/****************************************************************************
- * Copyright (c) 1998-2006,2007 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2013,2016 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 *
#include <curses.priv.h>
-MODULE_ID("$Id: lib_overlay.c,v 1.23 2007/04/07 17:13:52 tom Exp $")
+MODULE_ID("$Id: lib_overlay.c,v 1.32 2016/05/28 23:11:26 tom Exp $")
static int
-overlap(const WINDOW *const s, WINDOW *const d, int const flag)
+overlap(const WINDOW *const src, WINDOW *const dst, int const flag)
{
- int sx1, sy1, sx2, sy2;
- int dx1, dy1, dx2, dy2;
- int sminrow, smincol;
- int dminrow, dmincol;
- int dmaxrow, dmaxcol;
+ int rc = ERR;
- T((T_CALLED("overlap(%p,%p,%d)"), s, d, flag));
+ T((T_CALLED("overlap(%p,%p,%d)"), (const void *) src, (void *) dst, flag));
+
+ if (src != 0 && dst != 0) {
+ int sx1, sy1, sx2, sy2;
+ int dx1, dy1, dx2, dy2;
+
+ _nc_lock_global(curses);
- if (s == 0 || d == 0) {
- returnCode(ERR);
- } else {
T(("src : begy %ld, begx %ld, maxy %ld, maxx %ld",
- (long) s->_begy,
- (long) s->_begx,
- (long) s->_maxy,
- (long) s->_maxx));
+ (long) src->_begy,
+ (long) src->_begx,
+ (long) src->_maxy,
+ (long) src->_maxx));
T(("dst : begy %ld, begx %ld, maxy %ld, maxx %ld",
- (long) d->_begy,
- (long) d->_begx,
- (long) d->_maxy,
- (long) 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));
+ (long) dst->_begy,
+ (long) dst->_begx,
+ (long) dst->_maxy,
+ (long) dst->_maxx));
+
+ sx1 = src->_begx;
+ sy1 = src->_begy;
+ sx2 = sx1 + src->_maxx;
+ sy2 = sy1 + src->_maxy;
+
+ dx1 = dst->_begx;
+ dy1 = dst->_begy;
+ dx2 = dx1 + dst->_maxx;
+ dy2 = dy1 + dst->_maxy;
+
+ if (dx2 >= sx1 && dx1 <= sx2 && dy2 >= sy1 && dy1 <= sy2) {
+ int sminrow = max(sy1, dy1) - sy1;
+ int smincol = max(sx1, dx1) - sx1;
+ int dminrow = max(sy1, dy1) - dy1;
+ int dmincol = max(sx1, dx1) - dx1;
+ int dmaxrow = min(sy2, dy2) - dy1;
+ int dmaxcol = min(sx2, dx2) - dx1;
+
+ rc = copywin(src, dst,
+ sminrow, smincol,
+ dminrow, dmincol,
+ dmaxrow, dmaxcol,
+ flag);
}
+ _nc_unlock_global(curses);
}
+ returnCode(rc);
}
/*
NCURSES_EXPORT(int)
overlay(const WINDOW *win1, WINDOW *win2)
{
- T((T_CALLED("overlay(%p,%p)"), win1, win2));
+ T((T_CALLED("overlay(%p,%p)"), (const void *) win1, (void *) win2));
returnCode(overlap(win1, win2, TRUE));
}
NCURSES_EXPORT(int)
overwrite(const WINDOW *win1, WINDOW *win2)
{
- T((T_CALLED("overwrite(%p,%p)"), win1, win2));
+ T((T_CALLED("overwrite(%p,%p)"), (const void *) win1, (void *) win2));
returnCode(overlap(win1, win2, FALSE));
}
int dmaxrow, int dmaxcol,
int over)
{
- int sx, sy, dx, dy;
- bool touched;
- attr_t bk;
- attr_t mask;
+ int rc = ERR;
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);
-
- bk = AttrOf(dst->_nc_bkgd);
- mask = ~(attr_t) ((bk & A_COLOR) ? A_COLOR : 0);
-
- /* 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;
+ (const void *) src,
+ (void *) dst,
+ sminrow, smincol,
+ dminrow, dmincol,
+ dmaxrow, dmaxcol, over));
+
+ if (src != 0
+ && dst != 0
+ && dmaxrow >= dminrow
+ && dmaxcol >= dmincol) {
+ attr_t bk;
+ attr_t mask;
+
+ _nc_lock_global(curses);
+
+ bk = AttrOf(dst->_nc_bkgd);
+ mask = ~(attr_t) ((bk & A_COLOR) ? A_COLOR : 0);
+
+ /* make sure rectangle exists in source */
+ if ((sminrow + dmaxrow - dminrow) <= (src->_maxy + 1) &&
+ (smincol + dmaxcol - dmincol) <= (src->_maxx + 1)) {
+
+ T(("rectangle exists in source"));
+
+ /* make sure rectangle fits in destination */
+ if (dmaxrow <= dst->_maxy && dmaxcol <= dst->_maxx) {
+ int sx, sy, dx, dy;
+ bool copied = FALSE;
+
+ T(("rectangle fits in destination"));
+
+ for (dy = dminrow, sy = sminrow;
+ dy <= dmaxrow;
+ sy++, dy++) {
+ bool touched;
+
+ if (dy < 0 || sy < 0)
+ continue;
+
+ touched = FALSE;
+ for (dx = dmincol, sx = smincol;
+ dx <= dmaxcol;
+ sx++, dx++) {
+
+ if (dx < 0 || sx < 0)
+ continue;
+ copied = TRUE;
+
+ 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;
+ }
+ }
+ }
+ if (touched) {
+ touchline(dst, dminrow, (dmaxrow - dminrow + 1));
+ }
}
+ T(("finished copywin"));
+ if (copied)
+ rc = OK;
}
}
- if (touched) {
- touchline(dst, dminrow, (dmaxrow - dminrow + 1));
- }
+ _nc_unlock_global(curses);
}
- T(("finished copywin"));
- returnCode(OK);
+ returnCode(rc);
}
projects / ncurses.git / blobdiff