Source file bind.ml
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
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
open! Oxbow_core
open! Oxbow_ipc
open! Oxbow_state
open! Result.Syntax
type t =
{ mods : int32
; key : Types.Key.t
}
let install_defaults (wm : Wm.t) seat =
let modkey = wm.config.modkey in
let ctrl = Wire.Modifiers.ctrl in
let xkb_bindings =
Xkbcommon.Keysym.
[
modkey, K_Return, Command.Spawn "foot"
; modkey, K_q, Command.Window (Close (One Focused))
; modkey, K_Q, Command.Session Exit
; ( modkey
, K_j
, Command.Window (Focus_logical { dir = Next; warp = None; target = Focused }) )
; ( modkey
, K_k
, Command.Window (Focus_logical { dir = Prev; warp = None; target = Focused }) )
; modkey, K_l, Command.Tag (View_cycle_occupied Next)
; modkey, K_h, Command.Tag (View_cycle_occupied Prev)
; modkey, K_Tab, Command.Tag (View_cycle Next)
; modkey, K_ISO_Left_Tab, Command.Tag (View_cycle Prev)
; modkey, K_t, Command.Layout (Select { layout = Tiling; scope = Focused })
; modkey, K_s, Command.Layout (Select { layout = Scrolling; scope = Focused })
; modkey, K_f, Command.Layout (Select { layout = Floating; scope = Focused })
; modkey, K_v, Command.Window (Toggle_fullscreen Focused)
; modkey, K_space, Command.Window (Zoom { warp = None; target = Focused })
; modkey, K_J, Command.Window (Shift { dir = Next; target = Focused })
; modkey, K_K, Command.Window (Shift { dir = Prev; target = Focused })
; modkey, K_y, Command.Layout (Tiling (Select { scheme = Even; scope = Focused }))
; ( modkey
, K_i
, Command.Layout (Tiling (Select { scheme = Monocle; scope = Focused })) )
; modkey, K_z, Command.Layout (Scrolling (Select { align = Left; scope = Focused }))
; ( modkey
, K_x
, Command.Layout (Scrolling (Select { align = Centered; scope = Focused })) )
; ( modkey
, K_c
, Command.Layout (Scrolling (Select { align = Visible; scope = Focused })) )
; modkey, K_comma, Command.Window (Column_consume Focused)
; modkey, K_period, Command.Window (Column_release Focused)
; ( Int32.(logor modkey ctrl)
, K_l
, Command.Window (Column_move { dir = Next; target = Focused }) )
; ( Int32.(logor modkey ctrl)
, K_h
, Command.Window (Column_move { dir = Prev; target = Focused }) )
; ( modkey
, K_minus
, Command.Window (Column_width { delta = Rel (-0.1); target = Focused }) )
; ( modkey
, K_equal
, Command.Window (Column_width { delta = Rel 0.1; target = Focused }) )
; modkey, K_r, Command.Window (Column_width_cycle Focused)
; modkey, K_R, Command.Window (Column_width_default Focused)
]
in
let num_keys = Xkbcommon.Keysym.[ K_1; K_2; K_3; K_4; K_5; K_6; K_7; K_8; K_9 ] in
let num_bindings =
List.mapi
(fun i keysym ->
modkey, keysym, Command.Tag (View (Concrete (Tag.Set.singleton (i + 1)))))
num_keys
in
let xkb_bindings = num_bindings @ xkb_bindings in
let pointer_bindings =
Pointer_button.
[
modkey, Btn_left, Command.Window Move_drag
; modkey, Btn_right, Command.Window Resize_drag
]
in
List.iter (fun (m, k, a) -> ignore @@ Seat.bind wm seat m (Keysym k) a) xkb_bindings;
List.iter
(fun (m, b, a) -> ignore @@ Seat.bind wm seat m (Pointer b) a)
pointer_bindings
;;
let parse_modifier = function
| "Shift" -> Ok Wire.Modifiers.shift
| "Control" -> Ok Wire.Modifiers.ctrl
| "Mod1" | "Alt" -> Ok Wire.Modifiers.mod1
| "Mod3" -> Ok Wire.Modifiers.mod3
| "Mod4" | "Super" | "Logo" -> Ok Wire.Modifiers.mod4
| "Mod5" -> Ok Wire.Modifiers.mod5
| "None" -> Ok Wire.Modifiers.none
| s -> Error (Printf.sprintf "unrecognized modifier: %S" s)
;;
let parse_modifiers s =
String.split_on_char '+' s
|> List.map String.trim
|> List.fold_left
(fun acc part ->
let* mods = acc in
let+ m = parse_modifier part in
Int32.logor mods m)
(Ok 0l)
;;
(** [parse_keysym name] is the keysym represented by [name]. See:
- https://github.com/xkbcommon/libxkbcommon/blob/master/include/xkbcommon/xkbcommon-keysyms.h
- https://github.com/xkbcommon/libxkbcommon/blob/master/include/xkbcommon/xkbcommon.h
(check the comments for [xkb_keysym_from_name] and [xkb_keysym_t].)
