Winson Chung
2a00f81327
- Previously we only check for the flag which is always true in the normal launcher state, so if the animation starts, we could end up writing the back alpha value without accounting for window focus or any other states that launcher is in that affects back button visibility Bug: 155129739 Test: Open -1 article and hit back Change-Id: I42d27a192b23f394f8565a6893ce092603e31654
72 lines
2.7 KiB
Java
72 lines
2.7 KiB
Java
/*
|
|
* 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.launcher3.statehandlers;
|
|
|
|
import static com.android.launcher3.LauncherState.FLAG_HIDE_BACK_BUTTON;
|
|
import static com.android.launcher3.anim.Interpolators.LINEAR;
|
|
import static com.android.quickstep.AnimatedFloat.VALUE;
|
|
|
|
import com.android.launcher3.BaseQuickstepLauncher;
|
|
import com.android.launcher3.LauncherState;
|
|
import com.android.launcher3.LauncherStateManager;
|
|
import com.android.launcher3.anim.PendingAnimation;
|
|
import com.android.launcher3.states.StateAnimationConfig;
|
|
import com.android.launcher3.util.UiThreadHelper;
|
|
import com.android.quickstep.AnimatedFloat;
|
|
import com.android.quickstep.SysUINavigationMode;
|
|
import com.android.quickstep.SystemUiProxy;
|
|
|
|
/**
|
|
* State handler for animating back button alpha
|
|
*/
|
|
public class BackButtonAlphaHandler implements LauncherStateManager.StateHandler {
|
|
|
|
private final BaseQuickstepLauncher mLauncher;
|
|
private final AnimatedFloat mBackAlpha = new AnimatedFloat(this::updateBackAlpha);
|
|
|
|
public BackButtonAlphaHandler(BaseQuickstepLauncher launcher) {
|
|
mLauncher = launcher;
|
|
}
|
|
|
|
@Override
|
|
public void setState(LauncherState state) { }
|
|
|
|
@Override
|
|
public void setStateWithAnimation(LauncherState toState, StateAnimationConfig config,
|
|
PendingAnimation animation) {
|
|
if (config.onlyPlayAtomicComponent()) {
|
|
return;
|
|
}
|
|
|
|
if (!SysUINavigationMode.getMode(mLauncher).hasGestures) {
|
|
// If the nav mode is not gestural, then force back button alpha to be 1
|
|
UiThreadHelper.setBackButtonAlphaAsync(mLauncher,
|
|
BaseQuickstepLauncher.SET_BACK_BUTTON_ALPHA, 1f, true /* animate */);
|
|
return;
|
|
}
|
|
|
|
mBackAlpha.value = SystemUiProxy.INSTANCE.get(mLauncher).getLastBackButtonAlpha();
|
|
animation.setFloat(mBackAlpha, VALUE,
|
|
mLauncher.shouldBackButtonBeHidden(toState) ? 0 : 1, LINEAR);
|
|
}
|
|
|
|
private void updateBackAlpha() {
|
|
UiThreadHelper.setBackButtonAlphaAsync(mLauncher,
|
|
BaseQuickstepLauncher.SET_BACK_BUTTON_ALPHA, mBackAlpha.value, false /* animate */);
|
|
}
|
|
}
|