;; GNU Emacs 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 2, or (at your option)
+;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; select-window changes frame-selected-window for whatever
;; frame that window is in.
(save-selected-window-alist
- (mapcar (lambda (frame) (list frame (frame-selected-window frame)))
+ (mapcar (lambda (frame) (cons frame (frame-selected-window frame)))
(frame-list))))
(save-current-buffer
(unwind-protect
(progn ,@body)
(dolist (elt save-selected-window-alist)
(and (frame-live-p (car elt))
- (window-live-p (cadr elt))
- (set-frame-selected-window (car elt) (cadr elt))))
+ (window-live-p (cdr elt))
+ (set-frame-selected-window (car elt) (cdr elt))))
(if (window-live-p save-selected-window-window)
(select-window save-selected-window-window))))))
PROC is called with a window as argument.
Optional second arg MINIBUF t means count the minibuffer window even
-if not active. MINIBUF nil or omitted means count the minibuffer iff
+if not active. MINIBUF nil or omitted means count the minibuffer only if
it is active. MINIBUF neither t nor nil means not to count the
minibuffer even if it is active.
returned.
Optional second arg MINIBUF t means count the minibuffer window even
-if not active. MINIBUF nil or omitted means count the minibuffer iff
+if not active. MINIBUF nil or omitted means count the minibuffer only if
it is active. MINIBUF neither t nor nil means not to count the
minibuffer even if it is active.
(defun bw-adjust-window (window delta horizontal)
"Wrapper around `adjust-window-trailing-edge' with error checking.
Arguments WINDOW, DELTA and HORIZONTAL are passed on to that function."
- (condition-case err
- (adjust-window-trailing-edge window delta horizontal)
- (error
- ;;(message "adjust: %s" (error-message-string err))
- )))
+ ;; `adjust-window-trailing-edge' may fail if delta is too large.
+ (while (>= (abs delta) 1)
+ (condition-case err
+ (progn
+ (adjust-window-trailing-edge window delta horizontal)
+ (setq delta 0))
+ (error
+ ;;(message "adjust: %s" (error-message-string err))
+ (setq delta (/ delta 2))))))
(defun bw-balance-sub (wt w h)
(setq wt (bw-refresh-edges wt))
(dolist (c childs)
(bw-balance-sub c cw ch)))))
+;;; A different solution to balance-windows
+
+(defun window-fixed-size-p (&optional window direction)
+ "Non-nil if WINDOW cannot be resized in DIRECTION.
+DIRECTION can be nil (i.e. any), `height' or `width'."
+ (with-current-buffer (window-buffer window)
+ (let ((fixed (and (boundp 'window-size-fixed) window-size-fixed)))
+ (when fixed
+ (not (and direction
+ (member (cons direction window-size-fixed)
+ '((height . width) (width . height)))))))))
+
+(defvar window-area-factor 1
+ "Factor by which the window area should be over-estimated.
+This is used by `balance-windows-area'.
+Changing this globally has no effect.")
+
+(defun balance-windows-area ()
+ "Make all visible windows the same area (approximately).
+See also `window-area-factor' to change the relative size of specific buffers."
+ (interactive)
+ (let* ((unchanged 0) (carry 0) (round 0)
+ ;; Remove fixed-size windows.
+ (wins (delq nil (mapcar (lambda (win)
+ (if (not (window-fixed-size-p win)) win))
+ (window-list nil 'nomini))))
+ (changelog nil)
+ next)
+ ;; Resizing a window changes the size of surrounding windows in complex
+ ;; ways, so it's difficult to balance them all. The introduction of
+ ;; `adjust-window-trailing-edge' made it a bit easier, but it is still
+ ;; very difficult to do. `balance-window' above takes an off-line
+ ;; approach: get the whole window tree, then balance it, then try to
+ ;; adjust the windows so they fit the result.
