Configurable background

config.json

@@ -39,5 +39,11 @@
 		}
 	},
 	"outputMode": "active",
-	"scale": 1
+	"scale": 1,
+	"background": {
+		"red": 0,
+		"green": 0,
+		"blue": 0,
+		"opacity": 0.9
+	}
 }

src/app.rs

@@ -203,6 +203,7 @@ pub struct App {
     event_queue: EventQueue,
     cmd_queue: Arc<Mutex<VecDeque<Cmd>>>,
     widget: Option<Box<dyn Widget + Send>>,
+    bg: Color,
     inner: Arc<Mutex<AppInner>>,
     last_damage: Option<Vec<(i32, i32, i32, i32)>>,
     last_dim: (u32, u32),
@@ -256,14 +257,13 @@ impl App {
             force = true;
         }
 
-        let bg = Color::new(0.0, 0.0, 0.0, 0.9);
         if force {
-            buf.memset(&bg);
+            buf.memset(&self.bg);
         }
         let report = widget.draw(
             &mut DrawContext {
                 buf: &mut buf,
-                bg: &bg,
+                bg: &self.bg,
                 time: &time,
                 force,
             },
@@ -337,7 +337,7 @@ impl App {
         self.redraw(true)
     }
 
-    pub fn new(tx: Sender<Cmd>, output_mode: OutputMode, scale: u32) -> App {
+    pub fn new(tx: Sender<Cmd>, output_mode: OutputMode, bg: Color, scale: u32) -> App {
         let inner = Arc::new(Mutex::new(AppInner::new(tx.clone(), output_mode, scale)));
 
         //
@@ -543,6 +543,7 @@ impl App {
             cmd_queue: cmd_queue,
             pools: pools,
             widget: None,
+            bg: bg,
             inner: inner,
             last_damage: None,
             last_dim: (0, 0),

src/color.rs

@@ -1,4 +1,6 @@
-#[derive(Debug, Clone, Copy)]
+use serde::{Deserialize, Serialize};
+
+#[derive(Serialize, Deserialize, Debug, Clone, Copy, Default)]
 pub struct Color {
     red: f32,
     green: f32,

src/config.rs

@@ -1,6 +1,7 @@
 use crate::cmd::Cmd;
 use crate::widget;
 use crate::widgets;
+use crate::color::Color;
 use serde::{Deserialize, Serialize};
 use std::default::Default;
 use std::sync::mpsc::Sender;
@@ -149,6 +150,7 @@ pub struct Config {
     pub widget: Widget,
     pub output_mode: OutputMode,
     pub scale: u32,
+    pub background: Color,
 }
 
 impl Default for Config {
@@ -204,6 +206,7 @@ impl Default for Config {
             },
             output_mode: Default::default(),
             scale: 1,
+            background: Color::new(0.0, 0.0, 0.0, 0.9),
         }
     }
 }

src/main.rs

@@ -107,6 +107,9 @@ fn main() {
         config::OutputMode::Active => OutputMode::Active,
     };
 
+
+    let background = config.background;
+
     let (tx_draw, rx_draw) = channel();
     let tx_draw_mod = tx_draw.clone();
     let (mod_tx, mod_rx) = channel();
@@ -118,7 +121,7 @@ fn main() {
         }
     });
 
-    let mut app = App::new(tx_draw, output_mode, scale);
+    let mut app = App::new(tx_draw, output_mode, background, scale);
     let widget = mod_rx.recv().unwrap();
     app.set_widget(widget).unwrap();