make it paragraph-aware

[spray] / spray.el

diff --git a/spray.el b/spray.el
index a34b58fe299e988e10c2e791c9e32b5e50d89740..43b46b6ed6d339d1c295abe87bfc076cb03c5905 100644 (file)
--- a/spray.el
+++ b/spray.el
@@ -1,18 +1,23 @@
 ;; custom
-(defvar spray-freq (/ 60.0 300) "60.0 / WPM")
-(defvar spray-text-scale 5)
-(defvar spray-orp-face 'error)
+(defvar spray-wpm 400 "words/min")
+(defvar spray-height 400 "height of characters")
 
-;; internal variables for spraying
-(defvar spray--padding-overlay nil)
+(make-face 'spray-base-face)
+(set-face-attribute 'spray-base-face nil
+                    :background (face-background 'default)
+                    :foreground (face-foreground 'default))
+
+(make-face 'spray-orp-face)
+(set-face-attribute 'spray-orp-face nil
+                    :foreground "red"
+                    :overline (face-foreground 'default)
+                    :underline (face-foreground 'default))
+
+;; internal variables
+(defvar spray--base-overlay nil)
 (defvar spray--orp-overlay nil)
 (defvar spray--timer nil)
 (defvar spray--delay 0)
-
-;; incompatible minor-modes
-(defvar spray--saved-global-hl-line-mode nil)
-(defvar spray--saved-font-lock-mode nil)
-(defvar spray--saved-hl-line-mode nil)
 (defvar spray--saved-cursor-type nil)
 
 (define-minor-mode spray-mode
@@ -20,67 +25,59 @@
   :init nil
   :global nil
   (cond (spray-mode
-         (setq spray--orp-overlay (make-overlay 0 0)
-               spray--padding-overlay (make-overlay 0 0)
-               spray--timer (run-with-timer 0 spray-freq 'spray-next)
+         (let ((buffer-face-mode-face `(:height ,spray-height)))
+           (buffer-face-mode 1))
+         (setq spray--base-overlay (make-overlay (point-min) (point-max))
+               spray--orp-overlay (make-overlay 0 0)
+               spray--timer (run-with-timer 0 (/ 60.0 spray-wpm) 'spray-next)
                spray--saved-cursor-type cursor-type)
          (setq cursor-type nil)
-         (text-scale-set spray-text-scale)
-         (overlay-put spray--orp-overlay 'face spray-orp-face)
-         (add-hook 'pre-command-hook 'turn-off-spray-mode)
-         ;; disable incompatible minor-modes
-         (when (boundp 'global-hl-line-mode)
-           (setq spray--saved-global-hl-line-mode global-hl-line-mode)
-           (set (make-local-variable 'global-hl-line-mode) nil))
-         (when (boundp 'font-lock-mode)
-           (setq spray--saved-font-lock-mode font-lock-mode)
-           (font-lock-mode -1))
-         (when (boundp 'hl-line-mode)
-           (setq spray--saved-hl-line-mode hl-line-mode)
-           (hl-line-mode -1)))
+         (overlay-put spray--base-overlay 'priority 100)
+         (overlay-put spray--base-overlay 'face 'spray-base-face)
+         (overlay-put spray--orp-overlay 'priority 101)
+         (overlay-put spray--orp-overlay 'face 'spray-orp-face)
+         (add-hook 'pre-command-hook 'turn-off-spray-mode))
         (t
+         (buffer-face-mode -1)
          (widen)
          (setq cursor-type spray--saved-cursor-type)
-         (text-scale-set 0)
+         (delete-overlay spray--base-overlay)
          (delete-overlay spray--orp-overlay)
-         (delete-overlay spray--padding-overlay)
          (cancel-timer spray--timer)
-         (remove-hook 'pre-command-hook 'turn-off-spray-mode)
-         ;; restore incompatible minor-modes
-         (when spray--saved-global-hl-line-mode
-           (setq global-hl-line-mode spray--saved-global-hl-line-mode))
-         (when spray--saved-font-lock-mode
-           (font-lock-mode 1))
-         (when spray--saved-hl-line-mode
-           (hl-line-mode 1)))))
+         (remove-hook 'pre-command-hook 'turn-off-spray-mode))))
 
 (defun turn-on-spray-mode () (interactive) (spray-mode 1))
 (defun turn-off-spray-mode () (interactive) (spray-mode -1))
 
 (defun spray-next ()
-  (if (not (zerop spray--delay))
-      (setq spray--delay (1- spray--delay))
-    (widen)
-    (if (eobp)
-        (turn-off-spray-mode)
-      (skip-chars-forward "\s\t\n")
-      (let* ((beg (point))
-             (len (skip-chars-forward "^\s\t\n"))
-             (end (point))
-             (orp (+ beg (cl-case len
-                           ((1) 1)
-                           ((2 3 4 5) 2)
-                           ((6 7 8 9) 3)
-                           ((10 11 12 13) 4)
-                           (t 5)))))
-        (setq spray--delay (+ (if (> len 8) 1 0) (cl-case (char-before)
-                                                   ((?. ?! ?\? ?\;) 3)
-                                                   ((?, ?:) 1)
-                                                   (t 0))))
-        (overlay-put spray--padding-overlay
-                     'before-string (make-string (- 5 (- orp beg)) ?\s))
-        (move-overlay spray--padding-overlay beg (1+ beg))
-        (move-overlay spray--orp-overlay (1- orp) orp)
-        (narrow-to-region beg end)))))
+  (cond ((not (zerop spray--delay))
+         (setq spray--delay (1- spray--delay))
+         (when (= spray--delay 2)
+           (narrow-to-region (point) (point))))
+        (t
+         (widen)
+         (if (eobp)
+             (turn-off-spray-mode)
+           (skip-chars-forward "\s\t\n")
+           (let* ((beg (point))
+                  (len (skip-chars-forward "^\s\t\n"))
+                  (end (point))
+                  (orp (+ beg (cl-case len
+                                ((1) 1)
+                                ((2 3 4 5) 2)
+                                ((6 7 8 9) 3)
+                                ((10 11 12 13) 4)
+                                (t 5)))))
+             (setq spray--delay (+ (if (> len 9) 1 0)
+                                   (if (eql (char-after) ?\n) 3 0)
+                                   (cl-case (char-before)
+                                     ((?. ?! ?\? ?\;) 3)
+                                     ((?, ?:) 1)
+                                     (t 0))))
+             (move-overlay spray--orp-overlay (1- orp) orp)
+             (move-overlay spray--base-overlay beg end)
+             (overlay-put spray--base-overlay
+                          'before-string (make-string (- 5 (- orp beg)) ?\s))
+             (narrow-to-region beg end))))))
 
 (provide 'spray)