| /* Public Domain Curses */ |
| |
| #include <curspriv.h> |
| |
| RCSID("$Id: window.c,v 1.62 2008/07/13 16:08:18 wmcbrine Exp $") |
| |
| /*man-start************************************************************** |
| |
| Name: window |
| |
| Synopsis: |
| WINDOW *newwin(int nlines, int ncols, int begy, int begx); |
| WINDOW *derwin(WINDOW* orig, int nlines, int ncols, |
| int begy, int begx); |
| WINDOW *subwin(WINDOW* orig, int nlines, int ncols, |
| int begy, int begx); |
| WINDOW *dupwin(WINDOW *win); |
| int delwin(WINDOW *win); |
| int mvwin(WINDOW *win, int y, int x); |
| int mvderwin(WINDOW *win, int pary, int parx); |
| int syncok(WINDOW *win, bool bf); |
| void wsyncup(WINDOW *win); |
| void wcursyncup(WINDOW *win); |
| void wsyncdown(WINDOW *win); |
| |
| WINDOW *resize_window(WINDOW *win, int nlines, int ncols); |
| int wresize(WINDOW *win, int nlines, int ncols); |
| WINDOW *PDC_makelines(WINDOW *win); |
| WINDOW *PDC_makenew(int nlines, int ncols, int begy, int begx); |
| void PDC_sync(WINDOW *win); |
| |
| Description: |
| newwin() creates a new window with the given number of lines, |
| nlines and columns, ncols. The upper left corner of the window |
| is at line begy, column begx. If nlines is zero, it defaults to |
| LINES - begy; ncols to COLS - begx. Create a new full-screen |
| window by calling newwin(0, 0, 0, 0). |
| |
| delwin() deletes the named window, freeing all associated |
| memory. In the case of overlapping windows, subwindows should be |
| deleted before the main window. |
| |
| mvwin() moves the window so that the upper left-hand corner is |
| at position (y,x). If the move would cause the window to be off |
| the screen, it is an error and the window is not moved. Moving |
| subwindows is allowed. |
| |
| subwin() creates a new subwindow within a window. The |
| dimensions of the subwindow are nlines lines and ncols columns. |
| The subwindow is at position (begy, begx) on the screen. This |
| position is relative to the screen, and not to the window orig. |
| Changes made to either window will affect both. When using this |
| routine, you will often need to call touchwin() before calling |
| wrefresh(). |
| |
| derwin() is the same as subwin(), except that begy and begx are |
| relative to the origin of the window orig rather than the |
| screen. There is no difference between subwindows and derived |
| windows. |
| |
| mvderwin() moves a derived window (or subwindow) inside its |
| parent window. The screen-relative parameters of the window are |
| not changed. This routine is used to display different parts of |
| the parent window at the same physical position on the screen. |
| |
| dupwin() creates an exact duplicate of the window win. |
| |
| wsyncup() causes a touchwin() of all of the window's parents. |
| |
| If wsyncok() is called with a second argument of TRUE, this |
| causes a wsyncup() to be called every time the window is |
| changed. |
| |
| wcursyncup() causes the current cursor position of all of a |
| window's ancestors to reflect the current cursor position of the |
| current window. |
| |
| wsyncdown() causes a touchwin() of the current window if any of |
| its parent's windows have been touched. |
| |
| resize_window() allows the user to resize an existing window. It |
| returns the pointer to the new window, or NULL on failure. |
| |
| wresize() is an ncurses-compatible wrapper for resize_window(). |
| Note that, unlike ncurses, it will NOT process any subwindows of |
| the window. (However, you still can call it _on_ subwindows.) It |
| returns OK or ERR. |
| |
| PDC_makenew() allocates all data for a new WINDOW * except the |
