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Disable two-finger scrolling/tapping based on touchpad capabilities.

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Touchpads that can't do two-finger cannot two-finger scroll - disable this
scroll method.

Touchpads that don't have physical buttons mustn't disable tapping - set to
on by default and disable checkbox.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Peter Hutterer 2009-11-10 15:49:50 +10:00 • committed by Jens Granseuer
parent d081be4045
commit a5bf115175
1 changed files with 51 additions and 0 deletions
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51
capplets/mouse/gnome-mouse-properties.c
View file

@ -327,6 +327,56 @@ scrollmethod_changed_event (GConfPropertyEditor *peditor,
!gtk_toggle_button_get_active (disabled));
}
static void
synaptics_check_capabilities (GtkBuilder *dialog)
{
#ifdef HAVE_XINPUT
int numdevices, i;
XDeviceInfo *devicelist;
Atom realtype, prop;
int realformat;
unsigned long nitems, bytes_after;
unsigned char *data;
prop = XInternAtom (GDK_DISPLAY (), "Synaptics Capabilities", True);
if (!prop)
return;
devicelist = XListInputDevices (GDK_DISPLAY (), &numdevices);
for (i = 0; i < numdevices; i++) {
if (devicelist[i].use != IsXExtensionPointer)
continue;
gdk_error_trap_push ();
XDevice *device = XOpenDevice (GDK_DISPLAY (),
devicelist[i].id);
if (gdk_error_trap_pop ())
continue;
gdk_error_trap_push ();
if ((XGetDeviceProperty (GDK_DISPLAY (), device, prop, 0, 2, False,
XA_INTEGER, &realtype, &realformat, &nitems,
&bytes_after, &data) == Success) && (realtype != None)) {
/* Property data is booleans for has_left, has_middle,
* has_right, has_double, has_triple */
if (!data[0] || !data[1] || !data[2]) {
gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (WID ("tap_to_click_toggle")), TRUE);
gtk_widget_set_sensitive (WID ("tap_to_click_toggle"), FALSE);
}
if (!data[3])
gtk_widget_set_sensitive (WID ("scroll_twofinger_radio"), FALSE);
XFree (data);
}
gdk_error_trap_pop ();
XCloseDevice (GDK_DISPLAY (), device);
}
XFreeDeviceList (devicelist);
#endif
}
static gboolean
find_synaptics (void)
{
@ -451,6 +501,7 @@ setup_dialog (GtkBuilder *dialog, GConfChangeSet *changeset)
(changeset, "/desktop/gnome/peripherals/touchpad/scroll_method", gtk_radio_button_get_group (radio),
NULL);
synaptics_check_capabilities (dialog);
scrollmethod_changed_event (GCONF_PROPERTY_EDITOR (peditor), NULL, NULL, dialog);
g_signal_connect (peditor, "value-changed",
G_CALLBACK (scrollmethod_changed_event), dialog);