/* Draws possibly centered formatted message with specified title and control
* message on error_win. */
static void
draw_msg(const char title[], const char msg[], const char ctrl_msg[],
int centered, int recommended_width)
{
enum { margin = 1 };
int sw, sh;
int w, h;
int len;
size_t ctrl_msg_n;
size_t wctrl_msg;
size_t i;
curs_set(FALSE);
getmaxyx(stdscr, sh, sw);
ctrl_msg_n = MAX(measure_sub_lines(ctrl_msg, &wctrl_msg), 1U);
h = sh - 2 - ctrl_msg_n + !cfg.display_statusline;
/* The outermost condition is for VLA below (to calm static analyzers). */
w = MAX(2 + 2*margin, MIN(sw - 2,
MAX(MAX(recommended_width, sw/3),
(int)MAX(wctrl_msg, determine_width(msg)) + 4)));
wresize(error_win, h, w);
werase(error_win);
len = strlen(msg);
if(len <= w - 2 && strchr(msg, '\n') == NULL)
{
h = 5 + ctrl_msg_n;
wresize(error_win, h, w);
mvwin(error_win, (sh - h)/2, (sw - w)/2);
checked_wmove(error_win, 2, (w - len)/2);
wprint(error_win, msg);
}
else
{
int i;
int cy = 2;
i = 0;
while(i < len)
{
int j;
char buf[w - 2 - 2*margin + 1];
int cx;
copy_str(buf, sizeof(buf), msg + i);
for(j = 0; buf[j] != '\0'; j++)
if(buf[j] == '\n')
break;
if(buf[j] != '\0')
i++;
buf[j] = '\0';
i += j;
if(buf[0] == '\0')
continue;
h = cy + 4;
wresize(error_win, h, w);
mvwin(error_win, (sh - h)/2, (sw - w)/2);
cx = centered ? (w - utf8_strsw(buf))/2 : (1 + margin);
checked_wmove(error_win, cy++, cx);
wprint(error_win, buf);
}
}
box(error_win, 0, 0);
if(title[0] != '\0')
{
mvwprintw(error_win, 0, (w - strlen(title) - 2)/2, " %s ", title);
}
/* Print control message line by line. */
for(i = ctrl_msg_n; i > 0U; --i)
{
const size_t len = strcspn(ctrl_msg, "\n");
mvwaddnstr(error_win, h - i - 1, MAX(0, (w - (int)len)/2), ctrl_msg, len);
ctrl_msg = skip_char(ctrl_msg + len + 1U, '/');
}
}
/* Draws possibly centered formatted message with specified title and control
* message on error_win. */
static void
draw_msg(const char title[], const char msg[], const char ctrl_msg[],
int centered, int recommended_width)
{
enum { margin = 1 };
int sw, sh;
int w, h;
int max_h;
int len;
size_t ctrl_msg_n;
size_t wctrl_msg;
size_t i;
int first_line_x = 1;
const int first_line_y = 2;
curs_set(0);
getmaxyx(stdscr, sh, sw);
ctrl_msg_n = MAX(measure_sub_lines(ctrl_msg, &wctrl_msg), 1U);
max_h = sh - 2 - ctrl_msg_n + !cfg.display_statusline;
h = max_h;
/* The outermost condition is for VLA below (to calm static analyzers). */
w = MAX(2 + 2*margin, MIN(sw - 2,
MAX(MAX(recommended_width, sw/3),
(int)MAX(wctrl_msg, determine_width(msg)) + 4)));
wresize(error_win, h, w);
werase(error_win);
len = strlen(msg);
if(len <= w - 2 && strchr(msg, '\n') == NULL)
{
first_line_x = (w - len)/2;
h = 5 + ctrl_msg_n;
wresize(error_win, h, w);
mvwin(error_win, (sh - h)/2, (sw - w)/2);
checked_wmove(error_win, first_line_y, first_line_x);
wprint(error_win, msg);
}
else
{
int i = 0;
int cy = first_line_y;
while(i < len)
{
int j;
char buf[w - 2 - 2*margin + 1];
int cx;
copy_str(buf, sizeof(buf), msg + i);
for(j = 0; buf[j] != '\0'; j++)
if(buf[j] == '\n')
break;
if(buf[j] != '\0')
i++;
buf[j] = '\0';
i += j;
if(buf[0] == '\0')
continue;
if(cy >= max_h - (int)ctrl_msg_n - 3)
{
/* Skip trailing part of the message if it's too long, just print how
* many lines we're omitting. */
size_t max_len;
const int more_lines = 1U + measure_sub_lines(msg + i, &max_len);
snprintf(buf, sizeof(buf), "<<%d more line%s not shown>>", more_lines,
(more_lines == 1) ? "" : "s");
/* Make sure this is the last iteration of the loop. */
i = len;
}
h = 1 + cy + 1 + ctrl_msg_n + 1;
wresize(error_win, h, w);
mvwin(error_win, (sh - h)/2, (sw - w)/2);
cx = centered ? (w - utf8_strsw(buf))/2 : (1 + margin);
if(cy == first_line_y)
{
first_line_x = cx;
}
checked_wmove(error_win, cy++, cx);
wprint(error_win, buf);
}
}
box(error_win, 0, 0);
if(title[0] != '\0')
{
mvwprintw(error_win, 0, (w - strlen(title) - 2)/2, " %s ", title);
}
/* Print control message line by line. */
for(i = ctrl_msg_n; i > 0U; --i)
{
const size_t len = strcspn(ctrl_msg, "\n");
mvwaddnstr(error_win, h - i - 1, MAX(0, (w - (int)len)/2), ctrl_msg, len);
ctrl_msg = skip_char(ctrl_msg + len + 1U, '/');
}
checked_wmove(error_win, first_line_y, first_line_x);
}