| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.text; |
| |
| import android.icu.lang.UCharacter; |
| import android.icu.lang.UProperty; |
| |
| /** |
| * An utility class for Emoji. |
| * @hide |
| */ |
| public class Emoji { |
| public static int COMBINING_ENCLOSING_KEYCAP = 0x20E3; |
| |
| public static int ZERO_WIDTH_JOINER = 0x200D; |
| |
| public static int VARIATION_SELECTOR_16 = 0xFE0F; |
| |
| public static int CANCEL_TAG = 0xE007F; |
| |
| /** |
| * Returns true if the given code point is regional indicator symbol. |
| */ |
| public static boolean isRegionalIndicatorSymbol(int codePoint) { |
| return 0x1F1E6 <= codePoint && codePoint <= 0x1F1FF; |
| } |
| |
| /** |
| * Returns true if the given code point is emoji modifier. |
| */ |
| public static boolean isEmojiModifier(int codePoint) { |
| return UCharacter.hasBinaryProperty(codePoint, UProperty.EMOJI_MODIFIER); |
| } |
| |
| // Returns true if the given code point is emoji modifier base. |
| public static boolean isEmojiModifierBase(int codePoint) { |
| // These two characters were removed from Emoji_Modifier_Base in Emoji 4.0, but we need to |
| // keep them as emoji modifier bases since there are fonts and user-generated text out there |
| // that treats these as potential emoji bases. |
| if (codePoint == 0x1F91D || codePoint == 0x1F93C) { |
| return true; |
| } |
| // Emoji Modifier Base characters new in Unicode emoji 5.0. |
| // From http://www.unicode.org/Public/emoji/5.0/emoji-data.txt |
| // TODO: Remove once emoji-data.text 5.0 is in ICU or update to 6.0. |
| if (codePoint == 0x1F91F |
| || (0x1F931 <= codePoint && codePoint <= 0x1F932) |
| || (0x1F9D1 <= codePoint && codePoint <= 0x1F9DD)) { |
| return true; |
| } |
| return UCharacter.hasBinaryProperty(codePoint, UProperty.EMOJI_MODIFIER_BASE); |
| } |
| |
| /** |
| * Returns true if the character is a new emoji still not supported in our version of ICU. |
| */ |
| public static boolean isNewEmoji(int codePoint) { |
| // Emoji characters new in Unicode emoji 5.0. |
| // From http://www.unicode.org/Public/emoji/5.0/emoji-data.txt |
| // TODO: Remove once emoji-data.text 5.0 is in ICU or update to 6.0. |
| if (codePoint < 0x1F6F7 || codePoint > 0x1F9E6) { |
| // Optimization for characters outside the new emoji range. |
| return false; |
| } |
| return (0x1F6F7 <= codePoint && codePoint <= 0x1F6F8) |
| || codePoint == 0x1F91F |
| || (0x1F928 <= codePoint && codePoint <= 0x1F92F) |
| || (0x1F931 <= codePoint && codePoint <= 0x1F932) |
| || codePoint == 0x1F94C |
| || (0x1F95F <= codePoint && codePoint <= 0x1F96B) |
| || (0x1F992 <= codePoint && codePoint <= 0x1F997) |
| || (0x1F9D0 <= codePoint && codePoint <= 0x1F9E6); |
| } |
| |
| /** |
| * Returns true if the character has Emoji property. |
| */ |
| public static boolean isEmoji(int codePoint) { |
| return isNewEmoji(codePoint) || UCharacter.hasBinaryProperty(codePoint, UProperty.EMOJI); |
| } |
| |
| // Returns true if the character can be a base character of COMBINING ENCLOSING KEYCAP. |
| public static boolean isKeycapBase(int codePoint) { |
| return ('0' <= codePoint && codePoint <= '9') || codePoint == '#' || codePoint == '*'; |
| } |
| |
| /** |
| * Returns true if the character can be a part of tag_spec in emoji tag sequence. |
| * |
| * Note that 0xE007F (CANCEL TAG) is not included. |
| */ |
| public static boolean isTagSpecChar(int codePoint) { |
| return 0xE0020 <= codePoint && codePoint <= 0xE007E; |
| } |
| } |