Repository navigation
Expand file tree
/
Copy pathanimate.lua
More file actions
2149 lines (1876 loc) · 81.6 KB
/
Copy pathanimate.lua
File metadata and controls
2149 lines (1876 loc) · 81.6 KB
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
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
--- *mini.animate* Animate common Neovim actions
--- *MiniAnimate*
---
--- MIT License Copyright (c) 2022 Evgeni Chasnovski
---
--- ==============================================================================
---
--- Features:
--- - Works out of the box with a single `require('mini.animate').setup()`.
--- No extra mappings or commands needed.
---
--- - Animate cursor movement inside same buffer by showing customizable path.
--- See |MiniAnimate.config.cursor| for more details.
---
--- - Animate scrolling with a series of subscrolls ("smooth scrolling").
--- See |MiniAnimate.config.scroll| for more details.
---
--- - Animate window resize by gradually changing sizes of all windows.
--- See |MiniAnimate.config.resize| for more details.
---
--- - Animate window open/close with visually updating floating window.
--- See |MiniAnimate.config.open| and |MiniAnimate.config.close| for more details.
---
--- - Timings for all actions can be customized independently.
--- See |MiniAnimate-timing| for more details.
---
--- - Action animations can be enabled/disabled independently.
---
--- - All animations are asynchronous/non-blocking and trigger a targeted event
--- which can be used to perform actions after animation is done.
---
--- - |MiniAnimate.animate()| function which can be used to perform own animations.
---
--- Notes:
--- - Cursor movement is animated inside same window and buffer, not as cursor
--- moves across the screen.
---
--- - Scroll and resize animations are done with "side effects": they actually
--- change the state of what is animated (window view and sizes
--- respectively). This has a downside of possibly needing extra work to
--- account for asynchronous nature of animation (like adjusting certain
--- mappings, etc.). See |MiniAnimate.config.scroll| and
--- |MiniAnimate.config.resize| for more details.
---
--- - Although all animations work in all supported versions of Neovim, scroll
--- and resize animations have best experience with Neovim>=0.9. This is due
--- to updated implementation of |WinScrolled| event.
---
--- # Setup ~
---
--- This module needs a setup with `require('mini.animate').setup({})` (replace
--- `{}` with your `config` table). It will create global Lua table `MiniAnimate`
--- which you can use for scripting or manually (with `:lua MiniAnimate.*`).
---
--- See |MiniAnimate.config| for available config settings.
---
--- You can override runtime config settings (like `config.modifiers`) locally
--- to buffer inside `vim.b.minianimate_config` which should have same structure
--- as `MiniAnimate.config`. See |mini.nvim-buffer-local-config| for more details.
---
--- # Comparisons ~
---
--- - Neovide:
--- - Neovide is a standalone GUI which has more control over its animations.
--- While 'mini.animate' works inside terminal emulator (with all its
--- limitations, like lack of pixel-size control over animations).
--- - Neovide animates cursor movement across screen, while 'mini.animate' -
--- as it moves across same buffer.
--- - Neovide has fixed number of animation effects per action, while
--- 'mini.animate' is fully customizable.
--- - 'mini.animate' implements animations for window open/close, while
--- Neovide does not.
--- - 'edluffy/specs.nvim':
--- - 'mini.animate' approaches cursor movement visualization via
--- customizable path function (uses extmarks), while 'specs.nvim' can
--- customize within its own visual effects (shading and floating
--- window resizing).
--- - 'karb94/neoscroll.nvim':
--- - Scroll animation is triggered only inside dedicated mappings.
--- 'mini.animate' animates scroll resulting from any window view change.
--- - 'anuvyklack/windows.nvim':
--- - Resize animation is done only within custom commands and mappings,
--- while 'mini.animate' animates any resize out of the box (works
--- similarly to 'windows.nvim' in Neovim>=0.9 with appropriate
--- 'winheight' / 'winwidth' and 'winminheight' / 'winminwidth').
---
--- # Highlight groups ~
---
--- * `MiniAnimateCursor` - highlight of cursor during its animated movement.
--- * `MiniAnimateNormalFloat` - highlight of floating window for `open` and
--- `close` animations.
---
--- To change any highlight group, modify it directly with |:highlight|.
---
--- # Disabling ~
---
--- To disable, set `vim.g.minianimate_disable` (globally) or
--- `vim.b.minianimate_disable` (for a buffer) to `true`. Considering high
--- number of different scenarios and customization intentions, writing exact
--- rules for disabling module's functionality is left to user. See
--- |mini.nvim-disabling-recipes| for common recipes.
