File: //home/ubuntu/neovim/src/nvim/drawline.c
// drawline.c: Functions for drawing window lines on the screen.
// This is the middle level, drawscreen.c is the top and grid.c the lower level.
#include <assert.h>
#include <limits.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "nvim/ascii_defs.h"
#include "nvim/buffer.h"
#include "nvim/buffer_defs.h"
#include "nvim/charset.h"
#include "nvim/cursor.h"
#include "nvim/cursor_shape.h"
#include "nvim/decoration.h"
#include "nvim/decoration_defs.h"
#include "nvim/decoration_provider.h"
#include "nvim/diff.h"
#include "nvim/drawline.h"
#include "nvim/drawscreen.h"
#include "nvim/eval.h"
#include "nvim/fold.h"
#include "nvim/fold_defs.h"
#include "nvim/globals.h"
#include "nvim/grid.h"
#include "nvim/grid_defs.h"
#include "nvim/highlight.h"
#include "nvim/highlight_defs.h"
#include "nvim/highlight_group.h"
#include "nvim/indent.h"
#include "nvim/mark_defs.h"
#include "nvim/marktree_defs.h"
#include "nvim/match.h"
#include "nvim/mbyte.h"
#include "nvim/mbyte_defs.h"
#include "nvim/memline.h"
#include "nvim/memory.h"
#include "nvim/move.h"
#include "nvim/option.h"
#include "nvim/option_vars.h"
#include "nvim/os/os_defs.h"
#include "nvim/plines.h"
#include "nvim/pos_defs.h"
#include "nvim/quickfix.h"
#include "nvim/sign_defs.h"
#include "nvim/spell.h"
#include "nvim/state.h"
#include "nvim/state_defs.h"
#include "nvim/statusline.h"
#include "nvim/statusline_defs.h"
#include "nvim/strings.h"
#include "nvim/syntax.h"
#include "nvim/terminal.h"
#include "nvim/types_defs.h"
#include "nvim/ui.h"
#include "nvim/ui_defs.h"
#include "nvim/vim_defs.h"
#define MB_FILLER_CHAR '<' // character used when a double-width character doesn't fit.
/// structure with variables passed between win_line() and other functions
typedef struct {
const linenr_T lnum; ///< line number to be drawn
const foldinfo_T foldinfo; ///< fold info for this line
const int startrow; ///< first row in the window to be drawn
int row; ///< row in the window, excl w_winrow
colnr_T vcol; ///< virtual column, before wrapping
int col; ///< visual column on screen, after wrapping
int boguscols; ///< nonexistent columns added to "col" to force wrapping
int old_boguscols; ///< bogus boguscols
int vcol_off_co; ///< offset for concealed characters
int off; ///< offset relative start of line
int cul_attr; ///< set when 'cursorline' active
int line_attr; ///< attribute for the whole line
int line_attr_lowprio; ///< low-priority attribute for the line
int fromcol; ///< start of inverting
int tocol; ///< end of inverting
colnr_T vcol_sbr; ///< virtual column after showbreak
bool need_showbreak; ///< overlong line, skipping first x chars
int char_attr; ///< attributes for next character
int n_extra; ///< number of extra bytes
int n_attr; ///< chars with special attr
char *p_extra; ///< string of extra chars, plus NUL, only used
///< when sc_extra and sc_final are NUL
int extra_attr; ///< attributes for p_extra
schar_T sc_extra; ///< extra chars, all the same
schar_T sc_final; ///< final char, mandatory if set
bool extra_for_extmark; ///< n_extra set for inline virtual text
char extra[11]; ///< must be as large as transchar_charbuf[] in charset.c
hlf_T diff_hlf; ///< type of diff highlighting
int n_virt_lines; ///< nr of virtual lines
int filler_lines; ///< nr of filler lines to be drawn
int filler_todo; ///< nr of filler lines still to do + 1
SignTextAttrs sattrs[SIGN_SHOW_MAX]; ///< sign attributes for the sign column
/// do consider wrapping in linebreak mode only after encountering
/// a non whitespace char
bool need_lbr;
VirtText virt_inline;
size_t virt_inline_i;
HlMode virt_inline_hl_mode;
bool reset_extra_attr;
int skip_cells; ///< nr of cells to skip for w_leftcol
///< or w_skipcol or concealing
int skipped_cells; ///< nr of skipped cells for virtual text
///< to be added to wlv.vcol later
int *color_cols; ///< if not NULL, highlight colorcolumn using according columns array
} winlinevars_T;
#ifdef INCLUDE_GENERATED_DECLARATIONS
# include "drawline.c.generated.h"
#endif
static char *extra_buf = NULL;
static size_t extra_buf_size = 0;
static char *get_extra_buf(size_t size)
{
size = MAX(size, 64);
if (extra_buf_size < size) {
xfree(extra_buf);
extra_buf = xmalloc(size);
extra_buf_size = size;
}
return extra_buf;
}
#ifdef EXITFREE
void drawline_free_all_mem(void)
{
xfree(extra_buf);
}
#endif
/// Advance wlv->color_cols if not NULL
static void advance_color_col(winlinevars_T *wlv, int vcol)
{
if (wlv->color_cols) {
while (*wlv->color_cols >= 0 && vcol > *wlv->color_cols) {
wlv->color_cols++;
}
if (*wlv->color_cols < 0) {
wlv->color_cols = NULL;
}
}
}
/// Used when 'cursorlineopt' contains "screenline": compute the margins between
/// which the highlighting is used.
static void margin_columns_win(win_T *wp, int *left_col, int *right_col)
{
// cache previous calculations depending on w_virtcol
static int saved_w_virtcol;
static win_T *prev_wp;
static int prev_left_col;
static int prev_right_col;
static int prev_col_off;
int cur_col_off = win_col_off(wp);
int width1;
int width2;
if (saved_w_virtcol == wp->w_virtcol && prev_wp == wp
&& prev_col_off == cur_col_off) {
*right_col = prev_right_col;
*left_col = prev_left_col;
return;
}
width1 = wp->w_width_inner - cur_col_off;
width2 = width1 + win_col_off2(wp);
*left_col = 0;
*right_col = width1;
if (wp->w_virtcol >= (colnr_T)width1) {
*right_col = width1 + ((wp->w_virtcol - width1) / width2 + 1) * width2;
}
if (wp->w_virtcol >= (colnr_T)width1 && width2 > 0) {
*left_col = (wp->w_virtcol - width1) / width2 * width2 + width1;
}
// cache values
prev_left_col = *left_col;
prev_right_col = *right_col;
prev_wp = wp;
saved_w_virtcol = wp->w_virtcol;
prev_col_off = cur_col_off;
}
/// Put a single char from an UTF-8 buffer into a line buffer.
///
/// If `*pp` is a double-width char and only one cell is left, emit a space,
/// and don't advance *pp
///
/// Handles composing chars
static int line_putchar(buf_T *buf, const char **pp, schar_T *dest, int maxcells, int vcol)
{
// Caller should handle overwriting the right half of a double-width char.
assert(dest[0] != 0);
const char *p = *pp;
int cells = utf_ptr2cells(p);
int c_len = utfc_ptr2len(p);
assert(maxcells > 0);
if (cells > maxcells) {
dest[0] = schar_from_ascii(' ');
return 1;
}
if (*p == TAB) {
cells = MIN(tabstop_padding(vcol, buf->b_p_ts, buf->b_p_vts_array), maxcells);
}
// When overwriting the left half of a double-width char, clear the right half.
if (cells < maxcells && dest[cells] == 0) {
dest[cells] = schar_from_ascii(' ');
}
if (*p == TAB) {
for (int c = 0; c < cells; c++) {
dest[c] = schar_from_ascii(' ');
}
} else {
int u8c;
dest[0] = utfc_ptr2schar(p, &u8c);
if (cells > 1) {
dest[1] = 0;
}
}
*pp += c_len;
return cells;
}
static void draw_virt_text(win_T *wp, buf_T *buf, int col_off, int *end_col, int win_row)
{
DecorState *state = &decor_state;
const int max_col = wp->w_grid.cols;
int right_pos = max_col;
bool do_eol = state->eol_col > -1;
for (size_t i = 0; i < kv_size(state->active); i++) {
DecorRange *item = &kv_A(state->active, i);
if (!(item->start_row == state->row && decor_virt_pos(item))) {
continue;
}
DecorVirtText *vt = NULL;
if (item->kind == kDecorKindVirtText) {
assert(item->data.vt);
vt = item->data.vt;
}
if (decor_virt_pos(item) && item->draw_col == -1) {
bool updated = true;
VirtTextPos pos = decor_virt_pos_kind(item);
if (pos == kVPosRightAlign) {
right_pos -= vt->width;
item->draw_col = right_pos;
} else if (pos == kVPosEndOfLine && do_eol) {
item->draw_col = state->eol_col;
} else if (pos == kVPosWinCol) {
item->draw_col = MAX(col_off + vt->col, 0);
} else {
updated = false;
}
if (updated && (item->draw_col < 0 || item->draw_col >= wp->w_grid.cols)) {
// Out of window, don't draw at all.
item->draw_col = INT_MIN;
}
}
if (item->draw_col < 0) {
continue;
}
if (item->kind == kDecorKindUIWatched) {
// send mark position to UI
WinExtmark m = { (NS)item->data.ui.ns_id, item->data.ui.mark_id, win_row, item->draw_col };
kv_push(win_extmark_arr, m);
}
if (vt) {
int vcol = item->draw_col - col_off;
int col = draw_virt_text_item(buf, item->draw_col, vt->data.virt_text,
vt->hl_mode, max_col, vcol);
if (vt->pos == kVPosEndOfLine && do_eol) {
state->eol_col = col + 1;
}
*end_col = MAX(*end_col, col);
}
if (!vt || !(vt->flags & kVTRepeatLinebreak)) {
item->draw_col = INT_MIN; // deactivate
}
}
}
static int draw_virt_text_item(buf_T *buf, int col, VirtText vt, HlMode hl_mode, int max_col,
int vcol)
{
const char *p = "";
int virt_attr = 0;
size_t virt_pos = 0;
while (col < max_col) {
if (!*p) {
if (virt_pos >= kv_size(vt)) {
break;
}
virt_attr = 0;
p = next_virt_text_chunk(vt, &virt_pos, &virt_attr);
if (p == NULL) {
break;
}
}
if (*p == NUL) {
continue;
}
int attr;
bool through = false;
if (hl_mode == kHlModeCombine) {
attr = hl_combine_attr(linebuf_attr[col], virt_attr);
} else if (hl_mode == kHlModeBlend) {
through = (*p == ' ');
attr = hl_blend_attrs(linebuf_attr[col], virt_attr, &through);
} else {
attr = virt_attr;
}
schar_T dummy[2] = { schar_from_ascii(' '), schar_from_ascii(' ') };
int maxcells = max_col - col;
// When overwriting the right half of a double-width char, clear the left half.
if (!through && linebuf_char[col] == 0) {
assert(col > 0);
linebuf_char[col - 1] = schar_from_ascii(' ');
// Clear the right half as well for the assertion in line_putchar().
linebuf_char[col] = schar_from_ascii(' ');
}
int cells = line_putchar(buf, &p, through ? dummy : &linebuf_char[col],
maxcells, vcol);
for (int c = 0; c < cells; c++) {
linebuf_attr[col] = attr;
col++;
}
vcol += cells;
}
return col;
}
// TODO(bfredl): integrate with grid.c linebuf code? madness?
static void draw_col_buf(win_T *wp, winlinevars_T *wlv, const char *text, size_t len, int attr,
bool vcol)
{
const char *ptr = text;
while (ptr < text + len && wlv->off < wp->w_grid.cols) {
int cells = line_putchar(wp->w_buffer, &ptr, &linebuf_char[wlv->off],
wp->w_grid.cols - wlv->off, wlv->off);
int myattr = attr;
if (vcol) {
advance_color_col(wlv, wlv->vcol);
if (wlv->color_cols && wlv->vcol == *wlv->color_cols) {
myattr = hl_combine_attr(win_hl_attr(wp, HLF_MC), myattr);
}
}
for (int c = 0; c < cells; c++) {
linebuf_attr[wlv->off] = myattr;
linebuf_vcol[wlv->off] = vcol ? wlv->vcol++ : -1;
wlv->off++;
}
}
}
static void draw_col_fill(winlinevars_T *wlv, schar_T fillchar, int width, int attr)
{
for (int i = 0; i < width; i++) {
linebuf_char[wlv->off] = fillchar;
linebuf_attr[wlv->off] = attr;
wlv->off++;
}
}
/// Return true if CursorLineSign highlight is to be used.
static bool use_cursor_line_highlight(win_T *wp, linenr_T lnum)
{
return wp->w_p_cul
&& lnum == wp->w_cursorline
&& (wp->w_p_culopt_flags & CULOPT_NBR);
}
/// Setup for drawing the 'foldcolumn', if there is one.
static void draw_foldcolumn(win_T *wp, winlinevars_T *wlv)
{
int fdc = compute_foldcolumn(wp, 0);
if (fdc > 0) {
int attr = win_hl_attr(wp, use_cursor_line_highlight(wp, wlv->lnum) ? HLF_CLF : HLF_FC);
fill_foldcolumn(wp, wlv->foldinfo, wlv->lnum, attr, fdc, &wlv->off, NULL);
}
}
/// Draw the foldcolumn or fill "out_buffer". Assume monocell characters.
