config: allow disabling window titles

jay-config/src/_private/client.rs

@@ -1006,6 +1006,16 @@ impl ConfigClient {
         show
     }
 
+    pub fn set_show_titles(&self, show: bool) {
+        self.send(&ClientMessage::SetShowTitles { show });
+    }
+
+    pub fn get_show_titles(&self) -> bool {
+        let res = self.send_with_response(&ClientMessage::GetShowTitles);
+        get_response!(res, true, GetShowTitles { show });
+        show
+    }
+
     pub fn set_middle_click_paste_enabled(&self, enabled: bool) {
         self.send(&ClientMessage::SetMiddleClickPasteEnabled { enabled });
     }

jay-config/src/_private/ipc.rs

@@ -801,6 +801,10 @@ pub enum ClientMessage<'a> {
     SeatEnableUnicodeInput {
         seat: Seat,
     },
+    SetShowTitles {
+        show: bool,
+    },
+    GetShowTitles,
 }
 
 #[derive(Serialize, Deserialize, Debug)]
@@ -1036,6 +1040,9 @@ pub enum Response {
     SeatGetSimpleImEnabled {
         enabled: bool,
     },
+    GetShowTitles {
+        show: bool,
+    },
 }
 
 #[derive(Serialize, Deserialize, Debug)]

jay-config/src/lib.rs

@@ -336,6 +336,24 @@ pub fn toggle_show_bar() {
     get.set_show_bar(!get.get_show_bar());
 }
 
+/// Sets whether title bars on windows are shown.
+///
+/// The default is `true`.
+pub fn set_show_titles(show: bool) {
+    get!().set_show_titles(show)
+}
+
+/// Returns whether title bars on windows are shown.
+pub fn get_show_titles() -> bool {
+    get!(true).get_show_titles()
+}
+
+/// Toggles whether title bars on windows are shown.
+pub fn toggle_show_titles() {
+    let get = get!();
+    get.set_show_titles(!get.get_show_titles());
+}
+
 /// Sets a callback to run when this config is unloaded.
 ///
 /// Only one callback can be set at a time. If another callback is already set, it will be

src/config/handler.rs

@@ -1381,6 +1381,17 @@ impl ConfigProxyHandler {
         });
     }
 
+    fn handle_set_show_titles(&self, show: bool) {
+        self.state.theme.show_titles.set(show);
+        self.spaces_change();
+    }
+
+    fn handle_get_show_titles(&self) {
+        self.respond(Response::GetShowTitles {
+            show: self.state.theme.show_titles.get(),
+        });
+    }
+
     fn handle_set_show_float_pin_icon(&self, show: bool) {
         self.state.show_pin_icon.set(show);
         for stacked in self.state.root.stacked.iter() {
@@ -3188,6 +3199,8 @@ impl ConfigProxyHandler {
                 .wrn("get_content_type")?,
             ClientMessage::SetShowBar { show } => self.handle_set_show_bar(show),
             ClientMessage::GetShowBar => self.handle_get_show_bar(),
+            ClientMessage::SetShowTitles { show } => self.handle_set_show_titles(show),
+            ClientMessage::GetShowTitles => self.handle_get_show_titles(),
             ClientMessage::SeatFocusHistory { seat, timeline } => self
                 .handle_seat_focus_history(seat, timeline)
                 .wrn("seat_focus_history")?,

src/icons.rs

@@ -49,7 +49,7 @@ pub enum IconsError {
 impl Icons {
     pub fn update_sizes(&self, state: &State) {
         let mut sizes = AHashSet::new();
-        let height = state.theme.sizes.title_height.get();
+        let height = state.theme.title_height();
         for &(scale, _) in &*state.scales.lock() {
             let [size] = scale.pixel_size([height]);
             if size > 0 {
@@ -64,7 +64,7 @@ impl Icons {
     }
 
     pub fn get(&self, state: &State, scale: Scale) -> Option<Rc<SizedIcons>> {
-        let [size] = scale.pixel_size([state.theme.sizes.title_height.get()]);
+        let [size] = scale.pixel_size([state.theme.title_height()]);
         if let Some(icons) = self.icons.get(&size) {
             return icons;
         }

src/it/tests/t0002_window.rs

@@ -21,14 +21,14 @@ async fn test(run: Rc<TestRun>) -> Result<(), TestError> {
     tassert_eq!(window.tl.core.width.get(), 800);
     tassert_eq!(
         window.tl.core.height.get(),
-        600 - 2 * (run.state.theme.sizes.title_height.get() + 1)
+        600 - 2 * run.state.theme.title_plus_underline_height()
     );
 
