4ab8a24fa9
This is a historical behaviour that needs fixing If any terminal does scroll when drawing in the lowest right hand cell of the terminal then an entry should be made in the terminfo database (currently there is no standard code) to state that and define __SCROLLWIN as before. Fixes PR# 30978.
446 lines
11 KiB
C
446 lines
11 KiB
C
/* $NetBSD: newwin.c,v 1.53 2018/10/05 11:59:05 roy Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1981, 1993, 1994
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)newwin.c 8.3 (Berkeley) 7/27/94";
|
|
#else
|
|
__RCSID("$NetBSD: newwin.c,v 1.53 2018/10/05 11:59:05 roy Exp $");
|
|
#endif
|
|
#endif /* not lint */
|
|
|
|
#include <stdlib.h>
|
|
|
|
#include "curses.h"
|
|
#include "curses_private.h"
|
|
|
|
|
|
static WINDOW *__makenew(SCREEN *screen, int nlines, int ncols, int by,
|
|
int bx, int sub, int ispad);
|
|
static WINDOW *__subwin(WINDOW *orig, int nlines, int ncols, int by, int bx,
|
|
int ispad);
|
|
|
|
/*
|
|
* derwin --
|
|
* Create a new window in the same manner as subwin but (by, bx)
|
|
* are relative to the origin of window orig instead of absolute.
|
|
*/
|
|
WINDOW *
|
|
derwin(WINDOW *orig, int nlines, int ncols, int by, int bx)
|
|
{
|
|
|
|
return __subwin(orig, nlines, ncols, orig->begy + by, orig->begx + bx,
|
|
FALSE);
|
|
}
|
|
|
|
/*
|
|
* subpad --
|
|
* Create a new pad in the same manner as subwin but (by, bx)
|
|
* are relative to the origin of window orig instead of absolute.
|
|
*/
|
|
WINDOW *
|
|
subpad(WINDOW *orig, int nlines, int ncols, int by, int bx)
|
|
{
|
|
|
|
return __subwin(orig, nlines, ncols, orig->begy + by, orig->begx + bx,
|
|
TRUE);
|
|
}
|
|
|
|
/*
|
|
* dupwin --
|
|
* Create a copy of the given window.
|
|
*/
|
|
WINDOW *
|
|
dupwin(WINDOW *win)
|
|
{
|
|
WINDOW *new_one;
|
|
|
|
if ((new_one = __newwin(_cursesi_screen, win->maxy, win->maxx,
|
|
win->begy, win->begx, FALSE,
|
|
win == stdscr ? TRUE : FALSE)) == NULL)
|
|
return NULL;
|
|
|
|
overwrite(win, new_one);
|
|
return new_one;
|
|
}
|
|
|
|
/*
|
|
* newwin --
|
|
* Allocate space for and set up defaults for a new window.
|
|
*/
|
|
WINDOW *
|
|
newwin(int nlines, int ncols, int by, int bx)
|
|
{
|
|
|
|
return __newwin(_cursesi_screen, nlines, ncols, by, bx, FALSE, FALSE);
|
|
}
|
|
|
|
/*
|
|
* newpad --
|
|
* Allocate space for and set up defaults for a new pad.
