FocusHighlight.java revision 739e3805bf2785e6773aede5e2e1643f537305f9 
1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
5 * in compliance with the License. You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software distributed under the License
10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
11 * or implied. See the License for the specific language governing permissions and limitations under
12 * the License.
13 */
14package android.support.v17.leanback.widget;
15
16import android.view.View;
17
18/**
19 * Interface for highlighting the item that has focus.
20 *
21 */
22public interface FocusHighlight {
23    /**
24     * No zoom factor.
25     */
26    public static final int ZOOM_FACTOR_NONE = 0;
27
28    /**
29     * A small zoom factor, recommended for large item views.
30     */
31    public static final int ZOOM_FACTOR_SMALL = 1;
32
33    /**
34     * A medium zoom factor, recommended for medium sized item views.
35     */
36    public static final int ZOOM_FACTOR_MEDIUM = 2;
37
38    /**
39     * A large zoom factor, recommended for small item views.
40     */
41    public static final int ZOOM_FACTOR_LARGE = 3;
42
43    /**
44     * Called when an item gains or loses focus.
45     * @hide
46     *
47     * @param view The view whose focus is changing.
48     * @param hasFocus True if focus is gained; false otherwise.
49     */
50    void onItemFocused(View view, boolean hasFocus);
51}
52