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xserver/hw/xfree86/common/xf86Xinput.c

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/*
* Copyright 1995-1999 by Frederic Lepied, France. <Lepied@XFree86.org>
*
* 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 Frederic Lepied not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Frederic Lepied makes no
* representations about the suitability of this software for any purpose. It
* is provided "as is" without express or implied warranty.
*
* FREDERIC LEPIED DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL FREDERIC LEPIED 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) 2000-2002 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,
* 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).
*/
/* $XConsortium: xf86Xinput.c /main/14 1996/10/27 11:05:25 kaleb $ */
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include <X11/Xfuncproto.h>
#include <X11/Xmd.h>
#ifdef XINPUT
#include <X11/extensions/XI.h>
#include <X11/extensions/XIproto.h>
#endif
#include "xf86.h"
#include "xf86Priv.h"
#include "xf86Xinput.h"
#ifdef XINPUT
#include "XIstubs.h"
#include "xf86Optrec.h"
#endif
#include "mipointer.h"
#include "xf86InPriv.h"
#ifdef DPMSExtension
#define DPMS_SERVER
#include <X11/extensions/dpms.h>
#include "dpmsproc.h"
#endif
#include "exevents.h" /* AddInputDevice */
#include "exglobals.h"
#define EXTENSION_PROC_ARGS void *
#include "extnsionst.h"
#include "extinit.h" /* LookupDeviceIntRec */
#include "windowstr.h" /* screenIsSaved */
#include <stdarg.h>
#include "osdep.h" /* EnabledDevices */
#include <X11/Xpoll.h>
#include "xf86_OSproc.h" /* sigio stuff */
#include "mi.h"
#ifdef XFreeXDGA
#include "dgaproc.h"
#endif
xEvent *xf86Events = NULL;
static Bool
xf86SendDragEvents(DeviceIntPtr device)
{
LocalDevicePtr local = (LocalDevicePtr) device->public.devicePrivate;
if (device->button && device->button->buttonsDown > 0)
return (local->flags & XI86_SEND_DRAG_EVENTS);
else
return (TRUE);
}
/***********************************************************************
*
* xf86ProcessCommonOptions --
*
* Process global options.
*
***********************************************************************
*/
_X_EXPORT void
xf86ProcessCommonOptions(LocalDevicePtr local,
pointer list)
{
if (xf86SetBoolOption(list, "AlwaysCore", 0) ||
!xf86SetBoolOption(list, "SendCoreEvents", 1) ||
!xf86SetBoolOption(list, "CorePointer", 1) ||
!xf86SetBoolOption(list, "CoreKeyboard", 1)) {
xf86Msg(X_CONFIG, "%s: doesn't report core events\n", local->name);
} else {
local->flags |= XI86_ALWAYS_CORE;
xf86Msg(X_CONFIG, "%s: always reports core events\n", local->name);
}
if (xf86SetBoolOption(list, "SendDragEvents", 1)) {
local->flags |= XI86_SEND_DRAG_EVENTS;
} else {
xf86Msg(X_CONFIG, "%s: doesn't report drag events\n", local->name);
}
/* Backwards compatibility. */
local->history_size = GetMotionHistorySize();
}
/***********************************************************************
*
* xf86ActivateDevice --
*
* Initialize an input device.
*
***********************************************************************
*/
_X_EXPORT void
xf86ActivateDevice(LocalDevicePtr local)
{
DeviceIntPtr dev;
if (local->flags & XI86_CONFIGURED) {
dev = AddInputDevice(local->device_control, TRUE);
if (dev == NULL)
FatalError("Too many input devices");
local->atom = MakeAtom(local->type_name,
strlen(local->type_name),
TRUE);
AssignTypeAndName(dev, local->atom, local->name);
dev->public.devicePrivate = (pointer) local;
local->dev = dev;
dev->coreEvents = local->flags & XI86_ALWAYS_CORE;
RegisterOtherDevice(dev);
if (serverGeneration == 1)
xf86Msg(X_INFO, "XINPUT: Adding extended input device \"%s\" (type: %s)\n",
local->name, local->type_name);
}
}
#ifdef XINPUT
/***********************************************************************
*
* Caller: ProcXOpenDevice
*
* This is the implementation-dependent routine to open an input device.
