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Add command line switches to disable pointer and touch

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I am using a wireless keyboard with an integrated touchpad.
I do neither need nor want the touchpad, but I am unable to
attach the keyboard only (without the pointer device) to my
computer. I therefore find it convenient to simply disable
that device when starting `cage`. The switch for disabling
touch input is there for consistency. Maybe it comes in handy
to someone else at some point.

I don't have any previous experience with wayland, so there is
a chance that I simply missed some environment variable that
accomplishes the same. In this case, this commit would be
unnecessary.

The command line switches `P` and `T` are quite ad-hoc. I probably
would have gone for `--disable-pointer` and `--disable-touch` if
long command line switches had already been in use. If someone has
a better idea than `P` and `T`, please suggest it.
This commit is contained in:
Frank Seifferth 2021-02-28 14:06:17 +01:00
parent efaf76e9ab
commit 4934225759
4 changed files with 24 additions and 4 deletions
Download patch file Download diff file Expand all files Collapse all files

8
cage.1.scd
View file

@ -27,6 +27,11 @@ activities outside the scope of the running application are prevented.
*last* Cage uses only the last connected monitor.
*extend* Cage extends the display across all connected monitors.
*-P*
Disable pointer device. This comes in handy if a pointer device
is attached to the computer running *cage*, but undesirable for
application.
*-r*
Rotate the output 90 degrees clockwise. This can be specified up to three
times, each resulting in an additional 90 degrees clockwise rotation.
@ -34,6 +39,9 @@ activities outside the scope of the running application are prevented.
*-s*
Allow VT switching
*-T*
Disable touch device. Like *-P*, but for touchscreens.
*-v*
Show the version number and exit.

12
cage.c
View file

@ -191,9 +191,11 @@ usage(FILE *file, const char *cage)
" -h\t Display this help message\n"
" -m extend Extend the display across all connected outputs (default)\n"
" -m last Use only the last connected output\n"
" -P\t Disable pointer input\n"
" -r\t Rotate the output 90 degrees clockwise, specify up to three times\n"
" -s\t Allow VT switching\n"
" -v\t Show the version number and exit\n"
" -T\t Disable touch input\n"
"\n"
" Use -- when you want to pass arguments to APPLICATION\n",
cage);
@ -204,9 +206,9 @@ parse_args(struct cg_server *server, int argc, char *argv[])
{
int c;
#ifdef DEBUG
while ((c = getopt(argc, argv, "dDhm:rsv")) != -1) {
while ((c = getopt(argc, argv, "dDhm:rsvPT")) != -1) {
#else
while ((c = getopt(argc, argv, "dhm:rsv")) != -1) {
while ((c = getopt(argc, argv, "dhm:rsvPT")) != -1) {
#endif
switch (c) {
case 'd':
@ -236,6 +238,12 @@ parse_args(struct cg_server *server, int argc, char *argv[])
case 's':
server->allow_vt_switch = true;
break;
case 'P':
server->disable_pointer = true;
break;
case 'T':
server->disable_touch = true;
break;
case 'v':
fprintf(stdout, "Cage version " CAGE_VERSION "\n");
exit(0);

6
seat.c
View file

@ -390,10 +390,12 @@ handle_new_input(struct wl_listener *listener, void *data)
handle_new_keyboard(seat, device);
break;
case WLR_INPUT_DEVICE_POINTER:
handle_new_pointer(seat, device);
if(!seat->server->disable_pointer)
handle_new_pointer(seat, device);
break;
case WLR_INPUT_DEVICE_TOUCH:
handle_new_touch(seat, device);
if(!seat->server->disable_touch)
handle_new_touch(seat, device);
break;
case WLR_INPUT_DEVICE_SWITCH:
wlr_log(WLR_DEBUG, "Switch input is not implemented");

2
server.h
View file

@ -47,6 +47,8 @@ struct cg_server {
bool xdg_decoration;
bool allow_vt_switch;
bool disable_pointer;
bool disable_touch;
enum wl_output_transform output_transform;
#ifdef DEBUG
bool debug_damage_tracking;