🚀 Add scrollbar

Added scrollbar to non-primary screens. Not doable for all screens due to problems.

Partly Resolves: #45

app/build.gradle.kts

@@ -36,7 +36,7 @@ android {
         getByName("debug") {
             applicationIdSuffix = ".debug"
         }
-        
+
         getByName("release") {
             isMinifyEnabled = true
             isShrinkResources = false
@@ -163,4 +163,7 @@ dependencies {
 
     // Drag & Drop
     implementation("sh.calvin.reorderable:reorderable:2.3.0")
+
+    // Scrollbar
+    implementation("com.github.nanihadesuka:LazyColumnScrollbar:2.2.0")
 }

app/src/main/java/ua/acclorite/book_story/domain/util/Constants.kt

@@ -1,12 +1,20 @@
+@file:Suppress("unused")
+
 package ua.acclorite.book_story.domain.util
 
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.Person
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.runtime.Composable
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.RectangleShape
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.font.Font
 import androidx.compose.ui.text.font.FontFamily
 import androidx.compose.ui.text.font.FontStyle
+import androidx.compose.ui.unit.dp
+import my.nanihadesuka.compose.ScrollbarSelectionMode
+import my.nanihadesuka.compose.ScrollbarSettings
 import ua.acclorite.book_story.R
 import ua.acclorite.book_story.domain.model.Badge
 import ua.acclorite.book_story.domain.model.Book
@@ -55,6 +63,10 @@ object Constants {
 
     // Default Color Preset (Used when creating new color presets)
     val DEFAULT_COLOR_PRESET = provideDefaultColorPreset()
+
+    // Scrollbars (Primary unused, awaiting for fixes)
+    val PRIMARY_SCROLLBAR @Composable get() = providePrimaryScrollbar()
+    val SECONDARY_SCROLLBAR @Composable get() = provideSecondaryScrollbar()
 }
 
 private fun provideSupportedExtensions() = listOf(
@@ -544,4 +556,27 @@ private fun provideDefaultColorPreset() = ColorPreset(
     backgroundColor = Color(0xFFFAF8FF), // Blue Light Surface (hardcoded)
     fontColor = Color(0xFF44464F), // Blue Light OnSurfaceVariant (hardcoded)
     isSelected = false
+)
+
+@Composable
+private fun providePrimaryScrollbar() = ScrollbarSettings(
+    thumbUnselectedColor = MaterialTheme.colorScheme.primary,
+    hideDelayMillis = 2000,
+    durationAnimationMillis = 300,
+    selectionMode = ScrollbarSelectionMode.Disabled,
+    thumbThickness = 8.dp,
+    scrollbarPadding = 4.dp
+)
+
+@Composable
+private fun provideSecondaryScrollbar() = ScrollbarSettings(
+    thumbUnselectedColor = MaterialTheme.colorScheme.onSurfaceVariant.copy(0.5f),
+    hideDelayMillis = 500,
+    durationAnimationMillis = 200,
+    thumbMinLength = 0.4f,
+    selectionMode = ScrollbarSelectionMode.Disabled,
+    thumbThickness = 4.dp,
+    thumbShape = RectangleShape,
+    hideDisplacement = 0.dp,
+    scrollbarPadding = 0.dp
 )

app/src/main/java/ua/acclorite/book_story/presentation/components/CustomLazyColumn.kt

@@ -0,0 +1,62 @@
+package ua.acclorite.book_story.presentation.components
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.PaddingValues
+import androidx.compose.foundation.lazy.LazyColumn
+import androidx.compose.foundation.lazy.LazyListScope
+import androidx.compose.foundation.lazy.LazyListState
+import androidx.compose.foundation.lazy.rememberLazyListState
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.derivedStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import my.nanihadesuka.compose.InternalLazyColumnScrollbar
+import my.nanihadesuka.compose.ScrollbarSettings
+import ua.acclorite.book_story.domain.util.Constants
+
+/**
+ * Custom Lazy Column.
+ * Has scrollbar.
+ *
+ * @param modifier Modifier.
+ * @param state [LazyListState].
+ * @param scrollbarSettings [ScrollbarSettings]. [Constants.SECONDARY_SCROLLBAR] by default.
+ * @param enableScrollbar Whether scrollbar is enabled.
+ * @param contentPadding [PaddingValues].
+ * @param verticalArrangement Vertical item arrangement.
+ * @param content Content of the column.
+ */
+@Composable
+fun CustomLazyColumn(
+    modifier: Modifier = Modifier,
+    state: LazyListState = rememberLazyListState(),
+    scrollbarSettings: ScrollbarSettings = Constants.SECONDARY_SCROLLBAR,
+    enableScrollbar: Boolean = true,
+    contentPadding: PaddingValues = PaddingValues(0.dp),
+    verticalArrangement: Arrangement.Vertical = Arrangement.Top,
+    content: LazyListScope.() -> Unit
+) {
+    val enabled = remember {
+        derivedStateOf {
+            enableScrollbar && (state.canScrollBackward || state.canScrollForward)
+        }
+    }
+
+    Box(modifier = modifier) {
+        LazyColumn(
+            state = state,
+            verticalArrangement = verticalArrangement,
+            contentPadding = contentPadding
+        ) {
+            content()
+        }
+        if (enabled.value) {
+            InternalLazyColumnScrollbar(
+                state = state,
+                settings = scrollbarSettings
+            )
+        }
+    }
+}

