/*

 * Copyright (c) 2000, 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

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package sun.java2d.loops;

import sun.java2d.loops.GraphicsPrimitive;

import sun.java2d.pipe.Region;

import sun.java2d.SunGraphics2D;

import sun.java2d.SurfaceData;

import sun.font.GlyphList;

/**

 *   DrawGlyphListAA - loops for AATextRenderer pipe

 *   1) draw anti-aliased text onto destination surface

 *   2) must accept output area [x, y, dx, dy]

 *      from within the surface description data for clip rect

 */

public class DrawGlyphListAA extends GraphicsPrimitive {

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

    public final static int primTypeID = makePrimTypeID();

    public static DrawGlyphListAA locate(SurfaceType srctype,

                                   CompositeType comptype,

                                   SurfaceType dsttype)

    {

        return (DrawGlyphListAA)

            GraphicsPrimitiveMgr.locate(primTypeID,

                                        srctype, comptype, dsttype);

    }

    protected DrawGlyphListAA(SurfaceType srctype,

                         CompositeType comptype,

                         SurfaceType dsttype)

    {

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

    }

    public DrawGlyphListAA(long pNativePrim,

                           SurfaceType srctype,

                           CompositeType comptype,

                           SurfaceType dsttype)

    {

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

    }

    public native void DrawGlyphListAA(SunGraphics2D sg2d, SurfaceData dest,

                                       GlyphList srcData);

    static {

        GraphicsPrimitiveMgr.registerGeneral(

                                   new DrawGlyphListAA(null, null, null));

    }

    public GraphicsPrimitive makePrimitive(SurfaceType srctype,

                                           CompositeType comptype,

                                           SurfaceType dsttype) {

        return new General(srctype, comptype, dsttype);

    }

    public static class General extends DrawGlyphListAA {

        MaskFill maskop;

        public General(SurfaceType srctype,

                       CompositeType comptype,

                       SurfaceType dsttype)

        {

            super(srctype, comptype, dsttype);

            maskop = MaskFill.locate(srctype, comptype, dsttype);

        }

        public void DrawGlyphListAA(SunGraphics2D sg2d, SurfaceData dest,

                                    GlyphList gl)

        {

            gl.getBounds(); // Don't delete, bug 4895493

            int num = gl.getNumGlyphs();

            Region clip = sg2d.getCompClip();

            int cx1 = clip.getLoX();

            int cy1 = clip.getLoY();

            int cx2 = clip.getHiX();

            int cy2 = clip.getHiY();

            for (int i = 0; i < num; i++) {

                gl.setGlyphIndex(i);

                int metrics[] = gl.getMetrics();

                int gx1 = metrics[0];

                int gy1 = metrics[1];

                int w = metrics[2];

                int gx2 = gx1 + w;

                int gy2 = gy1 + metrics[3];

                int off = 0;

                if (gx1 < cx1) {

                    off = cx1 - gx1;

                    gx1 = cx1;

                }

                if (gy1 < cy1) {

                    off += (cy1 - gy1) * w;

                    gy1 = cy1;

                }

                if (gx2 > cx2) gx2 = cx2;

                if (gy2 > cy2) gy2 = cy2;

                if (gx2 > gx1 && gy2 > gy1) {

                    byte alpha[] = gl.getGrayBits();

                    maskop.MaskFill(sg2d, dest, sg2d.composite,

                                    gx1, gy1, gx2 - gx1, gy2 - gy1,

                                    alpha, off, w);

                }

            }

        }

    }

    public GraphicsPrimitive traceWrap() {

        return new TraceDrawGlyphListAA(this);

    }

    private static class TraceDrawGlyphListAA extends DrawGlyphListAA {

        DrawGlyphListAA target;

        public TraceDrawGlyphListAA(DrawGlyphListAA target) {

            super(target.getSourceType(),

                  target.getCompositeType(),

                  target.getDestType());

            this.target = target;

        }

        public GraphicsPrimitive traceWrap() {

            return this;

        }

        public void DrawGlyphListAA(SunGraphics2D sg2d, SurfaceData dest,

                                    GlyphList glyphs)

        {

            tracePrimitive(target);

            target.DrawGlyphListAA(sg2d, dest, glyphs);

        }

    }

}