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30 * $Id: movewindow.c,v 1.52 2021/12/18 18:57:55 tom Exp $
32 * Demonstrate move functions for windows and derived windows from the curses
35 * Author: Thomas E. Dickey
44 add command to reset subwindow's origin to coincide with parent.
45 add command to delete subwindow (check if it has subwindows though)
48 #include <test.priv.h>
50 #if HAVE_MVDERWIN && HAVE_MVWIN
52 #include <popup_msg.h>
61 #define LINE_MAX (LINES - 2)
63 #define COL_MAX (COLS - 2)
70 WINDOW *parent; /* need this since WINDOW->_parent is not portable */
71 WINDOW *child; /* the actual value */
74 static void head_line(CONST_FMT char *fmt, ...) GCC_PRINTFLIKE(1, 2);
75 static void tail_line(CONST_FMT char *fmt, ...) GCC_PRINTFLIKE(1, 2);
77 static unsigned num_windows;
78 static FRAME *all_windows;
85 ExitProgram(EXIT_FAILURE);
89 message(int lineno, CONST_FMT char *fmt, va_list argp)
100 vsprintf(buffer, fmt, argp);
103 #elif defined(HAVE_VW_PRINTW)
104 vw_printw(stdscr, fmt, argp);
106 vwprintw(stdscr, fmt, argp);
114 head_line(CONST_FMT char *fmt, ...)
119 message(0, fmt, argp);
124 tail_line(CONST_FMT char *fmt, ...)
129 message(LINES - 1, fmt, argp);
134 * Arrow keys move cursor, return location at current on non-arrow key.
137 selectcell(WINDOW *parent,
144 static PAIR res; /* result cell */
145 int si = lri - uli + 1; /* depth of the select area */
146 int sj = lrj - ulj + 1; /* width of the select area */
147 int i = 0, j = 0; /* offsets into the select area */
154 getparyx(child, i, j);
156 getbegyx(child, i, j);
157 i -= uli + getbegy(parent);
158 j -= ulj + getbegx(parent);
168 tail_line("Upper left [%2d,%2d] Lower right [%2d,%2d] -> %d,%d -> %d,%d",
173 wmove(parent, uli + i, ulj + j);
175 switch (wgetch(parent)) {
196 #ifdef NCURSES_MOUSE_VERSION
202 if (event.y > uli && event.x > ulj) {
203 if (parent != stdscr) {
204 i = event.y - getbegy(parent) - uli;
205 j = event.x - getbegx(parent) - ulj;
234 * If the caller can handle continuous movement, return the result.
246 * Ask user for a window definition.
249 getwindow(WINDOW *parent, PAIR * ul, PAIR * lr)
251 int min_col = (parent == stdscr) ? COL_MIN : 0;
252 int max_col = (parent == stdscr) ? COL_MAX : getmaxx(parent);
253 int min_line = (parent == stdscr) ? LINE_MIN : 0;
254 int max_line = (parent == stdscr) ? LINE_MAX : getmaxy(parent);
258 head_line("Use arrows to move cursor, anything else to mark corner 1");
259 if ((tmp = selectcell(parent, 0,
265 MvWAddCh(parent, ul->y, ul->x, '*');
267 head_line("Use arrows to move cursor, anything else to mark corner 2");
268 if ((tmp = selectcell(parent, 0,
274 MvWAddCh(parent, lr->y, lr->x, '*');
275 wmove(parent, lr->y, lr->x);
278 result = (lr->y != ul->y && lr->x != ul->x);
286 * Draw a box inside the given window.
289 box_inside(WINDOW *win)
295 getmaxyx(win, y1, x1);
297 MvWHLine(win, 0, 0, ACS_HLINE, x1);
298 MvWHLine(win, y1 - 1, 0, ACS_HLINE, x1);
300 MvWVLine(win, 0, 0, ACS_VLINE, y1);
301 MvWVLine(win, 0, x1 - 1, ACS_VLINE, y1);
303 MvWAddCh(win, 0, 0, ACS_ULCORNER);
304 MvWAddCh(win, y1 - 1, 0, ACS_LLCORNER);
305 MvWAddCh(win, 0, x1 - 1, ACS_URCORNER);
306 MvWAddCh(win, y1 - 1, x1 - 1, ACS_LRCORNER);
314 * Add a window to our list.