     tassert_eq!(
         window.tl.server.node_absolute_position(),
         Rect::new_sized(
             0,
-            2 * (run.state.theme.sizes.title_height.get() + 1),
+            2 * run.state.theme.title_plus_underline_height(),
             window.tl.core.width.get(),
             window.tl.core.height.get(),
         )

src/it/tests/t0003_multi_window.rs

@@ -21,7 +21,7 @@ async fn test(run: Rc<TestRun>) -> Result<(), TestError> {
     let window2 = client.create_window().await?;
     window2.map().await?;
 
-    let otop = 2 * (run.state.theme.sizes.title_height.get() + 1);
+    let otop = 2 * run.state.theme.title_plus_underline_height();
     let bw = run.state.theme.sizes.border_width.get();
 
     tassert_eq!(

src/renderer.rs

@@ -501,7 +501,9 @@ impl Renderer<'_> {
         };
         let pos = floating.position.get();
         let theme = &self.state.theme;
-        let th = theme.sizes.title_height.get();
+        let th = theme.title_height();
+        let tpuh = theme.title_plus_underline_height();
+        let tuh = theme.title_underline_height();
         let bw = theme.sizes.border_width.get();
         let bc = theme.colors.border.get();
         let tc = if floating.active.get() {
@@ -524,7 +526,7 @@ impl Renderer<'_> {
         let title = [Rect::new_sized(x + bw, y + bw, pos.width() - 2 * bw, th).unwrap()];
         self.base.fill_boxes(&title, &tc, srgb);
         let title_underline =
-            [Rect::new_sized(x + bw, y + bw + th, pos.width() - 2 * bw, 1).unwrap()];
+            [Rect::new_sized(x + bw, y + bw + th, pos.width() - 2 * bw, tuh).unwrap()];
         self.base.fill_boxes(&title_underline, &uc, srgb);
         let rect = floating.title_rect.get().move_(x, y);
         let bounds = self.base.scale_rect(rect);
@@ -584,9 +586,9 @@ impl Renderer<'_> {
         }
         let body = Rect::new_sized(
             x + bw,
-            y + bw + th + 1,
+            y + bw + tpuh,
             pos.width() - 2 * bw,
-            pos.height() - 2 * bw - th - 1,
+            pos.height() - 2 * bw - tpuh,
         )
         .unwrap();
         let scissor_body = self.base.scale_rect(body);

src/state.rs

@@ -826,7 +826,8 @@ impl State {
         abs_pos: Option<(i32, i32)>,
     ) {
         width += 2 * self.theme.sizes.border_width.get();
-        height += 2 * self.theme.sizes.border_width.get() + self.theme.sizes.title_height.get() + 1;
+        height +=
+            2 * self.theme.sizes.border_width.get() + self.theme.title_plus_underline_height();
         let output = workspace.output.get();
         let output_rect = output.global.pos.get();
         let position = if let Some((mut x1, mut y1)) = abs_pos {
@@ -836,7 +837,7 @@ impl State {
             if y1 > output_rect.y2() {
                 y1 = output_rect.y2();
             }
-            y1 -= self.theme.sizes.border_width.get() + self.theme.sizes.title_height.get() + 1;
+            y1 -= self.theme.sizes.border_width.get() + self.theme.title_plus_underline_height();
             x1 -= self.theme.sizes.border_width.get();
             Rect::new_sized(x1, y1, width, height).unwrap()
         } else {

src/theme.rs

@@ -466,6 +466,7 @@ pub struct Theme {
     pub bar_font: CloneCell<Option<Arc<String>>>,
     pub title_font: CloneCell<Option<Arc<String>>>,
     pub default_font: Arc<String>,
+    pub show_titles: Cell<bool>,
 }
 
 impl Default for Theme {
@@ -478,6 +479,7 @@ impl Default for Theme {
             bar_font: Default::default(),
             title_font: Default::default(),
             default_font,
+            show_titles: Cell::new(true),
         }
     }
 }
@@ -490,4 +492,24 @@ impl Theme {
     pub fn bar_font(&self) -> Arc<String> {
         self.bar_font.get().unwrap_or_else(|| self.font.get())
     }
+
+    pub fn title_height(&self) -> i32 {
+        if self.show_titles.get() {
+            self.sizes.title_height.get()
+        } else {
+            0
+        }
+    }
+
+    pub fn title_underline_height(&self) -> i32 {
+        if self.show_titles.get() { 1 } else { 0 }
+    }
+
+    pub fn title_plus_underline_height(&self) -> i32 {
+        if self.show_titles.get() {
+            self.sizes.title_height.get() + 1
+        } else {
+            0
+        }
+    }
 }

src/tree/container.rs

@@ -426,7 +426,7 @@ impl ContainerNode {
         self.mono_content
             .set(child.content.get().at_point(mb.x1(), mb.y1()));
 
