132         ConcurrentHashMap cache = (ConcurrentHashMap)cacheref.get();
 133         if (cache == null) {
 134             cache = new ConcurrentHashMap();
 135             cacheref = new SoftReference(cache);
 136         }
 137 
 138         LayoutEngine e = (LayoutEngine)cache.get(key);
 139         if (e == null) {
 140             LayoutEngineKey copy = key.copy();
 141             e = new SunLayoutEngine(copy);
 142             cache.put(copy, e);
 143         }
 144         return e;
 145     }
 146     private SoftReference cacheref = new SoftReference(null);
 147 
 148     private SunLayoutEngine(LayoutEngineKey key) {
 149         this.key = key;
 150     }
 151 













 152     public void layout(FontStrikeDesc desc, float[] mat, int gmask,
 153                        int baseIndex, TextRecord tr, int typo_flags,
 154                        Point2D.Float pt, GVData data) {
 155         Font2D font = key.font();
 156         FontStrike strike = font.getStrike(desc);
 157         long layoutTables = font.getLayoutTableCache();





 158         nativeLayout(font, strike, mat, gmask, baseIndex,
 159              tr.text, tr.start, tr.limit, tr.min, tr.max,
 160              key.script(), key.lang(), typo_flags, pt, data,
 161              font.getUnitsPerEm(), layoutTables);
 162     }
 163 
 164     private static native void
 165         nativeLayout(Font2D font, FontStrike strike, float[] mat, int gmask,
 166              int baseIndex, char[] chars, int offset, int limit,
 167              int min, int max, int script, int lang, int typo_flags,
 168              Point2D.Float pt, GVData data, long upem, long layoutTables);
 169 }

 132         ConcurrentHashMap cache = (ConcurrentHashMap)cacheref.get();
 133         if (cache == null) {
 134             cache = new ConcurrentHashMap();
 135             cacheref = new SoftReference(cache);
 136         }
 137 
 138         LayoutEngine e = (LayoutEngine)cache.get(key);
 139         if (e == null) {
 140             LayoutEngineKey copy = key.copy();
 141             e = new SunLayoutEngine(copy);
 142             cache.put(copy, e);
 143         }
 144         return e;
 145     }
 146     private SoftReference cacheref = new SoftReference(null);
 147 
 148     private SunLayoutEngine(LayoutEngineKey key) {
 149         this.key = key;
 150     }
 151 
 152     private boolean isAAT(Font2D font) {
 153         if (font instanceof TrueTypeFont) {
 154             TrueTypeFont ttf = (TrueTypeFont)font;
 155             return ttf.getDirectoryEntry(TrueTypeFont.morxTag) != null ||
 156             ttf.getDirectoryEntry(TrueTypeFont.mortTag) != null;
 157         } else if (font instanceof PhysicalFont) {
 158             PhysicalFont pf = (PhysicalFont)font;
 159             return pf.getTableBytes(TrueTypeFont.morxTag) != null ||
 160             pf.getTableBytes(TrueTypeFont.mortTag) != null;
 161         }
 162         return false;
 163     }
 164 
 165     public void layout(FontStrikeDesc desc, float[] mat, int gmask,
 166                        int baseIndex, TextRecord tr, int typo_flags,
 167                        Point2D.Float pt, GVData data) {
 168         Font2D font = key.font();
 169         FontStrike strike = font.getStrike(desc);
 170         long layoutTables = font.getLayoutTableCache();
 171         if (isAAT(font) && (typo_flags & 0x80000000) != 0) {
 172             // Ignore layout tables for RTL AAT fonts
 173             // due to lack of support in ICU
 174             layoutTables = 0;
 175         }
 176         nativeLayout(font, strike, mat, gmask, baseIndex,
 177              tr.text, tr.start, tr.limit, tr.min, tr.max,
 178              key.script(), key.lang(), typo_flags, pt, data,
 179              font.getUnitsPerEm(), layoutTables);
 180     }
 181 
 182     private static native void
 183         nativeLayout(Font2D font, FontStrike strike, float[] mat, int gmask,
 184              int baseIndex, char[] chars, int offset, int limit,
 185              int min, int max, int script, int lang, int typo_flags,
 186              Point2D.Float pt, GVData data, long upem, long layoutTables);
 187 }