void FreeAltScreen(Window *p)
{
int i;
if (p->w_alt.mlines) {
for (i = 0; i < p->w_alt.height; i++)
FreeMline(p->w_alt.mlines + i);
free(p->w_alt.mlines);
}
p->w_alt.mlines = 0;
p->w_alt.width = 0;
p->w_alt.height = 0;
if (p->w_alt.hlines) {
for (i = 0; i < p->w_alt.histheight; i++)
FreeMline(p->w_alt.hlines + i);
free(p->w_alt.hlines);
}
p->w_alt.hlines = 0;
p->w_alt.histidx = 0;
p->w_alt.histheight = 0;
}
int ChangeWindowSize(Window *p, int wi, int he, int hi)
{
struct mline *mlf = 0, *mlt = 0, *ml, *nmlines, *nhlines;
int fy, ty, l, lx, lf, lt, yy, oty, addone;
int ncx, ncy, naka, t;
int y, shift;
if (wi <= 0 || he <= 0)
wi = he = hi = 0;
if (p->w_type == W_TYPE_GROUP)
return 0;
if (wi > MAXWIDTH) {
Msg(0, "Window width too large. Truncated to %d.", MAXWIDTH);
wi = MAXWIDTH;
}
if (he > MAXWIDTH) {
Msg(0, "Window height too large. Truncated to %d.", MAXWIDTH);
he = MAXWIDTH;
}
if (p->w_width == wi && p->w_height == he && p->w_histheight == hi) {
return 0;
}
CheckMaxSize(wi);
fy = p->w_histheight + p->w_height - 1;
ty = hi + he - 1;
nmlines = nhlines = 0;
ncx = 0;
ncy = 0;
naka = 0;
if (wi) {
if (wi != p->w_width || he != p->w_height) {
if ((nmlines = calloc(he, sizeof(struct mline))) == 0) {
KillWindow(p);
Msg(0, "%s", strnomem);
return -1;
}
} else {
nmlines = p->w_mlines;
fy -= he;
ty -= he;
ncx = p->w_x;
ncy = p->w_y;
naka = p->w_autoaka;
}
}
if (hi) {
if ((nhlines = calloc(hi, sizeof(struct mline))) == 0) {
Msg(0, "No memory for history buffer - turned off");
hi = 0;
ty = he - 1;
}
}
/* special case: cursor is at magic margin position */
addone = 0;
if (p->w_width && p->w_x == p->w_width) {
addone = 1;
p->w_x--;
}
/* handle the cursor and autoaka lines now if the widths are equal */
if (p->w_width == wi) {
ncx = p->w_x + addone;
ncy = p->w_y + he - p->w_height;
/* never lose sight of the line with the cursor on it */
shift = -ncy;
for (yy = p->w_y + p->w_histheight - 1; yy >= 0 && ncy + shift < he; yy--) {
ml = OLDWIN(yy);
if (!ml->image)
break;
if (ml->image[p->w_width] == ' ')
break;
shift++;
}
if (shift < 0)
shift = 0;
ncy += shift;
if (p->w_autoaka > 0) {
naka = p->w_autoaka + he - p->w_height + shift;
if (naka < 1 || naka > he)
naka = 0;
}
while (shift-- > 0) {
ml = OLDWIN(fy);
FreeMline(ml);
fy--;
}
}
if (fy >= 0)
mlf = OLDWIN(fy);
if (ty >= 0)
mlt = NEWWIN(ty);
while (fy >= 0 && ty >= 0) {
if (p->w_width == wi) {
/* here is a simple shortcut: just copy over */
*mlt = *mlf;
*mlf = mline_zero;
if (--fy >= 0)
mlf = OLDWIN(fy);
if (--ty >= 0)
mlt = NEWWIN(ty);
continue;
}
/* calculate lenght */
