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feat(api): add nvim_win_resize()

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Ref #6645

Problem:
When a window is resized it takes space from the window right/below first,
and only falls back to the window left/above when there is no more room.
Sometimes a user wants the space to come from a specific direction.

Solution:
Add nvim_win_resize(win, width, height, {anchor}) which resizes a window
with a choosable anchor edge, letting a window grow leftwards or upwards
by taking space from the window to the left or above first. The default
anchor reproduces nvim_win_set_width()/nvim_win_set_height().
This commit is contained in:
XiaowenHu96
2026-06-27 10:41:12 +08:00
parent 08a1228f82
commit ce718e31f4
17 changed files with 527 additions and 177 deletions
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103
test/functional/api/deprecated_spec.lua
View File

@@ -7,6 +7,7 @@ local Screen = require('test.functional.ui.screen')
local clear, eval, eq, ok = n.clear, n.eval, t.eq, t.ok
local api, command, fn = n.api, n.command, n.fn
local pcall_err, assert_alive = t.pcall_err, n.assert_alive
local insert, exec, feed = n.insert, n.exec, n.feed
describe('deprecated', function()
before_each(n.clear)
@@ -204,4 +205,106 @@ describe('deprecated', function()
assert_alive()
end)
end)
describe('{get,set}_height', function()
it('works', function()
command('vsplit')
eq(
api.nvim_win_get_height(api.nvim_list_wins()[2]),
api.nvim_win_get_height(api.nvim_list_wins()[1])
)
api.nvim_set_current_win(api.nvim_list_wins()[2])
command('split')
eq(
api.nvim_win_get_height(api.nvim_list_wins()[2]),
math.floor(api.nvim_win_get_height(api.nvim_list_wins()[1]) / 2)
)
api.nvim_win_set_height(api.nvim_list_wins()[2], 2)
eq(2, api.nvim_win_get_height(api.nvim_list_wins()[2]))
end)
it('failure modes', function()
command('split')
eq('Invalid window id: 999999', pcall_err(api.nvim_win_set_height, 999999, 10))
eq(
'Wrong type for argument 2 when calling nvim_win_set_height, expecting Integer',
pcall_err(api.nvim_win_set_height, 0, 0.9)
)
end)
it('correctly handles height=1', function()
command('split')
api.nvim_set_current_win(api.nvim_list_wins()[1])
api.nvim_win_set_height(api.nvim_list_wins()[2], 1)
eq(1, api.nvim_win_get_height(api.nvim_list_wins()[2]))
end)
it('correctly handles height=1 with a winbar', function()
command('set winbar=foobar')
command('set winminheight=0')
command('split')
api.nvim_set_current_win(api.nvim_list_wins()[1])
api.nvim_win_set_height(api.nvim_list_wins()[2], 1)
eq(1, api.nvim_win_get_height(api.nvim_list_wins()[2]))
end)
it('do not cause ml_get errors with foldmethod=expr #19989', function()
insert([[
aaaaa
bbbbb
ccccc]])
command('set foldmethod=expr')
exec([[
new
let w = nvim_get_current_win()
wincmd w
call nvim_win_set_height(w, 5)
]])
feed('l')
eq('', api.nvim_get_vvar('errmsg'))
end)
end)
describe('{get,set}_width', function()
it('works', function()
command('split')
eq(
api.nvim_win_get_width(api.nvim_list_wins()[2]),
api.nvim_win_get_width(api.nvim_list_wins()[1])
)
api.nvim_set_current_win(api.nvim_list_wins()[2])
command('vsplit')
eq(
api.nvim_win_get_width(api.nvim_list_wins()[2]),
math.floor(api.nvim_win_get_width(api.nvim_list_wins()[1]) / 2)
)
api.nvim_win_set_width(api.nvim_list_wins()[2], 2)
eq(2, api.nvim_win_get_width(api.nvim_list_wins()[2]))
end)
it('failure modes', function()
command('vsplit')
eq('Invalid window id: 999999', pcall_err(api.nvim_win_set_width, 999999, 10))
eq(
'Wrong type for argument 2 when calling nvim_win_set_width, expecting Integer',
pcall_err(api.nvim_win_set_width, 0, 0.9)
)
end)
it('do not cause ml_get errors with foldmethod=expr #19989', function()
insert([[
aaaaa
bbbbb
ccccc]])
command('set foldmethod=expr')
exec([[
vnew
let w = nvim_get_current_win()
wincmd w
call nvim_win_set_width(w, 5)
]])
feed('l')
eq('', api.nvim_get_vvar('errmsg'))
end)
end)
end)