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LICENSE

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+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
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+
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+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

README.md

@@ -1,43 +0,0 @@
-[![MELPA](http://melpa.org/packages/focus-badge.svg)](http://melpa.org/#/focus)
-# Focus
-
-Focus provides `focus-mode` that dims the text of surrounding sections, similar to [iA Writer's](https://ia.net/writer) Focus Mode.
-
-## Installation
-
-You can install Focus using elpa. It's available on [melpa](http://melpa.milkbox.net/):
-
-<kbd> M-x package-install focus </kbd>
-
-The package has only been tried on Emacs 24.4 and 24.5, but should work on Emacs 24 or higher.
-
-## Usage
-
-Enable the `focus-mode` with <kbd> M-x focus-mode </kbd>.
-
-Also, `focus-read-only-mode` is provided, which is a mode optimized for continuous reading. It inhibits change in the buffer, hides the cursor and provides bindings for moving between *things* (defined in [Thing At Point](http://emacswiki.org/emacs/ThingAtPoint)). One can toggle `focus-read-only-mode` with <kbd> M-x focus-read-only-mode </kbd> or <kbd> C-c C-q </kbd> if `focus-mode` is enabled.
-
-Some bindings for simple navigation and exiting `focus-read-only-mode` are provided.
-
-Keybinding         | Description
--------------------|----------------------------
-<kbd> n </kbd>     | Jump to next *thing*
-<kbd> SPC </kbd>   | Jump to next *thing*
-<kbd> p </kbd>     | Jump to previous *thing*
-<kbd> S-SPC </kbd> | Jump to previous *thing*
-<kbd> i </kbd>     | Exit `focus-read-only-mode`
-<kbd> q </kbd>     | Exit `focus-read-only-mode`
-
-## Configuring
-
-The amount of dimness can be customized by setting the `focus-dimness` variable, where a positive integer indicates a more dim color (i.e. more blended with the background color of your theme), and a negative integer indicates a less dim color.
-
-Focus uses the [Thing At Point](http://emacswiki.org/emacs/ThingAtPoint) library to choose what section should be in focus. By default, modes derived from `prog-mode` uses `defun`, and modes derived from `text-mode` uses `sentence`. This a customizable by setting the `focus-mode-to-thing` variable, which is a list containing pairs on the form `(mode . thing)`.
-
-### Example
-
-This is what it looks like:
-
-Light Theme (leuven)                     |  Dark Theme (monokai)
-:---------------------------------------:|:---------------------------------------:
-<img src="./demo-light.gif" width="333"> | <img src="./demo-dark.gif" width="333">