for (l = p->w_width - 1; l > 0; l--)
if (mlf->image[l] != ' ' || mlf->attr[l])
break;
if (fy == p->w_y + p->w_histheight && l < p->w_x)
l = p->w_x; /* cursor is non blank */
l++;
lf = l;
/* add wrapped lines to length */
for (yy = fy - 1; yy >= 0; yy--) {
ml = OLDWIN(yy);
if (ml->image[p->w_width] == ' ')
break;
l += p->w_width;
}
/* rewrap lines */
lt = (l - 1) % wi + 1; /* lf is set above */
oty = ty;
while (l > 0 && fy >= 0 && ty >= 0) {
lx = lt > lf ? lf : lt;
if (mlt->image == 0) {
if (AllocMline(mlt, wi + 1))
goto nomem;
MakeBlankLine(mlt->image + lt, wi - lt);
mlt->image[wi] = ((oty == ty) ? ' ' : 0);
}
if (BcopyMline(mlf, lf - lx, mlt, lt - lx, lx, wi + 1))
goto nomem;
/* did we copy the cursor ? */
if (fy == p->w_y + p->w_histheight && lf - lx <= p->w_x && lf > p->w_x) {
ncx = p->w_x + lt - lf + addone;
ncy = ty - hi;
shift = wi ? -ncy + (l - lx) / wi : 0;
if (ty + shift > hi + he - 1)
shift = hi + he - 1 - ty;
if (shift > 0) {
for (y = hi + he - 1; y >= ty; y--) {
mlt = NEWWIN(y);
FreeMline(mlt);
if (y - shift < ty)
continue;
ml = NEWWIN(y - shift);
*mlt = *ml;
*ml = mline_zero;
}
ncy += shift;
ty += shift;
mlt = NEWWIN(ty);
if (naka > 0)
naka = naka + shift > he ? 0 : naka + shift;
}
}
/* did we copy autoaka line ? */
if (p->w_autoaka > 0 && fy == p->w_autoaka - 1 + p->w_histheight && lf - lx <= 0)
naka = ty - hi >= 0 ? 1 + ty - hi : 0;
lf -= lx;
lt -= lx;
l -= lx;
if (lf == 0) {
FreeMline(mlf);
lf = p->w_width;
if (--fy >= 0)
mlf = OLDWIN(fy);
}
if (lt == 0) {
lt = wi;
if (--ty >= 0)
mlt = NEWWIN(ty);
}
}
}
while (fy >= 0) {
FreeMline(mlf);
if (--fy >= 0)
mlf = OLDWIN(fy);
}
while (ty >= 0) {
if (AllocMline(mlt, wi + 1))
goto nomem;
MakeBlankLine(mlt->image, wi + 1);
if (--ty >= 0)
mlt = NEWWIN(ty);
}
if (p->w_mlines && p->w_mlines != nmlines)
free((char *)p->w_mlines);
p->w_mlines = nmlines;
if (p->w_hlines && p->w_hlines != nhlines)
free((char *)p->w_hlines);
p->w_hlines = nhlines;
/* change tabs */
if (p->w_width != wi) {
if (wi) {
t = p->w_tabs ? p->w_width : 0;
p->w_tabs = xrealloc(p->w_tabs, (wi + 1) * 4);
if (p->w_tabs == 0) {
nomem:
if (nmlines) {
for (ty = he + hi - 1; ty >= 0; ty--) {
mlt = NEWWIN(ty);
FreeMline(mlt);
}
if (nmlines && p->w_mlines != nmlines)
free((char *)nmlines);
if (nhlines && p->w_hlines != nhlines)
free((char *)nhlines);
}
KillWindow(p);
Msg(0, "%s", strnomem);
if (nmlines)
free(nmlines);
if (nhlines)
free(nhlines);
return -1;
}
for (; t < wi; t++)
p->w_tabs[t] = t && !(t & 7) ? 1 : 0;
p->w_tabs[wi] = 0;
} else {
if (p->w_tabs)
free(p->w_tabs);
p->w_tabs = 0;
}
}
