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/*
* Copyright (C) 2020 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.quickstep;
import static android.view.Surface.ROTATION_0;
import static com.android.launcher3.util.DefaultDisplay.CHANGE_ALL;
import static com.android.launcher3.util.DefaultDisplay.CHANGE_FRAME_DELAY;
import static com.android.launcher3.util.Executors.UI_HELPER_EXECUTOR;
import static com.android.quickstep.SysUINavigationMode.Mode.THREE_BUTTONS;
import android.content.Context;
import android.content.res.Resources;
import android.view.MotionEvent;
import android.view.OrientationEventListener;
import com.android.launcher3.testing.TestProtocol;
import com.android.launcher3.util.DefaultDisplay;
import com.android.launcher3.util.MainThreadInitializedObject;
import com.android.quickstep.util.RecentsOrientedState;
import com.android.systemui.shared.system.ActivityManagerWrapper;
import com.android.systemui.shared.system.QuickStepContract;
import com.android.systemui.shared.system.TaskStackChangeListener;
import java.io.PrintWriter;
import java.util.ArrayList;
public class RotationTouchHelper implements
SysUINavigationMode.NavigationModeChangeListener,
DefaultDisplay.DisplayInfoChangeListener {
private final OrientationTouchTransformer mOrientationTouchTransformer;
private final DefaultDisplay mDefaultDisplay;
private final SysUINavigationMode mSysUiNavMode;
private final int mDisplayId;
private int mDisplayRotation;
private final ArrayList<Runnable> mOnDestroyActions = new ArrayList<>();
private SysUINavigationMode.Mode mMode = THREE_BUTTONS;
private TaskStackChangeListener mFrozenTaskListener = new TaskStackChangeListener() {
@Override
public void onRecentTaskListFrozenChanged(boolean frozen) {
mTaskListFrozen = frozen;
if (frozen || mInOverview) {
return;
}
enableMultipleRegions(false);
}
@Override
public void onActivityRotation(int displayId) {
super.onActivityRotation(displayId);
// This always gets called before onDisplayInfoChanged() so we know how to process
// the rotation in that method. This is done to avoid having a race condition between
// the sensor readings and onDisplayInfoChanged() call
if (displayId != mDisplayId) {
return;
}
mPrioritizeDeviceRotation = true;
if (mInOverview) {
// reset, launcher must be rotating
mExitOverviewRunnable.run();
}
}
};
private Runnable mExitOverviewRunnable = new Runnable() {
@Override
public void run() {
mInOverview = false;
enableMultipleRegions(false);
}
};
/**
* Used to listen for when the device rotates into the orientation of the current foreground
* app. For example, if a user quickswitches from a portrait to a fixed landscape app and then
* rotates rotates the device to match that orientation, this triggers calls to sysui to adjust
* the navbar.
*/
private OrientationEventListener mOrientationListener;
private int mSensorRotation = ROTATION_0;
/**
* This is the configuration of the foreground app or the app that will be in the foreground
* once a quickstep gesture finishes.
*/
private int mCurrentAppRotation = -1;
/**
* This flag is set to true when the device physically changes orientations. When true, we will
* always report the current rotation of the foreground app whenever the display changes, as it
* would indicate the user's intention to rotate the foreground app.
*/
private boolean mPrioritizeDeviceRotation = false;
private Runnable mOnDestroyFrozenTaskRunnable;
/**
* Set to true when user swipes to recents. In recents, we ignore the state of the recents
* task list being frozen or not to allow the user to keep interacting with nav bar rotation
* they went into recents with as opposed to defaulting to the default display rotation.
