1 files changed, 109 insertions, 0 deletions
diff --git a/java/src/org/kelar/inputmethod/keyboard/internal/GestureStrokeRecognitionParams.java b/java/src/org/kelar/inputmethod/keyboard/internal/GestureStrokeRecognitionParams.java
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index 000000000..8fdab5fb6
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+++ b/java/src/org/kelar/inputmethod/keyboard/internal/GestureStrokeRecognitionParams.java
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+/*
+ * Copyright (C) 2013 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.
+ */
+
+package org.kelar.inputmethod.keyboard.internal;
+
+import android.content.res.TypedArray;
+
+import org.kelar.inputmethod.latin.R;
+import org.kelar.inputmethod.latin.utils.ResourceUtils;
+
+/**
+ * This class holds parameters to control how a gesture stroke is sampled and recognized.
+ * This class also has parameters to distinguish gesture input events from fast typing events.
+ *
+ * @attr ref android.R.styleable#MainKeyboardView_gestureStaticTimeThresholdAfterFastTyping
+ * @attr ref android.R.styleable#MainKeyboardView_gestureDetectFastMoveSpeedThreshold
+ * @attr ref android.R.styleable#MainKeyboardView_gestureDynamicThresholdDecayDuration
+ * @attr ref android.R.styleable#MainKeyboardView_gestureDynamicTimeThresholdFrom
+ * @attr ref android.R.styleable#MainKeyboardView_gestureDynamicTimeThresholdTo
+ * @attr ref android.R.styleable#MainKeyboardView_gestureDynamicDistanceThresholdFrom
+ * @attr ref android.R.styleable#MainKeyboardView_gestureDynamicDistanceThresholdTo
+ * @attr ref android.R.styleable#MainKeyboardView_gestureSamplingMinimumDistance
+ * @attr ref android.R.styleable#MainKeyboardView_gestureRecognitionMinimumTime
+ * @attr ref android.R.styleable#MainKeyboardView_gestureRecognitionSpeedThreshold
+ */
+public final class GestureStrokeRecognitionParams {
+    // Static threshold for gesture after fast typing
+    public final int mStaticTimeThresholdAfterFastTyping; // msec
+    // Static threshold for starting gesture detection
+    public final float mDetectFastMoveSpeedThreshold; // keyWidth/sec
+    // Dynamic threshold for gesture after fast typing
+    public final int mDynamicThresholdDecayDuration; // msec
+    // Time based threshold values
+    public final int mDynamicTimeThresholdFrom; // msec
+    public final int mDynamicTimeThresholdTo; // msec
+    // Distance based threshold values
+    public final float mDynamicDistanceThresholdFrom; // keyWidth
+    public final float mDynamicDistanceThresholdTo; // keyWidth
+    // Parameters for gesture sampling
+    public final float mSamplingMinimumDistance; // keyWidth
+    // Parameters for gesture recognition
+    public final int mRecognitionMinimumTime; // msec
+    public final float mRecognitionSpeedThreshold; // keyWidth/sec
+
+    // Default GestureStrokeRecognitionPoints parameters.
+    public static final GestureStrokeRecognitionParams DEFAULT =
+            new GestureStrokeRecognitionParams();
+
+    private GestureStrokeRecognitionParams() {
+        // These parameter values are default and intended for testing.
+        mStaticTimeThresholdAfterFastTyping = 350; // msec
+        mDetectFastMoveSpeedThreshold = 1.5f; // keyWidth/sec
+        mDynamicThresholdDecayDuration = 450; // msec
+        mDynamicTimeThresholdFrom = 300; // msec
+        mDynamicTimeThresholdTo = 20; // msec
+        mDynamicDistanceThresholdFrom = 6.0f; // keyWidth
+        mDynamicDistanceThresholdTo = 0.35f; // keyWidth
+        // The following parameters' change will affect the result of regression test.
+        mSamplingMinimumDistance = 1.0f / 6.0f; // keyWidth
+        mRecognitionMinimumTime = 100; // msec
+        mRecognitionSpeedThreshold = 5.5f; // keyWidth/sec
+    }
+
+    public GestureStrokeRecognitionParams(final TypedArray mainKeyboardViewAttr) {
+        mStaticTimeThresholdAfterFastTyping = mainKeyboardViewAttr.getInt(
+                R.styleable.MainKeyboardView_gestureStaticTimeThresholdAfterFastTyping,
+                DEFAULT.mStaticTimeThresholdAfterFastTyping);
+        mDetectFastMoveSpeedThreshold = ResourceUtils.getFraction(mainKeyboardViewAttr,
+                R.styleable.MainKeyboardView_gestureDetectFastMoveSpeedThreshold,
+                DEFAULT.mDetectFastMoveSpeedThreshold);
+        mDynamicThresholdDecayDuration = mainKeyboardViewAttr.getInt(
+                R.styleable.MainKeyboardView_gestureDynamicThresholdDecayDuration,
+                DEFAULT.mDynamicThresholdDecayDuration);
+        mDynamicTimeThresholdFrom = mainKeyboardViewAttr.getInt(
+                R.styleable.MainKeyboardView_gestureDynamicTimeThresholdFrom,
+                DEFAULT.mDynamicTimeThresholdFrom);
+        mDynamicTimeThresholdTo = mainKeyboardViewAttr.getInt(
+                R.styleable.MainKeyboardView_gestureDynamicTimeThresholdTo,
+                DEFAULT.mDynamicTimeThresholdTo);
+        mDynamicDistanceThresholdFrom = ResourceUtils.getFraction(mainKeyboardViewAttr,
+                R.styleable.MainKeyboardView_gestureDynamicDistanceThresholdFrom,
+                DEFAULT.mDynamicDistanceThresholdFrom);
+        mDynamicDistanceThresholdTo = ResourceUtils.getFraction(mainKeyboardViewAttr,
+                R.styleable.MainKeyboardView_gestureDynamicDistanceThresholdTo,
+                DEFAULT.mDynamicDistanceThresholdTo);
+        mSamplingMinimumDistance = ResourceUtils.getFraction(mainKeyboardViewAttr,
+                R.styleable.MainKeyboardView_gestureSamplingMinimumDistance,
+                DEFAULT.mSamplingMinimumDistance);
+        mRecognitionMinimumTime = mainKeyboardViewAttr.getInt(
+                R.styleable.MainKeyboardView_gestureRecognitionMinimumTime,
+                DEFAULT.mRecognitionMinimumTime);
+        mRecognitionSpeedThreshold = ResourceUtils.getFraction(mainKeyboardViewAttr,
+                R.styleable.MainKeyboardView_gestureRecognitionSpeedThreshold,
+                DEFAULT.mRecognitionSpeedThreshold);
+    }
+}