J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 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.font; |
| 27 | |
| 28 | import java.awt.geom.GeneralPath; |
| 29 | import java.awt.geom.Point2D; |
| 30 | import java.awt.geom.Rectangle2D; |
| 31 | import java.lang.ref.WeakReference; |
| 32 | |
| 33 | /* This is Freetype based implementation of FontScaler. |
| 34 | * |
| 35 | * Note that in case of runtime error it is expected that |
| 36 | * native code will release all native resources and |
| 37 | * call invalidateScaler() (that will throw FontScalerException). |
| 38 | * |
| 39 | * Note that callee is responsible for releasing native scaler context. |
| 40 | */ |
| 41 | class FreetypeFontScaler extends FontScaler { |
| 42 | /* constants aligned with native code */ |
| 43 | private static final int TRUETYPE_FONT = 1; |
| 44 | private static final int TYPE1_FONT = 2; |
| 45 | |
| 46 | static { |
| 47 | /* At the moment fontmanager library depends on freetype library |
| 48 | and therefore no need to load it explicitly here */ |
| 49 | FontManagerNativeLibrary.load(); |
| 50 | initIDs(FreetypeFontScaler.class); |
| 51 | } |
| 52 | |
| 53 | private static native void initIDs(Class FFS); |
| 54 | |
| 55 | private void invalidateScaler() throws FontScalerException { |
| 56 | nativeScaler = 0; |
| 57 | font = null; |
| 58 | throw new FontScalerException(); |
| 59 | } |
| 60 | |
| 61 | public FreetypeFontScaler(Font2D font, int indexInCollection, |
| 62 | boolean supportsCJK, int filesize) { |
| 63 | int fonttype = TRUETYPE_FONT; |
| 64 | if (font instanceof Type1Font) { |
| 65 | fonttype = TYPE1_FONT; |
| 66 | } |
| 67 | nativeScaler = initNativeScaler(font, |
| 68 | fonttype, |
| 69 | indexInCollection, |
| 70 | supportsCJK, |
| 71 | filesize); |
| 72 | this.font = new WeakReference(font); |
| 73 | } |
| 74 | |
| 75 | synchronized StrikeMetrics getFontMetrics(long pScalerContext) |
| 76 | throws FontScalerException { |
| 77 | if (nativeScaler != 0L) { |
| 78 | return getFontMetricsNative(font.get(), |
| 79 | pScalerContext, |
| 80 | nativeScaler); |
| 81 | } |
| 82 | return FontManager.getNullScaler().getFontMetrics(0L); |
| 83 | } |
| 84 | |
| 85 | synchronized float getGlyphAdvance(long pScalerContext, int glyphCode) |
| 86 | throws FontScalerException { |
| 87 | if (nativeScaler != 0L) { |
| 88 | return getGlyphAdvanceNative(font.get(), |
| 89 | pScalerContext, |
| 90 | nativeScaler, |
| 91 | glyphCode); |
| 92 | } |
| 93 | return FontManager.getNullScaler().getGlyphAdvance(0L, glyphCode); |
| 94 | } |
| 95 | |
| 96 | synchronized void getGlyphMetrics(long pScalerContext, |
| 97 | int glyphCode, Point2D.Float metrics) |
| 98 | throws FontScalerException { |
| 99 | if (nativeScaler != 0L) { |
| 100 | getGlyphMetricsNative(font.get(), |
| 101 | pScalerContext, |
| 102 | nativeScaler, |
| 103 | glyphCode, |
| 104 | metrics); |
| 105 | return; |
| 106 | } |
| 107 | FontManager.getNullScaler().getGlyphMetrics(0L, glyphCode, metrics); |
| 108 | } |
| 109 | |
| 110 | synchronized long getGlyphImage(long pScalerContext, int glyphCode) |
| 111 | throws FontScalerException { |
| 112 | if (nativeScaler != 0L) { |
| 113 | return getGlyphImageNative(font.get(), |
| 114 | pScalerContext, |
| 115 | nativeScaler, |
| 116 | glyphCode); |
| 117 | } |
| 118 | return FontManager.getNullScaler().getGlyphImage(0L, glyphCode); |
| 119 | } |
| 120 | |
| 121 | synchronized Rectangle2D.Float getGlyphOutlineBounds( |
| 122 | long pScalerContext, int glyphCode) |
| 123 | throws FontScalerException { |
| 124 | if (nativeScaler != 0L) { |
| 125 | return getGlyphOutlineBoundsNative(font.get(), |
| 126 | pScalerContext, |
| 127 | nativeScaler, |
| 128 | glyphCode); |
| 129 | } |
| 130 | return FontManager.getNullScaler().getGlyphOutlineBounds(0L,glyphCode); |
| 131 | } |
| 132 | |
| 133 | synchronized GeneralPath getGlyphOutline( |
| 134 | long pScalerContext, int glyphCode, float x, float y) |
| 135 | throws FontScalerException { |
| 136 | if (nativeScaler != 0L) { |
| 137 | return getGlyphOutlineNative(font.get(), |
| 138 | pScalerContext, |
| 139 | nativeScaler, |
| 140 | glyphCode, |
| 141 | x, y); |
| 142 | } |
| 143 | return FontManager.getNullScaler().getGlyphOutline(0L, glyphCode, x,y); |
| 144 | } |
| 145 | |
| 146 | synchronized GeneralPath getGlyphVectorOutline( |
| 147 | long pScalerContext, int[] glyphs, int numGlyphs, |
| 148 | float x, float y) throws FontScalerException { |
| 149 | if (nativeScaler != 0L) { |
| 150 | return getGlyphVectorOutlineNative(font.get(), |
