about summary refs log tree commit diff
path: root/exwm-floating.el
blob: a67bc1977ed7206c66aaeefe041f73ef1ee5a37f (plain) (blame)
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
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
;;; exwm-floating.el --- Floating Module for EXWM  -*- lexical-binding: t -*-

;; Copyright (C) 2015-2016 Free Software Foundation, Inc.

;; Author: Chris Feng <chris.w.feng@gmail.com>

;; This file is part of GNU Emacs.

;; 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 3 of the License, or
;; (at your option) any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.

;;; Commentary:

;; This module deals with the conversion between floating and non-floating
;; states and implements moving/resizing operations on floating windows.

;;; Code:

(require 'xcb-cursor)
(require 'exwm-core)

(defvar exwm-floating-border-width 1 "Border width of the floating window.")
(defvar exwm-floating-border-color "navy"
  "Border color of the floating window.")

(defvar exwm-floating-setup-hook nil
  "Normal hook run when a window has been made floating.")
(defvar exwm-floating-exit-hook nil
  "Normal hook run when a window has exited floating state.")

;; Cursors for moving/resizing a window
(defvar exwm-floating--cursor-move nil)
(defvar exwm-floating--cursor-top-left nil)
(defvar exwm-floating--cursor-top nil)
(defvar exwm-floating--cursor-top-right nil)
(defvar exwm-floating--cursor-right nil)
(defvar exwm-floating--cursor-bottom-right nil)
(defvar exwm-floating--cursor-bottom nil)
(defvar exwm-floating--cursor-bottom-left nil)
(defvar exwm-floating--cursor-left nil)

(defvar exwm-workspace--current)
(defvar exwm-workspace--list)
(defvar exwm-workspace-current-index)
(defvar exwm-workspace--switch-history-outdated)

(declare-function exwm-layout--refresh "exwm-layout.el")
(declare-function exwm-layout--show "exwm-layout.el")

