improvements for previewing validation & captcha screens

core/ui/src/main/kotlin/com/meloda/app/fast/ui/basic/ContentAlpha.kt

@@ -22,7 +22,7 @@ import androidx.compose.material3.MaterialTheme
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.compositionLocalOf
 import androidx.compose.ui.graphics.luminance
-import com.meloda.app.fast.ui.util.isUsingDarkTheme
+import com.meloda.app.fast.ui.theme.LocalIsDarkTheme
 
 /**
  * Default alpha levels used by Material components.
@@ -79,7 +79,7 @@ object ContentAlpha {
         lowContrastAlpha: Float
     ): Float {
         val contentColor = LocalContentColor.current
-        return if (!isUsingDarkTheme()) {
+        return if (!LocalIsDarkTheme.current) {
             if (contentColor.luminance() > 0.5) highContrastAlpha else lowContrastAlpha
         } else {
             if (contentColor.luminance() < 0.5) highContrastAlpha else lowContrastAlpha

core/ui/src/main/kotlin/com/meloda/app/fast/ui/theme/AppTheme.kt

@@ -9,6 +9,7 @@ import androidx.compose.material3.dynamicDarkColorScheme
 import androidx.compose.material3.dynamicLightColorScheme
 import androidx.compose.material3.lightColorScheme
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.CompositionLocalProvider
 import androidx.compose.runtime.SideEffect
 import androidx.compose.runtime.compositionLocalOf
 import androidx.compose.ui.graphics.Color
@@ -115,6 +116,8 @@ val LocalTheme = compositionLocalOf {
     )
 }
 
+val LocalIsDarkTheme = compositionLocalOf { false }
+
 val LocalHazeState = compositionLocalOf {
     HazeState()
 }
@@ -178,9 +181,11 @@ fun AppTheme(
         }
     }
 
-    MaterialTheme(
-        colorScheme = predefinedColorScheme ?: colorScheme,
-        typography = typography,
-        content = content
-    )
+    CompositionLocalProvider(LocalIsDarkTheme provides useDarkTheme) {
+        MaterialTheme(
+            colorScheme = predefinedColorScheme ?: colorScheme,
+            typography = typography,
+            content = content
+        )
+    }
 }

core/ui/src/main/kotlin/com/meloda/app/fast/ui/util/Extensions.kt

@@ -1,6 +1,5 @@
 package com.meloda.app.fast.ui.util
 
-import android.content.res.Configuration
 import android.view.KeyEvent
 import androidx.compose.foundation.lazy.LazyListState
 import androidx.compose.runtime.Composable
@@ -11,34 +10,9 @@ import androidx.compose.runtime.remember
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.input.key.onKeyEvent
-import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.res.pluralStringResource
 import androidx.compose.ui.res.stringResource
 import com.meloda.app.fast.common.UiText
-import com.meloda.app.fast.common.util.AndroidUtils
-
-@Composable
-fun isUsingDarkTheme(): Boolean {
-//    val nightThemeMode = AppCompatDelegate.MODE_NIGHT_YES
-
-//        SettingsController.getInt(
-//        SettingsKeys.KEY_APPEARANCE_DARK_THEME,
-//        SettingsKeys.DEFAULT_VALUE_APPEARANCE_DARK_THEME
-//    )
-//    val appForceDarkMode = nightThemeMode == AppCompatDelegate.MODE_NIGHT_YES
-//    val appBatterySaver = nightThemeMode == AppCompatDelegate.MODE_NIGHT_AUTO_BATTERY
-
-    val context = LocalContext.current
-
-    val systemUiNightMode = context.resources.configuration.uiMode
-
-    val isSystemBatterySaver = AndroidUtils.isBatterySaverOn(context)
-    val isSystemUsingDarkTheme =
-        systemUiNightMode and Configuration.UI_MODE_NIGHT_MASK == Configuration.UI_MODE_NIGHT_YES
-
-    return true
-//    return appForceDarkMode || (appBatterySaver && isSystemBatterySaver) || (!appBatterySaver && isSystemUsingDarkTheme && nightThemeMode == AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM)
-}
 
 @Composable
 fun UiText?.getString(): String? {