-        let th = self.state.theme.sizes.title_height.get();
+        let th = self.state.theme.title_height();
         let bw = self.state.theme.sizes.border_width.get();
         let num_children = self.num_children.get() as i32;
         let content_width = self.width.get().sub(bw * (num_children - 1)).max(0);
@@ -449,7 +449,8 @@ impl ContainerNode {
     fn perform_split_layout(self: &Rc<Self>) {
         let sum_factors = self.sum_factors.get();
         let border_width = self.state.theme.sizes.border_width.get();
-        let title_height = self.state.theme.sizes.title_height.get();
+        let title_height_tmp = self.state.theme.title_height();
+        let title_plus_underline_height = self.state.theme.title_plus_underline_height();
         let split = self.split.get();
         let (content_size, other_content_size) = match split {
             ContainerSplit::Horizontal => (self.content_width.get(), self.content_height.get()),
@@ -468,16 +469,24 @@ impl ContainerNode {
             body_size = body_size.min(remaining_content_size);
             remaining_content_size -= body_size;
             let (x1, y1, width, height) = match split {
-                ContainerSplit::Horizontal => {
+                ContainerSplit::Horizontal => (
-                    (pos, title_height + 1, body_size, other_content_size)
+                    pos,
-                }
+                    title_plus_underline_height,
-                _ => (0, pos + title_height + 1, other_content_size, body_size),
+                    body_size,
+                    other_content_size,
+                ),
+                _ => (
+                    0,
+                    pos + title_plus_underline_height,
+                    other_content_size,
+                    body_size,
+                ),
             };
             let body = Rect::new_sized(x1, y1, width, height).unwrap();
             child.body.set(body);
             pos += body_size + border_width;
             if split == ContainerSplit::Vertical {
-                pos += title_height + 1;
+                pos += title_plus_underline_height;
             }
         }
         if remaining_content_size > 0 {
@@ -494,13 +503,19 @@ impl ContainerNode {
                 let (x1, y1, width, height, size) = match split {
                     ContainerSplit::Horizontal => {
                         let width = body.width() + add;
-                        (pos, title_height + 1, width, other_content_size, width)
+                        (
+                            pos,
+                            title_plus_underline_height,
+                            width,
+                            other_content_size,
+                            width,
+                        )
                     }
                     _ => {
                         let height = body.height() + add;
                         (
                             0,
-                            pos + title_height + 1,
+                            pos + title_plus_underline_height,
                             other_content_size,
                             height,
                             height,
@@ -511,7 +526,7 @@ impl ContainerNode {
                 child.body.set(body);
                 pos += size + border_width;
                 if split == ContainerSplit::Vertical {
-                    pos += title_height + 1;
+                    pos += title_plus_underline_height;
                 }
             }
         }
@@ -521,9 +536,9 @@ impl ContainerNode {
             child.title_rect.set(
                 Rect::new_sized(
                     body.x1(),
-                    body.y1() - title_height - 1,
+                    body.y1() - title_plus_underline_height,
                     body.width(),
-                    title_height,
+                    title_height_tmp,
                 )
                 .unwrap(),
             );
@@ -535,20 +550,23 @@ impl ContainerNode {
 
