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      1 /*
      2  * Copyright (C) 2009 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.effectstest;
     18 
     19 import android.os.Bundle;
     20 import android.util.Log;
     21 import android.widget.TextView;
     22 import android.widget.SeekBar;
     23 
     24 
     25 abstract class EffectParameter implements SeekBar.OnSeekBarChangeListener {
     26 
     27     private final static String TAG = "EffectParameter";
     28 
     29     protected int mMin;
     30     protected int mMax;
     31     protected String mUnit;
     32     protected SeekBar mSeekBar;
     33     protected TextView mValueText;
     34 
     35     public EffectParameter (int min, int max, SeekBar seekBar, TextView textView, String unit) {
     36         mMin = min;
     37         mMax = max;
     38         mSeekBar = seekBar;
     39         mValueText = textView;
     40         mUnit = unit;
     41         byte[] paramBuf = new byte[4];
     42 
     43         mSeekBar.setMax(max-min);
     44     }
     45 
     46     public void displayValue(int value, boolean fromTouch) {
     47         String text = Integer.toString(value)+" "+mUnit;
     48         mValueText.setText(text);
     49         if (!fromTouch) {
     50             mSeekBar.setProgress(value - mMin);
     51         }
     52     }
     53 
     54     public void updateDisplay() {
     55         displayValue(getParameter(), false);
     56     }
     57 
     58     public abstract void setParameter(Integer value);
     59 
     60     public abstract Integer getParameter();
     61 
     62     public abstract void setEffect(Object effect);
     63 
     64     // SeekBar.OnSeekBarChangeListener
     65     public void onProgressChanged(SeekBar seekBar, int progress, boolean fromTouch) {
     66 
     67         if (seekBar != mSeekBar) {
     68             Log.e(TAG, "onProgressChanged called with wrong seekBar");
     69             return;
     70         }
     71 
     72         int value = progress + mMin;
     73         if (fromTouch) {
     74             setParameter(value);
     75         }
     76 
     77         displayValue(getParameter(), fromTouch);
     78     }
     79 
     80     public void onStartTrackingTouch(SeekBar seekBar) {
     81     }
     82 
     83     public void onStopTrackingTouch(SeekBar seekBar) {
     84     }
     85 
     86     public void setEnabled(boolean e) {
     87         mSeekBar.setEnabled(e);
     88     }
     89 }
     90