---@diagnostic disable:undefined-field
-- Module definition ==========================================================
local MiniAnimate = {}
local H = {}
--- Module setup
---
---@param config table|nil Module config table. See |MiniAnimate.config|.
---
---@usage `require('mini.animate').setup({})` (replace `{}` with your `config` table)
MiniAnimate.setup = function(config)
-- Export module
_G.MiniAnimate = MiniAnimate
-- Setup config
config = H.setup_config(config)
-- Apply config
H.apply_config(config)
-- Define behavior
H.create_autocommands()
H.track_scroll_state()
-- Create default highlighting
H.create_default_hl()
end
--- Module config
---
--- Default values:
---@eval return MiniDoc.afterlines_to_code(MiniDoc.current.eval_section)
---@text
--- # General ~
--- *MiniAnimate-timing*
--- - Every animation is a non-blockingly scheduled series of specific actions.
--- They are executed in a sequence of timed steps controlled by `timing` option.
--- It is a callable which, given next and total step numbers, returns wait time
--- (in ms). See |MiniAnimate.gen_timing| for builtin timing functions.
--- See |MiniAnimate.animate()| for more details about animation process.
---
--- - Every animation can be enabled/disabled independently by setting `enable`
--- option to `true`/`false`.
---
--- *MiniAnimate-done-event*
--- - Every animation triggers custom |User| event when it is finished. It is
--- named `MiniAnimateDoneXxx` with `Xxx` replaced by capitalized supported
--- animation action name (like `MiniAnimateDoneCursor`). Use it to schedule
--- some action after certain animation is completed. Alternatively, you can
--- use |MiniAnimate.execute_after()| (usually preferred in mappings).
---
--- - Each animation has its main step generator which defines how particular
--- animation is done. They all are callables which take some input data and
--- return an array of step data. Length of that array determines number of
--- animation steps. Outputs `nil` and empty table result in no animation.
---
--- *MiniAnimate.config.cursor*
--- # Cursor ~
---
--- This animation is triggered for each movement of cursor inside same window
--- and buffer. Its visualization step consists from placing single extmark (see
--- |extmarks|) at certain position. This extmark contains single space and is
--- highlighted with `MiniAnimateCursor` highlight group.
---
--- Exact places of extmark and their number is controlled by `path` option. It
--- is a callable which takes `destination` argument (2d integer point in
--- `(line, col)` coordinates) and returns array of relative to `(0, 0)` places
--- for extmark to be placed. Example:
--- - Input `(2, -3)` means cursor jumped 2 lines forward and 3 columns backward.
--- - Output `{ {0, 0 }, { 0, -1 }, { 0, -2 }, { 0, -3 }, { 1, -3 } }` means
--- that path is first visualized along the initial line and then along final
--- column.
---
--- See |MiniAnimate.gen_path| for builtin path generators.
---
--- Notes:
--- - Input `destination` value is computed ignoring folds. This is by design
--- as it helps better visualize distance between two cursor positions.
--- - Outputs of path generator resulting in a place where extmark can't be
--- placed are silently omitted during animation: this step won't show any
--- visualization.
---
--- Configuration example: >
---
--- local animate = require('mini.animate')
--- animate.setup({
--- cursor = {
--- -- Animate for 200 milliseconds with linear easing
--- timing = animate.gen_timing.linear({ duration = 200, unit = 'total' }),
---
--- -- Animate with shortest line for any cursor move
--- path = animate.gen_path.line({
--- predicate = function() return true end,
--- }),
--- }
--- })
---
--- After animation is done, `MiniAnimateDoneCursor` event is triggered.
---
--- *MiniAnimate.config.scroll*
--- # Scroll ~
---
--- This animation is triggered for each vertical scroll of current window.
--- Its visualization step consists from performing a small subscroll which all
--- in total will result into needed total scroll.
---
--- Exact subscroll values and their number is controlled by `subscroll` option.
--- It is a callable which takes `total_scroll` argument (single non-negative
--- integer) and returns array of non-negative integers each representing the
--- amount of lines needed to be scrolled inside corresponding step. All
--- subscroll values should sum to input `total_scroll`.
--- Example:
--- - Input `5` means that total scroll consists from 5 lines (either up or down,
--- which doesn't matter).
--- - Output of `{ 1, 1, 1, 1, 1 }` means that there are 5 equal subscrolls.
---
--- See |MiniAnimate.gen_subscroll| for builtin subscroll generators.
---
--- Notes:
--- - Input value of `total_scroll` is computed taking folds into account.
