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-rw-r--r--nx-X11/programs/xterm/cursor.c345
1 files changed, 0 insertions, 345 deletions
diff --git a/nx-X11/programs/xterm/cursor.c b/nx-X11/programs/xterm/cursor.c
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--- a/nx-X11/programs/xterm/cursor.c
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-/* $XTermId: cursor.c,v 1.36 2005/08/05 01:25:39 tom Exp $ */
-
-/*
- * $Xorg: cursor.c,v 1.3 2000/08/17 19:55:08 cpqbld Exp $
- */
-
-/* $XFree86: xc/programs/xterm/cursor.c,v 3.18 2005/08/05 01:25:39 dickey Exp $ */
-
-/*
- * Copyright 2002-2004,2005 by Thomas E. Dickey
- *
- * All Rights Reserved
- *
- * 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, 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 LISTED COPYRIGHT HOLDER(S) 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.
- *
- * Copyright 1987 by Digital Equipment Corporation, Maynard, Massachusetts.
- *
- * All Rights Reserved
- *
- * Permission to use, copy, modify, and distribute this software and its
- * documentation for any purpose and without fee is hereby granted,
- * provided that the above copyright notice appear in all copies and that
- * both that copyright notice and this permission notice appear in
- * supporting documentation, and that the name of Digital Equipment
- * Corporation not be used in advertising or publicity pertaining to
- * distribution of the software without specific, written prior permission.
- *
- *
- * DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
- * ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
- * DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
- * ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
- * WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
- * ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
- * SOFTWARE.
- */
-
-/* cursor.c */
-
-#include <xterm.h>
-#include <data.h>
-
-#include <assert.h>
-
-/*
- * Moves the cursor to the specified position, checking for bounds.
- * (this includes scrolling regions)
- * The origin is considered to be 0, 0 for this procedure.
- */
-void
-CursorSet(TScreen * screen, int row, int col, unsigned flags)
-{
- int use_row = row;
- int max_row;
-
- col = (col < 0 ? 0 : col);
- set_cur_col(screen, (col <= screen->max_col ? col : screen->max_col));
- max_row = screen->max_row;
- if (flags & ORIGIN) {
- use_row += screen->top_marg;
- max_row = screen->bot_marg;
- }
- use_row = (use_row < 0 ? 0 : use_row);
- set_cur_row(screen, (use_row <= max_row ? use_row : max_row));
- screen->do_wrap = 0;
-
- TRACE(("CursorSet(%d,%d) margins [%d..%d] -> %d,%d %s\n",
- row, col,
- screen->top_marg,
- screen->bot_marg,
- screen->cur_row,
- screen->cur_col,
- (flags & ORIGIN ? "origin" : "normal")));
-}
-
-/*
- * moves the cursor left n, no wrap around
- */
-void
-CursorBack(TScreen * screen, int n)
-{
- int i, j, k, rev;
-
- if ((rev = (term->flags & (REVERSEWRAP | WRAPAROUND)) ==
- (REVERSEWRAP | WRAPAROUND)) != 0
- && screen->do_wrap)
- n--;
- if ((screen->cur_col -= n) < 0) {
- if (rev) {
- if ((i = ((j = MaxCols(screen))
- * screen->cur_row) + screen->cur_col) < 0) {
- k = j * MaxRows(screen);
- i += ((-i) / k + 1) * k;
- }
- set_cur_row(screen, i / j);
- set_cur_col(screen, i % j);
- } else
- set_cur_col(screen, 0);
- }
- screen->do_wrap = 0;
-}
-
-/*
- * moves the cursor forward n, no wraparound
- */
-void
-CursorForward(TScreen * screen, int n)
-{
- int next = screen->cur_col + n;
- int max = CurMaxCol(screen, screen->cur_row);
-
- if (next > max)
- next = max;
-
- set_cur_col(screen, next);
- screen->do_wrap = 0;
-}
-
-/*
- * moves the cursor down n, no scrolling.
- * Won't pass bottom margin or bottom of screen.
- */
-void
-CursorDown(TScreen * screen, int n)
-{
- int max;
- int next = screen->cur_row + n;
-
- max = (screen->cur_row > screen->bot_marg ?
- screen->max_row : screen->bot_marg);
- if (next > max)
- next = max;
- if (next > screen->max_row)
- next = screen->max_row;
-
- set_cur_row(screen, next);
- screen->do_wrap = 0;
-}
-
-/*
- * moves the cursor up n, no linestarving.
- * Won't pass top margin or top of screen.
- */
-void
-CursorUp(TScreen * screen, int n)
-{
- int min;
- int next = screen->cur_row - n;
-
- min = ((screen->cur_row < screen->top_marg)
- ? 0
- : screen->top_marg);
- if (next < min)
- next = min;
- if (next < 0)
- next = 0;
-
- set_cur_row(screen, next);
- screen->do_wrap = 0;
-}
-
-/*
- * Moves cursor down amount lines, scrolls if necessary.
