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