Beginning implementation of quickscrub (1/3)
When enabled via launcher, the home button is able to be be pulled to
the right side to send events to launcher via binder calls of when the
quick scrub operation starts, ends and progress changes between each
interval. Launcher will use this information to determine how the
recents apps are laid out with vibration feedback.
When the home button is pulled and released under 150ms, quick switch
will occur. A binder call will tell launcher to switch to the previous
app used.
While quick scrub or switch is active, launcher will not get any nav
bar motion events, only events for quick scrub and switch.
Bug: 67957962
Bug: 70180755
Test: enable new experience via launcher settings
Change-Id: I344f5d67f259ff454205ea4d2e95140f783d3b5c
diff --git a/packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickScrubController.java b/packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickScrubController.java
new file mode 100644
index 0000000..9f8a7ef
--- /dev/null
+++ b/packages/SystemUI/src/com/android/systemui/statusbar/phone/QuickScrubController.java
@@ -0,0 +1,370 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License
+ */
+
+package com.android.systemui.statusbar.phone;
+
+import android.animation.Animator;
+import android.animation.AnimatorListenerAdapter;
+import android.animation.AnimatorSet;
+import android.animation.ObjectAnimator;
+import android.animation.ValueAnimator;
+import android.animation.ValueAnimator.AnimatorUpdateListener;
+import android.content.Context;
+import android.graphics.Canvas;
+import android.graphics.Paint;
+import android.graphics.Rect;
+import android.os.Handler;
+import android.os.RemoteException;
+import android.util.Log;
+import android.util.Slog;
+import android.view.Display;
+import android.view.GestureDetector;
+import android.view.MotionEvent;
+import android.view.View;
+import android.view.ViewConfiguration;
+import android.view.WindowManager;
+import android.view.WindowManagerGlobal;
+import android.view.animation.DecelerateInterpolator;
+import android.view.animation.Interpolator;
+import android.support.annotation.DimenRes;
+import com.android.systemui.Dependency;
+import com.android.systemui.OverviewProxyService;
+import com.android.systemui.R;
+import com.android.systemui.plugins.statusbar.phone.NavGesture.GestureHelper;
+import com.android.systemui.shared.recents.IOverviewProxy;
+import com.android.systemui.shared.recents.utilities.Utilities;
+
+import static android.view.WindowManagerPolicyConstants.NAV_BAR_LEFT;
+import static android.view.WindowManagerPolicyConstants.NAV_BAR_BOTTOM;
+
+/**
+ * Class to detect gestures on the navigation bar and implement quick scrub and switch.
+ */
+public class QuickScrubController extends GestureDetector.SimpleOnGestureListener implements
+ GestureHelper {
+
+ private static final String TAG = "QuickScrubController";
+ private static final int QUICK_SWITCH_FLING_VELOCITY = 0;
+ private static final int ANIM_DURATION_MS = 200;
+ private static final long LONG_PRESS_DELAY_MS = 150;
+
+ /**
+ * For quick step, set a damping value to allow the button to stick closer its origin position
+ * when dragging before quick scrub is active.
