MrSluffy
112 lines
3.8 KiB
Java
112 lines
3.8 KiB
Java
/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.wm.shell.unfold;
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import static android.graphics.Color.blue;
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import static android.graphics.Color.green;
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import static android.graphics.Color.red;
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import android.annotation.ColorRes;
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import android.annotation.NonNull;
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import android.content.Context;
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import android.view.SurfaceControl;
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import com.android.wm.shell.R;
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/**
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* Controls background color layer for the unfold animations
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*/
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public class UnfoldBackgroundController {
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private static final int BACKGROUND_LAYER_Z_INDEX = -1;
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private final float[] mBackgroundColor;
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private final float[] mSplitScreenBackgroundColor;
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private float[] mBackgroundColorSet;
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private SurfaceControl mBackgroundLayer;
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private boolean mSplitScreenVisible = false;
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public UnfoldBackgroundController(@NonNull Context context) {
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mBackgroundColor = getRGBColorFromId(context, R.color.unfold_background);
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mSplitScreenBackgroundColor = getRGBColorFromId(context, R.color.split_divider_background);
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}
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/**
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* Ensures that unfold animation background color layer is present,
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* @param transaction where we should add the background if it is not added
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*/
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public void ensureBackground(@NonNull SurfaceControl.Transaction transaction) {
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float[] expectedColor = getCurrentBackgroundColor();
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if (mBackgroundLayer != null) {
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if (mBackgroundColorSet != expectedColor) {
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transaction.setColor(mBackgroundLayer, expectedColor);
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mBackgroundColorSet = expectedColor;
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}
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return;
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}
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SurfaceControl.Builder colorLayerBuilder = new SurfaceControl.Builder()
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.setName("app-unfold-background")
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.setCallsite("AppUnfoldTransitionController")
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.setColorLayer();
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mBackgroundLayer = colorLayerBuilder.build();
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transaction
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.setColor(mBackgroundLayer, expectedColor)
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.show(mBackgroundLayer)
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.setLayer(mBackgroundLayer, BACKGROUND_LAYER_Z_INDEX);
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mBackgroundColorSet = expectedColor;
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}
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/**
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* Ensures that the background is not visible
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* @param transaction as part of which the removal will happen if needed
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*/
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public void removeBackground(@NonNull SurfaceControl.Transaction transaction) {
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if (mBackgroundLayer == null) return;
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if (mBackgroundLayer.isValid()) {
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transaction.remove(mBackgroundLayer);
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}
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mBackgroundLayer = null;
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}
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/**
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* Expected to be called whenever split screen visibility changes.
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*
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* @param visible True when split screen is visible
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*/
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public void onSplitVisibilityChanged(boolean visible) {
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mSplitScreenVisible = visible;
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}
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private float[] getCurrentBackgroundColor() {
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if (mSplitScreenVisible) {
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return mSplitScreenBackgroundColor;
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} else {
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return mBackgroundColor;
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}
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}
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private float[] getRGBColorFromId(Context context, @ColorRes int id) {
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int colorInt = context.getResources().getColor(id);
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return new float[]{
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(float) red(colorInt) / 255.0F,
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(float) green(colorInt) / 255.0F,
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(float) blue(colorInt) / 255.0F
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};
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}
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}
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