tkMenu.c
上传用户:rrhhcc
上传日期:2015-12-11
资源大小:54129k
文件大小:106k
- /*
- * tkMenu.c --
- *
- * This file contains most of the code for implementing menus in Tk. It takes
- * care of all of the generic (platform-independent) parts of menus, and
- * is supplemented by platform-specific files. The geometry calculation
- * and drawing code for menus is in the file tkMenuDraw.c
- *
- * Copyright (c) 1990-1994 The Regents of the University of California.
- * Copyright (c) 1994-1998 Sun Microsystems, Inc.
- *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- *
- * RCS: @(#) $Id: tkMenu.c,v 1.20.2.7 2006/05/25 23:51:37 hobbs Exp $
- */
- /*
- * Notes on implementation of menus:
- *
- * Menus can be used in three ways:
- * - as a popup menu, either as part of a menubutton or standalone.
- * - as a menubar. The menu's cascade items are arranged according to
- * the specific platform to provide the user access to the menus at all
- * times
- * - as a tearoff palette. This is a window with the menu's items in it.
- *
- * The goal is to provide the Tk developer with a way to use a common
- * set of menus for all of these tasks.
- *
- * In order to make the bindings for cascade menus work properly under Unix,
- * the cascade menus' pathnames must be proper children of the menu that
- * they are cascade from. So if there is a menu .m, and it has two
- * cascades labelled "File" and "Edit", the cascade menus might have
- * the pathnames .m.file and .m.edit. Another constraint is that the menus
- * used for menubars must be children of the toplevel widget that they
- * are attached to. And on the Macintosh, the platform specific menu handle
- * for cascades attached to a menu bar must have a title that matches the
- * label for the cascade menu.
- *
- * To handle all of the constraints, Tk menubars and tearoff menus are
- * implemented using menu clones. Menu clones are full menus in their own
- * right; they have a Tk window and pathname associated with them; they have
- * a TkMenu structure and array of entries. However, they are linked with the
- * original menu that they were cloned from. The reflect the attributes of
- * the original, or "master", menu. So if an item is added to a menu, and
- * that menu has clones, then the item must be added to all of its clones
- * also. Menus are cloned when a menu is torn-off or when a menu is assigned
- * as a menubar using the "-menu" option of the toplevel's pathname configure
- * subcommand. When a clone is destroyed, only the clone is destroyed, but
- * when the master menu is destroyed, all clones are also destroyed. This
- * allows the developer to just deal with one set of menus when creating
- * and destroying.
- *
- * Clones are rather tricky when a menu with cascade entries is cloned (such
- * as a menubar). Not only does the menu have to be cloned, but each cascade
- * entry's corresponding menu must also be cloned. This maintains the pathname
- * parent-child hierarchy necessary for menubars and toplevels to work.
- * This leads to several special cases:
- *
- * 1. When a new menu is created, and it is pointed to by cascade entries in
- * cloned menus, the new menu has to be cloned to parallel the cascade
- * structure.
- * 2. When a cascade item is added to a menu that has been cloned, and the
- * menu that the cascade item points to exists, that menu has to be cloned.
- * 3. When the menu that a cascade entry points to is changed, the old
- * cloned cascade menu has to be discarded, and the new one has to be cloned.
- *
- */
- #if 0
- /*
- * used only to test for old config code
- */
- #define __NO_OLD_CONFIG
- #endif
- #include "tkPort.h"
- #include "tkMenu.h"
- #define MENU_HASH_KEY "tkMenus"
- typedef struct ThreadSpecificData {
- int menusInitialized; /* Flag indicates whether thread-specific
- * elements of the Windows Menu module
- * have been initialized. */
- } ThreadSpecificData;
- static Tcl_ThreadDataKey dataKey;
- /*
- * The following flag indicates whether the process-wide state for
- * the Menu module has been intialized. The Mutex protects access to
- * that flag.
- */
- static int menusInitialized;
- TCL_DECLARE_MUTEX(menuMutex)
- /*
- * Configuration specs for individual menu entries. If this changes, be sure
- * to update code in TkpMenuInit that changes the font string entry.
- */
- char *tkMenuStateStrings[] = {"active", "normal", "disabled", (char *) NULL};
- static CONST char *menuEntryTypeStrings[] = {
- "cascade", "checkbutton", "command", "radiobutton", "separator",
- (char *) NULL
- };
- /*
- * The following table defines the legal values for the -compound option.
- * It is used with the "enum compound" declaration in tkMenu.h
- */
- static char *compoundStrings[] = {
- "bottom", "center", "left", "none", "right", "top", (char *) NULL
- };
- static Tk_OptionSpec tkBasicMenuEntryConfigSpecs[] = {
- {TK_OPTION_BORDER, "-activebackground", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_ACTIVE_BG, Tk_Offset(TkMenuEntry, activeBorderPtr), -1,
- TK_OPTION_NULL_OK},
- {TK_OPTION_COLOR, "-activeforeground", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_ACTIVE_FG,
- Tk_Offset(TkMenuEntry, activeFgPtr), -1, TK_OPTION_NULL_OK},
- {TK_OPTION_STRING, "-accelerator", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_ACCELERATOR,
- Tk_Offset(TkMenuEntry, accelPtr), -1, TK_OPTION_NULL_OK},
- {TK_OPTION_BORDER, "-background", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_BG,
- Tk_Offset(TkMenuEntry, borderPtr), -1, TK_OPTION_NULL_OK},
- {TK_OPTION_BITMAP, "-bitmap", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_BITMAP,
- Tk_Offset(TkMenuEntry, bitmapPtr), -1, TK_OPTION_NULL_OK},
- {TK_OPTION_BOOLEAN, "-columnbreak", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_COLUMN_BREAK,
- -1, Tk_Offset(TkMenuEntry, columnBreak)},
- {TK_OPTION_STRING, "-command", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_COMMAND,
- Tk_Offset(TkMenuEntry, commandPtr), -1, TK_OPTION_NULL_OK},
- {TK_OPTION_STRING_TABLE, "-compound", "compound", "Compound",
- DEF_MENU_ENTRY_COMPOUND, -1, Tk_Offset(TkMenuEntry, compound), 0,
- (ClientData) compoundStrings, 0},
- {TK_OPTION_FONT, "-font", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_FONT,
- Tk_Offset(TkMenuEntry, fontPtr), -1, TK_OPTION_NULL_OK},
- {TK_OPTION_COLOR, "-foreground", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_FG,
- Tk_Offset(TkMenuEntry, fgPtr), -1, TK_OPTION_NULL_OK},
- {TK_OPTION_BOOLEAN, "-hidemargin", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_HIDE_MARGIN,
- -1, Tk_Offset(TkMenuEntry, hideMargin)},
- {TK_OPTION_STRING, "-image", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_IMAGE,
- Tk_Offset(TkMenuEntry, imagePtr), -1, TK_OPTION_NULL_OK},
- {TK_OPTION_STRING, "-label", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_LABEL,
- Tk_Offset(TkMenuEntry, labelPtr), -1, 0},
- {TK_OPTION_STRING_TABLE, "-state", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_STATE,
- -1, Tk_Offset(TkMenuEntry, state), 0,
- (ClientData) tkMenuStateStrings},
- {TK_OPTION_INT, "-underline", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_UNDERLINE, -1, Tk_Offset(TkMenuEntry, underline)},
- {TK_OPTION_END}
- };
- static Tk_OptionSpec tkSeparatorEntryConfigSpecs[] = {
- {TK_OPTION_BORDER, "-background", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_BG,
- Tk_Offset(TkMenuEntry, borderPtr), -1, TK_OPTION_NULL_OK},
- {TK_OPTION_END}
- };
- static Tk_OptionSpec tkCheckButtonEntryConfigSpecs[] = {
- {TK_OPTION_BOOLEAN, "-indicatoron", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_INDICATOR,
- -1, Tk_Offset(TkMenuEntry, indicatorOn)},
- {TK_OPTION_STRING, "-offvalue", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_OFF_VALUE,
- Tk_Offset(TkMenuEntry, offValuePtr), -1},
- {TK_OPTION_STRING, "-onvalue", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_ON_VALUE,
- Tk_Offset(TkMenuEntry, onValuePtr), -1},
- {TK_OPTION_COLOR, "-selectcolor", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_SELECT,
- Tk_Offset(TkMenuEntry, indicatorFgPtr), -1, TK_OPTION_NULL_OK},
- {TK_OPTION_STRING, "-selectimage", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_SELECT_IMAGE,
- Tk_Offset(TkMenuEntry, selectImagePtr), -1, TK_OPTION_NULL_OK},
- {TK_OPTION_STRING, "-variable", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_CHECK_VARIABLE,
- Tk_Offset(TkMenuEntry, namePtr), -1, TK_OPTION_NULL_OK},
- {TK_OPTION_END, (char *) NULL, (char *) NULL, (char *) NULL,
- (char *) NULL, 0, -1, 0, (ClientData) tkBasicMenuEntryConfigSpecs}
- };
- static Tk_OptionSpec tkRadioButtonEntryConfigSpecs[] = {
- {TK_OPTION_BOOLEAN, "-indicatoron", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_INDICATOR,
- -1, Tk_Offset(TkMenuEntry, indicatorOn)},
- {TK_OPTION_COLOR, "-selectcolor", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_SELECT,
- Tk_Offset(TkMenuEntry, indicatorFgPtr), -1, TK_OPTION_NULL_OK},
- {TK_OPTION_STRING, "-selectimage", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_SELECT_IMAGE,
- Tk_Offset(TkMenuEntry, selectImagePtr), -1, TK_OPTION_NULL_OK},
- {TK_OPTION_STRING, "-value", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_VALUE,
- Tk_Offset(TkMenuEntry, onValuePtr), -1, TK_OPTION_NULL_OK},
- {TK_OPTION_STRING, "-variable", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_RADIO_VARIABLE,
- Tk_Offset(TkMenuEntry, namePtr), -1, 0},
- {TK_OPTION_END, (char *) NULL, (char *) NULL, (char *) NULL,
- (char *) NULL, 0, -1, 0, (ClientData) tkBasicMenuEntryConfigSpecs}
- };
- static Tk_OptionSpec tkCascadeEntryConfigSpecs[] = {
- {TK_OPTION_STRING, "-menu", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_MENU,
- Tk_Offset(TkMenuEntry, namePtr), -1, TK_OPTION_NULL_OK},
- {TK_OPTION_END, (char *) NULL, (char *) NULL, (char *) NULL,
- (char *) NULL, 0, -1, 0, (ClientData) tkBasicMenuEntryConfigSpecs}
- };
- static Tk_OptionSpec tkTearoffEntryConfigSpecs[] = {
- {TK_OPTION_BORDER, "-background", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_BG,
- Tk_Offset(TkMenuEntry, borderPtr), -1, TK_OPTION_NULL_OK},
- {TK_OPTION_STRING_TABLE, "-state", (char *) NULL, (char *) NULL,
- DEF_MENU_ENTRY_STATE, -1, Tk_Offset(TkMenuEntry, state), 0,
- (ClientData) tkMenuStateStrings},
- {TK_OPTION_END}
- };
- static Tk_OptionSpec *specsArray[] = {
- tkCascadeEntryConfigSpecs, tkCheckButtonEntryConfigSpecs,
- tkBasicMenuEntryConfigSpecs, tkRadioButtonEntryConfigSpecs,
- tkSeparatorEntryConfigSpecs, tkTearoffEntryConfigSpecs};
-
- /*
- * Menu type strings for use with Tcl_GetIndexFromObj.
- */
- static CONST char *menuTypeStrings[] = {"normal", "tearoff", "menubar",
- (char *) NULL};
- static Tk_OptionSpec tkMenuConfigSpecs[] = {
- {TK_OPTION_BORDER, "-activebackground", "activeBackground",
- "Foreground", DEF_MENU_ACTIVE_BG_COLOR,
- Tk_Offset(TkMenu, activeBorderPtr), -1, 0,
- (ClientData) DEF_MENU_ACTIVE_BG_MONO},
- {TK_OPTION_PIXELS, "-activeborderwidth", "activeBorderWidth",
- "BorderWidth", DEF_MENU_ACTIVE_BORDER_WIDTH,
- Tk_Offset(TkMenu, activeBorderWidthPtr), -1},
- {TK_OPTION_COLOR, "-activeforeground", "activeForeground",
- "Background", DEF_MENU_ACTIVE_FG_COLOR,
- Tk_Offset(TkMenu, activeFgPtr), -1, 0,
- (ClientData) DEF_MENU_ACTIVE_FG_MONO},
- {TK_OPTION_BORDER, "-background", "background", "Background",
- DEF_MENU_BG_COLOR, Tk_Offset(TkMenu, borderPtr), -1, 0,
- (ClientData) DEF_MENU_BG_MONO},
- {TK_OPTION_SYNONYM, "-bd", (char *) NULL, (char *) NULL,
- (char *) NULL, 0, -1, 0, (ClientData) "-borderwidth"},
- {TK_OPTION_SYNONYM, "-bg", (char *) NULL, (char *) NULL,
- (char *) NULL, 0, -1, 0, (ClientData) "-background"},
- {TK_OPTION_PIXELS, "-borderwidth", "borderWidth", "BorderWidth",
- DEF_MENU_BORDER_WIDTH,
- Tk_Offset(TkMenu, borderWidthPtr), -1, 0},
- {TK_OPTION_CURSOR, "-cursor", "cursor", "Cursor",
- DEF_MENU_CURSOR,
- Tk_Offset(TkMenu, cursorPtr), -1, TK_OPTION_NULL_OK},
- {TK_OPTION_COLOR, "-disabledforeground", "disabledForeground",
- "DisabledForeground", DEF_MENU_DISABLED_FG_COLOR,
- Tk_Offset(TkMenu, disabledFgPtr), -1, TK_OPTION_NULL_OK,
- (ClientData) DEF_MENU_DISABLED_FG_MONO},
- {TK_OPTION_SYNONYM, "-fg", (char *) NULL, (char *) NULL,
- (char *) NULL, 0, -1, 0, (ClientData) "-foreground"},
- {TK_OPTION_FONT, "-font", "font", "Font",
- DEF_MENU_FONT, Tk_Offset(TkMenu, fontPtr), -1},
- {TK_OPTION_COLOR, "-foreground", "foreground", "Foreground",
- DEF_MENU_FG, Tk_Offset(TkMenu, fgPtr), -1},
- {TK_OPTION_STRING, "-postcommand", "postCommand", "Command",
- DEF_MENU_POST_COMMAND,
- Tk_Offset(TkMenu, postCommandPtr), -1, TK_OPTION_NULL_OK},
- {TK_OPTION_RELIEF, "-relief", "relief", "Relief",
- DEF_MENU_RELIEF, Tk_Offset(TkMenu, reliefPtr), -1},
- {TK_OPTION_COLOR, "-selectcolor", "selectColor", "Background",
- DEF_MENU_SELECT_COLOR, Tk_Offset(TkMenu, indicatorFgPtr), -1, 0,
- (ClientData) DEF_MENU_SELECT_MONO},
- {TK_OPTION_STRING, "-takefocus", "takeFocus", "TakeFocus",
- DEF_MENU_TAKE_FOCUS,
- Tk_Offset(TkMenu, takeFocusPtr), -1, TK_OPTION_NULL_OK},
- {TK_OPTION_BOOLEAN, "-tearoff", "tearOff", "TearOff",
- DEF_MENU_TEAROFF, -1, Tk_Offset(TkMenu, tearoff)},
- {TK_OPTION_STRING, "-tearoffcommand", "tearOffCommand",
- "TearOffCommand", DEF_MENU_TEAROFF_CMD,
- Tk_Offset(TkMenu, tearoffCommandPtr), -1, TK_OPTION_NULL_OK},
- {TK_OPTION_STRING, "-title", "title", "Title",
- DEF_MENU_TITLE, Tk_Offset(TkMenu, titlePtr), -1,
- TK_OPTION_NULL_OK},
- {TK_OPTION_STRING_TABLE, "-type", "type", "Type",
- DEF_MENU_TYPE, Tk_Offset(TkMenu, menuTypePtr), -1, TK_OPTION_NULL_OK,
- (ClientData) menuTypeStrings},
- {TK_OPTION_END}
- };
- /*
- * Command line options. Put here because MenuCmd has to look at them
- * along with MenuWidgetObjCmd.
