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Diffstat (limited to 'libXt/src/Convert.c')
| -rw-r--r-- | libXt/src/Convert.c | 1087 |
1 files changed, 1087 insertions, 0 deletions
diff --git a/libXt/src/Convert.c b/libXt/src/Convert.c new file mode 100644 index 000000000..c3bb3c63a --- /dev/null +++ b/libXt/src/Convert.c @@ -0,0 +1,1087 @@ +/* $Xorg: Convert.c,v 1.5 2001/02/09 02:03:54 xorgcvs Exp $ */ + +/*********************************************************** +Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts +Copyright 1993 by Sun Microsystems, Inc. Mountain View, CA. + + 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 names of Digital or Sun not be +used in advertising or publicity pertaining to distribution of the +software without specific, written prior permission. + +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. + +SUN DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, +INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FIT- +NESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SUN BE LI- +ABLE 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. + +******************************************************************/ +/* $XFree86: xc/lib/Xt/Convert.c,v 3.7 2001/12/14 19:56:09 dawes Exp $ */ + +/* + +Copyright 1987, 1988, 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. + +*/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include "IntrinsicI.h" +#include "StringDefs.h" +#include "Intrinsic.h" + +/* Conversion procedure hash table */ + +#define CONVERTHASHSIZE ((unsigned)256) +#define CONVERTHASHMASK 255 +#define ProcHash(from_type, to_type) (2 * (from_type) + to_type) + +typedef struct _ConverterRec *ConverterPtr; +typedef struct _ConverterRec { + ConverterPtr next; + XrmRepresentation from, to; + XtTypeConverter converter; + XtDestructor destructor; + unsigned short num_args; + unsigned int do_ref_count:1; + unsigned int new_style:1; + unsigned int global:1; + char cache_type; +} ConverterRec; + +#define ConvertArgs(p) ((XtConvertArgList)((p)+1)) + +/* used for old-style type converter cache only */ +static Heap globalHeap = {NULL, NULL, 0}; + +void _XtSetDefaultConverterTable( + ConverterTable *table) +{ + register ConverterTable globalConverterTable; + + LOCK_PROCESS; + globalConverterTable = _XtGetProcessContext()->globalConverterTable; + + *table = (ConverterTable) + __XtCalloc(CONVERTHASHSIZE, (unsigned)sizeof(ConverterPtr)); + _XtAddDefaultConverters(*table); + + if (globalConverterTable) { + ConverterPtr rec; + int i; + XtCacheType cache_type; + for (i = CONVERTHASHSIZE; --i >= 0; ) { + for (rec = *globalConverterTable++; rec; rec = rec->next) { + cache_type = rec->cache_type; + if (rec->do_ref_count) + cache_type |= XtCacheRefCount; + _XtTableAddConverter(*table, rec->from, rec->to, rec->converter, + ConvertArgs(rec), rec->num_args, + rec->new_style, cache_type, + rec->destructor, True); + } + } + } + UNLOCK_PROCESS; +} + +void _XtFreeConverterTable( + ConverterTable table) +{ + register Cardinal i; + register ConverterPtr p; + + for (i = 0; i < CONVERTHASHSIZE; i++) { + for (p = table[i]; p; ) { + register ConverterPtr next = p->next; + XtFree((char*)p); + p = next; + } + } + XtFree((char*)table); +} + +/* Data cache hash table */ + +typedef struct _CacheRec *CachePtr; + +typedef struct _CacheRec { + CachePtr next; + XtPointer tag; + int hash; + XtTypeConverter converter; + unsigned short num_args; + unsigned int conversion_succeeded:1; + unsigned int has_ext:1; + unsigned int is_refcounted:1; + unsigned int must_be_freed:1; + unsigned int from_is_value:1; + unsigned int to_is_value:1; + XrmValue from; + XrmValue to; +} CacheRec; + +typedef struct _CacheRecExt { + CachePtr *prev; + XtDestructor destructor; + XtPointer closure; + long ref_count; +} CacheRecExt; + +#define CEXT(p) ((CacheRecExt *)((p)+1)) +#define CARGS(p) ((p)->has_ext ? (XrmValue *)(CEXT(p)+1) : (XrmValue *)((p)+1)) + +#define CACHEHASHSIZE 256 +#define CACHEHASHMASK 255 +typedef CachePtr CacheHashTable[CACHEHASHSIZE]; + +static CacheHashTable cacheHashTable; + +void _XtTableAddConverter( + ConverterTable table, + XrmRepresentation from_type, + XrmRepresentation to_type, + XtTypeConverter converter, + XtConvertArgList convert_args, + Cardinal num_args, + _XtBoolean new_style, + XtCacheType cache_type, + XtDestructor destructor, + _XtBoolean global) +{ + register ConverterPtr *pp; + register ConverterPtr p; + XtConvertArgList args; + + pp= &table[ProcHash(from_type, to_type) & CONVERTHASHMASK]; + while ((p = *pp) && (p->from != from_type || p->to != to_type)) + pp = &p->next; + + if (p) { + *pp = p->next; + XtFree((char *)p); + } + + p = (ConverterPtr) __XtMalloc(sizeof(ConverterRec) + + sizeof(XtConvertArgRec) * num_args); + p->next = *pp; + *pp = p; + p->from = from_type; + p->to = to_type; + p->converter = converter; + p->destructor = destructor; + p->num_args = num_args; + p->global = global; + args = ConvertArgs(p); + while (num_args--) + *args++ = *convert_args++; + p->new_style = new_style; + p->do_ref_count = False; + if (destructor || (cache_type & 0xff)) { + p->cache_type = cache_type & 0xff; + if (cache_type & XtCacheRefCount) + p->do_ref_count = True; + } else { + p->cache_type = XtCacheNone; + } +} + +void XtSetTypeConverter( + register _Xconst char* from_type, + register _Xconst char* to_type, + XtTypeConverter converter, + XtConvertArgList convert_args, + Cardinal num_args, + XtCacheType cache_type, + XtDestructor destructor + ) +{ + ProcessContext process; + XtAppContext app; + XrmRepresentation from; + XrmRepresentation to; + + LOCK_PROCESS; + process = _XtGetProcessContext(); + app = process->appContextList; + from = XrmStringToRepresentation(from_type); + to = XrmStringToRepresentation(to_type); + + if (!process->globalConverterTable) { + process->globalConverterTable = (ConverterTable) + __XtCalloc(CONVERTHASHSIZE, (unsigned)sizeof(ConverterPtr)); + } + _XtTableAddConverter(process->globalConverterTable, from, to, + converter, convert_args, + num_args, True, cache_type, destructor, True); + while (app) { + _XtTableAddConverter(app->converterTable, from, to, + converter, convert_args, + num_args, True, cache_type, destructor, True); + app = app->next; + } + UNLOCK_PROCESS; +} + +void XtAppSetTypeConverter( + XtAppContext app, + register _Xconst char* from_type, + register _Xconst char* to_type, + XtTypeConverter converter, + XtConvertArgList convert_args, + Cardinal num_args, + XtCacheType cache_type, + XtDestructor destructor + ) +{ + LOCK_PROCESS; + _XtTableAddConverter(app->converterTable, + XrmStringToRepresentation(from_type), + XrmStringToRepresentation(to_type), + converter, convert_args, num_args, + True, cache_type, destructor, False); + UNLOCK_PROCESS; +} + +/* old