Learning_GTK4_tree/gdk/x11/gdkdevicemanager-x11.c

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/* GDK - The GIMP Drawing Kit
* Copyright (C) 2009 Carlos Garnacho <carlosg@gnome.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "gdkx11devicemanager-xi2.h"
#include "gdkprivate-x11.h"
#include "gdkdisplay-x11.h"
/* Defines for VCP/VCK, to be used too
* for the core protocol device manager
*/
#define VIRTUAL_CORE_POINTER_ID 2
#define VIRTUAL_CORE_KEYBOARD_ID 3
GdkX11DeviceManagerXI2 *
_gdk_x11_device_manager_new (GdkDisplay *display)
{
int opcode, firstevent, firsterror;
Display *xdisplay;
xdisplay = GDK_DISPLAY_XDISPLAY (display);
if (XQueryExtension (xdisplay, "XInputExtension",
&opcode, &firstevent, &firsterror))
{
int major, minor;
major = 2;
minor = 4;
if (XIQueryVersion (xdisplay, &major, &minor) != BadRequest)
{
GdkX11DeviceManagerXI2 *device_manager_xi2;
GDK_DISPLAY_DEBUG (display, INPUT, "Creating XI2 (version %d.%d) device manager",
major, minor);
device_manager_xi2 = g_object_new (GDK_TYPE_X11_DEVICE_MANAGER_XI2,
"display", display,
"opcode", opcode,
"major", major,
"minor", minor,
NULL);
return device_manager_xi2;
}
}
g_error ("XInput2 support not found on display");
}
/**
* gdk_x11_device_manager_lookup:
* @device_manager: (type GdkX11DeviceManagerXI2): a `GdkDeviceManager`
* @device_id: a device ID, as understood by the XInput2 protocol
*
* Returns the `GdkDevice` that wraps the given device ID.
*
* Returns: (transfer none) (nullable) (type GdkX11DeviceXI2): The
* `GdkDevice` wrapping the device ID, or %NULL if the given ID
* doesnt currently represent a device.
*/
GdkDevice *
gdk_x11_device_manager_lookup (GdkX11DeviceManagerXI2 *device_manager,
int device_id)
{
g_return_val_if_fail (GDK_IS_X11_DEVICE_MANAGER_XI2 (device_manager), NULL);
return _gdk_x11_device_manager_xi2_lookup (GDK_X11_DEVICE_MANAGER_XI2 (device_manager),
device_id);
}
/**
* gdk_x11_device_get_id:
* @device: (type GdkX11DeviceXI2): a `GdkDevice`
*
* Returns the device ID as seen by XInput2.
*
* Returns: the XInput2 device ID
*/
int
gdk_x11_device_get_id (GdkDevice *device)
{
g_return_val_if_fail (GDK_IS_DEVICE (device), 0);
return _gdk_x11_device_xi2_get_id (GDK_X11_DEVICE_XI2 (device));
}