KeyButtonView.java revision abb27777f4763d057d37a58936232f8e17f57de1 
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.policy;
18
19import android.content.Context;
20import android.content.res.TypedArray;
21import android.graphics.drawable.AnimationDrawable;
22import android.graphics.drawable.Drawable;
23import android.os.RemoteException;
24import android.os.SystemClock;
25import android.os.ServiceManager;
26import android.util.AttributeSet;
27import android.util.Slog;
28import android.view.HapticFeedbackConstants;
29import android.view.IWindowManager;
30import android.view.InputDevice;
31import android.view.KeyEvent;
32import android.view.MotionEvent;
33import android.view.ViewConfiguration;
34import android.widget.ImageView;
35import android.widget.RemoteViews.RemoteView;
36
37import com.android.systemui.R;
38
39public class KeyButtonView extends ImageView {
40    private static final String TAG = "StatusBar.KeyButtonView";
41
42    IWindowManager mWindowManager;
43    long mDownTime;
44    boolean mSending, mLongPressed;
45    int mCode;
46    int mRepeat;
47    Runnable mCheckLongPress = new Runnable() {
48        public void run() {
49            Slog.d("KeyButtonView", "longpress");
50            if (isPressed()) {
51                mLongPressed = true;
52                mRepeat++;
53                sendEvent(KeyEvent.ACTION_DOWN,
54                        KeyEvent.FLAG_FROM_SYSTEM
55                        | KeyEvent.FLAG_VIRTUAL_HARD_KEY
56                        | KeyEvent.FLAG_LONG_PRESS);
57            }
58        }
59    };
60
61    public KeyButtonView(Context context, AttributeSet attrs) {
62        this(context, attrs, 0);
63    }
64
65    public KeyButtonView(Context context, AttributeSet attrs, int defStyle) {
66        super(context, attrs);
67
68        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.KeyButtonView,
69                defStyle, 0);
70
71        mCode = a.getInteger(R.styleable.KeyButtonView_keyCode, 0);
72        if (mCode == 0) {
73            Slog.w(TAG, "KeyButtonView without key code id=0x" + Integer.toHexString(getId()));
74        }
75
76        a.recycle();
77
78        mWindowManager = IWindowManager.Stub.asInterface(
79                ServiceManager.getService(Context.WINDOW_SERVICE));
80    }
81
82    public boolean onTouchEvent(MotionEvent ev) {
83        final int action = ev.getAction();
84        int x, y;
85
86        switch (action) {
87            case MotionEvent.ACTION_DOWN:
88                //Slog.d("KeyButtonView", "press");
89                mDownTime = SystemClock.uptimeMillis();
90                mRepeat = 0;
91                mSending = true;
92                mLongPressed = false;
93                sendEvent(KeyEvent.ACTION_DOWN,
94                        KeyEvent.FLAG_FROM_SYSTEM | KeyEvent.FLAG_VIRTUAL_HARD_KEY, mDownTime);
95                setPressed(true);
96                removeCallbacks(mCheckLongPress);
97                postDelayed(mCheckLongPress, ViewConfiguration.getLongPressTimeout());
98                break;
99            case MotionEvent.ACTION_MOVE:
100                if (mSending) {
101                    x = (int)ev.getX();
102                    y = (int)ev.getY();
103                    setPressed(x >= 0 && x < getWidth() && y >= 0 &&  y < getHeight());
104                }
105                break;
106            case MotionEvent.ACTION_CANCEL:
107                setPressed(false);
108                if (mSending && !mLongPressed) {
109                    mSending = false;
110                    sendEvent(KeyEvent.ACTION_UP,
111                            KeyEvent.FLAG_FROM_SYSTEM | KeyEvent.FLAG_VIRTUAL_HARD_KEY
112                                | KeyEvent.FLAG_CANCELED);
113                    removeCallbacks(mCheckLongPress);
114                }
115                break;
116            case MotionEvent.ACTION_UP:
117                setPressed(false);
118                if (mSending && !mLongPressed) {
119                    mSending = false;
120                    sendEvent(KeyEvent.ACTION_UP,
121                            KeyEvent.FLAG_FROM_SYSTEM | KeyEvent.FLAG_VIRTUAL_HARD_KEY);
122                    removeCallbacks(mCheckLongPress);
123                }
124                break;
125        }
126
127        return true;
128    }
129
130    void sendEvent(int action, int flags) {
131        sendEvent(action, flags, SystemClock.uptimeMillis());
132    }
133
134    void sendEvent(int action, int flags, long when) {
135        final KeyEvent ev = new KeyEvent(mDownTime, when, action, mCode, mRepeat,
136                0, 0, 0, flags, InputDevice.SOURCE_KEYBOARD);
137        try {
138            //Slog.d(TAG, "injecting event " + ev);
139            mWindowManager.injectInputEventNoWait(ev);
140        } catch (RemoteException ex) {
141            // System process is dead
142        }
143    }
144}
145
146
147