1 /* 2 * Copyright (C) 2014 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.camera.one.v2.common; 18 19 import android.graphics.Rect; 20 import android.hardware.camera2.CameraCharacteristics; 21 22 import com.google.common.base.Supplier; 23 24 /** 25 * Computes the current crop region based on the current zoom. 26 */ 27 public class ZoomedCropRegion implements Supplier<Rect> { 28 private final Rect mSensorArrayArea; 29 private final Supplier<Float> mZoom; 30 31 public ZoomedCropRegion(Rect sensorArrayArea, Supplier<Float> zoom) { 32 mSensorArrayArea = sensorArrayArea; 33 mZoom = zoom; 34 } 35 36 @Override 37 public Rect get() { 38 float zoom = mZoom.get(); 39 Rect sensor = mSensorArrayArea; 40 int xCenter = sensor.width() / 2; 41 int yCenter = sensor.height() / 2; 42 int xDelta = (int) (0.5f * sensor.width() / zoom); 43 int yDelta = (int) (0.5f * sensor.height() / zoom); 44 return new Rect(xCenter - xDelta, yCenter - yDelta, xCenter + xDelta, yCenter + yDelta); 45 } 46 } 47