TL;DR to get the keysym [XKB_KEY_space] use everything after [XKB_KEY_]:
- {b space}: [XKB_KEY_space]
- {b plus}: [XKB_KEY_plus] *)
let parse_keysym s =
match Xkbcommon.Keysym.from_name ~case_insensitive:true s with
| Xkbcommon.Keysym.K_NoSymbol -> Error (Printf.sprintf "unrecognized keysym name: %S" s)
| keysym -> Ok keysym
;;
(** [parse_button s] maps recognized button strings to [Pointer_button.t]
representations. Recognized strings include:
- {b Btn_0}
- {b Btn_1}
- {b Btn_2}
- {b Btn_3}
- {b Btn_4}
- {b Btn_5}
- {b Btn_6}
- {b Btn_7}
- {b Btn_8}
- {b Btn_9}
- {b Btn_left}
- {b Btn_right}
- {b Btn_middle}
- {b Btn_side}
- {b Btn_extra}
- {b Btn_forward}
- {b Btn_back}
- {b Btn_task}
Any other string returns [Error "unrecognized"]. *)
let parse_button = Pointer_button.of_string
(** [parse s] is the [{mods; key}] represented by s. [s] is a string of zero or
more modifiers, and a keysym or button combined with '+':
- {b Super+space}
- {b Super+Control+Btn_left}
- {b plus}|{b Btn_middle}
See [parse_modifiers], [parse_keysym], and [parse_button] for more details. *)
let parse s =
let parts = String.split_on_char '+' s |> List.map String.trim in
let rec aux mods = function
| [ x ] ->
(match parse_button x with
| Error _ ->
let+ keysym = parse_keysym x in
{ mods; key = Keysym keysym }
| Ok button -> Ok { mods; key = Pointer button })
| x :: xs ->
let* m = parse_modifier x in
aux (Int32.logor mods m) xs
| [] -> Error (Printf.sprintf "internal error, got no parts: %S" s)
in
aux 0l parts
;;
(** [format_modifiers mods] is the modifier names set in [mods], in the
canonical order Super, Alt, Control, Shift, Mod3, Mod5. Empty when [mods] is
[0l]. *)
let format_modifiers mods =
let open Wire in
List.filter_map
(fun (m, r) -> if Int32.logand m mods <> 0l then Some r else None)
[ Modifiers.mod4, "Super"
; Modifiers.mod1, "Alt"
; Modifiers.ctrl, "Control"
; Modifiers.shift, "Shift"
; Modifiers.mod3, "Mod3"
; Modifiers.mod5, "Mod5"
]
;;
(** [format_keybind mods key] is the keybind string for [mods] and [key]: the
inverse of [parse]. [parse (format_keybind mods key)] is [Ok { mods; key }]. *)
let format_keybind mods (key : Types.Key.t) =
let key_name =
match key with
| Keysym keysym -> Xkbcommon.Keysym.get_name keysym
| Pointer button -> Pointer_button.to_string button
in
String.concat "+" (format_modifiers mods @ [ key_name ])
;;
let list (wm : Wm.t) (seat : Seat.t) ~all =
let entry mode keybind command =
`Assoc
[ "mode", `String (Mode.to_string mode)
; "keybind", `String keybind
; "command", Command.yojson_of_t command
]
in
let seat_json (s : Seat.t) =
let bindings =
List.concat_map
(fun mode ->
List.filter_map
(fun (xkb : Seat.Xkb_binding.t) ->
if Mode.equal mode xkb.mode
then
Some
(entry mode (format_keybind xkb.mods (Keysym xkb.keysym)) xkb.command)
else None)
s.xkb_bindings
@ List.filter_map
(fun (p : Seat.Pointer_binding.t) ->
if Mode.equal mode p.mode
then
Some (entry mode (format_keybind p.mods (Pointer p.button)) p.command)
else None)
s.pointer_bindings)
wm.config.modes
in
`Assoc
[ ( "seat"
, match s.name with
| Some n -> `String n
| None -> `Null )
; "mode", `String (Mode.to_string s.mode)
; "bindings", `List bindings
]
in
if all then `List (List.map seat_json wm.seats) else seat_json seat
;;
let handle (wm : Wm.t) seat (keymap : Keymap.t) =
let resolve_mode = function
| None -> Ok None
| Some m ->
let+ mode = Mode.resolve m ~declared:wm.config.modes in
Some mode
in
match keymap with
| Bind bind ->
let* { mods; key } = parse bind.keybind in
let+ mode = resolve_mode bind.mode in
if Seat.bind wm seat ?mode mods key bind.command
then Some (`String (Printf.sprintf "overwrote existing binding for %S" bind.keybind))
else None
| Unbind bind ->
let* { mods; key } = parse bind.keybind in
let* mode = resolve_mode bind.mode in
if Seat.unbind seat ?mode mods key
then Ok None
else Error (Printf.sprintf "no binding for %S" bind.keybind)
;;