X-Git-Url: http://git.madism.org/?a=blobdiff_plain;f=demo%2Fboxshell.c;h=505f6b9c0307ec804799555361523938a54f75ae;hb=c3f780f9456ff7adde5b8041596e200a9b41c588;hp=4ce22574efd56d8292cdb677ac6b2b358ea21662;hpb=93c516d8991c4b6935fc03a24317ea0785e78a93;p=apps%2Fmadtty.git diff --git a/demo/boxshell.c b/demo/boxshell.c index 4ce2257..505f6b9 100644 --- a/demo/boxshell.c +++ b/demo/boxshell.c @@ -2,119 +2,137 @@ * and lets the user interact with it. * * To compile: - * gcc -o boxshell boxshell.c $(rote-config --cflags --libs) + * gcc -o boxshell boxshell.c $(pkg-config madtty --cflags --libs) */ #include -#include -#include -#include -static unsigned char getout = 0; -void sigchld(int signo) { getout = 1; } -int my_custom_handler(RoteTerm *rt, const char *es); - -int screen_w, screen_h; -WINDOW *term_win; - -int main() { - RoteTerm *rt; - int i, j, ch; - - signal(SIGCHLD, sigchld); - - initscr(); - noecho(); - start_color(); - raw(); - nodelay(stdscr, TRUE); /* prevents getch() from blocking; rather - * it will return ERR when there is no - * keypress available */ - - keypad(stdscr, TRUE); /* necessary to use rote_vt_keypress */ - getmaxyx(stdscr, screen_h, screen_w); - - /* initialize the color pairs the way rote_vt_draw expects it. You might - * initialize them differently, but in that case you would need - * to supply a custom conversion function for rote_vt_draw to - * call when setting attributes. The idea of this "default" mapping - * is to map (fg,bg) to the color pair bg * 8 + 7 - fg. This way, - * the pair (white,black) ends up mapped to 0, which means that - * it does not need a color pair (since it is the default). Since - * there are only 63 available color pairs (and 64 possible fg/bg - * combinations), we really have to save 1 pair by assigning no pair - * to the combination white/black. */ - for (i = 0; i < 8; i++) for (j = 0; j < 8; j++) - if (i != 7 || j != 0) - init_pair(j*8+7-i, i, j); - - /* paint the screen blue */ - attrset(COLOR_PAIR(32)); - for (i = 0; i < screen_h; i++) for (j = 0; j < screen_w; j++) addch(' '); - refresh(); - - /* create a window with a frame */ - term_win = newwin(22,72,1,4); - wattrset(term_win, COLOR_PAIR(7*8+7-0)); /* black over white */ - wborder(term_win, 0, 0, 0, 0, 0, 0, 0, 0); - mvwprintw(term_win, 0, 27, " Term In a Box "); - wrefresh(term_win); - - /* create the terminal and have it run bash */ - rt = rote_vt_create(20, 70); - rote_vt_forkpty(rt, "/bin/bash --login"); - - /* add a sample custom escape sequence handler... say we want to handle - * the sequence, say, \e{N}, which will change the application's background - * color to N (where N is a number between 0 and 7). */ - rote_vt_install_handler(rt, my_custom_handler); - - /* keep reading keypresses from the user and passing them to the terminal; - * also, redraw the terminal to the window at each iteration */ - ch = '\0'; - while (!getout) { - rote_vt_draw(rt, term_win, 1, 1, NULL); - wrefresh(term_win); - - ch = getch(); - if (ch != ERR) - rote_vt_keypress(rt, ch); /* pass the keypress for handling */ - } - - endwin(); - return 0; +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +static int getout = 0, sigwinch = 0; +static int screen_w, screen_h; +static WINDOW *term_win; +static struct timeval const slice = { 