     fn update_content_size(&self) {
         let border_width = self.state.theme.sizes.border_width.get();
-        let title_height = self.state.theme.sizes.title_height.get();
+        let title_plus_underline_height = self.state.theme.title_plus_underline_height();
         let nc = self.num_children.get();
         match self.split.get() {
             ContainerSplit::Horizontal => {
                 let new_content_size = self.width.get().sub((nc - 1) as i32 * border_width).max(0);
                 self.content_width.set(new_content_size);
                 self.content_height
-                    .set(self.height.get().sub(title_height + 1).max(0));
+                    .set(self.height.get().sub(title_plus_underline_height).max(0));
             }
             ContainerSplit::Vertical => {
                 let new_content_size = self
                     .height
                     .get()
-                    .sub(title_height + 1 + (nc - 1) as i32 * (border_width + title_height + 1))
+                    .sub(
+                        title_plus_underline_height
+                            + (nc - 1) as i32 * (border_width + title_plus_underline_height),
+                    )
                     .max(0);
                 self.content_height.set(new_content_size);
                 self.content_width.set(self.width.get());
@@ -557,9 +575,9 @@ impl ContainerNode {
         self.mono_body.set(
             Rect::new_sized(
                 0,
-                title_height + 1,
+                title_plus_underline_height,
                 self.width.get(),
-                self.height.get().sub(title_height + 1).max(0),
+                self.height.get().sub(title_plus_underline_height).max(0),
             )
             .unwrap(),
         );
@@ -576,7 +594,7 @@ impl ContainerNode {
     ) {
         let mut x = x.round_down();
         let mut y = y.round_down();
-        let title_height = self.state.theme.sizes.title_height.get();
+        let title_plus_underline_height = self.state.theme.title_plus_underline_height();
         let mut seats = self.cursors.borrow_mut();
         let seat_state = seats.entry(id).or_insert_with(|| CursorState {
             cursor: KnownCursor::Default,
@@ -648,7 +666,7 @@ impl ContainerNode {
         let new_cursor = if self.mono_child.is_some() {
             KnownCursor::Default
         } else if self.split.get() == ContainerSplit::Horizontal {
-            if y < title_height + 1 {
+            if y < title_plus_underline_height {
                 KnownCursor::Default
             } else {
                 KnownCursor::EwResize
@@ -658,7 +676,7 @@ impl ContainerNode {
             for child in self.children.iter() {
                 let body = child.body.get();
                 if body.y1() > y {
-                    if body.y1() - y > title_height + 1 {
+                    if body.y1() - y > title_plus_underline_height {
                         cursor = KnownCursor::NsResize
                     }
                     break;
@@ -706,7 +724,7 @@ impl ContainerNode {
             return on_completed.event();
         };
         let theme = &self.state.theme;
-        let th = theme.sizes.title_height.get();
+        let th = theme.title_height();
         let font = theme.title_font();
         let last_active = self.focus_history.last().map(|v| v.node.node_id());
         let have_active = self.children.iter().any(|c| c.active.get());
@@ -794,7 +812,9 @@ impl ContainerNode {
         let mut rd = self.render_data.borrow_mut();
         let rd = rd.deref_mut();
         let theme = &self.state.theme;
-        let th = theme.sizes.title_height.get();
+        let th = theme.title_height();
+        let tpuh = theme.title_plus_underline_height();
+        let tuh = theme.title_underline_height();
         let bw = theme.sizes.border_width.get();
         let cwidth = self.width.get();
         let cheight = self.height.get();
@@ -820,7 +840,7 @@ impl ContainerNode {
                     abs_x,
                     abs_y + rect.y1(),
                     cwidth,
-                    rect.height() + 1,
+                    rect.height() + tuh,
                 ));
