1 /* 2 * Copyright 2019 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.mobileer.oboetester; 18 19 import android.content.Context; 20 import android.util.AttributeSet; 21 import android.view.LayoutInflater; 22 import android.widget.LinearLayout; 23 import android.widget.SeekBar; 24 import android.widget.TextView; 25 26 import java.util.Locale; 27 28 public class WorkloadView extends LinearLayout { 29 30 protected static final int FADER_PROGRESS_MAX = 1000; // must match layout 31 protected TextView mTextView; 32 protected SeekBar mSeekBar; 33 34 private String mLabel = "Workload"; 35 protected ExponentialTaper mExponentialTaper; 36 37 public interface WorkloadReceiver { setWorkload(int workload)38 void setWorkload(int workload); 39 } 40 41 WorkloadReceiver mWorkloadReceiver; 42 43 private SeekBar.OnSeekBarChangeListener mChangeListener = new SeekBar.OnSeekBarChangeListener() { 44 @Override 45 public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { 46 setValueByPosition(progress); 47 } 48 49 @Override 50 public void onStartTrackingTouch(SeekBar seekBar) { 51 } 52 53 @Override 54 public void onStopTrackingTouch(SeekBar seekBar) { 55 } 56 }; 57 WorkloadView(Context context)58 public WorkloadView(Context context) { 59 super(context); 60 initializeViews(context); 61 } 62 WorkloadView(Context context, AttributeSet attrs)63 public WorkloadView(Context context, AttributeSet attrs) { 64 super(context, attrs); 65 initializeViews(context); 66 } 67 WorkloadView(Context context, AttributeSet attrs, int defStyle)68 public WorkloadView(Context context, 69 AttributeSet attrs, 70 int defStyle) { 71 super(context, attrs, defStyle); 72 initializeViews(context); 73 } 74 setWorkloadReceiver(WorkloadReceiver workloadReceiver)75 public void setWorkloadReceiver(WorkloadReceiver workloadReceiver) { 76 mWorkloadReceiver = workloadReceiver; 77 } 78 setFaderNormalizedProgress(double fraction)79 void setFaderNormalizedProgress(double fraction) { 80 mSeekBar.setProgress((int)(fraction * FADER_PROGRESS_MAX)); 81 } 82 83 /** 84 * Inflates the views in the layout. 85 * 86 * @param context 87 * the current context for the view. 88 */ initializeViews(Context context)89 private void initializeViews(Context context) { 90 LayoutInflater inflater = (LayoutInflater) context 91 .getSystemService(Context.LAYOUT_INFLATER_SERVICE); 92 inflater.inflate(R.layout.workload_view, this); 93 94 mTextView = (TextView) findViewById(R.id.textWorkload); 95 mSeekBar = (SeekBar) findViewById(R.id.faderWorkload); 96 mSeekBar.setOnSeekBarChangeListener(mChangeListener); 97 setRange(0.0, 100.0); 98 //mSeekBar.setProgress(0); 99 } 100 setRange(double dMin, double dMax)101 void setRange(double dMin, double dMax) { 102 mExponentialTaper = new ExponentialTaper(dMin, dMax, 10.0); 103 } 104 setValueByPosition(int progress)105 private void setValueByPosition(int progress) { 106 int workload = (int) mExponentialTaper.linearToExponential( 107 ((double)progress) / FADER_PROGRESS_MAX); 108 if (mWorkloadReceiver != null) { 109 mWorkloadReceiver.setWorkload(workload); 110 } 111 mTextView.setText(getLabel() + " = " + String.format(Locale.getDefault(), "%3d", workload)); 112 } 113 114 @Override setEnabled(boolean enabled)115 public void setEnabled(boolean enabled) { 116 super.setEnabled(enabled); 117 mSeekBar.setEnabled(enabled); 118 } 119 getLabel()120 public String getLabel() { 121 return mLabel; 122 } 123 setLabel(String label)124 public void setLabel(String label) { 125 this.mLabel = label; 126 } 127 } 128