Create a new directory for layout-related implementations

Change-Id: Ia227bb296f20dab0dfc03dfcde3a06c624eca76c

23 files changed, 143 insertions, 122 deletions

diff --git a/native/jni/Android.mk b/native/jni/Android.mk
index cbe9515fe..6c3c41a6c 100644
--- a/native/jni/Android.mk
+++ b/native/jni/Android.mk
@@ -53,10 +53,6 @@ LATIN_IME_CORE_SRC_FILES := \
     dictionary.cpp \
     dic_traverse_wrapper.cpp \
     digraph_utils.cpp \
-    proximity_info.cpp \
-    proximity_info_params.cpp \
-    proximity_info_state.cpp \
-    proximity_info_state_utils.cpp \
     unigram_dictionary.cpp \
     words_priority_queue.cpp \
     suggest/core/suggest.cpp \
@@ -64,6 +60,11 @@ LATIN_IME_CORE_SRC_FILES := \
         dic_node.cpp \
         dic_node_utils.cpp \
         dic_nodes_cache.cpp) \
+    $(addprefix suggest/core/layout/, \
+        proximity_info.cpp \
+        proximity_info_params.cpp \
+        proximity_info_state.cpp \
+        proximity_info_state_utils.cpp) \
     suggest/core/policy/weighting.cpp \
     suggest/core/session/dic_traverse_session.cpp \
     suggest/policyimpl/gesture/gesture_suggest_policy_factory.cpp \
diff --git a/native/jni/com_android_inputmethod_keyboard_ProximityInfo.cpp b/native/jni/com_android_inputmethod_keyboard_ProximityInfo.cpp
index dedb02abf..e312aeabc 100644
--- a/native/jni/com_android_inputmethod_keyboard_ProximityInfo.cpp
+++ b/native/jni/com_android_inputmethod_keyboard_ProximityInfo.cpp
@@ -17,10 +17,11 @@
 #define LOG_TAG "LatinIME: jni: ProximityInfo"
 
 #include "com_android_inputmethod_keyboard_ProximityInfo.h"
+
 #include "defines.h"
 #include "jni.h"
 #include "jni_common.h"
-#include "proximity_info.h"
+#include "suggest/core/layout/proximity_info.h"
 
 namespace latinime {
 
diff --git a/native/jni/src/correction.cpp b/native/jni/src/correction.cpp
index 61bf3f619..e2ad557c5 100644
--- a/native/jni/src/correction.cpp
+++ b/native/jni/src/correction.cpp
@@ -21,8 +21,8 @@
 #include "char_utils.h"
 #include "correction.h"
 #include "defines.h"
-#include "proximity_info_state.h"
-#include "suggest_utils.h"
+#include "suggest/core/layout/proximity_info_state.h"
+#include "suggest/core/layout/touch_position_correction_utils.h"
 #include "suggest/policyimpl/utils/edit_distance.h"
 #include "suggest/policyimpl/utils/damerau_levenshtein_edit_distance_policy.h"
 
@@ -676,8 +676,8 @@ inline static bool isUpperCase(unsigned short c) {
             if (i < adjustedProximityMatchedCount) {
                 multiplyIntCapped(typedLetterMultiplier, &finalFreq);
             }
-            const float factor =
-                    SuggestUtils::getLengthScalingFactor(static_cast<float>(squaredDistance));
+            const float factor = TouchPositionCorrectionUtils::getLengthScalingFactor(
+                    static_cast<float>(squaredDistance));
             if (factor > 0.0f) {
                 multiplyRate(static_cast<int>(factor * 100.0f), &finalFreq);
             } else if (squaredDistance == PROXIMITY_CHAR_WITHOUT_DISTANCE_INFO) {
diff --git a/native/jni/src/correction.h b/native/jni/src/correction.h
index a9e9b48a6..75b49952c 100644
--- a/native/jni/src/correction.h
+++ b/native/jni/src/correction.h
@@ -21,7 +21,7 @@
 
