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Diffstat (limited to 'lib/libcurses/base/lib_refresh.c')
-rw-r--r--lib/libcurses/base/lib_refresh.c238
1 files changed, 119 insertions, 119 deletions
diff --git a/lib/libcurses/base/lib_refresh.c b/lib/libcurses/base/lib_refresh.c
index 4d1b98cb968..4ae172db5f7 100644
--- a/lib/libcurses/base/lib_refresh.c
+++ b/lib/libcurses/base/lib_refresh.c
@@ -1,7 +1,7 @@
-/* $OpenBSD: lib_refresh.c,v 1.2 1999/08/15 11:40:55 millert Exp $ */
+/* $OpenBSD: lib_refresh.c,v 1.3 2000/06/19 03:53:44 millert Exp $ */
/****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc. *
+ * Copyright (c) 1998,1999,2000 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 *
@@ -33,8 +33,6 @@
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
****************************************************************************/
-
-
/*
* lib_refresh.c
*
@@ -44,142 +42,144 @@
#include <curses.priv.h>
-MODULE_ID("$From: lib_refresh.c,v 1.24 1999/07/31 11:36:37 juergen Exp $")
+MODULE_ID("$From: lib_refresh.c,v 1.25 2000/04/29 21:17:08 tom Exp $")
-int wrefresh(WINDOW *win)
+int
+wrefresh(WINDOW *win)
{
-int code;
-
- T((T_CALLED("wrefresh(%p)"), win));
-
- if (win == curscr) {
- curscr->_clear = TRUE;
- code = doupdate();
- } else if ((code = wnoutrefresh(win)) == OK) {
- if (win->_clear)
- newscr->_clear = TRUE;
- code = doupdate();
- /*
- * Reset the clearok() flag in case it was set for the special
- * case in hardscroll.c (if we don't reset it here, we'll get 2
- * refreshes because the flag is copied from stdscr to newscr).
- * Resetting the flag shouldn't do any harm, anyway.
- */
- win->_clear = FALSE;
- }
- returnCode(code);
-}
-
-int wnoutrefresh(WINDOW *win)
-{
-short limit_x;
-short i, j;
-short begx;
-short begy;
-short m, n;
-bool wide;
-
- T((T_CALLED("wnoutrefresh(%p)"), win));
-#ifdef TRACE
- if (_nc_tracing & TRACE_UPDATE)
- _tracedump("...win", win);
-#endif /* TRACE */
-
- /*
- * This function will break badly if we try to refresh a pad.
- */
- if ((win == 0)
- || (win->_flags & _ISPAD))
- returnCode(ERR);
+ int code;
- /* put them here so "win == 0" won't break our code */
- begx = win->_begx;
- begy = win->_begy;
-
- newscr->_bkgd = win->_bkgd;
- newscr->_attrs = win->_attrs;
-
- /* merge in change information from all subwindows of this window */
- wsyncdown(win);
+ T((T_CALLED("wrefresh(%p)"), win));
+ if (win == curscr) {
+ curscr->_clear = TRUE;
+ code = doupdate();
+ } else if ((code = wnoutrefresh(win)) == OK) {
+ if (win->_clear)
+ newscr->_clear = TRUE;
+ code = doupdate();
/*
- * For pure efficiency, we'd want to transfer scrolling information
- * from the window to newscr whenever the window is wide enough that
- * its update will dominate the cost of the update for the horizontal
- * band of newscr that it occupies. Unfortunately, this threshold
- * tends to be complex to estimate, and in any case scrolling the
- * whole band and rewriting the parts outside win's image would look
- * really ugly. So. What we do is consider the window "wide" if it
- * either (a) occupies the whole width of newscr, or (b) occupies
- * all but at most one column on either vertical edge of the screen
- * (this caters to fussy people who put boxes around full-screen
- * windows). Note that changing this formula will not break any code,
- * merely change the costs of various update cases.
+ * Reset the clearok() flag in case it was set for the special
+ * case in hardscroll.c (if we don't reset it here, we'll get 2
+ * refreshes because the flag is copied from stdscr to newscr).
+ * Resetting the flag shouldn't do any harm, anyway.
*/
- wide = (begx <= 1 && win->_maxx >= (newscr->_maxx - 1));
-
- win->_flags &= ~_HASMOVED;
+ win->_clear = FALSE;
+ }
+ returnCode(code);
+}
- /*
- * Microtweaking alert! This double loop is one of the genuine
- * hot spots in the code. Even gcc doesn't seem to do enough
- * common-subexpression chunking to make it really tense,
- * so we'll force the issue.
- */
+int
+wnoutrefresh(WINDOW *win)
+{
+ NCURSES_SIZE_T limit_x;
+ NCURSES_SIZE_T i, j;
+ NCURSES_SIZE_T begx;
+ NCURSES_SIZE_T begy;
+ NCURSES_SIZE_T m, n;
+ bool wide;
+
+ T((T_CALLED("wnoutrefresh(%p)"), win));
+#ifdef TRACE
+ if (_nc_tracing & TRACE_UPDATE)
+ _tracedump("...win", win);
+#endif /* TRACE */
- /* limit(n) */
+ /*
+ * This function will break badly if we try to refresh a pad.
