/* * Display a temporary window listing the keystroke-commands we recognize. */ void help_edit_field(void) { int x0 = 4; int y0 = 2; int y1 = 0; int y2 = 0; int wide = COLS - ((x0 + 1) * 2); int high = LINES - ((y0 + 1) * 2); WINDOW *help = newwin(high, wide, y0, x0); WINDOW *data = newpad(2 + SIZEOF(commands), wide - 4); unsigned n; int ch = ERR; begin_popup(); keypad(help, TRUE); keypad(data, TRUE); waddstr(data, "Defined form edit/traversal keys:\n"); for (n = 0; n < SIZEOF(commands); ++n) { const char *name; #ifdef NCURSES_VERSION if ((name = form_request_name(commands[n].result)) == 0) #endif name = commands[n].help; wprintw(data, "%s -- %s\n", keyname(commands[n].code), name != 0 ? name : commands[n].help); } waddstr(data, "Arrow keys move within a field as you would expect."); y2 = getcury(data); do { switch (ch) { case KEY_HOME: y1 = 0; break; case KEY_END: y1 = y2; break; case KEY_PREVIOUS: case KEY_PPAGE: if (y1 > 0) { y1 -= high / 2; if (y1 < 0) y1 = 0; } else { beep(); } break; case KEY_NEXT: case KEY_NPAGE: if (y1 < y2) { y1 += high / 2; if (y1 >= y2) y1 = y2; } else { beep(); } break; case CTRL('P'): case KEY_UP: if (y1 > 0) --y1; else beep(); break; case CTRL('N'): case KEY_DOWN: if (y1 < y2) ++y1; else beep(); break; default: beep(); break; case ERR: break; } werase(help); box(help, 0, 0); wnoutrefresh(help); pnoutrefresh(data, y1, 0, y0 + 1, x0 + 1, high, wide); doupdate(); } while ((ch = wgetch(data)) != ERR && ch != QUIT && ch != ESCAPE); werase(help); wrefresh(help); delwin(help); delwin(data); end_popup(); }
/* * Display a temporary window, e.g., to display a help-message. */ void popup_msg(WINDOW *parent, const char *const *msg) { int x0 = 4; int y0 = 2; int y1 = 0; int y2 = 0; int wide = getmaxx(parent) - ((x0 + 1) * 2); int high = getmaxy(parent) - ((y0 + 1) * 2); WINDOW *help; WINDOW *data; int n; int width = 0; int length; int last_y; int ch = ERR; for (n = 0; msg[n] != 0; ++n) { int check = (int) strlen(msg[n]); if (width < check) width = check; } length = n; if ((help = newwin(high, wide, y0, x0)) == 0) return; if ((data = newpad(length + 1, width)) == 0) return; begin_popup(); keypad(data, TRUE); for (n = 0; n < length; ++n) { waddstr(data, msg[n]); if ((n + 1) < length) { waddch(data, '\n'); } } y2 = getcury(data); last_y = (y2 - (high - 3)); do { switch (ch) { case KEY_HOME: y1 = 0; break; case KEY_END: y1 = last_y; break; case KEY_PREVIOUS: case KEY_PPAGE: if (y1 > 0) { y1 -= high / 2; if (y1 < 0) y1 = 0; } else { beep(); } break; case KEY_NEXT: case KEY_NPAGE: if (y1 < last_y) { y1 += high / 2; if (y1 > last_y) y1 = last_y; } else { beep(); } break; case CTRL('P'): case KEY_UP: if (y1 > 0) --y1; else beep(); break; case CTRL('N'): case KEY_DOWN: if (y1 < last_y) ++y1; else beep(); break; default: beep(); break; case ERR: break; } werase(help); box(help, 0, 0); wnoutrefresh(help); pnoutrefresh(data, y1, 0, y0 + 1, x0 + 1, high, wide); doupdate(); } while ((ch = wgetch(data)) != ERR && ch != QUIT && ch != ESCAPE); werase(help); wrefresh(help); delwin(help); delwin(data); end_popup(); }