1 /*
   2  * Copyright (c) 1997, 1998, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.java2d.pipe;
  27 
  28 import java.awt.Rectangle;
  29 import java.awt.Shape;
  30 import java.awt.geom.Arc2D;
  31 import java.awt.geom.Ellipse2D;
  32 import java.awt.geom.Line2D;
  33 import java.awt.geom.RoundRectangle2D;
  34 import java.awt.geom.GeneralPath;
  35 import sun.java2d.SunGraphics2D;
  36 
  37 /**
  38  * This class converts calls to the basic pixel rendering methods
  39  * into calls to a generic Shape rendering pipeline.
  40  */
  41 public class PixelToShapeConverter
  42     implements PixelDrawPipe, PixelFillPipe
  43 {
  44     ShapeDrawPipe outpipe;
  45 
  46     public PixelToShapeConverter(ShapeDrawPipe pipe) {
  47         outpipe = pipe;
  48     }
  49 
  50     public void drawLine(SunGraphics2D sg,
  51                          int x1, int y1, int x2, int y2) {
  52         outpipe.draw(sg, new Line2D.Float(x1, y1, x2, y2));
  53     }
  54 
  55     public void drawRect(SunGraphics2D sg,
  56                          int x, int y, int w, int h) {
  57         outpipe.draw(sg, new Rectangle(x, y, w, h));
  58     }
  59 
  60     public void fillRect(SunGraphics2D sg,
  61                          int x, int y, int w, int h) {
  62         outpipe.fill(sg, new Rectangle(x, y, w, h));
  63     }
  64 
  65     public void drawRoundRect(SunGraphics2D sg,
  66                               int x, int y, int w, int h,
  67                               int aW, int aH) {
  68         outpipe.draw(sg, new RoundRectangle2D.Float(x, y, w, h, aW, aH));
  69     }
  70 
  71     public void fillRoundRect(SunGraphics2D sg,
  72                               int x, int y, int w, int h,
  73                               int aW, int aH) {
  74         outpipe.fill(sg, new RoundRectangle2D.Float(x, y, w, h, aW, aH));
  75     }
  76 
  77     public void drawOval(SunGraphics2D sg,
  78                          int x, int y, int w, int h) {
  79         outpipe.draw(sg, new Ellipse2D.Float(x, y, w, h));
  80     }
  81 
  82     public void fillOval(SunGraphics2D sg,
  83                          int x, int y, int w, int h) {
  84         outpipe.fill(sg, new Ellipse2D.Float(x, y, w, h));
  85     }
  86 
  87     public void drawArc(SunGraphics2D sg,
  88                         int x, int y, int w, int h,
  89                         int start, int extent) {
  90         outpipe.draw(sg, new Arc2D.Float(x, y, w, h,
  91                                          start, extent, Arc2D.OPEN));
  92     }
  93 
  94     public void fillArc(SunGraphics2D sg,
  95                         int x, int y, int w, int h,
  96                         int start, int extent) {
  97         outpipe.fill(sg, new Arc2D.Float(x, y, w, h,
  98                                          start, extent, Arc2D.PIE));
  99     }
 100 
 101     private Shape makePoly(int xPoints[], int yPoints[],
 102                            int nPoints, boolean close) {
 103         GeneralPath gp = new GeneralPath(GeneralPath.WIND_EVEN_ODD);
 104         if (nPoints > 0) {
 105             gp.moveTo(xPoints[0], yPoints[0]);
 106         }
 107         for (int i = 1; i < nPoints; i++) {
 108             gp.lineTo(xPoints[i], yPoints[i]);
 109         }
 110         if (close) {
 111             gp.closePath();
 112         }
 113         return gp;
 114     }
 115 
 116     public void drawPolyline(SunGraphics2D sg,
 117                              int xPoints[], int yPoints[],
 118                              int nPoints) {
 119         outpipe.draw(sg, makePoly(xPoints, yPoints, nPoints, false));
 120     }
 121 
 122     public void drawPolygon(SunGraphics2D sg,
 123                             int xPoints[], int yPoints[],
 124                             int nPoints) {
 125         outpipe.draw(sg, makePoly(xPoints, yPoints, nPoints, true));
 126     }
 127 
 128     public void fillPolygon(SunGraphics2D sg,
 129                             int xPoints[], int yPoints[],
 130                             int nPoints) {
 131         outpipe.fill(sg, makePoly(xPoints, yPoints, nPoints, true));
 132     }
 133 }