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Some performance optimizations. 

Makes the user/contacts dictionary lookup faster. This is necessary because
there's more in these dictionaries now and it's written in Java.

Fix an auto-caps issue when moving the cursor. And do it a little lazily.

Fixed a bug that was causing user dictionary words to get a much
higher weightage than the main dictionary.
main
Amith Yamasani 2009-08-07 19:46:55 -07:00 committed by Jean-Baptiste Queru
parent f115088924
commit 3263841911
4 changed files with 71 additions and 41 deletions
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2
src/com/android/inputmethod/latin/BinaryDictionary.java
View File

@ -66,8 +66,6 @@ public class BinaryDictionary extends Dictionary {
private native int getSuggestionsNative(int dict, int[] inputCodes, int codesSize,
char[] outputChars, int[] frequencies,
int maxWordLength, int maxWords, int maxAlternatives, int skipPos);
private native void setParamsNative(int typedLetterMultiplier,
int fullWordMultiplier);
private final void loadDictionary(Context context, int resId) {
AssetManager am = context.getResources().getAssets();

91
src/com/android/inputmethod/latin/ExpandableDictionary.java
View File

@ -18,13 +18,6 @@ package com.android.inputmethod.latin;
import android.content.Context;
import com.android.inputmethod.latin.Dictionary;
import com.android.inputmethod.latin.WordComposer;
import com.android.inputmethod.latin.Dictionary.WordCallback;
import java.util.ArrayList;
import java.util.List;
/**
* Base class for an in-memory dictionary that can grow dynamically and can
* be searched for suggestions and valid words.
@ -42,14 +35,38 @@ public class ExpandableDictionary extends Dictionary {
char code;
int frequency;
boolean terminal;
List<Node> children;
NodeArray children;
}
private ArrayList<Node> mRoots;
static class NodeArray {
Node[] data;
int length = 0;
private static final int INCREMENT = 2;
NodeArray() {
data = new Node[INCREMENT];
}
void add(Node n) {
if (length + 1 > data.length) {
Node[] tempData = new Node[length + INCREMENT];
if (length > 0) {
System.arraycopy(data, 0, tempData, 0, length);
}
data = tempData;
}
data[length++] = n;
}
}
private NodeArray mRoots;
private int[][] mCodes;
ExpandableDictionary(Context context) {
mContext = context;
clearDictionary();
mCodes = new int[MAX_WORD_LENGTH][];
}
Context getContext() {
@ -64,17 +81,17 @@ public class ExpandableDictionary extends Dictionary {
addWordRec(mRoots, word, 0, frequency);
}
private void addWordRec(List<Node> children, final String word,
private void addWordRec(NodeArray children, final String word,
final int depth, final int frequency) {
final int wordLength = word.length();
final char c = word.charAt(depth);
// Does children have the current character?
final int childrenLength = children.size();
final int childrenLength = children.length;
Node childNode = null;
boolean found = false;
for (int i = 0; i < childrenLength; i++) {
childNode = children.get(i);
childNode = children.data[i];
if (childNode.code == c) {
found = true;
break;
@ -93,7 +110,7 @@ public class ExpandableDictionary extends Dictionary {
return;
}
if (childNode.children == null) {
childNode.children = new ArrayList<Node>();
childNode.children = new NodeArray();
}
addWordRec(childNode.children, word, depth + 1, frequency);
}
@ -101,10 +118,15 @@ public class ExpandableDictionary extends Dictionary {
@Override
public void getWords(final WordComposer codes, final WordCallback callback) {
mInputLength = codes.size();
mMaxDepth = mInputLength * 3;
getWordsRec(mRoots, codes, mWordBuilder, 0, false, 1.0f, 0, -1, callback);
if (mCodes.length < mInputLength) mCodes = new int[mInputLength][];
// Cache the codes so that we don't have to lookup an array list
for (int i = 0; i < mInputLength; i++) {
getWordsRec(mRoots, codes, mWordBuilder, 0, false, 1.0f, 0, i, callback);
mCodes[i] = codes.getCodesAt(i);
}
mMaxDepth = mInputLength * 3;
getWordsRec(mRoots, codes, mWordBuilder, 0, false, 1, 0, -1, callback);
for (int i = 0; i < mInputLength; i++) {
getWordsRec(mRoots, codes, mWordBuilder, 0, false, 1, 0, i, callback);
}
}
@ -124,12 +146,12 @@ public class ExpandableDictionary extends Dictionary {
/**
* Returns the word's frequency or -1 if not found
*/
private int getWordFrequencyRec(final List<Node> children, final CharSequence word,
private int getWordFrequencyRec(final NodeArray children, final CharSequence word,
final int offset, final int length) {
final int count = children.size();
final int count = children.length;
char currentChar = word.charAt(offset);
for (int j = 0; j < count; j++) {
final Node node = children.get(j);
final Node node = children.data[j];
if (node.code == currentChar) {
if (offset == length - 1) {
if (node.terminal) {
@ -165,10 +187,10 @@ public class ExpandableDictionary extends Dictionary {
* inputIndex
* @param callback the callback class for adding a word
*/
protected void getWordsRec(List<Node> roots, final WordComposer codes, final char[] word,
final int depth, boolean completion, float snr, int inputIndex, int skipPos,
protected void getWordsRec(NodeArray roots, final WordComposer codes, final char[] word,
final int depth, boolean completion, int snr, int inputIndex, int skipPos,
WordCallback callback) {
final int count = roots.size();
final int count = roots.length;
final int codeSize = mInputLength;
// Optimization: Prune out words that are too long compared to how much was typed.
if (depth > mMaxDepth) {
@ -178,20 +200,20 @@ public class ExpandableDictionary extends Dictionary {
if (codeSize <= inputIndex) {
completion = true;
} else {
currentChars = codes.getCodesAt(inputIndex);
currentChars = mCodes[inputIndex];
}
for (int i = 0; i < count; i++) {
final Node node = roots.get(i);
final Node node = roots.data[i];
final char c = node.code;
final char lowerC = toLowerCase(c);
boolean terminal = node.terminal;
List<Node> children = node.children;
int freq = node.frequency;
final boolean terminal = node.terminal;
final NodeArray children = node.children;
final int freq = node.frequency;
if (completion) {
word[depth] = c;
if (terminal) {
if (!callback.addWord(word, 0, depth + 1, (int) (freq * snr))) {
if (!callback.addWord(word, 0, depth + 1, freq * snr)) {
return;
}
}
@ -210,14 +232,15 @@ public class ExpandableDictionary extends Dictionary {
// Don't use alternatives if we're looking for missing characters
final int alternativesSize = skipPos >= 0? 1 : currentChars.length;
for (int j = 0; j < alternativesSize; j++) {
float addedAttenuation = (j > 0 ? 1f : 3f);
if (currentChars[j] == -1) {
final int addedAttenuation = (j > 0 ? 1 : 2);
final int currentChar = currentChars[j];
if (currentChar == -1) {
break;
}
if (currentChars[j] == lowerC || currentChars[j] == c) {
if (currentChar == lowerC || currentChar == c) {
word[depth] = c;
if (codes.size() == depth + 1) {
if (codeSize == depth + 1) {
if (terminal) {
if (INCLUDE_TYPED_WORD_IF_VALID
|| !same(word, depth + 1, codes.getTypedWord())) {
@ -243,7 +266,7 @@ public class ExpandableDictionary extends Dictionary {
}
protected void clearDictionary() {
mRoots = new ArrayList<Node>();
mRoots = new NodeArray();
}
static char toLowerCase(char c) {
@ -252,7 +275,7 @@ public class ExpandableDictionary extends Dictionary {
}
if (c >= 'A' && c <= 'Z') {
c = (char) (c | 32);
} else {
} else if (c > 127) {
c = Character.toLowerCase(c);
}
return c;

