Open reading settings in the left-hand panel on large screens

On a tablet or an unfolded foldable the gear now opens reading settings
as a panel on the left, where the dictionary opens, instead of a bottom
sheet. The page stays in view beside it, so a change of theme, font,
weight or size shows on the poem as it is made. The sheet and the panel
share one ReadingSettingsContent; phones keep the sheet.

Adds wireframe 8 and notes in the design docs.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RhmDdrN5hgWrgRcFLAMsV6

app/src/main/java/com/ganjoor/android/ui/GanjoorApp.kt

@@ -1,9 +1,16 @@
 package com.ganjoor.android.ui
 
 import androidx.compose.animation.AnimatedContentTransitionScope.SlideDirection
+import androidx.compose.animation.AnimatedVisibility
+import androidx.compose.animation.expandHorizontally
+import androidx.compose.animation.fadeIn
+import androidx.compose.animation.fadeOut
+import androidx.compose.animation.shrinkHorizontally
 import androidx.compose.animation.EnterTransition
 import androidx.compose.animation.ExitTransition
+import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.BoxWithConstraints
+import androidx.compose.foundation.layout.Row
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.CompositionLocalProvider
@@ -102,6 +109,10 @@ fun GanjoorApp() {
         val wide by rememberUpdatedState(maxWidth >= 600.dp)
         // Up to three list columns beside the poets; below this, only the newest one.
         val expanded by rememberUpdatedState(maxWidth >= 840.dp)
+        // On a large screen reading settings open in a panel on the left, where the dictionary
+        // opens, so the page stays in view and shows each change as it is made.
+        Row(Modifier.fillMaxSize()) {
+        Box(Modifier.weight(1f)) {
         NavHost(
             navController = nav,
             startDestination = PoetsRoute,
@@ -226,8 +237,19 @@ fun GanjoorApp() {
             }
         }
         }
+        if (wide) {
+            AnimatedVisibility(
+                visible = settingsOpen,
+                enter = expandHorizontally() + fadeIn(),
+                exit = shrinkHorizontally() + fadeOut(),
+            ) {
+                ReadingSettingsPanel(onDismiss = { settingsOpen = false })
+            }
+        }
+        }
 
         // Inside the provider: the sheet reads LocalOpenAbout, so it has to be in scope.
-        if (settingsOpen) ReadingSettingsSheet(onDismiss = { settingsOpen = false })
+        if (settingsOpen && !wide) ReadingSettingsSheet(onDismiss = { settingsOpen = false })
+        }
     }
 }

app/src/main/java/com/ganjoor/android/ui/ReadingSettings.kt

@@ -1,24 +1,32 @@
 package com.ganjoor.android.ui
 
 import android.app.Activity
+import androidx.activity.compose.BackHandler
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.FlowRow
 import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.fillMaxHeight
+import androidx.compose.foundation.layout.heightIn
+import androidx.compose.foundation.layout.statusBarsPadding
+import androidx.compose.foundation.layout.width
 import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.navigationBarsPadding
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.rememberScrollState
 import androidx.compose.foundation.verticalScroll
 import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.Close
 import androidx.compose.material.icons.filled.Settings
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.material3.FilterChip
+import androidx.compose.material3.HorizontalDivider
 import androidx.compose.material3.Icon
 import androidx.compose.material3.IconButton
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.ModalBottomSheet
 import androidx.compose.material3.Slider
+import androidx.compose.material3.Surface
 import androidx.compose.material3.Switch
 import androidx.compose.material3.TextButton
 import androidx.compose.material3.Text
@@ -58,11 +66,53 @@ fun ReadingSettingsAction() {
 @OptIn(ExperimentalMaterial3Api::class)
 @Composable
 fun ReadingSettingsSheet(onDismiss: () -> Unit) {
+    ModalBottomSheet(onDismissRequest = onDismiss) {
+        ReadingSettingsContent()
+    }
+}
+
+/**
+ * The same settings as [ReadingSettingsSheet], as a panel on the left of a large screen — the
+ * place the dictionary opens too. The page stays in view beside it, so a change of theme, font
+ * or size shows on the poem itself as it is made. The cross, or Back, closes it.
+ */
+@Composable
+fun ReadingSettingsPanel(onDismiss: () -> Unit) {
+    BackHandler(onBack = onDismiss)
+    Surface(
+        color = MaterialTheme.colorScheme.surfaceContainerLow,
+        modifier = Modifier.width(360.dp).fillMaxHeight(),
+    ) {
+        Column(Modifier.statusBarsPadding()) {
+            Row(
+                modifier = Modifier
+                    .fillMaxWidth()
+                    .heightIn(min = 56.dp)
+                    .padding(start = 20.dp, end = 4.dp),
+                verticalAlignment = Alignment.CenterVertically,
+            ) {
+                Text(
+                    text = stringResource(R.string.reading_settings),
+                    style = MaterialTheme.typography.titleMedium,
+                    color = MaterialTheme.colorScheme.primary,
+                    modifier = Modifier.weight(1f),
+                )
+                IconButton(onClick = onDismiss) {
+                    Icon(Icons.Default.Close, stringResource(R.string.close))
+                }
+            }
+            HorizontalDivider(modifier = Modifier.padding(bottom = 8.dp))
+            ReadingSettingsContent()
+        }
+    }
+}
+
+@Composable
+private fun ReadingSettingsContent() {
     val settings = LocalSettings.current
     val prefs = settings.value
     val context = LocalContext.current
 
-    ModalBottomSheet(onDismissRequest = onDismiss) {
         Column(
             modifier = Modifier
                 // Inset first, then scroll: the viewport has to stop above the nav bar,
@@ -148,7 +198,6 @@ fun ReadingSettingsSheet(onDismiss: () -> Unit) {
                 Text(stringResource(R.string.about))
             }
         }
-    }
 }
 
 @Composable