1 /*
2  * Copyright (C) 2013 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.documentsui;
18 
19 import android.content.Context;
20 import android.util.AttributeSet;
21 import android.widget.FrameLayout;
22 
23 public class DirectoryView extends FrameLayout {
24     private float mPosition = 0f;
25 
26     private int mWidth;
27 
DirectoryView(Context context)28     public DirectoryView(Context context) {
29         super(context);
30     }
31 
DirectoryView(Context context, AttributeSet attrs)32     public DirectoryView(Context context, AttributeSet attrs) {
33         super(context, attrs);
34     }
35 
36     @Override
onSizeChanged(int w, int h, int oldw, int oldh)37     protected void onSizeChanged(int w, int h, int oldw, int oldh) {
38         super.onSizeChanged(w, h, oldw, oldh);
39         mWidth = w;
40         setPosition(mPosition);
41     }
42 
getPosition()43     public float getPosition() {
44         return mPosition;
45     }
46 
setPosition(float position)47     public void setPosition(float position) {
48         mPosition = position;
49         setX((mWidth > 0) ? (mPosition * mWidth) : 0);
50 
51         if (mPosition != 0) {
52             setTranslationZ(getResources().getDimensionPixelSize(R.dimen.dir_elevation));
53         } else {
54             setTranslationZ(0);
55         }
56     }
57 }
58