Showing the changes to java/pkg/sun/java2d/pipe/SpanClipRenderer.java (1 of 18352 files). Show all
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| 1 | +/* | |
| 2 | + * Copyright (c) 1998, 1999, 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 java.awt.Rectangle; | |
| 29 | +import java.awt.Shape; | |
| 30 | +import java.awt.geom.PathIterator; | |
| 31 | +import sun.java2d.SunGraphics2D; | |
| 32 | + | |
| 33 | +/** | |
| 34 | + * This class uses a Region iterator to modify the extents of alpha | |
| 35 | + * tiles created during Shape rendering based upon a non-rectangular | |
| 36 | + * clipping path. | |
| 37 | + */ | |
| 38 | +public class SpanClipRenderer implements CompositePipe | |
| 39 | +{ | |
| 40 | + CompositePipe outpipe; | |
| 41 | + | |
| 42 | + static Class RegionClass = Region.class; | |
| 43 | + static Class RegionIteratorClass = RegionIterator.class; | |
| 44 | + | |
| 45 | + static { | |
| 46 | + initIDs(RegionClass, RegionIteratorClass); | |
| 47 | + } | |
| 48 | + | |
| 49 | + static native void initIDs(Class rc, Class ric); | |
| 50 | + | |
| 51 | + public SpanClipRenderer(CompositePipe pipe) { | |
| 52 | + outpipe = pipe; | |
| 53 | + } | |
| 54 | + | |
| 55 | + class SCRcontext { | |
| 56 | + RegionIterator iterator; | |
| 57 | + Object outcontext; | |
| 58 | + int band[]; | |
| 59 | + byte tile[]; | |
| 60 | + | |
| 61 | + public SCRcontext(RegionIterator ri, Object outctx) { | |
| 62 | + iterator = ri; | |
| 63 | + outcontext = outctx; | |
| 64 | + band = new int[4]; | |
| 65 | + } | |
| 66 | + } | |
| 67 | + | |
| 68 | + public Object startSequence(SunGraphics2D sg, Shape s, Rectangle devR, | |
| 69 | + int[] abox) { | |
| 70 | + RegionIterator ri = sg.clipRegion.getIterator(); | |
| 71 | + | |
| 72 | + return new SCRcontext(ri, outpipe.startSequence(sg, s, devR, abox)); | |
| 73 | + } | |
| 74 | + | |
| 75 | + public boolean needTile(Object ctx, int x, int y, int w, int h) { | |
| 76 | + SCRcontext context = (SCRcontext) ctx; | |
| 77 | + return (outpipe.needTile(context.outcontext, x, y, w, h)); | |
| 78 | + } | |
| 79 | + | |
| 80 | + public void renderPathTile(Object ctx, | |
| 81 | + byte[] atile, int offset, int tsize, | |
| 82 | + int x, int y, int w, int h, | |
| 83 | + ShapeSpanIterator sr) { | |
| 84 | + renderPathTile(ctx, atile, offset, tsize, x, y, w, h); | |
| 85 | + } | |
| 86 | + | |
| 87 | + public void renderPathTile(Object ctx, | |
| 88 | + byte[] atile, int offset, int tsize, | |
| 89 | + int x, int y, int w, int h) { | |
| 90 | + SCRcontext context = (SCRcontext) ctx; | |
| 91 | + RegionIterator ri = context.iterator.createCopy(); | |
| 92 | + int[] band = context.band; | |
| 93 | + band[0] = x; | |
| 94 | + band[1] = y; | |
| 95 | + band[2] = x + w; | |
| 96 | + band[3] = y + h; | |
| 97 | + if (atile == null) { | |
| 98 | + int size = w * h; | |
| 99 | + atile = context.tile; | |
| 100 | + if (atile != null && atile.length < size) { | |
| 101 | + atile = null; | |
| 102 | + } | |
| 103 | + if (atile == null) { | |
| 104 | + atile = new byte[size]; | |
| 105 | + context.tile = atile; | |
| 106 | + } | |
| 107 | + offset = 0; | |
| 108 | + tsize = w; | |
| 109 | + fillTile(ri, atile, offset, tsize, band); | |
| 110 | + } else { | |
| 111 | + eraseTile(ri, atile, offset, tsize, band); | |
| 112 | + } | |
| 113 | + | |
| 114 | + if (band[2] > band[0] && band[3] > band[1]) { | |
| 115 | + offset += (band[1] - y) * tsize + (band[0] - x); | |
| 116 | + outpipe.renderPathTile(context.outcontext, | |
| 117 | + atile, offset, tsize, | |
| 118 | + band[0], band[1], | |
| 119 | + band[2] - band[0], | |
| 120 | + band[3] - band[1]); | |
| 121 | + } | |
| 122 | + } | |
| 123 | + | |
| 124 | + public native void fillTile(RegionIterator ri, | |
| 125 | + byte[] alpha, int offset, int tsize, | |
| 126 | + int[] band); | |
| 127 | + | |
| 128 | + public native void eraseTile(RegionIterator ri, | |
| 129 | + byte[] alpha, int offset, int tsize, | |
| 130 | + int[] band); | |
| 131 | + | |
| 132 | + public void skipTile(Object ctx, int x, int y) { | |
| 133 | + SCRcontext context = (SCRcontext) ctx; | |
| 134 | + outpipe.skipTile(context.outcontext, x, y); | |
| 135 | + } | |
| 136 | + | |
| 137 | + public void endSequence(Object ctx) { | |
| 138 | + SCRcontext context = (SCRcontext) ctx; | |
| 139 | + outpipe.endSequence(context.outcontext); | |
| 140 | + } | |
| 141 | +} | |