 #include "correction_state.h"
 #include "defines.h"
-#include "proximity_info_state.h"
+#include "suggest/core/layout/proximity_info_state.h"
 
 namespace latinime {
 
diff --git a/native/jni/src/geometry_utils.h b/native/jni/src/geometry_utils.h
deleted file mode 100644
index 4cbb127e8..000000000
--- a/native/jni/src/geometry_utils.h
+++ /dev/null
@@ -1,53 +0,0 @@
-/*
- * 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.
- */
-
-#ifndef LATINIME_GEOMETRY_UTILS_H
-#define LATINIME_GEOMETRY_UTILS_H
-
-#include <cmath>
-
-#include "defines.h"
-
-#define ROUND_FLOAT_10000(f) ((f) < 1000.0f && (f) > 0.001f) \
-        ? (floorf((f) * 10000.0f) / 10000.0f) : (f)
-
-namespace latinime {
-
-static inline float SQUARE_FLOAT(const float x) { return x * x; }
-
-static AK_FORCE_INLINE float getAngle(const int x1, const int y1, const int x2, const int y2) {
-    const int dx = x1 - x2;
-    const int dy = y1 - y2;
-    if (dx == 0 && dy == 0) return 0.0f;
-    return atan2f(static_cast<float>(dy), static_cast<float>(dx));
-}
-
-static AK_FORCE_INLINE float getAngleDiff(const float a1, const float a2) {
-    const float deltaA = fabsf(a1 - a2);
-    const float diff = ROUND_FLOAT_10000(deltaA);
-    if (diff > M_PI_F) {
-        const float normalizedDiff = 2.0f * M_PI_F - diff;
-        return ROUND_FLOAT_10000(normalizedDiff);
-    }
-    return diff;
-}
-
-static AK_FORCE_INLINE int getDistanceInt(const int x1, const int y1, const int x2,
-        const int y2) {
-    return static_cast<int>(hypotf(static_cast<float>(x1 - x2), static_cast<float>(y1 - y2)));
-}
-} // namespace latinime
-#endif // LATINIME_GEOMETRY_UTILS_H
diff --git a/native/jni/src/suggest/core/dicnode/dic_node_utils.cpp b/native/jni/src/suggest/core/dicnode/dic_node_utils.cpp
index 5357c3773..4fe4badc5 100644
--- a/native/jni/src/suggest/core/dicnode/dic_node_utils.cpp
+++ b/native/jni/src/suggest/core/dicnode/dic_node_utils.cpp
@@ -22,8 +22,8 @@
 #include "dic_node_utils.h"
 #include "dic_node_vector.h"
 #include "multi_bigram_map.h"
-#include "proximity_info.h"
-#include "proximity_info_state.h"
+#include "suggest/core/layout/proximity_info.h"
+#include "suggest/core/layout/proximity_info_state.h"
 
 namespace latinime {
 
diff --git a/native/jni/src/suggest/core/layout/geometry_utils.h b/native/jni/src/suggest/core/layout/geometry_utils.h
new file mode 100644
index 000000000..b667df68f
--- /dev/null
+++ b/native/jni/src/suggest/core/layout/geometry_utils.h
@@ -0,0 +1,59 @@
+/*
+ * 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.
+ */
+
+#ifndef LATINIME_GEOMETRY_UTILS_H
+#define LATINIME_GEOMETRY_UTILS_H
+
+#include <cmath>
+
+#include "defines.h"
+
+#define ROUND_FLOAT_10000(f) ((f) < 1000.0f && (f) > 0.001f) \
+        ? (floorf((f) * 10000.0f) / 10000.0f) : (f)
+
+namespace latinime {
+
+class GeometryUtils {
+ public:
+    static inline float SQUARE_FLOAT(const float x) { return x * x; }
+
+    static AK_FORCE_INLINE float getAngle(const int x1, const int y1, const int x2, const int y2) {
+        const int dx = x1 - x2;
+        const int dy = y1 - y2;
+        if (dx == 0 && dy == 0) return 0.0f;
+        return atan2f(static_cast<float>(dy), static_cast<float>(dx));
+    }
+
+    static AK_FORCE_INLINE float getAngleDiff(const float a1, const float a2) {
+        const float deltaA = fabsf(a1 - a2);
+        const float diff = ROUND_FLOAT_10000(deltaA);
+        if (diff > M_PI_F) {
+            const float normalizedDiff = 2.0f * M_PI_F - diff;
+            return ROUND_FLOAT_10000(normalizedDiff);
+        }
+        return diff;
+    }
+
+    static AK_FORCE_INLINE int getDistanceInt(const int x1, const int y1, const int x2,
+            const int y2) {
+        return static_cast<int>(hypotf(static_cast<float>(x1 - x2), static_cast<float>(y1 - y2)));
+    }
+
+ private:
+    DISALLOW_IMPLICIT_CONSTRUCTORS(GeometryUtils);
+};
+} // namespace latinime
+#endif // LATINIME_GEOMETRY_UTILS_H
diff --git a/native/jni/src/proximity_info.cpp b/native/jni/src/suggest/core/layout/proximity_info.cpp
index 88d670d61..d5ef2d8c8 100644
--- a/native/jni/src/proximity_info.cpp
+++ b/native/jni/src/suggest/core/layout/proximity_info.cpp
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#include "suggest/core/layout/proximity_info.h"
+
 #include <cstring>
 #include <cmath>
 
