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Diffstat (limited to 'libXt/src/Object.c')
| -rw-r--r-- | libXt/src/Object.c | 296 |
1 files changed, 296 insertions, 0 deletions
diff --git a/libXt/src/Object.c b/libXt/src/Object.c new file mode 100644 index 000000000..777fd68ae --- /dev/null +++ b/libXt/src/Object.c @@ -0,0 +1,296 @@ +/* $Xorg: Object.c,v 1.4 2001/02/09 02:03:56 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. + +******************************************************************/ + +/* + +Copyright 1987, 1988, 1994, 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. + +*/ +/* $XFree86: xc/lib/Xt/Object.c,v 1.5 2001/01/17 19:43:06 dawes Exp $ */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include "IntrinsicI.h" +#include "StringDefs.h" + +static XtResource resources[] = { + {XtNdestroyCallback, XtCCallback, XtRCallback,sizeof(XtPointer), + XtOffsetOf(ObjectRec,object.destroy_callbacks), + XtRCallback, (XtPointer)NULL} + }; + +static void ObjectClassPartInitialize(WidgetClass); +static Boolean ObjectSetValues(Widget, Widget, Widget, ArgList, Cardinal *); +static void ObjectDestroy(Widget); + +externaldef(objectclassrec) ObjectClassRec objectClassRec = { + { + /* superclass */ NULL, + /* class_name */ "Object", + /* widget_size */ sizeof(ObjectRec), + /* class_initialize */ NULL, + /* class_part_initialize*/ ObjectClassPartInitialize, + /* class_inited */ FALSE, + /* initialize */ NULL, + /* initialize_hook */ NULL, + /* pad */ NULL, + /* pad */ NULL, + /* pad */ 0, + /* resources */ resources, + /* num_resources */ XtNumber(resources), + /* xrm_class */ NULLQUARK, + /* pad */ FALSE, + /* pad */ FALSE, + /* pad */ FALSE, + /* pad */ FALSE, + /* destroy */ ObjectDestroy, + /* pad */ NULL, + /* pad */ NULL, + /* set_values */ ObjectSetValues, + /* set_values_hook */ NULL, + /* pad */ NULL, + /* get_values_hook */ NULL, + /* pad */ NULL, + /* version */ XtVersion, + /* callback_offsets */ NULL, + /* pad */ NULL, + /* pad */ NULL, + /* pad */ NULL, + /* extension */ NULL +} +}; + +externaldef(objectClass) WidgetClass objectClass + = (WidgetClass)&objectClassRec; + +/* + * Start of object routines. + */ + + +static void ConstructCallbackOffsets( + WidgetClass widgetClass) +{ + static XrmQuark QCallback = NULLQUARK; + register int i; + register int tableSize; + register CallbackTable newTable; + register CallbackTable superTable; + register XrmResourceList resourceList; + ObjectClass objectClass = (ObjectClass)widgetClass; + + /* + This function builds an array of pointers to the resource + structures which describe the callbacks for this widget class. + This array is special in that the 0th entry is the number of + callback pointers. + */ + + if (QCallback == NULLQUARK) + QCallback = XrmPermStringToQuark(XtRCallback); + + if (objectClass->object_class.superclass != NULL) { + superTable = (CallbackTable) + ((ObjectClass) objectClass->object_class.superclass)-> + object_class.callback_private; + tableSize = (int)(long) superTable[0]; + } else { + superTable = (CallbackTable) NULL; + tableSize = 0; + } + + /* Count the number of callbacks */ + resourceList = (XrmResourceList) objectClass->object_class.resources; + for (i = objectClass->object_class.num_resources; --i >= 0; resourceList++) + if (resourceList->xrm_type == QCallback) + tableSize++; + + /* + * Allocate and load the table. Make sure that the new callback + * offsets occur in the table ahead of the superclass callback + * offsets so that resource overrides work. + */ + newTable = (CallbackTable) + __XtMalloc(sizeof(XrmResource *) * (tableSize + 