1 /*

     2  * Copyright (c) 2000, 2004, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

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

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package sun.java2d.loops;

    27 

    28 import sun.java2d.loops.GraphicsPrimitive;

    29 import sun.java2d.pipe.Region;

    30 import sun.java2d.SunGraphics2D;

    31 import sun.java2d.SurfaceData;

    32 import sun.font.GlyphList;

    33 

    34 /**

    35  *   DrawGlyphListAA - loops for AATextRenderer pipe

    36  *   1) draw anti-aliased text onto destination surface

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

    38  *      from within the surface description data for clip rect

    39  */

    40 public class DrawGlyphListAA extends GraphicsPrimitive {

    41 

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

    43 

    44     public final static int primTypeID = makePrimTypeID();

    45 

    46     public static DrawGlyphListAA locate(SurfaceType srctype,

    47                                    CompositeType comptype,

    48                                    SurfaceType dsttype)

    49     {

    50         return (DrawGlyphListAA)

    51             GraphicsPrimitiveMgr.locate(primTypeID,

    52                                         srctype, comptype, dsttype);

    53     }

    54 

    55     protected DrawGlyphListAA(SurfaceType srctype,

    56                          CompositeType comptype,

    57                          SurfaceType dsttype)

    58     {

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

    60     }

    61 

    62     public DrawGlyphListAA(long pNativePrim,

    63                            SurfaceType srctype,

    64                            CompositeType comptype,

    65                            SurfaceType dsttype)

    66     {

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

    68     }

    69 

    70     public native void DrawGlyphListAA(SunGraphics2D sg2d, SurfaceData dest,

    71                                        GlyphList srcData);

    72 

    73     static {

    74         GraphicsPrimitiveMgr.registerGeneral(

    75                                    new DrawGlyphListAA(null, null, null));

    76     }

    77 

    78     public GraphicsPrimitive makePrimitive(SurfaceType srctype,

    79                                            CompositeType comptype,

    80                                            SurfaceType dsttype) {

    81         return new General(srctype, comptype, dsttype);

    82     }

    83 

    84     public static class General extends DrawGlyphListAA {

    85         MaskFill maskop;

    86 

    87         public General(SurfaceType srctype,

    88                        CompositeType comptype,

    89                        SurfaceType dsttype)

    90         {

    91             super(srctype, comptype, dsttype);

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

    93         }

    94 

    95         public void DrawGlyphListAA(SunGraphics2D sg2d, SurfaceData dest,

    96                                     GlyphList gl)

    97         {

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

    99             int num = gl.getNumGlyphs();

   100             Region clip = sg2d.getCompClip();

   101             int cx1 = clip.getLoX();

   102             int cy1 = clip.getLoY();

   103             int cx2 = clip.getHiX();

   104             int cy2 = clip.getHiY();

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

   106                 gl.setGlyphIndex(i);

   107                 int metrics[] = gl.getMetrics();

   108                 int gx1 = metrics[0];

   109                 int gy1 = metrics[1];

   110                 int w = metrics[2];

   111                 int gx2 = gx1 + w;

   112                 int gy2 = gy1 + metrics[3];

   113                 int off = 0;

   114                 if (gx1 < cx1) {

   115                     off = cx1 - gx1;

   116                     gx1 = cx1;

   117                 }

   118                 if (gy1 < cy1) {

   119                     off += (cy1 - gy1) * w;

   120                     gy1 = cy1;

   121                 }

   122                 if (gx2 > cx2) gx2 = cx2;

   123                 if (gy2 > cy2) gy2 = cy2;

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

   125                     byte alpha[] = gl.getGrayBits();

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

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

   128                                     alpha, off, w);

   129                 }

   130             }

   131         }

   132     }

   133 

   134     public GraphicsPrimitive traceWrap() {

   135         return new TraceDrawGlyphListAA(this);

   136     }

   137 

   138     private static class TraceDrawGlyphListAA extends DrawGlyphListAA {

   139         DrawGlyphListAA target;

   140 

   141         public TraceDrawGlyphListAA(DrawGlyphListAA target) {

   142             super(target.getSourceType(),

   143                   target.getCompositeType(),

   144                   target.getDestType());

   145             this.target = target;

   146         }

   147 

   148         public GraphicsPrimitive traceWrap() {

   149             return this;

   150         }

   151 

   152         public void DrawGlyphListAA(SunGraphics2D sg2d, SurfaceData dest,

   153                                     GlyphList glyphs)

   154         {

   155             tracePrimitive(target);

   156             target.DrawGlyphListAA(sg2d, dest, glyphs);

   157         }

   158     }

   159 }