X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Fbase%2Flib_overlay.c;h=26314de5e5fba0d604cfbf5c7b7b1bb2c14c03a9;hp=7840b45036e0968e5c9d96ca62cf0cdc3e255357;hb=a21e1b511e3c79ea7c4786f6b0e48850e7fa94f0;hpb=46722468f47c2b77b3987729b4bcf2321cccfd01 diff --git a/ncurses/base/lib_overlay.c b/ncurses/base/lib_overlay.c index 7840b450..26314de5 100644 --- a/ncurses/base/lib_overlay.c +++ b/ncurses/base/lib_overlay.c @@ -1,5 +1,5 @@ /**************************************************************************** - * Copyright (c) 1998-2001,2002 Free Software Foundation, Inc. * + * Copyright (c) 1998-2006,2007 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 * @@ -40,40 +40,46 @@ #include -MODULE_ID("$Id: lib_overlay.c,v 1.21 2002/09/21 23:03:32 tom Exp $") +MODULE_ID("$Id: lib_overlay.c,v 1.25 2008/04/12 17:21:59 tom Exp $") static int -overlap(const WINDOW *const s, WINDOW *const d, int const flag) +overlap(const WINDOW *const src, WINDOW *const dst, int const flag) { + int rc = ERR; int sx1, sy1, sx2, sy2; int dx1, dy1, dx2, dy2; int sminrow, smincol; int dminrow, dmincol; int dmaxrow, dmaxcol; - T((T_CALLED("overlap(%p,%p,%d)"), s, d, flag)); - - if (s == 0 || d == 0) { - returnCode(ERR); - } else { - T(("src : begy %d, begx %d, maxy %d, maxx %d", - s->_begy, s->_begx, s->_maxy, s->_maxx)); - T(("dst : begy %d, begx %d, maxy %d, maxx %d", - d->_begy, d->_begx, d->_maxy, d->_maxx)); - - sx1 = s->_begx; - sy1 = s->_begy; - sx2 = sx1 + s->_maxx; - sy2 = sy1 + s->_maxy; - - dx1 = d->_begx; - dy1 = d->_begy; - dx2 = dx1 + d->_maxx; - dy2 = dy1 + d->_maxy; - - if (dx2 < sx1 || dx1 > sx2 || dy2 < sy1 || dy1 > sy2) { - returnCode(ERR); /* No intersection */ - } else { + T((T_CALLED("overlap(%p,%p,%d)"), src, dst, flag)); + + if (src != 0 && dst != 0) { + _nc_lock_window(src); + _nc_lock_window(dst); + + T(("src : begy %ld, begx %ld, maxy %ld, maxx %ld", + (long) src->_begy, + (long) src->_begx, + (long) src->_maxy, + (long) src->_maxx)); + T(("dst : begy %ld, begx %ld, maxy %ld, maxx %ld", + (long) dst->_begy, + (long) dst->_begx, + (long) dst->_maxy, + (long) dst->_maxx)); + + sx1 = src->_begx; + sy1 = src->_begy; + sx2 = sx1 + src->_maxx; + sy2 = sy1 + src->_maxy; + + dx1 = dst->_begx; + dy1 = dst->_begy; + dx2 = dx1 + dst->_maxx; + dy2 = dy1 + dst->_maxy; + + if (dx2 >= sx1 && dx1 <= sx2 && dy2 >= sy1 && dy1 <= sy2) { sminrow = max(sy1, dy1) - sy1; smincol = max(sx1, dx1) - sx1; dminrow = max(sy1, dy1) - dy1; @@ -81,13 +87,16 @@ overlap(const WINDOW *const s, WINDOW *const d, int const flag) dmaxrow = min(sy2, dy2) - dy1; dmaxcol = min(sx2, dx2) - dx1; - returnCode(copywin(s, d, - sminrow, smincol, - dminrow, dmincol, - dmaxrow, dmaxcol, - flag)); + rc = copywin(src, dst, + sminrow, smincol, + dminrow, dmincol, + dmaxrow, dmaxcol, + flag); } + _nc_unlock_window(dst); + _nc_unlock_window(src); } + returnCode(rc); } /* @@ -131,54 +140,72 @@ copywin(const WINDOW *src, WINDOW *dst, int dmaxrow, int dmaxcol, int over) { + int rc = ERR; int sx, sy, dx, dy; bool touched; - attr_t bk = AttrOf(dst->_nc_bkgd); - attr_t mask = ~(attr_t) ((bk & A_COLOR) ? A_COLOR : 0); + attr_t bk; + attr_t mask; T((T_CALLED("copywin(%p, %p, %d, %d, %d, %d, %d, %d, %d)"), src, dst, sminrow, smincol, dminrow, dmincol, dmaxrow, dmaxcol, over)); - if (!src || !dst) - returnCode(ERR); - - /* make sure rectangle exists in source */ - if ((sminrow + dmaxrow - dminrow) > (src->_maxy + 1) || - (smincol + dmaxcol - dmincol) > (src->_maxx + 1)) { - returnCode(ERR); - } - - T(("rectangle exists in source")); - - /* make sure rectangle fits in destination */ - if (dmaxrow > dst->_maxy || dmaxcol > dst->_maxx) { - returnCode(ERR); - } - - T(("rectangle fits in destination")); - - for (dy = dminrow, sy = sminrow; dy <= dmaxrow; sy++, dy++) { - touched = FALSE; - for (dx = dmincol, sx = smincol; dx <= dmaxcol; sx++, dx++) { - if (over) { - if ((CharOf(src->_line[sy].text[sx]) != L(' ')) && - (!CharEq(dst->_line[dy].text[dx], src->_line[sy].text[sx]))) { - dst->_line[dy].text[dx] = src->_line[sy].text[sx]; - SetAttr(dst->_line[dy].text[dx], - (AttrOf(src->_line[sy].text[sx]) & mask) | bk); - touched = TRUE; - } - } else { - if (!CharEq(dst->_line[dy].text[dx], src->_line[sy].text[sx])) { - dst->_line[dy].text[dx] = src->_line[sy].text[sx]; - touched = TRUE; + if (src && dst) { + + _nc_lock_window(src); + _nc_lock_window(dst); + + bk = AttrOf(dst->_nc_bkgd); + mask = ~(attr_t) ((bk & A_COLOR) ? A_COLOR : 0); + + /* make sure rectangle exists in source */ + if ((sminrow + dmaxrow - dminrow) <= (src->_maxy + 1) && + (smincol + dmaxcol - dmincol) <= (src->_maxx + 1)) { + + T(("rectangle exists in source")); + + /* make sure rectangle fits in destination */ + if (dmaxrow <= dst->_maxy && dmaxcol <= dst->_maxx) { + + T(("rectangle fits in destination")); + + for (dy = dminrow, sy = sminrow; + dy <= dmaxrow; + sy++, dy++) { + + touched = FALSE; + for (dx = dmincol, sx = smincol; + dx <= dmaxcol; + sx++, dx++) { + if (over) { + if ((CharOf(src->_line[sy].text[sx]) != L(' ')) && + (!CharEq(dst->_line[dy].text[dx], + src->_line[sy].text[sx]))) { + dst->_line[dy].text[dx] = + src->_line[sy].text[sx]; + SetAttr(dst->_line[dy].text[dx], + ((AttrOf(src->_line[sy].text[sx]) & + mask) | bk)); + touched = TRUE; + } + } else { + if (!CharEq(dst->_line[dy].text[dx], + src->_line[sy].text[sx])) { + dst->_line[dy].text[dx] = + src->_line[sy].text[sx]; + touched = TRUE; + } + } + } + if (touched) { + touchline(dst, dminrow, (dmaxrow - dminrow + 1)); + } } + T(("finished copywin")); + rc = OK; } } - if (touched) { - touchline(dst, dminrow, (dmaxrow - dminrow + 1)); - } + _nc_unlock_window(dst); + _nc_unlock_window(src); } - T(("finished copywin")); - returnCode(OK); + returnCode(rc); }