- * Won't leave scrolling region. No carriage return.
- */
-void
-xtermIndex(TScreen * screen, int amount)
-{
- int j;
-
- /*
- * indexing when below scrolling region is cursor down.
- * if cursor high enough, no scrolling necessary.
- */
- if (screen->cur_row > screen->bot_marg
- || screen->cur_row + amount <= screen->bot_marg) {
- CursorDown(screen, amount);
- return;
- }
-
- CursorDown(screen, j = screen->bot_marg - screen->cur_row);
- xtermScroll(screen, amount - j);
-}
-
-/*
- * Moves cursor up amount lines, reverse scrolls if necessary.
- * Won't leave scrolling region. No carriage return.
- */
-void
-RevIndex(TScreen * screen, int amount)
-{
- /*
- * reverse indexing when above scrolling region is cursor up.
- * if cursor low enough, no reverse indexing needed
- */
- if (screen->cur_row < screen->top_marg
- || screen->cur_row - amount >= screen->top_marg) {
- CursorUp(screen, amount);
- return;
- }
-
- RevScroll(screen, amount - (screen->cur_row - screen->top_marg));
- CursorUp(screen, screen->cur_row - screen->top_marg);
-}
-
-/*
- * Moves Cursor To First Column In Line
- * (Note: xterm doesn't implement SLH, SLL which would affect use of this)
- */
-void
-CarriageReturn(TScreen * screen)
-{
- set_cur_col(screen, 0);
- screen->do_wrap = 0;
-}
-
-/*
- * Save Cursor and Attributes
- */
-void
-CursorSave(XtermWidget tw)
-{
- TScreen *screen = &tw->screen;
- SavedCursor *sc = &screen->sc[screen->alternate != False];
-
- sc->saved = True;
- sc->row = screen->cur_row;
- sc->col = screen->cur_col;
- sc->flags = tw->flags;
- sc->curgl = screen->curgl;
- sc->curgr = screen->curgr;
-#if OPT_ISO_COLORS
- sc->cur_foreground = tw->cur_foreground;
- sc->cur_background = tw->cur_background;
- sc->sgr_foreground = tw->sgr_foreground;
-#endif
- memmove(sc->gsets, screen->gsets, sizeof(screen->gsets));
-}
-
-/*
- * We save/restore all visible attributes, plus wrapping, origin mode, and the
- * selective erase attribute.
- */
-#define DECSC_FLAGS (ATTRIBUTES|ORIGIN|WRAPAROUND|PROTECTED)
-
-/*
- * Restore Cursor and Attributes
- */
-void
-CursorRestore(XtermWidget tw)
-{
- TScreen *screen = &tw->screen;
- SavedCursor *sc = &screen->sc[screen->alternate != False];
-
- /* Restore the character sets, unless we never did a save-cursor op.
- * In that case, we'll reset the character sets.
- */
- if (sc->saved) {
- memmove(screen->gsets, sc->gsets, sizeof(screen->gsets));
- screen->curgl = sc->curgl;
- screen->curgr = sc->curgr;
- } else {
- resetCharsets(screen);
- }
-
- tw->flags &= ~DECSC_FLAGS;
- tw->flags |= sc->flags & DECSC_FLAGS;
- CursorSet(screen,
- ((tw->flags & ORIGIN)
- ? sc->row - screen->top_marg
- : sc->row),
- sc->col, tw->flags);
-
-#if OPT_ISO_COLORS
- tw->sgr_foreground = sc->sgr_foreground;
- SGR_Foreground(tw->flags & FG_COLOR ? sc->cur_foreground : -1);
- SGR_Background(tw->flags & BG_COLOR ? sc->cur_background : -1);
-#endif
-}
-
-/*
- * Move the cursor to the first column of the n-th next line.
- */
-void
-CursorNextLine(TScreen * screen, int count)
-{
- CursorDown(screen, count < 1 ? 1 : count);
- CarriageReturn(screen);
- do_xevents();
-}
-
-/*
- * Move the cursor to the first column of the n-th previous line.
- */
-void
-CursorPrevLine(TScreen * screen, int count)
-{
- CursorUp(screen, count < 1 ? 1 : count);
- CarriageReturn(screen);
- do_xevents();
-}
-
-#if OPT_TRACE
-int
-set_cur_row(TScreen * screen, int value)
-{
- assert(screen != 0);
- assert(value >= 0);
- assert(value <= screen->max_row);
- screen->cur_row = value;
- return value;
-}
-
-int
-set_cur_col(TScreen * screen, int value)
-{
- assert(screen != 0);
- assert(value >= 0);
- assert(value <= screen->max_col);
- screen->cur_col = value;
- return value;
-}
-#endif /* OPT_TRACE */