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adding copy of ncurses programs

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Dan Buch 2009-11-18 19:01:16 -05:00
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23
ncurses_programs/COPYING Normal file
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Copyright (c) 2001, Pradeep Padala (ppadala@gmail.com)
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, distribute with
modifications, sublicense, and/or sell copies of the Software, and to permit
persons to whom the Software is furnished to do so, subject to the following
conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name(s) of the above copyright holders
shall not be used in advertising or otherwise to promote the sale, use or
other dealings in this Software without prior written authorization.

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# Makefile for JustForFun Files
# A few variables
CC=gcc
LIBS=-lncurses
SRC_DIR=.
EXE_DIR=../demo/exe
EXES = \
${EXE_DIR}/hanoi \
${EXE_DIR}/life\
${EXE_DIR}/magic \
${EXE_DIR}/queens \
${EXE_DIR}/shuffle \
${EXE_DIR}/tt
${EXE_DIR}/%: %.o
${CC} -o $@ $< ${LIBS}
%.o: ${SRC_DIR}/%.c
${CC} -o $@ -c $<
all: ${EXES}
clean:
@rm -f ${EXES}

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ncurses_programs/JustForFun/README Normal file
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Description of files
--------------------
JustForFun
|
|----> hanoi.c -- The Towers of Hanoi Solver
|----> life.c -- The Game of Life demo
|----> magic.c -- An Odd Order Magic Square builder
|----> queens.c -- The famous N-Queens Solver
|----> shuffle.c -- A fun game, if you have time to kill
|----> tt.c -- A very trivial typing tutor

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ncurses_programs/JustForFun/hanoi.c Normal file
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#include <curses.h>
#define POSX 10
#define POSY 5
#define DISC_CHAR '*'
#define PEG_CHAR '#'
#define TIME_OUT 300
typedef struct _peg_struct {
int n_discs; /* Number of discs at present */
int bottomx, bottomy; /* bottom x, bottom y co-ord */
int *sizes; /* The disc sizes array */
}peg;
void init_pegs(peg *p_my_pegs, int n_discs);
void show_pegs(WINDOW *win, peg *p_my_pegs, int n_discs);
void free_pegs(peg *p_my_pegs, int n_discs);
void solve_hanoi(peg *p_my_pegs, int n, int src, int aux, int dst);
void move_disc(peg *p_my_pegs, int n_discs, int src, int dst);
void print_in_middle(int startx, int starty, int width, char *string, WINDOW *win);
void check_usr_response(peg *p_my_pegs, int n_discs);
int store_n_discs;
char *welcome_string = "Enter the number of discs you want to be solved: ";
int main(int argc, char *argv[])
{ int n_discs;
peg my_pegs[3];
initscr(); /* Start curses mode */
cbreak(); /* Line buffering disabled. Pass on every thing */
keypad(stdscr, TRUE);
curs_set(FALSE);
print_in_middle(0, LINES / 2, COLS, welcome_string, NULL);
scanw("%d", &n_discs);
timeout(TIME_OUT);
noecho();
store_n_discs = n_discs;
init_pegs(my_pegs, n_discs);
show_pegs(stdscr, my_pegs, n_discs);
solve_hanoi(my_pegs, n_discs, 0, 1, 2);
free_pegs(my_pegs, n_discs);
endwin(); /* End curses mode */
return 0;
}
void solve_hanoi(peg *p_my_pegs, int n_discs, int src, int aux, int dst)
{ if(n_discs == 0)
return;
solve_hanoi(p_my_pegs, n_discs - 1, src, dst, aux);
move_disc(p_my_pegs, store_n_discs, src, dst);
show_pegs(stdscr, p_my_pegs, store_n_discs);
check_usr_response(p_my_pegs, store_n_discs);
solve_hanoi(p_my_pegs, n_discs - 1, aux, src, dst);
}
void check_usr_response(peg *p_my_pegs, int n_discs)
{ int ch;
ch = getch(); /* Waits for TIME_OUT milliseconds */
if(ch == ERR)
return;
else
if(ch == KEY_F(1))
{ free_pegs(p_my_pegs, n_discs);
endwin();
exit(0);
}
}
void move_disc(peg *p_my_pegs, int n_discs, int src, int dst)
{ int temp, index;
--p_my_pegs[src].n_discs;
index = 0;
while(p_my_pegs[src].sizes[index] == 0 && index != n_discs)
++index;
temp = p_my_pegs[src].sizes[index];
p_my_pegs[src].sizes[index] = 0;
index = 0;
while(p_my_pegs[dst].sizes[index] == 0 && index != n_discs)
++index;
--index;
p_my_pegs[dst].sizes[index] = temp;
++p_my_pegs[dst].n_discs;
}
void init_pegs(peg *p_my_pegs, int n_discs)
{ int size, temp, i;
p_my_pegs[0].n_discs = n_discs;
/* Allocate memory for size array
* atmost the number of discs on a peg can be n_discs
*/
for(i = 0; i < n_discs; ++i)
p_my_pegs[i].sizes = (int *)calloc(n_discs, sizeof(int));
size = 3;
for(i = 0;i < n_discs; ++i, size += 2)
p_my_pegs[0].sizes[i] = size;
temp = (p_my_pegs[0].sizes[n_discs - 1] / 2);
p_my_pegs[0].bottomx = POSX + 1 + temp;
p_my_pegs[0].bottomy = POSY + 2 + n_discs;
p_my_pegs[1].bottomx = p_my_pegs[0].bottomx + 2 + 2 * temp;
p_my_pegs[1].bottomy = POSY + 2 + n_discs;
p_my_pegs[2].bottomx = p_my_pegs[1].bottomx + 2 + 2 * temp;
p_my_pegs[2].bottomy = POSY + 2 + n_discs;
}
void show_pegs(WINDOW *win, peg *p_my_pegs, int n_discs)
{ int i, j, k, x, y, size;
wclear(win);
attron(A_REVERSE);
mvprintw(24, 0, "Press F1 to Exit");
attroff(A_REVERSE);
for(i = 0;i < 3; ++i)
mvwprintw( win, p_my_pegs[i].bottomy - n_discs - 1,
p_my_pegs[i].bottomx, "%c", PEG_CHAR);
y = p_my_pegs[0].bottomy - n_discs;
for(i = 0; i < 3; ++i) /* For each peg */
{ for(j = 0; j < n_discs; ++ j) /* For each row */
{ if(p_my_pegs[i].sizes[j] != 0)
{ size = p_my_pegs[i].sizes[j];
x = p_my_pegs[i].bottomx - (size / 2);
for(k = 0; k < size; ++k)
mvwprintw(win, y, x + k, "%c", DISC_CHAR);
}
else
mvwprintw(win, y, p_my_pegs[i].bottomx, "%c", PEG_CHAR);
++y;
}
y = p_my_pegs[0].bottomy - n_discs;
}
wrefresh(win);
}
void free_pegs(peg *p_my_pegs, int n_discs)
{ int i;
for(i = 0;i < n_discs; ++i)
free(p_my_pegs[i].sizes);
}
/* -------------------------------------------------------------*
* startx = 0 means at present x *
* starty = 0 means at present y *
* win = NULL means take stdscr *
* -------------------------------------------------------------*/
void print_in_middle(int startx, int starty, int width, char *string, WINDOW *win)
{ int length, x, y;
float temp;
if(win == NULL)
win = stdscr;
getyx(win, y, x);
if(startx != 0)
x = startx;
if(starty != 0)
y = starty;
if(width == 0)
width = 80;
length = strlen(string);
temp = (width - length)/ 2;
x = startx + (int)temp;
mvwprintw(win, y, x, "%s", string);
refresh();
}

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#include <curses.h>
int STARTX = 0;
int STARTY = 0;
int ENDX = 79;
int ENDY = 24;
#define CELL_CHAR '#'
#define TIME_OUT 300
typedef struct _state {
int oldstate;
int newstate;
}state;
void display(WINDOW *win, state **area, int startx, int starty, int endx, int endy);
void calc(state **area, int x, int y);
void update_state(state **area, int startx, int starty, int endx, int endy);
int main()
{ state **workarea;
int i, j;
initscr();
cbreak();
timeout(TIME_OUT);
keypad(stdscr, TRUE);
ENDX = COLS - 1;
ENDY = LINES - 1;
workarea = (state **)calloc(COLS, sizeof(state *));
for(i = 0;i < COLS; ++i)
workarea[i] = (state *)calloc(LINES, sizeof(state));
/* For inverted U */
workarea[39][15].newstate = TRUE;
workarea[40][15].newstate = TRUE;
workarea[41][15].newstate = TRUE;
workarea[39][16].newstate = TRUE;
workarea[39][17].newstate = TRUE;
workarea[41][16].newstate = TRUE;
workarea[41][17].newstate = TRUE;
update_state(workarea, STARTX, STARTY, ENDX, ENDY);
/* For block */
/*
workarea[37][13].newstate = TRUE;
workarea[37][14].newstate = TRUE;
workarea[38][13].newstate = TRUE;
workarea[38][14].newstate = TRUE;
update_state(workarea, STARTX, STARTY, ENDX, ENDY);
*/
display(stdscr, workarea, STARTX, STARTY, ENDX, ENDY);
while(getch() != KEY_F(1))
{ for(i = STARTX; i <= ENDX; ++i)
for(j = STARTY; j <= ENDY; ++j)
calc(workarea, i, j);
update_state(workarea, STARTX, STARTY, ENDX, ENDY);
display(stdscr, workarea, STARTX, STARTY, ENDX, ENDY);
}
endwin();
return 0;
}
void display(WINDOW *win, state **area, int startx, int starty, int endx, int endy)
{ int i, j;
wclear(win);
for(i = startx; i <= endx; ++i)
for(j = starty;j <= endy; ++j)
if(area[i][j].newstate == TRUE)
mvwaddch(win, j, i, CELL_CHAR);
wrefresh(win);
}
void calc(state **area, int i, int j)
{ int neighbours;
int newstate;
neighbours =
area[(i - 1 + COLS) % COLS][j].oldstate +
area[(i - 1 + COLS) % COLS][(j - 1 + LINES) % LINES].oldstate +
area[(i - 1 + COLS) % COLS][(j + 1) % LINES].oldstate +
area[(i + 1) % COLS][j].oldstate +
area[(i + 1) % COLS][(j - 1 + LINES) % LINES].oldstate +
area[(i + 1) % COLS][(j + 1) % LINES].oldstate +
area[i][(j - 1 + LINES) % LINES].oldstate +
area[i][(j + 1) % LINES].oldstate;
newstate = FALSE;
if(area[i][j].oldstate == TRUE && (neighbours == 2 || neighbours == 3))
newstate = TRUE;
else
if(area[i][j].oldstate == FALSE && neighbours == 3)
newstate = TRUE;
area[i][j].newstate = newstate;
}
void update_state(state **area, int startx, int starty, int endx, int endy)
{ int i, j;
for(i = startx; i <= endx; ++i)
for(j = starty; j <= endy; ++j)
area[i][j].oldstate = area[i][j].newstate;
}

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#include <curses.h>
#include <stdlib.h>
#define STARTX 9
#define STARTY 3
#define WIDTH 6
#define HEIGHT 4
#define TRACE_VALUE TRACE_MAXIMUM
void board( WINDOW *win, int starty, int startx, int lines, int cols,
int tile_width, int tile_height);
void magic(int **, int);
void print(int **, int);
void magic_board(int **a,int n);
int main(int argc, char *argv[])
{
int **a,n,i;
if(argc != 2)
{ printf("Usage: %s <magic sqaure order>\n", argv[0]);
exit(0);
}
n = atoi(argv[1]);
if(n % 2 == 0)
{ printf("Sorry !!! I don't know how to create magic square of even order\n");
printf("The order should be an odd number\n");
exit(0);
}
a = (int **) malloc(n * sizeof(int*));
for(i = 0;i < n;++i)
a[i] = (int *)malloc(n * sizeof(int));
magic(a,n);
initscr();
curs_set(0);
noecho();
magic_board(a,n);
getch();
endwin();
return;
}
void magic(int **a, int n)
{
int i,j,k;
int row,col;
for(i = 0;i < n;++i)
for(j = 0;j < n;++j)
a[i][j] = -1;
row = 0;
col = n / 2;
k = 1;
a[row][col] = k;
while(k != n * n)
{
if(row == 0 && col != n - 1)
{ row = n - 1;
col ++;
a[row][col] = ++k;
}
else if(row != 0 && col != n - 1)
{ if(a[row - 1][col + 1] == -1)
{ row --;
col ++;
a[row][col] = ++k;
}
else
{
row ++;
a[row][col] = ++k;
}
}
else if(row != 0 && col == n - 1)
{
row --;
col = 0;
a[row][col] = ++k;
}
else if(row == 0 && col == n - 1)
{ row ++;
a[row][col] = ++k;
}
}
return;
}
void print(int **a,int n)
{ int i,j;
int x,y;
x = STARTX;
y = STARTY;
mvprintw(1,30,"MAGIC SQUARE");
for(i = 0;i < n;++i)
{ for(j = 0;j < n;++j)
{ mvprintw(y,x,"%d",a[i][j]);
if(n > 9)
x += 4;
else
x += 6;
}
x = STARTX;
if(n > 7)
y += 2;
else
y += 3;
}
refresh();
}
void board(WINDOW *win, int starty, int startx, int lines, int cols,
int tile_width, int tile_height)
{ int endy, endx, i, j;
endy = starty + lines * tile_height;
endx = startx + cols * tile_width;
for(j = starty; j <= endy; j += tile_height)
for(i = startx; i <= endx; ++i)
mvwaddch(win, j, i, ACS_HLINE);
for(i = startx; i <= endx; i += tile_width)
for(j = starty; j <= endy; ++j)
mvwaddch(win, j, i, ACS_VLINE);
mvwaddch(win, starty, startx, ACS_ULCORNER);
mvwaddch(win, endy, startx, ACS_LLCORNER);
mvwaddch(win, starty, endx, ACS_URCORNER);
mvwaddch(win, endy, endx, ACS_LRCORNER);
for(j = starty + tile_height; j <= endy - tile_height; j += tile_height)
{ mvwaddch(win, j, startx, ACS_LTEE);
mvwaddch(win, j, endx, ACS_RTEE);
for(i = startx + tile_width; i <= endx - tile_width; i += tile_width)
mvwaddch(win, j, i, ACS_PLUS);
}
for(i = startx + tile_width; i <= endx - tile_width; i += tile_width)
{ mvwaddch(win, starty, i, ACS_TTEE);
mvwaddch(win, endy, i, ACS_BTEE);
}
wrefresh(win);
}
void magic_board(int **a,int n)
{ int i,j, deltax, deltay;
int startx, starty;
starty = (LINES - n * HEIGHT) / 2;
startx = (COLS - n * WIDTH) / 2;
board(stdscr, starty, startx, n, n, WIDTH, HEIGHT);
deltay = HEIGHT / 2;
deltax = WIDTH / 2;
for(i = 0;i < n; ++i)
for(j = 0; j < n; ++j)
mvprintw(starty + j * HEIGHT + deltay,
startx + i * WIDTH + deltax,
"%d", a[i][j]);
}