* TODO: (b/156984037) For when user rotates after entering overview
*/
private boolean mInOverview;
private boolean mTaskListFrozen;
private final Context mContext;
public RotationTouchHelper(Context context) {
mContext = context;
Resources resources = mContext.getResources();
mSysUiNavMode = SysUINavigationMode.INSTANCE.get(context);
mDefaultDisplay = DefaultDisplay.INSTANCE.get(context);
mDisplayId = mDefaultDisplay.getInfo().id;
mOrientationTouchTransformer = new OrientationTouchTransformer(resources, mMode,
() -> QuickStepContract.getWindowCornerRadius(resources));
// Register for navigation mode changes
onNavigationModeChanged(mSysUiNavMode.addModeChangeListener(this));
runOnDestroy(() -> mSysUiNavMode.removeModeChangeListener(this));
mOrientationListener = new OrientationEventListener(context) {
@Override
public void onOrientationChanged(int degrees) {
int newRotation = RecentsOrientedState.getRotationForUserDegreesRotated(degrees,
mSensorRotation);
if (newRotation == mSensorRotation) {
return;
}
mSensorRotation = newRotation;
mPrioritizeDeviceRotation = true;
if (newRotation == mCurrentAppRotation) {
// When user rotates device to the orientation of the foreground app after
// quickstepping
toggleSecondaryNavBarsForRotation();
}
}
};
}
private void setupOrientationSwipeHandler() {
ActivityManagerWrapper.getInstance().registerTaskStackListener(mFrozenTaskListener);
mOnDestroyFrozenTaskRunnable = () -> ActivityManagerWrapper.getInstance()
.unregisterTaskStackListener(mFrozenTaskListener);
runOnDestroy(mOnDestroyFrozenTaskRunnable);
}
private void destroyOrientationSwipeHandlerCallback() {
ActivityManagerWrapper.getInstance().unregisterTaskStackListener(mFrozenTaskListener);
mOnDestroyActions.remove(mOnDestroyFrozenTaskRunnable);
}
private void runOnDestroy(Runnable action) {
mOnDestroyActions.add(action);
}
/**
* Cleans up all the registered listeners and receivers.
*/
public void destroy() {
for (Runnable r : mOnDestroyActions) {
r.run();
}
}
public boolean isTaskListFrozen() {
return mTaskListFrozen;
}
public boolean touchInAssistantRegion(MotionEvent ev) {
return mOrientationTouchTransformer.touchInAssistantRegion(ev);
}
/**
* Updates the regions for detecting the swipe up/quickswitch and assistant gestures.
*/
public void updateGestureTouchRegions() {
if (!mMode.hasGestures) {
return;
}
mOrientationTouchTransformer.createOrAddTouchRegion(mDefaultDisplay.getInfo());
}
/**
* @return whether the coordinates of the {@param event} is in the swipe up gesture region.
*/
public boolean isInSwipeUpTouchRegion(MotionEvent event) {
return mOrientationTouchTransformer.touchInValidSwipeRegions(event.getX(), event.getY());
}
/**
* @return whether the coordinates of the {@param event} with the given {@param pointerIndex}
* is in the swipe up gesture region.
*/
public boolean isInSwipeUpTouchRegion(MotionEvent event, int pointerIndex) {
return mOrientationTouchTransformer.touchInValidSwipeRegions(event.getX(pointerIndex),
event.getY(pointerIndex));
}
@Override
public void onNavigationModeChanged(SysUINavigationMode.Mode newMode) {
mDefaultDisplay.removeChangeListener(this);
mDefaultDisplay.addChangeListener(this);
onDisplayInfoChanged(mDefaultDisplay.getInfo(), CHANGE_ALL);
mOrientationTouchTransformer.setNavigationMode(newMode, mDefaultDisplay.getInfo());
if (!mMode.hasGestures && newMode.hasGestures) {
setupOrientationSwipeHandler();
} else if (mMode.hasGestures && !newMode.hasGestures){
destroyOrientationSwipeHandlerCallback();
}
mMode = newMode;
}
public int getDisplayRotation() {
return mDisplayRotation;
}
@Override
public void onDisplayInfoChanged(DefaultDisplay.Info info, int flags) {
if (info.id != mDisplayId|| flags == CHANGE_FRAME_DELAY) {
// ignore displays that aren't running launcher and frame refresh rate changes
return;
}
mDisplayRotation = info.rotation;
if (!mMode.hasGestures) {
return;
}
updateGestureTouchRegions();
mOrientationTouchTransformer.createOrAddTouchRegion(info);
mCurrentAppRotation = mDisplayRotation;