///
/// @param fdc Current width of the foldcolumn
/// @param[out] wlv_off Pointer to linebuf offset, incremented for default column
/// @param[out] out_buffer Char array to fill, only used for 'statuscolumn'
void fill_foldcolumn(win_T *wp, foldinfo_T foldinfo, linenr_T lnum, int attr, int fdc, int *wlv_off,
schar_T *out_buffer)
{
bool closed = foldinfo.fi_level != 0 && foldinfo.fi_lines > 0;
int level = foldinfo.fi_level;
// If the column is too narrow, we start at the lowest level that
// fits and use numbers to indicate the depth.
int first_level = MAX(level - fdc - closed + 1, 1);
int closedcol = MIN(fdc, level);
for (int i = 0; i < fdc; i++) {
schar_T symbol = 0;
if (i >= level) {
symbol = schar_from_ascii(' ');
} else if (i == closedcol - 1 && closed) {
symbol = wp->w_p_fcs_chars.foldclosed;
} else if (foldinfo.fi_lnum == lnum && first_level + i >= foldinfo.fi_low_level) {
symbol = wp->w_p_fcs_chars.foldopen;
} else if (first_level == 1) {
symbol = wp->w_p_fcs_chars.foldsep;
} else if (first_level + i <= 9) {
symbol = schar_from_ascii('0' + first_level + i);
} else {
symbol = schar_from_ascii('>');
}
if (out_buffer) {
out_buffer[i] = symbol;
} else {
linebuf_vcol[*wlv_off] = i >= level ? -1 : (i == closedcol - 1 && closed) ? -2 : -3;
linebuf_attr[*wlv_off] = attr;
linebuf_char[(*wlv_off)++] = symbol;
}
}
}
/// Get information needed to display the sign in line "wlv->lnum" in window "wp".
/// If "nrcol" is true, the sign is going to be displayed in the number column.
/// Otherwise the sign is going to be displayed in the sign column. If there is no
/// sign, draw blank cells instead.
static void draw_sign(bool nrcol, win_T *wp, winlinevars_T *wlv, int sign_idx, int sign_cul_attr)
{
SignTextAttrs sattr = wlv->sattrs[sign_idx];
if (sattr.text[0] && wlv->row == wlv->startrow + wlv->filler_lines && wlv->filler_todo <= 0) {
int attr = (use_cursor_line_highlight(wp, wlv->lnum) && sign_cul_attr)
? sign_cul_attr : sattr.hl_id ? syn_id2attr(sattr.hl_id) : 0;
int fill = nrcol ? number_width(wp) + 1 : SIGN_WIDTH;
draw_col_fill(wlv, schar_from_ascii(' '), fill, attr);
int sign_pos = wlv->off - SIGN_WIDTH - (int)nrcol;
assert(sign_pos >= 0);
linebuf_char[sign_pos] = sattr.text[0];
linebuf_char[sign_pos + 1] = sattr.text[1];
} else {
assert(!nrcol); // handled in draw_lnum_col()
int attr = win_hl_attr(wp, use_cursor_line_highlight(wp, wlv->lnum) ? HLF_CLS : HLF_SC);
draw_col_fill(wlv, schar_from_ascii(' '), SIGN_WIDTH, attr);
}
}
static inline void get_line_number_str(win_T *wp, linenr_T lnum, char *buf, size_t buf_len)
{
linenr_T num;
char *fmt = "%*" PRIdLINENR " ";
if (wp->w_p_nu && !wp->w_p_rnu) {
// 'number' + 'norelativenumber'
num = lnum;
} else {
// 'relativenumber', don't use negative numbers
num = abs(get_cursor_rel_lnum(wp, lnum));
if (num == 0 && wp->w_p_nu && wp->w_p_rnu) {
// 'number' + 'relativenumber'
num = lnum;
fmt = "%-*" PRIdLINENR " ";
}
}
snprintf(buf, buf_len, fmt, number_width(wp), num);
}
/// Return true if CursorLineNr highlight is to be used for the number column.
/// - 'cursorline' must be set
/// - "wlv->lnum" must be the cursor line
/// - 'cursorlineopt' has "number"
/// - don't highlight filler lines (when in diff mode)
/// - When line is wrapped and 'cursorlineopt' does not have "line", only highlight the line number
/// itself on the first screenline of the wrapped line, otherwise highlight the number column of
/// all screenlines of the wrapped line.
static bool use_cursor_line_nr(win_T *wp, winlinevars_T *wlv)
{
return wp->w_p_cul
&& wlv->lnum == wp->w_cursorline
&& (wp->w_p_culopt_flags & CULOPT_NBR)
&& (wlv->row == wlv->startrow + wlv->filler_lines
|| (wlv->row > wlv->startrow + wlv->filler_lines
&& (wp->w_p_culopt_flags & CULOPT_LINE)));
}
static int get_line_number_attr(win_T *wp, winlinevars_T *wlv)
{
if (use_cursor_line_nr(wp, wlv)) {
// TODO(vim): Can we use CursorLine instead of CursorLineNr
// when CursorLineNr isn't set?
return win_hl_attr(wp, HLF_CLN);
}
if (wp->w_p_rnu) {
if (wlv->lnum < wp->w_cursor.lnum) {
// Use LineNrAbove
return win_hl_attr(wp, HLF_LNA);
}
if (wlv->lnum > wp->w_cursor.lnum) {
// Use LineNrBelow
return win_hl_attr(wp, HLF_LNB);
}
}
return win_hl_attr(wp, HLF_N);
}
/// Display the absolute or relative line number. After the first row fill with
/// blanks when the 'n' flag isn't in 'cpo'.
static void draw_lnum_col(win_T *wp, winlinevars_T *wlv, int sign_num_attr, int sign_cul_attr)
{
bool has_cpo_n = vim_strchr(p_cpo, CPO_NUMCOL) != NULL;
if ((wp->w_p_nu || wp->w_p_rnu)
&& (wlv->row == wlv->startrow + wlv->filler_lines || !has_cpo_n)
// there is no line number in a wrapped line when "n" is in
// 'cpoptions', but 'breakindent' assumes it anyway.
&& !((has_cpo_n && !wp->w_p_bri) && wp->w_skipcol > 0 && wlv->lnum == wp->w_topline)) {
// If 'signcolumn' is set to 'number' and a sign is present in "lnum",
// then display the sign instead of the line number.
if (wp->w_minscwidth == SCL_NUM && wlv->sattrs[0].text[0]
&& wlv->row == wlv->startrow + wlv->filler_lines && wlv->filler_todo <= 0) {
draw_sign(true, wp, wlv, 0, sign_cul_attr);
} else {
// Draw the line number (empty space after wrapping).
int width = number_width(wp) + 1;
int attr = (sign_num_attr > 0 && wlv->filler_todo <= 0)
? sign_num_attr : get_line_number_attr(wp, wlv);
if (wlv->row == wlv->startrow + wlv->filler_lines
&& (wp->w_skipcol == 0 || wlv->row > 0 || (wp->w_p_nu && wp->w_p_rnu))) {
char buf[32];
get_line_number_str(wp, wlv->lnum, buf, sizeof(buf));
if (wp->w_skipcol > 0 && wlv->startrow == 0) {
for (char *c = buf; *c == ' '; c++) {
*c = '-';
}
}
if (wp->w_p_rl) { // reverse line numbers
char *num = skipwhite(buf);
rl_mirror_ascii(num, skiptowhite(num));
}
draw_col_buf(wp, wlv, buf, (size_t)width, attr, false);
} else {
draw_col_fill(wlv, schar_from_ascii(' '), width, attr);
}
}
}
}
/// Build and draw the 'statuscolumn' string for line "lnum" in window "wp".
static void draw_statuscol(win_T *wp, winlinevars_T *wlv, linenr_T lnum, int virtnum, int col_rows,
statuscol_T *stcp)
{
// When called for the first non-filler row of line "lnum" set num v:vars
linenr_T relnum = virtnum == 0 ? abs(get_cursor_rel_lnum(wp, lnum)) : -1;
char buf[MAXPATHL];
// When a buffer's line count has changed, make a best estimate for the full
// width of the status column by building with the largest possible line number.
// Add potentially truncated width and rebuild before drawing anything.
if (wp->w_statuscol_line_count != wp->w_nrwidth_line_count) {
wp->w_statuscol_line_count = wp->w_nrwidth_line_count;
set_vim_var_nr(VV_VIRTNUM, 0);
int width = build_statuscol_str(wp, wp->w_nrwidth_line_count,
wp->w_nrwidth_line_count, buf, stcp);
if (width > stcp->width) {
int addwidth = MIN(width - stcp->width, MAX_STCWIDTH - stcp->width);
wp->w_nrwidth += addwidth;
wp->w_nrwidth_width = wp->w_nrwidth;
if (col_rows > 0) {
// If only column is being redrawn, we now need to redraw the text as well
wp->w_redr_statuscol = true;
return;
}
stcp->width += addwidth;
wp->w_valid &= ~VALID_WCOL;
}
}
set_vim_var_nr(VV_VIRTNUM, virtnum);
int width = build_statuscol_str(wp, lnum, relnum, buf, stcp);
// Force a redraw in case of error or when truncated
if (*wp->w_p_stc == NUL || (width > stcp->width && stcp->width < MAX_STCWIDTH)) {
if (*wp->w_p_stc == NUL) { // 'statuscolumn' reset due to error
wp->w_nrwidth_line_count = 0;
wp->w_nrwidth = (wp->w_p_nu || wp->w_p_rnu) * number_width(wp);
} else { // Avoid truncating 'statuscolumn'
wp->w_nrwidth += MIN(width - stcp->width, MAX_STCWIDTH - stcp->width);
wp->w_nrwidth_width = wp->w_nrwidth;
}
wp->w_redr_statuscol = true;
return;
}
char *p = buf;
char transbuf[MAXPATHL];
int attr = stcp->num_attr;
size_t len = strlen(buf);
// Draw each segment with the specified highlighting.
for (stl_hlrec_t *sp = stcp->hlrec; sp->start != NULL; sp++) {
ptrdiff_t textlen = sp->start - p;
// Make all characters printable.
size_t translen = transstr_buf(p, textlen, transbuf, MAXPATHL, true);
draw_col_buf(wp, wlv, transbuf, translen, attr, false);
p = sp->start;
int hl = sp->userhl;
attr = hl < 0 ? syn_id2attr(-hl) : stcp->num_attr;
}
size_t translen = transstr_buf(p, buf + len - p, transbuf, MAXPATHL, true);
draw_col_buf(wp, wlv, transbuf, translen, attr, false);
draw_col_fill(wlv, schar_from_ascii(' '), stcp->width - width, stcp->num_attr);
}
static void handle_breakindent(win_T *wp, winlinevars_T *wlv)
{
// draw 'breakindent': indent wrapped text accordingly
// if wlv->need_showbreak is set, breakindent also applies
if (wp->w_p_bri && (wlv->row > wlv->startrow + wlv->filler_lines
|| wlv->need_showbreak)) {
int attr = 0;
if (wlv->diff_hlf != (hlf_T)0) {
attr = win_hl_attr(wp, (int)wlv->diff_hlf);
}
int num = get_breakindent_win(wp, ml_get_buf(wp->w_buffer, wlv->lnum));
if (wlv->row == wlv->startrow) {
num -= win_col_off2(wp);
if (wlv->n_extra < 0) {
num = 0;
}
}
colnr_T vcol_before = wlv->vcol;
for (int i = 0; i < num; i++) {
linebuf_char[wlv->off] = schar_from_ascii(' ');
advance_color_col(wlv, wlv->vcol);
int myattr = attr;
if (wlv->color_cols && wlv->vcol == *wlv->color_cols) {
myattr = hl_combine_attr(win_hl_attr(wp, HLF_MC), myattr);
}
linebuf_attr[wlv->off] = myattr;
linebuf_vcol[wlv->off] = wlv->vcol++; // These are vcols, sorry I don't make the rules
wlv->off++;
}
// Correct start of highlighted area for 'breakindent',
if (wlv->fromcol >= vcol_before && wlv->fromcol < wlv->vcol) {
wlv->fromcol = wlv->vcol;
}
// Correct end of highlighted area for 'breakindent',
// required wen 'linebreak' is also set.
if (wlv->tocol == vcol_before) {
wlv->tocol = wlv->vcol;
}
}
if (wp->w_skipcol > 0 && wlv->startrow == 0 && wp->w_p_wrap && wp->w_briopt_sbr) {
wlv->need_showbreak = false;
}
}
static void handle_showbreak_and_filler(win_T *wp, winlinevars_T *wlv)
{
int remaining = wp->w_grid.cols - wlv->off;
if (wlv->filler_todo > wlv->filler_lines - wlv->n_virt_lines) {
// TODO(bfredl): check this doesn't inhibit TUI-style
// clear-to-end-of-line.
draw_col_fill(wlv, schar_from_ascii(' '), remaining, 0);
} else if (wlv->filler_todo > 0) {
// Draw "deleted" diff line(s)
schar_T c = wp->w_p_fcs_chars.diff;
draw_col_fill(wlv, c, remaining, win_hl_attr(wp, HLF_DED));
}
char *const sbr = get_showbreak_value(wp);
if (*sbr != NUL && wlv->need_showbreak) {
// Draw 'showbreak' at the start of each broken line.
