/* $Xorg: WidgetNode.c,v 1.4 2000/08/17 19:46:04 cpqbld Exp $ */ /* Copyright 1989, 1998 The Open Group All Rights Reserved. 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/Xmu/WidgetNode.c,v 1.9 2001/04/01 14:00:01 tsi Exp $ */ /* * Author: Jim Fulton, MIT X Consortium */ #include #include #include #include #include #include #include /* * Prototypes */ static char *binsearch(char*, char*, int, int, int (*__compar)(_Xconst void*, _Xconst void*)); static int compare_resource_entries(_Xconst void *a, _Xconst void *b); static XmuWidgetNode *find_resource(XmuWidgetNode*, char*, Bool); static void mark_resource_owner(XmuWidgetNode*); /* * Implementation */ static char * binsearch(char *key, char *base, int nelems, int elemsize, int compar(_Xconst void*, _Xconst void*)) /* * key - template of object to find * base - beginning of array * nelems - number of elements in array * elemsize - sizeof an element * compar - qsort-style compare function */ { int lower = 0, upper = nelems - 1; while (lower <= upper) { int middle = (lower + upper) / 2; char *p = base + middle * elemsize; int res = (*compar) (p, key); if (res < 0) { lower = middle + 1; } else if (res == 0) { return p; } else { upper = middle - 1; } } return NULL; } static int compare_resource_entries(register _Xconst void *a, register _Xconst void *b) { return strcmp (((XtResourceList)a)->resource_name, ((XtResourceList)b)->resource_name); } static XmuWidgetNode * find_resource(XmuWidgetNode *node, char *name, Bool cons) { register XmuWidgetNode *sup; XtResource res; #define reslist ((char *) (cons ? sup->constraints : sup->resources)) #define nreslist (int) (cons ? sup->nconstraints : sup->nresources) res.resource_name = name; for (sup = node->superclass; sup && (XtResourceList) binsearch ((char *) &res, reslist, nreslist, sizeof(XtResource), compare_resource_entries); node = sup, sup = sup->superclass) ; #undef reslist #undef nreslist return node; } static void mark_resource_owner(register XmuWidgetNode *node) { register Cardinal i; XtResourceList childres; childres = node->resources; for (i = 0; i < node->nresources; i++, childres++) { node->resourcewn[i] = find_resource (node, childres->resource_name, False); } childres = node->constraints; for (i = 0; i < node->nconstraints; i++, childres++) { node->constraintwn[i] = find_resource (node, childres->resource_name, True); } } /* * Public Interfaces */ void XmuWnInitializeNodes(XmuWidgetNode *nodearray, int nnodes) { int i; XmuWidgetNode *wn; /* * Assume that the node array is in alphabetic order, so we need to * search backwards to make sure that the children are listed forward. */ for (i = nnodes - 1, wn = nodearray + (nnodes - 1); i >= 0; i--, wn--) { WidgetClass superclass = XmuWnSuperclass(wn); int j; XmuWidgetNode *swn; int lablen = strlen (wn->label); int namelen = strlen (XmuWnClassname(wn)); wn->lowered_label = XtMalloc (lablen + namelen + 2); #if 0 /* XtMalloc exits if failed */ if (!wn->lowered_label) { fprintf (stderr, "%s: unable to allocate %d bytes for widget name\n", "XmuWnInitializeNodes", lablen + namelen + 2); exit (1); } #endif wn->lowered_classname = wn->lowered_label + (lablen + 1); XmuCopyISOLatin1Lowered (wn->lowered_label, wn->label); XmuCopyISOLatin1Lowered (wn->lowered_classname, XmuWnClassname(wn)); wn->superclass = NULL; wn->have_resources = False; wn->resources = NULL; wn->resourcewn = NULL; wn->nresources = 0; wn->constraints = NULL; wn->constraintwn = NULL; wn->nconstraints = 0; wn->data = (XtPointer) NULL; /* * walk up the superclass chain */ while (superclass) { for (j = 0, swn = nodearray; j < nnodes; j++, swn++) { if (superclass == XmuWnClass(swn)) { wn->superclass = swn; goto done; /* stupid C language */ } } /* * Hmm, we have a hidden superclass (such as in core in R4); just * ignore it and keep on walking */ superclass = superclass->core_class.superclass; } done: if (wn->superclass) { wn->siblings = wn->superclass->children; wn->superclass->children = wn; } } return; } void XmuWnFetchResources(XmuWidgetNode *node, Widget toplevel, XmuWidgetNode *topnode) { Widget dummy; XmuWidgetNode *wn; if (node->have_resources) return; dummy = XtCreateWidget (node->label, XmuWnClass(node), toplevel, NULL, ZERO); if (dummy) XtDestroyWidget (dummy); /* * walk up tree geting resources; since we've instantiated the widget, * we know that all of our superclasses have been initialized */ for (wn = node; wn && !wn->have_resources; wn = wn->superclass) { XtGetResourceList (XmuWnClass(wn), &wn->resources, &wn->nresources); if (wn->resources) { qsort ((char *) wn->resources, wn->nresources, sizeof(XtResource), compare_resource_entries); } wn->resourcewn = (XmuWidgetNode **) XtCalloc (wn->nresources, sizeof (XmuWidgetNode *)); if (!wn->resourcewn) { fprintf (stderr, "%s: unable to calloc %d %d byte widget node ptrs\n", "XmuWnFetchResources",wn->nresources, sizeof (XmuWidgetNode *)); exit (1); } XtGetConstraintResourceList (XmuWnClass(wn), &wn->constraints, &wn->nconstraints); if (wn->constraints) { qsort ((char *) wn->constraints, wn->nconstraints, sizeof(XtResource), compare_resource_entries); } wn->constraintwn = (XmuWidgetNode **) XtCalloc (wn->nconstraints, sizeof (XmuWidgetNode *)); if (!wn->constraintwn) { fprintf (stderr, "%s: unable to calloc %d %d byte widget node ptrs\n", "XmuWnFetchResources", wn->nconstraints, sizeof (XmuWidgetNode *)); exit (1); } wn->have_resources = True; if (wn == topnode) break; } /* * Walk up tree removing all resources that appear in superclass; we can * mash the resource list in place since it was copied out of widget. */ for (wn = node; wn; wn = wn->superclass) { mark_resource_owner (wn); if (wn == topnode) break; } return; } int XmuWnCountOwnedResources(XmuWidgetNode *node, XmuWidgetNode *ownernode, Bool cons) { register int i; XmuWidgetNode **wn = (cons ? node->constraintwn : node->resourcewn); int nmatches = 0; for (i = (cons ? node->nconstraints : node->nresources); i > 0; i--, wn++) if (*wn == ownernode) nmatches++; return nmatches; } XmuWidgetNode * XmuWnNameToNode(XmuWidgetNode *nodelist, int nnodes, _Xconst char *name) { int i; XmuWidgetNode *wn; char tmp[1024]; XmuNCopyISOLatin1Lowered(tmp, name, sizeof(tmp)); for (i = 0, wn = nodelist; i < nnodes; i++, wn++) { if (strcmp (tmp, wn->lowered_label) == 0 || strcmp (tmp, wn->lowered_classname) == 0) { return wn; } } return NULL; }