xenocara/xserver/hw/xfree86/common/xf86Events.c

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/*
* Copyright 1990,91 by Thomas Roell, Dinkelscherben, Germany.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Thomas Roell not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Thomas Roell makes no representations
* about the suitability of this software for any purpose. It is provided
* "as is" without express or implied warranty.
*
* THOMAS ROELL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL THOMAS ROELL BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*
*/
/*
* Copyright (c) 1994-2003 by The XFree86 Project, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name of the copyright holder(s)
* and author(s) shall not be used in advertising or otherwise to promote
* the sale, use or other dealings in this Software without prior written
* authorization from the copyright holder(s) and author(s).
*/
/* [JCH-96/01/21] Extended std reverse map to four buttons. */
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include <X11/X.h>
#include <X11/Xproto.h>
#include <X11/Xatom.h>
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#include "misc.h"
#include "xf86.h"
#include "xf86Priv.h"
#define XF86_OS_PRIVS
#include "xf86_OSlib.h"
#include <X11/keysym.h>
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#ifdef XFreeXDGA
#include "dgaproc.h"
#endif
#include <X11/extensions/XI.h>
#include <X11/extensions/XIproto.h>
#include "inputstr.h"
#include "xf86Xinput.h"
#include "mi.h"
#include "mipointer.h"
#include "xkbsrv.h"
#include "xkbstr.h"
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#ifdef DPMSExtension
#include <X11/extensions/dpmsconst.h>
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#include "dpmsproc.h"
#endif
#include "xf86platformBus.h"
#include "systemd-logind.h"
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#ifdef XF86PM
extern void (*xf86OSPMClose) (void);
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#endif
static void xf86VTSwitch(void);
/*
* Allow arbitrary drivers or other XFree86 code to register with our main
* Wakeup handler.
*/
typedef struct x_IHRec {
int fd;
InputHandlerProc ihproc;
void *data;
Bool enabled;
Bool is_input;
struct x_IHRec *next;
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} IHRec, *IHPtr;
static IHPtr InputHandlers = NULL;
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Bool
LegalModifier(unsigned int key, DeviceIntPtr pDev)
{
return TRUE;
}
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/*
* TimeSinceLastInputEvent --
* Function used for screensaver purposes by the os module. Returns the
* time in milliseconds since there last was any input.
*/
int
TimeSinceLastInputEvent(void)
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{
if (xf86Info.lastEventTime == 0) {
xf86Info.lastEventTime = GetTimeInMillis();
}
return GetTimeInMillis() - xf86Info.lastEventTime;
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}
/*
* SetTimeSinceLastInputEvent --
* Set the lastEventTime to now.
*/
void
SetTimeSinceLastInputEvent(void)
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{
xf86Info.lastEventTime = GetTimeInMillis();
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}
/*
* ProcessInputEvents --
* Retrieve all waiting input events and pass them to DIX in their
* correct chronological order. Only reads from the system pointer
* and keyboard.
*/
void
ProcessInputEvents(void)
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{
int x, y;
mieqProcessInputEvents();
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/* FIXME: This is a problem if we have multiple pointers */
miPointerGetPosition(inputInfo.pointer, &x, &y);
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xf86SetViewport(xf86Info.currentScreen, x, y);
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}
/*
* Handle keyboard events that cause some kind of "action"
* (i.e., server termination, video mode changes, VT switches, etc.)
*/
void
xf86ProcessActionEvent(ActionEvent action, void *arg)
{
DebugF("ProcessActionEvent(%d,%p)\n", (int) action, arg);
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switch (action) {
case ACTION_TERMINATE:
if (!xf86Info.dontZap) {
xf86Msg(X_INFO, "Server zapped. Shutting down.\n");
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#ifdef XFreeXDGA
DGAShutdown();
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#endif
GiveUp(0);
}
break;
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case ACTION_NEXT_MODE:
if (!xf86Info.dontZoom)
xf86ZoomViewport(xf86Info.currentScreen, 1);
break;
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case ACTION_PREV_MODE:
if (!xf86Info.dontZoom)
xf86ZoomViewport(xf86Info.currentScreen, -1);
break;
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case ACTION_SWITCHSCREEN:
if (!xf86Info.dontVTSwitch && arg) {
int vtno = *((int *) arg);
if (vtno != xf86Info.vtno) {
if (!xf86VTActivate(vtno)) {
ErrorF("Failed to switch from vt%02d to vt%02d: %s\n",
xf86Info.vtno, vtno, strerror(errno));
}
}
}
break;
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case ACTION_SWITCHSCREEN_NEXT:
if (!xf86Info.dontVTSwitch) {
if (!xf86VTActivate(xf86Info.vtno + 1)) {
/* If first try failed, assume this is the last VT and
* try wrapping around to the first vt.