             }
             if i > 0 {
@@ -856,11 +876,11 @@ impl ContainerNode {
         }
         if mono {
             rd.underline_rects
-                .push(Rect::new_sized(0, th, cwidth, 1).unwrap());
+                .push(Rect::new_sized(0, th, cwidth, tuh).unwrap());
         }
         if self.toplevel_data.visible.get() && (mono || split == ContainerSplit::Horizontal) {
             self.state
-                .damage(Rect::new_sized_unchecked(abs_x, abs_y, cwidth, th + 1));
+                .damage(Rect::new_sized_unchecked(abs_x, abs_y, cwidth, tpuh));
         }
         rd.titles.remove_if(|_, v| v.is_empty());
     }
@@ -1193,7 +1213,7 @@ impl ContainerNode {
         };
         if button == BTN_RIGHT && pressed {
             if self.mono_child.is_some() || self.split.get() == ContainerSplit::Horizontal {
-                if seat_data.y < self.state.theme.sizes.title_height.get() {
+                if seat_data.y < self.state.theme.title_height() {
                     self.toggle_mono();
                 }
             } else {
@@ -1314,7 +1334,7 @@ impl ContainerNode {
             prev_center,
             0,
             self.width.get(),
-            self.state.theme.sizes.title_height.get(),
+            self.state.theme.title_height(),
         )?
         .move_(self.abs_x1.get(), self.abs_y1.get())
         .intersect(abs_bounds);
@@ -1339,7 +1359,7 @@ impl ContainerNode {
         abs_x: i32,
         abs_y: i32,
     ) -> Option<TileDragDestination> {
-        let th = self.state.theme.sizes.title_height.get();
+        let th = self.state.theme.title_height();
         if abs_y < self.abs_y1.get() + th {
             return self.tile_drag_destination_mono_titles(source, abs_bounds, abs_x, abs_y);
         }
@@ -1694,7 +1714,7 @@ impl Node for ContainerNode {
             Some(s) => s,
             _ => return,
         };
-        if seat_data.y > self.state.theme.sizes.title_height.get() {
+        if seat_data.y > self.state.theme.title_height() {
             return;
         }
         let cur_mc = match self.mono_child.get() {
@@ -1984,9 +2004,9 @@ impl ContainingNode for ContainerNode {
         let Some(parent) = self.toplevel_data.parent.get() else {
             return;
         };
-        let th = self.state.theme.sizes.title_height.get();
+        let tpuh = self.state.theme.title_plus_underline_height();
         if self.mono_child.is_some() {
-            parent.cnode_set_child_position(&*self, x, y - th - 1);
+            parent.cnode_set_child_position(&*self, x, y - tpuh);
         } else {
             let children = self.child_nodes.borrow();
             let Some(child) = children.get(&child.node_id()) else {
@@ -2007,7 +2027,7 @@ impl ContainingNode for ContainerNode {
         new_y2: Option<i32>,
     ) {
         let theme = &self.state.theme;
-        let th = theme.sizes.title_height.get();
+        let tpuh = theme.title_plus_underline_height();
         let bw = theme.sizes.border_width.get();
         let mut left_outside = false;
         let mut right_outside = false;
@@ -2049,7 +2069,7 @@ impl ContainingNode for ContainerNode {
             }
             let (new_delta, between) = match split {
                 ContainerSplit::Horizontal => (self.abs_x1.get(), bw),
-                ContainerSplit::Vertical => (self.abs_y1.get(), bw + th + 1),
+                ContainerSplit::Vertical => (self.abs_y1.get(), bw + tpuh),
             };
             let new_i1 = new_i1.map(|v| v - new_delta);
             let new_i2 = new_i2.map(|v| v - new_delta);
@@ -2117,10 +2137,10 @@ impl ContainingNode for ContainerNode {
             x2 = new_x2.map(|v| v.max(x1.unwrap_or(pos.x1())));
         }
         if top_outside {
-            y1 = new_y1.map(|v| (v - th - 1).min(pos.y2() - th - 1));
+            y1 = new_y1.map(|v| (v - tpuh).min(pos.y2() - tpuh));
         }
         if bottom_outside {
-            y2 = new_y2.map(|v| v.max(y1.unwrap_or(pos.y1()) + th + 1));
+            y2 = new_y2.map(|v| v.max(y1.unwrap_or(pos.y1()) + tpuh));
         }
         if ((x1.is_some() && x1 != Some(pos.x1()))
             || (x2.is_some() && x2 != Some(pos.x2()))

