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Merge "Update frameworks/base Emoji.java to Unicode 13." into rvc-dev

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This commit is contained in:
TreeHugger Robot
2020-03-20 03:29:49 +00:00
committed by Android (Google) Code Review
parent 3fe090f737 b573a9d949
commit 52eaaaa99a
4 changed files with 33 additions and 68 deletions
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34
core/java/android/text/AndroidBidi.java
View File

@@ -17,11 +17,7 @@
package android.text;
import android.compat.annotation.UnsupportedAppUsage;
import android.icu.lang.UCharacter;
import android.icu.lang.UCharacterDirection;
import android.icu.lang.UProperty;
import android.icu.text.Bidi;
import android.icu.text.BidiClassifier;
import android.text.Layout.Directions;
import com.android.internal.annotations.VisibleForTesting;
@@ -33,32 +29,6 @@ import com.android.internal.annotations.VisibleForTesting;
@VisibleForTesting(visibility = VisibleForTesting.Visibility.PACKAGE)
public class AndroidBidi {
/**
* Overrides ICU {@link BidiClassifier} in order to correctly handle character directions for
* newest emoji that ICU is not aware of.
*/
public static class EmojiBidiOverride extends BidiClassifier {
public EmojiBidiOverride() {
super(null /* No persisting object needed */);
}
// Tells ICU to use the standard Unicode value.
private static final int NO_OVERRIDE =
UCharacter.getIntPropertyMaxValue(UProperty.BIDI_CLASS) + 1;
@Override
public int classify(int c) {
if (Emoji.isNewEmoji(c)) {
// All new emoji characters in Unicode 10.0 are of the bidi class ON.
return UCharacterDirection.OTHER_NEUTRAL;
} else {
return NO_OVERRIDE;
}
}
}
private static final EmojiBidiOverride sEmojiBidiOverride = new EmojiBidiOverride();
/**
* Runs the bidi algorithm on input text.
*/
@@ -82,7 +52,6 @@ public class AndroidBidi {
default: paraLevel = Bidi.LTR; break;
}
final Bidi icuBidi = new Bidi(length /* maxLength */, 0 /* maxRunCount */);
icuBidi.setCustomClassifier(sEmojiBidiOverride);
icuBidi.setPara(chs, paraLevel, null /* embeddingLevels */);
for (int i = 0; i < length; i++) {
chInfo[i] = icuBidi.getLevelAt(i);
@@ -220,4 +189,5 @@ public class AndroidBidi {
}
return new Directions(ld);
}
}
}

9
core/java/android/text/BidiFormatter.java
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@@ -604,15 +604,10 @@ public final class BidiFormatter {
/**
* Return Character directionality. Same as {@link Character#getDirectionality(int)} except
* it overrides values for newest emoji that are not covered by ICU.
* it can override values for newest emoji that are not covered by ICU.
*/
public static byte getDirectionality(int codePoint) {
if (Emoji.isNewEmoji(codePoint)) {
// TODO: Fix or remove once emoji-data.text 5.0 is in ICU or update to 6.0.
return Character.DIRECTIONALITY_OTHER_NEUTRALS;
} else {
return Character.getDirectionality(codePoint);
}
return Character.getDirectionality(codePoint);
}
// Internal instance variables.

30
core/java/android/text/Emoji.java
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@@ -60,40 +60,16 @@ public class Emoji {
if (c == 0x1F91D || c == 0x1F93C) {
return true;
}
// Emoji Modifier Base characters new in Unicode emoji 11
// From https://www.unicode.org/Public/emoji/11.0/emoji-data.txt
// TODO: Remove once emoji-data.text 11 is in ICU or update to 11.
if ((0x1F9B5 <= c && c <= 0x1F9B6) || (0x1F9B8 <= c && c <= 0x1F9B9)) {
return true;
}
// If Android's copy of ICU is behind, check for new codepoints here.
// Consult log for implementation pattern.
return UCharacter.hasBinaryProperty(c, 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 c) {
// Emoji characters new in Unicode emoji 12
// From https://www.unicode.org/Public/emoji/12.0/emoji-data.txt
// TODO: Remove once emoji-data.text 12 is in ICU or update to 12.
if (c < 0x1F6D5 || c > 0x1FA95) {
// Optimization for characters outside the new emoji range.
return false;
}
return c == 0x1F6D5 || c == 0x1F6FA || c == 0x1F93F || c == 0x1F971 || c == 0x1F97B
|| (0x1F7E0 <= c && c <= 0x1F7EB) || (0x1F90D <= c && c <= 0x1F90F)
|| (0x1F9A5 <= c && c <= 0x1F9AA) || (0x1F9AE <= c && c <= 0x1F9AF)
|| (0x1F9BA <= c && c <= 0x1F9BF) || (0x1F9C3 <= c && c <= 0x1F9CA)
|| (0x1F9CD <= c && c <= 0x1F9CF) || (0x1FA70 <= c && c <= 0x1FA73)
|| (0x1FA78 <= c && c <= 0x1FA7A) || (0x1FA80 <= c && c <= 0x1FA82)
|| (0x1FA90 <= c && c <= 0x1FA95);
}
/**
* Returns true if the character has Emoji property.
*/
public static boolean isEmoji(int codePoint) {
return isNewEmoji(codePoint) || UCharacter.hasBinaryProperty(codePoint, UProperty.EMOJI);
return UCharacter.hasBinaryProperty(codePoint, UProperty.EMOJI);
}
// Returns true if the character can be a base character of COMBINING ENCLOSING KEYCAP.