| /* |
| * Copyright (C) 2020 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.systemui.shared.system; |
| |
| import android.content.Context; |
| import android.graphics.PixelFormat; |
| import android.os.Bundle; |
| import android.os.IBinder; |
| import android.util.Size; |
| import android.view.SurfaceControl; |
| import android.view.SurfaceControlViewHost; |
| import android.view.View; |
| import android.view.WindowManager; |
| import android.view.WindowlessWindowManager; |
| |
| /** |
| * A generic receiver that specifically handles SurfaceView request created by {@link |
| * com.android.systemui.shared.system.SurfaceViewRequestUtils}. |
| */ |
| public class SurfaceViewRequestReceiver { |
| |
| private final int mOpacity; |
| private SurfaceControlViewHost mSurfaceControlViewHost; |
| |
| public SurfaceViewRequestReceiver() { |
| this(PixelFormat.TRANSPARENT); |
| } |
| |
| public SurfaceViewRequestReceiver(int opacity) { |
| mOpacity = opacity; |
| } |
| |
| /** See {@link #onReceive(Context, Bundle, View, Size)}. */ |
| public void onReceive(Context context, Bundle bundle, View view) { |
| onReceive(context, bundle, view, null); |
| } |
| |
| /** |
| * Called whenever a surface view request is received. |
| * @param view the view rendering content, on the receiver end of the surface request. |
| * @param viewSize when {@param viewSize} is not specified, we will use the surface control size |
| * to attach the view to the window. |
| */ |
| public void onReceive(Context context, Bundle bundle, View view, Size viewSize) { |
| if (mSurfaceControlViewHost != null) { |
| mSurfaceControlViewHost.die(); |
| } |
| SurfaceControl surfaceControl = SurfaceViewRequestUtils.getSurfaceControl(bundle); |
| if (surfaceControl != null) { |
| if (viewSize == null) { |
| viewSize = new Size(surfaceControl.getWidth(), surfaceControl.getHeight()); |
| } |
| |
| IBinder hostToken = SurfaceViewRequestUtils.getHostToken(bundle); |
| |
| WindowlessWindowManager windowlessWindowManager = |
| new WindowlessWindowManager(context.getResources().getConfiguration(), |
| surfaceControl, hostToken); |
| mSurfaceControlViewHost = new SurfaceControlViewHost(context, |
| context.getDisplayNoVerify(), windowlessWindowManager); |
| WindowManager.LayoutParams layoutParams = |
| new WindowManager.LayoutParams( |
| viewSize.getWidth(), |
| viewSize.getHeight(), |
| WindowManager.LayoutParams.TYPE_APPLICATION, |
| WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED, |
| mOpacity); |
| |
| // This aspect scales the view to fit in the surface and centers it |
| final float scale = Math.min(surfaceControl.getWidth() / (float) viewSize.getWidth(), |
| surfaceControl.getHeight() / (float) viewSize.getHeight()); |
| view.setScaleX(scale); |
| view.setScaleY(scale); |
| view.setPivotX(0); |
| view.setPivotY(0); |
| view.setTranslationX((surfaceControl.getWidth() - scale * viewSize.getWidth()) / 2); |
| view.setTranslationY((surfaceControl.getHeight() - scale * viewSize.getHeight()) / 2); |
| |
| mSurfaceControlViewHost.addView(view, layoutParams); |
| } |
| } |
| } |