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Allow control mode clients to set a hard limit on the window width and

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height, GitHub issue 2594.
This commit is contained in:
nicm 2021-08-27 17:15:57 +00:00
parent 24636be42b
commit fd756a150b
7 changed files with 174 additions and 44 deletions
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72
cmd-refresh-client.c
View File

@ -77,6 +77,58 @@ out:
free(copy);
}
static enum cmd_retval
cmd_refresh_client_control_client_size(struct cmd *self, struct cmdq_item *item)
{
struct args *args = cmd_get_args(self);
struct client *tc = cmdq_get_target_client(item);
const char *size = args_get(args, 'C');
u_int w, x, y;
struct client_window *cw;
if (sscanf(size, "@%u:%ux%u", &w, &x, &y) == 3) {
if (x < WINDOW_MINIMUM || x > WINDOW_MAXIMUM ||
y < WINDOW_MINIMUM || y > WINDOW_MAXIMUM) {
cmdq_error(item, "size too small or too big");
return (CMD_RETURN_ERROR);
}
log_debug("%s: client %s window @%u: size %ux%u", __func__,
tc->name, w, x, y);
cw = server_client_add_client_window(tc, w);
cw->sx = x;
cw->sy = y;
tc->flags |= CLIENT_WINDOWSIZECHANGED;
recalculate_sizes_now(1);
return (CMD_RETURN_NORMAL);
}
if (sscanf(size, "@%u:", &w) == 1) {
cw = server_client_get_client_window(tc, w);
if (cw != NULL) {
log_debug("%s: client %s window @%u: no size", __func__,
tc->name, w);
cw->sx = 0;
cw->sy = 0;
recalculate_sizes_now(1);
}
return (CMD_RETURN_NORMAL);
}
if (sscanf(size, "%u,%u", &x, &y) != 2 &&
sscanf(size, "%ux%u", &x, &y) != 2) {
cmdq_error(item, "bad size argument");
return (CMD_RETURN_ERROR);
}
if (x < WINDOW_MINIMUM || x > WINDOW_MAXIMUM ||
y < WINDOW_MINIMUM || y > WINDOW_MAXIMUM) {
cmdq_error(item, "size too small or too big");
return (CMD_RETURN_ERROR);
}
tty_set_size(&tc->tty, x, y, 0, 0);
tc->flags |= CLIENT_SIZECHANGED;
recalculate_sizes_now(1);
return (CMD_RETURN_NORMAL);
}
static void
cmd_refresh_client_update_offset(struct client *tc, const char *value)
{
@ -117,8 +169,8 @@ cmd_refresh_client_exec(struct cmd *self, struct cmdq_item *item)
struct client *tc = cmdq_get_target_client(item);
struct tty *tty = &tc->tty;
struct window *w;
const char *size, *errstr;
u_int x, y, adjust;
const char *errstr;
u_int adjust;
struct args_value *av;
if (args_has(args, 'c') ||
@ -205,21 +257,7 @@ cmd_refresh_client_exec(struct cmd *self, struct cmdq_item *item)
if (args_has(args, 'C')) {
if (~tc->flags & CLIENT_CONTROL)
goto not_control_client;
size = args_get(args, 'C');
if (sscanf(size, "%u,%u", &x, &y) != 2 &&
sscanf(size, "%ux%u", &x, &y) != 2) {
cmdq_error(item, "bad size argument");
return (CMD_RETURN_ERROR);
}
if (x < WINDOW_MINIMUM || x > WINDOW_MAXIMUM ||
y < WINDOW_MINIMUM || y > WINDOW_MAXIMUM) {
cmdq_error(item, "size too small or too big");
return (CMD_RETURN_ERROR);
}
tty_set_size(&tc->tty, x, y, 0, 0);
tc->flags |= CLIENT_SIZECHANGED;
recalculate_sizes_now(1);
return (CMD_RETURN_NORMAL);
return (cmd_refresh_client_control_client_size(self, item));
}
if (args_has(args, 'S')) {

4
cmd-resize-window.c
View File

@ -108,7 +108,9 @@ cmd_resize_window_exec(struct cmd *self, struct cmdq_item *item)
}
options_set_number(w->options, "window-size", WINDOW_SIZE_MANUAL);
resize_window(w, sx, sy, xpixel, ypixel);
w->manual_sx = sx;
w->manual_sy = sy;
recalculate_size(w, 1);
return (CMD_RETURN_NORMAL);
}

