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c1e1497d13
The SubtitleLayout is now properly aligned with the surface. This means the subtitles remain on top of the video in portrait mode, rather than being huge and below it.
86 lines
2.9 KiB
Java
86 lines
2.9 KiB
Java
/*
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* Copyright (C) 2014 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.google.android.exoplayer;
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import android.content.Context;
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import android.util.AttributeSet;
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import android.widget.FrameLayout;
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/**
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* A {@link FrameLayout} that resizes itself to match a specified aspect ratio.
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*/
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public final class AspectRatioFrameLayout extends FrameLayout {
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/**
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* The {@link FrameLayout} will not resize itself if the fractional difference between its natural
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* aspect ratio and the requested aspect ratio falls below this threshold.
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* <p>
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* This tolerance allows the view to occupy the whole of the screen when the requested aspect
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* ratio is very close, but not exactly equal to, the aspect ratio of the screen. This may reduce
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* the number of view layers that need to be composited by the underlying system, which can help
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* to reduce power consumption.
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*/
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private static final float MAX_ASPECT_RATIO_DEFORMATION_FRACTION = 0.01f;
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private float videoAspectRatio;
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public AspectRatioFrameLayout(Context context) {
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super(context);
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}
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public AspectRatioFrameLayout(Context context, AttributeSet attrs) {
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super(context, attrs);
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}
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/**
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* Set the aspect ratio that this view should satisfy.
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*
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* @param widthHeightRatio The width to height ratio.
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*/
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public void setAspectRatio(float widthHeightRatio) {
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if (this.videoAspectRatio != widthHeightRatio) {
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this.videoAspectRatio = widthHeightRatio;
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requestLayout();
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}
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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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if (videoAspectRatio == 0) {
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// Aspect ratio not set.
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return;
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}
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int width = getMeasuredWidth();
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int height = getMeasuredHeight();
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float viewAspectRatio = (float) width / height;
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float aspectDeformation = videoAspectRatio / viewAspectRatio - 1;
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if (Math.abs(aspectDeformation) <= MAX_ASPECT_RATIO_DEFORMATION_FRACTION) {
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// We're within the allowed tolerance.
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return;
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}
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if (aspectDeformation > 0) {
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height = (int) (width / videoAspectRatio);
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} else {
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width = (int) (height * videoAspectRatio);
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}
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super.onMeasure(MeasureSpec.makeMeasureSpec(width, MeasureSpec.EXACTLY),
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MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY));
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}
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}
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