/* * tkMenu.c -- * * This module implements menus for the Tk toolkit. The menus * support normal button entries, plus check buttons, radio * buttons, iconic forms of all of the above, and separator * entries. * * Copyright 1990-1992 Regents of the University of California. * Permission to use, copy, modify, and distribute this * software and its documentation for any purpose and without * fee is hereby granted, provided that the above copyright * notice appear in all copies. The University of California * makes no representations about the suitability of this * software for any purpose. It is provided "as is" without * express or implied warranty. */ #ifndef lint static char rcsid[] = "$Header: /user6/ouster/wish/RCS/tkMenu.c,v 1.46 93/01/28 16:00:32 ouster Exp $ SPRITE (Berkeley)"; #endif #include "tkConfig.h" #include "default.h" #include "tkInt.h" /* * One of the following data structures is kept for each entry of each * menu managed by this file: */ typedef struct MenuEntry { int type; /* Type of menu entry; see below for * valid types. */ struct Menu *menuPtr; /* Menu with which this entry is associated. */ char *label; /* Main text label displayed in entry (NULL * if no label). Malloc'ed. */ int labelLength; /* Number of non-NULL characters in label. */ int underline; /* Index of character to underline. */ Pixmap bitmap; /* Bitmap to display in menu entry, or None. * If not None then label is ignored. */ char *accel; /* Accelerator string displayed at right * of menu entry. NULL means no such * accelerator. Malloc'ed. */ int accelLength; /* Number of non-NULL characters in * accelerator. */ /* * Information related to displaying entry: */ Tk_Uid state; /* State of button for display purposes: * normal, active, or disabled. */ int height; /* Number of pixels occupied by entry in * vertical dimension. */ int y; /* Y-coordinate of topmost pixel in entry. */ int selectorDiameter; /* Size of selector display, in pixels. */ Tk_3DBorder border; /* Structure used to draw background for * entry. NULL means use overall border * for menu. */ Tk_3DBorder activeBorder; /* Used to draw background and border when * element is active. NULL means use * activeBorder from menu. */ XFontStruct *fontPtr; /* Text font for menu entries. NULL means * use overall font for menu. */ GC textGC; /* GC for drawing text in entry. NULL means * use overall textGC for menu. */ GC activeGC; /* GC for drawing text in entry when active. * NULL means use overall activeGC for * menu. */ GC disabledGC; /* Used to produce disabled effect for entry. * NULL means use overall disabledGC from * menu structure. See comments for * disabledFg in menu structure for more * information. */ /* * Information used to implement this entry's action: */ char *command; /* Command to invoke when entry is invoked. * Malloc'ed. */ char *name; /* Name of variable (for check buttons and * radio buttons) or menu (for cascade * entries). Malloc'ed.*/ char *onValue; /* Value to store in variable when selected * (only for radio and check buttons). * Malloc'ed. */ char *offValue; /* Value to store in variable when not * selected (only for check buttons). * Malloc'ed. */ /* * Miscellaneous information: */ int flags; /* Various flags. See below for definitions. */ } MenuEntry; /* * Flag values defined for menu entries: * * ENTRY_SELECTED: Non-zero means this is a radio or check * button and that it should be drawn in * the "selected" state. * ENTRY_NEEDS_REDISPLAY: Non-zero means the entry should be redisplayed. */ #define ENTRY_SELECTED 1 #define ENTRY_NEEDS_REDISPLAY 4 /* * Types defined for MenuEntries: */ #define COMMAND_ENTRY 0 #define SEPARATOR_ENTRY 1 #define CHECK_BUTTON_ENTRY 2 #define RADIO_BUTTON_ENTRY 3 #define CASCADE_ENTRY 4 /* * Mask bits for above types: */ #define COMMAND_MASK TK_CONFIG_USER_BIT #define SEPARATOR_MASK (TK_CONFIG_USER_BIT << 1) #define CHECK_BUTTON_MASK (TK_CONFIG_USER_BIT << 2) #define RADIO_BUTTON_MASK (TK_CONFIG_USER_BIT << 3) #define CASCADE_MASK (TK_CONFIG_USER_BIT << 4) #define ALL_MASK (COMMAND_MASK | SEPARATOR_MASK \ | CHECK_BUTTON_MASK | RADIO_BUTTON_MASK | CASCADE_MASK) /* * Configuration specs for individual menu entries: */ static Tk_ConfigSpec entryConfigSpecs[] = { {TK_CONFIG_BORDER, "-activebackground", (char *) NULL, (char *) NULL, DEF_MENU_ENTRY_ACTIVE_BG, Tk_Offset(MenuEntry, activeBorder), COMMAND_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|CASCADE_MASK |TK_CONFIG_NULL_OK}, {TK_CONFIG_STRING, "-accelerator", (char *) NULL, (char *) NULL, DEF_MENU_ENTRY_ACCELERATOR, Tk_Offset(MenuEntry, accel), COMMAND_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|CASCADE_MASK}, {TK_CONFIG_BORDER, "-background", (char *) NULL, (char *) NULL, DEF_MENU_ENTRY_BG, Tk_Offset(MenuEntry, border), COMMAND_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|CASCADE_MASK |TK_CONFIG_NULL_OK}, {TK_CONFIG_BITMAP, "-bitmap", (char *) NULL, (char *) NULL, DEF_MENU_ENTRY_BITMAP, Tk_Offset(MenuEntry, bitmap), COMMAND_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|CASCADE_MASK |TK_CONFIG_NULL_OK}, {TK_CONFIG_STRING, "-command", (char *) NULL, (char *) NULL, DEF_MENU_ENTRY_COMMAND, Tk_Offset(MenuEntry, command), COMMAND_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|CASCADE_MASK}, {TK_CONFIG_FONT, "-font", (char *) NULL, (char *) NULL, DEF_MENU_ENTRY_FONT, Tk_Offset(MenuEntry, fontPtr), COMMAND_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|CASCADE_MASK |TK_CONFIG_NULL_OK}, {TK_CONFIG_STRING, "-label", (char *) NULL, (char *) NULL, DEF_MENU_ENTRY_LABEL, Tk_Offset(MenuEntry, label), COMMAND_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|CASCADE_MASK}, {TK_CONFIG_STRING, "-menu", (char *) NULL, (char *) NULL, DEF_MENU_ENTRY_MENU, Tk_Offset(MenuEntry, name), CASCADE_MASK}, {TK_CONFIG_STRING, "-offvalue", (char *) NULL, (char *) NULL, DEF_MENU_ENTRY_OFF_VALUE, Tk_Offset(MenuEntry, offValue), CHECK_BUTTON_MASK}, {TK_CONFIG_UID, "-state", (char *) NULL, (char *) NULL, DEF_MENU_ENTRY_STATE, Tk_Offset(MenuEntry, state), COMMAND_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|CASCADE_MASK |TK_CONFIG_DONT_SET_DEFAULT}, {TK_CONFIG_STRING, "-onvalue", (char *) NULL, (char *) NULL, DEF_MENU_ENTRY_ON_VALUE, Tk_Offset(MenuEntry, onValue), CHECK_BUTTON_MASK}, {TK_CONFIG_STRING, "-value", (char *) NULL, (char *) NULL, DEF_MENU_ENTRY_VALUE, Tk_Offset(MenuEntry, onValue), RADIO_BUTTON_MASK}, {TK_CONFIG_STRING, "-variable", (char *) NULL, (char *) NULL, DEF_MENU_ENTRY_CHECK_VARIABLE, Tk_Offset(MenuEntry, name), CHECK_BUTTON_MASK}, {TK_CONFIG_STRING, "-variable", (char *) NULL, (char *) NULL, DEF_MENU_ENTRY_RADIO_VARIABLE, Tk_Offset(MenuEntry, name), RADIO_BUTTON_MASK}, {TK_CONFIG_INT, "-underline", (char *) NULL, (char *) NULL, DEF_MENU_ENTRY_UNDERLINE, Tk_Offset(MenuEntry, underline), COMMAND_MASK|CHECK_BUTTON_MASK|RADIO_BUTTON_MASK|CASCADE_MASK |TK_CONFIG_DONT_SET_DEFAULT}, {TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL, (char *) NULL, 0, 0} }; /* * A data structure of the following type is kept for each * menu managed by this file: */ typedef struct Menu { Tk_Window tkwin; /* Window that embodies the pane. NULL * means that the window has been destroyed * but the data structures haven't yet been * cleaned up.