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https://github.com/Aigor44/ncursesw-morphos.git
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f79b52fddd
+ modify nc_tparm.h, adding guards against repeated inclusion, and allowing TPARM_ARG to be overridden. + fix some strict compiler warnings in ncurses library.
298 lines
9.3 KiB
C
298 lines
9.3 KiB
C
/****************************************************************************
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* Copyright (c) 1998-2009,2010 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/****************************************************************************
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* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
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* and: Eric S. Raymond <esr@snark.thyrsus.com> *
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* and: Thomas E. Dickey 1996-on *
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* and: Juergen Pfeifer *
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****************************************************************************/
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/*
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* lib_refresh.c
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*
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* The routines wrefresh() and wnoutrefresh().
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*
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*/
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#include <curses.priv.h>
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MODULE_ID("$Id: lib_refresh.c,v 1.44 2010/12/19 01:22:58 tom Exp $")
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NCURSES_EXPORT(int)
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wrefresh(WINDOW *win)
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{
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int code;
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#if NCURSES_SP_FUNCS
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SCREEN *SP_PARM = _nc_screen_of(win);
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#endif
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T((T_CALLED("wrefresh(%p)"), (void *) win));
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if (win == 0) {
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code = ERR;
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} else if (win == CurScreen(SP_PARM)) {
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CurScreen(SP_PARM)->_clear = TRUE;
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code = NCURSES_SP_NAME(doupdate) (NCURSES_SP_ARG);
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} else if ((code = wnoutrefresh(win)) == OK) {
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if (win->_clear)
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NewScreen(SP_PARM)->_clear = TRUE;
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code = NCURSES_SP_NAME(doupdate) (NCURSES_SP_ARG);
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/*
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* Reset the clearok() flag in case it was set for the special
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* case in hardscroll.c (if we don't reset it here, we'll get 2
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* refreshes because the flag is copied from stdscr to newscr).
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* Resetting the flag shouldn't do any harm, anyway.
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*/
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win->_clear = FALSE;
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}
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returnCode(code);
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}
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NCURSES_EXPORT(int)
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wnoutrefresh(WINDOW *win)
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{
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int limit_x;
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int src_row, src_col;
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int begx;
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int begy;
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int dst_row, dst_col;
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#if USE_SCROLL_HINTS
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bool wide;
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#endif
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#if NCURSES_SP_FUNCS
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SCREEN *SP_PARM = _nc_screen_of(win);
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#endif
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T((T_CALLED("wnoutrefresh(%p)"), (void *) win));
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#ifdef TRACE
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if (USE_TRACEF(TRACE_UPDATE)) {
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_tracedump("...win", win);
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_nc_unlock_global(tracef);
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}
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#endif /* TRACE */
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/*
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* This function will break badly if we try to refresh a pad.
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*/
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if ((win == 0)
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|| (win->_flags & _ISPAD))
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returnCode(ERR);
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/* put them here so "win == 0" won't break our code */
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begx = win->_begx;
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begy = win->_begy;
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NewScreen(SP_PARM)->_nc_bkgd = win->_nc_bkgd;
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WINDOW_ATTRS(NewScreen(SP_PARM)) = WINDOW_ATTRS(win);
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/* merge in change information from all subwindows of this window */
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wsyncdown(win);
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#if USE_SCROLL_HINTS
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/*
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* For pure efficiency, we'd want to transfer scrolling information
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* from the window to newscr whenever the window is wide enough that
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* its update will dominate the cost of the update for the horizontal
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* band of newscr that it occupies. Unfortunately, this threshold
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* tends to be complex to estimate, and in any case scrolling the
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* whole band and rewriting the parts outside win's image would look
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* really ugly. So. What we do is consider the window "wide" if it
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* either (a) occupies the whole width of newscr, or (b) occupies
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* all but at most one column on either vertical edge of the screen
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* (this caters to fussy people who put boxes around full-screen
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* windows). Note that changing this formula will not break any code,
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* merely change the costs of various update cases.
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*/
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wide = (begx <= 1 && win->_maxx >= (NewScreen(SP_PARM)->_maxx - 1));
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#endif
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win->_flags &= ~_HASMOVED;
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/*
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* Microtweaking alert! This double loop is one of the genuine
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* hot spots in the code. Even gcc doesn't seem to do enough
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* common-subexpression chunking to make it really tense,
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* so we'll force the issue.
