J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1998-2007 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 sun.java2d.SunGraphics2D; |
| 29 | import sun.java2d.SurfaceData; |
| 30 | import java.awt.Rectangle; |
| 31 | import java.awt.Shape; |
| 32 | import java.awt.BasicStroke; |
| 33 | import java.awt.geom.PathIterator; |
| 34 | import java.awt.geom.AffineTransform; |
| 35 | import java.awt.geom.Rectangle2D; |
| 36 | import sun.awt.SunHints; |
| 37 | |
| 38 | /** |
| 39 | * This class is used to convert raw geometry into a span iterator |
| 40 | * object using a simple flattening polygon scan converter. |
| 41 | * The iterator can be passed on to special SpanFiller loops to |
| 42 | * perform the actual rendering. |
| 43 | */ |
| 44 | public abstract class SpanShapeRenderer implements ShapeDrawPipe { |
| 45 | final static RenderingEngine RenderEngine = RenderingEngine.getInstance(); |
| 46 | |
| 47 | public static class Composite extends SpanShapeRenderer { |
| 48 | CompositePipe comppipe; |
| 49 | |
| 50 | public Composite(CompositePipe pipe) { |
| 51 | comppipe = pipe; |
| 52 | } |
| 53 | |
| 54 | public Object startSequence(SunGraphics2D sg, Shape s, |
| 55 | Rectangle devR, int[] bbox) { |
| 56 | return comppipe.startSequence(sg, s, devR, bbox); |
| 57 | } |
| 58 | |
| 59 | public void renderBox(Object ctx, int x, int y, int w, int h) { |
| 60 | comppipe.renderPathTile(ctx, null, 0, w, x, y, w, h); |
| 61 | } |
| 62 | |
| 63 | public void endSequence(Object ctx) { |
| 64 | comppipe.endSequence(ctx); |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | public static class Simple extends SpanShapeRenderer { |
| 69 | public Object startSequence(SunGraphics2D sg, Shape s, |
| 70 | Rectangle devR, int[] bbox) { |
| 71 | return sg; |
| 72 | } |
| 73 | |
| 74 | public void renderBox(Object ctx, int x, int y, int w, int h) { |
| 75 | SunGraphics2D sg2d = (SunGraphics2D) ctx; |
| 76 | SurfaceData sd = sg2d.getSurfaceData(); |
| 77 | sg2d.loops.fillRectLoop.FillRect(sg2d, sd, x, y, w, h); |
| 78 | } |
| 79 | |
| 80 | public void endSequence(Object ctx) { |
| 81 | } |
| 82 | } |
| 83 | |
| 84 | public void draw(SunGraphics2D sg, Shape s) { |
| 85 | if (sg.stroke instanceof BasicStroke) { |
| 86 | ShapeSpanIterator sr = LoopPipe.getStrokeSpans(sg, s); |
| 87 | try { |
| 88 | renderSpans(sg, sg.getCompClip(), s, sr); |
| 89 | } finally { |
| 90 | sr.dispose(); |
| 91 | } |
| 92 | } else { |
| 93 | fill(sg, sg.stroke.createStrokedShape(s)); |
| 94 | } |
| 95 | } |
| 96 | |
| 97 | public static final int NON_RECTILINEAR_TRANSFORM_MASK = |
| 98 | (AffineTransform.TYPE_GENERAL_TRANSFORM | |
| 99 | AffineTransform.TYPE_GENERAL_ROTATION); |
| 100 | |
| 101 | public void fill(SunGraphics2D sg, Shape s) { |
| 102 | if (s instanceof Rectangle2D && |
| 103 | (sg.transform.getType() & NON_RECTILINEAR_TRANSFORM_MASK) == 0) |
| 104 | { |
| 105 | renderRect(sg, (Rectangle2D) s); |
| 106 | return; |
| 107 | } |
| 108 | |
| 109 | Region clipRegion = sg.getCompClip(); |
| 110 | ShapeSpanIterator sr = LoopPipe.getFillSSI(sg); |
| 111 | try { |
| 112 | sr.setOutputArea(clipRegion); |
| 113 | sr.appendPath(s.getPathIterator(sg.transform)); |
| 114 | renderSpans(sg, clipRegion, s, sr); |
