/****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc. *
+ * Copyright (c) 1998,1999,2000 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
#include <curses.priv.h>
-MODULE_ID("$Id: wresize.c,v 1.12 1999/02/27 18:57:31 tom Exp $")
+MODULE_ID("$Id: wresize.c,v 1.16 2000/03/05 00:14:35 tom Exp $")
/*
* Reallocate a curses WINDOW struct to either shrink or grow to the specified
int
wresize(WINDOW *win, int ToLines, int ToCols)
{
- register int row;
- int size_x, size_y;
- struct ldat *pline;
- chtype blank;
+ register int row;
+ int size_x, size_y;
+ struct ldat *pline;
+ chtype blank;
#ifdef TRACE
- T((T_CALLED("wresize(%p,%d,%d)"), win, ToLines, ToCols));
- if (win) {
- TR(TRACE_UPDATE, ("...beg (%d, %d), max(%d,%d), reg(%d,%d)",
- win->_begy, win->_begx,
- win->_maxy, win->_maxx,
- win->_regtop, win->_regbottom));
- if (_nc_tracing & TRACE_UPDATE)
+ T((T_CALLED("wresize(%p,%d,%d)"), win, ToLines, ToCols));
+ if (win) {
+ TR(TRACE_UPDATE, ("...beg (%d, %d), max(%d,%d), reg(%d,%d)",
+ win->_begy, win->_begx,
+ win->_maxy, win->_maxx,
+ win->_regtop, win->_regbottom));
+ if (_nc_tracing & TRACE_UPDATE)
_tracedump("...before", win);
- }
+ }
#endif
- if (!win || --ToLines < 0 || --ToCols < 0)
- returnCode(ERR);
+ if (!win || --ToLines < 0 || --ToCols < 0)
+ returnCode(ERR);
- size_x = win->_maxx;
- size_y = win->_maxy;
+ size_x = win->_maxx;
+ size_y = win->_maxy;
- if (ToLines == size_y
- && ToCols == size_x)
- returnCode(OK);
-
- pline = (win->_flags & _SUBWIN) ? win->_parent->_line : 0;
+ if (ToLines == size_y
+ && ToCols == size_x)
+ returnCode(OK);
+ if ((win->_flags & _SUBWIN)) {
/*
- * If the number of lines has changed, adjust the size of the overall
- * vector:
+ * Check if the new limits will fit into the parent window's size. If
+ * not, do not resize. We could adjust the location of the subwindow,
+ * but the application may not like that.
*/
- if (ToLines != size_y) {
- if (! (win->_flags & _SUBWIN)) {
- for (row = ToLines+1; row <= size_y; row++)
- free((char *)(win->_line[row].text));
- }
-
- win->_line = ld_ALLOC(win->_line, ToLines+1);
- if (win->_line == 0)
- returnCode(ERR);
-
- for (row = size_y+1; row <= ToLines; row++) {
- win->_line[row].text = 0;
- win->_line[row].firstchar = 0;
- win->_line[row].lastchar = ToCols;
- if ((win->_flags & _SUBWIN)) {
- win->_line[row].text =
- &pline[win->_begy + row].text[win->_begx];
- }
- }
+ if (win->_pary + ToLines > win->_parent->_maxy
+ || win->_parx + ToCols > win->_parent->_maxx) {
+ returnCode(ERR);
}
-
- /*
- * Adjust the width of the columns:
- */
- blank = _nc_background(win);
- for (row = 0; row <= ToLines; row++) {
- chtype *s = win->_line[row].text;
- int begin = (s == 0) ? 0 : size_x + 1;
- int end = ToCols;
-
- if_USE_SCROLL_HINTS(win->_line[row].oldindex = row);
-
- if (ToCols != size_x || s == 0) {
- if (! (win->_flags & _SUBWIN)) {
- win->_line[row].text = s = c_ALLOC(s, ToCols+1);
- if (win->_line[row].text == 0)
- returnCode(ERR);
- } else if (s == 0) {
- win->_line[row].text = s =
- &pline[win->_begy + row].text[win->_begx];
- }
-
- if (end >= begin) { /* growing */
- if (win->_line[row].firstchar < begin)
