;;; cal-move.el --- calendar functions for movement in the calendar
-;; Copyright (C) 1995, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
-;; Free Software Foundation, Inc.
+;; Copyright (C) 1995, 2001-2012 Free Software Foundation, Inc.
;; Author: Edward M. Reingold <reingold@cs.uiuc.edu>
;; Maintainer: Glenn Morris <rgm@gnu.org>
;; Keywords: calendar
;; Human-Keywords: calendar
+;; Package: calendar
;; This file is part of GNU Emacs.
;;; Code:
+;; FIXME should calendar just require this?
(require 'calendar)
+
+;; Note that this is not really the "closest" date.
+;; In most cases, it just searches forwards for the next day.
;;;###cal-autoload
(defun calendar-cursor-to-nearest-date ()
"Move the cursor to the closest date.
The position of the cursor is unchanged if it is already on a date.
Returns the list (month day year) giving the cursor position."
(or (calendar-cursor-to-date)
- (let ((column (current-column)))
- (when (> 3 (count-lines (point-min) (point)))
- (goto-line 3)
- (move-to-column column))
- (if (not (looking-at "[0-9]"))
- (if (and (not (looking-at " *$"))
- (or (< column 25)
- (and (> column 27)
- (< column 50))
- (and (> column 52)
- (< column 75))))
- (progn
- (re-search-forward "[0-9]" nil t)
- (backward-char 1))
- (re-search-backward "[0-9]" nil t)))
+ (let* ((col (current-column))
+ (edges (cdr (assoc (calendar-column-to-segment)
+ calendar-month-edges)))
+ (last (nth 2 edges))
+ (right (nth 3 edges)))
+ (when (< (count-lines (point-min) (point)) calendar-first-date-row)
+ (goto-char (point-min))
+ (forward-line (1- calendar-first-date-row))
+ (move-to-column col))
+ ;; The date positions are fixed and computable, but searching
+ ;; is probably more flexible. Need to consider blank days at
+ ;; start and end of month if computing positions.
+ ;; 'date text-property is used to exclude intermonth text.
+ (unless (and (looking-at "[0-9]")
+ (get-text-property (point) 'date))
+ ;; We search forwards for a number, except close to the RH
+ ;; margin of a month, where we search backwards.
+ ;; Note that the searches can go to other lines.
+ (if (or (looking-at " *$")
+ (and (> col last) (< col right)))
+ (while (and (re-search-backward "[0-9]" nil t)
+ (not (get-text-property (point) 'date))))
+ (while (and (re-search-forward "[0-9]" nil t)
+ (not (get-text-property (1- (point)) 'date))))
+ (backward-char 1)))
(calendar-cursor-to-date))))
(defvar displayed-month) ; from calendar-generate
(let ((month (calendar-extract-month date))
(day (calendar-extract-day date))
(year (calendar-extract-year date)))
- (goto-line (+ 3
- (/ (+ day -1
- (mod
- (- (calendar-day-of-week (list month 1 year))
- calendar-week-start-day)
- 7))
- 7)))
- (move-to-column (+ 6
- (* 25
+ (goto-char (point-min))
+ (forward-line (+ calendar-first-date-row -1
+ (/ (+ day -1
+ (mod
+ (- (calendar-day-of-week (list month 1 year))
+ calendar-week-start-day)
+ 7))
+ 7)))
+ (move-to-column (+ calendar-left-margin (1- calendar-day-digit-width)
+ (* calendar-month-width
(1+ (calendar-interval
displayed-month displayed-year month year)))
- (* 3 (mod
- (- (calendar-day-of-week date)
- calendar-week-start-day)
- 7))))))
+ (* calendar-column-width
+ (mod
+ (- (calendar-day-of-week date)
+ calendar-week-start-day)
+ 7))))))
;;;###cal-autoload
(defun calendar-goto-today ()
'scroll-calendar-right 'calendar-scroll-right "23.1")
;;;###cal-autoload
-(defun calendar-scroll-left-three-months (arg)
+(defun calendar-scroll-left-three-months (arg &optional event)
"Scroll the displayed calendar window left by 3*ARG months.
If ARG is negative the calendar is scrolled right. Maintains the relative
-position of the cursor with respect to the calendar as well as possible."
- (interactive "p")
- (calendar-scroll-left (* 3 arg)))
+position of the cursor with respect to the calendar as well as possible.
+EVENT is an event like `last-nonmenu-event'."
+ (interactive (list (prefix-numeric-value current-prefix-arg)
+ last-nonmenu-event))
+ (calendar-scroll-left (* 3 arg) event))
(define-obsolete-function-alias 'scroll-calendar-left-three-months
'calendar-scroll-left-three-months "23.1")
+;; cf scroll-bar-toolkit-scroll
;;;###cal-autoload
-(defun calendar-scroll-right-three-months (arg)
+(defun calendar-scroll-toolkit-scroll (event)
+ "Function to scroll the calendar after a toolkit scroll-bar click."
+ (interactive "e")
+ (let ((part (nth 4 (event-end event))))
+ ;; Not bothering with drag events (handle, end-scroll).
+ (cond ((memq part '(above-handle up top))
+ (calendar-scroll-right nil event))
+ ((memq part '(below-handle down bottom))
+ (calendar-scroll-left nil event)))))
+
+;;;###cal-autoload
+(defun calendar-scroll-right-three-months (arg &optional event)
"Scroll the displayed calendar window right by 3*ARG months.
If ARG is negative the calendar is scrolled left. Maintains the relative
-position of the cursor with respect to the calendar as well as possible."
- (interactive "p")
- (calendar-scroll-left (* -3 arg)))
+position of the cursor with respect to the calendar as well as possible.
+EVENT is an event like `last-nonmenu-event'."
+ (interactive (list (prefix-numeric-value current-prefix-arg)
+ last-nonmenu-event))
+ (calendar-scroll-left (* -3 arg) event))
(define-obsolete-function-alias 'scroll-calendar-right-three-months
'calendar-scroll-right-three-months "23.1")
(+ (calendar-absolute-from-gregorian cursor-date) arg)))
(new-display-month (calendar-extract-month new-cursor-date))
(new-display-year (calendar-extract-year new-cursor-date)))
- ;; Put the new month on the screen, if needed, and go to the new date.
- (if (not (calendar-date-is-visible-p new-cursor-date))
- (calendar-other-month new-display-month new-display-year))
+ ;; Put the new month on the screen, if needed.
+ (unless (calendar-date-is-visible-p new-cursor-date)
+ ;; The next line gives smoother scrolling IMO (one month at a
+ ;; time rather than two).
+ (calendar-increment-month new-display-month new-display-year
+ (if (< arg 0) 1 -1))
+ (calendar-other-month new-display-month new-display-year))
+ ;; Go to the new date.
(calendar-cursor-to-visible-date new-cursor-date)))
(run-hooks 'calendar-move-hook))
(provide 'cal-move)
-;; arch-tag: d0883c46-7e16-4914-8ff8-8f67e699b781
;;; cal-move.el ends here
HCoop / bpt / emacs.git / blobdiff