Merge "Add BatchInputArbiter"
This commit is contained in:
Tadashi G. Takaoka
Android (Google) Code Review
commit
3fbcf48591
4 changed files with 269 additions and 107 deletions
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@ -22,12 +22,13 @@ import android.os.SystemClock;
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import android.util.Log;
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import android.view.MotionEvent;
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import com.android.inputmethod.keyboard.internal.BatchInputArbiter;
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import com.android.inputmethod.keyboard.internal.BatchInputArbiter.BatchInputArbiterListener;
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import com.android.inputmethod.keyboard.internal.BogusMoveEventDetector;
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import com.android.inputmethod.keyboard.internal.GestureEnabler;
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import com.android.inputmethod.keyboard.internal.GestureStrokeDrawingParams;
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import com.android.inputmethod.keyboard.internal.GestureStrokeDrawingPoints;
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import com.android.inputmethod.keyboard.internal.GestureStrokeRecognitionParams;
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import com.android.inputmethod.keyboard.internal.GestureStrokeRecognitionPoints;
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import com.android.inputmethod.keyboard.internal.PointerTrackerQueue;
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import com.android.inputmethod.keyboard.internal.TypingTimeRecorder;
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import com.android.inputmethod.latin.Constants;
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@ -43,7 +44,8 @@ import com.android.inputmethod.research.ResearchLogger;
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import java.util.ArrayList;
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public final class PointerTracker implements PointerTrackerQueue.Element {
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public final class PointerTracker implements PointerTrackerQueue.Element,
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BatchInputArbiterListener {
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private static final String TAG = PointerTracker.class.getSimpleName();
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private static final boolean DEBUG_EVENT = false;
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private static final boolean DEBUG_MOVE_EVENT = false;
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@ -160,12 +162,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
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private boolean mIsDetectingGesture = false; // per PointerTracker.
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private static boolean sInGesture = false;
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private static long sGestureFirstDownTime;
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private static TypingTimeRecorder sTypingTimeRecorder;
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private static final InputPointers sAggregatedPointers = new InputPointers(
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GestureStrokeRecognitionPoints.DEFAULT_CAPACITY);
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private static int sLastRecognitionPointSize = 0; // synchronized using sAggregatedPointers
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private static long sLastRecognitionTime = 0; // synchronized using sAggregatedPointers
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// The position and time at which first down event occurred.
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private long mDownTime;
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@ -203,7 +200,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
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// true if dragging finger is allowed.
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private boolean mIsAllowedDraggingFinger;
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private final GestureStrokeRecognitionPoints mGestureStrokeRecognitionPoints;
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private final BatchInputArbiter mBatchInputArbiter;
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private final GestureStrokeDrawingPoints mGestureStrokeDrawingPoints;
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// TODO: Add PointerTrackerFactory singleton and move some class static methods into it.
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@ -287,8 +284,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
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private PointerTracker(final int id) {
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mPointerId = id;
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mGestureStrokeRecognitionPoints = new GestureStrokeRecognitionPoints(
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id, sGestureStrokeRecognitionParams);
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mBatchInputArbiter = new BatchInputArbiter(id, sGestureStrokeRecognitionParams);
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mGestureStrokeDrawingPoints = new GestureStrokeDrawingPoints(sGestureStrokeDrawingParams);
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}
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@ -410,7 +406,7 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
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mKeyboardLayoutHasBeenChanged = true;
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final int keyWidth = mKeyboard.mMostCommonKeyWidth;
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final int keyHeight = mKeyboard.mMostCommonKeyHeight;
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mGestureStrokeRecognitionPoints.setKeyboardGeometry(keyWidth, mKeyboard.mOccupiedHeight);
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mBatchInputArbiter.setKeyboardGeometry(keyWidth, mKeyboard.mOccupiedHeight);
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final Key newKey = mKeyDetector.detectHitKey(mKeyX, mKeyY);
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if (newKey != mCurrentKey) {
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if (sDrawingProxy != null) {
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@ -578,27 +574,16 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
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return sPointerTrackerQueue.getOldestElement() == this;
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}
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/**
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* Determines whether the batch input has started or not.
