+++ /dev/null
-/****************************************************************************
- * Copyright (c) 1998 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 *
- * "Software"), to deal in the Software without restriction, including *
- * without limitation the rights to use, copy, modify, merge, publish, *
- * distribute, distribute with modifications, sublicense, and/or sell *
- * copies of the Software, and to permit persons to whom the Software is *
- * furnished to do so, subject to the following conditions: *
- * *
- * The above copyright notice and this permission notice shall be included *
- * in all copies or substantial portions of the Software. *
- * *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
- * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
- * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
- * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
- * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
- * *
- * Except as contained in this notice, the name(s) of the above copyright *
- * holders shall not be used in advertising or otherwise to promote the *
- * sale, use or other dealings in this Software without prior written *
- * authorization. *
- ****************************************************************************/
-
-/****************************************************************************
- * Author: Thomas E. Dickey <dickey@clark.net> 1996,1997 *
- ****************************************************************************/
-
-#include <curses.priv.h>
-#include <term.h>
-
-MODULE_ID("$Id: wresize.c,v 1.9 1998/02/11 12:13:54 tom Exp $")
-
-/*
- * Reallocate a curses WINDOW struct to either shrink or grow to the specified
- * new lines/columns. If it grows, the new character cells are filled with
- * blanks. The application is responsible for repainting the blank area.
- */
-
-static void *doalloc(void *p, size_t n)
-{
- if (p == 0)
- p = malloc(n);
- else
- p = realloc(p, n);
- return p;
-}
-
-#define DOALLOC(p,t,n) (t *)doalloc(p, sizeof(t)*(n))
-#define ld_ALLOC(p,n) DOALLOC(p,struct ldat,n)
-#define c_ALLOC(p,n) DOALLOC(p,chtype,n)
-
-int
-wresize(WINDOW *win, int ToLines, int ToCols)
-{
- 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)
- _tracedump("...before", win);
- }
-#endif
-
- if (!win || --ToLines < 0 || --ToCols < 0)
- returnCode(ERR);
-
- 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 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));
- }
-
- 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];
- }
- }
- }
-
- /*
- * 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;
- }
- }
- }
-
- /*
- * 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);
-#endif
- returnCode(OK);
-}
projects / ncurses.git / blobdiff