@@ -22,10 +24,9 @@
 #include "additional_proximity_chars.h"
 #include "char_utils.h"
 #include "defines.h"
-#include "geometry_utils.h"
 #include "jni.h"
-#include "proximity_info.h"
-#include "proximity_info_params.h"
+#include "suggest/core/layout/geometry_utils.h"
+#include "suggest/core/layout/proximity_info_params.h"
 
 namespace latinime {
 
@@ -58,7 +59,7 @@ ProximityInfo::ProximityInfo(JNIEnv *env, const jstring localeJStr,
           MOST_COMMON_KEY_WIDTH_SQUARE(mostCommonKeyWidth * mostCommonKeyWidth),
           MOST_COMMON_KEY_HEIGHT(mostCommonKeyHeight),
           NORMALIZED_SQUARED_MOST_COMMON_KEY_HYPOTENUSE(1.0f +
-                  SQUARE_FLOAT(static_cast<float>(mostCommonKeyHeight) /
+                  GeometryUtils::SQUARE_FLOAT(static_cast<float>(mostCommonKeyHeight) /
                           static_cast<float>(mostCommonKeyWidth))),
           CELL_WIDTH((keyboardWidth + gridWidth - 1) / gridWidth),
           CELL_HEIGHT((keyboardHeight + gridHeight - 1) / gridHeight),
@@ -150,7 +151,7 @@ float ProximityInfo::getNormalizedSquaredDistanceFromCenterFloatG(
     const float touchY = static_cast<float>(y);
     const float keyWidth = static_cast<float>(getMostCommonKeyWidth());
     return ProximityInfoUtils::getSquaredDistanceFloat(centerX, centerY, touchX, touchY)
-            / SQUARE_FLOAT(keyWidth);
+            / GeometryUtils::SQUARE_FLOAT(keyWidth);
 }
 
 int ProximityInfo::getCodePointOf(const int keyIndex) const {
@@ -173,7 +174,7 @@ void ProximityInfo::initializeG() {
     for (int i = 0; i < KEY_COUNT; i++) {
         mKeyKeyDistancesG[i][i] = 0;
         for (int j = i + 1; j < KEY_COUNT; j++) {
-            mKeyKeyDistancesG[i][j] = getDistanceInt(
+            mKeyKeyDistancesG[i][j] = GeometryUtils::getDistanceInt(
                     mCenterXsG[i], mCenterYsG[i], mCenterXsG[j], mCenterYsG[j]);
             mKeyKeyDistancesG[j][i] = mKeyKeyDistancesG[i][j];
         }
diff --git a/native/jni/src/proximity_info.h b/native/jni/src/suggest/core/layout/proximity_info.h
index deb9ae0de..6d2ddd4bc 100644
--- a/native/jni/src/proximity_info.h
+++ b/native/jni/src/suggest/core/layout/proximity_info.h
@@ -20,7 +20,7 @@
 #include "defines.h"
 #include "hash_map_compat.h"
 #include "jni.h"
-#include "proximity_info_utils.h"
+#include "suggest/core/layout/proximity_info_utils.h"
 
 namespace latinime {
 
diff --git a/native/jni/src/proximity_info_params.cpp b/native/jni/src/suggest/core/layout/proximity_info_params.cpp
index 2675d9e70..0e887f700 100644
--- a/native/jni/src/proximity_info_params.cpp
+++ b/native/jni/src/suggest/core/layout/proximity_info_params.cpp
@@ -15,7 +15,7 @@
  */
 
 #include "defines.h"
-#include "proximity_info_params.h"
+#include "suggest/core/layout/proximity_info_params.h"
 
 namespace latinime {
 const float ProximityInfoParams::NOT_A_DISTANCE_FLOAT = -1.0f;
diff --git a/native/jni/src/proximity_info_params.h b/native/jni/src/suggest/core/layout/proximity_info_params.h
index 4e47f7308..4e47f7308 100644
--- a/native/jni/src/proximity_info_params.h
+++ b/native/jni/src/suggest/core/layout/proximity_info_params.h
diff --git a/native/jni/src/proximity_info_state.cpp b/native/jni/src/suggest/core/layout/proximity_info_state.cpp
index cc5b736bd..fb57174fa 100644
--- a/native/jni/src/proximity_info_state.cpp
+++ b/native/jni/src/suggest/core/layout/proximity_info_state.cpp
@@ -14,6 +14,8 @@
  * limitations under the License.
  */
 