* Some implementations open all input devices when the server is first
* initialized, and never close them. Other implementations open only
* the X pointer and keyboard devices during server initialization,
* and only open other input devices when some client makes an
* XOpenDevice request. This entry point is for the latter type of
* implementation.
*
* If the physical device is not already open, do it here. In this case,
* you need to keep track of the fact that one or more clients has the
* device open, and physically close it when the last client that has
* it open does an XCloseDevice.
*
* The default implementation is to do nothing (assume all input devices
* are opened during X server initialization and kept open).
*
***********************************************************************
*/
void
OpenInputDevice(DeviceIntPtr dev,
ClientPtr client,
int *status)
{
if (!dev->inited)
ActivateDevice(dev);
if (!dev->public.on) {
if (EnableDevice(dev)) {
dev->startup = FALSE;
}
else {
ErrorF("couldn't enable device %s\n", dev->name);
*status = BadDevice;
return;
}
}
*status = Success;
}
void
CloseInputDevice(DeviceIntPtr dev,
ClientPtr client)
{
}
/****************************************************************************
*
* Caller: ProcXSetDeviceMode
*
* Change the mode of an extension device.
* This function is used to change the mode of a device from reporting
* relative motion to reporting absolute positional information, and
* vice versa.
* The default implementation below is that no such devices are supported.
*
***********************************************************************
*/
int
SetDeviceMode (ClientPtr client, DeviceIntPtr dev, int mode)
{
LocalDevicePtr local = (LocalDevicePtr)dev->public.devicePrivate;
if (local->switch_mode) {
return (*local->switch_mode)(client, dev, mode);
}
else
return BadMatch;
}
/***********************************************************************
*
* Caller: ProcXSetDeviceValuators
*
* Set the value of valuators on an extension input device.
* This function is used to set the initial value of valuators on
* those input devices that are capable of reporting either relative
* motion or an absolute position, and allow an initial position to be set.
* The default implementation below is that no such devices are supported.
*
***********************************************************************
*/
int
SetDeviceValuators (ClientPtr client, DeviceIntPtr dev, int *valuators,
int first_valuator, int num_valuators)
{
LocalDevicePtr local = (LocalDevicePtr) dev->public.devicePrivate;
if (local->set_device_valuators)
return (*local->set_device_valuators)(local, valuators, first_valuator,
num_valuators);
return BadMatch;
}
/***********************************************************************
*
* Caller: ProcXChangeDeviceControl
*
* Change the specified device controls on an extension input device.
*
***********************************************************************
*/
int
ChangeDeviceControl (ClientPtr client, DeviceIntPtr dev, xDeviceCtl *control)
{
LocalDevicePtr local = (LocalDevicePtr)dev->public.devicePrivate;
if (!local->control_proc) {
switch (control->control) {
case DEVICE_CORE:
case DEVICE_RESOLUTION:
case DEVICE_ABS_CALIB:
case DEVICE_ABS_AREA:
return Success;
default:
return BadMatch;
}
}
else {
return (*local->control_proc)(local, control);
}
}
void
AddOtherInputDevices()
{
}
#endif
int
NewInputDeviceRequest (InputOption *options, DeviceIntPtr *pdev)
{
IDevRec *idev = NULL;
InputDriverPtr drv = NULL;
InputInfoPtr pInfo = NULL;
InputOption *option = NULL;
DeviceIntPtr dev = NULL;
int rval = Success;
idev = xcalloc(sizeof(*idev), 1);
if (!idev)
return BadAlloc;
for (option = options; option; option = option->next) {
if (strcasecmp(option->key, "driver") == 0) {
if (idev->driver) {
rval = BadRequest;
goto unwind;
}
/* Memory leak for every attached device if we don't
* test if the module is already loaded first */
drv = xf86LookupInputDriver(option->value);
if (!drv)
if(xf86LoadOneModule(option->value, NULL))
drv = xf86LookupInputDriver(option->value);
if (!drv) {
xf86Msg(X_ERROR, "No input driver matching `%s'\n",
option->value);
rval = BadName;
goto unwind;
}
idev->driver = xstrdup(option->value);
if (!idev->driver) {
rval = BadAlloc;
goto unwind;
}
}
if (strcasecmp(option->key, "name") == 0 ||
strcasecmp(option->key, "identifier") == 0) {
if (idev->identifier) {
rval = BadRequest;
goto unwind;
}
idev->identifier = xstrdup(option->value);
if (!idev->identifier) {
rval = BadAlloc;
goto unwind;
}
}
}
if(!idev->driver || !idev->identifier) {
xf86Msg(X_ERROR, "No input driver/identifier specified (ignoring)\n");
rval = BadRequest;
goto unwind;
}
if (!drv->PreInit) {
xf86Msg(X_ERROR,
"Input driver `%s' has no PreInit function (ignoring)\n",
drv->driverName);
rval = BadImplementation;
goto unwind;
}
for (option = options; option; option = option->next) {
/* Steal option key/value strings from the provided list.
