[app] some compose fixes

fix previews that required inaccessible classes and make a view expand/scrollable

app/src/main/java/org/fdroid/fdroid/compose/ComposeUtils.kt

@@ -16,6 +16,7 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.graphics.vector.ImageVector
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalInspectionMode
 import androidx.compose.ui.platform.LocalLayoutDirection
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.em
@@ -33,8 +34,9 @@ object ComposeUtils {
             layoutDirection = layoutDirection,
         )
         val newColors = (colors ?: MaterialTheme.colors).let { c ->
-            if (!c.isLight && Preferences.get().isPureBlack) c.copy(background = Color.Black)
-            else c
+            if (!LocalInspectionMode.current && !c.isLight && Preferences.get().isPureBlack) {
+                c.copy(background = Color.Black)
+            } else c
         }
         MaterialTheme(
             colors = newColors,

app/src/main/java/org/fdroid/fdroid/views/repos/AddRepoErrorScreen.kt

@@ -19,6 +19,7 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.alpha
 import androidx.compose.ui.graphics.ColorFilter
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.platform.LocalInspectionMode
 import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.tooling.preview.Preview
@@ -52,8 +53,11 @@ fun AddRepoErrorScreen(paddingValues: PaddingValues, state: AddRepoError) {
         val title = when (state.errorType) {
             INVALID_FINGERPRINT -> stringResource(R.string.bad_fingerprint)
             UNKNOWN_SOURCES_DISALLOWED -> {
-                val context = LocalContext.current
-                getDisallowInstallUnknownSourcesErrorMessage(context)
+                if (LocalInspectionMode.current) {
+                    stringResource(R.string.has_disallow_install_unknown_sources)
+                } else {
+                    getDisallowInstallUnknownSourcesErrorMessage(LocalContext.current)
+                }
             }
 
             INVALID_INDEX -> stringResource(R.string.repo_invalid)

app/src/main/java/org/fdroid/fdroid/views/repos/AddRepoIntroScreen.kt

@@ -14,6 +14,8 @@ import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.heightIn
 import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.rememberScrollState
+import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.ButtonDefaults
 import androidx.compose.material.ContentAlpha
 import androidx.compose.material.Icon
@@ -114,6 +116,7 @@ fun AddRepoIntroContent(paddingValues: PaddingValues, onFetchRepo: (String) -> U
         horizontalAlignment = CenterHorizontally,
         modifier = Modifier
             .fillMaxSize()
+            .verticalScroll(rememberScrollState())
             .padding(16.dp)
             .padding(paddingValues),
     ) {

app/src/main/java/org/fdroid/fdroid/views/repos/RepoPreviewScreen.kt

@@ -1,5 +1,6 @@
 package org.fdroid.fdroid.views.repos
 
+import android.content.res.Configuration
 import androidx.compose.foundation.ExperimentalFoundationApi
 import androidx.compose.foundation.Image
 import androidx.compose.foundation.layout.Arrangement.spacedBy
@@ -95,7 +96,10 @@ fun RepoPreviewHeader(
     localeList: LocaleListCompat,
     isPreview: Boolean,
 ) {
-    Column(verticalArrangement = spacedBy(8.dp)) {
+    Column(
+        verticalArrangement = spacedBy(8.dp),
+        modifier = Modifier.fillMaxWidth(),
+    ) {
         val repo = state.repo ?: error("repo was null")
         val res = LocalContext.current.resources
         Row(
@@ -240,8 +244,8 @@ fun RepoPreviewScreenFetchingPreview() {
     }
 }
 
-@Preview
 @Composable
+@Preview(uiMode = Configuration.UI_MODE_NIGHT_YES, widthDp = 720, heightDp = 360)
 fun RepoPreviewScreenNewMirrorPreview() {
     val repo = FDroidApp.createSwapRepo("https://example.org", "foo bar")
     FDroidContent {