1)); + + newTable[0] = (XrmResource *)(long) tableSize; + + if (superTable) + tableSize -= (int)(long) superTable[0]; + resourceList = (XrmResourceList) objectClass->object_class.resources; + for (i=1; tableSize > 0; resourceList++) + if (resourceList->xrm_type == QCallback) { + newTable[i++] = resourceList; + tableSize--; + } + + if (superTable) + for (tableSize = (int)(long) *superTable++; + --tableSize >= 0; superTable++) + newTable[i++] = *superTable; + + objectClass->object_class.callback_private = (XtPointer) newTable; +} + +static void InheritObjectExtensionMethods( + WidgetClass widget_class) +{ + ObjectClass oc = (ObjectClass) widget_class; + ObjectClassExtension ext, super_ext = NULL; + + ext = (ObjectClassExtension) + XtGetClassExtension(widget_class, + XtOffsetOf(ObjectClassRec, object_class.extension), + NULLQUARK, XtObjectExtensionVersion, + sizeof(ObjectClassExtensionRec)); + + if (oc->object_class.superclass) + super_ext = (ObjectClassExtension) + XtGetClassExtension(oc->object_class.superclass, + XtOffsetOf(ObjectClassRec, object_class.extension), + NULLQUARK, XtObjectExtensionVersion, + sizeof(ObjectClassExtensionRec)); + LOCK_PROCESS; + if (ext) { + if (ext->allocate == XtInheritAllocate) + ext->allocate = (super_ext ? super_ext->allocate : NULL); + if (ext->deallocate == XtInheritDeallocate) + ext->deallocate = (super_ext ? super_ext->deallocate : NULL); + } else if (super_ext) { + /* Be careful to inherit only what is appropriate */ + ext = (ObjectClassExtension) + __XtCalloc(1, sizeof(ObjectClassExtensionRec)); + ext->next_extension = oc->object_class.extension; + ext->record_type = NULLQUARK; + ext->version = XtObjectExtensionVersion; + ext->record_size = sizeof(ObjectClassExtensionRec); + ext->allocate = super_ext->allocate; + ext->deallocate = super_ext->deallocate; + oc->object_class.extension = (XtPointer) ext; + } + UNLOCK_PROCESS; +} + +static void ObjectClassPartInitialize( + register WidgetClass wc) +{ + ObjectClass oc = (ObjectClass)wc; + + oc->object_class.xrm_class = + XrmPermStringToQuark(oc->object_class.class_name); + + if (oc->object_class.resources) + _XtCompileResourceList(oc->object_class.resources, + oc->object_class.num_resources); + + ConstructCallbackOffsets(wc); + _XtResourceDependencies(wc); + InheritObjectExtensionMethods(wc); +} + + +/*ARGSUSED*/ +static Boolean ObjectSetValues( + Widget old, + Widget request, + Widget widget, + ArgList args, + Cardinal * num_args) +{ + register CallbackTable offsets; + register int i; + register InternalCallbackList *ol, *nl; + + LOCK_PROCESS; + /* Compile any callback lists into internal form */ + offsets = (CallbackTable) XtClass(widget)->core_class.callback_private; + + for (i= (int)(long) *(offsets++); --i >= 0; offsets++) { + ol = (InternalCallbackList *) + ((char *) old - (*offsets)->xrm_offset - 1); + nl = (InternalCallbackList *) + ((char *) widget - (*offsets)->xrm_offset - 1); + if (*ol != *nl) { + if (*ol != NULL) + XtFree((char *) *ol); + if (*nl != NULL) + *nl = _XtCompileCallbackList((XtCallbackList) *nl); + } + } + UNLOCK_PROCESS; + return False; +} + + +static void ObjectDestroy ( + register Widget widget) +{ + register CallbackTable offsets; + register int i; + register InternalCallbackList cl; + + /* Remove all callbacks associated with widget */ + LOCK_PROCESS; + offsets = (CallbackTable) + widget->core.widget_class->core_class.callback_private; + + for (i = (int)(long) *(offsets++); --i >= 0; offsets++) { + cl = *(InternalCallbackList *) + ((char *) widget - (*offsets)->xrm_offset - 1); + if (cl) XtFree((char *) cl); + } + UNLOCK_PROCESS; +} /* ObjectDestroy */ |