1 files changed, 139 insertions, 0 deletions
diff --git a/native/jni/src/proximity_info_state.cpp b/native/jni/src/proximity_info_state.cpp
new file mode 100644
index 000000000..149299eb6
--- /dev/null
+++ b/native/jni/src/proximity_info_state.cpp
@@ -0,0 +1,139 @@
+/*
+ * Copyright (C) 2012 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.
+ */
+
+#include <assert.h>
+#include <stdint.h>
+#include <string>
+
+#define LOG_TAG "LatinIME: proximity_info_state.cpp"
+
+#include "additional_proximity_chars.h"
+#include "defines.h"
+#include "dictionary.h"
+#include "proximity_info.h"
+#include "proximity_info_state.h"
+
+namespace latinime {
+void ProximityInfoState::initInputParams(
+        const ProximityInfo* proximityInfo, const int32_t* inputCodes, const int inputLength,
+        const int* xCoordinates, const int* yCoordinates) {
+    mProximityInfo = proximityInfo;
+    mHasTouchPositionCorrectionData = proximityInfo->hasTouchPositionCorrectionData();
+    mMostCommonKeyWidthSquare = proximityInfo->getMostCommonKeyWidthSquare();
+    mLocaleStr = proximityInfo->getLocaleStr();
+    mKeyCount = proximityInfo->getKeyCount();
+    mCellHeight = proximityInfo->getCellHeight();
+    mCellWidth = proximityInfo->getCellWidth();
+    mGridHeight = proximityInfo->getGridWidth();
+    mGridWidth = proximityInfo->getGridHeight();
+    const int normalizedSquaredDistancesLength =
+            MAX_PROXIMITY_CHARS_SIZE_INTERNAL * MAX_WORD_LENGTH_INTERNAL;
+    for (int i = 0; i < normalizedSquaredDistancesLength; ++i) {
+        mNormalizedSquaredDistances[i] = NOT_A_DISTANCE;
+    }
+
+    memset(mInputCodes, 0,
+            MAX_WORD_LENGTH_INTERNAL * MAX_PROXIMITY_CHARS_SIZE_INTERNAL * sizeof(mInputCodes[0]));
+
+    for (int i = 0; i < inputLength; ++i) {
+        const int32_t primaryKey = inputCodes[i];
+        const int x = xCoordinates[i];
+        const int y = yCoordinates[i];
+        int *proximities = &mInputCodes[i * MAX_PROXIMITY_CHARS_SIZE_INTERNAL];
+        mProximityInfo->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_INTERNAL; ++j) {
+                int icc = mInputCodes[i * MAX_PROXIMITY_CHARS_SIZE_INTERNAL + j];
+                int icfjc = inputCodes[i * MAX_PROXIMITY_CHARS_SIZE_INTERNAL + j];
+                icc += 0;
+                icfjc += 0;
+                AKLOGI("--- (%d)%c,%c", i, icc, icfjc); AKLOGI("--- A<%d>,B<%d>", icc, icfjc);
+            }
+        }
+    }
+    mInputXCoordinates = xCoordinates;
+    mInputYCoordinates = yCoordinates;
+    mTouchPositionCorrectionEnabled =
+            mHasTouchPositionCorrectionData && xCoordinates && yCoordinates;
+    mInputLength = inputLength;
+    for (int i = 0; i < inputLength; ++i) {
+        mPrimaryInputWord[i] = getPrimaryCharAt(i);
+    }
+    mPrimaryInputWord[inputLength] = 0;
+    if (DEBUG_PROXIMITY_CHARS) {
+        AKLOGI("--- initInputParams");
+    }
+    for (int i = 0; i < mInputLength; ++i) {
+        const int *proximityChars = getProximityCharsAt(i);
+        const int primaryKey = proximityChars[0];
+        const int x = xCoordinates[i];
+        const int y = yCoordinates[i];
+        if (DEBUG_PROXIMITY_CHARS) {
+            int a = x + y + primaryKey;
+            a += 0;
+            AKLOGI("--- Primary = %c, x = %d, y = %d", primaryKey, x, y);
+        }
+        for (int j = 0; j < MAX_PROXIMITY_CHARS_SIZE_INTERNAL && proximityChars[j] > 0; ++j) {
+            const int currentChar = proximityChars[j];
+            const float squaredDistance =
+                    hasInputCoordinates() ? calculateNormalizedSquaredDistance(
+                            mProximityInfo->getKeyIndex(currentChar), i) :
+                            NOT_A_DISTANCE_FLOAT;
+            if (squaredDistance >= 0.0f) {
+                mNormalizedSquaredDistances[i * MAX_PROXIMITY_CHARS_SIZE_INTERNAL + j] =
+                        (int) (squaredDistance * NORMALIZED_SQUARED_DISTANCE_SCALING_FACTOR);
+            } else {
+                mNormalizedSquaredDistances[i * MAX_PROXIMITY_CHARS_SIZE_INTERNAL + j] =
+                        (j == 0) ? EQUIVALENT_CHAR_WITHOUT_DISTANCE_INFO :
+                                PROXIMITY_CHAR_WITHOUT_DISTANCE_INFO;
+            }
+            if (DEBUG_PROXIMITY_CHARS) {
+                AKLOGI("--- Proximity (%d) = %c", j, currentChar);
+            }
+        }
+    }
+}
+
+float ProximityInfoState::calculateNormalizedSquaredDistance(
+        const int keyIndex, const int inputIndex) const {
+    if (keyIndex == NOT_AN_INDEX) {
+        return NOT_A_DISTANCE_FLOAT;
+    }
+    if (!mProximityInfo->hasSweetSpotData(keyIndex)) {
+        return NOT_A_DISTANCE_FLOAT;
+    }
+    if (NOT_A_COORDINATE == mInputXCoordinates[inputIndex]) {
+        return NOT_A_DISTANCE_FLOAT;
+    }
+    const float squaredDistance = calculateSquaredDistanceFromSweetSpotCenter(
+            keyIndex, inputIndex);
+    const float squaredRadius = square(mProximityInfo->getSweetSpotRadiiAt(keyIndex));
+    return squaredDistance / squaredRadius;
+}
+
+float ProximityInfoState::calculateSquaredDistanceFromSweetSpotCenter(
+        const int keyIndex, const int inputIndex) const {
+    const float sweetSpotCenterX = mProximityInfo->getSweetSpotCenterXAt(keyIndex);
+    const float sweetSpotCenterY = mProximityInfo->getSweetSpotCenterYAt(keyIndex);
+    const float inputX = (float)mInputXCoordinates[inputIndex];
+    const float inputY = (float)mInputYCoordinates[inputIndex];
+    return square(inputX - sweetSpotCenterX) + square(inputY - sweetSpotCenterY);
+}
+} // namespace latinime