/* $XConsortium: pl_pick.c,v 1.13 94/04/17 20:22:43 rws Exp $ */ /* Copyright (c) 1992 X Consortium 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 X CONSORTIUM 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 X Consortium 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 X Consortium. */ /****************************************************************************** Copyright 1987,1991 by Digital Equipment Corporation, Maynard, Massachusetts Copyright 1992 by ShoGraphics, Inc., Mountain View, California All Rights Reserved 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 Digital or ShowGraphics not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission. Digital and ShowGraphics make no representations about the suitability of this software for any purpose. It is provided "as is" without express or implied warranty. DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL DIGITAL 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. SHOGRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SHOGRAPHICS 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. *************************************************************************/ /* * NEED EVENTS needs to be defined when including Xproto.h so xEvent * can be sucked in. */ #define NEED_EVENTS #include "PEXlib.h" #include "PEXlibint.h" #define GetPickRecordSize(_pickType) \ (_pickType == PEXPickDeviceNPCHitVolume ? SIZEOF (pexPD_NPC_HitVolume) : \ (_pickType == PEXPickDeviceDCHitBox ? SIZEOF (pexPD_DC_HitBox) : 0)) PEXPickMeasure PEXCreatePickMeasure (display, wks, devType) INPUT Display *display; INPUT PEXWorkstation wks; INPUT int devType; { register pexCreatePickMeasureReq *req; char *pBuf; PEXPickMeasure pm; /* * Get a Pick Measure resource id from X. */ pm = XAllocID (display); /* * Lock around the critical section, for multithreading. */ LockDisplay (display); /* * Put the request in the X request buffer. */ PEXGetReq (CreatePickMeasure, pBuf); BEGIN_REQUEST_HEADER (CreatePickMeasure, pBuf, req); PEXStoreReqHead (CreatePickMeasure, req); req->wks = wks; req->pm = pm; req->devType = devType; END_REQUEST_HEADER (CreatePickMeasure, pBuf, req); /* * Done, so unlock and check for synchronous-ness. */ UnlockDisplay (display); PEXSyncHandle (display); return (pm); } void PEXFreePickMeasure (display, pm) INPUT Display *display; INPUT PEXPickMeasure pm; { register pexFreePickMeasureReq *req; char *pBuf; /* * Lock around the critical section, for multithreading. */ LockDisplay (display); /* * Put the request in the X request buffer. */ PEXGetReq (FreePickMeasure, pBuf); BEGIN_REQUEST_HEADER (FreePickMeasure, pBuf, req); PEXStoreReqHead (FreePickMeasure, req); req->id = pm; END_REQUEST_HEADER (FreePickMeasure, pBuf, req); /* * Done, so unlock and check for synchronous-ness. */ UnlockDisplay (display); PEXSyncHandle (display); } PEXPMAttributes * PEXGetPickMeasure (display, pm, valueMask) INPUT Display *display; INPUT PEXPickMeasure pm; INPUT unsigned long valueMask; { register pexGetPickMeasureReq *req; char *pBuf, *pBufSave; pexGetPickMeasureReply rep; PEXPMAttributes *ppmi; unsigned long f; int i; unsigned count; /* * Lock around the critical section, for multithreading. */ LockDisplay (display); /* * Put the request in the X request buffer and get a reply. */ PEXGetReq (GetPickMeasure, pBuf); BEGIN_REQUEST_HEADER (GetPickMeasure, pBuf, req); PEXStoreReqHead (GetPickMeasure, req); req->pm = pm; req->itemMask = valueMask; END_REQUEST_HEADER (GetPickMeasure, pBuf, req); if (_XReply (display, (xReply *)&rep, 0, xFalse) == 0) { UnlockDisplay (display); PEXSyncHandle (display); return (NULL); /* return an error */ } /* * Read the reply data into a scratch