static void
change_property (ClutterInputDevice *device,
const gchar *property,
Atom type,
int format,
void *data,
gulong nitems)
{
MetaBackend *backend = meta_get_backend ();
Display *xdisplay = meta_backend_x11_get_xdisplay (META_BACKEND_X11 (backend));
int device_id;
Atom property_atom;
guchar *data_ret;
property_atom = XInternAtom (xdisplay, property, False);
device_id = clutter_input_device_get_device_id (device);
data_ret = get_property (device, property, type, format, nitems);
if (!data_ret)
return;
XIChangeProperty (xdisplay, device_id, property_atom, type,
format, XIPropModeReplace, data, nitems);
meta_XFree (data_ret);
}
int
set_prop(int id, const char* prop, unsigned char* data, int nitems,
Atom type, Atom format)
{
if (!prop) {
fprintf(stderr, "[set_prop] Empty property for %d\n", id);
return -1;
}
if (!data || nitems < 1) {
fprintf(stderr, "[set_prop] Invalid data or item number for %d\n", id);
return -1;
}
Display* disp = XOpenDisplay(0);
if (!disp) {
fprintf(stderr, "[set_prop] Open display failed for %d\n", id);
return -1;
}
Atom prop_id = XInternAtom(disp, prop, True);
if (prop_id == None) {
XCloseDisplay(disp);
fprintf(stderr, "[set_prop] Intern atom %s failed\n", prop);
return -1;
}
XIChangeProperty(disp, id, prop_id, type, format,
XIPropModeReplace, data, nitems);
/* XFree(&prop_id); */
XCloseDisplay(disp);
return 0;
}
/*
* Evdev Middle Button Emulation
* 1 boolean value (8 bit, 0 or 1).
*/
int
set_middle_button_emulation(int deviceid, int enabled)
{
Display *disp = XOpenDisplay(0);
if (!disp) {
fprintf(stderr, "Args error in set_middle_button_emulation\n");
return -1;
}
char *prop_name = "Evdev Middle Button Emulation";
Atom prop = XInternAtom(
disp,
prop_name,
True);
if (prop == None) {
fprintf(stderr, "Get '%s' Atom Failed\n", prop_name);
XCloseDisplay(disp);
return -1;
}
unsigned char data = 0;
if (enabled == 1) {
data = 1;
}
XIChangeProperty(disp, deviceid, prop, XA_INTEGER, 8,
XIPropModeReplace, &data, 1);
XCloseDisplay(disp);
return 0;
}
static int
apply_matrix(Display *dpy, int deviceid, Matrix *m)
{
Atom prop_float, prop_matrix;
union {
unsigned char *c;
float *f;
} data;
int format_return;
Atom type_return;
unsigned long nitems;
unsigned long bytes_after;
int rc;
prop_float = XInternAtom(dpy, "FLOAT", False);
prop_matrix = XInternAtom(dpy, "Coordinate Transformation Matrix", False);
if (!prop_float)
{
fprintf(stderr, "Float atom not found. This server is too old.\n");
return EXIT_FAILURE;
}
if (!prop_matrix)
{
fprintf(stderr, "Coordinate transformation matrix not found. This "
"server is too old\n");
return EXIT_FAILURE;
}
rc = XIGetProperty(dpy, deviceid, prop_matrix, 0, 9, False, prop_float,
&type_return, &format_return, &nitems, &bytes_after,
&data.c);
if (rc != Success || prop_float != type_return || format_return != 32 ||
nitems != 9 || bytes_after != 0)
{
fprintf(stderr, "Failed to retrieve current property values\n");
return EXIT_FAILURE;
}
memcpy(data.f, m->m, sizeof(m->m));
XIChangeProperty(dpy, deviceid, prop_matrix, prop_float,
format_return, PropModeReplace, data.c, nitems);
XFree(data.c);
return EXIT_SUCCESS;
}
static int
set_prop_float (Display *disp, int deviceid,
const char *prop_name, double value)
{
if (!disp || !prop_name) {
fprintf(stderr, "Args error in set_prop_float\n");
return -1;
}
Atom prop = XInternAtom(
disp,
prop_name,
True);
if (prop == None) {
fprintf(stderr, "Get '%s' Atom Failed\n", prop_name);