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#include <stdio.h>
#include <curses.h>
#define QUEEN_CHAR '*'
int *nqueens(int num);
int place(int current, int *position);
int print(int *positions, int num_queens);
void board(WINDOW *win, int starty, int startx, int lines, int cols,
int tile_width, int tile_height);
int main(int argc, char *argv[])
{
int num_queens, *positions, count;
if(argc != 2)
{ printf("Usage: %s <number of queens (chess board order)>\n", argv[0]);
exit(1);
}
num_queens = atoi(argv[1]);
initscr();
cbreak();
keypad(stdscr, TRUE);
positions = nqueens(num_queens);
free(positions);
endwin();
return 0;
}
int *nqueens(int num)
{
int current, *position, num_solutions = 0;
position = (int *) calloc(num + 1, sizeof(int));
position[1] = 0;
current = 1; /* current queen is being checked */
/* position[current] is the coloumn*/
while(current > 0){
position[current] += 1;
while(position[current] <= num && !place(current, position) )
position[current] += 1;
if(position[current] <= num){
if(current == num) {
++num_solutions;
print(position, num);
}
else {
current += 1;
position[current] = 0;
}
}
else current -= 1; /* backtrack */
}
printf("Total Number of Solutions : %d\n", num_solutions);
return(position);
}
int place(int current, int *position)
{
int i;
if(current == 1) return(1);
for(i = 1; i < current; ++i)
if(position[i] == position[current]) return(0);
else if(abs(position[i] - position[current]) ==
abs(i - current))
return(0);
return(1);
}
int print(int *positions, int num_queens)
{ int count;
int y = 2, x = 2, w = 4, h = 2;
static int solution = 1;
mvprintw(0, 0, "Solution No: %d", solution++);
board(stdscr, y, x, num_queens, num_queens, w, h);
for(count = 1; count <= num_queens; ++count)
{ int tempy = y + (count - 1) * h + h / 2;
int tempx = x + (positions[count] - 1) * w + w / 2;
mvaddch(tempy, tempx, QUEEN_CHAR);
}
refresh();
mvprintw(LINES - 2, 0, "Press Any Key to See next solution (F1 to Exit)");
if(getch() == KEY_F(1))
{ endwin();
exit(0);
}
clear();
}
void board(WINDOW *win, int starty, int startx, int lines, int cols,
int tile_width, int tile_height)
{ int endy, endx, i, j;
endy = starty + lines * tile_height;
endx = startx + cols * tile_width;
for(j = starty; j <= endy; j += tile_height)
for(i = startx; i <= endx; ++i)
mvwaddch(win, j, i, ACS_HLINE);
for(i = startx; i <= endx; i += tile_width)
for(j = starty; j <= endy; ++j)
mvwaddch(win, j, i, ACS_VLINE);
mvwaddch(win, starty, startx, ACS_ULCORNER);
mvwaddch(win, endy, startx, ACS_LLCORNER);
mvwaddch(win, starty, endx, ACS_URCORNER);
mvwaddch(win, endy, endx, ACS_LRCORNER);
for(j = starty + tile_height; j <= endy - tile_height; j += tile_height)
{ mvwaddch(win, j, startx, ACS_LTEE);
mvwaddch(win, j, endx, ACS_RTEE);
for(i = startx + tile_width; i <= endx - tile_width; i += tile_width)
mvwaddch(win, j, i, ACS_PLUS);
}
for(i = startx + tile_width; i <= endx - tile_width; i += tile_width)
{ mvwaddch(win, starty, i, ACS_TTEE);
mvwaddch(win, endy, i, ACS_BTEE);
}
wrefresh(win);
}

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#include <curses.h>
#define STARTX 9
#define STARTY 3
#define WIDTH 6
#define HEIGHT 4
#define BLANK 0
typedef struct _tile {
int x;
int y;
}tile;
void init_board(int **board, int n, tile *blank);
void board(WINDOW *win, int starty, int startx, int lines, int cols,
int tile_width, int tile_height);
void shuffle_board(int **board, int n);
void move_blank(int direction, int **s_board, int n, tile *blank);
int check_win(int **s_board, int n, tile *blank);
enum { LEFT, RIGHT, UP, DOWN };
int main(int argc, char *argv[])
{ int **s_board;
int n, i, ch;
tile blank;
if(argc != 2)
{ printf("Usage: %s <shuffle board order>\n", argv[0]);
exit(1);
}
n = atoi(argv[1]);
s_board = (int **)calloc(n, sizeof(int *));
for(i = 0;i < n; ++i)
s_board[i] = (int *)calloc(n, sizeof(int));
init_board(s_board, n, &blank);
initscr();
keypad(stdscr, TRUE);
cbreak();
shuffle_board(s_board, n);
while((ch = getch()) != KEY_F(1))
{ switch(ch)
{ case KEY_LEFT:
move_blank(RIGHT, s_board, n, &blank);
break;
case KEY_RIGHT:
move_blank(LEFT, s_board, n, &blank);
break;
case KEY_UP:
move_blank(DOWN, s_board, n, &blank);
break;
case KEY_DOWN:
move_blank(UP, s_board, n, &blank);
break;
}
shuffle_board(s_board, n);
if(check_win(s_board, n, &blank) == TRUE)
{ mvprintw(24, 0, "You Win !!!\n");
refresh();
break;
}
}
endwin();
return 0;
}
void move_blank(int direction, int **s_board, int n, tile *blank)
{ int temp;
switch(direction)
{ case LEFT:
{ if(blank->x != 0)
{ --blank->x;
temp = s_board[blank->x][blank->y];
s_board[blank->x + 1][blank->y] = temp;
s_board[blank->x][blank->y] = BLANK;
}
}
break;
case RIGHT:
{ if(blank->x != n - 1)
{ ++blank->x;
temp = s_board[blank->x][blank->y];
s_board[blank->x - 1][blank->y] = temp;
s_board[blank->x][blank->y] = BLANK;
}
}
break;
case UP:
{ if(blank->y != 0)
{ --blank->y;
temp = s_board[blank->x][blank->y];
s_board[blank->x][blank->y + 1] = temp;
s_board[blank->x][blank->y] = BLANK;
}
}
break;
case DOWN:
{ if(blank->y != n - 1)
{ ++blank->y;
temp = s_board[blank->x][blank->y];
s_board[blank->x][blank->y - 1] = temp;
s_board[blank->x][blank->y] = BLANK;
}
}
break;
}
}
int check_win(int **s_board, int n, tile *blank)
{ int i, j;
s_board[blank->x][blank->y] = n * n;
for(i = 0;i < n; ++i)
for(j = 0;j < n; ++j)
if(s_board[i][j] != j * n + i + 1)
{ s_board[blank->x][blank->y] = BLANK;
return FALSE;
}
s_board[blank->x][blank->y] = BLANK;
return TRUE;
}
void init_board(int **s_board, int n, tile *blank)
{ int i, j, k;
int *temp_board;
temp_board = (int *)calloc(n * n, sizeof(int));
srand(time(NULL));
for(i = 0;i < n * n; ++i)
{
repeat :
k = rand() % (n * n);
for(j = 0;j <= i - 1; ++j)
if (k == temp_board[j])
goto repeat;
else
temp_board[i] = k;
}
k = 0;
for (i = 0;i < n;++i)
for(j = 0;j < n; ++j,++k)
{ if(temp_board[k] == 0)
{ blank->x = i;
blank->y = j;
}
s_board[i][j] = temp_board[k];
}
free(temp_board);
}
void board(WINDOW *win, int starty, int startx, int lines, int cols,
int tile_width, int tile_height)
{ int endy, endx, i, j;
endy = starty + lines * tile_height;
endx = startx + cols * tile_width;
for(j = starty; j <= endy; j += tile_height)
for(i = startx; i <= endx; ++i)
mvwaddch(win, j, i, ACS_HLINE);
for(i = startx; i <= endx; i += tile_width)
for(j = starty; j <= endy; ++j)
mvwaddch(win, j, i, ACS_VLINE);
mvwaddch(win, starty, startx, ACS_ULCORNER);
mvwaddch(win, endy, startx, ACS_LLCORNER);
mvwaddch(win, starty, endx, ACS_URCORNER);
mvwaddch(win, endy, endx, ACS_LRCORNER);
for(j = starty + tile_height; j <= endy - tile_height; j += tile_height)
{ mvwaddch(win, j, startx, ACS_LTEE);
mvwaddch(win, j, endx, ACS_RTEE);
for(i = startx + tile_width; i <= endx - tile_width; i += tile_width)
mvwaddch(win, j, i, ACS_PLUS);
}
for(i = startx + tile_width; i <= endx - tile_width; i += tile_width)
{ mvwaddch(win, starty, i, ACS_TTEE);
mvwaddch(win, endy, i, ACS_BTEE);
}
wrefresh(win);
}
void shuffle_board(int **s_board, int n)
{ int i,j, deltax, deltay;
int startx, starty;
starty = (LINES - n * HEIGHT) / 2;
startx = (COLS - n * WIDTH) / 2;
clear();
mvprintw(24, 0, "Press F1 to Exit");
board(stdscr, starty, startx, n, n, WIDTH, HEIGHT);
deltay = HEIGHT / 2;
deltax = WIDTH / 2;
for(j = 0; j < n; ++j)
for(i = 0;i < n; ++i)
if(s_board[i][j] != BLANK)
mvprintw(starty + j * HEIGHT + deltay,
startx + i * WIDTH + deltax,
"%-2d", s_board[i][j]);
refresh();
}

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#include <curses.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#define HSIZE 60
#define LENGTH 75
#define WIDTH 10
#define STARTX 1
#define STARTY 5
#define STATUSX 1
#define STATUSY 25
#define KEY_F1 265
int print_menu();
void print_byebye();
void create_test_string();
void print_time(time_t startt, time_t endt, int mistakes);
void print_in_middle(int startx, int starty, int width, char *string, WINDOW *win);
char *groups[] = { "`123456" ,
"7890-=" ,
"~!@#$%^" ,
"&*()_+" ,
"<>?" ,
",./\\" ,
"asdfg",
"jkl;'",
"qwer",
"uiop",
"tyur",
"zxcv",
"bnm",
};
int n_groups;
int main()
{ int choice, i;
char *test_array;
int ch = KEY_F1;
int mistakes;
int x, y;
time_t start_t, end_t;
WINDOW *typing_win;
char string[80];
string[0] = '\0';
initscr();
cbreak();
noecho();
keypad(stdscr, TRUE);
intrflush(stdscr, FALSE);
srandom(time(NULL));
n_groups = sizeof(groups) / sizeof(char *);
test_array = (char *)calloc(HSIZE + 1, sizeof(char));
while(1)
{
if(ch == KEY_F1)
{ choice = print_menu();
choice -= 1;
if(choice == n_groups)
{ print_byebye();
free(test_array);
endwin();
exit(0);
}
}
clear();
strcpy(string, "Typing window");
print_in_middle(STARTX, STARTY - 2, LENGTH, string, NULL);
attron(A_REVERSE);
mvprintw(STATUSY, STATUSX, "Press F1 to Main Menu");
refresh();
attroff(A_REVERSE);
create_test_string(test_array, choice);
typing_win = newwin(WIDTH, LENGTH, STARTY, STARTX);
keypad(typing_win, TRUE);
intrflush(typing_win, FALSE);
box(typing_win, 0, 0);
x = 1;
y = 1;
mvwprintw(typing_win, y, x, "%s", test_array);
wrefresh(typing_win);
y += 1;
mistakes = 0;
i = 0;
time(&start_t);
wmove(typing_win, y, x);
wrefresh(typing_win);
ch = 0;
while(ch != KEY_F1 && i != HSIZE + 1)
{ ch = wgetch(typing_win);
mvwprintw(typing_win, y, x, "%c", ch);
wrefresh(typing_win);
++x;
if(ch == test_array[i])
{ ++i;
continue;
}
else
{ ++mistakes;
++i;
}
}
time(&end_t);
print_time(start_t, end_t, mistakes);
}
free(test_array);
endwin();
return 0;
}
int print_menu()
{ int choice, i;
choice = 0;
while(1)
{ clear();
printw("\n\n");
print_in_middle(1, 1, 0, "* * * Welcome to typing practice (Version 1.0) * * * ", NULL);
printw("\n\n\n");
for(i = 0;i <= n_groups - 1; ++i)
printw("\t%3d: \tPractice %s\n", i + 1, groups[i]);
printw("\t%3d: \tExit\n", i + 1);
printw("\n\n\tChoice: ");
refresh();
echo();
scanw("%d", &choice);
noecho();
if(choice >= 1 && choice <= n_groups + 1)
break;
else
{ attron(A_REVERSE);
mvprintw(STATUSY, STATUSX, "Wrong choice\tPress any key to continue");
attroff(A_REVERSE);
getch();
}
}
return choice;
}
void create_test_string(char *test_array, int choice)
{ int i, index, length;
length = strlen(groups[choice]);
for(i = 0;i <= HSIZE - 1; ++i)
{ if(i%5 == 0)
test_array[i] = ' ';
else
{ index = (int)(random() % length);
test_array[i] = groups[choice][index];
}
}
test_array[i] = '\0';
}
void print_byebye()
{ printw("\n");
print_in_middle(0,0,0,"Thank you for using my typing tutor\n", NULL);
print_in_middle(0,0,0,"Bye Bye ! ! !\n", NULL);
refresh();
}
void print_time(time_t start_t, time_t end_t, int mistakes)
{ long int diff;
int h,m,s;
float wpm;
diff = end_t - start_t;
wpm = ((HSIZE / 5)/(double)diff)*60;
h = (int)(diff / 3600);
diff -= h * 3600;
m = (int)(diff / 60);
diff -= m * 60;
s = (int)diff;
attron(A_REVERSE);
mvprintw(STATUSY, STATUSX, "Mistakes made : %d time taken: %d:%d:%d WPM : %.2f Press any Key to continue", mistakes, h, m, s, wpm);
attroff(A_REVERSE);
refresh();
getch();
}
/* ---------------------------------------------------------------- *
* startx = 0 means at present x *
* starty = 0 means at present y *
* win = NULL means take stdscr *
* ---------------------------------------------------------------- */
void print_in_middle(int startx, int starty, int width, char *string, WINDOW *win)
{ int length, x, y;
float temp;
if(win == NULL)
win = stdscr;
getyx(win, y, x);
if(startx != 0)
x = startx;
if(starty != 0)
y = starty;
if(width == 0)
width = 80;
length = strlen(string);
temp = (width - length)/ 2;
x = startx + (int)temp;
mvwprintw(win, y, x, "%s", string);
refresh();
}

