font size setting

mac/Sources/Byre/Settings.swift

@@ -27,6 +27,11 @@ struct SettingsView: View {
                     .foregroundStyle(Palette.muted)
                     .fixedSize(horizontal: false, vertical: true)
                 ServerColorPicker()
+                heading("Font size")
+                Text("The size of body text, on every Mac you use. Other text grows and shrinks with it.")
+                    .foregroundStyle(Palette.muted)
+                    .fixedSize(horizontal: false, vertical: true)
+                FontSizeStepper()
                 heading("Notifications")
                 DeviceNotifications()
                 PrefsBox()
@@ -87,12 +92,33 @@ private struct ServerColorPicker: View {
     }
 }
 
+private struct FontSizeStepper: View {
+    var body: some View {
+        let fonts = FontSize.shared
+        HStack(spacing: 8) {
+            Button("−") {
+                fonts.set(fonts.body - 1)
+            }
+            .buttonStyle(WebButtonStyle())
+            .disabled(fonts.body <= FontSize.range.lowerBound)
+            Text("\(fonts.body) pt")
+                .monospacedDigit()
+            Button("+") {
+                fonts.set(fonts.body + 1)
+            }
+            .buttonStyle(WebButtonStyle())
+            .disabled(fonts.body >= FontSize.range.upperBound)
+        }
+        .padding(.top, 8)
+    }
+}
+
 private struct SyncState: View {
     var body: some View {
         TimelineView(.periodic(from: .now, by: 30)) { _ in
             if let sync = Servers.shared.sync {
                 if sync.ok {
-                    Text("This Mac shares its servers, window colours, drafts and task visits through iCloud. Last synced \(ago(sync.at)).")
+                    Text("This Mac shares its servers, window colours, font size, drafts and task visits through iCloud. Last synced \(ago(sync.at)).")
                         .fixedSize(horizontal: false, vertical: true)
                 } else {
                     Text("iCloud sync is failing on this Mac, so changes made here aren't reaching your other Macs. Failed \(ago(sync.at)): \(sync.error ?? "")")