Small UI improvements for tiles

- Animate color change between states
- Add different colors for dual target tiles to show the inactive circle
- Better transition between icon and large tiles when resizing
- Different icon sizes for icon and large tiles

Test: manually
Flag: com.android.systemui.qs_ui_refactor_compose_fragment
Bug: 331601141
Change-Id: I32b09f561a4f8ef170bc5e1fa1082e91502d1065
diff --git a/packages/SystemUI/compose/features/src/com/android/systemui/common/ui/compose/Icon.kt b/packages/SystemUI/compose/features/src/com/android/systemui/common/ui/compose/Icon.kt
index 6e83124..82d1436 100644
--- a/packages/SystemUI/compose/features/src/com/android/systemui/common/ui/compose/Icon.kt
+++ b/packages/SystemUI/compose/features/src/com/android/systemui/common/ui/compose/Icon.kt
@@ -32,11 +32,7 @@
  * Note: You can use [Color.Unspecified] to disable the tint and keep the original icon colors.
  */
 @Composable
-fun Icon(
-    icon: Icon,
-    modifier: Modifier = Modifier,
-    tint: Color = LocalContentColor.current,
-) {
+fun Icon(icon: Icon, modifier: Modifier = Modifier, tint: Color = LocalContentColor.current) {
     val contentDescription = icon.contentDescription?.load()
     when (icon) {
         is Icon.Loaded -> {
diff --git a/packages/SystemUI/src/com/android/systemui/qs/panels/ui/compose/infinitegrid/CommonTile.kt b/packages/SystemUI/src/com/android/systemui/qs/panels/ui/compose/infinitegrid/CommonTile.kt
index 978a353..d107222 100644
--- a/packages/SystemUI/src/com/android/systemui/qs/panels/ui/compose/infinitegrid/CommonTile.kt
+++ b/packages/SystemUI/src/com/android/systemui/qs/panels/ui/compose/infinitegrid/CommonTile.kt
@@ -18,12 +18,12 @@
 