|
|
*/
|
|
WINDOW *
|
|
newpad(int nlines, int ncols)
|
|
{
|
|
|
|
if (nlines < 1 || ncols < 1)
|
|
return NULL;
|
|
return __newwin(_cursesi_screen, nlines, ncols, 0, 0, TRUE, FALSE);
|
|
}
|
|
|
|
WINDOW *
|
|
__newwin(SCREEN *screen, int nlines, int ncols, int by, int bx, int ispad,
|
|
int isstdscr)
|
|
{
|
|
WINDOW *win;
|
|
__LINE *lp;
|
|
int i, j;
|
|
int ry, maxy, maxx;
|
|
__LDATA *sp;
|
|
|
|
if (by < 0 || bx < 0)
|
|
return NULL;
|
|
|
|
if (isstdscr) {
|
|
ry = __rippedlines(screen, -1);
|
|
by += __rippedlines(screen, 1);
|
|
} else
|
|
ry = 0;
|
|
|
|
maxy = nlines > 0 ? nlines : LINES - by - ry + nlines;
|
|
maxx = ncols > 0 ? ncols : COLS - bx + ncols;
|
|
|
|
if ((win = __makenew(screen, maxy, maxx, by, bx, 0, ispad)) == NULL)
|
|
return NULL;
|
|
|
|
win->bch = ' ';
|
|
if (__using_color)
|
|
win->battr = __default_color;
|
|
else
|
|
win->battr = 0;
|
|
win->nextp = win;
|
|
win->ch_off = 0;
|
|
win->orig = NULL;
|
|
win->reqy = nlines;
|
|
win->reqx = ncols;
|
|
|
|
#ifdef DEBUG
|
|
__CTRACE(__CTRACE_WINDOW, "newwin: win->ch_off = %d\n", win->ch_off);
|
|
#endif
|
|
|
|
for (i = 0; i < maxy; i++) {
|
|
lp = win->alines[i];
|
|
if (ispad)
|
|
lp->flags = __ISDIRTY;
|
|
else
|
|
lp->flags = 0;
|
|
for (sp = lp->line, j = 0; j < maxx; j++, sp++) {
|
|
sp->attr = 0;
|
|
#ifndef HAVE_WCHAR
|
|
sp->ch = win->bch;
|
|
#else
|
|
sp->ch = (wchar_t)btowc((int) win->bch);
|
|
sp->nsp = NULL;
|
|
SET_WCOL(*sp, 1);
|
|
#endif /* HAVE_WCHAR */
|
|
}
|
|
lp->hash = __hash((char *)(void *)lp->line,
|
|
(size_t)(ncols * __LDATASIZE));
|
|
}
|
|
return (win);
|
|
}
|
|
|
|
WINDOW *
|
|
subwin(WINDOW *orig, int nlines, int ncols, int by, int bx)
|
|
{
|
|
|
|
return __subwin(orig, nlines, ncols, by, bx, FALSE);
|
|
}
|
|
|
|
static WINDOW *
|
|
__subwin(WINDOW *orig, int nlines, int ncols, int by, int bx, int ispad)
|
|
{
|
|
int i;
|
|
__LINE *lp;
|
|
WINDOW *win;
|
|
int maxy, maxx;
|
|
|
|
#ifdef DEBUG
|
|
__CTRACE(__CTRACE_WINDOW, "subwin: (%p, %d, %d, %d, %d, %d)\n",
|
|
orig, nlines, ncols, by, bx, ispad);
|
|
#endif
|
|
if (orig == NULL)
|
|
return NULL;
|
|
|
|
/* Make sure window fits inside the original one. */
|
|
maxy = nlines > 0 ? nlines : orig->maxy + orig->begy - by + nlines;
|
|
maxx = ncols > 0 ? ncols : orig->maxx + orig->begx - bx + ncols;
|
|
if (by < orig->begy || bx < orig->begx
|
|
|| by + maxy > orig->maxy + orig->begy
|
|
|| bx + maxx > orig->maxx + orig->begx)
|
|
return NULL;
|
|
if ((win = __makenew(_cursesi_screen, maxy, maxx,
|
|
by, bx, 1, ispad)) == NULL)
|
|
return NULL;
|
|
win->bch = orig->bch;
|
|
win->battr = orig->battr;
|
|
win->reqy = nlines;
|
|
win->reqx = ncols;
|
|
win->nextp = orig->nextp;
|
|
orig->nextp = win;
|
|
win->orig = orig;
|
|
|
|
/* Initialize flags here so that refresh can also use __set_subwin. */
|
|
for (lp = win->lspace, i = 0; i < win->maxy; i++, lp++)
|
|
lp->flags = 0;
|
|
__set_subwin(orig, win);
|
|
return win;
|
|
}
|
|
/*
|
|
* This code is shared with mvwin().
