1 /*
2  * Copyright (C) 2014 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.tv.settings.widget;
18 
19 import android.view.View;
20 
21 /**
22  * The adapter can optionally implement ScrollAdapterCustomSize in addition to ScrollAdapter.
23  * This class is used as same purpose of attribute "selectedSize" of ScrollAdapterView but
24  * can handle complicated size (e.g. the size of focused item is not same)
25  */
26 public interface ScrollAdapterCustomSize extends ScrollAdapter {
27 
28     /**
29      * return in pixels space when an item is in selected state.
30      * For example,  the app may set a focused item to take 120 pixels comparing to
31      * 100pixels of unfocused one.  ScrollAdapterView will assign more or less
32      * space to the focused item and animate the growing/shrinking.<p>
33      * NOTE: {@link ScrollAdapterView} does not actually scale the View or change
34      * it's width or height,  the view itself is responsible doing the scale in
35      * {@link ScrollAdapterTransform} or {@link ScrollAdapterView.OnScrollListener}
36      */
getSelectItemSize(int adapterIndex, View view)37     int getSelectItemSize(int adapterIndex, View view);
38 
39 }
40