buffer. */ XREAD_INTO_SCRATCH (display, pBufSave, rep.length << 2); pBuf = pBufSave; /* * Allocate a buffer for the replies to pass back to the client. */ ppmi = (PEXPMAttributes *) Xmalloc (sizeof (PEXPMAttributes)); ppmi->pick_path.count = 0; ppmi->pick_path.elements = NULL; for (i = 0; i < (PEXPMMaxShift + 1); i++) { f = (1L << i); if (valueMask & f) { switch (f) { case PEXPMStatus: EXTRACT_LOV_CARD16 (pBuf, ppmi->status); break; case PEXPMPath: EXTRACT_CARD32 (pBuf, count); ppmi->pick_path.count = count; ppmi->pick_path.elements = (PEXPickElementRef *) Xmalloc (count * sizeof (PEXPickElementRef)); EXTRACT_LISTOF_PICKELEMREF (count, pBuf, ppmi->pick_path.elements); break; } } } FINISH_WITH_SCRATCH (display, pBufSave, rep.length << 2); /* * Done, so unlock and check for synchronous-ness. */ UnlockDisplay (display); PEXSyncHandle (display); return (ppmi); } void PEXUpdatePickMeasure (display, pick_measure, pick_device_type, pick_record) INPUT Display *display; INPUT PEXPickMeasure pick_measure; INPUT int pick_device_type; INPUT PEXPickRecord *pick_record; { register pexUpdatePickMeasureReq *req; char *pBuf; int numBytes; int fpConvert; int fpFormat; /* * Lock around the critical section, for multithreading. */ LockDisplay (display); /* * Put the request in the X request buffer. */ numBytes = GetPickRecordSize (pick_device_type); PEXGetReqExtra (UpdatePickMeasure, numBytes, pBuf); BEGIN_REQUEST_HEADER (UpdatePickMeasure, pBuf, req); CHECK_FP (fpConvert, fpFormat); PEXStoreReqHead (UpdatePickMeasure, req); req->pm = pick_measure; req->numBytes = numBytes; END_REQUEST_HEADER (UpdatePickMeasure, pBuf, req); STORE_PICK_RECORD (pick_device_type, numBytes, pick_record, pBuf, fpConvert, fpFormat); /* * Done, so unlock and check for synchronous-ness. */ UnlockDisplay (display); PEXSyncHandle (display); } PEXPDAttributes * PEXGetPickDevice (display, wks, devType, valueMask) INPUT Display *display; INPUT PEXWorkstation wks; INPUT int devType; INPUT unsigned long valueMask; { register pexGetPickDeviceReq *req; char *pBuf, *pBufSave; pexGetPickDeviceReply rep; PEXPDAttributes *ppdi; unsigned long f; int i; unsigned count; int size; int fpConvert; int fpFormat; /* * Lock around the critical section, for multithreading. */ LockDisplay (display); /* * Put the request in the X request buffer and get a reply. */ PEXGetReq (GetPickDevice, pBuf); BEGIN_REQUEST_HEADER (GetPickDevice, pBuf, req); CHECK_FP (fpConvert, fpFormat); PEXStoreFPReqHead (GetPickDevice, fpFormat, req); req->wks = wks; req->itemMask = valueMask; req->devType = devType; END_REQUEST_HEADER (GetPickDevice, pBuf, req); if (_XReply (display, (xReply *)&rep, 0, xFalse) == 0) { UnlockDisplay (display); PEXSyncHandle (display); return (NULL); /* return an error */ } /* * Read the reply data into a scratch buffer. */ XREAD_INTO_SCRATCH (display, pBufSave, rep.length << 2); pBuf = pBufSave; /* * Allocate a buffer for the replies to pass back to the client. */ ppdi = (PEXPDAttributes *) Xmalloc (sizeof (PEXPDAttributes)); ppdi->path.count = 0; ppdi->path.elements = NULL; for (i = 0; i < (PEXPDMaxShift + 1); i++) { f = (1L << i); if (valueMask & f) { switch (f) { case PEXPDPickStatus: EXTRACT_LOV_CARD16 (pBuf, ppdi->status); break; case PEXPDPickPath: EXTRACT_CARD32 (pBuf, count); ppdi->path.count = count; ppdi->path.elements = (PEXPickElementRef *) Xmalloc (count * sizeof (PEXPickElementRef)); EXTRACT_LISTOF_PICKELEMREF (count, pBuf, ppdi->path.elements); break; case PEXPDPickPathOrder: EXTRACT_LOV_CARD16 (pBuf, ppdi->path_order); break; case PEXPDPickIncl: EXTRACT_CARD32 (pBuf, ppdi->inclusion); break; case PEXPDPickExcl: EXTRACT_CARD32 (pBuf, ppdi->exclusion); break; case