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Calculate proximity characters in the native code 

Bug: 4343280

Change-Id: I6adaf560f7a4f1f96dcb6ec2f61f20ee3001167e
main
satok 2012-03-14 23:17:12 +09:00
parent 9945f36406
commit 1caff47ecd
4 changed files with 77 additions and 26 deletions
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15
java/src/com/android/inputmethod/keyboard/KeyDetector.java
View File

@ -260,12 +260,19 @@ public class KeyDetector {
final int touchX = getTouchX(x);
final int touchY = getTouchY(y);
for (final Key key : mKeyboard.getNearestKeys(touchX, touchY)) {
if (key.isOnKey(touchX, touchY)) {
return key;
int minDistance = Integer.MAX_VALUE;
Key primaryKey = null;
for (final Key key: mKeyboard.getNearestKeys(touchX, touchY)) {
final boolean isOnKey = key.isOnKey(touchX, touchY);
final int distance = key.squaredDistanceToEdge(touchX, touchY);
// TODO: need to take care of hitbox overlaps
if (primaryKey == null || distance < minDistance
|| (distance == minDistance && isOnKey)) {
minDistance = distance;
primaryKey = key;
}
}
return null;
return primaryKey;
}
public static String printableCode(Key key) {

4
java/src/com/android/inputmethod/latin/WordComposer.java
View File

@ -140,8 +140,8 @@ public class WordComposer {
keyX = x;
keyY = y;
} else {
codes = keyDetector.newCodeArray();
keyDetector.getNearbyCodes(x, y, codes);
final Key key = keyDetector.detectHitKey(x, y);
codes = new int[] { key != null ? key.mCode : NOT_A_CODE };
keyX = keyDetector.getTouchX(x);
keyY = keyDetector.getTouchY(y);
}

75
native/src/proximity_info.cpp
View File

@ -55,6 +55,7 @@ ProximityInfo::ProximityInfo(const std::string localeStr, const int maxProximity
mTouchPositionCorrectionEnabled(false) {
const int proximityGridLength = GRID_WIDTH * GRID_HEIGHT * MAX_PROXIMITY_CHARS_SIZE;
mProximityCharsArray = new int32_t[proximityGridLength];
mInputCodes = new int32_t[MAX_PROXIMITY_CHARS_SIZE * MAX_WORD_LENGTH_INTERNAL];
if (DEBUG_PROXIMITY_INFO) {
AKLOGI("Create proximity info array %d", proximityGridLength);
}
@ -96,6 +97,7 @@ void ProximityInfo::initializeCodeToKeyIndex() {
ProximityInfo::~ProximityInfo() {
delete[] mNormalizedSquaredDistances;
delete[] mProximityCharsArray;
delete[] mInputCodes;
}
inline int ProximityInfo::getStartIndexFromCoordinates(const int x, const int y) const {
@ -138,7 +140,7 @@ bool ProximityInfo::isOnKey(const int keyId, const int x, const int y) {
int ProximityInfo::squaredDistanceToEdge(const int keyId, const int x, const int y) {
const int left = mKeyXCoordinates[keyId];
const int top = mKeyYCoordinates[keyId];
const int right = left + mKeyWidths[keyId] + 1;
const int right = left + mKeyWidths[keyId];
const int bottom = top + mKeyHeights[keyId];
const int edgeX = x < left ? left : (x > right ? right : x);
const int edgeY = y < top ? top : (y > bottom ? bottom : y);
@ -157,10 +159,10 @@ void ProximityInfo::calculateNearbyKeyCodes(
if (c < KEYCODE_SPACE || c == primaryKey) {
continue;
}
int keyIndex = getKeyIndex(c);
const int keyIndex = getKeyIndex(c);
const bool onKey = isOnKey(keyIndex, x, y);
const int distance = squaredDistanceToEdge(keyIndex, x, y);
if (onKey || distance < MOST_COMMON_KEY_WIDTH_SQUARE) {
if (c >= KEYCODE_SPACE && (onKey || distance < MOST_COMMON_KEY_WIDTH_SQUARE)) {
inputCodes[insertPos++] = c;
if (insertPos >= MAX_PROXIMITY_CHARS_SIZE) {
if (DEBUG_DICT) {
@ -170,17 +172,17 @@ void ProximityInfo::calculateNearbyKeyCodes(
}
}
}
inputCodes[insertPos++] = ADDITIONAL_PROXIMITY_CHAR_DELIMITER_CODE;
if (insertPos >= MAX_PROXIMITY_CHARS_SIZE) {
if (DEBUG_DICT) {
assert(false);
}
return;
}
const int additionalProximitySize =
AdditionalProximityChars::getAdditionalCharsSize(&mLocaleStr, primaryKey);
if (additionalProximitySize > 0) {
inputCodes[insertPos++] = ADDITIONAL_PROXIMITY_CHAR_DELIMITER_CODE;
if (insertPos >= MAX_PROXIMITY_CHARS_SIZE) {
if (DEBUG_DICT) {
assert(false);
}
return;
}
const int32_t* additionalProximityChars =
AdditionalProximityChars::getAdditionalChars(&mLocaleStr, primaryKey);
for (int j = 0; j < additionalProximitySize; ++j) {
@ -204,13 +206,46 @@ void ProximityInfo::calculateNearbyKeyCodes(
}
}
// Add a delimiter for the proximity characters
inputCodes[insertPos] = 0;
for (int i = insertPos; i < MAX_PROXIMITY_CHARS_SIZE; ++i) {
inputCodes[i] = NOT_A_CODE;
}
}
// TODO: Calculate nearby codes here.
void ProximityInfo::setInputParams(const int* inputCodes, const int inputLength,
void ProximityInfo::setInputParams(const int32_t* inputCodes, const int inputLength,
const int* xCoordinates, const int* yCoordinates) {
mInputCodes = inputCodes;
memset(mInputCodes, 0,
MAX_WORD_LENGTH_INTERNAL * MAX_PROXIMITY_CHARS_SIZE * sizeof(mInputCodes[0]));
for (int i = 0; i < inputLength; ++i) {
const int32_t primaryKey = inputCodes[i * MAX_PROXIMITY_CHARS_SIZE];
const int x = xCoordinates[i];
const int y = yCoordinates[i];
int *proximities = &mInputCodes[i * MAX_PROXIMITY_CHARS_SIZE];
calculateNearbyKeyCodes(x, y, primaryKey, proximities);
}
if (DEBUG_PROXIMITY_CHARS) {
for (int i = 0; i < inputLength; ++i) {
AKLOGI("---");
for (int j = 0; j < MAX_PROXIMITY_CHARS_SIZE; ++j) {
int icc = mInputCodes[i * MAX_PROXIMITY_CHARS_SIZE + j];
int icfjc = inputCodes[i * MAX_PROXIMITY_CHARS_SIZE + j];
icc+= 0;
icfjc += 0;
AKLOGI("--- (%d)%c,%c", i, icc, icfjc);
AKLOGI("--- A<%d>,B<%d>", icc, icfjc);
}
}
}
//Keep for debug, sorry
//for (int i = 0; i < MAX_WORD_LENGTH_INTERNAL * MAX_PROXIMITY_CHARS_SIZE; ++i) {
//if (i < inputLength * MAX_PROXIMITY_CHARS_SIZE) {
//mInputCodes[i] = mInputCodesFromJava[i];
//} else {
// mInputCodes[i] = 0;
// }
//}
mInputXCoordinates = xCoordinates;
mInputYCoordinates = yCoordinates;
mTouchPositionCorrectionEnabled =
@ -246,8 +281,9 @@ void ProximityInfo::setInputParams(const int* inputCodes, const int inputLength,
}
for (int j = 0; j < MAX_PROXIMITY_CHARS_SIZE && proximityChars[j] > 0; ++j) {
const int currentChar = proximityChars[j];
const int keyIndex = getKeyIndex(currentChar);
const float squaredDistance = calculateNormalizedSquaredDistance(keyIndex, i);
const float squaredDistance = hasInputCoordinates()
? calculateNormalizedSquaredDistance(getKeyIndex(currentChar), i)
: NOT_A_DISTANCE_FLOAT;
if (squaredDistance >= 0.0f) {
mNormalizedSquaredDistances[i * MAX_PROXIMITY_CHARS_SIZE + j] =
(int)(squaredDistance * NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR);
@ -267,7 +303,6 @@ inline float square(const float x) { return x * x; }
float ProximityInfo::calculateNormalizedSquaredDistance(
const int keyIndex, const int inputIndex) const {
static const float NOT_A_DISTANCE_FLOAT = -1.0f;
if (keyIndex == NOT_A_INDEX) {
return NOT_A_DISTANCE_FLOAT;
}
@ -282,8 +317,12 @@ float ProximityInfo::calculateNormalizedSquaredDistance(
return squaredDistance / squaredRadius;
}
bool ProximityInfo::hasInputCoordinates() const {
return mInputXCoordinates && mInputYCoordinates;
}
int ProximityInfo::getKeyIndex(const int c) const {
if (KEY_COUNT == 0 || !mInputXCoordinates || !mInputYCoordinates) {
if (KEY_COUNT == 0) {
// We do not have the coordinate data
return NOT_A_INDEX;
}

