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-rw-r--r--libXmu/src/WidgetNode.c310
1 files changed, 310 insertions, 0 deletions
diff --git a/libXmu/src/WidgetNode.c b/libXmu/src/WidgetNode.c
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+/* $Xorg: WidgetNode.c,v 1.5 2001/02/09 02:03:53 xorgcvs Exp $ */
+
+/*
+
+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.
+
+*/
+
+/* $XFree86: xc/lib/Xmu/WidgetNode.c,v 1.12 2002/09/19 13:21:58 tsi Exp $ */
+
+/*
+ * Author: Jim Fulton, MIT X Consortium
+ */
+
+
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <X11/Xos.h>
+#include <X11/IntrinsicP.h>
+#include <X11/Xmu/CharSet.h>
+#include <X11/Xmu/WidgetNode.h>
+
+/*
+ * 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, 0);
+ 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 %ld byte widget node ptrs\n",
+ "XmuWnFetchResources", wn->nresources,
+ (unsigned long)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 %ld byte widget node ptrs\n",
+ "XmuWnFetchResources", wn->nconstraints,
+ (unsigned long)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;
+}
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