+#include "suggest/core/layout/proximity_info_state.h"
+
 #include <cstring> // for memset() and memcpy()
 #include <sstream> // for debug prints
 #include <vector>
@@ -21,10 +23,9 @@
 #define LOG_TAG "LatinIME: proximity_info_state.cpp"
 
 #include "defines.h"
-#include "geometry_utils.h"
-#include "proximity_info.h"
-#include "proximity_info_state.h"
-#include "proximity_info_state_utils.h"
+#include "suggest/core/layout/geometry_utils.h"
+#include "suggest/core/layout/proximity_info.h"
+#include "suggest/core/layout/proximity_info_state_utils.h"
 
 namespace latinime {
 
diff --git a/native/jni/src/proximity_info_state.h b/native/jni/src/suggest/core/layout/proximity_info_state.h
index bbe8af240..fd09307fe 100644
--- a/native/jni/src/proximity_info_state.h
+++ b/native/jni/src/suggest/core/layout/proximity_info_state.h
@@ -23,8 +23,8 @@
 #include "char_utils.h"
 #include "defines.h"
 #include "hash_map_compat.h"
-#include "proximity_info_params.h"
-#include "proximity_info_state_utils.h"
+#include "suggest/core/layout/proximity_info_params.h"
+#include "suggest/core/layout/proximity_info_state_utils.h"
 
 namespace latinime {
 
diff --git a/native/jni/src/proximity_info_state_utils.cpp b/native/jni/src/suggest/core/layout/proximity_info_state_utils.cpp
index 359673cd8..6f88833a2 100644
--- a/native/jni/src/proximity_info_state_utils.cpp
+++ b/native/jni/src/suggest/core/layout/proximity_info_state_utils.cpp
@@ -14,16 +14,17 @@
  * limitations under the License.
  */
 
+#include "suggest/core/layout/proximity_info_state_utils.h"
+
 #include <cmath>
 #include <cstring> // for memset()
 #include <sstream> // for debug prints
 #include <vector>
 
 #include "defines.h"
-#include "geometry_utils.h"
-#include "proximity_info.h"
-#include "proximity_info_params.h"
-#include "proximity_info_state_utils.h"
+#include "suggest/core/layout/geometry_utils.h"
+#include "suggest/core/layout/proximity_info.h"
+#include "suggest/core/layout/proximity_info_params.h"
 
 namespace latinime {
 
@@ -103,12 +104,12 @@ namespace latinime {
             const int time = times ? times[i] : -1;
 
             if (i > 1) {
-                const float prevAngle = getAngle(
+                const float prevAngle = GeometryUtils::getAngle(
                         inputXCoordinates[i - 2], inputYCoordinates[i - 2],
                         inputXCoordinates[i - 1], inputYCoordinates[i - 1]);
-                const float currentAngle = getAngle(
+                const float currentAngle = GeometryUtils::getAngle(
                         inputXCoordinates[i - 1], inputYCoordinates[i - 1], x, y);
-                sumAngle += getAngleDiff(prevAngle, currentAngle);
+                sumAngle += GeometryUtils::getAngleDiff(prevAngle, currentAngle);
             }
 
             if (pushTouchPoint(proximityInfo, maxPointToKeyLength, i, c, x, y, time,
@@ -157,7 +158,8 @@ namespace latinime {
     const float sweetSpotCenterY = proximityInfo->getSweetSpotCenterYAt(keyIndex);
     const float inputX = static_cast<float>((*sampledInputXs)[inputIndex]);
     const float inputY = static_cast<float>((*sampledInputYs)[inputIndex]);
-    return SQUARE_FLOAT(inputX - sweetSpotCenterX) + SQUARE_FLOAT(inputY - sweetSpotCenterY);
+    return GeometryUtils::SQUARE_FLOAT(inputX - sweetSpotCenterX)
+            + GeometryUtils::SQUARE_FLOAT(inputY - sweetSpotCenterY);
 }
 
