Add KeyButtonView

<?xml version="1.0" encoding="utf-8"?>

<!-- Copyright (C) 2010 The Android Open Source Project

     Licensed under the Apache License, Version 2.0 (the "License");

     you may not use this file except in compliance with the License.

     You may obtain a copy of the License at

          http://www.apache.org/licenses/LICENSE-2.0

     Unless required by applicable law or agreed to in writing, software

     distributed under the License is distributed on an "AS IS" BASIS,

     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

     See the License for the specific language governing permissions and

     limitations under the License.

-->

<resources>

    <declare-styleable name="KeyButtonView">

        <attr name="keyCode" format="integer" />

    </declare-styleable>

</resources>

/*

 * Copyright (C) 2008 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.android.systemui.statusbar;

import android.content.Context;

import android.content.res.TypedArray;

import android.graphics.drawable.AnimationDrawable;

import android.graphics.drawable.Drawable;

import android.os.RemoteException;

import android.os.SystemClock;

import android.os.ServiceManager;

import android.util.AttributeSet;

import android.util.Slog;

import android.view.IWindowManager;

import android.view.KeyEvent;

import android.view.MotionEvent;

import android.widget.ImageView;

import android.widget.RemoteViews.RemoteView;

import com.android.systemui.R;

public class KeyButtonView extends ImageView {

    IWindowManager mWindowManager;

    long mDownTime;

    boolean mSending;

    int mCode;

    int mRepeat;

    public KeyButtonView(Context context, AttributeSet attrs) {

        this(context, attrs, 0);

    }

    public KeyButtonView(Context context, AttributeSet attrs, int defStyle) {

        super(context, attrs);

        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.KeyButtonView,

                defStyle, 0);

        mCode = a.getInteger(R.styleable.KeyButtonView_keyCode, 0);

        if (mCode == 0) {

            Slog.w(StatusBarService.TAG, "KeyButtonView without key code id=0x"

                    + Integer.toHexString(getId()));

        }

        a.recycle();

        mWindowManager = IWindowManager.Stub.asInterface(

                ServiceManager.getService(Context.WINDOW_SERVICE));

    }

    public boolean onTouchEvent(MotionEvent ev) {

        final int action = ev.getAction();

        int x, y;

        switch (action) {

            case MotionEvent.ACTION_DOWN:

                mDownTime = SystemClock.uptimeMillis();

                mRepeat = 0;

                mSending = true;

                sendEvent(KeyEvent.ACTION_DOWN, mDownTime);

                break;

            case MotionEvent.ACTION_MOVE:

                if (mSending) {

                    x = (int)ev.getX();

                    y = (int)ev.getY();

                    if (x < 0 || x >= getWidth() || y < 0 || y >= getHeight()) {

                        mSending = false;

                        sendEvent(KeyEvent.ACTION_UP);

                    }

                }

                break;

            case MotionEvent.ACTION_UP:

            case MotionEvent.ACTION_CANCEL:

                if (mSending) {

                    sendEvent(KeyEvent.ACTION_UP);

                    mSending = false;

                }

                break;

        }

        return true;

    }

    void sendEvent(int action) {

        sendEvent(action, SystemClock.uptimeMillis());

    }

    void sendEvent(int action, long when) {

        final KeyEvent ev = new KeyEvent(mDownTime, mDownTime, action, mCode, mRepeat);

        try {

            Slog.d(StatusBarService.TAG, "injecting event " + ev);

            mWindowManager.injectKeyEvent(ev, false);

        } catch (RemoteException ex) {

            // System process is dead

        }

    }

}