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# The top level Makefile
all:
cd JustForFun && $(MAKE)
cd basics && $(MAKE)
cd forms && $(MAKE)
cd menus && $(MAKE)
cd panels && $(MAKE)
@echo
@echo "*********************************************"
@echo "All files Built"
@echo "Please move to demo/exe directory"
@echo "Execute each file to see examples in action"
@echo "*********************************************"
@echo
clean:
cd JustForFun && $(MAKE) clean
cd basics && $(MAKE) clean
cd forms && $(MAKE) clean
cd menus && $(MAKE) clean
cd panels && $(MAKE) clean

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This is the top level README file.
This directory is structured as follows:
ncurses
|
|----> JustForFun -- just for fun programs
|----> basics -- basic programs
|----> demo -- output files go into this directory after make
| |
| |----> exe -- exe files of all example programs
|----> forms -- programs related to form library
|----> menus -- programs related to menus library
|----> panels -- programs related to panels library
|----> perl -- perl equivalents of the examples (contributed
| by Anuradha Ratnaweera)
|----> Makefile -- the top level Makefile
|----> README -- the top level README file. contains instructions
| -- to create executables for example programs
To compile and install all example programs, just run make in this directory.
make
It installs all the exe files in demo/exe directory. You can go to that direcory
and see the examples in action.
Have Fun !!!
-- Pradeep Padala
Description of files in each directory
--------------------------------------
JustForFun
|
|----> hanoi.c -- The Towers of Hanoi Solver
|----> life.c -- The Game of Life demo
|----> magic.c -- An Odd Order Magic Square builder
|----> queens.c -- The famous N-Queens Solver
|----> shuffle.c -- A fun game, if you have time to kill
|----> tt.c -- A very trivial typing tutor
basics
|
|----> acs_vars.c -- ACS_ variables example
|----> hello_world.c -- Simple "Hello World" Program
|----> init_func_example.c -- Initialization functions example
|----> key_code.c -- Shows the scan code of the key pressed
|----> mouse_menu.c -- A menu accessible by mouse
|----> other_border.c -- Shows usage of other border functions apart
| -- box()
|----> printw_example.c -- A very simple printw() example
|----> scanw_example.c -- A very simple getstr() example
|----> simple_attr.c -- A program that can print a c file with comments
| -- in attribute
|----> simple_color.c -- A simple example demonstrating colors
|----> simple_key.c -- A menu accessible with keyboard UP, DOWN arrows
|----> temp_leave.c -- Demonstrates temporarily leaving curses mode
|----> win_border.c -- Shows Creation of windows and borders
|----> with_chgat.c -- chgat() usage example
forms
|
|----> form_attrib.c -- Usage of field attributes
|----> form_options.c -- Usage of field options
|----> form_simple.c -- A simple form example
|----> form_win.c -- Demo of windows associated with forms
menus
|
|----> menu_attrib.c -- Usage of menu attributes
|----> menu_item_data.c -- Usage of item_name() etc.. functions
|----> menu_multi_column.c -- Creates multi columnar menus
|----> menu_scroll.c -- Demonstrates scrolling capability of menus
|----> menu_simple.c -- A simple menu accessed by arrow keys
|----> menu_toggle.c -- Creates multi valued menus and explains
| -- REQ_TOGGLE_ITEM
|----> menu_userptr.c -- Usage of user pointer
|----> menu_win.c -- Demo of windows associated with menus
panels
|
|----> panel_browse.c -- Panel browsing through tab. Usage of user pointer
|----> panel_hide.c -- Hiding and Un hiding of panels
|----> panel_resize.c -- Moving and resizing of panels
|----> panel_simple.c -- A simple panel example
perl
|----> 01-10.pl -- Perl equivalents of first ten example programs

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# Makefile for JustForFun Files
# A few variables
CC=gcc
LIBS=-lncurses
SRC_DIR=.
EXE_DIR=../demo/exe
EXES = \
${EXE_DIR}/hello_world \
${EXE_DIR}/init_func_example \
${EXE_DIR}/key_code \
${EXE_DIR}/mouse_menu \
${EXE_DIR}/other_border \
${EXE_DIR}/printw_example \
${EXE_DIR}/scanw_example \
${EXE_DIR}/simple_attr \
${EXE_DIR}/simple_color \
${EXE_DIR}/simple_key \
${EXE_DIR}/temp_leave \
${EXE_DIR}/win_border \
${EXE_DIR}/with_chgat
${EXE_DIR}/%: %.o
${CC} -o $@ $< ${LIBS}
%.o: ${SRC_DIR}/%.c
${CC} -o $@ -c $<
all: ${EXES}
clean:
@rm -f ${EXES}

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Description of files
--------------------
basics
|
|----> acs_vars.c -- ACS_ variables example
|----> hello_world.c -- Simple "Hello World" Program
|----> init_func_example.c -- Initialization functions example
|----> key_code.c -- Shows the scan code of the key pressed
|----> mouse_menu.c -- A menu accessible by mouse
|----> other_border.c -- Shows usage of other border functions apart
| -- box()
|----> printw_example.c -- A very simple printw() example
|----> scanw_example.c -- A very simple getstr() example
|----> simple_attr.c -- A program that can print a c file with comments
| -- in attribute
|----> simple_color.c -- A simple example demonstrating colors
|----> simple_key.c -- A menu accessible with keyboard UP, DOWN arrows
|----> temp_leave.c -- Demonstrates temporarily leaving curses mode
|----> win_border.c -- Shows Creation of windows and borders
|----> with_chgat.c -- chgat() usage example

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ncurses_programs/basics/acs_vars.c Normal file
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#include <ncurses.h>
int main()
{
initscr();
printw("Upper left corner "); addch(ACS_ULCORNER); printw("\n");
printw("Lower left corner "); addch(ACS_LLCORNER); printw("\n");
printw("Lower right corner "); addch(ACS_LRCORNER); printw("\n");
printw("Tee pointing right "); addch(ACS_LTEE); printw("\n");
printw("Tee pointing left "); addch(ACS_RTEE); printw("\n");
printw("Tee pointing up "); addch(ACS_BTEE); printw("\n");
printw("Tee pointing down "); addch(ACS_TTEE); printw("\n");
printw("Horizontal line "); addch(ACS_HLINE); printw("\n");
printw("Vertical line "); addch(ACS_VLINE); printw("\n");
printw("Large Plus or cross over "); addch(ACS_PLUS); printw("\n");
printw("Scan Line 1 "); addch(ACS_S1); printw("\n");
printw("Scan Line 3 "); addch(ACS_S3); printw("\n");
printw("Scan Line 7 "); addch(ACS_S7); printw("\n");
printw("Scan Line 9 "); addch(ACS_S9); printw("\n");
printw("Diamond "); addch(ACS_DIAMOND); printw("\n");
printw("Checker board (stipple) "); addch(ACS_CKBOARD); printw("\n");
printw("Degree Symbol "); addch(ACS_DEGREE); printw("\n");
printw("Plus/Minus Symbol "); addch(ACS_PLMINUS); printw("\n");
printw("Bullet "); addch(ACS_BULLET); printw("\n");
printw("Arrow Pointing Left "); addch(ACS_LARROW); printw("\n");
printw("Arrow Pointing Right "); addch(ACS_RARROW); printw("\n");
printw("Arrow Pointing Down "); addch(ACS_DARROW); printw("\n");
printw("Arrow Pointing Up "); addch(ACS_UARROW); printw("\n");
printw("Board of squares "); addch(ACS_BOARD); printw("\n");
printw("Lantern Symbol "); addch(ACS_LANTERN); printw("\n");
printw("Solid Square Block "); addch(ACS_BLOCK); printw("\n");
printw("Less/Equal sign "); addch(ACS_LEQUAL); printw("\n");
printw("Greater/Equal sign "); addch(ACS_GEQUAL); printw("\n");
printw("Pi "); addch(ACS_PI); printw("\n");
printw("Not equal "); addch(ACS_NEQUAL); printw("\n");
printw("UK pound sign "); addch(ACS_STERLING); printw("\n");
refresh();
getch();
endwin();
return 0;
}

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#include <ncurses.h>
int main()
{
initscr(); /* Start curses mode */
printw("Hello World !!!"); /* Print Hello World */
refresh(); /* Print it on to the real screen */
getch(); /* Wait for user input */
endwin(); /* End curses mode */
return 0;
}

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#include <ncurses.h>
int main()
{ int ch;
initscr(); /* Start curses mode */
raw(); /* Line buffering disabled */
keypad(stdscr, TRUE); /* We get F1, F2 etc.. */
noecho(); /* Don't echo() while we do getch */
printw("Type any character to see it in bold\n");
ch = getch(); /* If raw() hadn't been called
* we have to press enter before it
* gets to the program */
if(ch == KEY_F(1)) /* Without keypad enabled this will */
printw("F1 Key pressed");/* not get to us either */
/* Without noecho() some ugly escape
* charachters might have been printed
* on screen */
else
{ printw("The pressed key is ");
attron(A_BOLD);
printw("%c", ch);
attroff(A_BOLD);
}
refresh(); /* Print it on to the real screen */
getch(); /* Wait for user input */
endwin(); /* End curses mode */
return 0;
}

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#include <ncurses.h>
int main()
{ int ch;
initscr();
cbreak();
noecho();
keypad(stdscr, TRUE);
ch = getch();
endwin();
printf("The key pressed is %d\n", ch);
}

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#include <ncurses.h>
#define WIDTH 30
#define HEIGHT 10
int startx = 0;
int starty = 0;
char *choices[] = { "Choice 1",
"Choice 2",
"Choice 3",
"Choice 4",
"Exit",
};
int n_choices = sizeof(choices) / sizeof(char *);
void print_menu(WINDOW *menu_win, int highlight);
void report_choice(int mouse_x, int mouse_y, int *p_choice);
int main()
{ int c, choice = 0;
WINDOW *menu_win;
MEVENT event;
/* Initialize curses */
initscr();
clear();
noecho();
cbreak(); //Line buffering disabled. pass on everything
/* Try to put the window in the middle of screen */
startx = (80 - WIDTH) / 2;
starty = (24 - HEIGHT) / 2;
attron(A_REVERSE);
mvprintw(23, 1, "Click on Exit to quit (Works best in a virtual console)");
refresh();
attroff(A_REVERSE);
/* Print the menu for the first time */
menu_win = newwin(HEIGHT, WIDTH, starty, startx);
print_menu(menu_win, 1);
/* Get all the mouse events */
mousemask(ALL_MOUSE_EVENTS, NULL);
while(1)
{ c = wgetch(menu_win);
switch(c)
{ case KEY_MOUSE:
if(getmouse(&event) == OK)
{ /* When the user clicks left mouse button */
if(event.bstate & BUTTON1_PRESSED)
{ report_choice(event.x + 1, event.y + 1, &choice);
if(choice == -1) //Exit chosen
goto end;
mvprintw(22, 1, "Choice made is : %d String Chosen is \"%10s\"", choice, choices[choice - 1]);
refresh();
}
}
print_menu(menu_win, choice);
break;
}
}
end:
endwin();
return 0;
}
void print_menu(WINDOW *menu_win, int highlight)
{
int x, y, i;
x = 2;
y = 2;
box(menu_win, 0, 0);
for(i = 0; i < n_choices; ++i)
{ if(highlight == i + 1)
{ wattron(menu_win, A_REVERSE);
mvwprintw(menu_win, y, x, "%s", choices[i]);
wattroff(menu_win, A_REVERSE);
}
else
mvwprintw(menu_win, y, x, "%s", choices[i]);
++y;
}
wrefresh(menu_win);
}
/* Report the choice according to mouse position */
void report_choice(int mouse_x, int mouse_y, int *p_choice)
{ int i,j, choice;
i = startx + 2;
j = starty + 3;
for(choice = 0; choice < n_choices; ++choice)
if(mouse_y == j + choice && mouse_x >= i && mouse_x <= i + strlen(choices[choice]))
{ if(choice == n_choices - 1)
*p_choice = -1;
else
*p_choice = choice + 1;
break;
}
}

