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* ruler-mode.el version 1.6
@ 2003-05-27 20:11 David Ponce
  2003-05-30 12:32 ` David Ponce
  0 siblings, 1 reply; 2+ messages in thread
From: David Ponce @ 2003-05-27 20:11 UTC (permalink / raw)


Hi All,

I submit you an important patch for ruler-mode.el (new version 1.6), to
take into account the recent changes made by Kim F. Storm to the display
margins, fringes and scroll-bar handling.

Here is the change log:

2003-05-27  David Ponce  <david@dponce.com>

         * ruler-mode.el

         Version 1.6

         Take into account changes made to the display margins, fringes
         and scroll-bar handling.

         (ruler-mode-margins-char): Removed.  No more used.
         (ruler-mode-pad-face, ruler-mode-fringes-face): New faces.
         (ruler-mode-margins-face): New definition.  Moved.
         (ruler-mode-left-fringe-cols)
         (ruler-mode-right-fringe-cols)
         (ruler-mode-left-scroll-bar-cols)
         (ruler-mode-right-scroll-bar-cols): Reimplemented.  Moved.
         (ruler-mode-full-window-width)
         (ruler-mode-window-col): New functions.
         (ruler-mode-mouse-set-left-margin)
         (ruler-mode-mouse-set-right-margin)
         (ruler-mode-mouse-add-tab-stop)
         (ruler-mode-mouse-del-tab-stop): Reimplemented.
         (ruler-mode-mouse-current-grab-object): Renamed to...
         (ruler-mode-dragged-symbol): New.
         (ruler-mode-mouse-grab-any-column): Use it.  Cleaned up.
         (ruler-mode-mouse-drag-any-column): Likewise.
         (ruler-mode-mouse-drag-any-column-iteration): Simplified.
         (ruler-mode): Restore previous `header-line-format' if
         `ruler-mode-header-line-format-old' has a local binding in current
         buffer.
         (ruler-mode-left-margin-help-echo)
         (ruler-mode-right-margin-help-echo): Removed.
         (ruler-mode-margin-help-echo)
         (ruler-mode-fringe-help-echo): New constants.
         (ruler-mode-ruler): Use them.  Reimplemented.


Sincerely,
David

Index: ruler-mode.el
===================================================================
RCS file: /cvsroot/emacs/emacs/lisp/ruler-mode.el,v
retrieving revision 1.13
diff -c -r1.13 ruler-mode.el
*** ruler-mode.el	13 Feb 2003 15:55:06 -0000	1.13
--- ruler-mode.el	27 May 2003 19:57:25 -0000
***************
*** 5,11 ****
   ;; Author: David Ponce <david@dponce.com>
   ;; Maintainer: David Ponce <david@dponce.com>
   ;; Created: 24 Mar 2001
! ;; Version: 1.5
   ;; Keywords: convenience

   ;; This file is part of GNU Emacs.
--- 5,11 ----
   ;; Author: David Ponce <david@dponce.com>
   ;; Maintainer: David Ponce <david@dponce.com>
   ;; Created: 24 Mar 2001
! ;; Version: 1.6
   ;; Keywords: convenience

   ;; This file is part of GNU Emacs.
***************
*** 33,46 ****
   ;; You can use the mouse to change the `fill-column' `comment-column',
   ;; `goal-column', `window-margins' and `tab-stop-list' settings:
   ;;
! ;; [header-line (shift down-mouse-1)] set left margin to the ruler
   ;; graduation where the mouse pointer is on.
   ;;
! ;; [header-line (shift down-mouse-3)] set right margin to the ruler
! ;; graduation where the mouse pointer is on.
   ;;
! ;; [header-line down-mouse-2] set `fill-column', `comment-column' or
! ;; `goal-column' to the ruler graduation with the mouse dragging.
   ;;
   ;; [header-line (control down-mouse-1)] add a tab stop to the ruler
   ;; graduation where the mouse pointer is on.
--- 33,46 ----
   ;; You can use the mouse to change the `fill-column' `comment-column',
   ;; `goal-column', `window-margins' and `tab-stop-list' settings:
   ;;
! ;; [header-line (shift down-mouse-1)] set left margin end to the ruler
   ;; graduation where the mouse pointer is on.
   ;;
! ;; [header-line (shift down-mouse-3)] set right margin beginning to
! ;; the ruler graduation where the mouse pointer is on.
   ;;
! ;; [header-line down-mouse-2] Drag the `fill-column', `comment-column'
! ;; or `goal-column' to a ruler graduation.
   ;;
   ;; [header-line (control down-mouse-1)] add a tab stop to the ruler
   ;; graduation where the mouse pointer is on.
***************
*** 57,70 ****
   ;; the `current-column' location, `ruler-mode-fill-column-char' shows
   ;; the `fill-column' location, `ruler-mode-comment-column-char' shows
   ;; the `comment-column' location, `ruler-mode-goal-column-char' shows
! ;; the `goal-column' and `ruler-mode-tab-stop-char' shows tab
! ;; stop locations.  `window-margins' areas are shown with a different
! ;; background color.
   ;;
   ;; It is also possible to customize the following characters:
   ;;
- ;; - `ruler-mode-margins-char' character used to pad margin areas
- ;;   (space by default).
   ;; - `ruler-mode-basic-graduation-char' character used for basic
   ;;   graduations ('.' by default).
   ;; - `ruler-mode-inter-graduation-char' character used for
--- 57,68 ----
   ;; the `current-column' location, `ruler-mode-fill-column-char' shows
   ;; the `fill-column' location, `ruler-mode-comment-column-char' shows
   ;; the `comment-column' location, `ruler-mode-goal-column-char' shows
! ;; the `goal-column' and `ruler-mode-tab-stop-char' shows tab stop
! ;; locations.  Graduations in `window-margins' and `window-fringes'
! ;; areas are shown with a different foreground color.
   ;;
   ;; It is also possible to customize the following characters:
   ;;
   ;; - `ruler-mode-basic-graduation-char' character used for basic
   ;;   graduations ('.' by default).
   ;; - `ruler-mode-inter-graduation-char' character used for
***************
*** 83,95 ****
   ;;   `current-column' character.
   ;; - `ruler-mode-tab-stop-face' the face used to highlight tab stop
   ;;   characters.
! ;; - `ruler-mode-margins-face' the face used to highlight the
! ;;   `window-margins' areas.
   ;; - `ruler-mode-column-number-face' the face used to highlight the
! ;;   number graduations.
   ;;
   ;; `ruler-mode-default-face' inherits from the built-in `default' face.
! ;; All `ruler-mode' faces inerit from `ruler-mode-default-face'.
   ;;
   ;; WARNING: To keep ruler graduations aligned on text columns it is
   ;; important to use the same font family and size for ruler and text
--- 81,95 ----
   ;;   `current-column' character.
   ;; - `ruler-mode-tab-stop-face' the face used to highlight tab stop
   ;;   characters.
! ;; - `ruler-mode-margins-face' the face used to highlight graduations
! ;;   in the `window-margins' areas.
! ;; - `ruler-mode-fringes-face' the face used to highlight graduations
! ;;   in the `window-fringes' areas.
   ;; - `ruler-mode-column-number-face' the face used to highlight the
! ;;   numbered graduations.
   ;;
   ;; `ruler-mode-default-face' inherits from the built-in `default' face.
! ;; All `ruler-mode' faces inherit from `ruler-mode-default-face'.
   ;;
   ;; WARNING: To keep ruler graduations aligned on text columns it is
   ;; important to use the same font family and size for ruler and text
***************
*** 179,192 ****
             (integer :tag "Integer char value"
                      :validate ruler-mode-character-validate)))

