1 /* 2 * Copyright (C) 2020 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.emergency.widgets.slider; 18 19 import android.content.Context; 20 import android.content.res.TypedArray; 21 import android.util.AttributeSet; 22 import android.view.View; 23 import android.widget.FrameLayout; 24 import android.widget.SeekBar; 25 import android.widget.TextView; 26 27 import com.android.emergency.R; 28 29 /** 30 * A slider button. User can slide the thumb/scrim from one end to the other end to activate the 31 * button. 32 */ 33 public final class SliderView extends FrameLayout 34 implements SeekBar.OnSeekBarChangeListener { 35 36 private SliderSeekBar mSliderSeekBar; 37 private View mSliderTextContainer; 38 private TextView mSliderTextView; 39 SliderView(Context context)40 public SliderView(Context context) { 41 super(context); 42 init(null, 0); 43 } 44 SliderView(Context context, AttributeSet attrs)45 public SliderView(Context context, AttributeSet attrs) { 46 super(context, attrs); 47 init(attrs, 0); 48 } 49 SliderView(Context context, AttributeSet attrs, int defStyleAttr)50 public SliderView(Context context, AttributeSet attrs, int defStyleAttr) { 51 super(context, attrs, defStyleAttr); 52 init(attrs, defStyleAttr); 53 } 54 SliderView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes)55 public SliderView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { 56 super(context, attrs, defStyleAttr, defStyleRes); 57 init(attrs, defStyleAttr); 58 } 59 init(AttributeSet attrs, int defStyle)60 private void init(AttributeSet attrs, int defStyle) { 61 inflate(getContext(), R.layout.slider_view, this); 62 mSliderTextView = findViewById(android.R.id.title); 63 mSliderSeekBar = findViewById(R.id.slider_seek_bar); 64 mSliderTextContainer = findViewById(R.id.slider_text_container); 65 mSliderSeekBar.setOnSeekBarChangeListener(this); 66 67 String slideText; 68 69 TypedArray a = 70 getContext() 71 .getTheme() 72 .obtainStyledAttributes(attrs, R.styleable.SliderView, defStyle, defStyle); 73 74 slideText = a.getString(R.styleable.SliderView_android_text); 75 76 if (a.hasValue(R.styleable.SliderView_android_thumb)) { 77 // Updating thumb drawable clears the offset. Cache it first. 78 int thumbOffSet = mSliderSeekBar.getThumbOffset(); 79 mSliderSeekBar.setThumb(a.getDrawable(R.styleable.SliderView_android_thumb)); 80 mSliderSeekBar.setThumbOffset(thumbOffSet); 81 } 82 83 setText(slideText); 84 a.recycle(); 85 } 86 setText(CharSequence text)87 public void setText(CharSequence text) { 88 mSliderTextView.setText(text); 89 } 90 setSlideCompleteListener(OnSlideCompleteListener listener)91 public void setSlideCompleteListener(OnSlideCompleteListener listener) { 92 mSliderSeekBar.setOnSlideCompleteListener(listener); 93 } 94 95 @Override onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)96 public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { 97 // Dim text as slider makes progress 98 mSliderTextContainer.setAlpha(1 - (progress / (float) SliderSeekBar.SLIDE_MAX_SLIDE_SCALE)); 99 } 100 101 @Override onStartTrackingTouch(SeekBar seekBar)102 public void onStartTrackingTouch(SeekBar seekBar) { 103 } 104 105 @Override onStopTrackingTouch(SeekBar seekBar)106 public void onStopTrackingTouch(SeekBar seekBar) { 107 } 108 }