README.org

@@ -0,0 +1,87 @@
+[[https://melpa.org/#/focus][file:https://melpa.org/packages/focus-badge.svg]]
+[[https://stable.melpa.org/#/focus][file:https://stable.melpa.org/packages/focus-badge.svg]]
+
+* Focus
+
+  [[./focus-demo.gif]]
+
+  This is Focus, a package that dims surrounding text. It works with any theme
+  and can be configured to focus in on different regions like sentences,
+  paragraphs or code-blocks.
+
+* Installation
+
+  It's available on [[https://melpa.org/#/focus][MELPA]] and [[https://stable.melpa.org/#/focus][MELPA Stable]]:
+
+  #+BEGIN_EXAMPLE
+  M-x package-install focus
+  #+END_EXAMPLE
+
+* Usage
+
+  Enable ~focus-mode~ with ~M-x focus-mode~.
+
+  A few interactive functions are provided:
+
+  | Function             | Description                                                              |
+  |----------------------+--------------------------------------------------------------------------|
+  | ~focus-change-thing~ | Adjust the narrowness of the focused section for the current buffer      |
+  | ~focus-pin~          | Pin the focused section to its current location or the region, if active |
+  | ~focus-unpin~        | Unpin the focused section                                                |
+  | ~focus-next-thing~   | Move the point to the middle of the Nth next thing                       |
+  | ~focus-prev-thing~   | Move the point to the middle of the Nth previous thing                   |
+
+  Focus relies on [[https://www.emacswiki.org/emacs/ThingAtPoint][Thing At Point]], which can retrieve a /thing/ surrounding the
+  point. These /things/ may be a symbol, list, S-expression (sexp), function
+  definition (defun), sentence, line, page and others. Calling ~M-x
+  focus-change-thing~ allows you to interactively change the kind of region
+  which should be in focus.
+
+** Focus read-only mode
+
+   Enable ~focus-read-only-mode~ with ~M-x focus-read-only-mode~. It inhibits
+   changes in a buffer, hides the cursor and provides bindings for moving
+   between /things/.
+
+   Some bindings for simple navigation and exiting `focus-read-only-mode` are
+   provided.
+
+   | Keybinding | Description                 |
+   |------------+-----------------------------|
+   | ~n~        | Jump to next /thing/        |
+   | ~SPC~      | Jump to next /thing/        |
+   | ~p~        | Jump to previous /thing/    |
+   | ~S-SPC~    | Jump to previous /thing/    |
+   | ~i~        | Exit ~focus-read-only-mode~ |
+   | ~q~        | Exit ~focus-read-only-mode~ |
+
+* Customization
+
+   The choice of what /thing/ is suitable for a mode may be configured by
+   setting the variable ~focus-mode-to-thing~. The default is
+
+   #+BEGIN_EXAMPLE
+   '((prog-mode . defun) (text-mode . sentence))
+   #+END_EXAMPLE
+
+   For modes inheriting ~prog-mode~ (which are most programming modes), the
+   default is the function-body, and for modes inheriting ~text-mode~, the
+   default is a sentence.
+
+   For instance, adding the following to your ~.emacs~-file:
+
+   #+BEGIN_SRC emacs-lisp
+   (add-to-list 'focus-mode-to-thing '(python-mode . paragraph))
+   #+END_SRC
+
+   changes ~python-mode~ to focus in on code-blocks with no blank lines rather
+   than the entire function.
+
+   According to [[https://www.reddit.com/r/emacs/comments/b1vrar/lsp_support_for_focusel_using_lspmode/][this reddit post]], Focus plays nice with ~lsp-mode~.
+
+** Faces
+
+   Focus offers two faces, one for the focused- and unfocused area. By default,
+   the ~focus-focused~ is the empty face, meaning there is no change, and
+ ~focus-unfocused~ inherits the comment face (which is usually subtle). The
+   faces can easily be customized via ~M-x list-faces-display~.

focus.el

@@ -5,8 +5,8 @@
 ;; Author: Lars Tveito <larstvei@ifi.uio.no>
 ;; URL: http://github.com/larstvei/Focus
 ;; Created: 11th May 2015
-;; Version: 0.1.1
-;; Package-Requires: ((emacs "24") (cl-lib "0.5"))
+;; Version: 1.0.1
+;; Package-Requires: ((emacs "24.3") (cl-lib "0.5"))
 
 ;; This program is free software; you can redistribute it and/or modify
 ;; it under the terms of the GNU General Public License as published by
@@ -33,141 +33,173 @@
 (require 'cl-lib)
 (require 'thingatpt)
 
+(declare-function org-element-property "org-element" (property element))
+(declare-function org-element-at-point "org-element" (&optional pom cached-only))
+
 (defgroup focus ()
   "Dim the font color of text in surrounding sections."
   :group 'font-lock
   :prefix "focus-")
 
-(defcustom focus-dimness 0
-  "Amount of dimness in out of focus sections is determined by this integer.
-
-A positive value increases the dimness of the sections.
-A negative value decreases the dimness.
-
-The default is 0 which means a 50/50 mixture of the background
-and foreground color."
-  :type '(integer)
-  :group 'focus)
-
-(defcustom focus-mode-to-thing '((prog-mode . defun) (text-mode . sentence))
+(defcustom focus-mode-to-thing '((prog-mode . defun)
+                                 (text-mode . paragraph)
+                                 (org-mode . org-element))
   "An associated list between mode and thing.
 
 A thing is defined in thingatpt.el; the thing determines the
 narrowness of the focused section.
 
-Note that the order of the list matters. The first mode that the
+Note that the order of the list matters.  The first mode that the
 current mode is derived from is used, so more modes that have
 many derivatives should be placed by the end of the list.
 