*/ Display *display; /* Display containing widget. Needed, among * other things, so that resources can be * freed up even after tkwin has gone away. */ Tcl_Interp *interp; /* Interpreter associated with menu. */ MenuEntry **entries; /* Array of pointers to all the entries * in the menu. NULL means no entries. */ int numEntries; /* Number of elements in entries. */ int active; /* Index of active entry. -1 means * nothing active. */ /* * Information used when displaying widget: */ Tk_3DBorder border; /* Structure used to draw 3-D * border and background for menu. */ int borderWidth; /* Width of border around whole menu. */ Tk_3DBorder activeBorder; /* Used to draw background and border for * active element (if any). */ int activeBorderWidth; /* Width of border around active element. */ XFontStruct *fontPtr; /* Text font for menu entries. */ XColor *fg; /* Foreground color for entries. */ GC textGC; /* GC for drawing text and other features * of menu entries. */ XColor *disabledFg; /* Foreground color when disabled. NULL * means use normalFg with a 50% stipple * instead. */ Pixmap gray; /* Bitmap for drawing disabled entries in * a stippled fashion. None means not * allocated yet. */ GC disabledGC; /* Used to produce disabled effect. If * disabledFg isn't NULL, this GC is used to * draw text and icons for disabled entries. * Otherwise text and icons are drawn with * normalGC and this GC is used to stipple * background across them. */ XColor *activeFg; /* Foreground color for active entry. */ GC activeGC; /* GC for drawing active entry. */ XColor *selectorFg; /* Color for selectors in radio and check * button entries. */ GC selectorGC; /* For drawing selectors. */ int selectorSpace; /* Number of pixels to allow for displaying * selectors in menu entries (includes extra * space around selector). */ int labelWidth; /* Number of pixels to allow for displaying * labels in menu entries. */ /* * Miscellaneous information: */ Cursor cursor; /* Current cursor for window, or None. */ char *postCommand; /* Command to execute just before posting * this menu, or NULL. Malloc-ed. */ MenuEntry *postedCascade; /* Points to menu entry for cascaded * submenu that is currently posted, or * NULL if no submenu posted. */ int flags; /* Various flags; see below for * definitions. */ } Menu; /* * Flag bits for menus: * * REDRAW_PENDING: Non-zero means a DoWhenIdle handler * has already been queued to redraw * this window. * RESIZE_PENDING: Non-zero means a call to ComputeMenuGeometry * has already been scheduled. */ #define REDRAW_PENDING 1 #define RESIZE_PENDING 2 /* * Configuration specs valid for the menu as a whole: */ static Tk_ConfigSpec configSpecs[] = { {TK_CONFIG_BORDER, "-activebackground", "activeBackground", "Foreground", DEF_MENU_ACTIVE_BG_COLOR, Tk_Offset(Menu, activeBorder), TK_CONFIG_COLOR_ONLY}, {TK_CONFIG_BORDER, "-activebackground", "activeBackground", "Foreground", DEF_MENU_ACTIVE_BG_MONO, Tk_Offset(Menu, activeBorder), TK_CONFIG_MONO_ONLY}, {TK_CONFIG_PIXELS, "-activeborderwidth", "activeBorderWidth", "BorderWidth", DEF_MENU_ACTIVE_BORDER_WIDTH, Tk_Offset(Menu, activeBorderWidth), 0}, {TK_CONFIG_COLOR, "-activeforeground", "activeForeground", "Background", DEF_MENU_ACTIVE_FG_COLOR, Tk_Offset(Menu, activeFg), TK_CONFIG_COLOR_ONLY}, {TK_CONFIG_COLOR, "-activeforeground", "activeForeground", "Background", DEF_MENU_ACTIVE_FG_MONO, Tk_Offset(Menu, activeFg), TK_CONFIG_MONO_ONLY}, {TK_CONFIG_BORDER, "-background", "background", "Background", DEF_MENU_BG_COLOR, Tk_Offset(Menu, border), TK_CONFIG_COLOR_ONLY}, {TK_CONFIG_BORDER, "-background", "background", "Background", DEF_MENU_BG_MONO, Tk_Offset(Menu, border), TK_CONFIG_MONO_ONLY}, {TK_CONFIG_SYNONYM, "-bd", "borderWidth", (char *) NULL, (char *) NULL, 0, 0}, {TK_CONFIG_SYNONYM, "-bg", "background", (char *) NULL, (char *) NULL, 0, 0}, {TK_CONFIG_PIXELS, "-borderwidth", "borderWidth", "BorderWidth", DEF_MENU_BORDER_WIDTH, Tk_Offset(Menu, borderWidth), 0}, {TK_CONFIG_ACTIVE_CURSOR, "-cursor", "cursor", "Cursor", DEF_MENU_CURSOR, Tk_Offset(Menu, cursor), TK_CONFIG_NULL_OK}, {TK_CONFIG_COLOR, "-disabledforeground", "disabledForeground", "DisabledForeground", DEF_MENU_DISABLED_FG_COLOR, Tk_Offset(Menu, disabledFg), TK_CONFIG_COLOR_ONLY|TK_CONFIG_NULL_OK}, {TK_CONFIG_COLOR, "-disabledforeground", "disabledForeground", "DisabledForeground", DEF_MENU_DISABLED_FG_MONO, Tk_Offset(Menu, disabledFg), TK_CONFIG_MONO_ONLY|TK_CONFIG_NULL_OK}, {TK_CONFIG_SYNONYM, "-fg", "foreground", (char *) NULL, (char *) NULL, 0, 0}, {TK_CONFIG_FONT, "-font", "font", "Font", DEF_MENU_FONT, Tk_Offset(Menu, fontPtr), 0}, {TK_CONFIG_COLOR, "-foreground", "foreground", "Foreground", DEF_MENU_FG, Tk_Offset(Menu, fg), 0}, {TK_CONFIG_STRING, "-postcommand", "postCommand", "Command", DEF_MENU_POST_COMMAND, Tk_Offset(Menu, postCommand), TK_CONFIG_NULL_OK}, {TK_CONFIG_COLOR, "-selector", "selector", "Foreground", DEF_MENU_SELECTOR_COLOR, Tk_Offset(Menu, selectorFg), TK_CONFIG_COLOR_ONLY}, {TK_CONFIG_COLOR, "-selector", "selector", "Foreground", DEF_MENU_SELECTOR_MONO, Tk_Offset(Menu, selectorFg), TK_CONFIG_MONO_ONLY}, {TK_CONFIG_END, (char *) NULL, (char *) NULL, (char *) NULL, (char *) NULL, 0, 0} }; /* * Forward declarations for procedures defined later in this file: */ static int ActivateMenuEntry _ANSI_ARGS_((Menu *menuPtr, int index)); static void ComputeMenuGeometry _ANSI_ARGS_(( ClientData clientData)); static int ConfigureMenu _ANSI_ARGS_((Tcl_Interp *interp, Menu *menuPtr, int argc, char **argv, int flags)); static int ConfigureMenuEntry _ANSI_ARGS_((Tcl_Interp *interp, Menu *menuPtr, MenuEntry *mePtr, int index, int argc, char **argv, int flags)); static void DestroyMenu _ANSI_ARGS_((ClientData clientData)); static void DestroyMenuEntry _ANSI_ARGS_((ClientData clientData)); static void DisplayMenu _ANSI_ARGS_((ClientData clientData)); static void EventuallyRedrawMenu _ANSI_ARGS_((Menu *menuPtr, int index)); static int GetMenuIndex _ANSI_ARGS_((Tcl_Interp *interp, Menu *menuPtr, char *string, int *indexPtr)); static void MenuEventProc _ANSI_ARGS_((ClientData clientData, XEvent *eventPtr)); static char * MenuVarProc _ANSI_ARGS_((ClientData clientData, Tcl_Interp *interp, char *name1, char *name2, int flags)); static int MenuWidgetCmd _ANSI_ARGS_((ClientData clientData, Tcl_Interp *interp, int argc, char **argv)); static int PostSubmenu _ANSI_ARGS_((Tcl_Interp *interp, Menu *menuPtr, MenuEntry *mePtr)); /* *-------------------------------------------------------------- * * Tk_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. * *-------------------------------------------------------------- */ int Tk_MenuCmd(clientData, interp, argc, argv) ClientData clientData; /* Main window associated with * interpreter. */ Tcl_Interp *interp; /* Current interpreter. */ int argc; /* Number of arguments. */ char **argv; /* Argument strings. */ { Tk_Window tkwin = (Tk_Window) clientData; Tk_Window new; register Menu *menuPtr; XSetWindowAttributes atts; if (argc < 2) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " pathName ?options?