- (defcustom ruler-mode-margins-char ?\s
-   "*Character used in margin areas."
-   :group 'ruler-mode
-   :type '(choice
-           (character :tag "Character")
-           (integer :tag "Integer char value"
-                    :validate ruler-mode-character-validate)))
-
   (defcustom ruler-mode-basic-graduation-char ?\.
     "*Character used for basic graduations."
     :group 'ruler-mode
--- 179,184 ----
***************
*** 225,230 ****
--- 217,250 ----
     "Default face used by the ruler."
     :group 'ruler-mode)

+ (defface ruler-mode-pad-face
+   '((((type tty))
+      (:inherit ruler-mode-default-face
+                :background "grey50"
+                ))
+     (t
+      (:inherit ruler-mode-default-face
+                :background "grey64"
+                )))
+   "Face used to pad inactive ruler areas."
+   :group 'ruler-mode)
+
+ (defface ruler-mode-margins-face
+   '((t
+      (:inherit ruler-mode-default-face
+                :foreground "white"
+                )))
+   "Face used to highlight margin areas."
+   :group 'ruler-mode)
+
+ (defface ruler-mode-fringes-face
+   '((t
+      (:inherit ruler-mode-default-face
+                :foreground "green"
+                )))
+   "Face used to highlight fringes areas."
+   :group 'ruler-mode)
+
   (defface ruler-mode-column-number-face
     '((t
        (:inherit ruler-mode-default-face
***************
*** 265,282 ****
     "Face used to highlight tab stop characters."
     :group 'ruler-mode)

- (defface ruler-mode-margins-face
-   '((((type tty))
-      (:inherit ruler-mode-default-face
-                :background "grey50"
-                ))
-     (t
-      (:inherit ruler-mode-default-face
-                :background "grey64"
-                )))
-   "Face used to highlight the `window-margins' areas."
-   :group 'ruler-mode)
-
   (defface ruler-mode-current-column-face
     '((t
        (:inherit ruler-mode-default-face
--- 285,290 ----
***************
*** 286,492 ****
     "Face used to highlight the `current-column' character."
     :group 'ruler-mode)
   \f
   (defun ruler-mode-mouse-set-left-margin (start-event)
!   "Set left margin to the graduation where the mouse pointer is on.
   START-EVENT is the mouse click event."
     (interactive "e")
     (let* ((start (event-start start-event))
            (end   (event-end   start-event))
!          w col m lm0 lm rm)
!     (if (eq start end) ;; mouse click
!         (save-selected-window
!           (select-window (posn-window start))
!           (setq m   (window-margins)
!                 lm0 (or (car m) 0)
!                 rm  (or (cdr m) 0)
!                 w   (window-width)
!                 col (car (posn-col-row start))
!                 lm  (min (- w rm) col))
!           (message "Left margin set to %d (was %d)" lm lm0)
!           (set-window-margins nil lm rm)))))

   (defun ruler-mode-mouse-set-right-margin (start-event)
!   "Set right margin to the graduation where the mouse pointer is on.
   START-EVENT is the mouse click event."
     (interactive "e")
     (let* ((start (event-start start-event))
            (end   (event-end   start-event))
!          m col w lm rm0 rm)
!     (if (eq start end) ;; mouse click
!         (save-selected-window
!           (select-window (posn-window start))
!           (setq m   (window-margins)
!                 rm0 (or (cdr m) 0)
!                 lm  (or (car m) 0)
!                 col (car (posn-col-row start))
!                 w   (window-width)
!                 rm  (max 0 (- w col)))
!           (message "Right margin set to %d (was %d)" rm rm0)
!           (set-window-margins nil lm rm)))))

! (defvar ruler-mode-mouse-current-grab-object nil
     "Column symbol dragged in the ruler.
   That is `fill-column', `comment-column', `goal-column', or nil when
   nothing is dragged.")

