2 * Copyright © 2017,2019 Soren Stoutner <soren@stoutner.com>.
4 * This file is part of Privacy Browser <https://www.stoutner.com/privacy-browser>.
6 * Privacy Browser is free software: you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation, either version 3 of the License, or
9 * (at your option) any later version.
11 * Privacy Browser is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with Privacy Browser. If not, see <http://www.gnu.org/licenses/>.
20 package com.stoutner.privacybrowser.views;
22 import android.content.Context;
23 import android.util.AttributeSet;
24 import android.view.View;
26 import androidx.viewpager.widget.ViewPager;
28 public class WrapVerticalContentViewPager extends ViewPager {
29 // Setup the default constructors.
30 public WrapVerticalContentViewPager(Context context) {
34 public WrapVerticalContentViewPager(Context context, AttributeSet attrs) {
35 super(context, attrs);
39 protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
40 // Perform an initial `super.onMeasure`, which populates `getChildCount`.
41 super.onMeasure(widthMeasureSpec, heightMeasureSpec);
43 // Initialize `maximumHeight`.
44 int maximumHeight = 0;
46 // Find the maximum height of each of the child views.
47 for (int i = 0; i < getChildCount(); i++) {
48 View childView = getChildAt(i);
50 // Measure the child view height with no constraints.
51 childView.measure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));
53 // Store the child's height if it is larger than `maximumHeight`.
54 if (childView.getMeasuredHeight() > maximumHeight) {
55 maximumHeight = childView.getMeasuredHeight();
59 // Perform a final `super.onMeasure` to set the `maximumHeight`.
60 super.onMeasure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(maximumHeight, MeasureSpec.EXACTLY));