111 lines
4.1 KiB
Java
111 lines
4.1 KiB
Java
package androidx.viewpager2.widget;
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import android.animation.LayoutTransition;
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import android.view.View;
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import android.view.ViewGroup;
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import androidx.recyclerview.widget.LinearLayoutManager;
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import java.lang.reflect.Array;
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import java.util.Arrays;
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import java.util.Comparator;
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/* loaded from: classes.dex */
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final class AnimateLayoutChangeDetector {
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private static final ViewGroup.MarginLayoutParams ZERO_MARGIN_LAYOUT_PARAMS;
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private LinearLayoutManager mLayoutManager;
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static {
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ViewGroup.MarginLayoutParams marginLayoutParams = new ViewGroup.MarginLayoutParams(-1, -1);
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ZERO_MARGIN_LAYOUT_PARAMS = marginLayoutParams;
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marginLayoutParams.setMargins(0, 0, 0, 0);
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}
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AnimateLayoutChangeDetector(LinearLayoutManager linearLayoutManager) {
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this.mLayoutManager = linearLayoutManager;
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}
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boolean mayHaveInterferingAnimations() {
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return (!arePagesLaidOutContiguously() || this.mLayoutManager.getChildCount() <= 1) && hasRunningChangingLayoutTransition();
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}
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private boolean arePagesLaidOutContiguously() {
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int top;
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int i;
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int bottom;
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int i2;
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int childCount = this.mLayoutManager.getChildCount();
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if (childCount == 0) {
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return true;
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}
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boolean z = this.mLayoutManager.getOrientation() == 0;
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int[][] iArr = (int[][]) Array.newInstance((Class<?>) Integer.TYPE, childCount, 2);
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for (int i3 = 0; i3 < childCount; i3++) {
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View childAt = this.mLayoutManager.getChildAt(i3);
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if (childAt == null) {
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throw new IllegalStateException("null view contained in the view hierarchy");
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}
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ViewGroup.LayoutParams layoutParams = childAt.getLayoutParams();
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ViewGroup.MarginLayoutParams marginLayoutParams = layoutParams instanceof ViewGroup.MarginLayoutParams ? (ViewGroup.MarginLayoutParams) layoutParams : ZERO_MARGIN_LAYOUT_PARAMS;
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int[] iArr2 = iArr[i3];
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if (z) {
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top = childAt.getLeft();
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i = marginLayoutParams.leftMargin;
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} else {
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top = childAt.getTop();
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i = marginLayoutParams.topMargin;
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}
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iArr2[0] = top - i;
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int[] iArr3 = iArr[i3];
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if (z) {
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bottom = childAt.getRight();
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i2 = marginLayoutParams.rightMargin;
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} else {
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bottom = childAt.getBottom();
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i2 = marginLayoutParams.bottomMargin;
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}
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iArr3[1] = bottom + i2;
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}
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Arrays.sort(iArr, new Comparator<int[]>() { // from class: androidx.viewpager2.widget.AnimateLayoutChangeDetector.1
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@Override // java.util.Comparator
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public int compare(int[] iArr4, int[] iArr5) {
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return iArr4[0] - iArr5[0];
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}
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});
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for (int i4 = 1; i4 < childCount; i4++) {
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if (iArr[i4 - 1][1] != iArr[i4][0]) {
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return false;
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}
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}
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int[] iArr4 = iArr[0];
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int i5 = iArr4[1];
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int i6 = iArr4[0];
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return i6 <= 0 && iArr[childCount - 1][1] >= i5 - i6;
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}
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private boolean hasRunningChangingLayoutTransition() {
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int childCount = this.mLayoutManager.getChildCount();
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for (int i = 0; i < childCount; i++) {
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if (hasRunningChangingLayoutTransition(this.mLayoutManager.getChildAt(i))) {
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return true;
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}
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}
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return false;
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}
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private static boolean hasRunningChangingLayoutTransition(View view) {
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if (view instanceof ViewGroup) {
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ViewGroup viewGroup = (ViewGroup) view;
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LayoutTransition layoutTransition = viewGroup.getLayoutTransition();
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if (layoutTransition != null && layoutTransition.isChangingLayout()) {
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return true;
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}
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int childCount = viewGroup.getChildCount();
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for (int i = 0; i < childCount; i++) {
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if (hasRunningChangingLayoutTransition(viewGroup.getChildAt(i))) {
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return true;
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}
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}
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}
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return false;
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}
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}
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