/*

 * 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);

        }

    }

}