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1   /*
2    * Copyright (c) 1997, 2011, 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 sun.java2d.SunGraphics2D;
31  
32  /**
33   * This class implements a CompositePipe that renders path alpha tiles
34   * into a destination that supports direct alpha compositing of a solid
35   * color, according to one of the rules in the AlphaComposite class.
36   */
37  public class AlphaColorPipe implements CompositePipe, ParallelogramPipe {
38      public AlphaColorPipe() {
39      }
40  
41      public Object startSequence(SunGraphics2D sg, Shape s, Rectangle dev,
42                                  int[] abox) {
43          return sg;
44      }
45  
46      public boolean needTile(Object context, int x, int y, int w, int h) {
47          return true;
48      }
49  
50      public void renderPathTile(Object context,
51                                 byte[] atile, int offset, int tilesize,
52                                 int x, int y, int w, int h) {
53          SunGraphics2D sg = (SunGraphics2D) context;
54  
55          sg.alphafill.MaskFill(sg, sg.getSurfaceData(), sg.composite,
56                                x, y, w, h,
57                                atile, offset, tilesize);
58      }
59  
60      public void skipTile(Object context, int x, int y) {
61          return;
62      }
63  
64      public void endSequence(Object context) {
65          return;
66      }
67  
68      public void fillParallelogram(SunGraphics2D sg,
69                                    double ux1, double uy1,
70                                    double ux2, double uy2,
71                                    double x, double y,
72                                    double dx1, double dy1,
73                                    double dx2, double dy2)
74      {
75          sg.alphafill.FillAAPgram(sg, sg.getSurfaceData(), sg.composite,
76                                   x, y, dx1, dy1, dx2, dy2);
77      }
78  
79      public void drawParallelogram(SunGraphics2D sg,
80                                    double ux1, double uy1,
81                                    double ux2, double uy2,
82                                    double x, double y,
83                                    double dx1, double dy1,
84                                    double dx2, double dy2,
85                                    double lw1, double lw2)
86      {
87          sg.alphafill.DrawAAPgram(sg, sg.getSurfaceData(), sg.composite,
88                                   x, y, dx1, dy1, dx2, dy2, lw1, lw2);
89      }
90  }