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xinput_helper.cpp
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xinput_helper.cpp
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/*
* Copyright (C) 2010 Andriy Rysin (rysin@kde.org)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "xinput_helper.h"
#include "debug.h"
#include <config-keyboard.h>
#include <QCoreApplication>
#include <QX11Info>
#include <QDebug>
#include <X11/X.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#ifdef HAVE_XINPUT
#include <X11/extensions/XInput.h>
#include <xcb/xproto.h>
typedef struct xcb_input_device_presence_notify_event_t {
uint8_t response_type;
uint8_t pad0;
uint16_t sequence;
xcb_timestamp_t time;
uint8_t devchange;
uint8_t device_id;
uint16_t control;
uint8_t pad1[20];
} xcb_input_device_presence_notify_event_t;
// FIXME: #include <xcb/xinput.h> once xcb-xinput is stable
#endif
#include "x11_helper.h"
#include "udev_helper.h"
#include <fixx11h.h>
static const int DEVICE_NONE = 0;
static const int DEVICE_KEYBOARD = 1;
static const int DEVICE_POINTER = 2;
XInputEventNotifier::XInputEventNotifier(QWidget* parent):
XEventNotifier(), //TODO: destruct properly?
xinputEventType(-1),
udevNotifier(Q_NULLPTR)
{
Q_UNUSED(parent)
}
void XInputEventNotifier::start()
{
if( QCoreApplication::instance() != NULL ) {
registerForNewDeviceEvent(QX11Info::display());
}
XEventNotifier::start();
}
void XInputEventNotifier::stop()
{
XEventNotifier::stop();
if( QCoreApplication::instance() != NULL ) {
// XEventNotifier::unregisterForNewDeviceEvent(QX11Info::display());
}
}
bool XInputEventNotifier::processOtherEvents(xcb_generic_event_t* event)
{
int newDeviceType = getNewDeviceEventType(event);
if( newDeviceType == DEVICE_KEYBOARD ) {
emit(newKeyboardDevice());
}
else if( newDeviceType == DEVICE_POINTER ) {
emit(newPointerDevice());
emit(newKeyboardDevice()); // arghhh, looks like X resets xkb map even when only pointer device is connected
}
return true;
}
#if defined(HAVE_XINPUT)
// This is ugly but allows to skip multiple execution of setxkbmap
// for all keyboard devices that don't care about layouts
static bool isRealKeyboard(const char* deviceName)
{
return strstr(deviceName, "Video Bus") == NULL
&& strstr(deviceName, "Sleep Button") == NULL
&& strstr(deviceName, "Power Button") == NULL
&& strstr(deviceName, "WMI hotkeys") == NULL;
}
int XInputEventNotifier::getNewDeviceEventType(xcb_generic_event_t* event)
{
int newDeviceType = DEVICE_NONE;
if( xinputEventType != -1 && event->response_type == xinputEventType ) {
xcb_input_device_presence_notify_event_t *xdpne = reinterpret_cast<xcb_input_device_presence_notify_event_t *>(event);
if( xdpne->devchange == DeviceEnabled ) {
int ndevices;
XDeviceInfo *devices = XListInputDevices(display, &ndevices);
if( devices != NULL ) {
qCDebug(KCM_KEYBOARD) << "New device id:" << xdpne->device_id;
for(int i=0; i<ndevices; i++) {
qCDebug(KCM_KEYBOARD) << "id:" << devices[i].id << "name:" << devices[i].name << "used as:" << devices[i].use;
if( devices[i].id == xdpne->device_id ) {
if( devices[i].use == IsXKeyboard || devices[i].use == IsXExtensionKeyboard ) {
if( isRealKeyboard(devices[i].name) ) {
newDeviceType = DEVICE_KEYBOARD;
qCDebug(KCM_KEYBOARD) << "new keyboard device, id:" << devices[i].id << "name:" << devices[i].name << "used as:" << devices[i].use;
break;
}
}
if( devices[i].use == IsXPointer || devices[i].use == IsXExtensionPointer ) {
newDeviceType = DEVICE_POINTER;
qCDebug(KCM_KEYBOARD) << "new pointer device, id:" << devices[i].id << "name:" << devices[i].name << "used as:" << devices[i].use;
break;
}
}
}
XFreeDeviceList(devices);
}
}
}
return newDeviceType;
}
int XInputEventNotifier::registerForNewDeviceEvent(Display* display_)
{
int xitype;
XEventClass xiclass;
display = display_;
DevicePresence(display, xitype, xiclass);
XSelectExtensionEvent(display, DefaultRootWindow(display), &xiclass, 1);
qCDebug(KCM_KEYBOARD) << "Registered for new device events from XInput, class" << xitype;
xinputEventType = xitype;
return xitype;
}
#elif defined(HAVE_UDEV)
int XInputEventNotifier::registerForNewDeviceEvent(Display* /*display*/)
{
if (!udevNotifier) {
udevNotifier = new UdevDeviceNotifier(this);
connect(udevNotifier, &UdevDeviceNotifier::newKeyboardDevice, this, &XInputEventNotifier::newKeyboardDevice);
connect(udevNotifier, &UdevDeviceNotifier::newPointerDevice, this, &XInputEventNotifier::newPointerDevice);
// Same as with XInput notifier, also emit newKeyboardDevice when pointer device is found
connect(udevNotifier, &UdevDeviceNotifier::newPointerDevice, this, &XInputEventNotifier::newKeyboardDevice);
}
return -1;
}
int XInputEventNotifier::getNewDeviceEventType(xcb_generic_event_t* /*event*/)
{
return DEVICE_NONE;
}
#else
#ifdef __GNUC__
#warning "Keyboard daemon is compiled without XInput and UDev, keyboard settings will be reset when new keyboard device is plugged in!"
#endif
int XInputEventNotifier::registerForNewDeviceEvent(Display* /*display*/)
{
qCWarning(KCM_KEYBOARD) << "Keyboard kded daemon is compiled without XInput, xkb configuration will be reset when new keyboard device is plugged in!";
return -1;
}
int XInputEventNotifier::getNewDeviceEventType(xcb_generic_event_t* /*event*/)
{
return DEVICE_NONE;
}
#endif