--- - As scroll animation is essentially a precisely scheduled non-blocking
--- subscrolls, this has two important interconnected consequences:
--- - If another scroll is attempted during the animation, it is done based
--- on the **currently visible** window view. Example: if user presses
--- |CTRL-D| and then |CTRL-U| when animation is half done, window will not
--- display the previous view half of 'scroll' above it. This especially
--- affects mouse wheel scrolling, as each its turn results in a new scroll
--- for number of lines defined by 'mousescroll'. Tweak it to your liking.
--- - It breaks the use of several relative scrolling commands in the same
--- command. Use |MiniAnimate.execute_after()| to schedule action after
--- reaching target window view.
--- Example: a useful `nnoremap n nzvzz` mapping (consecutive application
--- of |n|, |zv|, and |zz|) should have this right hand side: >
---
--- <Cmd>lua vim.cmd('normal! n'); MiniAnimate.execute_after('scroll', 'normal! zvzz')<CR>
---
--- - This animation works best with Neovim>=0.9 (after certain updates to
--- |WinScrolled| event).
---
--- Configuration example: >
---
--- local animate = require('mini.animate')
--- animate.setup({
--- scroll = {
--- -- Animate for 200 milliseconds with linear easing
--- timing = animate.gen_timing.linear({ duration = 200, unit = 'total' }),
---
--- -- Animate equally but with at most 120 steps instead of default 60
--- subscroll = animate.gen_subscroll.equal({ max_output_steps = 120 }),
--- }
--- })
---
--- After animation is done, `MiniAnimateDoneScroll` event is triggered.
---
--- *MiniAnimate.config.resize*
--- # Resize ~
---
--- This animation is triggered for window resize while having same layout of
--- same windows. For example, it won't trigger when window is opened/closed or
--- after something like |CTRL-W_K|. Its visualization step consists from setting
--- certain sizes to all visible windows (last step being for "true" final sizes).
---
--- Exact window step sizes and their number is controlled by `subresize` option.
--- It is a callable which takes `sizes_from` and `sizes_to` arguments (both
--- tables with window id as keys and dimension table as values) and returns
--- array of same shaped data.
--- Example:
--- - Inputs
--- `{ [1000] = {width = 7, height = 5}, [1001] = {width = 7, height = 10} }`
--- and
--- `{ [1000] = {width = 9, height = 5}, [1001] = {width = 5, height = 10} }`
--- mean that window 1000 increased its width by 2 in expense of window 1001.
--- - The following output demonstrates equal resizing: >
---
--- {
--- { [1000] = {width = 8, height = 5}, [1001] = {width = 6, height = 10} },
--- { [1000] = {width = 9, height = 5}, [1001] = {width = 5, height = 10} },
--- }
---
--- See |MiniAnimate.gen_subresize| for builtin subresize generators.
---
--- Notes:
---
--- - As resize animation is essentially a precisely scheduled non-blocking
--- subresizes, this has two important interconnected consequences:
--- - If another resize is attempted during the animation, it is done based
--- on the **currently visible** window sizes. This might affect relative
--- resizing.
--- - It breaks the use of several relative resizing commands in the same
--- command. Use |MiniAnimate.execute_after()| to schedule action after
--- reaching target window sizes.
--- - This animation works best with Neovim>=0.9 (after certain updates to
--- |WinScrolled| event). For example, resize resulting from effect of
--- 'winheight' / 'winwidth' will work properly.
---
--- Configuration example: >
---
--- local is_many_wins = function(sizes_from, sizes_to)
--- return vim.tbl_count(sizes_from) >= 3
--- end
--- local animate = require('mini.animate')
--- animate.setup({
--- resize = {
--- -- Animate for 200 milliseconds with linear easing
--- timing = animate.gen_timing.linear({ duration = 200, unit = 'total' }),
---
--- -- Animate only if there are at least 3 windows
--- subresize = animate.gen_subscroll.equal({ predicate = is_many_wins }),
--- }
--- })
---
--- After animation is done, `MiniAnimateDoneResize` event is triggered.
---
--- *MiniAnimate.config.open* *MiniAnimate.config.close*
--- # Window open/close ~
---
--- These animations are similarly triggered for regular (non-floating) window
--- open/close. Their visualization step consists from drawing empty floating
--- window with customizable config and transparency.
---
--- Exact window visualization characteristics are controlled by `winconfig`
--- and `winblend` options.
---
--- The `winconfig` option is a callable which takes window id (|window-ID|) as
--- input and returns an array of floating window configs (as in `config`
--- argument of |nvim_open_win()|). Its length determines number of animation steps.
