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Image Reflection with cool animation using Jetpack Compose
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| data class Place( | |
| val name: String, | |
| val resId: Int | |
| ) |
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| package com.vishal2376.animations | |
| import androidx.compose.animation.animateColorAsState | |
| import androidx.compose.animation.core.animateDpAsState | |
| import androidx.compose.animation.core.animateFloatAsState | |
| import androidx.compose.animation.core.tween | |
| import androidx.compose.foundation.ExperimentalFoundationApi | |
| import androidx.compose.foundation.Image | |
| import androidx.compose.foundation.background | |
| import androidx.compose.foundation.layout.Arrangement | |
| import androidx.compose.foundation.layout.Box | |
| import androidx.compose.foundation.layout.Column | |
| import androidx.compose.foundation.layout.PaddingValues | |
| import androidx.compose.foundation.layout.Spacer | |
| import androidx.compose.foundation.layout.aspectRatio | |
| import androidx.compose.foundation.layout.fillMaxSize | |
| import androidx.compose.foundation.layout.height | |
| import androidx.compose.foundation.layout.offset | |
| import androidx.compose.foundation.pager.HorizontalPager | |
| import androidx.compose.foundation.pager.rememberPagerState | |
| import androidx.compose.foundation.shape.RoundedCornerShape | |
| import androidx.compose.material3.Text | |
| import androidx.compose.runtime.Composable | |
| import androidx.compose.runtime.getValue | |
| import androidx.compose.ui.Alignment | |
| import androidx.compose.ui.Modifier | |
| import androidx.compose.ui.draw.clip | |
| import androidx.compose.ui.draw.drawWithContent | |
| import androidx.compose.ui.draw.scale | |
| import androidx.compose.ui.graphics.BlendMode | |
| import androidx.compose.ui.graphics.Brush | |
| import androidx.compose.ui.graphics.Color | |
| import androidx.compose.ui.graphics.graphicsLayer | |
| import androidx.compose.ui.layout.ContentScale | |
| import androidx.compose.ui.res.painterResource | |
| import androidx.compose.ui.tooling.preview.Preview | |
| import androidx.compose.ui.unit.TextUnit | |
| import androidx.compose.ui.unit.TextUnitType | |
| import androidx.compose.ui.unit.dp | |
| import androidx.compose.ui.unit.sp | |
| import com.vishal2376.animations.common.Place | |
| @OptIn(ExperimentalFoundationApi::class) | |
| @Composable | |
| fun ReflectionAnimation() { | |
| val places = listOf( | |
| Place("India", R.drawable.img1), | |
| Place("Italy", R.drawable.img2), | |
| Place("Turkey", R.drawable.img3), | |
| Place("Spain", R.drawable.img4), | |
| Place("Germany", R.drawable.img5), | |
| ) | |
| val pager = rememberPagerState( | |
| initialPage = 0, | |
| initialPageOffsetFraction = 0f, | |
| pageCount = { places.size } | |
| ) | |
| val bgColor by animateColorAsState( | |
| animationSpec = tween(500), | |
| targetValue = if (pager.currentPage % 2 == 0) | |
| Color(0xFFE2E7FF) | |
| else | |
| Color(0xFF090D1F), | |
| label = "" | |
| ) | |
| val textColor by animateColorAsState( | |
| animationSpec = tween(500), | |
| targetValue = if (pager.currentPage % 2 == 0) | |
| Color.Black | |
| else | |
| Color.White, | |
| label = "" | |
| ) | |
| Box( | |
| modifier = Modifier | |
| .fillMaxSize() | |
| .background(bgColor), | |
| contentAlignment = Alignment.Center | |
| ) { | |
| HorizontalPager( | |
| modifier = Modifier.fillMaxSize(), | |
| state = pager, | |
| contentPadding = PaddingValues(75.dp), | |
| key = { places[it].resId }, | |
| ) { index -> | |
| // animations | |
| val imgScale by animateFloatAsState( | |
| animationSpec = tween(500), | |
| targetValue = if (index == pager.currentPage) 1.3f else 1f, | |
| label = "" | |
| ) | |
| val reflectionAlpha by animateFloatAsState( | |
| animationSpec = tween(500), | |
| targetValue = if (index == pager.currentPage) 0.8f else 0.2f, | |
| label = "" | |
| ) | |
| val imgOffset by animateDpAsState( | |
| animationSpec = tween(500), | |
| targetValue = if (index == pager.currentPage) 80.dp else 4.dp, | |
| label = "" | |
| ) | |
| val letterSpace by animateFloatAsState( | |
| animationSpec = tween(600), | |
| targetValue = if (index == pager.currentPage) 8f else 0f, | |
| label = "" | |
| ) | |
| Column( | |
| modifier = Modifier.fillMaxSize(), | |
| horizontalAlignment = Alignment.CenterHorizontally, | |
| verticalArrangement = Arrangement.Center | |
| ) { | |
| // Text | |
| Text( | |
| text = places[index].name, | |
| fontSize = 30.sp, | |
| color = textColor, | |
| letterSpacing = TextUnit(letterSpace, TextUnitType.Sp) | |
| ) | |
| Spacer(modifier = Modifier.height(60.dp)) | |
| // Original image | |
| Image( | |
| modifier = Modifier | |
| .height(250.dp) | |
| .aspectRatio(3 / 4f) | |
| .scale(imgScale) | |
| .clip(RoundedCornerShape(8.dp)), | |
| painter = painterResource(id = places[index].resId), | |
| contentDescription = null, | |
| contentScale = ContentScale.Crop | |
| ) | |
| // Reflected image (flip Y-axis + gradient blend) | |
| Image( | |
| painter = painterResource(id = places[index].resId), | |
| contentDescription = null, | |
| contentScale = ContentScale.Crop, | |
| modifier = Modifier | |
| .height(250.dp) | |
| .aspectRatio(3 / 4f) | |
| .offset(y = imgOffset) | |
| .scale(imgScale, -imgScale) | |
| .clip(RoundedCornerShape(8.dp)) | |
| .graphicsLayer { | |
| alpha = reflectionAlpha | |
| } | |
| .drawWithContent { | |
| val overlayColors = | |
| listOf( | |
| Color.Transparent, | |
| Color.Transparent, | |
| Color.Transparent, | |
| Color.White | |
| ) | |
| drawContent() | |
| drawRect( | |
| brush = Brush.verticalGradient(overlayColors), | |
| blendMode = BlendMode.DstIn | |
| ) | |
| } | |
| ) | |
| } | |
| } | |
| } | |
| } | |
| @Preview | |
| @Composable | |
| private fun ReflectionAnimationPreview() { | |
| ReflectionAnimation() | |
| } |
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