X-Git-Url: http://ncurses.scripts.mit.edu/?a=blobdiff_plain;f=ncurses%2Flib_pad.c;fp=ncurses%2Flib_pad.c;h=0000000000000000000000000000000000000000;hb=0eb88fc5281804773e2a0c7a488a4452463535ce;hp=6e797aef04b6008ba5eb58e9b63ee9ebeaa8635f;hpb=661078ddbde3ce0f3b06e95642fbb9b5fef7dca1;p=ncurses.git diff --git a/ncurses/lib_pad.c b/ncurses/lib_pad.c deleted file mode 100644 index 6e797aef..00000000 --- a/ncurses/lib_pad.c +++ /dev/null @@ -1,286 +0,0 @@ -/**************************************************************************** - * 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: Zeyd M. Ben-Halim 1992,1995 * - * and: Eric S. Raymond * - ****************************************************************************/ - - -/* - * lib_pad.c - * newpad -- create a new pad - * pnoutrefresh -- refresh a pad, no update - * pechochar -- add a char to a pad and refresh - */ - -#include - -MODULE_ID("$Id: lib_pad.c,v 1.25 1998/02/11 12:13:55 tom Exp $") - -WINDOW *newpad(int l, int c) -{ -WINDOW *win; -chtype *ptr; -int i; - - T((T_CALLED("newpad(%d, %d)"), l, c)); - - if (l <= 0 || c <= 0) - returnWin(0); - - if ((win = _nc_makenew(l,c,0,0,_ISPAD)) == NULL) - returnWin(0); - - for (i = 0; i < l; i++) { - if_USE_SCROLL_HINTS(win->_line[i].oldindex = _NEWINDEX); - if ((win->_line[i].text = typeCalloc(chtype, ((size_t)c))) == 0) { - _nc_freewin(win); - returnWin(0); - } - for (ptr = win->_line[i].text; ptr < win->_line[i].text + c; ) - *ptr++ = ' '; - } - - returnWin(win); -} - -WINDOW *subpad(WINDOW *orig, int l, int c, int begy, int begx) -{ -WINDOW *win = (WINDOW *)0; - - T((T_CALLED("subpad(%d, %d)"), l, c)); - - if (orig) { - if (!(orig->_flags & _ISPAD) || ((win = derwin(orig, l, c, begy, begx)) == NULL)) - returnWin(0); - } - returnWin(win); -} - -int prefresh(WINDOW *win, int pminrow, int pmincol, - int sminrow, int smincol, int smaxrow, int smaxcol) -{ - T((T_CALLED("prefresh()"))); - if (pnoutrefresh(win, pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol) != ERR - && doupdate() != ERR) { - returnCode(OK); - } - returnCode(ERR); -} - -int pnoutrefresh(WINDOW *win, int pminrow, int pmincol, - int sminrow, int smincol, int smaxrow, int smaxcol) -{ -const int my_len = 2; /* parameterize the threshold for hardscroll */ -short i, j; -short m, n; -short pmaxrow; -short pmaxcol; -short displaced; -bool wide; - - T((T_CALLED("pnoutrefresh(%p, %d, %d, %d, %d, %d, %d)"), - win, pminrow, pmincol, sminrow, smincol, smaxrow, smaxcol)); - - if (win == 0) - returnCode(ERR); - - if (!(win->_flags & _ISPAD)) - returnCode(ERR); - - /* negative values are interpreted as zero */ - if (pminrow < 0) pminrow = 0; - if (pmincol < 0) pmincol = 0; - if (sminrow < 0) sminrow = 0; - if (smincol < 0) smincol = 0; - - pmaxrow = pminrow + smaxrow - sminrow; - pmaxcol = pmincol + smaxcol - smincol; - - T((" pminrow + smaxrow - sminrow %d, win->_maxy %d", pmaxrow, win->_maxy)); - T((" pmincol + smaxcol - smincol %d, win->_maxx %d", pmaxcol, win->_maxx)); - - /* - * Trim the caller's screen size back to the actual limits. - */ - if (pmaxrow > win->_maxy) { - smaxrow -= (pmaxrow - win->_maxy); - pmaxrow = pminrow + smaxrow - sminrow; - } - if (pmaxcol > win->_maxx) { - smaxcol -= (pmaxcol - win->_maxx); - pmaxcol = pmincol + smaxcol - smincol; - } - - if (smaxrow > screen_lines - || smaxcol > screen_columns - || sminrow > smaxrow - || smincol > smaxcol) - returnCode(ERR); - - T(("pad being refreshed")); - - if (win->_pad._pad_y >= 0) { - displaced = pminrow - win->_pad._pad_y - -(sminrow - win->_pad._pad_top); - T(("pad being shifted by %d line(s)", displaced)); - } else - displaced = 0; - - /* - * For pure efficiency, we'd want to transfer scrolling information - * from the pad to newscr whenever the window is wide enough that - * its update will dominate the cost of the update for the horizontal - * band of newscr that it occupies. Unfortunately, this threshold - * tends to be complex to estimate, and in any case scrolling the - * whole band and rewriting the parts outside win's image would look - * really ugly. So. What we do is consider the pad "wide" if it - * either (a) occupies the whole width of newscr, or (b) occupies - * all but at most one column on either vertical edge of the screen - * (this caters to fussy people who put boxes around full-screen - * windows). Note that changing this formula will not break any code, - * merely change the costs of various update cases. - */ - wide = (smincol < my_len && smaxcol > (newscr->_maxx - my_len)); - - for (i = pminrow, m = sminrow + win->_yoffset; - i <= pmaxrow && m <= newscr->_maxy; - i++, m++) { - register struct ldat *nline = &newscr->_line[m]; - register struct ldat *oline = &win->_line[i]; - - for (j = pmincol, n = smincol; j <= pmaxcol; j++, n++) { - if (oline->text[j] != nline->text[n]) { - nline->text[n] = oline->text[j]; - - if (nline->firstchar == _NOCHANGE) - nline->firstchar = nline->lastchar = n; - else if (n < nline->firstchar) - nline->firstchar = n; - else if (n > nline->lastchar) - nline->lastchar = n; - } - } - -#if USE_SCROLL_HINTS - if (wide) { - int nind = m + displaced; - if (oline->oldindex < 0 - || nind < sminrow - || nind > smaxrow) { - nind = _NEWINDEX; - } else if (displaced) { - register struct ldat *pline = &curscr->_line[nind]; - for (j = 0; j <= my_len; j++) { - int k = newscr->_maxx - j; - if (pline->text[j] != nline->text[j] - || pline->text[k] != nline->text[k]) { - nind = _NEWINDEX; - break; - } - } - } - - nline->oldindex = nind; - } -#endif /* USE_SCROLL_HINTS */ - oline->firstchar = oline->lastchar = _NOCHANGE; - if_USE_SCROLL_HINTS(oline->oldindex = i); - } - - /* - * Clean up debris from scrolling or resizing the pad, so we do not - * accidentally pick up the index value during the next call to this - * procedure. The only rows that should have an index value are those - * that are displayed during this cycle. - */ -#if USE_SCROLL_HINTS - for (i = pminrow-1; (i >= 0) && (win->_line[i].oldindex >= 0); i--) - win->_line[i].oldindex = _NEWINDEX; - for (i = pmaxrow+1; (i <= win->_maxy) && (win->_line[i].oldindex >= 0); i++) - win->_line[i].oldindex = _NEWINDEX; -#endif - - win->_begx = smincol; - win->_begy = sminrow; - - if (win->_clear) { - win->_clear = FALSE; - newscr->_clear = TRUE; - } - - /* - * Use the pad's current position, if it will be visible. - * If not, don't do anything; it's not an error. - */ - if (win->_leaveok == FALSE - && win->_cury >= pminrow - && win->_curx >= pmincol - && win->_cury <= pmaxrow - && win->_curx <= pmaxcol) { - newscr->_cury = win->_cury - pminrow + win->_begy + win->_yoffset; - newscr->_curx = win->_curx - pmincol + win->_begx; - } - win->_flags &= ~_HASMOVED; - - /* - * Update our cache of the line-numbers that we displayed from the pad. - * We will use this on subsequent calls to this function to derive - * values to stuff into 'oldindex[]' -- for scrolling optimization. - */ - win->_pad._pad_y = pminrow; - win->_pad._pad_x = pmincol; - win->_pad._pad_top = sminrow; - win->_pad._pad_left = smincol; - win->_pad._pad_bottom = smaxrow; - win->_pad._pad_right = smaxcol; - - returnCode(OK); -} - -int pechochar(WINDOW *pad, const chtype ch) -{ - T((T_CALLED("pechochar(%p, %s)"), pad, _tracechtype(ch))); - - if (pad == 0) - returnCode(ERR); - - if (!(pad->_flags & _ISPAD)) - returnCode(wechochar(pad,ch)); - - waddch(pad, ch); - prefresh(pad, pad->_pad._pad_y, - pad->_pad._pad_x, - pad->_pad._pad_top, - pad->_pad._pad_left, - pad->_pad._pad_bottom, - pad->_pad._pad_right); - - returnCode(OK); -}