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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.AbstractFloatingView.TYPE_ALL;
import static com.android.systemui.shared.system.ViewTreeObserverWrapper.InsetsInfo.TOUCHABLE_INSETS_CONTENT;
import static com.android.systemui.shared.system.ViewTreeObserverWrapper.InsetsInfo.TOUCHABLE_INSETS_FRAME;
import static com.android.systemui.shared.system.ViewTreeObserverWrapper.InsetsInfo.TOUCHABLE_INSETS_REGION;
import android.content.res.Resources;
import android.graphics.Rect;
import com.android.launcher3.AbstractFloatingView;
import com.android.launcher3.R;
import com.android.launcher3.anim.AlphaUpdateListener;
import com.android.quickstep.AnimatedFloat;
import com.android.systemui.shared.system.ViewTreeObserverWrapper.InsetsInfo;
/**
* Handles properties/data collection, then passes the results to TaskbarDragLayer to render.
*/
public class TaskbarDragLayerController {
private final TaskbarActivityContext mActivity;
private final TaskbarDragLayer mTaskbarDragLayer;
private final int mFolderMargin;
// Alpha properties for taskbar background.
private final AnimatedFloat mBgTaskbar = new AnimatedFloat(this::updateBackgroundAlpha);
private final AnimatedFloat mBgNavbar = new AnimatedFloat(this::updateBackgroundAlpha);
private final AnimatedFloat mKeyguardBgTaskbar = new AnimatedFloat(this::updateBackgroundAlpha);
private final AnimatedFloat mNotificationShadeBgTaskbar = new AnimatedFloat(
this::updateBackgroundAlpha);
private final AnimatedFloat mImeBgTaskbar = new AnimatedFloat(this::updateBackgroundAlpha);
// Used to hide our background color when someone else (e.g. ScrimView) is handling it.
private final AnimatedFloat mBgOverride = new AnimatedFloat(this::updateBackgroundAlpha);
// Translation property for taskbar background.
private final AnimatedFloat mBgOffset = new AnimatedFloat(this::updateBackgroundOffset);
// Initialized in init.
private TaskbarControllers mControllers;
private AnimatedFloat mNavButtonDarkIntensityMultiplier;
private float mLastSetBackgroundAlpha;
public TaskbarDragLayerController(TaskbarActivityContext activity,
TaskbarDragLayer taskbarDragLayer) {
mActivity = activity;
mTaskbarDragLayer = taskbarDragLayer;
final Resources resources = mTaskbarDragLayer.getResources();
mFolderMargin = resources.getDimensionPixelSize(R.dimen.taskbar_folder_margin);
}
public void init(TaskbarControllers controllers) {
mControllers = controllers;
mTaskbarDragLayer.init(new TaskbarDragLayerCallbacks());
mNavButtonDarkIntensityMultiplier = mControllers.navbarButtonsViewController
.getNavButtonDarkIntensityMultiplier();
mBgTaskbar.value = 1;
mKeyguardBgTaskbar.value = 1;
mNotificationShadeBgTaskbar.value = 1;
mImeBgTaskbar.value = 1;
mBgOverride.value = 1;
updateBackgroundAlpha();
}
public void onDestroy() {
mTaskbarDragLayer.onDestroy();
}
/**
* @return Bounds (in TaskbarDragLayer coordinates) where an opened Folder can display.