// Combine 'showbreak' with 'cursorline', prioritizing 'showbreak'.
int attr = hl_combine_attr(wlv->cul_attr, win_hl_attr(wp, HLF_AT));
colnr_T vcol_before = wlv->vcol;
draw_col_buf(wp, wlv, sbr, strlen(sbr), attr, true);
wlv->vcol_sbr = wlv->vcol;
// Correct start of highlighted area for 'showbreak'.
if (wlv->fromcol >= vcol_before && wlv->fromcol < wlv->vcol) {
wlv->fromcol = wlv->vcol;
}
// Correct end of highlighted area for 'showbreak',
// required when 'linebreak' is also set.
if (wlv->tocol == vcol_before) {
wlv->tocol = wlv->vcol;
}
}
if (wp->w_skipcol == 0 || wlv->startrow > 0 || !wp->w_p_wrap || !wp->w_briopt_sbr) {
wlv->need_showbreak = false;
}
}
static void apply_cursorline_highlight(win_T *wp, winlinevars_T *wlv)
{
wlv->cul_attr = win_hl_attr(wp, HLF_CUL);
HlAttrs ae = syn_attr2entry(wlv->cul_attr);
// We make a compromise here (#7383):
// * low-priority CursorLine if fg is not set
// * high-priority ("same as Vim" priority) CursorLine if fg is set
if (ae.rgb_fg_color == -1 && ae.cterm_fg_color == 0) {
wlv->line_attr_lowprio = wlv->cul_attr;
} else {
if (!(State & MODE_INSERT) && bt_quickfix(wp->w_buffer)
&& qf_current_entry(wp) == wlv->lnum) {
wlv->line_attr = hl_combine_attr(wlv->cul_attr, wlv->line_attr);
} else {
wlv->line_attr = wlv->cul_attr;
}
}
}
/// Checks if there is more inline virtual text that need to be drawn.
static bool has_more_inline_virt(winlinevars_T *wlv, ptrdiff_t v)
{
if (wlv->virt_inline_i < kv_size(wlv->virt_inline)) {
return true;
}
DecorState *state = &decor_state;
for (size_t i = 0; i < kv_size(state->active); i++) {
DecorRange *item = &kv_A(state->active, i);
if (item->start_row != state->row
|| item->kind != kDecorKindVirtText
|| item->data.vt->pos != kVPosInline
|| item->data.vt->width == 0) {
continue;
}
if (item->draw_col >= -1 && item->start_col >= v) {
return true;
}
}
return false;
}
static void handle_inline_virtual_text(win_T *wp, winlinevars_T *wlv, ptrdiff_t v, bool selected)
{
while (wlv->n_extra == 0) {
if (wlv->virt_inline_i >= kv_size(wlv->virt_inline)) {
// need to find inline virtual text
wlv->virt_inline = VIRTTEXT_EMPTY;
wlv->virt_inline_i = 0;
DecorState *state = &decor_state;
for (size_t i = 0; i < kv_size(state->active); i++) {
DecorRange *item = &kv_A(state->active, i);
if (item->draw_col == -3) {
// No more inline virtual text before this non-inline virtual text item,
// so its position can be decided now.
decor_init_draw_col(wlv->off, selected, item);
}
if (item->start_row != state->row
|| item->kind != kDecorKindVirtText
|| item->data.vt->pos != kVPosInline
|| item->data.vt->width == 0) {
continue;
}
if (item->draw_col >= -1 && item->start_col == v) {
wlv->virt_inline = item->data.vt->data.virt_text;
wlv->virt_inline_hl_mode = item->data.vt->hl_mode;
item->draw_col = INT_MIN;
break;
}
}
if (!kv_size(wlv->virt_inline)) {
// no more inline virtual text here
break;
}
} else {
// already inside existing inline virtual text with multiple chunks
int attr = 0;
char *text = next_virt_text_chunk(wlv->virt_inline, &wlv->virt_inline_i, &attr);
if (text == NULL) {
continue;
}
wlv->p_extra = text;
wlv->n_extra = (int)strlen(text);
if (wlv->n_extra == 0) {
continue;
}
wlv->sc_extra = NUL;
wlv->sc_final = NUL;
wlv->extra_attr = attr;
wlv->n_attr = mb_charlen(text);
// If the text didn't reach until the first window
// column we need to skip cells.
if (wlv->skip_cells > 0) {
// FIXME: this should use virt_text_width instead
int virt_text_len = wlv->n_attr;
if (virt_text_len > wlv->skip_cells) {
int len = mb_charlen2bytelen(wlv->p_extra, wlv->skip_cells);
wlv->n_extra -= len;
wlv->p_extra += len;
wlv->n_attr -= wlv->skip_cells;
// Skipped cells needed to be accounted for in vcol.
wlv->skipped_cells += wlv->skip_cells;
wlv->skip_cells = 0;
} else {
// the whole text is left of the window, drop
// it and advance to the next one
wlv->skip_cells -= virt_text_len;
// Skipped cells needed to be accounted for in vcol.
wlv->skipped_cells += virt_text_len;
wlv->n_attr = 0;
wlv->n_extra = 0;
// go to the start so the next virtual text chunk can be selected.
continue;
}
}
assert(wlv->n_extra > 0);
wlv->extra_for_extmark = true;
}
}
}
/// Start a screen line at column zero.
static void win_line_start(win_T *wp, winlinevars_T *wlv)
{
wlv->col = 0;
wlv->off = 0;
wlv->need_lbr = false;
for (int i = 0; i < wp->w_grid.cols; i++) {
linebuf_char[i] = schar_from_ascii(' ');
linebuf_attr[i] = 0;
linebuf_vcol[i] = -1;
}
}
static void fix_for_boguscols(winlinevars_T *wlv)
{
wlv->n_extra += wlv->vcol_off_co;
wlv->vcol -= wlv->vcol_off_co;
wlv->vcol_off_co = 0;
wlv->col -= wlv->boguscols;
wlv->old_boguscols = wlv->boguscols;
wlv->boguscols = 0;
}
static int get_rightmost_vcol(win_T *wp, const int *color_cols)
{
int ret = 0;
if (wp->w_p_cuc) {
ret = wp->w_virtcol;
}
if (color_cols) {
// determine rightmost colorcolumn to possibly draw
for (int i = 0; color_cols[i] >= 0; i++) {
ret = MAX(ret, color_cols[i]);
}
}
return ret;
}
/// Display line "lnum" of window "wp" on the screen.
/// wp->w_virtcol needs to be valid.
///
/// @param lnum line to display
/// @param startrow first row relative to window grid
/// @param endrow last grid row to be redrawn
/// @param col_rows set to the height of the line when only updating the columns,
/// otherwise set to 0
/// @param spv 'spell' related variables kept between calls for "wp"
/// @param foldinfo fold info for this line
/// @param[in, out] providers decoration providers active this line
/// items will be disables if they cause errors
/// or explicitly return `false`.
///
/// @return the number of last row the line occupies.
int win_line(win_T *wp, linenr_T lnum, int startrow, int endrow, int col_rows, spellvars_T *spv,
foldinfo_T foldinfo)
{
colnr_T vcol_prev = -1; // "wlv.vcol" of previous character
ScreenGrid *grid = &wp->w_grid; // grid specific to the window
const bool has_fold = foldinfo.fi_level != 0 && foldinfo.fi_lines > 0;
const bool has_foldtext = has_fold && *wp->w_p_fdt != NUL;
const bool is_wrapped = wp->w_p_wrap
&& !has_fold; // Never wrap folded lines
int saved_attr2 = 0; // char_attr saved for n_attr
int n_attr3 = 0; // chars with overruling special attr
int saved_attr3 = 0; // char_attr saved for n_attr3
int fromcol_prev = -2; // start of inverting after cursor
bool noinvcur = false; // don't invert the cursor
bool lnum_in_visual_area = false;
bool attr_pri = false; // char_attr has priority
bool area_highlighting = false; // Visual or incsearch highlighting in this line
int vi_attr = 0; // attributes for Visual and incsearch highlighting
int area_attr = 0; // attributes desired by highlighting
int search_attr = 0; // attributes desired by 'hlsearch'
int vcol_save_attr = 0; // saved attr for 'cursorcolumn'
int decor_attr = 0; // attributes desired by syntax and extmarks
bool has_syntax = false; // this buffer has syntax highl.
int folded_attr = 0; // attributes for folded line
int eol_hl_off = 0; // 1 if highlighted char after EOL
#define SPWORDLEN 150
char nextline[SPWORDLEN * 2]; // text with start of the next line
int nextlinecol = 0; // column where nextline[] starts
int nextline_idx = 0; // index in nextline[] where next line
// starts
int spell_attr = 0; // attributes desired by spelling
int word_end = 0; // last byte with same spell_attr
int cur_checked_col = 0; // checked column for current line
bool extra_check = 0; // has syntax or linebreak
int multi_attr = 0; // attributes desired by multibyte
int mb_l = 1; // multi-byte byte length
int mb_c = 0; // decoded multi-byte character
schar_T mb_schar = 0; // complete screen char
int change_start = MAXCOL; // first col of changed area
int change_end = -1; // last col of changed area
bool in_multispace = false; // in multiple consecutive spaces
int multispace_pos = 0; // position in lcs-multispace string
bool search_attr_from_match = false; // if search_attr is from :match
bool has_decor = false; // this buffer has decoration
int saved_search_attr = 0; // search_attr to be used when n_extra goes to zero
int saved_area_attr = 0; // idem for area_attr
int saved_decor_attr = 0; // idem for decor_attr
bool saved_search_attr_from_match = false;
int win_col_offset = 0; // offset for window columns
bool area_active = false; // whether in Visual selection, for virtual text
bool decor_need_recheck = false; // call decor_recheck_draw_col() at next char
char buf_fold[FOLD_TEXT_LEN]; // Hold value returned by get_foldtext
VirtText fold_vt = VIRTTEXT_EMPTY;
char *foldtext_free = NULL;
// 'cursorlineopt' has "screenline" and cursor is in this line
bool cul_screenline = false;
// margin columns for the screen line, needed for when 'cursorlineopt'
// contains "screenline"
int left_curline_col = 0;
int right_curline_col = 0;
int match_conc = 0; ///< cchar for match functions
bool on_last_col = false;
int syntax_flags = 0;
int syntax_seqnr = 0;
int prev_syntax_id = 0;
int conceal_attr = win_hl_attr(wp, HLF_CONCEAL);
bool is_concealing = false;
bool did_wcol = false;
#define vcol_hlc(wlv) ((wlv).vcol - (wlv).vcol_off_co)
assert(startrow < endrow);
// variables passed between functions
winlinevars_T wlv = {
.lnum = lnum,
.foldinfo = foldinfo,
.startrow = startrow,
.row = startrow,
.fromcol = -10,
.tocol = MAXCOL,
.vcol_sbr = -1,
.old_boguscols = 0,
};
buf_T *buf = wp->w_buffer;
const bool end_fill = (lnum == buf->b_ml.ml_line_count + 1);
if (col_rows == 0) {
// To speed up the loop below, set extra_check when there is linebreak,
// trailing white space and/or syntax processing to be done.
extra_check = wp->w_p_lbr;
if (syntax_present(wp) && !wp->w_s->b_syn_error && !wp->w_s->b_syn_slow
&& !has_foldtext && !end_fill) {
// Prepare for syntax highlighting in this line. When there is an
// error, stop syntax highlighting.
int save_did_emsg = did_emsg;
did_emsg = false;
syntax_start(wp, lnum);
if (did_emsg) {
wp->w_s->b_syn_error = true;
} else {
did_emsg = save_did_emsg;
if (!wp->w_s->b_syn_slow) {
has_syntax = true;
extra_check = true;
}
}
}
has_decor = decor_redraw_line(wp, lnum - 1, &decor_state);
if (!end_fill) {
decor_providers_invoke_line(wp, lnum - 1, &has_decor);
}
if (has_decor) {
extra_check = true;
}
// Check for columns to display for 'colorcolumn'.
wlv.color_cols = wp->w_buffer->terminal ? NULL : wp->w_p_cc_cols;
advance_color_col(&wlv, vcol_hlc(wlv));
// handle Visual active in this window
if (VIsual_active && wp->w_buffer == curwin->w_buffer) {
pos_T *top, *bot;
if (ltoreq(curwin->w_cursor, VIsual)) {
// Visual is after curwin->w_cursor
top = &curwin->w_cursor;
bot = &VIsual;
} else {
// Visual is before curwin->w_cursor
top = &VIsual;
bot = &curwin->w_cursor;
}
lnum_in_visual_area = (lnum >= top->lnum && lnum <= bot->lnum);
if (VIsual_mode == Ctrl_V) {
// block mode
if (lnum_in_visual_area) {
wlv.fromcol = wp->w_old_cursor_fcol;
wlv.tocol = wp->w_old_cursor_lcol;
}
} else {
// non-block mode
if (lnum > top->lnum && lnum <= bot->lnum) {
wlv.fromcol = 0;
} else if (lnum == top->lnum) {
if (VIsual_mode == 'V') { // linewise
wlv.fromcol = 0;
} else {
getvvcol(wp, top, (colnr_T *)&wlv.fromcol, NULL, NULL);
if (gchar_pos(top) == NUL) {
wlv.tocol = wlv.fromcol + 1;
}
}
}
if (VIsual_mode != 'V' && lnum == bot->lnum) {
if (*p_sel == 'e' && bot->col == 0
&& bot->coladd == 0) {
wlv.fromcol = -10;
wlv.tocol = MAXCOL;
} else if (bot->col == MAXCOL) {
wlv.tocol = MAXCOL;
} else {
pos_T pos = *bot;
if (*p_sel == 'e') {
getvvcol(wp, &pos, (colnr_T *)&wlv.tocol, NULL, NULL);
} else {
getvvcol(wp, &pos, NULL, NULL, (colnr_T *)&wlv.tocol);
wlv.tocol++;
}
}
}
}
// Check if the char under the cursor should be inverted (highlighted).
if (!highlight_match && lnum == curwin->w_cursor.lnum && wp == curwin
&& cursor_is_block_during_visual(*p_sel == 'e')) {
noinvcur = true;
}
// if inverting in this line set area_highlighting
if (wlv.fromcol >= 0) {
area_highlighting = true;
vi_attr = win_hl_attr(wp, HLF_V);
}
// handle 'incsearch' and ":s///c" highlighting
} else if (highlight_match
&& wp == curwin
&& !has_foldtext
&& lnum >= curwin->w_cursor.lnum
&& lnum <= curwin->w_cursor.lnum + search_match_lines) {
if (lnum == curwin->w_cursor.lnum) {
getvcol(curwin, &(curwin->w_cursor),
(colnr_T *)&wlv.fromcol, NULL, NULL);
} else {
wlv.fromcol = 0;
}
if (lnum == curwin->w_cursor.lnum + search_match_lines) {
pos_T pos = {
.lnum = lnum,
.col = search_match_endcol,
};
getvcol(curwin, &pos, (colnr_T *)&wlv.tocol, NULL, NULL);
}
// do at least one character; happens when past end of line
if (wlv.fromcol == wlv.tocol && search_match_endcol) {
wlv.tocol = wlv.fromcol + 1;
}
area_highlighting = true;
vi_attr = win_hl_attr(wp, HLF_I);
}
}
int bg_attr = win_bg_attr(wp);
int linestatus = 0;
wlv.filler_lines = diff_check_with_linestatus(wp, lnum, &linestatus);
if (wlv.filler_lines < 0 || linestatus < 0) {
if (wlv.filler_lines == -1 || linestatus == -1) {
if (diff_find_change(wp, lnum, &change_start, &change_end)) {
wlv.diff_hlf = HLF_ADD; // added line
} else if (change_start == 0) {
wlv.diff_hlf = HLF_TXD; // changed text
} else {
wlv.diff_hlf = HLF_CHD; // changed line
}
} else {
wlv.diff_hlf = HLF_ADD; // added line
}
if (linestatus == 0) {
wlv.filler_lines = 0;
}
area_highlighting = true;
}
VirtLines virt_lines = KV_INITIAL_VALUE;
wlv.n_virt_lines = decor_virt_lines(wp, lnum - 1, lnum, &virt_lines, true);
wlv.filler_lines += wlv.n_virt_lines;
if (lnum == wp->w_topline) {
wlv.filler_lines = wp->w_topfill;
wlv.n_virt_lines = MIN(wlv.n_virt_lines, wlv.filler_lines);
}
wlv.filler_todo = wlv.filler_lines;
// Cursor line highlighting for 'cursorline' in the current window.
if (wp->w_p_cul && wp->w_p_culopt_flags != CULOPT_NBR && lnum == wp->w_cursorline
// Do not show the cursor line in the text when Visual mode is active,
// because it's not clear what is selected then.
