1 /*
2  * Copyright (C) 2011 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 package com.android.browser.view;
17 
18 import android.content.Context;
19 import android.util.AttributeSet;
20 import android.widget.GridView;
21 
22 public class SnapshotGridView extends GridView {
23 
24     private static final int MAX_COLUMNS = 5;
25 
26     private int mColWidth;
27 
SnapshotGridView(Context context)28     public SnapshotGridView(Context context) {
29         super(context);
30     }
31 
SnapshotGridView(Context context, AttributeSet attrs)32     public SnapshotGridView(Context context, AttributeSet attrs) {
33         super(context, attrs);
34     }
35 
SnapshotGridView(Context context, AttributeSet attrs, int defStyle)36     public SnapshotGridView(Context context, AttributeSet attrs, int defStyle) {
37         super(context, attrs, defStyle);
38     }
39 
40     @Override
onMeasure(int widthMeasureSpec, int heightMeasureSpec)41     protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
42         int widthSize = MeasureSpec.getSize(widthMeasureSpec);
43         int widthMode = MeasureSpec.getMode(widthMeasureSpec);
44         if (widthSize > 0 && mColWidth > 0) {
45             int numCols = widthSize / mColWidth;
46             widthSize = Math.min(
47                     Math.min(numCols, MAX_COLUMNS) * mColWidth,
48                     widthSize);
49             widthMeasureSpec = MeasureSpec.makeMeasureSpec(widthSize, widthMode);
50         }
51         super.onMeasure(widthMeasureSpec, heightMeasureSpec);
52     }
53 
54     @Override
setColumnWidth(int columnWidth)55     public void setColumnWidth(int columnWidth) {
56         mColWidth = columnWidth;
57         super.setColumnWidth(columnWidth);
58     }
59 }
60