interface */ +void XtAddConverter( + register _Xconst char* from_type, + register _Xconst char* to_type, + XtConverter converter, + XtConvertArgList convert_args, + Cardinal num_args + ) +{ + ProcessContext process; + XtAppContext app; + XrmRepresentation from; + XrmRepresentation to; + + LOCK_PROCESS; + process = _XtGetProcessContext(); + app = process->appContextList; + from = XrmStringToRepresentation(from_type); + to = XrmStringToRepresentation(to_type); + + if (!process->globalConverterTable) { + process->globalConverterTable = (ConverterTable) + __XtCalloc(CONVERTHASHSIZE, (unsigned)sizeof(ConverterPtr)); + } + _XtTableAddConverter(process->globalConverterTable, from, to, + (XtTypeConverter)converter, convert_args, num_args, + False, XtCacheAll, (XtDestructor)NULL, True); + while (app) { + _XtTableAddConverter(app->converterTable, from, to, + (XtTypeConverter)converter, convert_args, + num_args, False, XtCacheAll, (XtDestructor)NULL, + True); + app = app->next; + } + UNLOCK_PROCESS; +} + +/* old interface */ +void XtAppAddConverter( + XtAppContext app, + register _Xconst char* from_type, + register _Xconst char* to_type, + XtConverter converter, + XtConvertArgList convert_args, + Cardinal num_args + ) +{ + LOCK_PROCESS; + _XtTableAddConverter(app->converterTable, + XrmStringToRepresentation(from_type), + XrmStringToRepresentation(to_type), + (XtTypeConverter)converter, convert_args, num_args, + False, XtCacheAll, (XtDestructor)NULL, False); + UNLOCK_PROCESS; +} + +static CachePtr +CacheEnter( + Heap* heap, + register XtTypeConverter converter, + register XrmValuePtr args, + Cardinal num_args, + XrmValuePtr from, + XrmValuePtr to, + Boolean succeeded, + register int hash, + Boolean do_ref, + Boolean do_free, + XtDestructor destructor, + XtPointer closure) +{ + register CachePtr *pHashEntry; + register CachePtr p; + register Cardinal i; + + LOCK_PROCESS; + pHashEntry = &cacheHashTable[hash & CACHEHASHMASK]; + + if ((succeeded && destructor) || do_ref) { + p = (CachePtr) _XtHeapAlloc(heap, (sizeof(CacheRec) + + sizeof(CacheRecExt) + + num_args * sizeof(XrmValue))); + CEXT(p)->prev = pHashEntry; + CEXT(p)->destructor = succeeded ? destructor : NULL; + CEXT(p)->closure = closure; + CEXT(p)->ref_count = 1; + p->has_ext = True; + } + else { + p = (CachePtr)_XtHeapAlloc(heap, (sizeof(CacheRec) + + num_args * sizeof(XrmValue))); + p->has_ext = False; + } + if (!to->addr) + succeeded = False; + p->conversion_succeeded = succeeded; + p->is_refcounted = do_ref; + p->must_be_freed = do_free; + p->next = *pHashEntry; + if (p->next && p->next->has_ext) + CEXT(p->next)->prev = &p->next; + + *pHashEntry = p; + p->tag = (XtPointer)heap; + p->hash = hash; + p->converter = converter; + p->from.size = from->size; + if (from->size <= sizeof(p->from.addr)) { + p->from_is_value = True; + XtMemmove(&p->from.addr, from->addr, from->size); + } else { + p->from_is_value = False; + p->from.addr = (XPointer)_XtHeapAlloc(heap, from->size); + (void) memmove((char *)p->from.addr, (char *)from->addr, from->size); + } + p->num_args = num_args; + if (num_args) { + XrmValue *pargs = CARGS(p); + for (i = 0; i < num_args; i++) { + pargs[i].size = args[i].size; + pargs[i].addr = (XPointer)_XtHeapAlloc(heap, args[i].size); + XtMemmove(pargs[i].addr, args[i].addr, args[i].size); + } + } + p->to.size = to->size; + if (!succeeded) { + p->to_is_value = False; + p->to.addr = NULL; + } else if (to->size <= sizeof(p->to.addr)) { + p->to_is_value = True; + XtMemmove(&p->to.addr, to->addr, to->size); + } else { + p->to_is_value = False; + p->to.addr = (XPointer)_XtHeapAlloc(heap, to->size); + (void) memmove((char *)p->to.addr, (char *)to->addr, to->size); + } + UNLOCK_PROCESS; + return p; +} + +static void FreeCacheRec( + XtAppContext app, + CachePtr p, + CachePtr *prev) +{ + LOCK_PROCESS; + if (p->has_ext) { + if (CEXT(p)->destructor) { + Cardinal num_args = p->num_args; + XrmValue *args = NULL; + XrmValue toc; + if (num_args) + args = CARGS(p); + toc.size = p->to.size; + if (p->to_is_value) + toc.addr = (XPointer)&p->to.addr; + else + toc.addr = p->to.addr; + (*CEXT(p)->destructor) (app, &toc, CEXT(p)->closure, args, + &num_args); + } + *(CEXT(p)->prev) = p->next; + if (p->next && p->next->has_ext) + CEXT(p->next)->prev = CEXT(p)->prev; + } else { + *prev = p->next; + if (p->next && p->next->has_ext) + CEXT(p->next)->prev = prev; + } + if (p->must_be_freed) { + register int i; + if (!p->from_is_value) + XtFree(p->from.addr); + if ((i = p->num_args)) { + XrmValue *pargs = CARGS(p); + while (i--) + XtFree(pargs[i].addr); + } + if (!p->to_is_value) + XtFree(p->to.addr); + XtFree((char*)p); + } + /* else on private heap; will free entire heap later */ + UNLOCK_PROCESS; +} + + +void _XtCacheFlushTag( + XtAppContext app, + XtPointer tag) +{ + int i; + register CachePtr *prev; + register CachePtr rec; + + LOCK_PROCESS; + for (i = CACHEHASHSIZE; --i >= 0;) { + prev = &cacheHashTable[i]; + while ((rec = *prev)) { + if (rec->tag == tag) + FreeCacheRec(app, rec, prev); + else + prev = &rec->next; + } + } + UNLOCK_PROCESS; +} + +#ifdef DEBUG +#include <stdio.h> + +void _XtConverterCacheStats(void) +{ + register Cardinal i; + register CachePtr p; + register Cardinal entries; + + LOCK_PROCESS; + for (i = 0; i < CACHEHASHSIZE; i++) { + p = cacheHashTable[i]; + if (p) { + for (entries = 0; p; p = p->next) { + entries++; + } + (void) fprintf(stdout, "Index: %4d Entries: %d\n", i, entries); + for (p = cacheHashTable[i]; p; p = p->next) { + (void) fprintf(stdout, " Size: %3d Refs: %3d '", + p->from.size, + p->has_ext ? CEXT(p)->ref_count : 0); + (void) fprintf(stdout, "'\n"); + } + (void) fprintf(stdout, "\n"); + } + } + UNLOCK_PROCESS; +} +#endif /*DEBUG*/ + +static Boolean ResourceQuarkToOffset( + WidgetClass widget_class, + XrmName name, + Cardinal *offset) +{ + register WidgetClass wc; + register Cardinal i; + register XrmResourceList res, *resources; + + for (wc = widget_class; wc; wc = wc->core_class.superclass) { + resources = (XrmResourceList*) wc->core_class.resources; + for (i = 0; i < wc->core_class.num_resources; i++, resources++) { + res = *resources; + if (res->xrm_name == name) { + *offset = -res->xrm_offset - 1; + return True; + } + } /* for i in resources */ + } /* for wc in widget classes */ + (*offset) = 0; + return False; +} + + +static void ComputeArgs( + Widget widget, + XtConvertArgList convert_args, + Cardinal num_args, + XrmValuePtr args) +{ + register Cardinal i; + Cardinal offset; + String params[1]; + Cardinal num_params = 