1b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird/* 2b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird * Copyright (C) 2017 The Android Open Source Project 3b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird * 4b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird * Licensed under the Apache License, Version 2.0 (the "License"); 5b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird * you may not use this file except in compliance with the License. 6b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird * You may obtain a copy of the License at 7b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird * 8b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird * http://www.apache.org/licenses/LICENSE-2.0 9b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird * 10b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird * Unless required by applicable law or agreed to in writing, software 11b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird * distributed under the License is distributed on an "AS IS" BASIS, 12b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird * See the License for the specific language governing permissions and 14b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird * limitations under the License. 15b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird */ 16b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird 17b0506ca83c43837d58461be5b9117a6808a4cae4Evan Lairdpackage com.android.systemui; 18b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird 19b0506ca83c43837d58461be5b9117a6808a4cae4Evan Lairdimport android.content.Context; 20b0506ca83c43837d58461be5b9117a6808a4cae4Evan Lairdimport android.graphics.Region; 21b0506ca83c43837d58461be5b9117a6808a4cae4Evan Lairdimport android.graphics.Region.Op; 22b0506ca83c43837d58461be5b9117a6808a4cae4Evan Lairdimport android.util.AttributeSet; 23b0506ca83c43837d58461be5b9117a6808a4cae4Evan Lairdimport android.view.View; 24b0506ca83c43837d58461be5b9117a6808a4cae4Evan Lairdimport android.view.ViewTreeObserver; 25b0506ca83c43837d58461be5b9117a6808a4cae4Evan Lairdimport android.view.ViewTreeObserver.InternalInsetsInfo; 26b0506ca83c43837d58461be5b9117a6808a4cae4Evan Lairdimport android.view.ViewTreeObserver.OnComputeInternalInsetsListener; 27b0506ca83c43837d58461be5b9117a6808a4cae4Evan Lairdimport android.widget.FrameLayout; 28b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird 29b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird/** 30b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird * Frame layout that will intercept the touches of children if they want to 31b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird */ 32b0506ca83c43837d58461be5b9117a6808a4cae4Evan Lairdpublic class RegionInterceptingFrameLayout extends FrameLayout { 33b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird public RegionInterceptingFrameLayout(Context context) { 34b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird super(context); 35b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird } 36b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird 37b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird public RegionInterceptingFrameLayout(Context context, AttributeSet attrs) { 38b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird super(context, attrs); 39b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird } 40b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird 41b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird public RegionInterceptingFrameLayout(Context context, AttributeSet attrs, int defStyleAttr) { 42b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird super(context, attrs, defStyleAttr); 43b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird } 44b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird 45b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird public RegionInterceptingFrameLayout(Context context, AttributeSet attrs, int defStyleAttr, 46b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird int defStyleRes) { 47b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird super(context, attrs, defStyleAttr, defStyleRes); 48b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird } 49b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird 50b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird @Override 51b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird protected void onAttachedToWindow() { 52b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird super.onAttachedToWindow(); 53b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird getViewTreeObserver().addOnComputeInternalInsetsListener(mInsetsListener); 54b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird } 55b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird 56b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird @Override 57b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird protected void onDetachedFromWindow() { 58b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird super.onDetachedFromWindow(); 59b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird getViewTreeObserver().removeOnComputeInternalInsetsListener(mInsetsListener); 60b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird } 61b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird 62b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird private final OnComputeInternalInsetsListener mInsetsListener = internalInsetsInfo -> { 63b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird internalInsetsInfo.setTouchableInsets(InternalInsetsInfo.TOUCHABLE_INSETS_REGION); 64b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird internalInsetsInfo.touchableRegion.setEmpty(); 65b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird for (int i = 0; i < getChildCount(); i++) { 66b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird View child = getChildAt(i); 67b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird if (!(child instanceof RegionInterceptableView)) { 68b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird continue; 69b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird } 70b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird RegionInterceptableView riv = (RegionInterceptableView) child; 71b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird if (!riv.shouldInterceptTouch()) { 72b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird continue; 73b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird } 74b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird Region unionRegion = riv.getInterceptRegion(); 75b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird if (unionRegion == null) { 76b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird continue; 77b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird } 78b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird 79b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird internalInsetsInfo.touchableRegion.op(riv.getInterceptRegion(), Op.UNION); 80b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird } 81b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird }; 82b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird 83b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird public interface RegionInterceptableView { 84b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird default public boolean shouldInterceptTouch() { 85b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird return false; 86b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird } 87b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird 88b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird public Region getInterceptRegion(); 89b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird } 90b0506ca83c43837d58461be5b9117a6808a4cae4Evan Laird} 91