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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * published by the Free Software Foundation.  Oracle designates this
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 * 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).
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 * 2 along with this work; if not, write to the Free Software Foundation,
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package sun.java2d.loops;

import java.awt.Paint;
import java.awt.PaintContext;
import java.awt.Composite;
import java.awt.Rectangle;
import java.awt.image.ColorModel;
import java.awt.image.BufferedImage;
import java.awt.image.WritableRaster;
import sun.awt.image.BufImgSurfaceData;
import sun.java2d.loops.GraphicsPrimitive;
import sun.java2d.SunGraphics2D;
import sun.java2d.SurfaceData;

MaskFill
1) fills rectangles of pixels on a surface
2) performs compositing of colors based upon a Composite
   parameter
3) blends result of composite with destination using an
   alpha coverage mask
4) the mask may be null in which case it should be treated
   as if it were an array of all opaque values (0xff)
/**
 * MaskFill
 * 1) fills rectangles of pixels on a surface
 * 2) performs compositing of colors based upon a Composite
 *    parameter
 * 3) blends result of composite with destination using an
 *    alpha coverage mask
 * 4) the mask may be null in which case it should be treated
 *    as if it were an array of all opaque values (0xff)
 */
public class MaskFill extends GraphicsPrimitive
{
    public static final String methodSignature = "MaskFill(...)".toString();

    public static final int primTypeID = makePrimTypeID();

    private static RenderCache fillcache = new RenderCache(10);

    public static MaskFill locate(SurfaceType srctype,
                                  CompositeType comptype,
                                  SurfaceType dsttype)
    {
        return (MaskFill)
            GraphicsPrimitiveMgr.locate(primTypeID,
                                        srctype, comptype, dsttype);
    }

    public static MaskFill locatePrim(SurfaceType srctype,
                                      CompositeType comptype,
                                      SurfaceType dsttype)
    {
        return (MaskFill)
            GraphicsPrimitiveMgr.locatePrim(primTypeID,
                                            srctype, comptype, dsttype);
    }

    /*
     * Note that this uses locatePrim, not locate, so it can return
     * null if there is no specific loop to handle this op...
     */
    public static MaskFill getFromCache(SurfaceType src,
                                        CompositeType comp,
                                        SurfaceType dst)
    {
        Object o = fillcache.get(src, comp, dst);
        if (o != null) {
            return (MaskFill) o;
        }
        MaskFill fill = locatePrim(src, comp, dst);
        if (fill != null) {
            fillcache.put(src, comp, dst, fill);
        }
        return fill;
    }

    protected MaskFill(SurfaceType srctype,
                       CompositeType comptype,
                       SurfaceType dsttype)
    {
        super(methodSignature, primTypeID, srctype, comptype, dsttype);
    }

    public MaskFill(long pNativePrim,
                    SurfaceType srctype,
                    CompositeType comptype,
                    SurfaceType dsttype)
    {
        super(pNativePrim, methodSignature, primTypeID, srctype, comptype, dsttype);
    }

    
All MaskFill implementors must have this invoker method
/**
     * All MaskFill implementors must have this invoker method
     */
    public native void MaskFill(SunGraphics2D sg2d, SurfaceData sData,
                                Composite comp,
                                int x, int y, int w, int h,
                                byte[] mask, int maskoff, int maskscan);

    static {
        GraphicsPrimitiveMgr.registerGeneral(new MaskFill(null, null, null));
    }

    public GraphicsPrimitive makePrimitive(SurfaceType srctype,
                                           CompositeType comptype,
                                           SurfaceType dsttype)
    {
        if (SurfaceType.OpaqueColor.equals(srctype) ||
            SurfaceType.AnyColor.equals(srctype))
        {
            if (CompositeType.Xor.equals(comptype)) {
                throw new InternalError("Cannot construct MaskFill for " +
                                        "XOR mode");
            } else {
                return new General(srctype, comptype, dsttype);
            }
        } else {
            throw new InternalError("MaskFill can only fill with colors");
        }
    }

    private static class General extends MaskFill {
        FillRect fillop;
        MaskBlit maskop;

        public General(SurfaceType srctype,
                       CompositeType comptype,
                       SurfaceType dsttype)
        {
            super(srctype, comptype, dsttype);
            fillop = FillRect.locate(srctype,
                                     CompositeType.SrcNoEa,
                                     SurfaceType.IntArgb);
            maskop = MaskBlit.locate(SurfaceType.IntArgb, comptype, dsttype);
        }

        public void MaskFill(SunGraphics2D sg2d,
                             SurfaceData sData,
                             Composite comp,
                             int x, int y, int w, int h,
                             byte mask[], int offset, int scan)
        {
            BufferedImage dstBI =
                new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
            SurfaceData tmpData = BufImgSurfaceData.createData(dstBI);

            // REMIND: This is not pretty.  It would be nicer if we
            // passed a "FillData" object to the Pixel loops, instead
            // of a SunGraphics2D parameter...
            int pixel = sg2d.pixel;
            sg2d.pixel = tmpData.pixelFor(sg2d.getColor());
            fillop.FillRect(sg2d, tmpData, 0, 0, w, h);
            sg2d.pixel = pixel;

            maskop.MaskBlit(tmpData, sData, comp, null,
                            0, 0, x, y, w, h,
                            mask, offset, scan);
        }
    }

    public GraphicsPrimitive traceWrap() {
        return new TraceMaskFill(this);
    }

    private static class TraceMaskFill extends MaskFill {
        MaskFill target;

        public TraceMaskFill(MaskFill target) {
            super(target.getSourceType(),
                  target.getCompositeType(),
                  target.getDestType());
            this.target = target;
        }

        public GraphicsPrimitive traceWrap() {
            return this;
        }

        public void MaskFill(SunGraphics2D sg2d, SurfaceData sData,
                             Composite comp,
                             int x, int y, int w, int h,
                             byte[] mask, int maskoff, int maskscan)
        {
            tracePrimitive(target);
            target.MaskFill(sg2d, sData, comp, x, y, w, h,
                            mask, maskoff, maskscan);
        }
    }
}