* We need those strings, the InputOption list doesn't. */
idev->commonOptions = xf86addNewOption(idev->commonOptions,
option->key, option->value);
option->key = NULL;
option->value = NULL;
}
pInfo = drv->PreInit(drv, idev, 0);
if (!pInfo) {
xf86Msg(X_ERROR, "PreInit returned NULL for \"%s\"\n", idev->identifier);
rval = BadMatch;
goto unwind;
}
else if (!(pInfo->flags & XI86_CONFIGURED)) {
xf86Msg(X_ERROR, "PreInit failed for input device \"%s\"\n",
idev->identifier);
rval = BadMatch;
goto unwind;
}
xf86ActivateDevice(pInfo);
dev = pInfo->dev;
ActivateDevice(dev);
if (dev->inited && dev->startup)
EnableDevice(dev);
*pdev = dev;
return Success;
unwind:
if(pInfo) {
if(drv->UnInit)
drv->UnInit(drv, pInfo, 0);
else
xf86DeleteInput(pInfo, 0);
}
if(idev->driver)
xfree(idev->driver);
if(idev->identifier)
xfree(idev->identifier);
xf86optionListFree(idev->commonOptions);
xfree(idev);
return rval;
}
void
DeleteInputDeviceRequest(DeviceIntPtr pDev)
{
LocalDevicePtr pInfo = (LocalDevicePtr) pDev->public.devicePrivate;
InputDriverPtr drv = pInfo->drv;
IDevRec *idev = pInfo->conf_idev;
RemoveDevice(pDev);
if(drv->UnInit)
drv->UnInit(drv, pInfo, 0);
else
xf86DeleteInput(pInfo, 0);
xfree(idev->driver);
xfree(idev->identifier);
xf86optionListFree(idev->commonOptions);
xfree(idev);
}
/*
* convenient functions to post events
*/
_X_EXPORT void
xf86PostMotionEvent(DeviceIntPtr device,
int is_absolute,
int first_valuator,
int num_valuators,
...)
{
va_list var;
int i = 0;
static int *valuators = NULL;
static int n_valuators = 0;
if (num_valuators > n_valuators) {
xfree (valuators);
valuators = NULL;
}
if (!valuators) {
valuators = xcalloc(sizeof(int), num_valuators);
n_valuators = num_valuators;
}
va_start(var, num_valuators);
for (i = 0; i < num_valuators; i++)
valuators[i] = va_arg(var, int);
va_end(var);
xf86PostMotionEventP(device, is_absolute, first_valuator, num_valuators, valuators);
}
_X_EXPORT void
xf86PostMotionEventP(DeviceIntPtr device,
int is_absolute,
int first_valuator,
int num_valuators,
int *valuators)
{
int i = 0, nevents = 0;
int dx, dy;
Bool drag = xf86SendDragEvents(device);
xEvent *xE = NULL;
int index;
int flags = 0;
if (is_absolute)
flags = POINTER_ABSOLUTE;
else
flags = POINTER_RELATIVE | POINTER_ACCELERATE;
#if XFreeXDGA
if (first_valuator == 0 && num_valuators >= 2) {
if (miPointerGetScreen(inputInfo.pointer)) {
index = miPointerGetScreen(inputInfo.pointer)->myNum;
if (is_absolute) {
dx = valuators[0] - device->valuator->lastx;
dy = valuators[1] - device->valuator->lasty;
}
else {
dx = valuators[0];
dy = valuators[1];
}
if (DGAStealMotionEvent(index, dx, dy))
return;
}
}
#endif
if (!xf86Events)
xf86Events = (xEvent *)xcalloc(sizeof(xEvent), GetMaximumEventsNum());
if (!xf86Events)
FatalError("Couldn't allocate event store\n");
nevents = GetPointerEvents(xf86Events, device, MotionNotify, 0,
flags, first_valuator, num_valuators,
valuators);
for (i = 0; i < nevents; i++) {
xE = xf86Events + i;
/* Don't post core motion events for devices not registered to send
* drag events. */
if (xE->u.u.type != MotionNotify || drag) {
mieqEnqueue(device, xf86Events + i);
}
}
}
_X_EXPORT void
xf86PostProximityEvent(DeviceIntPtr device,
int is_in,
int first_valuator,
int num_valuators,
...)