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* @return true if the batch input has started successfully.
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*/
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private boolean mayStartBatchInput() {
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if (!mGestureStrokeRecognitionPoints.isStartOfAGesture()) {
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return false;
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}
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// Implements {@link BatchInputArbiterListener}.
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@Override
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public void onStartBatchInput() {
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if (DEBUG_LISTENER) {
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Log.d(TAG, String.format("[%d] onStartBatchInput", mPointerId));
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}
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synchronized (sAggregatedPointers) {
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sAggregatedPointers.reset();
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sLastRecognitionPointSize = 0;
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sLastRecognitionTime = 0;
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sListener.onStartBatchInput();
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dismissAllMoreKeysPanels();
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sTimerProxy.cancelLongPressTimerOf(this);
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}
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return true;
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}
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private void showGestureTrail() {
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if (mIsTrackingForActionDisabled) {
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@ -610,55 +595,38 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
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}
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public void updateBatchInputByTimer(final long syntheticMoveEventTime) {
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final int gestureTime = (int)(syntheticMoveEventTime - sGestureFirstDownTime);
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mGestureStrokeRecognitionPoints.duplicateLastPointWith(gestureTime);
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updateBatchInput(syntheticMoveEventTime);
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mBatchInputArbiter.updateBatchInputByTimer(syntheticMoveEventTime, this);
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}
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private void updateBatchInput(final long moveEventTime) {
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synchronized (sAggregatedPointers) {
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final GestureStrokeRecognitionPoints stroke = mGestureStrokeRecognitionPoints;
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stroke.appendIncrementalBatchPoints(sAggregatedPointers);
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final int size = sAggregatedPointers.getPointerSize();
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if (size > sLastRecognitionPointSize
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&& stroke.hasRecognitionTimePast(moveEventTime, sLastRecognitionTime)) {
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// Implements {@link BatchInputArbiterListener}.
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@Override
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public void onUpdateBatchInput(final InputPointers aggregatedPointers, final long eventTime) {
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if (DEBUG_LISTENER) {
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Log.d(TAG, String.format("[%d] onUpdateBatchInput: batchPoints=%d", mPointerId,
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size));
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}
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sTimerProxy.startUpdateBatchInputTimer(this);
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sListener.onUpdateBatchInput(sAggregatedPointers);
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// The listener may change the size of the pointers (when auto-committing
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// for example), so we need to get the size from the pointers again.
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sLastRecognitionPointSize = sAggregatedPointers.getPointerSize();
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sLastRecognitionTime = moveEventTime;
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}
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aggregatedPointers.getPointerSize()));
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}
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sListener.onUpdateBatchInput(aggregatedPointers);
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}
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/**
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* Determines whether the batch input has ended successfully or continues.
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* @param upEventTime the event time of this pointer up.
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* @return true if the batch input has ended successfully, false if it continues.
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*/
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private boolean mayEndBatchInput(final long upEventTime) {
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boolean hasEndBatchInputSuccessfully = false;
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synchronized (sAggregatedPointers) {
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mGestureStrokeRecognitionPoints.appendAllBatchPoints(sAggregatedPointers);
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if (getActivePointerTrackerCount() == 1) {
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hasEndBatchInputSuccessfully = true;
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sTypingTimeRecorder.onEndBatchInput(upEventTime);
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// Implements {@link BatchInputArbiterListener}.
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@Override
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public void onStartUpdateBatchInputTimer() {
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sTimerProxy.startUpdateBatchInputTimer(this);
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}
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// Implements {@link BatchInputArbiterListener}.
