The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2006 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.text; |
| 18 | |
| 19 | /** |
| 20 | * AndroidCharacter exposes some character properties that are not |
| 21 | * easily accessed from java.lang.Character. |
| 22 | */ |
| 23 | public class AndroidCharacter |
| 24 | { |
Kenny Root | bb9a517 | 2010-02-13 00:07:38 -0800 | [diff] [blame^] | 25 | public static final int EAST_ASIAN_WIDTH_NEUTRAL = 0; |
| 26 | public static final int EAST_ASIAN_WIDTH_AMBIGUOUS = 1; |
| 27 | public static final int EAST_ASIAN_WIDTH_HALF_WIDTH = 2; |
| 28 | public static final int EAST_ASIAN_WIDTH_FULL_WIDTH = 3; |
| 29 | public static final int EAST_ASIAN_WIDTH_NARROW = 4; |
| 30 | public static final int EAST_ASIAN_WIDTH_WIDE = 5; |
| 31 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 32 | /** |
| 33 | * Fill in the first <code>count</code> bytes of <code>dest</code> with the |
| 34 | * directionalities from the first <code>count</code> chars of <code>src</code>. |
| 35 | * This is just like Character.getDirectionality() except it is a |
| 36 | * batch operation. |
| 37 | */ |
| 38 | public native static void getDirectionalities(char[] src, byte[] dest, |
| 39 | int count); |
Kenny Root | bb9a517 | 2010-02-13 00:07:38 -0800 | [diff] [blame^] | 40 | |
| 41 | /** |
| 42 | * Calculate the East Asian Width of a character according to |
| 43 | * <a href="http://unicode.org/reports/tr11/">Unicode TR#11</a>. The return |
| 44 | * will be one of {@link #EAST_ASIAN_WIDTH_NEUTRAL}, |
| 45 | * {@link #EAST_ASIAN_WIDTH_AMBIGUOUS}, {@link #EAST_ASIAN_WIDTH_HALF_WIDTH}, |
| 46 | * {@link #EAST_ASIAN_WIDTH_FULL_WIDTH}, {@link #EAST_ASIAN_WIDTH_NARROW}, |
| 47 | * or {@link #EAST_ASIAN_WIDTH_WIDE}. |
| 48 | * |
| 49 | * @param input the character to measure |
| 50 | * @return the East Asian Width for input |
| 51 | */ |
| 52 | public native static int getEastAsianWidth(char input); |
| 53 | |
| 54 | /** |
| 55 | * Fill the first <code>count</code> bytes of <code>dest</code> with the |
| 56 | * East Asian Width from the first <code>count</code> chars of |
| 57 | * <code>src</code>. East Asian Width is calculated based on |
| 58 | * <a href="http://unicode.org/reports/tr11/">Unicode TR#11</a>. Each entry |
| 59 | * in <code>dest> will be one of {@link #EAST_ASIAN_WIDTH_NEUTRAL}, |
| 60 | * {@link #EAST_ASIAN_WIDTH_AMBIGUOUS}, {@link #EAST_ASIAN_WIDTH_HALF_WIDTH}, |
| 61 | * {@link #EAST_ASIAN_WIDTH_FULL_WIDTH}, {@link #EAST_ASIAN_WIDTH_NARROW}, |
| 62 | * or {@link #EAST_ASIAN_WIDTH_WIDE}. |
| 63 | * |
| 64 | * @param src character array of input to measure |
| 65 | * @param start first character in array to measure |
| 66 | * @param count maximum number of characters to measure |
| 67 | * @param dest byte array of results for each character in src |
| 68 | */ |
| 69 | public native static void getEastAsianWidths(char[] src, int start, |
| 70 | int count, byte[] dest); |
| 71 | |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 72 | /** |
| 73 | * Replace the specified slice of <code>text</code> with the chars' |
| 74 | * right-to-left mirrors (if any), returning true if any |
| 75 | * replacements were made. |
| 76 | */ |
| 77 | public native static boolean mirror(char[] text, int start, int count); |
| 78 | |
| 79 | /** |
| 80 | * Return the right-to-left mirror (or the original char if none) |
| 81 | * of the specified char. |
| 82 | */ |
| 83 | public native static char getMirror(char ch); |
| 84 | } |