package safeluck.drive.evaluation.customview;
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import android.view.TextureView;
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/**
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* MyApplication2
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* Created by lzw on 2019/6/27. 13:51:32
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* 邮箱：632393724@qq.com
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* All Rights Saved! Chongqing AnYun Tech co. LTD
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*/
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import android.content.Context;
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import android.util.AttributeSet;
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/**
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* A {@link TextureView} that can be adjusted to a specified aspect ratio.
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*/
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public class AutoFitTextureView extends TextureView {
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private int mRatioWidth = 0;
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private int mRatioHeight = 0;
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public AutoFitTextureView(Context context) {
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this(context, null);
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}
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public AutoFitTextureView(Context context, AttributeSet attrs) {
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this(context, attrs, 0);
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}
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public AutoFitTextureView(Context context, AttributeSet attrs, int defStyle) {
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super(context, attrs, defStyle);
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}
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/**
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* Sets the aspect ratio for this view. The size of the view will be measured based on the ratio
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* calculated from the parameters. Note that the actual sizes of parameters don't matter, that
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* is, calling setAspectRatio(2, 3) and setAspectRatio(4, 6) make the same result.
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*
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* @param width Relative horizontal size
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* @param height Relative vertical size
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*/
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public void setAspectRatio(int width, int height) {
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if (width < 0 || height < 0) {
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throw new IllegalArgumentException("Size cannot be negative.");
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}
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mRatioWidth = width;
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mRatioHeight = height;
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requestLayout();
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}
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@Override
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protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
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super.onMeasure(widthMeasureSpec, heightMeasureSpec);
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int width = MeasureSpec.getSize(widthMeasureSpec);
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int height = MeasureSpec.getSize(heightMeasureSpec);
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if (0 == mRatioWidth || 0 == mRatioHeight) {
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setMeasuredDimension(width, height);
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} else {
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if (width < height * mRatioWidth / mRatioHeight) {
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setMeasuredDimension(width, width * mRatioHeight / mRatioWidth);
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} else {
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setMeasuredDimension(height * mRatioWidth / mRatioHeight, height);
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}
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}
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}
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}
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