egg-980402.

[elisp/egg.git] / egg.el

diff --git a/egg.el b/egg.el
index a88bcf2..caec255 100644 (file)
--- a/egg.el
+++ b/egg.el
@@ -9,7 +9,7 @@
 ;; Maintainer: NIIBE Yutaka <gniibe@mri.co.jp>
 ;; Keywords: mule, multilingual, input method
 
-;; This file will be part of GNU Emacs (in future).
+;; This file is part of EGG.
 
 ;; EGG is free software; you can redistribute it and/or modify
 ;; it under the terms of the GNU General Public License as published by
@@ -56,9 +56,9 @@
        (force-mode-line-update))
     ;; Turn on
     (if (null (string= (car arg) egg-last-method-name))
-       (progn
+       (let ((backend egg-conversion-backend))
          (funcall (nth 1 arg))
-         (egg-set-conversion-backend nil (list its-current-language) t)
+         (egg-set-conversion-backend backend (list its-current-language) t)
          (setq egg-default-language its-current-language)))
     (setq egg-last-method-name (car arg))
     (use-local-map (if egg-mode-preference
@@ -92,6 +92,85 @@
   (interactive)
   (its-start last-command-char))
 \f
+(defvar egg-mark-list nil)
+(defvar egg-suppress-marking nil)
+
+(defun egg-set-face (beg eng face)
+  (add-text-properties beg eng
+                      (list 'face face
+                            'egg-face face
+                            'modification-hooks '(egg-mark-modification))))
+
+(defun egg-mark-modification (beg end)
+  (if (and (null egg-suppress-marking)
+          (or (get-text-property beg 'egg-face)
+               (setq beg (next-single-property-change beg 'egg-face)))
+           (or (get-text-property (1- end) 'egg-face)
+               (setq end (previous-single-property-change end 'egg-face)))
+           (< beg end))
+      (let ((list egg-mark-list)
+            (found 0)
+            pair mb me b e)
+       (add-hook 'post-command-hook 'egg-redraw-face t)
+        (setq list egg-mark-list)
+       (while (and list (< found 2))
+          (setq pair (car list)
+                list (cdr list)
+                mb (car pair)
+                me (cdr pair)
+               b (marker-position mb)
+               e (marker-position me))
+          (cond
+           ;; no overwrapping -- SKIP
+           ((or (null (eq (marker-buffer mb) (current-buffer)))
+                (or (> beg e) (< end b))))
+           ;; completely included
+           ((and (>= beg b) (<= end e))
+            (setq found 3))
+           ;; partially overwrapping
+           (t
+           (set-marker mb nil)
+           (set-marker me nil)
+            (setq egg-mark-list (delete pair egg-mark-list)
+                  beg (min beg b)
+                  end (max end e)
+                  found (1+ found)))))
+        (if (< found 3)
+            (progn
+              (setq b (make-marker)
+                    e (make-marker)
+                    egg-mark-list (cons (cons b e) egg-mark-list))
+              (set-marker b beg)
+              (set-marker e end))))))
+
+(defun egg-redraw-face ()
+  (let ((inhibit-read-only t)
+       (egg-suppress-marking t)
+       (list egg-mark-list)
+       mb me b e p)
+    (setq egg-mark-list nil)
+    (remove-hook 'post-command-hook 'egg-redraw-face)
+    (save-excursion
+      (while list
+       (setq mb (car (car list))
+             me (cdr (car list))
+             list (cdr list))
+       (when (marker-buffer mb)
+         (set-buffer (marker-buffer mb))
+         (let ((before-change-functions nil) (after-change-functions nil))
+           (save-restriction
+             (widen)
+             (setq b (max mb (point-min))
+                   e (min me (point-max)))
+             (set-marker mb nil)
+             (set-marker me nil)
+             (while (< b e)
+               (if (null (get-text-property b 'egg-face))
+                   (setq b (next-single-property-change b 'egg-face nil e)))
+               (setq p (next-single-property-change b 'egg-face nil e))
+               (put-text-property b p 'face (get-text-property b 'egg-face))
+               (setq b p)))))))))
+\f
 (defun egg-hinshi-select ()
  (menudiag-select ; Should generate at initialization time
   '(menu  "\e$BIJ;lL>\e(B:"
@@ -163,17 +242,6 @@
 (defgroup egg nil
   "Tamagotchy --- EGG Versio 4.0")
 
-;;(load-library "its/hira")
-;;(setq-default its-current-map its-hira-map)
-
-;;(load-library "egg/wnn")
-;;(load-library "egg/wnnrpc")
-;;(setq egg-conversion-backend wnn-conversion-backend)
-
-;;(load-library "egg/sj3rpc")
-;;(load-library "egg/sj3")
-;;(setq egg-conversion-backend sj3-conversion-backend)
-
 (defvar egg-support-languages nil)
 
 (defun egg-set-support-languages (langs)
@@ -186,6 +254,10 @@
 (defun egg-kill-emacs-function ()
   (egg-finalize-backend))
 
+(if (not (fboundp 'set-buffer-multibyte))
+(defun set-buffer-multibyte (flag)
+  (setq enable-multibyte-characters flag)))
+
 (provide 'egg)
 
 ;;; egg.el ends here