*/
public Rect getFolderBoundingBox() {
Rect boundingBox = new Rect(0, 0, mTaskbarDragLayer.getWidth(),
mTaskbarDragLayer.getHeight() - mActivity.getDeviceProfile().taskbarSize);
boundingBox.inset(mFolderMargin, mFolderMargin);
return boundingBox;
}
public AnimatedFloat getTaskbarBackgroundAlpha() {
return mBgTaskbar;
}
public AnimatedFloat getNavbarBackgroundAlpha() {
return mBgNavbar;
}
public AnimatedFloat getKeyguardBgTaskbar() {
return mKeyguardBgTaskbar;
}
public AnimatedFloat getNotificationShadeBgTaskbar() {
return mNotificationShadeBgTaskbar;
}
public AnimatedFloat getImeBgTaskbar() {
return mImeBgTaskbar;
}
public AnimatedFloat getOverrideBackgroundAlpha() {
return mBgOverride;
}
public AnimatedFloat getTaskbarBackgroundOffset() {
return mBgOffset;
}
private void updateBackgroundAlpha() {
final float bgNavbar = mBgNavbar.value;
final float bgTaskbar = mBgTaskbar.value * mKeyguardBgTaskbar.value
* mNotificationShadeBgTaskbar.value * mImeBgTaskbar.value;
mLastSetBackgroundAlpha = mBgOverride.value * Math.max(bgNavbar, bgTaskbar);
mTaskbarDragLayer.setTaskbarBackgroundAlpha(mLastSetBackgroundAlpha);
updateNavBarDarkIntensityMultiplier();
}
private void updateBackgroundOffset() {
mTaskbarDragLayer.setTaskbarBackgroundOffset(mBgOffset.value);
updateNavBarDarkIntensityMultiplier();
}
private void updateNavBarDarkIntensityMultiplier() {
// Zero out the app-requested dark intensity when we're drawing our own background.
float effectiveBgAlpha = mLastSetBackgroundAlpha * (1 - mBgOffset.value);
mNavButtonDarkIntensityMultiplier.updateValue(1 - effectiveBgAlpha);
}
/**
* Callbacks for {@link TaskbarDragLayer} to interact with its controller.
*/
public class TaskbarDragLayerCallbacks {
/**
* Called to update the touchable insets.
* @see InsetsInfo#setTouchableInsets(int)
*/
public void updateInsetsTouchability(InsetsInfo insetsInfo) {
insetsInfo.touchableRegion.setEmpty();
// Always have nav buttons be touchable
mControllers.navbarButtonsViewController.addVisibleButtonsRegion(
mTaskbarDragLayer, insetsInfo.touchableRegion);
boolean insetsIsTouchableRegion = true;
if (mTaskbarDragLayer.getAlpha() < AlphaUpdateListener.ALPHA_CUTOFF_THRESHOLD) {
// Let touches pass through us.
insetsInfo.setTouchableInsets(TOUCHABLE_INSETS_REGION);
} else if (mControllers.navbarButtonsViewController.isImeVisible()) {
insetsInfo.setTouchableInsets(TOUCHABLE_INSETS_REGION);
} else if (!mControllers.uiController.isTaskbarTouchable()) {
// Let touches pass through us.
insetsInfo.setTouchableInsets(TOUCHABLE_INSETS_REGION);
} else if (mControllers.taskbarViewController.areIconsVisible()
|| AbstractFloatingView.getOpenView(mActivity, TYPE_ALL) != null) {
// Taskbar has some touchable elements, take over the full taskbar area
insetsInfo.setTouchableInsets(mActivity.isTaskbarWindowFullscreen()
? TOUCHABLE_INSETS_FRAME : TOUCHABLE_INSETS_CONTENT);
insetsIsTouchableRegion = false;
} else {
insetsInfo.setTouchableInsets(TOUCHABLE_INSETS_REGION);
}
mActivity.excludeFromMagnificationRegion(insetsIsTouchableRegion);
}
/**
* Called to update the {@link InsetsInfo#contentInsets}. This is reported to apps but our
* internal launcher will ignore these insets.
*/
public void updateContentInsets(Rect outContentInsets) {
int contentHeight = mControllers.taskbarStashController
.getContentHeightToReportToApps();
outContentInsets.top = mTaskbarDragLayer.getHeight() - contentHeight;
}
/**
* Called when a child is removed from TaskbarDragLayer.
*/
public void onDragLayerViewRemoved() {
if (AbstractFloatingView.getAnyView(mActivity, TYPE_ALL) == null) {
mActivity.setTaskbarWindowFullscreen(false);
}
}
/**
* Returns how tall the background should be drawn at the bottom of the screen.
*/
public int getTaskbarBackgroundHeight() {
return mActivity.getDeviceProfile().taskbarSize;
}
}
}
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