/*

 * Copyright (c) 1999, 2008, 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.Font;

import java.awt.Color;

import java.awt.Composite;

import java.awt.AlphaComposite;

import java.awt.Transparency;

import java.awt.image.ColorModel;

import java.awt.image.WritableRaster;

import java.awt.image.BufferedImage;

import sun.awt.image.BufImgSurfaceData;

import sun.java2d.loops.GraphicsPrimitive;

import sun.java2d.SurfaceData;

import sun.java2d.SunGraphics2D;

import sun.java2d.pipe.Region;

/**

 * BlitBg

 * 1) copies rectangle of pixels from one surface to another

 * 2) performs compositing of colors based upon a Composite

 *    parameter

 * 3) assumes that non-opaque pixels are to be blended with

 *    the indicated Bg color before compositing with the

 *    destination

 *

 * precise behavior is undefined if the source surface

 * and the destination surface are the same surface

 * with overlapping regions of pixels

 */

public class BlitBg extends GraphicsPrimitive

{

    public static final String methodSignature = "BlitBg(...)".toString();

    public static final int primTypeID = makePrimTypeID();

    private static RenderCache blitcache = new RenderCache(20);

    public static BlitBg locate(SurfaceType srctype,

                                CompositeType comptype,

                                SurfaceType dsttype)

    {

        return (BlitBg)

            GraphicsPrimitiveMgr.locate(primTypeID,

                                        srctype, comptype, dsttype);

    }

    public static BlitBg getFromCache(SurfaceType src,

                                      CompositeType comp,

                                      SurfaceType dst)

    {

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

        if (o != null) {

            return (BlitBg) o;

        }

        BlitBg blit = locate(src, comp, dst);

        if (blit == null) {

            System.out.println("blitbg 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 BlitBg(SurfaceType srctype,

                     CompositeType comptype,

                     SurfaceType dsttype)

    {

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

    }

    public BlitBg(long pNativePrim,

                  SurfaceType srctype,

                  CompositeType comptype,

                  SurfaceType dsttype)

    {

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

    }

    /**

     * All BlitBg implementors must have this invoker method

     */

    public native void BlitBg(SurfaceData src, SurfaceData dst,

                              Composite comp, Region clip,

                              int bgColor,

                              int srcx, int srcy,

                              int dstx, int dsty,

                              int width, int height);

    static {

        GraphicsPrimitiveMgr.registerGeneral(new BlitBg(null, null, null));

    }

    public GraphicsPrimitive makePrimitive(SurfaceType srctype,

                                           CompositeType comptype,

                                           SurfaceType dsttype)

    {

        /*

        System.out.println("Constructing general blitbg for:");

        System.out.println("src:  "+srctype);

        System.out.println("comp: "+comptype);

        System.out.println("dst:  "+dsttype);

        */

        return new General(srctype, comptype, dsttype);

    }

    private static class General extends BlitBg {

        CompositeType compositeType;

        public General(SurfaceType srctype,

                       CompositeType comptype,

                       SurfaceType dsttype)

        {

            super(srctype, comptype, dsttype);

            compositeType = comptype;

        }

        @Override

        public void BlitBg(SurfaceData srcData,

                           SurfaceData dstData,

                           Composite comp,

                           Region clip,

                           int bgArgb,

                           int srcx, int srcy,

                           int dstx, int dsty,

                           int width, int height)

        {

            ColorModel dstModel = dstData.getColorModel();

            boolean bgHasAlpha = (bgArgb >>> 24) != 0xff;

            if (!dstModel.hasAlpha() && bgHasAlpha) {

                dstModel = ColorModel.getRGBdefault();

            }

            WritableRaster wr =

                dstModel.createCompatibleWritableRaster(width, height);

            boolean isPremult = dstModel.isAlphaPremultiplied();

            BufferedImage bimg =

                new BufferedImage(dstModel, wr, isPremult, null);

            SurfaceData tmpData = BufImgSurfaceData.createData(bimg);

            Color bgColor = new Color(bgArgb, bgHasAlpha);

            SunGraphics2D sg2d = new SunGraphics2D(tmpData, bgColor, bgColor,

                                                   defaultFont);

            FillRect fillop = FillRect.locate(SurfaceType.AnyColor,

                                              CompositeType.SrcNoEa,

                                              tmpData.getSurfaceType());

            Blit combineop = Blit.getFromCache(srcData.getSurfaceType(),

                                               CompositeType.SrcOverNoEa,

                                               tmpData.getSurfaceType());

            Blit blitop = Blit.getFromCache(tmpData.getSurfaceType(), compositeType,

                                            dstData.getSurfaceType());

            fillop.FillRect(sg2d, tmpData, 0, 0, width, height);

            combineop.Blit(srcData, tmpData, AlphaComposite.SrcOver, null,

                           srcx, srcy, 0, 0, width, height);

            blitop.Blit(tmpData, dstData, comp, clip,

                        0, 0, dstx, dsty, width, height);

        }

        private static Font defaultFont = new Font("Dialog", Font.PLAIN, 12);

    }

    public GraphicsPrimitive traceWrap() {

        return new TraceBlitBg(this);

    }

    private static class TraceBlitBg extends BlitBg {

        BlitBg target;

        public TraceBlitBg(BlitBg target) {

            super(target.getSourceType(),

                  target.getCompositeType(),

                  target.getDestType());

            this.target = target;

        }

        public GraphicsPrimitive traceWrap() {

            return this;

        }

        @Override

        public void BlitBg(SurfaceData src, SurfaceData dst,

                           Composite comp, Region clip,

                           int bgColor,

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

                           int width, int height)

        {

            tracePrimitive(target);

            target.BlitBg(src, dst, comp, clip, bgColor,

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

        }

    }

}