41 lines
1.4 KiB
Java
41 lines
1.4 KiB
Java
package androidx.viewpager2.widget;
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import android.view.View;
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import android.view.ViewParent;
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import androidx.core.util.Preconditions;
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import androidx.recyclerview.widget.RecyclerView;
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import androidx.viewpager2.widget.ViewPager2;
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/* loaded from: classes.dex */
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public final class MarginPageTransformer implements ViewPager2.PageTransformer {
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private final int mMarginPx;
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public MarginPageTransformer(int i) {
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Preconditions.checkArgumentNonnegative(i, "Margin must be non-negative");
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this.mMarginPx = i;
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}
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@Override // androidx.viewpager2.widget.ViewPager2.PageTransformer
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public void transformPage(View view, float f) {
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ViewPager2 requireViewPager = requireViewPager(view);
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float f2 = this.mMarginPx * f;
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if (requireViewPager.getOrientation() == 0) {
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if (requireViewPager.isRtl()) {
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f2 = -f2;
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}
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view.setTranslationX(f2);
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return;
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}
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view.setTranslationY(f2);
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}
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private ViewPager2 requireViewPager(View view) {
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ViewParent parent = view.getParent();
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ViewParent parent2 = parent.getParent();
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if ((parent instanceof RecyclerView) && (parent2 instanceof ViewPager2)) {
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return (ViewPager2) parent2;
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}
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throw new IllegalStateException("Expected the page view to be managed by a ViewPager2 instance.");
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}
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}
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