am 0944d625: Merge "Touch explorer and magnifier do not work well together." into jb-mr1-dev (cc723173) · Commits · e / os / android_frameworks_base

services/java/com/android/server/accessibility/AccessibilityInputFilter.java

+7 −4

Original line number	Diff line number	Diff line
		@@ -119,13 +119,16 @@ class AccessibilityInputFilter extends InputFilter implements EventStreamTransfo
		mCurrentDeviceId = deviceId;
		}
		mPm.userActivity(event.getEventTime(), false);
		MotionEvent motionEvent = (MotionEvent) event;
		mEventHandler.onMotionEvent(motionEvent, policyFlags);
		MotionEvent rawEvent = (MotionEvent) event;
		MotionEvent transformedEvent = MotionEvent.obtain(rawEvent);
		mEventHandler.onMotionEvent(transformedEvent, rawEvent, policyFlags);
		transformedEvent.recycle();
		}

		@Override
		public void onMotionEvent(MotionEvent event, int policyFlags) {
		sendInputEvent(event, policyFlags);
		public void onMotionEvent(MotionEvent transformedEvent, MotionEvent rawEvent,
		int policyFlags) {
		sendInputEvent(transformedEvent, policyFlags);
		}

		@Override

services/java/com/android/server/accessibility/EventStreamTransformation.java

+6 −3

Original line number	Diff line number	Diff line
		@@ -57,12 +57,15 @@ import android.view.accessibility.AccessibilityEvent;
		interface EventStreamTransformation {

		/**
		* Receives a motion event.
		* Receives motion event. Passed are the event transformed by previous
		* transformations and the raw event to which no transformations have
		* been applied.
		*
		* @param event The motion event.
		* @param event The transformed motion event.
		* @param rawEvent The raw motion event.
		* @param policyFlags Policy flags for the event.
		*/
		public void onMotionEvent(MotionEvent event, int policyFlags);
		public void onMotionEvent(MotionEvent event, MotionEvent rawEvent, int policyFlags);

		/**
		* Receives an accessibility event.

services/java/com/android/server/accessibility/ScreenMagnifier.java

+24 −13

Original line number	Diff line number	Diff line
		@@ -203,14 +203,15 @@ public final class ScreenMagnifier implements EventStreamTransformation {
		}

		@Override
		public void onMotionEvent(MotionEvent event, int policyFlags) {
		public void onMotionEvent(MotionEvent event, MotionEvent rawEvent,
		int policyFlags) {
		mMagnifiedContentInteractonStateHandler.onMotionEvent(event);
		switch (mCurrentState) {
		case STATE_DELEGATING: {
		handleMotionEventStateDelegating(event, policyFlags);
		handleMotionEventStateDelegating(event, rawEvent, policyFlags);
		} break;
		case STATE_DETECTING: {
		mDetectingStateHandler.onMotionEvent(event, policyFlags);
		mDetectingStateHandler.onMotionEvent(event, rawEvent, policyFlags);
		} break;
		case STATE_VIEWPORT_DRAGGING: {
		mStateViewportDraggingHandler.onMotionEvent(event, policyFlags);
		@@ -259,7 +260,8 @@ public final class ScreenMagnifier implements EventStreamTransformation {
		mScreenStateObserver.destroy();
		}

		private void handleMotionEventStateDelegating(MotionEvent event, int policyFlags) {
		private void handleMotionEventStateDelegating(MotionEvent event,
		MotionEvent rawEvent, int policyFlags) {
		if (event.getActionMasked() == MotionEvent.ACTION_UP) {
		if (mDetectingStateHandler.mDelayedEventQueue == null) {
		transitionToState(STATE_DETECTING);
		@@ -290,7 +292,7 @@ public final class ScreenMagnifier implements EventStreamTransformation {
		coords, 0, 0, 1.0f, 1.0f, event.getDeviceId(), 0, event.getSource(),
		event.getFlags());
		}
		mNext.onMotionEvent(event, policyFlags);
		mNext.onMotionEvent(event, rawEvent, policyFlags);
		}
		}

		@@ -533,8 +535,8 @@ public final class ScreenMagnifier implements EventStreamTransformation {
		}
		};

		public void onMotionEvent(MotionEvent event, int policyFlags) {
		cacheDelayedMotionEvent(event, policyFlags);
		public void onMotionEvent(MotionEvent event, MotionEvent rawEvent, int policyFlags) {
		cacheDelayedMotionEvent(event, rawEvent, policyFlags);
		final int action = event.getActionMasked();
		switch (action) {
		case MotionEvent.ACTION_DOWN: {
		@@ -640,8 +642,10 @@ public final class ScreenMagnifier implements EventStreamTransformation {
		}
		}

