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-rw-r--r--generic/tkListbox.c560
1 files changed, 478 insertions, 82 deletions
diff --git a/generic/tkListbox.c b/generic/tkListbox.c
index 913757c..4b56229 100644
--- a/generic/tkListbox.c
+++ b/generic/tkListbox.c
@@ -11,13 +11,21 @@
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*
- * RCS: @(#) $Id: tkListbox.c,v 1.9 1999/11/18 02:24:41 ericm Exp $
+ * RCS: @(#) $Id: tkListbox.c,v 1.10 1999/11/19 15:48:19 ericm Exp $
*/
#include "tkPort.h"
#include "default.h"
#include "tkInt.h"
+typedef struct {
+ Tk_OptionTable listboxOptionTable; /* Table defining configuration options
+ * available for the listbox */
+ Tk_OptionTable itemAttrOptionTable; /* Table definining configuration
+ * options available for listbox
+ * items */
+} ListboxOptionTables;
+
/*
* A data structure of the following type is kept for each listbox
* widget managed by this file:
@@ -35,11 +43,15 @@ typedef struct {
Tcl_Command widgetCmd; /* Token for listbox's widget command. */
Tk_OptionTable optionTable; /* Table that defines configuration options
* available for this widget. */
+ Tk_OptionTable itemAttrOptionTable; /* Table that defines configuration
+ * options available for listbox
+ * items */
char *listVarName; /* List variable name */
Tcl_Obj *listObj; /* Pointer to the list object being used */
int nElements; /* Holds the current count of elements */
Tcl_HashTable *selection; /* Tracks selection */
-
+ Tcl_HashTable *itemAttrTable; /* Tracks item attributes */
+
/*
* Information used when displaying widget:
*/
@@ -148,6 +160,17 @@ typedef struct {
} Listbox;
/*
+ * ItemAttr structures are used to store item configuration information for
+ * the items in a listbox
+ */
+typedef struct {
+ Tk_3DBorder border; /* Used for drawing background around text */
+ Tk_3DBorder selBorder; /* Used for selected text */
+ XColor *fgColor; /* Text color in normal mode. */
+ XColor *selFgColor; /* Text color in selected mode. */
+} ItemAttr;
+
+/*
* Flag bits for listboxes:
*
* REDRAW_PENDING: Non-zero means a DoWhenIdle handler
@@ -169,9 +192,9 @@ typedef struct {
#define MAXWIDTH_IS_STALE 16
/*
- * Information used for argv parsing:
+ * The optionSpecs table defines the valid configuration options for the
+ * listbox widget
*/
-
static Tk_OptionSpec optionSpecs[] = {
{TK_OPTION_BORDER, "-background", "background", "Background",
DEF_LISTBOX_BG_COLOR, -1, Tk_Offset(Listbox, normalBorder),
@@ -208,13 +231,13 @@ static Tk_OptionSpec optionSpecs[] = {
Tk_Offset(Listbox, highlightWidth), 0, 0, 0},
{TK_OPTION_RELIEF, "-relief", "relief", "Relief",
DEF_LISTBOX_RELIEF, -1, Tk_Offset(Listbox, relief), 0, 0, 0},
- {TK_OPTION_BORDER, "-selectbackground", "selectBackground", "Foreground",
+ {TK_OPTION_BORDER, "-selectbackground", "selectBackground", "Background",
DEF_LISTBOX_SELECT_COLOR, -1, Tk_Offset(Listbox, selBorder),
0, (ClientData) DEF_LISTBOX_SELECT_MONO, 0},
{TK_OPTION_PIXELS, "-selectborderwidth", "selectBorderWidth",
"BorderWidth", DEF_LISTBOX_SELECT_BD, -1,
Tk_Offset(Listbox, selBorderWidth), 0, 0, 0},
- {TK_OPTION_COLOR, "-selectforeground", "selectForeground", "Background",
+ {TK_OPTION_COLOR, "-selectforeground", "selectForeground", "Foreground",
DEF_LISTBOX_SELECT_FG_COLOR, -1, Tk_Offset(Listbox, selFgColorPtr),
0, (ClientData) DEF_LISTBOX_SELECT_FG_MONO, 0},
{TK_OPTION_STRING, "-selectmode", "selectMode", "SelectMode",
@@ -233,7 +256,7 @@ static Tk_OptionSpec optionSpecs[] = {
{TK_OPTION_STRING, "-yscrollcommand", "yScrollCommand", "ScrollCommand",
DEF_LISTBOX_SCROLL_COMMAND, -1, Tk_Offset(Listbox, yScrollCmd),
TK_OPTION_NULL_OK, 0, 0},
- {TK_OPTION_STRING, "-listvariable", "listVariable", "ListVariable",
+ {TK_OPTION_STRING, "-listvariable", "listVariable", "Variable",
DEF_LISTBOX_LIST_VARIABLE, -1, Tk_Offset(Listbox, listVarName),
TK_OPTION_NULL_OK, 0, 0},
{TK_OPTION_END, (char *) NULL, (char *) NULL, (char *) NULL,
@@ -241,23 +264,48 @@ static Tk_OptionSpec optionSpecs[] = {
};
/*
+ * The itemAttrOptionSpecs table defines the valid configuration options for
+ * listbox items
+ */
+static Tk_OptionSpec itemAttrOptionSpecs[] = {
+ {TK_OPTION_BORDER, "-background", "background", "Background",
+ (char *)NULL, -1, Tk_Offset(ItemAttr, border),
+ TK_OPTION_NULL_OK, (ClientData) DEF_LISTBOX_BG_MONO, 0},
+ {TK_OPTION_SYNONYM, "-bg", (char *) NULL, (char *) NULL,
+ (char *) NULL, 0, -1, 0, (ClientData) "-background", 0},