 import android.graphics.drawable.Animatable
 import android.text.TextUtils
+import androidx.compose.animation.animateColorAsState
 import androidx.compose.animation.graphics.ExperimentalAnimationGraphicsApi
 import androidx.compose.animation.graphics.res.animatedVectorResource
 import androidx.compose.animation.graphics.res.rememberAnimatedVectorPainter
 import androidx.compose.animation.graphics.vector.AnimatedImageVector
 import androidx.compose.foundation.Image
-import androidx.compose.foundation.background
 import androidx.compose.foundation.combinedClickable
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
@@ -32,8 +32,9 @@
 import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.shape.RoundedCornerShape
+import androidx.compose.foundation.text.BasicText
+import androidx.compose.material3.Icon
 import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
@@ -44,6 +45,7 @@
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
+import androidx.compose.ui.draw.drawBehind
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.ColorFilter
 import androidx.compose.ui.graphics.Shape
@@ -57,7 +59,9 @@
 import androidx.compose.ui.semantics.stateDescription
 import androidx.compose.ui.semantics.toggleableState
 import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.unit.dp
+import com.android.compose.modifiers.size
 import com.android.compose.modifiers.thenIf
 import com.android.systemui.Flags
 import com.android.systemui.common.shared.model.Icon
@@ -88,12 +92,14 @@
     ) {
         // Icon
         val longPressLabel = longPressLabel().takeIf { onLongClick != null }
+        val animatedBackgroundColor by
+            animateColorAsState(colors.iconBackground, label = "QSTileDualTargetBackgroundColor")
         Box(
             modifier =
                 Modifier.size(CommonTileDefaults.ToggleTargetSize).thenIf(toggleClick != null) {
                     Modifier.clip(iconShape)
                         .verticalSquish(squishiness)
-                        .background(colors.iconBackground)
+                        .drawBehind { drawRect(animatedBackgroundColor) }
                         .combinedClickable(
                             onClick = toggleClick!!,
                             onLongClick = onLongClick,
@@ -117,6 +123,7 @@
             SmallTileContent(
                 icon = icon,
                 color = colors.icon,
+                size = { CommonTileDefaults.LargeTileIconSize },
                 modifier = Modifier.align(Alignment.Center),
             )
         }
@@ -139,18 +146,22 @@
     modifier: Modifier = Modifier,
     accessibilityUiState: AccessibilityUiState? = null,
 ) {
+    val animatedLabelColor by animateColorAsState(colors.label, label = "QSTileLabelColor")
+    val animatedSecondaryLabelColor by
+        animateColorAsState(colors.secondaryLabel, label = "QSTileSecondaryLabelColor")
     Column(verticalArrangement = Arrangement.Center, modifier = modifier.fillMaxHeight()) {
-        Text(
+        BasicText(
             label,
             style = MaterialTheme.typography.labelLarge,
-            color = colors.label,
+            color = { animatedLabelColor },
             maxLines = 1,
             overflow = TextOverflow.Ellipsis,
         )
         if (!TextUtils.isEmpty(secondaryLabel)) {
-            Text(
+            BasicText(
                 secondaryLabel ?: "",
-                color = colors.secondaryLabel,
+                color = { animatedSecondaryLabelColor },
+                maxLines = 1,
                 style = MaterialTheme.typography.bodyMedium,
                 modifier =
                     Modifier.thenIf(
@@ -170,9 +181,11 @@
     modifier: Modifier = Modifier,
     icon: Icon,
     color: Color,
+    size: () -> Dp = { CommonTileDefaults.IconSize },
     animateToEnd: Boolean = false,
 ) {
-    val iconModifier = modifier.size(CommonTileDefaults.IconSize)
+    val animatedColor by animateColorAsState(color, label = "QSTileIconColor")
+    val iconModifier = modifier.size({ size().roundToPx() }, { size().roundToPx() })
     val context = LocalContext.current
     val loadedDrawable =
         remember(icon, context) {
@@ -182,7 +195,7 @@
             }
         }
     if (loadedDrawable !is Animatable) {
-        Icon(icon = icon, tint = color, modifier = iconModifier)
+        Icon(icon = icon, tint = animatedColor, modifier = iconModifier)
     } else if (icon is Icon.Resource) {
         val image = AnimatedImageVector.animatedVectorResource(id = icon.res)
         val painter =
@@ -198,14 +211,15 @@
         Image(
             painter = painter,
             contentDescription = icon.contentDescription?.load(),
-            colorFilter = ColorFilter.tint(color = color),
+            colorFilter = ColorFilter.tint(color = animatedColor),
             modifier = iconModifier,
         )
     }
 }
 
 object CommonTileDefaults {
-    val IconSize = 24.dp
+    val IconSize = 32.dp
+    val LargeTileIconSize = 28.dp
     val ToggleTargetSize = 56.dp
     val TileHeight = 72.dp
     val TilePadding = 8.dp
diff --git a/packages/SystemUI/src/com/android/systemui/qs/panels/ui/compose/infinitegrid/EditTile.kt b/packages/SystemUI/src/com/android/systemui/qs/panels/ui/compose/infinitegrid/EditTile.kt
index 418ed0b..36a7b22 100644
--- a/packages/SystemUI/src/com/android/systemui/qs/panels/ui/compose/infinitegrid/EditTile.kt
+++ b/packages/SystemUI/src/com/android/systemui/qs/panels/ui/compose/infinitegrid/EditTile.kt
@@ -20,6 +20,7 @@
 
