Part of #663: User Interface > Show Tool Group Labels

The toolbar names its tool groups (Select, Shapes, Draw, Modify...). A new
preference, on by default, turns the names off for a cleaner toolbar: a faint
dash then separates the groups.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

crates/engine/src/cmd/prefscmds.rs

@@ -275,6 +275,7 @@ pub const PREF_SPECS: &[PrefSpec] = &[
         ])
     ),
     p!("autoCollapseIconPanels", "User Interface", "", "Auto-Collapse Iconic Panels", bool),
+    p!("toolGroupLabels", "User Interface", "", "Show Tool Group Labels", bool),
     p!("openDocumentsAsTabs", "User Interface", "", "Open Documents As Tabs", bool),
     p!("largeTabs", "User Interface", "", "Large Tabs", bool),
     p!("uiScaling", "User Interface", "UI Scaling", "Scale", num(0.75, 2.0, "×")),

crates/engine/src/lib.rs

@@ -491,6 +491,9 @@ pub struct Prefs {
     pub ui_brightness: String,
     pub canvas_color: String,
     pub auto_collapse_icon_panels: bool,
+    /// User Interface › Show Tool Group Labels: the toolbar's group names (Select, Shapes, Draw…);
+    /// off, a faint dash separates the groups instead (#663).
+    pub tool_group_labels: bool,
     pub open_documents_as_tabs: bool,
     pub large_tabs: bool,
     pub ui_scaling: f64,
@@ -706,6 +709,7 @@ impl Default for Prefs {
             ui_brightness: s("mediumDark"),
             canvas_color: s("matchUi"),
             auto_collapse_icon_panels: false,
+            tool_group_labels: true,
             open_documents_as_tabs: true,
             large_tabs: false,
             ui_scaling: 1.0,

crates/ui-egui/src/i18n/es.tsv

@@ -203,6 +203,7 @@
 	Auto Size New Area Type	Ajustar automáticamente el tamaño del nuevo texto de área
 	Auto Spell Check	Revisión ortográfica automática
 	Auto-Collapse Iconic Panels	Contraer automáticamente los paneles de iconos
+	Show Tool Group Labels	Mostrar etiquetas de grupos de herramientas
 	Auto-Rotate (turn the paper to each artboard)	Rotar automáticamente (girar el papel según cada mesa de trabajo)
 	Automatic flatness	Lisura automática
 	Automatically	Automáticamente

crates/ui-egui/src/i18n/fr.tsv

@@ -204,6 +204,7 @@
 	Auto Size New Area Type	Taille automatique du nouveau texte captif
 	Auto Spell Check	Vérification orthographique automatique
 	Auto-Collapse Iconic Panels	Réduire automatiquement les panneaux en icônes
+	Show Tool Group Labels	Afficher les libellés des groupes d'outils
 	Auto-Rotate (turn the paper to each artboard)	Rotation automatique (orienter le papier selon chaque plan de travail)
 	Automatic flatness	Planéité automatique
 	Automatically	Automatiquement

crates/ui-egui/src/i18n/it.tsv

@@ -203,6 +203,7 @@
 	Auto Size New Area Type	Dimensionamento automatico del nuovo testo in area
 	Auto Spell Check	Controllo ortografico automatico
 	Auto-Collapse Iconic Panels	Comprimi automaticamente i pannelli a icona
+	Show Tool Group Labels	Mostra etichette dei gruppi di strumenti
 	Auto-Rotate (turn the paper to each artboard)	Rotazione automatica (orienta la carta in base a ogni tavola da disegno)
 	Automatic flatness	Planarità automatica
 	Automatically	Automaticamente

crates/ui-egui/src/i18n/ja.tsv

@@ -810,6 +810,7 @@
 	Auto	自動
 	Auto Size New Area Type	新規エリア内文字を自動サイズ調整
 	Auto-Collapse Iconic Panels	アイコンパネルを自動的に折りたたむ
+	Show Tool Group Labels	ツールグループのラベルを表示
 	Auto-Rotate (turn the paper to each artboard)	自動回転 (アートボードごとに用紙を回転)
 	Automatic flatness	フラットネスを自動設定
 	Automatically	自動

crates/ui-egui/src/i18n/pt-br.tsv

@@ -252,6 +252,7 @@
 	Auto Size New Area Type	Dimensionar Automaticamente Novo Texto de Área
 	Auto Spell Check	Verificação Ortográfica Automática
 	Auto-Collapse Iconic Panels	Recolher Automaticamente Painéis Icônicos
+	Show Tool Group Labels	Mostrar Rótulos dos Grupos de Ferramentas
 	Auto-Rotate (turn the paper to each artboard)	Girar Automaticamente (gire o papel para cada mesa de trabalho)
 	Automatic	Automático
 	Automatic flatness	Achatamento automático

