| /* |
| * Copyright (C) 2006 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 android.widget; |
| |
| import android.content.Context; |
| import android.content.res.Resources; |
| import android.database.ContentObserver; |
| import android.os.Handler; |
| import android.os.SystemClock; |
| import android.provider.Settings; |
| import android.text.format.DateFormat; |
| import android.util.AttributeSet; |
| |
| import java.util.Calendar; |
| |
| /** |
| * Like AnalogClock, but digital. Shows seconds. |
| * |
| * FIXME: implement separate views for hours/minutes/seconds, so |
| * proportional fonts don't shake rendering |
| */ |
| |
| public class DigitalClock extends TextView { |
| |
| Calendar mCalendar; |
| private final static String m12 = "h:mm:ss aa"; |
| private final static String m24 = "k:mm:ss"; |
| private FormatChangeObserver mFormatChangeObserver; |
| |
| private Runnable mTicker; |
| private Handler mHandler; |
| |
| private boolean mTickerStopped = false; |
| |
| String mFormat; |
| |
| public DigitalClock(Context context) { |
| super(context); |
| initClock(context); |
| } |
| |
| public DigitalClock(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| initClock(context); |
| } |
| |
| private void initClock(Context context) { |
| Resources r = mContext.getResources(); |
| |
| if (mCalendar == null) { |
| mCalendar = Calendar.getInstance(); |
| } |
| |
| mFormatChangeObserver = new FormatChangeObserver(); |
| getContext().getContentResolver().registerContentObserver( |
| Settings.System.CONTENT_URI, true, mFormatChangeObserver); |
| |
| setFormat(); |
| } |
| |
| @Override |
| protected void onAttachedToWindow() { |
| mTickerStopped = false; |
| super.onAttachedToWindow(); |
| mHandler = new Handler(); |
| |
| /** |
| * requests a tick on the next hard-second boundary |
| */ |
| mTicker = new Runnable() { |
| public void run() { |
| if (mTickerStopped) return; |
| mCalendar.setTimeInMillis(System.currentTimeMillis()); |
| setText(DateFormat.format(mFormat, mCalendar)); |
| invalidate(); |
| long now = SystemClock.uptimeMillis(); |
| long next = now + (1000 - now % 1000); |
| mHandler.postAtTime(mTicker, next); |
| } |
| }; |
| mTicker.run(); |
| } |
| |
| @Override |
| protected void onDetachedFromWindow() { |
| super.onDetachedFromWindow(); |
| mTickerStopped = true; |
| } |
| |
| /** |
| * Pulls 12/24 mode from system settings |
| */ |
| private boolean get24HourMode() { |
| return android.text.format.DateFormat.is24HourFormat(getContext()); |
| } |
| |
| private void setFormat() { |
| if (get24HourMode()) { |
| mFormat = m24; |
| } else { |
| mFormat = m12; |
| } |
| } |
| |
| private class FormatChangeObserver extends ContentObserver { |
| public FormatChangeObserver() { |
| super(new Handler()); |
| } |
| |
| @Override |
| public void onChange(boolean selfChange) { |
| setFormat(); |
| } |
| } |
| } |