PhoneStatusBarView.java revision a4b7f2f75e7803193429ec1179fb5e2eb1c6fbda 
1/*
2 * Copyright (C) 2008 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.res.Configuration;
21import android.graphics.Canvas;
22import android.graphics.Rect;
23import android.os.SystemClock;
24import android.util.AttributeSet;
25import android.util.Log;
26import android.view.KeyEvent;
27import android.view.MotionEvent;
28import android.view.View;
29import android.view.ViewGroup;
30import android.view.ViewParent;
31import android.view.accessibility.AccessibilityEvent;
32import android.widget.FrameLayout;
33
34import com.android.systemui.R;
35import com.android.systemui.statusbar.BaseStatusBar;
36import com.android.systemui.statusbar.policy.FixedSizeDrawable;
37
38public class PhoneStatusBarView extends FrameLayout {
39    private static final String TAG = "PhoneStatusBarView";
40
41    static final int DIM_ANIM_TIME = 400;
42
43    PhoneStatusBar mService;
44    boolean mTracking;
45    int mStartX, mStartY;
46    ViewGroup mNotificationIcons;
47    ViewGroup mStatusIcons;
48
49    boolean mNightMode = false;
50    int mStartAlpha = 0, mEndAlpha = 0;
51    long mEndTime = 0;
52
53    Rect mButtonBounds = new Rect();
54    boolean mCapturingEvents = true;
55
56    public PhoneStatusBarView(Context context, AttributeSet attrs) {
57        super(context, attrs);
58    }
59
60    @Override
61    protected void onFinishInflate() {
62        super.onFinishInflate();
63        mNotificationIcons = (ViewGroup)findViewById(R.id.notificationIcons);
64        mStatusIcons = (ViewGroup)findViewById(R.id.statusIcons);
65    }
66
67    @Override
68    protected void onAttachedToWindow() {
69        super.onAttachedToWindow();
70        //mService.onBarViewAttached();
71    }
72
73    @Override
74    protected void onConfigurationChanged(Configuration newConfig) {
75        super.onConfigurationChanged(newConfig);
76        mService.updateDisplaySize();
77        boolean nightMode = (newConfig.uiMode & Configuration.UI_MODE_NIGHT_MASK)
78                == Configuration.UI_MODE_NIGHT_YES;
79        if (mNightMode != nightMode) {
80            mNightMode = nightMode;
81            mStartAlpha = getCurAlpha();
82            mEndAlpha = mNightMode ? 0x80 : 0x00;
83            mEndTime = SystemClock.uptimeMillis() + DIM_ANIM_TIME;
84            invalidate();
85        }
86    }
87
88    int getCurAlpha() {
89        long time = SystemClock.uptimeMillis();
90        if (time > mEndTime) {
91            return mEndAlpha;
92        }
93        return mEndAlpha
94                - (int)(((mEndAlpha-mStartAlpha) * (mEndTime-time) / DIM_ANIM_TIME));
95    }
96
97    @Override
98    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
99        super.onSizeChanged(w, h, oldw, oldh);
100        mService.updateExpandedViewPos(BaseStatusBar.EXPANDED_LEAVE_ALONE);
101    }
102
103    @Override
104    protected void onLayout(boolean changed, int l, int t, int r, int b) {
105        super.onLayout(changed, l, t, r, b);
106    }
107
108    @Override
109    protected void dispatchDraw(Canvas canvas) {
110        super.dispatchDraw(canvas);
111        int alpha = getCurAlpha();
112        if (alpha != 0) {
113            canvas.drawARGB(alpha, 0, 0, 0);
114        }
115        if (alpha != mEndAlpha) {
116            invalidate();
117        }
118    }
119
120    /**
121     * Gets the left position of v in this view.  Throws if v is not
122     * a child of this.
123     */
124    private int getViewOffset(View v) {
125        int offset = 0;
126        while (v != this) {
127            offset += v.getLeft();
128            ViewParent p = v.getParent();
129            if (v instanceof View) {
130                v = (View)p;
131            } else {
132                throw new RuntimeException(v + " is not a child of " + this);
133            }
134        }
135        return offset;
136    }
137
138    /**
139     * Ensure that, if there is no target under us to receive the touch,
140     * that we process it ourself.  This makes sure that onInterceptTouchEvent()
141     * is always called for the entire gesture.
142     */
143    @Override
144    public boolean onTouchEvent(MotionEvent event) {
145        if (!mCapturingEvents) {
146            return false;
147        }
148        if (event.getAction() != MotionEvent.ACTION_DOWN) {
149            mService.interceptTouchEvent(event);
150        }
151        return true;
152    }
153
154    @Override
155    public boolean onInterceptTouchEvent(MotionEvent event) {
156        if (event.getAction() == MotionEvent.ACTION_DOWN) {
157            if (mButtonBounds.contains((int)event.getX(), (int)event.getY())) {
158                mCapturingEvents = false;
159                return false;
160            }
161        }
162        mCapturingEvents = true;
163        return mService.interceptTouchEvent(event)
164                ? true : super.onInterceptTouchEvent(event);
165    }
166
167    @Override
168    public boolean onRequestSendAccessibilityEvent(View child, AccessibilityEvent event) {
169        if (super.onRequestSendAccessibilityEvent(child, event)) {
170            // The status bar is very small so augment the view that the user is touching
171            // with the content of the status bar a whole. This way an accessibility service
172            // may announce the current item as well as the entire content if appropriate.
173            AccessibilityEvent record = AccessibilityEvent.obtain();
174            onInitializeAccessibilityEvent(record);
175            dispatchPopulateAccessibilityEvent(record);
176            event.appendRecord(record);
177            return true;
178        }
179        return false;
180    }
181}
182