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perf(ui-ext): approximate scroll_delta when scrolling too much (#24234)

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zeertzjq 2023-07-04 16:48:53 +08:00 committed by GitHub
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4 changed files with 250 additions and 15 deletions
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3
runtime/doc/ui.txt
View File

@ -640,7 +640,8 @@ tabs.
the top line of a window moved since `win_viewport` was last emitted.
It is intended to be used to implement smooth scrolling. For this
purpose it only counts "virtual" or "displayed" lines, so folds
only count as one line.
only count as one line. When scrolling more than a full screen it is
an approximate value.
["win_extmark", grid, win, ns_id, mark_id, row, col] ~
Updates the position of an extmark which is currently visible in a

1
src/nvim/buffer_defs.h
View File

@ -1226,6 +1226,7 @@ struct window_S {
bool w_viewport_invalid;
linenr_T w_viewport_last_topline; // topline when the viewport was last updated
linenr_T w_viewport_last_botline; // botline when the viewport was last updated
linenr_T w_viewport_last_topfill; // topfill when the viewport was last updated
linenr_T w_viewport_last_skipcol; // skipcol when the viewport was last updated

46
src/nvim/window.c
View File

@ -1030,15 +1030,13 @@ void ui_ext_win_position(win_T *wp, bool validate)
void ui_ext_win_viewport(win_T *wp)
{
if ((wp == curwin || ui_has(kUIMultigrid)) && wp->w_viewport_invalid) {
int botline = wp->w_botline;
int line_count = wp->w_buffer->b_ml.ml_line_count;
if (botline == line_count + 1 && wp->w_empty_rows == 0) {
// TODO(bfredl): The might be more cases to consider, like how does this
// interact with incomplete final line? Diff filler lines?
botline = wp->w_buffer->b_ml.ml_line_count;
}
const linenr_T line_count = wp->w_buffer->b_ml.ml_line_count;
// Avoid ml_get errors when producing "scroll_delta".
const linenr_T cur_topline = MIN(wp->w_topline, line_count);
const linenr_T cur_botline = MIN(wp->w_botline, line_count);
int64_t delta = 0;
linenr_T last_topline = wp->w_viewport_last_topline;
linenr_T last_botline = wp->w_viewport_last_botline;
int last_topfill = wp->w_viewport_last_topfill;
int64_t last_skipcol = wp->w_viewport_last_skipcol;
if (last_topline > line_count) {
@ -1047,19 +1045,39 @@ void ui_ext_win_viewport(win_T *wp)
last_topfill = 0;
last_skipcol = MAXCOL;
}
if (wp->w_topline < last_topline
|| (wp->w_topline == last_topline && wp->w_skipcol < last_skipcol)) {
delta -= win_get_text_height(wp, wp->w_topline, last_topline, wp->w_skipcol, last_skipcol);
} else if ((wp->w_topline > last_topline && wp->w_topline <= line_count)
|| (wp->w_topline == last_topline && wp->w_skipcol > last_skipcol)) {
delta += win_get_text_height(wp, last_topline, wp->w_topline, last_skipcol, wp->w_skipcol);
last_botline = MIN(last_botline, line_count);
if (cur_topline < last_topline
|| (cur_topline == last_topline && wp->w_skipcol < last_skipcol)) {
if (last_topline > 0 && cur_botline < last_topline) {
// Scrolling too many lines: only give an approximate "scroll_delta".
delta -= win_get_text_height(wp, cur_topline, cur_botline, wp->w_skipcol, 0);
delta -= last_topline - cur_botline;
} else {
delta -= win_get_text_height(wp, cur_topline, last_topline, wp->w_skipcol, last_skipcol);
}
} else if (cur_topline > last_topline
|| (cur_topline == last_topline && wp->w_skipcol > last_skipcol)) {
if (last_botline > 0 && cur_topline > last_botline) {
// Scrolling too many lines: only give an approximate "scroll_delta".
delta += win_get_text_height(wp, last_topline, last_botline, last_skipcol, 0);
delta += cur_topline - last_botline;
} else {
delta += win_get_text_height(wp, last_topline, cur_topline, last_skipcol, wp->w_skipcol);
}
}
delta += last_topfill;
delta -= wp->w_topfill;
ui_call_win_viewport(wp->w_grid_alloc.handle, wp->handle, wp->w_topline - 1, botline,
linenr_T ev_botline = wp->w_botline;
if (ev_botline == line_count + 1 && wp->w_empty_rows == 0) {
// TODO(bfredl): The might be more cases to consider, like how does this
// interact with incomplete final line? Diff filler lines?
ev_botline = line_count;
}
ui_call_win_viewport(wp->w_grid_alloc.handle, wp->handle, wp->w_topline - 1, ev_botline,
wp->w_cursor.lnum - 1, wp->w_cursor.col, line_count, delta);
wp->w_viewport_invalid = false;
wp->w_viewport_last_topline = wp->w_topline;
wp->w_viewport_last_botline = wp->w_botline;
wp->w_viewport_last_topfill = wp->w_topfill;
wp->w_viewport_last_skipcol = wp->w_skipcol;
}

