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Move gesture detection and recognition paramters to resources

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Bug: 7032858
Change-Id: I66570a5e21cdeede1eba420c597f440ab61aa941
This commit is contained in:
Tadashi G. Takaoka 2012-10-05 12:12:54 +09:00
parent 20f07e335d
commit 80bcb99632
6 changed files with 149 additions and 46 deletions
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17
java/res/values/attrs.xml
View file

@ -127,6 +127,23 @@
<attr name="ignoreAltCodeKeyTimeout" format="integer" />
<!-- More keys keyboard will shown at touched point. -->
<attr name="showMoreKeysKeyboardAtTouchedPoint" format="boolean" />
<!-- Static threshold for gesture after fast typing (msec) -->
<attr name="gestureStaticTimeThresholdAfterFastTyping" format="integer" />
<!-- Static threshold for starting gesture detection (keyWidth%/sec) -->
<attr name="gestureDetectFastMoveSpeedThreshold" format="fraction" />
<!-- Dynamic threshold for gesture after fast typing (msec) -->
<attr name="gestureDynamicThresholdDecayDuration" format="integer" />
<!-- Time based threshold values for gesture detection (msec) -->
<attr name="gestureDynamicTimeThresholdFrom" format="integer" />
<attr name="gestureDynamicTimeThresholdTo" format="integer" />
<!-- Distance based threshold values for gesture detection (keyWidth%/sec) -->
<attr name="gestureDynamicDistanceThresholdFrom" format="fraction" />
<attr name="gestureDynamicDistanceThresholdTo" format="fraction" />
<!-- Parameter for gesture sampling (keyWidth%/sec) -->
<attr name="gestureSamplingMinimumDistance" format="fraction" />
<!-- Parameters for gesture recognition (msec) and (keyWidth%/sec) -->
<attr name="gestureRecognitionMinimumTime" format="integer" />
<attr name="gestureRecognitionSpeedThreshold" format="fraction" />
</declare-styleable>
<declare-styleable name="SuggestionStripView">

17
java/res/values/config.xml
View file

@ -69,6 +69,23 @@
<!-- Showing more keys keyboard, just above the touched point if true, aligned to the key if
false -->
<bool name="config_show_more_keys_keyboard_at_touched_point">false</bool>
<!-- Static threshold for gesture after fast typing (msec) -->
<integer name="config_gesture_static_time_threshold_after_fast_typing">350</integer>
<!-- Static threshold for starting gesture detection (keyWidth%/sec) -->
<fraction name="config_gesture_detect_fast_move_speed_threshold">150%</fraction>
<!-- Dynamic threshold for gesture after fast typing (msec) -->
<integer name="config_gesture_dynamic_threshold_decay_duration">450</integer>
<!-- Time based threshold values for gesture detection (msec) -->
<integer name="config_gesture_dynamic_time_threshold_from">300</integer>
<integer name="config_gesture_dynamic_time_threshold_to">20</integer>
<!-- Distance based threshold values for gesture detection (keyWidth%/sec) -->
<fraction name="config_gesture_dynamic_distance_threshold_from">600%</fraction>
<fraction name="config_gesture_dynamic_distance_threshold_to">35%</fraction>
<!-- Parameter for gesture sampling (keyWidth%/sec) -->
<fraction name="config_gesture_sampling_minimum_distance">16.6666%</fraction>
<!-- Parameters for gesture recognition (msec) and (keyWidth%/sec) -->
<integer name="config_gesture_recognition_minimum_time">100</integer>
<fraction name="config_gesture_recognition_speed_threshold">550%</fraction>
<!--
Configuration for auto correction
-->