*/
if (!xf86VTActivate(1)) {
ErrorF("Failed to switch from vt%02d to next vt: %s\n",
xf86Info.vtno, strerror(errno));
}
}
}
break;
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case ACTION_SWITCHSCREEN_PREV:
if (!xf86Info.dontVTSwitch && xf86Info.vtno > 0) {
if (!xf86VTActivate(xf86Info.vtno - 1)) {
/* Don't know what the maximum VT is, so can't wrap around */
ErrorF("Failed to switch from vt%02d to previous vt: %s\n",
xf86Info.vtno, strerror(errno));
}
}
break;
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default:
break;
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}
}
/*
* xf86Wakeup --
* Os wakeup handler.
*/
/* ARGSUSED */
void
xf86Wakeup(void *blockData, int err)
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{
if (xf86VTSwitchPending())
xf86VTSwitch();
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}
/*
* xf86ReadInput --
* input thread handler
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*/
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static void
xf86ReadInput(int fd, int ready, void *closure)
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{
InputInfoPtr pInfo = closure;
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pInfo->read_input(pInfo);
}
/*
* xf86AddEnabledDevice --
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*
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*/
void
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xf86AddEnabledDevice(InputInfoPtr pInfo)
{
InputThreadRegisterDev(pInfo->fd, xf86ReadInput, pInfo);
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}
/*
* xf86RemoveEnabledDevice --
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*
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*/
void
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xf86RemoveEnabledDevice(InputInfoPtr pInfo)
{
InputThreadUnregisterDev(pInfo->fd);
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}
/*
* xf86PrintBacktrace --
* Print a stack backtrace for debugging purposes.
*/
void
xf86PrintBacktrace(void)
{
xorg_backtrace();
}
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static void
xf86ReleaseKeys(DeviceIntPtr pDev)
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{
KeyClassPtr keyc;
int i;
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if (!pDev || !pDev->key)
return;
keyc = pDev->key;
/*
* Hmm... here is the biggest hack of every time !
* It may be possible that a switch-vt procedure has finished BEFORE
* you released all keys neccessary to do this. That peculiar behavior
* can fool the X-server pretty much, cause it assumes that some keys
* were not released. TWM may stuck alsmost completly....
* OK, what we are doing here is after returning from the vt-switch
* exeplicitely unrelease all keyboard keys before the input-devices
* are reenabled.
*/
for (i = keyc->xkbInfo->desc->min_key_code;
i < keyc->xkbInfo->desc->max_key_code; i++) {
if (key_is_down(pDev, i, KEY_POSTED)) {
input_lock();
QueueKeyboardEvents(pDev, KeyRelease, i);
input_unlock();
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}
}
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}
void
xf86DisableInputDeviceForVTSwitch(InputInfoPtr pInfo)
{
if (!pInfo->dev)
return;
if (!pInfo->dev->enabled)
pInfo->flags |= XI86_DEVICE_DISABLED;
xf86ReleaseKeys(pInfo->dev);
ProcessInputEvents();
DisableDevice(pInfo->dev, TRUE);
}
void
xf86EnableInputDeviceForVTSwitch(InputInfoPtr pInfo)
{
if (pInfo->dev && (pInfo->flags & XI86_DEVICE_DISABLED) == 0)
EnableDevice(pInfo->dev, TRUE);
pInfo->flags &= ~XI86_DEVICE_DISABLED;
}
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/*
* xf86UpdateHasVTProperty --
* Update a flag property on the root window to say whether the server VT
* is currently the active one as some clients need to know this.