		private void cacheDelayedMotionEvent(MotionEvent event, int policyFlags) {
		MotionEventInfo info = MotionEventInfo.obtain(event, policyFlags);
		private void cacheDelayedMotionEvent(MotionEvent event, MotionEvent rawEvent,
		int policyFlags) {
		MotionEventInfo info = MotionEventInfo.obtain(event, rawEvent,
		policyFlags);
		if (mDelayedEventQueue == null) {
		mDelayedEventQueue = info;
		} else {
		@@ -657,7 +661,8 @@ public final class ScreenMagnifier implements EventStreamTransformation {
		while (mDelayedEventQueue != null) {
		MotionEventInfo info = mDelayedEventQueue;
		mDelayedEventQueue = info.mNext;
		ScreenMagnifier.this.onMotionEvent(info.mEvent, info.mPolicyFlags);
		ScreenMagnifier.this.onMotionEvent(info.mEvent, info.mRawEvent,
		info.mPolicyFlags);
		info.recycle();
		}
		}
		@@ -738,9 +743,11 @@ public final class ScreenMagnifier implements EventStreamTransformation {
		private boolean mInPool;

		public MotionEvent mEvent;
		public MotionEvent mRawEvent;
		public int mPolicyFlags;

		public static MotionEventInfo obtain(MotionEvent event, int policyFlags) {
		public static MotionEventInfo obtain(MotionEvent event, MotionEvent rawEvent,
		int policyFlags) {
		synchronized (sLock) {
		MotionEventInfo info;
		if (sPoolSize > 0) {
		@@ -752,13 +759,15 @@ public final class ScreenMagnifier implements EventStreamTransformation {
		} else {
		info = new MotionEventInfo();
		}
		info.initialize(event, policyFlags);
		info.initialize(event, rawEvent, policyFlags);
		return info;
		}
		}

		private void initialize(MotionEvent event, int policyFlags) {
		private void initialize(MotionEvent event, MotionEvent rawEvent,
		int policyFlags) {
		mEvent = MotionEvent.obtain(event);
		mRawEvent = MotionEvent.obtain(rawEvent);
		mPolicyFlags = policyFlags;
		}

		@@ -780,6 +789,8 @@ public final class ScreenMagnifier implements EventStreamTransformation {
		private void clear() {
		mEvent.recycle();
		mEvent = null;
		mRawEvent.recycle();
		mRawEvent = null;
		mPolicyFlags = 0;
		}
		}

services/java/com/android/server/accessibility/TouchExplorer.java

+27 −22

Original line number	Diff line number	Diff line
		@@ -162,7 +162,7 @@ class TouchExplorer implements EventStreamTransformation {
		private EventStreamTransformation mNext;

		// Helper to track gesture velocity.
		private VelocityTracker mVelocityTracker;
		private final VelocityTracker mVelocityTracker = VelocityTracker.obtain();

		// Helper class to track received pointers.
		private final ReceivedPointerTracker mReceivedPointerTracker;
		@@ -309,18 +309,18 @@ class TouchExplorer implements EventStreamTransformation {
		}

		@Override
		public void onMotionEvent(MotionEvent event, int policyFlags) {
		public void onMotionEvent(MotionEvent event, MotionEvent rawEvent, int policyFlags) {
		if (DEBUG) {
		Slog.d(LOG_TAG, "Received event: " + event + ", policyFlags=0x"
		+ Integer.toHexString(policyFlags));
		Slog.d(LOG_TAG, getStateSymbolicName(mCurrentState));
		}

		mReceivedPointerTracker.onMotionEvent(event);
		mReceivedPointerTracker.onMotionEvent(rawEvent);

		switch(mCurrentState) {
		case STATE_TOUCH_EXPLORING: {
		handleMotionEventStateTouchExploring(event, policyFlags);
		handleMotionEventStateTouchExploring(event, rawEvent, policyFlags);
		} break;
		case STATE_DRAGGING: {
		handleMotionEventStateDragging(event, policyFlags);
		@@ -329,7 +329,7 @@ class TouchExplorer implements EventStreamTransformation {
		handleMotionEventStateDelegating(event, policyFlags);
		} break;
		case STATE_GESTURE_DETECTING: {
		handleMotionEventGestureDetecting(event, policyFlags);
		handleMotionEventGestureDetecting(rawEvent, policyFlags);
		} break;
		default:
		throw new IllegalStateException("Illegal state: " + mCurrentState);
		@@ -382,16 +382,15 @@ class TouchExplorer implements EventStreamTransformation {
		* Handles a motion event in touch exploring state.
		*
		* @param event The event to be handled.
		* @param rawEvent The raw (unmodified) motion event.
		* @param policyFlags The policy flags associated with the event.
		*/
		private void handleMotionEventStateTouchExploring(MotionEvent event, int policyFlags) {
		private void handleMotionEventStateTouchExploring(MotionEvent event, MotionEvent rawEvent,
		int policyFlags) {
		ReceivedPointerTracker receivedTracker = mReceivedPointerTracker;
		final int activePointerCount = receivedTracker.getActivePointerCount();

		if (mVelocityTracker == null) {
		mVelocityTracker = VelocityTracker.obtain();
		}
		mVelocityTracker.addMovement(event);
		mVelocityTracker.addMovement(rawEvent);

		mDoubleTapDetector.onMotionEvent(event, policyFlags);