 import androidx.compose.animation.AnimatedContent
 import androidx.compose.animation.AnimatedVisibility
+import androidx.compose.animation.core.Animatable
 import androidx.compose.animation.core.animateDpAsState
 import androidx.compose.animation.core.animateFloatAsState
 import androidx.compose.animation.fadeIn
@@ -54,7 +55,6 @@
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.automirrored.filled.ArrowBack
-import androidx.compose.material.icons.filled.ArrowBack
 import androidx.compose.material.icons.filled.Clear
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.Icon
@@ -69,21 +69,22 @@
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.runtime.LaunchedEffect
-import androidx.compose.runtime.derivedStateOf
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.rememberUpdatedState
 import androidx.compose.runtime.setValue
+import androidx.compose.runtime.snapshotFlow
 import androidx.compose.ui.Alignment
-import androidx.compose.ui.BiasAlignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
 import androidx.compose.ui.draw.drawBehind
-import androidx.compose.ui.geometry.CornerRadius
 import androidx.compose.ui.geometry.Offset
 import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.graphics.SolidColor
+import androidx.compose.ui.graphics.graphicsLayer
+import androidx.compose.ui.layout.MeasureScope
+import androidx.compose.ui.layout.layout
 import androidx.compose.ui.layout.onGloballyPositioned
 import androidx.compose.ui.layout.onSizeChanged
 import androidx.compose.ui.layout.positionInRoot
@@ -103,6 +104,7 @@
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import androidx.compose.ui.util.fastMap
+import com.android.app.tracing.coroutines.launchTraced as launch
 import com.android.compose.animation.bounceable
 import com.android.compose.modifiers.height
 import com.android.systemui.common.ui.compose.load
@@ -134,9 +136,10 @@
 import com.android.systemui.qs.pipeline.shared.TileSpec
 import com.android.systemui.qs.shared.model.groupAndSort
 import com.android.systemui.res.R
+import kotlin.math.roundToInt
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.delay
-import com.android.app.tracing.coroutines.launchTraced as launch
+import kotlinx.coroutines.flow.collectLatest
 
 object TileType
 
@@ -409,7 +412,7 @@
 /**
  * Adds a list of [GridCell] to the lazy grid
  *
- * @param cells the pairs of [GridCell] to [BounceableTileViewModel]
+ * @param cells the pairs of [GridCell] to [AnimatableTileViewModel]
  * @param dragAndDropState the [DragAndDropState] for this grid
  * @param selectionState the [MutableSelectionState] for this grid
  * @param onToggleSize the callback when a tile's size is toggled
@@ -545,9 +548,27 @@
                     selectionState::unSelect,
                 )
                 .tileBackground(colors.background)
-                .tilePadding()
         ) {
-            EditTile(tile = cell.tile, iconOnly = cell.isIcon)
+            val targetValue = if (cell.isIcon) 0f else 1f
+            val animatedProgress = remember { Animatable(targetValue) }
+
+            if (selected) {
+                val resizingState = selectionState.resizingState
+                LaunchedEffect(targetValue, resizingState) {
+                    if (resizingState == null) {
+                        animatedProgress.animateTo(targetValue)
+                    } else {
+                        snapshotFlow { resizingState.progression }
+                            .collectLatest { animatedProgress.snapTo(it) }
+                    }
+                }
+            }
+
+            EditTile(
+                tile = cell.tile,
+                tileWidths = { tileWidths },
+                progress = { animatedProgress.value },
+            )
         }
     }
 }
@@ -612,45 +633,72 @@
 }
 
 @Composable
-fun BoxScope.EditTile(
+fun EditTile(
     tile: EditTileViewModel,
-    iconOnly: Boolean,
+    tileWidths: () -> TileWidths?,
+    progress: () -> Float,
     colors: TileColors = EditModeTileDefaults.editTileColors(),
 ) {
-    // Animated horizontal alignment from center (0f) to start (-1f)
-    val alignmentValue by
-        animateFloatAsState(
-            targetValue = if (iconOnly) 0f else -1f,
-            label = "QSEditTileContentAlignment",
-        )
-    val alignment by remember {
-        derivedStateOf { BiasAlignment(horizontalBias = alignmentValue, verticalBias = 0f) }
-    }
-    // Icon
-    Box(Modifier.size(ToggleTargetSize).align(alignment)) {
-        SmallTileContent(
-            icon = tile.icon,
-            color = colors.icon,
-            animateToEnd = true,
-            modifier = Modifier.align(Alignment.Center),
-        )
-    }
+    val iconSizeDiff = CommonTileDefaults.IconSize - CommonTileDefaults.LargeTileIconSize
+    Row(
+        horizontalArrangement = spacedBy(6.dp),
+        verticalAlignment = Alignment.CenterVertically,
+        modifier =
+            Modifier.layout { measurable, constraints ->
+                    // Always display the tile using the large size and trust the parent composable
+                    // to clip the content as needed. This stop the labels from being truncated.
+                    val width = tileWidths()?.max ?: constraints.maxWidth
+                    val placeable =
+                        measurable.measure(constraints.copy(minWidth = width, maxWidth = width))
+                    val currentProgress = progress()
+                    val startPadding =
+                        if (currentProgress == 0f) {
+                            // Find the center of the max width when the tile is icon only
+                            iconHorizontalCenter(constraints.maxWidth)
+                        } else {
+                            // Find the center of the minimum width to hold the same position as the
+                            // tile is resized.
+                            val basePadding =
+                                tileWidths()?.min?.let { iconHorizontalCenter(it) } ?: 0f
+                            // Large tiles, represented with a progress of 1f, have a 0.dp padding
+                            basePadding * (1f - currentProgress)
+                        }
 
