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      1 /*
      2  * Copyright (C) 2012 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 
     17 package com.android.keyguard;
     18 
     19 import android.content.Context;
     20 import android.content.res.TypedArray;
     21 import android.os.PowerManager;
     22 import android.os.SystemClock;
     23 import android.util.AttributeSet;
     24 import android.view.HapticFeedbackConstants;
     25 import android.view.LayoutInflater;
     26 import android.view.MotionEvent;
     27 import android.view.View;
     28 import android.view.ViewGroup;
     29 import android.widget.TextView;
     30 
     31 import com.android.internal.widget.LockPatternUtils;
     32 
     33 public class NumPadKey extends ViewGroup {
     34     // list of "ABC", etc per digit, starting with '0'
     35     static String sKlondike[];
     36 
     37     private int mDigit = -1;
     38     private int mTextViewResId;
     39     private PasswordTextView mTextView;
     40     private TextView mDigitText;
     41     private TextView mKlondikeText;
     42     private boolean mEnableHaptics;
     43     private PowerManager mPM;
     44 
     45     private View.OnClickListener mListener = new View.OnClickListener() {
     46         @Override
     47         public void onClick(View thisView) {
     48             if (mTextView == null && mTextViewResId > 0) {
     49                 final View v = NumPadKey.this.getRootView().findViewById(mTextViewResId);
     50                 if (v != null && v instanceof PasswordTextView) {
     51                     mTextView = (PasswordTextView) v;
     52                 }
     53             }
     54             if (mTextView != null && mTextView.isEnabled()) {
     55                 mTextView.append(Character.forDigit(mDigit, 10));
     56             }
     57             userActivity();
     58         }
     59     };
     60 
     61     public void userActivity() {
     62         mPM.userActivity(SystemClock.uptimeMillis(), false);
     63     }
     64 
     65     public NumPadKey(Context context) {
     66         this(context, null);
     67     }
     68 
     69     public NumPadKey(Context context, AttributeSet attrs) {
     70         this(context, attrs, 0);
     71     }
     72 
     73     public NumPadKey(Context context, AttributeSet attrs, int defStyle) {
     74         this(context, attrs, defStyle, R.layout.keyguard_num_pad_key);
     75     }
     76 
     77     protected NumPadKey(Context context, AttributeSet attrs, int defStyle, int contentResource) {
     78         super(context, attrs, defStyle);
     79         setFocusable(true);
     80 
     81         TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.NumPadKey);
     82 
     83         try {
     84             mDigit = a.getInt(R.styleable.NumPadKey_digit, mDigit);
     85             mTextViewResId = a.getResourceId(R.styleable.NumPadKey_textView, 0);
     86         } finally {
     87             a.recycle();
     88         }
     89 
     90         setOnClickListener(mListener);
     91         setOnHoverListener(new LiftToActivateListener(context));
     92 
     93         mEnableHaptics = new LockPatternUtils(context).isTactileFeedbackEnabled();
     94 
     95         mPM = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE);
     96         LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(
     97                 Context.LAYOUT_INFLATER_SERVICE);
     98         inflater.inflate(contentResource, this, true);
     99 
    100         mDigitText = (TextView) findViewById(R.id.digit_text);
    101         mDigitText.setText(Integer.toString(mDigit));
    102         mKlondikeText = (TextView) findViewById(R.id.klondike_text);
    103 
    104         if (mDigit >= 0) {
    105             if (sKlondike == null) {
    106                 sKlondike = getResources().getStringArray(R.array.lockscreen_num_pad_klondike);
    107             }
    108             if (sKlondike != null && sKlondike.length > mDigit) {
    109                 String klondike = sKlondike[mDigit];
    110                 final int len = klondike.length();
    111                 if (len > 0) {
    112                     mKlondikeText.setText(klondike);
    113                 } else {
    114                     mKlondikeText.setVisibility(View.INVISIBLE);
    115                 }
    116             }
    117         }
    118 
    119         a = context.obtainStyledAttributes(attrs, android.R.styleable.View);
    120         if (!a.hasValueOrEmpty(android.R.styleable.View_background)) {
    121             setBackground(mContext.getDrawable(R.drawable.ripple_drawable_pin));
    122         }
    123         a.recycle();
    124         setContentDescription(mDigitText.getText().toString());
    125     }
    126 
    127     @Override
    128     public boolean onTouchEvent(MotionEvent event) {
    129         if (event.getActionMasked() == MotionEvent.ACTION_DOWN) {
    130             doHapticKeyClick();
    131         }
    132         return super.onTouchEvent(event);
    133     }
    134 
    135     @Override
    136     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    137         super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    138         measureChildren(widthMeasureSpec, heightMeasureSpec);
    139     }
    140 
    141     @Override
    142     protected void onLayout(boolean changed, int l, int t, int r, int b) {
    143         int digitHeight = mDigitText.getMeasuredHeight();
    144         int klondikeHeight = mKlondikeText.getMeasuredHeight();
    145         int totalHeight = digitHeight + klondikeHeight;
    146         int top = getHeight() / 2 - totalHeight / 2;
    147         int centerX = getWidth() / 2;
    148         int left = centerX - mDigitText.getMeasuredWidth() / 2;
    149         int bottom = top + digitHeight;
    150         mDigitText.layout(left, top, left + mDigitText.getMeasuredWidth(), bottom);
    151         top = (int) (bottom - klondikeHeight * 0.35f);
    152         bottom = top + klondikeHeight;
    153 
    154         left = centerX - mKlondikeText.getMeasuredWidth() / 2;
    155         mKlondikeText.layout(left, top, left + mKlondikeText.getMeasuredWidth(), bottom);
    156     }
    157 
    158     @Override
    159     public boolean hasOverlappingRendering() {
    160         return false;
    161     }
    162 
    163     // Cause a VIRTUAL_KEY vibration
    164     public void doHapticKeyClick() {
    165         if (mEnableHaptics) {
    166             performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY,
    167                     HapticFeedbackConstants.FLAG_IGNORE_VIEW_SETTING
    168                     | HapticFeedbackConstants.FLAG_IGNORE_GLOBAL_SETTING);
    169         }
    170     }
    171 }
    172