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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.view.LayoutInflater;
     20 import android.view.View;
     21 import android.view.ViewPropertyAnimator;
     22 import android.widget.FrameLayout;
     23 
     24 import com.android.systemui.Interpolators;
     25 import com.android.systemui.R;
     26 import com.android.systemui.statusbar.ScrimView;
     27 import com.android.systemui.statusbar.phone.StatusBarWindowView;
     28 import com.android.systemui.statusbar.stack.NotificationStackScrollLayout;
     29 
     30 /**
     31  * Controls showing and hiding of the brightness mirror.
     32  */
     33 public class BrightnessMirrorController {
     34 
     35     private final NotificationStackScrollLayout mStackScroller;
     36     public long TRANSITION_DURATION_OUT = 150;
     37     public long TRANSITION_DURATION_IN = 200;
     38 
     39     private final StatusBarWindowView mStatusBarWindow;
     40     private final ScrimView mScrimBehind;
     41     private final View mNotificationPanel;
     42     private final int[] mInt2Cache = new int[2];
     43     private View mBrightnessMirror;
     44 
     45     public BrightnessMirrorController(StatusBarWindowView statusBarWindow) {
     46         mStatusBarWindow = statusBarWindow;
     47         mScrimBehind = (ScrimView) statusBarWindow.findViewById(R.id.scrim_behind);
     48         mBrightnessMirror = statusBarWindow.findViewById(R.id.brightness_mirror);
     49         mNotificationPanel = statusBarWindow.findViewById(R.id.notification_panel);
     50         mStackScroller = (NotificationStackScrollLayout) statusBarWindow.findViewById(
     51                 R.id.notification_stack_scroller);
     52     }
     53 
     54     public void showMirror() {
     55         mBrightnessMirror.setVisibility(View.VISIBLE);
     56         mStackScroller.setFadingOut(true);
     57         mScrimBehind.animateViewAlpha(0.0f, TRANSITION_DURATION_OUT, Interpolators.ALPHA_OUT);
     58         outAnimation(mNotificationPanel.animate())
     59                 .withLayer();
     60     }
     61 
     62     public void hideMirror() {
     63         mScrimBehind.animateViewAlpha(1.0f, TRANSITION_DURATION_IN, Interpolators.ALPHA_IN);
     64         inAnimation(mNotificationPanel.animate())
     65                 .withLayer()
     66                 .withEndAction(new Runnable() {
     67                     @Override
     68                     public void run() {
     69                         mBrightnessMirror.setVisibility(View.INVISIBLE);
     70                         mStackScroller.setFadingOut(false);
     71                     }
     72                 });
     73     }
     74 
     75     private ViewPropertyAnimator outAnimation(ViewPropertyAnimator a) {
     76         return a.alpha(0.0f)
     77                 .setDuration(TRANSITION_DURATION_OUT)
     78                 .setInterpolator(Interpolators.ALPHA_OUT)
     79                 .withEndAction(null);
     80     }
     81     private ViewPropertyAnimator inAnimation(ViewPropertyAnimator a) {
     82         return a.alpha(1.0f)
     83                 .setDuration(TRANSITION_DURATION_IN)
     84                 .setInterpolator(Interpolators.ALPHA_IN);
     85     }
     86 
     87 
     88     public void setLocation(View original) {
     89         original.getLocationInWindow(mInt2Cache);
     90 
     91         // Original is slightly larger than the mirror, so make sure to use the center for the
     92         // positioning.
     93         int originalX = mInt2Cache[0] + original.getWidth() / 2;
     94         int originalY = mInt2Cache[1] + original.getHeight() / 2;
     95         mBrightnessMirror.setTranslationX(0);
     96         mBrightnessMirror.setTranslationY(0);
     97         mBrightnessMirror.getLocationInWindow(mInt2Cache);
     98         int mirrorX = mInt2Cache[0] + mBrightnessMirror.getWidth() / 2;
     99         int mirrorY = mInt2Cache[1] + mBrightnessMirror.getHeight() / 2;
    100         mBrightnessMirror.setTranslationX(originalX - mirrorX);
    101         mBrightnessMirror.setTranslationY(originalY - mirrorY);
    102     }
    103 
    104     public View getMirror() {
    105         return mBrightnessMirror;
    106     }
    107 
    108     public void updateResources() {
    109         FrameLayout.LayoutParams lp =
    110                 (FrameLayout.LayoutParams) mBrightnessMirror.getLayoutParams();
    111         lp.width = mBrightnessMirror.getResources().getDimensionPixelSize(
    112                 R.dimen.notification_panel_width);
    113         lp.gravity = mBrightnessMirror.getResources().getInteger(
    114                 R.integer.notification_panel_layout_gravity);
    115         mBrightnessMirror.setLayoutParams(lp);
    116     }
    117 
    118     public void onDensityOrFontScaleChanged() {
    119         int index = mStatusBarWindow.indexOfChild(mBrightnessMirror);
    120         mStatusBarWindow.removeView(mBrightnessMirror);
    121         mBrightnessMirror = LayoutInflater.from(mBrightnessMirror.getContext()).inflate(
    122                 R.layout.brightness_mirror, mStatusBarWindow, false);
    123         mStatusBarWindow.addView(mBrightnessMirror, index);
    124     }
    125 }
    126