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/* * Copyright (c) 1999, 2004, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package sun.java2d.loops; import java.awt.Composite;import java.awt.CompositeContext;import java.awt.RenderingHints;import java.awt.image.ColorModel;import java.awt.image.Raster;import java.awt.image.WritableRaster;import java.lang.ref.WeakReference;import sun.java2d.loops.GraphicsPrimitive;import sun.java2d.SurfaceData;import sun.java2d.pipe.Region;import sun.java2d.pipe.SpanIterator; /** * Blit * 1) copies rectangle of pixels from one surface to another * 2) performs compositing of colors based upon a Composite *    parameter * * precise behavior is undefined if the source surface * and the destination surface are the same surface * with overlapping regions of pixels */ public class Blit extends GraphicsPrimitive{    public static final String methodSignature = "Blit(...)".toString();     public static final int primTypeID = makePrimTypeID();     private static RenderCache blitcache = new RenderCache(20);     public static Blit locate(SurfaceType srctype,                              CompositeType comptype,                              SurfaceType dsttype)    {        return (Blit)            GraphicsPrimitiveMgr.locate(primTypeID,                                        srctype, comptype, dsttype);    }     public static Blit getFromCache(SurfaceType src,                                    CompositeType comp,                                    SurfaceType dst)    {        Object o = blitcache.get(src, comp, dst);        if (o != null) {            return (Blit) o;        }         Blit blit = locate(src, comp, dst);        if (blit == null) {            System.out.println("blit loop not found for:");            System.out.println("src:  "+src);            System.out.println("comp: "+comp);            System.out.println("dst:  "+dst);        } else {            blitcache.put(src, comp, dst, blit);        }        return blit;    }     protected Blit(SurfaceType srctype,                   CompositeType comptype,                   SurfaceType dsttype)    {        super(methodSignature, primTypeID, srctype, comptype, dsttype);    }     public Blit(long pNativePrim,                SurfaceType srctype,                CompositeType comptype,                SurfaceType dsttype)    {        super(pNativePrim, methodSignature, primTypeID, srctype, comptype, dsttype);    }     /**     * All Blit implementors must have this invoker method     */    public native void Blit(SurfaceData src, SurfaceData dst,                            Composite comp, Region clip,                            int srcx, int srcy,                            int dstx, int dsty,                            int width, int height);     static {        GraphicsPrimitiveMgr.registerGeneral(new Blit(null, null, null));    }     public GraphicsPrimitive makePrimitive(SurfaceType srctype,                                           CompositeType comptype,                                           SurfaceType dsttype)    {        /*        System.out.println("Constructing general blit for:");        System.out.println("src:  "+srctype);        System.out.println("comp: "+comptype);        System.out.println("dst:  "+dsttype);        */         if (comptype.isDerivedFrom(CompositeType.Xor)) {            GeneralXorBlit gxb = new GeneralXorBlit(srctype,                                                    comptype,                                                    dsttype);            setupGeneralBinaryOp(gxb);            return gxb;        } else if (comptype.isDerivedFrom(CompositeType.AnyAlpha)) {            return new GeneralMaskBlit(srctype, comptype, dsttype);        } else {            return AnyBlit.instance;        }    }     private static class AnyBlit extends Blit {        public static AnyBlit instance = new AnyBlit();         public AnyBlit() {            super(SurfaceType.Any, CompositeType.Any, SurfaceType.Any);        }         public void Blit(SurfaceData srcData,                         SurfaceData dstData,                         Composite comp,                         Region clip,                         int srcx, int srcy,                         int dstx, int dsty,                         int width, int height)        {            ColorModel srcCM = srcData.getColorModel();            ColorModel dstCM = dstData.getColorModel();            // REMIND: Should get RenderingHints from sg2d            CompositeContext ctx = comp.createContext(srcCM, dstCM,                                                      new RenderingHints(null));            Raster srcRas = srcData.getRaster(srcx, srcy, width, height);            WritableRaster dstRas =                (WritableRaster) dstData.getRaster(dstx, dsty, width, height);             if (clip == null) {                clip = Region.getInstanceXYWH(dstx, dsty, width, height);            }            int span[] = {dstx, dsty, dstx+width, dsty+height};            SpanIterator si = clip.getSpanIterator(span);            srcx -= dstx;            srcy -= dsty;            while (si.nextSpan(span)) {                int w = span[2] - span[0];                