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feat(api): add "max_height" argument to nvim_win_text_height (#32835)

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Useful to e.g. limit the height to the window height, avoiding unnecessary
work. Or to find out how many buffer lines beyond "start_row" take up a
certain number of logical lines (returned in "end_row" and "end_vcol").
This commit is contained in:
luukvbaal
2025-04-21 13:48:26 +02:00
committed by GitHub
parent 98ec3fdf74
commit 7ba043f0f3
10 changed files with 423 additions and 185 deletions
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1
src/nvim/api/keysets_defs.h
View File

@@ -229,6 +229,7 @@ typedef struct {
Integer end_row;
Integer start_vcol;
Integer end_vcol;
Integer max_height;
} Dict(win_text_height);
typedef struct {

25
src/nvim/api/window.c
View File

@@ -483,10 +483,21 @@ void nvim_win_set_hl_ns(Window window, Integer ns_id, Error *err)
/// When omitted include the whole line.
/// - end_vcol: Ending virtual column index on "end_row",
/// 0-based exclusive, rounded up to full screen lines.
/// When omitted include the whole line.
/// When 0 only include diff filler and virtual lines above
/// "end_row". When omitted include the whole line.
/// - max_height: Don't add the height of lines below the row
/// for which this height is reached. Useful to e.g. limit the
/// height to the window height, avoiding unnecessary work. Or
/// to find out how many buffer lines beyond "start_row" take
/// up a certain number of logical lines (returned in
/// "end_row" and "end_vcol").
/// @return Dict containing text height information, with these keys:
/// - all: The total number of screen lines occupied by the range.
/// - fill: The number of diff filler or virtual lines among them.
/// - end_row: The row on which the returned height is reached (first row of
/// a closed fold).
/// - end_vcol: Ending virtual column in "end_row" where "max_height" or the returned
/// height is reached. 0 if "end_row" is a closed fold.
///
/// @see |virtcol()| for text width.
Dict nvim_win_text_height(Window window, Dict(win_text_height) *opts, Arena *arena, Error *err)
@@ -545,6 +556,14 @@ Dict nvim_win_text_height(Window window, Dict(win_text_height) *opts, Arena *are
});
}
int64_t max = INT64_MAX;
if (HAS_KEY(opts, win_text_height, max_height)) {
VALIDATE_RANGE(opts->max_height > 0, "max_height", {
return rv;
});
max = opts->max_height;
}
if (start_lnum == end_lnum && start_vcol >= 0 && end_vcol >= 0) {
VALIDATE((start_vcol <= end_vcol), "%s", "'start_vcol' is higher than 'end_vcol'", {
return rv;
@@ -552,7 +571,7 @@ Dict nvim_win_text_height(Window window, Dict(win_text_height) *opts, Arena *are
}
int64_t fill = 0;
int64_t all = win_text_height(win, start_lnum, start_vcol, end_lnum, end_vcol, &fill);
int64_t all = win_text_height(win, start_lnum, start_vcol, &end_lnum, &end_vcol, &fill, max);
if (!HAS_KEY(opts, win_text_height, end_row)) {
const int64_t end_fill = win_get_fill(win, line_count + 1);
fill += end_fill;
@@ -560,5 +579,7 @@ Dict nvim_win_text_height(Window window, Dict(win_text_height) *opts, Arena *are
}
PUT_C(rv, "all", INTEGER_OBJ(all));
PUT_C(rv, "fill", INTEGER_OBJ(fill));
PUT_C(rv, "end_row", INTEGER_OBJ(end_lnum - 1));
PUT_C(rv, "end_vcol", INTEGER_OBJ(end_vcol));
return rv;
}