51 lines
1.8 KiB
Java
51 lines
1.8 KiB
Java
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.documentsui;
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import android.content.Context;
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import android.util.AttributeSet;
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import android.widget.ImageView;
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/**
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* Ensures that grid thumbnails are always square.
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*/
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public class GridItemThumbnail extends ImageView {
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public GridItemThumbnail(Context context) {
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super(context);
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}
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public GridItemThumbnail(Context context, AttributeSet attrs) {
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super(context, attrs);
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}
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public GridItemThumbnail(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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}
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@Override
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public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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// Grid layout uses item width to figure out the number of columns, then dynamically fits
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// rows into the view. The upshot of this is that changing the item width will mess up the
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// grid layout - so to make the items square, throw out the height and use the width for
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// both dimensions. The grid layout will correctly adjust the row height.
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//
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// Note that this code will need to be changed if the layout manager's orientation is
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// changed from VERTICAL to HORIZONTAL.
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super.onMeasure(widthMeasureSpec, widthMeasureSpec);
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}
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}
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