StatusBarWindowManager.java revision 5fd4d05aae4b8b0dc1d1b21a206e218f47b0ea3a 
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        mLp.flags |= WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED;
82        mLp.gravity = Gravity.TOP;
83        mLp.softInputMode = WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE;
84        mLp.setTitle("StatusBar");
85        mLp.packageName = mContext.getPackageName();
86        mStatusBarView = statusBarView;
87        mBarHeight = barHeight;
88        mWindowManager.addView(mStatusBarView, mLp);
89    }
90
91    private void applyKeyguardFlags(State state) {
92        if (state.keyguardShowing) {
93            mLp.flags |= WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER;
94            mLp.privateFlags |= WindowManager.LayoutParams.PRIVATE_FLAG_KEYGUARD;
95        } else {
96            mLp.flags &= ~WindowManager.LayoutParams.FLAG_SHOW_WALLPAPER;
97            mLp.privateFlags &= ~WindowManager.LayoutParams.PRIVATE_FLAG_KEYGUARD;
98        }
99    }
100
101    private void adjustScreenOrientation(State state) {
102        if (state.isKeyguardShowingAndNotOccluded()) {
103            if (mKeyguardScreenRotation) {
104                mLp.screenOrientation = ActivityInfo.SCREEN_ORIENTATION_USER;
105            } else {
106                mLp.screenOrientation = ActivityInfo.SCREEN_ORIENTATION_NOSENSOR;
107            }
108        } else {
109            mLp.screenOrientation = ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED;
110        }
111    }
112
113    private void applyFocusableFlag(State state) {
114        if (state.isKeyguardShowingAndNotOccluded() && state.keyguardNeedsInput
115                && state.bouncerShowing) {
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                && state.statusBarState == StatusBarState.KEYGUARD) {
152            mLp.inputFeatures |= WindowManager.LayoutParams.INPUT_FEATURE_DISABLE_USER_ACTIVITY;
153        } else {
154            mLp.inputFeatures &= ~WindowManager.LayoutParams.INPUT_FEATURE_DISABLE_USER_ACTIVITY;
155        }
156    }
157
158    private void apply(State state) {
159        applyKeyguardFlags(state);
160        applyFocusableFlag(state);
161        adjustScreenOrientation(state);
162        applyHeight(state);
163        applyUserActivityTimeout(state);
164        applyInputFeatures(state);
165        applyFitsSystemWindows(state);
166        mWindowManager.updateViewLayout(mStatusBarView, mLp);
167    }
168
169    public void setKeyguardShowing(boolean showing) {
170        mCurrentState.keyguardShowing = showing;
171        apply(mCurrentState);
172    }
173
174    public void setKeyguardOccluded(boolean occluded) {
175        mCurrentState.keyguardOccluded = occluded;
176        apply(mCurrentState);
177    }
178
179    public void setKeyguardNeedsInput(boolean needsInput) {
180        mCurrentState.keyguardNeedsInput = needsInput;
181        apply(mCurrentState);
182    }
183
184    public void setStatusBarExpanded(boolean expanded) {
185        mCurrentState.statusBarExpanded = expanded;
186        mCurrentState.statusBarFocusable = expanded;
187        apply(mCurrentState);
188    }
189
190    public void setStatusBarFocusable(boolean focusable) {
191        mCurrentState.statusBarFocusable = focusable;
192        apply(mCurrentState);
193    }
194
195    public void setKeyguardUserActivityTimeout(long timeout) {
196        mCurrentState.keyguardUserActivityTimeout = timeout;
197        apply(mCurrentState);
198    }
199
200    public void setBouncerShowing(boolean showing) {
201        mCurrentState.bouncerShowing = showing;
202        apply(mCurrentState);
203    }
204
205    /**
206     * @param state The {@link StatusBarState} of the status bar.
207     */
208    public void setStatusBarState(int state) {
209        mCurrentState.statusBarState = state;
210        apply(mCurrentState);
211    }
212
213    private static class State {
214        boolean keyguardShowing;
215        boolean keyguardOccluded;
216        boolean keyguardNeedsInput;
217        boolean statusBarExpanded;
218        boolean statusBarFocusable;
219        long keyguardUserActivityTimeout;
220        boolean bouncerShowing;
221
222        /**
223         * The {@link BaseStatusBar} state from the status bar.
224         */
225        int statusBarState;
226
227        private boolean isKeyguardShowingAndNotOccluded() {
228            return keyguardShowing && !keyguardOccluded;
229        }
230    }
231}
232