| actual lines themselves. If it's unable to allocate memory for |
| the window structure, it will free all allocated memory and |
| return a NULL pointer. |
| |
| PDC_makelines() allocates the memory for the lines. |
| |
| PDC_sync() handles wrefresh() and wsyncup() calls when a window |
| is changed. |
| |
| Return Value: |
| newwin(), subwin(), derwin() and dupwin() return a pointer |
| to the new window, or NULL on failure. delwin(), mvwin(), |
| mvderwin() and syncok() return OK or ERR. wsyncup(), |
| wcursyncup() and wsyncdown() return nothing. |
| |
| Errors: |
| It is an error to call resize_window() before calling initscr(). |
| Also, an error will be generated if we fail to create a newly |
| sized replacement window for curscr, or stdscr. This could |
| happen when increasing the window size. NOTE: If this happens, |
| the previously successfully allocated windows are left alone; |
| i.e., the resize is NOT cancelled for those windows. |
| |
| Portability X/Open BSD SYS V |
| newwin Y Y Y |
| delwin Y Y Y |
| mvwin Y Y Y |
| subwin Y Y Y |
| derwin Y - Y |
| mvderwin Y - Y |
| dupwin Y - 4.0 |
| wsyncup Y - 4.0 |
| syncok Y - 4.0 |
| wcursyncup Y - 4.0 |
| wsyncdown Y - 4.0 |
| resize_window - - - |
| wresize - - - |
| PDC_makelines - - - |
| PDC_makenew - - - |
| PDC_sync - - - |
| |
| **man-end****************************************************************/ |
| |
| #include <stdlib.h> |
| |
| WINDOW *PDC_makenew(int nlines, int ncols, int begy, int begx) |
| { |
| WINDOW *win; |
| |
| PDC_LOG(("PDC_makenew() - called: lines %d cols %d begy %d begx %d\n", |
| nlines, ncols, begy, begx)); |
| |
| /* allocate the window structure itself */ |
| |
| if ((win = calloc(1, sizeof(WINDOW))) == (WINDOW *)NULL) |
| return win; |
| |
| /* allocate the line pointer array */ |
| |
| if ((win->_y = malloc(nlines * sizeof(chtype *))) == NULL) |
| { |
| free(win); |
| return (WINDOW *)NULL; |
| } |
| |
| /* allocate the minchng and maxchng arrays */ |
| |
| if ((win->_firstch = malloc(nlines * sizeof(int))) == NULL) |
| { |
| free(win->_y); |
| free(win); |
| return (WINDOW *)NULL; |
| } |
| |
| if ((win->_lastch = malloc(nlines * sizeof(int))) == NULL) |
| { |
| free(win->_firstch); |
| free(win->_y); |
| free(win); |
| return (WINDOW *)NULL; |
| } |
| |
| /* initialize window variables */ |
| |
| win->_maxy = nlines; /* real max screen size */ |
| win->_maxx = ncols; /* real max screen size */ |
| win->_begy = begy; |
| win->_begx = begx; |
| win->_bkgd = ' '; /* wrs 4/10/93 -- initialize background to blank */ |
| win->_clear = (bool) ((nlines == LINES) && (ncols == COLS)); |
| win->_bmarg = nlines - 1; |
| win->_parx = win->_pary = -1; |
| |
| /* init to say window all changed */ |
| |
| touchwin(win); |
| |
| return win; |
| } |
| |
| WINDOW *PDC_makelines(WINDOW *win) |
| { |
| int i, j, nlines, ncols; |
| |
| PDC_LOG(("PDC_makelines() - called: lines %d cols %d\n", nlines, ncols)); |
| |
| if (!win) |
| return (WINDOW *)NULL; |
| |
| nlines = win->_maxy; |
| ncols = win->_maxx; |
| |
| for (i = 0; i < nlines; i++) |
| { |
| if ((win->_y[i] = malloc(ncols * sizeof(chtype))) == NULL) |
| { |
| /* if error, free all the data */ |
| |
| for (j = 0; j < i; j++) |
| free(win->_y[j]); |
| |
| free(win->_firstch); |
| free(win->_lastch); |
| free(win->_y); |
| free(win); |
| |
| return (WINDOW *)NULL; |
| } |
| } |
| |
| return win; |
| } |
| |
| void PDC_sync(WINDOW *win) |
| { |
| PDC_LOG(("PDC_sync() - called:\n")); |
| |
| if (win->_immed) |
| wrefresh(win); |
| if (win->_sync) |
| wsyncup(win); |
| } |
| |
| WINDOW *newwin(int nlines, int ncols, int begy, int begx) |
| { |
| WINDOW *win; |
| |
| PDC_LOG(("newwin() - called:lines=%d cols=%d begy=%d begx=%d\n", |
