Use Google Sans

app/shared/src/commonMain/kotlin/ru/fromchat/ui/GoogleSansTypography.kt

@@ -0,0 +1,56 @@
+package ru.fromchat.ui
+
+import androidx.compose.material3.Typography
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontStyle
+import androidx.compose.ui.text.font.FontWeight
+import org.jetbrains.compose.resources.Font
+import ru.fromchat.Res
+import ru.fromchat.google_sans_bold
+import ru.fromchat.google_sans_bold_italic
+import ru.fromchat.google_sans_italic
+import ru.fromchat.google_sans_medium
+import ru.fromchat.google_sans_medium_italic
+import ru.fromchat.google_sans_regular
+import ru.fromchat.google_sans_semibold
+import ru.fromchat.google_sans_semibold_italic
+
+/**
+ * Google Sans (static TTFs from Downloads bundle) for app-wide [MaterialTheme.typography].
+ * The chats header brand title keeps its own Montserrat stack in [ru.fromchat.ui.branding.FromChatBrandTitle].
+ */
+@Composable
+fun googleSansFontFamily(): FontFamily = FontFamily(
+    Font(Res.font.google_sans_regular, FontWeight.Normal, FontStyle.Normal),
+    Font(Res.font.google_sans_italic, FontWeight.Normal, FontStyle.Italic),
+    Font(Res.font.google_sans_medium, FontWeight.Medium, FontStyle.Normal),
+    Font(Res.font.google_sans_medium_italic, FontWeight.Medium, FontStyle.Italic),
+    Font(Res.font.google_sans_semibold, FontWeight.SemiBold, FontStyle.Normal),
+    Font(Res.font.google_sans_semibold_italic, FontWeight.SemiBold, FontStyle.Italic),
+    Font(Res.font.google_sans_bold, FontWeight.Bold, FontStyle.Normal),
+    Font(Res.font.google_sans_bold_italic, FontWeight.Bold, FontStyle.Italic),
+)
+
+@Composable
+fun googleSansMaterialTypography(): Typography {
+    val family = googleSansFontFamily()
+    val base = Typography()
+    return base.copy(
+        displayLarge = base.displayLarge.copy(fontFamily = family),
+        displayMedium = base.displayMedium.copy(fontFamily = family),
+        displaySmall = base.displaySmall.copy(fontFamily = family),
+        headlineLarge = base.headlineLarge.copy(fontFamily = family),
+        headlineMedium = base.headlineMedium.copy(fontFamily = family),
+        headlineSmall = base.headlineSmall.copy(fontFamily = family),
+        titleLarge = base.titleLarge.copy(fontFamily = family),
+        titleMedium = base.titleMedium.copy(fontFamily = family),
+        titleSmall = base.titleSmall.copy(fontFamily = family),
+        bodyLarge = base.bodyLarge.copy(fontFamily = family),
+        bodyMedium = base.bodyMedium.copy(fontFamily = family),
+        bodySmall = base.bodySmall.copy(fontFamily = family),
+        labelLarge = base.labelLarge.copy(fontFamily = family),
+        labelMedium = base.labelMedium.copy(fontFamily = family),
+        labelSmall = base.labelSmall.copy(fontFamily = family),
+    )
+}

app/shared/src/commonMain/kotlin/ru/fromchat/ui/Theme.kt

@@ -4,6 +4,7 @@ import androidx.compose.animation.animateColorAsState
 import androidx.compose.foundation.isSystemInDarkTheme
 import androidx.compose.material3.ColorScheme
 import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Typography
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
@@ -113,8 +114,11 @@ fun FromChatTheme(
         surfaceContainerHighest = surfaceContainerHighest
     )
 
+    val typography: Typography = googleSansMaterialTypography()
+
     MaterialTheme(
         colorScheme = colorScheme,
+        typography = typography,
         content = content
     )
 }