refactor(color-scheme): Remove manual contrast level handling (#1370)

- Remove manual `contrastLevel`
- Simplify color scheme generation

app/src/main/java/eu/kanade/presentation/theme/TachiyomiTheme.kt

@@ -1,8 +1,6 @@
 package eu.kanade.presentation.theme
 
-import android.app.UiModeManager
 import android.content.Context
-import android.os.Build
 import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.material3.ColorScheme
 import androidx.compose.material3.MaterialTheme
@@ -11,8 +9,6 @@ import androidx.compose.runtime.Composable
 import androidx.compose.runtime.remember
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.platform.LocalContext
-import androidx.core.content.getSystemService
-import com.materialkolor.Contrast
 import com.materialkolor.DynamicMaterialTheme
 import eu.kanade.domain.ui.UiPreferences
 import eu.kanade.domain.ui.model.AppTheme
@@ -55,6 +51,8 @@ fun TachiyomiTheme(
     )
 }
 
+// KMK -->
+/** Theme based on Cover */
 @Composable
 fun TachiyomiTheme(
     seedColor: Color?,
@@ -63,10 +61,11 @@ fun TachiyomiTheme(
     typography: Typography = MaterialTheme.typography,
     content: @Composable () -> Unit,
 ) {
-    val uiPreferences = Injekt.get<UiPreferences>()
-    val context = LocalContext.current
-    val isAmoled = amoled ?: uiPreferences.themeDarkAmoled().get()
-    if (seedColor != null) {
+    if (seedColor == null) {
+        TachiyomiTheme(appTheme, amoled, content)
+    } else {
+        val uiPreferences = Injekt.get<UiPreferences>()
+        val isAmoled = amoled ?: uiPreferences.themeDarkAmoled().get()
         DynamicMaterialTheme(
             seedColor = seedColor,
             isAmoled = isAmoled,
@@ -74,20 +73,10 @@ fun TachiyomiTheme(
             typography = typography,
             animate = true,
             content = content,
-            contrastLevel = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
-                context.getSystemService<UiModeManager>()?.contrast?.toDouble() ?: Contrast.Default.value
-            } else {
-                Contrast.Default.value
-            },
-        )
-    } else {
-        BaseTachiyomiTheme(
-            appTheme = appTheme ?: uiPreferences.appTheme().get(),
-            isAmoled = isAmoled,
-            content = content,
         )
     }
 }
+// KMK <--
 
 @Composable
 fun TachiyomiPreviewTheme(
@@ -131,8 +120,7 @@ private fun getThemeColorScheme(
         AppTheme.CUSTOM -> {
             val uiPreferences = Injekt.get<UiPreferences>()
             CustomColorScheme(
-                context = context,
-                seed = uiPreferences.colorTheme().get(),
+                seed = Color(uiPreferences.colorTheme().get()),
                 style = uiPreferences.customThemeStyle().get(),
             )
         }

app/src/main/java/eu/kanade/presentation/theme/colorscheme/CustomColorScheme.kt

@@ -1,7 +1,5 @@
 package eu.kanade.presentation.theme.colorscheme
 
-import android.app.UiModeManager
-import android.content.Context
 import android.content.res.ColorStateList
 import android.os.Build
 import android.widget.EditText
@@ -11,55 +9,29 @@ import androidx.compose.material3.surfaceColorAtElevation
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.toArgb
 import androidx.compose.ui.unit.dp
-import androidx.core.content.getSystemService
 import com.google.android.material.progressindicator.LinearProgressIndicator
 import com.google.android.material.textfield.TextInputEditText
 import com.google.android.material.textfield.TextInputLayout
-import com.materialkolor.Contrast
 import com.materialkolor.PaletteStyle
 import com.materialkolor.dynamicColorScheme
 
 internal class CustomColorScheme(
-    context: Context,
-    seed: Int,
+    seed: Color,
     style: PaletteStyle,
 ) : BaseColorScheme() {
-    private val custom = CustomCompatColorScheme(context, seed, style)
+    override val lightScheme = generateColorSchemeFromSeed(seed = seed, style = style, dark = false)
+    override val darkScheme = generateColorSchemeFromSeed(seed = seed, style = style, dark = true)
 
-    override val darkScheme
-        get() = custom.darkScheme
-
-    override val lightScheme
-        get() = custom.lightScheme
-}
-
-private class CustomCompatColorScheme(
-    context: Context,
-    seed: Int,
-    style: PaletteStyle,
-) : BaseColorScheme() {
-    override val lightScheme = dynamicColorScheme(
-        seedColor = Color(seed),
-        isDark = false,
-        isAmoled = false,
-        style = style,
-        contrastLevel = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
-            context.getSystemService<UiModeManager>()?.contrast?.toDouble() ?: Contrast.Default.value
-        } else {
-            Contrast.Default.value
-        },
-    )
-    override val darkScheme = dynamicColorScheme(
-        seedColor = Color(seed),
-        isDark = true,
-        isAmoled = false,
-        style = style,
-        contrastLevel = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
-            context.getSystemService<UiModeManager>()?.contrast?.toDouble() ?: Contrast.Default.value
-        } else {
-            Contrast.Default.value
-        },
-    )
+    companion object {
+        fun generateColorSchemeFromSeed(seed: Color, style: PaletteStyle, dark: Boolean): ColorScheme {
+            return dynamicColorScheme(
+                seedColor = seed,
+                isDark = dark,
+                isAmoled = false,
+                style = style,
+            )
+        }
+    }
 }
 
 class AndroidViewColorScheme(

app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderActivity.kt

@@ -2,7 +2,6 @@ package eu.kanade.tachiyomi.ui.reader
 
 import android.Manifest
 import android.annotation.SuppressLint
-import android.app.UiModeManager
 import android.app.assist.AssistContent
 import android.content.ClipData
 import android.content.ClipboardManager
@@ -59,7 +58,6 @@ import com.davemorrissey.labs.subscaleview.SubsamplingScaleImageView
 import com.google.android.material.elevation.SurfaceColors
 import com.google.android.material.transition.platform.MaterialContainerTransform
 import com.hippo.unifile.UniFile
-import com.materialkolor.Contrast
 import com.materialkolor.dynamicColorScheme
 import dev.chrisbanes.insetter.applyInsetter
 import eu.kanade.core.util.ifSourcesLoaded
@@ -769,11 +767,6 @@ class ReaderActivity : BaseActivity() {
                 isDark = isNightMode(),
                 isAmoled = themeDarkAmoled,
                 style = themeCoverBasedStyle,
-                contrastLevel = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
-                    getSystemService<UiModeManager>()?.contrast?.toDouble() ?: Contrast.Default.value
-                } else {
-                    Contrast.Default.value
-                },
             )
         }
         // KMK <--