feat(wm): add new cmd to set active border offset

This commit introduces a new command, active-window-border-offset, which
allows the user to offset the starting position of the active window
border, thereby allowing for thicker or thinner active window borders,
when used in conjunction with the active-window-border-width command.

resolve #232

komorebi/src/border.rs

@@ -18,6 +18,7 @@ use crate::window::Window;
 use crate::windows_callbacks;
 use crate::WindowsApi;
 use crate::BORDER_HWND;
+use crate::BORDER_OFFSET;
 use crate::BORDER_OVERFLOW_IDENTIFIERS;
 use crate::BORDER_RECT;
 use crate::TRANSPARENCY_COLOUR;
@@ -128,6 +129,14 @@ impl Border {
                 rect.bottom += invisible_borders.bottom;
             }
 
+            let border_offset = BORDER_OFFSET.lock();
+            if let Some(border_offset) = *border_offset {
+                rect.left -= border_offset.left;
+                rect.top -= border_offset.top;
+                rect.right += border_offset.right;
+                rect.bottom += border_offset.bottom;
+            }
+
             *BORDER_RECT.lock() = rect;
 
             WindowsApi::position_border_window(self.hwnd(), &rect, activate)

komorebi/src/main.rs

@@ -160,6 +160,9 @@ lazy_static! {
 
     static ref BORDER_RECT: Arc<Mutex<Rect>> =
         Arc::new(Mutex::new(Rect::default()));
+
+    static ref BORDER_OFFSET: Arc<Mutex<Option<Rect>>> =
+        Arc::new(Mutex::new(None));
 }
 
 pub static INITIAL_CONFIGURATION_LOADED: AtomicBool = AtomicBool::new(false);

komorebi/src/process_command.rs

@@ -47,6 +47,7 @@ use crate::BORDER_COLOUR_SINGLE;
 use crate::BORDER_COLOUR_STACK;
 use crate::BORDER_ENABLED;
 use crate::BORDER_HWND;
+use crate::BORDER_OFFSET;
 use crate::BORDER_OVERFLOW_IDENTIFIERS;
 use crate::BORDER_WIDTH;
 use crate::CUSTOM_FFM;
@@ -889,6 +890,20 @@ impl WindowManager {
                 BORDER_WIDTH.store(width, Ordering::SeqCst);
                 WindowsApi::invalidate_border_rect()?;
             }
+            SocketMessage::ActiveWindowBorderOffset(offset) => {
+                let mut current_border_offset = BORDER_OFFSET.lock();
+
+                let new_border_offset = Rect {
+                    left: offset,
+                    top: offset,
+                    right: offset * 2,
+                    bottom: offset * 2,
+                };
+
+                *current_border_offset = Option::from(new_border_offset);
+
+                WindowsApi::invalidate_border_rect()?;
+            }
             SocketMessage::NotificationSchema => {
                 let notification = schema_for!(Notification);
                 let schema = serde_json::to_string_pretty(&notification)?;
@@ -927,6 +942,9 @@ impl WindowManager {
             | SocketMessage::Promote
             | SocketMessage::PromoteFocus
             | SocketMessage::Retile
+            // Adding this one so that changes can be seen instantly after
+            // modifying the active window border offset
+            | SocketMessage::ActiveWindowBorderOffset(_)
             // Adding this one because sometimes EVENT_SYSTEM_FOREGROUND isn't
             // getting sent on FocusWindow, meaning the border won't be set
             // when processing events