crates/ui-egui/src/i18n/ru.tsv

@@ -201,6 +201,7 @@
 	Auto Size New Area Type	Автоматически подгонять размер нового текста в области
 	Auto Spell Check	Автоматическая проверка орфографии
 	Auto-Collapse Iconic Panels	Автоматически сворачивать значки панелей
+	Show Tool Group Labels	Показывать названия групп инструментов
 	Auto-Rotate (turn the paper to each artboard)	Автоповорот (поворачивать лист по каждой монтажной области)
 	Automatic flatness	Автоматическая плоскостность
 	Automatically	Автоматически

crates/ui-egui/src/i18n/zh-hans.tsv

@@ -203,6 +203,7 @@
 	Auto Size New Area Type	自动调整新区域文字大小
 	Auto Spell Check	自动拼写检查
 	Auto-Collapse Iconic Panels	自动折叠图标面板
+	Show Tool Group Labels	显示工具组标签
 	Auto-Rotate (turn the paper to each artboard)	自动旋转 (为每个画板转动纸张)
 	Automatic flatness	自动平滑度
 	Automatically	自动

crates/ui-egui/src/i18n/zh-hant.tsv

@@ -214,6 +214,7 @@
 	Auto Size New Area Type	自動調整新區域文字大小
 	Auto Spell Check	自動拼字檢查
 	Auto-Collapse Iconic Panels	自動收合圖示面板
+	Show Tool Group Labels	顯示工具組標籤
 	Auto-Rotate (turn the paper to each artboard)	自動旋轉 (將紙張轉向各工作區域)
 	Automatic flatness	自動平滑度
 	Automatically	自動

crates/ui-egui/src/toolbar.rs

@@ -169,7 +169,11 @@ fn body(app: &mut VectorcraftApp, ui: &mut Ui, cols: usize, floating: Option<egu
         let mut raise: Option<&'static str> = None;
         let mut i = 0;
         while i < all.len() {
-            if let Some(cat) = all[i].0 {
+            if all[i].0.is_some() && !app.session.prefs.tool_group_labels {
+                // User Interface › Show Tool Group Labels off: a faint dash between the groups.
+                let (r, _) = ui.allocate_exact_size(vec2(ui.available_width(), 9.0), Sense::hover());
+                ui.painter().line_segment([r.center() - vec2(6.0, 0.0), r.center() + vec2(6.0, 0.0)], egui::Stroke::new(1.0, t.divider));
+            } else if let Some(cat) = all[i].0 {
                 let (r, _) = ui.allocate_exact_size(vec2(ui.available_width(), 18.0), Sense::hover());
                 // A long name is cut to its first four characters in the single column.
                 let cat = tl!(cat);
@@ -1205,6 +1209,35 @@ pub(crate) mod tests {
         assert!(r.min.x.is_finite() && r.min.y.is_finite() && r.left() >= 0.0, "on screen: {r:?}");
     }
 
+    /// User Interface › Show Tool Group Labels (#663): on, the toolbar names its groups; off, it
+    /// shows none of the names, a faint dash between the groups instead.
+    #[test]
+    fn tool_group_labels_can_be_hidden() {
+        fn texts(s: &egui::Shape, out: &mut Vec<String>) {
+            match s {
+                egui::Shape::Text(t) => out.push(t.galley.text().to_string()),
+                egui::Shape::Vec(v) => v.iter().for_each(|s| texts(s, out)),
+                _ => {}
+            }
+        }
+        let mut app = VectorcraftApp::new(Session::new(), Default::default());
+        let ctx = egui::Context::default();
+        crate::theme::install_fonts(&ctx);
+        let draw = |app: &mut VectorcraftApp| {
+            let raw = egui::RawInput { screen_rect: Some(egui::Rect::from_min_size(Pos2::ZERO, vec2(400.0, 1600.0))), ..Default::default() };
+            let mut out = ctx.run_ui(raw, |ui| show(app, ui));
+            out.textures_delta.clear();
+            let mut shown = vec![];
+            out.shapes.iter().for_each(|c| texts(&c.shape, &mut shown));
+            shown
+        };
+        let with = draw(&mut app);
+        assert!(with.iter().any(|t| t == "Shapes") && with.iter().any(|t| t == "Draw"), "{with:?}");
+        app.run("prefs.set", json!({"key": "toolGroupLabels", "value": false})).unwrap();
+        let without = draw(&mut app);
+        assert!(!without.iter().any(|t| ["Select", "Shapes", "Draw", "Modify", "Type"].contains(&t.as_str())), "{without:?}");
+    }
+
     /// Hover `at` for two seconds, coming from elsewhere: the texts painted meanwhile.
     fn hovered_texts(app: &mut VectorcraftApp, ctx: &egui::Context, t0: f64, at: Pos2) -> Vec<String> {
         fn texts(s: &egui::Shape, out: &mut Vec<String>) {