Add backdrop-color setting to overview {}

niri-config/src/lib.rs

@@ -447,8 +447,8 @@ pub struct Output {
     pub focus_at_startup: bool,
     #[knuffel(child, default = DEFAULT_BACKGROUND_COLOR)]
     pub background_color: Color,
-    #[knuffel(child, default = DEFAULT_BACKDROP_COLOR)]
-    pub backdrop_color: Color,
+    #[knuffel(child)]
+    pub backdrop_color: Option<Color>,
 }
 
 impl Output {
@@ -477,7 +477,7 @@ impl Default for Output {
             mode: None,
             variable_refresh_rate: None,
             background_color: DEFAULT_BACKGROUND_COLOR,
-            backdrop_color: DEFAULT_BACKDROP_COLOR,
+            backdrop_color: None,
         }
     }
 }
@@ -1264,12 +1264,15 @@ pub struct HotCorners {
 pub struct Overview {
     #[knuffel(child, unwrap(argument), default = Self::default().zoom)]
     pub zoom: FloatOrInt<0, 1>,
+    #[knuffel(child, default = Self::default().backdrop_color)]
+    pub backdrop_color: Color,
 }
 
 impl Default for Overview {
     fn default() -> Self {
         Self {
             zoom: FloatOrInt(0.5),
+            backdrop_color: DEFAULT_BACKDROP_COLOR,
         }
     }
 }
@@ -4225,12 +4228,7 @@ mod tests {
                             b: 0.4,
                             a: 1.0,
                         },
-                        backdrop_color: Color {
-                            r: 0.15,
-                            g: 0.15,
-                            b: 0.15,
-                            a: 1.0,
-                        },
+                        backdrop_color: None,
                     },
                 ],
             ),
@@ -4603,6 +4601,12 @@ mod tests {
                 zoom: FloatOrInt(
                     0.5,
                 ),
+                backdrop_color: Color {
+                    r: 0.15,
+                    g: 0.15,
+                    b: 0.15,
+                    a: 1.0,
+                },
             },
             environment: Environment(
                 [

src/niri.rs

@@ -15,7 +15,7 @@ use anyhow::{bail, ensure, Context};
 use calloop::futures::Scheduler;
 use niri_config::{
     Config, FloatOrInt, Key, Modifiers, OutputName, PreviewRender, TrackLayout,
-    WarpMouseToFocusMode, WorkspaceReference, DEFAULT_BACKDROP_COLOR, DEFAULT_BACKGROUND_COLOR,
+    WarpMouseToFocusMode, WorkspaceReference, DEFAULT_BACKGROUND_COLOR,
 };
 use smithay::backend::allocator::Fourcc;
 use smithay::backend::input::Keycode;
@@ -1394,6 +1394,11 @@ impl State {
             output_config_changed = true;
         }
 
+        // FIXME: move backdrop rendering into layout::Monitor, then this will become unnecessary.
+        if config.overview.backdrop_color != old_config.overview.backdrop_color {
+            output_config_changed = true;
+        }
+
         *old_config = config;
 
         if let Some(outputs) = preserved_output_config {
@@ -1471,8 +1476,8 @@ impl State {
 
         for output in self.niri.global_space.outputs() {
             let name = output.user_data().get::<OutputName>().unwrap();
-            let config = self.niri.config.borrow_mut();
-            let config = config.outputs.find(name);
+            let full_config = self.niri.config.borrow_mut();
+            let config = full_config.outputs.find(name);
 
             let scale = config
                 .and_then(|c| c.scale)
@@ -1513,8 +1518,8 @@ impl State {
             let background_color = Color32F::from(background_color);
 
             let mut backdrop_color = config
-                .map(|c| c.backdrop_color)
-                .unwrap_or(DEFAULT_BACKDROP_COLOR)
+                .and_then(|c| c.backdrop_color)
+                .unwrap_or(full_config.overview.backdrop_color)
                 .to_array_unpremul();
             backdrop_color[3] = 1.;
             let backdrop_color = Color32F::from(backdrop_color);
@@ -2701,8 +2706,8 @@ impl Niri {
         background_color[3] = 1.;
 
         let mut backdrop_color = c
-            .map(|c| c.backdrop_color)
-            .unwrap_or(DEFAULT_BACKDROP_COLOR)
+            .and_then(|c| c.backdrop_color)
+            .unwrap_or(config.overview.backdrop_color)
             .to_array_unpremul();
         backdrop_color[3] = 1.;
 

wiki/Configuration:-Miscellaneous.md

@@ -25,6 +25,7 @@ cursor {
 
 overview {
     zoom 0.5
+    backdrop-color "#262626"
 }
 
 clipboard {
@@ -161,6 +162,17 @@ overview {
 }
 ```
 
+`backdrop-color` sets the backdrop color behind workspaces in the overview.
+The backdrop is also visible between workspaces when switching.
+
+The alpha channel for this color will be ignored.
+
+```kdl
+overview {
+    backdrop-color "#262626"
+}
+```
+
 ### `clipboard`
 
 <sup>Since: 25.02</sup>

wiki/Overview.md

@@ -38,6 +38,14 @@ overview {
 }
 ```
 
+To change the color behind the workspaces, use the `backdrop-color` setting:
+
+```kdl
+overview {
+    backdrop-color "#777777"
+}
+```
+
 You can also disable the hot corner:
 
 ```kdl
@@ -48,11 +56,3 @@ gestures {
     }
 }
 ```
-
-To change the color behind the workspaces, use the `backdrop-color` output setting:
-
-```kdl
-output "HDMI-A-1" {
-    backdrop-color "#777777"
-}
-```