ed3d2f9171
Flag: N/A Bug: 317947238 Test: manual Change-Id: I173881b84d5c5ff81c15a80a4de65fda59f5bf65
59 lines
2.1 KiB
Java
59 lines
2.1 KiB
Java
/*
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* Copyright (C) 2022 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.accessibility;
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import android.content.Context;
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import android.util.AttributeSet;
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import android.view.View;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import androidx.viewpager.widget.ViewPager;
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/**
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* The view pager is used for displaying screen preview with different size configuration changes.
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*/
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public class TextReadingPreviewPager extends ViewPager {
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public TextReadingPreviewPager(@NonNull Context context, @Nullable AttributeSet attrs) {
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super(context, attrs);
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}
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@Override
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public boolean onStartNestedScroll(View child, View target, int nestedScrollAxes) {
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return (nestedScrollAxes & View.SCROLL_AXIS_VERTICAL) != 0;
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}
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@Override
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public void onNestedScrollAccepted(View child, View target, int axes) {
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super.onNestedScrollAccepted(child, target, axes);
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// Allow the nested scrollview inside of the view pager to be scrollable.
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getParent().requestDisallowInterceptTouchEvent(true);
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}
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@Override
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public void onNestedScroll(
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View target, int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed) {
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if (dyUnconsumed != 0) {
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// Assume dyUnconsumed != 0 means the target has been scrolled to the end vertically.
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// We could let the parent to consume the rest of the dyUnconsumed
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getParent().requestDisallowInterceptTouchEvent(false);
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}
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super.onNestedScroll(target, dxConsumed, dyConsumed, dxUnconsumed, dyUnconsumed);
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}
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}
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