(defun exwm-floating--set-floating (id)
  "Make window ID floating."
  (let ((window (get-buffer-window (exwm--id->buffer id))))
    (when window                        ;window in non-floating state
      (set-window-buffer window (other-buffer)))) ;hide it first
  (let* ((original-frame exwm-workspace--current)
         ;; Create new frame
         (frame (with-current-buffer
                    (or (get-buffer "*scratch*")
                        (progn
                          (set-buffer-major-mode
                           (get-buffer-create "*scratch*"))
                          (get-buffer "*scratch*")))
                  (make-frame
                   `((minibuffer . nil) ;use the default minibuffer.
                     (background-color . ,exwm-floating-border-color)
                     (internal-border-width . ,exwm-floating-border-width)
                     (left . 10000)
                     (top . 10000)
                     (width . ,window-min-width)
                     (height . ,window-min-height)
                     (unsplittable . t))))) ;and fix the size later
         (outer-id (string-to-number (frame-parameter frame 'outer-window-id)))
         (container (with-current-buffer (exwm--id->buffer id)
                      exwm--container))
         (frame-container (xcb:generate-id exwm--connection))
         (window (frame-first-window frame)) ;and it's the only window
         (x (slot-value exwm--geometry 'x))
         (y (slot-value exwm--geometry 'y))
         (width (slot-value exwm--geometry 'width))
         (height (slot-value exwm--geometry 'height))
         (frame-geometry (frame-parameter original-frame 'exwm-geometry)))
    (exwm--log "Floating geometry (original, absolute): %dx%d%+d%+d"
               width height x y)
    (when frame-geometry
      (setq x (- x (slot-value frame-geometry 'x))
            y (- y (slot-value frame-geometry 'y))))
    (exwm--log "Floating geometry (original, relative): %dx%d%+d%+d"
               width height x y)
    ;; Save frame parameters.
    (set-frame-parameter frame 'exwm-outer-id outer-id)
    (set-frame-parameter frame 'exwm-container frame-container)
    ;; Fix illegal parameters
    ;; FIXME: check normal hints restrictions
    (let* ((display-width (frame-pixel-width original-frame))
           (display-height (- (frame-pixel-height original-frame)
                              (if (exwm-workspace--minibuffer-own-frame-p)
                                  0
                                (window-pixel-height (minibuffer-window
                                                      original-frame)))
                              (* 2 (window-mode-line-height))
                              (window-header-line-height window)
                              (* 2 exwm-floating-border-width)))
           (display-height (* 2 (/ display-height 2)))) ;round to even
      (if (> width display-width)
          ;; Too wide
          (progn (setq x 0
                       width display-width))
        ;; Invalid width
        (when (= 0 width) (setq width (/ display-width 2)))
        ;; Make sure at least half of the window is visible
        (when (or (> (+ x (/ width 2)) display-width) (> 0 (+ x (/ width 2))))
          (setq x (/ (- display-width width) 2))))
      (if (> height display-height)
          ;; Too tall
          (setq y 0
                height display-height)
        ;; Invalid height
        (when (= 0 height) (setq height (/ display-height 2)))
        ;; Make sure at least half of the window is visible
        (when (or (> (+ y (/ height 2)) display-height)
                  (> 0 (+ y (/ height 2))))
          (setq y (/ (- display-height height) 2))))
      ;; Center floating windows
      (when (and (= x 0) (= y 0))
        (let ((buffer (exwm--id->buffer exwm-transient-for))
              window edges)
          (when (and buffer (setq window (get-buffer-window buffer)))
            (setq edges (window-inside-absolute-pixel-edges window))
            (unless (and (<= width (- (elt edges 2) (elt edges 0)))
                         (<= height (- (elt edges 3) (elt edges 1))))
              (setq edges nil)))
          (if edges
              ;; Put at the center of leading window
              (setq x (/ (- (elt edges 2) (elt edges 0) width) 2)
                    y (/ (- (elt edges 3) (elt edges 1) height) 2))
            ;; Put at the center of screen
            (setq x (/ (- display-width width) 2)
                  y (/ (- display-height height) 2))))))
    (exwm--log "Floating geometry (corrected): %dx%d%+d%+d" width height x y)
    ;; Fit frame to client
    ;; It seems we have to make the frame invisible in order to resize it
    ;; timely.
    ;; The frame will be made visible by `select-frame-set-input-focus'.
    (make-frame-invisible frame)
    (let* ((edges (window-inside-pixel-edges window))
           (frame-width (+ width (- (frame-pixel-width frame)
                                    (- (elt edges 2) (elt edges 0)))))
           (frame-height (+ height (- (frame-pixel-height frame)
                                      (- (elt edges 3) (elt edges 1))))))
      (set-frame-size frame frame-width frame-height t)
      ;; Create the frame container as the parent of the frame and
      ;; a child of the X window container.
      (xcb:+request exwm--connection
          (make-instance 'xcb:CreateWindow
                         :depth 0 :wid frame-container
                         :parent container
                         :x 0 :y 0 :width width :height height :border-width 0
                         :class xcb:WindowClass:CopyFromParent
                         :visual 0      ;CopyFromParent
                         :value-mask xcb:CW:OverrideRedirect
                         :override-redirect 1))
      ;; Put it at bottom.
      (xcb:+request exwm--connection
          (make-instance 'xcb:ConfigureWindow
                         :window frame-container
                         :value-mask xcb:ConfigWindow:StackMode
                         :stack-mode xcb:StackMode:Below))
      ;; Map it.
      (xcb:+request exwm--connection
          (make-instance 'xcb:MapWindow :window frame-container))
      (exwm--debug
       (xcb:+request exwm--connection
           (make-instance 'xcb:ewmh:set-_NET_WM_NAME
                          :window frame-container
                          :data
                          (format "floating frame container for 0x%x" id)))))
    ;; Reparent this frame to its container.
    (xcb:+request exwm--connection
        (make-instance 'xcb:ReparentWindow
                       :window outer-id :parent frame-container :x 0 :y 0))
    ;; Place the X window container.
    (xcb:+request exwm--connection
        (make-instance 'xcb:ConfigureWindow
                       :window container
                       :value-mask (eval-when-compile
                                     (logior xcb:ConfigWindow:X
                                             xcb:ConfigWindow:Y))
                       :x (- x exwm-floating-border-width)
                       :y (- y exwm-floating-border-width)))
    (xcb:flush exwm--connection)
    ;; Set window/buffer
    (with-current-buffer (exwm--id->buffer id)
      (setq window-size-fixed exwm--fixed-size
            exwm--frame original-frame
            exwm--floating-frame frame)
      ;; Do the refresh manually.
      (remove-hook 'window-configuration-change-hook #'exwm-layout--refresh)
      (set-window-buffer window (current-buffer)) ;this changes current buffer
      (add-hook 'window-configuration-change-hook #'exwm-layout--refresh)
      (set-window-dedicated-p window t)
      (exwm-layout--show id window))
    (with-selected-frame exwm-workspace--current
      (exwm-layout--refresh))
    (select-frame-set-input-focus frame))
  (run-hooks 'exwm-floating-setup-hook)
  ;; Redraw the frame.
  (redisplay))

