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Java example source code file (DrawGlyphList.java)

This example Java source code file (DrawGlyphList.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

compositetype, don\'t, drawglyphlist, font, general, graphicsprimitive, java2d, maskfill, region, string, surfacedata, surfacetype, tracedrawglyphlist

The DrawGlyphList.java Java example source code

/*
 * Copyright (c) 2000, 2003, 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 sun.java2d.loops.GraphicsPrimitive;
import sun.java2d.pipe.Region;
import sun.java2d.SunGraphics2D;
import sun.java2d.SurfaceData;
import sun.font.GlyphList;

/**
 *   DrawGlyphList - loops for SolidTextRenderer pipe.
 *   1) draw solid color text onto destination surface
 *   2) must accept output area [x, y, dx, dy]
 *      from within the surface description data for clip rect
 */
public class DrawGlyphList extends GraphicsPrimitive {

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

    public final static int primTypeID = makePrimTypeID();

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

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

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


    public native void DrawGlyphList(SunGraphics2D sg2d, SurfaceData dest,
                                     GlyphList srcData);

    // This instance is used only for lookup.
    static {
        GraphicsPrimitiveMgr.registerGeneral(
                                new DrawGlyphList(null, null, null));
    }

    public GraphicsPrimitive makePrimitive(SurfaceType srctype,
                                           CompositeType comptype,
                                           SurfaceType dsttype) {
        return new General(srctype, comptype, dsttype);
    }

    private static class General extends DrawGlyphList {
        MaskFill maskop;

        public General(SurfaceType srctype,
                       CompositeType comptype,
                       SurfaceType dsttype)
        {
            super(srctype, comptype, dsttype);
            maskop = MaskFill.locate(srctype, comptype, dsttype);
        }

        public void DrawGlyphList(SunGraphics2D sg2d, SurfaceData dest,
                                  GlyphList gl) {

            int strbounds[] = 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 TraceDrawGlyphList(this);
    }

    private static class TraceDrawGlyphList extends DrawGlyphList {
        DrawGlyphList target;

        public TraceDrawGlyphList(DrawGlyphList target) {
            super(target.getSourceType(),
                  target.getCompositeType(),
                  target.getDestType());
            this.target = target;
        }

        public GraphicsPrimitive traceWrap() {
            return this;
        }

        public void DrawGlyphList(SunGraphics2D sg2d, SurfaceData dest,
                                  GlyphList glyphs)
        {
            tracePrimitive(target);
            target.DrawGlyphList(sg2d, dest, glyphs);
        }
    }
}

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