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x11: Fetch vendor/product identifiers for input devices

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These are retrieved from XInput device properties.

https://bugzilla.gnome.org/show_bug.cgi?id=740758
This commit is contained in:
Carlos Garnacho
2014-11-18 14:25:51 +01:00
parent 5e53676b46
commit 121fddc4d2
1 changed files with 43 additions and 0 deletions
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43
gdk/x11/gdkdevicemanager-xi2.c
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@ -32,6 +32,7 @@
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/extensions/XInput2.h>
#include <X11/Xatom.h>
#include <string.h>
@ -300,6 +301,39 @@ is_touch_device (XIAnyClassInfo **classes,
return FALSE;
}
static gboolean
get_device_ids (GdkDisplay *display,
XIDeviceInfo *info,
gchar **vendor_id,
gchar **product_id)
{
gulong nitems, bytes_after;
guint32 *data;
int rc, format;
Atom type;
gdk_x11_display_error_trap_push (display);
rc = XIGetProperty (GDK_DISPLAY_XDISPLAY (display),
info->deviceid,
gdk_x11_get_xatom_by_name_for_display (display, "Device Product ID"),
0, 2, False, XA_INTEGER, &type, &format, &nitems, &bytes_after,
(guchar **) &data);
gdk_x11_display_error_trap_pop_ignored (display);
if (rc != Success || type != XA_INTEGER || format != 32 || nitems != 2)
return FALSE;
if (vendor_id)
*vendor_id = g_strdup_printf ("%.4x", data[0]);
if (product_id)
*product_id = g_strdup_printf ("%.4x", data[1]);
XFree (data);
return TRUE;
}
static GdkDevice *
create_device (GdkDeviceManager *device_manager,
GdkDisplay *display,
@ -311,6 +345,7 @@ create_device (GdkDeviceManager *device_manager,
GdkDevice *device;
GdkInputMode mode;
gint num_touches = 0;
gchar *vendor_id = NULL, *product_id = NULL;
if (dev->use == XIMasterKeyboard || dev->use == XISlaveKeyboard)
input_source = GDK_SOURCE_KEYBOARD;
@ -369,6 +404,10 @@ create_device (GdkDeviceManager *device_manager,
num_touches);
}));
if (dev->use != XIMasterKeyboard &&
dev->use != XIMasterPointer)
get_device_ids (display, dev, &vendor_id, &product_id);
device = g_object_new (GDK_TYPE_X11_DEVICE_XI2,
"name", dev->name,
"type", type,
@ -378,9 +417,13 @@ create_device (GdkDeviceManager *device_manager,
"display", display,
"device-manager", device_manager,
"device-id", dev->deviceid,
"vendor-id", vendor_id,
"product-id", product_id,
NULL);
translate_device_classes (display, device, dev->classes, dev->num_classes);
g_free (vendor_id);
g_free (product_id);
return device;
}