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Fix handling of 'window-combination-resize' with fixed-size windows

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* lisp/window.el (window-combinations): New optional argument
IGNORE-FIXED.
(window--combination-resizable): New function.
(split-window): Fix handling of 'window-combination-resize'
in the presence of fixed-size windows.
This commit is contained in:
Martin Rudalics 2019-03-06 10:11:08 +01:00
parent a425b4230d
commit b079cfa846
1 changed files with 33 additions and 11 deletions
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44
lisp/window.el
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@ -509,11 +509,14 @@ child if WINDOW is a horizontal combination."
(window-left-child window)
(window-top-child window)))
(defun window-combinations (window &optional horizontal)
(defun window-combinations (window &optional horizontal ignore-fixed)
"Return largest number of windows vertically arranged within WINDOW.
WINDOW must be a valid window and defaults to the selected one.
If HORIZONTAL is non-nil, return the largest number of
windows horizontally arranged within WINDOW."
windows horizontally arranged within WINDOW.
Optional argument IGNORE-FIXED, if non-nil, means to ignore
fixed-size windows in the calculation."
(setq window (window-normalize-window window))
(cond
((window-live-p window)
@ -527,9 +530,10 @@ windows horizontally arranged within WINDOW."
(let ((child (window-child window))
(count 0))
(while child
(setq count
(+ (window-combinations child horizontal)
count))
(unless (and ignore-fixed (window-size-fixed-p child horizontal))
(setq count
(+ (window-combinations child horizontal ignore-fixed)
count)))
(setq child (window-right child)))
count))
(t
@ -538,9 +542,10 @@ windows horizontally arranged within WINDOW."
(let ((child (window-child window))
(count 1))
(while child
(setq count
(max (window-combinations child horizontal)
count))
(unless (and ignore-fixed (window-size-fixed-p child horizontal))
(setq count
(max (window-combinations child horizontal ignore-fixed)
count)))
(setq child (window-right child)))
count))))
@ -4905,6 +4910,24 @@ showing BUFFER-OR-NAME."
;; If a window doesn't show BUFFER, unrecord BUFFER in it.
(unrecord-window-buffer window buffer)))))
(defun window--combination-resizable (parent &optional horizontal)
"Return number of pixels recoverable from height of window PARENT.
PARENT must be a vertical (horizontal if HORIZONTAL is non-nil)
window combination. The return value is the sum of the pixel
heights of all non-fixed height child windows of PARENT divided
by their number plus 1. If HORIZONTAL is non-nil, return the sum
of the pixel widths of all non-fixed width child windows of
PARENT divided by their number plus 1."
(let ((sibling (window-child parent))
(number 0)
(size 0))
(while sibling
(unless (window-size-fixed-p sibling horizontal)
(setq number (1+ number))
(setq size (+ (window-size sibling horizontal t) size)))
(setq sibling (window-next-sibling sibling)))
(/ size (1+ number))))
(defun split-window (&optional window size side pixelwise)
"Make a new window adjacent to WINDOW.
WINDOW must be a valid window and defaults to the selected one.
@ -5042,8 +5065,7 @@ frame. The selected window is not changed by this function."
;; average size of a window in its combination.
(max (min (- parent-pixel-size
(window-min-size parent horizontal nil t))
(/ parent-pixel-size
(1+ (window-combinations parent horizontal))))
(window--combination-resizable parent horizontal))
(window-min-pixel-size))
;; Else try to give the new window half the size
;; of WINDOW (plus an eventual odd pixel).
@ -5128,7 +5150,7 @@ frame. The selected window is not changed by this function."
(pixel-size (/ (float new-pixel-size)
(if new-parent old-pixel-size parent-pixel-size)))
(new-parent 0.5)
(resize (/ 1.0 (1+ (window-combinations parent horizontal))))
(resize (/ 1.0 (1+ (window-combinations parent horizontal t))))
(t (/ (window-normal-size window horizontal) 2.0))))
(if resize