{
va_list var;
int i, nevents, *valuators = NULL;
valuators = xcalloc(sizeof(int), num_valuators);
va_start(var, num_valuators);
for (i = 0; i < num_valuators; i++)
valuators[i] = va_arg(var, int);
va_end(var);
if (!xf86Events)
xf86Events = (xEvent *)xcalloc(sizeof(xEvent), GetMaximumEventsNum());
if (!xf86Events)
FatalError("Couldn't allocate event store\n");
nevents = GetProximityEvents(xf86Events, device,
is_in ? ProximityIn : ProximityOut,
first_valuator, num_valuators, valuators);
for (i = 0; i < nevents; i++)
mieqEnqueue(device, xf86Events + i);
xfree(valuators);
}
_X_EXPORT void
xf86PostButtonEvent(DeviceIntPtr device,
int is_absolute,
int button,
int is_down,
int first_valuator,
int num_valuators,
...)
{
va_list var;
int *valuators = NULL;
int i = 0, nevents = 0;
int index;
#if XFreeXDGA
if (miPointerGetScreen(inputInfo.pointer)) {
index = miPointerGetScreen(inputInfo.pointer)->myNum;
if (DGAStealButtonEvent(index, button, is_down))
return;
}
#endif
valuators = xcalloc(sizeof(int), num_valuators);
va_start(var, num_valuators);
for (i = 0; i < num_valuators; i++)
valuators[i] = va_arg(var, int);
va_end(var);
if (!xf86Events)
xf86Events = (xEvent *)xcalloc(sizeof(xEvent), GetMaximumEventsNum());
if (!xf86Events)
FatalError("Couldn't allocate event store\n");
nevents = GetPointerEvents(xf86Events, device,
is_down ? ButtonPress : ButtonRelease, button,
is_absolute ? POINTER_ABSOLUTE :
POINTER_RELATIVE,
first_valuator, num_valuators, valuators);
for (i = 0; i < nevents; i++)
mieqEnqueue(device, xf86Events + i);
xfree(valuators);
}
_X_EXPORT void
xf86PostKeyEvent(DeviceIntPtr device,
unsigned int key_code,
int is_down,
int is_absolute,
int first_valuator,
int num_valuators,
...)
{
va_list var;
int i = 0, nevents = 0, *valuators = NULL;
/* instil confidence in the user */
DebugF("this function has never been tested properly. if things go quite "
"badly south after this message, then xf86PostKeyEvent is "
"broken.\n");
if (!xf86Events)
xf86Events = (xEvent *)xcalloc(sizeof(xEvent), GetMaximumEventsNum());
if (!xf86Events)
FatalError("Couldn't allocate event store\n");
if (is_absolute) {
valuators = xcalloc(sizeof(int), num_valuators);
va_start(var, num_valuators);
for (i = 0; i < num_valuators; i++)
valuators[i] = va_arg(var, int);
va_end(var);
nevents = GetKeyboardValuatorEvents(xf86Events, device,
is_down ? KeyPress : KeyRelease,
key_code, first_valuator,
num_valuators, valuators);
xfree(valuators);
}
else {
nevents = GetKeyboardEvents(xf86Events, device,
is_down ? KeyPress : KeyRelease,
key_code);
}
for (i = 0; i < nevents; i++)
mieqEnqueue(device, xf86Events + i);
}
_X_EXPORT void
xf86PostKeyboardEvent(DeviceIntPtr device,
unsigned int key_code,
int is_down)
{
int nevents = 0, i = 0;
int index;
#if XFreeXDGA
if (miPointerGetScreen(inputInfo.pointer)) {
index = miPointerGetScreen(inputInfo.pointer)->myNum;
if (DGAStealKeyEvent(index, key_code, is_down))
return;
}
#endif
if (!xf86Events)
xf86Events = (xEvent *)xcalloc(sizeof(xEvent), GetMaximumEventsNum());
if (!xf86Events)
FatalError("Couldn't allocate event store\n");
nevents = GetKeyboardEvents(xf86Events, device,
is_down ? KeyPress : KeyRelease, key_code);
for (i = 0; i < nevents; i++)
mieqEnqueue(device, xf86Events + i);
}
_X_EXPORT LocalDevicePtr
xf86FirstLocalDevice()
{
return xf86InputDevs;
}
/*
* Cx - raw data from touch screen
* Sxhigh - scaled highest dimension
* (remember, this is of rows - 1 because of 0 origin)
* Sxlow - scaled lowest dimension
* Rxhigh - highest raw value from touch screen calibration
* Rxlow - lowest raw value from touch screen calibration
*
* This function is the same for X or Y coordinates.
