| /* |
| * 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.internal.widget; |
| |
| import com.android.internal.R; |
| |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.database.ContentObserver; |
| import android.graphics.Typeface; |
| import android.os.Handler; |
| import android.provider.Settings; |
| import android.text.format.DateFormat; |
| import android.util.AttributeSet; |
| import android.view.View; |
| import android.widget.RelativeLayout; |
| import android.widget.TextView; |
| |
| import java.lang.ref.WeakReference; |
| import java.text.DateFormatSymbols; |
| import java.util.Calendar; |
| |
| /** |
| * Displays the time |
| */ |
| public class DigitalClock extends RelativeLayout { |
| |
| private static final String SYSTEM = "/system/fonts/"; |
| private static final String SYSTEM_FONT_TIME_BACKGROUND = SYSTEM + "AndroidClock.ttf"; |
| private static final String SYSTEM_FONT_TIME_FOREGROUND = SYSTEM + "AndroidClock_Highlight.ttf"; |
| private final static String M12 = "h:mm"; |
| private final static String M24 = "kk:mm"; |
| |
| private Calendar mCalendar; |
| private String mFormat; |
| private TextView mTimeDisplayBackground; |
| private TextView mTimeDisplayForeground; |
| private AmPm mAmPm; |
| private ContentObserver mFormatChangeObserver; |
| private int mAttached = 0; // for debugging - tells us whether attach/detach is unbalanced |
| |
| /* called by system on minute ticks */ |
| private final Handler mHandler = new Handler(); |
| private BroadcastReceiver mIntentReceiver; |
| |
| private static final Typeface sBackgroundFont; |
| private static final Typeface sForegroundFont; |
| |
| static { |
| sBackgroundFont = Typeface.createFromFile(SYSTEM_FONT_TIME_BACKGROUND); |
| sForegroundFont = Typeface.createFromFile(SYSTEM_FONT_TIME_FOREGROUND); |
| } |
| |
| private static class TimeChangedReceiver extends BroadcastReceiver { |
| private WeakReference<DigitalClock> mClock; |
| private Context mContext; |
| |
| public TimeChangedReceiver(DigitalClock clock) { |
| mClock = new WeakReference<DigitalClock>(clock); |
| mContext = clock.getContext(); |
| } |
| |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| // Post a runnable to avoid blocking the broadcast. |
| final boolean timezoneChanged = |
| intent.getAction().equals(Intent.ACTION_TIMEZONE_CHANGED); |
| final DigitalClock clock = mClock.get(); |
| if (clock != null) { |
| clock.mHandler.post(new Runnable() { |
| public void run() { |
| if (timezoneChanged) { |
| clock.mCalendar = Calendar.getInstance(); |
| } |
| clock.updateTime(); |
| } |
| }); |
| } else { |
| try { |
| mContext.unregisterReceiver(this); |
| } catch (RuntimeException e) { |
| // Shouldn't happen |
| } |
| } |
| } |
| }; |
| |
| static class AmPm { |
| private TextView mAmPmTextView; |
| private String mAmString, mPmString; |
| |
| AmPm(View parent, Typeface tf) { |
| // No longer used, uncomment if we decide to use AM/PM indicator again |
| // mAmPmTextView = (TextView) parent.findViewById(R.id.am_pm); |
| if (mAmPmTextView != null && tf != null) { |
| mAmPmTextView.setTypeface(tf); |
| } |
| |
| String[] ampm = new DateFormatSymbols().getAmPmStrings(); |
| mAmString = ampm[0]; |
| mPmString = ampm[1]; |
| } |
| |
| void setShowAmPm(boolean show) { |
| if (mAmPmTextView != null) { |
| mAmPmTextView.setVisibility(show ? View.VISIBLE : View.GONE); |
| } |
| } |
| |
| void setIsMorning(boolean isMorning) { |