--- Example:
--- - The following output results into two animation steps with second being
--- upper left quarter of a first: >
---
--- {
--- {
--- row = 0, col = 0,
--- width = 10, height = 10,
--- relative = 'editor', anchor = 'NW', focusable = false,
--- zindex = 1, style = 'minimal',
--- },
--- {
--- row = 0, col = 0,
--- width = 5, height = 5,
--- relative = 'editor', anchor = 'NW', focusable = false,
--- zindex = 1, style = 'minimal',
--- },
--- }
---
--- The `winblend` option is similar to `timing` option: it is a callable
--- which, given current and total step numbers, returns value of floating
--- window's 'winblend' option. Note, that it is called for current step (so
--- starts from 0), as opposed to `timing` which is called before step.
--- Example:
--- - Function `function(s, n) return 80 + 20 * s / n end` results in linear
--- transition from `winblend` value of 80 to 100.
---
--- See |MiniAnimate.gen_winconfig| for builtin window config generators.
--- See |MiniAnimate.gen_winblend| for builtin window transparency generators.
---
--- Configuration example: >
---
--- local animate = require('mini.animate')
--- animate.setup({
--- open = {
--- -- Animate for 400 milliseconds with linear easing
--- timing = animate.gen_timing.linear({ duration = 400, unit = 'total' }),
---
--- -- Animate with wiping from nearest edge instead of default static one
--- winconfig = animate.gen_winconfig.wipe({ direction = 'from_edge' }),
---
--- -- Make bigger windows more transparent
--- winblend = animate.gen_winblend.linear({ from = 80, to = 100 }),
--- },
---
--- close = {
--- -- Animate for 400 milliseconds with linear easing
--- timing = animate.gen_timing.linear({ duration = 400, unit = 'total' }),
---
--- -- Animate with wiping to nearest edge instead of default static one
--- winconfig = animate.gen_winconfig.wipe({ direction = 'to_edge' }),
---
--- -- Make bigger windows more transparent
--- winblend = animate.gen_winblend.linear({ from = 100, to = 80 }),
--- },
--- })
---
--- After animation is done, `MiniAnimateDoneOpen` or `MiniAnimateDoneClose`
--- event is triggered for `open` and `close` animation respectively.
MiniAnimate.config = {
-- Cursor path
cursor = {
-- Whether to enable this animation
enable = true,
-- Timing of animation (how steps will progress in time)
--minidoc_replace_start timing = --<function: implements linear total 250ms animation duration>,
timing = function(_, n) return 250 / n end,
--minidoc_replace_end
-- Path generator for visualized cursor movement
--minidoc_replace_start path = --<function: implements shortest line path>,
path = function(destination) return H.path_line(destination, { predicate = H.default_path_predicate }) end,
--minidoc_replace_end
},
-- Vertical scroll
scroll = {
-- Whether to enable this animation
enable = true,
-- Timing of animation (how steps will progress in time)
--minidoc_replace_start timing = --<function: implements linear total 250ms animation duration>,
timing = function(_, n) return 250 / n end,
--minidoc_replace_end
-- Subscroll generator based on total scroll
--minidoc_replace_start subscroll = --<function: implements equal scroll with at most 60 steps>,
subscroll = function(total_scroll)
return H.subscroll_equal(total_scroll, { predicate = H.default_subscroll_predicate, max_output_steps = 60 })
end,
--minidoc_replace_end
},
-- Window resize
resize = {
-- Whether to enable this animation
enable = true,
-- Timing of animation (how steps will progress in time)
--minidoc_replace_start timing = --<function: implements linear total 250ms animation duration>,
timing = function(_, n) return 250 / n end,
--minidoc_replace_end
-- Subresize generator for all steps of resize animations
--minidoc_replace_start subresize = --<function: implements equal linear steps>,
subresize = function(sizes_from, sizes_to)
return H.subresize_equal(sizes_from, sizes_to, { predicate = H.default_subresize_predicate })
end,
--minidoc_replace_end
},
-- Window open
open = {
-- Whether to enable this animation
enable = true,
-- Timing of animation (how steps will progress in time)
--minidoc_replace_start timing = --<function: implements linear total 250ms animation duration>,
timing = function(_, n) return 250 / n end,
--minidoc_replace_end
-- Floating window config generator visualizing specific window
--minidoc_replace_start winconfig = --<function: implements static window for 25 steps>,
winconfig = function(win_id)
return H.winconfig_static(win_id, { predicate = H.default_winconfig_predicate, n_steps = 25 })
end,
--minidoc_replace_end
-- 'winblend' (window transparency) generator for floating window
--minidoc_replace_start winblend = --<function: implements equal linear steps from 80 to 100>,
winblend = function(s, n) return 80 + 20 * (s / n) end,
--minidoc_replace_end
},
-- Window close
close = {
-- Whether to enable this animation
enable = true,
-- Timing of animation (how steps will progress in time)
--minidoc_replace_start timing = --<function: implements linear total 250ms animation duration>,
timing = function(_, n) return 250 / n end,
--minidoc_replace_end
-- Floating window config generator visualizing specific window
--minidoc_replace_start winconfig = --<function: implements static window for 25 steps>,
winconfig = function(win_id)
return H.winconfig_static(win_id, { predicate = H.default_winconfig_predicate, n_steps = 25 })
end,
--minidoc_replace_end
-- 'winblend' (window transparency) generator for floating window
--minidoc_replace_start winblend = --<function: implements equal linear steps from 80 to 100>,
winblend = function(s, n) return 80 + 20 * (s / n) end,
--minidoc_replace_end
},
}
--minidoc_afterlines_end
-- Module functionality =======================================================
--- Check animation activity
---
---@param animation_type string One of supported animation types
--- (entries of |MiniAnimate.config|, like `'cursor'`, etc.).