-    // Labels, positioned after the icon
-    AnimatedVisibility(visible = !iconOnly, enter = fadeIn(), exit = fadeOut()) {
+                    layout(constraints.maxWidth, constraints.maxHeight) {
+                        placeable.place(startPadding.roundToInt(), 0)
+                    }
+                }
+                .tilePadding(),
+    ) {
+        // Icon
+        Box(Modifier.size(ToggleTargetSize)) {
+            SmallTileContent(
+                icon = tile.icon,
+                color = colors.icon,
+                animateToEnd = true,
+                size = { CommonTileDefaults.IconSize - iconSizeDiff * progress() },
+                modifier = Modifier.align(Alignment.Center),
+            )
+        }
+
+        // Labels, positioned after the icon
         LargeTileLabels(
             label = tile.label.text,
             secondaryLabel = tile.appName?.text,
             colors = colors,
-            modifier = Modifier.padding(start = ToggleTargetSize + TileArrangementPadding),
+            modifier = Modifier.weight(1f).graphicsLayer { alpha = progress() },
         )
     }
 }
 
+private fun MeasureScope.iconHorizontalCenter(containerSize: Int): Float {
+    return (containerSize - ToggleTargetSize.roundToPx()) / 2f -
+        CommonTileDefaults.TilePadding.toPx()
+}
+
 private fun Modifier.tileBackground(color: Color): Modifier {
-    return drawBehind {
-        drawRoundRect(SolidColor(color), cornerRadius = CornerRadius(InactiveCornerRadius.toPx()))
-    }
+    // Clip tile contents from overflowing past the tile
+    return clip(RoundedCornerShape(InactiveCornerRadius)).drawBehind { drawRect(color) }
 }
 
 private object EditModeTileDefaults {
diff --git a/packages/SystemUI/src/com/android/systemui/qs/panels/ui/compose/infinitegrid/Tile.kt b/packages/SystemUI/src/com/android/systemui/qs/panels/ui/compose/infinitegrid/Tile.kt
index e1583e3..5bebdbc 100644
--- a/packages/SystemUI/src/com/android/systemui/qs/panels/ui/compose/infinitegrid/Tile.kt
+++ b/packages/SystemUI/src/com/android/systemui/qs/panels/ui/compose/infinitegrid/Tile.kt
@@ -21,6 +21,7 @@
 import android.content.res.Resources
 import android.service.quicksettings.Tile.STATE_ACTIVE
 import android.service.quicksettings.Tile.STATE_INACTIVE
+import androidx.compose.animation.animateColorAsState
 import androidx.compose.animation.core.animateDpAsState
 import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.combinedClickable
@@ -61,6 +62,7 @@
 import androidx.compose.ui.unit.Dp
 import androidx.compose.ui.unit.dp
 import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import com.android.app.tracing.coroutines.launchTraced as launch
 import com.android.compose.animation.Expandable
 import com.android.compose.animation.bounceable
 import com.android.compose.modifiers.thenIf
@@ -74,6 +76,7 @@
 import com.android.systemui.plugins.qs.QSTile
 import com.android.systemui.qs.panels.ui.compose.BounceableInfo
 import com.android.systemui.qs.panels.ui.compose.infinitegrid.CommonTileDefaults.InactiveCornerRadius
+import com.android.systemui.qs.panels.ui.compose.infinitegrid.CommonTileDefaults.TileHeight
 import com.android.systemui.qs.panels.ui.compose.infinitegrid.CommonTileDefaults.longPressLabel
 import com.android.systemui.qs.panels.ui.viewmodel.TileUiState
 import com.android.systemui.qs.panels.ui.viewmodel.TileViewModel
@@ -82,7 +85,6 @@
 import com.android.systemui.res.R
 import java.util.function.Supplier
 import kotlinx.coroutines.CoroutineScope
-import com.android.app.tracing.coroutines.launchTraced as launch
 
