1 /*
2  * Copyright (C) 2015 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.stackdivider;
18 
19 import android.content.Context;
20 import android.graphics.PixelFormat;
21 import android.view.View;
22 import android.view.WindowManager;
23 
24 import static android.view.WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
25 import static android.view.WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;
26 import static android.view.WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL;
27 import static android.view.WindowManager.LayoutParams.FLAG_SLIPPERY;
28 import static android.view.WindowManager.LayoutParams.FLAG_SPLIT_TOUCH;
29 import static android.view.WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH;
30 import static android.view.WindowManager.LayoutParams.PRIVATE_FLAG_NO_MOVE_ANIMATION;
31 import static android.view.WindowManager.LayoutParams.TYPE_DOCK_DIVIDER;
32 
33 /**
34  * Manages the window parameters of the docked stack divider.
35  */
36 public class DividerWindowManager {
37 
38     private static final String WINDOW_TITLE = "DockedStackDivider";
39 
40     private final WindowManager mWindowManager;
41     private WindowManager.LayoutParams mLp;
42     private View mView;
43 
DividerWindowManager(Context ctx)44     public DividerWindowManager(Context ctx) {
45         mWindowManager = ctx.getSystemService(WindowManager.class);
46     }
47 
add(View view, int width, int height)48     public void add(View view, int width, int height) {
49         mLp = new WindowManager.LayoutParams(
50                 width, height, TYPE_DOCK_DIVIDER,
51                 FLAG_NOT_FOCUSABLE | FLAG_NOT_TOUCH_MODAL
52                         | FLAG_WATCH_OUTSIDE_TOUCH | FLAG_SPLIT_TOUCH | FLAG_SLIPPERY,
53                 PixelFormat.TRANSLUCENT);
54         mLp.setTitle(WINDOW_TITLE);
55         mLp.privateFlags |= PRIVATE_FLAG_NO_MOVE_ANIMATION;
56         view.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
57                 | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
58                 | View.SYSTEM_UI_FLAG_LAYOUT_STABLE);
59         mWindowManager.addView(view, mLp);
60         mView = view;
61     }
62 
remove()63     public void remove() {
64         if (mView != null) {
65             mWindowManager.removeView(mView);
66         }
67         mView = null;
68     }
69 
setSlippery(boolean slippery)70     public void setSlippery(boolean slippery) {
71         boolean changed = false;
72         if (slippery && (mLp.flags & FLAG_SLIPPERY) == 0) {
73             mLp.flags |= FLAG_SLIPPERY;
74             changed = true;
75         } else if (!slippery && (mLp.flags & FLAG_SLIPPERY) != 0) {
76             mLp.flags &= ~FLAG_SLIPPERY;
77             changed = true;
78         }
79         if (changed) {
80             mWindowManager.updateViewLayout(mView, mLp);
81         }
82     }
83 
setTouchable(boolean touchable)84     public void setTouchable(boolean touchable) {
85         boolean changed = false;
86         if (!touchable && (mLp.flags & FLAG_NOT_TOUCHABLE) == 0) {
87             mLp.flags |= FLAG_NOT_TOUCHABLE;
88             changed = true;
89         } else if (touchable && (mLp.flags & FLAG_NOT_TOUCHABLE) != 0) {
90             mLp.flags &= ~FLAG_NOT_TOUCHABLE;
91             changed = true;
92         }
93         if (changed) {
94             mWindowManager.updateViewLayout(mView, mLp);
95         }
96     }
97 }
98