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Workaround for NCurses output routines.

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Unlike S-Lang, NCurses always wraps long lines and unable trancate that
to pring only visible part of text. Therefore we have to implement our
own addch() wrappers.

Signed-off-by: Andrew Borodin <aborodin@vmail.ru>
This commit is contained in:
Andrew Borodin 2011-11-01 11:43:00 +03:00
parent 62fc80f5f7
commit e1f2b5b017
1 changed files with 111 additions and 29 deletions
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140
lib/tty/tty-ncurses.c
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@ -65,12 +65,19 @@
#define CTRL(x) ((x) & 0x1f)
#endif
#define yx_in_screen(y, x) \
(y >= 0 && y < LINES && x >= 0 && x < COLS)
/*** global variables ****************************************************************************/
/*** file scope type declarations ****************************************************************/
/*** file scope variables ************************************************************************/
/* ncurses supports cursor positions only within window */
/* We use our own cursor coordibates to support partially visible widgets */
static int mc_curs_row, mc_curs_col;
/*** file scope functions ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
@ -318,6 +325,19 @@ tty_touch_screen (void)
void
tty_gotoyx (int y, int x)
{
mc_curs_row = y;
mc_curs_col = x;
if (y < 0)
y = 0;
if (y >= LINES)
y = LINES - 1;
if (x < 0)
x = 0;
if (x >= COLS)
x = COLS - 1;
move (y, x);
}
@ -326,7 +346,8 @@ tty_gotoyx (int y, int x)
void
tty_getyx (int *py, int *px)
{
getyx (stdscr, *py, *px);
*py = mc_curs_row;
*px = mc_curs_col;
}
/* --------------------------------------------------------------------------------------------- */
@ -355,6 +376,9 @@ tty_draw_hline (int y, int x, int ch, int len)
move (y, x);
hline (ch, len);
move (y, x1);
mc_curs_row = y;
mc_curs_col = x1;
}
/* --------------------------------------------------------------------------------------------- */
@ -383,6 +407,9 @@ tty_draw_vline (int y, int x, int ch, int len)
move (y, x);
vline (ch, len);
move (y1, x);
mc_curs_row = y1;
mc_curs_col = x;
}
/* --------------------------------------------------------------------------------------------- */
@ -424,6 +451,9 @@ tty_fill_region (int y, int x, int rows, int cols, unsigned char ch)
}
move (y, x);
mc_curs_row = y;
mc_curs_col = x;
}
/* --------------------------------------------------------------------------------------------- */
@ -447,7 +477,9 @@ tty_display_8bit (gboolean what)
void
tty_print_char (int c)
{
addch (c);
if (yx_in_screen (mc_curs_row, mc_curs_col))
addch (c);
mc_curs_col++;
}
/* --------------------------------------------------------------------------------------------- */
@ -459,19 +491,37 @@ tty_print_anychar (int c)
if (mc_global.utf8_display || c > 255)
{
int res = g_unichar_to_utf8 (c, (char *) str);
int res;
res = g_unichar_to_utf8 (c, (char *) str);
if (res == 0)
{
str[0] = '.';
str[1] = '\0';
if (yx_in_screen (mc_curs_row, mc_curs_col))
addch ('.');
mc_curs_col++;
}
else
{
const char *s;
str[res] = '\0';
addstr (str_term_form ((char *) str));
s = str_term_form ((char *) str);
if (yx_in_screen (mc_curs_row, mc_curs_col))
addstr (s);
if (g_unichar_iswide (c))
mc_curs_col += 2;
else if (!g_unichar_iszerowidth (c))
mc_curs_col++;
}
}
else