+ */
+ private static final int SWITCH_STICKINESS = 4;
+
+ private NavigationBarView mNavigationBarView;
+ private GestureDetector mGestureDetector;
+
+ private boolean mDraggingActive;
+ private boolean mQuickScrubActive;
+ private float mDownOffset;
+ private float mTranslation;
+ private int mTouchDownX;
+ private int mTouchDownY;
+ private boolean mDragPositive;
+ private boolean mIsVertical;
+ private boolean mIsRTL;
+ private float mMaxTrackPaintAlpha;
+
+ private final Handler mHandler = new Handler();
+ private final Interpolator mQuickScrubEndInterpolator = new DecelerateInterpolator();
+ private final Rect mTrackRect = new Rect();
+ private final Rect mHomeButtonRect = new Rect();
+ private final Paint mTrackPaint = new Paint();
+ private final int mScrollTouchSlop;
+ private final OverviewProxyService mOverviewEventSender;
+ private final Display mDisplay;
+ private final int mTrackThickness;
+ private final int mTrackPadding;
+ private final ValueAnimator mTrackAnimator;
+ private final ValueAnimator mButtonAnimator;
+ private final AnimatorSet mQuickScrubEndAnimator;
+ private final Context mContext;
+
+ private final AnimatorUpdateListener mTrackAnimatorListener = valueAnimator -> {
+ mTrackPaint.setAlpha(Math.round((float) valueAnimator.getAnimatedValue() * 255));
+ mNavigationBarView.invalidate();
+ };
+
+ private final AnimatorUpdateListener mButtonTranslationListener = animator -> {
+ int pos = (int) animator.getAnimatedValue();
+ if (!mQuickScrubActive) {
+ pos = mDragPositive ? Math.min((int) mTranslation, pos) : Math.max((int) mTranslation, pos);
+ }
+ final View homeView = mNavigationBarView.getHomeButton().getCurrentView();
+ if (mIsVertical) {
+ homeView.setTranslationY(pos);
+ } else {
+ homeView.setTranslationX(pos);
+ }
+ };
+
+ private AnimatorListenerAdapter mQuickScrubEndListener = new AnimatorListenerAdapter() {
+ @Override
+ public void onAnimationEnd(Animator animation) {
+ mNavigationBarView.getHomeButton().setClickable(true);
+ mQuickScrubActive = false;
+ mTranslation = 0;
+ }
+ };
+
+ private Runnable mLongPressRunnable = this::startQuickScrub;
+
+ private final GestureDetector.SimpleOnGestureListener mGestureListener =
+ new GestureDetector.SimpleOnGestureListener() {
+ @Override
+ public boolean onFling(MotionEvent e1, MotionEvent e2, float velX, float velY) {
+ if (mQuickScrubActive) {
+ return false;
+ }
+ float velocityX = mIsRTL ? -velX : velX;
+ float absVelY = Math.abs(velY);
+ final boolean isValidFling = velocityX > QUICK_SWITCH_FLING_VELOCITY &&
+ mIsVertical ? (absVelY > velocityX) : (velocityX > absVelY);
+ if (isValidFling) {
+ mDraggingActive = false;
+ mButtonAnimator.setIntValues((int) mTranslation, 0);
+ mButtonAnimator.start();
+ mHandler.removeCallbacks(mLongPressRunnable);
+ try {
+ final IOverviewProxy overviewProxy = mOverviewEventSender.getProxy();
+ overviewProxy.onQuickSwitch();
+ } catch (RemoteException e) {
+ Log.e(TAG, "Failed to send start of quick switch.", e);
+ }
+ }
+ return true;
+ }
+ };
+
+ public QuickScrubController(Context context) {
+ mContext = context;
+ mScrollTouchSlop = ViewConfiguration.get(context).getScaledTouchSlop();
+ mDisplay = ((WindowManager) context.getSystemService(
+ Context.WINDOW_SERVICE)).getDefaultDisplay();
+ mOverviewEventSender = Dependency.get(OverviewProxyService.class);