PEXPDPickDataRec: EXTRACT_CARD32 (pBuf, size); EXTRACT_PICK_RECORD (pBuf, devType, size, ppdi->pick_record, fpConvert, fpFormat); break; case PEXPDPromptEchoType: EXTRACT_LOV_INT16 (pBuf, ppdi->prompt_echo_type); break; case PEXPDEchoVolume: EXTRACT_VIEWPORT (pBuf, ppdi->echo_volume, fpConvert, fpFormat); break; case PEXPDEchoSwitch: EXTRACT_LOV_CARD16 (pBuf, ppdi->echo_switch); break; } } } FINISH_WITH_SCRATCH (display, pBufSave, rep.length << 2); /* * Done, so unlock and check for synchronous-ness. */ UnlockDisplay (display); PEXSyncHandle (display); return (ppdi); } void PEXChangePickDevice (display, wks, devType, valueMask, values) INPUT Display *display; INPUT PEXWorkstation wks; INPUT int devType; INPUT unsigned long valueMask; INPUT PEXPDAttributes *values; { register pexChangePickDeviceReq *req; char *pBuf; char *pSend; unsigned long f; unsigned long size; PEXPickRecord *pick_record; int i; int fpConvert; int fpFormat; /* * Lock around the critical section, for multithreading. */ LockDisplay (display); /* * Put the request in the X request buffer. */ PEXGetReq (ChangePickDevice, pBuf); BEGIN_REQUEST_HEADER (ChangePickDevice, pBuf, req); CHECK_FP (fpConvert, fpFormat); PEXStoreFPReqHead (ChangePickDevice, fpFormat, req); req->wks = wks; req->itemMask = valueMask; req->devType = devType; /* * Allocate a scratch buffer used to pack the attributes. It's not * worth computing the exact amount of memory needed, so assume the * worse case. */ size = 8 * SIZEOF (CARD32) + (SIZEOF (pexPickElementRef) * ((valueMask & PEXPDPickPath) ? values->path.count : 0)) + sizeof (PEXPickRecord) + SIZEOF (pexViewport); pBuf = pSend = (char *) _XAllocScratch (display, size); for (i = 0; i < (PEXPDMaxShift + 1); i++) { f = (1L << i); if (valueMask & f) { switch (f) { case PEXPDPickStatus: STORE_CARD32 (values->status, pBuf); break; case PEXPDPickPath: STORE_CARD32 (values->path.count, pBuf); STORE_LISTOF_PICKELEMREF (values->path.count, values->path.elements, pBuf); break; case PEXPDPickPathOrder: STORE_CARD32 (values->path_order, pBuf); break; case PEXPDPickIncl: STORE_CARD32 (values->inclusion, pBuf); break; case PEXPDPickExcl: STORE_CARD32 (values->exclusion, pBuf); break; case PEXPDPickDataRec: size = GetPickRecordSize (devType); STORE_CARD32 (size, pBuf); pick_record = (PEXPickRecord *) &(values->pick_record); STORE_PICK_RECORD (devType, size, pick_record, pBuf, fpConvert, fpFormat); break; case PEXPDPromptEchoType: STORE_CARD32 (values->prompt_echo_type, pBuf); break; case PEXPDEchoVolume: STORE_VIEWPORT (values->echo_volume, pBuf, fpConvert, fpFormat); break; case PEXPDEchoSwitch: STORE_CARD32 (values->echo_switch, pBuf); break; } } } size = pBuf - pSend; req->length += NUMWORDS (size); END_REQUEST_HEADER (ChangePickDevice, pBuf, req); if (size > 0) Data (display, pSend, size); /* * Done, so unlock and check for synchronous-ness. */ UnlockDisplay (display); PEXSyncHandle (display); } /* * Routine to convert a protocol-format event (wire) to a client event * structure (client) for a PEXMaxHitsReachedEvent. XESetWireToEvent is * called in PEXInitialize to set this up with Xlib. */ Status _PEXConvertMaxHitsEvent (display, client, wire) INPUT Display *display; INPUT XEvent *client; INPUT xEvent *wire; { pexMaxHitsReachedEvent *wireevent; PEXMaxHitsReachedEvent *clientevent; /* * Set up the pointers. */ wireevent = (pexMaxHitsReachedEvent *) wire; clientevent = (PEXMaxHitsReachedEvent *) client; /* * Now fill in the client structure. */ clientevent->type = wireevent->type & 0x7f; clientevent->serial = wireevent->sequenceNumber; clientevent->send_event = (wireevent->type & 0x80) != 0; /* * MSB set if event came from SendEvent request. */ clientevent->display = display; clientevent->renderer = wireevent->rdr; /* * Tell Xlib to add this to the event queue. */ return (True); } void PEXBeginPickOne (display, drawable, renderer, structure_id, method, pick_device_type, pick_record) INPUT Display *display; INPUT Drawable drawable; INPUT PEXRenderer renderer; INPUT long structure_id; INPUT int method; INPUT int pick_device_type; INPUT PEXPickRecord *pick_record; { register pexBeginPickOneReq *req; char *pBuf; unsigned int rec_size; int fpConvert; int fpFormat; /* * Lock around the critical section, for multithreading. */ LockDisplay (display); /* * Put the request in the X request buffer. */ rec_size = GetPickRecordSize (pick_device_type); PEXGetReqExtra (BeginPickOne, (4 + rec_size), pBuf); BEGIN_REQUEST_HEADER (BeginPickOne, pBuf, req); CHECK_FP (fpConvert, fpFormat); PEXStoreFPReqExtraHead (BeginPickOne, fpFormat, (4 + rec_size), req); req->method = method; req->rdr = renderer; req->drawable = drawable; req->sid = structure_id; END_REQUEST_HEADER (BeginPickOne, pBuf, req); STORE_INT16 (pick_device_type, pBuf); pBuf += 2; /* pad */ STORE_PICK_RECORD (pick_device_type, rec_size, pick_record, pBuf, fpConvert, fpFormat); /* * Done, so unlock and check for synchronous-ness. */ UnlockDisplay (display); PEXSyncHandle (display); } PEXPickPath * PEXEndPickOne (display, renderer, status_return, undetectable_return) INPUT Display *display; INPUT PEXRenderer renderer; OUTPUT int *status_return; OUTPUT int *undetectable_return; { register pexEndPickOneReq *req; char *pBuf; pexEndPickOneReply rep; PEXPickPath *pathRet; unsigned int size; /* * Lock around the critical section, for multithreading. */ LockDisplay (display); /* * Put the request in the X request buffer and get a reply. */ PEXGetReq (EndPickOne, pBuf); BEGIN_REQUEST_HEADER (EndPickOne, pBuf, req); PEXStoreReqHead (EndPickOne, req); req->rdr = renderer; END_REQUEST_HEADER (EndPickOne, pBuf, req); if (_XReply (display, (xReply *)&rep, 0, xFalse) == 0) { UnlockDisplay (display); PEXSyncHandle (display); return (NULL); /* return an error */ } *status_return = rep.pickStatus; *undetectable_return = rep.betterPick; /* * Allocate a buffer for the path to pass back to the client. * If possible, use the pick path cache. */ size = sizeof (PEXPickPath) + rep.numPickElRefs * sizeof (PEXPickElementRef); if (!PEXPickCacheInUse && size <= PEXPickCacheSize) { pathRet = PEXPickCache; PEXPickCacheInUse = 1; } else pathRet = (PEXPickPath *) Xmalloc (size); pathRet->elements = (PEXPickElementRef *) (pathRet + 1); pathRet->count = rep.numPickElRefs; XREAD_LISTOF_PICKELEMREF (display, rep.numPickElRefs, pathRet->elements); /* * Done, so unlock and check for synchronous-ness. */ UnlockDisplay (display); PEXSyncHandle (display); return (pathRet); } PEXPickPath * PEXPickOne (display, drawable, renderer, structure, method, pick_device_type, pick_record, status_return, undetectable_return) INPUT Display *display; INPUT Drawable drawable; INPUT PEXRenderer renderer; INPUT PEXStructure structure; INPUT int method; INPUT int pick_device_type; INPUT PEXPickRecord *pick_record; OUTPUT int *status_return; OUTPUT int *undetectable_return; { register pexPickOneReq *req; char *pBuf; pexPickOneReply rep; unsigned int rec_size; unsigned int size; int fpConvert; int fpFormat; PEXPickPath *pathRet; /* * Lock around the critical section, for multithreading. */ LockDisplay (display); /* * Put the request in the X request buffer and get a reply. */ rec_size = GetPickRecordSize (pick_device_type); PEXGetReqExtra (PickOne, (4 + rec_size), pBuf); BEGIN_REQUEST_HEADER (PickOne, pBuf, req); CHECK_FP (fpConvert, fpFormat); PEXStoreFPReqExtraHead (PickOne, fpFormat, (4 + rec_size), req); req->method = method; req->rdr = renderer; req->drawable = drawable; req->sid = structure; END_REQUEST_HEADER (PickOne, pBuf, req); STORE_INT16 (pick_device_type, pBuf); pBuf += 2; /* pad */ STORE_PICK_RECORD (pick_device_type, rec_size, pick_record, pBuf, fpConvert, fpFormat); if (_XReply (display, (xReply *)&rep, 0, xFalse) == 0) { UnlockDisplay (display); PEXSyncHandle (display); return (NULL); /* return an error */ } *status_return = rep.pickStatus; *undetectable_return = rep.betterPick; /* * Allocate a buffer for the path to pass back to the client. * If possible, use the pick path cache. */ size = sizeof (PEXPickPath) + rep.numPickElRefs * sizeof (PEXPickElementRef); if (!PEXPickCacheInUse && size <= PEXPickCacheSize) { pathRet = PEXPickCache; PEXPickCacheInUse = 1; } else pathRet = (PEXPickPath *) Xmalloc (size); pathRet->elements = (PEXPickElementRef *) (pathRet + 1); pathRet->count = rep.numPickElRefs; XREAD_LISTOF_PICKELEMREF (display, rep.numPickElRefs, pathRet->elements); /* * Done, so unlock and check for synchronous-ness. */ UnlockDisplay (display); PEXSyncHandle (display); return (pathRet); } void PEXBeginPickAll (display, drawable, renderer, structure_id, method, send_event, max_hits, pick_device_type, pick_record) INPUT Display *display; INPUT Drawable drawable; INPUT PEXRenderer renderer; INPUT long structure_id; INPUT int method; INPUT int send_event; INPUT int max_hits; INPUT int pick_device_type; INPUT PEXPickRecord *pick_record; { register pexBeginPickAllReq *req; char *pBuf; unsigned int rec_size; int fpConvert; int fpFormat; /* * Lock around the critical section, for multithreading. */ LockDisplay (display); /* * Put the request in the X request buffer. */ rec_size = GetPickRecordSize (pick_device_type); PEXGetReqExtra (BeginPickAll, (4 + rec_size), pBuf); BEGIN_REQUEST_HEADER (BeginPickAll, pBuf, req); CHECK_FP (fpConvert, fpFormat); PEXStoreFPReqExtraHead (BeginPickAll, fpFormat, (4 + rec_size), req); req->method = method; req->rdr = renderer; req->drawable = drawable; req->sid = structure_id; req->sendEvent = send_event; req->pickMaxHits = max_hits; END_REQUEST_HEADER (BeginPickAll, pBuf, req); STORE_INT16 (pick_device_type, pBuf); pBuf += 2; /* pad */ STORE_PICK_RECORD (pick_device_type, rec_size, pick_record, pBuf, fpConvert, fpFormat); /* * Done, so unlock and check for synchronous-ness. */ UnlockDisplay (display); PEXSyncHandle (display); } PEXPickPath * PEXEndPickAll (display, renderer, status_return, more_return, count_return) INPUT Display *display; INPUT PEXRenderer renderer; OUTPUT int *status_return; OUTPUT int *more_return; OUTPUT unsigned long *count_return; { register pexEndPickAllReq *req; char *pBuf, *pBufSave; pexEndPickAllReply rep; PEXPickPath *pPath; PEXPickPath *pPathRet; PEXPickElementRef *pElemRef; int numElements, i; unsigned int total_size; /* * Lock around the critical section, for multithreading. */ LockDisplay (display); /* * Put the request in the X request buffer and get a reply. */ PEXGetReq (EndPickAll, pBuf); BEGIN_REQUEST_HEADER (EndPickAll, pBuf, req); PEXStoreReqHead (EndPickAll, req); req->rdr = renderer; END_REQUEST_HEADER (EndPickAll, pBuf, req); if (_XReply (display, (xReply *)&rep, 0, xFalse) == 0) { UnlockDisplay (display); PEXSyncHandle (display); *count_return = 0; return (NULL); /* return an error */ } *status_return = rep.pickStatus; *more_return = rep.morePicks; *count_return = rep.numPicked; /* * Read the reply data into a scratch buffer. */ XREAD_INTO_SCRATCH (display, pBufSave, rep.length << 2); pBuf = pBufSave; /* * Allocate a buffer for the replies to pass back to the client. * If possible, use the pick path cache. */ total_size = rep.numPicked * sizeof (PEXPickPath); for (i = 0; i < rep.numPicked; i++) { EXTRACT_CARD32 (pBuf, numElements); total_size += (numElements * sizeof (PEXPickElementRef)); pBuf += (numElements * SIZEOF (pexPickElementRef)); } if (!PEXPickCacheInUse && total_size <= PEXPickCacheSize) { pPathRet = PEXPickCache; PEXPickCacheInUse = 1; } else pPathRet = (PEXPickPath *) Xmalloc (total_size); pPath = pPathRet; pBuf = pBufSave; pElemRef = (PEXPickElementRef *) ((char *) pPath + rep.numPicked * sizeof (PEXPickPath)); for (i = 0; i < rep.numPicked; i++) { EXTRACT_CARD32 (pBuf, numElements); EXTRACT_LISTOF_PICKELEMREF (numElements, pBuf, pElemRef); pPath->count = numElements; pPath->elements = pElemRef; pPath++; pElemRef += numElements; } FINISH_WITH_SCRATCH (display, pBufSave, rep.length << 2); /* * Done, so unlock and check for synchronous-ness. */ UnlockDisplay (display); PEXSyncHandle (display); return (pPathRet); } PEXPickPath * PEXPickAll (display, drawable, renderer, method, max_hits, pick_device_type, pick_record, status_return, more_return, count_return) INPUT Display *display; INPUT Drawable drawable; INPUT PEXRenderer renderer; INPUT int method; INPUT int max_hits; INPUT int pick_device_type; INPUT PEXPickRecord *pick_record; OUTPUT int *status_return; OUTPUT int *more_return; OUTPUT unsigned long *count_return; { register pexPickAllReq *req; char *pBuf, *pBufSave; pexPickAllReply rep; PEXPickPath *pPath; PEXPickPath *pPathRet; PEXPickElementRef *pElemRef; int numElements, i; unsigned int rec_size; unsigned int total_size; int fpConvert; int fpFormat; /* * Lock around the critical section, for multithreading. */ LockDisplay (display); /* * Put the request in the X request buffer and get a reply. */ rec_size = GetPickRecordSize (pick_device_type); PEXGetReqExtra (PickAll, (4 + rec_size), pBuf); BEGIN_REQUEST_HEADER (PickAll, pBuf, req); CHECK_FP (fpConvert, fpFormat); PEXStoreFPReqExtraHead (PickAll, fpFormat, (4 + rec_size), req); req->method = method; req->rdr = renderer; req->drawable = drawable; req->pickMaxHits = max_hits; END_REQUEST_HEADER (PickAll, pBuf, req); STORE_INT16 (pick_device_type, pBuf); pBuf += 2; /* pad */ STORE_PICK_RECORD (pick_device_type, rec_size, pick_record, pBuf, fpConvert, fpFormat); if (_XReply (display, (xReply *)&rep, 0, xFalse) == 0) { UnlockDisplay (display); PEXSyncHandle (display); *count_return = 0; return (NULL); /* return an error */ } *status_return = rep.pickStatus; *more_return = rep.morePicks; *count_return = rep.numPicked; /* * Read the reply data into a scratch buffer. */ XREAD_INTO_SCRATCH (display, pBufSave, rep.length << 2); pBuf = pBufSave; /* * Allocate a buffer for the replies to pass back to the client. * If possible, use the pick path cache. */ total_size = rep.numPicked * sizeof (PEXPickPath); for (i = 0; i < rep.numPicked; i++) { EXTRACT_CARD32 (pBuf, numElements); total_size += (numElements * sizeof (PEXPickElementRef)); pBuf += (numElements * SIZEOF (pexPickElementRef)); } if (!PEXPickCacheInUse && total_size <= PEXPickCacheSize) { pPathRet = PEXPickCache; PEXPickCacheInUse = 1; } else pPathRet = (PEXPickPath *) Xmalloc (total_size); pPath = pPathRet; pBuf = pBufSave; pElemRef = (PEXPickElementRef *) ((char *) pPath + rep.numPicked * sizeof (PEXPickPath)); for (i = 0; i < rep.numPicked; i++) { EXTRACT_CARD32 (pBuf, numElements); EXTRACT_LISTOF_PICKELEMREF (numElements, pBuf, pElemRef); pPath->count = numElements; pPath->elements = pElemRef; pPath++; pElemRef += numElements; } FINISH_WITH_SCRATCH (display, pBufSave, rep.length << 2); /* * Done, so unlock and check for synchronous-ness. */ UnlockDisplay (display); PEXSyncHandle (display); return (pPathRet); }