- */
- static CONST char *menuOptions[] = {
- "activate", "add", "cget", "clone", "configure", "delete", "entrycget",
- "entryconfigure", "index", "insert", "invoke", "post", "postcascade",
- "type", "unpost", "yposition", (char *) NULL
- };
- enum options {
- MENU_ACTIVATE, MENU_ADD, MENU_CGET, MENU_CLONE, MENU_CONFIGURE,
- MENU_DELETE, MENU_ENTRYCGET, MENU_ENTRYCONFIGURE, MENU_INDEX,
- MENU_INSERT, MENU_INVOKE, MENU_POST, MENU_POSTCASCADE, MENU_TYPE,
- MENU_UNPOST, MENU_YPOSITION
- };
- /*
- * Prototypes for static procedures in this file:
- */
- static int CloneMenu _ANSI_ARGS_((TkMenu *menuPtr,
- Tcl_Obj *newMenuName, Tcl_Obj *newMenuTypeString));
- static int ConfigureMenu _ANSI_ARGS_((Tcl_Interp *interp,
- TkMenu *menuPtr, int objc, Tcl_Obj *CONST objv[]));
- static int ConfigureMenuCloneEntries _ANSI_ARGS_((
- Tcl_Interp *interp, TkMenu *menuPtr, int index,
- int objc, Tcl_Obj *CONST objv[]));
- static int ConfigureMenuEntry _ANSI_ARGS_((TkMenuEntry *mePtr,
- int objc, Tcl_Obj *CONST objv[]));
- static void DeleteMenuCloneEntries _ANSI_ARGS_((TkMenu *menuPtr,
- int first, int last));
- static void DestroyMenuHashTable _ANSI_ARGS_((
- ClientData clientData, Tcl_Interp *interp));
- static void DestroyMenuInstance _ANSI_ARGS_((TkMenu *menuPtr));
- static void DestroyMenuEntry _ANSI_ARGS_((char *memPtr));
- static int GetIndexFromCoords
- _ANSI_ARGS_((Tcl_Interp *interp, TkMenu *menuPtr,
- char *string, int *indexPtr));
- static int MenuDoYPosition _ANSI_ARGS_((Tcl_Interp *interp,
- TkMenu *menuPtr, Tcl_Obj *objPtr));
- static int MenuAddOrInsert _ANSI_ARGS_((Tcl_Interp *interp,
- TkMenu *menuPtr, Tcl_Obj *indexPtr, int objc,
- Tcl_Obj *CONST objv[]));
- static int MenuCmd _ANSI_ARGS_((ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *CONST objv[]));
- static void MenuCmdDeletedProc _ANSI_ARGS_((
- ClientData clientData));
- static TkMenuEntry * MenuNewEntry _ANSI_ARGS_((TkMenu *menuPtr, int index,
- int type));
- static char * MenuVarProc _ANSI_ARGS_((ClientData clientData,
- Tcl_Interp *interp, CONST char *name1,
- CONST char *name2, int flags));
- static int MenuWidgetObjCmd _ANSI_ARGS_((ClientData clientData,
- Tcl_Interp *interp, int objc,
- Tcl_Obj *CONST objv[]));
- static void MenuWorldChanged _ANSI_ARGS_((
- ClientData instanceData));
- static int PostProcessEntry _ANSI_ARGS_((TkMenuEntry *mePtr));
- static void RecursivelyDeleteMenu _ANSI_ARGS_((TkMenu *menuPtr));
- static void UnhookCascadeEntry _ANSI_ARGS_((TkMenuEntry *mePtr));
- static Tcl_ExitProc TkMenuCleanup;
- /*
- * The structure below is a list of procs that respond to certain window
- * manager events. One of these includes a font change, which forces
- * the geometry proc to be called.
- */
- static Tk_ClassProcs menuClass = {
- sizeof(Tk_ClassProcs), /* size */
- MenuWorldChanged /* worldChangedProc */
- };
- /*
- *--------------------------------------------------------------
- *
- * TkCreateMenuCmd --
- *
- * Called by Tk at initialization time to create the menu
- * command.
- *
- * Results:
- * A standard Tcl result.
- *
- * Side effects:
- * See the user documentation.
- *
- *--------------------------------------------------------------
- */
- int
- TkCreateMenuCmd(interp)
- Tcl_Interp *interp; /* Interpreter we are creating the
- * command in. */
- {
- TkMenuOptionTables *optionTablesPtr =
- (TkMenuOptionTables *) ckalloc(sizeof(TkMenuOptionTables));
- optionTablesPtr->menuOptionTable =
- Tk_CreateOptionTable(interp, tkMenuConfigSpecs);
- optionTablesPtr->entryOptionTables[TEAROFF_ENTRY] =
- Tk_CreateOptionTable(interp, specsArray[TEAROFF_ENTRY]);
- optionTablesPtr->entryOptionTables[COMMAND_ENTRY] =
- Tk_CreateOptionTable(interp, specsArray[COMMAND_ENTRY]);
- optionTablesPtr->entryOptionTables[CASCADE_ENTRY] =
- Tk_CreateOptionTable(interp, specsArray[CASCADE_ENTRY]);
- optionTablesPtr->entryOptionTables[SEPARATOR_ENTRY] =
- Tk_CreateOptionTable(interp, specsArray[SEPARATOR_ENTRY]);
- optionTablesPtr->entryOptionTables[RADIO_BUTTON_ENTRY] =
- Tk_CreateOptionTable(interp, specsArray[RADIO_BUTTON_ENTRY]);
- optionTablesPtr->entryOptionTables[CHECK_BUTTON_ENTRY] =
- Tk_CreateOptionTable(interp, specsArray[CHECK_BUTTON_ENTRY]);
- Tcl_CreateObjCommand(interp, "menu", MenuCmd,
- (ClientData) optionTablesPtr, NULL);
- if (Tcl_IsSafe(interp)) {
- Tcl_HideCommand(interp, "menu", "menu");
- }
- return TCL_OK;
- }
- /*
- *--------------------------------------------------------------
- *
- * MenuCmd --
- *
- * This procedure is invoked to process the "menu" Tcl
- * command. See the user documentation for details on
- * what it does.
- *
- * Results:
- * A standard Tcl result.
- *
- * Side effects:
- * See the user documentation.
- *
- *--------------------------------------------------------------
- */
- static int
- MenuCmd(clientData, interp, objc, objv)
- ClientData clientData; /* Main window associated with
- * interpreter. */
- Tcl_Interp *interp; /* Current interpreter. */
- int objc; /* Number of arguments. */
- Tcl_Obj *CONST objv[]; /* Argument strings. */
- {
- Tk_Window tkwin = Tk_MainWindow(interp);
- Tk_Window new;
- register TkMenu *menuPtr;
- TkMenuReferences *menuRefPtr;
- int i, index;
- int toplevel;
- char *windowName;
- static CONST char *typeStringList[] = {"-type", (char *) NULL};
- TkMenuOptionTables *optionTablesPtr = (TkMenuOptionTables *) clientData;
- if (objc < 2) {
- Tcl_WrongNumArgs(interp, 1, objv, "pathName ?options?");
- return TCL_ERROR;
- }
- TkMenuInit();
- toplevel = 1;
- for (i = 2; i < (objc - 1); i++) {
- if (Tcl_GetIndexFromObj(NULL, objv[i], typeStringList, NULL, 0, &index)
- != TCL_ERROR) {
- if ((Tcl_GetIndexFromObj(NULL, objv[i + 1], menuTypeStrings, NULL,
- 0, &index) == TCL_OK) && (index == MENUBAR)) {
- toplevel = 0;
- }
- break;
- }
- }
- windowName = Tcl_GetStringFromObj(objv[1], NULL);
- new = Tk_CreateWindowFromPath(interp, tkwin, windowName, toplevel ? ""
- : NULL);
- if (new == NULL) {
- return TCL_ERROR;
- }
- /*
- * Initialize the data structure for the menu. Note that the
- * menuPtr is eventually freed in 'TkMenuEventProc' in tkMenuDraw.c,
- * when Tcl_EventuallyFree is called.
- */
- menuPtr = (TkMenu *) ckalloc(sizeof(TkMenu));
- memset(menuPtr, 0, sizeof(TkMenu));
- menuPtr->tkwin = new;
- menuPtr->display = Tk_Display(new);
- menuPtr->interp = interp;
- menuPtr->widgetCmd = Tcl_CreateObjCommand(interp,
- Tk_PathName(menuPtr->tkwin), MenuWidgetObjCmd,
- (ClientData) menuPtr, MenuCmdDeletedProc);
- menuPtr->active = -1;
- menuPtr->cursorPtr = None;
- menuPtr->masterMenuPtr = menuPtr;
- menuPtr->menuType = UNKNOWN_TYPE;
- menuPtr->optionTablesPtr = optionTablesPtr;
- TkMenuInitializeDrawingFields(menuPtr);
- Tk_SetClass(menuPtr->tkwin, "Menu");
- Tk_SetClassProcs(menuPtr->tkwin, &menuClass, (ClientData) menuPtr);
- Tk_CreateEventHandler(new, ExposureMask|StructureNotifyMask|ActivateMask,
- TkMenuEventProc, (ClientData) menuPtr);
- if (Tk_InitOptions(interp, (char *) menuPtr,
- menuPtr->optionTablesPtr->menuOptionTable, menuPtr->tkwin)
- != TCL_OK) {
- Tk_DestroyWindow(menuPtr->tkwin);
- return TCL_ERROR;
- }
- menuRefPtr = TkCreateMenuReferences(menuPtr->interp,
- Tk_PathName(menuPtr->tkwin));
- menuRefPtr->menuPtr = menuPtr;
- menuPtr->menuRefPtr = menuRefPtr;
- if (TCL_OK != TkpNewMenu(menuPtr)) {
- Tk_DestroyWindow(menuPtr->tkwin);
- return TCL_ERROR;
- }
- if (ConfigureMenu(interp, menuPtr, objc - 2, objv + 2) != TCL_OK) {
- Tk_DestroyWindow(menuPtr->tkwin);
- return TCL_ERROR;
- }
- /*
- * If a menu has a parent menu pointing to it as a cascade entry, the
- * parent menu needs to be told that this menu now exists so that
- * the platform-part of the menu is correctly updated.
- *
- * If a menu has an instance and has cascade entries, then each cascade
- * menu must also have a parallel instance. This is especially true on
- * the Mac, where each menu has to have a separate title everytime it is in
- * a menubar. For instance, say you have a menu .m1 with a cascade entry
- * for .m2, where .m2 does not exist yet. You then put .m1 into a menubar.
- * This creates a menubar instance for .m1, but since .m2 is not there,
- * nothing else happens. When we go to create .m2, we hook it up properly
- * with .m1. However, we now need to clone .m2 and assign the clone of .m2
- * to be the cascade entry for the clone of .m1. This is special case
- * #1 listed in the introductory comment.
- */
- if (menuRefPtr->parentEntryPtr != NULL) {
- TkMenuEntry *cascadeListPtr = menuRefPtr->parentEntryPtr;
- TkMenuEntry *nextCascadePtr;
- Tcl_Obj *newMenuName;
- Tcl_Obj *newObjv[2];
- while (cascadeListPtr != NULL) {
- nextCascadePtr = cascadeListPtr->nextCascadePtr;
- /*
- * If we have a new master menu, and an existing cloned menu
- * points to this menu in a cascade entry, we have to clone
- * the new menu and point the entry to the clone instead
- * of the menu we are creating. Otherwise, ConfigureMenuEntry
- * will hook up the platform-specific cascade linkages now
- * that the menu we are creating exists.
- */
- if ((menuPtr->masterMenuPtr != menuPtr)
- || ((menuPtr->masterMenuPtr == menuPtr)
- && ((cascadeListPtr->menuPtr->masterMenuPtr
- == cascadeListPtr->menuPtr)))) {
- newObjv[0] = Tcl_NewStringObj("-menu", -1);
- newObjv[1] = Tcl_NewStringObj(Tk_PathName(menuPtr->tkwin), -1);
- Tcl_IncrRefCount(newObjv[0]);
- Tcl_IncrRefCount(newObjv[1]);
- ConfigureMenuEntry(cascadeListPtr, 2, newObjv);
- Tcl_DecrRefCount(newObjv[0]);
- Tcl_DecrRefCount(newObjv[1]);
- } else {
- Tcl_Obj *normalPtr = Tcl_NewStringObj("normal", -1);
- Tcl_Obj *windowNamePtr = Tcl_NewStringObj(
- Tk_PathName(cascadeListPtr->menuPtr->tkwin), -1);
- Tcl_IncrRefCount(normalPtr);
- Tcl_IncrRefCount(windowNamePtr);
- newMenuName = TkNewMenuName(menuPtr->interp,
- windowNamePtr, menuPtr);
- Tcl_IncrRefCount(newMenuName);
- CloneMenu(menuPtr, newMenuName, normalPtr);
- /*
- * Now we can set the new menu instance to be the cascade entry
- * of the parent's instance.
- */
- newObjv[0] = Tcl_NewStringObj("-menu", -1);
- newObjv[1] = newMenuName;
- Tcl_IncrRefCount(newObjv[0]);
- ConfigureMenuEntry(cascadeListPtr, 2, newObjv);
- Tcl_DecrRefCount(normalPtr);
- Tcl_DecrRefCount(newObjv[0]);
- Tcl_DecrRefCount(newObjv[1]);
- Tcl_DecrRefCount(windowNamePtr);
- }
- cascadeListPtr = nextCascadePtr;
- }
- }
- /*
- * If there already exist toplevel widgets that refer to this menu,
- * find them and notify them so that they can reconfigure their
- * geometry to reflect the menu.
- */
- if (menuRefPtr->topLevelListPtr != NULL) {
- TkMenuTopLevelList *topLevelListPtr = menuRefPtr->topLevelListPtr;
- TkMenuTopLevelList *nextPtr;
- Tk_Window listtkwin;
- while (topLevelListPtr != NULL) {
- /*
- * Need to get the next pointer first. TkSetWindowMenuBar
- * changes the list, so that the next pointer is different
- * after calling it.
- */
- nextPtr = topLevelListPtr->nextPtr;
- listtkwin = topLevelListPtr->tkwin;
- TkSetWindowMenuBar(menuPtr->interp, listtkwin,
- Tk_PathName(menuPtr->tkwin), Tk_PathName(menuPtr->tkwin));
- topLevelListPtr = nextPtr;
- }
- }
- Tcl_SetResult(interp, Tk_PathName(menuPtr->tkwin), TCL_STATIC);
- return TCL_OK;
- }
- /*
- *--------------------------------------------------------------
- *
- * MenuWidgetObjCmd --
- *
- * This procedure is invoked to process the Tcl command
- * that corresponds to a widget managed by this module.
- * See the user documentation for details on what it does.
- *
- * Results:
- * A standard Tcl result.
- *
- * Side effects:
- * See the user documentation.