| if (mAmPmTextView != null) { |
| mAmPmTextView.setText(isMorning ? mAmString : mPmString); |
| } |
| } |
| } |
| |
| private static class FormatChangeObserver extends ContentObserver { |
| private WeakReference<DigitalClock> mClock; |
| private Context mContext; |
| public FormatChangeObserver(DigitalClock clock) { |
| super(new Handler()); |
| mClock = new WeakReference<DigitalClock>(clock); |
| mContext = clock.getContext(); |
| } |
| @Override |
| public void onChange(boolean selfChange) { |
| DigitalClock digitalClock = mClock.get(); |
| if (digitalClock != null) { |
| digitalClock.setDateFormat(); |
| digitalClock.updateTime(); |
| } else { |
| try { |
| mContext.getContentResolver().unregisterContentObserver(this); |
| } catch (RuntimeException e) { |
| // Shouldn't happen |
| } |
| } |
| } |
| } |
| |
| public DigitalClock(Context context) { |
| this(context, null); |
| } |
| |
| public DigitalClock(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| } |
| |
| @Override |
| protected void onFinishInflate() { |
| super.onFinishInflate(); |
| |
| /* The time display consists of two tones. That's why we have two overlapping text views. */ |
| mTimeDisplayBackground = (TextView) findViewById(R.id.timeDisplayBackground); |
| mTimeDisplayBackground.setTypeface(sBackgroundFont); |
| mTimeDisplayBackground.setVisibility(View.INVISIBLE); |
| |
| mTimeDisplayForeground = (TextView) findViewById(R.id.timeDisplayForeground); |
| mTimeDisplayForeground.setTypeface(sForegroundFont); |
| mAmPm = new AmPm(this, null); |
| mCalendar = Calendar.getInstance(); |
| |
| setDateFormat(); |
| } |
| |
| @Override |
| protected void onAttachedToWindow() { |
| super.onAttachedToWindow(); |
| |
| mAttached++; |
| |
| /* monitor time ticks, time changed, timezone */ |
| if (mIntentReceiver == null) { |
| mIntentReceiver = new TimeChangedReceiver(this); |
| IntentFilter filter = new IntentFilter(); |
| filter.addAction(Intent.ACTION_TIME_TICK); |
| filter.addAction(Intent.ACTION_TIME_CHANGED); |
| filter.addAction(Intent.ACTION_TIMEZONE_CHANGED); |
| mContext.registerReceiver(mIntentReceiver, filter); |
| } |
| |
| /* monitor 12/24-hour display preference */ |
| if (mFormatChangeObserver == null) { |
| mFormatChangeObserver = new FormatChangeObserver(this); |
| mContext.getContentResolver().registerContentObserver( |
| Settings.System.CONTENT_URI, true, mFormatChangeObserver); |
| } |
| |
| updateTime(); |
| } |
| |
| @Override |
| protected void onDetachedFromWindow() { |
| super.onDetachedFromWindow(); |
| |
| mAttached--; |
| |
| if (mIntentReceiver != null) { |
| mContext.unregisterReceiver(mIntentReceiver); |
| } |
| if (mFormatChangeObserver != null) { |
| mContext.getContentResolver().unregisterContentObserver( |
| mFormatChangeObserver); |
| } |
| |
| mFormatChangeObserver = null; |
| mIntentReceiver = null; |
| } |
| |
| void updateTime(Calendar c) { |
| mCalendar = c; |
| updateTime(); |
| } |
| |
| public void updateTime() { |
| mCalendar.setTimeInMillis(System.currentTimeMillis()); |
| |
| CharSequence newTime = DateFormat.format(mFormat, mCalendar); |
| mTimeDisplayBackground.setText(newTime); |
| mTimeDisplayForeground.setText(newTime); |
| mAmPm.setIsMorning(mCalendar.get(Calendar.AM_PM) == 0); |
| } |
| |
| private void setDateFormat() { |
| mFormat = android.text.format.DateFormat.is24HourFormat(getContext()) |
| ? M24 : M12; |
| mAmPm.setShowAmPm(mFormat.equals(M12)); |
| } |
| } |