app/src/main/java/ua/acclorite/book_story/presentation/screens/about/AboutScreen.kt

@@ -11,7 +11,6 @@ import androidx.compose.foundation.layout.navigationBars
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
 import androidx.compose.foundation.layout.windowInsetsPadding
-import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.HorizontalDivider
 import androidx.compose.material3.Icon
@@ -34,6 +33,7 @@ import androidx.compose.ui.unit.dp
 import androidx.hilt.navigation.compose.hiltViewModel
 import ua.acclorite.book_story.R
 import ua.acclorite.book_story.domain.util.OnNavigate
+import ua.acclorite.book_story.presentation.components.CustomLazyColumn
 import ua.acclorite.book_story.presentation.components.GoBackButton
 import ua.acclorite.book_story.presentation.components.collapsibleUntilExitScrollBehaviorWithLazyListState
 import ua.acclorite.book_story.presentation.data.LocalNavigator
@@ -98,7 +98,7 @@ private fun AboutScreen(
             )
         }
     ) { paddingValues ->
-        LazyColumn(
+        CustomLazyColumn(
             Modifier
                 .fillMaxSize()
                 .padding(top = paddingValues.calculateTopPadding()),

app/src/main/java/ua/acclorite/book_story/presentation/screens/about/nested/credits/CreditsScreen.kt

@@ -6,7 +6,6 @@ import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.navigationBars
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.windowInsetsPadding
-import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.LargeTopAppBar
 import androidx.compose.material3.MaterialTheme
@@ -22,6 +21,7 @@ import androidx.hilt.navigation.compose.hiltViewModel
 import ua.acclorite.book_story.R
 import ua.acclorite.book_story.domain.util.Constants
 import ua.acclorite.book_story.domain.util.OnNavigate
+import ua.acclorite.book_story.presentation.components.CustomLazyColumn
 import ua.acclorite.book_story.presentation.components.GoBackButton
 import ua.acclorite.book_story.presentation.components.collapsibleUntilExitScrollBehaviorWithLazyListState
 import ua.acclorite.book_story.presentation.components.customItems
@@ -72,7 +72,7 @@ private fun CreditsScreen(
             )
         }
     ) { paddingValues ->
-        LazyColumn(
+        CustomLazyColumn(
             Modifier
                 .fillMaxSize()
                 .padding(top = paddingValues.calculateTopPadding()),

app/src/main/java/ua/acclorite/book_story/presentation/screens/about/nested/license_info/LicenseInfoScreen.kt

@@ -13,7 +13,6 @@ import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.navigationBars
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.windowInsetsPadding
-import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.outlined.Language
@@ -39,6 +38,7 @@ import androidx.hilt.navigation.compose.hiltViewModel
 import ua.acclorite.book_story.R
 import ua.acclorite.book_story.domain.util.OnNavigate
 import ua.acclorite.book_story.presentation.components.CustomIconButton
+import ua.acclorite.book_story.presentation.components.CustomLazyColumn
 import ua.acclorite.book_story.presentation.components.GoBackButton
 import ua.acclorite.book_story.presentation.components.collapsibleUntilExitScrollBehaviorWithLazyListState
 import ua.acclorite.book_story.presentation.components.customItems
@@ -148,7 +148,7 @@ private fun LicenseInfoScreen(
         DefaultTransition(
             visible = state.value.license != null
         ) {
-            LazyColumn(
+            CustomLazyColumn(
                 Modifier
                     .fillMaxSize()
                     .padding(top = paddingValues.calculateTopPadding()),

app/src/main/java/ua/acclorite/book_story/presentation/screens/about/nested/licenses/LicensesScreen.kt