11
java/res/values/styles.xml
View file

@ -94,6 +94,17 @@
<item name="languageOnSpacebarFadeoutAnimator">@anim/language_on_spacebar_fadeout</item>
<item name="altCodeKeyWhileTypingFadeoutAnimator">@anim/alt_code_key_while_typing_fadeout</item>
<item name="altCodeKeyWhileTypingFadeinAnimator">@anim/alt_code_key_while_typing_fadein</item>
<!-- Common attributes of MainKeyboardView for gesture typing detection and recognition -->
<item name="gestureStaticTimeThresholdAfterFastTyping">@integer/config_gesture_static_time_threshold_after_fast_typing</item>
<item name="gestureDetectFastMoveSpeedThreshold">@fraction/config_gesture_detect_fast_move_speed_threshold</item>
<item name="gestureDynamicThresholdDecayDuration">@integer/config_gesture_dynamic_threshold_decay_duration</item>
<item name="gestureDynamicTimeThresholdFrom">@integer/config_gesture_dynamic_time_threshold_from</item>
<item name="gestureDynamicTimeThresholdTo">@integer/config_gesture_dynamic_time_threshold_to</item>
<item name="gestureDynamicDistanceThresholdFrom">@fraction/config_gesture_dynamic_distance_threshold_from</item>
<item name="gestureDynamicDistanceThresholdTo">@fraction/config_gesture_dynamic_distance_threshold_to</item>
<item name="gestureSamplingMinimumDistance">@fraction/config_gesture_sampling_minimum_distance</item>
<item name="gestureRecognitionMinimumTime">@integer/config_gesture_recognition_minimum_time</item>
<item name="gestureRecognitionSpeedThreshold">@fraction/config_gesture_recognition_speed_threshold</item>
</style>
<style
name="MainKeyboardView"

14
java/src/com/android/inputmethod/keyboard/PointerTracker.java
View file

@ -23,6 +23,7 @@ import android.view.MotionEvent;
import com.android.inputmethod.accessibility.AccessibilityUtils;
import com.android.inputmethod.keyboard.internal.GestureStroke;
import com.android.inputmethod.keyboard.internal.GestureStroke.GestureStrokeParams;
import com.android.inputmethod.keyboard.internal.GestureStrokeWithPreviewPoints;
import com.android.inputmethod.keyboard.internal.PointerTrackerQueue;
import com.android.inputmethod.latin.CollectionUtils;
@ -135,7 +136,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
mTouchNoiseThresholdDistanceSquared = 0;
}
public PointerTrackerParams(TypedArray mainKeyboardViewAttr) {
public PointerTrackerParams(final TypedArray mainKeyboardViewAttr) {
mSlidingKeyInputEnabled = mainKeyboardViewAttr.getBoolean(
R.styleable.MainKeyboardView_slidingKeyInputEnable, false);
mTouchNoiseThresholdTime = mainKeyboardViewAttr.getInt(
@ -150,6 +151,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
// Parameters for pointer handling.
private static PointerTrackerParams sParams;
private static GestureStrokeParams sGestureStrokeParams;
private static boolean sNeedsPhantomSuddenMoveEventHack;
private static final ArrayList<PointerTracker> sTrackers = CollectionUtils.newArrayList();
@ -222,10 +224,12 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
}
sNeedsPhantomSuddenMoveEventHack = needsPhantomSuddenMoveEventHack;
sParams = PointerTrackerParams.DEFAULT;
sGestureStrokeParams = GestureStrokeParams.DEFAULT;
}
public static void setParameters(final TypedArray mainKeyboardViewAttr) {
sParams = new PointerTrackerParams(mainKeyboardViewAttr);
sGestureStrokeParams = new GestureStrokeParams(mainKeyboardViewAttr);
}
private static void updateGestureHandlingMode() {
@ -296,7 +300,8 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
throw new NullPointerException();
}
mPointerId = id;
mGestureStrokeWithPreviewPoints = new GestureStrokeWithPreviewPoints(id);
mGestureStrokeWithPreviewPoints = new GestureStrokeWithPreviewPoints(
id, sGestureStrokeParams);
setKeyDetectorInner(handler.getKeyDetector());
mListener = handler.getKeyboardActionListener();
mDrawingProxy = handler.getDrawingProxy();
@ -587,10 +592,11 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
private void mayUpdateBatchInput(final long eventTime, final Key key) {
if (key != null) {
synchronized (sAggregratedPointers) {
mGestureStrokeWithPreviewPoints.appendIncrementalBatchPoints(sAggregratedPointers);
final GestureStroke stroke = mGestureStrokeWithPreviewPoints;
stroke.appendIncrementalBatchPoints(sAggregratedPointers);
final int size = sAggregratedPointers.getPointerSize();
if (size > sLastRecognitionPointSize
&& GestureStroke.hasRecognitionTimePast(eventTime, sLastRecognitionTime)) {
&& stroke.hasRecognitionTimePast(eventTime, sLastRecognitionTime)) {
sLastRecognitionPointSize = size;
sLastRecognitionTime = eventTime;
if (DEBUG_LISTENER) {