- win->_line[row].firstchar = begin;
- win->_line[row].lastchar = ToCols;
- do {
- s[end] = blank;
- } while (--end >= begin);
- } else { /* shrinking */
- win->_line[row].firstchar = 0;
- win->_line[row].lastchar = ToCols;
- }
- }
+ pline = win->_parent->_line;
+ } else {
+ pline = 0;
+ }
+
+ /*
+ * If the number of lines has changed, adjust the size of the overall
+ * vector:
+ */
+ if (ToLines != size_y) {
+ if (!(win->_flags & _SUBWIN)) {
+ for (row = ToLines + 1; row <= size_y; row++)
+ free((char *) (win->_line[row].text));
}
- /*
- * Finally, adjust the parameters showing screen size and cursor
- * position:
- */
- win->_maxx = ToCols;
- win->_maxy = ToLines;
-
- if (win->_regtop > win->_maxy)
- win->_regtop = win->_maxy;
- if (win->_regbottom > win->_maxy
- || win->_regbottom == size_y)
- win->_regbottom = win->_maxy;
-
- if (win->_curx > win->_maxx)
- win->_curx = win->_maxx;
- if (win->_cury > win->_maxy)
- win->_cury = win->_maxy;
+ win->_line = ld_ALLOC(win->_line, ToLines + 1);
+ if (win->_line == 0)
+ returnCode(ERR);
+
+ for (row = size_y + 1; row <= ToLines; row++) {
+ win->_line[row].text = 0;
+ win->_line[row].firstchar = 0;
+ win->_line[row].lastchar = ToCols;
+ if ((win->_flags & _SUBWIN)) {
+ win->_line[row].text =
+ &pline[win->_pary + row].text[win->_parx];
+ }
+ }
+ }
+
+ /*
+ * Adjust the width of the columns:
+ */
+ blank = _nc_background(win);
+ for (row = 0; row <= ToLines; row++) {
+ chtype *s = win->_line[row].text;
+ int begin = (s == 0) ? 0 : size_x + 1;
+ int end = ToCols;
+
+ if_USE_SCROLL_HINTS(win->_line[row].oldindex = row);
+
+ if (ToCols != size_x || s == 0) {
+ if (!(win->_flags & _SUBWIN)) {
+ win->_line[row].text = s = c_ALLOC(s, ToCols + 1);
+ if (win->_line[row].text == 0)
+ returnCode(ERR);
+ } else if (s == 0) {
+ win->_line[row].text = s =
+ &pline[win->_pary + row].text[win->_parx];
+ }
+
+ if (end >= begin) { /* growing */
+ if (win->_line[row].firstchar < begin)
+ win->_line[row].firstchar = begin;
+ win->_line[row].lastchar = ToCols;
+ do {
+ s[end] = blank;
+ } while (--end >= begin);
+ } else { /* shrinking */
+ win->_line[row].firstchar = 0;
+ win->_line[row].lastchar = ToCols;
+ }
+ }
+ }
+
+ /*
+ * Finally, adjust the parameters showing screen size and cursor
+ * position:
+ */
+ win->_maxx = ToCols;
+ win->_maxy = ToLines;
+
+ if (win->_regtop > win->_maxy)
+ win->_regtop = win->_maxy;
+ if (win->_regbottom > win->_maxy
+ || win->_regbottom == size_y)
+ win->_regbottom = win->_maxy;
+
+ if (win->_curx > win->_maxx)
+ win->_curx = win->_maxx;
+ if (win->_cury > win->_maxy)
+ win->_cury = win->_maxy;
#ifdef TRACE
- TR(TRACE_UPDATE, ("...beg (%d, %d), max(%d,%d), reg(%d,%d)",
- win->_begy, win->_begx,
- win->_maxy, win->_maxx,
- win->_regtop, win->_regbottom));
- if (_nc_tracing & TRACE_UPDATE)
- _tracedump("...after:", win);
+ TR(TRACE_UPDATE, ("...beg (%d, %d), max(%d,%d), reg(%d,%d)",
+ win->_begy, win->_begx,
+ win->_maxy, win->_maxx,
+ win->_regtop, win->_regbottom));
+ if (_nc_tracing & TRACE_UPDATE)
+ _tracedump("...after:", win);
#endif
- returnCode(OK);
+ returnCode(OK);
}
projects / ncurses.git / blobdiff