- *
- *--------------------------------------------------------------
- */
- static int
- MenuWidgetObjCmd(clientData, interp, objc, objv)
- ClientData clientData; /* Information about menu widget. */
- Tcl_Interp *interp; /* Current interpreter. */
- int objc; /* Number of arguments. */
- Tcl_Obj *CONST objv[]; /* Argument strings. */
- {
- register TkMenu *menuPtr = (TkMenu *) clientData;
- register TkMenuEntry *mePtr;
- int result = TCL_OK;
- int option;
- if (objc < 2) {
- Tcl_WrongNumArgs(interp, 1, objv, "option ?arg arg ...?");
- return TCL_ERROR;
- }
- if (Tcl_GetIndexFromObj(interp, objv[1], menuOptions, "option", 0,
- &option) != TCL_OK) {
- return TCL_ERROR;
- }
- Tcl_Preserve((ClientData) menuPtr);
- switch ((enum options) option) {
- case MENU_ACTIVATE: {
- int index;
- if (objc != 3) {
- Tcl_WrongNumArgs(interp, 1, objv, "activate index");
- goto error;
- }
- if (TkGetMenuIndex(interp, menuPtr, objv[2], 0, &index)
- != TCL_OK) {
- goto error;
- }
- if (menuPtr->active == index) {
- goto done;
- }
- if ((index >= 0)
- && ((menuPtr->entries[index]->type == SEPARATOR_ENTRY)
- || (menuPtr->entries[index]->state
- == ENTRY_DISABLED))) {
- index = -1;
- }
- result = TkActivateMenuEntry(menuPtr, index);
- break;
- }
- case MENU_ADD:
- if (objc < 3) {
- Tcl_WrongNumArgs(interp, 1, objv, "add type ?options?");
- goto error;
- }
- if (MenuAddOrInsert(interp, menuPtr, (Tcl_Obj *) NULL,
- objc - 2, objv + 2) != TCL_OK) {
- goto error;
- }
- break;
- case MENU_CGET: {
- Tcl_Obj *resultPtr;
- if (objc != 3) {
- Tcl_WrongNumArgs(interp, 1, objv, "cget option");
- goto error;
- }
- resultPtr = Tk_GetOptionValue(interp, (char *) menuPtr,
- menuPtr->optionTablesPtr->menuOptionTable, objv[2],
- menuPtr->tkwin);
- if (resultPtr == NULL) {
- goto error;
- }
- Tcl_SetObjResult(interp, resultPtr);
- break;
- }
- case MENU_CLONE:
- if ((objc < 3) || (objc > 4)) {
- Tcl_WrongNumArgs(interp, 1, objv,
- "clone newMenuName ?menuType?");
- goto error;
- }
- result = CloneMenu(menuPtr, objv[2], (objc == 3) ? NULL : objv[3]);
- break;
- case MENU_CONFIGURE: {
- Tcl_Obj *resultPtr;
- if (objc == 2) {
- resultPtr = Tk_GetOptionInfo(interp, (char *) menuPtr,
- menuPtr->optionTablesPtr->menuOptionTable,
- (Tcl_Obj *) NULL, menuPtr->tkwin);
- if (resultPtr == NULL) {
- result = TCL_ERROR;
- } else {
- result = TCL_OK;
- Tcl_SetObjResult(interp, resultPtr);
- }
- } else if (objc == 3) {
- resultPtr = Tk_GetOptionInfo(interp, (char *) menuPtr,
- menuPtr->optionTablesPtr->menuOptionTable,
- objv[2], menuPtr->tkwin);
- if (resultPtr == NULL) {
- result = TCL_ERROR;
- } else {
- result = TCL_OK;
- Tcl_SetObjResult(interp, resultPtr);
- }
- } else {
- result = ConfigureMenu(interp, menuPtr, objc - 2, objv + 2);
- }
- if (result != TCL_OK) {
- goto error;
- }
- break;
- }
- case MENU_DELETE: {
- int first, last;
-
- if ((objc != 3) && (objc != 4)) {
- Tcl_WrongNumArgs(interp, 1, objv, "delete first ?last?");
- goto error;
- }
- if (TkGetMenuIndex(interp, menuPtr, objv[2], 0, &first)
- != TCL_OK) {
- goto error;
- }
- if (objc == 3) {
- last = first;
- } else {
- if (TkGetMenuIndex(interp, menuPtr, objv[3], 0, &last)
- != TCL_OK) {
- goto error;
- }
- }
- if (menuPtr->tearoff && (first == 0)) {
- /*
- * Sorry, can't delete the tearoff entry; must reconfigure
- * the menu.
- */
-
- first = 1;
- }
- if ((first < 0) || (last < first)) {
- goto done;
- }
- DeleteMenuCloneEntries(menuPtr, first, last);
- break;
- }
- case MENU_ENTRYCGET: {
- int index;
- Tcl_Obj *resultPtr;
- if (objc != 4) {
- Tcl_WrongNumArgs(interp, 1, objv, "entrycget index option");
- goto error;
- }
- if (TkGetMenuIndex(interp, menuPtr, objv[2], 0, &index)
- != TCL_OK) {
- goto error;
- }
- if (index < 0) {
- goto done;
- }
- mePtr = menuPtr->entries[index];
- Tcl_Preserve((ClientData) mePtr);
- resultPtr = Tk_GetOptionValue(interp, (char *) mePtr,
- mePtr->optionTable, objv[3], menuPtr->tkwin);
- Tcl_Release((ClientData) mePtr);
- if (resultPtr == NULL) {
- goto error;
- }
- Tcl_SetObjResult(interp, resultPtr);
- break;
- }
- case MENU_ENTRYCONFIGURE: {
- int index;
- Tcl_Obj *resultPtr;
- if (objc < 3) {
- Tcl_WrongNumArgs(interp, 1, objv,
- "entryconfigure index ?option value ...?");
- goto error;
- }
- if (TkGetMenuIndex(interp, menuPtr, objv[2], 0, &index)
- != TCL_OK) {
- goto error;
- }
- if (index < 0) {
- goto done;
- }
- mePtr = menuPtr->entries[index];
- Tcl_Preserve((ClientData) mePtr);
- if (objc == 3) {
- resultPtr = Tk_GetOptionInfo(interp, (char *) mePtr,
- mePtr->optionTable, (Tcl_Obj *) NULL, menuPtr->tkwin);
- if (resultPtr == NULL) {
- result = TCL_ERROR;
- } else {
- result = TCL_OK;
- Tcl_SetObjResult(interp, resultPtr);
- }
- } else if (objc == 4) {
- resultPtr = Tk_GetOptionInfo(interp, (char *) mePtr,
- mePtr->optionTable, objv[3], menuPtr->tkwin);
- if (resultPtr == NULL) {
- result = TCL_ERROR;
- } else {
- result = TCL_OK;
- Tcl_SetObjResult(interp, resultPtr);
- }
- } else {
- result = ConfigureMenuCloneEntries(interp, menuPtr, index,
- objc - 3, objv + 3);
- }
- Tcl_Release((ClientData) mePtr);
- break;
- }
- case MENU_INDEX: {
- int index;
- if (objc != 3) {
- Tcl_WrongNumArgs(interp, 1, objv, "index string");
- goto error;
- }
- if (TkGetMenuIndex(interp, menuPtr, objv[2], 0, &index)
- != TCL_OK) {
- goto error;
- }
- if (index < 0) {
- Tcl_SetResult(interp, "none", TCL_STATIC);
- } else {
- Tcl_SetIntObj(Tcl_GetObjResult(interp), index);
- }
- break;
- }
- case MENU_INSERT:
- if (objc < 4) {
- Tcl_WrongNumArgs(interp, 1, objv,
- "insert index type ?options?");
- goto error;
- }
- if (MenuAddOrInsert(interp, menuPtr, objv[2], objc - 3,
- objv + 3) != TCL_OK) {
- goto error;
- }
- break;
- case MENU_INVOKE: {
- int index;
- if (objc != 3) {
- Tcl_WrongNumArgs(interp, 1, objv, "invoke index");
- goto error;
- }
- if (TkGetMenuIndex(interp, menuPtr, objv[2], 0, &index)
- != TCL_OK) {
- goto error;
- }
- if (index < 0) {
- goto done;
- }
- result = TkInvokeMenu(interp, menuPtr, index);
- break;
- }
- case MENU_POST: {
- int x, y;
- if (objc != 4) {
- Tcl_WrongNumArgs(interp, 1, objv, "post x y");
- goto error;
- }
- if ((Tcl_GetIntFromObj(interp, objv[2], &x) != TCL_OK)
- || (Tcl_GetIntFromObj(interp, objv[3], &y) != TCL_OK)) {
- goto error;
- }
- /*
- * Tearoff menus are posted differently on Mac and Windows than
- * non-tearoffs. TkpPostMenu does not actually map the menu's
- * window on those platforms, and popup menus have to be
- * handled specially.
- */
-
- if (menuPtr->menuType != TEAROFF_MENU) {
- result = TkpPostMenu(interp, menuPtr, x, y);
- } else {
- result = TkPostTearoffMenu(interp, menuPtr, x, y);
- }
- break;
- }
- case MENU_POSTCASCADE: {
- int index;
- if (objc != 3) {
- Tcl_WrongNumArgs(interp, 1, objv, "postcascade index");
- goto error;
- }
- if (TkGetMenuIndex(interp, menuPtr, objv[2], 0, &index)
- != TCL_OK) {
- goto error;
- }
- if ((index < 0) || (menuPtr->entries[index]->type
- != CASCADE_ENTRY)) {
- result = TkPostSubmenu(interp, menuPtr, (TkMenuEntry *) NULL);
- } else {
- result = TkPostSubmenu(interp, menuPtr,
- menuPtr->entries[index]);
- }
- break;
- }
- case MENU_TYPE: {
- int index;
- if (objc != 3) {
- Tcl_WrongNumArgs(interp, 1, objv, "type index");
- goto error;
- }
- if (TkGetMenuIndex(interp, menuPtr, objv[2], 0, &index)
- != TCL_OK) {
- goto error;
- }
- if (index < 0) {
- goto done;
- }
- if (menuPtr->entries[index]->type == TEAROFF_ENTRY) {
- Tcl_SetResult(interp, "tearoff", TCL_STATIC);
- } else {
- Tcl_SetStringObj(Tcl_GetObjResult(interp),
- menuEntryTypeStrings[menuPtr->entries[index]->type],
- -1);
- }
- break;
- }
- case MENU_UNPOST:
- if (objc != 2) {
- Tcl_WrongNumArgs(interp, 1, objv, "unpost");
- goto error;
- }
- Tk_UnmapWindow(menuPtr->tkwin);
- result = TkPostSubmenu(interp, menuPtr, (TkMenuEntry *) NULL);
- break;
- case MENU_YPOSITION:
- if (objc != 3) {
- Tcl_WrongNumArgs(interp, 1, objv, "yposition index");
- goto error;
- }
- result = MenuDoYPosition(interp, menuPtr, objv[2]);
- break;
- }
- done:
- Tcl_Release((ClientData) menuPtr);
- return result;
- error:
- Tcl_Release((ClientData) menuPtr);
- return TCL_ERROR;
- }
- /*
- *----------------------------------------------------------------------
- *
- * TkInvokeMenu --
- *
- * Given a menu and an index, takes the appropriate action for the
- * entry associated with that index.
- *
- * Results:
- * Standard Tcl result.
- *
- * Side effects:
- * Commands may get excecuted; variables may get set; sub-menus may
- * get posted.
- *
- *----------------------------------------------------------------------
- */
- int
- TkInvokeMenu(interp, menuPtr, index)
- Tcl_Interp *interp; /* The interp that the menu lives in. */
- TkMenu *menuPtr; /* The menu we are invoking. */
- int index; /* The zero based index of the item we
- * are invoking */
- {
- int result = TCL_OK;
- TkMenuEntry *mePtr;
-
- if (index < 0) {
- goto done;
- }
- mePtr = menuPtr->entries[index];
- if (mePtr->state == ENTRY_DISABLED) {
- goto done;
- }
- Tcl_Preserve((ClientData) mePtr);
- if (mePtr->type == TEAROFF_ENTRY) {
- Tcl_DString ds;
- Tcl_DStringInit(&ds);
- Tcl_DStringAppend(&ds, "tk::TearOffMenu ", -1);
- Tcl_DStringAppend(&ds, Tk_PathName(menuPtr->tkwin), -1);
- result = Tcl_Eval(interp, Tcl_DStringValue(&ds));
- Tcl_DStringFree(&ds);
- } else if ((mePtr->type == CHECK_BUTTON_ENTRY)
- && (mePtr->namePtr != NULL)) {
- Tcl_Obj *valuePtr;
- if (mePtr->entryFlags & ENTRY_SELECTED) {
- valuePtr = mePtr->offValuePtr;
- } else {
- valuePtr = mePtr->onValuePtr;
- }
- if (valuePtr == NULL) {
- valuePtr = Tcl_NewObj();
- }
- Tcl_IncrRefCount(valuePtr);
- if (Tcl_ObjSetVar2(interp, mePtr->namePtr, NULL, valuePtr,
- TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
- result = TCL_ERROR;
- }
- Tcl_DecrRefCount(valuePtr);
- } else if ((mePtr->type == RADIO_BUTTON_ENTRY)
- && (mePtr->namePtr != NULL)) {
- Tcl_Obj *valuePtr = mePtr->onValuePtr;
- if (valuePtr == NULL) {
- valuePtr = Tcl_NewObj();
- }
- Tcl_IncrRefCount(valuePtr);
- if (Tcl_ObjSetVar2(interp, mePtr->namePtr, NULL, valuePtr,
- TCL_GLOBAL_ONLY|TCL_LEAVE_ERR_MSG) == NULL) {
- result = TCL_ERROR;
- }
- Tcl_DecrRefCount(valuePtr);
- }
- /*
- * We check numEntries in addition to whether the menu entry
- * has a command because that goes to zero if the menu gets
- * deleted (e.g., during command evaluation).
- */
- if ((menuPtr->numEntries != 0) && (result == TCL_OK)
- && (mePtr->commandPtr != NULL)) {
- Tcl_Obj *commandPtr = mePtr->commandPtr;
- Tcl_IncrRefCount(commandPtr);
- result = Tcl_EvalObjEx(interp, commandPtr, TCL_EVAL_GLOBAL);
- Tcl_DecrRefCount(commandPtr);
- }
- Tcl_Release((ClientData) mePtr);
- done:
- return result;
- }
- /*
- *----------------------------------------------------------------------
- *
- * DestroyMenuInstance --
- *
- * This procedure is invoked by TkDestroyMenu
- * to clean up the internal structure of a menu at a safe time
- * (when no-one is using it anymore). Only takes care of one instance
- * of the menu.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Everything associated with the menu is freed up.
- *
- *----------------------------------------------------------------------
- */
- static void
- DestroyMenuInstance(menuPtr)
- TkMenu *menuPtr; /* Info about menu widget. */
- {
- int i;
- TkMenu *menuInstancePtr;
- TkMenuEntry *cascadePtr, *nextCascadePtr;
- Tcl_Obj *newObjv[2];
- TkMenu *parentMasterMenuPtr;
- TkMenuEntry *parentMasterEntryPtr;
-
- /*
- * If the menu has any cascade menu entries pointing to it, the cascade
- * entries need to be told that the menu is going away. We need to clear
- * the menu ptr field in the menu reference at this point in the code
- * so that everything else can forget about this menu properly. We also
- * need to reset -menu field of all entries that are not master menus
- * back to this entry name if this is a master menu pointed to by another
- * master menu. If there is a clone menu that points to this menu,
- * then this menu is itself a clone, so when this menu goes away,
- * the -menu field of the pointing entry must be set back to this
- * menu's master menu name so that later if another menu is created
- * the cascade hierarchy can be maintained.
