1 /* 2 * Copyright 2018 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.server.wm; 18 19 import android.graphics.Rect; 20 import android.graphics.Region; 21 import android.util.SparseArray; 22 23 /** 24 * A holder that contains a collection of rectangular areas identified by int id. Each individual 25 * region can be updated separately. 26 */ 27 class TapExcludeRegionHolder { 28 private SparseArray<Rect> mTapExcludeRects = new SparseArray<>(); 29 30 /** Update the specified region with provided position and size. */ 31 void updateRegion(int regionId, int left, int top, int width, int height) { 32 if (width <= 0 || height <= 0) { 33 // A region became empty - remove it. 34 mTapExcludeRects.remove(regionId); 35 return; 36 } 37 38 Rect region = mTapExcludeRects.get(regionId); 39 if (region == null) { 40 region = new Rect(); 41 } 42 region.set(left, top, left + width, top + height); 43 mTapExcludeRects.put(regionId, region); 44 } 45 46 /** 47 * Union the provided region with current region formed by this container. 48 */ 49 void amendRegion(Region region, Rect boundingRegion) { 50 for (int i = mTapExcludeRects.size() - 1; i>= 0 ; --i) { 51 final Rect rect = mTapExcludeRects.valueAt(i); 52 rect.intersect(boundingRegion); 53 region.union(rect); 54 } 55 } 56 } 57
