JDK8/Java8源码在线阅读

/*
 * Copyright (c) 1997, 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
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package sun.java2d.pipe;

import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.geom.Arc2D;
import java.awt.geom.Ellipse2D;
import java.awt.geom.Line2D;
import java.awt.geom.RoundRectangle2D;
import java.awt.geom.GeneralPath;
import sun.java2d.SunGraphics2D;

/**
 * This class converts calls to the basic pixel rendering methods
 * into calls to a generic Shape rendering pipeline.
 */
public class PixelToShapeConverter
    implements PixelDrawPipe, PixelFillPipe
{
    ShapeDrawPipe outpipe;

    public PixelToShapeConverter(ShapeDrawPipe pipe) {
        outpipe = pipe;
    }

    public void drawLine(SunGraphics2D sg,
                         int x1, int y1, int x2, int y2) {
        outpipe.draw(sg, new Line2D.Float(x1, y1, x2, y2));
    }

    public void drawRect(SunGraphics2D sg,
                         int x, int y, int w, int h) {
        outpipe.draw(sg, new Rectangle(x, y, w, h));
    }

    public void fillRect(SunGraphics2D sg,
                         int x, int y, int w, int h) {
        outpipe.fill(sg, new Rectangle(x, y, w, h));
    }

    public void drawRoundRect(SunGraphics2D sg,
                              int x, int y, int w, int h,
                              int aW, int aH) {
        outpipe.draw(sg, new RoundRectangle2D.Float(x, y, w, h, aW, aH));
    }

    public void fillRoundRect(SunGraphics2D sg,
                              int x, int y, int w, int h,
                              int aW, int aH) {
        outpipe.fill(sg, new RoundRectangle2D.Float(x, y, w, h, aW, aH));
    }

    public void drawOval(SunGraphics2D sg,
                         int x, int y, int w, int h) {
        outpipe.draw(sg, new Ellipse2D.Float(x, y, w, h));
    }

    public void fillOval(SunGraphics2D sg,
                         int x, int y, int w, int h) {
        outpipe.fill(sg, new Ellipse2D.Float(x, y, w, h));
    }

    public void drawArc(SunGraphics2D sg,
                        int x, int y, int w, int h,
                        int start, int extent) {
        outpipe.draw(sg, new Arc2D.Float(x, y, w, h,
                                         start, extent, Arc2D.OPEN));
    }

    public void fillArc(SunGraphics2D sg,
                        int x, int y, int w, int h,
                        int start, int extent) {
        outpipe.fill(sg, new Arc2D.Float(x, y, w, h,
                                         start, extent, Arc2D.PIE));
    }

    private Shape makePoly(int xPoints[], int yPoints[],
                           int nPoints, boolean close) {
        GeneralPath gp = new GeneralPath(GeneralPath.WIND_EVEN_ODD);
        if (nPoints > 0) {
            gp.moveTo(xPoints[0], yPoints[0]);
            for (int i = 1; i < nPoints; i++) {
                gp.lineTo(xPoints[i], yPoints[i]);
            }
            if (close) {
                gp.closePath();
            }
        }
        return gp;
    }

    public void drawPolyline(SunGraphics2D sg,
                             int xPoints[], int yPoints[],
                             int nPoints) {

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