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#include <ncurses.h>
typedef struct _win_border_struct {
chtype ls, rs, ts, bs,
tl, tr, bl, br;
}WIN_BORDER;
typedef struct _WIN_struct {
int startx, starty;
int height, width;
WIN_BORDER border;
}WIN;
void init_win_params(WIN *p_win);
void print_win_params(WIN *p_win);
void create_box(WIN *win, bool flag);
int main(int argc, char *argv[])
{ WIN win;
int ch;
initscr(); /* Start curses mode */
start_color(); /* Start the color functionality */
cbreak(); /* Line buffering disabled, Pass on
* everty thing to me */
keypad(stdscr, TRUE); /* I need that nifty F1 */
noecho();
init_pair(1, COLOR_CYAN, COLOR_BLACK);
/* Initialize the window parameters */
init_win_params(&win);
print_win_params(&win);
attron(COLOR_PAIR(1));
printw("Press F1 to exit");
refresh();
attroff(COLOR_PAIR(1));
create_box(&win, TRUE);
while((ch = getch()) != KEY_F(1))
{ switch(ch)
{ case KEY_LEFT:
create_box(&win, FALSE);
--win.startx;
create_box(&win, TRUE);
break;
case KEY_RIGHT:
create_box(&win, FALSE);
++win.startx;
create_box(&win, TRUE);
break;
case KEY_UP:
create_box(&win, FALSE);
--win.starty;
create_box(&win, TRUE);
break;
case KEY_DOWN:
create_box(&win, FALSE);
++win.starty;
create_box(&win, TRUE);
break;
}
}
endwin(); /* End curses mode */
return 0;
}
void init_win_params(WIN *p_win)
{
p_win->height = 3;
p_win->width = 10;
p_win->starty = (LINES - p_win->height)/2;
p_win->startx = (COLS - p_win->width)/2;
p_win->border.ls = '|';
p_win->border.rs = '|';
p_win->border.ts = '-';
p_win->border.bs = '-';
p_win->border.tl = '+';
p_win->border.tr = '+';
p_win->border.bl = '+';
p_win->border.br = '+';
}
void print_win_params(WIN *p_win)
{
#ifdef _DEBUG
mvprintw(25, 0, "%d %d %d %d", p_win->startx, p_win->starty,
p_win->width, p_win->height);
refresh();
#endif
}
void create_box(WIN *p_win, bool flag)
{ int i, j;
int x, y, w, h;
x = p_win->startx;
y = p_win->starty;
w = p_win->width;
h = p_win->height;
if(flag == TRUE)
{ mvaddch(y, x, p_win->border.tl);
mvaddch(y, x + w, p_win->border.tr);
mvaddch(y + h, x, p_win->border.bl);
mvaddch(y + h, x + w, p_win->border.br);
mvhline(y, x + 1, p_win->border.ts, w - 1);
mvhline(y + h, x + 1, p_win->border.bs, w - 1);
mvvline(y + 1, x, p_win->border.ls, h - 1);
mvvline(y + 1, x + w, p_win->border.rs, h - 1);
}
else
for(j = y; j <= y + h; ++j)
for(i = x; i <= x + w; ++i)
mvaddch(j, i, ' ');
refresh();
}

20
ncurses_programs/basics/printw_example.c Normal file
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#include <ncurses.h> /* ncurses.h includes stdio.h */
#include <string.h>
int main()
{
char mesg[]="Just a string"; /* message to be appeared on the screen */
int row,col; /* to store the number of rows and *
* the number of colums of the screen */
initscr(); /* start the curses mode */
getmaxyx(stdscr,row,col); /* get the number of rows and columns */
mvprintw(row/2,(col-strlen(mesg))/2,"%s",mesg);
/* print the message at the center of the screen */
mvprintw(row-2,0,"This screen has %d rows and %d columns\n",row,col);
printw("Try resizing your window(if possible) and then run this program again");
refresh();
getch();
endwin();
return 0;
}

20
ncurses_programs/basics/scanw_example.c Normal file
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#include <ncurses.h> /* ncurses.h includes stdio.h */
#include <string.h>
int main()
{
char mesg[]="Enter a string: "; /* message to be appeared on the screen */
char str[80];
int row,col; /* to store the number of rows and *
* the number of colums of the screen */
initscr(); /* start the curses mode */
getmaxyx(stdscr,row,col); /* get the number of rows and columns */
mvprintw(row/2,(col-strlen(mesg))/2,"%s",mesg);
/* print the message at the center of the screen */
getstr(str);
mvprintw(LINES - 2, 0, "You Entered: %s", str);
getch();
endwin();
return 0;
}

54
ncurses_programs/basics/simple_attr.c Normal file
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/* pager functionality by Joseph Spainhour" <spainhou@bellsouth.net> */
#include <ncurses.h>
#include <stdlib.h>
int main(int argc, char *argv[])
{
int ch, prev, row, col;
prev = EOF;
FILE *fp;
int y, x;
if(argc != 2)
{
printf("Usage: %s <a c file name>\n", argv[0]);
exit(1);
}
fp = fopen(argv[1], "r");
if(fp == NULL)
{
perror("Cannot open input file");
exit(1);
}
initscr(); /* Start curses mode */
getmaxyx(stdscr, row, col); /* find the boundaries of the screeen */
while((ch = fgetc(fp)) != EOF) /* read the file till we reach the end */
{
getyx(stdscr, y, x); /* get the current curser position */
if(y == (row - 1)) /* are we are at the end of the screen */
{
printw("<-Press Any Key->"); /* tell the user to press a key */
getch();
clear(); /* clear the screen */
move(0, 0); /* start at the beginning of the screen */
}
if(prev == '/' && ch == '*') /* If it is / and * then only
* switch bold on */
{
attron(A_BOLD); /* cut bold on */
getyx(stdscr, y, x); /* get the current curser position */
move(y, x - 1); /* back up one space */
printw("%c%c", '/', ch); /* The actual printing is done here */
}
else
printw("%c", ch);
refresh();
if(prev == '*' && ch == '/')
attroff(A_BOLD); /* Switch it off once we got *
* and then / */
prev = ch;
}
endwin(); /* End curses mode */
fclose(fp);
return 0;
}

40
ncurses_programs/basics/simple_color.c Normal file
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#include <ncurses.h>
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string);
int main(int argc, char *argv[])
{ initscr(); /* Start curses mode */
if(has_colors() == FALSE)
{ endwin();
printf("Your terminal does not support color\n");
exit(1);
}
start_color(); /* Start color */
init_pair(1, COLOR_RED, COLOR_BLACK);
attron(COLOR_PAIR(1));
print_in_middle(stdscr, LINES / 2, 0, 0, "Viola !!! In color ...");
attroff(COLOR_PAIR(1));
getch();
endwin();
}
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string)
{ int length, x, y;
float temp;
if(win == NULL)
win = stdscr;
getyx(win, y, x);
if(startx != 0)
x = startx;
if(starty != 0)
y = starty;
if(width == 0)
width = 80;
length = strlen(string);
temp = (width - length)/ 2;
x = startx + (int)temp;
mvwprintw(win, y, x, "%s", string);
refresh();
}

92
ncurses_programs/basics/simple_key.c Normal file
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#include <stdio.h>
#include <ncurses.h>
#define WIDTH 30
#define HEIGHT 10
int startx = 0;
int starty = 0;
char *choices[] = {
"Choice 1",
"Choice 2",
"Choice 3",
"Choice 4",
"Exit",
};
int n_choices = sizeof(choices) / sizeof(char *);
void print_menu(WINDOW *menu_win, int highlight);
int main()
{ WINDOW *menu_win;
int highlight = 1;
int choice = 0;
int c;
initscr();
clear();
noecho();
cbreak(); /* Line buffering disabled. pass on everything */
startx = (80 - WIDTH) / 2;
starty = (24 - HEIGHT) / 2;
menu_win = newwin(HEIGHT, WIDTH, starty, startx);
keypad(menu_win, TRUE);
mvprintw(0, 0, "Use arrow keys to go up and down, Press enter to select a choice");
refresh();
print_menu(menu_win, highlight);
while(1)
{ c = wgetch(menu_win);
switch(c)
{ case KEY_UP:
if(highlight == 1)
highlight = n_choices;
else
--highlight;
break;
case KEY_DOWN:
if(highlight == n_choices)
highlight = 1;
else
++highlight;
break;
case 10:
choice = highlight;
break;
default:
mvprintw(24, 0, "Charcter pressed is = %3d Hopefully it can be printed as '%c'", c, c);
refresh();
break;
}
print_menu(menu_win, highlight);
if(choice != 0) /* User did a choice come out of the infinite loop */
break;
}
mvprintw(23, 0, "You chose choice %d with choice string %s\n", choice, choices[choice - 1]);
clrtoeol();
refresh();
endwin();
return 0;
}
void print_menu(WINDOW *menu_win, int highlight)
{
int x, y, i;
x = 2;
y = 2;
box(menu_win, 0, 0);
for(i = 0; i < n_choices; ++i)
{ if(highlight == i + 1) /* High light the present choice */
{ wattron(menu_win, A_REVERSE);
mvwprintw(menu_win, y, x, "%s", choices[i]);
wattroff(menu_win, A_REVERSE);
}
else
mvwprintw(menu_win, y, x, "%s", choices[i]);
++y;
}
wrefresh(menu_win);
}

20
ncurses_programs/basics/temp_leave.c Normal file
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#include <ncurses.h>
int main()
{
initscr(); /* Start curses mode */
printw("Hello World !!!\n"); /* Print Hello World */
refresh(); /* Print it on to the real screen */
def_prog_mode(); /* Save the tty modes */
endwin(); /* End curses mode temporarily */
system("/bin/sh"); /* Do whatever you like in cooked mode */
reset_prog_mode(); /* Return to the previous tty mode*/
/* stored by def_prog_mode() */
refresh(); /* Do refresh() to restore the */
/* Screen contents */
printw("Another String\n"); /* Back to curses use the full */
refresh(); /* capabilities of curses */
endwin(); /* End curses mode */
return 0;
}

82
ncurses_programs/basics/win_border.c Normal file
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#include <ncurses.h>
WINDOW *create_newwin(int height, int width, int starty, int startx);
void destroy_win(WINDOW *local_win);
int main(int argc, char *argv[])
{ WINDOW *my_win;
int startx, starty, width, height;
int ch;
initscr(); /* Start curses mode */
cbreak(); /* Line buffering disabled, Pass on
* everty thing to me */
keypad(stdscr, TRUE); /* I need that nifty F1 */
height = 3;
width = 10;
starty = (LINES - height) / 2; /* Calculating for a center placement */
startx = (COLS - width) / 2; /* of the window */
printw("Press F1 to exit");
refresh();
my_win = create_newwin(height, width, starty, startx);
while((ch = getch()) != KEY_F(1))
{ switch(ch)
{ case KEY_LEFT:
destroy_win(my_win);
my_win = create_newwin(height, width, starty,--startx);
break;
case KEY_RIGHT:
destroy_win(my_win);
my_win = create_newwin(height, width, starty,++startx);
break;
case KEY_UP:
destroy_win(my_win);
my_win = create_newwin(height, width, --starty,startx);
break;
case KEY_DOWN:
destroy_win(my_win);
my_win = create_newwin(height, width, ++starty,startx);
break;
}
}
endwin(); /* End curses mode */
return 0;
}
WINDOW *create_newwin(int height, int width, int starty, int startx)
{ WINDOW *local_win;
local_win = newwin(height, width, starty, startx);
box(local_win, 0 , 0); /* 0, 0 gives default characters
* for the vertical and horizontal
* lines */
wrefresh(local_win); /* Show that box */
return local_win;
}
void destroy_win(WINDOW *local_win)
{
/* box(local_win, ' ', ' '); : This won't produce the desired
* result of erasing the window. It will leave it's four corners
* and so an ugly remnant of window.
*/
wborder(local_win, ' ', ' ', ' ',' ',' ',' ',' ',' ');
/* The parameters taken are
* 1. win: the window on which to operate
* 2. ls: character to be used for the left side of the window
* 3. rs: character to be used for the right side of the window
* 4. ts: character to be used for the top side of the window
* 5. bs: character to be used for the bottom side of the window
* 6. tl: character to be used for the top left corner of the window
* 7. tr: character to be used for the top right corner of the window
* 8. bl: character to be used for the bottom left corner of the window
* 9. br: character to be used for the bottom right corner of the window
*/
wrefresh(local_win);
delwin(local_win);
}

24
ncurses_programs/basics/with_chgat.c Normal file
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#include <ncurses.h>
int main(int argc, char *argv[])
{ initscr(); /* Start curses mode */
start_color(); /* Start color functionality */
init_pair(1, COLOR_CYAN, COLOR_BLACK);
printw("A Big string which i didn't care to type fully ");
mvchgat(0, 0, -1, A_BLINK, 1, NULL);
/*
* First two parameters specify the position at which to start
* Third parameter number of characters to update. -1 means till
* end of line
* Forth parameter is the normal attribute you wanted to give
* to the charcter
* Fifth is the color index. It is the index given during init_pair()
* use 0 if you didn't want color
* Sixth one is always NULL
*/
refresh();
getch();
endwin(); /* End curses mode */
return 0;
}

27
ncurses_programs/forms/Makefile Normal file
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# Makefile for JustForFun Files
# A few variables
CC=gcc
LIBS=-lform -lncurses
SRC_DIR=.
EXE_DIR=../demo/exe
EXES = \
${EXE_DIR}/form_attrib\
${EXE_DIR}/form_options\
${EXE_DIR}/form_simple\
${EXE_DIR}/form_win \
${EXE_DIR}/%: %.o
${CC} -o $@ $< ${LIBS}
%.o: ${SRC_DIR}/%.c
${CC} -o $@ -c $<
all: ${EXES}
clean:
@rm -f ${EXES}

9
ncurses_programs/forms/README Normal file
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Description of files
--------------------
forms
|
|----> form_attrib.c -- Usage of field attributes
|----> form_options.c -- Usage of field options
|----> form_simple.c -- A simple form example
|----> form_win.c -- Demo of windows associated with forms