   (defun ruler-mode-mouse-grab-any-column (start-event)
!   "Set a column symbol to the graduation with mouse dragging.
! See also variable `ruler-mode-mouse-current-grab-object'.
! START-EVENT is the mouse down event."
     (interactive "e")
!   (setq ruler-mode-mouse-current-grab-object nil)
     (let* ((start (event-start start-event))
!          m col w lm rm hs newc oldc)
       (save-selected-window
         (select-window (posn-window start))
!       (setq m   (window-margins)
!             lm  (or (car m) 0)
!             rm  (or (cdr m) 0)
!             col (- (car (posn-col-row start)) lm)
!             w   (window-width)
!             hs  (window-hscroll)
!             newc  (+ col hs))
!       ;;
!       ;; About the ways to handle the goal column:
!       ;; A. update the value of the goal column if goal-column has
!       ;;    non-nil value and if the mouse is dragged
!       ;; B. set value to the goal column if goal-column has nil and if
!       ;;    the mouse is just clicked, not dragged.
!       ;; C. unset value to the goal column if goal-column has non-nil
!       ;;    and mouse is just clicked on goal-column character on the
!       ;;    ruler, not dragged.
!       ;;
!       (and (>= col 0) (< (+ col lm rm) w)
!            (cond
!             ((eq newc fill-column)
!              (setq oldc fill-column)
!              (setq ruler-mode-mouse-current-grab-object 'fill-column)
!              t)
!             ((eq newc comment-column)
!              (setq oldc comment-column)
!              (setq ruler-mode-mouse-current-grab-object 'comment-column)
!              t)
!             ((eq newc goal-column)      ; A. update goal column
!              (setq oldc goal-column)
!              (setq ruler-mode-mouse-current-grab-object 'goal-column)
!              t)
!             ((null goal-column)         ; B. set goal column
!              (setq oldc goal-column)
!              (setq goal-column newc)
!              ;; mouse-2 coming AFTER drag-mouse-2 invokes `ding'.
!              ;; This `ding' flushes the next messages about setting
!              ;; goal column. So here I force fetch the event(mouse-2)
!              ;; and throw away.
!              (read-event)
!              ;; Ding BEFORE `message' is OK.
!              (if ruler-mode-set-goal-column-ding-flag
!                  (ding))
!              (message
!               "Goal column %d (click `%s' on the ruler again to unset it)"
!               newc
!               (propertize (char-to-string ruler-mode-goal-column-char)
!                           'face 'ruler-mode-goal-column-face))
!              ;; don't enter drag iteration
!              nil))
!            (if (eq 'click (ruler-mode-mouse-drag-any-column-iteration
!                            (posn-window start)))
!                (if (eq 'goal-column ruler-mode-mouse-current-grab-object)
!                    ;; C. unset goal column
!                    (set-goal-column t))
!              ;; *-column is updated; report it
!              (message "%s is set to %d (was %d)"
!                       ruler-mode-mouse-current-grab-object
!                       (eval ruler-mode-mouse-current-grab-object)
!                       oldc))))))

   (defun ruler-mode-mouse-drag-any-column-iteration (window)
     "Update the ruler while dragging the mouse.
! WINDOW is the window where the last down-mouse event is occurred.
! Return a symbol `drag' if the mouse is actually dragged.
! Return a symbol `click' if the mouse is just clicked."
!   (let (newevent
!         (drag-count 0))
       (track-mouse
!       (while (progn
!                (setq newevent (read-event))
!                (mouse-movement-p newevent))
!         (setq drag-count (1+ drag-count))
!         (if (eq window (posn-window (event-end newevent)))
!             (progn
!               (ruler-mode-mouse-drag-any-column newevent)
!               (force-mode-line-update)))))
!     (if (and (eq drag-count 0)
!              (eq 'click (car (event-modifiers newevent))))
           'click
         'drag)))

   (defun ruler-mode-mouse-drag-any-column (start-event)
!   "Update the ruler for START-EVENT, one mouse motion event."
     (let* ((start (event-start start-event))
            (end   (event-end   start-event))
!          m col w lm rm hs newc)
       (save-selected-window
         (select-window (posn-window start))
!       (setq m   (window-margins)
!             lm  (or (car m) 0)
!             rm  (or (cdr m) 0)
!             col (- (car (posn-col-row end)) lm)
!             w   (window-width)
!             hs  (window-hscroll)
!             newc  (+ col hs))
!       (if (and (>= col 0) (< (+ col lm rm) w))
!           (set ruler-mode-mouse-current-grab-object newc)))))
   \f
   (defun ruler-mode-mouse-add-tab-stop (start-event)
     "Add a tab stop to the graduation where the mouse pointer is on.
   START-EVENT is the mouse click event."
     (interactive "e")
!   (if ruler-mode-show-tab-stops
!       (let* ((start (event-start start-event))
!              (end   (event-end   start-event))
!              m col w lm rm hs ts)
!         (if (eq start end) ;; mouse click
!             (save-selected-window
!               (select-window (posn-window start))
!               (setq m   (window-margins)
!                     lm  (or (car m) 0)
!                     rm  (or (cdr m) 0)
!                     col (- (car (posn-col-row start)) lm)
!                     w   (window-width)
!                     hs  (window-hscroll)
!                     ts  (+ col hs))
!               (and (>= col 0) (< (+ col lm rm) w)
!                    (not (member ts tab-stop-list))
!                    (progn
!                      (message "Tab stop set to %d" ts)
!                      (setq tab-stop-list
!                            (sort (cons ts tab-stop-list)
!                                  #'<)))))))))

