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x11: Improve touchpad detection heuristics

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We should use the same heuristics used by GDK in order to detect whether
a device is a touchpad or not.

Based on the similar code from Carlos Garnacho for GDK:
https://git.gnome.org/browse/gtk+/commit/?id=6f07d5e7

https://bugzilla.gnome.org/show_bug.cgi?id=747436
This commit is contained in:
Emmanuele Bassi 2015-04-09 11:03:16 +01:00
parent bb52fa81ce
commit 83cd36e95f
1 changed files with 33 additions and 1 deletions
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32
clutter/x11/clutter-device-manager-xi2.c
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@ -222,6 +222,32 @@ is_touch_device (XIAnyClassInfo **classes,
return FALSE;
}
static gboolean
is_touchpad_device (ClutterBackendX11 *backend_x11,
XIDeviceInfo *info)
{
gulong nitems, bytes_after;
guint32 *data = NULL;
int rc, format;
Atom type;
clutter_x11_trap_x_errors ();
rc = XIGetProperty (backend_x11->xdpy,
info->deviceid,
XInternAtom (backend_x11->xdpy, "libinput Tapping Enabled", False),
0, 1, False, XA_INTEGER, &type, &format, &nitems, &bytes_after,
(guchar **) &data);
clutter_x11_untrap_x_errors ();
/* We don't care about the data */
XFree (data);
if (rc != Success || type != XA_INTEGER || format != 32 || nitems != 1)
return FALSE;
return TRUE;
}
static gboolean
get_device_ids (ClutterBackendX11 *backend_x11,
XIDeviceInfo *info,
@ -267,7 +293,13 @@ create_device (ClutterDeviceManagerXI2 *manager_xi2,
gchar *vendor_id = NULL, *product_id = NULL;
if (info->use == XIMasterKeyboard || info->use == XISlaveKeyboard)
{
source = CLUTTER_KEYBOARD_DEVICE;
}
else if (is_touchpad_device (backend_x11, info))
{
source = CLUTTER_TOUCHPAD_DEVICE;
}
else if (info->use == XISlavePointer &&
is_touch_device (info->classes, info->num_classes,
&touch_source,