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/*
* Copyright (C) 2021 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.taskbar;
import static com.android.launcher3.LauncherState.TASKBAR;
import static com.android.launcher3.anim.Interpolators.ACCEL_DEACCEL;
import static com.android.launcher3.anim.Interpolators.LINEAR;
import androidx.annotation.Nullable;
import com.android.launcher3.BaseQuickstepLauncher;
import com.android.launcher3.LauncherState;
import com.android.launcher3.anim.PendingAnimation;
import com.android.launcher3.anim.PropertySetter;
import com.android.launcher3.statemanager.StateManager;
import com.android.launcher3.states.StateAnimationConfig;
import com.android.quickstep.AnimatedFloat;
/**
* StateHandler to animate Taskbar according to Launcher's state machine. Does nothing if Taskbar
* isn't present (i.e. {@link #setAnimationController} is never called).
*/
public class TaskbarStateHandler implements StateManager.StateHandler<LauncherState> {
private final BaseQuickstepLauncher mLauncher;
// Contains Taskbar-related methods and fields we should aniamte. If null, don't do anything.
private @Nullable TaskbarAnimationController mAnimationController = null;
public TaskbarStateHandler(BaseQuickstepLauncher launcher) {
mLauncher = launcher;
}
public void setAnimationController(TaskbarAnimationController callbacks) {
mAnimationController = callbacks;
}
@Override
public void setState(LauncherState state) {
setState(state, PropertySetter.NO_ANIM_PROPERTY_SETTER);
}
@Override
public void setStateWithAnimation(LauncherState toState, StateAnimationConfig config,
PendingAnimation animation) {
setState(toState, animation);
}
private void setState(LauncherState toState, PropertySetter setter) {
if (mAnimationController == null) {
return;
}
boolean isTaskbarVisible = (toState.getVisibleElements(mLauncher) & TASKBAR) != 0;
setter.setFloat(mAnimationController.getTaskbarVisibilityForLauncherState(),
AnimatedFloat.VALUE, isTaskbarVisible ? 1f : 0f, LINEAR);
setter.setFloat(mAnimationController.getTaskbarScaleForLauncherState(),
AnimatedFloat.VALUE, toState.getTaskbarScale(mLauncher), LINEAR);
setter.setFloat(mAnimationController.getTaskbarTranslationYForLauncherState(),
AnimatedFloat.VALUE, toState.getTaskbarTranslationY(mLauncher), ACCEL_DEACCEL);
}
}
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