|
|
*/
|
|
void
|
|
__set_subwin(WINDOW *orig, WINDOW *win)
|
|
{
|
|
int i;
|
|
__LINE *lp, *olp;
|
|
#ifdef HAVE_WCHAR
|
|
__LDATA *cp;
|
|
int j;
|
|
nschar_t *np;
|
|
#endif /* HAVE_WCHAR */
|
|
|
|
win->ch_off = win->begx - orig->begx;
|
|
/* Point line pointers to line space. */
|
|
for (lp = win->lspace, i = 0; i < win->maxy; i++, lp++) {
|
|
win->alines[i] = lp;
|
|
olp = orig->alines[i + win->begy - orig->begy];
|
|
#ifdef DEBUG
|
|
lp->sentinel = SENTINEL_VALUE;
|
|
#endif
|
|
lp->line = &olp->line[win->ch_off];
|
|
lp->firstchp = &olp->firstch;
|
|
lp->lastchp = &olp->lastch;
|
|
#ifndef HAVE_WCHAR
|
|
lp->hash = __hash((char *)(void *)lp->line,
|
|
(size_t)(win->maxx * __LDATASIZE));
|
|
#else
|
|
for (cp = lp->line, j = 0; j < win->maxx; j++, cp++) {
|
|
lp->hash = __hash_more( &cp->ch,
|
|
sizeof( wchar_t ), lp->hash );
|
|
lp->hash = __hash_more( &cp->attr,
|
|
sizeof( wchar_t ), lp->hash );
|
|
if ( cp->nsp ) {
|
|
np = cp->nsp;
|
|
while ( np ) {
|
|
lp->hash = __hash_more( &np->ch,
|
|
sizeof( wchar_t ), lp->hash );
|
|
np = np->next;
|
|
}
|
|
}
|
|
}
|
|
#endif /* HAVE_WCHAR */
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
__CTRACE(__CTRACE_WINDOW, "__set_subwin: win->ch_off = %d\n",
|
|
win->ch_off);
|
|
#endif
|
|
}
|
|
/*
|
|
* __makenew --
|
|
* Set up a window buffer and returns a pointer to it.
|
|
*/
|
|
static WINDOW *
|
|
__makenew(SCREEN *screen, int nlines, int ncols, int by, int bx, int sub,
|
|
int ispad)
|
|
{
|
|
WINDOW *win;
|
|
__LINE *lp;
|
|
struct __winlist *wlp, *wlp2;
|
|
int i;
|
|
|
|
|
|
#ifdef DEBUG
|
|
__CTRACE(__CTRACE_WINDOW, "makenew: (%d, %d, %d, %d)\n",
|
|
nlines, ncols, by, bx);
|
|
#endif
|
|
if (nlines <= 0 || ncols <= 0)
|
|
return NULL;
|
|
|
|
if ((win = malloc(sizeof(WINDOW))) == NULL)
|
|
return NULL;
|
|
#ifdef DEBUG
|
|
__CTRACE(__CTRACE_WINDOW, "makenew: win = %p\n", win);
|
|
#endif
|
|
win->fp = NULL;
|
|
|
|
/* Set up line pointer array and line space. */
|
|
if ((win->alines = malloc(nlines * sizeof(__LINE *))) == NULL) {
|
|
free(win);
|
|
return NULL;
|
|
}
|
|
if ((win->lspace = malloc(nlines * sizeof(__LINE))) == NULL) {
|
|
free(win->alines);
|
|
free(win);
|
|
return NULL;
|
|
}
|
|
/* Don't allocate window and line space if it's a subwindow */
|
|
if (sub)
|
|
win->wspace = NULL;
|
|
else {
|
|
/*
|
|
* Allocate window space in one chunk.
|
|
*/
|
|
if ((win->wspace =
|
|
malloc(ncols * nlines * sizeof(__LDATA))) == NULL) {
|
|
free(win->lspace);
|
|
free(win->alines);
|
|
free(win);
|
|
return NULL;
|
|
}
|
|
/*
|
|
* Append window to window list.
|
|
*/
|
|
if ((wlp = malloc(sizeof(struct __winlist))) == NULL) {
|
|
free(win->wspace);
|
|
free(win->lspace);
|
|
free(win->alines);
|
|
free(win);
|
|
return NULL;
|
|
}
|
|
wlp->winp = win;
|
|
wlp->nextp = NULL;
|
|
if (screen->winlistp == NULL)
|
|
screen->winlistp = wlp;
|
|
else {
|
|
wlp2 = screen->winlistp;
|
|
while (wlp2->nextp != NULL)
|
|
wlp2 = wlp2->nextp;
|
|
wlp2->nextp = wlp;
|
|
}
|
|
/*
|
|
* Point line pointers to line space, and lines themselves into
|
|
* window space.
