add: [SuperDropdown] Close popup automatically.

fix: [SuperDropdown] Limit popup size and margins.
update: [SuperDropdown] Popup content padding, rounded corners, font size

Author: HowieHChen

miuix/src/commonMain/kotlin/top/yukonga/miuix/kmp/extra/SuperDropdown.kt

@@ -1,5 +1,7 @@
 package top.yukonga.miuix.kmp.extra
 
+import androidx.compose.animation.animateColorAsState
+import androidx.compose.animation.core.spring
 import androidx.compose.foundation.Image
 import androidx.compose.foundation.background
 import androidx.compose.foundation.clickable
@@ -12,16 +14,19 @@ import androidx.compose.foundation.layout.asPaddingValues
 import androidx.compose.foundation.layout.captionBar
 import androidx.compose.foundation.layout.displayCutout
 import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.heightIn
 import androidx.compose.foundation.layout.navigationBars
 import androidx.compose.foundation.layout.offset
 import androidx.compose.foundation.layout.only
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.layout.statusBars
 import androidx.compose.foundation.layout.width
+import androidx.compose.foundation.layout.widthIn
 import androidx.compose.foundation.layout.windowInsetsPadding
 import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.DisposableEffect
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.MutableState
 import androidx.compose.runtime.getValue
@@ -107,15 +112,18 @@ fun SuperDropdown(
     val isDropdownExpanded = remember { mutableStateOf(false) }
     val hapticFeedback = LocalHapticFeedback.current
     val actionColor = if (enabled) MiuixTheme.colorScheme.onSurfaceVariantActions else MiuixTheme.colorScheme.disabledOnSecondaryVariant
+    val targetColor = if (isDropdownExpanded.value) MiuixTheme.colorScheme.selectedTint else Color.Transparent
+    val selectedTint by animateColorAsState(targetValue = targetColor, animationSpec = spring(stiffness = 2000f))
     var alignLeft by rememberSaveable { mutableStateOf(true) }
     var dropdownOffsetXPx by remember { mutableStateOf(0) }
     var dropdownOffsetYPx by remember { mutableStateOf(0) }
     var componentHeightPx by remember { mutableStateOf(0) }
     var componentWidthPx by remember { mutableStateOf(0) }
-    val touchTint = remember { mutableStateOf(Color.Transparent) }
 
-    isDropdownExpanded.value.let {
-        touchTint.value = if (it) MiuixTheme.colorScheme.touchTint else Color.Transparent
+    DisposableEffect(Unit) {
+        onDispose {
+            dismissPopup(isDropdownExpanded)
+        }
     }
 
