Support predictive back from all apps to home (e884c2c7) · Commits · e / os / BlissLauncher3

quickstep/src/com/android/launcher3/uioverrides/QuickstepLauncher.java

+29 −0

Original line number	Diff line number	Diff line
		@@ -69,9 +69,13 @@ import android.view.HapticFeedbackConstants;
		import android.view.RemoteAnimationTarget;
		import android.view.View;
		import android.view.WindowManagerGlobal;
		import android.window.BackEvent;
		import android.window.OnBackAnimationCallback;
		import android.window.OnBackInvokedDispatcher;
		import android.window.SplashScreen;

		import androidx.annotation.BinderThread;
		import androidx.annotation.NonNull;
		import androidx.annotation.Nullable;

		import com.android.app.viewcapture.ViewCapture;
		@@ -105,6 +109,8 @@ import com.android.launcher3.statemanager.StateManager.AtomicAnimationFactory;
		import com.android.launcher3.statemanager.StateManager.StateHandler;
		import com.android.launcher3.taskbar.LauncherTaskbarUIController;
		import com.android.launcher3.taskbar.TaskbarManager;
		import com.android.launcher3.testing.TestLogging;
		import com.android.launcher3.testing.shared.TestProtocol;
		import com.android.launcher3.uioverrides.QuickstepWidgetHolder.QuickstepHolderFactory;
		import com.android.launcher3.uioverrides.states.QuickstepAtomicAnimationFactory;
		import com.android.launcher3.uioverrides.touchcontrollers.NavBarToHomeTouchController;
		@@ -623,6 +629,29 @@ public class QuickstepLauncher extends Launcher {
		}
		}

		@Override
		protected void registerBackDispatcher() {
		getOnBackInvokedDispatcher().registerOnBackInvokedCallback(
		OnBackInvokedDispatcher.PRIORITY_DEFAULT,
		new OnBackAnimationCallback() {
		@Override
		public void onBackInvoked() {
		onBackPressed();
		TestLogging.recordEvent(TestProtocol.SEQUENCE_MAIN, "onBackInvoked");
		}

		@Override
		public void onBackProgressed(@NonNull BackEvent backEvent) {
		QuickstepLauncher.this.onBackProgressed(backEvent.getProgress());
		}

		@Override
		public void onBackCancelled() {
		QuickstepLauncher.this.onBackCancelled();
		}
		});
		}

		private void onTaskbarInAppDisplayProgressUpdate(float progress, int flag) {
		if (mTaskbarManager == null
		\|\| mTaskbarManager.getCurrentActivityContext() == null

src/com/android/launcher3/BaseActivity.java

+12 −8

Original line number	Diff line number	Diff line
		@@ -176,14 +176,7 @@ public abstract class BaseActivity extends Activity implements ActivityContext {
		@Override
		protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		if (Utilities.ATLEAST_T) {
		getOnBackInvokedDispatcher().registerOnBackInvokedCallback(
		OnBackInvokedDispatcher.PRIORITY_DEFAULT,
		() -> {
		onBackPressed();
		TestLogging.recordEvent(TestProtocol.SEQUENCE_MAIN, "onBackInvoked");
		});
		}
		registerBackDispatcher();
		}

		@Override
		@@ -246,6 +239,17 @@ public abstract class BaseActivity extends Activity implements ActivityContext {

		}

		protected void registerBackDispatcher() {
		if (Utilities.ATLEAST_T) {
		getOnBackInvokedDispatcher().registerOnBackInvokedCallback(
		OnBackInvokedDispatcher.PRIORITY_DEFAULT,
		() -> {
		onBackPressed();
		TestLogging.recordEvent(TestProtocol.SEQUENCE_MAIN, "onBackInvoked");
		});
		}
		}

		public boolean isStarted() {
		return (mActivityFlags & ACTIVITY_STATE_STARTED) != 0;
		}

src/com/android/launcher3/Launcher.java

+9 −0

Original line number	Diff line number	Diff line
		@@ -120,6 +120,7 @@ import android.widget.ImageView;
		import android.widget.Toast;

		import androidx.annotation.CallSuper;
		import androidx.annotation.FloatRange;
		import androidx.annotation.NonNull;
		import androidx.annotation.Nullable;
		import androidx.annotation.StringRes;
		@@ -2065,6 +2066,14 @@ public class Launcher extends StatefulActivity<LauncherState>
		mStateManager.getState().onBackPressed(this);
		}

		protected void onBackProgressed(@FloatRange(from = 0.0, to = 1.0) float backProgress) {
		mStateManager.getState().onBackProgressed(this, backProgress);
		}

		protected void onBackCancelled() {
		mStateManager.getState().onBackCancelled(this);
		}

		protected void onScreenOff() {
		// Reset AllApps to its initial state only if we are not in the middle of
		// processing a multi-step drop

src/com/android/launcher3/LauncherState.java

+23 −0

Original line number	Diff line number	Diff line
		@@ -34,6 +34,8 @@ import android.content.Context;
		import android.graphics.Color;
		import android.view.animation.Interpolator;

		import androidx.annotation.FloatRange;

		import com.android.launcher3.statemanager.BaseState;
		import com.android.launcher3.statemanager.StateManager;
		import com.android.launcher3.states.HintState;
		@@ -342,6 +344,27 @@ public abstract class LauncherState implements BaseState<LauncherState> {
		}
		}