 /* static */ float ProximityInfoStateUtils::calculateNormalizedSquaredDistance(
@@ -174,7 +176,8 @@ namespace latinime {
     }
     const float squaredDistance = calculateSquaredDistanceFromSweetSpotCenter(proximityInfo,
             sampledInputXs, sampledInputYs, keyIndex, inputIndex);
-    const float squaredRadius = SQUARE_FLOAT(proximityInfo->getSweetSpotRadiiAt(keyIndex));
+    const float squaredRadius = GeometryUtils::SQUARE_FLOAT(
+            proximityInfo->getSweetSpotRadiiAt(keyIndex));
     return squaredDistance / squaredRadius;
 }
 
@@ -285,7 +288,7 @@ namespace latinime {
             if (i < sampledInputSize - 1 && j >= (*sampledInputIndice)[i + 1]) {
                 break;
             }
-            length += getDistanceInt(xCoordinates[j], yCoordinates[j],
+            length += GeometryUtils::getDistanceInt(xCoordinates[j], yCoordinates[j],
                     xCoordinates[j + 1], yCoordinates[j + 1]);
             duration += times[j + 1] - times[j];
         }
@@ -296,7 +299,7 @@ namespace latinime {
                 break;
             }
             // TODO: use mSampledLengthCache instead?
-            length += getDistanceInt(xCoordinates[j], yCoordinates[j],
+            length += GeometryUtils::getDistanceInt(xCoordinates[j], yCoordinates[j],
                     xCoordinates[j + 1], yCoordinates[j + 1]);
             duration += times[j + 1] - times[j];
         }
@@ -349,7 +352,7 @@ namespace latinime {
     const int y1 = (*sampledInputYs)[index0];
     const int x2 = (*sampledInputXs)[index1];
     const int y2 = (*sampledInputYs)[index1];
-    return getAngle(x1, y1, x2, y2);
+    return GeometryUtils::getAngle(x1, y1, x2, y2);
 }
 
 // Calculating point to key distance for all near keys and returning the distance between
@@ -411,9 +414,9 @@ namespace latinime {
     }
 
     const int baseSampleRate = mostCommonKeyWidth;
-    const int distPrev = getDistanceInt(sampledInputXs->back(), sampledInputYs->back(),
-            (*sampledInputXs)[size - 2], (*sampledInputYs)[size - 2])
-                    * ProximityInfoParams::DISTANCE_BASE_SCALE;
+    const int distPrev = GeometryUtils::getDistanceInt(sampledInputXs->back(),
+            sampledInputYs->back(), (*sampledInputXs)[size - 2],
+            (*sampledInputYs)[size - 2]) * ProximityInfoParams::DISTANCE_BASE_SCALE;
     float score = 0.0f;
 
     // Location
@@ -425,10 +428,11 @@ namespace latinime {
         score += ProximityInfoParams::LOCALMIN_DISTANCE_AND_NEAR_TO_KEY_SCORE;
     }
     // Angle
-    const float angle1 = getAngle(x, y, sampledInputXs->back(), sampledInputYs->back());
-    const float angle2 = getAngle(sampledInputXs->back(), sampledInputYs->back(),
+    const float angle1 = GeometryUtils::getAngle(x, y, sampledInputXs->back(),
+            sampledInputYs->back());
+    const float angle2 = GeometryUtils::getAngle(sampledInputXs->back(), sampledInputYs->back(),
             (*sampledInputXs)[size - 2], (*sampledInputYs)[size - 2]);
-    const float angleDiff = getAngleDiff(angle1, angle2);
+    const float angleDiff = GeometryUtils::getAngleDiff(angle1, angle2);
 