---
---@return boolean Whether the animation is currently active.
MiniAnimate.is_active = function(animation_type)
local res = H.cache[animation_type .. '_is_active']
if res == nil then H.error('Wrong `animation_type` for `is_active()`.') end
return res
end
--- Execute action after some animation is done
---
--- Execute action immediately if animation is not active (checked with
--- |MiniAnimate.is_active()|). Else, schedule its execution until after
--- animation is done (on corresponding "done event", see
--- |MiniAnimate-done-event|).
---
--- Mostly meant to be used inside mappings.
---
--- Example ~
---
--- A useful `nnoremap n nzvzz` mapping (consecutive application of |n|, |zv|, and |zz|)
--- should have this right hand side: >
---
--- <Cmd>lua vim.cmd('normal! n'); MiniAnimate.execute_after('scroll', 'normal! zvzz')<CR>
---
---@param animation_type string One of supported animation types
--- (as in |MiniAnimate.is_active()|).
---@param action string|function Action to be executed. If string, executed as
--- command (via |vim.cmd()|).
MiniAnimate.execute_after = function(animation_type, action)
local event_name = H.animation_done_events[animation_type]
if event_name == nil then H.error('Wrong `animation_type` for `execute_after`.') end
local callable = action
if type(callable) == 'string' then callable = function() vim.cmd(action) end end
if not vim.is_callable(callable) then
H.error('Argument `action` of `execute_after()` should be string or callable.')
end
-- Schedule conditional action execution to allow animation to actually take
-- effect. This helps creating more universal mappings, because some commands
-- (like `n`) not always result into scrolling.
vim.schedule(function()
if MiniAnimate.is_active(animation_type) then
vim.api.nvim_create_autocmd('User', { pattern = event_name, callback = callable })
else
callable()
end
end)
end
-- Action (step 0) - wait (step 1) - action (step 1) - ...
-- `step_action` should return `false` or `nil` (equivalent to not returning anything explicitly) in order to stop animation.
--- Animate action
---
--- This is equivalent to asynchronous execution of the following algorithm:
--- - Call `step_action(0)` immediately after calling this function. Stop if
--- action returned `false` or `nil`.
--- - Wait `step_timing(1)` milliseconds.
--- - Call `step_action(1)`. Stop if it returned `false` or `nil`.
--- - Wait `step_timing(2)` milliseconds.
--- - Call `step_action(2)`. Stop if it returned `false` or `nil`.
--- - ...
---
--- Notes:
--- - Animation is also stopped on action error or if maximum number of steps
--- is reached.
--- - Asynchronous execution is done with |uv.new_timer()|. It only allows
--- integer parts as repeat value. This has several implications:
--- - Outputs of `step_timing()` are accumulated in order to preserve total
--- execution time.
--- - Any wait time less than 1 ms means that action will be executed
--- immediately.
---
---@param step_action function|table Callable which takes `step` (integer 0, 1, 2,
--- etc. indicating current step) and executes some action. Its return value
--- defines when animation should stop: values `false` and `nil` (equivalent
--- to no explicit return) stop animation timer; any other continues it.
---@param step_timing function|table Callable which takes `step` (integer 1, 2, etc.
--- indicating next step) and returns how many milliseconds to wait before
--- executing this step action.
---@param opts table|nil Options. Possible fields:
--- - <max_steps> - Maximum value of allowed step to execute. Default: 10000000.