\"", (char *) NULL); return TCL_ERROR; } /* * Create the new window. Set override-redirect so the window * manager won't add a border or argue about placement, and set * save-under so that the window can pop up and down without a * lot of re-drawing. */ new = Tk_CreateWindowFromPath(interp, tkwin, argv[1], ""); if (new == NULL) { return TCL_ERROR; } atts.override_redirect = True; atts.save_under = True; Tk_ChangeWindowAttributes(new, CWOverrideRedirect|CWSaveUnder, &atts); /* * Initialize the data structure for the menu. */ menuPtr = (Menu *) ckalloc(sizeof(Menu)); menuPtr->tkwin = new; menuPtr->display = Tk_Display(new); menuPtr->interp = interp; menuPtr->entries = NULL; menuPtr->numEntries = 0; menuPtr->active = -1; menuPtr->border = NULL; menuPtr->activeBorder = NULL; menuPtr->fontPtr = NULL; menuPtr->fg = NULL; menuPtr->textGC = None; menuPtr->disabledFg = NULL; menuPtr->gray = None; menuPtr->disabledGC = None; menuPtr->activeFg = NULL; menuPtr->activeGC = None; menuPtr->selectorFg = NULL; menuPtr->selectorGC = None; menuPtr->cursor = None; menuPtr->postCommand = NULL; menuPtr->postedCascade = NULL; menuPtr->flags = 0; Tk_SetClass(new, "Menu"); Tk_CreateEventHandler(menuPtr->tkwin, ExposureMask|StructureNotifyMask, MenuEventProc, (ClientData) menuPtr); Tcl_CreateCommand(interp, Tk_PathName(menuPtr->tkwin), MenuWidgetCmd, (ClientData) menuPtr, (void (*)()) NULL); if (ConfigureMenu(interp, menuPtr, argc-2, argv+2, 0) != TCL_OK) { goto error; } interp->result = Tk_PathName(menuPtr->tkwin); return TCL_OK; error: Tk_DestroyWindow(menuPtr->tkwin); return TCL_ERROR; } /* *-------------------------------------------------------------- * * MenuWidgetCmd -- * * 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 MenuWidgetCmd(clientData, interp, argc, argv) ClientData clientData; /* Information about menu widget. */ Tcl_Interp *interp; /* Current interpreter. */ int argc; /* Number of arguments. */ char **argv; /* Argument strings. */ { register Menu *menuPtr = (Menu *) clientData; register MenuEntry *mePtr; int result = TCL_OK; int length, type; char c; if (argc < 2) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " option ?arg arg ...?\"", (char *) NULL); return TCL_ERROR; } Tk_Preserve((ClientData) menuPtr); c = argv[1][0]; length = strlen(argv[1]); if ((c == 'a') && (strncmp(argv[1], "activate", length) == 0) && (length >= 2)) { int index; if (argc != 3) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " activate index\"", (char *) NULL); goto error; } if (GetMenuIndex(interp, menuPtr, argv[2], &index) != TCL_OK) { goto error; } if (menuPtr->active == index) { goto done; } if (index >= 0) { if ((menuPtr->entries[index]->type == SEPARATOR_ENTRY) || (menuPtr->entries[index]->state == tkDisabledUid)) { index = -1; } } result = ActivateMenuEntry(menuPtr, index); } else if ((c == 'a') && (strncmp(argv[1], "add", length) == 0) && (length >= 2)) { MenuEntry **newEntries; if (argc < 3) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " add type ?options?\"", (char *) NULL); goto error; } /* * Figure out the type of the new entry. */ c = argv[2][0]; length = strlen(argv[2]); if ((c == 'c') && (strncmp(argv[2], "cascade", length) == 0) && (length >= 2)) { type = CASCADE_ENTRY; } else if ((c == 'c') && (strncmp(argv[2], "checkbutton", length) == 0) && (length >= 2)) { type = CHECK_BUTTON_ENTRY; } else if ((c == 'c') && (strncmp(argv[2], "command", length) == 0) && (length >= 2)) { type = COMMAND_ENTRY; } else if ((c == 'r') && (strncmp(argv[2], "radiobutton", length) == 0)) { type = RADIO_BUTTON_ENTRY; } else if ((c == 's') && (strncmp(argv[2], "separator", length) == 0)) { type = SEPARATOR_ENTRY; } else { Tcl_AppendResult(interp, "bad menu entry type \"", argv[2], "\": must be cascade, checkbutton, ", "command, radiobutton, or separator", (char *) NULL); goto error; } /* * Add a new entry to the end of the menu's array of entries, * and process options for it. */ mePtr = (MenuEntry *) ckalloc(sizeof(MenuEntry)); newEntries = (MenuEntry **) ckalloc((unsigned) ((menuPtr->numEntries+1)*sizeof(MenuEntry *))); if (menuPtr->numEntries != 0) { memcpy((VOID *) newEntries, (VOID *) menuPtr->entries, menuPtr->numEntries*sizeof(MenuEntry *)); ckfree((char *) menuPtr->entries); } menuPtr->entries = newEntries; menuPtr->entries[menuPtr->numEntries] = mePtr; menuPtr->numEntries++; mePtr->type = type; mePtr->menuPtr = menuPtr; mePtr->label = NULL; mePtr->underline = -1; mePtr->bitmap = None; mePtr->accel = NULL; mePtr->state = tkNormalUid; mePtr->border = NULL; mePtr->activeBorder = NULL; mePtr->fontPtr = NULL; mePtr->textGC = None; mePtr->activeGC = None; mePtr->disabledGC = None; mePtr->command = NULL; mePtr->name = NULL; mePtr->onValue = NULL; mePtr->offValue = NULL; mePtr->flags = 0; if (ConfigureMenuEntry(interp, menuPtr, mePtr, menuPtr->numEntries-1, argc-3, argv+3, 0) != TCL_OK) { DestroyMenuEntry((ClientData) mePtr); menuPtr->numEntries--; goto error; } } else if ((c == 'c') && (strncmp(argv[1], "configure", length) == 0)) { if (argc == 2) { result = Tk_ConfigureInfo(interp, menuPtr->tkwin, configSpecs, (char *) menuPtr, (char *) NULL, 0); } else if (argc == 3) { result = Tk_ConfigureInfo(interp, menuPtr->tkwin, configSpecs, (char *) menuPtr, argv[2], 0); } else { result = ConfigureMenu(interp, menuPtr, argc-2, argv+2, TK_CONFIG_ARGV_ONLY); } } else if ((c == 'd') && (strncmp(argv[1], "delete", length) == 0) && (length >= 2)) { int first, last, i, numDeleted; if ((argc != 3) && (argc != 4)) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " delete first ?last?\"", (char *) NULL); goto error; } if (GetMenuIndex(interp, menuPtr, argv[2], &first) != TCL_OK) { goto error; } if (argc == 3) { last = first; } else { if (GetMenuIndex(interp, menuPtr, argv[3], &last) != TCL_OK) { goto error; } } if ((first < 0) || (last < first)) { goto done; } numDeleted = last + 1 - first; for (i = first; i <= last; i++) { Tk_EventuallyFree((ClientData) menuPtr->entries[i], DestroyMenuEntry); } for (i = last+1; i < menuPtr->numEntries; i++) { menuPtr->entries[i-numDeleted] = menuPtr->entries[i]; } menuPtr->numEntries -= numDeleted; if ((menuPtr->active >= first) && (menuPtr->active <= last)) { menuPtr->active = -1; } else if (menuPtr->active > last) { menuPtr->active -= numDeleted; } if (!