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@Override
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public void onEndBatchInput(final InputPointers aggregatedPointers, final long eventTime) {
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sTypingTimeRecorder.onEndBatchInput(eventTime);
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sTimerProxy.cancelAllUpdateBatchInputTimers();
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if (!mIsTrackingForActionDisabled) {
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if (mIsTrackingForActionDisabled) {
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return;
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}
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if (DEBUG_LISTENER) {
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Log.d(TAG, String.format("[%d] onEndBatchInput : batchPoints=%d",
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mPointerId, sAggregatedPointers.getPointerSize()));
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mPointerId, aggregatedPointers.getPointerSize()));
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}
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sListener.onEndBatchInput(sAggregatedPointers);
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}
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}
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}
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return hasEndBatchInputSuccessfully;
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sListener.onEndBatchInput(aggregatedPointers);
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}
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private void cancelBatchInput() {
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@ -753,15 +721,10 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
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mIsDetectingGesture = (mKeyboard != null) && mKeyboard.mId.isAlphabetKeyboard()
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&& key != null && !key.isModifier();
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if (mIsDetectingGesture) {
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if (getActivePointerTrackerCount() == 1) {
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sGestureFirstDownTime = eventTime;
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}
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final int elapsedTimeSinceFirstDown = (int)(eventTime - sGestureFirstDownTime);
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final int elapsedTimeSinceLastTyping = (int)(
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eventTime - sTypingTimeRecorder.getLastLetterTypingTime());
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mGestureStrokeRecognitionPoints.onDownEvent(x, y, elapsedTimeSinceFirstDown,
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elapsedTimeSinceLastTyping);
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mGestureStrokeDrawingPoints.onDownEvent(x, y, elapsedTimeSinceFirstDown);
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mBatchInputArbiter.addDownEventPoint(x, y, eventTime,
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sTypingTimeRecorder.getLastLetterTypingTime(), getActivePointerTrackerCount());
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mGestureStrokeDrawingPoints.onDownEvent(
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x, y, mBatchInputArbiter.getElapsedTimeSinceFirstDown(eventTime));
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}
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}
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@ -820,31 +783,27 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
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if (!mIsDetectingGesture) {
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return;
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}
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final int beforeLength = mGestureStrokeRecognitionPoints.getLength();
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final int elapsedTimeSinceFirstDown = (int)(eventTime - sGestureFirstDownTime);
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final boolean onValidArea = mGestureStrokeRecognitionPoints.addPointOnKeyboard(
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x, y, elapsedTimeSinceFirstDown, isMajorEvent);
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if (mGestureStrokeRecognitionPoints.getLength() > beforeLength) {
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sTimerProxy.startUpdateBatchInputTimer(this);
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}
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final boolean onValidArea = mBatchInputArbiter.addMoveEventPoint(
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x, y, eventTime, isMajorEvent, this);
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// If the move event goes out from valid batch input area, cancel batch input.
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if (!onValidArea) {
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cancelBatchInput();
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return;
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}
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mGestureStrokeDrawingPoints.onMoveEvent(x, y, elapsedTimeSinceFirstDown);
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mGestureStrokeDrawingPoints.onMoveEvent(
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x, y, mBatchInputArbiter.getElapsedTimeSinceFirstDown(eventTime));
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// If the MoreKeysPanel is showing then do not attempt to enter gesture mode. However,
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// the gestured touch points are still being recorded in case the panel is dismissed.
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if (isShowingMoreKeysPanel()) {
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return;
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}
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if (!sInGesture && key != null && Character.isLetter(key.getCode())
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&& mayStartBatchInput()) {
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&& mBatchInputArbiter.mayStartBatchInput(this)) {
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sInGesture = true;
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}
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if (sInGesture) {
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if (key != null) {
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updateBatchInput(eventTime);
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mBatchInputArbiter.updateBatchInput(eventTime, this);
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}
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showGestureTrail();
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}
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@ -1097,7 +1056,8 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
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if (currentKey != null) {
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callListenerOnRelease(currentKey, currentKey.getCode(), true /* withSliding */);
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}
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if (mayEndBatchInput(eventTime)) {
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if (mBatchInputArbiter.mayEndBatchInput(
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eventTime, getActivePointerTrackerCount(), this)) {
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sInGesture = false;
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}
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showGestureTrail();
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@ -0,0 +1,181 @@
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/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.inputmethod.keyboard.internal;
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import com.android.inputmethod.latin.Constants;
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import com.android.inputmethod.latin.InputPointers;
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/**
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* This class arbitrates batch input.
