HorizontalGridView.java revision 8b068ddbbf22a246eab49ec25a2f7c3abfbdca51 
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.content.Context;
17import android.content.res.TypedArray;
18import android.support.v17.leanback.R;
19import android.support.v7.widget.RecyclerView;
20import android.util.AttributeSet;
21
22/**
23 * A view that shows items in a horizontal scrolling list. The items come from
24 * the {@link RecyclerView.Adapter} associated with this view.
25 */
26public class HorizontalGridView extends BaseListView {
27
28    public HorizontalGridView(Context context) {
29        this(context, null);
30    }
31
32    public HorizontalGridView(Context context, AttributeSet attrs) {
33        this(context, attrs, 0);
34    }
35
36    public HorizontalGridView(Context context, AttributeSet attrs, int defStyle) {
37        super(context, attrs, defStyle);
38        mLayoutManager.setOrientation(RecyclerView.HORIZONTAL);
39        initAttributes(context, attrs);
40    }
41
42    protected void initAttributes(Context context, AttributeSet attrs) {
43        initBaseListViewAttributes(context, attrs);
44        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.lbHorizontalGridView);
45        setRowHeight(a.getDimensionPixelSize(R.styleable.lbHorizontalGridView_rowHeight, 0));
46        setNumRows(a.getInt(R.styleable.lbHorizontalGridView_numberOfRows, 1));
47        a.recycle();
48    }
49
50    /**
51     * Set the margin in pixels between two child items horizontally.
52     */
53    public void setHorizontalMargin(int margin) {
54        mLayoutManager.setHorizontalMargin(margin);
55        requestLayout();
56    }
57
58    /**
59     * Get the margin in pixels between two child items horizontally.
60     */
61    public int getHorizontalMargin() {
62        return mLayoutManager.getHorizontalMargin();
63    }
64
65    /**
66     * Set the number of rows.
67     */
68    public void setNumRows(int numRows) {
69        mLayoutManager.setNumRows(numRows);
70        requestLayout();
71    }
72
73    /**
74     * Set the row height.
75     */
76    public void setRowHeight(int height) {
77        mLayoutManager.setRowHeight(height);
78        requestLayout();
79    }
80}
81