215
test/functional/ui/multigrid_spec.lua
View File

@ -3631,6 +3631,221 @@ describe('ext_multigrid', function()
}}
end)
it('scroll_delta is approximated reasonably when scrolling many lines #24234', function()
command('setlocal number nowrap')
command('edit test/functional/fixtures/bigfile.txt')
screen:expect{grid=[[
## grid 1
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
{11:test/functional/fixtures/bigfile.txt }|
[3:-----------------------------------------------------]|
## grid 2
{19: 1 }^0000;<control>;Cc;0;BN;;;;;N;NULL;;;; |
{19: 2 }0001;<control>;Cc;0;BN;;;;;N;START OF HEADING;;|
{19: 3 }0002;<control>;Cc;0;BN;;;;;N;START OF TEXT;;;; |
{19: 4 }0003;<control>;Cc;0;BN;;;;;N;END OF TEXT;;;; |
{19: 5 }0004;<control>;Cc;0;BN;;;;;N;END OF TRANSMISSIO|
{19: 6 }0005;<control>;Cc;0;BN;;;;;N;ENQUIRY;;;; |
{19: 7 }0006;<control>;Cc;0;BN;;;;;N;ACKNOWLEDGE;;;; |
{19: 8 }0007;<control>;Cc;0;BN;;;;;N;BELL;;;; |
{19: 9 }0008;<control>;Cc;0;BN;;;;;N;BACKSPACE;;;; |
{19: 10 }0009;<control>;Cc;0;S;;;;;N;CHARACTER TABULATIO|
{19: 11 }000A;<control>;Cc;0;B;;;;;N;LINE FEED (LF);;;; |
{19: 12 }000B;<control>;Cc;0;S;;;;;N;LINE TABULATION;;;;|
## grid 3
|
]], win_viewport={
[2] = {win = {id = 1000}, topline = 0, botline = 13, curline = 0, curcol = 0, linecount = 30592, sum_scroll_delta = 0};
}}
feed('G')
screen:expect{grid=[[
## grid 1
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
{11:test/functional/fixtures/bigfile.txt }|
[3:-----------------------------------------------------]|
## grid 2
{19:30581 }E01E8;VARIATION SELECTOR-249;Mn;0;NSM;;;;;N;;;;|
{19:30582 }E01E9;VARIATION SELECTOR-250;Mn;0;NSM;;;;;N;;;;|
{19:30583 }E01EA;VARIATION SELECTOR-251;Mn;0;NSM;;;;;N;;;;|
{19:30584 }E01EB;VARIATION SELECTOR-252;Mn;0;NSM;;;;;N;;;;|
{19:30585 }E01EC;VARIATION SELECTOR-253;Mn;0;NSM;;;;;N;;;;|
{19:30586 }E01ED;VARIATION SELECTOR-254;Mn;0;NSM;;;;;N;;;;|
{19:30587 }E01EE;VARIATION SELECTOR-255;Mn;0;NSM;;;;;N;;;;|
{19:30588 }E01EF;VARIATION SELECTOR-256;Mn;0;NSM;;;;;N;;;;|
{19:30589 }F0000;<Plane 15 Private Use, First>;Co;0;L;;;;;|
{19:30590 }FFFFD;<Plane 15 Private Use, Last>;Co;0;L;;;;;N|
{19:30591 }100000;<Plane 16 Private Use, First>;Co;0;L;;;;|
{19:30592 }^10FFFD;<Plane 16 Private Use, Last>;Co;0;L;;;;;|
## grid 3
|
]], win_viewport={
[2] = {win = {id = 1000}, topline = 30580, botline = 30592, curline = 30591, curcol = 0, linecount = 30592, sum_scroll_delta = 30580};
}}
feed('gg')
screen:expect{grid=[[
## grid 1
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
{11:test/functional/fixtures/bigfile.txt }|
[3:-----------------------------------------------------]|
## grid 2
{19: 1 }^0000;<control>;Cc;0;BN;;;;;N;NULL;;;; |
{19: 2 }0001;<control>;Cc;0;BN;;;;;N;START OF HEADING;;|
{19: 3 }0002;<control>;Cc;0;BN;;;;;N;START OF TEXT;;;; |
{19: 4 }0003;<control>;Cc;0;BN;;;;;N;END OF TEXT;;;; |
{19: 5 }0004;<control>;Cc;0;BN;;;;;N;END OF TRANSMISSIO|
{19: 6 }0005;<control>;Cc;0;BN;;;;;N;ENQUIRY;;;; |
{19: 7 }0006;<control>;Cc;0;BN;;;;;N;ACKNOWLEDGE;;;; |
{19: 8 }0007;<control>;Cc;0;BN;;;;;N;BELL;;;; |
{19: 9 }0008;<control>;Cc;0;BN;;;;;N;BACKSPACE;;;; |
{19: 10 }0009;<control>;Cc;0;S;;;;;N;CHARACTER TABULATIO|
{19: 11 }000A;<control>;Cc;0;B;;;;;N;LINE FEED (LF);;;; |
