fab563bf8f
A XTest virtual slave device pair (kbd/ptr) exists for every master device pair. This is so XTest events are correctly propogated via slave devices up to Master devices and the classes are correctly changed along the way. We add the XTest slave device pair to the Virtual Core pointer and provide a simple way of creating the devices. A XTest Slave Device is identified by the XTstDevicePrivateKey property being set in the devices devProperties XI events are still propagated through the matching device, in the hope the client knows what it is doing. Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
400 lines
14 KiB
C
400 lines
14 KiB
C
/*
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* Copyright 2007-2008 Peter Hutterer
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Author: Peter Hutterer, University of South Australia, NICTA
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*/
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/***********************************************************************
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*
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* Request change in the device hierarchy.
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*
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*/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <X11/X.h> /* for inputstr.h */
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#include <X11/Xproto.h> /* Request macro */
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#include "inputstr.h" /* DeviceIntPtr */
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#include "windowstr.h" /* window structure */
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#include "scrnintstr.h" /* screen structure */
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#include <X11/extensions/XI.h>
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#include <X11/extensions/XIproto.h>
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#include <X11/extensions/geproto.h>
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#include "extnsionst.h"
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#include "exevents.h"
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#include "exglobals.h"
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#include "geext.h"
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#include "xace.h"
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#include "xkbsrv.h"
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#include "chdevhier.h"
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extern DevPrivateKey XTstDevicePrivateKey;
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/***********************************************************************
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*
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* This procedure allows a client to change the device hierarchy through
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* adding new master devices, removing them, etc.
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*
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*/
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int SProcXChangeDeviceHierarchy(ClientPtr client)
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{
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char n;
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REQUEST(xChangeDeviceHierarchyReq);
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swaps(&stuff->length, n);
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return (ProcXChangeDeviceHierarchy(client));
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}
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#define SWAPIF(cmd) if (client->swapped) { cmd; }
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int
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ProcXChangeDeviceHierarchy(ClientPtr client)
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{
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DeviceIntPtr ptr, keybd, xtstptr, xtstkeybd;
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DeviceIntRec dummyDev;
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xAnyHierarchyChangeInfo *any;
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int required_len = sizeof(xChangeDeviceHierarchyReq);
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char n;
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int rc = Success;
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int nchanges = 0;
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deviceHierarchyChangedEvent ev;
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REQUEST(xChangeDeviceHierarchyReq);
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REQUEST_AT_LEAST_SIZE(xChangeDeviceHierarchyReq);
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any = (xAnyHierarchyChangeInfo*)&stuff[1];
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while(stuff->num_changes--)
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{
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SWAPIF(swapl(&any->type, n));
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SWAPIF(swaps(&any->length, n));
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required_len += any->length;
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if ((stuff->length * 4) < required_len)
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return BadLength;
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switch(any->type)
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{
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case CH_CreateMasterDevice:
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{
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xCreateMasterInfo* c = (xCreateMasterInfo*)any;
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char* name;
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SWAPIF(swaps(&c->namelen, n));
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name = xcalloc(c->namelen + 1, sizeof(char));
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strncpy(name, (char*)&c[1], c->namelen);
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rc = AllocDevicePair(client, name, &ptr, &keybd, TRUE);
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if (rc != Success)
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{
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xfree(name);
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goto unwind;
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}
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if (!c->sendCore)
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ptr->coreEvents = keybd->coreEvents = FALSE;
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/* Allocate virtual slave devices for xtest events */
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rc = AllocXtstDevice(client, name, &xtstptr, &xtstkeybd);
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if (rc != Success)
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{
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xfree(name);
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goto unwind;
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}
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ActivateDevice(ptr);
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ActivateDevice(keybd);
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ActivateDevice(xtstptr);
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ActivateDevice(xtstkeybd);
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if (c->enable)
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{
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EnableDevice(ptr);
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EnableDevice(keybd);
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EnableDevice(xtstptr);
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EnableDevice(xtstkeybd);
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}
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/* Attach the XTest virtual devices to the newly
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created master device */
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AttachDevice(NULL, xtstptr, ptr);
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AttachDevice(NULL, xtstkeybd, keybd);
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xfree(name);
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nchanges++;
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}
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break;
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case CH_RemoveMasterDevice:
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{
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xRemoveMasterInfo* r = (xRemoveMasterInfo*)any;
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DeviceIntPtr xtstdevice;
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if (r->returnMode != AttachToMaster &&
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r->returnMode != Floating)
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return BadValue;
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rc = dixLookupDevice(&ptr, r->deviceid, client,
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DixDestroyAccess);
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if (rc != Success)
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goto unwind;
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if (!ptr->isMaster)
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{
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client->errorValue = r->deviceid;
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rc = BadDevice;
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goto unwind;
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}
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/* XXX: For now, don't allow removal of VCP, VCK */
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if (ptr == inputInfo.pointer ||
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ptr == inputInfo.keyboard)
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{
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rc = BadDevice;
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goto unwind;
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}
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for(xtstdevice = inputInfo.devices; xtstdevice ; xtstdevice = xtstdevice->next )
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if( !xtstdevice->isMaster && xtstdevice->u.master == ptr &&
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dixLookupPrivate(&xtstdevice->devPrivates, XTstDevicePrivateKey ))
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break;
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rc = dixLookupDevice(&xtstptr, xtstdevice->id, client,
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DixDestroyAccess);
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if (rc != Success)
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goto unwind;
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/* find keyboards to destroy */
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if (IsPointerDevice(ptr))
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{
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rc = dixLookupDevice(&keybd,
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ptr->spriteInfo->paired->id,
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client,
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DixDestroyAccess);
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if (rc != Success)
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goto unwind;
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}
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else
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{
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keybd = ptr;
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rc = dixLookupDevice(&ptr,
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keybd->spriteInfo->paired->id,
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client,