MiniAnimate.animate = function(step_action, step_timing, opts)
opts = vim.tbl_deep_extend('force', { max_steps = 10000000 }, opts or {})
local step, max_steps = 0, opts.max_steps
local timer, wait_time = vim.loop.new_timer(), 0
local draw_step
draw_step = vim.schedule_wrap(function()
local ok, should_continue = pcall(step_action, step)
if not (ok and should_continue and step < max_steps) then
timer:stop()
return
end
step = step + 1
wait_time = wait_time + step_timing(step)
-- Repeat value of `timer` seems to be rounded down to milliseconds. This
-- means that values less than 1 will lead to timer stop repeating. Instead
-- call next step function directly.
if wait_time < 1 then
timer:set_repeat(0)
-- Use `return` to make this proper "tail call"
return draw_step()
else
timer:set_repeat(wait_time)
wait_time = wait_time - timer:get_repeat()
timer:again()
end
end)
-- Start non-repeating timer without callback execution
timer:start(10000000, 0, draw_step)
-- Draw step zero (at origin) immediately
draw_step()
end
--- Generate animation timing
---
--- Each field corresponds to one family of progression which can be customized
--- further by supplying appropriate arguments.
---
--- This is a table with function elements. Call to actually get timing function.
---
--- Example: >
---
--- local animate = require('mini.animate')
--- animate.setup({
--- cursor = {
--- timing = animate.gen_timing.linear({ duration = 100, unit = 'total' })
--- },
--- })
---
---@seealso |MiniIndentscope.gen_animation| for similar concept in 'mini.indentscope'.
MiniAnimate.gen_timing = {}
---@alias __animate_timing_opts table|nil Options that control progression. Possible keys:
--- - <easing> `(string)` - a subtype of progression. One of "in"
--- (accelerating from zero speed), "out" (decelerating to zero speed),
--- "in-out" (default; accelerating halfway, decelerating after).
--- - <duration> `(number)` - duration (in ms) of a unit. Default: 20.
--- - <unit> `(string)` - which unit's duration `opts.duration` controls. One
--- of "step" (default; ensures average duration of step to be `opts.duration`)
--- or "total" (ensures fixed total duration regardless of scope's range).
---@alias __animate_timing_return function Timing function (see |MiniAnimate-timing|).
--- Generate timing with no animation
---
--- Show final result immediately. Usually better to use `enable` field in `config`
--- if you want to disable animation.
MiniAnimate.gen_timing.none = function()
return function() return 0 end
end
--- Generate timing with linear progression
---
---@param opts __animate_timing_opts
---
---@return __animate_timing_return
MiniAnimate.gen_timing.linear = function(opts) return H.timing_arithmetic(0, H.normalize_timing_opts(opts)) end
--- Generate timing with quadratic progression
---
---@param opts __animate_timing_opts
---
---@return __animate_timing_return
MiniAnimate.gen_timing.quadratic = function(opts) return H.timing_arithmetic(1, H.normalize_timing_opts(opts)) end
--- Generate timing with cubic progression
---
---@param opts __animate_timing_opts
---
---@return __animate_timing_return
MiniAnimate.gen_timing.cubic = function(opts) return H.timing_arithmetic(2, H.normalize_timing_opts(opts)) end
--- Generate timing with quartic progression
---
---@param opts __animate_timing_opts
---
---@return __animate_timing_return
MiniAnimate.gen_timing.quartic = function(opts) return H.timing_arithmetic(3, H.normalize_timing_opts(opts)) end
--- Generate timing with exponential progression
---
---@param opts __animate_timing_opts
---
---@return __animate_timing_return
MiniAnimate.gen_timing.exponential = function(opts) return H.timing_geometrical(H.normalize_timing_opts(opts)) end
--- Generate cursor animation path
---
--- For more information see |MiniAnimate.config.cursor|.
---
--- This is a table with function elements. Call to actually get generator.
---
--- Example: >
---
--- local animate = require('mini.animate')
--- animate.setup({
--- cursor = {
--- -- Animate with line-column angle instead of shortest line
--- path = animate.gen_path.angle(),
--- }
--- })
MiniAnimate.gen_path = {}
---@alias __animate_path_opts_common table|nil Options that control generator. Possible keys:
--- - <predicate> `(function)` - a callable which takes `destination` as input and
--- returns boolean value indicating whether animation should be done.
--- Default: `false` if `destination` is within one line of origin (reduces
--- flickering), `true` otherwise.
---@alias __animate_path_return function Path function (see |MiniAnimate.config.cursor|).
--- Generate path as shortest line
---
---@param opts __animate_path_opts_common
---
---@return __animate_path_return
MiniAnimate.gen_path.line = function(opts)
opts = vim.tbl_deep_extend('force', { predicate = H.default_path_predicate }, opts or {})
return function(destination) return H.path_line(destination, opts) end
end
--- Generate path as line/column angle
---
---@param opts __animate_path_opts_common
--- - <first_direction> `(string)` - one of `"horizontal"` (default; animates
--- across initial line first) or `"vertical"` (animates across initial
--- column first).
