Custom CircularRevealWidget for ImageView.

CircularRevealImageView.kt

package com.airsaid.revealeffectview

import android.annotation.SuppressLint
import android.content.Context
import android.graphics.Canvas
import android.graphics.drawable.Drawable
import android.util.AttributeSet
import androidx.appcompat.widget.AppCompatImageView
import com.google.android.material.circularreveal.CircularRevealHelper
import com.google.android.material.circularreveal.CircularRevealWidget

/**
 * @author airsaid
 */
class CircularRevealImageView @JvmOverloads constructor(
  context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0) : AppCompatImageView(context, attrs, defStyleAttr)
  , CircularRevealWidget {

  private val helper: CircularRevealHelper = CircularRevealHelper(this)

  override fun buildCircularRevealCache() {
    this.helper.buildCircularRevealCache()
  }

  override fun destroyCircularRevealCache() {
    this.helper.destroyCircularRevealCache()
  }

  override fun getRevealInfo(): CircularRevealWidget.RevealInfo? {
    return this.helper.revealInfo
  }

  override fun setRevealInfo(revealInfo: CircularRevealWidget.RevealInfo?) {
    this.helper.revealInfo = revealInfo
  }

  override fun getCircularRevealScrimColor(): Int {
    return this.helper.circularRevealScrimColor
  }

  override fun setCircularRevealScrimColor(color: Int) {
    this.helper.circularRevealScrimColor = color
  }

  override fun getCircularRevealOverlayDrawable(): Drawable? {
    return this.helper.circularRevealOverlayDrawable
  }

  override fun setCircularRevealOverlayDrawable(drawable: Drawable?) {
    this.helper.circularRevealOverlayDrawable = drawable
  }

  @SuppressLint("MissingSuperCall")
  override fun draw(canvas: Canvas) {
    this.helper.draw(canvas)
  }

  override fun actualDraw(canvas: Canvas) {
    super.draw(canvas)
  }

  override fun isOpaque(): Boolean {
    return this.helper.isOpaque
  }

  override fun actualIsOpaque(): Boolean {
    return super.isOpaque()
  }

}