35 lines
973 B
Java
35 lines
973 B
Java
package code.name.monkey.retromusic.transform;
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import android.view.View;
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import androidx.annotation.NonNull;
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import androidx.viewpager.widget.ViewPager;
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public class HingeTransformation implements ViewPager.PageTransformer {
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@Override
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public void transformPage(@NonNull View page, float position) {
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page.setTranslationX(-position * page.getWidth());
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page.setPivotX(0);
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page.setPivotY(0);
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if (position < -1) { // [-Infinity,-1)
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// This page is way off-screen to the left.
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page.setAlpha(0);
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} else if (position <= 0) { // [-1,0]
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page.setRotation(90 * Math.abs(position));
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page.setAlpha(1 - Math.abs(position));
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} else if (position <= 1) { // (0,1]
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page.setRotation(0);
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page.setAlpha(1);
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} else { // (1,+Infinity]
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// This page is way off-screen to the right.
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page.setAlpha(0);
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}
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}
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} |