 private const val TEST_TAG_SMALL = "qs_tile_small"
 private const val TEST_TAG_LARGE = "qs_tile_large"
@@ -128,14 +130,18 @@
 
     // TODO(b/361789146): Draw the shapes instead of clipping
     val tileShape = TileDefaults.animateTileShape(uiState.state)
-
-    TileExpandable(
-        color =
+    val animatedColor by
+        animateColorAsState(
             if (iconOnly || !uiState.handlesSecondaryClick) {
                 colors.iconBackground
             } else {
                 colors.background
             },
+            label = "QSTileBackgroundColor",
+        )
+
+    TileExpandable(
+        color = { animatedColor },
         shape = tileShape,
         squishiness = squishiness,
         hapticsViewModel = hapticsViewModel,
@@ -212,7 +218,7 @@
 
 @Composable
 private fun TileExpandable(
-    color: Color,
+    color: () -> Color,
     shape: Shape,
     squishiness: () -> Float,
     hapticsViewModel: TileHapticsViewModel?,
@@ -220,7 +226,7 @@
     content: @Composable (Expandable) -> Unit,
 ) {
     Expandable(
-        color = color,
+        color = color(),
         shape = shape,
         modifier = modifier.clip(shape).verticalSquish(squishiness),
     ) {
@@ -238,7 +244,7 @@
 ) {
     Box(
         modifier =
-            Modifier.height(CommonTileDefaults.TileHeight)
+            Modifier.height(TileHeight)
                 .fillMaxWidth()
                 .tileCombinedClickable(
                     onClick = onClick,
@@ -336,6 +342,16 @@
         )
 
     @Composable
+    fun inactiveDualTargetTileColors(): TileColors =
+        TileColors(
+            background = MaterialTheme.colorScheme.surfaceVariant,
+            iconBackground = MaterialTheme.colorScheme.surfaceContainerHighest,
+            label = MaterialTheme.colorScheme.onSurfaceVariant,
+            secondaryLabel = MaterialTheme.colorScheme.onSurfaceVariant,
+            icon = MaterialTheme.colorScheme.onSurfaceVariant,
+        )
+
+    @Composable
     fun inactiveTileColors(): TileColors =
         TileColors(
             background = MaterialTheme.colorScheme.surfaceVariant,
@@ -365,7 +381,13 @@
                     activeTileColors()
                 }
             }
-            STATE_INACTIVE -> inactiveTileColors()
+            STATE_INACTIVE -> {
+                if (uiState.handlesSecondaryClick) {
+                    inactiveDualTargetTileColors()
+                } else {
+                    inactiveTileColors()
+                }
+            }
             else -> unavailableTileColors()
         }
     }
diff --git a/packages/SystemUI/src/com/android/systemui/qs/panels/ui/compose/selection/ResizingState.kt b/packages/SystemUI/src/com/android/systemui/qs/panels/ui/compose/selection/ResizingState.kt
index a084bc2..9552aa9 100644
--- a/packages/SystemUI/src/com/android/systemui/qs/panels/ui/compose/selection/ResizingState.kt
+++ b/packages/SystemUI/src/com/android/systemui/qs/panels/ui/compose/selection/ResizingState.kt
@@ -17,25 +17,30 @@
 package com.android.systemui.qs.panels.ui.compose.selection
 