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*/
static void
xf86UpdateHasVTProperty(Bool hasVT)
{
Atom property_name;
int32_t value = hasVT ? 1 : 0;
int i;
property_name = MakeAtom(HAS_VT_ATOM_NAME, sizeof(HAS_VT_ATOM_NAME) - 1,
FALSE);
if (property_name == BAD_RESOURCE)
FatalError("Failed to retrieve \"HAS_VT\" atom\n");
for (i = 0; i < xf86NumScreens; i++) {
dixChangeWindowProperty(serverClient,
xf86ScrnToScreen(xf86Screens[i])->root,
property_name, XA_INTEGER, 32,
PropModeReplace, 1, &value, TRUE);
}
}
void
xf86VTLeave(void)
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{
int i;
InputInfoPtr pInfo;
IHPtr ih;
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DebugF("xf86VTSwitch: Leaving, xf86Exiting is %s\n",
BOOLTOSTRING((dispatchException & DE_TERMINATE) ? TRUE : FALSE));
#ifdef DPMSExtension
if (DPMSPowerLevel != DPMSModeOn)
DPMSSet(serverClient, DPMSModeOn);
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#endif
for (i = 0; i < xf86NumScreens; i++) {
if (!(dispatchException & DE_TERMINATE))
if (xf86Screens[i]->EnableDisableFBAccess)
(*xf86Screens[i]->EnableDisableFBAccess) (xf86Screens[i], FALSE);
}
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/*
* Keep the order: Disable Device > LeaveVT
* EnterVT > EnableDevice
*/
for (ih = InputHandlers; ih; ih = ih->next) {
if (ih->is_input)
xf86DisableInputHandler(ih);
else
xf86DisableGeneralHandler(ih);
}
for (pInfo = xf86InputDevs; pInfo; pInfo = pInfo->next)
xf86DisableInputDeviceForVTSwitch(pInfo);
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input_lock();
for (i = 0; i < xf86NumScreens; i++)
xf86Screens[i]->LeaveVT(xf86Screens[i]);
for (i = 0; i < xf86NumGPUScreens; i++)
xf86GPUScreens[i]->LeaveVT(xf86GPUScreens[i]);
if (!xf86VTSwitchAway())
goto switch_failed;
#ifdef XF86PM
if (xf86OSPMClose)
xf86OSPMClose();
xf86OSPMClose = NULL;
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#endif
for (i = 0; i < xf86NumScreens; i++) {
/*
* zero all access functions to
* trap calls when switched away.
*/
xf86Screens[i]->vtSema = FALSE;
}
if (xorgHWAccess)
xf86DisableIO();
xf86UpdateHasVTProperty(FALSE);
return;
switch_failed:
DebugF("xf86VTSwitch: Leave failed\n");
for (i = 0; i < xf86NumScreens; i++) {
if (!xf86Screens[i]->EnterVT(xf86Screens[i]))
FatalError("EnterVT failed for screen %d\n", i);
}
for (i = 0; i < xf86NumGPUScreens; i++) {
if (!xf86GPUScreens[i]->EnterVT(xf86GPUScreens[i]))
FatalError("EnterVT failed for gpu screen %d\n", i);
}
if (!(dispatchException & DE_TERMINATE)) {
for (i = 0; i < xf86NumScreens; i++) {
if (xf86Screens[i]->EnableDisableFBAccess)
(*xf86Screens[i]->EnableDisableFBAccess) (xf86Screens[i], TRUE);
}
}
dixSaveScreens(serverClient, SCREEN_SAVER_FORCER, ScreenSaverReset);
for (pInfo = xf86InputDevs; pInfo; pInfo = pInfo->next)
xf86EnableInputDeviceForVTSwitch(pInfo);
for (ih = InputHandlers; ih; ih = ih->next) {
if (ih->is_input)
xf86EnableInputHandler(ih);
else
xf86EnableGeneralHandler(ih);
}
input_unlock();
}
void
xf86VTEnter(void)
{
int i;
InputInfoPtr pInfo;
IHPtr ih;
DebugF("xf86VTSwitch: Entering\n");
if (!xf86VTSwitchTo())
return;
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#ifdef XF86PM
xf86OSPMClose = xf86OSPMOpen();
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#endif
if (xorgHWAccess)
xf86EnableIO();
for (i = 0; i < xf86NumScreens; i++) {
xf86Screens[i]->vtSema = TRUE;
if (!xf86Screens[i]->EnterVT(xf86Screens[i]))
FatalError("EnterVT failed for screen %d\n", i);
}
for (i = 0; i < xf86NumGPUScreens; i++) {
xf86GPUScreens[i]->vtSema = TRUE;
if (!xf86GPUScreens[i]->EnterVT(xf86GPUScreens[i]))
FatalError("EnterVT failed for gpu screen %d\n", i);
}
for (i = 0; i < xf86NumScreens; i++) {
if (xf86Screens[i]->EnableDisableFBAccess)
(*xf86Screens[i]->EnableDisableFBAccess) (xf86Screens[i], TRUE);
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}
/* Turn screen saver off when switching back */
dixSaveScreens(serverClient, SCREEN_SAVER_FORCER, ScreenSaverReset);
for (pInfo = xf86InputDevs; pInfo; pInfo = pInfo->next) {
/* Devices with server managed fds get enabled on logind resume */
if (!(pInfo->flags & XI86_SERVER_FD))
xf86EnableInputDeviceForVTSwitch(pInfo);
}
for (ih = InputHandlers; ih; ih = ih->next) {
if (ih->is_input)
xf86EnableInputHandler(ih);
else
xf86EnableGeneralHandler(ih);
}
#ifdef XSERVER_PLATFORM_BUS
/* check for any new output devices */
xf86platformVTProbe();
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#endif
xf86UpdateHasVTProperty(TRUE);
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input_unlock();
}
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/*
* xf86VTSwitch --
* Handle requests for switching the vt.
