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tkWindow.c
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tkWindow.c
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/*
* tkWindow.c --
*
* This file provides basic window-manipulation functions, which are
* equivalent to functions 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.
*/
#include "tkInt.h"
#if !( defined(__WIN32__) || defined(MAC_OSX_TK))
#include "tkUnixInt.h"
#endif
/*
* Type used to keep track of Window objects that were only partially
* deallocated by Tk_DestroyWindow.
*/
#define HD_CLEANUP 1
#define HD_FOCUS 2
#define HD_MAIN_WIN 4
#define HD_DESTROY_COUNT 8
#define HD_DESTROY_EVENT 0x10
typedef struct TkHalfdeadWindow {
int flags;
struct TkWindow *winPtr;
struct TkHalfdeadWindow *nextPtr;
} TkHalfdeadWindow;
typedef struct ThreadSpecificData {
int numMainWindows; /* Count of numver of main windows currently
* open in this thread. */
TkMainInfo *mainWindowList;
/* First in list of all main windows managed
* by this thread. */
TkHalfdeadWindow *halfdeadWindowList;
/* First in list of partially deallocated
* windows. */
TkDisplay *displayList; /* List of all displays currently in use by
* the current thread. */
int initialized; /* 0 means the structures above need
* initializing. */
} ThreadSpecificData;
static Tcl_ThreadDataKey dataKey;
/*
* The Mutex below is used to lock access to the Tk_Uid structs above.
*/
TCL_DECLARE_MUTEX(windowMutex)
/*
* 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 const 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 const 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 functions that execute them.
*/
#define ISSAFE 1
#define PASSMAINWINDOW 2
typedef int (TkInitProc)(Tcl_Interp *interp, ClientData clientData);
typedef struct {
const char *name; /* Name of command. */
Tcl_CmdProc *cmdProc; /* Command's string-based function. */
Tcl_ObjCmdProc *objProc; /* Command's object-based function. */
TkInitProc *initProc; /* Command's initialization function */
int flags;
} TkCmd;
static const TkCmd commands[] = {
/*
* Commands that are part of the intrinsics:
*/
{"bell", NULL, Tk_BellObjCmd, NULL, PASSMAINWINDOW},
{"bind", NULL, Tk_BindObjCmd, NULL, PASSMAINWINDOW|ISSAFE},
{"bindtags", NULL, Tk_BindtagsObjCmd, NULL, PASSMAINWINDOW|ISSAFE},
{"clipboard", NULL, Tk_ClipboardObjCmd, NULL, PASSMAINWINDOW},
{"destroy", NULL, Tk_DestroyObjCmd, NULL, PASSMAINWINDOW|ISSAFE},
{"event", NULL, Tk_EventObjCmd, NULL, PASSMAINWINDOW|ISSAFE},
{"focus", NULL, Tk_FocusObjCmd, NULL, PASSMAINWINDOW|ISSAFE},
{"font", NULL, Tk_FontObjCmd, NULL, PASSMAINWINDOW|ISSAFE},
{"grab", NULL, Tk_GrabObjCmd, NULL, PASSMAINWINDOW},
{"grid", NULL, Tk_GridObjCmd, NULL, PASSMAINWINDOW|ISSAFE},
{"image", NULL, Tk_ImageObjCmd, NULL, PASSMAINWINDOW|ISSAFE},
{"lower", NULL, Tk_LowerObjCmd, NULL, PASSMAINWINDOW|ISSAFE},
{"option", NULL, Tk_OptionObjCmd, NULL, PASSMAINWINDOW|ISSAFE},
{"pack", NULL, Tk_PackObjCmd, NULL, PASSMAINWINDOW|ISSAFE},
{"place", NULL, Tk_PlaceObjCmd, NULL, PASSMAINWINDOW|ISSAFE},
{"raise", NULL, Tk_RaiseObjCmd, NULL, PASSMAINWINDOW|ISSAFE},
{"selection", NULL, Tk_SelectionObjCmd, NULL, PASSMAINWINDOW},
{"tk", NULL, NULL, TkInitTkCmd, PASSMAINWINDOW|ISSAFE},
{"tkwait", NULL, Tk_TkwaitObjCmd, NULL, PASSMAINWINDOW|ISSAFE},
{"update", NULL, Tk_UpdateObjCmd, NULL, PASSMAINWINDOW|ISSAFE},
{"winfo", NULL, Tk_WinfoObjCmd, NULL, PASSMAINWINDOW|ISSAFE},
{"wm", NULL, Tk_WmObjCmd, NULL, PASSMAINWINDOW},
/*
* Default widget class commands.
