| /* |
| * Copyright 2018 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.server.wm; |
| |
| import android.graphics.Rect; |
| import android.graphics.Region; |
| import android.util.SparseArray; |
| |
| /** |
| * A holder that contains a collection of regions identified by int id. Each individual region can |
| * be updated separately. |
| */ |
| class TapExcludeRegionHolder { |
| private SparseArray<Region> mTapExcludeRegions = new SparseArray<>(); |
| |
| /** Update the specified region with provided position and size. */ |
| void updateRegion(int regionId, Region region) { |
| // Remove the previous one because there is a new one incoming. |
| mTapExcludeRegions.remove(regionId); |
| |
| if (region == null || region.isEmpty()) { |
| // The incoming region is invalid. Don't use it. |
| return; |
| } |
| |
| mTapExcludeRegions.put(regionId, region); |
| } |
| |
| /** |
| * Union the provided region with current region formed by this container. |
| */ |
| void amendRegion(Region region, Rect bounds) { |
| for (int i = mTapExcludeRegions.size() - 1; i >= 0; --i) { |
| final Region r = mTapExcludeRegions.valueAt(i); |
| if (bounds != null) { |
| r.op(bounds, Region.Op.INTERSECT); |
| } |
| region.op(r, Region.Op.UNION); |
| } |
| } |
| } |