+ mGestureDetector = new GestureDetector(mContext, mGestureListener);
+ mTrackThickness = getDimensionPixelSize(mContext, R.dimen.nav_quick_scrub_track_thickness);
+ mTrackPadding = getDimensionPixelSize(mContext, R.dimen.nav_quick_scrub_track_edge_padding);
+
+ mTrackAnimator = ObjectAnimator.ofFloat();
+ mTrackAnimator.addUpdateListener(mTrackAnimatorListener);
+ mButtonAnimator = ObjectAnimator.ofInt();
+ mButtonAnimator.addUpdateListener(mButtonTranslationListener);
+ mQuickScrubEndAnimator = new AnimatorSet();
+ mQuickScrubEndAnimator.playTogether(mTrackAnimator, mButtonAnimator);
+ mQuickScrubEndAnimator.setDuration(ANIM_DURATION_MS);
+ mQuickScrubEndAnimator.addListener(mQuickScrubEndListener);
+ mQuickScrubEndAnimator.setInterpolator(mQuickScrubEndInterpolator);
+ }
+
+ public void setComponents(NavigationBarView navigationBarView) {
+ mNavigationBarView = navigationBarView;
+ }
+
+ @Override
+ public boolean onInterceptTouchEvent(MotionEvent event) {
+ final IOverviewProxy overviewProxy = mOverviewEventSender.getProxy();
+ final ButtonDispatcher homeButton = mNavigationBarView.getHomeButton();
+ if (overviewProxy == null) {
+ homeButton.setDelayTouchFeedback(false);
+ return false;
+ }
+ mGestureDetector.onTouchEvent(event);
+ int action = event.getAction();
+ switch (action & MotionEvent.ACTION_MASK) {
+ case MotionEvent.ACTION_DOWN: {
+ int x = (int) event.getX();
+ int y = (int) event.getY();
+ if (mHomeButtonRect.contains(x, y)) {
+ mTouchDownX = x;
+ mTouchDownY = y;
+ homeButton.setDelayTouchFeedback(true);
+ mHandler.postDelayed(mLongPressRunnable, LONG_PRESS_DELAY_MS);
+ } else {
+ mTouchDownX = mTouchDownY = -1;
+ }
+ break;
+ }
+ case MotionEvent.ACTION_MOVE: {
+ if (mTouchDownX != -1) {
+ int x = (int) event.getX();
+ int y = (int) event.getY();
+ int xDiff = Math.abs(x - mTouchDownX);
+ int yDiff = Math.abs(y - mTouchDownY);
+ boolean exceededTouchSlop;
+ int pos, touchDown, offset, trackSize;
+ if (mIsVertical) {
+ exceededTouchSlop = yDiff > mScrollTouchSlop && yDiff > xDiff;
+ pos = y;
+ touchDown = mTouchDownY;
+ offset = pos - mTrackRect.top;
+ trackSize = mTrackRect.height();
+ } else {
+ exceededTouchSlop = xDiff > mScrollTouchSlop && xDiff > yDiff;
+ pos = x;
+ touchDown = mTouchDownX;
+ offset = pos - mTrackRect.left;
+ trackSize = mTrackRect.width();
+ }
+ if (!mDragPositive) {
+ offset -= mIsVertical ? mTrackRect.height() : mTrackRect.width();
+ }
+
+ // Control the button movement
+ if (!mDraggingActive && exceededTouchSlop) {
+ boolean allowDrag = !mDragPositive
+ ? offset < 0 && pos < touchDown : offset >= 0 && pos > touchDown;
+ if (allowDrag) {
+ mDownOffset = offset;
+ homeButton.setClickable(false);
+ mDraggingActive = true;
+ }
+ }
+ if (mDraggingActive && (mDragPositive && offset >= 0
+ || !mDragPositive && offset <= 0)) {
+ float scrubFraction =
+ Utilities.clamp(Math.abs(offset) * 1f / trackSize, 0, 1);
+ mTranslation = !mDragPositive
+ ? Utilities.clamp(offset - mDownOffset, -trackSize, 0)
+ : Utilities.clamp(offset - mDownOffset, 0, trackSize);
+ if (mQuickScrubActive) {
+ try {
+ overviewProxy.onQuickScrubProgress(scrubFraction);
+ } catch (RemoteException e) {
+ Log.e(TAG, "Failed to send progress of quick scrub.", e);
+ }
+ } else {
+ mTranslation /= SWITCH_STICKINESS;
+ }
+ if (mIsVertical) {
+ homeButton.getCurrentView().setTranslationY(mTranslation);