&& !(wp == curwin && VIsual_active)) {
cul_screenline = (is_wrapped && (wp->w_p_culopt_flags & CULOPT_SCRLINE));
if (!cul_screenline) {
apply_cursorline_highlight(wp, &wlv);
} else {
margin_columns_win(wp, &left_curline_col, &right_curline_col);
}
area_highlighting = true;
}
int line_attr = 0;
int sign_cul_attr = 0;
int sign_num_attr = 0;
// TODO(bfredl, vigoux): line_attr should not take priority over decoration!
decor_redraw_signs(wp, buf, wlv.lnum - 1, wlv.sattrs, &line_attr, &sign_cul_attr, &sign_num_attr);
statuscol_T statuscol = { 0 };
if (*wp->w_p_stc != NUL) {
// Draw the 'statuscolumn' if option is set.
statuscol.draw = true;
statuscol.sattrs = wlv.sattrs;
statuscol.foldinfo = foldinfo;
statuscol.width = win_col_off(wp) - (wp == cmdwin_win);
statuscol.use_cul = use_cursor_line_highlight(wp, lnum);
statuscol.sign_cul_id = statuscol.use_cul ? sign_cul_attr : 0;
statuscol.num_attr = sign_num_attr > 0 ? syn_id2attr(sign_num_attr) : 0;
} else {
if (sign_cul_attr > 0) {
sign_cul_attr = syn_id2attr(sign_cul_attr);
}
if (sign_num_attr > 0) {
sign_num_attr = syn_id2attr(sign_num_attr);
}
}
if (line_attr > 0) {
wlv.line_attr = syn_id2attr(line_attr);
}
// Highlight the current line in the quickfix window.
if (bt_quickfix(wp->w_buffer) && qf_current_entry(wp) == lnum) {
wlv.line_attr = win_hl_attr(wp, HLF_QFL);
}
if (wlv.line_attr_lowprio || wlv.line_attr) {
area_highlighting = true;
}
int line_attr_save = wlv.line_attr;
int line_attr_lowprio_save = wlv.line_attr_lowprio;
if (spv->spv_has_spell && col_rows == 0) {
// Prepare for spell checking.
extra_check = true;
// When a word wrapped from the previous line the start of the
// current line is valid.
if (lnum == spv->spv_checked_lnum) {
cur_checked_col = spv->spv_checked_col;
}
// Previous line was not spell checked, check for capital. This happens
// for the first line in an updated region or after a closed fold.
if (spv->spv_capcol_lnum == 0 && check_need_cap(wp, lnum, 0)) {
spv->spv_cap_col = 0;
} else if (lnum != spv->spv_capcol_lnum) {
spv->spv_cap_col = -1;
}
spv->spv_checked_lnum = 0;
// Get the start of the next line, so that words that wrap to the
// next line are found too: "et<line-break>al.".
// Trick: skip a few chars for C/shell/Vim comments
nextline[SPWORDLEN] = NUL;
if (lnum < wp->w_buffer->b_ml.ml_line_count) {
char *line = ml_get_buf(wp->w_buffer, lnum + 1);
spell_cat_line(nextline + SPWORDLEN, line, SPWORDLEN);
}
assert(!end_fill);
char *line = ml_get_buf(wp->w_buffer, lnum);
// If current line is empty, check first word in next line for capital.
char *ptr = skipwhite(line);
if (*ptr == NUL) {
spv->spv_cap_col = 0;
spv->spv_capcol_lnum = lnum + 1;
} else if (spv->spv_cap_col == 0) {
// For checking first word with a capital skip white space.
spv->spv_cap_col = (int)(ptr - line);
}
// Copy the end of the current line into nextline[].
if (nextline[SPWORDLEN] == NUL) {
// No next line or it is empty.
nextlinecol = MAXCOL;
nextline_idx = 0;
} else {
const colnr_T line_len = ml_get_buf_len(wp->w_buffer, lnum);
if (line_len < SPWORDLEN) {
// Short line, use it completely and append the start of the
// next line.
nextlinecol = 0;
memmove(nextline, line, (size_t)line_len);
STRMOVE(nextline + line_len, nextline + SPWORDLEN);
nextline_idx = line_len + 1;
} else {
// Long line, use only the last SPWORDLEN bytes.
nextlinecol = line_len - SPWORDLEN;
memmove(nextline, line + nextlinecol, SPWORDLEN);
nextline_idx = SPWORDLEN + 1;
}
}
}
// current line
char *line = end_fill ? "" : ml_get_buf(wp->w_buffer, lnum);
// current position in "line"
char *ptr = line;
colnr_T trailcol = MAXCOL; // start of trailing spaces
colnr_T leadcol = 0; // start of leading spaces
bool lcs_eol_todo = true; // need to keep track of this even if lcs_eol is NUL
const schar_T lcs_eol = wp->w_p_lcs_chars.eol; // 'eol' value
schar_T lcs_prec_todo = wp->w_p_lcs_chars.prec; // 'prec' until it's been used, then NUL
if (wp->w_p_list && !has_foldtext && !end_fill) {
if (wp->w_p_lcs_chars.space
|| wp->w_p_lcs_chars.multispace != NULL
|| wp->w_p_lcs_chars.leadmultispace != NULL
|| wp->w_p_lcs_chars.trail
|| wp->w_p_lcs_chars.lead
|| wp->w_p_lcs_chars.nbsp) {
extra_check = true;
}
// find start of trailing whitespace
if (wp->w_p_lcs_chars.trail) {
trailcol = ml_get_buf_len(wp->w_buffer, lnum);
while (trailcol > 0 && ascii_iswhite(ptr[trailcol - 1])) {
trailcol--;
}
trailcol += (colnr_T)(ptr - line);
}
// find end of leading whitespace
if (wp->w_p_lcs_chars.lead || wp->w_p_lcs_chars.leadmultispace != NULL) {
leadcol = 0;
while (ascii_iswhite(ptr[leadcol])) {
leadcol++;
}
if (ptr[leadcol] == NUL) {
// in a line full of spaces all of them are treated as trailing
leadcol = 0;
} else {
// keep track of the first column not filled with spaces
leadcol += (colnr_T)(ptr - line + 1);
}
}
}
// 'nowrap' or 'wrap' and a single line that doesn't fit: Advance to the
// first character to be displayed.
const int start_col = wp->w_p_wrap
? (startrow == 0 ? wp->w_skipcol : 0)
: wp->w_leftcol;
if (start_col > 0 && col_rows == 0) {
char *prev_ptr = ptr;
CharSize cs = { 0 };
CharsizeArg csarg;
CSType cstype = init_charsize_arg(&csarg, wp, lnum, line);
csarg.max_head_vcol = start_col;
int vcol = wlv.vcol;
StrCharInfo ci = utf_ptr2StrCharInfo(ptr);
while (vcol < start_col && *ci.ptr != NUL) {
cs = win_charsize(cstype, vcol, ci.ptr, ci.chr.value, &csarg);
vcol += cs.width;
prev_ptr = ci.ptr;
ci = utfc_next(ci);
if (wp->w_p_list) {
in_multispace = *prev_ptr == ' ' && (*ci.ptr == ' '
|| (prev_ptr > line && prev_ptr[-1] == ' '));
if (!in_multispace) {
multispace_pos = 0;
} else if (ci.ptr >= line + leadcol
&& wp->w_p_lcs_chars.multispace != NULL) {
multispace_pos++;
if (wp->w_p_lcs_chars.multispace[multispace_pos] == NUL) {
multispace_pos = 0;
}
} else if (ci.ptr < line + leadcol
&& wp->w_p_lcs_chars.leadmultispace != NULL) {
multispace_pos++;
if (wp->w_p_lcs_chars.leadmultispace[multispace_pos] == NUL) {
multispace_pos = 0;
}
}
}
}
wlv.vcol = vcol;
ptr = ci.ptr;
int charsize = cs.width;
int head = cs.head;
// When:
// - 'cuc' is set, or
// - 'colorcolumn' is set, or
// - 'virtualedit' is set, or
// - the visual mode is active,
// the end of the line may be before the start of the displayed part.
if (wlv.vcol < start_col && (wp->w_p_cuc
|| wlv.color_cols
|| virtual_active(wp)
|| (VIsual_active && wp->w_buffer == curwin->w_buffer))) {
wlv.vcol = start_col;
}
// Handle a character that's not completely on the screen: Put ptr at
// that character but skip the first few screen characters.
if (wlv.vcol > start_col) {
wlv.vcol -= charsize;
ptr = prev_ptr;
}
if (start_col > wlv.vcol) {
wlv.skip_cells = start_col - wlv.vcol - head;
}
// Adjust for when the inverted text is before the screen,
// and when the start of the inverted text is before the screen.
if (wlv.tocol <= wlv.vcol) {
wlv.fromcol = 0;
} else if (wlv.fromcol >= 0 && wlv.fromcol < wlv.vcol) {
wlv.fromcol = wlv.vcol;
}
// When w_skipcol is non-zero, first line needs 'showbreak'
if (wp->w_p_wrap) {
wlv.need_showbreak = true;
}
// When spell checking a word we need to figure out the start of the
// word and if it's badly spelled or not.
if (spv->spv_has_spell) {
colnr_T linecol = (colnr_T)(ptr - line);
hlf_T spell_hlf = HLF_COUNT;
pos_T pos = wp->w_cursor;
wp->w_cursor.lnum = lnum;
wp->w_cursor.col = linecol;
size_t len = spell_move_to(wp, FORWARD, SMT_ALL, true, &spell_hlf);
// spell_move_to() may call ml_get() and make "line" invalid
line = ml_get_buf(wp->w_buffer, lnum);
ptr = line + linecol;
if (len == 0 || wp->w_cursor.col > linecol) {
// no bad word found at line start, don't check until end of a
// word
spell_hlf = HLF_COUNT;
word_end = (int)(spell_to_word_end(ptr, wp) - line + 1);
} else {
// bad word found, use attributes until end of word
assert(len <= INT_MAX);
word_end = wp->w_cursor.col + (int)len + 1;
// Turn index into actual attributes.
if (spell_hlf != HLF_COUNT) {
spell_attr = highlight_attr[spell_hlf];
}
}
wp->w_cursor = pos;
// Need to restart syntax highlighting for this line.
if (has_syntax) {
syntax_start(wp, lnum);
}
}
}
// Correct highlighting for cursor that can't be disabled.
// Avoids having to check this for each character.
if (wlv.fromcol >= 0) {
if (noinvcur) {
if ((colnr_T)wlv.fromcol == wp->w_virtcol) {
// highlighting starts at cursor, let it start just after the
// cursor
fromcol_prev = wlv.fromcol;
wlv.fromcol = -1;
} else if ((colnr_T)wlv.fromcol < wp->w_virtcol) {
// restart highlighting after the cursor
fromcol_prev = wp->w_virtcol;
}
}
if (wlv.fromcol >= wlv.tocol) {
wlv.fromcol = -1;
}
}
if (col_rows == 0 && !has_foldtext && !end_fill) {
const int v = (int)(ptr - line);
area_highlighting |= prepare_search_hl_line(wp, lnum, v,
&line, &screen_search_hl, &search_attr,
&search_attr_from_match);
ptr = line + v; // "line" may have been updated
}
win_line_start(wp, &wlv);
bool draw_cols = true;
int leftcols_width = 0;
// won't highlight after TERM_ATTRS_MAX columns
int term_attrs[TERM_ATTRS_MAX] = { 0 };
if (wp->w_buffer->terminal) {
terminal_get_line_attributes(wp->w_buffer->terminal, wp, lnum, term_attrs);
extra_check = true;
}
const bool may_have_inline_virt
= !has_foldtext && buf_meta_total(wp->w_buffer, kMTMetaInline) > 0;
int virt_line_index;
int virt_line_offset = -1;
// Repeat for the whole displayed line.
while (true) {
int has_match_conc = 0; ///< match wants to conceal
int decor_conceal = 0;
bool did_decrement_ptr = false;
// Skip this quickly when working on the text.
if (draw_cols) {
if (cul_screenline) {
wlv.cul_attr = 0;
wlv.line_attr = line_attr_save;
wlv.line_attr_lowprio = line_attr_lowprio_save;
}
assert(wlv.off == 0);
if (wp == cmdwin_win) {
// Draw the cmdline character.
draw_col_fill(&wlv, schar_from_ascii(cmdwin_type), 1, win_hl_attr(wp, HLF_AT));
}
if (wlv.filler_todo > 0) {
int index = wlv.filler_todo - (wlv.filler_lines - wlv.n_virt_lines);
if (index > 0) {
virt_line_index = (int)kv_size(virt_lines) - index;
assert(virt_line_index >= 0);
virt_line_offset = kv_A(virt_lines, virt_line_index).left_col ? 0 : win_col_off(wp);
}
}
if (virt_line_offset == 0) {
// skip columns
} else if (statuscol.draw) {
// Draw 'statuscolumn' if it is set.
if (sign_num_attr == 0) {
statuscol.num_attr = get_line_number_attr(wp, &wlv);
}
const int v = (int)(ptr - line);
draw_statuscol(wp, &wlv, lnum, wlv.row - startrow - wlv.filler_lines, col_rows, &statuscol);
if (wp->w_redr_statuscol) {
break;
}
if (!end_fill) {
// Get the line again as evaluating 'statuscolumn' may free it.