src/tree/float.rs

@@ -177,12 +177,13 @@ impl FloatNode {
         let pos = self.position.get();
         let theme = &self.state.theme;
         let bw = theme.sizes.border_width.get();
-        let th = theme.sizes.title_height.get();
+        let th = theme.title_height();
+        let tpuh = theme.title_plus_underline_height();
         let cpos = Rect::new_sized(
             pos.x1() + bw,
-            pos.y1() + bw + th + 1,
+            pos.y1() + bw + tpuh,
             (pos.width() - 2 * bw).max(0),
-            (pos.height() - 2 * bw - th - 1).max(0),
+            (pos.height() - 2 * bw - tpuh).max(0),
         )
         .unwrap();
         let tr = Rect::new_sized(bw, bw, (pos.width() - 2 * bw).max(0), th).unwrap();
@@ -248,7 +249,7 @@ impl FloatNode {
 
     fn render_title_phase2(&self) {
         let theme = &self.state.theme;
-        let th = theme.sizes.title_height.get();
+        let th = theme.title_height();
         let bw = theme.sizes.border_width.get();
         let title = self.title.borrow();
         let tt = &*self.title_textures.borrow();
@@ -277,7 +278,7 @@ impl FloatNode {
         let y = y.round_down();
         let theme = &self.state.theme;
         let bw = theme.sizes.border_width.get();
-        let th = theme.sizes.title_height.get();
+        let tpuh = theme.title_plus_underline_height();
         let mut seats = self.cursors.borrow_mut();
         let seat_state = seats.entry(id).or_insert_with(|| CursorState {
             cursor: KnownCursor::Default,
@@ -313,7 +314,7 @@ impl FloatNode {
                 }
                 OpType::ResizeTop => {
                     y1 += y - seat_state.dist_ver;
-                    y1 = y1.min(y2 - 2 * bw - th - 1);
+                    y1 = y1.min(y2 - 2 * bw - tpuh);
                 }
                 OpType::ResizeRight => {
                     x2 += x - pos.width() + seat_state.dist_hor;
@@ -321,31 +322,31 @@ impl FloatNode {
                 }
                 OpType::ResizeBottom => {
                     y2 += y - pos.height() + seat_state.dist_ver;
-                    y2 = y2.max(y1 + 2 * bw + th + 1);
+                    y2 = y2.max(y1 + 2 * bw + tpuh);
                 }
                 OpType::ResizeTopLeft => {
                     x1 += x - seat_state.dist_hor;
                     y1 += y - seat_state.dist_ver;
                     x1 = x1.min(x2 - 2 * bw);
-                    y1 = y1.min(y2 - 2 * bw - th - 1);
+                    y1 = y1.min(y2 - 2 * bw - tpuh);
                 }
                 OpType::ResizeTopRight => {
                     x2 += x - pos.width() + seat_state.dist_hor;
                     y1 += y - seat_state.dist_ver;
                     x2 = x2.max(x1 + 2 * bw);
-                    y1 = y1.min(y2 - 2 * bw - th - 1);
+                    y1 = y1.min(y2 - 2 * bw - tpuh);
                 }
                 OpType::ResizeBottomLeft => {
                     x1 += x - seat_state.dist_hor;
                     y2 += y - pos.height() + seat_state.dist_ver;
                     x1 = x1.min(x2 - 2 * bw);
-                    y2 = y2.max(y1 + 2 * bw + th + 1);
+                    y2 = y2.max(y1 + 2 * bw + tpuh);
                 }
                 OpType::ResizeBottomRight => {
                     x2 += x - pos.width() + seat_state.dist_hor;
                     y2 += y - pos.height() + seat_state.dist_ver;
                     x2 = x2.max(x1 + 2 * bw);
-                    y2 = y2.max(y1 + 2 * bw + th + 1);
+                    y2 = y2.max(y1 + 2 * bw + tpuh);
                 }
             }
             let new_pos = Rect::new(x1, y1, x2, y2).unwrap();
@@ -438,7 +439,7 @@ impl FloatNode {
             return;
         }
         let bw = self.state.theme.sizes.border_width.get();
-        let th = self.state.theme.sizes.title_height.get();
+        let th = self.state.theme.title_height();
         let mut x1 = pos.x1();
         let mut x2 = pos.x2();
         let mut y1 = pos.y1();
@@ -553,7 +554,7 @@ impl FloatNode {
             _ => return,
         };
         let bw = self.state.theme.sizes.border_width.get();
-        let th = self.state.theme.sizes.title_height.get();
+        let th = self.state.theme.title_height();
         let mut is_icon_press = false;
         if pressed && cursor_data.x >= bw && cursor_data.y >= bw && cursor_data.y < bw + th {
             enum FloatIcon {
@@ -647,11 +648,11 @@ impl FloatNode {
         let child = self.child.get()?;
         let theme = &self.state.theme.sizes;
         let bw = theme.border_width.get();
-        let th = theme.title_height.get();
+        let tpuh = self.state.theme.title_plus_underline_height();
         let pos = self.position.get();
         let body = Rect::new(
             pos.x1() + bw,
-            pos.y1() + bw + th + 1,
+            pos.y1() + bw + tpuh,
             pos.x2() - bw,
             pos.y2() - bw,
         )?;
@@ -732,13 +733,13 @@ impl Node for FloatNode {
         usecase: FindTreeUsecase,
     ) -> FindTreeResult {
         let theme = &self.state.theme;
-        let th = theme.sizes.title_height.get();
+        let tpuh = theme.title_plus_underline_height();
         let bw = theme.sizes.border_width.get();
         let pos = self.position.get();
         if x < bw || x >= pos.width() - bw {
             return FindTreeResult::AcceptsInput;
         }
-        if y < bw + th + 1 || y >= pos.height() - bw {
+        if y < bw + tpuh || y >= pos.height() - bw {
             return FindTreeResult::AcceptsInput;
         }
         let child = match self.child.get() {
@@ -746,7 +747,7 @@ impl Node for FloatNode {
             _ => return FindTreeResult::Other,
         };
         let x = x - bw;
-        let y = y - bw - th - 1;
+        let y = y - bw - tpuh;
         tree.push(FoundNode {
             node: child.clone(),
             x,
@@ -928,9 +929,9 @@ impl ContainingNode for FloatNode {
 