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableFloatStateOf
 import androidx.compose.runtime.mutableIntStateOf
 import androidx.compose.runtime.setValue
 import com.android.systemui.qs.panels.ui.compose.selection.ResizingDefaults.RESIZING_THRESHOLD
 
 class ResizingState(private val widths: TileWidths, private val onResize: () -> Unit) {
-    // Total drag offset of this resize operation
-    private var totalOffset = 0f
+    /** Total drag offset of this resize operation. */
+    private var totalOffset by mutableFloatStateOf(0f)
 
     /** Width in pixels of the resizing tile. */
     var width by mutableIntStateOf(widths.base)
 
+    /** Progression between icon (0) and large (1) sizes. */
+    val progression
+        get() = calculateProgression()
+
     // Whether the tile is currently over the threshold and should be a large tile
-    private var passedThreshold: Boolean = passedThreshold(calculateProgression(width))
+    private var passedThreshold: Boolean = passedThreshold(progression)
 
     fun onDrag(offset: Float) {
         totalOffset += offset
         width = (widths.base + totalOffset).toInt().coerceIn(widths.min, widths.max)
 
-        passedThreshold(calculateProgression(width)).let {
+        passedThreshold(progression).let {
             // Resize if we went over the threshold
             if (passedThreshold != it) {
                 passedThreshold = it
@@ -49,7 +54,7 @@
     }
 
     /** The progression of the resizing tile between an icon tile (0f) and a large tile (1f) */
-    private fun calculateProgression(width: Int): Float {
+    private fun calculateProgression(): Float {
         return ((width - widths.min) / (widths.max - widths.min).toFloat()).coerceIn(0f, 1f)
     }
 }
diff --git a/packages/SystemUI/src/com/android/systemui/qs/panels/ui/compose/selection/Selection.kt b/packages/SystemUI/src/com/android/systemui/qs/panels/ui/compose/selection/Selection.kt
index 9f13a37..8a345ce 100644
--- a/packages/SystemUI/src/com/android/systemui/qs/panels/ui/compose/selection/Selection.kt
+++ b/packages/SystemUI/src/com/android/systemui/qs/panels/ui/compose/selection/Selection.kt
@@ -16,7 +16,11 @@
 
 package com.android.systemui.qs.panels.ui.compose.selection
 
+import androidx.compose.animation.core.Spring
+import androidx.compose.animation.core.animateDpAsState
+import androidx.compose.animation.core.animateFloatAsState
 import androidx.compose.animation.core.animateIntAsState
+import androidx.compose.animation.core.spring
 import androidx.compose.foundation.Canvas
 import androidx.compose.foundation.gestures.detectHorizontalDragGestures
 import androidx.compose.foundation.layout.Box
@@ -78,7 +82,6 @@
         ResizingHandle(
             enabled = selected,
             selectionState = selectionState,
-            transition = selectionAlpha,
             tileWidths = tileWidths,
             modifier =
                 // Higher zIndex to make sure the handle is drawn above the content
@@ -91,7 +94,6 @@
 private fun ResizingHandle(
     enabled: Boolean,
     selectionState: MutableSelectionState,
-    transition: () -> Float,
     tileWidths: () -> TileWidths?,
     modifier: Modifier = Modifier,
 ) {
@@ -126,19 +128,24 @@
                     }
             }
     ) {
-        ResizingDot(transition = transition, modifier = Modifier.align(Alignment.Center))
+        ResizingDot(enabled = enabled, modifier = Modifier.align(Alignment.Center))
     }
 }
 
 @Composable
 private fun ResizingDot(
-    transition: () -> Float,
+    enabled: Boolean,
     modifier: Modifier = Modifier,
     color: Color = MaterialTheme.colorScheme.primary,
 ) {
+    val alpha by animateFloatAsState(if (enabled) 1f else 0f)
+    val radius by
+        animateDpAsState(
+            if (enabled) ResizingDotSize / 2 else 0.dp,
+            animationSpec = spring(dampingRatio = Spring.DampingRatioMediumBouncy),
+        )
     Canvas(modifier = modifier.size(ResizingDotSize)) {
-        val v = transition()
-        drawCircle(color = color, radius = (ResizingDotSize / 2).toPx() * v, alpha = v)
+        drawCircle(color = color, radius = radius.toPx(), alpha = alpha)
     }
 }