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DixDestroyAccess);
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if (rc != Success)
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goto unwind;
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}
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/* handle xtst pointer / keyboard slave devices */
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if ( IsPointerDevice(xtstptr))
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{
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/* Search the matching keyboard */
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for(xtstdevice = inputInfo.devices; xtstdevice ; xtstdevice = xtstdevice->next )
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if( !xtstdevice->isMaster &&
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xtstdevice->u.master == keybd &&
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IsKeyboardDevice(xtstdevice) &&
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dixLookupPrivate(&xtstdevice->devPrivates, XTstDevicePrivateKey ))
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break;
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rc = dixLookupDevice(&xtstkeybd,
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xtstdevice->id,
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client,
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DixDestroyAccess);
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if (rc != Success)
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goto unwind;
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}
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else
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{
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xtstkeybd = xtstptr;
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/* Search the matching pointer */
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for(xtstdevice = inputInfo.devices; xtstdevice ; xtstdevice = xtstdevice->next )
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if( !xtstdevice->isMaster &&
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xtstdevice->u.master == ptr &&
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IsPointerDevice(xtstdevice) &&
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dixLookupPrivate(&xtstdevice->devPrivates, XTstDevicePrivateKey )
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)
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break;
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rc = dixLookupDevice(&xtstptr,
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xtstdevice->id,
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client,
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DixDestroyAccess);
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if (rc != Success)
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goto unwind;
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}
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/* Disabling sends the devices floating, reattach them if
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* desired. */
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if (r->returnMode == AttachToMaster)
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{
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DeviceIntPtr attached,
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newptr,
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newkeybd;
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rc = dixLookupDevice(&newptr, r->returnPointer,
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client, DixWriteAccess);
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if (rc != Success)
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goto unwind;
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if (!newptr->isMaster)
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{
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client->errorValue = r->returnPointer;
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rc = BadDevice;
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goto unwind;
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}
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rc = dixLookupDevice(&newkeybd, r->returnKeyboard,
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client, DixWriteAccess);
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if (rc != Success)
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goto unwind;
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if (!newkeybd->isMaster)
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{
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client->errorValue = r->returnKeyboard;
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rc = BadDevice;
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goto unwind;
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}
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for (attached = inputInfo.devices;
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attached;
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attached = attached->next)
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{
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if (!attached->isMaster) {
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if (attached->u.master == ptr)
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AttachDevice(client, attached, newptr);
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if (attached->u.master == keybd)
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AttachDevice(client, attached, newkeybd);
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}
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}
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}
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/* can't disable until we removed pairing */
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keybd->spriteInfo->paired = NULL;
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ptr->spriteInfo->paired = NULL;
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xtstptr->spriteInfo->paired = NULL;
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xtstkeybd->spriteInfo->paired = NULL;
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/* disable the remove the devices, xtst devices must be done first
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else the sprites they rely on will be destroyed */
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DisableDevice(xtstptr);
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DisableDevice(xtstkeybd);
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DisableDevice(keybd);
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DisableDevice(ptr);
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RemoveDevice(xtstptr);
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RemoveDevice(xtstkeybd);
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RemoveDevice(keybd);
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RemoveDevice(ptr);
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nchanges++;
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}
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break;
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case CH_ChangeAttachment:
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{
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DeviceIntPtr *xtstdevice;
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xChangeAttachmentInfo* c = (xChangeAttachmentInfo*)any;
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rc = dixLookupDevice(&ptr, c->deviceid, client,
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DixWriteAccess);
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if (rc != Success)
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goto unwind;
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if (ptr->isMaster)
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{
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client->errorValue = c->deviceid;
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rc = BadDevice;
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goto unwind;
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}
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xtstdevice = dixLookupPrivate( &ptr->devPrivates,
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XTstDevicePrivateKey );
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/* Don't allow changes to Xtst Devices, these are fixed */
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if( xtstdevice )
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{
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client->errorValue = c->deviceid;
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rc = BadDevice;
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goto unwind;
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}
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if (c->changeMode == Floating)
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AttachDevice(client, ptr, NULL);
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else
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{
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DeviceIntPtr newmaster;
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rc = dixLookupDevice(&newmaster, c->newMaster,
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client, DixWriteAccess);
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if (rc != Success)
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goto unwind;
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if (!newmaster->isMaster)
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{
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client->errorValue = c->newMaster;
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rc = BadDevice;
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goto unwind;
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}
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if (!((IsPointerDevice(newmaster) &&
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IsPointerDevice(ptr)) ||
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(IsKeyboardDevice(newmaster) &&
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IsKeyboardDevice(ptr))))
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{
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rc = BadDevice;
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goto unwind;
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}
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AttachDevice(client, ptr, newmaster);
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}
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nchanges++;
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}
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break;
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}
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any = (xAnyHierarchyChangeInfo*)((char*)any + any->length);
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}
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unwind:
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if (nchanges > 0) /* even if an error occured, we need to send an event if
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we changed anything in the hierarchy. */
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{
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ev.type = GenericEvent;
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ev.extension = IReqCode;
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ev.length = 0;
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ev.evtype = XI_DeviceHierarchyChangedNotify;
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ev.time = GetTimeInMillis();
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SendEventToAllWindows(&dummyDev, XI_DeviceHierarchyChangedMask,
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(xEvent*)&ev, 1);
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}
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return rc;
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}
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