(menuPtr->flags & RESIZE_PENDING)) { menuPtr->flags |= RESIZE_PENDING; Tk_DoWhenIdle(ComputeMenuGeometry, (ClientData) menuPtr); } } else if ((c == 'd') && (strncmp(argv[1], "disable", length) == 0) && (length >= 2)) { int index; if (argc != 3) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " disable index\"", (char *) NULL); goto error; } if (GetMenuIndex(interp, menuPtr, argv[2], &index) != TCL_OK) { goto error; } if (index < 0) { goto done; } menuPtr->entries[index]->state = tkDisabledUid; if (menuPtr->active == index) { menuPtr->active = -1; } EventuallyRedrawMenu(menuPtr, index); } else if ((c == 'e') && (length >= 3) && (strncmp(argv[1], "enable", length) == 0)) { int index; if (argc != 3) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " enable index\"", (char *) NULL); goto error; } if (GetMenuIndex(interp, menuPtr, argv[2], &index) != TCL_OK) { goto error; } if (index < 0) { goto done; } menuPtr->entries[index]->state = tkNormalUid; EventuallyRedrawMenu(menuPtr, index); } else if ((c == 'e') && (length >= 3) && (strncmp(argv[1], "entryconfigure", length) == 0)) { int index; if (argc < 3) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " entryconfigure index ?option value ...?\"", (char *) NULL); goto error; } if (GetMenuIndex(interp, menuPtr, argv[2], &index) != TCL_OK) { goto error; } if (index < 0) { goto done; } mePtr = menuPtr->entries[index]; Tk_Preserve((ClientData) mePtr); if (argc == 3) { result = Tk_ConfigureInfo(interp, menuPtr->tkwin, entryConfigSpecs, (char *) mePtr, (char *) NULL, COMMAND_MASK << mePtr->type); } else if (argc == 4) { result = Tk_ConfigureInfo(interp, menuPtr->tkwin, entryConfigSpecs, (char *) mePtr, argv[3], COMMAND_MASK << mePtr->type); } else { result = ConfigureMenuEntry(interp, menuPtr, mePtr, index, argc-3, argv+3, TK_CONFIG_ARGV_ONLY | COMMAND_MASK << mePtr->type); } Tk_Release((ClientData) mePtr); } else if ((c == 'i') && (strncmp(argv[1], "index", length) == 0) && (length >= 3)) { int index; if (argc != 3) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " index string\"", (char *) NULL); goto error; } if (GetMenuIndex(interp, menuPtr, argv[2], &index) != TCL_OK) { goto error; } if (index < 0) { interp->result = "none"; } else { sprintf(interp->result, "%d", index); } } else if ((c == 'i') && (strncmp(argv[1], "invoke", length) == 0) && (length >= 3)) { int index; if (argc != 3) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " invoke index\"", (char *) NULL); goto error; } if (GetMenuIndex(interp, menuPtr, argv[2], &index) != TCL_OK) { goto error; } if (index < 0) { goto done; } mePtr = menuPtr->entries[index]; if (mePtr->state == tkDisabledUid) { goto done; } Tk_Preserve((ClientData) mePtr); if (mePtr->type == CHECK_BUTTON_ENTRY) { if (mePtr->flags & ENTRY_SELECTED) { Tcl_SetVar(interp, mePtr->name, mePtr->offValue, TCL_GLOBAL_ONLY); } else { Tcl_SetVar(interp, mePtr->name, mePtr->onValue, TCL_GLOBAL_ONLY); } } else if (mePtr->type == RADIO_BUTTON_ENTRY) { Tcl_SetVar(interp, mePtr->name, mePtr->onValue, TCL_GLOBAL_ONLY); } if ((mePtr->command != NULL) && (mePtr->type != CASCADE_ENTRY)) { result = Tcl_GlobalEval(interp, mePtr->command); } Tk_Release((ClientData) mePtr); } else if ((c == 'p') && (strncmp(argv[1], "post", length) == 0)) { int x, y, tmp, vRootX, vRootY; unsigned int vRootWidth, vRootHeight; if (argc != 4) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " post x y\"", (char *) NULL); goto error; } if ((Tcl_GetInt(interp, argv[2], &x) != TCL_OK) || (Tcl_GetInt(interp, argv[3], &y) != TCL_OK)) { goto error; } /* * If there is a command for the menu, execute it. */ if (menuPtr->postCommand != NULL) { result = Tcl_GlobalEval(menuPtr->interp, menuPtr->postCommand); if (result != TCL_OK) { return result; } } /* * Adjust the position of the menu if necessary to keep it * visible on the screen. There are two special tricks to * make this work right: * * 1. If a virtual root window manager is being used then * the coordinates are in the virtual root window of * menuPtr's parent; since the menu uses override-redirect * mode it will be in the *real* root window for the screen, * so we have to map the coordinates from the virtual root * (if any) to the real root. Can't get the virtual root * from the menu itself (it will never be seen by the wm) * so use its parent instead (it would be better to have an * an option that names a window to use for this...). * 2. The menu may not have been mapped yet, so its current size * might be the default 1x1. To compute how much space it * needs, use its requested size, not its actual size. */ Tk_GetVRootGeometry(Tk_Parent(menuPtr->tkwin), &vRootX, &vRootY, &vRootWidth, &vRootHeight); x += vRootX; y += vRootY; tmp = WidthOfScreen(Tk_Screen(menuPtr->tkwin)) - Tk_ReqWidth(menuPtr->tkwin); if (x > tmp) { x = tmp; } if (x < 0) { x = 0; } tmp = HeightOfScreen(Tk_Screen(menuPtr->tkwin)) - Tk_ReqHeight(menuPtr->tkwin); if (y > tmp) { y = tmp; } if (y < 0) { y = 0; } if ((x != Tk_X(menuPtr->tkwin)) || (y != Tk_Y(menuPtr->tkwin))) { Tk_MoveToplevelWindow(menuPtr->tkwin, x, y); } if (!Tk_IsMapped(menuPtr->tkwin)) { Tk_MapWindow(menuPtr->tkwin); } XRaiseWindow(menuPtr->display, Tk_WindowId(menuPtr->tkwin)); } else if ((c == 'u') && (strncmp(argv[1], "unpost", length) == 0)) { if (argc != 2) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " unpost\"", (char *) NULL); goto error; } Tk_UnmapWindow(menuPtr->tkwin); if (result == TCL_OK) { result = PostSubmenu(interp, menuPtr, (MenuEntry *) NULL); } } else if ((c == 'y') && (strncmp(argv[1], "yposition", length) == 0)) { int index; if (argc != 3) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " yposition index\"", (char *) NULL); goto error; } if (GetMenuIndex(interp, menuPtr, argv[2], &index) != TCL_OK) { goto error; } if (index < 0) { interp->result = "0"; } else { sprintf(interp->result, "%d", menuPtr->entries[index]->y); } } else { Tcl_AppendResult(interp, "bad option \"", argv[1], "\": must be activate, add, configure, delete, disable, ", "enable, entryconfigure, index, invoke, post, ", "unpost, or yposition", (char *) NULL); goto error; } done: Tk_Release((ClientData) menuPtr); return result; error: Tk_Release((ClientData) menuPtr); return TCL_ERROR; } /* *---------------------------------------------------------------------- * * DestroyMenu -- * * This procedure is invoked by Tk_EventuallyFree or Tk_Release * to clean up the internal structure of a menu at a safe time * (when no-one is using it anymore). * * Results: * None. * * Side effects: * Everything associated with the menu is freed up. * *---------------------------------------------------------------------- */ static void DestroyMenu(clientData) ClientData clientData; /* Info about menu widget. */ { register Menu *menuPtr = (Menu *) clientData; int i; for (i = 0; i < menuPtr->numEntries; i++) { DestroyMenuEntry((ClientData) menuPtr->entries[i]); } if (menuPtr->entries != NULL) { ckfree((char *) menuPtr->entries); } if (menuPtr->border != NULL) { Tk_Free3DBorder(menuPtr->border); } if (menuPtr->activeBorder != NULL) { Tk_Free3DBorder(menuPtr->activeBorder); } if (menuPtr->fontPtr != NULL) { Tk_FreeFontStruct(menuPtr->fontPtr); } if (menuPtr->fg != NULL) { Tk_FreeColor(menuPtr->fg); } if (menuPtr->textGC != None) { Tk_FreeGC(menuPtr->display, menuPtr->textGC); } if (menuPtr->disabledFg != NULL) { Tk_FreeColor(menuPtr->disabledFg); } if (menuPtr->gray != None) { Tk_FreeBitmap(menuPtr->display, menuPtr->gray); } if (menuPtr->disabledGC != None) { Tk_FreeGC(menuPtr->display, menuPtr->disabledGC); } if (menuPtr->activeFg != NULL) { Tk_FreeColor(menuPtr->activeFg); } if (menuPtr->activeGC != None) { Tk_FreeGC(menuPtr->display, menuPtr->activeGC); } if (menuPtr->selectorFg != NULL) { Tk_FreeColor(menuPtr->selectorFg); } if (menuPtr->selectorGC != None) { Tk_FreeGC(menuPtr->display, menuPtr->selectorGC); } if (menuPtr->cursor != None) { Tk_FreeCursor(menuPtr->display, menuPtr->cursor); } if (menuPtr->postCommand != NULL) { ckfree(menuPtr->postCommand); } ckfree((char *) menuPtr); } /* *---------------------------------------------------------------------- * * DestroyMenuEntry -- * * This procedure is invoked by Tk_EventuallyFree or Tk_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 up. * *---------------------------------------------------------------------- */ static void DestroyMenuEntry(clientData) ClientData clientData; /* Pointer to entry to be freed. */ { register MenuEntry *mePtr = (MenuEntry *) clientData; Menu *menuPtr = mePtr->menuPtr; if (mePtr->name != NULL) { Tcl_UntraceVar(menuPtr->interp, mePtr->name, TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS, MenuVarProc, (ClientData) mePtr); } if (menuPtr->postedCascade == mePtr) { if (PostSubmenu(menuPtr->interp, menuPtr, (MenuEntry *) NULL) != TCL_OK) { Tk_BackgroundError(menuPtr->interp); } } if (mePtr->label != NULL) { ckfree(mePtr->label); } if (mePtr->bitmap != None) { Tk_FreeBitmap(menuPtr->display, mePtr->bitmap); } if (mePtr->accel != NULL) { ckfree(mePtr->accel); } if (mePtr->border != NULL) { Tk_Free3DBorder(mePtr->border); } if (mePtr->activeBorder != NULL) { Tk_Free3DBorder(mePtr->activeBorder); } if (mePtr->fontPtr != NULL) { Tk_FreeFontStruct(mePtr->fontPtr); } if (mePtr->textGC != NULL) { Tk_FreeGC(menuPtr->display, mePtr->textGC); } if (mePtr->activeGC != NULL) { Tk_FreeGC(menuPtr->display, mePtr->activeGC); } if (mePtr->disabledGC != NULL) { Tk_FreeGC(menuPtr->display, mePtr->disabledGC); } if (mePtr->command != NULL) { ckfree(mePtr->command); } if (mePtr->name != NULL) { ckfree(mePtr->name); } if (mePtr->onValue != NULL) { ckfree(mePtr->onValue); } if (mePtr->offValue != NULL) { ckfree(mePtr->offValue); } ckfree((char *) mePtr); } /* *---------------------------------------------------------------------- * * 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 interp->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, argc, argv, flags) Tcl_Interp *interp; /* Used for error reporting. */ register Menu *menuPtr; /* Information about widget; may or may * not already have values for some fields. */ int argc; /* Number of valid entries in argv. */ char **argv; /* Arguments. */ int flags; /* Flags to pass to Tk_ConfigureWidget. */ { XGCValues gcValues; GC newGC; unsigned long mask; int i; if (Tk_ConfigureWidget(interp, menuPtr->tkwin, configSpecs, argc, argv, (char *) menuPtr, flags) != TCL_OK) { return TCL_ERROR; } /* * A few options need special processing, such as setting the * background from a 3-D border, or filling in complicated * defaults that couldn't be specified to Tk_ConfigureWidget. */ Tk_SetBackgroundFromBorder(menuPtr->tkwin, menuPtr->border); gcValues.font = menuPtr->fontPtr->fid; gcValues.foreground = menuPtr->fg->pixel; gcValues.background = Tk_3DBorderColor(menuPtr->border)->pixel; newGC = Tk_GetGC(menuPtr->tkwin, GCForeground|GCBackground|GCFont, &gcValues); if (menuPtr->textGC != None) { Tk_FreeGC(menuPtr->display, menuPtr->textGC); } menuPtr->textGC = newGC; if (menuPtr->disabledFg != NULL) { gcValues.foreground = menuPtr->disabledFg->pixel; mask = GCForeground|GCBackground|GCFont; } else { gcValues.foreground = gcValues.background; if (menuPtr->gray == None) { menuPtr->gray = Tk_GetBitmap(interp, menuPtr->tkwin, Tk_GetUid("gray50")); if (menuPtr->gray == None) { return TCL_ERROR; } } gcValues.fill_style = FillStippled; gcValues.stipple = menuPtr->gray; mask = GCForeground|GCFillStyle|GCStipple; } newGC = Tk_GetGC(menuPtr->tkwin, mask, &gcValues); if (menuPtr->disabledGC != None) { Tk_FreeGC(menuPtr->display, menuPtr->disabledGC); } menuPtr->disabledGC = newGC; gcValues.font = menuPtr->fontPtr->fid; gcValues.foreground = menuPtr->activeFg->pixel; gcValues.background = Tk_3DBorderColor(menuPtr->activeBorder)->pixel; newGC = Tk_GetGC(menuPtr->tkwin, GCForeground|GCBackground|GCFont, &gcValues); if (menuPtr->activeGC != None) { Tk_FreeGC(menuPtr->display, menuPtr->activeGC); } menuPtr->activeGC = newGC; gcValues.foreground = menuPtr->selectorFg->pixel; newGC = Tk_GetGC(menuPtr->tkwin, GCForeground|GCFont, &gcValues); if (menuPtr->selectorGC != None) { Tk_FreeGC(menuPtr->display, menuPtr->selectorGC); } menuPtr->selectorGC = newGC; /* * 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 < menuPtr->numEntries; i++) { MenuEntry *mePtr; mePtr = menuPtr->entries[i]; ConfigureMenuEntry(interp, menuPtr, mePtr, i, 0, (char **) NULL, TK_CONFIG_ARGV_ONLY | COMMAND_MASK << mePtr->type); } if (!(menuPtr->flags & RESIZE_PENDING)) { menuPtr->flags |= RESIZE_PENDING; Tk_DoWhenIdle(ComputeMenuGeometry, (ClientData) menuPtr); } return TCL_OK; } /* *---------------------------------------------------------------------- * * ConfigureMenuEntry -- * * This procedure is called to process an argv/argc list, plus * the Tk option database, 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 interp->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(interp, menuPtr, mePtr, index, argc, argv, flags) Tcl_Interp *interp; /* Used for error reporting. */ Menu *menuPtr; /* Information about whole menu. */ register MenuEntry *mePtr; /* Information about menu entry; may * or may not already have values for * some fields. */ int index; /* Index of mePtr within menuPtr's * entries. */ int argc; /* Number of valid entries in argv. */ char **argv; /* Arguments. */ int flags; /* Additional flags to pass to * Tk_ConfigureWidget. */ { XGCValues gcValues; GC newGC, newActiveGC, newDisabledGC; unsigned long mask; /* * If this entry is a cascade and the cascade is posted, then unpost * it before reconfiguring the entry (otherwise the reconfigure might * change the name of the cascaded entry, leaving a posted menu * high and dry). */ if (menuPtr->postedCascade == mePtr) { if (PostSubmenu(menuPtr->interp, menuPtr, (MenuEntry *) NULL) != TCL_OK) { Tk_BackgroundError(menuPtr->interp); } } /* * If this entry is a check button or radio button, then remove * its old trace procedure. */ if ((mePtr->name != NULL) && ((mePtr->type == CHECK_BUTTON_ENTRY) || (mePtr->type == RADIO_BUTTON_ENTRY))) { Tcl_UntraceVar(menuPtr->interp, mePtr->name, TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS, MenuVarProc, (ClientData) mePtr); } if (Tk_ConfigureWidget(interp, menuPtr->tkwin, entryConfigSpecs, argc, argv, (char *) mePtr, flags | (COMMAND_MASK << mePtr->type)) != TCL_OK) { return TCL_ERROR; } /* * 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->label == NULL) { mePtr->labelLength = 0; } else { mePtr->labelLength = strlen(mePtr->label); } if (mePtr->accel == NULL) { mePtr->accelLength = 0; } else { mePtr->accelLength = strlen(mePtr->accel); } if (mePtr->state == tkActiveUid) { if (index != menuPtr->active) { ActivateMenuEntry(menuPtr, index); } } else { if (index == menuPtr->active) { ActivateMenuEntry(menuPtr, -1); } if ((mePtr->state != tkNormalUid) && (mePtr->state != tkDisabledUid)) { Tcl_AppendResult(interp, "bad state value \"", mePtr->state, "\": must be normal, active, or disabled", (char *) NULL); mePtr->state = tkNormalUid; return TCL_ERROR; } } if (mePtr->fontPtr != NULL) { gcValues.foreground = menuPtr->fg->pixel; gcValues.background = Tk_3DBorderColor( (mePtr->border != NULL) ? mePtr->border : menuPtr->border) ->pixel; gcValues.font = mePtr->fontPtr->fid; /* * Note: disable GraphicsExpose events; we know there won't be * obscured areas when copying from an off-screen pixmap to the * screen and this gets rid of unnecessary events. */ gcValues.graphics_exposures = False; newGC = Tk_GetGC(menuPtr->tkwin, GCForeground|GCBackground|GCFont|GCGraphicsExposures, &gcValues); if (menuPtr->disabledFg != NULL) { gcValues.foreground = menuPtr->disabledFg->pixel; mask = GCForeground|GCBackground|GCFont|GCGraphicsExposures; } else { gcValues.foreground = gcValues.background; gcValues.fill_style = FillStippled; gcValues.stipple = menuPtr->gray; mask = GCForeground|GCFillStyle|GCStipple; } newDisabledGC = Tk_GetGC(menuPtr->tkwin, mask, &gcValues); gcValues.foreground = menuPtr->activeFg->pixel; gcValues.background = Tk_3DBorderColor( (mePtr->activeBorder != NULL) ? mePtr->activeBorder : menuPtr->activeBorder)->pixel; newActiveGC = Tk_GetGC(menuPtr->tkwin, GCForeground|GCBackground|GCFont|GCGraphicsExposures, &gcValues); } else { newGC = NULL; newActiveGC = NULL; newDisabledGC = NULL; } if (mePtr->textGC != NULL) { Tk_FreeGC(menuPtr->display, mePtr->textGC); } mePtr->textGC = newGC; if (mePtr->activeGC != NULL) { Tk_FreeGC(menuPtr->display, mePtr->activeGC); } mePtr->activeGC = newActiveGC; if (mePtr->disabledGC != NULL) { Tk_FreeGC(menuPtr->display, mePtr->disabledGC); } mePtr->disabledGC = newDisabledGC; if ((mePtr->type == CHECK_BUTTON_ENTRY) || (mePtr->type == RADIO_BUTTON_ENTRY)) { char *value; if (mePtr->name == NULL) { mePtr->name = ckalloc((unsigned) (strlen(mePtr->label) + 1)); strcpy(mePtr->name, mePtr->label); } if (mePtr->onValue == NULL) { mePtr->onValue = ckalloc((unsigned) (strlen(mePtr->label) + 1)); strcpy(mePtr->onValue, mePtr->label); } /* * 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. */ value = Tcl_GetVar(interp, mePtr->name, TCL_GLOBAL_ONLY); mePtr->flags &= ENTRY_SELECTED; if (value != NULL) { if (strcmp(value, mePtr->onValue) == 0) { mePtr->flags |= ENTRY_SELECTED; } } else { Tcl_SetVar(interp, mePtr->name, (mePtr->type == CHECK_BUTTON_ENTRY) ? mePtr->offValue : "", TCL_GLOBAL_ONLY); } Tcl_TraceVar(interp, mePtr->name, TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS, MenuVarProc, (ClientData) mePtr); } if (!(menuPtr->flags & RESIZE_PENDING)) { menuPtr->flags |= RESIZE_PENDING; Tk_DoWhenIdle(ComputeMenuGeometry, (ClientData) menuPtr); } return TCL_OK; } /* *-------------------------------------------------------------- * * ComputeMenuGeometry -- * * This procedure is invoked to recompute the size and * layout of a menu. It is called as a when-idle handler so * that it only gets done once, even if a group of changes is * made to the menu. * * Results: * None. * * Side effects: * Fields of menu entries are changed to reflect their * current positions, and the size of the menu window * itself may be changed. * *-------------------------------------------------------------- */ static void ComputeMenuGeometry(clientData) ClientData clientData; /* Structure describing menu. */ { Menu *menuPtr = (Menu *) clientData; register MenuEntry *mePtr; XFontStruct *fontPtr; int maxLabelWidth, maxSelectorWidth, maxAccelWidth; int width, height, selectorSpace, horizMargin; int i, y; if (menuPtr->tkwin == NULL) { return; } maxLabelWidth = maxSelectorWidth = maxAccelWidth = 0; y = menuPtr->borderWidth; for (i = 0; i < menuPtr->numEntries; i++) { mePtr = menuPtr->entries[i]; selectorSpace = 0; fontPtr = mePtr->fontPtr; if (fontPtr == NULL) { fontPtr = menuPtr->fontPtr; } /* * For each entry, compute the height required by that * particular entry, plus three widths: the width of the * label, the width to allow for a selector to be displayed * to the left of the label (if any), and the width of the * accelerator to be displayed to the right of the label * (if any). These sizes depend, of course, on the type * of the entry. */ if (mePtr->bitmap != None) { unsigned int bitmapWidth, bitmapHeight; Tk_SizeOfBitmap(menuPtr->display, mePtr->bitmap, &bitmapWidth, &bitmapHeight); mePtr->height = bitmapHeight; width = bitmapWidth; if (mePtr->type == CHECK_BUTTON_ENTRY) { selectorSpace = (14*mePtr->height)/10; mePtr->selectorDiameter = (65*mePtr->height)/100; } else if (mePtr->type == RADIO_BUTTON_ENTRY) { selectorSpace = (14*mePtr->height)/10; mePtr->selectorDiameter = (75*mePtr->height)/100; } } else { mePtr->height = fontPtr->ascent + fontPtr->descent; if (mePtr->label != NULL) { (void) TkMeasureChars(fontPtr, mePtr->label, mePtr->labelLength, 0, (int) 100000, TK_NEWLINES_NOT_SPECIAL, &width); } else { width = 0; } if (mePtr->type == CHECK_BUTTON_ENTRY) { selectorSpace = mePtr->height; mePtr->selectorDiameter = (80*mePtr->height)/100; } else if (mePtr->type == RADIO_BUTTON_ENTRY) { selectorSpace = mePtr->height; mePtr->selectorDiameter = mePtr->height; } } mePtr->height += 2*menuPtr->activeBorderWidth + 2; if (width > maxLabelWidth) { maxLabelWidth = width; } if (mePtr->accel != NULL) { (void) TkMeasureChars(fontPtr, mePtr->accel, mePtr->accelLength, 0, (int) 100000, TK_NEWLINES_NOT_SPECIAL, &width); if (width > maxAccelWidth) { maxAccelWidth = width; } } if (mePtr->type == SEPARATOR_ENTRY) { mePtr->height = 4*menuPtr->borderWidth; } if (selectorSpace > maxSelectorWidth) { maxSelectorWidth = selectorSpace; } mePtr->y = y; y += mePtr->height; } /* * Got all the sizes. Update fields in the menu structure, then * resize the window if necessary. Leave margins on either side * of the selector (or just one margin if there is no selector). * Leave another margin on the right side of the label, plus yet * another margin to the right of the accelerator (if there is one). */ horizMargin = 2; menuPtr->selectorSpace = maxSelectorWidth + horizMargin; if (maxSelectorWidth != 0) { menuPtr->selectorSpace += horizMargin; } menuPtr->labelWidth = maxLabelWidth + horizMargin; width = menuPtr->selectorSpace + menuPtr->labelWidth + maxAccelWidth + 2*menuPtr->borderWidth + 2*menuPtr->activeBorderWidth + 2; if (maxAccelWidth != 0) { width += horizMargin; } height = y + menuPtr->borderWidth; /* * The X server doesn't like zero dimensions, so round up to at least * 1 (a zero-sized menu should never really occur, anyway). */ if (width <= 0) { width = 1; } if (height <= 0) { height = 1; } if ((width != Tk_ReqWidth(menuPtr->tkwin)) || (height != Tk_ReqHeight(menuPtr->tkwin))) { Tk_GeometryRequest(menuPtr->tkwin, width, height); } else { /* * Must always force a redisplay here if the window is mapped * (even if the size didn't change, something else might have * changed in the menu, such as a label or accelerator). The * resize will force a redisplay above. */ EventuallyRedrawMenu(menuPtr, -1); } menuPtr->flags &= ~RESIZE_PENDING; } /* *---------------------------------------------------------------------- * * DisplayMenu -- * * This procedure is invoked to display a menu widget. * * Results: * None. * * Side effects: * Commands are output to X to display the menu in its * current mode. * *---------------------------------------------------------------------- */ static void DisplayMenu(clientData) ClientData clientData; /* Information about widget. */ { register Menu *menuPtr = (Menu *) clientData; register MenuEntry *mePtr; register Tk_Window tkwin = menuPtr->tkwin; XFontStruct *fontPtr; int index, baseline; GC gc; menuPtr->flags &= ~REDRAW_PENDING; if ((menuPtr->tkwin == NULL) || !Tk_IsMapped(tkwin)) { return; } /* * Loop through all of the entries, drawing them one at a time. */ for (index = 0; index < menuPtr->numEntries; index++) { mePtr = menuPtr->entries[index]; if (!(mePtr->flags & ENTRY_NEEDS_REDISPLAY)) { continue; } mePtr->flags &= ~ENTRY_NEEDS_REDISPLAY; /* * Background. */ if (mePtr->state == tkActiveUid) { Tk_Fill3DRectangle(menuPtr->display, Tk_WindowId(tkwin), (mePtr->activeBorder != NULL) ? mePtr->activeBorder : menuPtr->activeBorder, menuPtr->borderWidth, mePtr->y, Tk_Width(tkwin) - 2*menuPtr->borderWidth, mePtr->height, menuPtr->activeBorderWidth, TK_RELIEF_RAISED); gc = mePtr->activeGC; if (gc == NULL) { gc = menuPtr->activeGC; } } else { Tk_Fill3DRectangle(menuPtr->display, Tk_WindowId(tkwin), (mePtr->border != NULL) ? mePtr->border : menuPtr->border, menuPtr->borderWidth, mePtr->y, Tk_Width(tkwin) - 2*menuPtr->borderWidth, mePtr->height, 0, TK_RELIEF_FLAT); if ((mePtr->state == tkDisabledUid) && (menuPtr->disabledFg != NULL)) { gc = mePtr->disabledGC; if (gc == NULL) { gc = menuPtr->disabledGC; } } else { gc = mePtr->textGC; if (gc == NULL) { gc = menuPtr->textGC; } } } /* * Draw label or bitmap for entry. */ fontPtr = mePtr->fontPtr; if (fontPtr == NULL) { fontPtr = menuPtr->fontPtr; } baseline = mePtr->y + (mePtr->height + fontPtr->ascent - fontPtr->descent)/2; if (mePtr->bitmap != None) { unsigned int width, height; Tk_SizeOfBitmap(menuPtr->display, mePtr->bitmap, &width, &height); XCopyPlane(menuPtr->display, mePtr->bitmap, Tk_WindowId(tkwin), gc, 0, 0, width, height, menuPtr->borderWidth + menuPtr->selectorSpace, (int) (mePtr->y + (mePtr->height - height)/2), 1); } else { baseline = mePtr->y + (mePtr->height + fontPtr->ascent - fontPtr->descent)/2; if (mePtr->label != NULL) { TkDisplayChars(menuPtr->display, Tk_WindowId(tkwin), gc, fontPtr, mePtr->label, mePtr->labelLength, menuPtr->borderWidth + menuPtr->selectorSpace, baseline, TK_NEWLINES_NOT_SPECIAL); if (mePtr->underline >= 0) { TkUnderlineChars(menuPtr->display, Tk_WindowId(tkwin), gc, fontPtr, mePtr->label, menuPtr->borderWidth + menuPtr->selectorSpace, baseline, TK_NEWLINES_NOT_SPECIAL, mePtr->underline, mePtr->underline); } } } /* * Draw accelerator. */ if (mePtr->accel != NULL) { TkDisplayChars(menuPtr->display, Tk_WindowId(tkwin), gc, fontPtr, mePtr->accel, mePtr->accelLength, menuPtr->borderWidth + menuPtr->selectorSpace + menuPtr->labelWidth, baseline, TK_NEWLINES_NOT_SPECIAL); } /* * Draw check-button selector. */ if (mePtr->type == CHECK_BUTTON_ENTRY) { int dim, x, y; dim = mePtr->selectorDiameter; x = menuPtr->borderWidth + (menuPtr->selectorSpace - dim)/2; y = mePtr->y + (mePtr->height - dim)/2; Tk_Fill3DRectangle(menuPtr->display, Tk_WindowId(tkwin), menuPtr->border, x, y, dim, dim, menuPtr->activeBorderWidth, TK_RELIEF_SUNKEN); x += menuPtr->activeBorderWidth; y += menuPtr->activeBorderWidth; dim -= 2*menuPtr->activeBorderWidth; if ((dim > 0) && (mePtr->flags & ENTRY_SELECTED)) { XFillRectangle(menuPtr->display, Tk_WindowId(tkwin), menuPtr->selectorGC, x, y, (unsigned int) dim, (unsigned int) dim); } } /* * Draw radio-button selector. */ if (mePtr->type == RADIO_BUTTON_ENTRY) { XPoint points[4]; int radius; radius = mePtr->selectorDiameter/2; points[0].x = menuPtr->borderWidth + (menuPtr->selectorSpace - mePtr->selectorDiameter)/2; points[0].y = mePtr->y + (mePtr->height)/2; points[1].x = points[0].x + radius; points[1].y = points[0].y + radius; points[2].x = points[1].x + radius; points[2].y = points[0].y; points[3].x = points[1].x; points[3].y = points[0].y - radius; if (mePtr->flags & ENTRY_SELECTED) { XFillPolygon(menuPtr->display, Tk_WindowId(tkwin), menuPtr->selectorGC, points, 4, Convex, CoordModeOrigin); } else { Tk_Fill3DPolygon(menuPtr->display, Tk_WindowId(tkwin), menuPtr->border, points, 4, menuPtr->activeBorderWidth, TK_RELIEF_FLAT); } Tk_Draw3DPolygon(menuPtr->display, Tk_WindowId(tkwin), menuPtr->border, points, 4, menuPtr->activeBorderWidth, TK_RELIEF_SUNKEN); } /* * Draw separator. */ if (mePtr->type == SEPARATOR_ENTRY) { XPoint points[2]; int margin; margin = (fontPtr->ascent + fontPtr->descent)/2; points[0].x = 2*menuPtr->borderWidth + margin; points[0].y = mePtr->y + mePtr->height/2; points[1].x = Tk_Width(tkwin) - 2*menuPtr->borderWidth - margin; points[1].y = points[0].y; Tk_Draw3DPolygon(menuPtr->display, Tk_WindowId(tkwin), menuPtr->border, points, 2, 1, TK_RELIEF_RAISED); } /* * If the entry is disabled with a stipple rather than a special * foreground color, generate the stippled effect. */ if ((mePtr->state == tkDisabledUid) && (menuPtr->disabledFg == NULL)) { XFillRectangle(menuPtr->display, Tk_WindowId(tkwin), menuPtr->disabledGC, menuPtr->borderWidth, mePtr->y, (unsigned) (Tk_Width(tkwin) - 2*menuPtr->borderWidth), (unsigned) mePtr->height); } } Tk_Draw3DRectangle(menuPtr->display, Tk_WindowId(tkwin), menuPtr->border, 0, 0, Tk_Width(tkwin), Tk_Height(tkwin), menuPtr->borderWidth, TK_RELIEF_RAISED); } /* *-------------------------------------------------------------- * * GetMenuIndex -- * * 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 interp->result. * * Side effects: * None. * *-------------------------------------------------------------- */ static int GetMenuIndex(interp, menuPtr, string, indexPtr) Tcl_Interp *interp; /* For error messages. */ Menu *menuPtr; /* Menu for which the index is being * specified. */ char *string; /* Specification of an entry in menu. See * manual entry for valid .