132
java/src/com/android/inputmethod/keyboard/internal/GestureStroke.java
View file

@ -14,10 +14,13 @@
package com.android.inputmethod.keyboard.internal;
import android.content.res.TypedArray;
import android.util.Log;
import com.android.inputmethod.latin.InputPointers;
import com.android.inputmethod.latin.R;
import com.android.inputmethod.latin.ResizableIntArray;
import com.android.inputmethod.latin.ResourceUtils;
public class GestureStroke {
private static final String TAG = GestureStroke.class.getSimpleName();
@ -31,6 +34,8 @@ public class GestureStroke {
private final ResizableIntArray mXCoordinates = new ResizableIntArray(DEFAULT_CAPACITY);
private final ResizableIntArray mYCoordinates = new ResizableIntArray(DEFAULT_CAPACITY);
private final GestureStrokeParams mParams;
private int mKeyWidth; // pixel
// Static threshold for starting gesture detection
private int mDetectFastMoveSpeedThreshold; // pixel /sec
@ -51,53 +56,100 @@ public class GestureStroke {
private int mIncrementalRecognitionSize;
private int mLastIncrementalBatchSize;
// TODO: Move some of these to resource.
public static final class GestureStrokeParams {
// 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
// Static threshold for gesture after fast typing
public static final int GESTURE_STATIC_TIME_THRESHOLD_AFTER_FAST_TYPING = 350; // msec
// Default GestureStroke parameters for test.
public static final GestureStrokeParams FOR_TEST = new GestureStrokeParams();
public static final GestureStrokeParams DEFAULT = FOR_TEST;
// Static threshold for starting gesture detection
private static final float DETECT_FAST_MOVE_SPEED_THRESHOLD = 1.5f; // keyWidth / sec
private GestureStrokeParams() {
// 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
}
// Dynamic threshold for gesture after fast typing
private static final int GESTURE_DYNAMIC_THRESHOLD_DECAY_DURATION = 450; // msec
// Time based threshold values
private static final int GESTURE_DYNAMIC_TIME_THRESHOLD_FROM = 300; // msec
private static final int GESTURE_DYNAMIC_TIME_THRESHOLD_TO = 20; // msec
// Distance based threshold values
private static final float GESTURE_DYNAMIC_DISTANCE_THRESHOLD_FROM = 6.0f; // keyWidth
private static final float GESTURE_DYNAMIC_DISTANCE_THRESHOLD_TO = 0.35f; // keyWidth
// Parameters for gesture sampling
private static final float GESTURE_SAMPLING_MINIMUM_DISTANCE = 1.0f / 6.0f; // keyWidth
// Parameters for gesture recognition
private static final int GESTURE_RECOGNITION_MINIMUM_TIME = 100; // msec
private static final float GESTURE_RECOGNITION_SPEED_THRESHOLD = 5.5f; // keyWidth / sec
public GestureStrokeParams(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);
}
}
private static final int MSEC_PER_SEC = 1000;
public GestureStroke(final int pointerId) {
public GestureStroke(final int pointerId, final GestureStrokeParams params) {
mPointerId = pointerId;
mParams = params;
}
public void setKeyboardGeometry(final int keyWidth) {
mKeyWidth = keyWidth;
// TODO: Find an appropriate base metric for these length. Maybe diagonal length of the key?
mDetectFastMoveSpeedThreshold = (int)(keyWidth * DETECT_FAST_MOVE_SPEED_THRESHOLD);
mDetectFastMoveSpeedThreshold = (int)(keyWidth * mParams.mDetectFastMoveSpeedThreshold);
mGestureDynamicDistanceThresholdFrom =
(int)(keyWidth * GESTURE_DYNAMIC_DISTANCE_THRESHOLD_FROM);
mGestureDynamicDistanceThresholdTo =
(int)(keyWidth * GESTURE_DYNAMIC_DISTANCE_THRESHOLD_TO);
mGestureSamplingMinimumDistance = (int)(keyWidth * GESTURE_SAMPLING_MINIMUM_DISTANCE);