/* Change w_saved.y - this is only an estimate... */
p->w_saved.y += ncy - p->w_y;
p->w_x = ncx;
p->w_y = ncy;
if (p->w_autoaka > 0)
p->w_autoaka = naka;
/* do sanity checks */
if (p->w_x > wi)
p->w_x = wi;
if (p->w_y >= he)
p->w_y = he - 1;
if (p->w_saved.x > wi)
p->w_saved.x = wi;
if (p->w_saved.y >= he)
p->w_saved.y = he - 1;
if (p->w_saved.y < 0)
p->w_saved.y = 0;
if (p->w_alt.cursor.x > wi)
p->w_alt.cursor.x = wi;
if (p->w_alt.cursor.y >= he)
p->w_alt.cursor.y = he - 1;
if (p->w_alt.cursor.y < 0)
p->w_alt.cursor.y = 0;
/* reset scrolling region */
p->w_top = 0;
p->w_bot = he - 1;
/* signal new size to window */
if (wi && (p->w_width != wi || p->w_height != he)
&& p->w_width != 0 && p->w_height != 0 && p->w_ptyfd >= 0 && p->w_pid) {
glwz.ws_col = wi;
glwz.ws_row = he;
ioctl(p->w_ptyfd, TIOCSWINSZ, (char *)&glwz);
}
/* store new size */
p->w_width = wi;
p->w_height = he;
p->w_histidx = 0;
p->w_histheight = hi;
#ifdef ENABLE_TELNET
if (p->w_type == W_TYPE_TELNET)
TelWindowSize(p);
#endif
return 0;
}
int
ChangeWindowSize(struct win *p, int wi, int he, int hi)
{
struct mline *mlf = 0, *mlt = 0, *ml, *nmlines, *nhlines;
int fy, ty, l, lx, lf, lt, yy, oty, addone;
int ncx, ncy, naka, t;
int y, shift;
if (wi <= 0 || he <= 0)
wi = he = hi = 0;
if (p->w_type == W_TYPE_GROUP)
return 0;
if (wi > 1000)
{
Msg(0, "Window width too large. Truncated to 1000.");
wi = 1000;
}
if (he > 1000)
{
Msg(0, "Window height too large. Truncated to 1000.");
he = 1000;
}
if (p->w_width == wi && p->w_height == he && p->w_histheight == hi)
{
debug("ChangeWindowSize: No change.\n");
return 0;
}
CheckMaxSize(wi);
debug("ChangeWindowSize");
debug3(" from (%d,%d)+%d", p->w_width, p->w_height, p->w_histheight);
debug3(" to(%d,%d)+%d\n", wi, he, hi);
fy = p->w_histheight + p->w_height - 1;
ty = hi + he - 1;
nmlines = nhlines = 0;
ncx = 0;
ncy = 0;
naka = 0;
if (wi)
{
if (wi != p->w_width || he != p->w_height)
{
if ((nmlines = (struct mline *)calloc(he, sizeof(struct mline))) == 0)
{
KillWindow(p);
Msg(0, "%s", strnomem);
return -1;
}
}
else
{
debug1("image stays the same: %d lines\n", he);
nmlines = p->w_mlines;
fy -= he;
ty -= he;
ncx = p->w_x;
ncy = p->w_y;
naka = p->w_autoaka;
}
}
if (hi)
{
if ((nhlines = (struct mline *)calloc(hi, sizeof(struct mline))) == 0)
{
Msg(0, "No memory for history buffer - turned off");
hi = 0;
ty = he - 1;
}
}
/* special case: cursor is at magic margin position */
addone = 0;
if (p->w_width && p->w_x == p->w_width)
{
debug2("Special addone case: %d %d\n", p->w_x, p->w_y);
addone = 1;
p->w_x--;
}
