1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
;;; +tab-bar.el -*- lexical-binding: t; -*-
;;; Commentary:
;; Emacs 28 comes with an easy-to-use `tab-bar-format' option, but I still use
;; Emacs 27 on my Windows machine. Thus, the code in this file.
;;; Code:
(require 'tab-bar)
(defface +tab-bar-extra
'((t :inherit (tab-bar font-lock-comment-face)))
"Tab bar face for extra information, like the menu-bar and time."
:group 'basic-faces)
;; Common
(defun +tab-bar-misc-info ()
"Display `mode-line-misc-info', formatted for the tab-bar."
`((global menu-item ,(string-trim-right
(format-mode-line mode-line-misc-info))
ignore :help (discord-date-string))))
(defvar +tab-bar-show-original nil
"Original value of `tab-bar-show'.")
(defun +tab-bar-basename ()
"Generate the tab name from the basename of the buffer of the
selected window."
(let* ((tab-file-name (buffer-file-name (window-buffer
(minibuffer-selected-window)))))
(concat " "
(if tab-file-name
(file-name-nondirectory tab-file-name)
(+tab-bar-tab-name-truncated-left)))))
;;; FIXME this doesn't work...
;; (defvar +tab-bar-tab-min-width 8
;; "Minimum width of a tab on the tab bar.")
;; (defvar +tab-bar-tab-max-width 24
;; "Maximum width of a tab on the tab bar.")
;; (defun +tab-bar-fluid-calculate-width ()
;; "Calculate the width of each tab in the tab-bar."
;; (let* ((tab-bar-list (cdr (tab-bar-make-keymap-1)))
;; (tab-bar-avail-width (frame-width))
;; (tab-bar-tab-count (length (tab-bar-tabs)))
;; (tab-bar-close-button-char-width 1)
;; (tab-bar-add-tab-button-char-width 1)
;; (tab-bar-total-width
;; (length (mapconcat
;; (lambda (el)
;; (when-let ((str (car-safe (cdr-safe (cdr-safe el)))))
;; (substring-no-properties (eval str))))
;; tab-bar-list)))
;; (tab-bar-total-tab-width
;; (+ (* tab-bar-tab-count tab-bar-close-button-char-width)
;; tab-bar-add-tab-button-char-width
;; (length (mapconcat
;; (lambda (el)
;; (substring-no-properties (alist-get 'name el)))
;; (tab-bar-tabs)))))
;; (tab-bar-total-nontab-width (- tab-bar-total-width
;; tab-bar-total-tab-width)))
;; (min +tab-bar-tab-max-width
;; (max +tab-bar-tab-min-width
;; (/ (- tab-bar-avail-width
;; tab-bar-total-tab-width
;; tab-bar-total-nontab-width)
;; tab-bar-tab-count)))))
;; (defun +tab-bar-fluid-width ()
;; "Generate the tab name to fluidly fit in the given space."
;; (let* ((tab-file-name (buffer-file-name (window-buffer
;; (minibuffer-selected-window)))))
;; (format (format " %%s%%%ds" (+tab-bar-fluid-calculate-width))
;; (if tab-file-name
;; (file-name-nondirectory tab-file-name)
;; (+tab-bar-tab-name-truncated-left))
;; " ")))
(defun +tab-bar-tab-name-truncated-left ()
"Generate the tab name from the buffer of the selected window.
This is just like `tab-bar-tab-name-truncated', but truncates the
name to the left."
(let* ((tab-name (buffer-name (window-buffer (minibuffer-selected-window))))
(ellipsis (cond
(tab-bar-tab-name-ellipsis)
((char-displayable-p ?…) "…")
("...")))
(l-ell (length ellipsis))
(l-name (length tab-name)))
(if (< (length tab-name) tab-bar-tab-name-truncated-max)
tab-name
(propertize (concat
(when (> (+ l-name l-ell) tab-bar-tab-name-truncated-max)
ellipsis)
(truncate-string-to-width tab-name l-name
(max 0 (- l-name tab-bar-tab-name-truncated-max l-ell))))
'help-echo tab-name))))
;;; Menu bar
;; stole from https://github.com/emacs-mirror/emacs/blob/master/lisp/tab-bar.el
(defun +tab-bar-menu-bar (event)
"Pop up the same menu as displayed by the menu bar.