mGestureRecognitionSpeedThreshold =
(int)(keyWidth * GESTURE_RECOGNITION_SPEED_THRESHOLD);
(int)(keyWidth * mParams.mDynamicDistanceThresholdFrom);
mGestureDynamicDistanceThresholdTo = (int)(keyWidth * mParams.mDynamicDistanceThresholdTo);
mGestureSamplingMinimumDistance = (int)(keyWidth * mParams.mSamplingMinimumDistance);
mGestureRecognitionSpeedThreshold = (int)(keyWidth * mParams.mRecognitionSpeedThreshold);
if (DEBUG) {
Log.d(TAG, String.format(
"[%d] setKeyboardGeometry: keyWidth=%3d tT=%3d >> %3d tD=%3d >> %3d",
mPointerId, keyWidth,
GESTURE_DYNAMIC_TIME_THRESHOLD_FROM,
GESTURE_DYNAMIC_TIME_THRESHOLD_TO,
mParams.mDynamicTimeThresholdFrom,
mParams.mDynamicTimeThresholdTo,
mGestureDynamicDistanceThresholdFrom,
mGestureDynamicDistanceThresholdTo));
}
@ -107,7 +159,7 @@ public class GestureStroke {
final long gestureFirstDownTime, final long lastTypingTime) {
reset();
final long elapsedTimeAfterTyping = downTime - lastTypingTime;
if (elapsedTimeAfterTyping < GESTURE_STATIC_TIME_THRESHOLD_AFTER_FAST_TYPING) {
if (elapsedTimeAfterTyping < mParams.mStaticTimeThresholdAfterFastTyping) {
mAfterFastTyping = true;
}
if (DEBUG) {
@ -119,23 +171,23 @@ public class GestureStroke {
}
private int getGestureDynamicDistanceThreshold(final int deltaTime) {
if (!mAfterFastTyping || deltaTime >= GESTURE_DYNAMIC_THRESHOLD_DECAY_DURATION) {
if (!mAfterFastTyping || deltaTime >= mParams.mDynamicThresholdDecayDuration) {
return mGestureDynamicDistanceThresholdTo;
}
final int decayedThreshold =
(mGestureDynamicDistanceThresholdFrom - mGestureDynamicDistanceThresholdTo)
* deltaTime / GESTURE_DYNAMIC_THRESHOLD_DECAY_DURATION;
* deltaTime / mParams.mDynamicThresholdDecayDuration;
return mGestureDynamicDistanceThresholdFrom - decayedThreshold;
}
private int getGestureDynamicTimeThreshold(final int deltaTime) {
if (!mAfterFastTyping || deltaTime >= GESTURE_DYNAMIC_THRESHOLD_DECAY_DURATION) {
return GESTURE_DYNAMIC_TIME_THRESHOLD_TO;
if (!mAfterFastTyping || deltaTime >= mParams.mDynamicThresholdDecayDuration) {
return mParams.mDynamicTimeThresholdTo;
}
final int decayedThreshold =
(GESTURE_DYNAMIC_TIME_THRESHOLD_FROM - GESTURE_DYNAMIC_TIME_THRESHOLD_TO)
* deltaTime / GESTURE_DYNAMIC_THRESHOLD_DECAY_DURATION;
return GESTURE_DYNAMIC_TIME_THRESHOLD_FROM - decayedThreshold;
(mParams.mDynamicTimeThresholdFrom - mParams.mDynamicTimeThresholdTo)
* deltaTime / mParams.mDynamicThresholdDecayDuration;
return mParams.mDynamicTimeThresholdFrom - decayedThreshold;
}
public boolean isStartOfAGesture() {
@ -249,9 +301,9 @@ public class GestureStroke {
}
}
public static final boolean hasRecognitionTimePast(
public final boolean hasRecognitionTimePast(
final long currentTime, final long lastRecognitionTime) {
return currentTime > lastRecognitionTime + GESTURE_RECOGNITION_MINIMUM_TIME;
return currentTime > lastRecognitionTime + mParams.mRecognitionMinimumTime;
}
public void appendAllBatchPoints(final InputPointers out) {

4
java/src/com/android/inputmethod/keyboard/internal/GestureStrokeWithPreviewPoints.java
View file

@ -33,8 +33,8 @@ public final class GestureStrokeWithPreviewPoints extends GestureStroke {
// TODO: Move this to resource.
private static final float MIN_PREVIEW_SAMPLE_LENGTH_RATIO_TO_KEY_WIDTH = 0.1f;
public GestureStrokeWithPreviewPoints(final int pointerId) {
super(pointerId);
public GestureStrokeWithPreviewPoints(final int pointerId, final GestureStrokeParams params) {
super(pointerId, params);
}
@Override