93
resize.c
View File

@ -87,7 +87,9 @@ ignore_client_size(struct client *c)
return (1);
}
}
if ((c->flags & CLIENT_CONTROL) && (~c->flags & CLIENT_SIZECHANGED))
if ((c->flags & CLIENT_CONTROL) &&
(~c->flags & CLIENT_SIZECHANGED) &&
(~c->flags & CLIENT_WINDOWSIZECHANGED))
return (1);
return (0);
}
@ -113,23 +115,25 @@ clients_calculate_size(int type, int current, struct client *c,
int, int, struct session *, struct window *), u_int *sx, u_int *sy,
u_int *xpixel, u_int *ypixel)
{
struct client *loop;
u_int cx, cy, n = 0;
/* Manual windows do not have their size changed based on a client. */
if (type == WINDOW_SIZE_MANUAL) {
log_debug("%s: type is manual", __func__);
return (0);
}
struct client *loop;
struct client_window *cw;
u_int cx, cy, n = 0;
/*
* Start comparing with 0 for largest and UINT_MAX for smallest or
* latest.
*/
if (type == WINDOW_SIZE_LARGEST)
*sx = *sy = 0;
else
*sx = *sy = UINT_MAX;
if (type == WINDOW_SIZE_LARGEST) {
*sx = 0;
*sy = 0;
} else if (type == WINDOW_SIZE_MANUAL) {
*sx = w->manual_sx;
*sy = w->manual_sy;
log_debug("%s: manual size %ux%u", __func__, *sx, *sy);
} else {
*sx = UINT_MAX;
*sy = UINT_MAX;
}
*xpixel = *ypixel = 0;
/*
@ -139,14 +143,18 @@ clients_calculate_size(int type, int current, struct client *c,
if (type == WINDOW_SIZE_LATEST && w != NULL)
n = clients_with_window(w);
/* Skip setting the size if manual */
if (type == WINDOW_SIZE_MANUAL)
goto skip;
/* Loop over the clients and work out the size. */
TAILQ_FOREACH(loop, &clients, entry) {
if (loop != c && ignore_client_size(loop)) {
log_debug("%s: ignoring %s", __func__, loop->name);
log_debug("%s: ignoring %s (1)", __func__, loop->name);
continue;
}
if (loop != c && skip_client(loop, type, current, s, w)) {
log_debug("%s: skipping %s", __func__, loop->name);
log_debug("%s: skipping %s (1)", __func__, loop->name);
continue;
}
@ -160,9 +168,23 @@ clients_calculate_size(int type, int current, struct client *c,
continue;
}
/*
* If the client has a per-window size, use this instead if it is
* smaller.
*/
if (w != NULL)
cw = server_client_get_client_window(loop, w->id);
else
cw = NULL;
/* Work out this client's size. */
cx = loop->tty.sx;
cy = loop->tty.sy - status_line_size(loop);
if (cw != NULL) {
cx = cw->sx;
cy = cw->sy;
} else {
cx = loop->tty.sx;
cy = loop->tty.sy - status_line_size(loop);
}
/*
* If it is larger or smaller than the best so far, update the
@ -191,7 +213,44 @@ clients_calculate_size(int type, int current, struct client *c,
else
log_debug("%s: no calculated size", __func__);
skip:
/*
* Do not allow any size to be larger than the per-client window size
* if one exists.
*/
if (w != NULL) {
TAILQ_FOREACH(loop, &clients, entry) {
if (loop != c && ignore_client_size(loop))
continue;
if (loop != c && skip_client(loop, type, current, s, w))
continue;
/* Look up per-window size if any. */
if (~loop->flags & CLIENT_WINDOWSIZECHANGED)
continue;
cw = server_client_get_client_window(loop, w->id);
if (cw == NULL)
continue;
/* Clamp the size. */
log_debug("%s: %s size for @%u is %ux%u", __func__,
loop->name, w->id, cw->sx, cw->sy);
if (cw->sx != 0 && *sx > cw->sx)
*sx = cw->sx;
if (cw->sy != 0 && *sy > cw->sy)
*sy = cw->sy;
}
}
if (*sx != UINT_MAX && *sy != UINT_MAX)
log_debug("%s: calculated size %ux%u", __func__, *sx, *sy);
else
log_debug("%s: no calculated size", __func__);
/* Return whether a suitable size was found. */
if (type == WINDOW_SIZE_MANUAL) {
log_debug("%s: type is manual", __func__);
return (1);
}
if (type == WINDOW_SIZE_LARGEST) {
log_debug("%s: type is largest", __func__);
return (*sx != 0 && *sy != 0);