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* An instance of this class holds a {@link GestureStrokeRecognitionPoints}.
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* And it arbitrates multiple strokes gestured by multiple fingers and aggregates those gesture
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* points into one batch input.
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*/
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public class BatchInputArbiter {
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public interface BatchInputArbiterListener {
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public void onStartBatchInput();
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public void onUpdateBatchInput(
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final InputPointers aggregatedPointers, final long moveEventTime);
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public void onStartUpdateBatchInputTimer();
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public void onEndBatchInput(final InputPointers aggregatedPointers, final long upEventTime);
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}
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// The starting time of the first stroke of a gesture input.
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private static long sGestureFirstDownTime;
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// The {@link InputPointers} that includes all events of a gesture input.
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private static final InputPointers sAggregatedPointers = new InputPointers(
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Constants.DEFAULT_GESTURE_POINTS_CAPACITY);
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private static int sLastRecognitionPointSize = 0; // synchronized using sAggregatedPointers
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private static long sLastRecognitionTime = 0; // synchronized using sAggregatedPointers
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private final GestureStrokeRecognitionPoints mRecognitionPoints;
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public BatchInputArbiter(final int pointerId, final GestureStrokeRecognitionParams params) {
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mRecognitionPoints = new GestureStrokeRecognitionPoints(pointerId, params);
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}
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public void setKeyboardGeometry(final int keyWidth, final int keyboardHeight) {
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mRecognitionPoints.setKeyboardGeometry(keyWidth, keyboardHeight);
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}
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/**
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* Calculate elapsed time since the first gesture down.
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* @param eventTime the time of this event.
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* @return the elapsed time in millisecond from the first gesture down.
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*/
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public int getElapsedTimeSinceFirstDown(final long eventTime) {
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return (int)(eventTime - sGestureFirstDownTime);
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}
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/**
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* Add a down event point.
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* @param x the x-coordinate of this down event.
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* @param y the y-coordinate of this down event.
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* @param downEventTime the time of this down event.
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* @param lastLetterTypingTime the last typing input time.
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* @param activePointerCount the number of active pointers when this pointer down event occurs.
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*/
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public void addDownEventPoint(final int x, final int y, final long downEventTime,
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final long lastLetterTypingTime, final int activePointerCount) {
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if (activePointerCount == 1) {
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sGestureFirstDownTime = downEventTime;
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}
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final int elapsedTimeSinceFirstDown = getElapsedTimeSinceFirstDown(downEventTime);
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final int elapsedTimeSinceLastTyping = (int)(downEventTime - lastLetterTypingTime);
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mRecognitionPoints.addDownEventPoint(
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x, y, elapsedTimeSinceFirstDown, elapsedTimeSinceLastTyping);
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}
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/**
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* Add a move event point.
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* @param x the x-coordinate of this move event.
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* @param y the y-coordinate of this move event.
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* @param moveEventTime the time of this move event.
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* @param isMajorEvent false if this is a historical move event.
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* @param listener {@link BatchInputArbiterListener#onStartUpdateBatchInputTimer()} of this
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* <code>listener</code> may be called if enough move points have been added.
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* @return true if this move event occurs on the valid gesture area.
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*/
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public boolean addMoveEventPoint(final int x, final int y, final long moveEventTime,
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final boolean isMajorEvent, final BatchInputArbiterListener listener) {
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final int beforeLength = mRecognitionPoints.getLength();
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final boolean onValidArea = mRecognitionPoints.addEventPoint(
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x, y, getElapsedTimeSinceFirstDown(moveEventTime), isMajorEvent);
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if (mRecognitionPoints.getLength() > beforeLength) {
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listener.onStartUpdateBatchInputTimer();
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}
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return onValidArea;
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}
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/**
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* Determine whether the batch input has started or not.