|
|
*/
|
|
for (lp = win->lspace, i = 0; i < nlines; i++, lp++) {
|
|
win->alines[i] = lp;
|
|
lp->line = &win->wspace[i * ncols];
|
|
#ifdef DEBUG
|
|
lp->sentinel = SENTINEL_VALUE;
|
|
#endif
|
|
lp->firstchp = &lp->firstch;
|
|
lp->lastchp = &lp->lastch;
|
|
if (ispad) {
|
|
lp->firstch = 0;
|
|
lp->lastch = ncols;
|
|
} else {
|
|
lp->firstch = ncols;
|
|
lp->lastch = 0;
|
|
}
|
|
}
|
|
}
|
|
#ifdef DEBUG
|
|
__CTRACE(__CTRACE_WINDOW, "makenew: ncols = %d\n", ncols);
|
|
#endif
|
|
win->screen = screen;
|
|
win->cury = win->curx = 0;
|
|
win->maxy = nlines;
|
|
win->maxx = ncols;
|
|
win->reqy = nlines;
|
|
win->reqx = ncols;
|
|
|
|
win->begy = by;
|
|
win->begx = bx;
|
|
win->flags = (__IDLINE | __IDCHAR);
|
|
win->delay = -1;
|
|
win->wattr = 0;
|
|
#ifdef HAVE_WCHAR
|
|
win->bnsp = NULL;
|
|
SET_BGWCOL(*win, 1);
|
|
#endif /* HAVE_WCHAR */
|
|
win->scr_t = 0;
|
|
win->scr_b = win->maxy - 1;
|
|
if (ispad) {
|
|
win->flags |= __ISPAD;
|
|
win->pbegy = 0;
|
|
win->pbegx = 0;
|
|
win->sbegy = 0;
|
|
win->sbegx = 0;
|
|
win->smaxy = 0;
|
|
win->smaxx = 0;
|
|
} else
|
|
__swflags(win);
|
|
#ifdef DEBUG
|
|
__CTRACE(__CTRACE_WINDOW, "makenew: win->wattr = %08x\n", win->wattr);
|
|
__CTRACE(__CTRACE_WINDOW, "makenew: win->flags = %#.4x\n", win->flags);
|
|
__CTRACE(__CTRACE_WINDOW, "makenew: win->maxy = %d\n", win->maxy);
|
|
__CTRACE(__CTRACE_WINDOW, "makenew: win->maxx = %d\n", win->maxx);
|
|
__CTRACE(__CTRACE_WINDOW, "makenew: win->begy = %d\n", win->begy);
|
|
__CTRACE(__CTRACE_WINDOW, "makenew: win->begx = %d\n", win->begx);
|
|
__CTRACE(__CTRACE_WINDOW, "makenew: win->scr_t = %d\n", win->scr_t);
|
|
__CTRACE(__CTRACE_WINDOW, "makenew: win->scr_b = %d\n", win->scr_b);
|
|
#endif
|
|
return win;
|
|
}
|
|
|
|
void
|
|
__swflags(WINDOW *win)
|
|
{
|
|
|
|
win->flags &= ~(__ENDLINE | __FULLWIN | __SCROLLWIN | __LEAVEOK);
|
|
if (win->begx + win->maxx == COLS && !(win->flags & __ISPAD)) {
|
|
win->flags |= __ENDLINE;
|
|
if (win->begx == 0 && win->maxy == LINES && win->begy == 0)
|
|
win->flags |= __FULLWIN;
|
|
/*
|
|
* Enable this if we have a terminfo setting which claims
|
|
* terminal will scroll. Currently there is none.
|
|
*/
|
|
#if 0
|
|
if (win->begy + win->maxy == LINES)
|
|
win->flags |= __SCROLLWIN;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/*
|
|
* is_pad --
|
|
* Return true if window was created by newpad.
|
|
*/
|
|
bool
|
|
is_pad(const WINDOW *win)
|
|
{
|
|
|
|
return win->flags & __ISPAD ? true : false;
|
|
}
|