int h = span[3] - span[1];                srcRas = srcRas.createChild(srcx + span[0], srcy + span[1],                                            w, h, 0, 0, null);                dstRas = dstRas.createWritableChild(span[0], span[1],                                                    w, h, 0, 0, null);                ctx.compose(srcRas, dstRas, dstRas);            }            ctx.dispose();        }    }     private static class GeneralMaskBlit extends Blit {        MaskBlit performop;         public GeneralMaskBlit(SurfaceType srctype,                               CompositeType comptype,                               SurfaceType dsttype)        {            super(srctype, comptype, dsttype);            performop = MaskBlit.locate(srctype, comptype, dsttype);        }         public void Blit(SurfaceData srcData,                         SurfaceData dstData,                         Composite comp,                         Region clip,                         int srcx, int srcy,                         int dstx, int dsty,                         int width, int height)        {            performop.MaskBlit(srcData, dstData, comp, clip,                               srcx, srcy, dstx, dsty,                               width, height,                               null, 0, 0);        }    }     private static class GeneralXorBlit        extends Blit        implements GeneralBinaryOp    {        Blit convertsrc;        Blit convertdst;        Blit performop;        Blit convertresult;         WeakReference srcTmp;        WeakReference dstTmp;         public GeneralXorBlit(SurfaceType srctype,                              CompositeType comptype,                              SurfaceType dsttype)        {            super(srctype, comptype, dsttype);        }         public void setPrimitives(Blit srcconverter,                                  Blit dstconverter,                                  GraphicsPrimitive genericop,                                  Blit resconverter)        {            this.convertsrc = srcconverter;            this.convertdst = dstconverter;            this.performop = (Blit) genericop;            this.convertresult = resconverter;        }         public synchronized void Blit(SurfaceData srcData,                                      SurfaceData dstData,                                      Composite comp,                                      Region clip,                                      int srcx, int srcy,                                      int dstx, int dsty,                                      int width, int height)        {            SurfaceData src, dst;            Region opclip;            int sx, sy, dx, dy;             if (convertsrc == null) {                src = srcData;                sx = srcx;                sy = srcy;            } else {                SurfaceData cachedSrc = null;                if (srcTmp != null) {                    cachedSrc = (SurfaceData) srcTmp.get();                }                src = convertFrom(convertsrc, srcData, srcx, srcy,                                  width, height, cachedSrc);                sx = 0;                sy = 0;                if (src != cachedSrc) {                    srcTmp = new WeakReference(src);                }            }             if (convertdst == null) {                dst = dstData;                dx = dstx;                dy = dsty;                opclip = clip;            } else {                // assert: convertresult != null                SurfaceData cachedDst = null;                if (dstTmp != null) {                    cachedDst = (SurfaceData) dstTmp.get();                }                dst = convertFrom(convertdst, dstData, dstx, dsty,                                  width, height, cachedDst);                dx = 0;                dy = 0;                opclip = null;                if (dst != cachedDst) {                    dstTmp = new WeakReference(dst);                }            }             performop.Blit(src, dst, comp, opclip,                           sx, sy, dx, dy,                           width, height);             if (convertresult != null) {                // assert: convertdst != null                convertTo(convertresult, dst, dstData, clip,                          dstx, dsty, width, height);            }        }    }     public GraphicsPrimitive traceWrap() {        return new TraceBlit(this);    }     private static class TraceBlit extends Blit {        Blit target;         public TraceBlit(Blit target) {            super(target.getSourceType(),                  target.getCompositeType(),                  target.getDestType());            this.target = target;        }         public GraphicsPrimitive traceWrap() {            return this;        }         public void Blit(SurfaceData src, SurfaceData dst,                         Composite comp, Region clip,                         int srcx, int srcy, int dstx, int dsty,                         int width, int height)        {            tracePrimitive(target);            target.Blit(src, dst, comp, clip,                        srcx, srcy, dstx, dsty, width, height);        }    }}