+ {TK_OPTION_SYNONYM, "-fg", "foreground", (char *) NULL,
+ (char *) NULL, 0, -1, 0, (ClientData) "-foreground", 0},
+ {TK_OPTION_COLOR, "-foreground", "foreground", "Foreground",
+ (char *) NULL, -1, Tk_Offset(ItemAttr, fgColor),
+ TK_OPTION_NULL_OK, 0, 0},
+ {TK_OPTION_BORDER, "-selectbackground", "selectBackground", "Background",
+ (char *) NULL, -1, Tk_Offset(ItemAttr, selBorder),
+ TK_OPTION_NULL_OK, (ClientData) DEF_LISTBOX_SELECT_MONO, 0},
+ {TK_OPTION_COLOR, "-selectforeground", "selectForeground", "Foreground",
+ (char *) NULL, -1, Tk_Offset(ItemAttr, selFgColor),
+ TK_OPTION_NULL_OK, (ClientData) DEF_LISTBOX_SELECT_FG_MONO, 0},
+ {TK_OPTION_END, (char *) NULL, (char *) NULL, (char *) NULL,
+ (char *) NULL, 0, -1, 0, 0, 0}
+};
+
+/*
* The following tables define the listbox widget commands (and sub-
* commands) and map the indexes into the string tables into
* enumerated types used to dispatch the listbox widget command.
*/
-
static char *commandNames[] = {
"activate", "bbox", "cget", "configure", "curselection", "delete", "get",
- "index", "insert", "nearest", "scan", "see", "selection", "size", "xview",
- "yview",
+ "index", "insert", "itemcget", "itemconfigure", "nearest", "scan",
+ "see", "selection", "size", "xview", "yview",
(char *) NULL
};
enum command {
COMMAND_ACTIVATE, COMMAND_BBOX, COMMAND_CGET, COMMAND_CONFIGURE,
- COMMAND_CURSELECTION, COMMAND_DELETE, COMMAND_GET, COMMAND_INDEX,
- COMMAND_INSERT, COMMAND_NEAREST, COMMAND_SCAN, COMMAND_SEE,
- COMMAND_SELECTION, COMMAND_SIZE, COMMAND_XVIEW, COMMAND_YVIEW
+ COMMAND_CURSELECTION, COMMAND_DELETE, COMMAND_GET, COMMAND_INDEX,
+ COMMAND_INSERT, COMMAND_ITEMCGET, COMMAND_ITEMCONFIGURE,
+ COMMAND_NEAREST, COMMAND_SCAN, COMMAND_SEE, COMMAND_SELECTION,
+ COMMAND_SIZE, COMMAND_XVIEW, COMMAND_YVIEW
};
static char *selCommandNames[] = {
@@ -285,10 +333,7 @@ enum indices {
};
-/*
- * Forward declarations for procedures defined later in this file:
- */
-
+/* Declarations for procedures defined later in this file */
static void ChangeListboxOffset _ANSI_ARGS_((Listbox *listPtr,
int offset));
static void ChangeListboxView _ANSI_ARGS_((Listbox *listPtr,
@@ -296,9 +341,14 @@ static void ChangeListboxView _ANSI_ARGS_((Listbox *listPtr,
static int ConfigureListbox _ANSI_ARGS_((Tcl_Interp *interp,
Listbox *listPtr, int objc, Tcl_Obj *CONST objv[],
int flags));
+static int ConfigureListboxItem _ANSI_ARGS_ ((Tcl_Interp *interp,
+ Listbox *listPtr, ItemAttr *attrs, int objc,
+ Tcl_Obj *CONST objv[]));
static int ListboxDeleteSubCmd _ANSI_ARGS_((Listbox *listPtr,
int first, int last));
static void DestroyListbox _ANSI_ARGS_((char *memPtr));
+static void DestroyListboxOptionTables _ANSI_ARGS_ (
+ (ClientData clientData, Tcl_Interp *interp));
static void DisplayListbox _ANSI_ARGS_((ClientData clientData));
static int GetListboxIndex _ANSI_ARGS_((Tcl_Interp *interp,
Listbox *listPtr, Tcl_Obj *index, int endIsSize,
@@ -322,8 +372,10 @@ static void ListboxScanTo _ANSI_ARGS_((Listbox *listPtr,
int x, int y));
static int ListboxSelect _ANSI_ARGS_((Listbox *listPtr,
int first, int last, int select));
-static void ListboxUpdateHScrollbar _ANSI_ARGS_((Listbox *listPtr));
-static void ListboxUpdateVScrollbar _ANSI_ARGS_((Listbox *listPtr));
+static void ListboxUpdateHScrollbar _ANSI_ARGS_(
+ (Listbox *listPtr));
+static void ListboxUpdateVScrollbar _ANSI_ARGS_(
+ (Listbox *listPtr));
static int ListboxWidgetObjCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int objc,
Tcl_Obj *CONST objv[]));
@@ -338,6 +390,8 @@ static int ListboxXviewSubCmd _ANSI_ARGS_ ((Tcl_Interp *interp,
static int ListboxYviewSubCmd _ANSI_ARGS_ ((Tcl_Interp *interp,
Listbox *listPtr, int objc,
Tcl_Obj *CONST objv[]));
+static ItemAttr * ListboxGetItemAttributes _ANSI_ARGS_ (
+ (Tcl_Interp *interp, Listbox *listPtr, int index));
static void ListboxWorldChanged _ANSI_ARGS_((
ClientData instanceData));
static int NearestListboxElement _ANSI_ARGS_((Listbox *listPtr,
@@ -345,6 +399,8 @@ static int NearestListboxElement _ANSI_ARGS_((Listbox *listPtr,
static char * ListboxListVarProc _ANSI_ARGS_ ((ClientData clientData,
Tcl_Interp *interp, char *name1, char *name2,
int flags));
+static void MigrateHashEntries _ANSI_ARGS_ ((Tcl_HashTable *table,
+ int first, int last, int offset));
/*
* The structure below defines button class behavior by means of procedures
* that can be invoked from generic window code.