9
native/src/proximity_info.h
View File

@ -53,7 +53,7 @@ class ProximityInfo {
const float *sweetSpotCenterYs, const float *sweetSpotRadii);
~ProximityInfo();
bool hasSpaceProximity(const int x, const int y) const;
void setInputParams(const int *inputCodes, const int inputLength,
void setInputParams(const int32_t *inputCodes, const int inputLength,
const int *xCoordinates, const int *yCoordinates);
const int* getProximityCharsAt(const int index) const;
unsigned short getPrimaryCharAt(const int index) const;
@ -77,12 +77,15 @@ class ProximityInfo {
static const int MAX_KEY_COUNT_IN_A_KEYBOARD = 64;
// The upper limit of the char code in mCodeToKeyIndex
static const int MAX_CHAR_CODE = 127;
static const float NOT_A_DISTANCE_FLOAT = -1.0f;
static const int NOT_A_CODE = -1;
int getStartIndexFromCoordinates(const int x, const int y) const;
void initializeCodeToKeyIndex();
float calculateNormalizedSquaredDistance(const int keyIndex, const int inputIndex) const;
float calculateSquaredDistanceFromSweetSpotCenter(
const int keyIndex, const int inputIndex) const;
bool hasInputCoordinates() const;
int getKeyIndex(const int c) const;
bool hasSweetSpotData(const int keyIndex) const {
// When there are no calibration data for a key,
@ -105,7 +108,9 @@ class ProximityInfo {
const int KEY_COUNT;
const bool HAS_TOUCH_POSITION_CORRECTION_DATA;
const std::string mLocaleStr;
const int *mInputCodes;
// TODO: remove this
const int *mInputCodesFromJava;
int32_t *mInputCodes;
const int *mInputXCoordinates;
const int *mInputYCoordinates;
bool mTouchPositionCorrectionEnabled;