/* handle the cursor and autoaka lines now if the widths are equal */
if (p->w_width == wi)
{
ncx = p->w_x + addone;
ncy = p->w_y + he - p->w_height;
/* never lose sight of the line with the cursor on it */
shift = -ncy;
for (yy = p->w_y + p->w_histheight - 1; yy >= 0 && ncy + shift < he; yy--)
{
ml = OLDWIN(yy);
if (ml->image[p->w_width] == ' ')
break;
shift++;
}
if (shift < 0)
shift = 0;
else
debug1("resize: cursor out of bounds, shifting %d\n", shift);
ncy += shift;
if (p->w_autoaka > 0)
{
naka = p->w_autoaka + he - p->w_height + shift;
if (naka < 1 || naka > he)
naka = 0;
}
while (shift-- > 0)
{
ml = OLDWIN(fy);
FreeMline(ml);
fy--;
}
}
debug2("fy %d ty %d\n", fy, ty);
if (fy >= 0)
mlf = OLDWIN(fy);
if (ty >= 0)
mlt = NEWWIN(ty);
while (fy >= 0 && ty >= 0)
{
if (p->w_width == wi)
{
/* here is a simple shortcut: just copy over */
*mlt = *mlf;
*mlf = mline_zero;
if (--fy >= 0)
mlf = OLDWIN(fy);
if (--ty >= 0)
mlt = NEWWIN(ty);
continue;
}
/* calculate lenght */
for (l = p->w_width - 1; l > 0; l--)
if (mlf->image[l] != ' ' || mlf->attr[l])
break;
if (fy == p->w_y + p->w_histheight && l < p->w_x)
l = p->w_x; /* cursor is non blank */
l++;
lf = l;
/* add wrapped lines to length */
for (yy = fy - 1; yy >= 0; yy--)
{
ml = OLDWIN(yy);
if (ml->image[p->w_width] == ' ')
break;
l += p->w_width;
}
/* rewrap lines */
lt = (l - 1) % wi + 1; /* lf is set above */
oty = ty;
while (l > 0 && fy >= 0 && ty >= 0)
{
lx = lt > lf ? lf : lt;
if (mlt->image == 0)
{
if (AllocMline(mlt, wi + 1))
goto nomem;
MakeBlankLine(mlt->image + lt, wi - lt);
mlt->image[wi] = ((oty == ty) ? ' ' : 0);
}
if (BcopyMline(mlf, lf - lx, mlt, lt - lx, lx, wi + 1))
goto nomem;
/* did we copy the cursor ? */
if (fy == p->w_y + p->w_histheight && lf - lx <= p->w_x && lf > p->w_x)
{
ncx = p->w_x + lt - lf + addone;
ncy = ty - hi;
shift = wi ? -ncy + (l - lx) / wi : 0;
if (ty + shift > hi + he - 1)
shift = hi + he - 1 - ty;
if (shift > 0)
{
debug3("resize: cursor out of bounds, shifting %d [%d/%d]\n", shift, lt - lx, wi);
for (y = hi + he - 1; y >= ty; y--)
{
mlt = NEWWIN(y);
FreeMline(mlt);
if (y - shift < ty)
continue;
ml = NEWWIN(y - shift);
*mlt = *ml;
*ml = mline_zero;
}
ncy += shift;
ty += shift;
mlt = NEWWIN(ty);
if (naka > 0)
naka = naka + shift > he ? 0 : naka + shift;
}
ASSERT(ncy >= 0);
}
/* did we copy autoaka line ? */
if (p->w_autoaka > 0 && fy == p->w_autoaka - 1 + p->w_histheight && lf - lx <= 0)
naka = ty - hi >= 0 ? 1 + ty - hi : 0;
lf -= lx;
lt -= lx;
l -= lx;
if (lf == 0)
{
FreeMline(mlf);
lf = p->w_width;
if (--fy >= 0)
mlf = OLDWIN(fy);
}