     // Save corner
     if (distPrev > baseSampleRate * ProximityInfoParams::CORNER_CHECK_DISTANCE_THRESHOLD_SCALE
@@ -472,13 +476,13 @@ namespace latinime {
         }
         // Check if the last point should be skipped.
         if (isLastPoint && size > 0) {
-            if (getDistanceInt(x, y, sampledInputXs->back(), sampledInputYs->back())
+            if (GeometryUtils::getDistanceInt(x, y, sampledInputXs->back(), sampledInputYs->back())
                     * ProximityInfoParams::LAST_POINT_SKIP_DISTANCE_SCALE < mostCommonKeyWidth) {
                 // This point is not used because it's too close to the previous point.
                 if (DEBUG_GEO_FULL) {
                     AKLOGI("p0: size = %zd, x = %d, y = %d, lx = %d, ly = %d, dist = %d, "
                            "width = %d", size, x, y, sampledInputXs->back(),
-                           sampledInputYs->back(), getDistanceInt(
+                           sampledInputYs->back(), GeometryUtils::getDistanceInt(
                                    x, y, sampledInputXs->back(), sampledInputYs->back()),
                            mostCommonKeyWidth
                                    / ProximityInfoParams::LAST_POINT_SKIP_DISTANCE_SCALE);
@@ -499,7 +503,7 @@ namespace latinime {
     // Pushing point information.
     if (size > 0) {
         sampledLengthCache->push_back(
-                sampledLengthCache->back() + getDistanceInt(
+                sampledLengthCache->back() + GeometryUtils::getDistanceInt(
                         x, y, sampledInputXs->back(), sampledInputYs->back()));
     } else {
         sampledLengthCache->push_back(0);
@@ -540,7 +544,8 @@ namespace latinime {
     while (start > 0 && tempBeelineDistance < lookupRadius) {
         tempTime += times[start] - times[start - 1];
         --start;
-        tempBeelineDistance = getDistanceInt(x0, y0, xCoordinates[start], yCoordinates[start]);
+        tempBeelineDistance = GeometryUtils::getDistanceInt(x0, y0, xCoordinates[start],
+                yCoordinates[start]);
     }
     // Exclusive unless this is an edge point
     if (start > 0 && start < actualInputIndex) {
@@ -553,7 +558,8 @@ namespace latinime {
     while (end < (inputSize - 1) && tempBeelineDistance < lookupRadius) {
         tempTime += times[end + 1] - times[end];
         ++end;
-        tempBeelineDistance = getDistanceInt(x0, y0, xCoordinates[end], yCoordinates[end]);
+        tempBeelineDistance = GeometryUtils::getDistanceInt(x0, y0, xCoordinates[end],
+                yCoordinates[end]);
     }
     // Exclusive unless this is an edge point
     if (end > actualInputIndex && end < (inputSize - 1)) {
@@ -571,7 +577,7 @@ namespace latinime {
     const int y2 = yCoordinates[start];
     const int x3 = xCoordinates[end];
     const int y3 = yCoordinates[end];
-    const int beelineDistance = getDistanceInt(x2, y2, x3, y3);
+    const int beelineDistance = GeometryUtils::getDistanceInt(x2, y2, x3, y3);
     int adjustedStartTime = times[start];
     if (start == 0 && actualInputIndex == 0 && inputSize > 1) {
         adjustedStartTime += ProximityInfoParams::FIRST_POINT_TIME_OFFSET_MILLIS;
@@ -613,7 +619,7 @@ namespace latinime {
     }
     const float previousDirection = getDirection(sampledInputXs, sampledInputYs, index - 1, index);
     const float nextDirection = getDirection(sampledInputXs, sampledInputYs, index, index + 1);
-    const float directionDiff = getAngleDiff(previousDirection, nextDirection);
+    const float directionDiff = GeometryUtils::getAngleDiff(previousDirection, nextDirection);
     return directionDiff;
 }
 
@@ -636,7 +642,7 @@ namespace latinime {
     }
     const float previousDirection = getDirection(sampledInputXs, sampledInputYs, index0, index1);
     const float nextDirection = getDirection(sampledInputXs, sampledInputYs, index1, index2);
-    return getAngleDiff(previousDirection, nextDirection);
+    return GeometryUtils::getAngleDiff(previousDirection, nextDirection);
 }
 
 // This function basically converts from a length to an edit distance. Accordingly, it's obviously
diff --git a/native/jni/src/proximity_info_state_utils.h b/native/jni/src/suggest/core/layout/proximity_info_state_utils.h
index 1837c7ab6..1837c7ab6 100644
--- a/native/jni/src/proximity_info_state_utils.h
+++ b/native/jni/src/suggest/core/layout/proximity_info_state_utils.h
diff --git a/native/jni/src/proximity_info_utils.h b/native/jni/src/suggest/core/layout/proximity_info_utils.h
index 71c97e325..2204fd979 100644
--- a/native/jni/src/proximity_info_utils.h
+++ b/native/jni/src/suggest/core/layout/proximity_info_utils.h
@@ -22,8 +22,8 @@
 #include "additional_proximity_chars.h"
 #include "char_utils.h"
 #include "defines.h"
-#include "geometry_utils.h"
 #include "hash_map_compat.h"
+#include "suggest/core/layout/geometry_utils.h"
 
 namespace latinime {
 class ProximityInfoUtils {
@@ -87,7 +87,7 @@ class ProximityInfoUtils {
 
