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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License
     15  */
     16 
     17 package com.android.systemui.statusbar.policy;
     18 
     19 import android.annotation.NonNull;
     20 import android.content.res.Resources;
     21 import android.util.ArraySet;
     22 import android.view.ContextThemeWrapper;
     23 import android.view.LayoutInflater;
     24 import android.view.View;
     25 import android.widget.FrameLayout;
     26 
     27 import com.android.internal.util.Preconditions;
     28 import com.android.systemui.R;
     29 import com.android.systemui.statusbar.phone.NotificationPanelView;
     30 import com.android.systemui.statusbar.phone.StatusBarWindowView;
     31 
     32 import java.util.function.Consumer;
     33 
     34 /**
     35  * Controls showing and hiding of the brightness mirror.
     36  */
     37 public class BrightnessMirrorController
     38         implements CallbackController<BrightnessMirrorController.BrightnessMirrorListener> {
     39 
     40     private final StatusBarWindowView mStatusBarWindow;
     41     private final Consumer<Boolean> mVisibilityCallback;
     42     private final NotificationPanelView mNotificationPanel;
     43     private final ArraySet<BrightnessMirrorListener> mBrightnessMirrorListeners = new ArraySet<>();
     44     private final int[] mInt2Cache = new int[2];
     45     private View mBrightnessMirror;
     46 
     47     public BrightnessMirrorController(StatusBarWindowView statusBarWindow,
     48             @NonNull Consumer<Boolean> visibilityCallback) {
     49         mStatusBarWindow = statusBarWindow;
     50         mBrightnessMirror = statusBarWindow.findViewById(R.id.brightness_mirror);
     51         mNotificationPanel = statusBarWindow.findViewById(R.id.notification_panel);
     52         mNotificationPanel.setPanelAlphaEndAction(() -> {
     53             mBrightnessMirror.setVisibility(View.INVISIBLE);
     54         });
     55         mVisibilityCallback = visibilityCallback;
     56     }
     57 
     58     public void showMirror() {
     59         mBrightnessMirror.setVisibility(View.VISIBLE);
     60         mVisibilityCallback.accept(true);
     61         mNotificationPanel.setPanelAlpha(0, true /* animate */);
     62     }
     63 
     64     public void hideMirror() {
     65         mVisibilityCallback.accept(false);
     66         mNotificationPanel.setPanelAlpha(255, true /* animate */);
     67     }
     68 
     69     public void setLocation(View original) {
     70         original.getLocationInWindow(mInt2Cache);
     71 
     72         // Original is slightly larger than the mirror, so make sure to use the center for the
     73         // positioning.
     74         int originalX = mInt2Cache[0] + original.getWidth() / 2;
     75         int originalY = mInt2Cache[1] + original.getHeight() / 2;
     76         mBrightnessMirror.setTranslationX(0);
     77         mBrightnessMirror.setTranslationY(0);
     78         mBrightnessMirror.getLocationInWindow(mInt2Cache);
     79         int mirrorX = mInt2Cache[0] + mBrightnessMirror.getWidth() / 2;
     80         int mirrorY = mInt2Cache[1] + mBrightnessMirror.getHeight() / 2;
     81         mBrightnessMirror.setTranslationX(originalX - mirrorX);
     82         mBrightnessMirror.setTranslationY(originalY - mirrorY);
     83     }
     84 
     85     public View getMirror() {
     86         return mBrightnessMirror;
     87     }
     88 
     89     public void updateResources() {
     90         FrameLayout.LayoutParams lp =
     91                 (FrameLayout.LayoutParams) mBrightnessMirror.getLayoutParams();
     92         Resources r = mBrightnessMirror.getResources();
     93         lp.width = r.getDimensionPixelSize(R.dimen.qs_panel_width);
     94         lp.height = r.getDimensionPixelSize(R.dimen.brightness_mirror_height);
     95         lp.gravity = r.getInteger(R.integer.notification_panel_layout_gravity);
     96         mBrightnessMirror.setLayoutParams(lp);
     97     }
     98 
     99     public void onOverlayChanged() {
    100         reinflate();
    101     }
    102 
    103     public void onDensityOrFontScaleChanged() {
    104         reinflate();
    105     }
    106 
    107     private void reinflate() {
    108         ContextThemeWrapper qsThemeContext =
    109                 new ContextThemeWrapper(mBrightnessMirror.getContext(), R.style.qs_theme);
    110         int index = mStatusBarWindow.indexOfChild(mBrightnessMirror);
    111         mStatusBarWindow.removeView(mBrightnessMirror);
    112         mBrightnessMirror = LayoutInflater.from(qsThemeContext).inflate(
    113                 R.layout.brightness_mirror, mStatusBarWindow, false);
    114         mStatusBarWindow.addView(mBrightnessMirror, index);
    115 
    116         for (int i = 0; i < mBrightnessMirrorListeners.size(); i++) {
    117             mBrightnessMirrorListeners.valueAt(i).onBrightnessMirrorReinflated(mBrightnessMirror);
    118         }
    119     }
    120 
    121     @Override
    122     public void addCallback(BrightnessMirrorListener listener) {
    123         Preconditions.checkNotNull(listener);
    124         mBrightnessMirrorListeners.add(listener);
    125     }
    126 
    127     @Override
    128     public void removeCallback(BrightnessMirrorListener listener) {
    129         mBrightnessMirrorListeners.remove(listener);
    130     }
    131 
    132     public interface BrightnessMirrorListener {
    133         void onBrightnessMirrorReinflated(View brightnessMirror);
    134     }
    135 }
    136