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-rw-r--r--users/tazjin/emacs/config/desktop.el39
1 files changed, 37 insertions, 2 deletions
diff --git a/users/tazjin/emacs/config/desktop.el b/users/tazjin/emacs/config/desktop.el
index 4c64e7e70d50..28f0b5908877 100644
--- a/users/tazjin/emacs/config/desktop.el
+++ b/users/tazjin/emacs/config/desktop.el
@@ -4,7 +4,6 @@
 ;; window-management (EXWM) as well as additional system-wide
 ;; commands.
 
-(require 'dash)
 (require 'exwm)
 (require 'exwm-config)
 (require 'exwm-randr)
@@ -13,6 +12,7 @@
 (require 'f)
 (require 'ring)
 (require 's)
+(require 'seq)
 
 (defcustom tazjin--screen-lock-command "tazjin-screen-lock"
   "Command to execute for locking the screen."
@@ -109,6 +109,7 @@
 
 (fringe-mode 3)
 (exwm-enable)
+(exwm-randr-enable)
 
 ;; Create 10 EXWM workspaces
 (setq exwm-workspace-number 10)
@@ -251,7 +252,41 @@ ring."
 ;; enable display of X11 system tray within Emacs
 (exwm-systemtray-enable)
 
-;; Configure xrandr (multi-monitor setup).
+;; Multi-monitor configuration.
+;;
+;; With tab-bar-mode, each monitor only displays at most one
+;; workspace. Workspaces are only created, never deleted, meaning that
+;; the number of workspaces will be equivalent to the maximum number
+;; of displays that were connected during a session.
+;;
+;; The first workspace is special: It is kept on the primary monitor.
+
+(defun exwm-assign-workspaces ()
+  "Assigns workspaces to the currently existing monitors, putting
+the first one on the primary display and allocating the others
+dynamically if needed in no particular order."
+  (interactive)
+  (let* ((randr-monitors (exwm-randr--get-monitors))
+         (primary (car randr-monitors))
+         (all-monitors (seq-map #'car (cadr randr-monitors)))
+         (sorted-primary-first (seq-sort (lambda (a b)
+                                           (or (equal a primary)
+                                               (< a b)))
+                                         all-monitors))
+         ;; assign workspace numbers to each monitor ...
+         (workspace-assignments
+          (flatten-list (seq-map-indexed (lambda (monitor idx)
+                                           (list idx monitor))
+                                         sorted-primary-first))))
+    ;; ensure that the required workspaces exist
+    (exwm-workspace-switch-create (- (seq-length all-monitors) 1))
+
+    ;; update randr config
+    (setq exwm-randr-workspace-monitor-plist workspace-assignments)
+    (exwm-randr-refresh)
+
+    ;; leave focus on primary workspace
+    (exwm-workspace-switch 0)))
 
 (defun set-randr-config (screens)
   (setq exwm-randr-workspace-monitor-plist