 Things that are defined include `symbol', `list', `sexp',
 `defun', `filename', `url', `email', `word', `sentence',
-`whitespace', `line', and `page'."
-  :type '(repeat symbol)
+`whitespace', `line', and `page'.
+
+In order for changes to take effect, reenable `focus-mode'."
+  :type '(alist :key-type symbol :valye-type symbol)
   :group 'focus)
 
 (defcustom focus-read-only-blink-seconds 1
   "The duration of a cursor blink in `focus-read-only-mode'."
-  :type '(float)
+  :type 'number
   :group 'focus)
 
-(defvar focus-current-thing nil
+(defcustom focus-update-idle-delay nil
+  "Delay (in seconds) before updating the focus after each command.
+The default value of nil results in an immediate update.
+Increase this value if you experience performance issues."
+  :type '(choice (const  :tag "Immediate update" nil)
+                 (const  :tag "Delayed update (0.1s)" 0.1)
+                 (number :tag "Custom delay"))
+  :group 'focus)
+
+(defface focus-unfocused
+  '((t :inherit shadow))
+  "The face that overlays the unfocused area."
+  :group 'focus)
+
+(defface focus-focused nil
+  "The face that overlays the focused area."
+  :group 'focus)
+
+(defvar focus-cursor-type cursor-type
+  "Used to restore the users `cursor-type'.")
+
+(defvar-local focus-current-thing nil
   "Overrides the choice of thing dictated by `focus-mode-to-thing' if set.")
 
-(defvar focus-pre-overlay nil
+(defvar-local focus-current-thing-cache nil
+  "Caches the current thing to focus.")
+
+(defvar-local focus-buffer nil
+  "Local reference to the buffer focus functions operate on.")
+
+(defvar-local focus-pre-overlay nil
   "The overlay that dims the text prior to the current-point.")
 
-(defvar focus-post-overlay nil
+(defvar-local focus-mid-overlay nil
+  "The overlay that surrounds the text of the current-point.")
+
+(defvar-local focus-post-overlay nil
   "The overlay that dims the text past the current-point.")
 
-(defvar focus-read-only-blink-timer nil
+(defvar-local focus-read-only-blink-timer nil
   "Timer started from `focus-read-only-cursor-blink'.
 The timer calls `focus-read-only-hide-cursor' after
 `focus-read-only-blink-seconds' seconds.")
 
-;; Use make-local-variable for backwards compatibility.
-(dolist (var '(focus-current-thing
-               focus-pre-overlay
-               focus-post-overlay
-               focus-read-only-blink-timer))
-  (make-local-variable var))
-
-(defun focus-any (f lst)
-  "Apply F to each element of LST and return first NON-NIL."
-  (when lst
-    (let ((v (funcall f (car lst))))
-      (if v v (focus-any f (cdr lst))))))
+(defvar-local focus-update-timer nil
+  "Timer started from `focus-update'")
 
 (defun focus-get-thing ()
-  "Return the current thing, based on `focus-mode-to-thing'."
+  "Return the current thing, based on `focus-mode-to-thing'.
+
+This also sets `focus-current-thing-cache' to the current thing."
   (or focus-current-thing
-   (let* ((modes (mapcar 'car focus-mode-to-thing))
-          (mode  (focus-any 'derived-mode-p modes)))
-     (if mode (cdr (assoc mode focus-mode-to-thing)) 'sentence))))
+      focus-current-thing-cache
+      (setq focus-current-thing-cache
+            (let* ((modes (mapcar 'car focus-mode-to-thing))
+                   (mode  (or (cl-find major-mode modes)
+                              (apply #'derived-mode-p modes))))
+              (if mode (cdr (assoc mode focus-mode-to-thing)) 'sentence)))))
 
 (defun focus-bounds ()
   "Return the current bounds, based on `focus-get-thing'."
-  (bounds-of-thing-at-point (focus-get-thing)))
+  (let ((thing (focus-get-thing)))
+    (cond ((eq thing 'org-element)
+           (let* ((elem (org-element-at-point))
+                  (beg (org-element-property :begin elem))
+                  (end (org-element-property :end elem)))
+             (cons beg end)))
+          (t (bounds-of-thing-at-point thing)))))
 
