial")
public class Dash extends Surface {

    public Dash() {
        setBackground(WHITE);
    }

    @Override
    public void render(int w, int h, Graphics2D g2) {
        FontRenderContext frc = g2.getFontRenderContext();
        Font font = g2.getFont();
        TextLayout tl = new TextLayout("Dashes", font, frc);
        float sw = (float) tl.getBounds().getWidth();
        float sh = tl.getAscent() + tl.getDescent();
        g2.setColor(BLACK);
        tl.draw(g2, (w / 2 - sw / 2), sh + 5);

        BasicStroke dotted = new BasicStroke(3, BasicStroke.CAP_ROUND,
                BasicStroke.JOIN_ROUND, 0, new float[] { 0, 6, 0, 6 }, 0);
        g2.setStroke(dotted);
        g2.drawRect(3, 3, w - 6, h - 6);

        int x = 0;
        int y = h - 34;
        BasicStroke[] bs = new BasicStroke[6];

        float j = 1.1f;
        for (int i = 0; i < bs.length; i++, j += 1.0f) {
            float[] dash = { j };
            BasicStroke b = new BasicStroke(1.0f, BasicStroke.CAP_BUTT,
                    BasicStroke.JOIN_MITER, 10.0f, dash, 0.0f);
            g2.setStroke(b);
            g2.drawLine(20, y, w - 20, y);
            bs[i] = new BasicStroke(3.0f, BasicStroke.CAP_BUTT,
                    BasicStroke.JOIN_MITER, 10.0f, dash, 0.0f);
            y += 5;
        }

        Shape shape = null;
        y = 0;
        for (int i = 0; i < 6; i++) {
            x = (i == 0 || i == 3) ? (w / 3 - w / 5) / 2 : x + w / 3;
            y = (i <= 2) ? (int) sh + h / 12 : h / 2;

            g2.setStroke(bs[i]);
            g2.translate(x, y);
            switch (i) {
                case 0:
                    shape = new Arc2D.Float(0.0f, 0.0f, w / 5, h / 4, 45, 270,
                            Arc2D.PIE);
                    break;
                case 1:
                    shape = new Ellipse2D.Float(0.0f, 0.0f, w / 5, h / 4);
                    break;
                case 2:
                    shape = new RoundRectangle2D.Float(0.0f, 0.0f, w / 5, h / 4,
                            10.0f, 10.0f);
                    break;
                case 3:
                    shape = new Rectangle2D.Float(0.0f, 0.0f, w / 5, h / 4);
                    break;
                case 4:

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