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* @param listener {@link BatchInputArbiterListener#onStartBatchInput()} of this
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* <code>listener</code> will be called when the batch input has started successfully.
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* @return true if the batch input has started successfully.
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*/
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public boolean mayStartBatchInput(final BatchInputArbiterListener listener) {
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if (!mRecognitionPoints.isStartOfAGesture()) {
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return false;
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}
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synchronized (sAggregatedPointers) {
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sAggregatedPointers.reset();
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sLastRecognitionPointSize = 0;
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sLastRecognitionTime = 0;
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listener.onStartBatchInput();
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}
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return true;
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}
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/**
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* Add synthetic move event point. After adding the point,
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* {@link #updateBatchInput(long,BatchInputArbiterListener)} will be called internally.
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* @param syntheticMoveEventTime the synthetic move event time.
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* @param listener the listener to be passed to
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* {@link #updateBatchInput(long,BatchInputArbiterListener)}.
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*/
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public void updateBatchInputByTimer(final long syntheticMoveEventTime,
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final BatchInputArbiterListener listener) {
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mRecognitionPoints.duplicateLastPointWith(
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getElapsedTimeSinceFirstDown(syntheticMoveEventTime));
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updateBatchInput(syntheticMoveEventTime, listener);
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}
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/**
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* Determine whether we have enough gesture points to lookup dictionary.
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* @param moveEventTime the time of this move event.
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* @param listener {@link BatchInputArbiterListener#onUpdateBatchInput(InputPointers,long)} of
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* this <code>listener</code> will be called when enough event points we have. Also
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* {@link BatchInputArbiterListener#onStartUpdateBatchInputTimer()} will be called to have
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* possible future synthetic move event.
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*/
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public void updateBatchInput(final long moveEventTime,
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final BatchInputArbiterListener listener) {
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synchronized (sAggregatedPointers) {
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mRecognitionPoints.appendIncrementalBatchPoints(sAggregatedPointers);
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final int size = sAggregatedPointers.getPointerSize();
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if (size > sLastRecognitionPointSize && mRecognitionPoints.hasRecognitionTimePast(
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moveEventTime, sLastRecognitionTime)) {
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listener.onUpdateBatchInput(sAggregatedPointers, moveEventTime);
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listener.onStartUpdateBatchInputTimer();
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// The listener may change the size of the pointers (when auto-committing
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// for example), so we need to get the size from the pointers again.
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sLastRecognitionPointSize = sAggregatedPointers.getPointerSize();
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sLastRecognitionTime = moveEventTime;
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}
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}
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}
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/**
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* Determine whether the batch input has ended successfully or continues.
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* @param upEventTime the time of this up event.
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* @param activePointerCount the number of active pointers when this pointer up event occurs.
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* @param listener {@link BatchInputArbiterListener#onEndBatchInput(InputPointers,long)} of this
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* <code>listener</code> will be called when the batch input has started successfully.
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* @return true if the batch input has ended successfully.
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||||
*/
|
||||
public boolean mayEndBatchInput(final long upEventTime, final int activePointerCount,
|
||||
final BatchInputArbiterListener listener) {
|
||||
synchronized (sAggregatedPointers) {
|
||||
mRecognitionPoints.appendAllBatchPoints(sAggregatedPointers);
|
||||
if (activePointerCount == 1) {
|
||||
listener.onEndBatchInput(sAggregatedPointers, upEventTime);
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
|
@ -18,14 +18,15 @@ package com.android.inputmethod.keyboard.internal;
|
|||
|
||||
import android.util.Log;
|
||||
|
||||
import com.android.inputmethod.latin.Constants;
|
||||
import com.android.inputmethod.latin.InputPointers;
|
||||
import com.android.inputmethod.latin.utils.ResizableIntArray;
|
||||
|
||||
/**
|
||||
* This class holds event points to recognize a gesture stroke.
|
||||
* TODO: Should be final and package private class.
|
||||
* TODO: Should be package private class.
