src/com/android/settings/accessibility/TextReadingPreviewPager.java

/*
 * Copyright (C) 2022 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.settings.accessibility;

import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.ViewGroup;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.viewpager.widget.ViewPager;

/**
 * The view pager is used for displaying screen preview with different size configuration changes.
 */
public class TextReadingPreviewPager extends ViewPager {
    public TextReadingPreviewPager(@NonNull Context context, @Nullable AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        final ViewGroup parent = (ViewGroup) getParent();
        if (parent != null) {
            // Avoid conflicting with the nested scroll view.
            parent.requestDisallowInterceptTouchEvent(true);
        }

        return super.onInterceptTouchEvent(ev);
    }
}