StatusBarWindowManager.java revision ecbab3662d4474bbb45477939aaa167eb883212b 
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
17package com.android.systemui.statusbar.phone;
18
19import android.content.Context;
20import android.content.pm.ActivityInfo;
21import android.content.res.Resources;
22import android.graphics.PixelFormat;
23import android.os.SystemProperties;
24import android.view.Gravity;
25import android.view.View;
26import android.view.ViewGroup;
27import android.view.WindowManager;
28
29import com.android.keyguard.R;
30import com.android.systemui.statusbar.BaseStatusBar;
31import com.android.systemui.statusbar.StatusBarState;
32
33/**
34 * Encapsulates all logic for the status bar window state management.
35 */
36public class StatusBarWindowManager {
37
38    private final Context mContext;
39    private final WindowManager mWindowManager;
40    private View mStatusBarView;
41    private WindowManager.LayoutParams mLp;
42    private int mBarHeight;
43    private final boolean mKeyguardScreenRotation;
44
45    private final State mCurrentState = new State();
46
47    public StatusBarWindowManager(Context context) {
48        mContext = context;
49        mWindowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
50        mKeyguardScreenRotation = shouldEnableKeyguardScreenRotation();
51    }
52
53    private boolean shouldEnableKeyguardScreenRotation() {
54        Resources res = mContext.getResources();
55        return SystemProperties.getBoolean("lockscreen.rot_override", false)
56                || res.getBoolean(R.bool.config_enableLockScreenRotation);
57    }
58
59    /**
60     * Adds the status bar view to the window manager.
61     *
62     * @param statusBarView The view to add.
63     * @param barHeight The height of the status bar in collapsed state.
64     */
65    public void add(View statusBarView, int barHeight) {
66
67        // Now that the status bar window encompasses the sliding panel and its
68        // translucent backdrop, the entire thing is made TRANSLUCENT and is
69        // hardware-accelerated.
70        mLp = new WindowManager.LayoutParams(
71                ViewGroup.LayoutParams.MATCH_PARENT,
72                barHeight,
73                WindowManager.LayoutParams.TYPE_STATUS_BAR,
74                WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
75                        | WindowManager.LayoutParams.FLAG_TOUCHABLE_WHEN_WAKING
76                        | WindowManager.LayoutParams.FLAG_SPLIT_TOUCH
77                        | WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH
78                        | WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION
79                        | WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS,
80                PixelFormat.TRANSLUCENT);
81
82        mLp.flags |= WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED;
83        mLp.gravity = Gravity.TOP | Gravity.FILL_HORIZONTAL;
84        mLp.softInputMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE;
85        mLp.setTitle("StatusBar");
86        mLp.packageName = mContext.getPackageName();
87        mStatusBarView = statusBarView;
88        mBarHeight = barHeight;
89        mWindowManager.addView(mStatusBarView, mLp);
90    }
91
92    private void applyKeyguardFlags(State state) {
93        if (state.keyguardShowing) {
94            mLp.flags |= WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER;
95            mLp.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_KEYGUARD;
96        } else {
97            mLp.flags &= ~WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER;
98            mLp.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_KEYGUARD;
99        }
100    }
101
102    private void adjustScreenOrientation(State state) {
103        if (state.isKeyguardShowingAndNotOccluded()) {
104            if (mKeyguardScreenRotation) {
105                mLp.screenOrientation = ActivityInfo.SCREEN_ORIENTATION_USER;
106            } else {
107                mLp.screenOrientation = ActivityInfo.SCREEN_ORIENTATION_NOSENSOR;
108            }
109        } else {
110            mLp.screenOrientation = ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED;
111        }
112    }
113
114    private void applyFocusableFlag(State state) {
115        if (state.isKeyguardShowingAndNotOccluded() && state.keyguardNeedsInput) {
116            mLp.flags &= ~WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
117            mLp.flags &= ~WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM;
118        } else if (state.isKeyguardShowingAndNotOccluded() || state.statusBarFocusable) {
119            mLp.flags &= ~WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
120            mLp.flags |= WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM;
121        } else {
122            mLp.flags |= WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
123            mLp.flags &= ~WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM;
124        }
125    }
126
127    private void applyHeight(State state) {
128        boolean expanded = state.isKeyguardShowingAndNotOccluded() || state.statusBarExpanded;
129        if (expanded) {
130            mLp.height = ViewGroup.LayoutParams.MATCH_PARENT;
131        } else {
132            mLp.height = mBarHeight;
133        }
134    }
135
136    private void applyFitsSystemWindows(State state) {
137        mStatusBarView.setFitsSystemWindows(!state.isKeyguardShowingAndNotOccluded());
138    }
139
140    private void applyUserActivityTimeout(State state) {
141        if (state.isKeyguardShowingAndNotOccluded()
142                && state.statusBarState == StatusBarState.KEYGUARD) {
143            mLp.userActivityTimeout = state.keyguardUserActivityTimeout;
144        } else {
145            mLp.userActivityTimeout = -1;
146        }
147    }
148
149    private void applyInputFeatures(State state) {
150        if (state.isKeyguardShowingAndNotOccluded()) {
151            mLp.inputFeatures |= WindowManager.LayoutParams.INPUT_FEATURE_DISABLE_USER_ACTIVITY;
152        } else {
153            mLp.inputFeatures &= ~WindowManager.LayoutParams.INPUT_FEATURE_DISABLE_USER_ACTIVITY;
154        }
155    }
156
157    private void apply(State state) {
158        applyKeyguardFlags(state);
159        applyFocusableFlag(state);
160        adjustScreenOrientation(state);
161        applyHeight(state);
162        applyUserActivityTimeout(state);
163        applyInputFeatures(state);
164        applyFitsSystemWindows(state);
165        mWindowManager.updateViewLayout(mStatusBarView, mLp);
166    }
167
168    public void setKeyguardShowing(boolean showing) {
169        mCurrentState.keyguardShowing = showing;
170        apply(mCurrentState);
171    }
172
173    public void setKeyguardOccluded(boolean occluded) {
174        mCurrentState.keyguardOccluded = occluded;
175        apply(mCurrentState);
176    }
177
178    public void setKeyguardNeedsInput(boolean needsInput) {
179        mCurrentState.keyguardNeedsInput = needsInput;
180        apply(mCurrentState);
181    }
182
183    public void setStatusBarExpanded(boolean expanded) {
184        mCurrentState.statusBarExpanded = expanded;
185        mCurrentState.statusBarFocusable = expanded;
186        apply(mCurrentState);
187    }
188
189    public void setStatusBarFocusable(boolean focusable) {
190        mCurrentState.statusBarFocusable = focusable;
191        apply(mCurrentState);
192    }
193
194    public void setKeyguardUserActivityTimeout(long timeout) {
195        mCurrentState.keyguardUserActivityTimeout = timeout;
196        apply(mCurrentState);
197    }
198
199    /**
200     * @param state The {@link StatusBarState} of the status bar.
201     */
202    public void setStatusBarState(int state) {
203        mCurrentState.statusBarState = state;
204        apply(mCurrentState);
205    }
206
207    private static class State {
208        boolean keyguardShowing;
209        boolean keyguardOccluded;
210        boolean keyguardNeedsInput;
211        boolean statusBarExpanded;
212        boolean statusBarFocusable;
213        long keyguardUserActivityTimeout;
214
215        /**
216         * The {@link BaseStatusBar} state from the status bar.
217         */
218        int statusBarState;
219
220        private boolean isKeyguardShowingAndNotOccluded() {
221            return keyguardShowing && !keyguardOccluded;
222        }
223    }
224}
225