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/*
* $Id: clip_printw.c,v 1.1 2008/12/20 21:03:06 tom Exp $
*
* demonstrate how to use printw without wrapping.
*/
#include <test.priv.h>
#define SHOW(n) ((n) == ERR ? "ERR" : "OK")
#define COLOR_DEFAULT (-1)
typedef struct {
unsigned c;
unsigned v;
int status;
int pair;
unsigned attr;
int count;
int ch;
const char *c_msg;
const char *v_msg;
int y_val;
int x_val;
int y_beg, x_beg;
int y_max, x_max;
} STATUS;
static int
clip_wprintw(WINDOW *win, const char *fmt,...)
{
int y0, x0, y1, x1, width;
WINDOW *sub;
va_list ap;
int rc;
/*
* Allocate a single-line derived window extending from the current
* cursor position to the end of the current line in the given window.
* Disable scrolling in the derived window.
*/
getyx(win, y0, x0);
width = getmaxx(win) - x0;
sub = derwin(win, 1, width, y0, x0);
scrollok(sub, FALSE);
/*
* Print the text.
*/
va_start(ap, fmt);
rc = vw_printw(sub, fmt, ap);
va_end(ap);
getyx(sub, y1, x1);
delwin(sub);
wmove(win, y1 + y0, x1 + x0);
return rc;
}
static const char *
color_params(unsigned state, int *pair)
{
/* *INDENT-OFF* */
static struct {
int pair;
int fg, bg;
const char *msg;
} table[] = {
{ 0, COLOR_DEFAULT, COLOR_DEFAULT, "default" },
{ 1, COLOR_RED, COLOR_BLACK, "red/black" },
{ 2, COLOR_WHITE, COLOR_BLUE, "white/blue" },
};
/* *INDENT-ON* */
static bool first = TRUE;
const char *result = 0;
if (has_colors()) {
if (first) {
unsigned n;
start_color();
for (n = 0; n < SIZEOF(table); ++n) {
init_pair(table[n].pair, table[n].fg, table[n].bg);
}
}
if (state < SIZEOF(table)) {
*pair = table[state].pair;
result = table[state].msg;
}
}
return result;
}
static const char *
video_params(unsigned state, unsigned *attr)
{
/* *INDENT-OFF* */
static struct {
unsigned attr;
const char *msg;
} table[] = {
{ A_NORMAL, "normal" },
{ A_BOLD, "bold" },
{ A_REVERSE, "reverse" },
{ A_UNDERLINE, "underline" },
{ A_BLINK, "blink" },
};
/* *INDENT-ON* */
const char *result = 0;
if (state < SIZEOF(table)) {
*attr = table[state].attr;
result = table[state].msg;
}
return result;
}
/* fill the window with a test-pattern */
static void
fill_window(WINDOW *win)
{
int y, x;
getyx(win, y, x);
wmove(win, 0, 0);
while (waddstr(win, "0123456789 abcdefghijklmnopqrstuvwxyz ") != ERR) {
}
wmove(win, y, x);
}
static void
show_status(WINDOW *win, STATUS * sp)
{
int y, x;
getyx(win, y, x);
wmove(win, 0, 0);
wprintw(win, "Count %d", sp->count);
if (sp->v_msg != 0)
wprintw(win, " Video %s", sp->v_msg);
if (sp->c_msg != 0)
wprintw(win, " Color %s", sp->c_msg);
wprintw(win, " (%d)", sp->status);
wclrtoeol(win);
wmove(win, y, x);
}
static void
do_subwindow(WINDOW *win, STATUS * sp, void func(WINDOW *))
{
WINDOW *win1 = newwin(sp->y_max - 2, sp->x_max - 2,
sp->y_beg + 1, sp->x_beg + 1);
if (win1 != 0 && sp->y_max > 4 && sp->x_max > 4) {
WINDOW *win2 = derwin(win1, sp->y_max - 4, sp->x_max - 4, 1, 1);
if (win2 != 0) {
box(win1, 0, 0);
wrefresh(win1);
func(win2);
delwin(win2);
} else {
beep();
}
delwin(win1);
touchwin(win);
} else {
beep();
}
}
static void
init_status(WINDOW *win, STATUS * sp)
{
memset(sp, 0, sizeof(*sp));
sp->c = 99;
sp->v = 99;
sp->ch = ' ';
keypad(win, TRUE);
fill_window(win);
getbegyx(win, sp->y_beg, sp->x_beg);
getmaxyx(win, sp->y_max, sp->x_max);
}
static void
show_help(WINDOW *win)
{
static const char *table[] =
{
"Basic commands:"
,"Use h/j/k/l or arrow keys to move the cursor."