| 115 | } finally { |
| 116 | sr.dispose(); |
| 117 | } |
| 118 | } |
| 119 | |
| 120 | public abstract Object startSequence(SunGraphics2D sg, Shape s, |
| 121 | Rectangle devR, int[] bbox); |
| 122 | |
| 123 | public abstract void renderBox(Object ctx, int x, int y, int w, int h); |
| 124 | |
| 125 | public abstract void endSequence(Object ctx); |
| 126 | |
| 127 | public void renderRect(SunGraphics2D sg, Rectangle2D r) { |
| 128 | double corners[] = { |
| 129 | r.getX(), r.getY(), r.getWidth(), r.getHeight(), |
| 130 | }; |
| 131 | corners[2] += corners[0]; |
| 132 | corners[3] += corners[1]; |
| 133 | if (corners[2] <= corners[0] || corners[3] <= corners[1]) { |
| 134 | return; |
| 135 | } |
| 136 | sg.transform.transform(corners, 0, corners, 0, 2); |
| 137 | if (corners[2] < corners[0]) { |
| 138 | double t = corners[2]; |
| 139 | corners[2] = corners[0]; |
| 140 | corners[0] = t; |
| 141 | } |
| 142 | if (corners[3] < corners[1]) { |
| 143 | double t = corners[3]; |
| 144 | corners[3] = corners[1]; |
| 145 | corners[1] = t; |
| 146 | } |
| 147 | int abox[] = { |
| 148 | (int) corners[0], |
| 149 | (int) corners[1], |
| 150 | (int) corners[2], |
| 151 | (int) corners[3], |
| 152 | }; |
| 153 | Rectangle devR = new Rectangle(abox[0], abox[1], |
| 154 | abox[2] - abox[0], |
| 155 | abox[3] - abox[1]); |
| 156 | Region clipRegion = sg.getCompClip(); |
| 157 | clipRegion.clipBoxToBounds(abox); |
| 158 | if (abox[0] >= abox[2] || abox[1] >= abox[3]) { |
| 159 | return; |
| 160 | } |
| 161 | Object context = startSequence(sg, r, devR, abox); |
| 162 | if (clipRegion.isRectangular()) { |
| 163 | renderBox(context, abox[0], abox[1], |
| 164 | abox[2] - abox[0], |
| 165 | abox[3] - abox[1]); |
| 166 | } else { |
| 167 | SpanIterator sr = clipRegion.getSpanIterator(abox); |
| 168 | while (sr.nextSpan(abox)) { |
| 169 | renderBox(context, abox[0], abox[1], |
| 170 | abox[2] - abox[0], |
| 171 | abox[3] - abox[1]); |
| 172 | } |
| 173 | } |
| 174 | endSequence(context); |
| 175 | } |
| 176 | |
| 177 | public void renderSpans(SunGraphics2D sg, Region clipRegion, Shape s, |
| 178 | ShapeSpanIterator sr) |
| 179 | { |
| 180 | Object context = null; |
| 181 | int abox[] = new int[4]; |
| 182 | try { |
| 183 | sr.getPathBox(abox); |
| 184 | Rectangle devR = new Rectangle(abox[0], abox[1], |
| 185 | abox[2] - abox[0], |
| 186 | abox[3] - abox[1]); |
| 187 | clipRegion.clipBoxToBounds(abox); |
| 188 | if (abox[0] >= abox[2] || abox[1] >= abox[3]) { |
| 189 | return; |
| 190 | } |
| 191 | sr.intersectClipBox(abox[0], abox[1], abox[2], abox[3]); |
| 192 | context = startSequence(sg, s, devR, abox); |
| 193 | |
| 194 | spanClipLoop(context, sr, clipRegion, abox); |
| 195 | |
| 196 | } finally { |
| 197 | if (context != null) { |
| 198 | endSequence(context); |
| 199 | } |
| 200 | } |
| 201 | } |
| 202 | |
| 203 | public void spanClipLoop(Object ctx, SpanIterator sr, |
| 204 | Region r, int[] abox) { |
| 205 | if (!r.isRectangular()) { |
| 206 | sr = r.filter(sr); |
| 207 | } |
| 208 | while (sr.nextSpan(abox)) { |
| 209 | int x = abox[0]; |
| 210 | int y = abox[1]; |
| 211 | renderBox(ctx, x, y, abox[2] - x, abox[3] - y); |
| 212 | } |
| 213 | } |
| 214 | } |