---
---@return __animate_path_return
MiniAnimate.gen_path.angle = function(opts)
opts = opts or {}
local predicate = opts.predicate or H.default_path_predicate
local first_direction = opts.first_direction or 'horizontal'
local append_horizontal = function(res, dest_col, const_line)
local step = H.make_step(dest_col)
if step == 0 then return end
for i = 0, dest_col - step, step do
table.insert(res, { const_line, i })
end
end
local append_vertical = function(res, dest_line, const_col)
local step = H.make_step(dest_line)
if step == 0 then return end
for i = 0, dest_line - step, step do
table.insert(res, { i, const_col })
end
end
return function(destination)
-- Don't animate in case of false predicate
if not predicate(destination) then return {} end
-- Travel along horizontal/vertical lines
local res = {}
if first_direction == 'horizontal' then
append_horizontal(res, destination[2], 0)
append_vertical(res, destination[1], destination[2])
else
append_vertical(res, destination[1], 0)
append_horizontal(res, destination[2], destination[1])
end
return res
end
end
--- Generate path as closing walls at final position
---
---@param opts __animate_path_opts_common
--- - <width> `(number)` - initial width of left and right walls. Default: 10.
---
---@return __animate_path_return
MiniAnimate.gen_path.walls = function(opts)
opts = opts or {}
local predicate = opts.predicate or H.default_path_predicate
local width = opts.width or 10
return function(destination)
-- Don't animate in case of false predicate
if not predicate(destination) then return {} end
-- Don't animate in case of no movement
if destination[1] == 0 and destination[2] == 0 then return {} end
local dest_line, dest_col = destination[1], destination[2]
local res = {}
for i = width, 1, -1 do
table.insert(res, { dest_line, dest_col + i })
table.insert(res, { dest_line, dest_col - i })
end
return res
end
end
--- Generate path as diminishing spiral at final position
---
---@param opts __animate_path_opts_common
--- - <width> `(number)` - initial width of spiral. Default: 2.
---
---@return __animate_path_return
MiniAnimate.gen_path.spiral = function(opts)
opts = opts or {}
local predicate = opts.predicate or H.default_path_predicate
local width = opts.width or 2
local add_layer = function(res, w, destination)
local dest_line, dest_col = destination[1], destination[2]
--stylua: ignore start
for j = -w, w-1 do table.insert(res, { dest_line - w, dest_col + j }) end
for i = -w, w-1 do table.insert(res, { dest_line + i, dest_col + w }) end
for j = -w, w-1 do table.insert(res, { dest_line + w, dest_col - j }) end
for i = -w, w-1 do table.insert(res, { dest_line - i, dest_col - w }) end
--stylua: ignore end
end
return function(destination)
-- Don't animate in case of false predicate
if not predicate(destination) then return {} end
-- Don't animate in case of no movement
if destination[1] == 0 and destination[2] == 0 then return {} end
local res = {}
for w = width, 1, -1 do
add_layer(res, w, destination)
end
return res
end
end
--- Generate scroll animation subscroll
---
--- For more information see |MiniAnimate.config.scroll|.
---
--- This is a table with function elements. Call to actually get generator.
---
--- Example: >
---
--- local animate = require('mini.animate')
--- animate.setup({
--- scroll = {
--- -- Animate equally but with 120 maximum steps instead of default 60
--- subscroll = animate.gen_subscroll.equal({ max_output_steps = 120 }),
--- }
--- })
MiniAnimate.gen_subscroll = {}
--- Generate subscroll with equal steps
---
---@param opts table|nil Options that control generator. Possible keys:
--- - <predicate> `(function)` - a callable which takes `total_scroll` as
--- input and returns boolean value indicating whether animation should be
--- done. Default: `false` if `total_scroll` is 1 or less (reduces
--- unnecessary waiting), `true` otherwise.
--- - <max_output_steps> `(number)` - maximum number of subscroll steps in output.
--- Adjust this to reduce computations in expense of reduced smoothness.
--- Default: 60.
---
---@return function Subscroll function (see |MiniAnimate.config.scroll|).
MiniAnimate.gen_subscroll.equal = function(opts)
opts = vim.tbl_deep_extend('force', { predicate = H.default_subscroll_predicate, max_output_steps = 60 }, opts or {})
return function(total_scroll) return H.subscroll_equal(total_scroll, opts) end
end
--- Generate resize animation subresize
---
--- For more information see |MiniAnimate.config.resize|.
---
--- This is a table with function elements. Call to actually get generator.
