diff options
Diffstat (limited to 'ncurses-5.2/ncurses/base/lib_window.c')
| -rw-r--r-- | ncurses-5.2/ncurses/base/lib_window.c | 221 |
1 files changed, 221 insertions, 0 deletions
diff --git a/ncurses-5.2/ncurses/base/lib_window.c b/ncurses-5.2/ncurses/base/lib_window.c new file mode 100644 index 0000000..a7a1ccd --- /dev/null +++ b/ncurses-5.2/ncurses/base/lib_window.c @@ -0,0 +1,221 @@ +/**************************************************************************** + * 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 <zmbenhal@netcom.com> 1992,1995 * + * and: Eric S. Raymond <esr@snark.thyrsus.com> * + ****************************************************************************/ + +/* +** lib_window.c +** +** +*/ + +#include <curses.priv.h> + +MODULE_ID("$Id$") + +void _nc_synchook(WINDOW *win) +/* hook to be called after each window change */ +{ + if (win->_immed) wrefresh(win); + if (win->_sync) wsyncup(win); +} + +int mvderwin(WINDOW *win, int y, int x) +/* move a derived window */ +{ + WINDOW *orig; + int i; + + T((T_CALLED("mvderwin(%p,%d,%d)"), win, y, x)); + + if (win && (orig = win->_parent)) + { + if (win->_parx==x && win->_pary==y) + returnCode(OK); + if (x<0 || y<0) + returnCode(ERR); + if ( (x+getmaxx(win) > getmaxx(orig)) || + (y+getmaxy(win) > getmaxy(orig)) ) + returnCode(ERR); + } + else + returnCode(ERR); + wsyncup(win); + win->_parx = x; + win->_pary = y; + for(i=0;i<getmaxy(win);i++) + win->_line[i].text = &(orig->_line[y++].text[x]); + returnCode(OK); +} + +int syncok(WINDOW *win, bool bf) +/* enable/disable automatic wsyncup() on each change to window */ +{ + T((T_CALLED("syncok(%p,%d)"), win, bf)); + + if (win) { + win->_sync = bf; + returnCode(OK); + } else + returnCode(ERR); +} + +void wsyncup(WINDOW *win) +/* mark changed every cell in win's ancestors that is changed in win */ +/* Rewritten by J. Pfeifer, 1-Apr-96 (don't even think that...) */ +{ + WINDOW *wp; + + if (win && win->_parent) + for (wp = win; wp->_parent; wp = wp->_parent) + { + int y; + WINDOW *pp = wp->_parent; + + assert((wp->_pary <= pp->_maxy) && + ((wp->_pary+wp->_maxy) <= pp->_maxy)); + + for (y = 0; y <= wp->_maxy; y++) + { + int left = wp->_line[y].firstchar; + if (left >= 0) /* line is touched */ + { + struct ldat *line = &(pp->_line[wp->_pary + y]); + /* left & right character in parent window coordinates */ + int right = wp->_line[y].lastchar + wp->_parx; + left += wp->_parx; + + CHANGED_RANGE(line, left, right); + } + } + } +} + +void wsyncdown(WINDOW *win) +/* mark changed every cell in win that is changed in any of its ancestors */ +/* Rewritten by J. Pfeifer, 1-Apr-96 (don't even think that...) */ +{ + if (win && win->_parent) + { + WINDOW *pp = win->_parent; + int y; + + /* This recursion guarantees, that the changes are propagated down- + wards from the root to our direct parent. */ + wsyncdown(pp); + + /* and now we only have to propagate the changes from our direct + parent, if there are any. */ + assert((win->_pary <= pp->_maxy) && + ((win->_pary + win->_maxy) <= pp->_maxy)); + + for (y = 0; y <= win->_maxy; y++) + { + if (pp->_line[win->_pary + y].firstchar >= 0) /* parent changed */ + { + struct ldat *line = &(win->_line[y]); + /* left and right character in child coordinates */ + int left = pp->_line[win->_pary + y].firstchar - win->_parx; + int right = pp->_line[win->_pary + y].lastchar - win->_parx; + /* The change maybe outside the childs range */ + if (left<0) + left = 0; + if (right > win->_maxx) + right = win->_maxx; + CHANGED_RANGE(line, left, right); + } + } + } +} + +void wcursyncup(WINDOW *win) +/* sync the cursor in all derived windows to its value in the base window */ +{ + WINDOW *wp; + for( wp = win; wp && wp->_parent; wp = wp->_parent ) { + wmove( wp->_parent, wp->_pary + wp->_cury, wp->_parx + wp->_curx ); + } +} + +WINDOW *dupwin(WINDOW *win) +/* make an exact duplicate of the given window */ +{ +WINDOW *nwin; +size_t linesize; +int i; + + T((T_CALLED("dupwin(%p)"), win)); + + if ((win==NULL) || + ((nwin = newwin(win->_maxy + 1, win->_maxx + 1, win->_begy, win->_begx)) == NULL)) + returnWin(0); + + nwin->_curx = win->_curx; + nwin->_cury = win->_cury; + nwin->_maxy = win->_maxy; + nwin->_maxx = win->_maxx; + nwin->_begy = win->_begy; + nwin->_begx = win->_begx; + nwin->_yoffset = win->_yoffset; + + nwin->_flags = win->_flags & ~_SUBWIN; + /* Due to the use of newwin(), the clone is not a subwindow. + * The text is really copied into the clone. + */ + + nwin->_attrs = win->_attrs; + nwin->_bkgd = win->_bkgd; + + nwin->_clear = win->_clear; + nwin->_scroll = win->_scroll; + nwin->_leaveok = win->_leaveok; + nwin->_use_keypad = win->_use_keypad; + nwin->_delay = win->_delay; + nwin->_immed = win->_immed; + nwin->_sync = win->_sync; + + nwin->_parx = 0; + nwin->_pary = 0; + nwin->_parent = (WINDOW*)0; + /* See above: the clone isn't a subwindow! */ + + nwin->_regtop = win->_regtop; + nwin->_regbottom = win->_regbottom; + + linesize = (win->_maxx + 1) * sizeof(chtype); + for (i = 0; i <= nwin->_maxy; i++) { + memcpy(nwin->_line[i].text, win->_line[i].text, linesize); + nwin->_line[i].firstchar = win->_line[i].firstchar; + nwin->_line[i].lastchar = win->_line[i].lastchar; + } + + returnWin(nwin); +} |