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1   /*
2    * Copyright (c) 2001, 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.Color;
29  import java.awt.Image;
30  import java.awt.image.BufferedImage;
31  import java.awt.image.BufferedImageOp;
32  import java.awt.image.ImageObserver;
33  import java.awt.geom.AffineTransform;
34  import sun.java2d.SunGraphics2D;
35  
36  /**
37   * This interface defines the set of calls that pipeline objects
38   * can use to pass on responsibility for performing various
39   * image copy commands.
40   * There are 3 types of image copies handled by this class:
41   *    - copyImage: These methods simply copy the pixels
42   *      from the src to dest, either from (0, 0) (implicit)
43   *      or from a given (sx, sy) location.
44   *    - scaleImage: These methods copy from src to dest while
45   *      scaling the source image.  The src and dest rectangles
46   *      are used to specify the scale.
47   *    - copyImageBg: These methods behave the same as the
48   *      copyImage methods except they substitute the given
49   *      background color for any transparent pixels.
50   *    - scaleImageBg: These methods behave the same as the
51   *      scaleImage methods except they substitute the given
52   *      background color for any transparent pixels.
53   *    - transformImage....
54   */
55  public interface DrawImagePipe {
56  
57      public boolean copyImage(SunGraphics2D sg, Image img,
58                               int x, int y,
59                               Color bgColor,
60                               ImageObserver observer);
61  
62      public boolean copyImage(SunGraphics2D sg, Image img,
63                               int dx, int dy, int sx, int sy, int w, int h,
64                               Color bgColor,
65                               ImageObserver observer);
66  
67      public boolean scaleImage(SunGraphics2D sg, Image img, int x, int y,
68                                int width, int height,
69                                Color bgColor,
70                                ImageObserver observer);
71  
72      public boolean scaleImage(SunGraphics2D sg, Image img,
73                                int dx1, int dy1, int dx2, int dy2,
74                                int sx1, int sy1, int sx2, int sy2,
75                                Color bgColor,
76                                ImageObserver observer);
77  
78      public boolean transformImage(SunGraphics2D sg, Image img,
79                                    AffineTransform atfm,
80                                    ImageObserver observer);
81  
82      public void transformImage(SunGraphics2D sg, BufferedImage img,
83                                 BufferedImageOp op, int x, int y);
84  
85  
86  }