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
17package com.android.effectstest;
18
19import android.os.Bundle;
20import android.util.Log;
21import android.widget.TextView;
22import android.widget.SeekBar;
23
24
25abstract 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