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transitionAnimationDemos.kt
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transitionAnimationDemos.kt
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package co.joebirch.composeplayground.animation
import androidx.compose.foundation.layout.*
import androidx.compose.runtime.Composable
import androidx.compose.ui.Alignment
import androidx.compose.ui.Modifier
import androidx.compose.ui.unit.dp
import co.joebirch.composeplayground.ComposableLayout
object TransitionDemoView : ComposableLayout {
@Composable
override fun build() {
Column(
modifier = Modifier.fillMaxSize().padding(32.dp),
verticalArrangement = Arrangement.SpaceEvenly,
horizontalAlignment = Alignment.CenterHorizontally
) {
}
}
/*
val sizeState = FloatPropKey()
enum class AnimationType {
SNAP, TWEEN, PHYSICS, REPEATABLE, KEYFRAME
}
@Composable
override fun build() {
Column(
modifier = Modifier.fillMaxSize().padding(32.dp),
verticalArrangement = Arrangement.SpaceEvenly,
horizontalAlignment = Alignment.CenterHorizontally
) {
val animationType = remember { mutableStateOf(AnimationType.SNAP) }
val toState = remember { mutableStateOf(CircleStatus.Shrinking) }
val transitionDef = sizeTransitionDefinition(animationType.value)
Column {
Row(
modifier = Modifier.selectable(selected =
animationType.value == AnimationType.SNAP, onClick = {
animationType.value = AnimationType.SNAP
})
) {
RadioButton(selected = animationType.value == AnimationType.SNAP, onClick = {
animationType.value = AnimationType.SNAP
})
Text(text = "Snap")
}
Row(
modifier = Modifier.selectable(selected =
animationType.value == AnimationType.TWEEN, onClick = {
animationType.value = AnimationType.TWEEN
})
) {
RadioButton(selected = animationType.value == AnimationType.TWEEN, onClick = {
animationType.value = AnimationType.TWEEN
})
Text(text = "Tween")
}
Row(
modifier = Modifier.selectable(selected =
animationType.value == AnimationType.PHYSICS, onClick = {
animationType.value = AnimationType.PHYSICS
})
) {
RadioButton(selected = animationType.value == AnimationType.PHYSICS, onClick = {
animationType.value = AnimationType.PHYSICS
})
Text(text = "Physics")
}
Row(
modifier = Modifier.selectable(selected =
animationType.value == AnimationType.REPEATABLE, onClick = {
animationType.value = AnimationType.REPEATABLE
})
) {
RadioButton(
selected = animationType.value == AnimationType.REPEATABLE,
onClick = {
animationType.value = AnimationType.REPEATABLE
})
Text(text = "Repeatable")
}
Row(
modifier = Modifier.selectable(selected =
animationType.value == AnimationType.KEYFRAME, onClick = {
animationType.value = AnimationType.KEYFRAME
})
) {
RadioButton(
selected = animationType.value == AnimationType.KEYFRAME,
onClick = {
animationType.value = AnimationType.KEYFRAME
})
Text(text = "Keyframe")
}
}
Button(onClick = {
if (toState.value == CircleStatus.Shrinking) {
toState.value = CircleStatus.Growing
} else {
toState.value = CircleStatus.Shrinking
}
}, modifier = Modifier.padding(16.dp)) {
Text("Animate!")
}
Box(
modifier = Modifier.fillMaxSize()
.align(Alignment.CenterHorizontally)
) {
val state = transition(
definition = transitionDef,
toState = toState.value
)
Canvas(modifier = Modifier.preferredSize(80.dp)) {
drawCircle(Color.Red, state[sizeState])
}
}
}
}
enum class CircleStatus {
Growing,
Shrinking
}
private fun sizeTransitionDefinition(animationType: AnimationType): TransitionDefinition<CircleStatus> {
return transitionDefinition {
state(CircleStatus.Shrinking) { this[sizeState] = 50f }
state(CircleStatus.Growing) { this[sizeState] = 175f }
when (animationType) {
AnimationType.SNAP -> {
snapTransition(CircleStatus.Shrinking to CircleStatus.Growing)
snapTransition(CircleStatus.Growing to CircleStatus.Shrinking)
}
AnimationType.REPEATABLE -> {
transition(fromState = CircleStatus.Shrinking, toState = CircleStatus.Growing) {
sizeState using repeatable(
iterations = Infinite,
animation = tween(
easing = LinearEasing,
durationMillis = 1000
)
)
}
transition(fromState = CircleStatus.Growing, toState = CircleStatus.Shrinking) {
sizeState using repeatable(
iterations = Infinite,
animation = tween(
easing = LinearEasing,
durationMillis = 1000
),
)
}
}
AnimationType.PHYSICS -> {
transition(fromState = CircleStatus.Shrinking, toState = CircleStatus.Growing) {
sizeState using spring(
stiffness = 5f,
dampingRatio = 5f
)
}
transition(fromState = CircleStatus.Growing, toState = CircleStatus.Shrinking) {
sizeState using spring(
stiffness = 5f,
dampingRatio = 5f
)
}
}
AnimationType.TWEEN -> {
transition(fromState = CircleStatus.Shrinking, toState = CircleStatus.Growing) {
sizeState using tween(
durationMillis = 2000,
easing = FastOutLinearInEasing
)
}
transition(fromState = CircleStatus.Growing, toState = CircleStatus.Shrinking) {
sizeState using tween(
durationMillis = 2000,
easing = LinearOutSlowInEasing,
delayMillis = 200
)
}
}
AnimationType.KEYFRAME -> {
transition(fromState = CircleStatus.Shrinking, toState = CircleStatus.Growing) {
sizeState using keyframes {
50f at 200
60f at 2200
175f at 2500
}
}
transition(fromState = CircleStatus.Growing, toState = CircleStatus.Shrinking) {
sizeState using keyframes {
175f at 200
160f at 300
100f at 750
80f at 700
50f at 500
}
}
}
}
}
}
*/
}