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Diffstat (limited to 'lib/libcurses/PSD.doc/ex2.c')
| -rw-r--r-- | lib/libcurses/PSD.doc/ex2.c | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/lib/libcurses/PSD.doc/ex2.c b/lib/libcurses/PSD.doc/ex2.c new file mode 100644 index 0000000..13e8f29 --- /dev/null +++ b/lib/libcurses/PSD.doc/ex2.c @@ -0,0 +1,210 @@ +.\" Copyright (c) 1992, 1993 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by the University of +.\" California, Berkeley and its contributors. +.\" 4. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)ex2.c 8.1 (Berkeley) 6/8/93 +.\" +#include <curses.h> +#include <stdio.h> +#include <signal.h> + +#define YSIZE LINES +#define XSIZE COLS + +static int quit(); + +/* + * This program fills the screen up with characters and the allows the user to + * manipulate the text on the screen using some basic commands. + * Nothing fancy, just a demonstration of the elementary features of the + * curses(3) package. + */ +main() +{ + int i, j, c, n, d = 0; + char id[100]; + int hh = 0; + int curx, cury, base, arg; + + initscr(); + signal(SIGINT, quit); + crmode(); + noecho(); + nonl(); + delwin(stdscr); + stdscr = newwin(YSIZE, XSIZE, 0, 0); + flushok(stdscr, TRUE); + scrollok(stdscr, TRUE); + erase(); + refresh(); + + move(0,0); + refresh(); + for (i = 0; i < YSIZE + 2; i++) { + sprintf(id, "%d: ", i); + addstr(id); + for (j = 0; j < XSIZE - strlen(id); j++) + addch('0' + (i % 10)); + } + c = getchar(); + base = 2; + curx = cury = 0; + move(0, 0); + refresh(); + + /* + * The screen manipulator has the following commands: + * 'D' - clear to the end of the current line. + * 'B' - clear to the bottom of the screen. + * 'E' - erase the screen. + * 's' - enter standout mode. + * 'e' - exit standout mode. + * 'd' n - delete n lines below cursor line. + * 'i' n - insert n lines below cursor line. + * 'q' - quit. + * 'f' - move cursor one position to the right. + * 'b' - move cursor one position to the left. + * 'n' - move cursor one line down. + * 'p' - move cursor one line up. + * 'h' - home cusor. + * 'l' - force refresh. + * 'r' - simulate a carriage return. + * + * All other characters are ignored. + */ + for(;;) { + switch(c = getchar()) { + case 'D': + clrtoeol(); + refresh(); + continue; + case 'B': + clrtobot(); + refresh(); + continue; + case 'E': + erase(); + refresh(); + continue; + case 's': + standout(); + continue; + case 'e': + standend(); + continue; + case 'd': + arg = getchar() - '0'; + for (i = 0; i < arg; i++) + deleteln(); + refresh(); + continue; + case 'i': + arg = getchar() - '0'; + for (i = 0; i < arg; i++) + insertln(); + refresh(); + continue; + case 'q': + quit(); + case 'f': + if (curx < XSIZE - 1) + curx++; + else { + cury++; + curx = 0; + } + break; + case 'b': + if (curx == 0) { + cury--; + curx = XSIZE - 1; + } else + curx--; + break; + case 'n': + cury++; + break; + case 'p': + cury--; + break; + case 'h': + curx = cury = 0; + break; + case 'l': + wrefresh(curscr); + continue; + case 'r': /* return */ + { + int x, y; + getyx(stdscr, y, x); + move(y+1, 0); + insertln(); + move(y, x); + clrtoeol(); + refresh(); + continue; + } + default: + continue; + } + + if (cury < 0) { + base--; + move(0, 0); + insertln(); + sprintf(id, "%d: ", base); + addstr(id); + for (j = 0; j < XSIZE - strlen(id) - 2; j++) + addch('0' + (base % 10)); + cury++; + } else if (cury >= YSIZE) { + move(0, 0); + deleteln(); + move(YSIZE - 1, 0); + sprintf(id, "%d: ", base + YSIZE); + addstr(id); + for (j = 0; j < XSIZE - strlen(id) - 2; j++) + addch('0' + ((base + YSIZE) % 10)); + cury--; + base++; + } + move(cury, curx); + refresh(); + } +} + +int +quit() +{ + erase(); + refresh(); + endwin(); + exit(0); +} |