     fn cnode_set_child_position(self: Rc<Self>, _child: &dyn Node, x: i32, y: i32) {
         let theme = &self.state.theme;
-        let th = theme.sizes.title_height.get();
+        let tpuh = theme.title_plus_underline_height();
         let bw = theme.sizes.border_width.get();
-        let (x, y) = (x - bw, y - th - bw - 1);
+        let (x, y) = (x - bw, y - tpuh - bw);
         let pos = self.position.get();
         if pos.position() != (x, y) {
             let new_pos = pos.at_point(x, y);
@@ -950,7 +951,7 @@ impl ContainingNode for FloatNode {
         new_y2: Option<i32>,
     ) {
         let theme = &self.state.theme;
-        let th = theme.sizes.title_height.get();
+        let tpuh = theme.title_plus_underline_height();
         let bw = theme.sizes.border_width.get();
         let pos = self.position.get();
         let mut x1 = pos.x1();
@@ -964,10 +965,10 @@ impl ContainingNode for FloatNode {
             x2 = (v + bw).max(x1 + bw + bw);
         }
         if let Some(v) = new_y1 {
-            y1 = (v - th - bw - 1).min(y2 - bw - th - bw - 1);
+            y1 = (v - tpuh - bw).min(y2 - bw - tpuh - bw);
         }
         if let Some(v) = new_y2 {
-            y2 = (v + bw).max(y1 + bw + th + bw + 1);
+            y2 = (v + bw).max(y1 + bw + tpuh + bw);
         }
         let new_pos = Rect::new(x1, y1, x2, y2).unwrap();
         if new_pos != pos {

toml-config/src/config.rs

@@ -79,6 +79,8 @@ pub enum SimpleCommand {
     KillClient,
     ShowBar(bool),
     ToggleBar,
+    ShowTitles(bool),
+    ToggleTitles,
     FocusHistory(Timeline),
     FocusLayerRel(LayerDirection),
     FocusTiles,
@@ -525,6 +527,7 @@ pub struct Config {
     pub pointer_revert_key: Option<KeySym>,
     pub use_hardware_cursor: Option<bool>,
     pub show_bar: Option<bool>,
+    pub show_titles: Option<bool>,
     pub focus_history: Option<FocusHistory>,
     pub middle_click_paste: Option<bool>,
     pub input_modes: AHashMap<String, InputMode>,

toml-config/src/config/parsers/action.rs

@@ -146,6 +146,9 @@ impl ActionParser<'_> {
             "show-bar" => ShowBar(true),
             "hide-bar" => ShowBar(false),
             "toggle-bar" => ToggleBar,
+            "show-titles" => ShowTitles(true),
+            "hide-titles" => ShowTitles(false),
+            "toggle-titles" => ToggleTitles,
             "focus-prev" => FocusHistory(Timeline::Older),
             "focus-next" => FocusHistory(Timeline::Newer),
             "focus-below" => FocusLayerRel(LayerDirection::Below),

toml-config/src/config/parsers/config.rs

@@ -146,6 +146,7 @@ impl Parser for ConfigParser<'_> {
                 workspace_display_order_val,
                 auto_reload,
                 simple_im_val,
+                show_titles,
             ),
         ) = ext.extract((
             (
@@ -202,6 +203,7 @@ impl Parser for ConfigParser<'_> {
                 opt(val("workspace-display-order")),
                 recover(opt(bol("auto-reload"))),
                 opt(val("simple-im")),
+                recover(opt(bol("show-titles"))),
             ),
         ))?;
         let mut keymap = None;
@@ -562,6 +564,7 @@ impl Parser for ConfigParser<'_> {
             pointer_revert_key,
             use_hardware_cursor: use_hardware_cursor.despan(),
             show_bar: show_bar.despan(),
+            show_titles: show_titles.despan(),
             focus_history,
             middle_click_paste: middle_click_paste.despan(),
             input_modes,