+ } else {
+ homeButton.getCurrentView().setTranslationX(mTranslation);
+ }
+ }
+ }
+ break;
+ }
+ case MotionEvent.ACTION_CANCEL:
+ case MotionEvent.ACTION_UP:
+ endQuickScrub();
+ break;
+ }
+ return mDraggingActive || mQuickScrubActive;
+ }
+
+ @Override
+ public void onDraw(Canvas canvas) {
+ canvas.drawRect(mTrackRect, mTrackPaint);
+ }
+
+ @Override
+ public void onLayout(boolean changed, int left, int top, int right, int bottom) {
+ final int width = right - left;
+ final int height = bottom - top;
+ final int x1, x2, y1, y2;
+ if (mIsVertical) {
+ x1 = (width - mTrackThickness) / 2;
+ x2 = x1 + mTrackThickness;
+ y1 = mDragPositive ? height / 2 : mTrackPadding;
+ y2 = y1 + height / 2 - mTrackPadding;
+ } else {
+ y1 = (height - mTrackThickness) / 2;
+ y2 = y1 + mTrackThickness;
+ x1 = mDragPositive ? width / 2 : mTrackPadding;
+ x2 = x1 + width / 2 - mTrackPadding;
+ }
+ mTrackRect.set(x1, y1, x2, y2);
+
+ // Get the touch rect of the home button location
+ View homeView = mNavigationBarView.getHomeButton().getCurrentView();
+ int[] globalHomePos = homeView.getLocationOnScreen();
+ int[] globalNavBarPos = mNavigationBarView.getLocationOnScreen();
+ int homeX = globalHomePos[0] - globalNavBarPos[0];
+ int homeY = globalHomePos[1] - globalNavBarPos[1];
+ mHomeButtonRect.set(homeX, homeY, homeX + homeView.getMeasuredWidth(),
+ homeY + homeView.getMeasuredHeight());
+ }
+
+ @Override
+ public void onDarkIntensityChange(float intensity) {
+ if (intensity == 0) {
+ mTrackPaint.setColor(mContext.getColor(R.color.quick_step_track_background_light));
+ } else if (intensity == 1) {
+ mTrackPaint.setColor(mContext.getColor(R.color.quick_step_track_background_dark));
+ }
+ mMaxTrackPaintAlpha = mTrackPaint.getAlpha() * 1f / 255;
+ mTrackPaint.setAlpha(0);
+ }
+
+ @Override
+ public boolean onTouchEvent(MotionEvent event) {
+ if (event.getAction() == MotionEvent.ACTION_UP) {
+ endQuickScrub();
+ }
+ return false;
+ }
+
+ @Override
+ public void setBarState(boolean isVertical, boolean isRTL) {
+ mIsVertical = isVertical;
+ mIsRTL = isRTL;
+ try {
+ int navbarPos = WindowManagerGlobal.getWindowManagerService().getNavBarPosition();
+ mDragPositive = navbarPos == NAV_BAR_LEFT || navbarPos == NAV_BAR_BOTTOM;
+ if (isRTL) {
+ mDragPositive = !mDragPositive;
+ }
+ } catch (RemoteException e) {
+ Slog.e(TAG, "Failed to get nav bar position.", e);
+ }
+ }
+
+ private void startQuickScrub() {
+ if (!mQuickScrubActive) {
+ mQuickScrubActive = true;
+ mTrackAnimator.setFloatValues(0, mMaxTrackPaintAlpha);
+ mTrackAnimator.start();
+ try {
+ mOverviewEventSender.getProxy().onQuickScrubStart();
+ } catch (RemoteException e) {
+ Log.e(TAG, "Failed to send start of quick scrub.", e);
+ }
+ }
+ }
+
+ private void endQuickScrub() {
+ mHandler.removeCallbacks(mLongPressRunnable);
+ if (mDraggingActive || mQuickScrubActive) {
+ mButtonAnimator.setIntValues((int) mTranslation, 0);
+ mTrackAnimator.setFloatValues(mTrackPaint.getAlpha() * 1f / 255, 0);
+ mQuickScrubEndAnimator.start();
+ try {
+ mOverviewEventSender.getProxy().onQuickScrubEnd();
+ } catch (RemoteException e) {
+ Log.e(TAG, "Failed to send end of quick scrub.", e);
+ }
+ }
+ mDraggingActive = false;
+ }
+
+ private int getDimensionPixelSize(Context context, @DimenRes int resId) {
+ return context.getResources().getDimensionPixelSize(resId);
+ }
+}