1 /* 2 * Copyright (C) 2017 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 package com.android.wallpaper.module; 17 18 import android.graphics.Bitmap; 19 import android.graphics.Rect; 20 21 import com.android.wallpaper.asset.Asset; 22 23 import androidx.annotation.Nullable; 24 25 /** 26 * Interface for classes which perform crop operations on bitmaps. 27 */ 28 public interface BitmapCropper { 29 30 /** 31 * Crops and scales a bitmap per the given scale factor and crop area (at target scale) from the 32 * source asset. 33 */ cropAndScaleBitmap(Asset asset, float scale, Rect cropRect, Callback callback)34 void cropAndScaleBitmap(Asset asset, float scale, Rect cropRect, Callback callback); 35 36 /** 37 * Interface for receiving the output bitmap of crop operations. 38 */ 39 interface Callback { onBitmapCropped(Bitmap croppedBitmap)40 void onBitmapCropped(Bitmap croppedBitmap); 41 42 /** 43 * Called on an error during the crop. If a Throwable was caught along the way, it is passed 44 * here. 45 */ onError(@ullable Throwable e)46 void onError(@Nullable Throwable e); 47 } 48 } 49