feat(wm): make active border with configurable

This commit introduces a new command which lets the user set a custom
width value for the active window border when it is enabled.

Unfortunately a little more width is required when working with rounded
windows on Windows 11 to fill the gap left by the rounding. The default
width remains set at 20.

re #232

komorebi/src/border.rs

@@ -103,6 +103,10 @@ impl Border {
         if self.hwnd == 0 {
             Ok(())
         } else {
+            if !WindowsApi::is_window(self.hwnd()) {
+                Self::create("komorebi-border-window")?;
+            }
+
             let mut should_expand_border = false;
 
             let mut rect = WindowsApi::window_rect(window.hwnd())?;

komorebi/src/main.rs

@@ -8,6 +8,7 @@ use std::net::TcpStream;
 use std::path::PathBuf;
 use std::process::Command;
 use std::sync::atomic::AtomicBool;
+use std::sync::atomic::AtomicI32;
 use std::sync::atomic::AtomicIsize;
 use std::sync::atomic::AtomicU32;
 use std::sync::atomic::Ordering;
@@ -170,6 +171,7 @@ pub static BORDER_HIDDEN: AtomicBool = AtomicBool::new(false);
 pub static BORDER_COLOUR_SINGLE: AtomicU32 = AtomicU32::new(0);
 pub static BORDER_COLOUR_STACK: AtomicU32 = AtomicU32::new(0);
 pub static BORDER_COLOUR_CURRENT: AtomicU32 = AtomicU32::new(0);
+pub static BORDER_WIDTH: AtomicI32 = AtomicI32::new(20);
 // 0 0 0 aka pure black, I doubt anyone will want this as a border colour
 pub const TRANSPARENCY_COLOUR: u32 = 0;
 

komorebi/src/process_command.rs

@@ -48,6 +48,7 @@ use crate::BORDER_COLOUR_STACK;
 use crate::BORDER_ENABLED;
 use crate::BORDER_HWND;
 use crate::BORDER_OVERFLOW_IDENTIFIERS;
+use crate::BORDER_WIDTH;
 use crate::CUSTOM_FFM;
 use crate::DATA_DIR;
 use crate::FLOAT_IDENTIFIERS;
@@ -881,6 +882,10 @@ impl WindowManager {
 
                 WindowsApi::invalidate_border_rect()?;
             }
+            SocketMessage::ActiveWindowBorderWidth(width) => {
+                BORDER_WIDTH.store(width, Ordering::SeqCst);
+                WindowsApi::invalidate_border_rect()?;
+            }
             SocketMessage::NotificationSchema => {
                 let notification = schema_for!(Notification);
                 let schema = serde_json::to_string_pretty(&notification)?;

komorebi/src/windows_callbacks.rs

@@ -39,6 +39,7 @@ use crate::windows_api::WindowsApi;
 use crate::winevent_listener::WINEVENT_CALLBACK_CHANNEL;
 use crate::BORDER_COLOUR_CURRENT;
 use crate::BORDER_RECT;
+use crate::BORDER_WIDTH;
 use crate::MONITOR_INDEX_PREFERENCES;
 use crate::TRANSPARENCY_COLOUR;
 
@@ -164,7 +165,7 @@ pub extern "system" fn border_window(
                 let hdc = BeginPaint(window, &mut ps);
                 let hpen = CreatePen(
                     PS_SOLID,
-                    20,
+                    BORDER_WIDTH.load(Ordering::SeqCst),
                     COLORREF(BORDER_COLOUR_CURRENT.load(Ordering::SeqCst)),
                 );
                 let hbrush = WindowsApi::create_solid_brush(TRANSPARENCY_COLOUR);