1; + Widget ancestor = NULL; + + for (i = 0; i < num_args; i++) { + args[i].size = convert_args[i].size; + switch (convert_args[i].address_mode) { + case XtAddress: + args[i].addr = convert_args[i].address_id; + break; + + case XtBaseOffset: + args[i].addr = + (XPointer)((char *)widget + (long)convert_args[i].address_id); + break; + + case XtWidgetBaseOffset: + if (!ancestor) { + if (XtIsWidget(widget)) + ancestor = widget; + else + ancestor = _XtWindowedAncestor(widget); + } + + args[i].addr = + (XPointer)((char *)ancestor + (long)convert_args[i].address_id); + break; + + case XtImmediate: + args[i].addr = (XPointer) &(convert_args[i].address_id); + break; + + case XtProcedureArg: + (*(XtConvertArgProc)convert_args[i].address_id) + (widget, &convert_args[i].size, &args[i]); + break; + + case XtResourceString: + /* Convert in place for next usage */ + convert_args[i].address_mode = XtResourceQuark; + convert_args[i].address_id = + (XtPointer)(long)XrmStringToQuark((String)convert_args[i].address_id); + /* Fall through */ + + case XtResourceQuark: + if (! ResourceQuarkToOffset(widget->core.widget_class, + (XrmQuark)(long) convert_args[i].address_id, &offset)) { + params[0]= + XrmQuarkToString((XrmQuark)(long) convert_args[i].address_id); + XtAppWarningMsg(XtWidgetToApplicationContext(widget), + "invalidResourceName","computeArgs",XtCXtToolkitError, + "Cannot find resource name %s as argument to conversion", + params,&num_params); + offset = 0; + } + args[i].addr = (XPointer)((char *)widget + offset); + break; + default: + params[0] = XtName(widget); + XtAppWarningMsg(XtWidgetToApplicationContext(widget), + "invalidAddressMode", "computeArgs", XtCXtToolkitError, + "Conversion arguments for widget '%s' contain an unsupported address mode", + params,&num_params); + args[i].addr = NULL; + args[i].size = 0; + } /* switch */ + } /* for */ +} /* ComputeArgs */ + +void XtDirectConvert( + XtConverter converter, + XrmValuePtr args, + Cardinal num_args, + register XrmValuePtr from, + XrmValuePtr to) +{ + register CachePtr p; + register int hash; + register Cardinal i; + + LOCK_PROCESS; + /* Try to find cache entry for conversion */ + hash = ((long) converter >> 2) + from->size + *((char *) from->addr); + if (from->size > 1) hash += ((char *) from->addr)[1]; + + for (p = cacheHashTable[hash & CACHEHASHMASK]; p; p = p->next) { + if ((p->hash == hash) + && (p->converter == (XtTypeConverter)converter) + && (p->from.size == from->size) + && !(p->from_is_value ? + XtMemcmp(&p->from.addr, from->addr, from->size) : + memcmp((char *)p->from.addr, (char *)from->addr, from->size)) + && (p->num_args == num_args)) { + if ((i = num_args)) { + XrmValue *pargs = CARGS(p); + /* Are all args the same data ? */ + while (i) { + i--; /* do not move to while test, broken compilers */ + if (pargs[i].size != args[i].size || + XtMemcmp(pargs[i].addr, args[i].addr, args[i].size)) { + i++; + break; + } + } + } + if (!i) { + /* Perfect match */ + to->size = p->to.size; + if (p->to_is_value) + to->addr = (XPointer)&p->to.addr; + else + to->addr = p->to.addr; + UNLOCK_PROCESS; + return; + } + } + } + + /* Didn't find it, call converter procedure and entry result in cache */ + (*to).size = 0; + (*to).addr = NULL; + (*converter)(args, &num_args, from, to); + /* This memory can never be freed since we don't