line = ml_get_buf(wp->w_buffer, lnum);
ptr = line + v;
}
} else {
// draw builtin info columns: fold, sign, number
draw_foldcolumn(wp, &wlv);
// wp->w_scwidth is zero if signcol=number is used
for (int sign_idx = 0; sign_idx < wp->w_scwidth; sign_idx++) {
draw_sign(false, wp, &wlv, sign_idx, sign_cul_attr);
}
draw_lnum_col(wp, &wlv, sign_num_attr, sign_cul_attr);
}
win_col_offset = wlv.off;
// When only updating the columns and that's done, stop here.
if (col_rows > 0) {
wlv_put_linebuf(wp, &wlv, MIN(wlv.off, grid->cols), false, bg_attr, 0);
// Need to update more screen lines if:
// - 'statuscolumn' needs to be drawn, or
// - LineNrAbove or LineNrBelow is used, or
// - still drawing filler lines.
if ((wlv.row + 1 - wlv.startrow < col_rows
&& (statuscol.draw
|| win_hl_attr(wp, HLF_LNA) != win_hl_attr(wp, HLF_N)
|| win_hl_attr(wp, HLF_LNB) != win_hl_attr(wp, HLF_N)))
|| wlv.filler_todo > 0) {
wlv.row++;
if (wlv.row == endrow) {
break;
}
wlv.filler_todo--;
if (wlv.filler_todo == 0 && (wp->w_botfill || end_fill)) {
break;
}
// win_line_start(wp, &wlv);
wlv.col = 0;
wlv.off = 0;
continue;
} else {
break;
}
}
// Check if 'breakindent' applies and show it.
if (!wp->w_briopt_sbr) {
handle_breakindent(wp, &wlv);
}
handle_showbreak_and_filler(wp, &wlv);
if (wp->w_briopt_sbr) {
handle_breakindent(wp, &wlv);
}
wlv.col = wlv.off;
draw_cols = false;
if (wlv.filler_todo <= 0) {
leftcols_width = wlv.off;
}
if (has_decor && wlv.row == startrow + wlv.filler_lines) {
// hide virt_text on text hidden by 'nowrap' or 'smoothscroll'
decor_redraw_col(wp, (colnr_T)(ptr - line) - 1, wlv.off, true, &decor_state);
}
if (wlv.col >= grid->cols) {
wlv.col = wlv.off = grid->cols;
goto end_check;
}
}
if (cul_screenline && wlv.filler_todo <= 0
&& wlv.vcol >= left_curline_col && wlv.vcol < right_curline_col) {
apply_cursorline_highlight(wp, &wlv);
}
// When still displaying '$' of change command, stop at cursor.
if (dollar_vcol >= 0 && wp == curwin
&& lnum == wp->w_cursor.lnum && wlv.vcol >= wp->w_virtcol) {
draw_virt_text(wp, buf, win_col_offset, &wlv.col, wlv.row);
// don't clear anything after wlv.col
wlv_put_linebuf(wp, &wlv, wlv.col, false, bg_attr, 0);
// Pretend we have finished updating the window. Except when
// 'cursorcolumn' is set.
if (wp->w_p_cuc) {
wlv.row = wp->w_cline_row + wp->w_cline_height;
} else {
wlv.row = grid->rows;
}
break;
}
const bool draw_folded = has_fold && wlv.row == startrow + wlv.filler_lines;
if (draw_folded && wlv.n_extra == 0) {
wlv.char_attr = folded_attr = win_hl_attr(wp, HLF_FL);
decor_attr = 0;
}
int extmark_attr = 0;
if (wlv.filler_todo <= 0
&& (area_highlighting || spv->spv_has_spell || extra_check)) {
if (wlv.n_extra == 0 || !wlv.extra_for_extmark) {
wlv.reset_extra_attr = false;
}
if (has_decor && wlv.n_extra == 0) {
// Duplicate the Visual area check after this block,
// but don't check inside p_extra here.
if (wlv.vcol == wlv.fromcol
|| (wlv.vcol + 1 == wlv.fromcol
&& (wlv.n_extra == 0 && utf_ptr2cells(ptr) > 1))
|| (vcol_prev == fromcol_prev
&& vcol_prev < wlv.vcol
&& wlv.vcol < wlv.tocol)) {
area_active = true;
} else if (area_active
&& (wlv.vcol == wlv.tocol
|| (noinvcur && wlv.vcol == wp->w_virtcol))) {
area_active = false;
}
bool selected = (area_active || (area_highlighting && noinvcur
&& wlv.vcol == wp->w_virtcol));
// When there may be inline virtual text, position of non-inline virtual text
// can only be decided after drawing inline virtual text with lower priority.
if (decor_need_recheck) {
if (!may_have_inline_virt) {
decor_recheck_draw_col(wlv.off, selected, &decor_state);
}
decor_need_recheck = false;
}
extmark_attr = decor_redraw_col(wp, (colnr_T)(ptr - line),
may_have_inline_virt ? -3 : wlv.off,
selected, &decor_state);
if (may_have_inline_virt) {
handle_inline_virtual_text(wp, &wlv, ptr - line, selected);
if (wlv.n_extra > 0 && wlv.virt_inline_hl_mode <= kHlModeReplace) {
// restore search_attr and area_attr when n_extra is down to zero
// TODO(bfredl): this is ugly as fuck. look if we can do this some other way.
saved_search_attr = search_attr;
saved_area_attr = area_attr;
saved_decor_attr = decor_attr;
saved_search_attr_from_match = search_attr_from_match;
search_attr = 0;
area_attr = 0;
decor_attr = 0;
search_attr_from_match = false;
}
}
}
int *area_attr_p = wlv.extra_for_extmark && wlv.virt_inline_hl_mode <= kHlModeReplace
? &saved_area_attr : &area_attr;
// handle Visual or match highlighting in this line
if (wlv.vcol == wlv.fromcol
|| (wlv.vcol + 1 == wlv.fromcol
&& ((wlv.n_extra == 0 && utf_ptr2cells(ptr) > 1)
|| (wlv.n_extra > 0 && wlv.p_extra != NULL
&& utf_ptr2cells(wlv.p_extra) > 1)))
|| (vcol_prev == fromcol_prev
&& vcol_prev < wlv.vcol // not at margin
&& wlv.vcol < wlv.tocol)) {
*area_attr_p = vi_attr; // start highlighting
area_active = true;
} else if (*area_attr_p != 0
&& (wlv.vcol == wlv.tocol
|| (noinvcur && wlv.vcol == wp->w_virtcol))) {
*area_attr_p = 0; // stop highlighting
area_active = false;
}
if (!has_foldtext && wlv.n_extra == 0) {
// Check for start/end of 'hlsearch' and other matches.
// After end, check for start/end of next match.
// When another match, have to check for start again.
const int v = (int)(ptr - line);
search_attr = update_search_hl(wp, lnum, v, &line, &screen_search_hl,
&has_match_conc, &match_conc, lcs_eol_todo,
&on_last_col, &search_attr_from_match);
ptr = line + v; // "line" may have been changed
// Do not allow a conceal over EOL otherwise EOL will be missed
// and bad things happen.
if (*ptr == NUL) {
has_match_conc = 0;
}
}
if (wlv.diff_hlf != (hlf_T)0) {
// When there is extra text (eg: virtual text) it gets the
// diff highlighting for the line, but not for changed text.
if (wlv.diff_hlf == HLF_CHD && ptr - line >= change_start
&& wlv.n_extra == 0) {
wlv.diff_hlf = HLF_TXD; // changed text
}
if (wlv.diff_hlf == HLF_TXD && ((ptr - line > change_end && wlv.n_extra == 0)
|| (wlv.n_extra > 0 && wlv.extra_for_extmark))) {
wlv.diff_hlf = HLF_CHD; // changed line
}
wlv.line_attr = win_hl_attr(wp, (int)wlv.diff_hlf);
// Overlay CursorLine onto diff-mode highlight.
if (wlv.cul_attr) {
wlv.line_attr = 0 != wlv.line_attr_lowprio // Low-priority CursorLine
? hl_combine_attr(hl_combine_attr(wlv.cul_attr, wlv.line_attr),
hl_get_underline())
: hl_combine_attr(wlv.line_attr, wlv.cul_attr);
}
}
// Decide which of the highlight attributes to use.
attr_pri = true;
if (area_attr != 0) {
wlv.char_attr = hl_combine_attr(wlv.line_attr, area_attr);
if (!highlight_match) {
// let search highlight show in Visual area if possible
wlv.char_attr = hl_combine_attr(search_attr, wlv.char_attr);
}
} else if (search_attr != 0) {
wlv.char_attr = hl_combine_attr(wlv.line_attr, search_attr);
} else if (wlv.line_attr != 0
&& ((wlv.fromcol == -10 && wlv.tocol == MAXCOL)
|| wlv.vcol < wlv.fromcol
|| vcol_prev < fromcol_prev
|| wlv.vcol >= wlv.tocol)) {
// Use wlv.line_attr when not in the Visual or 'incsearch' area
// (area_attr may be 0 when "noinvcur" is set).
wlv.char_attr = wlv.line_attr;
} else {
attr_pri = false;
wlv.char_attr = decor_attr;
}
if (folded_attr != 0) {
wlv.char_attr = hl_combine_attr(folded_attr, wlv.char_attr);
}
}
if (draw_folded && has_foldtext && wlv.n_extra == 0 && wlv.col == win_col_offset) {
const int v = (int)(ptr - line);
linenr_T lnume = lnum + foldinfo.fi_lines - 1;
memset(buf_fold, ' ', FOLD_TEXT_LEN);
wlv.p_extra = get_foldtext(wp, lnum, lnume, foldinfo, buf_fold, &fold_vt);
wlv.n_extra = (int)strlen(wlv.p_extra);
if (wlv.p_extra != buf_fold) {
foldtext_free = wlv.p_extra;
}
wlv.sc_extra = NUL;
wlv.sc_final = NUL;
wlv.p_extra[wlv.n_extra] = NUL;
// Get the line again as evaluating 'foldtext' may free it.
line = ml_get_buf(wp->w_buffer, lnum);
ptr = line + v;
}
if (draw_folded && wlv.n_extra == 0 && wlv.col < grid->cols && (has_foldtext || *ptr == NUL)) {
// Fill rest of line with 'fold'.
wlv.sc_extra = wp->w_p_fcs_chars.fold;
wlv.sc_final = NUL;
wlv.n_extra = grid->cols - wlv.col;
}
if (draw_folded && wlv.n_extra != 0 && wlv.col >= grid->cols) {
// Truncate the folding.
wlv.n_extra = 0;
}
// Get the next character to put on the screen.
//
// The "p_extra" points to the extra stuff that is inserted to
// represent special characters (non-printable stuff) and other
// things. When all characters are the same, sc_extra is used.
// If sc_final is set, it will compulsorily be used at the end.
// "p_extra" must end in a NUL to avoid utfc_ptr2len() reads past
// "p_extra[n_extra]".
// For the '$' of the 'list' option, n_extra == 1, p_extra == "".
if (wlv.n_extra > 0) {
if (wlv.sc_extra != NUL || (wlv.n_extra == 1 && wlv.sc_final != NUL)) {
mb_schar = (wlv.n_extra == 1 && wlv.sc_final != NUL) ? wlv.sc_final : wlv.sc_extra;
mb_c = schar_get_first_codepoint(mb_schar);
wlv.n_extra--;
} else {
assert(wlv.p_extra != NULL);
mb_l = utfc_ptr2len(wlv.p_extra);
mb_schar = utfc_ptr2schar(wlv.p_extra, &mb_c);
// mb_l=0 at the end-of-line NUL
if (mb_l > wlv.n_extra || mb_l == 0) {
mb_l = 1;
}
// If a double-width char doesn't fit display a '>' in the last column.
// Don't advance the pointer but put the character at the start of the next line.
if (wlv.col >= grid->cols - 1 && utf_char2cells(mb_c) == 2) {
mb_c = '>';
mb_l = 1;
(void)mb_l;
mb_schar = schar_from_ascii(mb_c);
multi_attr = win_hl_attr(wp, HLF_AT);
if (wlv.cul_attr) {
multi_attr = 0 != wlv.line_attr_lowprio
? hl_combine_attr(wlv.cul_attr, multi_attr)
: hl_combine_attr(multi_attr, wlv.cul_attr);
}
} else {
wlv.n_extra -= mb_l;
wlv.p_extra += mb_l;
}
}
// Only restore search_attr and area_attr after "n_extra" in
// the next screen line is also done.
if (wlv.n_extra <= 0) {
if (search_attr == 0) {
search_attr = saved_search_attr;
saved_search_attr = 0;
}
if (area_attr == 0 && *ptr != NUL) {
area_attr = saved_area_attr;
saved_area_attr = 0;
}
if (decor_attr == 0) {
decor_attr = saved_decor_attr;
saved_decor_attr = 0;
}
if (wlv.extra_for_extmark) {
// wlv.extra_attr should be used at this position but not
// any further.
wlv.reset_extra_attr = true;
}
wlv.extra_for_extmark = false;
}
} else if (wlv.filler_todo > 0) {
// Wait with reading text until filler lines are done. Still need to
// initialize these.
mb_c = ' ';
mb_schar = schar_from_ascii(' ');
} else if (has_foldtext || (has_fold && wlv.col >= grid->cols)) {
// skip writing the buffer line itself
mb_schar = NUL;
} else {
const char *prev_ptr = ptr;
// first byte of next char
int c0 = (uint8_t)(*ptr);
if (c0 == NUL) {
// no more cells to skip
wlv.skip_cells = 0;
}
// Get a character from the line itself.
mb_l = utfc_ptr2len(ptr);
mb_schar = utfc_ptr2schar(ptr, &mb_c);
// Overlong encoded ASCII or ASCII with composing char
// is displayed normally, except a NUL.
if (mb_l > 1 && mb_c < 0x80) {
c0 = mb_c;
}
if ((mb_l == 1 && c0 >= 0x80)
|| (mb_l >= 1 && mb_c == 0)
|| (mb_l > 1 && (!vim_isprintc(mb_c)))) {
// Illegal UTF-8 byte: display as <xx>.