/* Update nav bars on the following:
* a) if this is coming from an activity rotation OR
* aa) we launch an app in the orientation that user is already in
* b) We're not in overview, since overview will always be portrait (w/o home rotation)
* c) We're actively in quickswitch mode
*/
if ((mPrioritizeDeviceRotation
|| mCurrentAppRotation == mSensorRotation) // switch to an app of orientation user is in
&& !mInOverview
&& mTaskListFrozen) {
toggleSecondaryNavBarsForRotation();
}
}
/**
* *May* apply a transform on the motion event if it lies in the nav bar region for another
* orientation that is currently being tracked as a part of quickstep
*/
void setOrientationTransformIfNeeded(MotionEvent event) {
// negative coordinates bug b/143901881
if (event.getX() < 0 || event.getY() < 0) {
event.setLocation(Math.max(0, event.getX()), Math.max(0, event.getY()));
}
mOrientationTouchTransformer.transform(event);
}
private void enableMultipleRegions(boolean enable) {
mOrientationTouchTransformer.enableMultipleRegions(enable, mDefaultDisplay.getInfo());
notifySysuiOfCurrentRotation(mOrientationTouchTransformer.getQuickStepStartingRotation());
if (enable && !mInOverview && !TestProtocol.sDisableSensorRotation) {
// Clear any previous state from sensor manager
mSensorRotation = mCurrentAppRotation;
mOrientationListener.enable();
} else {
mOrientationListener.disable();
}
}
public void onStartGesture() {
if (mTaskListFrozen) {
// Prioritize whatever nav bar user touches once in quickstep
// This case is specifically when user changes what nav bar they are using mid
// quickswitch session before tasks list is unfrozen
notifySysuiOfCurrentRotation(mOrientationTouchTransformer.getCurrentActiveRotation());
}
}
void onEndTargetCalculated(GestureState.GestureEndTarget endTarget,
BaseActivityInterface activityInterface) {
if (endTarget == GestureState.GestureEndTarget.RECENTS) {
mInOverview = true;
if (!mTaskListFrozen) {
// If we're in landscape w/o ever quickswitching, show the navbar in landscape
enableMultipleRegions(true);
}
activityInterface.onExitOverview(this, mExitOverviewRunnable);
} else if (endTarget == GestureState.GestureEndTarget.HOME) {
enableMultipleRegions(false);
} else if (endTarget == GestureState.GestureEndTarget.NEW_TASK) {
if (mOrientationTouchTransformer.getQuickStepStartingRotation() == -1) {
// First gesture to start quickswitch
enableMultipleRegions(true);
} else {
notifySysuiOfCurrentRotation(
mOrientationTouchTransformer.getCurrentActiveRotation());
}
// A new gesture is starting, reset the current device rotation
// This is done under the assumption that the user won't rotate the phone and then
// quickswitch in the old orientation.
mPrioritizeDeviceRotation = false;
} else if (endTarget == GestureState.GestureEndTarget.LAST_TASK) {
if (!mTaskListFrozen) {
// touched nav bar but didn't go anywhere and not quickswitching, do nothing
return;
}
notifySysuiOfCurrentRotation(mOrientationTouchTransformer.getCurrentActiveRotation());
}
}
private void notifySysuiOfCurrentRotation(int rotation) {
UI_HELPER_EXECUTOR.execute(() -> SystemUiProxy.INSTANCE.get(mContext)
.onQuickSwitchToNewTask(rotation));
}
/**
* Disables/Enables multiple nav bars on {@link OrientationTouchTransformer} and then
* notifies system UI of the primary rotation the user is interacting with
*/
private void toggleSecondaryNavBarsForRotation() {
mOrientationTouchTransformer.setSingleActiveRegion(mDefaultDisplay.getInfo());
notifySysuiOfCurrentRotation(mOrientationTouchTransformer.getCurrentActiveRotation());
}
public int getCurrentActiveRotation() {
if (!mMode.hasGestures) {
// touch rotation should always match that of display for 3 button
return mDisplayRotation;
}
return mOrientationTouchTransformer.getCurrentActiveRotation();
}
public void dump(PrintWriter pw) {
pw.println("RotationTouchHelper:");
pw.println(" currentActiveRotation=" + getCurrentActiveRotation());
pw.println(" displayRotation=" + getDisplayRotation());
mOrientationTouchTransformer.dump(pw);
}
}