   (defun ruler-mode-mouse-del-tab-stop (start-event)
     "Delete tab stop at the graduation where the mouse pointer is on.
   START-EVENT is the mouse click event."
     (interactive "e")
!   (if ruler-mode-show-tab-stops
!       (let* ((start (event-start start-event))
!              (end   (event-end   start-event))
!              m col w lm rm hs ts)
!         (if (eq start end) ;; mouse click
!             (save-selected-window
!               (select-window (posn-window start))
!               (setq m   (window-margins)
!                     lm  (or (car m) 0)
!                     rm  (or (cdr m) 0)
!                     col (- (car (posn-col-row start)) lm)
!                     w   (window-width)
!                     hs  (window-hscroll)
!                     ts  (+ col hs))
!               (and (>= col 0) (< (+ col lm rm) w)
!                    (member ts tab-stop-list)
!                    (progn
!                      (message "Tab stop at %d deleted" ts)
!                      (setq tab-stop-list
!                            (delete ts tab-stop-list)))))))))

   (defun ruler-mode-toggle-show-tab-stops ()
     "Toggle showing of tab stops on the ruler."
--- 294,544 ----
     "Face used to highlight the `current-column' character."
     :group 'ruler-mode)
   \f
+ (defmacro ruler-mode-left-fringe-cols ()
+   "Return the width, measured in columns, of the left fringe area."
+   '(ceiling (or (car (window-fringes)) 0)
+             (frame-char-width)))
+
+ (defmacro ruler-mode-right-fringe-cols ()
+   "Return the width, measured in columns, of the right fringe area."
+   '(ceiling (or (nth 1 (window-fringes)) 0)
+             (frame-char-width)))
+
+ (defun ruler-mode-left-scroll-bar-cols ()
+   "Return the width, measured in columns, of the right vertical scrollbar."
+   (let* ((wsb   (window-scroll-bars))
+          (vtype (nth 2 wsb))
+          (cols  (nth 1 wsb)))
+     (if (or (eq vtype 'left)
+             (and (eq vtype t)
+                  (eq (frame-parameter nil 'vertical-scroll-bars) 'left)))
+         (or cols
+             (ceiling
+              ;; nil means it's a non-toolkit scroll bar,
+              ;; and its width in columns is 14 pixels rounded up.
+              (or (frame-parameter nil 'scroll-bar-width) 14)
+              ;; Always round up to multiple of columns.
+              (frame-char-width)))
+       0)))
+
+ (defun ruler-mode-right-scroll-bar-cols ()
+   "Return the width, measured in columns, of the right vertical scrollbar."
+   (let* ((wsb   (window-scroll-bars))
+          (vtype (nth 2 wsb))
+          (cols  (nth 1 wsb)))
+     (if (or (eq vtype 'right)
+             (and (eq vtype t)
+                  (eq (frame-parameter nil 'vertical-scroll-bars) 'right)))
+         (or cols
+             (ceiling
+              ;; nil means it's a non-toolkit scroll bar,
+              ;; and its width in columns is 14 pixels rounded up.
+              (or (frame-parameter nil 'scroll-bar-width) 14)
+              ;; Always round up to multiple of columns.
+              (frame-char-width)))
+       0)))
+
+ (defsubst ruler-mode-full-window-width ()
+   "Return the full width of the selected window."
+   (let ((edges (window-edges)))
+     (- (nth 2 edges) (nth 0 edges))))
+
+ (defsubst ruler-mode-window-col (n)
+   "Return a column number relative to the selected window.
+ N is a column number relative to selected frame."
+   (- n
+      (car (window-edges))
+      (or (car (window-margins)) 0)
+      (ruler-mode-left-fringe-cols)
+      (ruler-mode-left-scroll-bar-cols)))
+ \f
   (defun ruler-mode-mouse-set-left-margin (start-event)
!   "Set left margin end to the graduation where the mouse pointer is on.
   START-EVENT is the mouse click event."
     (interactive "e")
     (let* ((start (event-start start-event))
            (end   (event-end   start-event))
!          col w lm rm)
!     (when (eq start end) ;; mouse click
!       (save-selected-window
!         (select-window (posn-window start))
!         (setq col (- (car (posn-col-row start)) (car (window-edges))
!                      (ruler-mode-left-scroll-bar-cols))
!               w   (- (ruler-mode-full-window-width)
!                      (ruler-mode-left-scroll-bar-cols)
!                      (ruler-mode-right-scroll-bar-cols)))
!         (when (and (>= col 0) (< col w))
!           (setq lm (window-margins)
!                 rm (or (cdr lm) 0)
!                 lm (or (car lm) 0))
!           (message "Left margin set to %d (was %d)" col lm)
!           (set-window-margins nil col rm))))))