// Non-printable character : display as ? or fullwidth ?.
transchar_hex(wlv.extra, mb_c);
if (wp->w_p_rl) { // reverse
rl_mirror_ascii(wlv.extra, NULL);
}
wlv.p_extra = wlv.extra;
mb_c = mb_ptr2char_adv((const char **)&wlv.p_extra);
mb_schar = schar_from_char(mb_c);
wlv.n_extra = (int)strlen(wlv.p_extra);
wlv.sc_extra = NUL;
wlv.sc_final = NUL;
if (area_attr == 0 && search_attr == 0) {
wlv.n_attr = wlv.n_extra + 1;
wlv.extra_attr = win_hl_attr(wp, HLF_8);
saved_attr2 = wlv.char_attr; // save current attr
}
} else if (mb_l == 0) { // at the NUL at end-of-line
mb_l = 1;
}
// If a double-width char doesn't fit display a '>' in the
// last column; the character is displayed at the start of the
// next line.
if (wlv.col >= grid->cols - 1 && utf_char2cells(mb_c) == 2) {
mb_schar = schar_from_ascii('>');
mb_c = '>';
mb_l = 1;
multi_attr = win_hl_attr(wp, HLF_AT);
// Put pointer back so that the character will be
// displayed at the start of the next line.
ptr--;
did_decrement_ptr = true;
} else if (*ptr != NUL) {
ptr += mb_l - 1;
}
// If a double-width char doesn't fit at the left side display a '<' in
// the first column. Don't do this for unprintable characters.
if (wlv.skip_cells > 0 && mb_l > 1 && wlv.n_extra == 0) {
wlv.n_extra = 1;
wlv.sc_extra = schar_from_ascii(MB_FILLER_CHAR);
wlv.sc_final = NUL;
mb_schar = schar_from_ascii(' ');
mb_c = ' ';
mb_l = 1;
if (area_attr == 0 && search_attr == 0) {
wlv.n_attr = wlv.n_extra + 1;
wlv.extra_attr = win_hl_attr(wp, HLF_AT);
saved_attr2 = wlv.char_attr; // save current attr
}
}
ptr++;
decor_attr = 0;
if (extra_check) {
const bool no_plain_buffer = (wp->w_s->b_p_spo_flags & SPO_NPBUFFER) != 0;
bool can_spell = !no_plain_buffer;
// Get extmark and syntax attributes, unless still at the start of the line
// (double-wide char that doesn't fit).
const int v = (int)(ptr - line);
const ptrdiff_t prev_v = prev_ptr - line;
if (has_syntax && v > 0) {
// Get the syntax attribute for the character. If there
// is an error, disable syntax highlighting.
int save_did_emsg = did_emsg;
did_emsg = false;
decor_attr = get_syntax_attr(v - 1, spv->spv_has_spell ? &can_spell : NULL, false);
if (did_emsg) {
wp->w_s->b_syn_error = true;
has_syntax = false;
} else {
did_emsg = save_did_emsg;
}
if (wp->w_s->b_syn_slow) {
has_syntax = false;
}
// Need to get the line again, a multi-line regexp may
// have made it invalid.
line = ml_get_buf(wp->w_buffer, lnum);
ptr = line + v;
prev_ptr = line + prev_v;
// no concealing past the end of the line, it interferes
// with line highlighting.
syntax_flags = (mb_schar == 0) ? 0 : get_syntax_info(&syntax_seqnr);
}
if (has_decor && v > 0) {
// extmarks take preceedence over syntax.c
decor_attr = hl_combine_attr(decor_attr, extmark_attr);
decor_conceal = decor_state.conceal;
can_spell = TRISTATE_TO_BOOL(decor_state.spell, can_spell);
}
if (folded_attr) {
decor_attr = hl_combine_attr(folded_attr, decor_attr);
}
if (decor_attr) {
if (!attr_pri) {
if (wlv.cul_attr) {
wlv.char_attr = 0 != wlv.line_attr_lowprio
? hl_combine_attr(wlv.cul_attr, decor_attr)
: hl_combine_attr(decor_attr, wlv.cul_attr);
} else {
wlv.char_attr = decor_attr;
}
} else {
wlv.char_attr = hl_combine_attr(decor_attr, wlv.char_attr);
}
} else if (!attr_pri) {
wlv.char_attr = 0;
}
// Check spelling (unless at the end of the line).
// Only do this when there is no syntax highlighting, the
// @Spell cluster is not used or the current syntax item
// contains the @Spell cluster.
int v1 = (int)(ptr - line);
if (spv->spv_has_spell && v1 >= word_end && v1 > cur_checked_col) {
spell_attr = 0;
// do not calculate cap_col at the end of the line or when
// only white space is following
if (mb_schar != 0 && (*skipwhite(prev_ptr) != NUL) && can_spell) {
char *p;
hlf_T spell_hlf = HLF_COUNT;
v1 -= mb_l - 1;
// Use nextline[] if possible, it has the start of the
// next line concatenated.
if ((prev_ptr - line) - nextlinecol >= 0) {
p = nextline + ((prev_ptr - line) - nextlinecol);
} else {
p = (char *)prev_ptr;
}
spv->spv_cap_col -= (int)(prev_ptr - line);
size_t tmplen = spell_check(wp, p, &spell_hlf, &spv->spv_cap_col, spv->spv_unchanged);
assert(tmplen <= INT_MAX);
int len = (int)tmplen;
word_end = v1 + len;
// In Insert mode only highlight a word that
// doesn't touch the cursor.
if (spell_hlf != HLF_COUNT
&& (State & MODE_INSERT)
&& wp->w_cursor.lnum == lnum
&& wp->w_cursor.col >=
(colnr_T)(prev_ptr - line)
&& wp->w_cursor.col < (colnr_T)word_end) {
spell_hlf = HLF_COUNT;
spell_redraw_lnum = lnum;
}
if (spell_hlf == HLF_COUNT && p != prev_ptr
&& (p - nextline) + len > nextline_idx) {
// Remember that the good word continues at the
// start of the next line.
spv->spv_checked_lnum = lnum + 1;
spv->spv_checked_col = (int)((p - nextline) + len - nextline_idx);
}
// Turn index into actual attributes.
if (spell_hlf != HLF_COUNT) {
spell_attr = highlight_attr[spell_hlf];
}
if (spv->spv_cap_col > 0) {
if (p != prev_ptr && (p - nextline) + spv->spv_cap_col >= nextline_idx) {
// Remember that the word in the next line
// must start with a capital.
spv->spv_capcol_lnum = lnum + 1;
spv->spv_cap_col = (int)((p - nextline) + spv->spv_cap_col - nextline_idx);
} else {
// Compute the actual column.
spv->spv_cap_col += (int)(prev_ptr - line);
}
}
}
}
if (spell_attr != 0) {
if (!attr_pri) {
wlv.char_attr = hl_combine_attr(wlv.char_attr, spell_attr);
} else {
wlv.char_attr = hl_combine_attr(spell_attr, wlv.char_attr);
}
}
if (wp->w_buffer->terminal) {
wlv.char_attr = hl_combine_attr(term_attrs[wlv.vcol], wlv.char_attr);
}
// we don't want linebreak to apply for lines that start with
// leading spaces, followed by long letters (since it would add
// a break at the beginning of a line and this might be unexpected)
//
// So only allow to linebreak, once we have found chars not in
// 'breakat' in the line.
if (wp->w_p_lbr && !wlv.need_lbr && mb_schar != NUL
&& !vim_isbreak((uint8_t)(*ptr))) {
wlv.need_lbr = true;
}
// Found last space before word: check for line break.
if (wp->w_p_lbr && c0 == mb_c && mb_c < 128 && wlv.need_lbr
&& vim_isbreak(mb_c) && !vim_isbreak((uint8_t)(*ptr))) {
int mb_off = utf_head_off(line, ptr - 1);
char *p = ptr - (mb_off + 1);
CharsizeArg csarg;
// lnum == 0, do not want virtual text to be counted here
CSType cstype = init_charsize_arg(&csarg, wp, 0, line);
wlv.n_extra = win_charsize(cstype, wlv.vcol, p, utf_ptr2CharInfo(p).value,
&csarg).width - 1;
if (on_last_col && mb_c != TAB) {
// Do not continue search/match highlighting over the
// line break, but for TABs the highlighting should
// include the complete width of the character
search_attr = 0;
}
if (mb_c == TAB && wlv.n_extra + wlv.col > grid->cols) {
wlv.n_extra = tabstop_padding(wlv.vcol, wp->w_buffer->b_p_ts,
wp->w_buffer->b_p_vts_array) - 1;
}
wlv.sc_extra = schar_from_ascii(mb_off > 0 ? MB_FILLER_CHAR : ' ');
wlv.sc_final = NUL;
if (mb_c < 128 && ascii_iswhite(mb_c)) {
if (mb_c == TAB) {
// See "Tab alignment" below.
fix_for_boguscols(&wlv);
}
if (!wp->w_p_list) {
mb_c = ' ';
mb_schar = schar_from_ascii(mb_c);
}
}
}
if (wp->w_p_list) {
in_multispace = mb_c == ' ' && (*ptr == ' ' || (prev_ptr > line && prev_ptr[-1] == ' '));
if (!in_multispace) {
multispace_pos = 0;
}
}
// 'list': Change char 160 to 'nbsp' and space to 'space'.
// But not when the character is followed by a composing
// character (use mb_l to check that).
if (wp->w_p_list
&& ((((mb_c == 160 && mb_l == 2) || (mb_c == 0x202f && mb_l == 3))
&& wp->w_p_lcs_chars.nbsp)
|| (mb_c == ' '
&& mb_l == 1
&& (wp->w_p_lcs_chars.space
|| (in_multispace && wp->w_p_lcs_chars.multispace != NULL))
&& ptr - line >= leadcol
&& ptr - line <= trailcol))) {
if (in_multispace && wp->w_p_lcs_chars.multispace != NULL) {
mb_schar = wp->w_p_lcs_chars.multispace[multispace_pos++];
if (wp->w_p_lcs_chars.multispace[multispace_pos] == NUL) {
multispace_pos = 0;
}
} else {
mb_schar = (mb_c == ' ') ? wp->w_p_lcs_chars.space : wp->w_p_lcs_chars.nbsp;
}
wlv.n_attr = 1;
wlv.extra_attr = win_hl_attr(wp, HLF_0);
saved_attr2 = wlv.char_attr; // save current attr
mb_c = schar_get_first_codepoint(mb_schar);
}
if (mb_c == ' ' && mb_l == 1 && ((trailcol != MAXCOL && ptr > line + trailcol)
|| (leadcol != 0 && ptr < line + leadcol))) {
if (leadcol != 0 && in_multispace && ptr < line + leadcol
&& wp->w_p_lcs_chars.leadmultispace != NULL) {
mb_schar = wp->w_p_lcs_chars.leadmultispace[multispace_pos++];
if (wp->w_p_lcs_chars.leadmultispace[multispace_pos] == NUL) {
multispace_pos = 0;
}
} else if (ptr > line + trailcol && wp->w_p_lcs_chars.trail) {
mb_schar = wp->w_p_lcs_chars.trail;
} else if (ptr < line + leadcol && wp->w_p_lcs_chars.lead) {
mb_schar = wp->w_p_lcs_chars.lead;
} else if (leadcol != 0 && wp->w_p_lcs_chars.space) {
mb_schar = wp->w_p_lcs_chars.space;
}
wlv.n_attr = 1;
wlv.extra_attr = win_hl_attr(wp, HLF_0);
saved_attr2 = wlv.char_attr; // save current attr
mb_c = schar_get_first_codepoint(mb_schar);
}
}
// Handling of non-printable characters.
if (!vim_isprintc(mb_c)) {
// when getting a character from the file, we may have to
// turn it into something else on the way to putting it on the screen.
if (mb_c == TAB && (!wp->w_p_list || wp->w_p_lcs_chars.tab1)) {
int tab_len = 0;
colnr_T vcol_adjusted = wlv.vcol; // removed showbreak length
char *const sbr = get_showbreak_value(wp);
// Only adjust the tab_len, when at the first column after the
// showbreak value was drawn.
if (*sbr != NUL && wlv.vcol == wlv.vcol_sbr && wp->w_p_wrap) {
vcol_adjusted = wlv.vcol - mb_charlen(sbr);
}
// tab amount depends on current column
tab_len = tabstop_padding(vcol_adjusted,
wp->w_buffer->b_p_ts,
wp->w_buffer->b_p_vts_array) - 1;
if (!wp->w_p_lbr || !wp->w_p_list) {
wlv.n_extra = tab_len;
} else {
int saved_nextra = wlv.n_extra;
if (wlv.vcol_off_co > 0) {
// there are characters to conceal
tab_len += wlv.vcol_off_co;
}
// boguscols before fix_for_boguscols() from above.
if (wp->w_p_lcs_chars.tab1 && wlv.old_boguscols > 0
&& wlv.n_extra > tab_len) {
tab_len += wlv.n_extra - tab_len;
}
if (tab_len > 0) {
// If wlv.n_extra > 0, it gives the number of chars
// to use for a tab, else we need to calculate the
// width for a tab.
size_t tab2_len = schar_len(wp->w_p_lcs_chars.tab2);
size_t len = (size_t)tab_len * tab2_len;
if (wp->w_p_lcs_chars.tab3) {
len += schar_len(wp->w_p_lcs_chars.tab3) - tab2_len;
}
if (wlv.n_extra > 0) {
len += (size_t)(wlv.n_extra - tab_len);
}
mb_schar = wp->w_p_lcs_chars.tab1;
mb_c = schar_get_first_codepoint(mb_schar);
char *p = get_extra_buf(len + 1);
memset(p, ' ', len);
p[len] = NUL;
wlv.p_extra = p;
for (int i = 0; i < tab_len; i++) {
if (*p == NUL) {
tab_len = i;
break;
}
schar_T lcs = wp->w_p_lcs_chars.tab2;
// if tab3 is given, use it for the last char
if (wp->w_p_lcs_chars.tab3 && i == tab_len - 1) {
lcs = wp->w_p_lcs_chars.tab3;
}
size_t slen = schar_get_adv(&p, lcs);
wlv.n_extra += (int)slen - (saved_nextra > 0 ? 1 : 0);
}
// n_extra will be increased by fix_for_boguscols()
// below, so need to adjust for that here
if (wlv.vcol_off_co > 0) {
wlv.n_extra -= wlv.vcol_off_co;
}
}
}
{
int vc_saved = wlv.vcol_off_co;
// Tab alignment should be identical regardless of
// 'conceallevel' value. So tab compensates of all
// previous concealed characters, and thus resets
// vcol_off_co and boguscols accumulated so far in the
// line. Note that the tab can be longer than
// 'tabstop' when there are concealed characters.
