static bool ui_window_draw_sidebar(UiCursesWin *win) {
if (!win->winside)
return true;
const Line *line = view_lines_get(win->view);
int sidebar_width = snprintf(NULL, 0, "%zd", line->lineno + win->height - 2) + 1;
if (win->sidebar_width != sidebar_width) {
win->sidebar_width = sidebar_width;
ui_window_resize(win, win->width, win->height);
ui_window_move(win, win->x, win->y);
return false;
} else {
int i = 0;
size_t prev_lineno = 0;
const Line *cursor_line = view_line_get(win->view);
size_t cursor_lineno = cursor_line->lineno;
werase(win->winside);
wbkgd(win->winside, style_to_attr(&win->styles[UI_STYLE_DEFAULT]));
wattrset(win->winside, style_to_attr(&win->styles[UI_STYLE_LINENUMBER]));
for (const Line *l = line; l; l = l->next, i++) {
if (l->lineno && l->lineno != prev_lineno) {
if (win->options & UI_OPTION_LINE_NUMBERS_ABSOLUTE) {
mvwprintw(win->winside, i, 0, "%*u", sidebar_width-1, l->lineno);
} else if (win->options & UI_OPTION_LINE_NUMBERS_RELATIVE) {
size_t rel = (win->options & UI_OPTION_LARGE_FILE) ? 0 : l->lineno;
if (l->lineno > cursor_lineno)
rel = l->lineno - cursor_lineno;
else if (l->lineno < cursor_lineno)
rel = cursor_lineno - l->lineno;
mvwprintw(win->winside, i, 0, "%*u", sidebar_width-1, rel);
}
}
prev_lineno = l->lineno;
}
mvwvline(win->winside, 0, sidebar_width-1, ACS_VLINE, win->height-1);
return true;
}
}
static void ui_window_draw(UiWin *w) {
UiCursesWin *win = (UiCursesWin*)w;
if (!ui_window_draw_sidebar(win))
return;
wbkgd(win->win, style_to_attr(&win->styles[UI_STYLE_DEFAULT]));
wmove(win->win, 0, 0);
int width = view_width_get(win->view);
CellStyle *prev_style = NULL;
size_t cursor_lineno = -1;
if (win->options & UI_OPTION_CURSOR_LINE && win->ui->selwin == win) {
Cursor *cursor = view_cursors(win->view);
Filerange selection = view_cursors_selection_get(cursor);
if (!view_cursors_next(cursor) && !text_range_valid(&selection))
cursor_lineno = view_cursor_getpos(win->view).line;
}
short selection_bg = win->styles[UI_STYLE_SELECTION].bg;
short cursor_line_bg = win->styles[UI_STYLE_CURSOR_LINE].bg;
bool multiple_cursors = view_cursors_multiple(win->view);
attr_t attr = A_NORMAL;
for (const Line *l = view_lines_get(win->view); l; l = l->next) {
bool cursor_line = l->lineno == cursor_lineno;
for (int x = 0; x < width; x++) {
enum UiStyles style_id = l->cells[x].style;
if (style_id == 0)
style_id = UI_STYLE_DEFAULT;
CellStyle *style = &win->styles[style_id];
if (l->cells[x].cursor && win->ui->selwin == win) {
if (multiple_cursors && l->cells[x].cursor_primary)
attr = style_to_attr(&win->styles[UI_STYLE_CURSOR_PRIMARY]);
else
attr = style_to_attr(&win->styles[UI_STYLE_CURSOR]);
prev_style = NULL;
} else if (l->cells[x].selected) {
if (style->fg == selection_bg)
attr |= A_REVERSE;
else
attr = style->attr | COLOR_PAIR(color_pair_get(style->fg, selection_bg));
prev_style = NULL;
} else if (cursor_line) {
attr = style->attr | COLOR_PAIR(color_pair_get(style->fg, cursor_line_bg));
prev_style = NULL;
} else if (style != prev_style) {
attr = style_to_attr(style);
prev_style = style;
}
wattrset(win->win, attr);
waddstr(win->win, l->cells[x].data);
}
/* try to fixup display issues, in theory we should always output a full line */
int x, y;
getyx(win->win, y, x);
(void)y;
wattrset(win->win, A_NORMAL);
for (; 0 < x && x < width; x++)
waddstr(win->win, " ");
}
wclrtobot(win->win);
if (win->winstatus)
ui_window_draw_status(w);
}