| 151 | pScalerContext, |
| 152 | nativeScaler, |
| 153 | glyphs, |
| 154 | numGlyphs, |
| 155 | x, y); |
| 156 | } |
| 157 | return FontManager.getNullScaler().getGlyphVectorOutline( |
| 158 | 0L, glyphs, numGlyphs, x, y); |
| 159 | } |
| 160 | |
| 161 | synchronized long getLayoutTableCache() throws FontScalerException { |
| 162 | return getLayoutTableCacheNative(nativeScaler); |
| 163 | } |
| 164 | |
| 165 | public synchronized void dispose() { |
| 166 | if (nativeScaler != 0L) { |
| 167 | disposeNativeScaler(nativeScaler); |
| 168 | nativeScaler = 0L; |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | synchronized int getNumGlyphs() throws FontScalerException { |
| 173 | if (nativeScaler != 0L) { |
| 174 | return getNumGlyphsNative(nativeScaler); |
| 175 | } |
| 176 | return FontManager.getNullScaler().getNumGlyphs(); |
| 177 | } |
| 178 | |
| 179 | synchronized int getMissingGlyphCode() throws FontScalerException { |
| 180 | if (nativeScaler != 0L) { |
| 181 | return getMissingGlyphCodeNative(nativeScaler); |
| 182 | } |
| 183 | return FontManager.getNullScaler().getMissingGlyphCode(); |
| 184 | } |
| 185 | |
| 186 | synchronized int getGlyphCode(char charCode) throws FontScalerException { |
| 187 | if (nativeScaler != 0L) { |
| 188 | return getGlyphCodeNative(nativeScaler, charCode); |
| 189 | } |
| 190 | return FontManager.getNullScaler().getGlyphCode(charCode); |
| 191 | } |
| 192 | |
| 193 | synchronized Point2D.Float getGlyphPoint(long pScalerContext, |
| 194 | int glyphCode, int ptNumber) |
| 195 | throws FontScalerException { |
| 196 | if (nativeScaler != 0L) { |
| 197 | return getGlyphPointNative(font.get(), pScalerContext, |
| 198 | nativeScaler, glyphCode, ptNumber); |
| 199 | } |
| 200 | return FontManager.getNullScaler().getGlyphPoint( |
| 201 | pScalerContext, glyphCode, ptNumber); |
| 202 | } |
| 203 | |
| 204 | synchronized long getUnitsPerEm() { |
| 205 | return getUnitsPerEMNative(nativeScaler); |
| 206 | } |
| 207 | |
| 208 | long createScalerContext(double[] matrix, boolean fontType, |
| 209 | int aa, int fm, float boldness, float italic) { |
| 210 | if (nativeScaler != 0L) { |
| 211 | return createScalerContextNative(nativeScaler, matrix, |
| 212 | fontType, aa, fm, boldness, italic); |
| 213 | } |
| 214 | return NullFontScaler.getNullScalerContext(); |
| 215 | } |
| 216 | |
| 217 | //Note: native methods can throw RuntimeException if processing fails |
| 218 | private native long initNativeScaler(Font2D font, int type, |
| 219 | int indexInCollection, boolean supportsCJK, int filesize); |
| 220 | private native StrikeMetrics getFontMetricsNative(Font2D font, |
| 221 | long pScalerContext, long pScaler); |
| 222 | private native float getGlyphAdvanceNative(Font2D font, |
| 223 | long pScalerContext, long pScaler, int glyphCode); |
| 224 | private native void getGlyphMetricsNative(Font2D font, |
| 225 | long pScalerContext, long pScaler, |
| 226 | int glyphCode, Point2D.Float metrics); |
| 227 | private native long getGlyphImageNative(Font2D font, |
| 228 | long pScalerContext, long pScaler, int glyphCode); |
| 229 | private native Rectangle2D.Float getGlyphOutlineBoundsNative(Font2D font, |
| 230 | long pScalerContext, long pScaler, int glyphCode); |
| 231 | private native GeneralPath getGlyphOutlineNative(Font2D font, |
| 232 | long pScalerContext, long pScaler, |
| 233 | int glyphCode, float x, float y); |
| 234 | private native GeneralPath getGlyphVectorOutlineNative(Font2D font, |
| 235 | long pScalerContext, long pScaler, |
| 236 | int[] glyphs, int numGlyphs, float x, float y); |
| 237 | native Point2D.Float getGlyphPointNative(Font2D font, |
| 238 | long pScalerContext, long pScaler, int glyphCode, int ptNumber); |
| 239 | |
| 240 | private native long getLayoutTableCacheNative(long pScaler); |
| 241 | |
| 242 | private native void disposeNativeScaler(long pScaler); |
| 243 | |
| 244 | private native int getGlyphCodeNative(long pScaler, char charCode); |
| 245 | private native int getNumGlyphsNative(long pScaler); |
| 246 | private native int getMissingGlyphCodeNative(long pScaler); |
| 247 | |
| 248 | private native long getUnitsPerEMNative(long pScaler); |
| 249 | |
| 250 | native long createScalerContextNative(long pScaler, double[] matrix, |
| 251 | boolean fontType, int aa, int fm, float boldness, float italic); |
| 252 | |
| 253 | /* Freetype scaler context does not contain any pointers that |
| 254 | has to be invalidated if native scaler is bad */ |
| 255 | void invalidateScalerContext(long pScalerContext) {} |
| 256 | } |