+ ;; Here, instead, we take a "local optimization" approach, where we just
+ ;; go through all the windows several times until nothing needs to be
+ ;; changed. The main problem with this approach is that it's difficult
+ ;; to make sure it terminates, so we use some heuristic to try and break
+ ;; off infinite loops.
+ ;; After a round without any change, we allow a second, to give a chance
+ ;; to the carry to propagate a minor imbalance from the end back to
+ ;; the beginning.
+ (while (< unchanged 2)
+ ;; (message "New round")
+ (setq unchanged (1+ unchanged) round (1+ round))
+ (dolist (win wins)
+ (setq next win)
+ (while (progn (setq next (next-window next))
+ (window-fixed-size-p next)))
+ ;; (assert (eq next (or (cadr (member win wins)) (car wins))))
+ (let* ((horiz
+ (< (car (window-edges win)) (car (window-edges next))))
+ (areadiff (/ (- (* (window-height next) (window-width next)
+ (buffer-local-value 'window-area-factor
+ (window-buffer next)))
+ (* (window-height win) (window-width win)
+ (buffer-local-value 'window-area-factor
+ (window-buffer win))))
+ (max (buffer-local-value 'window-area-factor
+ (window-buffer win))
+ (buffer-local-value 'window-area-factor
+ (window-buffer next)))))
+ (edgesize (if horiz
+ (+ (window-height win) (window-height next))
+ (+ (window-width win) (window-width next))))
+ (diff (/ areadiff edgesize)))
+ (when (zerop diff)
+ ;; Maybe diff is actually closer to 1 than to 0.
+ (setq diff (/ (* 3 areadiff) (* 2 edgesize))))
+ (when (and (zerop diff) (not (zerop areadiff)))
+ (setq diff (/ (+ areadiff carry) edgesize))
+ ;; Change things smoothly.
+ (if (or (> diff 1) (< diff -1)) (setq diff (/ diff 2))))
+ (if (zerop diff)
+ ;; Make sure negligible differences don't accumulate to
+ ;; become significant.
+ (setq carry (+ carry areadiff))
+ (bw-adjust-window win diff horiz)
+ ;; (sit-for 0.5)
+ (let ((change (cons win (window-edges win))))
+ ;; If the same change has been seen already for this window,
+ ;; we're most likely in an endless loop, so don't count it as
+ ;; a change.
+ (unless (member change changelog)
+ (push change changelog)
+ (setq unchanged 0 carry 0)))))))
+ ;; We've now basically balanced all the windows.
+ ;; But there may be some minor off-by-one imbalance left over,
+ ;; so let's do some fine tuning.
+ ;; (bw-finetune wins)
+ ;; (message "Done in %d rounds" round)
+ ))
+
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
\f
;; I think this should be the default; I think people will prefer it--rms.
(defun mouse-autoselect-window-select ()
"Select window with delayed window autoselection.
If the mouse position has stabilized in a non-selected window, select
-that window. The minibuffer window is selected iff the minibuffer is
+that window. The minibuffer window is selected only if the minibuffer is
active. This function is run by `mouse-autoselect-window-timer'."
(condition-case nil
(let* ((mouse-position (mouse-position))
;; If `mouse-autoselect-window' is positive, select
;; window if the window is the same as before.
(eq window mouse-autoselect-window-window))
- ;; Otherwise select window iff the mouse is at the same
+ ;; Otherwise select window if the mouse is at the same
;; position as before. Observe that the first test after
;; starting autoselection usually fails since the value of
;; `mouse-autoselect-window-position' recorded there is the
;; position where the mouse has entered the new window and
;; not necessarily where the mouse has stopped moving.
(equal mouse-position mouse-autoselect-window-position))
- ;; The minibuffer is a candidate window iff it's active.
+ ;; The minibuffer is a candidate window if it's active.
(or (not (window-minibuffer-p window))
(eq window (active-minibuffer-window))))
;; Mouse position has stabilized in non-selected window: Cancel
HCoop / bpt / emacs.git / blobdiff