317 add_window(WINDOW *parent, WINDOW *child)
319 static unsigned have = 0;
320 unsigned need = ((num_windows + 1) | 31) + 1;
324 all_windows = typeRealloc(FRAME, need, all_windows);
326 failed("add_window");
328 all_windows[num_windows].parent = parent;
329 all_windows[num_windows].child = child;
334 window2num(WINDOW *win)
338 for (n = 0; n < (int) num_windows; ++n) {
339 if (win == all_windows[n].child) {
348 parent_of(WINDOW *win)
351 int n = window2num(win);
353 result = all_windows[n].parent;
358 repaint_one(WINDOW *win)
365 refresh_all(WINDOW *win)
369 for (n = 0; n < num_windows; ++n) {
370 if (all_windows[n].child != win) {
371 repaint_one(all_windows[n].child);
380 next_window(WINDOW *win)
382 WINDOW *result = win;
383 int n = window2num(win);
386 result = all_windows[(unsigned) n % num_windows].child;
394 prev_window(WINDOW *win)
396 WINDOW *result = win;
397 int n = window2num(win);
401 n = (int) (num_windows - 1);
402 result = all_windows[(unsigned) n % num_windows].child;
410 recur_move_window(WINDOW *parent, int dy, int dx)
414 for (n = 0; n < num_windows; ++n) {
415 if (all_windows[n].parent == parent) {
416 mvwin(all_windows[n].child, dy, dx);
417 recur_move_window(all_windows[n].child, dy, dx);
426 move_window(WINDOW *win, bool recur)
428 WINDOW *parent = parent_of(win);
432 bool top = (parent == stdscr);
433 int min_col = top ? COL_MIN : 0;
434 int max_col = top ? COL_MAX : getmaxx(parent);
435 int min_line = top ? LINE_MIN : 0;
436 int max_line = top ? LINE_MAX : getmaxy(parent);
440 head_line("Select new position for %swindow", top ? "" : "sub");
442 while ((tmp = selectcell(parent,
449 getbegyx(parent, y0, x0);
451 * Moving a subwindow has the effect of moving a viewport around
452 * the screen. The parent window retains the contents of the
453 * subwindow in the original location, but the viewport will show
454 * the contents (again) at the new location. So it will look odd
457 if (mvwin(win, y0 + tmp->y, x0 + tmp->x) != ERR) {
459 recur_move_window(win, tmp->y, tmp->x);
476 show_derwin(WINDOW *win)
478 int pary, parx, maxy, maxx;
480 getmaxyx(win, maxy, maxx);
481 getparyx(win, pary, parx);
483 head_line("Select new position for derived window at %d,%d (%d,%d)",
484 pary, parx, maxy, maxx);
491 move_derwin(WINDOW *win)
493 WINDOW *parent = parent_of(win);
497 bool top = (parent == stdscr);
498 int min_col = top ? COL_MIN : 0;
499 int max_col = top ? COL_MAX : getmaxx(parent);
500 int min_line = top ? LINE_MIN : 0;
501 int max_line = top ? LINE_MAX : getmaxy(parent);
506 while ((tmp = selectcell(parent,
512 if (mvderwin(win, tmp->y, tmp->x) != ERR) {
531 fill_window(WINDOW *win, chtype ch)
538 getmaxyx(win, y1, x1);
539 for (y = 0; y < y1; ++y) {
540 for (x = 0; x < x1; ++x) {
541 MvWAddCh(win, y, x, ch);
550 fill_with_pattern(WINDOW *win)
558 getmaxyx(win, y1, x1);
559 for (y = 0; y < y1; ++y) {
560 for (x = 0; x < x1; ++x) {
561 MvWAddCh(win, y, x, (chtype) ch);
571 #define lines_of(ul,lr) (lr.y - ul.y + 1)
572 #define cols_of(ul,lr) (lr.x - ul.x + 1)
573 #define pair_of(ul) ul.y, ul.x
576 create_my_window(WINDOW *current)
581 if (getwindow(stdscr, &ul, &lr)) {