-(defun focus-average-colors (color &rest colors)
-  "Takes an average of the colors given by argument.
-Argument COLOR is a color name, and so are the COLORS; COLOR is
-there to ensure that the the function receives at least one
-argument."
-  (let* ((colors (cons color colors))
-         (colors (mapcar 'color-name-to-rgb colors))
-         (len    (length colors))
-         (sums   (apply 'cl-mapcar '+ colors))
-         (avg    (mapcar (lambda (v) (/ v len)) sums)))
-    (apply 'color-rgb-to-hex avg)))
-
-(defun focus-make-dim-color ()
-  "Return a dimmed color relative to the current theme."
-  (let ((background (face-attribute 'default :background))
-        (foreground (face-attribute 'default :foreground))
-        (backgrounds (if (> focus-dimness 0)    focus-dimness  1))
-        (foregrounds (if (< focus-dimness 0) (- focus-dimness) 1)))
-    (apply 'focus-average-colors
-           (append (make-list backgrounds background)
-                   (make-list foregrounds foreground)))))
-
-(defun focus-move-focus ()
-  "Moves the focused section according to `focus-bounds'.
+(defun focus-move-focus (buffer)
+  "Move the focused section according to `focus-bounds'.
 
 If `focus-mode' is enabled, this command fires after each
 command."
-  (let* ((bounds (focus-bounds)))
-    (when bounds
-      (focus-move-overlays (car bounds) (cdr bounds)))))
+  (with-current-buffer buffer
+    (setq focus-update-timer nil)
+    (let* ((bounds (focus-bounds)))
+      (when bounds
+        (focus-move-overlays (car bounds) (cdr bounds))))))
+
+(defun focus-update ()
+  "Trigger an update of the focus.
+
+When `focus-update-idle-delay' is non-nil, start update after the
+specified idle delay."
+  (if focus-update-idle-delay
+      (unless focus-update-timer
+        (setq focus-update-timer
+              (run-with-idle-timer focus-update-idle-delay nil
+                                   #'focus-move-focus focus-buffer)))
+    (focus-move-focus focus-buffer)))
 
 (defun focus-move-overlays (low high)
-  "Move `focus-pre-overlay' and `focus-post-overlay'."
-  (move-overlay focus-pre-overlay  (point-min) low)
+  "Move the overlays to highlight the region between LOW and HIGH."
+  (move-overlay focus-pre-overlay (point-min) low)
+  (move-overlay focus-mid-overlay low high)
   (move-overlay focus-post-overlay high (point-max)))
 
 (defun focus-init ()
   "This function is run when command `focus-mode' is enabled.
 
-It sets the `focus-pre-overlay' and `focus-post-overlay' to
-overlays; these are invisible until `focus-move-focus' is run. It
-adds `focus-move-focus' to `post-command-hook'."
+It sets the `focus-pre-overlay', `focus-min-overlay', and
+`focus-post-overlay' to overlays; these are invisible until
+`focus-update' is run.  It adds `focus-update' to
+`post-command-hook'."
   (unless (or focus-pre-overlay focus-post-overlay)
     (setq focus-pre-overlay  (make-overlay (point-min) (point-min))
-          focus-post-overlay (make-overlay (point-max) (point-max)))
-    (let ((color (focus-make-dim-color)))
-      (mapc (lambda (o) (overlay-put o 'face (cons 'foreground-color color)))
-            (list focus-pre-overlay focus-post-overlay)))
-    (add-hook 'post-command-hook 'focus-move-focus nil t)
-    (add-hook 'change-major-mode-hook 'focus-terminate)))
+          focus-mid-overlay  (make-overlay (point-min) (point-max))
+          focus-post-overlay (make-overlay (point-max) (point-max))
+          focus-buffer (current-buffer))
+    (overlay-put focus-mid-overlay 'face 'focus-focused)
+    (mapc (lambda (o) (overlay-put o 'face 'focus-unfocused))
+          (list focus-pre-overlay focus-post-overlay))
+    (setq focus-current-thing-cache nil
+          focus-update-timer nil)
+    (add-hook 'post-command-hook 'focus-update nil t)
+    (add-hook 'change-major-mode-hook 'focus-terminate nil t)))
 
 (defun focus-terminate ()
   "This function is run when command `focus-mode' is disabled.
 