|
||||
*/
|
||||
public class GestureStrokeRecognitionPoints {
|
||||
public final class GestureStrokeRecognitionPoints {
|
||||
private static final String TAG = GestureStrokeRecognitionPoints.class.getSimpleName();
|
||||
private static final boolean DEBUG = false;
|
||||
private static final boolean DEBUG_SPEED = false;
|
||||
|
|
@ -34,12 +35,13 @@ public class GestureStrokeRecognitionPoints {
|
|||
// Proportional to the keyboard height.
|
||||
public static final float EXTRA_GESTURE_TRAIL_AREA_ABOVE_KEYBOARD_RATIO = 0.25f;
|
||||
|
||||
public static final int DEFAULT_CAPACITY = 128;
|
||||
|
||||
private final int mPointerId;
|
||||
private final ResizableIntArray mEventTimes = new ResizableIntArray(DEFAULT_CAPACITY);
|
||||
private final ResizableIntArray mXCoordinates = new ResizableIntArray(DEFAULT_CAPACITY);
|
||||
private final ResizableIntArray mYCoordinates = new ResizableIntArray(DEFAULT_CAPACITY);
|
||||
private final ResizableIntArray mEventTimes = new ResizableIntArray(
|
||||
Constants.DEFAULT_GESTURE_POINTS_CAPACITY);
|
||||
private final ResizableIntArray mXCoordinates = new ResizableIntArray(
|
||||
Constants.DEFAULT_GESTURE_POINTS_CAPACITY);
|
||||
private final ResizableIntArray mYCoordinates = new ResizableIntArray(
|
||||
Constants.DEFAULT_GESTURE_POINTS_CAPACITY);
|
||||
|
||||
private final GestureStrokeRecognitionParams mRecognitionParams;
|
||||
|
||||
|
|
@ -67,12 +69,14 @@ public class GestureStrokeRecognitionPoints {
|
|||
|
||||
private static final int MSEC_PER_SEC = 1000;
|
||||
|
||||
// TODO: Make this package private
|
||||
public GestureStrokeRecognitionPoints(final int pointerId,
|
||||
final GestureStrokeRecognitionParams recognitionParams) {
|
||||
mPointerId = pointerId;
|
||||
mRecognitionParams = recognitionParams;
|
||||
}
|
||||
|
||||
// TODO: Make this package private
|
||||
public void setKeyboardGeometry(final int keyWidth, final int keyboardHeight) {
|
||||
mKeyWidth = keyWidth;
|
||||
mMinYCoordinate = -(int)(keyboardHeight * EXTRA_GESTURE_TRAIL_AREA_ABOVE_KEYBOARD_RATIO);
|
||||
|
|
@ -99,11 +103,13 @@ public class GestureStrokeRecognitionPoints {
|
|||
}
|
||||
}
|
||||
|
||||
// TODO: Make this package private
|
||||
public int getLength() {
|
||||
return mEventTimes.getLength();
|
||||
}
|
||||
|
||||
public void onDownEvent(final int x, final int y, final int elapsedTimeSinceFirstDown,
|
||||
// TODO: Make this package private
|
||||
public void addDownEventPoint(final int x, final int y, final int elapsedTimeSinceFirstDown,
|
||||
final int elapsedTimeSinceLastTyping) {
|
||||
reset();
|
||||
if (elapsedTimeSinceLastTyping < mRecognitionParams.mStaticTimeThresholdAfterFastTyping) {
|
||||
|
|
@ -113,7 +119,9 @@ public class GestureStrokeRecognitionPoints {
|
|||
Log.d(TAG, String.format("[%d] onDownEvent: dT=%3d%s", mPointerId,
|
||||
elapsedTimeSinceLastTyping, mAfterFastTyping ? " afterFastTyping" : ""));
|
||||
}
|
||||
addPointOnKeyboard(x, y, elapsedTimeSinceFirstDown, true /* isMajorEvent */);
|
||||
// Call {@link #addEventPoint(int,int,int,boolean)} to record this down event point as a
|
||||
// major event point.