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*/
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/* limit(dst_col) */
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limit_x = win->_maxx;
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/* limit(src_col) */
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if (limit_x > NewScreen(SP_PARM)->_maxx - begx)
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limit_x = NewScreen(SP_PARM)->_maxx - begx;
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for (src_row = 0, dst_row = begy + win->_yoffset;
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src_row <= win->_maxy && dst_row <= NewScreen(SP_PARM)->_maxy;
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src_row++, dst_row++) {
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struct ldat *nline = &(NewScreen(SP_PARM)->_line[dst_row]);
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struct ldat *oline = &win->_line[src_row];
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if (oline->firstchar != _NOCHANGE) {
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int last_src = oline->lastchar;
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if (last_src > limit_x)
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last_src = limit_x;
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src_col = oline->firstchar;
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dst_col = src_col + begx;
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if_WIDEC({
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int j;
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/*
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* Ensure that we will copy complete multi-column characters
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* on the left-boundary.
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*/
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if (isWidecExt(oline->text[src_col])) {
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j = 1 + dst_col - WidecExt(oline->text[src_col]);
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if (j < 0)
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j = 0;
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if (dst_col > j) {
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src_col -= (dst_col - j);
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dst_col = j;
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}
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}
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/*
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* Ensure that we will copy complete multi-column characters
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* on the right-boundary.
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*/
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j = last_src;
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if (WidecExt(oline->text[j])) {
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++j;
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while (j <= limit_x) {
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if (isWidecBase(oline->text[j])) {
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break;
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} else {
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last_src = j;
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}
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++j;
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}
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}
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});
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if_WIDEC({
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static cchar_t blank = BLANK;
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int last_dst = begx + ((last_src < win->_maxx)
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? last_src
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: win->_maxx);
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int fix_left = dst_col;
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int fix_right = last_dst;
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int j;
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/*
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* Check for boundary cases where we may overwrite part of a
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* multi-column character. For those, wipe the remainder of
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* the character to blanks.
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*/
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j = dst_col;
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if (isWidecExt(nline->text[j])) {
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/*
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* On the left, we only care about multi-column characters
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* that extend into the changed region.
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*/
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fix_left = 1 + j - WidecExt(nline->text[j]);
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if (fix_left < 0)
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fix_left = 0; /* only if cell is corrupt */
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}
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j = last_dst;
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if (WidecExt(nline->text[j]) != 0) {
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/*
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* On the right, any multi-column character is a problem,
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* unless it happens to be contained in the change, and
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* ending at the right boundary of the change. The
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* computation for 'fix_left' accounts for the left-side of
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* this character. Find the end of the character.
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*/
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++j;
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while (j <= NewScreen(SP_PARM)->_maxx &&
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isWidecExt(nline->text[j])) {
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fix_right = j++;
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}
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}
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/*
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* The analysis is simpler if we do the clearing afterwards.
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* Do that now.
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*/
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if (fix_left < dst_col || fix_right > last_dst) {
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for (j = fix_left; j <= fix_right; ++j) {
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nline->text[j] = blank;
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CHANGED_CELL(nline, j);
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}
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}
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});
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/*
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* Copy the changed text.
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*/
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for (; src_col <= last_src; src_col++, dst_col++) {
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if (!CharEq(oline->text[src_col], nline->text[dst_col])) {
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nline->text[dst_col] = oline->text[src_col];
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CHANGED_CELL(nline, dst_col);
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}
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}
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}
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#if USE_SCROLL_HINTS
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if (wide) {
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int oind = oline->oldindex;
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nline->oldindex = ((oind == _NEWINDEX)
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? _NEWINDEX
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: (begy + oind + win->_yoffset));
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}
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#endif /* USE_SCROLL_HINTS */
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oline->firstchar = oline->lastchar = _NOCHANGE;
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if_USE_SCROLL_HINTS(oline->oldindex = src_row);
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}
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if (win->_clear) {
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win->_clear = FALSE;
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NewScreen(SP_PARM)->_clear = TRUE;
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}
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if (!win->_leaveok) {
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NewScreen(SP_PARM)->_cury = (NCURSES_SIZE_T) (win->_cury +
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win->_begy + win->_yoffset);
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NewScreen(SP_PARM)->_curx = (NCURSES_SIZE_T) (win->_curx + win->_begx);
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}
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NewScreen(SP_PARM)->_leaveok = win->_leaveok;
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#ifdef TRACE
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if (USE_TRACEF(TRACE_UPDATE)) {
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_tracedump("newscr", NewScreen(SP_PARM));
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_nc_unlock_global(tracef);
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}
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#endif /* TRACE */
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returnCode(OK);
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}
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