     BasicComponent(
@@ -140,7 +148,7 @@ fun SuperDropdown(
                     componentWidthPx = coordinates.size.width
                 }
             }
-            .background(touchTint.value),
+            .background(selectedTint),
         insideMargin = insideMargin,
         title = title,
         titleColor = titleColor,
@@ -196,6 +204,9 @@ fun SuperDropdown(
         val captionBarPx by rememberUpdatedState(
             with(density) { WindowInsets.captionBar.asPaddingValues().calculateBottomPadding().toPx() }.roundToInt()
         )
+        val dropdownMaxHeight by rememberUpdatedState(with(density) {
+            (windowHeightPx - statusBarPx - navigationBarPx - captionBarPx ).toDp()
+        })
         val insideWidthPx by rememberUpdatedState(with(density){ insideMargin.width.toPx() }.roundToInt())
         val insideHeightPx by rememberUpdatedState(with(density) { insideMargin.height.toPx() }.roundToInt())
         val displayCutoutLeftSize = rememberUpdatedState(with(density) {
@@ -243,12 +254,15 @@ fun SuperDropdown(
                                     captionBarPx
                                 )
                             }
+                            .heightIn(50.dp, dropdownMaxHeight)
                             .align(AbsoluteAlignment.TopLeft)
                             .graphicsLayer(
-                                shadowElevation = 18f,
-                                shape = SmoothRoundedCornerShape(18.dp)
+                                shadowElevation = 40f,
+                                shape = SmoothRoundedCornerShape(16.dp),
+                                ambientShadowColor = MiuixTheme.colorScheme.onBackground.copy(alpha = 0.2f),
+                                spotShadowColor =  MiuixTheme.colorScheme.onBackground.copy(alpha = 0.6f)
                             )
-                            .clip(SmoothRoundedCornerShape(18.dp))
+                            .clip(SmoothRoundedCornerShape(16.dp))
                             .background(MiuixTheme.colorScheme.surface)
                     ) {
                         item {
@@ -293,8 +307,15 @@ fun DropdownImpl(
     onSelectedIndexChange: (Int) -> Unit,
     textWidthDp: Dp?
 ) {
-    val additionalTopPadding = if (index == 0) 24.dp else 14.dp
-    val additionalBottomPadding = if (index == optionSize - 1) 24.dp else 14.dp
+    val additionalTopPadding: Dp
+    val additionalBottomPadding: Dp
+    if (optionSize == 1) {
+        additionalTopPadding = 16.dp
+        additionalBottomPadding = 16.dp
+    } else {
+        additionalTopPadding = if (index == 0) 22.5f.dp else 14.5f.dp
+        additionalBottomPadding = if (index == optionSize - 1) 22.5f.dp else 14.5f.dp
+    }
     val textColor = if (isSelected) {
         MiuixTheme.colorScheme.onTertiaryContainer
     } else {
@@ -318,18 +339,19 @@ fun DropdownImpl(
                 onSelectedIndexChange(index)
             }
             .background(backgroundColor)
-            .padding(horizontal = 24.dp)
+            .widthIn(200.dp, 288.dp)
+            .padding(horizontal = 20.dp)
             .padding(top = additionalTopPadding, bottom = additionalBottomPadding)
     ) {
         Text(
             modifier = Modifier.width(textWidthDp ?: 50.dp),
             text = text,
-            fontSize = 15.sp,
+            fontSize = 16.sp,
             fontWeight = FontWeight.Medium,
             color = textColor,
         )
         Image(
-            modifier = Modifier.padding(start = 50.dp).size(20.dp),
+            modifier = Modifier.padding(start = 12.dp).size(20.dp),
             imageVector = MiuixIcons.Check,
             colorFilter = BlendModeColorFilter(selectColor, BlendMode.SrcIn),
             contentDescription = null,
@@ -368,7 +390,7 @@ fun calculateOffsetYPx(
         dropdownOffsetPx - dropdownHeightPx  + insideHeightPx / 2
     } else if (windowHeightPx - statusBarPx - captionBarPx - navigationBarPx <= dropdownHeightPx)  {
         // Special handling when the height of the popup is maxsize (== windowHeightPx)
-        0
+        statusBarPx
     } else if (windowHeightPx - dropdownOffsetPx < dropdownHeightPx / 2 + captionBarPx + navigationBarPx + insideHeightPx + componentHeightPx / 2) {
         windowHeightPx - dropdownHeightPx - insideHeightPx - captionBarPx - navigationBarPx
     } else {

miuix/src/commonMain/kotlin/top/yukonga/miuix/kmp/theme/MiuixColor.kt

@@ -103,7 +103,8 @@ class MiuixColor(
     onSurfaceContainerHigh: Color,
     surfaceContainerHighest: Color,
     onSurfaceContainerHighest: Color,
-    windowDimming: Color
+    windowDimming: Color,
+    selectedTint: Color,
 ) {
     val primary by mutableStateOf(primary, structuralEqualityPolicy())
     val onPrimary by mutableStateOf(onPrimary, structuralEqualityPolicy())
@@ -151,6 +152,7 @@ class MiuixColor(
     val surfaceContainerHighest by mutableStateOf(surfaceContainerHighest, structuralEqualityPolicy())
     val onSurfaceContainerHighest by mutableStateOf(onSurfaceContainerHighest, structuralEqualityPolicy())
     val windowDimming by mutableStateOf(windowDimming, structuralEqualityPolicy())
+    val selectedTint by mutableStateOf(selectedTint, structuralEqualityPolicy())
 }
 
 fun lightColorScheme() = MiuixColor(
@@ -199,7 +201,8 @@ fun lightColorScheme() = MiuixColor(
     onSurfaceContainerHigh = Color(0xFFA5A5A5),
     surfaceContainerHighest = Color(0xFFE8E8E8),
     onSurfaceContainerHighest = Color.Black,
-    windowDimming = Color.Black.copy(alpha = 0.3f)
+    windowDimming = Color.Black.copy(alpha = 0.3f),
+    selectedTint = Color(0x14000000)
 )
 
 fun darkColorScheme() = MiuixColor(
@@ -248,5 +251,6 @@ fun darkColorScheme() = MiuixColor(
     onSurfaceContainerHigh = Color(0xFF6C6C6C),
     surfaceContainerHighest = Color(0xFF2D2D2D),
     onSurfaceContainerHighest = Color(0xFFE9E9E9),
-    windowDimming = Color.Black.copy(alpha = 0.6f)
+    windowDimming = Color.Black.copy(alpha = 0.3f),
+    selectedTint = Color(0xCC393939)
 )