582 result = newwin(lines_of(ul, lr), cols_of(ul, lr), pair_of(ul));
584 fill_window(result, 'c');
585 add_window(stdscr, result);
594 create_my_derwin(WINDOW *parent)
599 if (getwindow(parent, &ul, &lr)) {
600 result = derwin(parent, lines_of(ul, lr), cols_of(ul, lr), pair_of(ul));
602 fill_window(result, 'd');
603 add_window(parent, result);
612 create_my_subwin(WINDOW *parent)
617 if (getwindow(parent, &ul, &lr)) {
618 result = subwin(parent,
621 ul.y + getbegy(parent),
622 ul.x + getbegx(parent));
624 fill_window(result, 's');
625 add_window(parent, result);
634 show_help(WINDOW *current)
639 CONST_FMT char * msg;
641 { HELP_KEY_1, "Show this screen" },
642 { 'b', "Draw a box inside the current window" },
643 { 'c', "Create a new window" },
644 { 'd', "Create a new derived window" },
645 { 'D', "Move derived window (moves viewport)" },
646 { 'f', "Fill the current window with the next character" },
647 { 'F', "Fill the current window with a pattern" },
648 { 'm', "Move the current window" },
649 { 'M', "Move the current window (and its children)" },
651 { 's', "Create a new subwindow" },
652 { CTRL('L'), "Repaint all windows, doing current one last" },
653 { CTRL('N'), "Cursor to next window" },
654 { CTRL('P'), "Cursor to previous window" },
658 char **msgs = typeCalloc(char *, SIZEOF(help) + 1);
661 for (n = 0; n < SIZEOF(help); ++n) {
662 size_t need = (21 + strlen(help[n].msg));
663 msgs[n] = typeMalloc(char, need);
664 _nc_SPRINTF(msgs[n], _nc_SLIMIT(need)
665 "%-20s%s", keyname(help[n].key), help[n].msg);
667 popup_msg2(current, msgs);
668 for (n = 0; n < SIZEOF(help); ++n) {
675 main(int argc GCC_UNUSED, char *argv[]GCC_UNUSED)
685 intrflush(stdscr, FALSE);
687 add_window(0, current_win = stdscr);
689 #ifdef NCURSES_MOUSE_VERSION
690 (void) mousemask(BUTTON1_CLICKED, (mmask_t *) NULL);
691 #endif /* NCURSES_MOUSE_VERSION */
693 while (!done && (ch = wgetch(current_win)) != ERR) {
696 getyx(current_win, y, x);
700 show_help(current_win);
703 box_inside(current_win);
706 current_win = create_my_window(current_win);
709 current_win = create_my_derwin(current_win);
712 if (!move_derwin(current_win)) {
718 fill_window(current_win, (chtype) wgetch(current_win));
721 fill_with_pattern(current_win);
725 if (!move_window(current_win, (ch == 'M'))) {
734 current_win = create_my_subwin(current_win);
737 refresh_all(current_win);
740 current_win = next_window(current_win);
743 current_win = prev_window(current_win);
746 /* want to allow cursor to move around the current window too */
747 /* want to test the resizing of windows and subwindows too */
748 /* want to allow deleting a window also */
751 wmove(current_win, y, x);
752 tail_line("unrecognized key (use '?' for help)");
756 tail_line("size [%d,%d] begin [%d,%d] parent [%d,%d]",
757 getmaxy(current_win),
758 getmaxx(current_win),
759 getbegy(current_win),
760 getbegx(current_win),
761 getpary(current_win),
762 getparx(current_win));
763 wmove(current_win, 0, 0);
769 ExitProgram(EXIT_SUCCESS);
775 printf("This program requires the curses mvderwin and mvwin functions\n");
776 ExitProgram(EXIT_FAILURE);