Used by `tab-bar-format-menu-bar'."
(interactive "e")
(let ((menu (make-sparse-keymap (propertize "Menu Bar" 'hide t))))
(run-hooks 'activate-menubar-hook 'menu-bar-update-hook)
(map-keymap (lambda (key binding)
(when (consp binding)
(define-key-after menu (vector key)
(copy-sequence binding))))
(menu-bar-keymap))
(popup-menu menu event)))
(defcustom +tab-bar-menu-bar-icon " Emacs "
"The string to use for the tab-bar menu icon."
:type 'string)
(defun +tab-bar-format-menu-bar ()
"Produce the Menu button for the tab bar that shows the menu bar."
`((menu-bar menu-item (propertize +tab-bar-menu-bar-icon 'face '+tab-bar-extra)
+tab-bar-menu-bar :help "Menu Bar")))
;;; Tab bar format tabs
(require 'el-patch)
(el-patch-feature tab-bar)
(with-eval-after-load 'tab-bar
(el-patch-defun tab-bar--format-tab (tab i)
"Format TAB using its index I and return the result as a keymap."
(append
(el-patch-remove
`((,(intern (format "sep-%i" i)) menu-item ,(tab-bar-separator) ignore)))
(cond
((eq (car tab) 'current-tab)
`((current-tab
menu-item
,(funcall tab-bar-tab-name-format-function tab i)
ignore
:help "Current tab")))
(t
`((,(intern (format "tab-%i" i))
menu-item
,(funcall tab-bar-tab-name-format-function tab i)
,(alist-get 'binding tab)
:help "Click to visit tab"))))
(when (alist-get 'close-binding tab)
`((,(if (eq (car tab) 'current-tab) 'C-current-tab (intern (format "C-tab-%i" i)))
menu-item ""
,(alist-get 'close-binding tab)))))))
;; Emacs 27
(defun +tab-bar-misc-info-27 (output &rest _)
"Display `mode-line-misc-info' in the `tab-bar' on Emacs 27.
This is :filter-return advice for `tab-bar-make-keymap-1'."
(let* ((reserve (length (format-mode-line mode-line-misc-info)))
(str (propertize " "
'display `(space :align-to (- right (- 0 right-margin)
,reserve)))))
(prog1 (append output
`((align-right menu-item ,str nil))
(+tab-bar-misc-info)))))
;; Emacs 28
(defvar +tab-bar-format-original nil
"Original value of `tab-bar-format'.")
(defun +tab-bar-misc-info-28 ()
"Display `mode-line-misc-info', right-aligned, on Emacs 28."
(append (unless (memq 'tab-bar-format-align-right tab-bar-format)
'(tab-bar-format-align-right))
'(+tab-bar-misc-info)))
(define-minor-mode +tab-bar-misc-info-mode
"Show the `mode-line-misc-info' in the `tab-bar'."
:lighter ""
:global t
(if +tab-bar-misc-info-mode
(progn ; Enable
(setq +tab-bar-show-original tab-bar-show)
(cond
((boundp 'tab-bar-format) ; Emacs 28
(setq +tab-bar-format-original tab-bar-format)
(unless (memq '+tab-bar-misc-info tab-bar-format)
(setq tab-bar-format
(append tab-bar-format (+tab-bar-misc-info-28)))))
((fboundp 'tab-bar-make-keymap-1) ; Emacs 27
(advice-add 'tab-bar-make-keymap-1 :filter-return
'+tab-bar-misc-info-27)))
(setq tab-bar-show t))
(progn ; Disable
(setq tab-bar-show +tab-bar-show-original)
(cond
((boundp 'tab-bar-format) ; Emacs 28
(setq tab-bar-format +tab-bar-format-original))
((fboundp 'tab-bar-make-keymap-1) ; Emacs 27
(advice-remove 'tab-bar-make-keymap-1 '+tab-bar-misc-info-27))))))
(provide '+tab-bar)
;;; +tab-bar.el ends here
|
