1 /*
2  * Copyright (c) 2004, 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
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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.
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24  */
25 
26 package sun.java2d.loops;
27 
28 import java.awt.Composite;
29 import java.awt.geom.AffineTransform;
30 import java.lang.ref.WeakReference;
31 import sun.java2d.SurfaceData;
32 import sun.java2d.loops.GraphicsPrimitive;
33 import sun.java2d.pipe.Region;
34 
35 /**
36  * TransformHelper
37  * 1) applies an AffineTransform to a rectangle of pixels while copying
38  *    from one surface to another
39  * 2) performs compositing of colors based upon a Composite
40  *    parameter
41  *
42  * precise behavior is undefined if the source surface
43  * and the destination surface are the same surface
44  * with overlapping regions of pixels
45  */
46 public class TransformHelper extends GraphicsPrimitive
47 {
48     public static final String methodSignature =
49         "TransformHelper(...)".toString();
50 
51     public static final int primTypeID = makePrimTypeID();
52 
53     private static RenderCache helpercache = new RenderCache(10);
54 
locate(SurfaceType srctype)55     public static TransformHelper locate(SurfaceType srctype) {
56         return (TransformHelper)
57             GraphicsPrimitiveMgr.locate(primTypeID,
58                                         srctype,
59                                         CompositeType.SrcNoEa,
60                                         SurfaceType.IntArgbPre);
61     }
62 
getFromCache(SurfaceType src)63     public static synchronized TransformHelper getFromCache(SurfaceType src) {
64         Object o = helpercache.get(src, null, null);
65         if (o != null) {
66             return (TransformHelper) o;
67         }
68         TransformHelper helper = locate(src);
69         if (helper == null) {
70             /*
71             System.out.println("helper loop not found for:");
72             System.out.println("src:  "+src);
73             */
74         } else {
75             helpercache.put(src, null, null, helper);
76         }
77         return helper;
78     }
79 
TransformHelper(SurfaceType srctype)80     protected TransformHelper(SurfaceType srctype) {
81         super(methodSignature, primTypeID, srctype,
82               CompositeType.SrcNoEa,
83               SurfaceType.IntArgbPre);
84     }
85 
TransformHelper(long pNativePrim, SurfaceType srctype, CompositeType comptype, SurfaceType dsttype)86     public TransformHelper(long pNativePrim, SurfaceType srctype,
87                            CompositeType comptype,
88                            SurfaceType dsttype)
89     {
90         super(pNativePrim, methodSignature, primTypeID,
91               srctype, comptype, dsttype);
92     }
93 
Transform(MaskBlit output, SurfaceData src, SurfaceData dst, Composite comp, Region clip, AffineTransform itx, int txtype, int sx1, int sy1, int sx2, int sy2, int dx1, int dy1, int dx2, int dy2, int edges[], int dxoff, int dyoff)94     public native void Transform(MaskBlit output,
95                                  SurfaceData src, SurfaceData dst,
96                                  Composite comp, Region clip,
97                                  AffineTransform itx, int txtype,
98                                  int sx1, int sy1, int sx2, int sy2,
99                                  int dx1, int dy1, int dx2, int dy2,
100                                  int edges[], int dxoff, int dyoff);
101 
makePrimitive(SurfaceType srctype, CompositeType comptype, SurfaceType dsttype)102     public GraphicsPrimitive makePrimitive(SurfaceType srctype,
103                                            CompositeType comptype,
104                                            SurfaceType dsttype)
105     {
106         return null;
107     }
108 
traceWrap()109     public GraphicsPrimitive traceWrap() {
110         return new TraceTransformHelper(this);
111     }
112 
113     private static class TraceTransformHelper extends TransformHelper {
114         TransformHelper target;
115 
TraceTransformHelper(TransformHelper target)116         public TraceTransformHelper(TransformHelper target) {
117             super(target.getSourceType());
118             this.target = target;
119         }
120 
traceWrap()121         public GraphicsPrimitive traceWrap() {
122             return this;
123         }
124 
Transform(MaskBlit output, SurfaceData src, SurfaceData dst, Composite comp, Region clip, AffineTransform itx, int txtype, int sx1, int sy1, int sx2, int sy2, int dx1, int dy1, int dx2, int dy2, int edges[], int dxoff, int dyoff)125         public void Transform(MaskBlit output,
126                               SurfaceData src, SurfaceData dst,
127                               Composite comp, Region clip,
128                               AffineTransform itx, int txtype,
129                               int sx1, int sy1, int sx2, int sy2,
130                               int dx1, int dy1, int dx2, int dy2,
131                               int edges[], int dxoff, int dyoff)
132         {
133             tracePrimitive(target);
134             target.Transform(output, src, dst, comp, clip, itx, txtype,
135                              sx1, sy1, sx2, sy2,
136                              dx1, dy1, dx2, dy2,
137                              edges, dxoff, dyoff);
138         }
139     }
140 }
141