@@ -10,7 +10,6 @@ import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.navigationBars
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.windowInsetsPadding
-import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.LargeTopAppBar
 import androidx.compose.material3.MaterialTheme
@@ -30,6 +29,7 @@ import androidx.hilt.navigation.compose.hiltViewModel
 import ua.acclorite.book_story.R
 import ua.acclorite.book_story.domain.util.OnNavigate
 import ua.acclorite.book_story.presentation.components.CustomAnimatedVisibility
+import ua.acclorite.book_story.presentation.components.CustomLazyColumn
 import ua.acclorite.book_story.presentation.components.GoBackButton
 import ua.acclorite.book_story.presentation.components.collapsibleUntilExitScrollBehaviorWithLazyListState
 import ua.acclorite.book_story.presentation.components.customItems
@@ -94,7 +94,7 @@ private fun LicensesScreen(
             enter = fadeIn(tween(300)),
             exit = fadeOut(tween(300))
         ) {
-            LazyColumn(
+            CustomLazyColumn(
                 Modifier
                     .fillMaxSize()
                     .padding(top = paddingValues.calculateTopPadding()),

app/src/main/java/ua/acclorite/book_story/presentation/screens/help/HelpScreen.kt

@@ -12,7 +12,6 @@ import androidx.compose.foundation.layout.navigationBars
 import androidx.compose.foundation.layout.navigationBarsPadding
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.windowInsetsPadding
-import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.filled.RestartAlt
@@ -36,6 +35,7 @@ import ua.acclorite.book_story.R
 import ua.acclorite.book_story.domain.util.Constants
 import ua.acclorite.book_story.domain.util.OnNavigate
 import ua.acclorite.book_story.presentation.components.CustomIconButton
+import ua.acclorite.book_story.presentation.components.CustomLazyColumn
 import ua.acclorite.book_story.presentation.components.GoBackButton
 import ua.acclorite.book_story.presentation.components.collapsibleUntilExitScrollBehaviorWithLazyListState
 import ua.acclorite.book_story.presentation.components.customItems
@@ -155,7 +155,7 @@ private fun HelpScreen(
             }
         }
     ) { paddingValues ->
-        LazyColumn(
+        CustomLazyColumn(
             Modifier
                 .fillMaxSize()
                 .padding(paddingValues)

app/src/main/java/ua/acclorite/book_story/presentation/screens/library/components/LibraryBookItem.kt

@@ -22,6 +22,7 @@ import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.remember
+import androidx.compose.runtime.saveable.rememberSaveable
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
@@ -68,7 +69,7 @@ fun LibraryBookItem(
         else onSurfaceColor
     }
 
-    val progress = remember(book.first) {
+    val progress = rememberSaveable(book.first) {
         "${
             (book.first.progress * 100)
                 .toDouble()

app/src/main/java/ua/acclorite/book_story/presentation/screens/settings/SettingsScreen.kt

@@ -7,7 +7,6 @@ import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.navigationBars
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.windowInsetsPadding
-import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.material.icons.Icons
 import androidx.compose.material.icons.automirrored.filled.MenuBook
 import androidx.compose.material.icons.filled.DisplaySettings
@@ -26,6 +25,7 @@ import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.unit.dp
 import ua.acclorite.book_story.R
 import ua.acclorite.book_story.domain.util.OnNavigate
+import ua.acclorite.book_story.presentation.components.CustomLazyColumn
 import ua.acclorite.book_story.presentation.components.GoBackButton
 import ua.acclorite.book_story.presentation.components.collapsibleUntilExitScrollBehaviorWithLazyListState
 import ua.acclorite.book_story.presentation.data.LocalNavigator
@@ -68,7 +68,7 @@ private fun SettingsScreen(
             )
         }
     ) { paddingValues ->
-        LazyColumn(
+        CustomLazyColumn(
             Modifier
                 .fillMaxSize()
                 .padding(top = paddingValues.calculateTopPadding()),

app/src/main/java/ua/acclorite/book_story/presentation/screens/settings/nested/appearance/AppearanceSettings.kt

@@ -6,7 +6,6 @@ import androidx.compose.foundation.layout.imePadding
 import androidx.compose.foundation.layout.navigationBars
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.windowInsetsPadding
-import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.LargeTopAppBar
 import androidx.compose.material3.MaterialTheme
@@ -22,6 +21,7 @@ import androidx.compose.ui.res.stringResource
 import androidx.hilt.navigation.compose.hiltViewModel
 import ua.acclorite.book_story.R
 import ua.acclorite.book_story.domain.util.OnNavigate
+import ua.acclorite.book_story.presentation.components.CustomLazyColumn
 import ua.acclorite.book_story.presentation.components.GoBackButton
 import ua.acclorite.book_story.presentation.components.collapsibleUntilExitScrollBehaviorWithLazyListState
 import ua.acclorite.book_story.presentation.data.LocalNavigator
@@ -85,8 +85,8 @@ private fun AppearanceSettings(
             )
         }
     ) { paddingValues ->
-        LazyColumn(
-            Modifier
+        CustomLazyColumn(
+            modifier = Modifier
                 .fillMaxSize()
                 .padding(top = paddingValues.calculateTopPadding()),
             state = scrollState.second

app/src/main/java/ua/acclorite/book_story/presentation/screens/settings/nested/browse/BrowseSettings.kt

