| /* |
| * Copyright 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.example.android.camera2video; |
| |
| import android.content.Context; |
| import android.util.AttributeSet; |
| import android.view.TextureView; |
| |
| /** |
| * A {@link TextureView} that can be adjusted to a specified aspect ratio. |
| */ |
| public class AutoFitTextureView extends TextureView { |
| |
| private int mRatioWidth = 0; |
| private int mRatioHeight = 0; |
| |
| public AutoFitTextureView(Context context) { |
| this(context, null); |
| } |
| |
| public AutoFitTextureView(Context context, AttributeSet attrs) { |
| this(context, attrs, 0); |
| } |
| |
| public AutoFitTextureView(Context context, AttributeSet attrs, int defStyle) { |
| super(context, attrs, defStyle); |
| } |
| |
| /** |
| * Sets the aspect ratio for this view. The size of the view will be measured based on the ratio |
| * calculated from the parameters. Note that the actual sizes of parameters don't matter, that |
| * is, calling setAspectRatio(2, 3) and setAspectRatio(4, 6) make the same result. |
| * |
| * @param width Relative horizontal size |
| * @param height Relative vertical size |
| */ |
| public void setAspectRatio(int width, int height) { |
| if (width < 0 || height < 0) { |
| throw new IllegalArgumentException("Size cannot be negative."); |
| } |
| mRatioWidth = width; |
| mRatioHeight = height; |
| requestLayout(); |
| } |
| |
| @Override |
| protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { |
| super.onMeasure(widthMeasureSpec, heightMeasureSpec); |
| int width = MeasureSpec.getSize(widthMeasureSpec); |
| int height = MeasureSpec.getSize(heightMeasureSpec); |
| if (0 == mRatioWidth || 0 == mRatioHeight) { |
| setMeasuredDimension(width, height); |
| } else { |
| if (width < height * mRatioWidth / mRatioHeight) { |
| setMeasuredDimension(width, width * mRatioHeight / mRatioWidth); |
| } else { |
| setMeasuredDimension(height * mRatioWidth / mRatioHeight, height); |
| } |
| } |
| } |
| |
| } |