- */
- TkpDestroyMenu(menuPtr);
- if (menuPtr->menuRefPtr == NULL) {
- return;
- }
- cascadePtr = menuPtr->menuRefPtr->parentEntryPtr;
- menuPtr->menuRefPtr->menuPtr = NULL;
- if (TkFreeMenuReferences(menuPtr->menuRefPtr)) {
- menuPtr->menuRefPtr = NULL;
- }
- for (; cascadePtr != NULL; cascadePtr = nextCascadePtr) {
- nextCascadePtr = cascadePtr->nextCascadePtr;
-
- if (menuPtr->masterMenuPtr != menuPtr) {
- Tcl_Obj *menuNamePtr = Tcl_NewStringObj("-menu", -1);
- parentMasterMenuPtr = cascadePtr->menuPtr->masterMenuPtr;
- parentMasterEntryPtr =
- parentMasterMenuPtr->entries[cascadePtr->index];
- newObjv[0] = menuNamePtr;
- newObjv[1] = parentMasterEntryPtr->namePtr;
- /*
- * It is possible that the menu info is out of sync, and
- * these things point to NULL, so verify existence [Bug: 3402]
- */
- if (newObjv[0] && newObjv[1]) {
- Tcl_IncrRefCount(newObjv[0]);
- Tcl_IncrRefCount(newObjv[1]);
- ConfigureMenuEntry(cascadePtr, 2, newObjv);
- Tcl_DecrRefCount(newObjv[0]);
- Tcl_DecrRefCount(newObjv[1]);
- }
- } else {
- ConfigureMenuEntry(cascadePtr, 0, (Tcl_Obj **) NULL);
- }
- }
-
- if (menuPtr->masterMenuPtr != menuPtr) {
- for (menuInstancePtr = menuPtr->masterMenuPtr;
- menuInstancePtr != NULL;
- menuInstancePtr = menuInstancePtr->nextInstancePtr) {
- if (menuInstancePtr->nextInstancePtr == menuPtr) {
- menuInstancePtr->nextInstancePtr =
- menuInstancePtr->nextInstancePtr->nextInstancePtr;
- break;
- }
- }
- } else if (menuPtr->nextInstancePtr != NULL) {
- panic("Attempting to delete master menu when there are still clones.");
- }
- /*
- * Free up all the stuff that requires special handling, then
- * let Tk_FreeConfigOptions handle all the standard option-related
- * stuff.
- */
- for (i = menuPtr->numEntries; --i >= 0; ) {
- /*
- * As each menu entry is deleted from the end of the array of
- * entries, decrement menuPtr->numEntries. Otherwise, the act of
- * deleting menu entry i will dereference freed memory attempting
- * to queue a redraw for menu entries (i+1)...numEntries.
- */
-
- DestroyMenuEntry((char *) menuPtr->entries[i]);
- menuPtr->numEntries = i;
- }
- if (menuPtr->entries != NULL) {
- ckfree((char *) menuPtr->entries);
- }
- TkMenuFreeDrawOptions(menuPtr);
- Tk_FreeConfigOptions((char *) menuPtr,
- menuPtr->optionTablesPtr->menuOptionTable, menuPtr->tkwin);
- if (menuPtr->tkwin != NULL) {
- Tk_Window tkwin = menuPtr->tkwin;
- menuPtr->tkwin = NULL;
- Tk_DestroyWindow(tkwin);
- }
- }
- /*
- *----------------------------------------------------------------------
- *
- * TkDestroyMenu --
- *
- * This procedure is invoked by Tcl_EventuallyFree or Tcl_Release
- * to clean up the internal structure of a menu at a safe time
- * (when no-one is using it anymore). If called on a master instance,
- * destroys all of the slave instances. If called on a non-master
- * instance, just destroys that instance.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Everything associated with the menu is freed up.
- *
- *----------------------------------------------------------------------
- */
- void
- TkDestroyMenu(menuPtr)
- TkMenu *menuPtr; /* Info about menu widget. */
- {
- TkMenu *menuInstancePtr;
- TkMenuTopLevelList *topLevelListPtr, *nextTopLevelPtr;
- if (menuPtr->menuFlags & MENU_DELETION_PENDING) {
- return;
- }
- Tcl_Preserve(menuPtr);
-
- /*
- * Now destroy all non-tearoff instances of this menu if this is a
- * parent menu. Is this loop safe enough? Are there going to be
- * destroy bindings on child menus which kill the parent? If not,
- * we have to do a slightly more complex scheme.
- */
- menuPtr->menuFlags |= MENU_DELETION_PENDING;
- if (menuPtr->menuRefPtr != NULL) {
- /*
- * If any toplevel widgets have this menu as their menubar,
- * the geometry of the window may have to be recalculated.
- */
- topLevelListPtr = menuPtr->menuRefPtr->topLevelListPtr;
- while (topLevelListPtr != NULL) {
- nextTopLevelPtr = topLevelListPtr->nextPtr;
- TkpSetWindowMenuBar(topLevelListPtr->tkwin, NULL);
- topLevelListPtr = nextTopLevelPtr;
- }
- }
- if (menuPtr->masterMenuPtr == menuPtr) {
- while (menuPtr->nextInstancePtr != NULL) {
- menuInstancePtr = menuPtr->nextInstancePtr;
- menuPtr->nextInstancePtr = menuInstancePtr->nextInstancePtr;
- if (menuInstancePtr->tkwin != NULL) {
- Tk_Window tkwin = menuInstancePtr->tkwin;
- /*
- * Note: it may be desirable to NULL out the tkwin
- * field of menuInstancePtr here:
- * menuInstancePtr->tkwin = NULL;
- */
- Tk_DestroyWindow(tkwin);
- }
- }
- }
- DestroyMenuInstance(menuPtr);
- Tcl_Release(menuPtr);
- }
- /*
- *----------------------------------------------------------------------
- *
- * UnhookCascadeEntry --
- *
- * This entry is removed from the list of entries that point to the
- * cascade menu. This is done in preparation for changing the menu
- * that this entry points to.
- *
- * At the end of this function, the menu entry no longer contains
- * a reference to a 'TkMenuReferences' structure, and therefore
- * no such structure contains a reference to this menu entry either.
- *
- * Results:
- * None
- *
- * Side effects:
- * The appropriate lists are modified.
- *
- *----------------------------------------------------------------------
- */
- static void
- UnhookCascadeEntry(mePtr)
- TkMenuEntry *mePtr; /* The cascade entry we are removing
- * from the cascade list. */
- {
- TkMenuEntry *cascadeEntryPtr;
- TkMenuEntry *prevCascadePtr;
- TkMenuReferences *menuRefPtr;
- menuRefPtr = mePtr->childMenuRefPtr;
- if (menuRefPtr == NULL) {
- return;
- }
-
- cascadeEntryPtr = menuRefPtr->parentEntryPtr;
- if (cascadeEntryPtr == NULL) {
- TkFreeMenuReferences(menuRefPtr);
- mePtr->childMenuRefPtr = NULL;
- return;
- }
-
- /*
- * Singularly linked list deletion. The two special cases are
- * 1. one element; 2. The first element is the one we want.
- */
- if (cascadeEntryPtr == mePtr) {
- if (cascadeEntryPtr->nextCascadePtr == NULL) {
- /*
- * This is the last menu entry which points to this
- * menu, so we need to clear out the list pointer in the
- * cascade itself.
- */
- menuRefPtr->parentEntryPtr = NULL;
- /*
- * The original field is set to zero below, after it is
- * freed.
- */
- TkFreeMenuReferences(menuRefPtr);
- } else {
- menuRefPtr->parentEntryPtr = cascadeEntryPtr->nextCascadePtr;
- }
- mePtr->nextCascadePtr = NULL;
- } else {
- for (prevCascadePtr = cascadeEntryPtr,
- cascadeEntryPtr = cascadeEntryPtr->nextCascadePtr;
- cascadeEntryPtr != NULL;
- prevCascadePtr = cascadeEntryPtr,
- cascadeEntryPtr = cascadeEntryPtr->nextCascadePtr) {
- if (cascadeEntryPtr == mePtr){
- prevCascadePtr->nextCascadePtr =
- cascadeEntryPtr->nextCascadePtr;
- cascadeEntryPtr->nextCascadePtr = NULL;
- break;
- }
- }
- mePtr->nextCascadePtr = NULL;
- }
- mePtr->childMenuRefPtr = NULL;
- }
- /*
- *----------------------------------------------------------------------
- *
- * DestroyMenuEntry --
- *
- * This procedure is invoked by Tcl_EventuallyFree or Tcl_Release
- * to clean up the internal structure of a menu entry at a safe time
- * (when no-one is using it anymore).
- *
- * Results:
- * None.
- *
- * Side effects:
- * Everything associated with the menu entry is freed.
- *
- *----------------------------------------------------------------------
- */
- static void
- DestroyMenuEntry(memPtr)
- char *memPtr; /* Pointer to entry to be freed. */
- {
- register TkMenuEntry *mePtr = (TkMenuEntry *) memPtr;
- TkMenu *menuPtr = mePtr->menuPtr;
- if (menuPtr->postedCascade == mePtr) {
- /*
- * Ignore errors while unposting the menu, since it's possible
- * that the menu has already been deleted and the unpost will
- * generate an error.
- */
- TkPostSubmenu(menuPtr->interp, menuPtr, (TkMenuEntry *) NULL);
- }
- /*
- * Free up all the stuff that requires special handling, then
- * let Tk_FreeConfigOptions handle all the standard option-related
- * stuff.
- */
- if (mePtr->type == CASCADE_ENTRY) {
- if (menuPtr->masterMenuPtr != menuPtr) {
- TkMenu *destroyThis = NULL;
- /*
- * The menu as a whole is a clone. We must delete the clone
- * of the cascaded menu for the particular entry we are
- * destroying.
- */
- TkMenuReferences *menuRefPtr = mePtr->childMenuRefPtr;
- if (menuRefPtr != NULL) {
- destroyThis = menuRefPtr->menuPtr;
- /*
- * But only if it is a clone. What can happen is that
- * we are in the middle of deleting a menu and this
- * menu pointer has already been reset to point to the
- * original menu. In that case we have nothing special
- * to do.
- */
- if ((destroyThis != NULL)
- && (destroyThis->masterMenuPtr == destroyThis)) {
- destroyThis = NULL;
- }
- }
- UnhookCascadeEntry(mePtr);
- if (menuRefPtr != NULL) {
- if (menuRefPtr->menuPtr == destroyThis) {
- menuRefPtr->menuPtr = NULL;
- }
- if (destroyThis != NULL) {
- TkDestroyMenu(destroyThis);
- }
- }
- } else {
- UnhookCascadeEntry(mePtr);
- }
- }
- if (mePtr->image != NULL) {
- Tk_FreeImage(mePtr->image);
- }
- if (mePtr->selectImage != NULL) {
- Tk_FreeImage(mePtr->selectImage);
- }
- if (((mePtr->type == CHECK_BUTTON_ENTRY)
- || (mePtr->type == RADIO_BUTTON_ENTRY))
- && (mePtr->namePtr != NULL)) {
- char *varName = Tcl_GetStringFromObj(mePtr->namePtr, NULL);
- Tcl_UntraceVar(menuPtr->interp, varName,
- TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
- MenuVarProc, (ClientData) mePtr);
- }
- TkpDestroyMenuEntry(mePtr);
- TkMenuEntryFreeDrawOptions(mePtr);
- Tk_FreeConfigOptions((char *) mePtr, mePtr->optionTable, menuPtr->tkwin);
- ckfree((char *) mePtr);
- }
- /*
- *---------------------------------------------------------------------------
- *
- * MenuWorldChanged --
- *
- * This procedure is called when the world has changed in some
- * way (such as the fonts in the system changing) and the widget needs
- * to recompute all its graphics contexts and determine its new geometry.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Menu will be relayed out and redisplayed.
- *
- *---------------------------------------------------------------------------
- */
- static void
- MenuWorldChanged(instanceData)
- ClientData instanceData; /* Information about widget. */
- {
- TkMenu *menuPtr = (TkMenu *) instanceData;
- int i;
- TkMenuConfigureDrawOptions(menuPtr);
- for (i = 0; i < menuPtr->numEntries; i++) {
- TkMenuConfigureEntryDrawOptions(menuPtr->entries[i],
- menuPtr->entries[i]->index);
- TkpConfigureMenuEntry(menuPtr->entries[i]);
- }
- TkEventuallyRecomputeMenu(menuPtr);
- }
- /*
- *----------------------------------------------------------------------
- *
- * ConfigureMenu --
- *
- * This procedure is called to process an argv/argc list, plus
- * the Tk option database, in order to configure (or
- * reconfigure) a menu widget.
- *
- * 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, font, etc. get set
- * for menuPtr; old resources get freed, if there were any.
- *
- *----------------------------------------------------------------------
- */
- static int
- ConfigureMenu(interp, menuPtr, objc, objv)
- Tcl_Interp *interp; /* Used for error reporting. */
- register TkMenu *menuPtr; /* Information about widget; may or may
- * not already have values for some fields. */
- int objc; /* Number of valid entries in argv. */
- Tcl_Obj *CONST objv[]; /* Arguments. */
- {
- int i;
- TkMenu *menuListPtr, *cleanupPtr;
- int result;
-
- for (menuListPtr = menuPtr->masterMenuPtr; menuListPtr != NULL;
- menuListPtr = menuListPtr->nextInstancePtr) {
- menuListPtr->errorStructPtr = (Tk_SavedOptions *)
- ckalloc(sizeof(Tk_SavedOptions));
- result = Tk_SetOptions(interp, (char *) menuListPtr,
- menuListPtr->optionTablesPtr->menuOptionTable, objc, objv,
- menuListPtr->tkwin, menuListPtr->errorStructPtr, (int *) NULL);
- if (result != TCL_OK) {
- for (cleanupPtr = menuPtr->masterMenuPtr;
- cleanupPtr != menuListPtr;
- cleanupPtr = cleanupPtr->nextInstancePtr) {
- Tk_RestoreSavedOptions(cleanupPtr->errorStructPtr);
- ckfree((char *) cleanupPtr->errorStructPtr);
- cleanupPtr->errorStructPtr = NULL;
- }
- if (menuListPtr->errorStructPtr != NULL) {
- Tk_RestoreSavedOptions(menuListPtr->errorStructPtr);
- ckfree((char *) menuListPtr->errorStructPtr);
- menuListPtr->errorStructPtr = NULL;
- }
- return TCL_ERROR;
- }
- /*
- * When a menu is created, the type is in all of the arguments
- * to the menu command. Let Tk_ConfigureWidget take care of
- * parsing them, and then set the type after we can look at
- * the type string. Once set, a menu's type cannot be changed
- */
-
- if (menuListPtr->menuType == UNKNOWN_TYPE) {
- Tcl_GetIndexFromObj(NULL, menuListPtr->menuTypePtr,
- menuTypeStrings, NULL, 0, &menuListPtr->menuType);
- /*
- * Configure the new window to be either a pop-up menu
- * or a tear-off menu.
- * We don't do this for menubars since they are not toplevel
- * windows. Also, since this gets called before CloneMenu has
- * a chance to set the menuType field, we have to look at the
- * menuTypeName field to tell that this is a menu bar.
- */
-
- if (menuListPtr->menuType == MASTER_MENU) {
- TkpMakeMenuWindow(menuListPtr->tkwin, 1);
- } else if (menuListPtr->menuType == TEAROFF_MENU) {
- TkpMakeMenuWindow(menuListPtr->tkwin, 0);
- }
- }
- /*
- * Depending on the -tearOff option, make sure that there is or
- * isn't an initial tear-off entry at the beginning of the menu.
