feat：统一阅读界面二级菜单的滑动动画效果

app/src/main/java/io/legado/app/ui/book/read/ReadBookMenuBar.kt

@@ -669,6 +669,7 @@ private fun ReadBookMenuSurface(
                             title = stringResource(R.string.read_config_text_effects),
                             maxHeight = maxHeight,
                             bottomPadding = if (extendSurfaceToNavigationBar) navBarHeight else 0.dp,
+                            animateSize = false,
                             onBack = { onIntent(ReadBookIntent.ReadMenuBack) },
                         ) {
                             ReadStyleTextTitleContent(
@@ -684,7 +685,6 @@ private fun ReadBookMenuSurface(
                                 onOpenFontSelect = {
                                     onIntent(ReadBookIntent.ShowSheet(ReadBookSheet.FontSelect))
                                 },
-                                modifier = Modifier.padding(horizontal = 16.dp),
                                 onIntent = onIntent,
                             )
                         }

app/src/main/java/io/legado/app/ui/book/read/sheet/TextTitleSheet.kt

@@ -1,5 +1,8 @@
 package io.legado.app.ui.book.read.sheet
 
+import androidx.compose.animation.core.FastOutSlowInEasing
+import androidx.compose.animation.core.tween
+import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Spacer
 import androidx.compose.foundation.layout.fillMaxWidth
@@ -25,12 +28,16 @@ import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableFloatStateOf
 import androidx.compose.runtime.mutableIntStateOf
+import androidx.compose.runtime.mutableStateMapOf
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
 import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.setValue
 import androidx.compose.runtime.snapshotFlow
+import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clipToBounds
+import androidx.compose.ui.layout.onSizeChanged
 import androidx.compose.ui.res.stringArrayResource
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.style.TextAlign
@@ -73,19 +80,25 @@ fun ReadStyleTextTitleContent(
     var selectedTab by remember { mutableIntStateOf(0) }
 
     LaunchedEffect(pagerState) {
-        snapshotFlow { pagerState.settledPage }.collect { selectedTab = it }
+        snapshotFlow { pagerState.currentPage }.collect { selectedTab = it }
     }
 
     ReadStyleTextTitleContent(
         tabTitles = tabTitles,
         selectedTab = selectedTab,
-        onSelectedTabChange = { selectedTab = it },
         pagerState = pagerState,
         onOpenShadowSet = onOpenShadowSet,
         onOpenUnderlineConfig = onOpenUnderlineConfig,
         onOpenHighlightRule = onOpenHighlightRule,
         onOpenFontSelect = onOpenFontSelect,
-        animateToPage = { page -> scope.launch { pagerState.animateScrollToPage(page) } },
+        animateToPage = { page ->
+            scope.launch {
+                pagerState.animateScrollToPage(
+                    page = page,
+                    animationSpec = tween(durationMillis = 300, easing = FastOutSlowInEasing)
+                )
+            }
+        },
         modifier = modifier,
         onIntent = onIntent,
     )
@@ -95,7 +108,6 @@ fun ReadStyleTextTitleContent(
 internal fun ReadStyleTextTitleContent(
     tabTitles: List<String>,
     selectedTab: Int,
-    onSelectedTabChange: (Int) -> Unit,
     pagerState: PagerState,
     onOpenShadowSet: () -> Unit,
     onOpenUnderlineConfig: () -> Unit,
@@ -105,6 +117,9 @@ internal fun ReadStyleTextTitleContent(
     modifier: Modifier = Modifier,
     onIntent: (ReadBookIntent) -> Unit,
 ) {
+    val pageHeights = remember { mutableStateMapOf<Int, Int>() }
+    val animatedHeight by rememberPagerAnimatedHeight(pagerState, pageHeights)
+
     Column(
         modifier = modifier
             .fillMaxWidth()
@@ -113,26 +128,37 @@ internal fun ReadStyleTextTitleContent(
             tabTitles = tabTitles,
             selectedTabIndex = selectedTab,
             onTabSelected = { index ->
-                onSelectedTabChange(index)
                 animateToPage(index)
             },
-            modifier = Modifier.padding(bottom = 8.dp),
+            modifier = Modifier.padding(start = 16.dp, end = 16.dp, bottom = 8.dp),
         )
         HorizontalPager(
             state = pagerState,
-            modifier = Modifier.fillMaxWidth(),
+            verticalAlignment = Alignment.Top,
+            modifier = Modifier
+                .fillMaxWidth()
+                .clipToBounds()
+                .pagerHeight(animatedHeight),
         ) { page ->
-            when (page) {
-                0 -> TextEffectsPage(
-                    onOpenShadowSet = onOpenShadowSet,
-                    onOpenUnderlineConfig = onOpenUnderlineConfig,
-                    onOpenHighlightRule = onOpenHighlightRule,
-                    onOpenFontSelect = onOpenFontSelect,
-                    onIntent = onIntent,
-                )
+            Box(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .onSizeChanged { size ->
+                        pageHeights[page] = size.height
+                    }
+            ) {
+                when (page) {
+                    0 -> TextEffectsPage(
+                        onOpenShadowSet = onOpenShadowSet,
+                        onOpenUnderlineConfig = onOpenUnderlineConfig,
+                        onOpenHighlightRule = onOpenHighlightRule,
+                        onOpenFontSelect = onOpenFontSelect,
+                        onIntent = onIntent,
+                    )
 
-                1 -> LayoutSpacingPage(onIntent = onIntent)
-                2 -> TitleSettingsPage(onIntent = onIntent)
+                    1 -> LayoutSpacingPage(onIntent = onIntent)
+                    2 -> TitleSettingsPage(onIntent = onIntent)
+                }
             }
         }
     }
@@ -152,6 +178,7 @@ internal fun LayoutSpacingPage(
     Column(
         modifier = Modifier
             .fillMaxWidth()
+            .padding(horizontal = 16.dp)
             .verticalScroll(rememberScrollState()),
     ) {
         Text(
@@ -223,6 +250,7 @@ internal fun TextEffectsPage(
     Column(
         modifier = Modifier
             .fillMaxWidth()
+            .padding(horizontal = 16.dp)
             .verticalScroll(rememberScrollState()),
     ) {
         Text(
@@ -382,6 +410,7 @@ internal fun TitleSettingsPage(
     Column(
         modifier = Modifier
             .fillMaxWidth()
+            .padding(horizontal = 16.dp)
             .verticalScroll(rememberScrollState()),
     ) {
         TinyDropdownSettingItem(