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| 1 | /* | ||
| 2 | * Copyright (c) 2003, 2008, 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.font; | ||
| 27 | |||
| 28 | import java.awt.Font; | ||
| 29 | import java.awt.geom.AffineTransform; | ||
| 30 | import java.awt.geom.GeneralPath; | ||
| 31 | import java.awt.geom.Point2D; | ||
| 32 | import java.awt.geom.Rectangle2D; | ||
| 33 | import java.util.concurrent.ConcurrentHashMap; | ||
| 34 | |||
| 35 | |||
| 36 | public abstract class PhysicalStrike extends FontStrike { | ||
| 37 | |||
| 38 | static final long INTMASK = 0xffffffffL; | ||
| 39 | static boolean longAddresses; | ||
| 40 | static { | ||
| 41 | switch (StrikeCache.nativeAddressSize) { | ||
| 42 | case 8: longAddresses = true; break; | ||
| 43 | case 4: longAddresses = false; break; | ||
| 44 | default: throw new RuntimeException("Unexpected address size"); | ||
| 45 | } | ||
| 46 | } | ||
| 47 | |||
| 48 | private PhysicalFont physicalFont; | ||
| 49 | protected CharToGlyphMapper mapper; | ||
| 50 | /* the ScalerContext is a native structure pre-filled with the | ||
| 51 | * info needed to setup the scaler for this strike. Its immutable | ||
| 52 | * so we set it up when the strike is created and free it when the | ||
| 53 | * strike is disposed. There's then no need to pass the info down | ||
| 54 | * separately to native on every call to the scaler. | ||
| 55 | */ | ||
| 56 | protected long pScalerContext; | ||
| 57 | |||
| 58 | /* Only one of these two arrays is non-null. | ||
| 59 | * use the one that matches size of an address (32 or 64 bits) | ||
| 60 | */ | ||
| 61 | protected long[] longGlyphImages; | ||
| 62 | protected int[] intGlyphImages; | ||
| 63 | |||
| 64 | /* Used by the TrueTypeFont subclass, which is the only client | ||
| 65 | * of getGlyphPoint(). The field and method are here because | ||
| 66 | * there is no TrueTypeFontStrike subclass. | ||
| 67 | * This map is a cache of the positions of points on the outline | ||
| 68 | * of a TrueType glyph. It is used by the OpenType layout engine | ||
| 69 | * to perform mark positioning. Without this cache every position | ||
| 70 | * request involves scaling and hinting the glyph outline potentially | ||
| 71 | * over and over again. | ||
| 72 | */ | ||
| 73 | ConcurrentHashMap<Integer, Point2D.Float> glyphPointMapCache; | ||
| 74 | |||
| 75 | protected boolean getImageWithAdvance; | ||
| 76 | protected static final int complexTX = | ||
| 77 | AffineTransform.TYPE_FLIP | | ||
| 78 | AffineTransform.TYPE_GENERAL_SCALE | | ||
| 79 | AffineTransform.TYPE_GENERAL_ROTATION | | ||
| 80 | AffineTransform.TYPE_GENERAL_TRANSFORM | | ||
| 81 | AffineTransform.TYPE_QUADRANT_ROTATION; | ||
| 82 | |||
| 83 | PhysicalStrike(PhysicalFont physicalFont, FontStrikeDesc desc) { | ||
| 84 | this.physicalFont = physicalFont; | ||
| 85 | this.desc = desc; | ||
| 86 | } | ||
| 87 | |||
| 88 | protected PhysicalStrike() { | ||
| 89 | } | ||
| 90 | /* A number of methods are delegated by the strike to the scaler | ||
| 91 | * context which is a shared resource on a physical font. | ||
| 92 | */ | ||
| 93 | |||
| 94 | public int getNumGlyphs() { | ||
| 95 | return physicalFont.getNumGlyphs(); | ||
| 96 | } | ||
| 97 | |||
| 98 | /* These 3 metrics methods below should be implemented to return | ||
| 99 | * values in user space. | ||
| 100 | */ | ||
| 101 | StrikeMetrics getFontMetrics() { | ||
| 102 | if (strikeMetrics == null) { | ||
| 103 | strikeMetrics = | ||
| 104 | physicalFont.getFontMetrics(pScalerContext); | ||
| 105 | } | ||
| 106 | return strikeMetrics; | ||
| 107 | } | ||
| 108 | |||
| 109 | float getCodePointAdvance(int cp) { | ||
| 110 | return getGlyphAdvance(physicalFont.getMapper().charToGlyph(cp)); | ||
| 111 | } | ||
| 112 | |||
| 113 | Point2D.Float getCharMetrics(char ch) { | ||
| 114 | return getGlyphMetrics(physicalFont.getMapper().charToGlyph(ch)); | ||
| 115 | } | ||
| 116 | |||
| 117 | int getSlot0GlyphImagePtrs(int[] glyphCodes, long[] images, int len) { | ||
| 118 | return 0; | ||
| 119 | } | ||
| 120 | |||
| 121 | /* Used by the OpenType engine for mark positioning. | ||
| 122 | */ | ||
| 123 | Point2D.Float getGlyphPoint(int glyphCode, int ptNumber) { | ||
| 124 | Point2D.Float gp = null; | ||
| 125 | Integer ptKey = Integer.valueOf(glyphCode<<16|ptNumber); | ||
| 126 | if (glyphPointMapCache == null) { | ||
| 127 | synchronized (this) { | ||
| 128 | if (glyphPointMapCache == null) { | ||
| 129 | glyphPointMapCache = | ||
| 130 | new ConcurrentHashMap<Integer, Point2D.Float>(); | ||
| 131 | } | ||
| 132 | } | ||
| 133 | } else { | ||
| 134 | gp = glyphPointMapCache.get(ptKey); | ||
| 135 | } | ||
| 136 | |||
| 137 | if (gp == null) { | ||
| 138 | gp = (physicalFont.getGlyphPoint(pScalerContext, glyphCode, ptNumber)); | ||
| 139 | adjustPoint(gp); | ||
| 140 | glyphPointMapCache.put(ptKey, gp); | ||
| 141 | } | ||
| 142 | return gp; | ||
| 143 | } | ||
| 144 | |||
| 145 | protected void adjustPoint(Point2D.Float pt) { | ||
| 146 | } | ||
| 147 | } | ||