am 07d1e212: Use finger velocity for ExpandHelper (00c9cb09) · Commits · e / os / android_frameworks_base

packages/SystemUI/src/com/android/systemui/ExpandHelper.java

+52 −6

Original line number	Diff line number	Diff line
		@@ -29,11 +29,13 @@ import android.view.Gravity;
		import android.view.MotionEvent;
		import android.view.ScaleGestureDetector;
		import android.view.ScaleGestureDetector.OnScaleGestureListener;
		import android.view.VelocityTracker;
		import android.view.View;
		import android.view.ViewConfiguration;

		import com.android.systemui.statusbar.ExpandableNotificationRow;
		import com.android.systemui.statusbar.ExpandableView;
		import com.android.systemui.statusbar.FlingAnimationUtils;
		import com.android.systemui.statusbar.policy.ScrollAdapter;

		public class ExpandHelper implements Gefingerpoken {
		@@ -49,7 +51,7 @@ public class ExpandHelper implements Gefingerpoken {
		private static final String TAG = "ExpandHelper";
		protected static final boolean DEBUG = false;
		protected static final boolean DEBUG_SCALE = false;
		private static final long EXPAND_DURATION = 250;
		private static final float EXPAND_DURATION = 0.3f;

		// Set to false to disable focus-based gestures (spread-finger vertical pull).
		private static final boolean USE_DRAG = true;
		@@ -112,6 +114,8 @@ public class ExpandHelper implements Gefingerpoken {
		private int mGravity;

		private ScrollAdapter mScrollAdapter;
		private FlingAnimationUtils mFlingAnimationUtils;
		private VelocityTracker mVelocityTracker;

		private OnScaleGestureListener mScaleGestureListener
		= new ScaleGestureDetector.SimpleOnScaleGestureListener() {
		@@ -171,7 +175,6 @@ public class ExpandHelper implements Gefingerpoken {
		mScaler = new ViewScaler();
		mGravity = Gravity.TOP;
		mScaleAnimation = ObjectAnimator.ofFloat(mScaler, "height", 0f);
		mScaleAnimation.setDuration(EXPAND_DURATION);
		mPopDuration = mContext.getResources().getInteger(R.integer.blinds_pop_duration_ms);
		mPullGestureMinXSpan = mContext.getResources().getDimension(R.dimen.pull_span_min);

		@@ -179,6 +182,7 @@ public class ExpandHelper implements Gefingerpoken {
		mTouchSlop = configuration.getScaledTouchSlop();

		mSGD = new ScaleGestureDetector(context, mScaleGestureListener);
		mFlingAnimationUtils = new FlingAnimationUtils(context, EXPAND_DURATION);
		}

		private void updateExpansion() {
		@@ -260,6 +264,7 @@ public class ExpandHelper implements Gefingerpoken {
		if (!isEnabled()) {
		return false;
		}
		trackVelocity(ev);
		final int action = ev.getAction();
		if (DEBUG_SCALE) Log.d(TAG, "intercept: act=" + MotionEvent.actionToString(action) +
		" expanding=" + mExpanding +
		@@ -279,6 +284,7 @@ public class ExpandHelper implements Gefingerpoken {

		if (mExpanding) {
		mLastMotionY = ev.getRawY();
		maybeRecycleVelocityTracker(ev);
		return true;
		} else {
		if ((action == MotionEvent.ACTION_MOVE) && 0 != (mExpansionStyle & BLINDS)) {
		@@ -323,15 +329,52 @@ public class ExpandHelper implements Gefingerpoken {
		case MotionEvent.ACTION_CANCEL:
		case MotionEvent.ACTION_UP:
		if (DEBUG) Log.d(TAG, "up/cancel");
		finishExpanding(false);
		finishExpanding(false, getCurrentVelocity());
		clearView();
		break;
		}
		mLastMotionY = ev.getRawY();
		maybeRecycleVelocityTracker(ev);
		return mExpanding;
		}
		}

		private void trackVelocity(MotionEvent event) {
		int action = event.getActionMasked();
		switch(action) {
		case MotionEvent.ACTION_DOWN:
		if (mVelocityTracker == null) {
		mVelocityTracker = VelocityTracker.obtain();
		} else {
		mVelocityTracker.clear();
		}
		mVelocityTracker.addMovement(event);
		break;
		case MotionEvent.ACTION_MOVE:
		mVelocityTracker.addMovement(event);
		break;
		default:
		break;
		}
		}

		private void maybeRecycleVelocityTracker(MotionEvent event) {
		if (event.getActionMasked() == MotionEvent.ACTION_CANCEL
		\|\| event.getActionMasked() == MotionEvent.ACTION_UP) {
		mVelocityTracker.recycle();
		mVelocityTracker = null;
		}
		}

		private float getCurrentVelocity() {
		if (mVelocityTracker != null) {
		mVelocityTracker.computeCurrentVelocity(1000);
		return mVelocityTracker.getYVelocity();
		} else {
		return 0f;
		}
		}

		public void setEnabled(boolean enable) {
		mEnabled = enable;
		}
		@@ -349,6 +392,7 @@ public class ExpandHelper implements Gefingerpoken {
		if (!isEnabled()) {
		return false;
		}
		trackVelocity(ev);
		final int action = ev.getActionMasked();
		if (DEBUG_SCALE) Log.d(TAG, "touch: act=" + MotionEvent.actionToString(action) +
		" expanding=" + mExpanding +
		@@ -438,11 +482,12 @@ public class ExpandHelper implements Gefingerpoken {
		case MotionEvent.ACTION_UP:
		case MotionEvent.ACTION_CANCEL:
		if (DEBUG) Log.d(TAG, "up/cancel");
		finishExpanding(false);
		finishExpanding(false, getCurrentVelocity());
		clearView();
		break;
		}
		mLastMotionY = ev.getRawY();
		maybeRecycleVelocityTracker(ev);
		return mResizedView != null;
		}

		@@ -476,7 +521,7 @@ public class ExpandHelper implements Gefingerpoken {
		return true;
		}

		private void finishExpanding(boolean force) {
		private void finishExpanding(boolean force, float velocity) {
		if (!mExpanding) return;

		if (DEBUG) Log.d(TAG, "scale in finishing on view: " + mResizedView);
		@@ -506,6 +551,7 @@ public class ExpandHelper implements Gefingerpoken {
		mScaleAnimation.removeListener(this);
		}
		});
		mFlingAnimationUtils.apply(mScaleAnimation, currentHeight, targetHeight, velocity);
		mScaleAnimation.start();
		} else {
		mCallback.setUserLockedChild(mResizedView, false);
		@@ -529,7 +575,7 @@ public class ExpandHelper implements Gefingerpoken {
		* Use this to abort any pending expansions in progress.
		*/
		public void cancel() {
		finishExpanding(true);
		finishExpanding(true, 0f /* velocity */);
		clearView();

		// reset the gesture detector