@@ -6,7 +6,6 @@ import androidx.compose.foundation.layout.imePadding
 import androidx.compose.foundation.layout.navigationBars
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.windowInsetsPadding
-import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.LargeTopAppBar
 import androidx.compose.material3.MaterialTheme
@@ -22,6 +21,7 @@ import androidx.compose.ui.res.stringResource
 import androidx.hilt.navigation.compose.hiltViewModel
 import ua.acclorite.book_story.R
 import ua.acclorite.book_story.domain.util.OnNavigate
+import ua.acclorite.book_story.presentation.components.CustomLazyColumn
 import ua.acclorite.book_story.presentation.components.GoBackButton
 import ua.acclorite.book_story.presentation.components.collapsibleUntilExitScrollBehaviorWithLazyListState
 import ua.acclorite.book_story.presentation.data.LocalNavigator
@@ -76,7 +76,7 @@ private fun BrowseSettings(
             )
         }
     ) { paddingValues ->
-        LazyColumn(
+        CustomLazyColumn(
             Modifier
                 .fillMaxSize()
                 .padding(top = paddingValues.calculateTopPadding()),

app/src/main/java/ua/acclorite/book_story/presentation/screens/settings/nested/general/GeneralSettings.kt

@@ -5,7 +5,6 @@ import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.navigationBars
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.windowInsetsPadding
-import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.LargeTopAppBar
 import androidx.compose.material3.MaterialTheme
@@ -21,6 +20,7 @@ import androidx.compose.ui.res.stringResource
 import androidx.hilt.navigation.compose.hiltViewModel
 import ua.acclorite.book_story.R
 import ua.acclorite.book_story.domain.util.OnNavigate
+import ua.acclorite.book_story.presentation.components.CustomLazyColumn
 import ua.acclorite.book_story.presentation.components.GoBackButton
 import ua.acclorite.book_story.presentation.components.collapsibleUntilExitScrollBehaviorWithLazyListState
 import ua.acclorite.book_story.presentation.data.LocalNavigator
@@ -80,7 +80,7 @@ private fun GeneralSettings(
             )
         }
     ) { paddingValues ->
-        LazyColumn(
+        CustomLazyColumn(
             Modifier
                 .fillMaxSize()
                 .padding(top = paddingValues.calculateTopPadding()),

app/src/main/java/ua/acclorite/book_story/presentation/screens/settings/nested/reader/ReaderSettings.kt

@@ -5,7 +5,6 @@ import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.navigationBars
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.windowInsetsPadding
-import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.LargeTopAppBar
 import androidx.compose.material3.MaterialTheme
@@ -21,6 +20,7 @@ import androidx.compose.ui.res.stringResource
 import androidx.hilt.navigation.compose.hiltViewModel
 import ua.acclorite.book_story.R
 import ua.acclorite.book_story.domain.util.OnNavigate
+import ua.acclorite.book_story.presentation.components.CustomLazyColumn
 import ua.acclorite.book_story.presentation.components.GoBackButton
 import ua.acclorite.book_story.presentation.components.collapsibleUntilExitScrollBehaviorWithLazyListState
 import ua.acclorite.book_story.presentation.data.LocalNavigator
@@ -74,7 +74,7 @@ private fun ReaderSettings(
             )
         }
     ) { paddingValues ->
-        LazyColumn(
+        CustomLazyColumn(
             Modifier
                 .fillMaxSize()
                 .padding(top = paddingValues.calculateTopPadding()),

app/src/main/java/ua/acclorite/book_story/presentation/screens/start/components/StartNavigationScreenItem.kt

@@ -2,7 +2,6 @@ package ua.acclorite.book_story.presentation.screens.start.components
 
 import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.LazyListScope
 import androidx.compose.foundation.lazy.rememberLazyListState
 import androidx.compose.material3.MaterialTheme
@@ -10,6 +9,7 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.State
 import androidx.compose.ui.Modifier
 import ua.acclorite.book_story.presentation.components.CustomAnimatedVisibility
+import ua.acclorite.book_story.presentation.components.CustomLazyColumn
 import ua.acclorite.book_story.presentation.screens.start.data.StartNavigationScreen
 import ua.acclorite.book_story.presentation.screens.start.data.StartState
 import ua.acclorite.book_story.presentation.ui.Transitions
@@ -32,7 +32,7 @@ fun StartNavigationScreenItem(
         exit = if (state.value.useBackAnimation) Transitions.BackSlidingTransitionOut
         else Transitions.SlidingTransitionOut
     ) {
-        LazyColumn(
+        CustomLazyColumn(
             Modifier
                 .fillMaxSize()
                 .background(MaterialTheme.colorScheme.surfaceContainerLow),