return -1;
}
Atom act_type;
int act_format;
unsigned long nitems, bytes_after;
unsigned char *data;
int rc = XIGetProperty(disp, deviceid, prop, 0, 1, False,
AnyPropertyType, &act_type, &act_format,
&nitems, &bytes_after, &data);
if (rc != Success) {
fprintf(stderr, "Get '%ld' property failed\n", prop);
return -1;
}
Atom float_atom = XInternAtom(disp, "FLOAT", True);
if (float_atom != None && act_type == float_atom && nitems == 1) {
*(float*)data = (float)value;
XIChangeProperty(disp, deviceid, prop, act_type, act_format,
XIPropModeReplace, data, nitems);
}
XFree(data);
return 0;
}
gboolean
set_device_enabled (int device_id,
gboolean enabled)
{
Atom prop;
guchar value;
prop = XInternAtom (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()), "Device Enabled", False);
if (!prop)
return FALSE;
gdk_error_trap_push ();
value = enabled ? 1 : 0;
XIChangeProperty (GDK_DISPLAY_XDISPLAY (gdk_display_get_default ()),
device_id, prop, XA_INTEGER, 8, PropModeReplace, &value, 1);
if (gdk_error_trap_pop ())
return FALSE;
return TRUE;
}
static int
do_set_prop_xi2(Display *dpy, Atom type, int format, int argc, char **argv, char *n, char *desc)
{
XIDeviceInfo *info;
Atom prop;
Atom old_type;
char *name;
int i;
Atom float_atom;
int old_format, nelements = 0;
unsigned long act_nitems, bytes_after;
char *endptr;
union {
unsigned char *c;
int16_t *s;
int32_t *l;
} data;
if (argc < 3)
{
fprintf(stderr, "Usage: xinput %s %s\n", n, desc);
return EXIT_FAILURE;
}
info = xi2_find_device_info(dpy, argv[0]);
if (!info)
{
fprintf(stderr, "unable to find device %s\n", argv[0]);
return EXIT_FAILURE;
}
name = argv[1];
prop = parse_atom(dpy, name);
if (prop == None) {
fprintf(stderr, "invalid property %s\n", name);
return EXIT_FAILURE;
}
float_atom = XInternAtom(dpy, "FLOAT", False);
nelements = argc - 2;
if (type == None || format == 0) {
if (XIGetProperty(dpy, info->deviceid, prop, 0, 0, False,
AnyPropertyType, &old_type, &old_format, &act_nitems,
&bytes_after, &data.c) != Success) {
fprintf(stderr, "failed to get property type and format for %s\n",
name);
return EXIT_FAILURE;
} else {
if (type == None)
type = old_type;
if (format == 0)
format = old_format;
}
XFree(data.c);
}
if (type == None) {
fprintf(stderr, "property %s doesn't exist, you need to specify "
"its type and format\n", name);
return EXIT_FAILURE;
}
data.c = calloc(nelements, sizeof(int32_t));
for (i = 0; i < nelements; i++)
{
if (type == XA_INTEGER) {
switch (format)
{
case 8:
data.c[i] = atoi(argv[2 + i]);
break;
case 16:
data.s[i] = atoi(argv[2 + i]);
break;
case 32:
data.l[i] = atoi(argv[2 + i]);
break;
default:
fprintf(stderr, "unexpected size for property %s", name);
return EXIT_FAILURE;
}
} else if (type == float_atom) {
if (format != 32) {
fprintf(stderr, "unexpected format %d for property %s\n",
format, name);
return EXIT_FAILURE;
}
*(float *)(data.l + i) = strtod(argv[2 + i], &endptr);
if (endptr == argv[2 + i]) {
fprintf(stderr, "argument %s could not be parsed\n", argv[2 + i]);
return EXIT_FAILURE;
}
} else if (type == XA_ATOM) {
if (format != 32) {
fprintf(stderr, "unexpected format %d for property %s\n",
format, name);
return EXIT_FAILURE;
}
data.l[i] = parse_atom(dpy, argv[2 + i]);
} else {
fprintf(stderr, "unexpected type for property %s\n", name);
return EXIT_FAILURE;
}
}
XIChangeProperty(dpy, info->deviceid, prop, type, format, PropModeReplace,
data.c, nelements);
free(data.c);
return EXIT_SUCCESS;
}