/****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2001,2002 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 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
****************************************************************************/
-
/*
** lib_overlay.c
**
#include <curses.priv.h>
-MODULE_ID("$Id: lib_overlay.c,v 1.12 1998/02/11 12:13:59 tom Exp $")
+MODULE_ID("$Id: lib_overlay.c,v 1.21 2002/09/21 23:03:32 tom Exp $")
-static int overlap(const WINDOW *const s, WINDOW *const d, int const flag)
+static int
+overlap(const WINDOW *const s, WINDOW *const d, int const flag)
{
-int sminrow, smincol, dminrow, dmincol, dmaxrow, dmaxcol;
-
- T(("overlap : sby %d, sbx %d, smy %d, smx %d, dby %d, dbx %d, dmy %d, dmx %d",
- s->_begy, s->_begx, s->_maxy, s->_maxx,
- d->_begy, d->_begx, d->_maxy, d->_maxx));
-
- if (!s || !d)
- returnCode(ERR);
-
- sminrow = max(s->_begy, d->_begy) - s->_begy;
- smincol = max(s->_begx, d->_begx) - s->_begx;
- dminrow = max(s->_begy, d->_begy) - d->_begy;
- dmincol = max(s->_begx, d->_begx) - d->_begx;
- dmaxrow = min(s->_maxy+s->_begy, d->_maxy+d->_begy) - d->_begy;
- dmaxcol = min(s->_maxx+s->_begx, d->_maxx+d->_begx) - d->_begx;
-
- return(copywin(s, d,
- sminrow, smincol, dminrow, dmincol, dmaxrow, dmaxcol,
- flag));
+ 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 {
+ sminrow = max(sy1, dy1) - sy1;
+ smincol = max(sx1, dx1) - sx1;
+ dminrow = max(sy1, dy1) - dy1;
+ dmincol = max(sx1, dx1) - dx1;
+ dmaxrow = min(sy2, dy2) - dy1;
+ dmaxcol = min(sx2, dx2) - dx1;
+
+ returnCode(copywin(s, d,
+ sminrow, smincol,
+ dminrow, dmincol,
+ dmaxrow, dmaxcol,
+ flag));
+ }
+ }
}
/*
**
**/
-int overlay(const WINDOW *win1, WINDOW *win2)
+NCURSES_EXPORT(int)
+overlay(const WINDOW *win1, WINDOW *win2)
{
- T((T_CALLED("overlay(%p,%p)"), win1, win2));
- returnCode(overlap(win1, win2, TRUE));
+ T((T_CALLED("overlay(%p,%p)"), win1, win2));
+ returnCode(overlap(win1, win2, TRUE));
}
/*
**
**/
-int overwrite(const WINDOW *win1, WINDOW *win2)
+NCURSES_EXPORT(int)
+overwrite(const WINDOW *win1, WINDOW *win2)
{
- T((T_CALLED("overwrite(%p,%p)"), win1, win2));
- returnCode(overlap(win1, win2, FALSE));
+ T((T_CALLED("overwrite(%p,%p)"), win1, win2));
+ returnCode(overlap(win1, win2, FALSE));
}
-int copywin(const WINDOW *src, WINDOW *dst,
+NCURSES_EXPORT(int)
+copywin(const WINDOW *src, WINDOW *dst,
int sminrow, int smincol,
- int dminrow, int dmincol, int dmaxrow, int dmaxcol,
+ int dminrow, int dmincol,
+ int dmaxrow, int dmaxcol,
int over)
{
-int sx, sy, dx, dy;
-bool touched;
-chtype bk = AttrOf(dst->_bkgd);
-chtype mask = ~(chtype)((bk&A_COLOR) ? A_COLOR : 0);
-
- 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);
+ 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);
+
+ 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;
+ }
+ }
}
-
- 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 ((TextOf(src->_line[sy].text[sx]) != ' ') &&
- (dst->_line[dy].text[dx]!=src->_line[sy].text[sx]))
- {
- dst->_line[dy].text[dx] =
- (src->_line[sy].text[sx] & mask) | bk;
- touched = TRUE;
- }
- }
- else {
- if (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,0,getmaxy(dst));
- }
+ if (touched) {
+ touchline(dst, dminrow, (dmaxrow - dminrow + 1));
}
- T(("finished copywin"));
- returnCode(OK);
+ }
+ T(("finished copywin"));
+ returnCode(OK);
}
projects / ncurses.git / blobdiff