Ben Kwa | 1bb3abe | 2015-08-20 13:10:33 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 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; |
Ben Kwa | 3e4db1a | 2015-11-06 11:07:22 -0800 | [diff] [blame] | 21 | import android.widget.ImageView; |
Ben Kwa | 1bb3abe | 2015-08-20 13:10:33 -0700 | [diff] [blame] | 22 | |
| 23 | /** |
Ben Kwa | 3e4db1a | 2015-11-06 11:07:22 -0800 | [diff] [blame] | 24 | * Ensures that grid thumbnails are always square. |
Ben Kwa | 1bb3abe | 2015-08-20 13:10:33 -0700 | [diff] [blame] | 25 | */ |
Ben Kwa | 3e4db1a | 2015-11-06 11:07:22 -0800 | [diff] [blame] | 26 | public class GridItemThumbnail extends ImageView { |
| 27 | public GridItemThumbnail(Context context) { |
Ben Kwa | 1bb3abe | 2015-08-20 13:10:33 -0700 | [diff] [blame] | 28 | super(context); |
| 29 | } |
| 30 | |
Ben Kwa | 3e4db1a | 2015-11-06 11:07:22 -0800 | [diff] [blame] | 31 | public GridItemThumbnail(Context context, AttributeSet attrs) { |
Ben Kwa | 1bb3abe | 2015-08-20 13:10:33 -0700 | [diff] [blame] | 32 | super(context, attrs); |
| 33 | } |
| 34 | |
Ben Kwa | 3e4db1a | 2015-11-06 11:07:22 -0800 | [diff] [blame] | 35 | public GridItemThumbnail(Context context, AttributeSet attrs, int defStyle) { |
Ben Kwa | 1bb3abe | 2015-08-20 13:10:33 -0700 | [diff] [blame] | 36 | super(context, attrs, defStyle); |
| 37 | } |
| 38 | |
| 39 | @Override |
| 40 | public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| 41 | // Grid layout uses item width to figure out the number of columns, then dynamically fits |
| 42 | // rows into the view. The upshot of this is that changing the item width will mess up the |
| 43 | // grid layout - so to make the items square, throw out the height and use the width for |
| 44 | // both dimensions. The grid layout will correctly adjust the row height. |
| 45 | // |
| 46 | // Note that this code will need to be changed if the layout manager's orientation is |
| 47 | // changed from VERTICAL to HORIZONTAL. |
| 48 | super.onMeasure(widthMeasureSpec, widthMeasureSpec); |
| 49 | } |
| 50 | } |