---
--- Example: >
---
--- local is_many_wins = function(sizes_from, sizes_to)
--- return vim.tbl_count(sizes_from) >= 3
--- end
--- local animate = require('mini.animate')
--- animate.setup({
--- resize = {
--- -- Animate only if there are at least 3 windows
--- subresize = animate.gen_subresize.equal({ predicate = is_many_wins }),
--- }
--- })
MiniAnimate.gen_subresize = {}
--- Generate subresize with equal steps
---
---@param opts table|nil Options that control generator. Possible keys:
--- - <predicate> `(function)` - a callable which takes `sizes_from` and
--- `sizes_to` as input and returns boolean value indicating whether
--- animation should be done. Default: always `true`.
---
---@return function Subresize function (see |MiniAnimate.config.resize|).
MiniAnimate.gen_subresize.equal = function(opts)
opts = vim.tbl_deep_extend('force', { predicate = H.default_subresize_predicate }, opts or {})
return function(sizes_from, sizes_to) return H.subresize_equal(sizes_from, sizes_to, opts) end
end
--- Generate open/close animation winconfig
---
--- For more information see |MiniAnimate.config.open| or |MiniAnimate.config.close|.
---
--- This is a table with function elements. Call to actually get generator.
---
--- Example: >
---
--- local is_not_single_window = function(win_id)
--- local tabpage_id = vim.api.nvim_win_get_tabpage(win_id)
--- return #vim.api.nvim_tabpage_list_wins(tabpage_id) > 1
--- end
--- local animate = require('mini.animate')
--- animate.setup({
--- open = {
--- -- Animate with wiping from nearest edge instead of default static one
--- -- and only if it is not a single window in tabpage
--- winconfig = animate.gen_winconfig.wipe({
--- predicate = is_not_single_window,
--- direction = 'from_edge',
--- }),
--- },
--- close = {
--- -- Animate with wiping to nearest edge instead of default static one
--- -- and only if it is not a single window in tabpage
--- winconfig = animate.gen_winconfig.wipe({
--- predicate = is_not_single_window,
--- direction = 'to_edge',
--- }),
--- },
--- })
MiniAnimate.gen_winconfig = {}
---@alias __animate_winconfig_opts_common table|nil Options that control generator. Possible keys:
--- - <predicate> `(function)` - a callable which takes `win_id` as input and
--- returns boolean value indicating whether animation should be done.
--- Default: always `true`.
---@alias __animate_winconfig_return function Winconfig function (see |MiniAnimate.config.open|
--- or |MiniAnimate.config.close|).
--- Generate winconfig for static floating window
---
--- This will result into floating window statically covering whole target
--- window.
---
---@param opts __animate_winconfig_opts_common
--- - <n_steps> `(number)` - number of output steps, all with same config.
--- Useful to tweak smoothness of transparency animation (done inside
--- `winblend` config option). Default: 25.
---
---@return __animate_winconfig_return
MiniAnimate.gen_winconfig.static = function(opts)
opts = vim.tbl_deep_extend('force', { predicate = H.default_winconfig_predicate, n_steps = 25 }, opts or {})
return function(win_id) return H.winconfig_static(win_id, opts) end
end
--- Generate winconfig for center-focused animated floating window
---
--- This will result into floating window growing from or shrinking to the
--- target window center.
---
---@param opts __animate_winconfig_opts_common
--- - <direction> `(string)` - one of `"to_center"` (default; window will
--- shrink from full coverage to center) or `"from_center"` (window will
--- grow from center to full coverage).
---
---@return __animate_winconfig_return
MiniAnimate.gen_winconfig.center = function(opts)
opts = opts or {}
local predicate = opts.predicate or H.default_winconfig_predicate
local direction = opts.direction or 'to_center'
return function(win_id)
-- Don't animate in case of false predicate
if not predicate(win_id) then return {} end
local pos = vim.fn.win_screenpos(win_id)
local row, col = pos[1] - 1, pos[2] - 1
local height, width = vim.api.nvim_win_get_height(win_id), vim.api.nvim_win_get_width(win_id)
local n_steps = math.max(height, width)
local res = {}
-- Progression should be between fully covering target window and minimal
-- dimensions in target window center.
for i = 1, n_steps do
local coef = (i - 1) / n_steps
-- Reverse output if progression is from center
local res_ind = direction == 'to_center' and i or (n_steps - i + 1)
--stylua: ignore
res[res_ind] = {
relative = 'editor',
anchor = 'NW',
row = H.round(row + 0.5 * coef * height),
col = H.round(col + 0.5 * coef * width),
width = math.ceil((1 - coef) * width),
height = math.ceil((1 - coef) * height),