-The overlays pointed to by `focus-pre-overlay' and `focus-post-overlay' are
-deleted, and `focus-move-focus' is removed from `post-command-hook'."
+The overlays pointed to by `focus-pre-overlay',
+`focus-mid-overlay' and `focus-post-overlay' are deleted, and
+`focus-update' is removed from `post-command-hook'."
   (when (and focus-pre-overlay focus-post-overlay)
-    (mapc 'delete-overlay (list focus-pre-overlay focus-post-overlay))
-    (remove-hook 'post-command-hook 'focus-move-focus t)
-    (setq focus-pre-overlay  nil
+    (mapc 'delete-overlay
+          (list focus-pre-overlay focus-mid-overlay focus-post-overlay))
+    (remove-hook 'post-command-hook 'focus-update t)
+    (when focus-update-timer
+      (cancel-timer focus-update-timer))
+    (setq focus-current-thing-cache nil
+          focus-update-timer nil
+          focus-pre-overlay nil
+          focus-mid-overlay nil
           focus-post-overlay nil)))
 
 (defun focus-goto-thing (bounds)
@@ -180,33 +212,33 @@ deleted, and `focus-move-focus' is removed from `post-command-hook'."
   "Adjust the narrowness of the focused section for the current buffer.
 
 The variable `focus-mode-to-thing' dictates the default thing
-according to major-mode. If `focus-current-thing' is set, this
-default is overwritten. This function simply helps set the
+according to major-mode.  If `focus-current-thing' is set, this
+default is overwritten.  This function simply helps set the
 `focus-current-thing'."
   (interactive)
-  (let* ((candidates '(symbol list sexp defun
-                      filename url email word
-                      sentence whitespace line page))
+  (let* ((candidates '(defun line list org-element paragraph sentence sexp symbol word))
          (thing (completing-read "Thing: " candidates)))
     (setq focus-current-thing (intern thing))))
 
 (defun focus-pin ()
-  "Pin the focused section to its current location or the region,
-if active."
+  "Pin the focused section to its current location or the region, if active."
   (interactive)
-  (when focus-mode
+  (when (bound-and-true-p focus-mode)
     (when (region-active-p)
       (focus-move-overlays (region-beginning) (region-end)))
-   (remove-hook 'post-command-hook 'focus-move-focus t)))
+    (when focus-update-timer
+      (cancel-timer focus-update-timer))
+    (setq focus-update-timer nil)
+    (remove-hook 'post-command-hook 'focus-update t)))
 
 (defun focus-unpin ()
   "Unpin the focused section."
   (interactive)
-  (when focus-mode
-    (add-hook 'post-command-hook 'focus-move-focus nil t)))
+  (when (bound-and-true-p focus-mode)
+    (add-hook 'post-command-hook 'focus-update nil t)))
 
 (defun focus-next-thing (&optional n)
-  "Moves the point to the middle of the Nth next thing."
+  "Move the point to the middle of the Nth next thing."
   (interactive "p")
   (let ((current-bounds (focus-bounds))
         (thing (focus-get-thing)))
@@ -216,16 +248,17 @@ if active."
     (focus-goto-thing (focus-bounds))))
 
 (defun focus-prev-thing (&optional n)
-  "Moves the point to the middle of the Nth previous thing."
+  "Move the point to the middle of the Nth previous thing."
   (interactive "p")
   (focus-next-thing (- n)))
 
-(defun focus-read-only-hide-cursor (&optional buffer)
+(defun focus-read-only-hide-cursor ()
   "Hide the cursor.
 This function is triggered by the `focus-read-only-blink-timer',
 when `focus-read-only-mode' is activated."
-  (with-current-buffer (or buffer (current-buffer))
-    (when (and focus-read-only-mode (not (null focus-read-only-blink-timer)))
+  (with-current-buffer focus-buffer
+    (when (and (bound-and-true-p focus-read-only-mode)
+               (not (null focus-read-only-blink-timer)))
       (setq focus-read-only-blink-timer nil)
       (setq cursor-type nil))))
 