+ */
+ if ((win == 0)
+ || (win->_flags & _ISPAD))
+ returnCode(ERR);
+
+ /* put them here so "win == 0" won't break our code */
+ begx = win->_begx;
+ begy = win->_begy;
+
+ newscr->_bkgd = win->_bkgd;
+ newscr->_attrs = win->_attrs;
+
+ /* merge in change information from all subwindows of this window */
+ wsyncdown(win);
+
+ /*
+ * For pure efficiency, we'd want to transfer scrolling information
+ * from the window to newscr whenever the window is wide enough that
+ * its update will dominate the cost of the update for the horizontal
+ * band of newscr that it occupies. Unfortunately, this threshold
+ * tends to be complex to estimate, and in any case scrolling the
+ * whole band and rewriting the parts outside win's image would look
+ * really ugly. So. What we do is consider the window "wide" if it
+ * either (a) occupies the whole width of newscr, or (b) occupies
+ * all but at most one column on either vertical edge of the screen
+ * (this caters to fussy people who put boxes around full-screen
+ * windows). Note that changing this formula will not break any code,
+ * merely change the costs of various update cases.
+ */
+ wide = (begx <= 1 && win->_maxx >= (newscr->_maxx - 1));
+
+ win->_flags &= ~_HASMOVED;
+
+ /*
+ * Microtweaking alert! This double loop is one of the genuine
+ * hot spots in the code. Even gcc doesn't seem to do enough
+ * common-subexpression chunking to make it really tense,
+ * so we'll force the issue.
+ */
+
+ /* limit(n) */
+ limit_x = win->_maxx;
+ /* limit(j) */
+ if (limit_x > win->_maxx)
limit_x = win->_maxx;
- /* limit(j) */
- if (limit_x > win->_maxx)
- limit_x = win->_maxx;
-
- for (i = 0, m = begy + win->_yoffset;
- i <= win->_maxy && m <= newscr->_maxy;
- i++, m++) {
- register struct ldat *nline = &newscr->_line[m];
- register struct ldat *oline = &win->_line[i];
- if (oline->firstchar != _NOCHANGE) {
- int last = oline->lastchar;
+ for (i = 0, m = begy + win->_yoffset;
+ i <= win->_maxy && m <= newscr->_maxy;
+ i++, m++) {
+ register struct ldat *nline = &newscr->_line[m];
+ register struct ldat *oline = &win->_line[i];
- if (last > limit_x)
- last = limit_x;
+ if (oline->firstchar != _NOCHANGE) {
+ int last = oline->lastchar;
- for (j = oline->firstchar, n = j + begx; j <= last; j++, n++) {
- if (oline->text[j] != nline->text[n]) {
- nline->text[n] = oline->text[j];
- CHANGED_CELL(nline, n);
- }
- }
+ if (last > limit_x)
+ last = limit_x;
+ for (j = oline->firstchar, n = j + begx; j <= last; j++, n++) {
+ if (oline->text[j] != nline->text[n]) {
+ nline->text[n] = oline->text[j];
+ CHANGED_CELL(nline, n);
}
+ }
+ }
#if USE_SCROLL_HINTS
- if (wide) {
- int oind = oline->oldindex;
+ if (wide) {
+ int oind = oline->oldindex;
- nline->oldindex = (oind == _NEWINDEX) ? _NEWINDEX : begy + oind + win->_yoffset;
- }
+ nline->oldindex = (oind == _NEWINDEX) ? _NEWINDEX : begy + oind
+ + win->_yoffset;
+ }
#endif /* USE_SCROLL_HINTS */
- oline->firstchar = oline->lastchar = _NOCHANGE;
- if_USE_SCROLL_HINTS(oline->oldindex = i);
- }
+ oline->firstchar = oline->lastchar = _NOCHANGE;
+ if_USE_SCROLL_HINTS(oline->oldindex = i);
+ }
- if (win->_clear) {
- win->_clear = FALSE;
- newscr->_clear = TRUE;
- }
+ if (win->_clear) {
+ win->_clear = FALSE;
+ newscr->_clear = TRUE;
+ }
+
+ if (!win->_leaveok) {
+ newscr->_cury = win->_cury + win->_begy + win->_yoffset;
+ newscr->_curx = win->_curx + win->_begx;
+ }
+ newscr->_leaveok = win->_leaveok;
- if (! win->_leaveok) {
- newscr->_cury = win->_cury + win->_begy + win->_yoffset;
- newscr->_curx = win->_curx + win->_begx;
- }
- newscr->_leaveok = win->_leaveok;
-
#ifdef TRACE
- if (_nc_tracing & TRACE_UPDATE)
- _tracedump("newscr", newscr);
+ if (_nc_tracing & TRACE_UPDATE)
+ _tracedump("newscr", newscr);
#endif /* TRACE */
- returnCode(OK);
+ returnCode(OK);
}
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