75
ncurses_programs/forms/form_attrib.c Normal file
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#include <form.h>
int main()
{ FIELD *field[3];
FORM *my_form;
int ch;
/* Initialize curses */
initscr();
start_color();
cbreak();
noecho();
keypad(stdscr, TRUE);
/* Initialize few color pairs */
init_pair(1, COLOR_WHITE, COLOR_BLUE);
init_pair(2, COLOR_WHITE, COLOR_BLUE);
/* Initialize the fields */
field[0] = new_field(1, 10, 4, 18, 0, 0);
field[1] = new_field(1, 10, 6, 18, 0, 0);
field[2] = NULL;
/* Set field options */
set_field_fore(field[0], COLOR_PAIR(1));/* Put the field with blue background */
set_field_back(field[0], COLOR_PAIR(2));/* and white foreground (characters */
/* are printed in white */
field_opts_off(field[0], O_AUTOSKIP); /* Don't go to next field when this */
/* Field is filled up */
set_field_back(field[1], A_UNDERLINE);
field_opts_off(field[1], O_AUTOSKIP);
/* Create the form and post it */
my_form = new_form(field);
post_form(my_form);
refresh();
set_current_field(my_form, field[0]); /* Set focus to the colored field */
mvprintw(4, 10, "Value 1:");
mvprintw(6, 10, "Value 2:");
mvprintw(LINES - 2, 0, "Use UP, DOWN arrow keys to switch between fields");
refresh();
/* Loop through to get user requests */
while((ch = getch()) != KEY_F(1))
{ switch(ch)
{ case KEY_DOWN:
/* Go to next field */
form_driver(my_form, REQ_NEXT_FIELD);
/* Go to the end of the present buffer */
/* Leaves nicely at the last character */
form_driver(my_form, REQ_END_LINE);
break;
case KEY_UP:
/* Go to previous field */
form_driver(my_form, REQ_PREV_FIELD);
form_driver(my_form, REQ_END_LINE);
break;
default:
/* If this is a normal character, it gets */
/* Printed */
form_driver(my_form, ch);
break;
}
}
/* Un post form and free the memory */
unpost_form(my_form);
free_form(my_form);
free_field(field[0]);
free_field(field[1]);
endwin();
return 0;
}

76
ncurses_programs/forms/form_options.c Normal file
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#include <form.h>
#define STARTX 15
#define STARTY 4
#define WIDTH 25
#define N_FIELDS 3
int main()
{ FIELD *field[N_FIELDS];
FORM *my_form;
int ch, i;
/* Initialize curses */
initscr();
cbreak();
noecho();
keypad(stdscr, TRUE);
/* Initialize the fields */
for(i = 0; i < N_FIELDS - 1; ++i)
field[i] = new_field(1, WIDTH, STARTY + i * 2, STARTX, 0, 0);
field[N_FIELDS - 1] = NULL;
/* Set field options */
set_field_back(field[1], A_UNDERLINE); /* Print a line for the option */
field_opts_off(field[0], O_ACTIVE); /* This field is a static label */
field_opts_off(field[1], O_PUBLIC); /* This filed is like a password field*/
field_opts_off(field[1], O_AUTOSKIP); /* To avoid entering the same field */
/* after last character is entered */
/* Create the form and post it */
my_form = new_form(field);
post_form(my_form);
refresh();
set_field_just(field[0], JUSTIFY_CENTER); /* Center Justification */
set_field_buffer(field[0], 0, "This is a static Field");
/* Initialize the field */
mvprintw(STARTY, STARTX - 10, "Field 1:");
mvprintw(STARTY + 2, STARTX - 10, "Field 2:");
refresh();
/* Loop through to get user requests */
while((ch = getch()) != KEY_F(1))
{ switch(ch)
{ case KEY_DOWN:
/* Go to next field */
form_driver(my_form, REQ_NEXT_FIELD);
/* Go to the end of the present buffer */
/* Leaves nicely at the last character */
form_driver(my_form, REQ_END_LINE);
break;
case KEY_UP:
/* Go to previous field */
form_driver(my_form, REQ_PREV_FIELD);
form_driver(my_form, REQ_END_LINE);
break;
default:
/* If this is a normal character, it gets */
/* Printed */
form_driver(my_form, ch);
break;
}
}
/* Un post form and free the memory */
unpost_form(my_form);
free_form(my_form);
free_field(field[0]);
free_field(field[1]);
endwin();
return 0;
}

66
ncurses_programs/forms/form_simple.c Normal file
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#include <form.h>
int main()
{ FIELD *field[3];
FORM *my_form;
int ch;
/* Initialize curses */
initscr();
cbreak();
noecho();
keypad(stdscr, TRUE);
/* Initialize the fields */
field[0] = new_field(1, 10, 4, 18, 0, 0);
field[1] = new_field(1, 10, 6, 18, 0, 0);
field[2] = NULL;
/* Set field options */
set_field_back(field[0], A_UNDERLINE); /* Print a line for the option */
field_opts_off(field[0], O_AUTOSKIP); /* Don't go to next field when this */
/* Field is filled up */
set_field_back(field[1], A_UNDERLINE);
field_opts_off(field[1], O_AUTOSKIP);
/* Create the form and post it */
my_form = new_form(field);
post_form(my_form);
refresh();
mvprintw(4, 10, "Value 1:");
mvprintw(6, 10, "Value 2:");
refresh();
/* Loop through to get user requests */
while((ch = getch()) != KEY_F(1))
{ switch(ch)
{ case KEY_DOWN:
/* Go to next field */
form_driver(my_form, REQ_NEXT_FIELD);
/* Go to the end of the present buffer */
/* Leaves nicely at the last character */
form_driver(my_form, REQ_END_LINE);
break;
case KEY_UP:
/* Go to previous field */
form_driver(my_form, REQ_PREV_FIELD);
form_driver(my_form, REQ_END_LINE);
break;
default:
/* If this is a normal character, it gets */
/* Printed */
form_driver(my_form, ch);
break;
}
}
/* Un post form and free the memory */
unpost_form(my_form);
free_form(my_form);
free_field(field[0]);
free_field(field[1]);
endwin();
return 0;
}

112
ncurses_programs/forms/form_win.c Normal file
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#include <form.h>
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color);
int main()
{
FIELD *field[3];
FORM *my_form;
WINDOW *my_form_win;
int ch, rows, cols;
/* Initialize curses */
initscr();
start_color();
cbreak();
noecho();
keypad(stdscr, TRUE);
/* Initialize few color pairs */
init_pair(1, COLOR_RED, COLOR_BLACK);
/* Initialize the fields */
field[0] = new_field(1, 10, 6, 1, 0, 0);
field[1] = new_field(1, 10, 8, 1, 0, 0);
field[2] = NULL;
/* Set field options */
set_field_back(field[0], A_UNDERLINE);
field_opts_off(field[0], O_AUTOSKIP); /* Don't go to next field when this */
/* Field is filled up */
set_field_back(field[1], A_UNDERLINE);
field_opts_off(field[1], O_AUTOSKIP);
/* Create the form and post it */
my_form = new_form(field);
/* Calculate the area required for the form */
scale_form(my_form, &rows, &cols);
/* Create the window to be associated with the form */
my_form_win = newwin(rows + 4, cols + 4, 4, 4);
keypad(my_form_win, TRUE);
/* Set main window and sub window */
set_form_win(my_form, my_form_win);
set_form_sub(my_form, derwin(my_form_win, rows, cols, 2, 2));
/* Print a border around the main window and print a title */
box(my_form_win, 0, 0);
print_in_middle(my_form_win, 1, 0, cols + 4, "My Form", COLOR_PAIR(1));
post_form(my_form);
wrefresh(my_form_win);
mvprintw(LINES - 2, 0, "Use UP, DOWN arrow keys to switch between fields");
refresh();
/* Loop through to get user requests */
while((ch = wgetch(my_form_win)) != KEY_F(1))
{ switch(ch)
{ case KEY_DOWN:
/* Go to next field */
form_driver(my_form, REQ_NEXT_FIELD);
/* Go to the end of the present buffer */
/* Leaves nicely at the last character */
form_driver(my_form, REQ_END_LINE);
break;
case KEY_UP:
/* Go to previous field */
form_driver(my_form, REQ_PREV_FIELD);
form_driver(my_form, REQ_END_LINE);
break;
default:
/* If this is a normal character, it gets */
/* Printed */
form_driver(my_form, ch);
break;
}
}
/* Un post form and free the memory */
unpost_form(my_form);
free_form(my_form);
free_field(field[0]);
free_field(field[1]);
endwin();
return 0;
}
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color)
{ int length, x, y;
float temp;
if(win == NULL)
win = stdscr;
getyx(win, y, x);
if(startx != 0)
x = startx;
if(starty != 0)
y = starty;
if(width == 0)
width = 80;
length = strlen(string);
temp = (width - length)/ 2;
x = startx + (int)temp;
wattron(win, color);
mvwprintw(win, y, x, "%s", string);
wattroff(win, color);
refresh();
}

31
ncurses_programs/menus/Makefile Normal file
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# Makefile for JustForFun Files
# A few variables
CC=gcc
LIBS=-lmenu -lncurses
SRC_DIR=.
EXE_DIR=../demo/exe
EXES = \
${EXE_DIR}/menu_attrib\
${EXE_DIR}/menu_item_data\
${EXE_DIR}/menu_multi_column \
${EXE_DIR}/menu_scroll \
${EXE_DIR}/menu_simple \
${EXE_DIR}/menu_toggle \
${EXE_DIR}/menu_userptr \
${EXE_DIR}/menu_win
${EXE_DIR}/%: %.o
${CC} -o $@ $< ${LIBS}
%.o: ${SRC_DIR}/%.c
${CC} -o $@ -c $<
all: ${EXES}
clean:
@rm -f ${EXES}

13
ncurses_programs/menus/README Normal file
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Description of files
--------------------
menus
|
|----> menu_attrib.c -- Usage of menu attributes
|----> menu_item_data.c -- Usage of item_name() etc.. functions
|----> menu_multi_column.c -- Creates multi columnar menus
|----> menu_scroll.c -- Demonstrates scrolling capability of menus
|----> menu_simple.c -- A simple menu accessed by arrow keys
|----> menu_toggle.c -- Creates multi valued menus and explains
| -- REQ_TOGGLE_ITEM
|----> menu_userptr.c -- Usage of user pointer
|----> menu_win.c -- Demo of windows associated with menus

80
ncurses_programs/menus/menu_attrib.c Normal file
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#include <menu.h>
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
#define CTRLD 4
char *choices[] = {
"Choice 1",
"Choice 2",
"Choice 3",
"Choice 4",
"Choice 5",
"Choice 6",
"Choice 7",
"Exit",
};
int main()
{ ITEM **my_items;
int c;
MENU *my_menu;
int n_choices, i;
ITEM *cur_item;
/* Initialize curses */
initscr();
start_color();
cbreak();
noecho();
keypad(stdscr, TRUE);
init_pair(1, COLOR_RED, COLOR_BLACK);
init_pair(2, COLOR_GREEN, COLOR_BLACK);
init_pair(3, COLOR_MAGENTA, COLOR_BLACK);
/* Initialize items */
n_choices = ARRAY_SIZE(choices);
my_items = (ITEM **)calloc(n_choices + 1, sizeof(ITEM *));
for(i = 0; i < n_choices; ++i)
my_items[i] = new_item(choices[i], choices[i]);
my_items[n_choices] = (ITEM *)NULL;
item_opts_off(my_items[3], O_SELECTABLE);
item_opts_off(my_items[6], O_SELECTABLE);
/* Create menu */
my_menu = new_menu((ITEM **)my_items);
/* Set fore ground and back ground of the menu */
set_menu_fore(my_menu, COLOR_PAIR(1) | A_REVERSE);
set_menu_back(my_menu, COLOR_PAIR(2));
set_menu_grey(my_menu, COLOR_PAIR(3));
/* Post the menu */
mvprintw(LINES - 3, 0, "Press <ENTER> to see the option selected");
mvprintw(LINES - 2, 0, "Up and Down arrow keys to naviage (F1 to Exit)");
post_menu(my_menu);
refresh();
while((c = getch()) != KEY_F(1))
{ switch(c)
{ case KEY_DOWN:
menu_driver(my_menu, REQ_DOWN_ITEM);
break;
case KEY_UP:
menu_driver(my_menu, REQ_UP_ITEM);
break;
case 10: /* Enter */
move(20, 0);
clrtoeol();
mvprintw(20, 0, "Item selected is : %s",
item_name(current_item(my_menu)));
pos_menu_cursor(my_menu);
break;
}
}
unpost_menu(my_menu);
for(i = 0; i < n_choices; ++i)
free_item(my_items[i]);
free_menu(my_menu);
endwin();
}

66
ncurses_programs/menus/menu_item_data.c Normal file
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#include <curses.h>
#include <menu.h>
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
#define CTRLD 4
char *choices[] = {
"Choice 1",
"Choice 2",
"Choice 3",
"Choice 4",
"Exit",
};
int main()
{ ITEM **my_items;
int c;
MENU *my_menu;
int n_choices, i;
ITEM *cur_item;
initscr();
cbreak();
noecho();
keypad(stdscr, TRUE);
n_choices = ARRAY_SIZE(choices);
my_items = (ITEM **)calloc(n_choices + 1, sizeof(ITEM *));
for(i = 0; i < n_choices; ++i)
my_items[i] = new_item(choices[i], choices[i]);
my_items[n_choices] = (ITEM *)NULL;
my_menu = new_menu((ITEM **)my_items);
post_menu(my_menu);
refresh();
while((c = getch()) != KEY_F(1))
{ switch(c)
{ case KEY_DOWN:
menu_driver(my_menu, REQ_DOWN_ITEM);
break;
case KEY_UP:
menu_driver(my_menu, REQ_UP_ITEM);
break;
case 10: /* Enter */
cur_item = current_item(my_menu);
move(LINES - 2, 0);
clrtoeol();
mvprintw(LINES - 2, 0, "You have chosen %d item with name %s and description %s",
item_index(cur_item) + 1, item_name(cur_item),
item_description(cur_item));
refresh();
pos_menu_cursor(my_menu);
break;
}
}
free_item(my_items[0]);
free_item(my_items[1]);
free_menu(my_menu);
endwin();
}

