/*

 * 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

 * particular file as subject to the "Classpath" exception as provided

 *

 * 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.

 *

 */

package sun.java2d.loops;

import java.awt.Composite;

import java.awt.geom.AffineTransform;

import java.lang.ref.WeakReference;

import sun.java2d.SurfaceData;

import sun.java2d.loops.GraphicsPrimitive;

import sun.java2d.pipe.Region;

/**

 * TransformBlit

 * 1) applies an AffineTransform to a rectangle of pixels while copying

 *    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 TransformBlit extends GraphicsPrimitive

{

    public static final String methodSignature =

        "TransformBlit(...)".toString();

    public static final int primTypeID = makePrimTypeID();

    private static RenderCache blitcache = new RenderCache(10);

    public static TransformBlit locate(SurfaceType srctype,

                                       CompositeType comptype,

                                       SurfaceType dsttype)

    {

        return (TransformBlit)

            GraphicsPrimitiveMgr.locate(primTypeID,

                                        srctype, comptype, dsttype);

    }

    public static TransformBlit getFromCache(SurfaceType src,

                                             CompositeType comp,

                                             SurfaceType dst)

    {

        Object o = blitcache.get(src, comp, dst);

        if (o != null) {

            return (TransformBlit) o;

        }

        TransformBlit 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 TransformBlit(SurfaceType srctype,

                            CompositeType comptype,

                            SurfaceType dsttype)

    {

        super(methodSignature, primTypeID, srctype, comptype, dsttype);

    }

    public TransformBlit(long pNativePrim,

                         SurfaceType srctype,

                         CompositeType comptype,

                         SurfaceType dsttype)

    {

        super(pNativePrim, methodSignature, primTypeID,

              srctype, comptype, dsttype);

    }

    public native void Transform(SurfaceData src, SurfaceData dst,

                                 Composite comp, Region clip,

                                 AffineTransform at, int hint,

                                 int srcx, int srcy, int dstx, int dsty,

                                 int width, int height);

    // REMIND: do we have a general loop?

    static {

        GraphicsPrimitiveMgr.registerGeneral(new TransformBlit(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 TraceTransformBlit(this);

    }

    private static class TraceTransformBlit extends TransformBlit {

        TransformBlit target;

        public TraceTransformBlit(TransformBlit target) {

            super(target.getSourceType(),

                  target.getCompositeType(),

                  target.getDestType());

            this.target = target;

        }

        public GraphicsPrimitive traceWrap() {

            return this;

        }

        public void Transform(SurfaceData src, SurfaceData dst,

                              Composite comp, Region clip,

                              AffineTransform at, int hint,

                              int srcx, int srcy, int dstx, int dsty,

                              int width, int height)

        {

            tracePrimitive(target);

            target.Transform(src, dst, comp, clip, at, hint,

                             srcx, srcy, dstx, dsty, width, height);

        }

    }

}