fix_for_boguscols(&wlv);
// Make sure, the highlighting for the tab char will be
// correctly set further below (effectively reverts the
// fix_for_boguscols() call).
if (wlv.n_extra == tab_len + vc_saved && wp->w_p_list
&& wp->w_p_lcs_chars.tab1) {
tab_len += vc_saved;
}
}
if (wp->w_p_list) {
mb_schar = (wlv.n_extra == 0 && wp->w_p_lcs_chars.tab3)
? wp->w_p_lcs_chars.tab3 : wp->w_p_lcs_chars.tab1;
if (wp->w_p_lbr && wlv.p_extra != NULL && *wlv.p_extra != NUL) {
wlv.sc_extra = NUL; // using p_extra from above
} else {
wlv.sc_extra = wp->w_p_lcs_chars.tab2;
}
wlv.sc_final = wp->w_p_lcs_chars.tab3;
wlv.n_attr = tab_len + 1;
wlv.extra_attr = win_hl_attr(wp, HLF_0);
saved_attr2 = wlv.char_attr; // save current attr
} else {
wlv.sc_final = NUL;
wlv.sc_extra = schar_from_ascii(' ');
mb_schar = schar_from_ascii(' ');
}
mb_c = schar_get_first_codepoint(mb_schar);
} else if (mb_schar == NUL
&& (wp->w_p_list
|| ((wlv.fromcol >= 0 || fromcol_prev >= 0)
&& wlv.tocol > wlv.vcol
&& VIsual_mode != Ctrl_V
&& wlv.col < grid->cols
&& !(noinvcur
&& lnum == wp->w_cursor.lnum
&& wlv.vcol == wp->w_virtcol)))
&& lcs_eol_todo && lcs_eol != NUL) {
// Display a '$' after the line or highlight an extra
// character if the line break is included.
// For a diff line the highlighting continues after the "$".
if (wlv.diff_hlf == (hlf_T)0
&& wlv.line_attr == 0
&& wlv.line_attr_lowprio == 0) {
// In virtualedit, visual selections may extend beyond end of line
if (!(area_highlighting && virtual_active(wp)
&& wlv.tocol != MAXCOL && wlv.vcol < wlv.tocol)) {
wlv.p_extra = "";
}
wlv.n_extra = 0;
}
if (wp->w_p_list && wp->w_p_lcs_chars.eol > 0) {
mb_schar = wp->w_p_lcs_chars.eol;
} else {
mb_schar = schar_from_ascii(' ');
}
lcs_eol_todo = false;
ptr--; // put it back at the NUL
wlv.extra_attr = win_hl_attr(wp, HLF_AT);
wlv.n_attr = 1;
mb_c = schar_get_first_codepoint(mb_schar);
} else if (mb_schar != NUL) {
wlv.p_extra = transchar_buf(wp->w_buffer, mb_c);
if (wlv.n_extra == 0) {
wlv.n_extra = byte2cells(mb_c) - 1;
}
if ((dy_flags & DY_UHEX) && wp->w_p_rl) {
rl_mirror_ascii(wlv.p_extra, NULL); // reverse "<12>"
}
wlv.sc_extra = NUL;
wlv.sc_final = NUL;
if (wp->w_p_lbr) {
mb_c = (uint8_t)(*wlv.p_extra);
char *p = get_extra_buf((size_t)wlv.n_extra + 1);
memset(p, ' ', (size_t)wlv.n_extra);
memcpy(p, wlv.p_extra + 1, strlen(wlv.p_extra) - 1);
p[wlv.n_extra] = NUL;
wlv.p_extra = p;
} else {
wlv.n_extra = byte2cells(mb_c) - 1;
mb_c = (uint8_t)(*wlv.p_extra++);
}
wlv.n_attr = wlv.n_extra + 1;
wlv.extra_attr = win_hl_attr(wp, HLF_8);
saved_attr2 = wlv.char_attr; // save current attr
mb_schar = schar_from_ascii(mb_c);
} else if (VIsual_active
&& (VIsual_mode == Ctrl_V || VIsual_mode == 'v')
&& virtual_active(wp)
&& wlv.tocol != MAXCOL
&& wlv.vcol < wlv.tocol
&& wlv.col < grid->cols) {
mb_c = ' ';
mb_schar = schar_from_char(mb_c);
ptr--; // put it back at the NUL
}
}
if (wp->w_p_cole > 0
&& (wp != curwin || lnum != wp->w_cursor.lnum || conceal_cursor_line(wp))
&& ((syntax_flags & HL_CONCEAL) != 0 || has_match_conc > 0 || decor_conceal > 0)
&& !(lnum_in_visual_area && vim_strchr(wp->w_p_cocu, 'v') == NULL)) {
wlv.char_attr = conceal_attr;
if (((prev_syntax_id != syntax_seqnr && (syntax_flags & HL_CONCEAL) != 0)
|| has_match_conc > 1 || decor_conceal > 1)
&& (syn_get_sub_char() != NUL
|| (has_match_conc && match_conc)
|| (decor_conceal && decor_state.conceal_char)
|| wp->w_p_cole == 1)
&& wp->w_p_cole != 3) {
// First time at this concealed item: display one
// character.
if (has_match_conc && match_conc) {
mb_schar = schar_from_char(match_conc);
} else if (decor_conceal && decor_state.conceal_char) {
mb_schar = decor_state.conceal_char;
if (decor_state.conceal_attr) {
wlv.char_attr = decor_state.conceal_attr;
}
} else if (syn_get_sub_char() != NUL) {
mb_schar = schar_from_char(syn_get_sub_char());
} else if (wp->w_p_lcs_chars.conceal != NUL) {
mb_schar = wp->w_p_lcs_chars.conceal;
} else {
mb_schar = schar_from_ascii(' ');
}
if (utf_char2cells(mb_c) > 1) {
// When the first char to be concealed is double-width,
// need to advance one more virtual column.
wlv.n_extra++;
}
mb_c = schar_get_first_codepoint(mb_schar);
prev_syntax_id = syntax_seqnr;
if (wlv.n_extra > 0) {
wlv.vcol_off_co += wlv.n_extra;
}
wlv.vcol += wlv.n_extra;
if (is_wrapped && wlv.n_extra > 0) {
wlv.boguscols += wlv.n_extra;
wlv.col += wlv.n_extra;
}
wlv.n_extra = 0;
wlv.n_attr = 0;
} else if (wlv.skip_cells == 0) {
is_concealing = true;
wlv.skip_cells = 1;
}
} else {
prev_syntax_id = 0;
is_concealing = false;
}
if (wlv.skip_cells > 0 && did_decrement_ptr) {
// not showing the '>', put pointer back to avoid getting stuck
ptr++;
}
} // end of printing from buffer content
// In the cursor line and we may be concealing characters: correct
// the cursor column when we reach its position.
// With 'virtualedit' we may never reach cursor position, but we still
// need to correct the cursor column, so do that at end of line.
if (!did_wcol && wlv.filler_todo <= 0
&& wp == curwin && lnum == wp->w_cursor.lnum
&& conceal_cursor_line(wp)
&& (wlv.vcol + wlv.skip_cells >= wp->w_virtcol || mb_schar == NUL)) {
wp->w_wcol = wlv.col - wlv.boguscols;
if (wlv.vcol + wlv.skip_cells < wp->w_virtcol) {
// Cursor beyond end of the line with 'virtualedit'.
wp->w_wcol += wp->w_virtcol - wlv.vcol - wlv.skip_cells;
}
wp->w_wrow = wlv.row;
did_wcol = true;
wp->w_valid |= VALID_WCOL|VALID_WROW|VALID_VIRTCOL;
}
// Don't override visual selection highlighting.
if (wlv.n_attr > 0 && !search_attr_from_match) {
wlv.char_attr = hl_combine_attr(wlv.char_attr, wlv.extra_attr);
if (wlv.reset_extra_attr) {
wlv.reset_extra_attr = false;
wlv.extra_attr = 0;
// search_attr_from_match can be restored now that the extra_attr has been applied
search_attr_from_match = saved_search_attr_from_match;
}
}
// Handle the case where we are in column 0 but not on the first
// character of the line and the user wants us to show us a
// special character (via 'listchars' option "precedes:<char>".
if (lcs_prec_todo != NUL
&& wp->w_p_list
&& (wp->w_p_wrap ? (wp->w_skipcol > 0 && wlv.row == 0) : wp->w_leftcol > 0)
&& wlv.filler_todo <= 0
&& mb_schar != NUL) {
mb_schar = wp->w_p_lcs_chars.prec;
lcs_prec_todo = NUL;
if (utf_char2cells(mb_c) > 1) {
// Double-width character being overwritten by the "precedes"
// character, need to fill up half the character.
wlv.sc_extra = schar_from_ascii(MB_FILLER_CHAR);
wlv.sc_final = NUL;
wlv.n_extra = 1;
wlv.n_attr = 2;
wlv.extra_attr = win_hl_attr(wp, HLF_AT);
}
mb_c = schar_get_first_codepoint(mb_schar);
saved_attr3 = wlv.char_attr; // save current attr
wlv.char_attr = win_hl_attr(wp, HLF_AT); // overwriting char_attr
n_attr3 = 1;
}
// At end of the text line or just after the last character.
if (mb_schar == NUL && eol_hl_off == 0) {
// flag to indicate whether prevcol equals startcol of search_hl or
// one of the matches
const bool prevcol_hl_flag = get_prevcol_hl_flag(wp, &screen_search_hl,
(colnr_T)(ptr - line) - 1);
// Invert at least one char, used for Visual and empty line or
// highlight match at end of line. If it's beyond the last
// char on the screen, just overwrite that one (tricky!) Not
// needed when a '$' was displayed for 'list'.
if (lcs_eol_todo
&& ((area_attr != 0 && wlv.vcol == wlv.fromcol
&& (VIsual_mode != Ctrl_V
|| lnum == VIsual.lnum
|| lnum == curwin->w_cursor.lnum))
// highlight 'hlsearch' match at end of line
|| prevcol_hl_flag)) {
int n = 0;
if (wlv.col >= grid->cols) {
n = -1;
}
if (n != 0) {
// At the window boundary, highlight the last character
// instead (better than nothing).
wlv.off += n;
wlv.col += n;
} else {
// Add a blank character to highlight.
linebuf_char[wlv.off] = schar_from_ascii(' ');
}
if (area_attr == 0 && !has_foldtext) {
// Use attributes from match with highest priority among
// 'search_hl' and the match list.
get_search_match_hl(wp,
&screen_search_hl,
(colnr_T)(ptr - line),
&wlv.char_attr);
}
const int eol_attr = wlv.cul_attr
? hl_combine_attr(wlv.cul_attr, wlv.char_attr)
: wlv.char_attr;
linebuf_attr[wlv.off] = eol_attr;
linebuf_vcol[wlv.off] = wlv.vcol;
wlv.col++;
wlv.off++;
wlv.vcol++;
eol_hl_off = 1;
}
}
// At end of the text line.
if (mb_schar == NUL) {
// Highlight 'cursorcolumn' & 'colorcolumn' past end of the line.
// check if line ends before left margin
wlv.vcol = MAX(wlv.vcol, start_col + wlv.col - win_col_off(wp));
// Get rid of the boguscols now, we want to draw until the right
// edge for 'cursorcolumn'.
wlv.col -= wlv.boguscols;
wlv.boguscols = 0;
advance_color_col(&wlv, vcol_hlc(wlv));
// Make sure alignment is the same regardless
// if listchars=eol:X is used or not.
const int eol_skip = (lcs_eol_todo && eol_hl_off == 0 ? 1 : 0);
if (has_decor) {
decor_redraw_eol(wp, &decor_state, &wlv.line_attr, wlv.col + eol_skip);
}
for (int i = wlv.col; i < grid->cols; i++) {
linebuf_vcol[wlv.off + (i - wlv.col)] = wlv.vcol + (i - wlv.col);
}
if (((wp->w_p_cuc
&& wp->w_virtcol >= vcol_hlc(wlv) - eol_hl_off
&& wp->w_virtcol < grid->cols * (ptrdiff_t)(wlv.row - startrow + 1) + start_col
&& lnum != wp->w_cursor.lnum)
|| wlv.color_cols || wlv.line_attr_lowprio || wlv.line_attr
|| wlv.diff_hlf != 0 || wp->w_buffer->terminal)) {
int rightmost_vcol = get_rightmost_vcol(wp, wlv.color_cols);
const int cuc_attr = win_hl_attr(wp, HLF_CUC);
const int mc_attr = win_hl_attr(wp, HLF_MC);
if (wlv.diff_hlf == HLF_TXD) {
wlv.diff_hlf = HLF_CHD;
}
const int diff_attr = wlv.diff_hlf != 0
? win_hl_attr(wp, (int)wlv.diff_hlf)
: 0;
const int base_attr = hl_combine_attr(wlv.line_attr_lowprio, diff_attr);
if (base_attr || wlv.line_attr || wp->w_buffer->terminal) {
rightmost_vcol = INT_MAX;
}
while (wlv.col < grid->cols) {
linebuf_char[wlv.off] = schar_from_ascii(' ');
advance_color_col(&wlv, vcol_hlc(wlv));
int col_attr = base_attr;
if (wp->w_p_cuc && vcol_hlc(wlv) == wp->w_virtcol
&& lnum != wp->w_cursor.lnum) {
col_attr = hl_combine_attr(col_attr, cuc_attr);
} else if (wlv.color_cols && vcol_hlc(wlv) == *wlv.color_cols) {
col_attr = hl_combine_attr(col_attr, mc_attr);
}
if (wp->w_buffer->terminal && wlv.vcol < TERM_ATTRS_MAX) {
col_attr = hl_combine_attr(col_attr, term_attrs[wlv.vcol]);
}
col_attr = hl_combine_attr(col_attr, wlv.line_attr);
linebuf_attr[wlv.off] = col_attr;
// linebuf_vcol[] already filled by the for loop above
wlv.off++;
wlv.col++;
wlv.vcol++;
if (vcol_hlc(wlv) > rightmost_vcol) {
break;
}
}
}
if (kv_size(fold_vt) > 0) {
draw_virt_text_item(buf, win_col_offset, fold_vt, kHlModeCombine, grid->cols, 0);
}
draw_virt_text(wp, buf, win_col_offset, &wlv.col, wlv.row);
// Set increasing virtual columns in grid->vcols[] to set correct curswant
// (or "coladd" for 'virtualedit') when clicking after end of line.
wlv_put_linebuf(wp, &wlv, wlv.col, true, bg_attr, SLF_INC_VCOL);
wlv.row++;
// Update w_cline_height and w_cline_folded if the cursor line was
// updated (saves a call to plines_win() later).
if (wp == curwin && lnum == curwin->w_cursor.lnum) {
curwin->w_cline_row = startrow;
curwin->w_cline_height = wlv.row - startrow;
curwin->w_cline_folded = has_fold;
curwin->w_valid |= (VALID_CHEIGHT|VALID_CROW);
conceal_cursor_used = conceal_cursor_line(curwin);
}
break;
}
// Show "extends" character from 'listchars' if beyond the line end and
// 'list' is set.