if (lt == 0)
{
lt = wi;
if (--ty >= 0)
mlt = NEWWIN(ty);
}
}
ASSERT(l != 0 || fy == yy);
}
while (fy >= 0)
{
FreeMline(mlf);
if (--fy >= 0)
mlf = OLDWIN(fy);
}
while (ty >= 0)
{
if (AllocMline(mlt, wi + 1))
goto nomem;
MakeBlankLine(mlt->image, wi + 1);
if (--ty >= 0)
mlt = NEWWIN(ty);
}
#ifdef DEBUG
if (nmlines != p->w_mlines)
for (fy = 0; fy < p->w_height + p->w_histheight; fy++)
{
ml = OLDWIN(fy);
ASSERT(ml->image == 0);
}
#endif
if (p->w_mlines && p->w_mlines != nmlines)
free((char *)p->w_mlines);
p->w_mlines = nmlines;
if (p->w_hlines && p->w_hlines != nhlines)
free((char *)p->w_hlines);
p->w_hlines = nhlines;
nmlines = nhlines = 0;
/* change tabs */
if (p->w_width != wi)
{
if (wi)
{
t = p->w_tabs ? p->w_width : 0;
p->w_tabs = xrealloc(p->w_tabs, wi + 1);
if (p->w_tabs == 0)
{
nomem:
if (nmlines)
{
for (ty = he + hi - 1; ty >= 0; ty--)
{
mlt = NEWWIN(ty);
FreeMline(mlt);
}
if (nmlines && p->w_mlines != nmlines)
free((char *)nmlines);
if (nhlines && p->w_hlines != nhlines)
free((char *)nhlines);
}
KillWindow(p);
Msg(0, "%s", strnomem);
return -1;
}
for (; t < wi; t++)
p->w_tabs[t] = t && !(t & 7) ? 1 : 0;
p->w_tabs[wi] = 0;
}
else
{
if (p->w_tabs)
free(p->w_tabs);
p->w_tabs = 0;
}
}
/* Change w_saved.y - this is only an estimate... */
p->w_saved.y += ncy - p->w_y;
p->w_x = ncx;
p->w_y = ncy;
if (p->w_autoaka > 0)
p->w_autoaka = naka;
/* do sanity checks */
if (p->w_x > wi)
p->w_x = wi;
if (p->w_y >= he)
p->w_y = he - 1;
if (p->w_saved.x > wi)
p->w_saved.x = wi;
if (p->w_saved.y < 0)
p->w_saved.y = 0;
if (p->w_saved.y >= he)
p->w_saved.y = he - 1;
if (p->w_alt.cursor.x > wi)
p->w_alt.cursor.x = wi;
if (p->w_alt.cursor.y >= he)
p->w_alt.cursor.y = he - 1;
/* reset scrolling region */
p->w_top = 0;
p->w_bot = he - 1;
/* signal new size to window */
#ifdef TIOCSWINSZ
if (wi && (p->w_width != wi || p->w_height != he)
&& p->w_width != 0 && p->w_height != 0 && p->w_ptyfd >= 0 && p->w_pid)
{
glwz.ws_col = wi;
glwz.ws_row = he;
debug("Setting pty winsize.\n");
if (ioctl(p->w_ptyfd, TIOCSWINSZ, (char *)&glwz))
debug2("SetPtySize: errno %d (fd:%d)\n", errno, p->w_ptyfd);
}
#endif /* TIOCSWINSZ */
/* store new size */
p->w_width = wi;
p->w_height = he;
p->w_histidx = 0;
p->w_histheight = hi;
#ifdef DEBUG
/* Test if everything was ok */
for (fy = 0; fy < p->w_height + p->w_histheight; fy++)
{
ml = OLDWIN(fy);
ASSERT(ml->image);
if (p->w_encoding == UTF8)
{
for (l = 0; l < p->w_width; l++)
ASSERT(ml->image[l] >= ' ' || ml->font[l]);
}
else
for (l = 0; l < p->w_width; l++)
ASSERT(ml->image[l] >= ' ');
}
#endif
return 0;
}