     static inline float getSquaredDistanceFloat(const float x1, const float y1, const float x2,
             const float y2) {
-        return SQUARE_FLOAT(x1 - x2) + SQUARE_FLOAT(y1 - y2);
+        return GeometryUtils::SQUARE_FLOAT(x1 - x2) + GeometryUtils::SQUARE_FLOAT(y1 - y2);
     }
 
     static inline float pointToLineSegSquaredDistanceFloat(const float x, const float y,
@@ -98,7 +98,8 @@ class ProximityInfoUtils {
         const float ray2y = y2 - y1;
 
         const float dotProduct = ray1x * ray2x + ray1y * ray2y;
-        const float lineLengthSqr = SQUARE_FLOAT(ray2x) + SQUARE_FLOAT(ray2y);
+        const float lineLengthSqr = GeometryUtils::SQUARE_FLOAT(ray2x)
+                + GeometryUtils::SQUARE_FLOAT(ray2y);
         const float projectionLengthSqr = dotProduct / lineLengthSqr;
 
         float projectionX;
@@ -121,12 +122,14 @@ class ProximityInfoUtils {
      public:
         NormalDistribution(const float u, const float sigma)
                 : mU(u), mSigma(sigma),
-                  mPreComputedNonExpPart(1.0f / sqrtf(2.0f * M_PI_F * SQUARE_FLOAT(sigma))),
-                  mPreComputedExponentPart(-1.0f / (2.0f * SQUARE_FLOAT(sigma))) {}
+                  mPreComputedNonExpPart(1.0f / sqrtf(2.0f * M_PI_F
+                          * GeometryUtils::SQUARE_FLOAT(sigma))),
+                  mPreComputedExponentPart(-1.0f / (2.0f * GeometryUtils::SQUARE_FLOAT(sigma))) {}
 
         float getProbabilityDensity(const float x) const {
             const float shiftedX = x - mU;
-            return mPreComputedNonExpPart * expf(mPreComputedExponentPart * SQUARE_FLOAT(shiftedX));
+            return mPreComputedNonExpPart
+                    * expf(mPreComputedExponentPart * GeometryUtils::SQUARE_FLOAT(shiftedX));
         }
 
      private:
diff --git a/native/jni/src/suggest_utils.h b/native/jni/src/suggest/core/layout/touch_position_correction_utils.h
index e053dd662..e7a8cae58 100644
--- a/native/jni/src/suggest_utils.h
+++ b/native/jni/src/suggest/core/layout/touch_position_correction_utils.h
@@ -14,14 +14,14 @@
  * limitations under the License.
  */
 
-#ifndef LATINIME_SUGGEST_UTILS_H
-#define LATINIME_SUGGEST_UTILS_H
+#ifndef LATINIME_TOUCH_POSITION_CORRECTION_UTILS_H
+#define LATINIME_TOUCH_POSITION_CORRECTION_UTILS_H
 
 #include "defines.h"
 #include "proximity_info_params.h"
 
 namespace latinime {
-class SuggestUtils {
+class TouchPositionCorrectionUtils {
  public:
     // TODO: (OLD) Remove
     static float getLengthScalingFactor(const float normalizedSquaredDistance) {
@@ -82,7 +82,7 @@ class SuggestUtils {
         }
     }
  private:
-    DISALLOW_IMPLICIT_CONSTRUCTORS(SuggestUtils);
+    DISALLOW_IMPLICIT_CONSTRUCTORS(TouchPositionCorrectionUtils);
 };
 } // namespace latinime
-#endif // LATINIME_SUGGEST_UTILS_H
+#endif // LATINIME_TOUCH_POSITION_CORRECTION_UTILS_H
diff --git a/native/jni/src/suggest/core/session/dic_traverse_session.h b/native/jni/src/suggest/core/session/dic_traverse_session.h
index 5aaad032d..c774eae71 100644
--- a/native/jni/src/suggest/core/session/dic_traverse_session.h
+++ b/native/jni/src/suggest/core/session/dic_traverse_session.h
@@ -23,8 +23,8 @@
 #include "defines.h"
 #include "jni.h"
 #include "multi_bigram_map.h"
-#include "proximity_info_state.h"
 #include "suggest/core/dicnode/dic_nodes_cache.h"
+#include "suggest/core/layout/proximity_info_state.h"
 
