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Diffstat (limited to 'generic/tkWindow.c')
| -rw-r--r-- | generic/tkWindow.c | 2763 |
1 files changed, 2763 insertions, 0 deletions
diff --git a/generic/tkWindow.c b/generic/tkWindow.c new file mode 100644 index 0000000..fc9060a --- /dev/null +++ b/generic/tkWindow.c @@ -0,0 +1,2763 @@ +/* + * tkWindow.c -- + * + * This file provides basic window-manipulation procedures, + * which are equivalent to procedures in Xlib (and even + * invoke them) but also maintain the local Tk_Window + * structure. + * + * Copyright (c) 1989-1994 The Regents of the University of California. + * Copyright (c) 1994-1997 Sun Microsystems, Inc. + * + * See the file "license.terms" for information on usage and redistribution + * of this file, and for a DISCLAIMER OF ALL WARRANTIES. + * + * SCCS: @(#) tkWindow.c 1.233 97/10/31 09:55:23 + */ + +#include "tkPort.h" +#include "tkInt.h" + +/* + * Count of number of main windows currently open in this process. + */ + +static int numMainWindows; + +/* + * First in list of all main windows managed by this process. + */ + +TkMainInfo *tkMainWindowList = NULL; + +/* + * List of all displays currently in use. + */ + +TkDisplay *tkDisplayList = NULL; + +/* + * Have statics in this module been initialized? + */ + +static int initialized = 0; + +/* + * The variables below hold several uid's that are used in many places + * in the toolkit. + */ + +Tk_Uid tkDisabledUid = NULL; +Tk_Uid tkActiveUid = NULL; +Tk_Uid tkNormalUid = NULL; + +/* + * Default values for "changes" and "atts" fields of TkWindows. Note + * that Tk always requests all events for all windows, except StructureNotify + * events on internal windows: these events are generated internally. + */ + +static XWindowChanges defChanges = { + 0, 0, 1, 1, 0, 0, Above +}; +#define ALL_EVENTS_MASK \ + KeyPressMask|KeyReleaseMask|ButtonPressMask|ButtonReleaseMask| \ + EnterWindowMask|LeaveWindowMask|PointerMotionMask|ExposureMask| \ + VisibilityChangeMask|PropertyChangeMask|ColormapChangeMask +static XSetWindowAttributes defAtts= { + None, /* background_pixmap */ + 0, /* background_pixel */ + CopyFromParent, /* border_pixmap */ + 0, /* border_pixel */ + NorthWestGravity, /* bit_gravity */ + NorthWestGravity, /* win_gravity */ + NotUseful, /* backing_store */ + (unsigned) ~0, /* backing_planes */ + 0, /* backing_pixel */ + False, /* save_under */ + ALL_EVENTS_MASK, /* event_mask */ + 0, /* do_not_propagate_mask */ + False, /* override_redirect */ + CopyFromParent, /* colormap */ + None /* cursor */ +}; + +/* + * The following structure defines all of the commands supported by + * Tk, and the C procedures that execute them. + */ + +typedef struct { + char *name; /* Name of command. */ + Tcl_CmdProc *cmdProc; /* Command's string-based procedure. */ + Tcl_ObjCmdProc *objProc; /* Command's object-based procedure. */ + int isSafe; /* If !0, this command will be exposed in + * a safe interpreter. Otherwise it will be + * hidden in a safe interpreter. */ +} TkCmd; + +static TkCmd commands[] = { + /* + * Commands that are part of the intrinsics: + */ + + {"bell", Tk_BellCmd, NULL, 0}, + {"bind", Tk_BindCmd, NULL, 1}, + {"bindtags", Tk_BindtagsCmd, NULL, 1}, + {"clipboard", Tk_ClipboardCmd, NULL, 0}, + {"destroy", Tk_DestroyCmd, NULL, 1}, + {"event", Tk_EventCmd, NULL, 1}, + {"focus", Tk_FocusCmd, NULL, 1}, + {"font", NULL, Tk_FontObjCmd, 1}, + {"grab", Tk_GrabCmd, NULL, 0}, + {"grid", Tk_GridCmd, NULL, 1}, + {"image", Tk_ImageCmd, NULL, 1}, + {"lower", Tk_LowerCmd, NULL, 1}, + {"option", Tk_OptionCmd, NULL, 1}, + {"pack", Tk_PackCmd, NULL, 1}, + {"place", Tk_PlaceCmd, NULL, 1}, + {"raise", Tk_RaiseCmd, NULL, 1}, + {"selection", Tk_SelectionCmd, NULL, 0}, + {"tk", NULL, Tk_TkObjCmd, 0}, + {"tkwait", Tk_TkwaitCmd, NULL, 1}, + {"tk_chooseColor", Tk_ChooseColorCmd, NULL, 0}, + {"tk_getOpenFile", Tk_GetOpenFileCmd, NULL, 0}, + {"tk_getSaveFile", Tk_GetSaveFileCmd, NULL, 0}, + {"tk_messageBox", Tk_MessageBoxCmd, NULL, 0}, + {"update", Tk_UpdateCmd, NULL, 1}, + {"winfo", NULL, Tk_WinfoObjCmd, 1}, + {"wm", Tk_WmCmd, NULL, 0}, + + /* + * Widget class commands. + */ + {"button", Tk_ButtonCmd, NULL, 1}, + {"canvas", Tk_CanvasCmd, NULL, 1}, + {"checkbutton", Tk_CheckbuttonCmd, NULL, 1}, + {"entry", Tk_EntryCmd, NULL, 1}, + {"frame", Tk_FrameCmd, NULL, 1}, + {"label", Tk_LabelCmd, NULL, 1}, + {"listbox", Tk_ListboxCmd, NULL, 1}, + {"menu", Tk_MenuCmd, NULL, 0}, + {"menubutton", Tk_MenubuttonCmd, NULL, 1}, + {"message", Tk_MessageCmd, NULL, 1}, + {"radiobutton", Tk_RadiobuttonCmd, NULL, 1}, + {"scale", Tk_ScaleCmd, NULL, 1}, + {"scrollbar", Tk_ScrollbarCmd, NULL, 1}, + {"text", Tk_TextCmd, NULL, 1}, + {"toplevel", Tk_ToplevelCmd, NULL, 0}, + + /* + * Misc. + */ + +#ifdef MAC_TCL + {"unsupported1", TkUnsupported1Cmd, NULL, 1}, +#endif + {(char *) NULL, (int (*) _ANSI_ARGS_((ClientData, Tcl_Interp *, int, char **))) NULL, NULL, 0} +}; + +/* + * The variables and table below are used to parse arguments from + * the "argv" variable in Tk_Init. + */ + +static int synchronize = 0; +static char *name = NULL; +static char *display = NULL; +static char *geometry = NULL; +static char *colormap = NULL; +static char *use = NULL; +static char *visual = NULL; +static int rest = 0; + +static Tk_ArgvInfo argTable[] = { + {"-colormap", TK_ARGV_STRING, (char *) NULL, (char *) &colormap, + "Colormap for main window"}, + {"-display", TK_ARGV_STRING, (char *) NULL, (char *) &display, + "Display to use"}, + {"-geometry", TK_ARGV_STRING, (char *) NULL, (char *) &geometry, + "Initial geometry for window"}, + {"-name", TK_ARGV_STRING, (char *) NULL, (char *) &name, + "Name to use for application"}, + {"-sync", TK_ARGV_CONSTANT, (char *) 1, (char *) &synchronize, + "Use synchronous mode for display server"}, + {"-visual", TK_ARGV_STRING, (char *) NULL, (char *) &visual, + "Visual for main window"}, + {"-use", TK_ARGV_STRING, (char *) NULL, (char *) &use, + "Id of window in which to embed application"}, + {"--", TK_ARGV_REST, (char *) 1, (char *) &rest, + "Pass all remaining arguments through to script"}, + {(char *) NULL, TK_ARGV_END, (char *) NULL, (char *) NULL, + (char *) NULL} +}; + +/* + * Forward declarations to procedures defined later in this file: + */ + +static Tk_Window CreateTopLevelWindow _ANSI_ARGS_((Tcl_Interp *interp, + Tk_Window parent, char *name, char *screenName)); +static void DeleteWindowsExitProc _ANSI_ARGS_(( + ClientData clientData)); +static TkDisplay * GetScreen _ANSI_ARGS_((Tcl_Interp *interp, + char *screenName, int *screenPtr)); +static int Initialize _ANSI_ARGS_((Tcl_Interp *interp)); +static int NameWindow _ANSI_ARGS_((Tcl_Interp *interp, + TkWindow *winPtr, TkWindow *parentPtr, + char *name)); +static void OpenIM _ANSI_ARGS_((TkDisplay *dispPtr)); +static void UnlinkWindow _ANSI_ARGS_((TkWindow *winPtr)); + +/* + *---------------------------------------------------------------------- + * + * CreateTopLevelWindow -- + * + * Make a new window that will be at top-level (its parent will + * be the root window of a screen). + * + * Results: + * The return value is a token for the new window, or NULL if + * an error prevented the new window from being created. If + * NULL is returned, an error message will be left in + * interp->result. + * + * Side effects: + * A new window structure is allocated locally. An X + * window is NOT initially created, but will be created + * the first time the window is mapped. + * + *---------------------------------------------------------------------- + */ + +static Tk_Window +CreateTopLevelWindow(interp, parent, name, screenName) + Tcl_Interp *interp; /* Interpreter to use for error reporting. */ + Tk_Window parent; /* Token for logical parent of new window + * (used for naming, options, etc.). May + * be NULL. */ + char *name; /* Name for new window; if parent is + * non-NULL, must be unique among parent's + * children. */ + char *screenName; /* Name of screen on which to create + * window. NULL means use DISPLAY environment + * variable to determine. Empty string means + * use parent's screen, or DISPLAY if no + * parent. */ +{ + register TkWindow *winPtr; + register TkDisplay *dispPtr; + int screenId; + + if (!initialized) { + initialized = 1; + tkActiveUid = Tk_GetUid("active"); + tkDisabledUid = Tk_GetUid("disabled"); + tkNormalUid = Tk_GetUid("normal"); + + /* + * Create built-in image types. + */ + + Tk_CreateImageType(&tkBitmapImageType); + Tk_CreateImageType(&tkPhotoImageType); + + /* + * Create built-in photo image formats. + */ + + Tk_CreatePhotoImageFormat(&tkImgFmtGIF); + Tk_CreatePhotoImageFormat(&tkImgFmtPPM); + + /* + * Create exit handler to delete all windows when the application + * exits. + */ + + Tcl_CreateExitHandler(DeleteWindowsExitProc, (ClientData) NULL); + } + + if ((parent != NULL) && (screenName != NULL) && (screenName[0] == '\0')) { + dispPtr = ((TkWindow *) parent)->dispPtr; + screenId = Tk_ScreenNumber(parent); + } else { + dispPtr = GetScreen(interp, screenName, &screenId); + if (dispPtr == NULL) { + return (Tk_Window) NULL; + } + } + + winPtr = TkAllocWindow(dispPtr, screenId, (TkWindow *) parent); + + /* + * Force the window to use a border pixel instead of border pixmap. + * This is needed for the case where the window doesn't use the + * default visual. In this case, the default border is a pixmap + * inherited from the root window, which won't work because it will + * have the wrong visual. + */ + + winPtr->dirtyAtts |= CWBorderPixel; + + /* + * (Need to set the TK_TOP_LEVEL flag immediately here; otherwise + * Tk_DestroyWindow will core dump if it is called before the flag + * has been set.) + */ + + winPtr->flags |= TK_TOP_LEVEL; + + if (parent != NULL) { + if (NameWindow(interp, winPtr, (TkWindow *) parent, name) != TCL_OK) { + Tk_DestroyWindow((Tk_Window) winPtr); + return (Tk_Window) NULL; + } + } + TkWmNewWindow(winPtr); + + return (Tk_Window) winPtr; +} + +/* + *---------------------------------------------------------------------- + * + * GetScreen -- + * + * Given a string name for a display-plus-screen, find the + * TkDisplay structure for the display and return the screen + * number too. + * + * Results: + * The return value is a pointer to information about the display, + * or NULL if the display couldn't be opened. In this case, an + * error message is left in interp->result. The location at + * *screenPtr is overwritten with the screen number parsed from + * screenName. + * + * Side effects: + * A new connection is opened to the display if there is no + * connection already. A new TkDisplay data structure is also + * setup, if necessary. + * + *---------------------------------------------------------------------- + */ + +static TkDisplay * +GetScreen(interp, screenName, screenPtr) + Tcl_Interp *interp; /* Place to leave error message. */ + char *screenName; /* Name for screen. NULL or empty means + * use DISPLAY envariable. */ + int *screenPtr; /* Where to store screen number. */ +{ + register TkDisplay *dispPtr; + char *p; + int screenId; + size_t length; + + /* + * Separate the screen number from the rest of the display + * name. ScreenName is assumed to have the syntax + * <display>.<screen> with the dot and the screen being + * optional. + */ + + screenName = TkGetDefaultScreenName(interp, screenName); + if (screenName == NULL) { + interp->result = + "no display name and no $DISPLAY environment variable"; + return (TkDisplay *) NULL; + } + length = strlen(screenName); + screenId = 0; + p = screenName+length-1; + while (isdigit(UCHAR(*p)) && (p != screenName)) { + p--; + } + if ((*p == '.') && (p[1] != '\0')) { + length = p - screenName; + screenId = strtoul(p+1, (char **) NULL, 10); + } + + /* + * See if we already have a connection to this display. If not, + * then open a new connection. + */ + + for (dispPtr = tkDisplayList; ; dispPtr = dispPtr->nextPtr) { + if (dispPtr == NULL) { + dispPtr = TkpOpenDisplay(screenName); + if (dispPtr == NULL) { + Tcl_AppendResult(interp, "couldn't connect to display \"", + screenName, "\"", (char *) NULL); + return (TkDisplay *) NULL; + } + dispPtr->nextPtr = tkDisplayList; + dispPtr->name = (char *) ckalloc((unsigned) (length+1)); + dispPtr->lastEventTime = CurrentTime; + strncpy(dispPtr->name, screenName, length); + dispPtr->name[length] = '\0'; + dispPtr->bindInfoStale = 1; + dispPtr->modeModMask = 0; + dispPtr->metaModMask = 0; + dispPtr->altModMask = 0; + dispPtr->numModKeyCodes = 0; + dispPtr->modKeyCodes = NULL; + OpenIM(dispPtr); + dispPtr->errorPtr = NULL; + dispPtr->deleteCount = 0; + dispPtr->commTkwin = NULL; + dispPtr->selectionInfoPtr = NULL; + dispPtr->multipleAtom = None; + dispPtr->clipWindow = NULL; + dispPtr->clipboardActive = 0; + dispPtr->clipboardAppPtr = NULL; + dispPtr->clipTargetPtr = NULL; + dispPtr->atomInit = 0; + dispPtr->cursorFont = None; + dispPtr->grabWinPtr = NULL; + dispPtr->eventualGrabWinPtr = NULL; + dispPtr->buttonWinPtr = NULL; + dispPtr->serverWinPtr = NULL; + dispPtr->firstGrabEventPtr = NULL; + dispPtr->lastGrabEventPtr = NULL; + dispPtr->grabFlags = 0; + TkInitXId(dispPtr); + dispPtr->destroyCount = 0; + dispPtr->lastDestroyRequest = 0; + dispPtr->cmapPtr = NULL; + dispPtr->implicitWinPtr = NULL; + dispPtr->focusPtr = NULL; + dispPtr->stressPtr = NULL; + dispPtr->delayedMotionPtr = NULL; + Tcl_InitHashTable(&dispPtr->winTable, TCL_ONE_WORD_KEYS); + dispPtr->refCount = 0; + + tkDisplayList = dispPtr; + break; + } + if ((strncmp(dispPtr->name, screenName, length) == 0) + && (dispPtr->name[length] == '\0')) { + break; + } + } + if (screenId >= ScreenCount(dispPtr->display)) { + sprintf(interp->result, "bad screen number \"%d\"", screenId); + return (TkDisplay *) NULL; + } + *screenPtr = screenId; + return dispPtr; +} + +/* + *---------------------------------------------------------------------- + * + * TkGetDisplay -- + * + * Given an X display, TkGetDisplay returns the TkDisplay + * structure for the display. + * + * Results: + * The return value is a pointer to information about the display, + * or NULL if the display did not have a TkDisplay structure. + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + +TkDisplay * +TkGetDisplay(display) + Display *display; /* X's display pointer */ +{ + TkDisplay *dispPtr; + + for (dispPtr = tkDisplayList; dispPtr != NULL; + dispPtr = dispPtr->nextPtr) { + if (dispPtr->display == display) { + break; + } + } + return dispPtr; +} + +/* + *-------------------------------------------------------------- + * + * TkAllocWindow -- + * + * This procedure creates and initializes a TkWindow structure. + * + * Results: + * The return value is a pointer to the new window. + * + * Side effects: + * A new window structure is allocated and all its fields are + * initialized. + * + *-------------------------------------------------------------- + */ + +TkWindow * +TkAllocWindow(dispPtr, screenNum, parentPtr) + TkDisplay *dispPtr; /* Display associated with new window. */ + int screenNum; /* Index of screen for new window. */ + TkWindow *parentPtr; /* Parent from which this window should + * inherit visual information. NULL means + * use screen defaults instead of + * inheriting. */ +{ + register TkWindow *winPtr; + + winPtr = (TkWindow *) ckalloc(sizeof(TkWindow)); + winPtr->display = dispPtr->display; + winPtr->dispPtr = dispPtr; + winPtr->screenNum = screenNum; + if ((parentPtr != NULL) && (parentPtr->display == winPtr->display) + && (parentPtr->screenNum == winPtr->screenNum)) { + winPtr->visual = parentPtr->visual; + winPtr->depth = parentPtr->depth; + } else { + winPtr->visual = DefaultVisual(dispPtr->display, screenNum); + winPtr->depth = DefaultDepth(dispPtr->display, screenNum); + } + winPtr->window = None; + winPtr->childList = NULL; + winPtr->lastChildPtr = NULL; + winPtr->parentPtr = NULL; + winPtr->nextPtr = NULL; + winPtr->mainPtr = NULL; + winPtr->pathName = NULL; + winPtr->nameUid = NULL; + winPtr->classUid = NULL; + winPtr->changes = defChanges; + winPtr->dirtyChanges = CWX|CWY|CWWidth|CWHeight|CWBorderWidth; + winPtr->atts = defAtts; + if ((parentPtr != NULL) && (parentPtr->display == winPtr->display) + && (parentPtr->screenNum == winPtr->screenNum)) { + winPtr->atts.colormap = parentPtr->atts.colormap; + } else { + winPtr->atts.colormap = DefaultColormap(dispPtr->display, screenNum); + } + winPtr->dirtyAtts = CWEventMask|CWColormap|CWBitGravity; + winPtr->flags = 0; + winPtr->handlerList = NULL; +#ifdef TK_USE_INPUT_METHODS + winPtr->inputContext = NULL; +#endif /* TK_USE_INPUT_METHODS */ + winPtr->tagPtr = NULL; + winPtr->numTags = 0; + winPtr->optionLevel = -1; + winPtr->selHandlerList = NULL; + winPtr->geomMgrPtr = NULL; + winPtr->geomData = NULL; + winPtr->reqWidth = winPtr->reqHeight = 1; + winPtr->internalBorderWidth = 0; + winPtr->wmInfoPtr = NULL; + winPtr->classProcsPtr = NULL; + winPtr->instanceData = NULL; + winPtr->privatePtr = NULL; + + return winPtr; +} + +/* + *---------------------------------------------------------------------- + * + * NameWindow -- + * + * This procedure is invoked to give a window a name and insert + * the window into the hierarchy associated with a particular + * application. + * + * Results: + * A standard Tcl return value. + * + * Side effects: + * See above. + * + *---------------------------------------------------------------------- + */ + +static int +NameWindow(interp, winPtr, parentPtr, name) + Tcl_Interp *interp; /* Interpreter to use for error reporting. */ + register TkWindow *winPtr; /* Window that is to be named and inserted. */ + TkWindow *parentPtr; /* Pointer to logical parent for winPtr + * (used for naming, options, etc.). */ + char *name; /* Name for winPtr; must be unique among + * parentPtr's children. */ +{ +#define FIXED_SIZE 200 + char staticSpace[FIXED_SIZE]; + char *pathName; + int new; + Tcl_HashEntry *hPtr; + int length1, length2; + + /* + * Setup all the stuff except name right away, then do the name stuff + * last. This is so that if the name stuff fails, everything else + * will be properly initialized (needed to destroy the window cleanly + * after the naming failure). + */ + winPtr->parentPtr = parentPtr; + winPtr->nextPtr = NULL; + if (parentPtr->childList == NULL) { + parentPtr->childList = winPtr; + } else { + parentPtr->lastChildPtr->nextPtr = winPtr; + } + parentPtr->lastChildPtr = winPtr; + winPtr->mainPtr = parentPtr->mainPtr; + winPtr->mainPtr->refCount++; + winPtr->nameUid = Tk_GetUid(name); + + /* + * Don't permit names that start with an upper-case letter: this + * will just cause confusion with class names in the option database. + */ + + if (isupper(UCHAR(name[0]))) { + Tcl_AppendResult(interp, + "window name starts with an upper-case letter: \"", + name, "\"", (char *) NULL); + return TCL_ERROR; + } + + /* + * To permit names of arbitrary length, must be prepared to malloc + * a buffer to hold the new path name. To run fast in the common + * case where names are short, use a fixed-size buffer on the + * stack. + */ + + length1 = strlen(parentPtr->pathName); + length2 = strlen(name); + if ((length1+length2+2) <= FIXED_SIZE) { + pathName = staticSpace; + } else { + pathName = (char *) ckalloc((unsigned) (length1+length2+2)); + } + if (length1 == 