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| 1 | /* | ||
| 2 | * Copyright (c) 1998, 2007, 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.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 | implements LoopBasedPipe | ||
| 70 | { | ||
| 71 | public Object startSequence(SunGraphics2D sg, Shape s, | ||
| 72 | Rectangle devR, int[] bbox) { | ||
| 73 | return sg; | ||
| 74 | } | ||
| 75 | |||
| 76 | public void renderBox(Object ctx, int x, int y, int w, int h) { | ||
| 77 | SunGraphics2D sg2d = (SunGraphics2D) ctx; | ||
| 78 | SurfaceData sd = sg2d.getSurfaceData(); | ||
| 79 | sg2d.loops.fillRectLoop.FillRect(sg2d, sd, x, y, w, h); | ||
| 80 | } | ||
| 81 | |||
| 82 | public void endSequence(Object ctx) { | ||
| 83 | } | ||
| 84 | } | ||
| 85 | |||
| 86 | public void draw(SunGraphics2D sg, Shape s) { | ||
| 87 | if (sg.stroke instanceof BasicStroke) { | ||
| 88 | ShapeSpanIterator sr = LoopPipe.getStrokeSpans(sg, s); | ||
| 89 | try { | ||
| 90 | renderSpans(sg, sg.getCompClip(), s, sr); | ||
| 91 | } finally { | ||
| 92 | sr.dispose(); | ||
| 93 | } | ||
| 94 | } else { | ||
| 95 | fill(sg, sg.stroke.createStrokedShape(s)); | ||
| 96 | } | ||
| 97 | } | ||
| 98 | |||
| 99 | public static final int NON_RECTILINEAR_TRANSFORM_MASK = | ||
| 100 | (AffineTransform.TYPE_GENERAL_TRANSFORM | | ||
| 101 | AffineTransform.TYPE_GENERAL_ROTATION); | ||
| 102 | |||
| 103 | public void fill(SunGraphics2D sg, Shape s) { | ||
| 104 | if (s instanceof Rectangle2D && | ||
| 105 | (sg.transform.getType() & NON_RECTILINEAR_TRANSFORM_MASK) == 0) | ||
| 106 | { | ||
| 107 | renderRect(sg, (Rectangle2D) s); | ||
| 108 | return; | ||
| 109 | } | ||
| 110 | |||
| 111 | Region clipRegion = sg.getCompClip(); | ||
| 112 | ShapeSpanIterator sr = LoopPipe.getFillSSI(sg); | ||
| 113 | try { | ||
| 114 | sr.setOutputArea(clipRegion); | ||
| 115 | sr.appendPath(s.getPathIterator(sg.transform)); | ||
| 116 | renderSpans(sg, clipRegion, s, sr); | ||
| 117 | } finally { | ||
| 118 | sr.dispose(); | ||
| 119 | } | ||
| 120 | } | ||
| 121 | |||
| 122 | public abstract Object startSequence(SunGraphics2D sg, Shape s, | ||
| 123 | Rectangle devR, int[] bbox); | ||
| 124 | |||
| 125 | public abstract void renderBox(Object ctx, int x, int y, int w, int h); | ||
| 126 | |||
| 127 | public abstract void endSequence(Object ctx); | ||
| 128 | |||
| 129 | public void renderRect(SunGraphics2D sg, Rectangle2D r) { | ||
| 130 | double corners[] = { | ||
| 131 | r.getX(), r.getY(), r.getWidth(), r.getHeight(), | ||
| 132 | }; | ||
| 133 | corners[2] += corners[0]; | ||
| 134 | corners[3] += corners[1]; | ||
| 135 | if (corners[2] <= corners[0] || corners[3] <= corners[1]) { | ||
| 136 | return; | ||
| 137 | } | ||
| 138 | sg.transform.transform(corners, 0, corners, 0, 2); | ||
| 139 | if (corners[2] < corners[0]) { | ||
| 140 | double t = corners[2]; | ||
| 141 | corners[2] = corners[0]; | ||
| 142 | corners[0] = t; | ||
| 143 | } | ||
| 144 | if (corners[3] < corners[1]) { | ||
| 145 | double t = corners[3]; | ||
| 146 | corners[3] = corners[1]; | ||
| 147 | corners[1] = t; | ||
| 148 | } | ||
| 149 | int abox[] = { | ||
| 150 | (int) corners[0], | ||
| 151 | (int) corners[1], | ||
| 152 | (int) corners[2], | ||
| 153 | (int) corners[3], | ||
| 154 | }; | ||
| 155 | Rectangle devR = new Rectangle(abox[0], abox[1], | ||
| 156 | abox[2] - abox[0], | ||
| 157 | abox[3] - abox[1]); | ||
| 158 | Region clipRegion = sg.getCompClip(); | ||
| 159 | clipRegion.clipBoxToBounds(abox); | ||
| 160 | if (abox[0] >= abox[2] || abox[1] >= abox[3]) { | ||
| 161 | return; | ||
| 162 | } | ||
| 163 | Object context = startSequence(sg, r, devR, abox); | ||
| 164 | if (clipRegion.isRectangular()) { | ||
| 165 | renderBox(context, abox[0], abox[1], | ||
| 166 | abox[2] - abox[0], | ||
| 167 | abox[3] - abox[1]); | ||
| 168 | } else { | ||
| 169 | SpanIterator sr = clipRegion.getSpanIterator(abox); | ||
| 170 | while (sr.nextSpan(abox)) { | ||
| 171 | renderBox(context, abox[0], abox[1], | ||
| 172 | abox[2] - abox[0], | ||
| 173 | abox[3] - abox[1]); | ||
| 174 | } | ||
| 175 | } | ||
| 176 | endSequence(context); | ||
| 177 | } | ||
| 178 | |||
| 179 | public void renderSpans(SunGraphics2D sg, Region clipRegion, Shape s, | ||
| 180 | ShapeSpanIterator sr) | ||
| 181 | { | ||
| 182 | Object context = null; | ||
| 183 | int abox[] = new int[4]; | ||
| 184 | try { | ||
| 185 | sr.getPathBox(abox); | ||
| 186 | Rectangle devR = new Rectangle(abox[0], abox[1], | ||
| 187 | abox[2] - abox[0], | ||
| 188 | abox[3] - abox[1]); | ||
| 189 | clipRegion.clipBoxToBounds(abox); | ||
| 190 | if (abox[0] >= abox[2] || abox[1] >= abox[3]) { | ||
| 191 | return; | ||
| 192 | } | ||
| 193 | sr.intersectClipBox(abox[0], abox[1], abox[2], abox[3]); | ||
| 194 | context = startSequence(sg, s, devR, abox); | ||
| 195 | |||
| 196 | spanClipLoop(context, sr, clipRegion, abox); | ||
| 197 | |||
| 198 | } finally { | ||
| 199 | if (context != null) { | ||
| 200 | endSequence(context); | ||
| 201 | } | ||
| 202 | } | ||
| 203 | } | ||
| 204 | |||
| 205 | public void spanClipLoop(Object ctx, SpanIterator sr, | ||
| 206 | Region r, int[] abox) { | ||
| 207 | if (!r.isRectangular()) { | ||
| 208 | sr = r.filter(sr); | ||
| 209 | } | ||
| 210 | while (sr.nextSpan(abox)) { | ||
| 211 | int x = abox[0]; | ||
| 212 | int y = abox[1]; | ||
| 213 | renderBox(ctx, x, y, abox[2] - x, abox[3] - y); | ||
| 214 | } | ||
| 215 | } | ||
| 216 | } | ||