*/
static void
xf86VTSwitch(void)
{
DebugF("xf86VTSwitch()\n");
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#ifdef XFreeXDGA
if (!DGAVTSwitch())
return;
#endif
/*
* Since all screens are currently all in the same state it is sufficient
* check the first. This might change in future.
*
* VTLeave is always handled here (VT_PROCESS guarantees this is safe),
* if we use systemd_logind xf86VTEnter() gets called by systemd-logind.c
* once it has resumed all drm nodes.
*/
if (xf86VTOwner())
xf86VTLeave();
else if (!systemd_logind_controls_session())
xf86VTEnter();
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}
/* Input handler registration */
static void
xf86InputHandlerNotify(int fd, int ready, void *data)
{
IHPtr ih = data;
if (ih->enabled && ih->fd >= 0 && ih->ihproc) {
ih->ihproc(ih->fd, ih->data);
}
}
static void *
addInputHandler(int fd, InputHandlerProc proc, void *data)
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{
IHPtr ih;
if (fd < 0 || !proc)
return NULL;
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ih = calloc(sizeof(*ih), 1);
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if (!ih)
return NULL;
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ih->fd = fd;
ih->ihproc = proc;
ih->data = data;
ih->enabled = TRUE;
if (!SetNotifyFd(fd, xf86InputHandlerNotify, X_NOTIFY_READ, ih)) {
free(ih);
return NULL;
}
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ih->next = InputHandlers;
InputHandlers = ih;
return ih;
}
void *
xf86AddInputHandler(int fd, InputHandlerProc proc, void *data)
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{
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IHPtr ih = addInputHandler(fd, proc, data);
if (ih)
ih->is_input = TRUE;
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return ih;
}
void *
xf86AddGeneralHandler(int fd, InputHandlerProc proc, void *data)
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{
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IHPtr ih = addInputHandler(fd, proc, data);
return ih;
}
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/**
* Set the handler for the console's fd. Replaces (and returns) the previous
* handler or NULL, whichever appropriate.
* proc may be NULL if the server should not handle events on the console.
*/
InputHandlerProc
xf86SetConsoleHandler(InputHandlerProc proc, void *data)
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{
static IHPtr handler = NULL;
InputHandlerProc old_proc = NULL;
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if (handler) {
old_proc = handler->ihproc;
xf86RemoveGeneralHandler(handler);
}
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handler = xf86AddGeneralHandler(xf86Info.consoleFd, proc, data);
return old_proc;
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}
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static void
removeInputHandler(IHPtr ih)
{
IHPtr p;
if (ih->fd >= 0)
RemoveNotifyFd(ih->fd);
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if (ih == InputHandlers)
InputHandlers = ih->next;
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else {
p = InputHandlers;
while (p && p->next != ih)
p = p->next;
if (ih)
p->next = ih->next;
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}
free(ih);
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}
int
xf86RemoveInputHandler(void *handler)
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{
IHPtr ih;
int fd;
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if (!handler)
return -1;
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ih = handler;
fd = ih->fd;
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removeInputHandler(ih);
return fd;
}
int
xf86RemoveGeneralHandler(void *handler)
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{
IHPtr ih;
int fd;
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if (!handler)
return -1;
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ih = handler;
fd = ih->fd;
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removeInputHandler(ih);
return fd;
}
void
xf86DisableInputHandler(void *handler)
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{
IHPtr ih;
if (!handler)
return;
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ih = handler;
ih->enabled = FALSE;
if (ih->fd >= 0)
RemoveNotifyFd(ih->fd);
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}
void
xf86DisableGeneralHandler(void *handler)
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{
IHPtr ih;
if (!handler)
return;
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ih = handler;
ih->enabled = FALSE;
if (ih->fd >= 0)
RemoveNotifyFd(ih->fd);
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}
void
xf86EnableInputHandler(void *handler)
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{
IHPtr ih;
if (!handler)
return;
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ih = handler;
ih->enabled = TRUE;
if (ih->fd >= 0)
SetNotifyFd(ih->fd, xf86InputHandlerNotify, X_NOTIFY_READ, ih);
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}
void
xf86EnableGeneralHandler(void *handler)
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{
IHPtr ih;
if (!handler)
return;
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ih = handler;
ih->enabled = TRUE;
if (ih->fd >= 0)
SetNotifyFd(ih->fd, xf86InputHandlerNotify, X_NOTIFY_READ, ih);
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}
void
DDXRingBell(int volume, int pitch, int duration)
{
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xf86OSRingBell(volume, pitch, duration);
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}
Bool
xf86VTOwner(void)
{
/* at system startup xf86Screens[0] won't be set - but we will own the VT */
if (xf86NumScreens == 0)
return TRUE;
return xf86Screens[0]->vtSema;
}