Merge "Create interface for different transition types." into sc-dev am: 269fd081

package com.android.settingslib.transition;

import androidx.annotation.IntDef;

import android.app.Activity;

import android.content.Context;

import android.util.Log;

import com.google.android.material.transition.platform.MaterialSharedAxis;

import com.google.android.material.transition.platform.SlideDistanceProvider;

import java.lang.annotation.Retention;

import java.lang.annotation.RetentionPolicy;

/**

 * A helper class to apply Settings Transition

 */

public class SettingsTransitionHelper {

    /**

     * Flags indicating the type of the transition.

     */

    @IntDef({

            TransitionType.TRANSITION_NONE,

            TransitionType.TRANSITION_SHARED_AXIS,

            TransitionType.TRANSITION_SLIDE,

            TransitionType.TRANSITION_FADE

    })

    @Retention(RetentionPolicy.SOURCE)

    public @interface TransitionType {

        int TRANSITION_NONE = -1;

        int TRANSITION_SHARED_AXIS = 0;

        int TRANSITION_SLIDE = 1;

        int TRANSITION_FADE = 2;

    }

    private static final String TAG = "SettingsTransitionHelper";

    private static final long DURATION = 450L;

    private static final float FADE_THROUGH_THRESHOLD = 0.22F;