0, 1000 * 1000 / 100 }; + +void handler(int signo) +{ + switch (signo) { + case SIGCHLD: + getout = 1; + break; + case SIGWINCH: + sigwinch = 1; + break; + } } +static struct timeval timeval_add(struct timeval a, struct timeval b) +{ + int usec = a.tv_usec + b.tv_usec; + a.tv_sec += b.tv_sec; + while (usec > 1000 * 1000) { + a.tv_sec += 1; + usec -= 1000 * 1000; + } + a.tv_usec = usec; + return a; +} -int my_custom_handler(RoteTerm *rt, const char *es) { - int color; - int i, j; - - /* if the escape sequence does not begin with '{', we give up */ - if (*es != '{') return ROTE_HANDLERESULT_NOWAY; - - /* ok, now we know it begins with '{'. Now, if it does not end with '}', - * it is not yet complete */ - if (es[strlen(es)-1] != '}') return ROTE_HANDLERESULT_NOTYET; - - /* ok, the sequence is complete */ - color = atoi(es + 1); - if (color < 0 || color > 7) return false; /* don't recognize it */ - - /* paint the background with that color */ - attrset(COLOR_PAIR(color * 8)); - move(0, 0); - for (i = 0; i < screen_h; i++) for (j = 0; j < screen_w; j++) addch(' '); - touchwin(stdscr); - refresh(); - - /* touch term_win to force it to do a full redraw next time */ - touchwin(term_win); - - /* and redraw the terminal window */ - wrefresh(term_win); - - /* escape sequence was handled ok */ - return ROTE_HANDLERESULT_OK; +static int is_expired(struct timeval now, struct timeval expiry) +{ + return now.tv_sec > expiry.tv_sec + || (now.tv_sec == expiry.tv_sec && now.tv_usec > expiry.tv_usec); } +int main(void) +{ + madtty_t *rt; + int dirty = 0, pty; + struct timeval next; + + signal(SIGCHLD, handler); + signal(SIGWINCH, handler); + + madtty_initialize(); + getmaxyx(stdscr, screen_h, screen_w); + + /* create a window with a frame */ + term_win = newwin(screen_h - 2, screen_w - 2, 1, 1); + rt = madtty_create(screen_h - 2, screen_w -2); + { + const char *path = getenv("SHELL") ?: "/bin/sh"; + const char *args[] = { path, "--login", NULL}; + + madtty_forkpty(rt, path, args, &pty); + } + + /* keep reading keypresses from the user and passing them to the terminal; + * also, redraw the terminal to the window at each iteration */ + gettimeofday(&next, NULL); + while (!getout) { + struct timeval tv = { 0, 1000 * 1000 / 100 }; + fd_set rfds; + int ch; + + FD_ZERO(&rfds); + FD_SET(0, &rfds); + FD_SET(pty, &rfds); + + if (select(pty + 1, &rfds, NULL, NULL, &tv) > 0) { + if (FD_ISSET(pty, &rfds)) { + madtty_process(rt); + dirty = 1; + } + } + + if (sigwinch) { + int fd, cols = -1, rows = -1; + struct winsize w; + + if ((fd = open("/dev/tty", O_RDONLY)) != -1) { + if (ioctl(fd, TIOCGWINSZ, &w) != -1) { + rows = w.ws_row; + cols = w.ws_col; + } + close(fd); + } + if (rows <= 0) { + rows = atoi(getenv("LINES") ?: "24"); + } + if (cols <= 0) { + cols = atoi(getenv("COLUMNS") ?: "80"); + } + + resizeterm(rows, cols); + madtty_resize(rt, rows - 2, cols - 2); + wresize(term_win, rows - 2, cols - 2); + sigwinch = 0; + erase(); + } + + while ((ch = getch()) != ERR) { + madtty_keypress(rt, ch); /* pass the keypress for handling */ + dirty = 1; + } + + gettimeofday(&tv, NULL); + if (dirty && is_expired(tv, next)) { + madtty_draw(rt, term_win, 0, 0); + wrefresh(term_win); + dirty = 0; + next = timeval_add(tv, slice); + } + } + + endwin(); + return 0; +}