diff options
Diffstat (limited to 'usr/src/lib/libcurses/screen/copywin.c')
| -rw-r--r-- | usr/src/lib/libcurses/screen/copywin.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/usr/src/lib/libcurses/screen/copywin.c b/usr/src/lib/libcurses/screen/copywin.c new file mode 100644 index 0000000000..427c2fd0b4 --- /dev/null +++ b/usr/src/lib/libcurses/screen/copywin.c @@ -0,0 +1,183 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License, Version 1.0 only + * (the "License"). You may not use this file except in compliance + * with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ +/* + * Copyright 2004 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +/* Copyright (c) 1988 AT&T */ +/* All Rights Reserved */ + +/* + * University Copyright- Copyright (c) 1982, 1986, 1988 + * The Regents of the University of California + * All Rights Reserved + * + * University Acknowledgment- Portions of this document are derived from + * software developed by the University of California, Berkeley, and its + * contributors. + */ + +#pragma ident "%Z%%M% %I% %E% SMI" + +/*LINTLIBRARY*/ + +/* + * This routine writes parts of Srcwin onto Dstwin, + * either non-destructively (over_lay = TRUE) or destructively + * (over_lay = FALSE). + */ + +#include <string.h> +#include <sys/types.h> +#include "curses_inc.h" + +int +copywin(WINDOW *Srcwin, WINDOW *Dstwin, + int minRowSrc, int minColSrc, int minRowDst, + int minColDst, int maxRowDst, int maxColDst, + int over_lay) +{ + int ySrc, yDst, which_copy, t; + int height = (maxRowDst - minRowDst) + 1, + width = (maxColDst - minColDst) + 1; + chtype **_yDst = Dstwin->_y, **_ySrc = Srcwin->_y, + bkSrc = Srcwin->_bkgd, atDst = Dstwin->_attrs, + *spSrc, *spDst, *epSrc, *epDst, *savepS, + *savepD, width_bytes, numcopied; + +#ifdef DEBUG + if (outf) + fprintf(outf, "copywin(%0.2o, %0.2o);\n", Srcwin, Dstwin); +#endif /* DEBUG */ + + /* + * If we are going to be copying from curscr, + * first offset into curscr the offset the Dstwin knows about. + */ + if (Srcwin == curscr) + minRowSrc += Dstwin->_yoffset; + + /* + * There are three types of copy. + * 0 - Straight memcpy allowed + * 1 - We have to first check to see if the source character is a blank + * 2 - Dstwin has attributes or bkgd that must changed + * on a char-by-char basis. + */ + if ((which_copy = (over_lay) ? 1 : + (2 * ((Dstwin->_attrs != A_NORMAL) || + (Dstwin->_bkgd != _BLNKCHAR)))) == 0) + width_bytes = width * (int)sizeof (chtype); + + /* for each Row */ + for (ySrc = minRowSrc, yDst = minRowDst; height-- > 0; ySrc++, yDst++) { + if (which_copy) { + spSrc = &_ySrc[ySrc][minColSrc]; + spDst = &_yDst[yDst][minColDst]; + numcopied = width; + + epSrc = savepS = &_ySrc[ySrc][maxColDst]; + epDst = savepD = &_yDst[yDst][maxColDst]; + /* only copy into an area bounded by whole characters */ + for (; spDst <= epDst; spSrc++, spDst++) + if (!ISCBIT(*spDst)) + break; + if (spDst > epDst) + continue; + for (; epDst >= spDst; --epDst, --epSrc) + if (!ISCBIT(*epDst)) + break; + t = _curs_scrwidth[TYPE(RBYTE(*epDst))] - 1; + if (epDst+t <= savepD) + epDst += t, epSrc += t; + else + epDst -= 1, epSrc -= 1; + if (epDst < spDst) + continue; + /* don't copy partial characters */ + for (; spSrc <= epSrc; ++spSrc, ++spDst) + if (!ISCBIT(*spSrc)) + break; + if (spSrc > epSrc) + continue; + for (; epSrc >= spSrc; --epSrc, --epDst) + if (!ISCBIT(*epSrc)) + break; + t = _curs_scrwidth[TYPE(RBYTE(*epSrc))] - 1; + if (epSrc+t <= savepS) + epSrc += t, epDst += t; + else + epSrc -= 1, epDst -= 1; + if (epSrc < spSrc) + continue; + /* make sure that the copied-to place is clean */ + if (ISCBIT(*spDst)) + (void) _mbclrch(Dstwin, minRowDst, + /*LINTED*/ + (intptr_t)(spDst - *_yDst[yDst])); + if (ISCBIT(*epDst)) + (void) _mbclrch(Dstwin, minRowDst, + /*LINTED*/ + (intptr_t)(epDst - *_yDst[yDst])); + /*LINTED*/ + numcopied = (chtype) (epDst - spDst + 1); + + if (which_copy == 1) { /* overlay */ + for (; numcopied-- > 0; spSrc++, spDst++) + /* Check to see if the char is a "blank/bkgd". */ + if (*spSrc != bkSrc) + *spDst = *spSrc | atDst; + } else { + for (; numcopied-- > 0; spSrc++, spDst++) + *spDst = *spSrc | atDst; + } + } else { + /* ... copy all chtypes */ + (void) memcpy((char *)&_yDst[yDst][minColDst], + (char *)&_ySrc[ySrc][minColSrc], width_bytes); + } + + /* note that the line has changed */ + if (minColDst < Dstwin->_firstch[yDst]) + /*LINTED*/ + Dstwin->_firstch[yDst] = (short)minColDst; + if (maxColDst > Dstwin->_lastch[yDst]) + /*LINTED*/ + Dstwin->_lastch[yDst] = (short)maxColDst; + } + +#ifdef _VR3_COMPAT_CODE + if (_y16update) { + (*_y16update)(Dstwin, (maxRowDst - minRowDst) + 1, + (maxColDst - minColDst) + 1, minRowDst, minColDst); + } +#endif /* _VR3_COMPAT_CODE */ + + /* note that something in Dstwin has changed */ + Dstwin->_flags |= _WINCHANGED; + + if (Dstwin->_sync) + wsyncup(Dstwin); + + return (Dstwin->_immed ? wrefresh(Dstwin) : OK); +} |