|
||||
addEventPoint(x, y, elapsedTimeSinceFirstDown, true /* isMajorEvent */);
|
||||
}
|
||||
|
||||
private int getGestureDynamicDistanceThreshold(final int deltaTime) {
|
||||
|
|
@ -137,6 +145,7 @@ public class GestureStrokeRecognitionPoints {
|
|||
return mRecognitionParams.mDynamicTimeThresholdFrom - decayedThreshold;
|
||||
}
|
||||
|
||||
// TODO: Make this package private
|
||||
public final boolean isStartOfAGesture() {
|
||||
if (!hasDetectedFastMove()) {
|
||||
return false;
|
||||
|
|
@ -167,6 +176,7 @@ public class GestureStrokeRecognitionPoints {
|
|||
return isStartOfAGesture;
|
||||
}
|
||||
|
||||
// TODO: Make this package private
|
||||
public void duplicateLastPointWith(final int time) {
|
||||
final int lastIndex = getLength() - 1;
|
||||
if (lastIndex >= 0) {
|
||||
|
|
@ -250,19 +260,20 @@ public class GestureStrokeRecognitionPoints {
|
|||
}
|
||||
|
||||
/**
|
||||
* Add a touch event as a gesture point. Returns true if the touch event is on the valid
|
||||
* gesture area.
|
||||
* @param x the x-coordinate of the touch event
|
||||
* @param y the y-coordinate of the touch event
|
||||
* Add an event point to this gesture stroke recognition points. Returns true if the event
|
||||
* point is on the valid gesture area.
|
||||
* @param x the x-coordinate of the event point
|
||||
* @param y the y-coordinate of the event point
|
||||
* @param time the elapsed time in millisecond from the first gesture down
|
||||
* @param isMajorEvent false if this is a historical move event
|
||||
* @return true if the touch event is on the valid gesture area
|
||||
* @return true if the event point is on the valid gesture area
|
||||
*/
|
||||
public boolean addPointOnKeyboard(final int x, final int y, final int time,
|
||||
// TODO: Make this package private
|
||||
public boolean addEventPoint(final int x, final int y, final int time,
|
||||
final boolean isMajorEvent) {
|
||||
final int size = getLength();
|
||||
if (size <= 0) {
|
||||
// Down event
|
||||
// The first event of this stroke (a.k.a. down event).
|
||||
appendPoint(x, y, time);
|
||||
updateMajorEvent(x, y, time);
|
||||
} else {
|
||||
|
|
@ -291,15 +302,18 @@ public class GestureStrokeRecognitionPoints {
|
|||
}
|
||||
}
|
||||
|
||||
// TODO: Make this package private
|
||||
public final boolean hasRecognitionTimePast(
|
||||
final long currentTime, final long lastRecognitionTime) {
|
||||
return currentTime > lastRecognitionTime + mRecognitionParams.mRecognitionMinimumTime;
|
||||
}
|
||||
|
||||
// TODO: Make this package private
|
||||
public final void appendAllBatchPoints(final InputPointers out) {
|
||||
appendBatchPoints(out, getLength());
|
||||
}
|
||||
|
||||
// TODO: Make this package private
|
||||
public final void appendIncrementalBatchPoints(final InputPointers out) {
|
||||
appendBatchPoints(out, mIncrementalRecognitionSize);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -257,6 +257,13 @@ public final class Constants {
|
|||
public static final int SCREEN_METRICS_LARGE_TABLET = 2;
|
||||
public static final int SCREEN_METRICS_SMALL_TABLET = 3;
|
||||
|
||||
/**
|
||||
* Default capacity of gesture points container.
|
||||
* This constant is used by {@link BatchInputArbiter} and etc. to preallocate regions that
|
||||
* contain gesture event points.
|
||||
*/
|
||||
public static final int DEFAULT_GESTURE_POINTS_CAPACITY = 128;
|
||||
|
||||
private Constants() {
|
||||
// This utility class is not publicly instantiable.
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue