1 files changed, 147 insertions, 0 deletions
diff --git a/generic/ttk/ttkTagSet.c b/generic/ttk/ttkTagSet.c
new file mode 100644
index 0000000..dd4d3a4
--- /dev/null
+++ b/generic/ttk/ttkTagSet.c
@@ -0,0 +1,147 @@
+/* $Id: ttkTagSet.c,v 1.1 2006/10/31 01:42:26 hobbs Exp $
+ *
+ * Ttk widget set: tag tables.  Half-baked, work in progress.
+ *
+ * Copyright (C) 2005, Joe English.  Freely redistributable.
+ */
+
+#include <string.h>	/* for memset() */
+#include <tcl.h>
+#include <tk.h>
+
+#include "ttkTheme.h"
+#include "ttkWidget.h"
+
+/*------------------------------------------------------------------------
+ * +++ Internal data structures.
+ */
+struct TtkTag {
+    Tcl_Obj **tagRecord;	/* ... hrmph. */
+};
+
+struct TtkTagTable {
+    Tk_OptionTable	tagOptionTable;	/* ... */
+    int         	tagRecordSize;	/* size of tag record */
+    Tcl_HashTable	tags;		/* defined tags */
+};
+
+/*------------------------------------------------------------------------
+ * +++ Tags.
+ */
+static Ttk_Tag NewTag(Ttk_TagTable tagTable)
+{
+    Ttk_Tag tag = (Ttk_Tag)ckalloc(sizeof(*tag));
+    tag->tagRecord = (Tcl_Obj **)ckalloc(tagTable->tagRecordSize);
+    memset(tag->tagRecord, 0, tagTable->tagRecordSize);
+    return tag;
+}
+
+static void DeleteTag(Ttk_Tag tag, int nOptions) 
+{
+    int i;
+    for (i = 0; i < nOptions; ++i) {
+	if (tag->tagRecord[i]) {
+	    Tcl_DecrRefCount(tag->tagRecord[i]);
+	}
+    }
+    ckfree((void*)tag->tagRecord);
+    ckfree((void*)tag);
+}
+
+Tcl_Obj **Ttk_TagRecord(Ttk_Tag tag)
+{
+    return tag->tagRecord;
+}
+
+/*------------------------------------------------------------------------
+ * +++ Tag tables.
+ */
+
+Ttk_TagTable Ttk_CreateTagTable(
+    Tk_OptionTable tagOptionTable, int tagRecordSize)
+{
+    Ttk_TagTable tagTable = (Ttk_TagTable)ckalloc(sizeof(*tagTable));
+    tagTable->tagOptionTable = tagOptionTable;
+    tagTable->tagRecordSize = tagRecordSize;
+    Tcl_InitHashTable(&tagTable->tags, TCL_STRING_KEYS);
+    return tagTable;
+}
+
+void Ttk_DeleteTagTable(Ttk_TagTable tagTable)
+{
+    Tcl_HashSearch search;
+    Tcl_HashEntry *entryPtr;
+    int nOptions = tagTable->tagRecordSize / sizeof(Tcl_Obj *);
+
+    entryPtr = Tcl_FirstHashEntry(&tagTable->tags, &search);
+    while (entryPtr != NULL) {
+	DeleteTag(Tcl_GetHashValue(entryPtr), nOptions);
+	entryPtr = Tcl_NextHashEntry(&search);
+    }
+
+    Tcl_DeleteHashTable(&tagTable->tags);
+    ckfree((void*)tagTable);
+}
+
+Ttk_Tag Ttk_GetTag(Ttk_TagTable tagTable, const char *tagName)
+{
+    int isNew = 0;
+    Tcl_HashEntry *entryPtr = Tcl_CreateHashEntry(
+	&tagTable->tags, tagName, &isNew);
+
+    if (isNew) {
+	Tcl_SetHashValue(entryPtr, NewTag(tagTable));
+    }
+    return Tcl_GetHashValue(entryPtr);
+}
+
+Ttk_Tag Ttk_GetTagFromObj(Ttk_TagTable tagTable, Tcl_Obj *objPtr)
+{
+    return Ttk_GetTag(tagTable, Tcl_GetString(objPtr));
+}
+
+/* Ttk_GetTagListFromObj --
+ * 	Extract an array of pointers to Ttk_Tags from a Tcl_Obj.
+ * 	(suitable for passing to Tk_BindEvent).
+ *
+ * Result must be passed to Ttk_FreeTagList().
+ */
+extern int Ttk_GetTagListFromObj(
+    Tcl_Interp *interp, 
+    Ttk_TagTable tagTable,
+    Tcl_Obj *objPtr,
+    int *nTags_rtn,
+    void **taglist_rtn)
+{
+    Tcl_Obj **objv;
+    int i, objc;
+    void **tags;
+
+    *taglist_rtn = NULL; *nTags_rtn = 0;
+
+    if (objPtr == NULL) {
+	return TCL_OK;
+    }
+
+    if (Tcl_ListObjGetElements(interp, objPtr, &objc, &objv) != TCL_OK) {
+    	return TCL_ERROR;
+    }
+
+    tags = (void**)ckalloc((objc+1) * sizeof(void*));
+    for (i=0; i<objc; ++i) {
+	tags[i] = Ttk_GetTagFromObj(tagTable, objv[i]);
+    }
+    tags[i] = NULL;
+
+    *taglist_rtn = tags;
+    *nTags_rtn = objc;
+
+    return TCL_OK;
+}
+
+void Ttk_FreeTagList(void **taglist)
+{
+    if (taglist) 
+	ckfree((ClientData)taglist);
+}
+