*/ int *indexPtr; /* Where to store converted relief. */ { int i, y; if ((string[0] == 'a') && (strcmp(string, "active") == 0)) { *indexPtr = menuPtr->active; return TCL_OK; } if ((string[0] == 'l') && (strcmp(string, "last") == 0)) { *indexPtr = menuPtr->numEntries-1; return TCL_OK; } if ((string[0] == 'n') && (strcmp(string, "none") == 0)) { *indexPtr = -1; return TCL_OK; } if (string[0] == '@') { if (Tcl_GetInt(interp, string+1, &y) == TCL_OK) { if (y < 0) { *indexPtr = -1; return TCL_OK; } for (i = 0; i < menuPtr->numEntries; i++) { y -= menuPtr->entries[i]->height; if (y < 0) { break; } } if (i >= menuPtr->numEntries) { i = -1; } *indexPtr = i; return TCL_OK; } else { Tcl_SetResult(interp, (char *) NULL, TCL_STATIC); } } if (isdigit(string[0])) { if (Tcl_GetInt(interp, string, &i) == TCL_OK) { if (i >= menuPtr->numEntries) { i = menuPtr->numEntries - 1; } else if (i < 0) { i = -1; } *indexPtr = i; return TCL_OK; } Tcl_SetResult(interp, (char *) NULL, TCL_STATIC); } for (i = 0; i < menuPtr->numEntries; i++) { char *label; label = menuPtr->entries[i]->label; if ((label != NULL) && (Tcl_StringMatch(menuPtr->entries[i]->label, string))) { *indexPtr = i; return TCL_OK; } } Tcl_AppendResult(interp, "bad menu entry index \"", string, "\"", (char *) NULL); return TCL_ERROR; } /* *-------------------------------------------------------------- * * MenuEventProc -- * * This procedure is invoked by the Tk dispatcher for various * events on menus. * * Results: * None. * * Side effects: * When the window gets deleted, internal structures get * cleaned up. When it gets exposed, it is redisplayed. * *-------------------------------------------------------------- */ static void MenuEventProc(clientData, eventPtr) ClientData clientData; /* Information about window. */ XEvent *eventPtr; /* Information about event. */ { Menu *menuPtr = (Menu *) clientData; if ((eventPtr->type == Expose) && (eventPtr->xexpose.count == 0)) { EventuallyRedrawMenu(menuPtr, -1); } else if (eventPtr->type == DestroyNotify) { Tcl_DeleteCommand(menuPtr->interp, Tk_PathName(menuPtr->tkwin)); menuPtr->tkwin = NULL; if (menuPtr->flags & REDRAW_PENDING) { Tk_CancelIdleCall(DisplayMenu, (ClientData) menuPtr); } if (menuPtr->flags & RESIZE_PENDING) { Tk_CancelIdleCall(ComputeMenuGeometry, (ClientData) menuPtr); } Tk_EventuallyFree((ClientData) menuPtr, DestroyMenu); } } /* *-------------------------------------------------------------- * * 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. * *-------------------------------------------------------------- */ /* ARGSUSED */ static char * MenuVarProc(clientData, interp, name1, name2, flags) ClientData clientData; /* Information about menu entry. */ Tcl_Interp *interp; /* Interpreter containing variable. */ char *name1; /* First part of variable's name. */ char *name2; /* Second part of variable's name. */ int flags; /* Describes what just happened. */ { MenuEntry *mePtr = (MenuEntry *) clientData; Menu *menuPtr; char *value; menuPtr = mePtr->menuPtr; /* * If the variable is being unset, then re-establish the * trace unless the whole interpreter is going away. */ if (flags & TCL_TRACE_UNSETS) { mePtr->flags &= ~ENTRY_SELECTED; if ((flags & TCL_TRACE_DESTROYED) && !(flags & TCL_INTERP_DESTROYED)) { Tcl_TraceVar2(interp, name1, name2, TCL_GLOBAL_ONLY|TCL_TRACE_WRITES|TCL_TRACE_UNSETS, MenuVarProc, clientData); } EventuallyRedrawMenu(menuPtr, -1); return (char *) NULL; } /* * Use the value of the variable to update the selected status of * the menu entry. */ value = Tcl_GetVar2(interp, name1, name2, flags & TCL_GLOBAL_ONLY); if (strcmp(value, mePtr->onValue) == 0) { if (mePtr->flags & ENTRY_SELECTED) { return (char *) NULL; } mePtr->flags |= ENTRY_SELECTED; } else if (mePtr->flags & ENTRY_SELECTED) { mePtr->flags &= ~ENTRY_SELECTED; } else { return (char *) NULL; } EventuallyRedrawMenu(menuPtr, -1); return (char *) NULL; } /* *---------------------------------------------------------------------- * * EventuallyRedrawMenu -- * * Arrange for an entry of a menu, or the whole menu, to be * redisplayed at some point in the future. * * Results: * None. * * Side effects: * A when-idle hander is scheduled to do the redisplay, if there * isn't one already scheduled. * *---------------------------------------------------------------------- */ static void EventuallyRedrawMenu(menuPtr, index) register Menu *menuPtr; /* Information about menu to redraw. */ int index; /* Which entry to redraw. If -1, then * all the entries in the menu are redrawn. */ { if (menuPtr->tkwin == NULL) { return; } if (index != -1) { menuPtr->entries[index]->flags |= ENTRY_NEEDS_REDISPLAY; } else { for (index = 0; index < menuPtr->numEntries; index++) { menuPtr->entries[index]->flags |= ENTRY_NEEDS_REDISPLAY; } } if ((menuPtr->tkwin == NULL) || !Tk_IsMapped(menuPtr->tkwin) || (menuPtr->flags & REDRAW_PENDING)) { return; } Tk_DoWhenIdle(DisplayMenu, (ClientData) menuPtr); menuPtr->flags |= REDRAW_PENDING; } /* *-------------------------------------------------------------- * * PostSubmenu -- * * This procedure arranges for a particular submenu (i.e. the * menu corresponding to a given cascade entry) to be * posted. * * Results: * A standard Tcl return result. Errors may occur in the * Tcl commands generated to post and unpost submenus. * * Side effects: * If there is already a submenu posted, it is unposted. * The new submenu is then posted. * *-------------------------------------------------------------- */ static int PostSubmenu(interp, menuPtr, mePtr) Tcl_Interp *interp; /* Used for invoking sub-commands and * reporting errors. */ register Menu *menuPtr; /* Information about menu as a whole. */ register MenuEntry *mePtr; /* Info about submenu that is to be * posted. NULL means make sure that * no submenu is posted. */ { char string[30]; int result, x, y; if (mePtr == menuPtr->postedCascade) { return TCL_OK; } if (menuPtr->postedCascade != NULL) { result = Tcl_VarEval(interp, menuPtr->postedCascade->name, " unpost", (char *) NULL); menuPtr->postedCascade = NULL; if (result != TCL_OK) { return result; } } if ((mePtr != NULL) && (mePtr->name != NULL)) { Tk_GetRootCoords(menuPtr->tkwin, &x, &y); x += Tk_Width(menuPtr->tkwin); y += mePtr->y; sprintf(string, "%d %d", x, y); result = Tcl_VarEval(interp, mePtr->name, " post ", string, (char *) NULL); if (result != TCL_OK) { return result; } menuPtr->postedCascade = mePtr; } return TCL_OK; } /* *---------------------------------------------------------------------- * * ActivateMenuEntry -- * * 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. * *---------------------------------------------------------------------- */ static int ActivateMenuEntry(menuPtr, index) register Menu *menuPtr; /* Menu in which to activate. */ int index; /* Index of entry to activate, or * -1 to deactivate all entries. */ { register MenuEntry *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 == tkActiveUid) { mePtr->state = tkNormalUid; } EventuallyRedrawMenu(menuPtr, menuPtr->active); } menuPtr->active = index; if (index >= 0) { mePtr = menuPtr->entries[index]; mePtr->state = tkActiveUid; EventuallyRedrawMenu(menuPtr, index); Tk_Preserve((ClientData) mePtr); if (mePtr->type == CASCADE_ENTRY) { if (mePtr->command != NULL) { result = Tcl_GlobalEval(menuPtr->interp, mePtr->command); } if (result == TCL_OK) { result = PostSubmenu(menuPtr->interp, menuPtr, mePtr); } } else { result = PostSubmenu(menuPtr->interp, menuPtr, (MenuEntry *) NULL); } Tk_Release((ClientData) mePtr); } return result; }