Parralax Page Transformer

ParallaxPagerTransformer.kt

class ParallaxPagerTransformer : ViewPager.PageTransformer {
    override fun transformPage(page: View, position: Float) {
        val pageWidth = page.width
        val pageWidthTimesPosition = pageWidth.times(position)

        val imageScreen = page.findViewById<ImageView>(R.id.img_screen)
        val imageBgTop = page.findViewById<ImageView>(R.id.img_bg_top)

        val staticPosition = position <= -1.0f || position >= 1.0f
        val zeroPosition = position == 0.0f

        if (!staticPosition && !zeroPosition) {
            imageScreen?.let {
                it.translationX = pageWidthTimesPosition.times(0.5f)
            }

            imageBgTop?.let {
                it.translationX = pageWidthTimesPosition.times(0.3f)
            }
        }
    }
}