| nlines, ncols, begy, begx)); |
| |
| if (!nlines) |
| nlines = LINES - begy; |
| if (!ncols) |
| ncols = COLS - begx; |
| |
| if ( (begy + nlines > SP->lines || begx + ncols > SP->cols) |
| || !(win = PDC_makenew(nlines, ncols, begy, begx)) |
| || !(win = PDC_makelines(win)) ) |
| return (WINDOW *)NULL; |
| |
| werase(win); |
| |
| return win; |
| } |
| |
| int delwin(WINDOW *win) |
| { |
| int i; |
| |
| PDC_LOG(("delwin() - called\n")); |
| |
| if (!win) |
| return ERR; |
| |
| /* subwindows use parents' lines */ |
| |
| if (!(win->_flags & (_SUBWIN|_SUBPAD))) |
| for (i = 0; i < win->_maxy && win->_y[i]; i++) |
| if (win->_y[i]) |
| free(win->_y[i]); |
| |
| free(win->_firstch); |
| free(win->_lastch); |
| free(win->_y); |
| free(win); |
| |
| return OK; |
| } |
| |
| int mvwin(WINDOW *win, int y, int x) |
| { |
| PDC_LOG(("mvwin() - called\n")); |
| |
| if (!win || (y + win->_maxy > LINES || y < 0) |
| || (x + win->_maxx > COLS || x < 0)) |
| return ERR; |
| |
| win->_begy = y; |
| win->_begx = x; |
| touchwin(win); |
| |
| return OK; |
| } |
| |
| WINDOW *subwin(WINDOW *orig, int nlines, int ncols, int begy, int begx) |
| { |
| WINDOW *win; |
| int i; |
| int j = begy - orig->_begy; |
| int k = begx - orig->_begx; |
| |
| PDC_LOG(("subwin() - called: lines %d cols %d begy %d begx %d\n", |
| nlines, ncols, begy, begx)); |
| |
| /* make sure window fits inside the original one */ |
| |
| if (!orig || (begy < orig->_begy) || (begx < orig->_begx) || |
| (begy + nlines) > (orig->_begy + orig->_maxy) || |
| (begx + ncols) > (orig->_begx + orig->_maxx)) |
| return (WINDOW *)NULL; |
| |
| if (!nlines) |
| nlines = orig->_maxy - 1 - j; |
| if (!ncols) |
| ncols = orig->_maxx - 1 - k; |
| |
| if ( !(win = PDC_makenew(nlines, ncols, begy, begx)) ) |
| return (WINDOW *)NULL; |
| |
| /* initialize window variables */ |
| |
| win->_attrs = orig->_attrs; |
| win->_bkgd = orig->_bkgd; |
| win->_leaveit = orig->_leaveit; |
| win->_scroll = orig->_scroll; |
| win->_nodelay = orig->_nodelay; |
| win->_use_keypad = orig->_use_keypad; |
| win->_immed = orig->_immed; |
| win->_sync = orig->_sync; |
| win->_pary = j; |
| win->_parx = k; |
| win->_parent = orig; |
| |
| for (i = 0; i < nlines; i++, j++) |
| win->_y[i] = orig->_y[j] + k; |
| |
| win->_flags |= _SUBWIN; |
| |
| return win; |
| } |
| |
| WINDOW *derwin(WINDOW *orig, int nlines, int ncols, int begy, int begx) |
| { |
| return subwin(orig, nlines, ncols, begy + orig->_begy, begx + orig->_begx); |
| } |
| |
| int mvderwin(WINDOW *win, int pary, int parx) |
| { |
| int i, j; |
| WINDOW *mypar; |
| |
| if (!win || !(win->_parent)) |
| return ERR; |
| |
| mypar = win->_parent; |
| |
| if (pary < 0 || parx < 0 || (pary + win->_maxy) > mypar->_maxy || |
| (parx + win->_maxx) > mypar->_maxx) |
| return ERR; |
| |
| j = pary; |
| |
| for (i = 0; i < win->_maxy; i++) |
| win->_y[i] = (mypar->_y[j++]) + parx; |
| |
| win->_pary = pary; |
| win->_parx = parx; |
| |
| return OK; |
| } |
| |
| WINDOW *dupwin(WINDOW *win) |
| { |
| WINDOW *new; |
| chtype *ptr, *ptr1; |
| int nlines, ncols, begy, begx, i; |
| |
| if (!win) |
| return (WINDOW *)NULL; |
| |
| nlines = win->_maxy; |
| ncols = win->_maxx; |
| begy = win->_begy; |
| begx = win->_begx; |
| |
| if ( !(new = PDC_makenew(nlines, ncols, begy, begx)) |
| || !(new = PDC_makelines(new)) ) |
| return (WINDOW *)NULL; |
| |
| /* copy the contents of win into new */ |
| |
| for (i = 0; i < nlines; i++) |
| { |
| for (ptr = new->_y[i], ptr1 = win->_y[i]; |
| ptr < new->_y[i] + ncols; ptr++, ptr1++) |
| *ptr = *ptr1; |
| |
| new->_firstch[i] = 0; |
| new->_lastch[i] = ncols - 1; |
| } |
| |
