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Diffstat (limited to 'xorg-server/Xi/grabdev.c')
| -rw-r--r-- | xorg-server/Xi/grabdev.c | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/xorg-server/Xi/grabdev.c b/xorg-server/Xi/grabdev.c new file mode 100644 index 000000000..0671e0ea7 --- /dev/null +++ b/xorg-server/Xi/grabdev.c @@ -0,0 +1,198 @@ +/************************************************************ + +Copyright 1989, 1998 The Open Group + +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. + +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 +OPEN GROUP 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 Open Group 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 Open Group. + +Copyright 1989 by Hewlett-Packard Company, Palo Alto, California. + + All Rights Reserved + +Permission to use, copy, modify, and distribute this software and its +documentation for any purpose and without fee is hereby granted, +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 Hewlett-Packard not be +used in advertising or publicity pertaining to distribution of the +software without specific, written prior permission. + +HEWLETT-PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING +ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL +HEWLETT-PACKARD 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. + +********************************************************/ + +/*********************************************************************** + * + * Extension function to grab an extension device. + * + */ + +#define NEED_EVENTS +#define NEED_REPLIES +#ifdef HAVE_DIX_CONFIG_H +#include <dix-config.h> +#endif + +#include "inputstr.h" /* DeviceIntPtr */ +#include "windowstr.h" /* window structure */ +#include <X11/extensions/XI.h> +#include <X11/extensions/XIproto.h> +#include "exglobals.h" +#include "dixevents.h" /* GrabDevice */ + +#include "grabdev.h" + +extern XExtEventInfo EventInfo[]; +extern int ExtEventIndex; + +/*********************************************************************** + * + * Swap the request if the requestor has a different byte order than us. + * + */ + +int +SProcXGrabDevice(ClientPtr client) +{ + char n; + + REQUEST(xGrabDeviceReq); + swaps(&stuff->length, n); + REQUEST_AT_LEAST_SIZE(xGrabDeviceReq); + swapl(&stuff->grabWindow, n); + swapl(&stuff->time, n); + swaps(&stuff->event_count, n); + + if (stuff->length != (sizeof(xGrabDeviceReq) >> 2) + stuff->event_count) + return BadLength; + + SwapLongs((CARD32 *) (&stuff[1]), stuff->event_count); + + return (ProcXGrabDevice(client)); +} + +/*********************************************************************** + * + * Grab an extension device. + * + */ + +int +ProcXGrabDevice(ClientPtr client) +{ + int rc; + xGrabDeviceReply rep; + DeviceIntPtr dev; + struct tmask tmp[EMASKSIZE]; + + REQUEST(xGrabDeviceReq); + REQUEST_AT_LEAST_SIZE(xGrabDeviceReq); + + if (stuff->length != (sizeof(xGrabDeviceReq) >> 2) + stuff->event_count) + return BadLength; + + rep.repType = X_Reply; + rep.RepType = X_GrabDevice; + rep.sequenceNumber = client->sequence; + rep.length = 0; + + rc = dixLookupDevice(&dev, stuff->deviceid, client, DixGrabAccess); + if (rc != Success) + return rc; + + if ((rc = CreateMaskFromList(client, (XEventClass *) & stuff[1], + stuff->event_count, tmp, dev, + X_GrabDevice)) != Success) + return rc; + + rc = GrabDevice(client, dev, stuff->this_device_mode, + stuff->other_devices_mode, stuff->grabWindow, + stuff->ownerEvents, stuff->time, + tmp[stuff->deviceid].mask, &rep.status); + + if (rc != Success) + return rc; + + WriteReplyToClient(client, sizeof(xGrabDeviceReply), &rep); + return Success; +} + +/*********************************************************************** + * + * This procedure creates an event mask from a list of XEventClasses. + * + */ + +int +CreateMaskFromList(ClientPtr client, XEventClass * list, int count, + struct tmask *mask, DeviceIntPtr dev, int req) +{ + int rc, i, j; + int device; + DeviceIntPtr tdev; + + for (i = 0; i < EMASKSIZE; i++) { + mask[i].mask = 0; + mask[i].dev = NULL; + } + + for (i = 0; i < count; i++, list++) { + device = *list >> 8; + if (device > 255) + return BadClass; + + rc = dixLookupDevice(&tdev, device, client, DixReadAccess); + if (rc != BadDevice && rc != Success) + return rc; + if (rc == BadDevice || (dev != NULL && tdev != dev)) + return BadClass; + + for (j = 0; j < ExtEventIndex; j++) + if (EventInfo[j].type == (*list & 0xff)) { + mask[device].mask |= EventInfo[j].mask; + mask[device].dev = (Pointer) tdev; + break; + } + } + return Success; +} + +/*********************************************************************** + * + * This procedure writes the reply for the XGrabDevice function, + * if the client and server have a different byte ordering. + * + */ + +void +SRepXGrabDevice(ClientPtr client, int size, xGrabDeviceReply * rep) +{ + char n; + + swaps(&rep->sequenceNumber, n); + swapl(&rep->length, n); + WriteToClient(client, size, (char *)rep); +} |