addch (c);
{
if (yx_in_screen (mc_curs_row, mc_curs_col))
addch (c);
mc_curs_col++;
}
}
/* --------------------------------------------------------------------------------------------- */
@ -479,26 +529,31 @@ tty_print_anychar (int c)
void
tty_print_alt_char (int c, gboolean single)
{
if ((chtype) c == ACS_VLINE)
c = mc_tty_frm[single ? MC_TTY_FRM_VERT : MC_TTY_FRM_DVERT];
else if ((chtype) c == ACS_HLINE)
c = mc_tty_frm[single ? MC_TTY_FRM_HORIZ : MC_TTY_FRM_DHORIZ];
else if ((chtype) c == ACS_LTEE)
c = mc_tty_frm[single ? MC_TTY_FRM_LEFTMIDDLE : MC_TTY_FRM_DLEFTMIDDLE];
else if ((chtype) c == ACS_RTEE)
c = mc_tty_frm[single ? MC_TTY_FRM_RIGHTMIDDLE : MC_TTY_FRM_DRIGHTMIDDLE];
else if ((chtype) c == ACS_ULCORNER)
c = mc_tty_frm[single ? MC_TTY_FRM_LEFTTOP : MC_TTY_FRM_DLEFTTOP];
else if ((chtype) c == ACS_LLCORNER)
c = mc_tty_frm[single ? MC_TTY_FRM_LEFTBOTTOM : MC_TTY_FRM_DLEFTBOTTOM];
else if ((chtype) c == ACS_URCORNER)
c = mc_tty_frm[single ? MC_TTY_FRM_RIGHTTOP : MC_TTY_FRM_DRIGHTTOP];
else if ((chtype) c == ACS_LRCORNER)
c = mc_tty_frm[single ? MC_TTY_FRM_RIGHTBOTTOM : MC_TTY_FRM_DRIGHTBOTTOM];
else if ((chtype) c == ACS_PLUS)
c = mc_tty_frm[MC_TTY_FRM_CROSS];
if (yx_in_screen (mc_curs_row, mc_curs_col))
{
if ((chtype) c == ACS_VLINE)
c = mc_tty_frm[single ? MC_TTY_FRM_VERT : MC_TTY_FRM_DVERT];
else if ((chtype) c == ACS_HLINE)
c = mc_tty_frm[single ? MC_TTY_FRM_HORIZ : MC_TTY_FRM_DHORIZ];
else if ((chtype) c == ACS_LTEE)
c = mc_tty_frm[single ? MC_TTY_FRM_LEFTMIDDLE : MC_TTY_FRM_DLEFTMIDDLE];
else if ((chtype) c == ACS_RTEE)
c = mc_tty_frm[single ? MC_TTY_FRM_RIGHTMIDDLE : MC_TTY_FRM_DRIGHTMIDDLE];
else if ((chtype) c == ACS_ULCORNER)
c = mc_tty_frm[single ? MC_TTY_FRM_LEFTTOP : MC_TTY_FRM_DLEFTTOP];
else if ((chtype) c == ACS_LLCORNER)
c = mc_tty_frm[single ? MC_TTY_FRM_LEFTBOTTOM : MC_TTY_FRM_DLEFTBOTTOM];
else if ((chtype) c == ACS_URCORNER)
c = mc_tty_frm[single ? MC_TTY_FRM_RIGHTTOP : MC_TTY_FRM_DRIGHTTOP];
else if ((chtype) c == ACS_LRCORNER)
c = mc_tty_frm[single ? MC_TTY_FRM_RIGHTBOTTOM : MC_TTY_FRM_DRIGHTBOTTOM];
else if ((chtype) c == ACS_PLUS)
c = mc_tty_frm[MC_TTY_FRM_CROSS];
addch (c);
addch (c);
}
mc_curs_col++;
}
/* --------------------------------------------------------------------------------------------- */
@ -506,7 +561,32 @@ tty_print_alt_char (int c, gboolean single)
void
tty_print_string (const char *s)
{
addstr (str_term_form (s));
int len;
int start = 0;
s = str_term_form (s);
len = str_term_width1 (s);
/* line is upper or below the screen or entire line is before or after scrren */
if (mc_curs_row < 0 || mc_curs_row >= LINES || mc_curs_col + len <= 0 || mc_curs_col >= COLS)
{
mc_curs_col += len;
return;
}
/* skip invisible left part */
if (mc_curs_col < 0)
{
start = -mc_curs_col;
len += mc_curs_col;
mc_curs_col = 0;
}
mc_curs_col += len;
if (mc_curs_col >= COLS)
len = COLS - (mc_curs_col - len);
addstr (str_term_substring (s, start, len));
}
/* --------------------------------------------------------------------------------------------- */
@ -515,10 +595,12 @@ void
tty_printf (const char *fmt, ...)
{
va_list args;
char buf[BUF_1K]; /* FIXME: is it enough? */
va_start (args, fmt);
vw_printw (stdscr, fmt, args);
g_vsnprintf (buf, sizeof (buf), fmt, args);
va_end (args);
tty_print_string (buf);
}
/* --------------------------------------------------------------------------------------------- */