(defun exwm-floating--unset-floating (id)
  "Make window ID non-floating."
  (let ((buffer (exwm--id->buffer id)))
    (with-current-buffer buffer
      (when exwm--floating-frame
        ;; The X window is already mapped.
        ;; Unmap the container to prevent flickering.
        (xcb:+request exwm--connection
            (make-instance 'xcb:UnmapWindow :window exwm--container))
        (xcb:flush exwm--connection)
        ;; Unmap the X window.
        (xcb:+request exwm--connection
            (make-instance 'xcb:ChangeWindowAttributes
                           :window id :value-mask xcb:CW:EventMask
                           :event-mask xcb:EventMask:NoEvent))
        (xcb:+request exwm--connection
            (make-instance 'xcb:UnmapWindow :window id))
        (xcb:+request exwm--connection
            (make-instance 'xcb:ChangeWindowAttributes
                           :window id :value-mask xcb:CW:EventMask
                           :event-mask exwm--client-event-mask))
        ;; Reparent the floating frame back to the root window.
        (let ((frame-id (frame-parameter exwm--floating-frame 'exwm-outer-id))
              (frame-container (frame-parameter exwm--floating-frame
                                                'exwm-container)))
          (xcb:+request exwm--connection
              (make-instance 'xcb:UnmapWindow :window frame-id))
          (xcb:+request exwm--connection
              (make-instance 'xcb:ReparentWindow
                             :window frame-id
                             :parent exwm--root
                             :x 0 :y 0))
          ;; Also destroy its container.
          (xcb:+request exwm--connection
              (make-instance 'xcb:DestroyWindow :window frame-container))))
      ;; Put the X window container just above the Emacs frame container
      ;; (the stacking order won't change from now on).
      (xcb:+request exwm--connection
          (make-instance 'xcb:ConfigureWindow
                         :window exwm--container
                         :value-mask (logior xcb:ConfigWindow:Sibling
                                             xcb:ConfigWindow:StackMode)
                         :sibling (frame-parameter exwm-workspace--current
                                                   'exwm-container)
                         :stack-mode xcb:StackMode:Above)))
    (xcb:flush exwm--connection)
    (with-current-buffer buffer
      (when exwm--floating-frame        ;from floating to non-floating
        (set-window-dedicated-p (frame-first-window exwm--floating-frame) nil)
        (delete-frame exwm--floating-frame))) ;remove the floating frame
    (with-current-buffer buffer
      (setq window-size-fixed nil
            exwm--floating-frame nil
            exwm--frame exwm-workspace--current))
    (let ((window (frame-selected-window exwm-workspace--current)))
      (set-window-buffer window buffer)
      (select-window window)))
  (run-hooks 'exwm-floating-exit-hook))

