| J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2000-2003 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package sun.java2d.pipe; |
| 27 | |
| 28 | import java.awt.Rectangle; |
| 29 | import java.awt.Shape; |
| 30 | import java.awt.Font; |
| 31 | import java.awt.font.GlyphVector; |
| 32 | import sun.java2d.SunGraphics2D; |
| 33 | import sun.java2d.loops.FontInfo; |
| 34 | import sun.font.GlyphList; |
| 35 | |
| 36 | /* |
| 37 | * This class uses the alpha graybits arrays from a GlyphList object to |
| 38 | * drive a CompositePipe in much the same way as the antialiasing renderer. |
| 39 | */ |
| 40 | public class TextRenderer extends GlyphListPipe { |
| 41 | |
| 42 | CompositePipe outpipe; |
| 43 | |
| 44 | public TextRenderer(CompositePipe pipe) { |
| 45 | outpipe = pipe; |
| 46 | } |
| 47 | |
| 48 | protected void drawGlyphList(SunGraphics2D sg2d, GlyphList gl) { |
| 49 | int num = gl.getNumGlyphs(); |
| 50 | Region clipRegion = sg2d.getCompClip(); |
| 51 | int cx1 = clipRegion.getLoX(); |
| 52 | int cy1 = clipRegion.getLoY(); |
| 53 | int cx2 = clipRegion.getHiX(); |
| 54 | int cy2 = clipRegion.getHiY(); |
| 55 | Object ctx = null; |
| 56 | try { |
| 57 | int[] bounds = gl.getBounds(); |
| 58 | Rectangle r = new Rectangle(bounds[0], bounds[1], |
| 59 | bounds[2] - bounds[0], |
| 60 | bounds[3] - bounds[1]); |
| 61 | Shape s = sg2d.untransformShape(r); |
| 62 | ctx = outpipe.startSequence(sg2d, s, r, bounds); |
| 63 | for (int i = 0; i < num; i++) { |
| 64 | gl.setGlyphIndex(i); |
| 65 | int metrics[] = gl.getMetrics(); |
| 66 | int gx1 = metrics[0]; |
| 67 | int gy1 = metrics[1]; |
| 68 | int w = metrics[2]; |
| 69 | int gx2 = gx1 + w; |
| 70 | int gy2 = gy1 + metrics[3]; |
| 71 | int off = 0; |
| 72 | if (gx1 < cx1) { |
| 73 | off = cx1 - gx1; |
| 74 | gx1 = cx1; |
| 75 | } |
| 76 | if (gy1 < cy1) { |
| 77 | off += (cy1 - gy1) * w; |
| 78 | gy1 = cy1; |
| 79 | } |
| 80 | if (gx2 > cx2) gx2 = cx2; |
| 81 | if (gy2 > cy2) gy2 = cy2; |
| 82 | if (gx2 > gx1 && gy2 > gy1 && |
| 83 | outpipe.needTile(ctx, gx1, gy1, gx2 - gx1, gy2 - gy1)) |
| 84 | { |
| 85 | byte alpha[] = gl.getGrayBits(); |
| 86 | outpipe.renderPathTile(ctx, alpha, off, w, |
| 87 | gx1, gy1, gx2 - gx1, gy2 - gy1); |
| 88 | } else { |
| 89 | outpipe.skipTile(ctx, gx1, gy1); |
| 90 | } |
| 91 | } |
| 92 | } finally { |
| 93 | if (ctx != null) { |
| 94 | outpipe.endSequence(ctx); |
| 95 | } |
| 96 | } |
| 97 | } |
| 98 | } |