   (defun ruler-mode-mouse-set-right-margin (start-event)
!   "Set right margin beginning to the graduation where the mouse pointer is on.
   START-EVENT is the mouse click event."
     (interactive "e")
     (let* ((start (event-start start-event))
            (end   (event-end   start-event))
!          col w lm rm)
!     (when (eq start end) ;; mouse click
!       (save-selected-window
!         (select-window (posn-window start))
!         (setq col (- (car (posn-col-row start)) (car (window-edges))
!                      (ruler-mode-left-scroll-bar-cols))
!               w   (- (ruler-mode-full-window-width)
!                      (ruler-mode-left-scroll-bar-cols)
!                      (ruler-mode-right-scroll-bar-cols)))
!         (when (and (>= col 0) (< col w))
!           (setq lm  (window-margins)
!                 rm  (or (cdr lm) 0)
!                 lm  (or (car lm) 0)
!                 col (- w col 1))
!           (message "Right margin set to %d (was %d)" col rm)
!           (set-window-margins nil lm col))))))

! (defvar ruler-mode-dragged-symbol nil
     "Column symbol dragged in the ruler.
   That is `fill-column', `comment-column', `goal-column', or nil when
   nothing is dragged.")

   (defun ruler-mode-mouse-grab-any-column (start-event)
!   "Drag a column symbol on the ruler.
! Start dragging on mouse down event START-EVENT, and update the column
! symbol value with the current value of the ruler graduation while
! dragging.  See also the variable `ruler-mode-dragged-symbol'."
     (interactive "e")
!   (setq ruler-mode-dragged-symbol nil)
     (let* ((start (event-start start-event))
!          col newc oldc)
       (save-selected-window
         (select-window (posn-window start))
!       (setq col  (ruler-mode-window-col (car (posn-col-row start)))
!             newc (+ col (window-hscroll)))
!       (and
!        (>= col 0) (< col (window-width))
!        (cond
!
!         ;; Handle the fill column.
!         ((eq newc fill-column)
!          (setq oldc fill-column
!                ruler-mode-dragged-symbol 'fill-column)
!          t) ;; Start dragging
!
!         ;; Handle the comment column.
!         ((eq newc comment-column)
!          (setq oldc comment-column
!                ruler-mode-dragged-symbol 'comment-column)
!          t) ;; Start dragging
!
!         ;; Handle the goal column.
!         ;; A. On mouse down on the goal column character on the ruler,
!         ;;    update the `goal-column' value while dragging.
!         ;; B. If `goal-column' is nil, set the goal column where the
!         ;;    mouse is clicked.
!         ;; C. On mouse click on the goal column character on the
!         ;;    ruler, unset the goal column.
!         ((eq newc goal-column)          ; A. Drag the goal column.
!          (setq oldc goal-column
!                ruler-mode-dragged-symbol 'goal-column)
!          t) ;; Start dragging
!
!         ((null goal-column)             ; B. Set the goal column.
!          (setq oldc goal-column
!                goal-column newc)
!          ;; mouse-2 coming AFTER drag-mouse-2 invokes `ding'.  This
!          ;; `ding' flushes the next messages about setting goal
!          ;; column.  So here I force fetch the event(mouse-2) and
!          ;; throw away.
!          (read-event)
!          ;; Ding BEFORE `message' is OK.
!          (when ruler-mode-set-goal-column-ding-flag
!            (ding))
!          (message "Goal column set to %d (click on %s again to unset it)"
!                   newc
!                   (propertize (char-to-string ruler-mode-goal-column-char)
!                               'face 'ruler-mode-goal-column-face))
!          nil) ;; Don't start dragging.
!         )
!        (if (eq 'click (ruler-mode-mouse-drag-any-column-iteration
!                        (posn-window start)))
!            (when (eq 'goal-column ruler-mode-dragged-symbol)
!              ;; C. Unset the goal column.
!              (set-goal-column t))
!          ;; At end of dragging, report the updated column symbol.
!          (message "%s is set to %d (was %d)"
!                   ruler-mode-dragged-symbol
!                   (symbol-value ruler-mode-dragged-symbol)
!                   oldc))))))

   (defun ruler-mode-mouse-drag-any-column-iteration (window)
     "Update the ruler while dragging the mouse.
! WINDOW is the window where occurred the last down-mouse event.
! Return the symbol `drag' if the mouse has been dragged, or `click' if
! the mouse has been clicked."
!   (let ((drags 0)
!         event)
       (track-mouse
!       (while (mouse-movement-p (setq event (read-event)))
!         (setq drags (1+ drags))
!         (when (eq window (posn-window (event-end event)))
!           (ruler-mode-mouse-drag-any-column event)
!           (force-mode-line-update))))
!     (if (and (zerop drags) (eq 'click (car (event-modifiers event))))
           'click
         'drag)))