;;;###autoload
(defun exwm-floating-toggle-floating ()
  "Toggle the current window between floating and non-floating states."
  (interactive)
  (with-current-buffer (window-buffer)
    (if exwm--floating-frame
        (exwm-floating--unset-floating exwm--id)
      (exwm-floating--set-floating exwm--id))))

;;;###autoload
(defun exwm-floating-hide ()
  "Hide the current floating X window (which would show again when selected)."
  (interactive)
  (when (and (eq major-mode 'exwm-mode)
             exwm--floating-frame)
    ;; Put this floating X window at bottom.
    (xcb:+request exwm--connection
        (make-instance 'xcb:ConfigureWindow
                       :window exwm--container
                       :value-mask xcb:ConfigWindow:StackMode
                       :stack-mode xcb:StackMode:Below))
    ;; FIXME: Should it be put into iconic state?
    (xcb:flush exwm--connection)
    (select-frame-set-input-focus exwm-workspace--current)))

(define-obsolete-function-alias 'exwm-floating-hide-mode-line
  'exwm-layout-hide-mode-line "25.1" "Hide mode-line of a floating frame.")
(define-obsolete-function-alias 'exwm-floating-show-mode-line
  'exwm-layout-show-mode-line "25.1" "Show mode-line of a floating frame.")

(defvar exwm-floating--moveresize-calculate nil
  "Calculate move/resize parameters [buffer event-mask x y width height].")

