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backends: Handle tablet settings lookups with no backing libwacom info

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Those will be unseen by g-s-d/g-c-c, so no settings will be written on
disk for those. Still, look up an ID correctly in this case instead of
crashing.

https://bugzilla.gnome.org/show_bug.cgi?id=771628
This commit is contained in:
Carlos Garnacho 2016-09-19 16:30:44 +02:00
parent 5fbb479301
commit 3137ddb1a1
1 changed files with 8 additions and 6 deletions
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14
src/backends/meta-input-settings.c
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@ -1052,7 +1052,7 @@ static gchar *
get_tablet_settings_id (ClutterInputDevice *device,
DeviceMappingInfo *info)
{
gchar *id, *machine_id;
gchar *id = NULL, *machine_id;
gsize length;
if (!g_file_get_contents ("/etc/machine-id", &machine_id, &length, NULL))
@ -1060,13 +1060,15 @@ get_tablet_settings_id (ClutterInputDevice *device,
machine_id = g_strstrip (machine_id);
#ifdef HAVE_LIBWACOM
id = g_strdup_printf ("%s-%s", machine_id, libwacom_get_match (info->wacom_device));
#else
id = g_strdup_printf ("%s-%s:%s", machine_id,
clutter_input_device_get_vendor_id (device),
clutter_input_device_get_product_id (device));
if (info->wacom_device)
id = g_strdup_printf ("%s-%s", machine_id, libwacom_get_match (info->wacom_device));
#endif
if (!id)
id = g_strdup_printf ("%s-%s:%s", machine_id,
clutter_input_device_get_vendor_id (device),
clutter_input_device_get_product_id (device));
g_free (machine_id);
return id;