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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 | +} | |