(defun exwm-floating--start-moveresize (id &optional type)
  "Start move/resize."
  (let ((buffer-or-id (or (exwm--id->buffer id) id))
        frame container-or-id x y width height cursor)
    (if (bufferp buffer-or-id)
        ;; Managed.
        (with-current-buffer buffer-or-id
          (setq frame exwm--floating-frame
                container-or-id exwm--container))
      ;; Unmanaged.
      (setq container-or-id id))
    (when (and container-or-id
               ;; Test if the pointer can be grabbed
               (= xcb:GrabStatus:Success
                  (slot-value
                   (xcb:+request-unchecked+reply exwm--connection
                       (make-instance 'xcb:GrabPointer
                                      :owner-events 0
                                      :grab-window container-or-id
                                      :event-mask xcb:EventMask:NoEvent
                                      :pointer-mode xcb:GrabMode:Async
                                      :keyboard-mode xcb:GrabMode:Async
                                      :confine-to xcb:Window:None
                                      :cursor xcb:Cursor:None
                                      :time xcb:Time:CurrentTime))
                   'status)))
      (with-slots (root-x root-y win-x win-y)
          (xcb:+request-unchecked+reply exwm--connection
              (make-instance 'xcb:QueryPointer :window id))
        (if (not (bufferp buffer-or-id))
            ;; Unmanaged.
            (unless (eq type xcb:ewmh:_NET_WM_MOVERESIZE_MOVE)
              (with-slots ((width* width)
                           (height* height))
                  (xcb:+request-unchecked+reply exwm--connection
                      (make-instance 'xcb:GetGeometry :drawable id))
                (setq width width*
                      height height*)))
          ;; Managed.
          (select-window (frame-first-window frame)) ;transfer input focus
          (setq width (frame-pixel-width frame)
                height (frame-pixel-height frame))
          (unless type
            ;; Determine the resize type according to the pointer position
            ;; Clicking the center 1/3 part to resize has not effect
            (setq x (/ (* 3 win-x) (float width))
                  y (/ (* 3 win-y) (float height))
                  type (cond ((and (< x 1) (< y 1))
                              xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOPLEFT)
                             ((and (> x 2) (< y 1))
                              xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOPRIGHT)
                             ((and (> x 2) (> y 2))
                              xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT)
                             ((and (< x 1) (> y 2))
                              xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT)
                             ((> x 2) xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_RIGHT)
                             ((> y 2) xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOM)
                             ((< x 1) xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_LEFT)
                             ((< y 1) xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOP)))))
        (if (not type)
            (exwm-floating--stop-moveresize)
          (cond ((= type xcb:ewmh:_NET_WM_MOVERESIZE_MOVE)
                 (setq cursor exwm-floating--cursor-move
                       exwm-floating--moveresize-calculate
                       `(lambda (x y)
                          (vector ,buffer-or-id
                                  ,(eval-when-compile
                                     (logior xcb:ConfigWindow:X
                                             xcb:ConfigWindow:Y))
                                  (- x ,win-x) (- y ,win-y) 0 0))))
                ((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOPLEFT)
                 (setq cursor exwm-floating--cursor-top-left
                       exwm-floating--moveresize-calculate
                       `(lambda (x y)
                          (vector ,buffer-or-id
                                  ,(eval-when-compile
                                     (logior xcb:ConfigWindow:X
                                             xcb:ConfigWindow:Y
                                             xcb:ConfigWindow:Width
                                             xcb:ConfigWindow:Height))
                                  (- x ,win-x) (- y ,win-y)
                                  (- ,(+ root-x width) x)
                                  (- ,(+ root-y height) y)))))
                ((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOP)
                 (setq cursor exwm-floating--cursor-top
                       exwm-floating--moveresize-calculate
                       `(lambda (x y)
                          (vector ,buffer-or-id
                                  ,(eval-when-compile
                                     (logior xcb:ConfigWindow:Y
                                             xcb:ConfigWindow:Height))
                                  0 (- y ,win-y) 0 (- ,(+ root-y height) y)))))
                ((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_TOPRIGHT)
                 (setq cursor exwm-floating--cursor-top-right
                       exwm-floating--moveresize-calculate
                       `(lambda (x y)
                          (vector ,buffer-or-id
                                  ,(eval-when-compile
                                     (logior xcb:ConfigWindow:Y
                                             xcb:ConfigWindow:Width
                                             xcb:ConfigWindow:Height))
                                  0 (- y ,win-y) (- x ,(- root-x width))
                                  (- ,(+ root-y height) y)))))
                ((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_RIGHT)
                 (setq cursor exwm-floating--cursor-right
                       exwm-floating--moveresize-calculate
                       `(lambda (x y)
                          (vector ,buffer-or-id
                                  ,xcb:ConfigWindow:Width
                                  0 0 (- x ,(- root-x width)) 0))))
                ((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT)
                 (setq cursor exwm-floating--cursor-bottom-right
                       exwm-floating--moveresize-calculate
                       `(lambda (x y)
                          (vector ,buffer-or-id
                                  ,(eval-when-compile
                                     (logior xcb:ConfigWindow:Width
                                             xcb:ConfigWindow:Height))
                                  0 0 (- x ,(- root-x width))
                                  (- y ,(- root-y height))))))
                ((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOM)
                 (setq cursor exwm-floating--cursor-bottom
                       exwm-floating--moveresize-calculate
                       `(lambda (x y)
                          (vector ,buffer-or-id
                                  ,xcb:ConfigWindow:Height
                                  0 0 0 (- y ,(- root-y height))))))
                ((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT)
                 (setq cursor exwm-floating--cursor-bottom-left
                       exwm-floating--moveresize-calculate
                       `(lambda (x y)
                          (vector ,buffer-or-id
                                  ,(eval-when-compile
                                     (logior xcb:ConfigWindow:X
                                             xcb:ConfigWindow:Width
                                             xcb:ConfigWindow:Height))
                                  (- x ,win-x)
                                  0
                                  (- ,(+ root-x width) x)
                                  (- y ,(- root-y height))))))
                ((= type xcb:ewmh:_NET_WM_MOVERESIZE_SIZE_LEFT)
                 (setq cursor exwm-floating--cursor-left
                       exwm-floating--moveresize-calculate
                       `(lambda (x y)
                          (vector ,buffer-or-id
                                  ,(eval-when-compile
                                     (logior xcb:ConfigWindow:X
                                             xcb:ConfigWindow:Width))
                                  (- x ,win-x) 0 (- ,(+ root-x width) x) 0)))))
          ;; Select events and change cursor (should always succeed)
          (xcb:+request-unchecked+reply exwm--connection
              (make-instance 'xcb:GrabPointer
                             :owner-events 0 :grab-window container-or-id
                             :event-mask (eval-when-compile
                                           (logior xcb:EventMask:ButtonRelease
                                                   xcb:EventMask:ButtonMotion))
                             :pointer-mode xcb:GrabMode:Async
                             :keyboard-mode xcb:GrabMode:Async
                             :confine-to xcb:Window:None
                             :cursor cursor
                             :time xcb:Time:CurrentTime)))))))

