| /* |
| * Copyright (C) 2017 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.android.wallpaper.asset; |
| |
| import android.graphics.Point; |
| import android.graphics.Rect; |
| import android.media.ExifInterface; |
| import android.util.Log; |
| |
| /** |
| * Rotates crop rectangles for bitmap region operations on rotated images (i.e., with non-normal |
| * EXIF orientation). |
| */ |
| public class CropRectRotator { |
| |
| private static final String TAG = "CropRectRotator"; |
| |
| /** |
| * Rotates and returns a new crop Rect which is adjusted for the provided EXIF orientation value. |
| */ |
| public static Rect rotateCropRectForExifOrientation(Point dimensions, Rect srcRect, |
| int exifOrientation) { |
| |
| switch (exifOrientation) { |
| case ExifInterface.ORIENTATION_NORMAL: |
| return new Rect(srcRect); |
| case ExifInterface.ORIENTATION_ROTATE_90: |
| return new Rect(srcRect.top, dimensions.x - srcRect.right, srcRect.bottom, |
| dimensions.x - srcRect.left); |
| case ExifInterface.ORIENTATION_ROTATE_180: |
| return new Rect(dimensions.x - srcRect.right, dimensions.y - srcRect.bottom, |
| dimensions.x - srcRect.left, dimensions.y - srcRect.top); |
| case ExifInterface.ORIENTATION_ROTATE_270: |
| return new Rect(dimensions.y - srcRect.bottom, srcRect.left, dimensions.y - srcRect.top, |
| srcRect.right); |
| default: |
| Log.w(TAG, "Unsupported EXIF orientation " + exifOrientation); |
| return new Rect(srcRect); |
| } |
| } |
| } |