97
ncurses_programs/menus/menu_multi_column.c Normal file
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#include <curses.h>
#include <menu.h>
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
#define CTRLD 4
char *choices[] = {
"Choice 1", "Choice 2", "Choice 3", "Choice 4", "Choice 5",
"Choice 6", "Choice 7", "Choice 8", "Choice 9", "Choice 10",
"Choice 11", "Choice 12", "Choice 13", "Choice 14", "Choice 15",
"Choice 16", "Choice 17", "Choice 18", "Choice 19", "Choice 20",
"Exit",
(char *)NULL,
};
int main()
{ ITEM **my_items;
int c;
MENU *my_menu;
WINDOW *my_menu_win;
int n_choices, i;
/* Initialize curses */
initscr();
start_color();
cbreak();
noecho();
keypad(stdscr, TRUE);
init_pair(1, COLOR_RED, COLOR_BLACK);
init_pair(2, COLOR_CYAN, COLOR_BLACK);
/* Create items */
n_choices = ARRAY_SIZE(choices);
my_items = (ITEM **)calloc(n_choices, sizeof(ITEM *));
for(i = 0; i < n_choices; ++i)
my_items[i] = new_item(choices[i], choices[i]);
/* Crate menu */
my_menu = new_menu((ITEM **)my_items);
/* Set menu option not to show the description */
menu_opts_off(my_menu, O_SHOWDESC);
/* Create the window to be associated with the menu */
my_menu_win = newwin(10, 70, 4, 4);
keypad(my_menu_win, TRUE);
/* Set main window and sub window */
set_menu_win(my_menu, my_menu_win);
set_menu_sub(my_menu, derwin(my_menu_win, 6, 68, 3, 1));
set_menu_format(my_menu, 5, 3);
set_menu_mark(my_menu, " * ");
/* Print a border around the main window and print a title */
box(my_menu_win, 0, 0);
attron(COLOR_PAIR(2));
mvprintw(LINES - 3, 0, "Use PageUp and PageDown to scroll");
mvprintw(LINES - 2, 0, "Use Arrow Keys to navigate (F1 to Exit)");
attroff(COLOR_PAIR(2));
refresh();
/* Post the menu */
post_menu(my_menu);
wrefresh(my_menu_win);
while((c = wgetch(my_menu_win)) != KEY_F(1))
{ switch(c)
{ case KEY_DOWN:
menu_driver(my_menu, REQ_DOWN_ITEM);
break;
case KEY_UP:
menu_driver(my_menu, REQ_UP_ITEM);
break;
case KEY_LEFT:
menu_driver(my_menu, REQ_LEFT_ITEM);
break;
case KEY_RIGHT:
menu_driver(my_menu, REQ_RIGHT_ITEM);
break;
case KEY_NPAGE:
menu_driver(my_menu, REQ_SCR_DPAGE);
break;
case KEY_PPAGE:
menu_driver(my_menu, REQ_SCR_UPAGE);
break;
}
wrefresh(my_menu_win);
}
/* Unpost and free all the memory taken up */
unpost_menu(my_menu);
free_menu(my_menu);
for(i = 0; i < n_choices; ++i)
free_item(my_items[i]);
endwin();
}

124
ncurses_programs/menus/menu_scroll.c Normal file
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#include <curses.h>
#include <menu.h>
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
#define CTRLD 4
char *choices[] = {
"Choice 1",
"Choice 2",
"Choice 3",
"Choice 4",
"Choice 5",
"Choice 6",
"Choice 7",
"Choice 8",
"Choice 9",
"Choice 10",
"Exit",
(char *)NULL,
};
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color);
int main()
{ ITEM **my_items;
int c;
MENU *my_menu;
WINDOW *my_menu_win;
int n_choices, i;
/* Initialize curses */
initscr();
start_color();
cbreak();
noecho();
keypad(stdscr, TRUE);
init_pair(1, COLOR_RED, COLOR_BLACK);
init_pair(2, COLOR_CYAN, COLOR_BLACK);
/* Create items */
n_choices = ARRAY_SIZE(choices);
my_items = (ITEM **)calloc(n_choices, sizeof(ITEM *));
for(i = 0; i < n_choices; ++i)
my_items[i] = new_item(choices[i], choices[i]);
/* Crate menu */
my_menu = new_menu((ITEM **)my_items);
/* Create the window to be associated with the menu */
my_menu_win = newwin(10, 40, 4, 4);
keypad(my_menu_win, TRUE);
/* Set main window and sub window */
set_menu_win(my_menu, my_menu_win);
set_menu_sub(my_menu, derwin(my_menu_win, 6, 38, 3, 1));
set_menu_format(my_menu, 5, 1);
/* Set menu mark to the string " * " */
set_menu_mark(my_menu, " * ");
/* Print a border around the main window and print a title */
box(my_menu_win, 0, 0);
print_in_middle(my_menu_win, 1, 0, 40, "My Menu", COLOR_PAIR(1));
mvwaddch(my_menu_win, 2, 0, ACS_LTEE);
mvwhline(my_menu_win, 2, 1, ACS_HLINE, 38);
mvwaddch(my_menu_win, 2, 39, ACS_RTEE);
/* Post the menu */
post_menu(my_menu);
wrefresh(my_menu_win);
attron(COLOR_PAIR(2));
mvprintw(LINES - 2, 0, "Use PageUp and PageDown to scoll down or up a page of items");
mvprintw(LINES - 1, 0, "Arrow Keys to navigate (F1 to Exit)");
attroff(COLOR_PAIR(2));
refresh();
while((c = wgetch(my_menu_win)) != KEY_F(1))
{ switch(c)
{ case KEY_DOWN:
menu_driver(my_menu, REQ_DOWN_ITEM);
break;
case KEY_UP:
menu_driver(my_menu, REQ_UP_ITEM);
break;
case KEY_NPAGE:
menu_driver(my_menu, REQ_SCR_DPAGE);
break;
case KEY_PPAGE:
menu_driver(my_menu, REQ_SCR_UPAGE);
break;
}
wrefresh(my_menu_win);
}
/* Unpost and free all the memory taken up */
unpost_menu(my_menu);
free_menu(my_menu);
for(i = 0; i < n_choices; ++i)
free_item(my_items[i]);
endwin();
}
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color)
{ int length, x, y;
float temp;
if(win == NULL)
win = stdscr;
getyx(win, y, x);
if(startx != 0)
x = startx;
if(starty != 0)
y = starty;
if(width == 0)
width = 80;
length = strlen(string);
temp = (width - length)/ 2;
x = startx + (int)temp;
wattron(win, color);
mvwprintw(win, y, x, "%s", string);
wattroff(win, color);
refresh();
}

56
ncurses_programs/menus/menu_simple.c Normal file
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#include <curses.h>
#include <menu.h>
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
#define CTRLD 4
char *choices[] = {
"Choice 1",
"Choice 2",
"Choice 3",
"Choice 4",
"Exit",
};
int main()
{ ITEM **my_items;
int c;
MENU *my_menu;
int n_choices, i;
ITEM *cur_item;
initscr();
cbreak();
noecho();
keypad(stdscr, TRUE);
n_choices = ARRAY_SIZE(choices);
my_items = (ITEM **)calloc(n_choices + 1, sizeof(ITEM *));
for(i = 0; i < n_choices; ++i)
my_items[i] = new_item(choices[i], choices[i]);
my_items[n_choices] = (ITEM *)NULL;
my_menu = new_menu((ITEM **)my_items);
mvprintw(LINES - 2, 0, "F1 to Exit");
post_menu(my_menu);
refresh();
while((c = getch()) != KEY_F(1))
{ switch(c)
{ case KEY_DOWN:
menu_driver(my_menu, REQ_DOWN_ITEM);
break;
case KEY_UP:
menu_driver(my_menu, REQ_UP_ITEM);
break;
}
}
free_item(my_items[0]);
free_item(my_items[1]);
free_menu(my_menu);
endwin();
}

84
ncurses_programs/menus/menu_toggle.c Normal file
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#include <curses.h>
#include <menu.h>
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
#define CTRLD 4
char *choices[] = {
"Choice 1",
"Choice 2",
"Choice 3",
"Choice 4",
"Choice 5",
"Choice 6",
"Choice 7",
"Exit",
};
int main()
{ ITEM **my_items;
int c;
MENU *my_menu;
int n_choices, i;
ITEM *cur_item;
/* Initialize curses */
initscr();
cbreak();
noecho();
keypad(stdscr, TRUE);
/* Initialize items */
n_choices = ARRAY_SIZE(choices);
my_items = (ITEM **)calloc(n_choices + 1, sizeof(ITEM *));
for(i = 0; i < n_choices; ++i)
my_items[i] = new_item(choices[i], choices[i]);
my_items[n_choices] = (ITEM *)NULL;
my_menu = new_menu((ITEM **)my_items);
/* Make the menu multi valued */
menu_opts_off(my_menu, O_ONEVALUE);
mvprintw(LINES - 3, 0, "Use <SPACE> to select or unselect an item.");
mvprintw(LINES - 2, 0, "<ENTER> to see presently selected items(F1 to Exit)");
post_menu(my_menu);
refresh();
while((c = getch()) != KEY_F(1))
{ switch(c)
{ case KEY_DOWN:
menu_driver(my_menu, REQ_DOWN_ITEM);
break;
case KEY_UP:
menu_driver(my_menu, REQ_UP_ITEM);
break;
case ' ':
menu_driver(my_menu, REQ_TOGGLE_ITEM);
break;
case 10: /* Enter */
{ char temp[200];
ITEM **items;
items = menu_items(my_menu);
temp[0] = '\0';
for(i = 0; i < item_count(my_menu); ++i)
if(item_value(items[i]) == TRUE)
{ strcat(temp, item_name(items[i]));
strcat(temp, " ");
}
move(20, 0);
clrtoeol();
mvprintw(20, 0, temp);
refresh();
}
break;
}
}
free_item(my_items[0]);
free_item(my_items[1]);
free_menu(my_menu);
endwin();
}

87
ncurses_programs/menus/menu_userptr.c Normal file
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#include <curses.h>
#include <menu.h>
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
#define CTRLD 4
char *choices[] = {
"Choice 1",
"Choice 2",
"Choice 3",
"Choice 4",
"Choice 5",
"Choice 6",
"Choice 7",
"Exit",
};
void func(char *name);
int main()
{ ITEM **my_items;
int c;
MENU *my_menu;
int n_choices, i;
ITEM *cur_item;
/* Initialize curses */
initscr();
start_color();
cbreak();
noecho();
keypad(stdscr, TRUE);
init_pair(1, COLOR_RED, COLOR_BLACK);
init_pair(2, COLOR_GREEN, COLOR_BLACK);
init_pair(3, COLOR_MAGENTA, COLOR_BLACK);
/* Initialize items */
n_choices = ARRAY_SIZE(choices);
my_items = (ITEM **)calloc(n_choices + 1, sizeof(ITEM *));
for(i = 0; i < n_choices; ++i)
{ my_items[i] = new_item(choices[i], choices[i]);
/* Set the user pointer */
set_item_userptr(my_items[i], func);
}
my_items[n_choices] = (ITEM *)NULL;
/* Create menu */
my_menu = new_menu((ITEM **)my_items);
/* Post the menu */
mvprintw(LINES - 3, 0, "Press <ENTER> to see the option selected");
mvprintw(LINES - 2, 0, "Up and Down arrow keys to naviage (F1 to Exit)");
post_menu(my_menu);
refresh();
while((c = getch()) != KEY_F(1))
{ switch(c)
{ case KEY_DOWN:
menu_driver(my_menu, REQ_DOWN_ITEM);
break;
case KEY_UP:
menu_driver(my_menu, REQ_UP_ITEM);
break;
case 10: /* Enter */
{ ITEM *cur;
void (*p)(char *);
cur = current_item(my_menu);
p = item_userptr(cur);
p((char *)item_name(cur));
pos_menu_cursor(my_menu);
break;
}
break;
}
}
unpost_menu(my_menu);
for(i = 0; i < n_choices; ++i)
free_item(my_items[i]);
free_menu(my_menu);
endwin();
}
void func(char *name)
{ move(20, 0);
clrtoeol();
mvprintw(20, 0, "Item selected is : %s", name);
}

105
ncurses_programs/menus/menu_win.c Normal file
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#include <menu.h>
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
#define CTRLD 4
char *choices[] = {
"Choice 1",
"Choice 2",
"Choice 3",
"Choice 4",
"Exit",
(char *)NULL,
};
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color);
int main()
{ ITEM **my_items;
int c;
MENU *my_menu;
WINDOW *my_menu_win;
int n_choices, i;
/* Initialize curses */
initscr();
start_color();
cbreak();
noecho();
keypad(stdscr, TRUE);
init_pair(1, COLOR_RED, COLOR_BLACK);
/* Create items */
n_choices = ARRAY_SIZE(choices);
my_items = (ITEM **)calloc(n_choices, sizeof(ITEM *));
for(i = 0; i < n_choices; ++i)
my_items[i] = new_item(choices[i], choices[i]);
/* Crate menu */
my_menu = new_menu((ITEM **)my_items);
/* Create the window to be associated with the menu */
my_menu_win = newwin(10, 40, 4, 4);
keypad(my_menu_win, TRUE);
/* Set main window and sub window */
set_menu_win(my_menu, my_menu_win);
set_menu_sub(my_menu, derwin(my_menu_win, 6, 38, 3, 1));
/* Set menu mark to the string " * " */
set_menu_mark(my_menu, " * ");
/* Print a border around the main window and print a title */
box(my_menu_win, 0, 0);
print_in_middle(my_menu_win, 1, 0, 40, "My Menu", COLOR_PAIR(1));
mvwaddch(my_menu_win, 2, 0, ACS_LTEE);
mvwhline(my_menu_win, 2, 1, ACS_HLINE, 38);
mvwaddch(my_menu_win, 2, 39, ACS_RTEE);
mvprintw(LINES - 2, 0, "F1 to exit");
refresh();
/* Post the menu */
post_menu(my_menu);
wrefresh(my_menu_win);
while((c = wgetch(my_menu_win)) != KEY_F(1))
{ switch(c)
{ case KEY_DOWN:
menu_driver(my_menu, REQ_DOWN_ITEM);
break;
case KEY_UP:
menu_driver(my_menu, REQ_UP_ITEM);
break;
}
wrefresh(my_menu_win);
}
/* Unpost and free all the memory taken up */
unpost_menu(my_menu);
free_menu(my_menu);
for(i = 0; i < n_choices; ++i)
free_item(my_items[i]);
endwin();
}
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color)
{ int length, x, y;
float temp;
if(win == NULL)
win = stdscr;
getyx(win, y, x);
if(startx != 0)
x = startx;
if(starty != 0)
y = starty;
if(width == 0)
width = 80;
length = strlen(string);
temp = (width - length)/ 2;
x = startx + (int)temp;
wattron(win, color);
mvwprintw(win, y, x, "%s", string);
wattroff(win, color);
refresh();
}