know the Display + * or app context from which to compute the persistance */ + { + CacheEnter(&globalHeap, (XtTypeConverter)converter, args, num_args, + from, to, (to->addr != NULL), hash, False, False, + (XtDestructor)NULL, NULL); + } + UNLOCK_PROCESS; +} + + +static ConverterPtr GetConverterEntry( + XtAppContext app, + XtTypeConverter converter) +{ + Cardinal entry; + register ConverterPtr cP; + ConverterTable converterTable; + + LOCK_PROCESS; + converterTable = app->converterTable; + cP = NULL; + for (entry = 0; (entry < CONVERTHASHSIZE) && !cP; entry++) { + cP = converterTable[entry]; + while (cP && (cP->converter != converter)) cP = cP->next; + } + UNLOCK_PROCESS; + return cP; +} + + +static Boolean +CallConverter( + Display* dpy, + XtTypeConverter converter, + XrmValuePtr args, + Cardinal num_args, + register XrmValuePtr from, + XrmValuePtr to, + XtCacheRef *cache_ref_return, + register ConverterPtr cP) +{ + CachePtr p; + int hash; + Cardinal i; + Boolean retval; + + if (!cP || ((cP->cache_type == XtCacheNone) && !cP->destructor)) { + XtPointer closure; + if (cache_ref_return) *cache_ref_return = NULL; + retval = (*(XtTypeConverter)converter) + (dpy, args, &num_args, from, to, &closure); + return retval; + } + + LOCK_PROCESS; + /* Try to find cache entry for conversion */ + hash = ((long)(converter) >> 2) + from->size + *((char *) from->addr); + if (from->size > 1) hash += ((char *) from->addr)[1]; + + if (cP->cache_type != XtCacheNone) { + for (p = cacheHashTable[hash & CACHEHASHMASK]; p; p = p->next){ + if ((p->hash == hash) + && (p->converter == converter) + && (p->from.size == from->size) + && !(p->from_is_value ? + XtMemcmp(&p->from.addr, from->addr, from->size) : + memcmp((char *)p->from.addr, (char *)from->addr, from->size)) + && (p->num_args == num_args)) { + if ((i = num_args)) { + XrmValue *pargs = CARGS(p); + /* Are all args the same data ? */ + while (i) { + i--; /* do not move to while test, broken compilers */ + if (pargs[i].size != args[i].size || + XtMemcmp(pargs[i].addr, args[i].addr, args[i].size)){ + i++; + break; + } + } + } + if (!i) { + /* Perfect match */ + if (p->conversion_succeeded) { + if (to->addr) { /* new-style call */ + if (to->size < p->to.size) { + to->size = p->to.size; + UNLOCK_PROCESS; + return False; + } + to->size = p->to.size; + if (p->to_is_value) { + XtMemmove(to->addr, &p->to.addr, + to->size); + } else { + (void) memmove((char *)to->addr, + (char *)p->to.addr, to->size); + } + } else { /* old-style call */ + to->size = p->to.size; + if (p->to_is_value) + to->addr = (XPointer)&p->to.addr; + else + to->addr = p->to.addr; + } + } + if (p->is_refcounted) { + CEXT(p)->ref_count++; + if (cache_ref_return) + *cache_ref_return = (XtCacheRef)p; + else + p->is_refcounted = False; + } + else { + if (cache_ref_return) + *cache_ref_return = NULL; + } + retval = (p->conversion_succeeded); + UNLOCK_PROCESS; + return retval; + } + } + } + } + + /* No cache entry, call converter procedure and enter result in cache */ + { + Heap *heap; + XtPointer closure = NULL; + unsigned int supplied_size = to->size; + Boolean do_ref = cP->do_ref_count && cache_ref_return; + Boolean do_free = False; + Boolean retval = + (*(XtTypeConverter)converter)(dpy, args, &num_args, from, to, &closure); + + if (retval == False && supplied_size < to->size) { + /* programmer error: caller must allocate sufficient storage */ + if (cache_ref_return) + *cache_ref_return = NULL; + UNLOCK_PROCESS; + return False; + } + + if ((cP->cache_type == XtCacheNone) || do_ref) { + heap = NULL; + do_free = True; + } + else if (cP->cache_type == XtCacheByDisplay) + heap = &_XtGetPerDisplay(dpy)->heap; + else if (cP->global) + heap = &globalHeap; + else + heap = &XtDisplayToApplicationContext(dpy)->heap; + + p = CacheEnter(heap, converter, args, num_args, from, to, retval, + hash, do_ref, do_free, cP->destructor, closure); + if (do_ref) + *cache_ref_return = (XtCacheRef)p; + else if (cache_ref_return) + *cache_ref_return = NULL; + UNLOCK_PROCESS; + return retval; + } +} + +Boolean +XtCallConverter( + Display* dpy, + XtTypeConverter converter, + XrmValuePtr args, + Cardinal num_args, + register XrmValuePtr from, + XrmValuePtr to, + XtCacheRef *cache_ref_return) +{ + ConverterPtr cP; + Boolean retval; + XtAppContext app = XtDisplayToApplicationContext(dpy); + + LOCK_APP(app); + if ((cP = GetConverterEntry(app, converter)) == NULL) { + XtAppSetTypeConverter(XtDisplayToApplicationContext(dpy), + "_XtUnk1", "_XtUnk2", + converter, NULL, 0, + XtCacheAll, NULL); + cP = GetConverterEntry(app, converter); + } + retval = CallConverter(dpy, converter, args, num_args, from, to, + cache_ref_return, cP); + UNLOCK_APP(app); + return retval; +} + +Boolean _XtConvert( + Widget widget, + register XrmRepresentation from_type, + XrmValuePtr from, + register XrmRepresentation to_type, + register XrmValuePtr to, + XtCacheRef *cache_ref_return) +{ + XtAppContext app = XtWidgetToApplicationContext(widget); + register ConverterPtr p; + Cardinal num_args; + XrmValue *args; + + /* Look for type converter */ + LOCK_PROCESS; + p = app->converterTable[ProcHash(from_type, to_type) & CONVERTHASHMASK]; + for (; p; p = p->next) { + if (from_type == p->from && to_type == p->to) { + Boolean retval = False; + /* Compute actual arguments from widget and arg descriptor */ + num_args = p->num_args; + if (num_args != 0) { + args = (XrmValue*) + ALLOCATE_LOCAL( num_args * sizeof (XrmValue) ); + if (!args) _XtAllocError("alloca"); + ComputeArgs(widget, ConvertArgs(p), num_args, args); + } else args = NULL; + if (p->new_style) { + retval = + CallConverter(XtDisplayOfObject(widget), + p->converter, args, num_args, + from, to, cache_ref_return, p); + } + else { /* is old-style (non-display) converter */ + XrmValue tempTo; + XtDirectConvert((XtConverter)p->converter, args, num_args, + from, &tempTo); + if (cache_ref_return) + *cache_ref_return = NULL; + if (tempTo.addr) { + if (to->addr) { /* new-style caller */ + if (to->size >= tempTo.size) { + if (to_type == _XtQString) + *(String*)(to->addr) = tempTo.addr; + else { + XtMemmove(to->addr, tempTo.addr, + tempTo.size); + } + retval = True; + } + to->size = tempTo.size; + } else { /* old-style caller */ + *to = tempTo; + retval = True; + } + } + } + if (args) DEALLOCATE_LOCAL( (XtPointer)args ); + UNLOCK_PROCESS; + return retval; + } + } + + { + String params[2]; + Cardinal num_params = 2; + params[0] = XrmRepresentationToString(from_type); + params[1] = XrmRepresentationToString(to_type); + XtAppWarningMsg(app, "typeConversionError", "noConverter", XtCXtToolkitError, + "No type converter registered for '%s' to '%s' conversion.", + params, &num_params); + } + UNLOCK_PROCESS; + return False; +} + +void XtConvert( + Widget widget, + _Xconst char* from_type_str, + XrmValuePtr from, + _Xconst char* to_type_str, + XrmValuePtr to) +{ + XrmQuark from_type, to_type; + WIDGET_TO_APPCON(widget); + + LOCK_APP(app); + from_type = XrmStringToRepresentation(from_type_str); + to_type = XrmStringToRepresentation(to_type_str); + if (from_type != to_type) { + /* It's not safe to ref count these resources, 'cause we + don't know what older clients may have assumed about + the resource lifetimes. + XtCacheRef ref; + */ + to->addr = NULL; + to->size = 0; + _XtConvert(widget, from_type, from, to_type, to, /*&ref*/ NULL); + /* + if (ref) { + XtAddCallback( widget, XtNdestroyCallback, + XtCallbackReleaseCacheRef, (XtPointer)ref ); + } + */ + } + else + (*to) = *from; + UNLOCK_APP(app); +} + +Boolean XtConvertAndStore( + Widget object, + _Xconst char* from_type_str, + XrmValuePtr from, + _Xconst char* to_type_str, + XrmValuePtr to) +{ + XrmQuark from_type, to_type; + WIDGET_TO_APPCON(object); + + LOCK_APP(app); + LOCK_PROCESS; + from_type = XrmStringToRepresentation(from_type_str); + to_type = XrmStringToRepresentation(to_type_str); + if (from_type != to_type) { + static XtPointer local_valueP = NULL; + static Cardinal local_valueS = 128; + XtCacheRef ref; + Boolean local = False; + do { + if (!to->addr) { + if (!local_valueP) + local_valueP = _XtHeapAlloc(&globalHeap, local_valueS); + to->addr = local_valueP; + to->size = local_valueS; + local = True; + } + if (!_XtConvert(object, from_type, from, to_type, to, &ref)) { + if (local && (to->size > local_valueS)) { + to->addr = + local_valueP = _XtHeapAlloc(&globalHeap, to->size); + local_valueS = to->size; + continue; + } else { + if (local) { + to->addr = NULL; + to->size = 0; + } + UNLOCK_PROCESS; + UNLOCK_APP(app); + return False; + } + } + if (ref) { + XtAddCallback( object, XtNdestroyCallback, + XtCallbackReleaseCacheRef, (XtPointer)ref ); + } + UNLOCK_PROCESS; + UNLOCK_APP(app); + return True; + } while (local /* && local_valueS < to->size */); + } + if (to->addr) { + if (to->size < from->size) { + to->size = from->size; + UNLOCK_PROCESS; + UNLOCK_APP(app); + return False; + } + (void) memmove(to->addr, from->addr, from->size ); + to->size = from->size; + } else /* from_type == to_type */ + *to = *from; + UNLOCK_PROCESS; + UNLOCK_APP(app); + return True; +} + +void XtAppReleaseCacheRefs( + XtAppContext app, + XtCacheRef *refs) +{ + register CachePtr *r; + register CachePtr p; + + LOCK_APP(app); + LOCK_PROCESS; + for (r = (CachePtr*)refs; (p = *r); r++) { + if (p->is_refcounted && --(CEXT(p)->ref_count) == 0) { + FreeCacheRec(app, p, NULL); + } + } + UNLOCK_PROCESS; + UNLOCK_APP(app); +} + + +/* ARGSUSED */ +void XtCallbackReleaseCacheRefList( + Widget widget, /* unused */ + XtPointer closure, + XtPointer call_data) /* unused */ +{ + XtAppReleaseCacheRefs( XtWidgetToApplicationContext(widget), + (XtCacheRef*)closure ); + XtFree(closure); +} + + +/* ARGSUSED */ +void XtCallbackReleaseCacheRef( + Widget widget, /* unused */ + XtPointer closure, + XtPointer call_data) /* unused */ +{ + XtCacheRef cache_refs[2]; + cache_refs[0] = (XtCacheRef)closure; + cache_refs[1] = NULL; + XtAppReleaseCacheRefs( XtWidgetToApplicationContext(widget), cache_refs ); +} |