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refactor(plines.c): deduplicate code for virtual text cursor offset

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This commit is contained in:
zeertzjq
2023-08-25 20:05:00 +08:00
parent 93af6d9ed0
commit ff67bb3d05
1 changed files with 19 additions and 13 deletions
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32
src/nvim/plines.c
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@@ -369,13 +369,7 @@ int win_lbr_chartabsize(chartabsize_T *cts, int *headp)
head += (max_head_vcol - (vcol + head_prev + prev_rem)
+ width2 - 1) / width2 * head_mid;
} else if (max_head_vcol < 0) {
int off = 0;
if (c != NUL || !(State & MODE_NORMAL)) {
off += cts->cts_cur_text_width_left;
}
if (c != NUL && (State & MODE_NORMAL)) {
off += cts->cts_cur_text_width_right;
}
int off = virt_text_cursor_off(cts, c == NUL);
if (off >= prev_rem) {
head += (1 + (off - prev_rem) / width) * head_mid;
}
@@ -453,6 +447,23 @@ static bool in_win_border(win_T *wp, colnr_T vcol)
return (vcol - width1) % width2 == width2 - 1;
}
/// Get how many virtual columns inline virtual text should offset the cursor.
///
/// @param cts should contain information stored by win_lbr_chartabsize()
/// about widths of left and right gravity virtual text
/// @param on_NUL whether this is the end of the line
static int virt_text_cursor_off(chartabsize_T *cts, bool on_NUL)
{
int off = 0;
if (!on_NUL || !(State & MODE_NORMAL)) {
off += cts->cts_cur_text_width_left;
}
if (!on_NUL && (State & MODE_NORMAL)) {
off += cts->cts_cur_text_width_right;
}
return off;
}
/// Get virtual column number of pos.
/// start: on the first position of this character (TAB, ctrl)
/// cursor: where the cursor is on this character (first char, except for TAB)
@@ -594,12 +605,7 @@ void getvcol(win_T *wp, pos_T *pos, colnr_T *start, colnr_T *cursor, colnr_T *en
// cursor at end
*cursor = vcol + incr - 1;
} else {
if (!on_NUL || !(State & MODE_NORMAL)) {
vcol += cts.cts_cur_text_width_left;
}
if (!on_NUL && (State & MODE_NORMAL)) {
vcol += cts.cts_cur_text_width_right;
}
vcol += virt_text_cursor_off(&cts, on_NUL);
// cursor at start
*cursor = vcol + head;
}