(defun exwm-floating--stop-moveresize (&rest _args)
  "Stop move/resize."
  (xcb:+request exwm--connection
      (make-instance 'xcb:UngrabPointer :time xcb:Time:CurrentTime))
  ;; Inform the X window that its absolute position is changed
  (when (and exwm-floating--moveresize-calculate
             ;; Unmanaged.
             (eq major-mode 'exwm-mode))
    (let ((edges (window-inside-absolute-pixel-edges (frame-selected-window)))
          (id (with-current-buffer (window-buffer (frame-selected-window))
                exwm--id)))
      (xcb:+request exwm--connection
          (make-instance 'xcb:SendEvent
                         :propagate 0 :destination id
                         :event-mask xcb:EventMask:StructureNotify
                         :event (xcb:marshal
                                 (make-instance 'xcb:ConfigureNotify
                                                :event id :window id
                                                :above-sibling xcb:Window:None
                                                :x (elt edges 0)
                                                :y (elt edges 1)
                                                :width (- (elt edges 2)
                                                          (elt edges 0))
                                                :height (- (elt edges 3)
                                                           (elt edges 1))
                                                :border-width 0
                                                :override-redirect 0)
                                 exwm--connection)))))
  (xcb:flush exwm--connection)
  (setq exwm-floating--moveresize-calculate nil))

(defun exwm-floating--do-moveresize (data _synthetic)
  "Perform move/resize."
  (when exwm-floating--moveresize-calculate
    (let ((obj (make-instance 'xcb:MotionNotify))
          (geometry (frame-parameter exwm-workspace--current 'exwm-geometry))
          (frame-x 0)
          (frame-y 0)
          result value-mask width height buffer-or-id container-or-id)
      (when geometry
        (setq frame-x (slot-value geometry 'x)
              frame-y (slot-value geometry 'y)))
      (xcb:unmarshal obj data)
      (setq result (funcall exwm-floating--moveresize-calculate
                            (slot-value obj 'root-x) (slot-value obj 'root-y))
            value-mask (logand (aref result 1)
                               (eval-when-compile
                                 (logior xcb:ConfigWindow:Width
                                         xcb:ConfigWindow:Height)))
            width (aref result 4)
            height (aref result 5))
      (setq buffer-or-id (aref result 0))
      (setq container-or-id
            (if (bufferp buffer-or-id)
                ;; Managed.
                (with-current-buffer buffer-or-id exwm--container)
              ;; Unmanaged.
              buffer-or-id))
      (xcb:+request exwm--connection
          (make-instance 'xcb:ConfigureWindow
                         :window container-or-id
                         :value-mask (aref result 1)
                         :x (- (aref result 2) frame-x)
                         :y (- (aref result 3) frame-y)
                         :width width
                         :height height))
      (when (bufferp buffer-or-id)
        ;; Managed.
        (with-current-buffer buffer-or-id
          (xcb:+request exwm--connection
              (make-instance 'xcb:ConfigureWindow
                             :window (frame-parameter exwm--floating-frame
                                                      'exwm-container)
                             :value-mask value-mask
                             :width width
                             :height height))
          (xcb:+request exwm--connection
              (make-instance 'xcb:ConfigureWindow
                             :window (frame-parameter exwm--floating-frame
                                                      'exwm-outer-id)
                             :value-mask value-mask
                             :width width
                             :height height))))
      (xcb:flush exwm--connection))))