| new->_curx = win->_curx; |
| new->_cury = win->_cury; |
| new->_maxy = win->_maxy; |
| new->_maxx = win->_maxx; |
| new->_begy = win->_begy; |
| new->_begx = win->_begx; |
| new->_flags = win->_flags; |
| new->_attrs = win->_attrs; |
| new->_clear = win->_clear; |
| new->_leaveit = win->_leaveit; |
| new->_scroll = win->_scroll; |
| new->_nodelay = win->_nodelay; |
| new->_use_keypad = win->_use_keypad; |
| new->_tmarg = win->_tmarg; |
| new->_bmarg = win->_bmarg; |
| new->_parx = win->_parx; |
| new->_pary = win->_pary; |
| new->_parent = win->_parent; |
| new->_bkgd = win->_bkgd; |
| new->_flags = win->_flags; |
| |
| return new; |
| } |
| |
| WINDOW *resize_window(WINDOW *win, int nlines, int ncols) |
| { |
| WINDOW *new; |
| int i, save_cury, save_curx, new_begy, new_begx; |
| |
| PDC_LOG(("resize_window() - called: nlines %d ncols %d\n", |
| nlines, ncols)); |
| |
| if (!win) |
| return (WINDOW *)NULL; |
| |
| if (win->_flags & _SUBPAD) |
| { |
| if ( !(new = subpad(win->_parent, nlines, ncols, |
| win->_begy, win->_begx)) ) |
| return (WINDOW *)NULL; |
| } |
| else if (win->_flags & _SUBWIN) |
| { |
| if ( !(new = subwin(win->_parent, nlines, ncols, |
| win->_begy, win->_begx)) ) |
| return (WINDOW *)NULL; |
| } |
| else |
| { |
| if (win == SP->slk_winptr) |
| { |
| new_begy = SP->lines - SP->slklines; |
| new_begx = 0; |
| } |
| else |
| { |
| new_begy = win->_begy; |
| new_begx = win->_begx; |
| } |
| |
| if ( !(new = PDC_makenew(nlines, ncols, new_begy, new_begx)) ) |
| return (WINDOW *)NULL; |
| } |
| |
| save_curx = min(win->_curx, new->_maxx); |
| save_cury = min(win->_cury, new->_maxy); |
| |
| if (!(win->_flags & (_SUBPAD|_SUBWIN))) |
| { |
| if ( !(new = PDC_makelines(new)) ) |
| return (WINDOW *)NULL; |
| |
| werase(new); |
| |
| copywin(win, new, 0, 0, 0, 0, min(win->_maxy, new->_maxy) - 1, |
| min(win->_maxx, new->_maxx) - 1, FALSE); |
| |
| for (i = 0; i < win->_maxy && win->_y[i]; i++) |
| if (win->_y[i]) |
| free(win->_y[i]); |
| } |
| |
| new->_flags = win->_flags; |
| new->_attrs = win->_attrs; |
| new->_clear = win->_clear; |
| new->_leaveit = win->_leaveit; |
| new->_scroll = win->_scroll; |
| new->_nodelay = win->_nodelay; |
| new->_use_keypad = win->_use_keypad; |
| new->_tmarg = (win->_tmarg > new->_maxy - 1) ? 0 : win->_tmarg; |
| new->_bmarg = (win->_bmarg == win->_maxy - 1) ? |
| new->_maxy - 1 : min(win->_bmarg, (new->_maxy - 1)); |
| new->_parent = win->_parent; |
| new->_immed = win->_immed; |
| new->_sync = win->_sync; |
| new->_bkgd = win->_bkgd; |
| |
| new->_curx = save_curx; |
| new->_cury = save_cury; |
| |
| free(win->_firstch); |
| free(win->_lastch); |
| free(win->_y); |
| |
| *win = *new; |
| free(new); |
| |
| return win; |
| } |
| |
| int wresize(WINDOW *win, int nlines, int ncols) |
| { |
| return (resize_window(win, nlines, ncols) ? OK : ERR); |
| } |
| |
| void wsyncup(WINDOW *win) |
| { |
| WINDOW *tmp; |
| |
| PDC_LOG(("wsyncup() - called\n")); |
| |
| for (tmp = win; tmp; tmp = tmp->_parent) |
| touchwin(tmp); |
| } |
| |
| int syncok(WINDOW *win, bool bf) |
| { |
| PDC_LOG(("syncok() - called\n")); |
| |
| if (!win) |
| return ERR; |
| |
| win->_sync = bf; |
| |
| return OK; |
| } |
| |
| void wcursyncup(WINDOW *win) |
| { |
| WINDOW *tmp; |
| |
| PDC_LOG(("wcursyncup() - called\n")); |
| |
| for (tmp = win; tmp && tmp->_parent; tmp = tmp->_parent) |
| wmove(tmp->_parent, tmp->_pary + tmp->_cury, tmp->_parx + tmp->_curx); |
| } |
| |
| void wsyncdown(WINDOW *win) |
| { |
| WINDOW *tmp; |
| |
| PDC_LOG(("wsyncdown() - called\n")); |
| |
| for (tmp = win; tmp; tmp = tmp->_parent) |
| { |
| if (is_wintouched(tmp)) |
| { |
| touchwin(win); |
| break; |
| } |
| } |
| } |