- */
-
- if (menuListPtr->tearoff) {
- if ((menuListPtr->numEntries == 0)
- || (menuListPtr->entries[0]->type != TEAROFF_ENTRY)) {
- if (MenuNewEntry(menuListPtr, 0, TEAROFF_ENTRY) == NULL) {
- for (cleanupPtr = menuPtr->masterMenuPtr;
- cleanupPtr != menuListPtr;
- cleanupPtr = cleanupPtr->nextInstancePtr) {
- Tk_RestoreSavedOptions(cleanupPtr->errorStructPtr);
- ckfree((char *) cleanupPtr->errorStructPtr);
- cleanupPtr->errorStructPtr = NULL;
- }
- if (menuListPtr->errorStructPtr != NULL) {
- Tk_RestoreSavedOptions(menuListPtr->errorStructPtr);
- ckfree((char *) menuListPtr->errorStructPtr);
- menuListPtr->errorStructPtr = NULL;
- }
- return TCL_ERROR;
- }
- }
- } else if ((menuListPtr->numEntries > 0)
- && (menuListPtr->entries[0]->type == TEAROFF_ENTRY)) {
- int i;
-
- Tcl_EventuallyFree((ClientData) menuListPtr->entries[0],
- DestroyMenuEntry);
- for (i = 0; i < menuListPtr->numEntries - 1; i++) {
- menuListPtr->entries[i] = menuListPtr->entries[i + 1];
- menuListPtr->entries[i]->index = i;
- }
- menuListPtr->numEntries--;
- if (menuListPtr->numEntries == 0) {
- ckfree((char *) menuListPtr->entries);
- menuListPtr->entries = NULL;
- }
- }
- TkMenuConfigureDrawOptions(menuListPtr);
-
- /*
- * After reconfiguring a menu, we need to reconfigure all of the
- * entries in the menu, since some of the things in the children
- * (such as graphics contexts) may have to change to reflect changes
- * in the parent.
- */
-
- for (i = 0; i < menuListPtr->numEntries; i++) {
- TkMenuEntry *mePtr;
-
- mePtr = menuListPtr->entries[i];
- ConfigureMenuEntry(mePtr, 0, (Tcl_Obj **) NULL);
- }
-
- TkEventuallyRecomputeMenu(menuListPtr);
- }
- for (cleanupPtr = menuPtr->masterMenuPtr; cleanupPtr != NULL;
- cleanupPtr = cleanupPtr->nextInstancePtr) {
- Tk_FreeSavedOptions(cleanupPtr->errorStructPtr);
- ckfree((char *) cleanupPtr->errorStructPtr);
- cleanupPtr->errorStructPtr = NULL;
- }
- return TCL_OK;
- }
- /*
- *----------------------------------------------------------------------
- *
- * PostProcessEntry --
- *
- * This is called by ConfigureMenuEntry to do all of the configuration
- * after Tk_SetOptions is called. This is separate
- * so that error handling is easier.
- *
- * 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 label and accelerator get
- * set for mePtr; old resources get freed, if there were any.
- *
- *----------------------------------------------------------------------
- */
- static int
- PostProcessEntry(mePtr)
- TkMenuEntry *mePtr; /* The entry we are configuring. */
- {
- TkMenu *menuPtr = mePtr->menuPtr;
- int index = mePtr->index;
- char *name;
- Tk_Image image;
- /*
- * The code below handles special configuration stuff not taken
- * care of by Tk_ConfigureWidget, such as special processing for
- * defaults, sizing strings, graphics contexts, etc.
- */
- if (mePtr->labelPtr == NULL) {
- mePtr->labelLength = 0;
- } else {
- Tcl_GetStringFromObj(mePtr->labelPtr, &mePtr->labelLength);
- }
- if (mePtr->accelPtr == NULL) {
- mePtr->accelLength = 0;
- } else {
- Tcl_GetStringFromObj(mePtr->accelPtr, &mePtr->accelLength);
- }
- /*
- * If this is a cascade entry, the platform-specific data of the child
- * menu has to be updated. Also, the links that point to parents and
- * cascades have to be updated.
- */
- if ((mePtr->type == CASCADE_ENTRY) && (mePtr->namePtr != NULL)) {
- TkMenuEntry *cascadeEntryPtr;
- int alreadyThere;
- TkMenuReferences *menuRefPtr;
- char *oldHashKey = NULL; /* Initialization only needed to
- * prevent compiler warning. */
- /*
- * This is a cascade entry. If the menu that the cascade entry
- * is pointing to has changed, we need to remove this entry
- * from the list of entries pointing to the old menu, and add a
- * cascade reference to the list of entries pointing to the
- * new menu.
- *
- * BUG: We are not recloning for special case #3 yet.
- */
-
- name = Tcl_GetStringFromObj(mePtr->namePtr, NULL);
- if (mePtr->childMenuRefPtr != NULL) {
- oldHashKey = Tcl_GetHashKey(TkGetMenuHashTable(menuPtr->interp),
- mePtr->childMenuRefPtr->hashEntryPtr);
- if (strcmp(oldHashKey, name) != 0) {
- UnhookCascadeEntry(mePtr);
- }
- }
- if ((mePtr->childMenuRefPtr == NULL)
- || (strcmp(oldHashKey, name) != 0)) {
- menuRefPtr = TkCreateMenuReferences(menuPtr->interp, name);
- mePtr->childMenuRefPtr = menuRefPtr;
- if (menuRefPtr->parentEntryPtr == NULL) {
- menuRefPtr->parentEntryPtr = mePtr;
- } else {
- alreadyThere = 0;
- for (cascadeEntryPtr = menuRefPtr->parentEntryPtr;
- cascadeEntryPtr != NULL;
- cascadeEntryPtr =
- cascadeEntryPtr->nextCascadePtr) {
- if (cascadeEntryPtr == mePtr) {
- alreadyThere = 1;
- break;
- }
- }
-
- /*
- * Put the item at the front of the list.
- */
-
- if (!alreadyThere) {
- mePtr->nextCascadePtr = menuRefPtr->parentEntryPtr;
- menuRefPtr->parentEntryPtr = mePtr;
- }
- }
- }
- }
-
- if (TkMenuConfigureEntryDrawOptions(mePtr, index) != TCL_OK) {
- return TCL_ERROR;
- }
- if (TkpConfigureMenuEntry(mePtr) != TCL_OK) {
- return TCL_ERROR;
- }
-
- /*
- * Get the images for the entry, if there are any. Allocate the
- * new images before freeing the old ones, so that the reference
- * counts don't go to zero and cause image data to be discarded.
- */
- if (mePtr->imagePtr != NULL) {
- char *imageString = Tcl_GetStringFromObj(mePtr->imagePtr, NULL);
- image = Tk_GetImage(menuPtr->interp, menuPtr->tkwin, imageString,
- TkMenuImageProc, (ClientData) mePtr);
- if (image == NULL) {
- return TCL_ERROR;
- }
- } else {
- image = NULL;
- }
- if (mePtr->image != NULL) {
- Tk_FreeImage(mePtr->image);
- }
- mePtr->image = image;
- if (mePtr->selectImagePtr != NULL) {
- char *selectImageString = Tcl_GetStringFromObj(
- mePtr->selectImagePtr, NULL);
- image = Tk_GetImage(menuPtr->interp, menuPtr->tkwin, selectImageString,
- TkMenuSelectImageProc, (ClientData) mePtr);
- if (image == NULL) {
- return TCL_ERROR;
- }
- } else {
- image = NULL;
- }
- if (mePtr->selectImage != NULL) {
- Tk_FreeImage(mePtr->selectImage);
- }
- mePtr->selectImage = image;
- if ((mePtr->type == CHECK_BUTTON_ENTRY)
- || (mePtr->type == RADIO_BUTTON_ENTRY)) {
- Tcl_Obj *valuePtr;
- char *name;
- if (mePtr->namePtr == NULL) {
- if (mePtr->labelPtr == NULL) {
- mePtr->namePtr = NULL;
- } else {
- mePtr->namePtr = Tcl_DuplicateObj(mePtr->labelPtr);
- Tcl_IncrRefCount(mePtr->namePtr);
- }
- }
- if (mePtr->onValuePtr == NULL) {
- if (mePtr->labelPtr == NULL) {
- mePtr->onValuePtr = NULL;
- } else {
- mePtr->onValuePtr = Tcl_DuplicateObj(mePtr->labelPtr);
- Tcl_IncrRefCount(mePtr->onValuePtr);
- }
- }
- /*
- * Select the entry if the associated variable has the
- * appropriate value, initialize the variable if it doesn't
- * exist, then set a trace on the variable to monitor future
- * changes to its value.
- */
-
- if (mePtr->namePtr != NULL) {
- valuePtr = Tcl_ObjGetVar2(menuPtr->interp, mePtr->namePtr, NULL,
- TCL_GLOBAL_ONLY);
- } else {
- valuePtr = NULL;
- }
- mePtr->entryFlags &= ~ENTRY_SELECTED;
- if (valuePtr != NULL) {
- if (mePtr->onValuePtr != NULL) {
- char *value = Tcl_GetStringFromObj(valuePtr, NULL);
- char *onValue = Tcl_GetStringFromObj(mePtr->onValuePtr,
- NULL);
- if (strcmp(value, onValue) == 0) {
- mePtr->entryFlags |= ENTRY_SELECTED;
- }
- }
- } else {
- if (mePtr->namePtr != NULL) {
- Tcl_ObjSetVar2(menuPtr->interp, mePtr->namePtr, NULL,
- (mePtr->type == CHECK_BUTTON_ENTRY)
- ? mePtr->offValuePtr
- : Tcl_NewObj(),
- TCL_GLOBAL_ONLY);
- }
- }
- if (mePtr->namePtr != NULL) {
- name = Tcl_GetStringFromObj(mePtr->namePtr, NULL);
- Tcl_TraceVar(menuPtr->interp, name,
- TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
- MenuVarProc, (ClientData) mePtr);
- }
- }
-
- return TCL_OK;
- }
- /*
- *----------------------------------------------------------------------
- *
- * ConfigureMenuEntry --
- *
- * This procedure is called to process an argv/argc list in order
- * to configure (or reconfigure) one entry in a menu.
- *
- * 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 label and accelerator get
- * set for mePtr; old resources get freed, if there were any.
- *
- *----------------------------------------------------------------------
- */
- static int
- ConfigureMenuEntry(mePtr, objc, objv)
- register TkMenuEntry *mePtr; /* Information about menu entry; may
- * or may not already have values for
- * some fields. */
- int objc; /* Number of valid entries in argv. */
- Tcl_Obj *CONST objv[]; /* Arguments. */
- {
- TkMenu *menuPtr = mePtr->menuPtr;
- Tk_SavedOptions errorStruct;
- int result;
- /*
- * If this entry is a check button or radio button, then remove
- * its old trace procedure.
- */
- if ((mePtr->namePtr != NULL)
- && ((mePtr->type == CHECK_BUTTON_ENTRY)
- || (mePtr->type == RADIO_BUTTON_ENTRY))) {
- char *name = Tcl_GetStringFromObj(mePtr->namePtr, NULL);
- Tcl_UntraceVar(menuPtr->interp, name,
- TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
- MenuVarProc, (ClientData) mePtr);
- }
- result = TCL_OK;
- if (menuPtr->tkwin != NULL) {
- if (Tk_SetOptions(menuPtr->interp, (char *) mePtr,
- mePtr->optionTable, objc, objv, menuPtr->tkwin,
- &errorStruct, (int *) NULL) != TCL_OK) {
- return TCL_ERROR;
- }
- result = PostProcessEntry(mePtr);
- if (result != TCL_OK) {
- Tk_RestoreSavedOptions(&errorStruct);
- PostProcessEntry(mePtr);
- }
- Tk_FreeSavedOptions(&errorStruct);
- }
- TkEventuallyRecomputeMenu(menuPtr);
-
- return result;
- }
- /*
- *----------------------------------------------------------------------
- *
- * ConfigureMenuCloneEntries --
- *
- * Calls ConfigureMenuEntry for each menu in the clone chain.
- *
- * 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 label and accelerator get
- * set for mePtr; old resources get freed, if there were any.
- *
- *----------------------------------------------------------------------
- */
- static int
- ConfigureMenuCloneEntries(interp, menuPtr, index, objc, objv)
- Tcl_Interp *interp; /* Used for error reporting. */
- TkMenu *menuPtr; /* Information about whole menu. */
- int index; /* Index of mePtr within menuPtr's
- * entries. */
- int objc; /* Number of valid entries in argv. */
- Tcl_Obj *CONST objv[]; /* Arguments. */
- {
- TkMenuEntry *mePtr;
- TkMenu *menuListPtr;
- int cascadeEntryChanged = 0;
- TkMenuReferences *oldCascadeMenuRefPtr, *cascadeMenuRefPtr = NULL;
- Tcl_Obj *oldCascadePtr = NULL;
- char *newCascadeName;
- /*
- * Cascades are kind of tricky here. This is special case #3 in the comment
- * at the top of this file. Basically, if a menu is the master menu of a
- * clone chain, and has an entry with a cascade menu, the clones of
- * the menu will point to clones of the cascade menu. We have
- * to destroy the clones of the cascades, clone the new cascade
- * menu, and configure the entry to point to the new clone.
- */
- mePtr = menuPtr->masterMenuPtr->entries[index];
- if (mePtr->type == CASCADE_ENTRY) {
- oldCascadePtr = mePtr->namePtr;
- if (oldCascadePtr != NULL) {
- Tcl_IncrRefCount(oldCascadePtr);
- }
- }
- if (ConfigureMenuEntry(mePtr, objc, objv) != TCL_OK) {
- return TCL_ERROR;
- }
- if (mePtr->type == CASCADE_ENTRY) {
- char *oldCascadeName;
- if (mePtr->namePtr != NULL) {
- newCascadeName = Tcl_GetStringFromObj(mePtr->namePtr, NULL);
- } else {
- newCascadeName = NULL;
- }
-
- if ((oldCascadePtr == NULL) && (mePtr->namePtr == NULL)) {
- cascadeEntryChanged = 0;
- } else if (((oldCascadePtr == NULL) && (mePtr->namePtr != NULL))
- || ((oldCascadePtr != NULL)
- && (mePtr->namePtr == NULL))) {
- cascadeEntryChanged = 1;
- } else {
- oldCascadeName = Tcl_GetStringFromObj(oldCascadePtr,
- NULL);
- cascadeEntryChanged = (strcmp(oldCascadeName, newCascadeName)
- != 0);
- }
- if (oldCascadePtr != NULL) {
- Tcl_DecrRefCount(oldCascadePtr);
- }
- }
- if (cascadeEntryChanged) {
- if (mePtr->namePtr != NULL) {
- newCascadeName = Tcl_GetStringFromObj(mePtr->namePtr, NULL);
- cascadeMenuRefPtr = TkFindMenuReferences(menuPtr->interp,
- newCascadeName);
- }
- }
- for (menuListPtr = menuPtr->masterMenuPtr->nextInstancePtr;
- menuListPtr != NULL;
- menuListPtr = menuListPtr->nextInstancePtr) {
-
- mePtr = menuListPtr->entries[index];
- if (cascadeEntryChanged && (mePtr->namePtr != NULL)) {
- oldCascadeMenuRefPtr = TkFindMenuReferencesObj(menuPtr->interp,
- mePtr->namePtr);
- if ((oldCascadeMenuRefPtr != NULL)
- && (oldCascadeMenuRefPtr->menuPtr != NULL)) {
- RecursivelyDeleteMenu(oldCascadeMenuRefPtr->menuPtr);
- }
- }
- if (ConfigureMenuEntry(mePtr, objc, objv) != TCL_OK) {
- return TCL_ERROR;
- }
-
- if (cascadeEntryChanged && (mePtr->namePtr != NULL)) {
- if (cascadeMenuRefPtr->menuPtr != NULL) {
- Tcl_Obj *newObjv[2];
- Tcl_Obj *newCloneNamePtr;
- Tcl_Obj *pathNamePtr = Tcl_NewStringObj(
- Tk_PathName(menuListPtr->tkwin), -1);
- Tcl_Obj *normalPtr = Tcl_NewStringObj("normal", -1);
- Tcl_Obj *menuObjPtr = Tcl_NewStringObj("-menu", -1);
- Tcl_IncrRefCount(pathNamePtr);
- newCloneNamePtr = TkNewMenuName(menuPtr->interp,
- pathNamePtr,
- cascadeMenuRefPtr->menuPtr);
- Tcl_IncrRefCount(newCloneNamePtr);
- Tcl_IncrRefCount(normalPtr);
- CloneMenu(cascadeMenuRefPtr->menuPtr, newCloneNamePtr,
- normalPtr);
- newObjv[0] = menuObjPtr;
- newObjv[1] = newCloneNamePtr;
- Tcl_IncrRefCount(menuObjPtr);
- ConfigureMenuEntry(mePtr, 2, newObjv);
- Tcl_DecrRefCount(newCloneNamePtr);
- Tcl_DecrRefCount(pathNamePtr);
- Tcl_DecrRefCount(normalPtr);
- Tcl_DecrRefCount(menuObjPtr);
- }
- }
- }
- return TCL_OK;
- }
- /*
- *--------------------------------------------------------------
- *
- * TkGetMenuIndex --
- *
- * Parse a textual index into a menu and return the numerical
- * index of the indicated entry.
- *
- * Results:
- * A standard Tcl result. If all went well, then *indexPtr is
- * filled in with the entry index corresponding to string
- * (ranges from -1 to the number of entries in the menu minus
- * one). Otherwise an error message is left in the interp's result.
- *
- * Side effects:
- * None.
- *
- *--------------------------------------------------------------
- */
- int
- TkGetMenuIndex(interp, menuPtr, objPtr, lastOK, indexPtr)
- Tcl_Interp *interp; /* For error messages. */
- TkMenu *menuPtr; /* Menu for which the index is being
- * specified. */
- Tcl_Obj *objPtr; /* Specification of an entry in menu. See
- * manual entry for valid .*/
- int lastOK; /* Non-zero means its OK to return index
- * just *after* last entry. */
- int *indexPtr; /* Where to store converted index. */
- {
- int i;
- char *string = Tcl_GetStringFromObj(objPtr, NULL);
- if ((string[0] == 'a') && (strcmp(string, "active") == 0)) {
- *indexPtr = menuPtr->active;
- goto success;
- }
- if (((string[0] == 'l') && (strcmp(string, "last") == 0))
- || ((string[0] == 'e') && (strcmp(string, "end") == 0))) {
- *indexPtr = menuPtr->numEntries - ((lastOK) ? 0 : 1);
- goto success;
- }
- if ((string[0] == 'n') && (strcmp(string, "none") == 0)) {
- *indexPtr = -1;
- goto success;
- }
- if (string[0] == '@') {
- if (GetIndexFromCoords(interp, menuPtr, string, indexPtr)
- == TCL_OK) {
- goto success;
- }
- }
- if (isdigit(UCHAR(string[0]))) {
- if (Tcl_GetInt(interp, string, &i) == TCL_OK) {
- if (i >= menuPtr->numEntries) {
- if (lastOK) {
- i = menuPtr->numEntries;
- } else {
- i = menuPtr->numEntries-1;
- }
- } else if (i < 0) {
- i = -1;
- }
- *indexPtr = i;
- goto success;
- }
- Tcl_SetResult(interp, (char *) NULL, TCL_STATIC);
- }
- for (i = 0; i < menuPtr->numEntries; i++) {
- Tcl_Obj *labelPtr = menuPtr->entries[i]->labelPtr;
- char *label = (labelPtr == NULL) ? NULL
- : Tcl_GetStringFromObj(labelPtr, NULL);
-
- if ((label != NULL)
- && (Tcl_StringMatch(label, string))) {
- *indexPtr = i;
- goto success;
- }
- }
- Tcl_AppendResult(interp, "bad menu entry index "",
- string, """, (char *) NULL);
- return TCL_ERROR;
- success:
- return TCL_OK;
- }
- /*
- *----------------------------------------------------------------------
- *
- * MenuCmdDeletedProc --
- *
- * This procedure is invoked when a widget command is deleted. If
- * the widget isn't already in the process of being destroyed,
- * this command destroys it.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The widget is destroyed.
- *
- *----------------------------------------------------------------------
- */
- static void
- MenuCmdDeletedProc(clientData)
- ClientData clientData; /* Pointer to widget record for widget. */
- {
- TkMenu *menuPtr = (TkMenu *) clientData;
- Tk_Window tkwin = menuPtr->tkwin;
- /*
- * This procedure could be invoked either because the window was
- * destroyed and the command was then deleted (in which case tkwin
- * is NULL) or because the command was deleted, and then this procedure
- * destroys the widget.
- */
- if (tkwin != NULL) {
- /*
- * Note: it may be desirable to NULL out the tkwin
- * field of menuPtr here:
- * menuPtr->tkwin = NULL;
- */
- Tk_DestroyWindow(tkwin);
- }
- }
- /*
- *----------------------------------------------------------------------
- *
- * MenuNewEntry --
- *
- * This procedure allocates and initializes a new menu entry.
- *
- * Results:
- * The return value is a pointer to a new menu entry structure,
- * which has been malloc-ed, initialized, and entered into the
- * entry array for the menu.
- *
- * Side effects:
- * Storage gets allocated.
- *
- *----------------------------------------------------------------------
- */
- static TkMenuEntry *
- MenuNewEntry(menuPtr, index, type)
- TkMenu *menuPtr; /* Menu that will hold the new entry. */
- int index; /* Where in the menu the new entry is to
- * go. */
- int type; /* The type of the new entry. */
- {
- TkMenuEntry *mePtr;
- TkMenuEntry **newEntries;
- int i;
- /*
- * Create a new array of entries with an empty slot for the
- * new entry.
- */
- newEntries = (TkMenuEntry **) ckalloc((unsigned)
- ((menuPtr->numEntries+1)*sizeof(TkMenuEntry *)));
- for (i = 0; i < index; i++) {
- newEntries[i] = menuPtr->entries[i];
- }
- for ( ; i < menuPtr->numEntries; i++) {
- newEntries[i+1] = menuPtr->entries[i];
- newEntries[i+1]->index = i + 1;
- }
- if (menuPtr->numEntries != 0) {
- ckfree((char *) menuPtr->entries);
- }
- menuPtr->entries = newEntries;
- menuPtr->numEntries++;
- mePtr = (TkMenuEntry *) ckalloc(sizeof(TkMenuEntry));
- menuPtr->entries[index] = mePtr;
- mePtr->type = type;
- mePtr->optionTable = menuPtr->optionTablesPtr->entryOptionTables[type];
- mePtr->menuPtr = menuPtr;
- mePtr->labelPtr = NULL;
- mePtr->labelLength = 0;
- mePtr->underline = -1;
- mePtr->bitmapPtr = NULL;
- mePtr->imagePtr = NULL;
- mePtr->image = NULL;
- mePtr->selectImagePtr = NULL;
- mePtr->selectImage = NULL;
- mePtr->accelPtr = NULL;
- mePtr->accelLength = 0;
- mePtr->state = ENTRY_DISABLED;
- mePtr->borderPtr = NULL;
- mePtr->fgPtr = NULL;
- mePtr->activeBorderPtr = NULL;
- mePtr->activeFgPtr = NULL;
- mePtr->fontPtr = NULL;
- mePtr->indicatorOn = 0;
- mePtr->indicatorFgPtr = NULL;
- mePtr->columnBreak = 0;
- mePtr->hideMargin = 0;
- mePtr->commandPtr = NULL;
- mePtr->namePtr = NULL;
- mePtr->childMenuRefPtr = NULL;
- mePtr->onValuePtr = NULL;
- mePtr->offValuePtr = NULL;
- mePtr->entryFlags = 0;
- mePtr->index = index;
- mePtr->nextCascadePtr = NULL;
- if (Tk_InitOptions(menuPtr->interp, (char *) mePtr,
- mePtr->optionTable, menuPtr->tkwin) != TCL_OK) {
- ckfree((char *) mePtr);
- return NULL;
- }
- TkMenuInitializeEntryDrawingFields(mePtr);
- if (TkpMenuNewEntry(mePtr) != TCL_OK) {
- Tk_FreeConfigOptions((char *) mePtr, mePtr->optionTable,
- menuPtr->tkwin);
- ckfree((char *) mePtr);
- return NULL;
- }
- return mePtr;
- }
- /*
- *----------------------------------------------------------------------
- *
- * MenuAddOrInsert --
- *
- * This procedure does all of the work of the "add" and "insert"
- * widget commands, allowing the code for these to be shared.
- *
- * Results:
- * A standard Tcl return value.
- *
- * Side effects:
- * A new menu entry is created in menuPtr.
- *
- *----------------------------------------------------------------------
- */
- static int
- MenuAddOrInsert(interp, menuPtr, indexPtr, objc, objv)
- Tcl_Interp *interp; /* Used for error reporting. */
- TkMenu *menuPtr; /* Widget in which to create new
- * entry. */
- Tcl_Obj *indexPtr; /* Object describing index at which
- * to insert. NULL means insert at
- * end. */
- int objc; /* Number of elements in objv. */
- Tcl_Obj *CONST objv[]; /* Arguments to command: first arg
- * is type of entry, others are
- * config options. */
- {
- int type, index;
- TkMenuEntry *mePtr;
- TkMenu *menuListPtr;
- if (indexPtr != NULL) {
- if (TkGetMenuIndex(interp, menuPtr, indexPtr, 1, &index)
- != TCL_OK) {
- return TCL_ERROR;
- }
- } else {
- index = menuPtr->numEntries;
- }
- if (index < 0) {
- char *indexString = Tcl_GetStringFromObj(indexPtr, NULL);
- Tcl_AppendResult(interp, "bad index "", indexString, """,
- (char *) NULL);
- return TCL_ERROR;
- }
- if (menuPtr->tearoff && (index == 0)) {
- index = 1;
- }
- /*
- * Figure out the type of the new entry.
- */
- if (Tcl_GetIndexFromObj(interp, objv[0], menuEntryTypeStrings,
- "menu entry type", 0, &type) != TCL_OK) {
- return TCL_ERROR;
- }
- /*
- * Now we have to add an entry for every instance related to this menu.
- */
- for (menuListPtr = menuPtr->masterMenuPtr; menuListPtr != NULL;
- menuListPtr = menuListPtr->nextInstancePtr) {
-
- mePtr = MenuNewEntry(menuListPtr, index, type);
- if (mePtr == NULL) {
- return TCL_ERROR;
- }
- if (ConfigureMenuEntry(mePtr, objc - 1, objv + 1) != TCL_OK) {
- TkMenu *errorMenuPtr;
- int i;
- for (errorMenuPtr = menuPtr->masterMenuPtr;
- errorMenuPtr != NULL;
- errorMenuPtr = errorMenuPtr->nextInstancePtr) {
- Tcl_EventuallyFree((ClientData) errorMenuPtr->entries[index],
- DestroyMenuEntry);
- for (i = index; i < errorMenuPtr->numEntries - 1; i++) {
- errorMenuPtr->entries[i] = errorMenuPtr->entries[i + 1];
- errorMenuPtr->entries[i]->index = i;
- }
- errorMenuPtr->numEntries--;
- if (errorMenuPtr->numEntries == 0) {
- ckfree((char *) errorMenuPtr->entries);
- errorMenuPtr->entries = NULL;
- }
- if (errorMenuPtr == menuListPtr) {
- break;
- }
- }
- return TCL_ERROR;
- }
-
- /*
- * If a menu has cascades, then every instance of the menu has
- * to have its own parallel cascade structure. So adding an
- * entry to a menu with clones means that the menu that the
- * entry points to has to be cloned for every clone the
- * master menu has. This is special case #2 in the comment
- * at the top of this file.
- */
-
- if ((menuPtr != menuListPtr) && (type == CASCADE_ENTRY)) {
- if ((mePtr->namePtr != NULL)
- && (mePtr->childMenuRefPtr != NULL)
- && (mePtr->childMenuRefPtr->menuPtr != NULL)) {
- TkMenu *cascadeMenuPtr =
- mePtr->childMenuRefPtr->menuPtr->masterMenuPtr;
- Tcl_Obj *newCascadePtr;
- Tcl_Obj *menuNamePtr = Tcl_NewStringObj("-menu", -1);
- Tcl_Obj *windowNamePtr =
- Tcl_NewStringObj(Tk_PathName(menuListPtr->tkwin), -1);
- Tcl_Obj *normalPtr = Tcl_NewStringObj("normal", -1);
- Tcl_Obj *newObjv[2];
- TkMenuReferences *menuRefPtr;
-
- Tcl_IncrRefCount(windowNamePtr);
- newCascadePtr = TkNewMenuName(menuListPtr->interp,
- windowNamePtr, cascadeMenuPtr);
- Tcl_IncrRefCount(newCascadePtr);
- Tcl_IncrRefCount(normalPtr);
- CloneMenu(cascadeMenuPtr, newCascadePtr, normalPtr);
-
- menuRefPtr = TkFindMenuReferencesObj(menuListPtr->interp,
- newCascadePtr);
- if (menuRefPtr == NULL) {
- panic("CloneMenu failed inside of MenuAddOrInsert.");
- }
- newObjv[0] = menuNamePtr;
- newObjv[1] = newCascadePtr;
- Tcl_IncrRefCount(menuNamePtr);
- Tcl_IncrRefCount(newCascadePtr);
- ConfigureMenuEntry(mePtr, 2, newObjv);
- Tcl_DecrRefCount(newCascadePtr);
- Tcl_DecrRefCount(menuNamePtr);
- Tcl_DecrRefCount(windowNamePtr);
- Tcl_DecrRefCount(normalPtr);
- }
- }
- }
- return TCL_OK;
- }
- /*
- *--------------------------------------------------------------
- *
- * MenuVarProc --
- *
- * This procedure is invoked when someone changes the
- * state variable associated with a radiobutton or checkbutton
- * menu entry. The entry's selected state is set to match
- * the value of the variable.
- *
- * Results:
- * NULL is always returned.
- *
- * Side effects:
- * The menu entry may become selected or deselected.
- *
- *--------------------------------------------------------------
- */
- static char *
- MenuVarProc(clientData, interp, name1, name2, flags)
- ClientData clientData; /* Information about menu entry. */
- Tcl_Interp *interp; /* Interpreter containing variable. */
- CONST char *name1; /* First part of variable's name. */
- CONST char *name2; /* Second part of variable's name. */
- int flags; /* Describes what just happened. */
- {
- TkMenuEntry *mePtr = (TkMenuEntry *) clientData;
- TkMenu *menuPtr;
- CONST char *value;
- char *name;
- char *onValue;
- if (flags & TCL_INTERP_DESTROYED) {
- /*
- * Do nothing if the interpreter is going away.
- */
- return (char *) NULL;
- }
- menuPtr = mePtr->menuPtr;
- name = Tcl_GetStringFromObj(mePtr->namePtr, NULL);
- /*
- * If the variable is being unset, then re-establish the trace.
- */
- if (flags & TCL_TRACE_UNSETS) {
- mePtr->entryFlags &= ~ENTRY_SELECTED;
- if (flags & TCL_TRACE_DESTROYED) {
- Tcl_TraceVar(interp, name,
- TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS,
- MenuVarProc, clientData);
- }
- TkpConfigureMenuEntry(mePtr);
- TkEventuallyRedrawMenu(menuPtr, (TkMenuEntry *) NULL);
- return (char *) NULL;
- }
- /*
- * Use the value of the variable to update the selected status of
- * the menu entry.
- */
- value = Tcl_GetVar(interp, name, TCL_GLOBAL_ONLY);
- if (value == NULL) {
- value = "";
- }
- if (mePtr->onValuePtr != NULL) {
- onValue = Tcl_GetStringFromObj(mePtr->onValuePtr, NULL);
- if (strcmp(value, onValue) == 0) {
- if (mePtr->entryFlags & ENTRY_SELECTED) {
- return (char *) NULL;
- }
- mePtr->entryFlags |= ENTRY_SELECTED;
- } else if (mePtr->entryFlags & ENTRY_SELECTED) {
- mePtr->entryFlags &= ~ENTRY_SELECTED;
- } else {
- return (char *) NULL;
- }
- } else {
- return (char *) NULL;
- }
- TkpConfigureMenuEntry(mePtr);
- TkEventuallyRedrawMenu(menuPtr, mePtr);
- return (char *) NULL;
- }
- /*
- *----------------------------------------------------------------------
- *
- * TkActivateMenuEntry --
- *
- * This procedure is invoked to make a particular menu entry
- * the active one, deactivating any other entry that might
- * currently be active.