27
ncurses_programs/panels/Makefile Normal file
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# Makefile for JustForFun Files
# A few variables
CC=gcc
LIBS=-lpanel -lncurses
SRC_DIR=.
EXE_DIR=../demo/exe
EXES = \
${EXE_DIR}/panel_browse \
${EXE_DIR}/panel_hide \
${EXE_DIR}/panel_resize \
${EXE_DIR}/panel_simple
${EXE_DIR}/%: %.o
${CC} -o $@ $< ${LIBS}
%.o: ${SRC_DIR}/%.c
${CC} -o $@ -c $<
all: ${EXES}
clean:
@rm -f ${EXES}

8
ncurses_programs/panels/README Normal file
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Description of files
--------------------
panels
|
|----> panel_browse.c -- Panel browsing through tab. Usage of user pointer
|----> panel_hide.c -- Hiding and Un hiding of panels
|----> panel_resize.c -- Moving and resizing of panels
|----> panel_simple.c -- A simple panel example

117
ncurses_programs/panels/panel_browse.c Normal file
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#include <panel.h>
#define NLINES 10
#define NCOLS 40
void init_wins(WINDOW **wins, int n);
void win_show(WINDOW *win, char *label, int label_color);
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color);
int main()
{ WINDOW *my_wins[3];
PANEL *my_panels[3];
PANEL *top;
int ch;
/* Initialize curses */
initscr();
start_color();
cbreak();
noecho();
keypad(stdscr, TRUE);
/* Initialize all the colors */
init_pair(1, COLOR_RED, COLOR_BLACK);
init_pair(2, COLOR_GREEN, COLOR_BLACK);
init_pair(3, COLOR_BLUE, COLOR_BLACK);
init_pair(4, COLOR_CYAN, COLOR_BLACK);
init_wins(my_wins, 3);
/* Attach a panel to each window */ /* Order is bottom up */
my_panels[0] = new_panel(my_wins[0]); /* Push 0, order: stdscr-0 */
my_panels[1] = new_panel(my_wins[1]); /* Push 1, order: stdscr-0-1 */
my_panels[2] = new_panel(my_wins[2]); /* Push 2, order: stdscr-0-1-2 */
/* Set up the user pointers to the next panel */
set_panel_userptr(my_panels[0], my_panels[1]);
set_panel_userptr(my_panels[1], my_panels[2]);
set_panel_userptr(my_panels[2], my_panels[0]);
/* Update the stacking order. 2nd panel will be on top */
update_panels();
/* Show it on the screen */
attron(COLOR_PAIR(4));
mvprintw(LINES - 2, 0, "Use tab to browse through the windows (F1 to Exit)");
attroff(COLOR_PAIR(4));
doupdate();
top = my_panels[2];
while((ch = getch()) != KEY_F(1))
{ switch(ch)
{ case 9:
top = (PANEL *)panel_userptr(top);
top_panel(top);
break;
}
update_panels();
doupdate();
}
endwin();
return 0;
}
/* Put all the windows */
void init_wins(WINDOW **wins, int n)
{ int x, y, i;
char label[80];
y = 2;
x = 10;
for(i = 0; i < n; ++i)
{ wins[i] = newwin(NLINES, NCOLS, y, x);
sprintf(label, "Window Number %d", i + 1);
win_show(wins[i], label, i + 1);
y += 3;
x += 7;
}
}
/* Show the window with a border and a label */
void win_show(WINDOW *win, char *label, int label_color)
{ int startx, starty, height, width;
getbegyx(win, starty, startx);
getmaxyx(win, height, width);
box(win, 0, 0);
mvwaddch(win, 2, 0, ACS_LTEE);
mvwhline(win, 2, 1, ACS_HLINE, width - 2);
mvwaddch(win, 2, width - 1, ACS_RTEE);
print_in_middle(win, 1, 0, width, label, COLOR_PAIR(label_color));
}
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color)
{ int length, x, y;
float temp;
if(win == NULL)
win = stdscr;
getyx(win, y, x);
if(startx != 0)
x = startx;
if(starty != 0)
y = starty;
if(width == 0)
width = 80;
length = strlen(string);
temp = (width - length)/ 2;
x = startx + (int)temp;
wattron(win, color);
mvwprintw(win, y, x, "%s", string);
wattroff(win, color);
refresh();
}

156
ncurses_programs/panels/panel_hide.c Normal file
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#include <panel.h>
typedef struct _PANEL_DATA {
int hide; /* TRUE if panel is hidden */
}PANEL_DATA;
#define NLINES 10
#define NCOLS 40
void init_wins(WINDOW **wins, int n);
void win_show(WINDOW *win, char *label, int label_color);
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color);
int main()
{ WINDOW *my_wins[3];
PANEL *my_panels[3];
PANEL_DATA panel_datas[3];
PANEL_DATA *temp;
int ch;
/* Initialize curses */
initscr();
start_color();
cbreak();
noecho();
keypad(stdscr, TRUE);
/* Initialize all the colors */
init_pair(1, COLOR_RED, COLOR_BLACK);
init_pair(2, COLOR_GREEN, COLOR_BLACK);
init_pair(3, COLOR_BLUE, COLOR_BLACK);
init_pair(4, COLOR_CYAN, COLOR_BLACK);
init_wins(my_wins, 3);
/* Attach a panel to each window */ /* Order is bottom up */
my_panels[0] = new_panel(my_wins[0]); /* Push 0, order: stdscr-0 */
my_panels[1] = new_panel(my_wins[1]); /* Push 1, order: stdscr-0-1 */
my_panels[2] = new_panel(my_wins[2]); /* Push 2, order: stdscr-0-1-2 */
/* Initialize panel datas saying that nothing is hidden */
panel_datas[0].hide = FALSE;
panel_datas[1].hide = FALSE;
panel_datas[2].hide = FALSE;
set_panel_userptr(my_panels[0], &panel_datas[0]);
set_panel_userptr(my_panels[1], &panel_datas[1]);
set_panel_userptr(my_panels[2], &panel_datas[2]);
/* Update the stacking order. 2nd panel will be on top */
update_panels();
/* Show it on the screen */
attron(COLOR_PAIR(4));
mvprintw(LINES - 3, 0, "Show or Hide a window with 'a'(first window) 'b'(Second Window) 'c'(Third Window)");
mvprintw(LINES - 2, 0, "F1 to Exit");
attroff(COLOR_PAIR(4));
doupdate();
while((ch = getch()) != KEY_F(1))
{ switch(ch)
{ case 'a':
temp = (PANEL_DATA *)panel_userptr(my_panels[0]);
if(temp->hide == FALSE)
{ hide_panel(my_panels[0]);
temp->hide = TRUE;
}
else
{ show_panel(my_panels[0]);
temp->hide = FALSE;
}
break;
case 'b':
temp = (PANEL_DATA *)panel_userptr(my_panels[1]);
if(temp->hide == FALSE)
{ hide_panel(my_panels[1]);
temp->hide = TRUE;
}
else
{ show_panel(my_panels[1]);
temp->hide = FALSE;
}
break;
case 'c':
temp = (PANEL_DATA *)panel_userptr(my_panels[2]);
if(temp->hide == FALSE)
{ hide_panel(my_panels[2]);
temp->hide = TRUE;
}
else
{ show_panel(my_panels[2]);
temp->hide = FALSE;
}
break;
}
update_panels();
doupdate();
}
endwin();
return 0;
}
/* Put all the windows */
void init_wins(WINDOW **wins, int n)
{ int x, y, i;
char label[80];
y = 2;
x = 10;
for(i = 0; i < n; ++i)
{ wins[i] = newwin(NLINES, NCOLS, y, x);
sprintf(label, "Window Number %d", i + 1);
win_show(wins[i], label, i + 1);
y += 3;
x += 7;
}
}
/* Show the window with a border and a label */
void win_show(WINDOW *win, char *label, int label_color)
{ int startx, starty, height, width;
getbegyx(win, starty, startx);
getmaxyx(win, height, width);
box(win, 0, 0);
mvwaddch(win, 2, 0, ACS_LTEE);
mvwhline(win, 2, 1, ACS_HLINE, width - 2);
mvwaddch(win, 2, width - 1, ACS_RTEE);
print_in_middle(win, 1, 0, width, label, COLOR_PAIR(label_color));
}
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color)
{ int length, x, y;
float temp;
if(win == NULL)
win = stdscr;
getyx(win, y, x);
if(startx != 0)
x = startx;
if(starty != 0)
y = starty;
if(width == 0)
width = 80;
length = strlen(string);
temp = (width - length)/ 2;
x = startx + (int)temp;
wattron(win, color);
mvwprintw(win, y, x, "%s", string);
wattroff(win, color);
refresh();
}

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ncurses_programs/panels/panel_resize.c Normal file
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#include <panel.h>
typedef struct _PANEL_DATA {
int x, y, w, h;
char label[80];
int label_color;
PANEL *next;
}PANEL_DATA;
#define NLINES 10
#define NCOLS 40
void init_wins(WINDOW **wins, int n);
void win_show(WINDOW *win, char *label, int label_color);
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color);
void set_user_ptrs(PANEL **panels, int n);
int main()
{ WINDOW *my_wins[3];
PANEL *my_panels[3];
PANEL_DATA *top;
PANEL *stack_top;
WINDOW *temp_win, *old_win;
int ch;
int newx, newy, neww, newh;
int size = FALSE, move = FALSE;
/* Initialize curses */
initscr();
start_color();
cbreak();
noecho();
keypad(stdscr, TRUE);
/* Initialize all the colors */
init_pair(1, COLOR_RED, COLOR_BLACK);
init_pair(2, COLOR_GREEN, COLOR_BLACK);
init_pair(3, COLOR_BLUE, COLOR_BLACK);
init_pair(4, COLOR_CYAN, COLOR_BLACK);
init_wins(my_wins, 3);
/* Attach a panel to each window */ /* Order is bottom up */
my_panels[0] = new_panel(my_wins[0]); /* Push 0, order: stdscr-0 */
my_panels[1] = new_panel(my_wins[1]); /* Push 1, order: stdscr-0-1 */
my_panels[2] = new_panel(my_wins[2]); /* Push 2, order: stdscr-0-1-2 */
set_user_ptrs(my_panels, 3);
/* Update the stacking order. 2nd panel will be on top */
update_panels();
/* Show it on the screen */
attron(COLOR_PAIR(4));
mvprintw(LINES - 3, 0, "Use 'm' for moving, 'r' for resizing");
mvprintw(LINES - 2, 0, "Use tab to browse through the windows (F1 to Exit)");
attroff(COLOR_PAIR(4));
doupdate();
stack_top = my_panels[2];
top = (PANEL_DATA *)panel_userptr(stack_top);
newx = top->x;
newy = top->y;
neww = top->w;
newh = top->h;
while((ch = getch()) != KEY_F(1))
{ switch(ch)
{ case 9: /* Tab */
top = (PANEL_DATA *)panel_userptr(stack_top);
top_panel(top->next);
stack_top = top->next;
top = (PANEL_DATA *)panel_userptr(stack_top);
newx = top->x;
newy = top->y;
neww = top->w;
newh = top->h;
break;
case 'r': /* Re-Size*/
size = TRUE;
attron(COLOR_PAIR(4));
mvprintw(LINES - 4, 0, "Entered Resizing :Use Arrow Keys to resize and press <ENTER> to end resizing");
refresh();
attroff(COLOR_PAIR(4));
break;
case 'm': /* Move */
attron(COLOR_PAIR(4));
mvprintw(LINES - 4, 0, "Entered Moving: Use Arrow Keys to Move and press <ENTER> to end moving");
refresh();
attroff(COLOR_PAIR(4));
move = TRUE;
break;
case KEY_LEFT:
if(size == TRUE)
{ --newx;
++neww;
}
if(move == TRUE)
--newx;
break;
case KEY_RIGHT:
if(size == TRUE)
{ ++newx;
--neww;
}
if(move == TRUE)
++newx;
break;
case KEY_UP:
if(size == TRUE)
{ --newy;
++newh;
}
if(move == TRUE)
--newy;
break;
case KEY_DOWN:
if(size == TRUE)
{ ++newy;
--newh;
}
if(move == TRUE)
++newy;
break;
case 10: /* Enter */
move(LINES - 4, 0);
clrtoeol();
refresh();
if(size == TRUE)
{ old_win = panel_window(stack_top);
temp_win = newwin(newh, neww, newy, newx);
replace_panel(stack_top, temp_win);
win_show(temp_win, top->label, top->label_color);
delwin(old_win);
size = FALSE;
}
if(move == TRUE)
{ move_panel(stack_top, newy, newx);
move = FALSE;
}
break;
}
attron(COLOR_PAIR(4));
mvprintw(LINES - 3, 0, "Use 'm' for moving, 'r' for resizing");
mvprintw(LINES - 2, 0, "Use tab to browse through the windows (F1 to Exit)");
attroff(COLOR_PAIR(4));
refresh();
update_panels();
doupdate();
}
endwin();
return 0;
}
/* Put all the windows */
void init_wins(WINDOW **wins, int n)
{ int x, y, i;
char label[80];
y = 2;
x = 10;
for(i = 0; i < n; ++i)
{ wins[i] = newwin(NLINES, NCOLS, y, x);
sprintf(label, "Window Number %d", i + 1);
win_show(wins[i], label, i + 1);
y += 3;
x += 7;
}
}
/* Set the PANEL_DATA structures for individual panels */
void set_user_ptrs(PANEL **panels, int n)
{ PANEL_DATA *ptrs;
WINDOW *win;
int x, y, w, h, i;
char temp[80];
ptrs = (PANEL_DATA *)calloc(n, sizeof(PANEL_DATA));
for(i = 0;i < n; ++i)
{ win = panel_window(panels[i]);
getbegyx(win, y, x);
getmaxyx(win, h, w);
ptrs[i].x = x;
ptrs[i].y = y;
ptrs[i].w = w;
ptrs[i].h = h;
sprintf(temp, "Window Number %d", i + 1);
strcpy(ptrs[i].label, temp);
ptrs[i].label_color = i + 1;
if(i + 1 == n)
ptrs[i].next = panels[0];
else
ptrs[i].next = panels[i + 1];
set_panel_userptr(panels[i], &ptrs[i]);
}
}
/* Show the window with a border and a label */
void win_show(WINDOW *win, char *label, int label_color)
{ int startx, starty, height, width;
getbegyx(win, starty, startx);
getmaxyx(win, height, width);
box(win, 0, 0);
mvwaddch(win, 2, 0, ACS_LTEE);
mvwhline(win, 2, 1, ACS_HLINE, width - 2);
mvwaddch(win, 2, width - 1, ACS_RTEE);
print_in_middle(win, 1, 0, width, label, COLOR_PAIR(label_color));
}
void print_in_middle(WINDOW *win, int starty, int startx, int width, char *string, chtype color)
{ int length, x, y;
float temp;
if(win == NULL)
win = stdscr;
getyx(win, y, x);
if(startx != 0)
x = startx;
if(starty != 0)
y = starty;
if(width == 0)
width = 80;
length = strlen(string);
temp = (width - length)/ 2;
x = startx + (int)temp;
wattron(win, color);
mvwprintw(win, y, x, "%s", string);
wattroff(win, color);
refresh();
}