toml-config/src/lib.rs

@@ -39,12 +39,12 @@ use {
         on_devices_enumerated, on_idle, on_unload, quit, reload, set_color_management_enabled,
         set_default_workspace_capture, set_explicit_sync_enabled, set_float_above_fullscreen,
         set_idle, set_idle_grace_period, set_middle_click_paste_enabled, set_show_bar,
-        set_show_float_pin_icon, set_ui_drag_enabled, set_ui_drag_threshold,
+        set_show_float_pin_icon, set_show_titles, set_ui_drag_enabled, set_ui_drag_threshold,
         status::{set_i3bar_separator, set_status, set_status_command, unset_status_command},
         switch_to_vt,
         tasks::{self, JoinHandle},
         theme::{reset_colors, reset_font, reset_sizes, set_bar_font, set_font, set_title_font},
-        toggle_float_above_fullscreen, toggle_show_bar,
+        toggle_float_above_fullscreen, toggle_show_bar, toggle_show_titles,
         video::{
             ColorSpace, Connector, DrmDevice, Eotf, connectors, drm_devices,
             on_connector_connected, on_connector_disconnected, on_graphics_initialized,
@@ -200,6 +200,8 @@ impl Action {
                 SimpleCommand::KillClient => client_action!(c, c.kill()),
                 SimpleCommand::ShowBar(show) => b.new(move || set_show_bar(show)),
                 SimpleCommand::ToggleBar => b.new(toggle_show_bar),
+                SimpleCommand::ShowTitles(show) => b.new(move || set_show_titles(show)),
+                SimpleCommand::ToggleTitles => b.new(toggle_show_titles),
                 SimpleCommand::FocusHistory(timeline) => {
                     let persistent = state.persistent.clone();
                     b.new(move || persistent.seat.focus_history(timeline))
@@ -1561,6 +1563,9 @@ fn load_config(initial_load: bool, auto_reload: bool, persistent: &Rc<Persistent
     if let Some(v) = config.show_bar {
         set_show_bar(v);
     }
+    if let Some(v) = config.show_titles {
+        set_show_titles(v);
+    }
     if let Some(v) = config.focus_history {
         if let Some(v) = v.only_visible {
             persistent.seat.focus_history_set_only_visible(v);

toml-spec/spec/spec.generated.json

@@ -1030,6 +1030,10 @@
           "type": "boolean",
           "description": "Configures whether the built-in bar is shown.\n\nThe default is `true`.\n"
         },
+        "show-titles": {
+          "type": "boolean",
+          "description": "Configures whether title bars on windows are shown.\n\nThe default is `true`.\n"
+        },
         "focus-history": {
           "description": "Configures the focus-history settings.\n\n- Example:\n\n  ```toml\n  [focus-history]\n  only-visible: true\n  same-workspace: true\n  ```\n",
           "$ref": "#/$defs/FocusHistory"
@@ -1831,6 +1835,9 @@
         "show-bar",
         "hide-bar",
         "toggle-bar",
+        "show-titles",
+        "hide-titles",
+        "toggle-titles",
         "focus-prev",
         "focus-next",
         "focus-below",

toml-spec/spec/spec.generated.md

@@ -2086,6 +2086,14 @@ The table has the following fields:
 
   The value of this field should be a boolean.
 
+- `show-titles` (optional):
+
+  Configures whether title bars on windows are shown.
+  
+  The default is `true`.
+
+  The value of this field should be a boolean.
+
 - `focus-history` (optional):
 
   Configures the focus-history settings.
@@ -4159,6 +4167,18 @@ The string should have one of the following values:
 
   Toggles the built-in bar.
 
+- `show-titles`:
+
+  Shows window titles.
+
+- `hide-titles`:
+
+  Hides window titles.
+
+- `toggle-titles`:
+
+  Toggles window titles.
+
 - `focus-prev`:
 
   Focuses the previous window in the focus history.

toml-spec/spec/spec.yaml

@@ -1009,6 +1009,12 @@ SimpleActionName:
       description: Hides the built-in bar.
     - value: toggle-bar
       description: Toggles the built-in bar.
+    - value: show-titles
+      description: Shows window titles.
+    - value: hide-titles
+      description: Hides window titles.
+    - value: toggle-titles
+      description: Toggles window titles.
     - value: focus-prev
       description: Focuses the previous window in the focus history.
     - value: focus-next
@@ -2841,6 +2847,13 @@ Config:
       description: |
         Configures whether the built-in bar is shown.
 
+        The default is `true`.
+    show-titles:
+      kind: boolean
+      required: false
+      description: |
+        Configures whether title bars on windows are shown.
+        
         The default is `true`.
     focus-history:
       ref: FocusHistory