11d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall/* 21d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall * Copyright 2014 The Android Open Source Project 31d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall * 41d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall * Licensed under the Apache License, Version 2.0 (the "License"); 51d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall * you may not use this file except in compliance with the License. 61d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall * You may obtain a copy of the License at 71d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall * 81d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall * http://www.apache.org/licenses/LICENSE-2.0 91d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall * 101d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall * Unless required by applicable law or agreed to in writing, software 111d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall * distributed under the License is distributed on an "AS IS" BASIS, 121d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 131d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall * See the License for the specific language governing permissions and 141d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall * limitations under the License. 151d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall */ 161d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall 171d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wallpackage com.example.android.powerprofile.cameraavg; 181d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall 191d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wallimport android.content.Context; 201d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wallimport android.util.AttributeSet; 211d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wallimport android.view.TextureView; 221d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall 231d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall/** 241d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall * A {@link TextureView} that can be adjusted to a specified aspect ratio. 251d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall */ 261d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wallpublic class AutoFitTextureView extends TextureView { 271d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall 281d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall private int mRatioWidth = 0; 291d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall private int mRatioHeight = 0; 301d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall 311d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall public AutoFitTextureView(Context context) { 321d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall this(context, null); 331d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall } 341d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall 351d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall public AutoFitTextureView(Context context, AttributeSet attrs) { 361d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall this(context, attrs, 0); 371d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall } 381d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall 391d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall public AutoFitTextureView(Context context, AttributeSet attrs, int defStyle) { 401d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall super(context, attrs, defStyle); 411d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall } 421d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall 431d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall /** 441d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall * Sets the aspect ratio for this view. The size of the view will be measured based on the ratio 451d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall * calculated from the parameters. Note that the actual sizes of parameters don't matter, that 461d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall * is, calling setAspectRatio(2, 3) and setAspectRatio(4, 6) make the same result. 471d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall * 481d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall * @param width Relative horizontal size 491d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall * @param height Relative vertical size 501d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall */ 511d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall public void setAspectRatio(int width, int height) { 521d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall if (width < 0 || height < 0) { 531d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall throw new IllegalArgumentException("Size cannot be negative."); 541d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall } 551d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall mRatioWidth = width; 561d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall mRatioHeight = height; 571d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall requestLayout(); 581d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall } 591d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall 601d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall @Override 611d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 621d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall super.onMeasure(widthMeasureSpec, heightMeasureSpec); 631d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall int width = MeasureSpec.getSize(widthMeasureSpec); 641d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall int height = MeasureSpec.getSize(heightMeasureSpec); 651d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall if (0 == mRatioWidth || 0 == mRatioHeight) { 661d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall setMeasuredDimension(width, height); 671d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall } else { 681d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall if (width < height * mRatioWidth / mRatioHeight) { 691d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall setMeasuredDimension(width, width * mRatioHeight / mRatioWidth); 701d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall } else { 711d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall setMeasuredDimension(height * mRatioWidth / mRatioHeight, height); 721d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall } 731d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall } 741d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall } 751d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall 761d110d812ca041a87a08a291dbf1d7f6f0c11c29Marissa Wall} 77