   (defun ruler-mode-mouse-drag-any-column (start-event)
!   "Update the value of the symbol dragged on the ruler.
! Called on each mouse motion event START-EVENT."
     (let* ((start (event-start start-event))
            (end   (event-end   start-event))
!          col newc)
       (save-selected-window
         (select-window (posn-window start))
!       (setq col  (ruler-mode-window-col (car (posn-col-row end)))
!             newc (+ col (window-hscroll)))
!       (when (and (>= col 0) (< col (window-width)))
!         (set ruler-mode-dragged-symbol newc)))))
   \f
   (defun ruler-mode-mouse-add-tab-stop (start-event)
     "Add a tab stop to the graduation where the mouse pointer is on.
   START-EVENT is the mouse click event."
     (interactive "e")
!   (when ruler-mode-show-tab-stops
!     (let* ((start (event-start start-event))
!            (end   (event-end   start-event))
!            col ts)
!       (when (eq start end) ;; mouse click
!         (save-selected-window
!           (select-window (posn-window start))
!           (setq col (ruler-mode-window-col (car (posn-col-row start)))
!                 ts  (+ col (window-hscroll)))
!           (and (>= col 0) (< col (window-width))
!                (not (member ts tab-stop-list))
!                (progn
!                  (message "Tab stop set to %d" ts)
!                  (setq tab-stop-list (sort (cons ts tab-stop-list)
!                                            #'<)))))))))

   (defun ruler-mode-mouse-del-tab-stop (start-event)
     "Delete tab stop at the graduation where the mouse pointer is on.
   START-EVENT is the mouse click event."
     (interactive "e")
!   (when ruler-mode-show-tab-stops
!     (let* ((start (event-start start-event))
!            (end   (event-end   start-event))
!            col ts)
!       (when (eq start end) ;; mouse click
!         (save-selected-window
!           (select-window (posn-window start))
!           (setq col (ruler-mode-window-col (car (posn-col-row start)))
!                 ts  (+ col (window-hscroll)))
!           (and (>= col 0) (< col (window-width))
!                (member ts tab-stop-list)
!                (progn
!                  (message "Tab stop at %d deleted" ts)
!                  (setq tab-stop-list (delete ts tab-stop-list)))))))))

   (defun ruler-mode-toggle-show-tab-stops ()
     "Toggle showing of tab stops on the ruler."
***************
*** 542,548 ****
       ;; the current one is the ruler header line format.
       (when (eq header-line-format ruler-mode-header-line-format)
         (kill-local-variable 'header-line-format)
!       (when ruler-mode-header-line-format-old
           (setq header-line-format ruler-mode-header-line-format-old)))
       (remove-hook 'post-command-hook     ; remove local hook
                    #'force-mode-line-update t)))
--- 594,600 ----
       ;; the current one is the ruler header line format.
       (when (eq header-line-format ruler-mode-header-line-format)
         (kill-local-variable 'header-line-format)
!       (when (local-variable-p 'ruler-mode-header-line-format-old)
           (setq header-line-format ruler-mode-header-line-format-old)))
       (remove-hook 'post-command-hook     ; remove local hook
                    #'force-mode-line-update t)))
***************
*** 588,782 ****
   mouse-2: unset goal column"
     "Help string shown when mouse is on the goal column character.")