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ncurses_programs/panels/panel_simple.c Normal file
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#include <panel.h>
int main()
{ WINDOW *my_wins[3];
PANEL *my_panels[3];
int lines = 10, cols = 40, y = 2, x = 4, i;
initscr();
cbreak();
noecho();
/* Create windows for the panels */
my_wins[0] = newwin(lines, cols, y, x);
my_wins[1] = newwin(lines, cols, y + 1, x + 5);
my_wins[2] = newwin(lines, cols, y + 2, x + 10);
/*
* Create borders around the windows so that you can see the effect
* of panels
*/
for(i = 0; i < 3; ++i)
box(my_wins[i], 0, 0);
/* Attach a panel to each window */ /* Order is bottom up */
my_panels[0] = new_panel(my_wins[0]); /* Push 0, order: stdscr-0 */
my_panels[1] = new_panel(my_wins[1]); /* Push 1, order: stdscr-0-1 */
my_panels[2] = new_panel(my_wins[2]); /* Push 2, order: stdscr-0-1-2 */
/* Update the stacking order. 2nd panel will be on top */
update_panels();
/* Show it on the screen */
doupdate();
getch();
endwin();
}

17
ncurses_programs/perl/01.pl Executable file
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#!/usr/bin/perl
#
# Copyright (C) 2003 by Virtusa Corporation
# http://www.virtusa.com
#
# Anuradha Ratnaweera
# http://www.linux.lk/~anuradha/
#
use Curses;
initscr();
printw("Hello world!");
refresh();
getch();
endwin();

33
ncurses_programs/perl/02.pl Executable file
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#!/usr/bin/perl
#
# Copyright (C) 2003 by Virtusa Corporation
# http://www.virtusa.com
#
# Anuradha Ratnaweera
# http://www.linux.lk/~anuradha/
#
use Curses;
initscr();
raw();
keypad(1);
noecho();
printw("Type any character to see it in bold\n");
$ch = getch();
if ($ch == KEY_F(1)) {
printw("F1 Key pressed");
}
else {
printw("The pressed key is ");
attron(A_BOLD);
printw($ch);
attroff(A_BOLD);
}
refresh();
getch();
endwin();

23
ncurses_programs/perl/03.pl Executable file
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#!/usr/bin/perl
#
# Copyright (C) 2003 by Virtusa Corporation
# http://www.virtusa.com
#
# Anuradha Ratnaweera
# http://www.linux.lk/~anuradha/
#
# We use addstr() instead of printw()
use Curses;
$mesg = "Just a string";
initscr();
getmaxyx($row, $col);
addstr($row / 2, ($col - length($mesg)) / 2, $mesg);
addstr($row - 2, 0, "This screen has $row rows and $col columns\n");
refresh();
getch();
endwin();

23
ncurses_programs/perl/04.pl Executable file
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#!/usr/bin/perl
#
# Copyright (C) 2003 by Virtusa Corporation
# http://www.virtusa.com
#
# Anuradha Ratnaweera
# http://www.linux.lk/~anuradha/
#
# We use addstr() instead of printw()
use Curses;
$mesg = "Enter a string: ";
initscr();
getmaxyx($row, $col);
addstr($row / 2, ($col - length($mesg)) / 2, $mesg);
getstr($str);
addstr($LINES - 2, 0, "You Entered: $str");
getch();
endwin();

32
ncurses_programs/perl/05.pl Executable file
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#!/usr/bin/perl
#
# Copyright (C) 2003 by Virtusa Corporation
# http://www.virtusa.com
#
# Anuradha Ratnaweera
# http://www.linux.lk/~anuradha/
#
# We first read all the input into an array and join
# it to a single string with newlines.
use Curses;
initscr();
@lines = <>;
$lines = join "", @lines;
while ($lines =~ /\G(.*?)(\/\*.*?\*\/)?/gs) {
addstr($1);
if ($2) {
attron(A_BOLD);
addstr($2);
attroff(A_BOLD);
}
}
refresh();
getch();
endwin();

22
ncurses_programs/perl/06.pl Executable file
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#!/usr/bin/perl
#
# Copyright (C) 2003 by Virtusa Corporation
# http://www.virtusa.com
#
# Anuradha Ratnaweera
# http://www.linux.lk/~anuradha/
#
use Curses;
initscr();
start_color();
init_pair(1, COLOR_CYAN, COLOR_BLACK);
printw("A Big string which i didn't care to type fully ");
chgat(0, 0, -1, A_BLINK, 1, NULL);
refresh();
getch();
endwin();

58
ncurses_programs/perl/07.pl Executable file
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#!/usr/bin/perl
#
# Copyright (C) 2003 by Virtusa Corporation
# http://www.virtusa.com
#
# Anuradha Ratnaweera
# http://www.linux.lk/~anuradha/
#
use Curses;
initscr();
cbreak();
keypad(1);
$height = 3;
$width = 10;
$starty = ($LINES - $height) / 2;
$startx = ($COLS - $width) / 2;
printw("Press F1 to exit");
refresh();
$my_win = create_newwin($height, $width, $starty, $startx);
while (($ch = getch()) != KEY_F(1)) {
if ($ch == KEY_LEFT) {
destroy_win($my_win);
$my_win = create_newwin($height, $width, $starty, --$startx);
}
elsif ($ch == KEY_RIGHT) {
destroy_win($my_win);
$my_win = create_newwin($height, $width, $starty, ++$startx);
}
elsif ($ch == KEY_UP) {
destroy_win($my_win);
$my_win = create_newwin($height, $width, --$starty, $startx);
}
elsif ($ch == KEY_DOWN) {
destroy_win($my_win);
$my_win = create_newwin($height, $width, ++$starty, $startx);
}
}
endwin();
sub create_newwin {
$local_win = newwin(shift, shift, shift, shift);
box($local_win, 0, 0);
refresh($local_win);
return $local_win;
}
sub destroy_win {
$local_win = shift;
border($local_win, ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ');
refresh($local_win);
delwin($local_win);
}

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ncurses_programs/perl/08.pl Executable file
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#!/usr/bin/perl
#
# Copyright (C) 2003 by Virtusa Corporation
# http://www.virtusa.com
#
# Anuradha Ratnaweera
# http://www.linux.lk/~anuradha/
#
# We use %win hash to store window parameters
use Curses;
initscr();
start_color();
cbreak();
keypad(1);
noecho();
init_pair(1, COLOR_CYAN, COLOR_BLACK);
%win = ();
init_win_params(\%win);
print_win_params(\%win);
attron(COLOR_PAIR(1));
printw("Press F1 to exit");
refresh();
attroff(COLOR_PAIR(1));
create_box(\%win, 1);
while (($ch = getch()) != KEY_F(1)) {
if ($ch == KEY_LEFT) {
create_box(\%win, 0);
$win{'startx'}--;
create_box(\%win, 1);
}
elsif ($ch == KEY_RIGHT) {
create_box(\%win, 0);
$win{'startx'}++;
create_box(\%win, 1);
}
elsif ($ch == KEY_UP) {
create_box(\%win, 0);
$win{'starty'}--;
create_box(\%win, 1);
}
elsif ($ch == KEY_DOWN) {
create_box(\%win, 0);
$win{'starty'}++;
create_box(\%win, 1);
}
}
endwin();
sub init_win_params {
$p_win = shift;
$$p_win{'height'} = 3;
$$p_win{'width'} = 10;
$$p_win{'starty'} = ($LINES - $p_win{'height'}) / 2;
$$p_win{'startx'} = ($COLS - $p_win{'width'}) / 2;
$$p_win{'ls'} = '|';
$$p_win{'rs'} = '|';
$$p_win{'ts'} = '-';
$$p_win{'bs'} = '-';
$$p_win{'tl'} = '+';
$$p_win{'tr'} = '+';
$$p_win{'bl'} = '+';
$$p_win{'br'} = '+';
}
sub print_win_params {
if ($_DEBUG) {
$p_win = shift;
addstr(25, 0,
"$$p_win{startx} $$p_win{starty} $$p_win{width} $$p_win{height}");
refresh();
}
}
sub create_box {
$p_win = shift;
$bool = shift;
$x = $$p_win{'startx'};
$y = $$p_win{'starty'};
$w = $$p_win{'width'};
$h = $$p_win{'height'};
if ($bool) {
addch($y, $x, $$p_win{'tl'});
addch($y, $x + $w, $$p_win{'tr'});
addch($y + $h, $x, $$p_win{'bl'});
addch($y + $h, $x + $w, $$p_win{'br'});
hline($y, $x + 1, $$p_win{'ts'}, $w - 1);
hline($y + $h, $x + 1, $$p_win{'bs'}, $w - 1);
vline($y + 1, $x, $$p_win{'ls'}, $h - 1);
vline($y + 1, $x + $w, $$p_win{'rs'}, $h - 1);
}
else {
for ($j = $y; $j <= $y + $h; $j++) {
for ($i = $x; $i <= $x + $w; $i++) {
addch($j, $i, ' ');
}
}
}
refresh();
}

47
ncurses_programs/perl/09.pl Executable file
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#!/usr/bin/perl
#
# Copyright (C) 2003 by Virtusa Corporation
# http://www.virtusa.com
#
# Anuradha Ratnaweera
# http://www.linux.lk/~anuradha/
#
use Curses;
initscr();
unless (has_colors()) {
endwin();
print "Your terminal does not support color\n";
exit 1;
}
start_color();
init_pair(1, COLOR_RED, COLOR_BLACK);
attron(COLOR_PAIR(1));
print_in_middle(stdscr, $LINES / 2, 0, 0, "Viola !!! In color ...");
attroff(COLOR_PAIR(1));
getch();
endwin();
sub print_in_middle {
$win = shift;
$starty = shift;
$startx = shift;
$width = shift;
$string = shift;
$win = stdscr unless ($win);
getyx($win, $y, $x);
$x = $startx if ($startx);
$y = $starty if ($starty);
$width = $COLS unless ($width);
$length = length($string);
$temp = ($width - $length) / 2;
$x = $startx + $temp;
addstr($y, $x, $string);
refresh();
}

98
ncurses_programs/perl/10.pl Executable file
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#!/usr/bin/perl
#
# Copyright (C) 2003 by Virtusa Corporation
# http://www.virtusa.com
#
# Anuradha Ratnaweera
# http://www.linux.lk/~anuradha/
#
use Curses;
$width = 30;
$height = 10;
$startx = 0;
$starty = 0;
@choices = (
"Choice 1",
"Choice 2",
"Choice 3",
"Choice 4",
"Exit"
);
$n_choices = @choices;
$highlight = 1;
$choice = 0;
initscr();
clear();
noecho();
cbreak();
$startx = ($COLS - $width) / 2;
$starty = ($LINES - $height) / 2;
$menu_win = newwin($height, $width, $starty, $startx);
keypad(1);
keypad($menu_win, 1);
addstr(0, 0, "Use arrow keys to go up and down, Press enter to select a choice");
refresh();
print_menu($menu_win, $highlight);
while (1) {
$c = getch($menu_win);
if ($c == KEY_UP) {
if ($highlight == 1) {
$highlight = $n_choices;
}
else {
$highlight--;
}
}
elsif ($c == KEY_DOWN) {
if ($highlight == $n_choices) {
$highlight = 1;
}
else {
$highlight++;
}
}
elsif ($c == '\n') {
$choice = $highlight;
}
else {
addstr($LINES - 2, 0, "Character pressed is $c");
refresh();
}
print_menu($menu_win, $highlight);
last if ($choice);
}
addstr($LINES - 2, 0, "You chose choice $choice with choice string $choices[$choice-1]");
clrtoeol();
refresh();
endwin();
sub print_menu {
$menu_win = shift;
$highlight = shift;
$x = 2;
$y = 2;
box($menu_win, 0, 0);
for ($i = 0; $i < $n_choices; $i++) {
if ($highlight == $i + 1) {
attron($menu_win, A_REVERSE);
addstr($menu_win, $y, $x, $choices[$i]);
attroff($menu_win, A_REVERSE);
}
else {
addstr($menu_win, $y, $x, $choices[$i]);
}
$y++;
}
refresh($menu_win);
}

2
ncurses_programs/perl/COPYING Normal file
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These programmes can be distributed under the same terms as
ncurses (MIT style license).

6
ncurses_programs/perl/README Normal file
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The license was changed from GNU/GPL to MIT style license
which is of course compatible with GPL, in order to include
them in the official ncurses-HOWTO.
Anuradha Ratnaweera (anuradha at gnu org OR gnu.slash.linux at
gmail com OR anuradha at linux lk).