1) { + pathName[0] = '.'; + strcpy(pathName+1, name); + } else { + strcpy(pathName, parentPtr->pathName); + pathName[length1] = '.'; + strcpy(pathName+length1+1, name); + } + hPtr = Tcl_CreateHashEntry(&parentPtr->mainPtr->nameTable, pathName, &new); + if (pathName != staticSpace) { + ckfree(pathName); + } + if (!new) { + Tcl_AppendResult(interp, "window name \"", name, + "\" already exists in parent", (char *) NULL); + return TCL_ERROR; + } + Tcl_SetHashValue(hPtr, winPtr); + winPtr->pathName = Tcl_GetHashKey(&parentPtr->mainPtr->nameTable, hPtr); + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * + * TkCreateMainWindow -- + * + * Make a new main window. A main window is a special kind of + * top-level window used as the outermost window in an + * application. + * + * Results: + * The return value is a token for the new window, or NULL if + * an error prevented the new window from being created. If + * NULL is returned, an error message will be left in + * interp->result. + * + * Side effects: + * A new window structure is allocated locally; "interp" is + * associated with the window and registered for "send" commands + * under "baseName". BaseName may be extended with an instance + * number in the form "#2" if necessary to make it globally + * unique. Tk-related commands are bound into interp. + * + *---------------------------------------------------------------------- + */ + +Tk_Window +TkCreateMainWindow(interp, screenName, baseName) + Tcl_Interp *interp; /* Interpreter to use for error reporting. */ + char *screenName; /* Name of screen on which to create + * window. Empty or NULL string means + * use DISPLAY environment variable. */ + char *baseName; /* Base name for application; usually of the + * form "prog instance". */ +{ + Tk_Window tkwin; + int dummy; + int isSafe; + Tcl_HashEntry *hPtr; + register TkMainInfo *mainPtr; + register TkWindow *winPtr; + register TkCmd *cmdPtr; + + /* + * Panic if someone updated the TkWindow structure without + * also updating the Tk_FakeWin structure (or vice versa). + */ + + if (sizeof(TkWindow) != sizeof(Tk_FakeWin)) { + panic("TkWindow and Tk_FakeWin are not the same size"); + } + + /* + * Create the basic TkWindow structure. + */ + + tkwin = CreateTopLevelWindow(interp, (Tk_Window) NULL, baseName, + screenName); + if (tkwin == NULL) { + return NULL; + } + + /* + * Create the TkMainInfo structure for this application, and set + * up name-related information for the new window. + */ + + winPtr = (TkWindow *) tkwin; + mainPtr = (TkMainInfo *) ckalloc(sizeof(TkMainInfo)); + mainPtr->winPtr = winPtr; + mainPtr->refCount = 1; + mainPtr->interp = interp; + Tcl_InitHashTable(&mainPtr->nameTable, TCL_STRING_KEYS); + TkBindInit(mainPtr); + TkFontPkgInit(mainPtr); + mainPtr->tlFocusPtr = NULL; + mainPtr->displayFocusPtr = NULL; + mainPtr->optionRootPtr = NULL; + Tcl_InitHashTable(&mainPtr->imageTable, TCL_STRING_KEYS); + mainPtr->strictMotif = 0; + if (Tcl_LinkVar(interp, "tk_strictMotif", (char *) &mainPtr->strictMotif, + TCL_LINK_BOOLEAN) != TCL_OK) { + Tcl_ResetResult(interp); + } + mainPtr->nextPtr = tkMainWindowList; + tkMainWindowList = mainPtr; + winPtr->mainPtr = mainPtr; + hPtr = Tcl_CreateHashEntry(&mainPtr->nameTable, ".", &dummy); + Tcl_SetHashValue(hPtr, winPtr); + winPtr->pathName = Tcl_GetHashKey(&mainPtr->nameTable, hPtr); + + /* + * We have just created another Tk application; increment the refcount + * on the display pointer. + */ + + winPtr->dispPtr->refCount++; + + /* + * Register the interpreter for "send" purposes. + */ + + winPtr->nameUid = Tk_GetUid(Tk_SetAppName(tkwin, baseName)); + + /* + * Bind in Tk's commands. + */ + + isSafe = Tcl_IsSafe(interp); + for (cmdPtr = commands; cmdPtr->name != NULL; cmdPtr++) { + if ((cmdPtr->cmdProc == NULL) && (cmdPtr->objProc == NULL)) { + panic("TkCreateMainWindow: builtin command with NULL string and object procs"); + } + if (cmdPtr->cmdProc != NULL) { + Tcl_CreateCommand(interp, cmdPtr->name, cmdPtr->cmdProc, + (ClientData) tkwin, (void (*) _ANSI_ARGS_((ClientData))) NULL); + } else { + Tcl_CreateObjCommand(interp, cmdPtr->name, cmdPtr->objProc, + (ClientData) tkwin, NULL); + } + if (isSafe) { + if (!(cmdPtr->isSafe)) { + Tcl_HideCommand(interp, cmdPtr->name, cmdPtr->name); + } + } + } + + /* + * Set variables for the intepreter. + */ + + Tcl_SetVar(interp, "tk_patchLevel", TK_PATCH_LEVEL, TCL_GLOBAL_ONLY); + Tcl_SetVar(interp, "tk_version", TK_VERSION, TCL_GLOBAL_ONLY); + + numMainWindows++; + return tkwin; +} + +/* + *-------------------------------------------------------------- + * + * Tk_CreateWindow -- + * + * Create a new internal or top-level window as a child of an + * existing window. + * + * Results: + * The return value is a token for the new window. This + * is not the same as X's token for the window. If an error + * occurred in creating the window (e.g. no such display or + * screen), then an error message is left in interp->result and + * NULL is returned. + * + * Side effects: + * A new window structure is allocated locally. An X + * window is not initially created, but will be created + * the first time the window is mapped. + * + *-------------------------------------------------------------- + */ + +Tk_Window +Tk_CreateWindow(interp, parent, name, screenName) + Tcl_Interp *interp; /* Interpreter to use for error reporting. + * Interp->result is assumed to be + * initialized by the caller. */ + Tk_Window parent; /* Token for parent of new window. */ + char *name; /* Name for new window. Must be unique + * among parent's children. */ + char *screenName; /* If NULL, new window will be internal on + * same screen as its parent. If non-NULL, + * gives name of screen on which to create + * new window; window will be a top-level + * window. */ +{ + TkWindow *parentPtr = (TkWindow *) parent; + TkWindow *winPtr; + + if ((parentPtr != NULL) && (parentPtr->flags & TK_ALREADY_DEAD)) { + Tcl_AppendResult(interp, + "can't create window: parent has been destroyed", + (char *) NULL); + return NULL; + } else if ((parentPtr != NULL) && + (parentPtr->flags & TK_CONTAINER)) { + Tcl_AppendResult(interp, + "can't create window: its parent has -container = yes", + (char *) NULL); + return NULL; + } + if (screenName == NULL) { + winPtr = TkAllocWindow(parentPtr->dispPtr, parentPtr->screenNum, + parentPtr); + if (NameWindow(interp, winPtr, parentPtr, name) != TCL_OK) { + Tk_DestroyWindow((Tk_Window) winPtr); + return NULL; + } else { + return (Tk_Window) winPtr; + } + } else { + return CreateTopLevelWindow(interp, parent, name, screenName); + } +} + +/* + *---------------------------------------------------------------------- + * + * Tk_CreateWindowFromPath -- + * + * This procedure is similar to Tk_CreateWindow except that + * it uses a path name to create the window, rather than a + * parent and a child name. + * + * Results: + * The return value is a token for the new window. This + * is not the same as X's token for the window. If an error + * occurred in creating the window (e.g. no such display or + * screen), then an error message is left in interp->result and + * NULL is returned. + * + * Side effects: + * A new window structure is allocated locally. An X + * window is not initially created, but will be created + * the first time the window is mapped. + * + *---------------------------------------------------------------------- + */ + +Tk_Window +Tk_CreateWindowFromPath(interp, tkwin, pathName, screenName) + Tcl_Interp *interp; /* Interpreter to use for error reporting. + * Interp->result is assumed to be + * initialized by the caller. */ + Tk_Window tkwin; /* Token for any window in application + * that is to contain new window. */ + char *pathName; /* Path name for new window within the + * application of tkwin. The parent of + * this window must already exist, but + * the window itself must not exist. */ + char *screenName; /* If NULL, new window will be on same + * screen as its parent. If non-NULL, + * gives name of screen on which to create + * new window; window will be a top-level + * window. */ +{ +#define FIXED_SPACE 5 + char fixedSpace[FIXED_SPACE+1]; + char *p; + Tk_Window parent; + int numChars; + + /* + * Strip the parent's name out of pathName (it's everything up + * to the last dot). There are two tricky parts: (a) must + * copy the parent's name somewhere else to avoid modifying + * the pathName string (for large names, space for the copy + * will have to be malloc'ed); (b) must special-case the + * situation where the parent is ".". + */ + + p = strrchr(pathName, '.'); + if (p == NULL) { + Tcl_AppendResult(interp, "bad window path name \"", pathName, + "\"", (char *) NULL); + return NULL; + } + numChars = p-pathName; + if (numChars > FIXED_SPACE) { + p = (char *) ckalloc((unsigned) (numChars+1)); + } else { + p = fixedSpace; + } + if (numChars == 0) { + *p = '.'; + p[1] = '\0'; + } else { + strncpy(p, pathName, (size_t) numChars); + p[numChars] = '\0'; + } + + /* + * Find the parent window. + */ + + parent = Tk_NameToWindow(interp, p, tkwin); + if (p != fixedSpace) { + ckfree(p); + } + if (parent == NULL) { + return NULL; + } + if (((TkWindow *) parent)->flags & TK_ALREADY_DEAD) { + Tcl_AppendResult(interp, + "can't create window: parent has been destroyed", (char *) NULL); + return NULL; + } else if (((TkWindow *) parent)->flags & TK_CONTAINER) { + Tcl_AppendResult(interp, + "can't create window: its parent has -container = yes", + (char *) NULL); + return NULL; + } + + /* + * Create the window. + */ + + if (screenName == NULL) { + TkWindow *parentPtr = (TkWindow *) parent; + TkWindow *winPtr; + + winPtr = TkAllocWindow(parentPtr->dispPtr, parentPtr->screenNum, + parentPtr); + if (NameWindow(interp, winPtr, parentPtr, pathName+numChars+1) + != TCL_OK) { + Tk_DestroyWindow((Tk_Window) winPtr); + return NULL; + } else { + return (Tk_Window) winPtr; + } + } else { + return CreateTopLevelWindow(interp, parent, pathName+numChars+1, + screenName); + } +} + +/* + *-------------------------------------------------------------- + * + * Tk_DestroyWindow -- + * + * Destroy an existing window. After this call, the caller + * should never again use the token. + * + * Results: + * None. + * + * Side effects: + * The window is deleted, along with all of its children. + * Relevant callback procedures are invoked. + * + *-------------------------------------------------------------- + */ + +void +Tk_DestroyWindow(tkwin) + Tk_Window tkwin; /* Window to destroy. */ +{ + TkWindow *winPtr = (TkWindow *) tkwin; + TkDisplay *dispPtr = winPtr->dispPtr; + XEvent event; + + if (winPtr->flags & TK_ALREADY_DEAD) { + /* + * A destroy event binding caused the window to be destroyed + * again. Ignore the request. + */ + + return; + } + winPtr->flags |= TK_ALREADY_DEAD; + + /* + * Some cleanup needs to be done immediately, rather than later, + * because it needs information that will be destoyed before we + * get to the main cleanup point. For example, TkFocusDeadWindow + * needs to access the parentPtr field from a window, but if + * a Destroy event handler deletes the window's parent this + * field will be NULL before the main cleanup point is reached. + */ + + TkFocusDeadWindow(winPtr); + + /* + * If this is a main window, remove it from the list of main + * windows. This needs to be done now (rather than later with + * all the other main window cleanup) to handle situations where + * a destroy binding for a window calls "exit". In this case + * the child window cleanup isn't complete when exit is called, + * so the reference count of its application doesn't go to zero + * when exit calls Tk_DestroyWindow on ".", so the main window + * doesn't get removed from the list and exit loops infinitely. + * Even worse, if "destroy ." is called by the destroy binding + * before calling "exit", "exit" will attempt to destroy + * mainPtr->winPtr, which no longer exists, and there may be a + * core dump. + * + * Also decrement the display refcount so that if this is the + * last Tk application in this process on this display, the display + * can be closed and its data structures deleted. + */ + + if (winPtr->mainPtr->winPtr == winPtr) { + dispPtr->refCount--; + if (tkMainWindowList == winPtr->mainPtr) { + tkMainWindowList = winPtr->mainPtr->nextPtr; + } else { + TkMainInfo *prevPtr; + + for (prevPtr = tkMainWindowList; + prevPtr->nextPtr != winPtr->mainPtr; + prevPtr = prevPtr->nextPtr) { + /* Empty loop body. */ + } + prevPtr->nextPtr = winPtr->mainPtr->nextPtr; + } + numMainWindows--; + } + + /* + * Recursively destroy children. + */ + + dispPtr->destroyCount++; + while (winPtr->childList != NULL) { + TkWindow *childPtr; + childPtr = winPtr->childList; + childPtr->flags |= TK_DONT_DESTROY_WINDOW; + Tk_DestroyWindow((Tk_Window) childPtr); + if (winPtr->childList == childPtr) { + /* + * The child didn't remove itself from the child list, so + * let's remove it here. This can happen in some strange + * conditions, such as when a Delete event handler for a + * window deletes the window's parent. + */ + + winPtr->childList = childPtr->nextPtr; + childPtr->parentPtr = NULL; + } + } + if ((winPtr->flags & (TK_CONTAINER|TK_BOTH_HALVES)) + == (TK_CONTAINER|TK_BOTH_HALVES)) { + /* + * This is the container for an embedded application, and + * the embedded application is also in this process. Delete + * the embedded window in-line here, for the same reasons we + * delete children in-line (otherwise, for example, the Tk + * window may appear to exist even though its X window is + * gone; this could cause errors). Special note: it's possible + * that the embedded window has already been deleted, in which + * case TkpGetOtherWindow will return NULL. + */ + + TkWindow *childPtr; + childPtr = TkpGetOtherWindow(winPtr); + if (childPtr != NULL) { + childPtr->flags |= TK_DONT_DESTROY_WINDOW; + Tk_DestroyWindow((Tk_Window) childPtr); + } + } + + /* + * Generate a DestroyNotify event. In order for the DestroyNotify + * event to be processed correctly, need to make sure the window + * exists. This is a bit of a kludge, and may be unnecessarily + * expensive, but without it no event handlers will get called for + * windows that don't exist yet. + * + * Note: if the window's pathName is NULL it means that the window + * was not successfully initialized in the first place, so we should + * not make the window exist or generate the event. + */ + + if (winPtr->pathName != NULL) { + if (winPtr->window == None) { + Tk_MakeWindowExist(tkwin); + } + event.type = DestroyNotify; + event.xdestroywindow.serial = + LastKnownRequestProcessed(winPtr->display); + event.xdestroywindow.send_event = False; + event.xdestroywindow.display = winPtr->display; + event.xdestroywindow.event = winPtr->window; + event.xdestroywindow.window = winPtr->window; + Tk_HandleEvent(&event); + } + + /* + * Cleanup the data structures associated with this window. + */ + + if (winPtr->flags & TK_TOP_LEVEL) { + TkWmDeadWindow(winPtr); + } else if (winPtr->flags & TK_WM_COLORMAP_WINDOW) { + TkWmRemoveFromColormapWindows(winPtr); + } + if (winPtr->window != None) { +#if defined(MAC_TCL) || defined(__WIN32__) + XDestroyWindow(winPtr->display, winPtr->window); +#else + if ((winPtr->flags & TK_TOP_LEVEL) + || !(winPtr->flags & TK_DONT_DESTROY_WINDOW)) { + /* + * The parent has already been destroyed and this isn't + * a top-level window, so this window will be destroyed + * implicitly when the parent's X window is destroyed; + * it's much faster not to do an explicit destroy of this + * X window. + */ + + dispPtr->lastDestroyRequest = NextRequest(winPtr->display); + XDestroyWindow(winPtr->display, winPtr->window); + } +#endif + TkFreeWindowId(dispPtr, winPtr->window); + Tcl_DeleteHashEntry(Tcl_FindHashEntry(&dispPtr->winTable, + (char *) winPtr->window)); + winPtr->window = None; + } + dispPtr->destroyCount--; + UnlinkWindow(winPtr); + TkEventDeadWindow(winPtr); + TkBindDeadWindow(winPtr); +#ifdef TK_USE_INPUT_METHODS + if (winPtr->inputContext != NULL) { + XDestroyIC(winPtr->inputContext); + } +#endif /* TK_USE_INPUT_METHODS */ + if (winPtr->tagPtr != NULL) { + TkFreeBindingTags(winPtr); + } + TkOptionDeadWindow(winPtr); + TkSelDeadWindow(winPtr); + TkGrabDeadWindow(winPtr); + if (winPtr->mainPtr != NULL) { + if (winPtr->pathName != NULL) { + Tk_DeleteAllBindings(winPtr->mainPtr->bindingTable, + (ClientData) winPtr->pathName); + Tcl_DeleteHashEntry(Tcl_FindHashEntry(&winPtr->mainPtr->nameTable, + winPtr->pathName)); + } + winPtr->mainPtr->refCount--; + if (winPtr->mainPtr->refCount == 0) { + register TkCmd *cmdPtr; + + /* + * We just deleted the last window in the application. Delete + * the TkMainInfo structure too and replace all of Tk's commands + * with dummy commands that return errors. Also delete the + * "send" command to unregister the interpreter. + * + * NOTE: Only replace the commands it if the interpreter is + * not being deleted. If it *is*, the interpreter cleanup will + * do all the needed work. + */ + + if ((winPtr->mainPtr->interp != NULL) && + (!Tcl_InterpDeleted(winPtr->mainPtr->interp))) { + for (cmdPtr = commands; cmdPtr->name != NULL; cmdPtr++) { + Tcl_CreateCommand(winPtr->mainPtr->interp, cmdPtr->name, + TkDeadAppCmd, (ClientData) NULL, + (void (*) _ANSI_ARGS_((ClientData))) NULL); + } + Tcl_CreateCommand(winPtr->mainPtr->interp, "send", + TkDeadAppCmd, (ClientData) NULL, + (void (*) _ANSI_ARGS_((ClientData))) NULL); + Tcl_UnlinkVar(winPtr->mainPtr->interp, "tk_strictMotif"); + } + + Tcl_DeleteHashTable(&winPtr->mainPtr->nameTable); + TkBindFree(winPtr->mainPtr); + TkFontPkgFree(winPtr->mainPtr); + TkDeleteAllImages(winPtr->mainPtr); + + /* + * When embedding Tk into other applications, make sure + * that all destroy events reach the server. Otherwise + * the embedding application may also attempt to destroy + * the windows, resulting in an X error + */ + + if (winPtr->flags & TK_EMBEDDED) { + XSync(winPtr->display,False) ; + } + ckfree((char *) winPtr->mainPtr); + + /* + * If no other applications are using the display, close the + * display now and relinquish its data structures. + */ + + if (dispPtr->refCount <= 0) { +#ifdef NOT_YET + /* + * I have disabled this code because on Windows there are + * still order dependencies in close-down. All displays + * and resources will get closed down properly anyway at + * exit, through the exit handler. + */ + + TkDisplay *theDispPtr, *backDispPtr; + + /* + * Splice this display out of the list of displays. + */ + + for (theDispPtr = tkDisplayList, backDispPtr = NULL; + (theDispPtr != winPtr->dispPtr) && + (theDispPtr != NULL); + theDispPtr = theDispPtr->nextPtr) { + backDispPtr = theDispPtr; + } + if (theDispPtr == NULL) { + panic("could not find display to close!"); + } + if (backDispPtr == NULL) { + tkDisplayList = theDispPtr->nextPtr; + } else { + backDispPtr->nextPtr = theDispPtr->nextPtr; + } + + /* + * Found and spliced it out, now actually do the cleanup. + */ + + if (dispPtr->name != NULL) { + ckfree(dispPtr->name); + } + + Tcl_DeleteHashTable(&(dispPtr->winTable)); + + /* + * Cannot yet close the display because we still have + * order of deletion problems. Defer until exit handling + * instead. At that time, the display will cleanly shut + * down (hopefully..). (JYL) + */ + + TkpCloseDisplay(dispPtr); + + /* + * There is lots more to clean up, we leave it at this for + * the time being. + */ +#endif + } + } + } + ckfree((char *) winPtr); +} + +/* + *-------------------------------------------------------------- + * + * Tk_MapWindow -- + * + * Map a window within its parent. This may require the + * window and/or its parents to actually be created. + * + * Results: + * None. + * + * Side effects: + * The given window will be mapped. Windows may also + * be created. + * + *-------------------------------------------------------------- + */ + +void +Tk_MapWindow(tkwin) + Tk_Window tkwin; /* Token for window to map. */ +{ + register TkWindow *winPtr = (TkWindow *) tkwin; + XEvent event; + + if (winPtr->flags & TK_MAPPED) { + return; + } + if (winPtr->window == None) { + Tk_MakeWindowExist(tkwin); + } + if (winPtr->flags & TK_TOP_LEVEL) { + /* + * Lots of special processing has to be done for top-level + * windows. Let tkWm.c handle everything itself. + */ + + TkWmMapWindow(winPtr); + return; + } + winPtr->flags |= TK_MAPPED; + XMapWindow(winPtr->display, winPtr->window); + event.type = MapNotify; + event.xmap.serial = LastKnownRequestProcessed(winPtr->display); + event.xmap.send_event = False; + event.xmap.display = winPtr->display; + event.xmap.event = winPtr->window; + event.xmap.window = winPtr->window; + event.xmap.override_redirect = winPtr->atts.override_redirect; + Tk_HandleEvent(&event); +} + +/* + *-------------------------------------------------------------- + * + * Tk_MakeWindowExist -- + * + * Ensure that a particular window actually exists. This + * procedure shouldn't normally need to be invoked from + * outside the Tk package, but may be needed if someone + * wants to manipulate a window before mapping it. + * + * Results: + * None. + * + * Side effects: + * When the procedure returns, the X window associated with + * tkwin is guaranteed to exist. This may require the + * window's ancestors to be created also. + * + *-------------------------------------------------------------- + */ + +void +Tk_MakeWindowExist(tkwin) + Tk_Window tkwin; /* Token for window. */ +{ + register TkWindow *winPtr = (TkWindow *) tkwin; + TkWindow *winPtr2; + Window parent; + Tcl_HashEntry *hPtr; + int new; + + if (winPtr->window != None) { + return; + } + + if ((winPtr->parentPtr == NULL) || (winPtr->flags & TK_TOP_LEVEL)) { + parent = XRootWindow(winPtr->display, winPtr->screenNum); + } else { + if (winPtr->parentPtr->window == None) { + Tk_MakeWindowExist((Tk_Window) winPtr->parentPtr); + } + parent = winPtr->parentPtr->window; + } + + if (winPtr->classProcsPtr != NULL + && winPtr->classProcsPtr->createProc != NULL) { + winPtr->window = (*winPtr->classProcsPtr->createProc)(tkwin, parent, + winPtr->instanceData); + } else { + winPtr->window = TkpMakeWindow(winPtr, parent); + } + + hPtr = Tcl_CreateHashEntry(&winPtr->dispPtr->winTable, + (char *) winPtr->window, &new); + Tcl_SetHashValue(hPtr, winPtr); + winPtr->dirtyAtts = 0; + winPtr->dirtyChanges = 0; +#ifdef TK_USE_INPUT_METHODS + winPtr->inputContext = NULL; +#endif /* TK_USE_INPUT_METHODS */ + + if (!(winPtr->flags & TK_TOP_LEVEL)) { + /* + * If any siblings higher up in the stacking order have already + * been created then move this window to its rightful position + * in the stacking order. + * + * NOTE: this code ignores any changes anyone might have made + * to the sibling and stack_mode field of the window's attributes, + * so it really isn't safe for these to be manipulated except + * by calling Tk_RestackWindow. + */ + + for (winPtr2 = winPtr->nextPtr; winPtr2 != NULL; + winPtr2 = winPtr2->nextPtr) { + if ((winPtr2->window != None) + && !(winPtr2->flags & (TK_TOP_LEVEL|TK_REPARENTED))) { + XWindowChanges changes; + changes.sibling = winPtr2->window; + changes.stack_mode = Below; + XConfigureWindow(winPtr->display, winPtr->window, + CWSibling|CWStackMode, &changes); + break; + } + } + + /* + * If this window has a different colormap than its parent, add + * the window to the WM_COLORMAP_WINDOWS property for its top-level. + */ + + if ((winPtr->parentPtr != NULL) && + (winPtr->atts.colormap != winPtr->parentPtr->atts.colormap)) { + TkWmAddToColormapWindows(winPtr); + winPtr->flags |= TK_WM_COLORMAP_WINDOW; + } + } + + /* + * Issue a ConfigureNotify event if there were deferred configuration + * changes (but skip it if the window is being deleted; the + * ConfigureNotify event could cause problems if we're being called + * from Tk_DestroyWindow under some conditions). + */ + + if ((winPtr->flags & TK_NEED_CONFIG_NOTIFY) + && !(winPtr->flags & TK_ALREADY_DEAD)){ + winPtr->flags &= ~TK_NEED_CONFIG_NOTIFY; + TkDoConfigureNotify(winPtr); + } +} + +/* + *-------------------------------------------------------------- + * + * Tk_UnmapWindow, etc. -- + * + * There are several procedures under here, each of which + * mirrors an existing X procedure. In addition to performing + * the functions of the corresponding procedure, each + * procedure also updates the local window structure and + * synthesizes an X event (if the window's structure is being + * managed internally). + * + * Results: + * See the manual entries. + * + * Side effects: + * See the manual entries. + * + *-------------------------------------------------------------- + */ + +void +Tk_UnmapWindow(tkwin) + Tk_Window tkwin; /* Token for window to unmap. */ +{ + register TkWindow *winPtr = (TkWindow *) tkwin; + + if (!(winPtr->flags & TK_MAPPED) || (winPtr->flags & TK_ALREADY_DEAD)) { + return; + } + if (winPtr->flags & TK_TOP_LEVEL) { + /* + * Special processing has to be done for top-level windows. Let + * tkWm.c handle everything itself. + */ + + TkWmUnmapWindow(winPtr); + return; + } + winPtr->flags &= ~TK_MAPPED; + XUnmapWindow(winPtr->display, winPtr->window); + if (!(winPtr->flags & TK_TOP_LEVEL)) { + XEvent event; + + event.type = UnmapNotify; + event.xunmap.serial = LastKnownRequestProcessed(winPtr->display); + event.xunmap.send_event = False; + event.xunmap.display = winPtr->display; + event.xunmap.event = winPtr->window; + event.xunmap.window = winPtr->window; + event.xunmap.from_configure = False; + Tk_HandleEvent(&event); + } +} + +void +Tk_ConfigureWindow(tkwin, valueMask, valuePtr) + Tk_Window tkwin; /* Window to re-configure. */ + unsigned int valueMask; /* Mask indicating which parts of + * *valuePtr are to be used. */ + XWindowChanges *valuePtr; /* New values. */ +{ + register TkWindow *winPtr = (TkWindow *) tkwin; + + if (valueMask & CWX) { + winPtr->changes.x = valuePtr->x; + } + if (valueMask & CWY) { + winPtr->changes.y = valuePtr->y; + } + if (valueMask & CWWidth) { + winPtr->changes.width = valuePtr->width; + } + if (valueMask & CWHeight) { + winPtr->changes.height = valuePtr->height; + } + if (valueMask & CWBorderWidth) { + winPtr->changes.border_width = valuePtr->border_width; + } + if (valueMask & (CWSibling|CWStackMode)) { + panic("Can't set sibling or stack mode from Tk_ConfigureWindow."); + } + + if (winPtr->window != None) { + XConfigureWindow(winPtr->display, winPtr->window, + valueMask, valuePtr); + TkDoConfigureNotify(winPtr); + } else { + winPtr->dirtyChanges |= valueMask; + winPtr->flags |= TK_NEED_CONFIG_NOTIFY; + } +} + +void +Tk_MoveWindow(tkwin, x, y) + Tk_Window tkwin; /* Window to move. */ + int x, y; /* New location for window (within + * parent). */ +{ + register TkWindow *winPtr = (TkWindow *) tkwin; + + winPtr->changes.x = x; + winPtr->changes.y = y; + if (winPtr->window != None) { + XMoveWindow(winPtr->display, winPtr->window, x, y); + TkDoConfigureNotify(winPtr); + } else { + winPtr->dirtyChanges |= CWX|CWY; + winPtr->flags |= TK_NEED_CONFIG_NOTIFY; + } +} + +void +Tk_ResizeWindow(tkwin, width, height) + Tk_Window tkwin; /* Window to resize. */ + int width, height; /* New dimensions for window. */ +{ + register TkWindow *winPtr = (TkWindow *) tkwin; + + winPtr->changes.width = (unsigned) width; + winPtr->changes.height = (unsigned) height; + if (winPtr->window != None) { + XResizeWindow(winPtr->display, winPtr->window, (unsigned) width, + (unsigned) height); + TkDoConfigureNotify(winPtr); + } else { + winPtr->dirtyChanges |= CWWidth|CWHeight; + winPtr->flags |= TK_NEED_CONFIG_NOTIFY; + } +} + +void +Tk_MoveResizeWindow(tkwin, x, y, width, height) + Tk_Window tkwin; /* Window to move and resize. */ + int x, y; /* New location for window (within + * parent). */ + int width, height; /* New dimensions for window. */ +{ + register TkWindow *winPtr = (TkWindow *) tkwin; + + winPtr->changes.x = x; + winPtr->changes.y = y; + winPtr->changes.width = (unsigned) width; + winPtr->changes.height = (unsigned) height; + if (winPtr->window != None) { + XMoveResizeWindow(winPtr->display, winPtr->window, x, y, + (unsigned) width, (unsigned) height); + TkDoConfigureNotify(winPtr); + } else { + winPtr->dirtyChanges |= CWX|CWY|CWWidth|CWHeight; + winPtr->flags |= TK_NEED_CONFIG_NOTIFY; + } +} + +void +Tk_SetWindowBorderWidth(tkwin, width) + Tk_Window tkwin; /* Window to modify. */ + int width; /* New border width for window. */ +{ + register TkWindow *winPtr = (TkWindow *) tkwin; + + winPtr->changes.border_width = width; + if (winPtr->window != None) { + XSetWindowBorderWidth(winPtr->display, winPtr->window, + (unsigned) width); + TkDoConfigureNotify(winPtr); + } else { + winPtr->dirtyChanges |= CWBorderWidth; + winPtr->flags |= TK_NEED_CONFIG_NOTIFY; + } +} + +void +Tk_ChangeWindowAttributes(tkwin, valueMask, attsPtr) + Tk_Window tkwin; /* Window to manipulate. */ + unsigned long valueMask; /* OR'ed combination of bits, + * indicating which fields of + * *attsPtr are to be used. */ + register XSetWindowAttributes *attsPtr; + /* New values for some attributes. */ +{ + register TkWindow *winPtr = (TkWindow *) tkwin; + + if (valueMask & CWBackPixmap) { + winPtr->atts.background_pixmap = attsPtr->background_pixmap; + } + if (valueMask & CWBackPixel) { + winPtr->atts.background_pixel = attsPtr->background_pixel; + } + if (valueMask & CWBorderPixmap) { + winPtr->atts.border_pixmap = attsPtr->border_pixmap; + } + if (valueMask & CWBorderPixel) { + winPtr->atts.border_pixel = attsPtr->border_pixel; + } + if (valueMask & CWBitGravity) { + winPtr->atts.bit_gravity = attsPtr->bit_gravity; + } + if (valueMask & CWWinGravity) { + winPtr->atts.win_gravity = attsPtr->win_gravity; + } + if (valueMask & CWBackingStore) { + winPtr->atts.backing_store = attsPtr->backing_store; + } + if (valueMask & CWBackingPlanes) { + winPtr->atts.backing_planes = attsPtr->backing_planes; + } + if (valueMask & CWBackingPixel) { + winPtr->atts.backing_pixel = attsPtr->backing_pixel; + } + if (valueMask & CWOverrideRedirect) { + winPtr->atts.override_redirect = attsPtr->override_redirect; + } + if (valueMask & CWSaveUnder) { + winPtr->atts.save_under = attsPtr->save_under; + } + if (valueMask & CWEventMask) { + winPtr->atts.event_mask = attsPtr->event_mask; + } + if (valueMask & CWDontPropagate) { + winPtr->atts.do_not_propagate_mask + = attsPtr->do_not_propagate_mask; + } + if (valueMask & CWColormap) { + winPtr->atts.colormap = attsPtr->colormap; + } + if (valueMask & CWCursor) { + winPtr->atts.cursor = attsPtr->cursor; + } + + if (winPtr->window != None) { + XChangeWindowAttributes(winPtr->display, winPtr->window, + valueMask, attsPtr); + } else { + winPtr->dirtyAtts |= valueMask; + } +} + +void +Tk_SetWindowBackground(tkwin, pixel) + Tk_Window tkwin; /* Window to manipulate. */ + unsigned long pixel; /* Pixel value to use for + * window's background. */ +{ + register TkWindow *winPtr = (TkWindow *) tkwin; + + winPtr->atts.background_pixel = pixel; + + if (winPtr->window != None) { + XSetWindowBackground(winPtr->display, winPtr->window, pixel); + } else { + winPtr->dirtyAtts = (winPtr->dirtyAtts & (unsigned) ~CWBackPixmap) + | CWBackPixel; + } +} + +void +Tk_SetWindowBackgroundPixmap(tkwin, pixmap) + Tk_Window tkwin; /* Window to manipulate. */ + Pixmap pixmap; /* Pixmap to use for window's + * background. */ +{ + register TkWindow *winPtr = (TkWindow *) tkwin; + + winPtr->atts.background_pixmap = pixmap; + + if (winPtr->window != None) { + XSetWindowBackgroundPixmap(winPtr->display, + winPtr->window, pixmap); + } else { + winPtr->dirtyAtts = (winPtr->dirtyAtts & (unsigned) ~CWBackPixel) + | CWBackPixmap; + } +} + +void +Tk_SetWindowBorder(tkwin, pixel) + Tk_Window tkwin; /* Window to manipulate. */ + unsigned long pixel; /* Pixel value to use for + * window's border. */ +{ + register TkWindow *winPtr = (TkWindow *) tkwin; + + winPtr->atts.border_pixel = pixel; + + if (winPtr->window != None) { + XSetWindowBorder(winPtr->display, winPtr->window, pixel); + } else { + winPtr->dirtyAtts = (winPtr->dirtyAtts & (unsigned) ~CWBorderPixmap) + | CWBorderPixel; + } +} + +void +Tk_SetWindowBorderPixmap(tkwin, pixmap) + Tk_Window tkwin; /* Window to manipulate. */ + Pixmap pixmap; /* Pixmap to use for window's + * border. */ +{ + register TkWindow *winPtr = (TkWindow *) tkwin; + + winPtr->atts.border_pixmap = pixmap; + + if (winPtr->window != None) { + XSetWindowBorderPixmap(winPtr->display, + winPtr->window, pixmap); + } else { + winPtr->dirtyAtts = (winPtr->dirtyAtts & (unsigned) ~CWBorderPixel) + | CWBorderPixmap; + } +} + +void +Tk_DefineCursor(tkwin, cursor) + Tk_Window tkwin; /* Window to manipulate. */ + Tk_Cursor cursor; /* Cursor to use for window (may be None). */ +{ + register TkWindow *winPtr = (TkWindow *) tkwin; + +#ifdef MAC_TCL + winPtr->atts.cursor = (XCursor) cursor; +#else + winPtr->atts.cursor = (Cursor) cursor; +#endif + + if (winPtr->window != None) { + XDefineCursor(winPtr->display, winPtr->window, winPtr->atts.cursor); + } else { + winPtr->dirtyAtts = winPtr->dirtyAtts | CWCursor; + } +} + +void +Tk_UndefineCursor(tkwin) + Tk_Window tkwin; /* Window to manipulate. */ +{ + Tk_DefineCursor(tkwin, None); +} + +void +Tk_SetWindowColormap(tkwin, colormap) + Tk_Window tkwin; /* Window to manipulate. */ + Colormap colormap; /* Colormap to use for window. */ +{ + register TkWindow *winPtr = (TkWindow *) tkwin; + + winPtr->atts.colormap = colormap; + + if (winPtr->window != None) { + XSetWindowColormap(winPtr->display, winPtr->window, colormap); + if (!(winPtr->flags & TK_TOP_LEVEL)) { + TkWmAddToColormapWindows(winPtr); + winPtr->flags |= TK_WM_COLORMAP_WINDOW; + } + } else { + winPtr->dirtyAtts |= CWColormap; + } +} + +/* + *---------------------------------------------------------------------- + * + * Tk_SetWindowVisual -- + * + * This procedure is called to specify a visual to be used + * for a Tk window when it is created. This procedure, if + * called at all, must be called before the X window is created + * (i.e. before Tk_MakeWindowExist is called). + * + * Results: + * The return value is 1 if successful, or 0 if the X window has + * been already created. + * + * Side effects: + * The information given is stored for when the window is created. + * + *---------------------------------------------------------------------- + */ + +int +Tk_SetWindowVisual(tkwin, visual, depth, colormap) + Tk_Window tkwin; /* Window to manipulate. */ + Visual *visual; /* New visual for window. */ + int depth; /* New depth for window. */ + Colormap colormap; /* An appropriate colormap for the visual. */ +{ + register TkWindow *winPtr = (TkWindow *) tkwin; + + if( winPtr->window != None ){ + /* Too late! */ + return 0; + } + + winPtr->visual = visual; + winPtr->depth = depth; + winPtr->atts.colormap = colormap; + winPtr->dirtyAtts |= CWColormap; + + /* + * The following code is needed to make sure that the window doesn't + * inherit the parent's border pixmap, which would result in a BadMatch + * error. + */ + + if (!(winPtr->dirtyAtts & CWBorderPixmap)) { + winPtr->dirtyAtts |= CWBorderPixel; + } + return 1; +} + +/* + *---------------------------------------------------------------------- + * + * TkDoConfigureNotify -- + * + * Generate a ConfigureNotify event describing the current + * configuration of a window. + * + * Results: + * None. + * + * Side effects: + * An event is generated and processed by Tk_HandleEvent. + * + *---------------------------------------------------------------------- + */ + +void +TkDoConfigureNotify(winPtr) + register TkWindow *winPtr; /* Window whose configuration + * was just changed. */ +{ + XEvent event; + + event.type = ConfigureNotify; + event.xconfigure.serial = LastKnownRequestProcessed(winPtr->display); + event.xconfigure.send_event = False; + event.xconfigure.display = winPtr->display; + event.xconfigure.event = winPtr->window; + event.xconfigure.window = winPtr->window; + event.xconfigure.x = winPtr->changes.x; + event.xconfigure.y = winPtr->changes.y; + event.xconfigure.width = winPtr->changes.width; + event.xconfigure.height = winPtr->changes.height; + event.xconfigure.border_width = winPtr->changes.border_width; + if (winPtr->changes.stack_mode == Above) { + event.xconfigure.above = winPtr->changes.sibling; + } else { + event.xconfigure.above = None; + } + event.xconfigure.override_redirect = winPtr->atts.override_redirect; + Tk_HandleEvent(&event); +} + +/* + *---------------------------------------------------------------------- + * + * Tk_SetClass -- + * + * This procedure is used to give a window a class. + * + * Results: + * None. + * + * Side effects: + * A new class is stored for tkwin, replacing any existing + * class for it. + * + *---------------------------------------------------------------------- + */ + +void +Tk_SetClass(tkwin, className) + Tk_Window tkwin; /* Token for window to assign class. */ + char *className; /* New class for tkwin. */ +{ + register TkWindow *winPtr = (TkWindow *) tkwin; + + winPtr->classUid = Tk_GetUid(className); + if (winPtr->flags & TK_TOP_LEVEL) { + TkWmSetClass(winPtr); + } + TkOptionClassChanged(winPtr); +} + +/* + *---------------------------------------------------------------------- + * + * TkSetClassProcs -- + * + * This procedure is used to set the class procedures and + * instance data for a window. + * + * Results: + * None. + * + * Side effects: + * A new set of class procedures and instance data is stored + * for tkwin, replacing any existing values. + * + *---------------------------------------------------------------------- + */ + +void +TkSetClassProcs(tkwin, procs, instanceData) + Tk_Window tkwin; /* Token for window to modify. */ + TkClassProcs *procs; /* Class procs structure. */ + ClientData instanceData; /* Data to be passed to class procedures. */ +{ + register TkWindow *winPtr = (TkWindow *) tkwin; + + winPtr->classProcsPtr = procs; + winPtr->instanceData = instanceData; +} + +/* + *---------------------------------------------------------------------- + * + * Tk_NameToWindow -- + * + * Given a string name for a window, this procedure + * returns the token for the window, if there exists a + * window corresponding to the given name. + * + * Results: + * The return result is either a token for the window corresponding + * to "name", or else NULL to indicate that there is no such + * window. In this case, an error message is left in interp->result. + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + +Tk_Window +Tk_NameToWindow(interp, pathName, tkwin) + Tcl_Interp *interp; /* Where to report errors. */ + char *pathName; /* Path name of window. */ + Tk_Window tkwin; /* Token for window: name is assumed to + * belong to the same main window as tkwin. */ +{ + Tcl_HashEntry *hPtr; + + hPtr = Tcl_FindHashEntry(&((TkWindow *) tkwin)->mainPtr->nameTable, + pathName); + if (hPtr == NULL) { + Tcl_AppendResult(interp, "bad window path name \"", + pathName, "\"", (char *) NULL); + return NULL; + } + return (Tk_Window) Tcl_GetHashValue(hPtr); +} + +/* + *---------------------------------------------------------------------- + * + * Tk_IdToWindow -- + * + * Given an X display and window ID, this procedure returns the + * Tk token for the window, if there exists a Tk window corresponding + * to the given ID. + * + * Results: + * The return result is either a token for the window corresponding + * to the given X id, or else NULL to indicate that there is no such + * window. + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + +Tk_Window +Tk_IdToWindow(display, window) + Display *display; /* X display containing the window. */ + Window window; /* X window window id. */ +{ + TkDisplay *dispPtr; + Tcl_HashEntry *hPtr; + + for (dispPtr = tkDisplayList; ; dispPtr = dispPtr->nextPtr) { + if (dispPtr == NULL) { + return NULL; + } + if (dispPtr->display == display) { + break; + } + } + + hPtr = Tcl_FindHashEntry(&dispPtr->winTable, (char *) window); + if (hPtr == NULL) { + return NULL; + } + return (Tk_Window) Tcl_GetHashValue(hPtr); +} + +/* + *---------------------------------------------------------------------- + * + * Tk_DisplayName -- + * + * Return the textual name of a window's display. + * + * Results: + * The return value is the string name of the display associated + * with tkwin. + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + +char * +Tk_DisplayName(tkwin) + Tk_Window tkwin; /* Window whose display name is desired. */ +{ + return ((TkWindow *) tkwin)->dispPtr->name; +} + +/* + *---------------------------------------------------------------------- + * + * UnlinkWindow -- + * + * This procedure removes a window from the childList of its + * parent. + * + * Results: + * None. + * + * Side effects: + * The window is unlinked from its childList. + * + *---------------------------------------------------------------------- + */ + +static void +UnlinkWindow(winPtr) + TkWindow *winPtr; /* Child window to be unlinked. */ +{ + TkWindow *prevPtr; + + if (winPtr->parentPtr == NULL) { + return; + } + prevPtr = winPtr->parentPtr->childList; + if (prevPtr == winPtr) { + winPtr->parentPtr->childList = winPtr->nextPtr; + if (winPtr->nextPtr == NULL) { + winPtr->parentPtr->lastChildPtr = NULL; + } + } else { + while (prevPtr->nextPtr != winPtr) { + prevPtr = prevPtr->nextPtr; + if (prevPtr == NULL) { + panic("UnlinkWindow couldn't find child in parent"); + } + } + prevPtr->nextPtr = winPtr->nextPtr; + if (winPtr->nextPtr == NULL) { + winPtr->parentPtr->lastChildPtr = prevPtr; + } + } +} + +/* + *---------------------------------------------------------------------- + * + * Tk_RestackWindow -- + * + * Change a window's position in the stacking order. + * + * Results: + * TCL_OK is normally returned. If other is not a descendant + * of tkwin's parent then TCL_ERROR is returned and tkwin is + * not repositioned. + * + * Side effects: + * Tkwin is repositioned in the stacking order. + * + *---------------------------------------------------------------------- + */ + +int +Tk_RestackWindow(tkwin, aboveBelow, other) + Tk_Window tkwin; /* Token for window whose position in + * the stacking order is to change. */ + int aboveBelow; /* Indicates new position of tkwin relative + * to other; must be Above or Below. */ + Tk_Window other; /* Tkwin will be moved to a position that + * puts it just above or below this window. + * If NULL then tkwin goes above or below + * all windows in the same parent. */ +{ + TkWindow *winPtr = (TkWindow *) tkwin; + TkWindow *otherPtr = (TkWindow *) other; + XWindowChanges changes; + unsigned int mask; + + + /* + * Special case: if winPtr is a top-level window then just find + * the top-level ancestor of otherPtr and restack winPtr above + * otherPtr without changing any of Tk's childLists. + */ + + changes.stack_mode = aboveBelow; + mask = CWStackMode; + if (winPtr->flags & TK_TOP_LEVEL) { + while ((otherPtr != NULL) && !(otherPtr->flags & TK_TOP_LEVEL)) { + otherPtr = otherPtr->parentPtr; + } + TkWmRestackToplevel(winPtr, aboveBelow, otherPtr); + return TCL_OK; + } + + /* + * Find an ancestor of otherPtr that is a sibling of winPtr. + */ + + if (winPtr->parentPtr == NULL) { + /* + * Window is going to be deleted shortly; don't do anything. + */ + + return TCL_OK; + } + if (otherPtr == NULL) { + if (aboveBelow == Above) { + otherPtr = winPtr->parentPtr->lastChildPtr; + } else { + otherPtr = winPtr->parentPtr->childList; + } + } else { + while (winPtr->parentPtr != otherPtr->parentPtr) { + if ((otherPtr == NULL) || (otherPtr->flags & TK_TOP_LEVEL)) { + return TCL_ERROR; + } + otherPtr = otherPtr->parentPtr; + } + } + if (otherPtr == winPtr) { + return TCL_OK; + } + + /* + * Reposition winPtr in the stacking order. + */ + + UnlinkWindow(winPtr); + if (aboveBelow == Above) { + winPtr->nextPtr = otherPtr->nextPtr; + if (winPtr->nextPtr == NULL) { + winPtr->parentPtr->lastChildPtr = winPtr; + } + otherPtr->nextPtr = winPtr; + } else { + TkWindow *prevPtr; + + prevPtr = winPtr->parentPtr->childList; + if (prevPtr == otherPtr) { + winPtr->parentPtr->childList = winPtr; + } else { + while (prevPtr->nextPtr != otherPtr) { + prevPtr = prevPtr->nextPtr; + } + prevPtr->nextPtr = winPtr; + } + winPtr->nextPtr = otherPtr; + } + + /* + * Notify the X server of the change. If winPtr hasn't yet been + * created then there's no need to tell the X server now, since + * the stacking order will be handled properly when the window + * is finally created. + */ + + if (winPtr->window != None) { + changes.stack_mode = Above; + for (otherPtr = winPtr->nextPtr; otherPtr != NULL; + otherPtr = otherPtr->nextPtr) { + if ((otherPtr->window != None) + && !(otherPtr->flags & (TK_TOP_LEVEL|TK_REPARENTED))){ + changes.sibling = otherPtr->window; + changes.stack_mode = Below; + mask = CWStackMode|CWSibling; + break; + } + } + XConfigureWindow(winPtr->display, winPtr->window, mask, &changes); + } + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * + * Tk_MainWindow -- + * + * Returns the main window for an application. + * + * Results: + * If interp has a Tk application associated with it, the main + * window for the application is returned. Otherwise NULL is + * returned and an error message is left in interp->result. + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + +Tk_Window +Tk_MainWindow(interp) + Tcl_Interp *interp; /* Interpreter that embodies the + * application. Used for error + * reporting also. */ +{ + TkMainInfo *mainPtr; + + for (mainPtr = tkMainWindowList; mainPtr != NULL; + mainPtr = mainPtr->nextPtr) { + if (mainPtr->interp == interp) { + return (Tk_Window) mainPtr->winPtr; + } + } + interp->result = "this isn't a Tk application"; + return NULL; +} + +/* + *---------------------------------------------------------------------- + * + * Tk_StrictMotif -- + * + * Indicates whether strict Motif compliance has been specified + * for the given window. + * + * Results: + * The return value is 1 if strict Motif compliance has been + * requested for tkwin's application by setting the tk_strictMotif + * variable in its interpreter to a true value. 0 is returned + * if tk_strictMotif has a false value. + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + +int +Tk_StrictMotif(tkwin) + Tk_Window tkwin; /* Window whose application is + * to be checked. */ +{ + return ((TkWindow *) tkwin)->mainPtr->strictMotif; +} + +/* + *-------------------------------------------------------------- + * + * OpenIM -- + * + * Tries to open an X input method, associated with the + * given display. Right now we can only deal with a bare-bones + * input style: no preedit, and no status. + * + * Results: + * Stores the input method in dispPtr->inputMethod; if there isn't + * a suitable input method, then NULL is stored in dispPtr->inputMethod. + * + * Side effects: + * An input method gets opened. + * + *-------------------------------------------------------------- + */ + +static void +OpenIM(dispPtr) + TkDisplay *dispPtr; /* Tk's structure for the display. */ +{ +#ifndef TK_USE_INPUT_METHODS + return; +#else + unsigned short i; + XIMStyles *stylePtr; + + dispPtr->inputMethod = XOpenIM(dispPtr->display, NULL, NULL, NULL); + if (dispPtr->inputMethod == NULL) { + return; + } + + if ((XGetIMValues(dispPtr->inputMethod, XNQueryInputStyle, &stylePtr, + NULL) != NULL) || (stylePtr == NULL)) { + goto error; + } + for (i = 0; i < stylePtr->count_styles; i++) { + if (stylePtr->supported_styles[i] + == (XIMPreeditNothing|XIMStatusNothing)) { + XFree(stylePtr); + return; + } + } + XFree(stylePtr); + + error: + + /* + * Should close the input method, but this causes core dumps on some + * systems (e.g. Solaris 2.3 as of 1/6/95). + * XCloseIM(dispPtr->inputMethod); + */ + dispPtr->inputMethod = NULL; + return; +#endif /* TK_USE_INPUT_METHODS */ +} + +/* + *---------------------------------------------------------------------- + * + * Tk_GetNumMainWindows -- + * + * This procedure returns the number of main windows currently + * open in this process. + * + * Results: + * The number of main windows open in this process. + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + +int +Tk_GetNumMainWindows() +{ + return