/* * Copyright (c) 2001, 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.lang.ref.WeakReference;import sun.java2d.loops.GraphicsPrimitive;import sun.java2d.SurfaceData;import sun.java2d.pipe.Region; /** * ScaledBlit * 1) copies rectangle of pixels from one surface to another *    while scaling the pixels to meet the sizes specified * 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 ScaledBlit extends GraphicsPrimitive{    public static final String methodSignature = "ScaledBlit(...)".toString();     public static final int primTypeID = makePrimTypeID();     private static RenderCache blitcache = new RenderCache(20);     public static ScaledBlit locate(SurfaceType srctype,                              CompositeType comptype,                              SurfaceType dsttype)    {        return (ScaledBlit)            GraphicsPrimitiveMgr.locate(primTypeID,                                        srctype, comptype, dsttype);    }     public static ScaledBlit getFromCache(SurfaceType src,                                          CompositeType comp,                                          SurfaceType dst)    {        Object o = blitcache.get(src, comp, dst);        if (o != null) {            return (ScaledBlit) o;        }        ScaledBlit 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 ScaledBlit(SurfaceType srctype,                   CompositeType comptype,                   SurfaceType dsttype)    {        super(methodSignature, primTypeID, srctype, comptype, dsttype);    }     public ScaledBlit(long pNativePrim,                      SurfaceType srctype,                      CompositeType comptype,                      SurfaceType dsttype)    {        super(pNativePrim, methodSignature, primTypeID,              srctype, comptype, dsttype);    }     public native void Scale(SurfaceData src, SurfaceData dst,                             Composite comp, Region clip,                             int sx1, int sy1,                             int sx2, int sy2,                             double dx1, double dy1,                             double dx2, double dy2);     static {        GraphicsPrimitiveMgr.registerGeneral(new ScaledBlit(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);        */        return null;    }     public GraphicsPrimitive traceWrap() {        return new TraceScaledBlit(this);    }     private static class TraceScaledBlit extends ScaledBlit {        ScaledBlit target;         public TraceScaledBlit(ScaledBlit target) {            super(target.getSourceType(),                  target.getCompositeType(),                  target.getDestType());            this.target = target;        }         public GraphicsPrimitive traceWrap() {            return this;        }         public void Scale(SurfaceData src, SurfaceData dst,                          Composite comp, Region clip,                          int sx1, int sy1,                          int sx2, int sy2,                          double dx1, double dy1,                          double dx2, double dy2)        {            tracePrimitive(target);            target.Scale(src, dst, comp, clip,                         sx1, sy1, sx2, sy2,                         dx1, dy1, dx2, dy2);        }    }}