 namespace latinime {
 
diff --git a/native/jni/src/suggest/core/suggest.cpp b/native/jni/src/suggest/core/suggest.cpp
index a18794850..8fe8fbc95 100644
--- a/native/jni/src/suggest/core/suggest.cpp
+++ b/native/jni/src/suggest/core/suggest.cpp
@@ -19,11 +19,11 @@
 #include "char_utils.h"
 #include "dictionary.h"
 #include "digraph_utils.h"
-#include "proximity_info.h"
 #include "suggest/core/dicnode/dic_node.h"
 #include "suggest/core/dicnode/dic_node_priority_queue.h"
 #include "suggest/core/dicnode/dic_node_vector.h"
 #include "suggest/core/dictionary/shortcut_utils.h"
+#include "suggest/core/layout/proximity_info.h"
 #include "suggest/core/policy/scoring.h"
 #include "suggest/core/policy/traversal.h"
 #include "suggest/core/policy/weighting.h"
diff --git a/native/jni/src/suggest/policyimpl/typing/typing_traversal.h b/native/jni/src/suggest/policyimpl/typing/typing_traversal.h
index 12110d54f..b212fe101 100644
--- a/native/jni/src/suggest/policyimpl/typing/typing_traversal.h
+++ b/native/jni/src/suggest/policyimpl/typing/typing_traversal.h
@@ -21,9 +21,9 @@
 
 #include "char_utils.h"
 #include "defines.h"
-#include "proximity_info_state.h"
 #include "suggest/core/dicnode/dic_node.h"
 #include "suggest/core/dicnode/dic_node_vector.h"
+#include "suggest/core/layout/proximity_info_state.h"
 #include "suggest/core/policy/traversal.h"
 #include "suggest/core/session/dic_traverse_session.h"
 #include "suggest/policyimpl/typing/scoring_params.h"
diff --git a/native/jni/src/suggest/policyimpl/typing/typing_weighting.h b/native/jni/src/suggest/policyimpl/typing/typing_weighting.h
index 3938c0ec5..cb6abd574 100644
--- a/native/jni/src/suggest/policyimpl/typing/typing_weighting.h
+++ b/native/jni/src/suggest/policyimpl/typing/typing_weighting.h
@@ -18,8 +18,8 @@
 #define LATINIME_TYPING_WEIGHTING_H
 
 #include "defines.h"
-#include "suggest_utils.h"
 #include "suggest/core/dicnode/dic_node_utils.h"
+#include "suggest/core/layout/touch_position_correction_utils.h"
 #include "suggest/core/policy/weighting.h"
 #include "suggest/core/session/dic_traverse_session.h"
 #include "suggest/policyimpl/typing/scoring_params.h"
@@ -74,7 +74,7 @@ class TypingWeighting : public Weighting {
         // the keyboard (like accented letters)
         const float normalizedSquaredLength = traverseSession->getProximityInfoState(0)
                 ->getPointToKeyLength(pointIndex, dicNode->getNodeCodePoint());
-        const float normalizedDistance = SuggestUtils::getSweetSpotFactor(
+        const float normalizedDistance = TouchPositionCorrectionUtils::getSweetSpotFactor(
                 traverseSession->isTouchPositionCorrectionEnabled(), normalizedSquaredLength);
         const float weightedDistance = ScoringParams::DISTANCE_WEIGHT_LENGTH * normalizedDistance;
 
diff --git a/native/jni/src/suggest_options.h b/native/jni/src/suggest_options.h
index e9d7bc8a8..1b21aafcf 100644
--- a/native/jni/src/suggest_options.h
+++ b/native/jni/src/suggest_options.h
@@ -39,6 +39,8 @@ class SuggestOptions{
     }
 
  private:
+    DISALLOW_IMPLICIT_CONSTRUCTORS(SuggestOptions);
+
     // Need to update com.android.inputmethod.latin.NativeSuggestOptions when you add, remove or
     // reorder options.
     static const int IS_GESTURE = 0;
diff --git a/native/jni/src/unigram_dictionary.cpp b/native/jni/src/unigram_dictionary.cpp
index a672294b5..08cd7b7fd 100644
--- a/native/jni/src/unigram_dictionary.cpp
+++ b/native/jni/src/unigram_dictionary.cpp
@@ -23,7 +23,7 @@
 #include "defines.h"
 #include "dictionary.h"
 #include "digraph_utils.h"
-#include "proximity_info.h"
+#include "suggest/core/layout/proximity_info.h"
 #include "terminal_attributes.h"
 #include "unigram_dictionary.h"
 #include "words_priority_queue.h"