numMainWindows; +} + +/* + *---------------------------------------------------------------------- + * + * DeleteWindowsExitProc -- + * + * This procedure is invoked as an exit handler. It deletes all + * of the main windows in the process. + * + * Results: + * None. + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + +static void +DeleteWindowsExitProc(clientData) + ClientData clientData; /* Not used. */ +{ + TkDisplay *displayPtr, *nextPtr; + Tcl_Interp *interp; + + while (tkMainWindowList != NULL) { + /* + * We must protect the interpreter while deleting the window, + * because of <Destroy> bindings which could destroy the interpreter + * while the window is being deleted. This would leave frames on + * the call stack pointing at deleted memory, causing core dumps. + */ + + interp = tkMainWindowList->winPtr->mainPtr->interp; + Tcl_Preserve((ClientData) interp); + Tk_DestroyWindow((Tk_Window) tkMainWindowList->winPtr); + Tcl_Release((ClientData) interp); + } + + displayPtr = tkDisplayList; + tkDisplayList = NULL; + + /* + * Iterate destroying the displays until no more displays remain. + * It is possible for displays to get recreated during exit by any + * code that calls GetScreen, so we must destroy these new displays + * as well as the old ones. + */ + + for (displayPtr = tkDisplayList; + displayPtr != NULL; + displayPtr = tkDisplayList) { + + /* + * Now iterate over the current list of open displays, and first + * set the global pointer to NULL so we will be able to notice if + * any new displays got created during deletion of the current set. + * We must also do this to ensure that Tk_IdToWindow does not find + * the old display as it is being destroyed, when it wants to see + * if it needs to dispatch a message. + */ + + for (tkDisplayList = NULL; displayPtr != NULL; displayPtr = nextPtr) { + nextPtr = displayPtr->nextPtr; + if (displayPtr->name != (char *) NULL) { + ckfree(displayPtr->name); + } + Tcl_DeleteHashTable(&(displayPtr->winTable)); + TkpCloseDisplay(displayPtr); + } + } + + numMainWindows = 0; + tkMainWindowList = NULL; + initialized = 0; + tkDisabledUid = NULL; + tkActiveUid = NULL; + tkNormalUid = NULL; +} + +/* + *---------------------------------------------------------------------- + * + * Tk_Init -- + * + * This procedure is invoked to add Tk to an interpreter. It + * incorporates all of Tk's commands into the interpreter and + * creates the main window for a new Tk application. If the + * interpreter contains a variable "argv", this procedure + * extracts several arguments from that variable, uses them + * to configure the main window, and modifies argv to exclude + * the arguments (see the "wish" documentation for a list of + * the arguments that are extracted). + * + * Results: + * Returns a standard Tcl completion code and sets interp->result + * if there is an error. + * + * Side effects: + * Depends on various initialization scripts that get invoked. + * + *---------------------------------------------------------------------- + */ + +int +Tk_Init(interp) + Tcl_Interp *interp; /* Interpreter to initialize. */ +{ + return Initialize(interp); +} + +/* + *---------------------------------------------------------------------- + * + * Tk_SafeInit -- + * + * This procedure is invoked to add Tk to a safe interpreter. It + * invokes the internal procedure that does the real work. + * + * Results: + * Returns a standard Tcl completion code and sets interp->result + * if there is an error. + * + * Side effects: + * Depends on various initialization scripts that are invoked. + * + *---------------------------------------------------------------------- + */ + +int +Tk_SafeInit(interp) + Tcl_Interp *interp; /* Interpreter to initialize. */ +{ + /* + * Initialize the interpreter with Tk, safely. This removes + * all the Tk commands that are unsafe. + * + * Rationale: + * + * - Toplevel and menu are unsafe because they can be used to cover + * the entire screen and to steal input from the user. + * - Continuous ringing of the bell is a nuisance. + * - Cannot allow access to the clipboard because a malicious script + * can replace the contents with the string "rm -r *" and lead to + * surprises when the contents of the clipboard are pasted. We do + * not currently hide the selection command.. Should we? + * - Cannot allow send because it can be used to cause unsafe + * interpreters to execute commands. The tk command recreates the + * send command, so that too must be hidden. + * - Focus can be used to grab the focus away from another window, + * in effect stealing user input. Cannot allow that. + * NOTE: We currently do *not* hide focus as it would make it + * impossible to provide keyboard input to Tk in a safe interpreter. + * - Grab can be used to block the user from using any other apps + * on the screen. + * - Tkwait can block the containing process forever. Use bindings, + * fileevents and split the protocol into before-the-wait and + * after-the-wait parts. More work but necessary. + * - Wm is unsafe because (if toplevels are allowed, in the future) + * it can be used to remove decorations, move windows around, cover + * the entire screen etc etc. + * + * Current risks: + * + * - No CPU time limit, no memory allocation limits, no color limits. + * + * The actual code called is the same as Tk_Init but Tcl_IsSafe() + * is checked at several places to differentiate the two initialisations. + */ + + return Initialize(interp); +} + +/* + *---------------------------------------------------------------------- + * + * Initialize -- + * + * + * Results: + * A standard Tcl result. Also leaves an error message in interp->result + * if there was an error. + * + * Side effects: + * Depends on the initialization scripts that are invoked. + * + *---------------------------------------------------------------------- + */ + +static int +Initialize(interp) + Tcl_Interp *interp; /* Interpreter to initialize. */ +{ + char *p; + int argc, code; + char **argv, *args[20]; + Tcl_DString class; + char buffer[30]; + + /* + * Start by initializing all the static variables to default acceptable + * values so that no information is leaked from a previous run of this + * code. + */ + + synchronize = 0; + name = NULL; + display = NULL; + geometry = NULL; + colormap = NULL; + use = NULL; + visual = NULL; + rest = 0; + + /* + * If there is an "argv" variable, get its value, extract out + * relevant arguments from it, and rewrite the variable without + * the arguments that we used. + */ + + p = Tcl_GetVar2(interp, "argv", (char *) NULL, TCL_GLOBAL_ONLY); + argv = NULL; + if (p != NULL) { + if (Tcl_SplitList(interp, p, &argc, &argv) != TCL_OK) { + argError: + Tcl_AddErrorInfo(interp, + "\n (processing arguments in argv variable)"); + return TCL_ERROR; + } + if (Tk_ParseArgv(interp, (Tk_Window) NULL, &argc, argv, + argTable, TK_ARGV_DONT_SKIP_FIRST_ARG|TK_ARGV_NO_DEFAULTS) + != TCL_OK) { + ckfree((char *) argv); + goto argError; + } + p = Tcl_Merge(argc, argv); + Tcl_SetVar2(interp, "argv", (char *) NULL, p, TCL_GLOBAL_ONLY); + sprintf(buffer, "%d", argc); + Tcl_SetVar2(interp, "argc", (char *) NULL, buffer, TCL_GLOBAL_ONLY); + ckfree(p); + } + + /* + * Figure out the application's name and class. + */ + + Tcl_DStringInit(&class); + if (name == NULL) { + int offset; + TkpGetAppName(interp, &class); + offset = Tcl_DStringLength(&class)+1; + Tcl_DStringSetLength(&class, offset); + Tcl_DStringAppend(&class, Tcl_DStringValue(&class), offset-1); + name = Tcl_DStringValue(&class) + offset; + } else { + Tcl_DStringAppend(&class, name, -1); + } + + p = Tcl_DStringValue(&class); + if (islower(UCHAR(*p))) { + *p = toupper(UCHAR(*p)); + } + + /* + * Create an argument list for creating the top-level window, + * using the information parsed from argv, if any. + */ + + args[0] = "toplevel"; + args[1] = "."; + args[2] = "-class"; + args[3] = Tcl_DStringValue(&class); + argc = 4; + if (display != NULL) { + args[argc] = "-screen"; + args[argc+1] = display; + argc += 2; + + /* + * If this is the first application for this process, save + * the display name in the DISPLAY environment variable so + * that it will be available to subprocesses created by us. + */ + + if (numMainWindows == 0) { + Tcl_SetVar2(interp, "env", "DISPLAY", display, TCL_GLOBAL_ONLY); + } + } + if (colormap != NULL) { + args[argc] = "-colormap"; + args[argc+1] = colormap; + argc += 2; + colormap = NULL; + } + if (use != NULL) { + args[argc] = "-use"; + args[argc+1] = use; + argc += 2; + use = NULL; + } + if (visual != NULL) { + args[argc] = "-visual"; + args[argc+1] = visual; + argc += 2; + visual = NULL; + } + args[argc] = NULL; + code = TkCreateFrame((ClientData) NULL, interp, argc, args, 1, name); + + Tcl_DStringFree(&class); + if (code != TCL_OK) { + goto done; + } + Tcl_ResetResult(interp); + if (synchronize) { + XSynchronize(Tk_Display(Tk_MainWindow(interp)), True); + } + + /* + * Set the geometry of the main window, if requested. Put the + * requested geometry into the "geometry" variable. + */ + + if (geometry != NULL) { + Tcl_SetVar(interp, "geometry", geometry, TCL_GLOBAL_ONLY); + code = Tcl_VarEval(interp, "wm geometry . ", geometry, (char *) NULL); + if (code != TCL_OK) { + goto done; + } + geometry = NULL; + } + if (Tcl_PkgRequire(interp, "Tcl", TCL_VERSION, 1) == NULL) { + code = TCL_ERROR; + goto done; + } + code = Tcl_PkgProvide(interp, "Tk", TK_VERSION); + if (code != TCL_OK) { + goto done; + } + + /* + * Invoke platform-specific initialization. + */ + + code = TkpInit(interp); + + done: + if (argv != NULL) { + ckfree((char *) argv); + } + return code; +} |