! (defconst ruler-mode-left-margin-help-echo
!   "Left margin %S"
!   "Help string shown when mouse is over the left margin area.")
!
! (defconst ruler-mode-right-margin-help-echo
!   "Right margin %S"
!   "Help string shown when mouse is over the right margin area.")
!
! (defmacro ruler-mode-left-fringe-cols ()
!   "Return the width, measured in columns, of the left fringe area."
!   '(round (or (frame-parameter nil 'left-fringe) 0)
!           (frame-char-width)))
!
! (defmacro ruler-mode-right-fringe-cols ()
!   "Return the width, measured in columns, of the right fringe area."
!   '(round (or (frame-parameter nil 'right-fringe) 0)
!           (frame-char-width)))
!
! (defmacro ruler-mode-left-scroll-bar-cols ()
!   "Return the width, measured in columns, of the left vertical scrollbar."
!   '(if (eq (frame-parameter nil 'vertical-scroll-bars) 'left)
!        (let ((sbw (frame-parameter nil 'scroll-bar-width)))
!          ;; nil means it's a non-toolkit scroll bar,
!          ;; and its width in columns is 14 pixels rounded up.
!          (unless sbw (setq sbw 14))
!          ;; Always round up to multiple of columns.
!          (ceiling sbw (frame-char-width)))
!      0))
!
! (defmacro ruler-mode-right-scroll-bar-cols ()
!   "Return the width, measured in columns, of the right vertical scrollbar."
!   '(if (eq (frame-parameter nil 'vertical-scroll-bars) 'right)
!        (round (or (frame-parameter nil 'scroll-bar-width) 0)
!               (frame-char-width))
!      0))
   \f
   (defun ruler-mode-ruler ()
     "Return a string ruler."
!   (if ruler-mode
!       (let* ((j     (+ (ruler-mode-left-fringe-cols)
!                        (ruler-mode-left-scroll-bar-cols)))
!              (w     (+ (window-width) j))
!              (m     (window-margins))
!              (l     (or (car m) 0))
!              (r     (or (cdr m) 0))
!              (o     (- (window-hscroll) l j))
!              (i     0)
!              (ruler (concat
!                      ;; unit graduations
!                      (make-string w ruler-mode-basic-graduation-char)
!                      ;; extra space to fill the header line
!                      (make-string (+ (ruler-mode-right-fringe-cols)
!                                      (ruler-mode-right-scroll-bar-cols))
!                                   ?\ )))
!              c k)
!
!         ;; Setup default face and help echo.
!         (put-text-property 0 (length ruler)
!                            'face 'ruler-mode-default-face
!                            ruler)
!         (put-text-property 0 (length ruler)
!                            'help-echo
!                            (if ruler-mode-show-tab-stops
!                                ruler-mode-ruler-help-echo-when-tab-stops
!                              (if goal-column
!                                  ruler-mode-ruler-help-echo-when-goal-column
!                                ruler-mode-ruler-help-echo))
!                            ruler)
!         ;; Setup the local map.
!         (put-text-property 0 (length ruler)
!                            'local-map ruler-mode-map
!                            ruler)
!
!         (setq j (+ l j))
!         ;; Setup the left margin area.
!         (put-text-property
!          i j 'face 'ruler-mode-margins-face
!          ruler)
!         (put-text-property
!          i j 'help-echo (format ruler-mode-left-margin-help-echo l)
!          ruler)
!         (while (< i j)
!           (aset ruler i ruler-mode-margins-char)
!           (setq i (1+ i)))
!
!         ;; Setup the ruler area.
!         (setq r (- w r))
!         (while (< i r)
!           (setq j (+ i o))
!           (cond
!            ((= (mod j 10) 0)
!             (setq c (number-to-string (/ j 10))
!                   m (length c)
!                   k i)
!             (put-text-property
!              i (1+ i) 'face 'ruler-mode-column-number-face
!              ruler)
!             (while (and (> m 0) (>= k 0))
!               (aset ruler k (aref c (setq m (1- m))))
!               (setq k (1- k)))
!             )
!            ((= (mod j 5) 0)
!             (aset ruler i ruler-mode-inter-graduation-char)
!             )
!            )
!           (setq i (1+ i)))
!
!         ;; Setup the right margin area.
!         (put-text-property
!          i (length ruler) 'face 'ruler-mode-margins-face
!          ruler)
!         (put-text-property
!          i (length ruler) 'help-echo
!          (format ruler-mode-right-margin-help-echo (- w r))
!          ruler)
!         (while (< i (length ruler))
!           (aset ruler i ruler-mode-margins-char)
!           (setq i (1+ i)))
!
!         ;; Show the `goal-column' marker.
!         (if goal-column
!             (progn
!               (setq i (- goal-column o))
!               (and (>= i 0) (< i r)
!                    (aset ruler i ruler-mode-goal-column-char)
!                    (progn
!                      (put-text-property
!                       i (1+ i) 'face 'ruler-mode-goal-column-face
!                       ruler)
!                      (put-text-property
!                       i (1+ i) 'help-echo ruler-mode-goal-column-help-echo
!                       ruler))
!                    )))
!
!         ;; Show the `comment-column' marker.
!         (setq i (- comment-column o))
!         (and (>= i 0) (< i r)
!              (aset ruler i ruler-mode-comment-column-char)
!              (progn
!                (put-text-property
!                 i (1+ i) 'face 'ruler-mode-comment-column-face
!                 ruler)
!                (put-text-property
!                 i (1+ i) 'help-echo ruler-mode-comment-column-help-echo
!                 ruler)))
!
!         ;; Show the `fill-column' marker.
!         (setq i (- fill-column o))
!         (and (>= i 0) (< i r)
!              (aset ruler i ruler-mode-fill-column-char)
!              (progn (put-text-property
!                      i (1+ i) 'face 'ruler-mode-fill-column-face
!                      ruler)
!                     (put-text-property
!                      i (1+ i) 'help-echo ruler-mode-fill-column-help-echo
!                      ruler)))
!
!         ;; Show the `tab-stop-list' markers.
!         (if ruler-mode-show-tab-stops
!             (let ((tsl tab-stop-list) ts)
!               (while tsl
!                 (setq ts  (car tsl)
!                       tsl (cdr tsl)
!                       i   (- ts o))
!                 (and (>= i 0) (< i r)
!                      (aset ruler i ruler-mode-tab-stop-char)
!                      (put-text-property
!                       i (1+ i)
!                       'face (cond
!                              ;; Don't override the *-column face
!                              ((eq ts fill-column)
!                               'ruler-mode-fill-column-face)
!                              ((eq ts comment-column)
!                               'ruler-mode-comment-column-face)
!                              ((eq ts goal-column)
!                               'ruler-mode-goal-column-face)
!                              (t
!                               'ruler-mode-tab-stop-face))
!                       ruler)))))
!
!         ;; Show the `current-column' marker.
!         (setq i (- (current-column) o))
!         (and (>= i 0) (< i r)
!              (aset ruler i ruler-mode-current-column-char)
!              (put-text-property
!               i (1+ i) 'face 'ruler-mode-current-column-face
!               ruler))
!
!         ruler)))

   (provide 'ruler-mode)

--- 640,789 ----
   mouse-2: unset goal column"
     "Help string shown when mouse is on the goal column character.")