@@ -384,24 +440,34 @@ Tk_ListboxObjCmd(clientData, interp, objc, objv)
{
register Listbox *listPtr;
Tk_Window tkwin;
- Tk_OptionTable optionTable;
-
- optionTable = (Tk_OptionTable) clientData;
- if (optionTable == NULL) {
+ ListboxOptionTables *optionTables;
+
+ optionTables = (ListboxOptionTables *)clientData;
+ if (optionTables == NULL) {
Tcl_CmdInfo info;
char *name;
/*
- * We haven't created the option table for this widget class
- * yet. Do it now and save the table as the clientData for
- * the command, so we'll have access to it in future
- * invocations of the command.
+ * We haven't created the option tables for this widget class yet.
+ * Do it now and save the a pointer to them as the ClientData for
+ * the command, so future invocations will have access to it.
*/
-
- optionTable = Tk_CreateOptionTable(interp, optionSpecs);
+ optionTables =
+ (ListboxOptionTables *) ckalloc(sizeof(ListboxOptionTables));
+ /* Set up an exit handler to free the optionTables struct */
+ Tcl_SetAssocData(interp, "ListboxOptionTables",
+ DestroyListboxOptionTables, (ClientData) optionTables);
+
+ /* Create the listbox option table and the listbox item option table */
+ optionTables->listboxOptionTable =
+ Tk_CreateOptionTable(interp, optionSpecs);
+ optionTables->itemAttrOptionTable =
+ Tk_CreateOptionTable(interp, itemAttrOptionSpecs);
+
+ /* Store a pointer to the tables as the ClientData for the command */
name = Tcl_GetString(objv[0]);
Tcl_GetCommandInfo(interp, name, &info);
- info.objClientData = (ClientData) optionTable;
+ info.objClientData = (ClientData) optionTables;
Tcl_SetCommandInfo(interp, name, &info);
}
@@ -421,7 +487,6 @@ Tk_ListboxObjCmd(clientData, interp, objc, objv)
* by ConfigureListbox, or that ConfigureListbox requires to be
* initialized already (e.g. resource pointers).
*/
-
listPtr = (Listbox *) ckalloc(sizeof(Listbox));
listPtr->tkwin = tkwin;
listPtr->display = Tk_Display(tkwin);
@@ -429,12 +494,16 @@ Tk_ListboxObjCmd(clientData, interp, objc, objv)
listPtr->widgetCmd = Tcl_CreateObjCommand(interp,
Tk_PathName(listPtr->tkwin), ListboxWidgetObjCmd,
(ClientData) listPtr, ListboxCmdDeletedProc);
- listPtr->optionTable = optionTable;
+ listPtr->optionTable = optionTables->listboxOptionTable;
+ listPtr->itemAttrOptionTable = optionTables->itemAttrOptionTable;
listPtr->listVarName = NULL;
listPtr->listObj = NULL;
listPtr->selection =
(Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable));
Tcl_InitHashTable(listPtr->selection, TCL_ONE_WORD_KEYS);
+ listPtr->itemAttrTable =
+ (Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable));
+ Tcl_InitHashTable(listPtr->itemAttrTable, TCL_ONE_WORD_KEYS);
listPtr->nElements = 0;
listPtr->normalBorder = NULL;
listPtr->borderWidth = 0;
@@ -482,8 +551,8 @@ Tk_ListboxObjCmd(clientData, interp, objc, objv)
ListboxEventProc, (ClientData) listPtr);
Tk_CreateSelHandler(listPtr->tkwin, XA_PRIMARY, XA_STRING,
ListboxFetchSelection, (ClientData) listPtr, XA_STRING);
- if (Tk_InitOptions(interp, (char *)listPtr, optionTable,
- tkwin) != TCL_OK) {
+ if (Tk_InitOptions(interp, (char *)listPtr,
+ optionTables->listboxOptionTable, tkwin) != TCL_OK) {
Tk_DestroyWindow(listPtr->tkwin);
return TCL_ERROR;
}
@@ -566,6 +635,7 @@ ListboxWidgetObjCmd(clientData, interp, objc, objv)
result = TCL_OK;
break;
}
+
case COMMAND_BBOX: {
if (objc != 3) {
Tcl_WrongNumArgs(interp, 2, objv, "index");
@@ -580,6 +650,7 @@ ListboxWidgetObjCmd(clientData, interp, objc, objv)
result = ListboxBboxSubCmd(interp, listPtr, index);
break;
}
+
case COMMAND_CGET: {
Tcl_Obj *objPtr;
if (objc != 3) {
@@ -643,6 +714,7 @@ ListboxWidgetObjCmd(clientData, interp, objc, objv)
result = TCL_OK;
break;
}
+
case COMMAND_DELETE: {
int first, last;
if ((objc < 3) || (objc > 4)) {
@@ -679,6 +751,7 @@ ListboxWidgetObjCmd(clientData, interp, objc, objv)
}
break;
}
+
case COMMAND_GET: {
int first, last;
Tcl_Obj **elemPtrs;
@@ -723,6 +796,7 @@ ListboxWidgetObjCmd(clientData, interp, objc, objv)
result = TCL_OK;
break;
}
+
case COMMAND_INDEX:{
char buf[TCL_INTEGER_SPACE];
if (objc != 3) {
@@ -739,6 +813,7 @@ ListboxWidgetObjCmd(clientData, interp, objc, objv)
result = TCL_OK;
break;
}
+
case COMMAND_INSERT: {
if (objc < 3) {
Tcl_WrongNumArgs(interp, 2, objv,
@@ -754,6 +829,85 @@ ListboxWidgetObjCmd(clientData, interp, objc, objv)
result = ListboxInsertSubCmd(listPtr, index, objc-3, objv+3);
break;
}
+
+ case COMMAND_ITEMCGET: {
+ Tcl_Obj *objPtr;
+ ItemAttr *attrPtr;
+ if (objc != 4) {
+ Tcl_WrongNumArgs(interp, 2, objv, "index option");
+ result = TCL_ERROR;
+ break;
+ }
+
+ result = GetListboxIndex(interp, listPtr, objv[2], 0, &index);
+ if (result != TCL_OK) {
+ break;
+ }
+
+ if (index < 0 || index >= listPtr->nElements) {
+ Tcl_AppendResult(interp, "item number \"",
+ Tcl_GetString(objv[2]), "\" out of range",
+ (char *)NULL);
+ result = TCL_ERROR;
+ break;
+ }
+
+ attrPtr = ListboxGetItemAttributes(interp, listPtr, index);
+
+ objPtr = Tk_GetOptionValue(interp, (char *)attrPtr,
+ listPtr->itemAttrOptionTable, objv[3], listPtr->tkwin);
+ if (objPtr == NULL) {
+ result = TCL_ERROR;
+ break;
+ }
+ Tcl_SetObjResult(interp, objPtr);
+ result = TCL_OK;
+ break;
+ }
+
+ case COMMAND_ITEMCONFIGURE: {
+ Tcl_Obj *objPtr;
+ ItemAttr *attrPtr;
+ if (objc < 3) {
+ Tcl_WrongNumArgs(interp, 2, objv,
+ "index ?option? ?value? ?option value ...?");
+ result = TCL_ERROR;
+ break;
+ }
+
+ result = GetListboxIndex(interp, listPtr, objv[2], 0, &index);
+ if (result != TCL_OK) {
+ break;
+ }
+
+ if (index < 0 || index >= listPtr->nElements) {
+ Tcl_AppendResult(interp, "item number \"",
+ Tcl_GetString(objv[2]), "\" out of range",
+ (char *)NULL);
+ result = TCL_ERROR;
+ break;
+ }
+
+ attrPtr = ListboxGetItemAttributes(interp, listPtr, index);
+ if (objc <= 4) {
+ objPtr = Tk_GetOptionInfo(interp, (char *)attrPtr,
+ listPtr->itemAttrOptionTable,
+ (objc == 4) ? objv[3] : (Tcl_Obj *) NULL,
+ listPtr->tkwin);
+ if (objPtr == NULL) {
+ result = TCL_ERROR;
+ break;
+ } else {
+ Tcl_SetObjResult(interp, objPtr);
+ result = TCL_OK;
+ }
+ } else {
+ result = ConfigureListboxItem(interp, listPtr, attrPtr,
+ objc-3, objv+3);
+ }
+ break;
+ }
+
case COMMAND_NEAREST: {
char buf[TCL_INTEGER_SPACE];
int y;
@@ -773,6 +927,7 @@ ListboxWidgetObjCmd(clientData, interp, objc, objv)
result = TCL_OK;
break;
}
+
case COMMAND_SCAN: {
int x, y, scanCmdIndex;
@@ -809,6 +964,7 @@ ListboxWidgetObjCmd(clientData, interp, objc, objv)
result = TCL_OK;
break;
}
+
case COMMAND_SEE: {
int diff;
if (objc != 3) {
@@ -848,10 +1004,12 @@ ListboxWidgetObjCmd(clientData, interp, objc, objv)
result = TCL_OK;
break;
}
+
case COMMAND_SELECTION: {
result = ListboxSelectionSubCmd(interp, listPtr, objc, objv);
break;
}
+
case COMMAND_SIZE: {
char buf[TCL_INTEGER_SPACE];
if (objc != 2) {
@@ -864,10 +1022,12 @@ ListboxWidgetObjCmd(clientData, interp, objc, objv)
result = TCL_OK;
break;
}
+
case COMMAND_XVIEW: {
result = ListboxXviewSubCmd(interp, listPtr, objc, objv);
break;
}
+
case COMMAND_YVIEW: {
result = ListboxYviewSubCmd(interp, listPtr, objc, objv);
break;
@@ -1173,6 +1333,50 @@ ListboxYviewSubCmd(interp, listPtr, objc, objv)
/*
*----------------------------------------------------------------------
*
+ * ListboxGetItemAttributes --
+ *
+ * Returns a pointer to the ItemAttr record for a given index,
+ * creating one if it does not already exist.
+ *
+ * Results:
+ * Pointer to an ItemAttr record.
+ *
+ * Side effects:
+ * Memory may be allocated for the ItemAttr record.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static ItemAttr *
+ListboxGetItemAttributes(interp, listPtr, index)
+ Tcl_Interp *interp; /* Pointer to the calling Tcl interpreter */
+ Listbox *listPtr; /* Information about the listbox */
+ int index; /* Index of the item to retrieve attributes
+ * for */
+{
+ int new;
+ Tcl_HashEntry *entry;
+ ItemAttr *attrs;
+
+ entry = Tcl_CreateHashEntry(listPtr->itemAttrTable, (char *)index,
+ &new);
+ if (new) {
+ attrs = (ItemAttr *) ckalloc(sizeof(ItemAttr));
+ attrs->border = NULL;
+ attrs->selBorder = NULL;
+ attrs->fgColor = NULL;
+ attrs->selFgColor = NULL;
+ Tk_InitOptions(interp, (char *)attrs, listPtr->itemAttrOptionTable,
+ listPtr->tkwin);
+ Tcl_SetHashValue(entry, (ClientData) attrs);
+ }
+ attrs = (ItemAttr *)Tcl_GetHashValue(entry);
+ return attrs;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
* DestroyListbox --
*
* This procedure is invoked by Tcl_EventuallyFree or Tcl_Release
@@ -1193,14 +1397,15 @@ DestroyListbox(memPtr)
char *memPtr; /* Info about listbox widget. */
{
register Listbox *listPtr = (Listbox *) memPtr;
-
+ Tcl_HashEntry *entry;
+ Tcl_HashSearch search;
+
/* If we have an internal list object, free it */
if (listPtr->listObj != NULL) {
Tcl_DecrRefCount(listPtr->listObj);
listPtr->listObj = NULL;
}
-
if (listPtr->listVarName != NULL) {
Tcl_UntraceVar(listPtr->interp, listPtr->listVarName,
TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
@@ -1210,7 +1415,15 @@ DestroyListbox(memPtr)
/* Free the selection hash table */
Tcl_DeleteHashTable(listPtr->selection);
ckfree((char *)listPtr->selection);
-
+
+ /* Free the item attribute hash table */
+ for (entry = Tcl_FirstHashEntry(listPtr->itemAttrTable, &search);
+ entry != NULL; entry = Tcl_NextHashEntry(&search)) {
+ ckfree((char *)Tcl_GetHashValue(entry));
+ }
+ Tcl_DeleteHashTable(listPtr->itemAttrTable);
+ ckfree((char *)listPtr->itemAttrTable);
+
/*
* Free up all the stuff that requires special handling, then
* let Tk_FreeOptions handle all the standard option-related
@@ -1231,6 +1444,33 @@ DestroyListbox(memPtr)
/*
*----------------------------------------------------------------------
*
+ * DestroyListboxOptionTables --
+ *
+ * This procedure is registered as an exit callback when the listbox
+ * command is first called. It cleans up the OptionTables structure
+ * allocated by that command.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Frees memory.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+DestroyListboxOptionTables(clientData, interp)
+ ClientData clientData; /* Pointer to the OptionTables struct */
+ Tcl_Interp *interp; /* Pointer to the calling interp */
+{
+ ckfree((char *)clientData);
+ return;
+}
+
+/*
+ *----------------------------------------------------------------------
+ *
* ConfigureListbox --
*
* This procedure is called to process an objv/objc list, plus
@@ -1364,6 +1604,49 @@ ConfigureListbox(interp, listPtr, objc, objv, flags)
}
/*
+ *----------------------------------------------------------------------
+ *
+ * ConfigureListboxItem --
+ *
+ * This procedure is called to process an objv/objc list, plus
+ * the Tk option database, in order to configure (or reconfigure)
+ * a listbox item.
+ *
+ * Results:
+ * The return value is a standard Tcl result. If TCL_ERROR is
+ * returned, then the interp's result contains an error message.
+ *
+ * Side effects:
+ * Configuration information, such as colors, border width,
+ * etc. get set for a listbox item; old resources get freed,
+ * if there were any.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static int
+ConfigureListboxItem(interp, listPtr, attrs, objc, objv)
+ Tcl_Interp *interp; /* Used for error reporting. */
+ register Listbox *listPtr; /* Information about widget; may or may
+ * not already have values for some fields. */
+ ItemAttr *attrs; /* Information about the item to configure */
+ int objc; /* Number of valid entries in argv. */
+ Tcl_Obj *CONST objv[]; /* Arguments. */
+{
+ Tk_SavedOptions savedOptions;
+
+ if (Tk_SetOptions(interp, (char *)attrs,
+ listPtr->itemAttrOptionTable, objc, objv, listPtr->tkwin,
+ &savedOptions, (int *)NULL) != TCL_OK) {
+ Tk_RestoreSavedOptions(&savedOptions);
+ return TCL_ERROR;
+ }
+ Tk_FreeSavedOptions(&savedOptions);
+ ListboxWorldChanged((ClientData) listPtr);
+ return TCL_OK;
+}
+
+/*
*---------------------------------------------------------------------------
*
* ListboxWorldChanged --
@@ -1447,8 +1730,13 @@ DisplayListbox(clientData)
int i, limit, x, y, width, prevSelected;
Tk_FontMetrics fm;
Tcl_Obj *curElement;
+ Tcl_HashEntry *entry;
char *stringRep;
int stringLen;
+ ItemAttr *attrs;
+ Tk_3DBorder selectedBg;
+ XGCValues gcValues;
+ unsigned long mask;
int left, right; /* Non-zero values here indicate
* that the left or right edge of
* the listbox is off-screen. */
@@ -1486,12 +1774,7 @@ DisplayListbox(clientData)
Tk_Fill3DRectangle(tkwin, pixmap, listPtr->normalBorder, 0, 0,
Tk_Width(tkwin), Tk_Height(tkwin), 0, TK_RELIEF_FLAT);
- /*
- * Iterate through all of the elements of the listbox, displaying each
- * in turn. Selected elements use a different GC and have a raised
- * background.
- */
-
+ /* Display each item in the listbox */
limit = listPtr->topIndex + listPtr->fullLines + listPtr->partialLine - 1;
if (limit >= listPtr->nElements) {
limit = listPtr->nElements-1;
@@ -1511,10 +1794,39 @@ DisplayListbox(clientData)
y = ((i - listPtr->topIndex) * listPtr->lineHeight)
+ listPtr->inset;
gc = listPtr->textGC;
+ /*
+ * Lookup this item in the item attributes table, to see if it has
+ * special foreground/background colors
+ */
+ entry = Tcl_FindHashEntry(listPtr->itemAttrTable, (char *)i);
+
+ /* If the item is selected, it is drawn differently */
if (Tcl_FindHashEntry(listPtr->selection, (char *)i) != NULL) {
gc = listPtr->selTextGC;
width = Tk_Width(tkwin) - 2*listPtr->inset;
- Tk_Fill3DRectangle(tkwin, pixmap, listPtr->selBorder, x, y,
+ selectedBg = listPtr->selBorder;
+
+ /* If there is attribute information for this item,
+ * adjust the drawing accordingly */
+ if (entry != NULL) {
+ attrs = (ItemAttr *)Tcl_GetHashValue(entry);
+ /* The default GC has the settings from the widget at large */
+ gcValues.foreground = listPtr->selFgColorPtr->pixel;
+ gcValues.font = Tk_FontId(listPtr->tkfont);
+ gcValues.graphics_exposures = False;
+ mask = GCForeground | GCFont | GCGraphicsExposures;
+
+ if (attrs->selBorder != NULL) {
+ selectedBg = attrs->selBorder;
+ }
+
+ if (attrs->selFgColor != NULL) {
+ gcValues.foreground = attrs->selFgColor->pixel;
+ gc = Tk_GetGC(listPtr->tkwin, mask, &gcValues);
+ }
+ }
+
+ Tk_Fill3DRectangle(tkwin, pixmap, selectedBg, x, y,
width, listPtr->lineHeight, 0, TK_RELIEF_FLAT);
/*
@@ -1532,34 +1844,59 @@ DisplayListbox(clientData)
* corners are off-screen.
*/
+ /* Draw left bevel */
if (left == 0) {
- Tk_3DVerticalBevel(tkwin, pixmap, listPtr->selBorder,
+ Tk_3DVerticalBevel(tkwin, pixmap, selectedBg,
x, y, listPtr->selBorderWidth, listPtr->lineHeight,
1, TK_RELIEF_RAISED);
}
+ /* Draw right bevel */
if (right == 0) {
- Tk_3DVerticalBevel(tkwin, pixmap, listPtr->selBorder,
+ Tk_3DVerticalBevel(tkwin, pixmap, selectedBg,
x + width - listPtr->selBorderWidth, y,
listPtr->selBorderWidth, listPtr->lineHeight,
0, TK_RELIEF_RAISED);
}
+ /* Draw top bevel */
if (!prevSelected) {
- Tk_3DHorizontalBevel(tkwin, pixmap, listPtr->selBorder,
+ Tk_3DHorizontalBevel(tkwin, pixmap, selectedBg,
x-left, y, width+left+right, listPtr->selBorderWidth,
1, 1, 1, TK_RELIEF_RAISED);
}
+ /* Draw bottom bevel */
if (i + 1 == listPtr->nElements ||
Tcl_FindHashEntry(listPtr->selection,
(char *)(i + 1)) == NULL ) {
- Tk_3DHorizontalBevel(tkwin, pixmap, listPtr->selBorder, x-left,
+ Tk_3DHorizontalBevel(tkwin, pixmap, selectedBg, x-left,
y + listPtr->lineHeight - listPtr->selBorderWidth,
width+left+right, listPtr->selBorderWidth, 0, 0, 0,
TK_RELIEF_RAISED);
}
prevSelected = 1;
} else {
+ /* If there is an item attributes record for this item,
+ * draw the background box and set the foreground color
+ * accordingly */
+ if (entry != NULL) {
+ attrs = (ItemAttr *)Tcl_GetHashValue(entry);
+ gcValues.foreground = listPtr->fgColorPtr->pixel;
+ gcValues.font = Tk_FontId(listPtr->tkfont);
+ gcValues.graphics_exposures = False;
+ mask = GCForeground | GCFont | GCGraphicsExposures;
+ if (attrs->border != NULL) {
+ width = Tk_Width(tkwin) - 2*listPtr->inset;
+ Tk_Fill3DRectangle(tkwin, pixmap, attrs->border, x, y,
+ width, listPtr->lineHeight, 0, TK_RELIEF_FLAT);
+ }
+ if (attrs->fgColor != NULL) {
+ gcValues.foreground = attrs->fgColor->pixel;
+ gc = Tk_GetGC(listPtr->tkwin, mask, &gcValues);
+ }
+ }
prevSelected = 0;
}
+
+ /* Draw the actual text of this item */
Tk_GetFontMetrics(listPtr->tkfont, &fm);
y += fm.ascent + listPtr->selBorderWidth;
x = listPtr->inset + listPtr->selBorderWidth - listPtr->xOffset;
@@ -1568,10 +1905,7 @@ DisplayListbox(clientData)
Tk_DrawChars(listPtr->display, pixmap, gc, listPtr->tkfont,
stringRep, stringLen, x, y);
- /*
- * If this is the active element, underline it.
- */
-
+ /* If this is the active element, underline it. */
if ((i == listPtr->active) && (listPtr->flags & GOT_FOCUS)) {
Tk_UnderlineChars(listPtr->display, pixmap, gc, listPtr->tkfont,
stringRep, x, y, 0, stringLen);
@@ -1656,7 +1990,7 @@ ListboxComputeGeometry(listPtr, fontChanged, maxIsStale, updateGrid)
}
listPtr->maxWidth = 0;
for (i = 0; i < listPtr->nElements; i++) {
- /* Compute the pixel width of the requested element */
+ /* Compute the pixel width of the current element */
result = Tcl_ListObjIndex(listPtr->interp, listPtr->listObj, i,
&element);
if (result != TCL_OK) {
@@ -1733,8 +2067,7 @@ ListboxInsertSubCmd(listPtr, index, objc, objv)
int i, oldMaxWidth;
Tcl_Obj *newListObj;
int pixelWidth;
- int new, result;
- Tcl_HashEntry *entry;
+ int result;
char *stringRep;
int length;
@@ -1751,18 +2084,12 @@ ListboxInsertSubCmd(listPtr, index, objc, objv)
}
}
- /* First, foreach selected item with index >= insertIndex, relocate the
- * selection marker by objc counts. Start from the END of the list, so
- * that we don't get accidental collisions en route
- */
- for (i = listPtr->nElements - 1; i >= index; i--) {
- entry = Tcl_FindHashEntry(listPtr->selection, (char *)i);
- if (entry != NULL) {
- Tcl_DeleteHashEntry(entry);
- Tcl_CreateHashEntry(listPtr->selection, (char *)(i + objc), &new);
- }
- }
-
+ /* Adjust selection and attribute information for every index after
+ * the first index */
+ MigrateHashEntries(listPtr->selection, index, listPtr->nElements-1, objc);
+ MigrateHashEntries(listPtr->itemAttrTable, index, listPtr->nElements-1,
+ objc);
+
/* If the object is shared, duplicate it before writing to it */
if (Tcl_IsShared(listPtr->listObj)) {
newListObj = Tcl_DuplicateObj(listPtr->listObj);
@@ -1850,7 +2177,6 @@ ListboxDeleteSubCmd(listPtr, first, last)
Tcl_Obj *element;
int length;
char *stringRep;
- int new;
int result;
int pixelWidth;
Tcl_HashEntry *entry;
@@ -1887,6 +2213,11 @@ ListboxDeleteSubCmd(listPtr, first, last)
Tcl_DeleteHashEntry(entry);
}
