am 0cbc19b0: Merge "Restrict bogus move event detector to a horizontal movement" into jb-mr1-dev (718a0744) · Commits · e / os / android_packages_inputmethods_LatinIME

java/src/com/android/inputmethod/keyboard/PointerTracker.java

+30 −21

Original line number	Diff line number	Diff line
		@@ -180,8 +180,9 @@ public final class PointerTracker implements PointerTrackerQueue.Element {

		static final class BogusMoveEventDetector {
		// Move these thresholds to resource.
		private static final float BOGUS_MOVE_ACCUMULATED_DISTANCE_THRESHOLD = 0.70f; // in keyWidth
		private static final float BOGUS_MOVE_RADIUS_THRESHOLD = 1.50f; // in keyWidth
		// These thresholds' unit is a diagonal length of a key.
		private static final float BOGUS_MOVE_ACCUMULATED_DISTANCE_THRESHOLD = 0.53f;
		private static final float BOGUS_MOVE_RADIUS_THRESHOLD = 1.14f;

		private int mAccumulatedDistanceThreshold;
		private int mRadiusThreshold;
		@@ -191,10 +192,11 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
		private int mActualDownX;
		private int mActualDownY;

		public void setKeyboardGeometry(final int keyWidth) {
		public void setKeyboardGeometry(final int keyWidth, final int keyHeight) {
		final float keyDiagonal = (float)Math.hypot(keyWidth, keyHeight);
		mAccumulatedDistanceThreshold = (int)(
		keyWidth * BOGUS_MOVE_ACCUMULATED_DISTANCE_THRESHOLD);
		mRadiusThreshold = (int)(keyWidth * BOGUS_MOVE_RADIUS_THRESHOLD);
		keyDiagonal * BOGUS_MOVE_ACCUMULATED_DISTANCE_THRESHOLD);
		mRadiusThreshold = (int)(keyDiagonal * BOGUS_MOVE_RADIUS_THRESHOLD);
		}

		public void onActualDownEvent(final int x, final int y) {
		@@ -210,8 +212,12 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
		mAccumulatedDistanceFromDownKey += distance;
		}

		public boolean hasTraveledLongDistance() {
		return mAccumulatedDistanceFromDownKey >= mAccumulatedDistanceThreshold;
		public boolean hasTraveledLongDistance(final int x, final int y) {
		final int dx = Math.abs(x - mActualDownX);
		final int dy = Math.abs(y - mActualDownY);
		// A bogus move event should be a horizontal movement. A vertical movement might be
		// a sloppy typing and should be ignored.
		return dx >= dy && mAccumulatedDistanceFromDownKey >= mAccumulatedDistanceThreshold;
		}

		/* package */ int getDistanceFromDownEvent(final int x, final int y) {
		@@ -514,7 +520,9 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
		}
		mKeyDetector = keyDetector;
		mKeyboard = keyDetector.getKeyboard();
		mGestureStrokeWithPreviewPoints.setKeyboardGeometry(mKeyboard.mMostCommonKeyWidth);
		final int keyWidth = mKeyboard.mMostCommonKeyWidth;
		final int keyHeight = mKeyboard.mMostCommonKeyHeight;
		mGestureStrokeWithPreviewPoints.setKeyboardGeometry(keyWidth);
		final Key newKey = mKeyDetector.detectHitKey(mKeyX, mKeyY);
		if (newKey != mCurrentKey) {
		if (mDrawingProxy != null) {
		@@ -522,9 +530,8 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
		}
		// Keep {@link #mCurrentKey} that comes from previous keyboard.
		}
		final int keyWidth = mKeyboard.mMostCommonKeyWidth;
		mPhantonSuddenMoveThreshold = (int)(keyWidth * PHANTOM_SUDDEN_MOVE_THRESHOLD);
		mBogusMoveEventDetector.setKeyboardGeometry(keyWidth);
		mBogusMoveEventDetector.setKeyboardGeometry(keyWidth, keyHeight);
		}

		@Override
		@@ -962,11 +969,13 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
		&& sTimeRecorder.isInFastTyping(eventTime)
		&& mBogusMoveEventDetector.isCloseToActualDownEvent(x, y)) {
		if (DEBUG_MODE) {
		final float keyDiagonal = (float)Math.hypot(
		mKeyboard.mMostCommonKeyWidth, mKeyboard.mMostCommonKeyHeight);
		final float radiusRatio =
		(float)mBogusMoveEventDetector.getDistanceFromDownEvent(x, y)
		/ mKeyboard.mMostCommonKeyWidth;
		mBogusMoveEventDetector.getDistanceFromDownEvent(x, y)
		/ keyDiagonal;
		Log.w(TAG, String.format("[%d] onMoveEvent:"
		+ " bogus down-move-up event (raidus=%.2f keyWidth) is "
		+ " bogus down-move-up event (raidus=%.2f key diagonal) is "
		+ " translated to up[%d,%d,%s]/down[%d,%d,%s] events",
		mPointerId, radiusRatio,
		lastX, lastY, Keyboard.printableCode(oldKey.mCode),
		@@ -1146,24 +1155,24 @@ public final class PointerTracker implements PointerTrackerQueue.Element {
		final int distanceFromKeyEdgeSquared = curKey.squaredDistanceToEdge(x, y);
		if (distanceFromKeyEdgeSquared >= keyHysteresisDistanceSquared) {
		if (DEBUG_MODE) {
		final int keyWidth = mKeyboard.mMostCommonKeyWidth;
		final float distanceToEdgeRatio = (float)distanceFromKeyEdgeSquared
		/ (keyWidth * keyWidth);
		final float distanceToEdgeRatio = (float)Math.sqrt(distanceFromKeyEdgeSquared)
		/ mKeyboard.mMostCommonKeyWidth;
		Log.d(TAG, String.format("[%d] isMajorEnoughMoveToBeOnNewKey:"
		+" %.2f keyWidth from key edge",
		+" %.2f key width from key edge",
		mPointerId, distanceToEdgeRatio));
		}
		return true;
		}
		if (sNeedsProximateBogusDownMoveUpEventHack && !mIsAllowedSlidingKeyInput
		&& sTimeRecorder.isInFastTyping(eventTime)
		&& mBogusMoveEventDetector.hasTraveledLongDistance()) {
		&& mBogusMoveEventDetector.hasTraveledLongDistance(x, y)) {
		if (DEBUG_MODE) {
		final float keyDiagonal = (float)Math.hypot(
		mKeyboard.mMostCommonKeyWidth, mKeyboard.mMostCommonKeyHeight);
		final float lengthFromDownRatio =
		(float)mBogusMoveEventDetector.mAccumulatedDistanceFromDownKey
		/ mKeyboard.mMostCommonKeyWidth;
		mBogusMoveEventDetector.mAccumulatedDistanceFromDownKey / keyDiagonal;
		Log.d(TAG, String.format("[%d] isMajorEnoughMoveToBeOnNewKey:"
		+ " %.2f keyWidth from virtual down point",
		+ " %.2f key diagonal from virtual down point",
		mPointerId, lengthFromDownRatio));
		}
		return true;