! (defconst ruler-mode-margin-help-echo
!   "%s margin %S"
!   "Help string shown when mouse is over a margin area.")
!
! (defconst ruler-mode-fringe-help-echo
!   "%s fringe %S"
!   "Help string shown when mouse is over a fringe area.")
   \f
   (defun ruler-mode-ruler ()
     "Return a string ruler."
!   (when ruler-mode
!     (let* ((fullw (ruler-mode-full-window-width))
!            (w     (window-width))
!            (m     (window-margins))
!            (lsb   (ruler-mode-left-scroll-bar-cols))
!            (lf    (ruler-mode-left-fringe-cols))
!            (lm    (or (car m) 0))
!            (rsb   (ruler-mode-right-scroll-bar-cols))
!            (rf    (ruler-mode-right-fringe-cols))
!            (rm    (or (cdr m) 0))
!            (ruler (make-string fullw ruler-mode-basic-graduation-char))
!            (o     (+ lsb lf lm))
!            (x     0)
!            (i     o)
!            (j     (window-hscroll))
!            k c l1 l2 r2 r1 h1 h2 f1 f2)
!
!       ;; Setup the default properties.
!       (put-text-property 0 fullw 'face 'ruler-mode-default-face ruler)
!       (put-text-property 0 fullw
!                          'help-echo
!                          (cond
!                           (ruler-mode-show-tab-stops
!                            ruler-mode-ruler-help-echo-when-tab-stops)
!                           (goal-column
!                            ruler-mode-ruler-help-echo-when-goal-column)
!                           (t
!                            ruler-mode-ruler-help-echo))
!                          ruler)
!       ;; Setup the local map.
!       (put-text-property 0 fullw 'local-map ruler-mode-map ruler)
!
!       ;; Setup the active area.
!       (while (< x w)
!         ;; Graduations.
!         (cond
!          ;; Show a number graduation.
!          ((= (mod j 10) 0)
!           (setq c (number-to-string (/ j 10))
!                 m (length c)
!                 k i)
!           (put-text-property
!            i (1+ i) 'face 'ruler-mode-column-number-face
!            ruler)
!           (while (and (> m 0) (>= k 0))
!             (aset ruler k (aref c (setq m (1- m))))
!             (setq k (1- k))))
!          ;; Show an intermediate graduation.
!          ((= (mod j 5) 0)
!           (aset ruler i ruler-mode-inter-graduation-char)))
!         ;; Special columns.
!         (cond
!          ;; Show the `current-column' marker.
!          ((= j (current-column))
!           (aset ruler i ruler-mode-current-column-char)
!           (put-text-property
!            i (1+ i) 'face 'ruler-mode-current-column-face
!            ruler))
!          ;; Show the `goal-column' marker.
!          ((and goal-column (= j goal-column))
!           (aset ruler i ruler-mode-goal-column-char)
!           (put-text-property
!            i (1+ i) 'face 'ruler-mode-goal-column-face
!            ruler)
!           (put-text-property
!            i (1+ i) 'help-echo ruler-mode-goal-column-help-echo
!            ruler))
!          ;; Show the `comment-column' marker.
!          ((= j comment-column)
!           (aset ruler i ruler-mode-comment-column-char)
!           (put-text-property
!            i (1+ i) 'face 'ruler-mode-comment-column-face
!            ruler)
!           (put-text-property
!            i (1+ i) 'help-echo ruler-mode-comment-column-help-echo
!            ruler))
!          ;; Show the `fill-column' marker.
!          ((= j fill-column)
!           (aset ruler i ruler-mode-fill-column-char)
!           (put-text-property
!            i (1+ i) 'face 'ruler-mode-fill-column-face
!            ruler)
!           (put-text-property
!            i (1+ i) 'help-echo ruler-mode-fill-column-help-echo
!            ruler))
!          ;; Show the `tab-stop-list' markers.
!          ((and ruler-mode-show-tab-stops (member j tab-stop-list))
!           (aset ruler i ruler-mode-tab-stop-char)
!           (put-text-property
!            i (1+ i) 'face 'ruler-mode-tab-stop-face
!            ruler)))
!         (setq i (1+ i)
!               j (1+ j)
!               x (1+ x)))
!
!       ;; Highlight the fringes and margins.
!       (if (nth 2 (window-fringes))
!           ;; fringes outside margins.
!           (setq l1 lf
!                 l2 lm
!                 r2 rm
!                 r1 rf
!                 h1 ruler-mode-fringe-help-echo
!                 h2 ruler-mode-margin-help-echo
!                 f1 'ruler-mode-fringes-face
!                 f2 'ruler-mode-margins-face)
!         ;; fringes inside margins.
!         (setq l1 lm
!               l2 lf
!               r2 rf
!               r1 rm
!               h1 ruler-mode-margin-help-echo
!               h2 ruler-mode-fringe-help-echo
!               f1 'ruler-mode-margins-face
!               f2 'ruler-mode-fringes-face))
!       (setq i lsb j (+ i l1))
!       (put-text-property i j 'face f1 ruler)
!       (put-text-property i j 'help-echo (format h1 "Left" l1) ruler)
!       (setq i j j (+ i l2))
!       (put-text-property i j 'face f2 ruler)
!       (put-text-property i j 'help-echo (format h2 "Left" l2) ruler)
!       (setq i (+ o w) j (+ i r2))
!       (put-text-property i j 'face f2 ruler)
!       (put-text-property i j 'help-echo (format h2 "Right" r2) ruler)
!       (setq i j j (+ i r1))
!       (put-text-property i j 'face f1 ruler)
!       (put-text-property i j 'help-echo (format h1 "Right" r1) ruler)
!
!       ;; Show inactive areas.
!       (put-text-property 0 lsb   'face 'ruler-mode-pad-face ruler)
!       (put-text-property j fullw 'face 'ruler-mode-pad-face ruler)
!
!       ;; Return the ruler propertized string.
!       ruler)))

   (provide 'ruler-mode)

^ permalink raw reply	[flat|nested] 2+ messages in thread

end of thread, other threads:[~2003-05-30 12:32 UTC | newest]

Thread overview: 2+ messages (download: mbox.gz follow: Atom feed
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2003-05-27 20:11 ruler-mode.el version 1.6 David Ponce
2003-05-30 12:32 ` David Ponce

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