- *
- * Results:
- * The return value is a standard Tcl result (errors can occur
- * while posting and unposting submenus).
- *
- * Side effects:
- * Menu entries get redisplayed, and the active entry changes.
- * Submenus may get posted and unposted.
- *
- *----------------------------------------------------------------------
- */
- int
- TkActivateMenuEntry(menuPtr, index)
- register TkMenu *menuPtr; /* Menu in which to activate. */
- int index; /* Index of entry to activate, or
- * -1 to deactivate all entries. */
- {
- register TkMenuEntry *mePtr;
- int result = TCL_OK;
- if (menuPtr->active >= 0) {
- mePtr = menuPtr->entries[menuPtr->active];
- /*
- * Don't change the state unless it's currently active (state
- * might already have been changed to disabled).
- */
- if (mePtr->state == ENTRY_ACTIVE) {
- mePtr->state = ENTRY_NORMAL;
- }
- TkEventuallyRedrawMenu(menuPtr, menuPtr->entries[menuPtr->active]);
- }
- menuPtr->active = index;
- if (index >= 0) {
- mePtr = menuPtr->entries[index];
- mePtr->state = ENTRY_ACTIVE;
- TkEventuallyRedrawMenu(menuPtr, mePtr);
- }
- return result;
- }
- /*
- *----------------------------------------------------------------------
- *
- * TkPostCommand --
- *
- * Execute the postcommand for the given menu.
- *
- * Results:
- * The return value is a standard Tcl result (errors can occur
- * while the postcommands are being processed).
- *
- * Side effects:
- * Since commands can get executed while this routine is being executed,
- * the entire world can change.
- *
- *----------------------------------------------------------------------
- */
-
- int
- TkPostCommand(menuPtr)
- TkMenu *menuPtr;
- {
- int result;
- /*
- * If there is a command for the menu, execute it. This
- * may change the size of the menu, so be sure to recompute
- * the menu's geometry if needed.
- */
- if (menuPtr->postCommandPtr != NULL) {
- Tcl_Obj *postCommandPtr = menuPtr->postCommandPtr;
- Tcl_IncrRefCount(postCommandPtr);
- result = Tcl_EvalObjEx(menuPtr->interp, postCommandPtr,
- TCL_EVAL_GLOBAL);
- Tcl_DecrRefCount(postCommandPtr);
- if (result != TCL_OK) {
- return result;
- }
- TkRecomputeMenu(menuPtr);
- }
- return TCL_OK;
- }
- /*
- *--------------------------------------------------------------
- *
- * CloneMenu --
- *
- * Creates a child copy of the menu. It will be inserted into
- * the menu's instance chain. All attributes and entry
- * attributes will be duplicated.
- *
- * Results:
- * A standard Tcl result.
- *
- * Side effects:
- * Allocates storage. After the menu is created, any
- * configuration done with this menu or any related one
- * will be reflected in all of them.
- *
- *--------------------------------------------------------------
- */
- static int
- CloneMenu(menuPtr, newMenuNamePtr, newMenuTypePtr)
- TkMenu *menuPtr; /* The menu we are going to clone */
- Tcl_Obj *newMenuNamePtr; /* The name to give the new menu */
- Tcl_Obj *newMenuTypePtr; /* What kind of menu is this, a normal menu
- * a menubar, or a tearoff? */
- {
- int returnResult;
- int menuType, i;
- TkMenuReferences *menuRefPtr;
- Tcl_Obj *menuDupCommandArray[4];
-
- if (newMenuTypePtr == NULL) {
- menuType = MASTER_MENU;
- } else {
- if (Tcl_GetIndexFromObj(menuPtr->interp, newMenuTypePtr,
- menuTypeStrings, "menu type", 0, &menuType) != TCL_OK) {
- return TCL_ERROR;
- }
- }
- menuDupCommandArray[0] = Tcl_NewStringObj("tk::MenuDup", -1);
- menuDupCommandArray[1] = Tcl_NewStringObj(Tk_PathName(menuPtr->tkwin), -1);
- menuDupCommandArray[2] = newMenuNamePtr;
- if (newMenuTypePtr == NULL) {
- menuDupCommandArray[3] = Tcl_NewStringObj("normal", -1);
- } else {
- menuDupCommandArray[3] = newMenuTypePtr;
- }
- for (i = 0; i < 4; i++) {
- Tcl_IncrRefCount(menuDupCommandArray[i]);
- }
- Tcl_Preserve((ClientData) menuPtr);
- returnResult = Tcl_EvalObjv(menuPtr->interp, 4, menuDupCommandArray, 0);
- for (i = 0; i < 4; i++) {
- Tcl_DecrRefCount(menuDupCommandArray[i]);
- }
- /*
- * Make sure the tcl command actually created the clone.
- */
-
- if ((returnResult == TCL_OK) &&
- ((menuRefPtr = TkFindMenuReferencesObj(menuPtr->interp,
- newMenuNamePtr)) != (TkMenuReferences *) NULL)
- && (menuPtr->numEntries == menuRefPtr->menuPtr->numEntries)) {
- TkMenu *newMenuPtr = menuRefPtr->menuPtr;
- Tcl_Obj *newObjv[3];
- int i, numElements;
- /*
- * Now put this newly created menu into the parent menu's instance
- * chain.
- */
- if (menuPtr->nextInstancePtr == NULL) {
- menuPtr->nextInstancePtr = newMenuPtr;
- newMenuPtr->masterMenuPtr = menuPtr->masterMenuPtr;
- } else {
- TkMenu *masterMenuPtr;
-
- masterMenuPtr = menuPtr->masterMenuPtr;
- newMenuPtr->nextInstancePtr = masterMenuPtr->nextInstancePtr;
- masterMenuPtr->nextInstancePtr = newMenuPtr;
- newMenuPtr->masterMenuPtr = masterMenuPtr;
- }
-
- /*
- * Add the master menu's window to the bind tags for this window
- * after this window's tag. This is so the user can bind to either
- * this clone (which may not be easy to do) or the entire menu
- * clone structure.
- */
-
- newObjv[0] = Tcl_NewStringObj("bindtags", -1);
- newObjv[1] = Tcl_NewStringObj(Tk_PathName(newMenuPtr->tkwin), -1);
- Tcl_IncrRefCount(newObjv[0]);
- Tcl_IncrRefCount(newObjv[1]);
- if (Tk_BindtagsObjCmd((ClientData)newMenuPtr->tkwin,
- newMenuPtr->interp, 2, newObjv) == TCL_OK) {
- char *windowName;
- Tcl_Obj *bindingsPtr =
- Tcl_DuplicateObj(Tcl_GetObjResult(newMenuPtr->interp));
- Tcl_Obj *elementPtr;
-
- Tcl_IncrRefCount(bindingsPtr);
- Tcl_ListObjLength(newMenuPtr->interp, bindingsPtr, &numElements);
- for (i = 0; i < numElements; i++) {
- Tcl_ListObjIndex(newMenuPtr->interp, bindingsPtr, i,
- &elementPtr);
- windowName = Tcl_GetStringFromObj(elementPtr, NULL);
- if (strcmp(windowName, Tk_PathName(newMenuPtr->tkwin))
- == 0) {
- Tcl_Obj *newElementPtr = Tcl_NewStringObj(
- Tk_PathName(newMenuPtr->masterMenuPtr->tkwin), -1);
- /*
- * The newElementPtr will have its refCount incremented
- * here, so we don't need to worry about it any more.
- */
- Tcl_ListObjReplace(menuPtr->interp, bindingsPtr,
- i + 1, 0, 1, &newElementPtr);
- newObjv[2] = bindingsPtr;
- Tk_BindtagsObjCmd((ClientData)newMenuPtr->tkwin,
- menuPtr->interp, 3, newObjv);
- break;
- }
- }
- Tcl_DecrRefCount(bindingsPtr);
- }
- Tcl_DecrRefCount(newObjv[0]);
- Tcl_DecrRefCount(newObjv[1]);
- Tcl_ResetResult(menuPtr->interp);
-
- /*
- * Clone all of the cascade menus that this menu points to.
- */
-
- for (i = 0; i < menuPtr->numEntries; i++) {
- TkMenuReferences *cascadeRefPtr;
- TkMenu *oldCascadePtr;
-
- if ((menuPtr->entries[i]->type == CASCADE_ENTRY)
- && (menuPtr->entries[i]->namePtr != NULL)) {
- cascadeRefPtr =
- TkFindMenuReferencesObj(menuPtr->interp,
- menuPtr->entries[i]->namePtr);
- if ((cascadeRefPtr != NULL) && (cascadeRefPtr->menuPtr)) {
- Tcl_Obj *windowNamePtr =
- Tcl_NewStringObj(Tk_PathName(newMenuPtr->tkwin),
- -1);
- Tcl_Obj *newCascadePtr;
-
- oldCascadePtr = cascadeRefPtr->menuPtr;
- Tcl_IncrRefCount(windowNamePtr);
- newCascadePtr = TkNewMenuName(menuPtr->interp,
- windowNamePtr, oldCascadePtr);
- Tcl_IncrRefCount(newCascadePtr);
- CloneMenu(oldCascadePtr, newCascadePtr, NULL);
- newObjv[0] = Tcl_NewStringObj("-menu", -1);
- newObjv[1] = newCascadePtr;
- Tcl_IncrRefCount(newObjv[0]);
- ConfigureMenuEntry(newMenuPtr->entries[i], 2, newObjv);
- Tcl_DecrRefCount(newObjv[0]);
- Tcl_DecrRefCount(newCascadePtr);
- Tcl_DecrRefCount(windowNamePtr);
- }
- }
- }
-
- returnResult = TCL_OK;
- } else {
- returnResult = TCL_ERROR;
- }
- Tcl_Release((ClientData) menuPtr);
- return returnResult;
- }
- /*
- *----------------------------------------------------------------------
- *
- * MenuDoYPosition --
- *
- * Given arguments from an option command line, returns the Y position.
- *
- * Results:
- * Returns TCL_OK or TCL_Error
- *
- * Side effects:
- * yPosition is set to the Y-position of the menu entry.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- MenuDoYPosition(interp, menuPtr, objPtr)
- Tcl_Interp *interp;
- TkMenu *menuPtr;
- Tcl_Obj *objPtr;
- {
- int index;
-
- TkRecomputeMenu(menuPtr);
- if (TkGetMenuIndex(interp, menuPtr, objPtr, 0, &index) != TCL_OK) {
- goto error;
- }
- Tcl_ResetResult(interp);
- if (index < 0) {
- Tcl_SetObjResult(interp, Tcl_NewIntObj(0));
- } else {
- Tcl_SetObjResult(interp, Tcl_NewIntObj(menuPtr->entries[index]->y));
- }
- return TCL_OK;
-
- error:
- return TCL_ERROR;
- }
- /*
- *----------------------------------------------------------------------
- *
- * GetIndexFromCoords --
- *
- * Given a string of the form "@int", return the menu item corresponding
- * to int.
- *
- * Results:
- * If int is a valid number, *indexPtr will be the number of the menuentry
- * that is the correct height. If int is invaled, *indexPtr will be
- * unchanged. Returns appropriate Tcl error number.
- *
- * Side effects:
- * If int is invalid, interp's result will set to NULL.
- *
- *----------------------------------------------------------------------
- */
- static int
- GetIndexFromCoords(interp, menuPtr, string, indexPtr)
- Tcl_Interp *interp; /* interp of menu */
- TkMenu *menuPtr; /* the menu we are searching */
- char *string; /* The @string we are parsing */
- int *indexPtr; /* The index of the item that matches */
- {
- int x, y, i;
- char *p, *end;
-
- TkRecomputeMenu(menuPtr);
- p = string + 1;
- y = strtol(p, &end, 0);
- if (end == p) {
- goto error;
- }
- if (*end == ',') {
- x = y;
- p = end + 1;
- y = strtol(p, &end, 0);
- if (end == p) {
- goto error;
- }
- } else {
- Tk_GetPixelsFromObj(interp, menuPtr->tkwin,
- menuPtr->borderWidthPtr, &x);
- }
-
- for (i = 0; i < menuPtr->numEntries; i++) {
- if ((x >= menuPtr->entries[i]->x) && (y >= menuPtr->entries[i]->y)
- && (x < (menuPtr->entries[i]->x + menuPtr->entries[i]->width))
- && (y < (menuPtr->entries[i]->y
- + menuPtr->entries[i]->height))) {
- break;
- }
- }
- if (i >= menuPtr->numEntries) {
- /* i = menuPtr->numEntries - 1; */
- i = -1;
- }
- *indexPtr = i;
- return TCL_OK;
- error:
- Tcl_SetResult(interp, (char *) NULL, TCL_STATIC);
- return TCL_ERROR;
- }
- /*
- *----------------------------------------------------------------------
- *
- * RecursivelyDeleteMenu --
- *
- * Deletes a menu and any cascades underneath it. Used for deleting
- * instances when a menu is no longer being used as a menubar,
- * for instance.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Destroys the menu and all cascade menus underneath it.
- *
- *----------------------------------------------------------------------
- */
- static void
- RecursivelyDeleteMenu(menuPtr)
- TkMenu *menuPtr; /* The menubar instance we are deleting */
- {
- int i;
- TkMenuEntry *mePtr;
-
- /*
- * It is not 100% clear that this preserve/release pair is
- * required, but we have added them for safety in this
- * very complex code.
- */
- Tcl_Preserve(menuPtr);
-
- for (i = 0; i < menuPtr->numEntries; i++) {
- mePtr = menuPtr->entries[i];
- if ((mePtr->type == CASCADE_ENTRY)
- && (mePtr->childMenuRefPtr != NULL)
- && (mePtr->childMenuRefPtr->menuPtr != NULL)) {
- RecursivelyDeleteMenu(mePtr->childMenuRefPtr->menuPtr);
- }
- }
- if (menuPtr->tkwin != NULL) {
- Tk_DestroyWindow(menuPtr->tkwin);
- }
-
- Tcl_Release(menuPtr);
- }
- /*
- *----------------------------------------------------------------------
- *
- * TkNewMenuName --
- *
- * Makes a new unique name for a cloned menu. Will be a child
- * of oldName.
- *
- * Results:
- * Returns a char * which has been allocated; caller must free.
- *
- * Side effects:
- * Memory is allocated.
- *
- *----------------------------------------------------------------------
- */
- Tcl_Obj *
- TkNewMenuName(interp, parentPtr, menuPtr)
- Tcl_Interp *interp; /* The interp the new name has to live in.*/
- Tcl_Obj *parentPtr; /* The prefix path of the new name. */
- TkMenu *menuPtr; /* The menu we are cloning. */
- {
- Tcl_Obj *resultPtr = NULL; /* Initialization needed only to prevent
- * compiler warning. */
- Tcl_Obj *childPtr;
- char *destString;
- int i;
- int doDot;
- Tcl_CmdInfo cmdInfo;
- Tcl_HashTable *nameTablePtr = NULL;
- TkWindow *winPtr = (TkWindow *) menuPtr->tkwin;
- char *parentName = Tcl_GetStringFromObj(parentPtr, NULL);
- if (winPtr->mainPtr != NULL) {
- nameTablePtr = &(winPtr->mainPtr->nameTable);
- }
- doDot = parentName[strlen(parentName) - 1] != '.';
- childPtr = Tcl_NewStringObj(Tk_PathName(menuPtr->tkwin), -1);
- for (destString = Tcl_GetStringFromObj(childPtr, NULL);
- *destString != ' '; destString++) {
- if (*destString == '.') {
- *destString = '#';
- }
- }
-
- for (i = 0; ; i++) {
- if (i == 0) {
- resultPtr = Tcl_DuplicateObj(parentPtr);
- if (doDot) {
- Tcl_AppendToObj(resultPtr, ".", -1);
- }
- Tcl_AppendObjToObj(resultPtr, childPtr);
- } else {
- Tcl_Obj *intPtr;
- Tcl_DecrRefCount(resultPtr);
- resultPtr = Tcl_DuplicateObj(parentPtr);
- if (doDot) {
- Tcl_AppendToObj(resultPtr, ".", -1);
- }
- Tcl_AppendObjToObj(resultPtr, childPtr);
- intPtr = Tcl_NewIntObj(i);
- Tcl_AppendObjToObj(resultPtr, intPtr);
- Tcl_DecrRefCount(intPtr);
- }
- destString = Tcl_GetStringFromObj(resultPtr, NULL);
- if ((Tcl_GetCommandInfo(interp, destString, &cmdInfo) == 0)
- && ((nameTablePtr == NULL)
- || (Tcl_FindHashEntry(nameTablePtr, destString) == NULL))) {
- break;
- }
- }
- Tcl_DecrRefCount(childPtr);
- return resultPtr;
- }
- /*
- *----------------------------------------------------------------------
- *
- * TkSetWindowMenuBar --
- *
- * Associates a menu with a window. Called by ConfigureFrame in
- * in response to a "-menu .foo" configuration option for a top
- * level.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The old menu clones for the menubar are thrown away, and a
- * handler is set up to allocate the new ones.