15
src/com/android/inputmethod/latin/LatinIME.java
View File

@ -371,6 +371,7 @@ public class LatinIME extends InputMethodService
TextEntryState.reset();
}
mJustAccepted = false;
postUpdateShiftKeyState();
}
@Override
@ -498,6 +499,11 @@ public class LatinIME extends InputMethodService
}
}
private void postUpdateShiftKeyState() {
mHandler.removeMessages(MSG_UPDATE_SHIFT_STATE);
mHandler.sendMessageDelayed(mHandler.obtainMessage(MSG_UPDATE_SHIFT_STATE), 300);
}
public void updateShiftKeyState(EditorInfo attr) {
InputConnection ic = getCurrentInputConnection();
if (attr != null && mInputView != null && mKeyboardSwitcher.isAlphabetMode()
@ -637,8 +643,7 @@ public class LatinIME extends InputMethodService
} else {
deleteChar = true;
}
mHandler.removeMessages(MSG_UPDATE_SHIFT_STATE);
mHandler.sendMessageDelayed(mHandler.obtainMessage(MSG_UPDATE_SHIFT_STATE), 300);
postUpdateShiftKeyState();
TextEntryState.backspace();
if (TextEntryState.getState() == TextEntryState.STATE_UNDO_COMMIT) {
revertLastWord(deleteChar);
@ -688,7 +693,11 @@ public class LatinIME extends InputMethodService
} else {
sendKeyChar((char)primaryCode);
}
updateShiftKeyState(getCurrentInputEditorInfo());
if (mPredicting && mComposing.length() == 1) {
updateShiftKeyState(getCurrentInputEditorInfo());
} else {
postUpdateShiftKeyState();
}
measureCps();
TextEntryState.typedCharacter((char) primaryCode, isWordSeparator(primaryCode));
}

2
src/com/android/inputmethod/latin/WordComposer.java
View File

@ -26,7 +26,7 @@ public class WordComposer {
/**
* The list of unicode values for each keystroke (including surrounding keys)
*/
private List<int[]> mCodes;
private ArrayList<int[]> mCodes;
/**
* The word chosen from the candidate list, until it is committed.