static void test_redraw(WINDOW *win) { WINDOW *win1; WINDOW *win2; bool done = FALSE; int ch, y, x; int max_y, max_x; int beg_y, beg_x; assert(win != 0); scrollok(win, TRUE); keypad(win, TRUE); getmaxyx(win, max_y, max_x); getbegyx(win, beg_y, beg_x); while (!done && win != 0) { ch = wgetch(win); getyx(win, y, x); switch (ch) { case 'q': /* FALLTHRU */ case ESCAPE: done = TRUE; break; case 'w': win1 = newwin(max_y, max_x, beg_y, beg_x); win2 = newwin(max_y - 2, max_x - 2, beg_y + 1, beg_x + 1); box(win1, 0, 0); wrefresh(win1); test_redraw(win2); delwin(win2); delwin(win1); touchwin(win); break; case '!': /* * redrawwin() and wredrawln() do not take into account the * possibility that the cursor may have moved. That makes them * cumbersome for using with a shell command. So we simply * trash the current line of the window using backspace/overwrite. */ trash(beg_x, max_x, x + beg_x); break; #ifdef NCURSES_VERSION case '@': /* * For a shell command, we can work around the problem noted above * using mvcur(). It is ifdef'd for NCURSES, since X/Open does * not define the case where the old location is unknown. */ IGNORE_RC(system("date")); mvcur(-1, -1, y, x); break; #endif case CTRL('W'): redrawwin(win); break; case CTRL('L'): wredrawln(win, y, 1); break; case KEY_UP: if (y > 0) wmove(win, y - 1, x); break; case KEY_DOWN: if (y < max_y) wmove(win, y + 1, x); break; case KEY_LEFT: if (x > 0) wmove(win, y, x - 1); break; case KEY_RIGHT: if (x < max_x) wmove(win, y, x + 1); break; default: if (ch > KEY_MIN) { waddstr(win, keyname(ch)); } else { waddstr(win, unctrl(UChar(ch))); } break; } wnoutrefresh(win); doupdate(); } }
static void test_redraw(WINDOW *win) { static const char *help[] = { "Commands:", " ^Q/ESC/q - quit", " w - recur in a new window", " ! - overwrite current line using stdio outside curses.", #ifdef NCURSES_VERSION " @ - run \"date\" command, to put its output on screen.", #endif " ^L - call redrawwin() for current window.", " ^W - call wredrawln() for current line/current window.", " arrow-keys - move cursor on the screen", "", "Other control characters are added to the screen in printable form.", "Other printable characters are added to the screen as is.", 0 }; WINDOW *win1; WINDOW *win2; bool done = FALSE; int ch, y, x; int max_y, max_x; int beg_y, beg_x; assert(win != 0); scrollok(win, TRUE); keypad(win, TRUE); getmaxyx(win, max_y, max_x); getbegyx(win, beg_y, beg_x); while (!done) { ch = wgetch(win); getyx(win, y, x); switch (ch) { case 'q': /* FALLTHRU */ case QUIT: case ESCAPE: done = TRUE; break; case 'w': win1 = newwin(max_y, max_x, beg_y, beg_x); win2 = newwin(max_y - 2, max_x - 2, beg_y + 1, beg_x + 1); box(win1, 0, 0); wrefresh(win1); test_redraw(win2); delwin(win2); delwin(win1); touchwin(win); break; case '!': /* * redrawwin() and wredrawln() do not take into account the * possibility that the cursor may have moved. That makes them * cumbersome for using with a shell command. So we simply * trash the current line of the window using backspace/overwrite. */ trash(beg_x, max_x, x + beg_x); break; #ifdef NCURSES_VERSION case '@': /* * For a shell command, we can work around the problem noted above * using mvcur(). It is ifdef'd for NCURSES, since X/Open does * not define the case where the old location is unknown. */ IGNORE_RC(system("date")); mvcur(-1, -1, y, x); break; #endif case CTRL('W'): redrawwin(win); break; case CTRL('L'): wredrawln(win, y, 1); break; case KEY_UP: if (y > 0) wmove(win, y - 1, x); break; case KEY_DOWN: if (y < max_y) wmove(win, y + 1, x); break; case KEY_LEFT: if (x > 0) wmove(win, y, x - 1); break; case KEY_RIGHT: if (x < max_x) wmove(win, y, x + 1); break; case HELP_KEY_1: popup_msg(win, help); break; default: if (ch > KEY_MIN) { waddstr(win, keyname(ch)); waddch(win, '\n'); } else { waddstr(win, unctrl(UChar(ch))); } break; } wnoutrefresh(win); doupdate(); } }