* You may have to reverse the high and low values to compensate for
* different orgins on the touch screen vs X.
*/
_X_EXPORT int
xf86ScaleAxis(int Cx,
int Sxhigh,
int Sxlow,
int Rxhigh,
int Rxlow )
{
int X;
int dSx = Sxhigh - Sxlow;
int dRx = Rxhigh - Rxlow;
dSx = Sxhigh - Sxlow;
if (dRx) {
X = ((dSx * (Cx - Rxlow)) / dRx) + Sxlow;
}
else {
X = 0;
ErrorF ("Divide by Zero in xf86ScaleAxis");
}
if (X > Sxlow)
X = Sxlow;
if (X < Sxhigh)
X = Sxhigh;
return (X);
}
/*
* This function checks the given screen against the current screen and
* makes changes if appropriate. It should be called from an XInput driver's
* ReadInput function before any events are posted, if the device is screen
* specific like a touch screen.
*/
_X_EXPORT void
xf86XInputSetScreen(LocalDevicePtr local,
int screen_number,
int x,
int y)
{
if (miPointerGetScreen(local->dev) !=
screenInfo.screens[screen_number]) {
miPointerSetScreen(local->dev, screen_number, x, y);
}
}
_X_EXPORT void
xf86InitValuatorAxisStruct(DeviceIntPtr dev, int axnum, int minval, int maxval,
int resolution, int min_res, int max_res)
{
if (!dev || !dev->valuator)
return;
InitValuatorAxisStruct(dev, axnum, minval, maxval, resolution, min_res,
max_res);
}
/*
* Set the valuator values to be in synch with dix/event.c
* DefineInitialRootWindow().
*/
_X_EXPORT void
xf86InitValuatorDefaults(DeviceIntPtr dev, int axnum)
{
if (axnum == 0) {
dev->valuator->axisVal[0] = screenInfo.screens[0]->width / 2;
dev->valuator->lastx = dev->valuator->axisVal[0];
}
else if (axnum == 1) {
dev->valuator->axisVal[1] = screenInfo.screens[0]->height / 2;
dev->valuator->lasty = dev->valuator->axisVal[1];
}
}
/**
* Deactivate a device. Call this function from the driver if you receive a
* read error or something else that spoils your day.
* Device will be moved to the off_devices list, but it will still be there
* until you really clean up after it.
* Notifies the client about an inactive device.
*
* @param panic True if device is unrecoverable and needs to be removed.
*/
_X_EXPORT void
xf86DisableDevice(DeviceIntPtr dev, Bool panic)
{
devicePresenceNotify ev;
DeviceIntRec dummyDev;
if(!panic)
{
DisableDevice(dev);
} else
{
ev.type = DevicePresenceNotify;
ev.time = currentTime.milliseconds;
ev.devchange = DeviceUnrecoverable;
ev.deviceid = dev->id;
dummyDev.id = 0;
SendEventToAllWindows(&dummyDev, DevicePresenceNotifyMask,
(xEvent *) &ev, 1);
DeleteInputDeviceRequest(dev);
}
}
/**
* Reactivate a device. Call this function from the driver if you just found
* out that the read error wasn't quite that bad after all.
* Device will be re-activated, and an event sent to the client.
*/
_X_EXPORT void
xf86EnableDevice(DeviceIntPtr dev)
{
EnableDevice(dev);
}
/* end of xf86Xinput.c */
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