24
server-client.c
View File

@ -2443,7 +2443,7 @@ server_client_get_flags(struct client *c)
}
/* Get client window. */
static struct client_window *
struct client_window *
server_client_get_client_window(struct client *c, u_int id)
{
struct client_window cw = { .window = id };
@ -2451,6 +2451,21 @@ server_client_get_client_window(struct client *c, u_int id)
return (RB_FIND(client_windows, &c->windows, &cw));
}
/* Add client window. */
struct client_window *
server_client_add_client_window(struct client *c, u_int id)
{
struct client_window *cw;
cw = server_client_get_client_window(c, id);
if (cw == NULL) {
cw = xcalloc(1, sizeof *cw);
cw->window = id;
RB_INSERT(client_windows, &c->windows, cw);
}
return cw;
}
/* Get client active pane. */
struct window_pane *
server_client_get_pane(struct client *c)
@ -2479,12 +2494,7 @@ server_client_set_pane(struct client *c, struct window_pane *wp)
if (s == NULL)
return;
cw = server_client_get_client_window(c, s->curw->window->id);
if (cw == NULL) {
cw = xcalloc(1, sizeof *cw);
cw->window = s->curw->window->id;
RB_INSERT(client_windows, &c->windows, cw);
}
cw = server_client_add_client_window(c, s->curw->window->id);
cw->pane = wp;
log_debug("%s pane now %%%u", c->name, wp->id);
}

14
tmux.1
View File

@ -1331,7 +1331,7 @@ specified multiple times.
.Op Fl cDlLRSU
.Op Fl A Ar pane:state
.Op Fl B Ar name:what:format
.Op Fl C Ar XxY
.Op Fl C Ar size
.Op Fl f Ar flags
.Op Fl t Ar target-client
.Op Ar adjustment
@ -1375,7 +1375,17 @@ window, changing the current window in the attached session will reset
it.
.Pp
.Fl C
sets the width and height of a control mode client.
sets the width and height of a control mode client or of a window for a
control mode client,
.Ar size
must be one of
.Ql widthxheight
or
.Ql window ID:widthxheight ,
for example
.Ql 80x24
or
.Ql @0:80x24 .
.Fl A
allows a control mode client to trigger actions on a pane.
The argument is a pane ID (with leading

9
tmux.h
View File

@ -998,6 +998,8 @@ struct window {
u_int sx;
u_int sy;
u_int manual_sx;
u_int manual_sy;
u_int xpixel;
u_int ypixel;
@ -1555,6 +1557,10 @@ RB_HEAD(client_files, client_file);
struct client_window {
u_int window;
struct window_pane *pane;
u_int sx;
u_int sy;
RB_ENTRY(client_window) entry;
};
RB_HEAD(client_windows, client_window);
@ -1650,6 +1656,7 @@ struct client {
#define CLIENT_ACTIVEPANE 0x80000000ULL
#define CLIENT_CONTROL_PAUSEAFTER 0x100000000ULL
#define CLIENT_CONTROL_WAITEXIT 0x200000000ULL
#define CLIENT_WINDOWSIZECHANGED 0x400000000ULL
#define CLIENT_ALLREDRAWFLAGS \
(CLIENT_REDRAWWINDOW| \
CLIENT_REDRAWSTATUS| \
@ -2465,6 +2472,8 @@ void server_client_push_stderr(struct client *);
const char *server_client_get_cwd(struct client *, struct session *);
void server_client_set_flags(struct client *, const char *);
const char *server_client_get_flags(struct client *);
struct client_window *server_client_get_client_window(struct client *, u_int);
struct client_window *server_client_add_client_window(struct client *, u_int);
struct window_pane *server_client_get_pane(struct client *);
void server_client_set_pane(struct client *, struct window_pane *);
void server_client_remove_pane(struct window_pane *);

2
window.c
View File

@ -318,6 +318,8 @@ window_create(u_int sx, u_int sy, u_int xpixel, u_int ypixel)
w->sx = sx;
w->sy = sy;
w->manual_sx = sx;
w->manual_sy = sy;
w->xpixel = xpixel;
w->ypixel = ypixel;