// Don't show this with 'wrap' as the line can't be scrolled horizontally.
if (wp->w_p_lcs_chars.ext != NUL
&& wp->w_p_list
&& !wp->w_p_wrap
&& wlv.filler_todo <= 0
&& wlv.col == grid->cols - 1
&& !has_foldtext) {
if (has_decor && *ptr == NUL && lcs_eol == 0 && lcs_eol_todo) {
// Tricky: there might be a virtual text just _after_ the last char
decor_redraw_col(wp, (colnr_T)(ptr - line), -1, false, &decor_state);
}
if (*ptr != NUL
|| (lcs_eol > 0 && lcs_eol_todo)
|| (wlv.n_extra > 0 && (wlv.sc_extra != NUL || *wlv.p_extra != NUL))
|| (may_have_inline_virt && has_more_inline_virt(&wlv, ptr - line))) {
mb_schar = wp->w_p_lcs_chars.ext;
wlv.char_attr = win_hl_attr(wp, HLF_AT);
mb_c = schar_get_first_codepoint(mb_schar);
}
}
advance_color_col(&wlv, vcol_hlc(wlv));
// Highlight the cursor column if 'cursorcolumn' is set. But don't
// highlight the cursor position itself.
// Also highlight the 'colorcolumn' if it is different than
// 'cursorcolumn'
vcol_save_attr = -1;
if (!lnum_in_visual_area
&& search_attr == 0
&& area_attr == 0
&& wlv.filler_todo <= 0) {
if (wp->w_p_cuc && vcol_hlc(wlv) == wp->w_virtcol
&& lnum != wp->w_cursor.lnum) {
vcol_save_attr = wlv.char_attr;
wlv.char_attr = hl_combine_attr(win_hl_attr(wp, HLF_CUC), wlv.char_attr);
} else if (wlv.color_cols && vcol_hlc(wlv) == *wlv.color_cols) {
vcol_save_attr = wlv.char_attr;
wlv.char_attr = hl_combine_attr(win_hl_attr(wp, HLF_MC), wlv.char_attr);
}
}
if (wlv.filler_todo <= 0) {
// Apply lowest-priority line attr now, so everything can override it.
wlv.char_attr = hl_combine_attr(wlv.line_attr_lowprio, wlv.char_attr);
}
if (wlv.filler_todo <= 0) {
vcol_prev = wlv.vcol;
}
// Store character to be displayed.
// Skip characters that are left of the screen for 'nowrap'.
if (wlv.filler_todo > 0) {
// TODO(bfredl): the main render loop should get called also with the virtual
// lines chunks, so we get line wrapping and other Nice Things.
} else if (wlv.skip_cells <= 0) {
// Store the character.
linebuf_char[wlv.off] = mb_schar;
if (multi_attr) {
linebuf_attr[wlv.off] = multi_attr;
multi_attr = 0;
} else {
linebuf_attr[wlv.off] = wlv.char_attr;
}
linebuf_vcol[wlv.off] = wlv.vcol;
if (utf_char2cells(mb_c) > 1) {
// Need to fill two screen columns.
wlv.off++;
wlv.col++;
// UTF-8: Put a 0 in the second screen char.
linebuf_char[wlv.off] = 0;
linebuf_attr[wlv.off] = linebuf_attr[wlv.off - 1];
linebuf_vcol[wlv.off] = ++wlv.vcol;
// When "wlv.tocol" is halfway through a character, set it to the end
// of the character, otherwise highlighting won't stop.
if (wlv.tocol == wlv.vcol) {
wlv.tocol++;
}
}
wlv.off++;
wlv.col++;
} else if (wp->w_p_cole > 0 && is_concealing) {
bool concealed_wide = utf_char2cells(mb_c) > 1;
wlv.skip_cells--;
wlv.vcol_off_co++;
if (concealed_wide) {
// When a double-width char is concealed,
// need to advance one more virtual column.
wlv.vcol++;
wlv.vcol_off_co++;
}
if (wlv.n_extra > 0) {
wlv.vcol_off_co += wlv.n_extra;
}
if (is_wrapped) {
// Special voodoo required if 'wrap' is on.
//
// Advance the column indicator to force the line
// drawing to wrap early. This will make the line
// take up the same screen space when parts are concealed,
// so that cursor line computations aren't messed up.
//
// To avoid the fictitious advance of 'wlv.col' causing
// trailing junk to be written out of the screen line
// we are building, 'boguscols' keeps track of the number
// of bad columns we have advanced.
if (wlv.n_extra > 0) {
wlv.vcol += wlv.n_extra;
wlv.col += wlv.n_extra;
wlv.boguscols += wlv.n_extra;
wlv.n_extra = 0;
wlv.n_attr = 0;
}
if (concealed_wide) {
// Need to fill two screen columns.
wlv.boguscols++;
wlv.col++;
}
wlv.boguscols++;
wlv.col++;
} else {
if (wlv.n_extra > 0) {
wlv.vcol += wlv.n_extra;
wlv.n_extra = 0;
wlv.n_attr = 0;
}
}
} else {
wlv.skip_cells--;
}
// The skipped cells need to be accounted for in vcol.
if (wlv.skipped_cells > 0) {
wlv.vcol += wlv.skipped_cells;
wlv.skipped_cells = 0;
}
// Only advance the "wlv.vcol" when after the 'number' or
// 'relativenumber' column.
if (wlv.filler_todo <= 0) {
wlv.vcol++;
}
if (vcol_save_attr >= 0) {
wlv.char_attr = vcol_save_attr;
}
// restore attributes after "precedes" in 'listchars'
if (n_attr3 > 0 && --n_attr3 == 0) {
wlv.char_attr = saved_attr3;
}
// restore attributes after last 'listchars' or 'number' char
if (wlv.n_attr > 0 && --wlv.n_attr == 0) {
wlv.char_attr = saved_attr2;
}
if (has_decor && wlv.filler_todo <= 0 && wlv.col >= grid->cols) {
// At the end of screen line: might need to peek for decorations just after
// this position.
if (is_wrapped && wlv.n_extra == 0) {
decor_redraw_col(wp, (colnr_T)(ptr - line), -3, false, &decor_state);
// Check position/hiding of virtual text again on next screen line.
decor_need_recheck = true;
} else if (!is_wrapped) {
// Without wrapping, we might need to display right_align and win_col
// virt_text for the entire text line.
decor_recheck_draw_col(-1, true, &decor_state);
decor_redraw_col(wp, MAXCOL, -1, true, &decor_state);
}
}
end_check:
// At end of screen line and there is more to come: Display the line
// so far. If there is no more to display it is caught above.
if (wlv.col >= grid->cols && (!has_foldtext || virt_line_offset >= 0)
&& (wlv.col <= leftcols_width
|| *ptr != NUL
|| wlv.filler_todo > 0
|| (wp->w_p_list && wp->w_p_lcs_chars.eol != NUL && lcs_eol_todo)
|| (wlv.n_extra != 0 && (wlv.sc_extra != NUL || *wlv.p_extra != NUL))
|| (may_have_inline_virt && has_more_inline_virt(&wlv, ptr - line)))) {
const bool wrap = is_wrapped // Wrapping enabled (not a folded line).
&& wlv.filler_todo <= 0 // Not drawing diff filler lines.
&& lcs_eol_todo // Haven't printed the lcs_eol character.
&& wlv.row != endrow - 1 // Not the last line being displayed.
&& (grid->cols == Columns // Window spans the width of the screen,
|| ui_has(kUIMultigrid)) // or has dedicated grid.
&& !wp->w_p_rl; // Not right-to-left.
int draw_col = wlv.col - wlv.boguscols;
for (int i = draw_col; i < grid->cols; i++) {
linebuf_vcol[wlv.off + (i - draw_col)] = wlv.vcol - 1;
}
// Apply 'cursorline' highlight.
if (wlv.boguscols != 0 && (wlv.line_attr_lowprio != 0 || wlv.line_attr != 0)) {
int attr = hl_combine_attr(wlv.line_attr_lowprio, wlv.line_attr);
while (draw_col < grid->cols) {
linebuf_char[wlv.off] = schar_from_char(' ');
linebuf_attr[wlv.off] = attr;
// linebuf_vcol[] already filled by the for loop above
wlv.off++;
draw_col++;
}
}
if (virt_line_offset >= 0) {
draw_virt_text_item(buf, virt_line_offset, kv_A(virt_lines, virt_line_index).line,
kHlModeReplace, grid->cols, 0);
} else if (wlv.filler_todo <= 0) {
draw_virt_text(wp, buf, win_col_offset, &draw_col, wlv.row);
}
wlv_put_linebuf(wp, &wlv, draw_col, true, bg_attr, wrap ? SLF_WRAP : 0);
if (wrap) {
ScreenGrid *current_grid = grid;
int current_row = wlv.row;
int dummy_col = 0; // unused
grid_adjust(¤t_grid, ¤t_row, &dummy_col);
// Force a redraw of the first column of the next line.
current_grid->attrs[current_grid->line_offset[current_row + 1]] = -1;
}
wlv.boguscols = 0;
wlv.vcol_off_co = 0;
wlv.row++;
// When not wrapping and finished diff lines, break here.
if (!is_wrapped && wlv.filler_todo <= 0) {
break;
}
// When the window is too narrow draw all "@" lines.
if (wlv.col <= leftcols_width) {
win_draw_end(wp, schar_from_ascii('@'), true, wlv.row, wp->w_grid.rows, HLF_AT);
set_empty_rows(wp, wlv.row);
wlv.row = endrow;
}
// When line got too long for screen break here.
if (wlv.row == endrow) {
wlv.row++;
break;
}
win_line_start(wp, &wlv);
draw_cols = true;
lcs_prec_todo = wp->w_p_lcs_chars.prec;
if (wlv.filler_todo <= 0) {
wlv.need_showbreak = true;
}
if (statuscol.draw && vim_strchr(p_cpo, CPO_NUMCOL)
&& wlv.row > startrow + wlv.filler_lines) {
statuscol.draw = false; // don't draw status column if "n" is in 'cpo'
}
wlv.filler_todo--;
virt_line_offset = -1;
// When the filler lines are actually below the last line of the
// file, don't draw the line itself, break here.
if (wlv.filler_todo == 0 && (wp->w_botfill || end_fill)) {
break;
}
}
} // for every character in the line
clear_virttext(&fold_vt);
kv_destroy(virt_lines);
xfree(foldtext_free);
return wlv.row;
}
/// Call grid_put_linebuf() using values from "wlv".
/// Also takes care of putting "<<<" on the first line for 'smoothscroll'
/// when 'showbreak' is not set.
///
/// @param clear_end clear until the end of the screen line.
/// @param flags for grid_put_linebuf(), but shouldn't contain SLF_RIGHTLEFT.
static void wlv_put_linebuf(win_T *wp, const winlinevars_T *wlv, int endcol, bool clear_end,
int bg_attr, int flags)
{
ScreenGrid *grid = &wp->w_grid;
int startcol = 0;
int clear_width = clear_end ? grid->cols : endcol;
assert(!(flags & SLF_RIGHTLEFT));
if (wp->w_p_rl) {
linebuf_mirror(&startcol, &endcol, &clear_width, grid->cols);
flags |= SLF_RIGHTLEFT;
}
// Take care of putting "<<<" on the first line for 'smoothscroll'.
if (wlv->row == 0 && wp->w_skipcol > 0
// do not overwrite the 'showbreak' text with "<<<"
&& *get_showbreak_value(wp) == NUL
// do not overwrite the 'listchars' "precedes" text with "<<<"
&& !(wp->w_p_list && wp->w_p_lcs_chars.prec != 0)) {
int off = 0;
if (wp->w_p_nu && wp->w_p_rnu) {
// do not overwrite the line number, change "123 text" to "123<<<xt".
while (off < grid->cols && ascii_isdigit(schar_get_ascii(linebuf_char[off]))) {
off++;
}
}
for (int i = 0; i < 3 && off < grid->cols; i++) {
if (off + 1 < grid->cols && linebuf_char[off + 1] == NUL) {
// When the first half of a double-width character is
// overwritten, change the second half to a space.
linebuf_char[off + 1] = schar_from_ascii(' ');
}
linebuf_char[off] = schar_from_ascii('<');
linebuf_attr[off] = HL_ATTR(HLF_AT);
off++;
}
}
int row = wlv->row;
int coloff = 0;
grid_adjust(&grid, &row, &coloff);
grid_put_linebuf(grid, row, coloff, startcol, endcol, clear_width, bg_attr, wlv->vcol - 1, flags);
}