		@@ -410,7 +409,7 @@ class TouchExplorer implements EventStreamTransformation {
		// have a distance slop before getting into gesture detection
		// mode and not using the points within this slop significantly
		// decreases the quality of gesture recognition.
		handleMotionEventGestureDetecting(event, policyFlags);
		handleMotionEventGestureDetecting(rawEvent, policyFlags);
		//$FALL-THROUGH$
		case MotionEvent.ACTION_POINTER_DOWN: {
		switch (activePointerCount) {
		@@ -471,12 +470,13 @@ class TouchExplorer implements EventStreamTransformation {
		// have a distance slop before getting into gesture detection
		// mode and not using the points within this slop significantly
		// decreases the quality of gesture recognition.
		handleMotionEventGestureDetecting(event, policyFlags);

		handleMotionEventGestureDetecting(rawEvent, policyFlags);
		// It is important to use the distance traveled by the pointers
		// on the screen which may or may not be magnified.
		final float deltaX = receivedTracker.getReceivedPointerDownX(pointerId)
		- event.getX(pointerIndex);
		- rawEvent.getX(pointerIndex);
		final float deltaY = receivedTracker.getReceivedPointerDownY(pointerId)
		- event.getY(pointerIndex);
		- rawEvent.getY(pointerIndex);
		final double moveDelta = Math.hypot(deltaX, deltaY);
		// The user has moved enough for us to decide.
		if (moveDelta > mDoubleTapSlop) {
		@@ -491,6 +491,7 @@ class TouchExplorer implements EventStreamTransformation {
		// We have to perform gesture detection, so
		// clear the current state and try to detect.
		mCurrentState = STATE_GESTURE_DETECTING;
		mVelocityTracker.clear();
		mSendHoverEnterDelayed.remove();
		mSendHoverExitDelayed.remove();
		mPerformLongPressDelayed.remove();
		@@ -535,10 +536,12 @@ class TouchExplorer implements EventStreamTransformation {
		// If the user is touch exploring the second pointer may be
		// performing a double tap to activate an item without need
		// for the user to lift his exploring finger.
		// It is important to use the distance traveled by the pointers
		// on the screen which may or may not be magnified.
		final float deltaX = receivedTracker.getReceivedPointerDownX(pointerId)
		- event.getX(pointerIndex);
		- rawEvent.getX(pointerIndex);
		final float deltaY = receivedTracker.getReceivedPointerDownY(pointerId)
		- event.getY(pointerIndex);
		- rawEvent.getY(pointerIndex);
		final double moveDelta = Math.hypot(deltaX, deltaY);
		if (moveDelta < mDoubleTapSlop) {
		break;
		@@ -565,6 +568,7 @@ class TouchExplorer implements EventStreamTransformation {
		mCurrentState = STATE_DELEGATING;
		sendDownForAllActiveNotInjectedPointers(event, policyFlags);
		}
		mVelocityTracker.clear();
		} break;
		default: {
		// More than one pointer so the user is not touch exploring
		@@ -585,6 +589,7 @@ class TouchExplorer implements EventStreamTransformation {
		// More than two pointers are delegated to the view hierarchy.
		mCurrentState = STATE_DELEGATING;
		sendDownForAllActiveNotInjectedPointers(event, policyFlags);
		mVelocityTracker.clear();
		}
		}
		} break;
		@@ -615,10 +620,7 @@ class TouchExplorer implements EventStreamTransformation {
		}
		} break;
		}
		if (mVelocityTracker != null) {
		mVelocityTracker.clear();
		mVelocityTracker = null;
		}
		} break;
		case MotionEvent.ACTION_CANCEL: {
		clear(event, policyFlags);
		@@ -1046,7 +1048,10 @@ class TouchExplorer implements EventStreamTransformation {
		// Make sure that the user will see the event.
		policyFlags \|= WindowManagerPolicy.FLAG_PASS_TO_USER;
		if (mNext != null) {
		mNext.onMotionEvent(event, policyFlags);
		// TODO: For now pass null for the raw event since the touch
		// explorer is the last event transformation and it does
		// not care about the raw event.
		mNext.onMotionEvent(event, null, policyFlags);
		}

		mInjectedPointerTracker.onMotionEvent(event);