feat(api): add nvim_win_text_height (#24236)

It uses the same code as "scroll_delta" of "win_viewport" UI event to
calculate text height, but is more flexible.
This commit is contained in:
zeertzjq
2023-07-11 07:15:46 +08:00
committed by GitHub
parent 3750e5ed9c
commit db8fe63a93
10 changed files with 398 additions and 41 deletions

View File

@@ -600,14 +600,14 @@ static int win_nolbr_chartabsize(chartabsize_T *cts, int *headp)
/// Get the number of screen lines a range of text will take in window "wp".
///
/// @param start_lnum first line number
/// @param start_vcol >= 0: virtual column on "start_lnum" where counting starts,
/// rounded down to full screen lines
/// < 0: count a full "start_lnum", including filler lines above
/// @param end_lnum last line number
/// @param end_vcol >= 0: virtual column on "end_lnum" where counting ends,
/// rounded up to full screen lines
/// < 0: count a full "end_lnum", not including fillers lines below
/// @param start_lnum Starting line number, 1-based inclusive.
/// @param start_vcol >= 0: Starting virtual column index on "start_lnum",
/// 0-based inclusive, rounded down to full screen lines.
/// < 0: Count a full "start_lnum", including filler lines above.
/// @param end_lnum Ending line number, 1-based inclusive.
/// @param end_vcol >= 0: Ending virtual column index on "end_lnum",
/// 0-based exclusive, rounded up to full screen lines.
/// < 0: Count a full "end_lnum", not including fillers lines below.
int64_t win_text_height(win_T *const wp, const linenr_T start_lnum, const int64_t start_vcol,
const linenr_T end_lnum, const int64_t end_vcol)
{
@@ -620,39 +620,39 @@ int64_t win_text_height(win_T *const wp, const linenr_T start_lnum, const int64_
width2 = MAX(width2, 0);
}
int64_t size = 0;
int64_t height_nofill = 0;
int64_t height_sum = 0;
int64_t height_cur_nofill = 0;
linenr_T lnum = start_lnum;
if (start_vcol >= 0) {
linenr_T lnum_next = lnum;
const bool folded = hasFoldingWin(wp, lnum, &lnum, &lnum_next, true, NULL);
height_nofill = folded ? 1 : plines_win_nofill(wp, lnum, false);
size += height_nofill;
height_cur_nofill = folded ? 1 : plines_win_nofill(wp, lnum, false);
height_sum += height_cur_nofill;
const int64_t row_off = (start_vcol < width1 || width2 <= 0)
? 0
: 1 + (start_vcol - width1) / width2;
size -= MIN(row_off, height_nofill);
height_sum -= MIN(row_off, height_cur_nofill);
lnum = lnum_next + 1;
}
while (lnum <= end_lnum) {
linenr_T lnum_next = lnum;
const bool folded = hasFoldingWin(wp, lnum, &lnum, &lnum_next, true, NULL);
height_nofill = folded ? 1 : plines_win_nofill(wp, lnum, false);
size += win_get_fill(wp, lnum) + height_nofill;
height_cur_nofill = folded ? 1 : plines_win_nofill(wp, lnum, false);
height_sum += win_get_fill(wp, lnum) + height_cur_nofill;
lnum = lnum_next + 1;
}
if (end_vcol >= 0) {
size -= height_nofill;
height_sum -= height_cur_nofill;
const int64_t row_off = end_vcol == 0
? 0
: (end_vcol <= width1 || width2 <= 0)
? 1
: 1 + (end_vcol - width1 + width2 - 1) / width2;
size += MIN(row_off, height_nofill);
height_sum += MIN(row_off, height_cur_nofill);
}
return size;
return height_sum;
}