(defun exwm-floating-move (&optional delta-x delta-y)
  "Move a floating window right by DELTA-X pixels and down by DELTA-Y pixels.

Both DELTA-X and DELTA-Y default to 1.  This command should be bound locally."
  (unless (and (eq major-mode 'exwm-mode) exwm--floating-frame)
    (user-error "[EXWM] `exwm-floating-move' is only for floating X windows"))
  (unless delta-x (setq delta-x 1))
  (unless delta-y (setq delta-y 1))
  (unless (and (= 0 delta-x) (= 0 delta-y))
    (let* ((geometry (xcb:+request-unchecked+reply exwm--connection
                         (make-instance 'xcb:GetGeometry
                                        :drawable exwm--container)))
           (edges (window-inside-absolute-pixel-edges)))
      (xcb:+request exwm--connection
          (make-instance 'xcb:ConfigureWindow
                         :window exwm--container
                         :value-mask (eval-when-compile
                                       (logior xcb:ConfigWindow:X
                                               xcb:ConfigWindow:Y))
                         :x (+ (slot-value geometry 'x) delta-x)
                         :y (+ (slot-value geometry 'y) delta-y)))
      ;; Inform the X window that its absolute position is changed
      (xcb:+request exwm--connection
          (make-instance 'xcb:SendEvent
                         :propagate 0 :destination exwm--id
                         :event-mask xcb:EventMask:StructureNotify
                         :event (xcb:marshal
                                 (make-instance 'xcb:ConfigureNotify
                                                :event exwm--id
                                                :window exwm--id
                                                :above-sibling xcb:Window:None
                                                :x (+ (elt edges 0) delta-x)
                                                :y (+ (elt edges 1) delta-y)
                                                :width (- (elt edges 2)
                                                          (elt edges 0))
                                                :height (- (elt edges 3)
                                                           (elt edges 1))
                                                :border-width 0
                                                :override-redirect 0)
                                 exwm--connection))))
    (xcb:flush exwm--connection)))

(defun exwm-floating--init ()
  "Initialize floating module."
  ;; Initialize cursors for moving/resizing a window
  (xcb:cursor:init exwm--connection)
  (setq exwm-floating--cursor-move
        (xcb:cursor:load-cursor exwm--connection "fleur")
        exwm-floating--cursor-top-left
        (xcb:cursor:load-cursor exwm--connection "top_left_corner")
        exwm-floating--cursor-top
        (xcb:cursor:load-cursor exwm--connection "top_side")
        exwm-floating--cursor-top-right
        (xcb:cursor:load-cursor exwm--connection "top_right_corner")
        exwm-floating--cursor-right
        (xcb:cursor:load-cursor exwm--connection "right_side")
        exwm-floating--cursor-bottom-right
        (xcb:cursor:load-cursor exwm--connection "bottom_right_corner")
        exwm-floating--cursor-bottom
        (xcb:cursor:load-cursor exwm--connection "bottom_side")
        exwm-floating--cursor-bottom-left
        (xcb:cursor:load-cursor exwm--connection "bottom_left_corner")
        exwm-floating--cursor-left
        (xcb:cursor:load-cursor exwm--connection "left_side")))



(provide 'exwm-floating)

;;; exwm-floating.el ends here