| 1 | /* refresh.c */
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| 2 |
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| 3 | #include <curses.h>
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| 4 | #include "curspriv.h"
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| 5 |
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| 6 | /* Wrefresh() updates window win's area of the physical screen. */
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| 7 | void wrefresh(win)
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| 8 | WINDOW *win;
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| 9 | {
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| 10 | if (win == curscr)
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| 11 | curscr->_clear = TRUE;
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| 12 | else
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| 13 | wnoutrefresh(win);
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| 14 | doupdate();
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| 15 | }
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| 16 |
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| 17 | /****************************************************************/
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| 18 | /* Wnoutrefresh() updates the image of the desired screen, */
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| 19 | /* Without doing physical update (copies window win's image to */
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| 20 | /* The _cursvar.tmpwin window, which is hidden from the user). */
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| 21 | /****************************************************************/
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| 22 |
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| 23 | void wnoutrefresh(win)
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| 24 | register WINDOW *win;
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| 25 | {
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| 26 | register int *dst; /* start destination in temp window */
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| 27 | register int *end; /* end destination in temp window */
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| 28 | register int *src; /* source in user window */
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| 29 | register int first; /* first changed char on line */
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| 30 | register int last; /* last changed char on line */
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| 31 | WINDOW *nscr;
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| 32 | int begy; /* window's place on screen */
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| 33 | int begx;
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| 34 | int i;
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| 35 | int j;
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| 36 |
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| 37 | nscr = _cursvar.tmpwin;
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| 38 | begy = win->_begy;
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| 39 | begx = win->_begx;
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| 40 |
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| 41 | for (i = 0, j = begy; i <= win->_maxy; i++, j++) {
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| 42 | if (win->_minchng[i] != _NO_CHANGE) {
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| 43 | first = win->_minchng[i];
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| 44 | last = win->_maxchng[i];
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| 45 | dst = &(nscr->_line[j][begx + first]);
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| 46 | end = &(nscr->_line[j][begx + last]);
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| 47 | src = &(win->_line[i][first]);
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| 48 |
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| 49 | while (dst <= end) /* copy user line to temp window */
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| 50 | *dst++ = *src++;
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| 51 |
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| 52 | first += begx; /* nscr's min/max change positions */
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| 53 | last += begx;
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| 54 |
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| 55 | if ((nscr->_minchng[j] == _NO_CHANGE) || (nscr->_minchng[j] > first))
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| 56 | nscr->_minchng[j] = first;
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| 57 | if (last > nscr->_maxchng[j]) nscr->_maxchng[j] = last;
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| 58 |
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| 59 | win->_minchng[i] = _NO_CHANGE; /* updated now */
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| 60 | } /* if */
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| 61 | win->_maxchng[i] = _NO_CHANGE; /* updated now */
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| 62 | } /* for */
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| 63 |
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| 64 | if (win->_clear) {
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| 65 | win->_clear = FALSE;
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| 66 | nscr->_clear = TRUE;
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| 67 | } /* if */
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| 68 | if (!win->_leave) {
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| 69 | nscr->_cury = win->_cury + begy;
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| 70 | nscr->_curx = win->_curx + begx;
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| 71 | } /* if */
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| 72 | } /* wnoutrefresh */
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