		/**
		* Find {@link StateManager} and target {@link LauncherState} to handle back progress in
		* predictive back gesture.
		*/
		public void onBackProgressed(
		Launcher launcher, @FloatRange(from = 0.0, to = 1.0) float backProgress) {
		StateManager<LauncherState> lsm = launcher.getStateManager();
		LauncherState toState = lsm.getLastState();
		lsm.onBackProgressed(toState, backProgress);
		}

		/**
		* Find {@link StateManager} and target {@link LauncherState} to handle backProgress in
		* predictive back gesture.
		*/
		public void onBackCancelled(Launcher launcher) {
		StateManager<LauncherState> lsm = launcher.getStateManager();
		LauncherState toState = lsm.getLastState();
		lsm.onBackCancelled(toState);
		}

		public static abstract class PageAlphaProvider {

		public final Interpolator interpolator;

src/com/android/launcher3/allapps/AllAppsTransitionController.java

+56 −0

Original line number	Diff line number	Diff line
		@@ -15,6 +15,7 @@
		*/
		package com.android.launcher3.allapps;

		import static com.android.launcher3.LauncherAnimUtils.SCALE_PROPERTY;
		import static com.android.launcher3.LauncherAnimUtils.VIEW_TRANSLATE_Y;
		import static com.android.launcher3.LauncherState.ALL_APPS;
		import static com.android.launcher3.LauncherState.ALL_APPS_CONTENT;
		@@ -33,11 +34,15 @@ import android.view.HapticFeedbackConstants;
		import android.view.View;
		import android.view.animation.Interpolator;

		import androidx.annotation.FloatRange;

		import com.android.launcher3.DeviceProfile;
		import com.android.launcher3.DeviceProfile.OnDeviceProfileChangeListener;
		import com.android.launcher3.Launcher;
		import com.android.launcher3.LauncherState;
		import com.android.launcher3.anim.AnimatedFloat;
		import com.android.launcher3.anim.AnimatorListeners;
		import com.android.launcher3.anim.Interpolators;
		import com.android.launcher3.anim.PendingAnimation;
		import com.android.launcher3.anim.PropertySetter;
		import com.android.launcher3.statemanager.StateManager.StateHandler;
		@@ -61,6 +66,8 @@ public class AllAppsTransitionController
		implements StateHandler<LauncherState>, OnDeviceProfileChangeListener {
		// This constant should match the second derivative of the animator interpolator.
		public static final float INTERP_COEFF = 1.7f;
		private static final float SWIPE_ALL_APPS_TO_HOME_MIN_SCALE = 0.9f;
		private static final int REVERT_SWIPE_ALL_APPS_TO_HOME_ANIMATION_DURATION_MS = 200;

		public static final FloatProperty<AllAppsTransitionController> ALL_APPS_PROGRESS =
		new FloatProperty<AllAppsTransitionController>("allAppsProgress") {
		@@ -139,6 +146,7 @@ public class AllAppsTransitionController
		private ActivityAllAppsContainerView<Launcher> mAppsView;

		private final Launcher mLauncher;
		private final AnimatedFloat mAllAppScale = new AnimatedFloat(this::onScaleProgressChanged);
		private boolean mIsVerticalLayout;

		// Whether this class should take care of closing the keyboard.
		@@ -232,6 +240,52 @@ public class AllAppsTransitionController
		onProgressAnimationEnd();
		}

		@Override
		public void onBackProgressed(
		LauncherState toState, @FloatRange(from = 0.0, to = 1.0) float backProgress) {
		if (!mLauncher.isInState(ALL_APPS) \|\| !NORMAL.equals(toState)) {
		return;
		}

		float deceleratedProgress =
		Interpolators.PREDICTIVE_BACK_DECELERATED_EASE.getInterpolation(backProgress);
		float scaleProgress = SWIPE_ALL_APPS_TO_HOME_MIN_SCALE
		+ (1 - SWIPE_ALL_APPS_TO_HOME_MIN_SCALE) * (1 - deceleratedProgress);

		mAllAppScale.updateValue(scaleProgress);
		}

		@Override
		public void onBackCancelled(LauncherState toState) {
		if (!mLauncher.isInState(ALL_APPS) \|\| !NORMAL.equals(toState)) {
		return;
		}

		// TODO: once ag/20649618 is picked into tm-qpr, we don't need to animate back on cancel
		// swipe because framework will do that for us in {@link #onBackProgressed}.
		animateAllAppsToNoScale();
		}

		private void onScaleProgressChanged() {
		final float scaleProgress = mAllAppScale.value;
		SCALE_PROPERTY.set(mLauncher.getAppsView(), scaleProgress);
		mLauncher.getScrimView().setScrimHeaderScale(scaleProgress);

		AllAppsRecyclerView rv = mLauncher.getAppsView().getActiveRecyclerView();
		if (rv != null && rv.getScrollbar() != null) {
		rv.getScrollbar().setVisibility(scaleProgress < 1f ? View.INVISIBLE : View.VISIBLE);
		}

		// TODO(b/264906511): We need to disable view clipping on all apps' parent views so
		// that the extra roll of app icons are displayed.
		}

		private void animateAllAppsToNoScale() {
		mAllAppScale.animateToValue(1f)
		.setDuration(REVERT_SWIPE_ALL_APPS_TO_HOME_ANIMATION_DURATION_MS)
		.start();
		}

		/**
		* Creates an animation which updates the vertical transition progress and updates all the
		* dependent UI using various animation events
		@@ -258,6 +312,8 @@ public class AllAppsTransitionController
		if (config.userControlled && success && mShouldControlKeyboard) {
		mLauncher.getAppsView().getSearchUiManager().getEditText().hideKeyboard();
		}

		mAllAppScale.updateValue(1f);
		});
		}