@@ -233,37 +266,39 @@ when `focus-read-only-mode' is activated."
   "Make the cursor visible for `focus-read-only-blink-seconds'.
 This is added to the `pre-command-hook' when
 `focus-read-only-mode' is active."
-  (when (and focus-read-only-mode
-             (not (member last-command '(focus-next-thing focus-prev-thing))))
-    (when focus-read-only-blink-timer (cancel-timer focus-read-only-blink-timer))
-    (setq cursor-type t)
-    (setq focus-read-only-blink-timer
-          (run-at-time focus-read-only-blink-seconds nil
-                       'focus-read-only-hide-cursor (current-buffer)))))
+  (with-current-buffer focus-buffer
+    (when (and (bound-and-true-p focus-read-only-mode)
+               (not (member last-command '(focus-next-thing focus-prev-thing))))
+      (when focus-read-only-blink-timer (cancel-timer focus-read-only-blink-timer))
+      (setq cursor-type focus-cursor-type)
+      (setq focus-read-only-blink-timer
+            (run-at-time focus-read-only-blink-seconds nil
+                         'focus-read-only-hide-cursor)))))
 
 (defun focus-read-only-init ()
   "Run when `focus-read-only-mode' is activated.
 Enables `read-only-mode', hides the cursor and adds
-`focus-read-only-cursor-blink' to `pre-command-hook'. Also
-`focus-read-only-terminate' is added to the `kill-buffer-hook'."
+`focus-read-only-cursor-blink' to `pre-command-hook'.
+Also `focus-read-only-terminate' is added to the `kill-buffer-hook'."
   (read-only-mode 1)
-  (setq cursor-type nil)
+  (setq cursor-type nil
+        focus-buffer (current-buffer))
   (add-hook 'pre-command-hook 'focus-read-only-cursor-blink nil t)
-  (add-hook 'kill-buffer-hook 'focus-read-only-terminate t))
+  (add-hook 'kill-buffer-hook 'focus-read-only-terminate nil t))
 
 (defun focus-read-only-terminate ()
   "Run when `focus-read-only-mode' is deactivated.
-Disables `read-only-mode' and shows the cursor again. It cleans
-up the `focus-read-only-blink-timer' and hooks."
+Disables `read-only-mode' and shows the cursor again.
+It cleans up the `focus-read-only-blink-timer' and hooks."
   (read-only-mode -1)
-  (setq cursor-type t)
+  (setq cursor-type focus-cursor-type)
   (when focus-read-only-blink-timer
     (cancel-timer focus-read-only-blink-timer))
   (setq focus-read-only-blink-timer nil)
   (remove-hook 'pre-command-hook 'focus-read-only-cursor-blink t)
   (remove-hook 'kill-buffer-hook 'focus-read-only-terminate t))
 
-(defun turn-off-focus-read-only-mode ()
+(defun focus-turn-off-focus-read-only-mode ()
   "Turn off `focus-read-only-mode'."
   (interactive)
   (focus-read-only-mode -1))
@@ -275,10 +310,6 @@ up the `focus-read-only-blink-timer' and hooks."
   :keymap (let ((map (make-sparse-keymap)))
             (define-key map (kbd "C-c C-q") 'focus-read-only-mode)
             map)
-  (unless (and (color-defined-p (face-attribute 'default :background))
-               (color-defined-p (face-attribute 'default :foreground)))
-    (message "Can't enable focus mode when no theme is loaded.")
-    (setq focus-mode nil))
   (if focus-mode (focus-init) (focus-terminate)))
 
 ;;;###autoload
@@ -290,9 +321,11 @@ up the `focus-read-only-blink-timer' and hooks."
             (define-key map (kbd "SPC") 'focus-next-thing)
             (define-key map (kbd "p") 'focus-prev-thing)
             (define-key map (kbd "S-SPC") 'focus-prev-thing)
-            (define-key map (kbd "i") 'turn-off-focus-read-only-mode)
-            (define-key map (kbd "q") 'turn-off-focus-read-only-mode)
+            (define-key map (kbd "i") 'focus-turn-off-focus-read-only-mode)
+            (define-key map (kbd "q") 'focus-turn-off-focus-read-only-mode)
             map)
+  (when cursor-type
+    (setq focus-cursor-type cursor-type))
   (if focus-read-only-mode (focus-read-only-init) (focus-read-only-terminate)))
 
 (provide 'focus)