{19: 12 }000B;<control>;Cc;0;S;;;;;N;LINE TABULATION;;;;|
## grid 3
|
]], win_viewport={
[2] = {win = {id = 1000}, topline = 0, botline = 13, curline = 0, curcol = 0, linecount = 30592, sum_scroll_delta = 0};
}}
command('setlocal wrap')
screen:expect{grid=[[
## grid 1
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
{11:test/functional/fixtures/bigfile.txt }|
[3:-----------------------------------------------------]|
## grid 2
{19: 1 }^0000;<control>;Cc;0;BN;;;;;N;NULL;;;; |
{19: 2 }0001;<control>;Cc;0;BN;;;;;N;START OF HEADING;;|
{19: };; |
{19: 3 }0002;<control>;Cc;0;BN;;;;;N;START OF TEXT;;;; |
{19: 4 }0003;<control>;Cc;0;BN;;;;;N;END OF TEXT;;;; |
{19: 5 }0004;<control>;Cc;0;BN;;;;;N;END OF TRANSMISSIO|
{19: }N;;;; |
{19: 6 }0005;<control>;Cc;0;BN;;;;;N;ENQUIRY;;;; |
{19: 7 }0006;<control>;Cc;0;BN;;;;;N;ACKNOWLEDGE;;;; |
{19: 8 }0007;<control>;Cc;0;BN;;;;;N;BELL;;;; |
{19: 9 }0008;<control>;Cc;0;BN;;;;;N;BACKSPACE;;;; |
{19: 10 }0009;<control>;Cc;0;S;;;;;N;CHARACTER TABULA{1:@@@}|
## grid 3
|
]], win_viewport={
[2] = {win = {id = 1000}, topline = 0, botline = 10, curline = 0, curcol = 0, linecount = 30592, sum_scroll_delta = 0};
}}
feed('G')
screen:expect{grid=[[
## grid 1
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
{11:test/functional/fixtures/bigfile.txt }|
[3:-----------------------------------------------------]|
## grid 2
{19:30587 }E01EE;VARIATION SELECTOR-255;Mn;0;NSM;;;;;N;;;;|
{19: }; |
{19:30588 }E01EF;VARIATION SELECTOR-256;Mn;0;NSM;;;;;N;;;;|
{19: }; |
{19:30589 }F0000;<Plane 15 Private Use, First>;Co;0;L;;;;;|
{19: }N;;;;; |
{19:30590 }FFFFD;<Plane 15 Private Use, Last>;Co;0;L;;;;;N|
{19: };;;;; |
{19:30591 }100000;<Plane 16 Private Use, First>;Co;0;L;;;;|
{19: };N;;;;; |
{19:30592 }^10FFFD;<Plane 16 Private Use, Last>;Co;0;L;;;;;|
{19: }N;;;;; |
## grid 3
|
]], win_viewport={
[2] = {win = {id = 1000}, topline = 30586, botline = 30592, curline = 30591, curcol = 0, linecount = 30592, sum_scroll_delta = 30588};
}}
command('autocmd CursorMoved * ++once call line("w$")') -- FIXME: this should not be needed
feed('gg')
screen:expect{grid=[[
## grid 1
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
[2:-----------------------------------------------------]|
{11:test/functional/fixtures/bigfile.txt }|
[3:-----------------------------------------------------]|
## grid 2
{19: 1 }^0000;<control>;Cc;0;BN;;;;;N;NULL;;;; |
{19: 2 }0001;<control>;Cc;0;BN;;;;;N;START OF HEADING;;|
{19: };; |
{19: 3 }0002;<control>;Cc;0;BN;;;;;N;START OF TEXT;;;; |
{19: 4 }0003;<control>;Cc;0;BN;;;;;N;END OF TEXT;;;; |
{19: 5 }0004;<control>;Cc;0;BN;;;;;N;END OF TRANSMISSIO|
{19: }N;;;; |
{19: 6 }0005;<control>;Cc;0;BN;;;;;N;ENQUIRY;;;; |
{19: 7 }0006;<control>;Cc;0;BN;;;;;N;ACKNOWLEDGE;;;; |
{19: 8 }0007;<control>;Cc;0;BN;;;;;N;BELL;;;; |
{19: 9 }0008;<control>;Cc;0;BN;;;;;N;BACKSPACE;;;; |
{19: 10 }0009;<control>;Cc;0;S;;;;;N;CHARACTER TABULA{1:@@@}|
## grid 3
|
]], win_viewport={
[2] = {win = {id = 1000}, topline = 0, botline = 10, curline = 0, curcol = 0, linecount = 30592, sum_scroll_delta = 0};
}}
end)
it('does not crash when dragging mouse across grid boundary', function()
screen:try_resize(48, 8)
screen:expect{grid=[[