83f75bfeb9
Coverity complains and that (unfortunately) means that some compiler might take advantage of the same fact. Change-Id: I59aff77820c524fa5a0fcb251c1268da475101fb Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Found-by: Coverity Scan #1261105 Reviewed-on: https://review.coreboot.org/17835 Tested-by: build bot (Jenkins) Reviewed-by: Martin Roth <martinroth@google.com>
564 lines
16 KiB
C
564 lines
16 KiB
C
/* 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, j, k;
|
|
|
|
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;
|
|
|
|
j = begy - orig->_begy;
|
|
k = begx - orig->_begx;
|
|
|
|
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;
|
|
}
|
|
}
|
|
}
|