- *
- *----------------------------------------------------------------------
- */
- void
- TkSetWindowMenuBar(interp, tkwin, oldMenuName, menuName)
- Tcl_Interp *interp; /* The interpreter the toplevel lives in. */
- Tk_Window tkwin; /* The toplevel window */
- char *oldMenuName; /* The name of the menubar previously set in
- * this toplevel. NULL means no menu was
- * set previously. */
- char *menuName; /* The name of the new menubar that the
- * toplevel needs to be set to. NULL means
- * that their is no menu now. */
- {
- TkMenuTopLevelList *topLevelListPtr, *prevTopLevelPtr;
- TkMenu *menuPtr;
- TkMenuReferences *menuRefPtr;
-
- TkMenuInit();
- /*
- * Destroy the menubar instances of the old menu. Take this window
- * out of the old menu's top level reference list.
- */
-
- if (oldMenuName != NULL) {
- menuRefPtr = TkFindMenuReferences(interp, oldMenuName);
- if (menuRefPtr != NULL) {
- /*
- * Find the menubar instance that is to be removed. Destroy
- * it and all of the cascades underneath it.
- */
- if (menuRefPtr->menuPtr != NULL) {
- TkMenu *instancePtr;
- menuPtr = menuRefPtr->menuPtr;
-
- for (instancePtr = menuPtr->masterMenuPtr;
- instancePtr != NULL;
- instancePtr = instancePtr->nextInstancePtr) {
- if (instancePtr->menuType == MENUBAR
- && instancePtr->parentTopLevelPtr == tkwin) {
- RecursivelyDeleteMenu(instancePtr);
- break;
- }
- }
- }
-
- /*
- * Now we need to remove this toplevel from the list of toplevels
- * that reference this menu.
- */
-
- topLevelListPtr = menuRefPtr->topLevelListPtr;
- prevTopLevelPtr = NULL;
-
- while ((topLevelListPtr != NULL)
- && (topLevelListPtr->tkwin != tkwin)) {
- prevTopLevelPtr = topLevelListPtr;
- topLevelListPtr = topLevelListPtr->nextPtr;
- }
- /*
- * Now we have found the toplevel reference that matches the
- * tkwin; remove this reference from the list.
- */
- if (topLevelListPtr != NULL) {
- if (prevTopLevelPtr == NULL) {
- menuRefPtr->topLevelListPtr =
- menuRefPtr->topLevelListPtr->nextPtr;
- } else {
- prevTopLevelPtr->nextPtr = topLevelListPtr->nextPtr;
- }
- ckfree((char *) topLevelListPtr);
- TkFreeMenuReferences(menuRefPtr);
- }
- }
- }
- /*
- * Now, add the clone references for the new menu.
- */
-
- if (menuName != NULL && menuName[0] != 0) {
- TkMenu *menuBarPtr = NULL;
- menuRefPtr = TkCreateMenuReferences(interp, menuName);
-
- menuPtr = menuRefPtr->menuPtr;
- if (menuPtr != NULL) {
- Tcl_Obj *cloneMenuPtr;
- TkMenuReferences *cloneMenuRefPtr;
- Tcl_Obj *newObjv[4];
- Tcl_Obj *windowNamePtr = Tcl_NewStringObj(Tk_PathName(tkwin),
- -1);
- Tcl_Obj *menubarPtr = Tcl_NewStringObj("menubar", -1);
-
- /*
- * Clone the menu and all of the cascades underneath it.
- */
- Tcl_IncrRefCount(windowNamePtr);
- cloneMenuPtr = TkNewMenuName(interp, windowNamePtr,
- menuPtr);
- Tcl_IncrRefCount(cloneMenuPtr);
- Tcl_IncrRefCount(menubarPtr);
- CloneMenu(menuPtr, cloneMenuPtr, menubarPtr);
-
- cloneMenuRefPtr = TkFindMenuReferencesObj(interp, cloneMenuPtr);
- if ((cloneMenuRefPtr != NULL)
- && (cloneMenuRefPtr->menuPtr != NULL)) {
- Tcl_Obj *cursorPtr = Tcl_NewStringObj("-cursor", -1);
- Tcl_Obj *nullPtr = Tcl_NewObj();
- cloneMenuRefPtr->menuPtr->parentTopLevelPtr = tkwin;
- menuBarPtr = cloneMenuRefPtr->menuPtr;
- newObjv[0] = cursorPtr;
- newObjv[1] = nullPtr;
- Tcl_IncrRefCount(cursorPtr);
- Tcl_IncrRefCount(nullPtr);
- ConfigureMenu(menuPtr->interp, cloneMenuRefPtr->menuPtr,
- 2, newObjv);
- Tcl_DecrRefCount(cursorPtr);
- Tcl_DecrRefCount(nullPtr);
- }
- TkpSetWindowMenuBar(tkwin, menuBarPtr);
- Tcl_DecrRefCount(cloneMenuPtr);
- Tcl_DecrRefCount(menubarPtr);
- Tcl_DecrRefCount(windowNamePtr);
- } else {
- TkpSetWindowMenuBar(tkwin, NULL);
- }
-
- /*
- * Add this window to the menu's list of windows that refer
- * to this menu.
- */
- topLevelListPtr = (TkMenuTopLevelList *)
- ckalloc(sizeof(TkMenuTopLevelList));
- topLevelListPtr->tkwin = tkwin;
- topLevelListPtr->nextPtr = menuRefPtr->topLevelListPtr;
- menuRefPtr->topLevelListPtr = topLevelListPtr;
- } else {
- TkpSetWindowMenuBar(tkwin, NULL);
- }
- TkpSetMainMenubar(interp, tkwin, menuName);
- }
- /*
- *----------------------------------------------------------------------
- *
- * DestroyMenuHashTable --
- *
- * Called when an interp is deleted and a menu hash table has
- * been set in it.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The hash table is destroyed.
- *
- *----------------------------------------------------------------------
- */
- static void
- DestroyMenuHashTable(clientData, interp)
- ClientData clientData; /* The menu hash table we are destroying */
- Tcl_Interp *interp; /* The interpreter we are destroying */
- {
- Tcl_DeleteHashTable((Tcl_HashTable *) clientData);
- ckfree((char *) clientData);
- }
- /*
- *----------------------------------------------------------------------
- *
- * TkGetMenuHashTable --
- *
- * For a given interp, give back the menu hash table that goes with
- * it. If the hash table does not exist, it is created.
- *
- * Results:
- * Returns a hash table pointer.
- *
- * Side effects:
- * A new hash table is created if there were no table in the interp
- * originally.
- *
- *----------------------------------------------------------------------
- */
- Tcl_HashTable *
- TkGetMenuHashTable(interp)
- Tcl_Interp *interp; /* The interp we need the hash table in.*/
- {
- Tcl_HashTable *menuTablePtr;
- menuTablePtr = (Tcl_HashTable *) Tcl_GetAssocData(interp, MENU_HASH_KEY,
- NULL);
- if (menuTablePtr == NULL) {
- menuTablePtr = (Tcl_HashTable *) ckalloc(sizeof(Tcl_HashTable));
- Tcl_InitHashTable(menuTablePtr, TCL_STRING_KEYS);
- Tcl_SetAssocData(interp, MENU_HASH_KEY, DestroyMenuHashTable,
- (ClientData) menuTablePtr);
- }
- return menuTablePtr;
- }
- /*
- *----------------------------------------------------------------------
- *
- * TkCreateMenuReferences --
- *
- * Given a pathname, gives back a pointer to a TkMenuReferences structure.
- * If a reference is not already in the hash table, one is created.
- *
- * Results:
- * Returns a pointer to a menu reference structure. Should not
- * be freed by calller; when a field of the reference is cleared,
- * TkFreeMenuReferences should be called.
- *
- * Side effects:
- * A new hash table entry is created if there were no references
- * to the menu originally.
- *
- *----------------------------------------------------------------------
- */
- TkMenuReferences *
- TkCreateMenuReferences(interp, pathName)
- Tcl_Interp *interp;
- char *pathName; /* The path of the menu widget */
- {
- Tcl_HashEntry *hashEntryPtr;
- TkMenuReferences *menuRefPtr;
- int newEntry;
- Tcl_HashTable *menuTablePtr = TkGetMenuHashTable(interp);
- hashEntryPtr = Tcl_CreateHashEntry(menuTablePtr, pathName, &newEntry);
- if (newEntry) {
- menuRefPtr = (TkMenuReferences *) ckalloc(sizeof(TkMenuReferences));
- menuRefPtr->menuPtr = NULL;
- menuRefPtr->topLevelListPtr = NULL;
- menuRefPtr->parentEntryPtr = NULL;
- menuRefPtr->hashEntryPtr = hashEntryPtr;
- Tcl_SetHashValue(hashEntryPtr, (char *) menuRefPtr);
- } else {
- menuRefPtr = (TkMenuReferences *) Tcl_GetHashValue(hashEntryPtr);
- }
- return menuRefPtr;
- }
- /*
- *----------------------------------------------------------------------
- *
- * TkFindMenuReferences --
- *
- * Given a pathname, gives back a pointer to the TkMenuReferences
- * structure.
- *
- * Results:
- * Returns a pointer to a menu reference structure. Should not
- * be freed by calller; when a field of the reference is cleared,
- * TkFreeMenuReferences should be called. Returns NULL if no reference
- * with this pathname exists.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
- TkMenuReferences *
- TkFindMenuReferences(interp, pathName)
- Tcl_Interp *interp; /* The interp the menu is living in. */
- char *pathName; /* The path of the menu widget */
- {
- Tcl_HashEntry *hashEntryPtr;
- TkMenuReferences *menuRefPtr = NULL;
- Tcl_HashTable *menuTablePtr;
- menuTablePtr = TkGetMenuHashTable(interp);
- hashEntryPtr = Tcl_FindHashEntry(menuTablePtr, pathName);
- if (hashEntryPtr != NULL) {
- menuRefPtr = (TkMenuReferences *) Tcl_GetHashValue(hashEntryPtr);
- }
- return menuRefPtr;
- }
- /*
- *----------------------------------------------------------------------
- *
- * TkFindMenuReferencesObj --
- *
- * Given a pathname, gives back a pointer to the TkMenuReferences
- * structure.
- *
- * Results:
- * Returns a pointer to a menu reference structure. Should not
- * be freed by calller; when a field of the reference is cleared,
- * TkFreeMenuReferences should be called. Returns NULL if no reference
- * with this pathname exists.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
- TkMenuReferences *
- TkFindMenuReferencesObj(interp, objPtr)
- Tcl_Interp *interp; /* The interp the menu is living in. */
- Tcl_Obj *objPtr; /* The path of the menu widget */
- {
- char *pathName = Tcl_GetStringFromObj(objPtr, NULL);
- return TkFindMenuReferences(interp, pathName);
- }
- /*
- *----------------------------------------------------------------------
- *
- * TkFreeMenuReferences --
- *
- * This is called after one of the fields in a menu reference
- * is cleared. It cleans up the ref if it is now empty.
- *
- * Results:
- * Returns 1 if the references structure was freed, and 0
- * otherwise.
- *
- * Side effects:
- * If this is the last field to be cleared, the menu ref is
- * taken out of the hash table.
- *
- *----------------------------------------------------------------------
- */
- int
- TkFreeMenuReferences(menuRefPtr)
- TkMenuReferences *menuRefPtr; /* The menu reference to
- * free */
- {
- if ((menuRefPtr->menuPtr == NULL)
- && (menuRefPtr->parentEntryPtr == NULL)
- && (menuRefPtr->topLevelListPtr == NULL)) {
- Tcl_DeleteHashEntry(menuRefPtr->hashEntryPtr);
- ckfree((char *) menuRefPtr);
- return 1;
- }
- return 0;
- }
- /*
- *----------------------------------------------------------------------
- *
- * DeleteMenuCloneEntries --
- *
- * For every clone in this clone chain, delete the menu entries
- * given by the parameters.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The appropriate entries are deleted from all clones of this menu.
- *
- *----------------------------------------------------------------------
- */
- static void
- DeleteMenuCloneEntries(menuPtr, first, last)
- TkMenu *menuPtr; /* the menu the command was issued with */
- int first; /* the zero-based first entry in the set
- * of entries to delete. */
- int last; /* the zero-based last entry */
- {
- TkMenu *menuListPtr;
- int numDeleted, i, j;
- numDeleted = last + 1 - first;
- for (menuListPtr = menuPtr->masterMenuPtr; menuListPtr != NULL;
- menuListPtr = menuListPtr->nextInstancePtr) {
- for (i = last; i >= first; i--) {
- Tcl_EventuallyFree((ClientData) menuListPtr->entries[i],
- DestroyMenuEntry);
- }
- for (i = last + 1; i < menuListPtr->numEntries; i++) {
- j = i - numDeleted;
- menuListPtr->entries[j] = menuListPtr->entries[i];
- menuListPtr->entries[j]->index = j;
- }
- menuListPtr->numEntries -= numDeleted;
- if (menuListPtr->numEntries == 0) {
- ckfree((char *) menuListPtr->entries);
- menuListPtr->entries = NULL;
- }
- if ((menuListPtr->active >= first)
- && (menuListPtr->active <= last)) {
- menuListPtr->active = -1;
- } else if (menuListPtr->active > last) {
- menuListPtr->active -= numDeleted;
- }
- TkEventuallyRecomputeMenu(menuListPtr);
- }
- }
- /*
- *----------------------------------------------------------------------
- *
- * TkMenuCleanup --
- *
- * Resets menusInitialized to allow Tk to be finalized and reused
- * without the DLL being unloaded.
- *
- * Results:
- * None.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
- static void
- TkMenuCleanup(ClientData unused)
- {
- menusInitialized = 0;
- }
- /*
- *----------------------------------------------------------------------
- *
- * TkMenuInit --
- *
- * Sets up the hash tables and the variables used by the menu package.
- *
- * Results:
- * None.
- *
- * Side effects:
- * lastMenuID gets initialized, and the parent hash and the command hash
- * are allocated.
- *
- *----------------------------------------------------------------------
- */
- void
- TkMenuInit()
- {
- ThreadSpecificData *tsdPtr = (ThreadSpecificData *)
- Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
-
- if (!menusInitialized) {
- Tcl_MutexLock(&menuMutex);
- if (!menusInitialized) {
- TkpMenuInit();
- menusInitialized = 1;
- }
- /*
- * Make sure we cleanup on finalize.
- */
- TkCreateExitHandler(TkMenuCleanup, NULL);
- Tcl_MutexUnlock(&menuMutex);
- }
- if (!tsdPtr->menusInitialized) {
- TkpMenuThreadInit();
- tsdPtr->menusInitialized = 1;
- }
- }