/* * 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 1.20.2.3 2004/09/16 20:05:44 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 }; 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} }; 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} }; 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} }; 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} }; 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} }; 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}; 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 void TkMenuCleanup _ANSI_ARGS_((ClientData unused)); /* * 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)); 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->entries = NULL; menuPtr->numEntries = 0; menuPtr->active = -1; menuPtr->borderPtr = NULL; menuPtr->borderWidthPtr = NULL; menuPtr->reliefPtr = NULL; menuPtr->activeBorderPtr = NULL; menuPtr->activeBorderWidthPtr = NULL; menuPtr->fontPtr = NULL; menuPtr->fgPtr = NULL; menuPtr->disabledFgPtr = NULL; menuPtr->activeFgPtr = NULL; menuPtr->indicatorFgPtr = NULL; menuPtr->tearoff = 0; menuPtr->tearoffCommandPtr = NULL; menuPtr->cursorPtr = None; menuPtr->takeFocusPtr = NULL; menuPtr->postCommandPtr = NULL; menuPtr->postCommandGeneration = 0; menuPtr->postedCascade = NULL; menuPtr->nextInstancePtr = NULL; menuPtr->masterMenuPtr = menuPtr; menuPtr->menuType = UNKNOWN_TYPE; menuPtr->menuFlags = 0; menuPtr->parentTopLevelPtr = NULL; menuPtr->menuTypePtr = NULL; menuPtr->titlePtr = NULL; menuPtr->errorStructPtr = NULL; menuPtr->optionTablesPtr = optionTablesPtr; TkMenuInitializeDrawingFields(menuPtr); Tk_SetClass(menuPtr->tkwin, "Menu"); Tk_SetClassProcs(menuPtr->tkwin, &menuClass, (ClientData) menuPtr); if (Tk_InitOptions(interp, (char *) menuPtr, menuPtr->optionTablesPtr->menuOptionTable, menuPtr->tkwin) != TCL_OK) { Tk_DestroyWindow(menuPtr->tkwin); ckfree((char *) menuPtr); 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); ckfree((char *) menuPtr); return TCL_ERROR; } Tk_CreateEventHandler(new, ExposureMask|StructureNotifyMask|ActivateMask, TkMenuEventProc, (ClientData) menuPtr); 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); 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 != '\0'; 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; 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++) { menuListPtr->entries[i - numDeleted] = menuListPtr->entries[i]; menuListPtr->entries[i - numDeleted]->index = i - numDeleted; } 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. */ Tcl_CreateExitHandler((Tcl_ExitProc *) TkMenuCleanup, NULL); Tcl_MutexUnlock(&menuMutex); } if (!tsdPtr->menusInitialized) { TkpMenuThreadInit(); tsdPtr->menusInitialized = 1; } }