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Stash/unstash the task bar based on states

Browse Source 
Bug: 193938970
Test: go to any app, stash/unstash, and make sure the states are preserved
Change-Id: I3adf826407e90275687ecea8302abf7a004f1df7
This commit is contained in:
Tracy Zhou
2021-09-02 22:49:34 -07:00
parent d74703d63d
commit 527b39cd28
2 changed files with 71 additions and 32 deletions
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83
quickstep/src/com/android/launcher3/taskbar/TaskbarStashController.java
View File

@@ -31,12 +31,17 @@ import com.android.launcher3.util.MultiValueAlpha.AlphaProperty;
import com.android.quickstep.AnimatedFloat;
import com.android.quickstep.SystemUiProxy;
import java.util.function.IntPredicate;
/**
* Coordinates between controllers such as TaskbarViewController and StashedHandleViewController to
* create a cohesive animation between stashed/unstashed states.
*/
public class TaskbarStashController {
public static final int FLAG_IN_APP = 1 << 0;
public static final int FLAG_STASHED_IN_APP = 1 << 1;
/**
* How long to stash/unstash when manually invoked via long press.
*/
@@ -78,6 +83,9 @@ public class TaskbarStashController {
private final int mStashedHeight;
private final int mUnstashedHeight;
private final StatePropertyHolder mStatePropertyHolder = new StatePropertyHolder(
flags -> (((flags & FLAG_IN_APP) != 0) && (flags & FLAG_STASHED_IN_APP) != 0));
// Initialized in init.
private TaskbarControllers mControllers;
// Taskbar background properties.
@@ -94,6 +102,7 @@ public class TaskbarStashController {
private boolean mIsStashedInApp;
/** Whether we are currently visually stashed (might change based on launcher state). */
private boolean mIsStashed = false;
private int mState;
private @Nullable AnimatorSet mAnimator;
@@ -124,6 +133,7 @@ public class TaskbarStashController {
mIsStashedInApp = supportsStashing()
&& mPrefs.getBoolean(SHARED_PREFS_STASHED_KEY, DEFAULT_STASHED_PREF);
updateStateForFlag(FLAG_STASHED_IN_APP, mIsStashedInApp);
SystemUiProxy.INSTANCE.get(mActivity)
.notifyTaskbarStatus(/* visible */ true, /* stashed */ mIsStashedInApp);
@@ -190,35 +200,19 @@ public class TaskbarStashController {
return false;
}
if (mIsStashedInApp != isStashedInApp) {
boolean wasStashed = mIsStashedInApp;
mIsStashedInApp = isStashedInApp;
mPrefs.edit().putBoolean(SHARED_PREFS_STASHED_KEY, mIsStashedInApp).apply();
boolean isStashed = mIsStashedInApp;
if (wasStashed != isStashed) {
SystemUiProxy.INSTANCE.get(mActivity)
.notifyTaskbarStatus(/* visible */ true, /* stashed */ isStashed);
mControllers.uiController.onStashedInAppChanged();
createAnimToIsStashed(isStashed, TASKBAR_STASH_DURATION).start();
return true;
}
updateStateForFlag(FLAG_STASHED_IN_APP, mIsStashedInApp);
applyState();
SystemUiProxy.INSTANCE.get(mActivity)
.notifyTaskbarStatus(/* visible */ true, /* stashed */ mIsStashedInApp);
mControllers.uiController.onStashedInAppChanged();
return true;
}
return false;
}
/**
* Starts an animation to the new stashed state with a default duration.
*/
public void animateToIsStashed(boolean isStashed) {
animateToIsStashed(isStashed, TASKBAR_STASH_DURATION);
}
/**
* Starts an animation to the new stashed state with the specified duration.
*/
public void animateToIsStashed(boolean isStashed, long duration) {
createAnimToIsStashed(isStashed, duration).start();
}
private Animator createAnimToIsStashed(boolean isStashed, long duration) {
AnimatorSet fullLengthAnimatorSet = new AnimatorSet();
// Not exactly half and may overlap. See [first|second]HalfDurationScale below.
@@ -331,4 +325,47 @@ public class TaskbarStashController {
private void onIsStashed(boolean isStashed) {
mControllers.stashedHandleViewController.onIsStashed(isStashed);
}
public void applyState() {
applyState(TASKBAR_STASH_DURATION);
}
public void applyState(long duration) {
mStatePropertyHolder.setState(mState, duration);
}
/**
* Updates the proper flag to indicate whether the task bar should be stashed.
*
* Note that this only updates the flag. {@link #applyState()} needs to be called separately.
*
* @param flag The flag to update.
* @param enabled Whether to enable the flag: True will cause the task bar to be stashed /
* unstashed.
*/
public void updateStateForFlag(int flag, boolean enabled) {
if (enabled) {
mState |= flag;
} else {
mState &= ~flag;
}
}
private class StatePropertyHolder {
private final IntPredicate mStashCondition;
private boolean mIsStashed;
StatePropertyHolder(IntPredicate stashCondition) {
mStashCondition = stashCondition;
}
public void setState(int flags, long duration) {
boolean isStashed = mStashCondition.test(flags);
if (mIsStashed != isStashed) {
mIsStashed = isStashed;
createAnimToIsStashed(mIsStashed, duration).start();
}
}
}
}