+ entry = Tcl_FindHashEntry(listPtr->itemAttrTable, (char *)i);
+ if (entry != NULL) {
+ Tcl_DeleteHashEntry(entry);
+ }
+
/* Check width of the element. We only have to check if widthChanged
* has not already been set to 1, because we only need one maxWidth
* element to disappear for us to have to recompute the width
@@ -1901,16 +2232,12 @@ ListboxDeleteSubCmd(listPtr, first, last)
}
}
- /* Next, for every index greater than the lastIndex, if there is selection
- * information for that index, relocate it down by count steps */
- for (i = last + 1; i < listPtr->nElements; i++) {
- entry = Tcl_FindHashEntry(listPtr->selection, (char *)i);
- if (entry != NULL) {
- Tcl_DeleteHashEntry(entry);
- Tcl_CreateHashEntry(listPtr->selection, (char *)(i - count), &new);
- }
- }
-
+ /* Adjust selection and attribute info for indices after lastIndex */
+ MigrateHashEntries(listPtr->selection, last+1,
+ listPtr->nElements-1, count*-1);
+ MigrateHashEntries(listPtr->itemAttrTable, last+1,
+ listPtr->nElements-1, count*-1);
+
/* Delete the requested elements */
if (Tcl_IsShared(listPtr->listObj)) {
newListObj = Tcl_DuplicateObj(listPtr->listObj);
@@ -2471,7 +2798,9 @@ ListboxSelect(listPtr, first, last, select)
}
} else {
if (select) {
- Tcl_CreateHashEntry(listPtr->selection, (char *)i, &new);
+ entry = Tcl_CreateHashEntry(listPtr->selection,
+ (char *)i, &new);
+ Tcl_SetHashValue(entry, (ClientData) NULL);
listPtr->numSelected++;
if (firstRedisplay < 0) {
firstRedisplay = i;
@@ -2629,7 +2958,6 @@ ListboxLostSelection(clientData)
*----------------------------------------------------------------------
*/
- /* ARGSUSED */
static void
EventuallyRedrawRange(listPtr, first, last)
register Listbox *listPtr; /* Information about widget. */
@@ -2840,15 +3168,23 @@ ListboxListVarProc(clientData, interp, name1, name2, flags)
}
/*
- * If the list length has decreased, then we should clean up the selection
- * from elements past the end of the new list
+ * If the list length has decreased, then we should clean up selection and
+ * attributes information for elements past the end of the new list
*/
oldLength = listPtr->nElements;
Tcl_ListObjLength(listPtr->interp, listPtr->listObj, &listPtr->nElements);
if (listPtr->nElements < oldLength) {
for (i = listPtr->nElements; i < oldLength; i++) {
+ /* Clean up selection */
entry = Tcl_FindHashEntry(listPtr->selection, (char *)i);
if (entry != NULL) {
+ listPtr->numSelected--;
+ Tcl_DeleteHashEntry(entry);
+ }
+
+ /* Clean up attributes */
+ entry = Tcl_FindHashEntry(listPtr->itemAttrTable, (char *)i);
+ if (entry != NULL) {
Tcl_DeleteHashEntry(entry);
}
}
@@ -2867,3 +3203,63 @@ ListboxListVarProc(clientData, interp, name1, name2, flags)
return (char*)NULL;
}
+/*
+ *----------------------------------------------------------------------
+ *
+ * MigrateHashEntries --
+ *
+ * Given a hash table with entries keyed by a single integer value,
+ * move all entries in a given range by a fixed amount, so that
+ * if in the original table there was an entry with key n and
+ * the offset was i, in the new table that entry would have key n + i.
+ *
+ * Results:
+ * None.
+ *
+ * Side effects:
+ * Rekeys some hash table entries.
+ *
+ *----------------------------------------------------------------------
+ */
+
+static void
+MigrateHashEntries(table, first, last, offset)
+ Tcl_HashTable *table;
+ int first;
+ int last;
+ int offset;
+{
+ int i, new;
+ Tcl_HashEntry *entry;
+ ClientData clientData;
+
+ if (offset == 0) {
+ return;
+ }
+ /* It's more efficient to do one if/else and nest the for loops inside,
+ * although we could avoid some code duplication if we nested the if/else
+ * inside the for loops */
+ if (offset > 0) {
+ for (i = last; i >= first; i--) {
+ entry = Tcl_FindHashEntry(table, (char *)i);
+ if (entry != NULL) {
+ clientData = Tcl_GetHashValue(entry);
+ Tcl_DeleteHashEntry(entry);
+ entry = Tcl_CreateHashEntry(table, (char *)(i + offset), &new);
+ Tcl_SetHashValue(entry, clientData);
+ }
+ }
+ } else {
+ for (i = first; i <= last; i++) {
+ entry = Tcl_FindHashEntry(table, (char *)i);
+ if (entry != NULL) {
+ clientData = Tcl_GetHashValue(entry);
+ Tcl_DeleteHashEntry(entry);
+ entry = Tcl_CreateHashEntry(table, (char *)(i + offset), &new);
+ Tcl_SetHashValue(entry, clientData);
+ }
+ }
+ }
+ return;
+}
+