change from startup into fullscreen to last saved geometry

settings/general-settings.el

@@ -14,7 +14,7 @@
         (add-to-list 'default-frame-alist item)
         )
       '(
-        (fullscreen . maximized)
+        ;;(fullscreen . maximized)  ;; restore saved geometry, see gui-settings.el my-frame-geometry-
         (tool-bar-position . left)
         ;;(horizontal-scroll-bars . t)  ;; see gui-settings
         )

settings/gui-settings.el

@@ -363,5 +363,42 @@ See also `dashboard-insert-section'."
   ;;:hook (help-mode . virtual-auto-fill-mode)
   )
 
+;; Custom functions/hooks for persisting/loading frame geometry upon save/load
+(setq my-frame-geometry-file (concat user-cache-directory "frame-geometry.el"))
+(defun my-frame-geometry-save ()
+  "Gets the current frame's geometry and saves to ~/.emacs.frameg."
+  (let ((frameg-font (frame-parameter (selected-frame) 'font))
+        (frameg-left (frame-parameter (selected-frame) 'left))
+        (frameg-top (frame-parameter (selected-frame) 'top))
+        (frameg-width (frame-parameter (selected-frame) 'width))
+        (frameg-height (frame-parameter (selected-frame) 'height))
+        (frameg-file my-frame-geometry-file))
+    (with-temp-buffer
+      ;; Turn off backup for this file
+      (make-local-variable 'make-backup-files)
+      (setq make-backup-files nil)
+      (insert
+       ";;; This file stores the previous emacs frame's geometry.\n"
+       ";;; Last generated " (current-time-string) ".\n"
+       "(setq initial-frame-alist\n"
+       ;; " '((font . \"" frameg-font "\")\n"
+       " '("
+       (format " (top . %d)\n" (max frameg-top 0))
+       (format " (left . %d)\n" (max frameg-left 0))
+       (format " (width . %d)\n" (max frameg-width 0))
+       (format " (height . %d)))\n" (max frameg-height 0)))
+      (when (file-writable-p frameg-file)
+        (write-file frameg-file)))))
+(defun my-frame-geometry-load ()
+  "Loads ~/.emacs.frameg which should load the previous frame's geometry."
+  (let ((frameg-file my-frame-geometry-file))
+    (when (file-readable-p frameg-file)
+      (load-file frameg-file))))
+;; Special work to do ONLY when there is a window system being used
+(if (display-graphic-p)
+    (progn
+      (add-hook 'after-init-hook 'my-frame-geometry-load)
+      (add-hook 'kill-emacs-hook 'my-frame-geometry-save)))
+
 (provide 'gui-settings)
 ;;; gui-settings.el ends here