,"Set the count parameter for clip_wprintw by entering digits 0-9."
,""
,"Other commands:"
,"space toggles through the set of video attributes and colors."
,"t touches (forces repaint) of the current line."
,". calls clip_wprintw at the current position with the given count."
,"= resets count to zero."
,"? shows this help-window"
,""
};
int y_max, x_max;
int row;
getmaxyx(win, y_max, x_max);
for (row = 0; row < (int) SIZEOF(table) && row < y_max; ++row) {
mvwprintw(win, row, 0, "%.*s", x_max, table[row]);
}
while (wgetch(win) != 'q')
beep();
}
static void
update_status(WINDOW *win, STATUS * sp)
{
switch (sp->ch) {
case ' ': /* next test-iteration */
if (has_colors()) {
if ((sp->c_msg = color_params(++(sp->c), &(sp->pair))) == 0) {
sp->c_msg = color_params(sp->c = 0, &(sp->pair));
if ((sp->v_msg = video_params(++(sp->v), &(sp->attr))) == 0) {
sp->v_msg = video_params(sp->v = 0, &(sp->attr));
}
}
} else {
if ((sp->v_msg = video_params(++(sp->v), &(sp->attr))) == 0) {
sp->v_msg = video_params(sp->v = 0, &(sp->attr));
}
}
sp->count = 0;
show_status(win, sp);
break;
case KEY_LEFT:
case 'h':
if (sp->x_val > 0)
wmove(win, sp->y_val, --(sp->x_val));
break;
case KEY_DOWN:
case 'j':
if (sp->y_val < sp->y_max)
wmove(win, ++(sp->y_val), sp->x_val);
break;
case KEY_UP:
case 'k':
if (sp->y_val > 0)
wmove(win, --(sp->y_val), sp->x_val);
break;
case KEY_RIGHT:
case 'l':
if (sp->x_val < sp->x_max)
wmove(win, sp->y_val, ++(sp->x_val));
break;
case 't':
touchline(win, sp->y_val, 1);
break;
case '=':
sp->count = 0;
show_status(win, sp);
break;
case '?':
do_subwindow(win, sp, show_help);
break;
default:
if (isdigit(sp->ch)) {
sp->count = (sp->count * 10) + (sp->ch - '0');
show_status(win, sp);
} else {
beep();
}
break;
}
}
static void
test_clipping(WINDOW *win)
{
STATUS st;
char fmt[80];
char *buffer;
unsigned j, need;
init_status(win, &st);
do {
switch (st.ch) {
case '.': /* change from current position */
wattrset(win, st.attr | COLOR_PAIR(st.pair));
if (st.count > 0) {
need = st.count + 1;
sprintf(fmt, "%%c%%%ds%%c", st.count);
} else {
need = getmaxx(win) - 1;
strcpy(fmt, "%c%s%c");
}
if ((buffer = typeMalloc(char, need)) != 0) {
for (j = 0; j < need; ++j) {
buffer[j] = 'A' + (j % 26);
}
buffer[need - 1] = '\0';
st.status = clip_wprintw(win, fmt, '[', buffer, ']');
}
break;
case 'w':
do_subwindow(win, &st, test_clipping);
break;
case 'q':
return;
default:
update_status(win, &st);
break;
}
} while ((st.ch = wgetch(win)) != ERR);
}
int
main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED)
{
initscr();
cbreak();
noecho();
test_clipping(stdscr);
endwin();
ExitProgram(EXIT_SUCCESS);
}
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