*/
{"button", NULL, Tk_ButtonObjCmd, NULL, ISSAFE},
{"canvas", NULL, Tk_CanvasObjCmd, NULL, PASSMAINWINDOW|ISSAFE},
{"checkbutton", NULL, Tk_CheckbuttonObjCmd, NULL, ISSAFE},
{"entry", NULL, Tk_EntryObjCmd, NULL, ISSAFE},
{"frame", NULL, Tk_FrameObjCmd, NULL, ISSAFE},
{"label", NULL, Tk_LabelObjCmd, NULL, ISSAFE},
{"labelframe", NULL, Tk_LabelframeObjCmd, NULL, ISSAFE},
{"listbox", NULL, Tk_ListboxObjCmd, NULL, ISSAFE},
{"menubutton", NULL, Tk_MenubuttonObjCmd, NULL, ISSAFE},
{"message", NULL, Tk_MessageObjCmd, NULL, ISSAFE},
{"panedwindow", NULL, Tk_PanedWindowObjCmd, NULL, ISSAFE},
{"radiobutton", NULL, Tk_RadiobuttonObjCmd, NULL, ISSAFE},
{"scale", NULL, Tk_ScaleObjCmd, NULL, ISSAFE},
{"scrollbar", Tk_ScrollbarCmd,NULL, NULL, PASSMAINWINDOW|ISSAFE},
{"spinbox", NULL, Tk_SpinboxObjCmd, NULL, ISSAFE},
{"text", NULL, Tk_TextObjCmd, NULL, PASSMAINWINDOW|ISSAFE},
{"toplevel", NULL, Tk_ToplevelObjCmd, NULL, 0},
/*
* Classic widget class commands.
*/
{"::tk::button", NULL, Tk_ButtonObjCmd, NULL, ISSAFE},
{"::tk::canvas", NULL, Tk_CanvasObjCmd, NULL, PASSMAINWINDOW|ISSAFE},
{"::tk::checkbutton",NULL, Tk_CheckbuttonObjCmd, NULL, ISSAFE},
{"::tk::entry", NULL, Tk_EntryObjCmd, NULL, ISSAFE},
{"::tk::frame", NULL, Tk_FrameObjCmd, NULL, ISSAFE},
{"::tk::label", NULL, Tk_LabelObjCmd, NULL, ISSAFE},
{"::tk::labelframe",NULL, Tk_LabelframeObjCmd, NULL, ISSAFE},
{"::tk::listbox", NULL, Tk_ListboxObjCmd, NULL, ISSAFE},
{"::tk::menubutton",NULL, Tk_MenubuttonObjCmd, NULL, ISSAFE},
{"::tk::message", NULL, Tk_MessageObjCmd, NULL, ISSAFE},
{"::tk::panedwindow",NULL, Tk_PanedWindowObjCmd, NULL, ISSAFE},
{"::tk::radiobutton",NULL, Tk_RadiobuttonObjCmd, NULL, ISSAFE},
{"::tk::scale", NULL, Tk_ScaleObjCmd, NULL, ISSAFE},
{"::tk::scrollbar", Tk_ScrollbarCmd,NULL, NULL, PASSMAINWINDOW|ISSAFE},
{"::tk::spinbox", NULL, Tk_SpinboxObjCmd, NULL, ISSAFE},
{"::tk::text", NULL, Tk_TextObjCmd, NULL, PASSMAINWINDOW|ISSAFE},
{"::tk::toplevel", NULL, Tk_ToplevelObjCmd, NULL, 0},
/*
* Standard dialog support. Note that the Unix/X11 platform implements
* these commands differently (via the script library).
*/
#if defined(__WIN32__) || defined(MAC_OSX_TK)
{"tk_chooseColor", NULL, Tk_ChooseColorObjCmd, NULL, PASSMAINWINDOW},
{"tk_chooseDirectory", NULL, Tk_ChooseDirectoryObjCmd,NULL,PASSMAINWINDOW},
{"tk_getOpenFile", NULL, Tk_GetOpenFileObjCmd, NULL, PASSMAINWINDOW},
{"tk_getSaveFile", NULL, Tk_GetSaveFileObjCmd, NULL, PASSMAINWINDOW},
{"tk_messageBox", NULL, Tk_MessageBoxObjCmd, NULL, PASSMAINWINDOW},
#endif
/*
* Misc.
*/
#if defined(MAC_OSX_TK)
{"::tk::unsupported::MacWindowStyle",
NULL, TkUnsupported1ObjCmd, NULL, PASSMAINWINDOW|ISSAFE},
#endif
{NULL, NULL, 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 const Tk_ArgvInfo argTable[] = {
{"-colormap", TK_ARGV_STRING, NULL, (char *) &colormap,
"Colormap for main window"},
{"-display", TK_ARGV_STRING, NULL, (char *) &display,
"Display to use"},
{"-geometry", TK_ARGV_STRING, NULL, (char *) &geometry,
"Initial geometry for window"},
{"-name", TK_ARGV_STRING, 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, NULL, (char *) &visual,
"Visual for main window"},
{"-use", TK_ARGV_STRING, 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"},
{NULL, TK_ARGV_END, NULL, NULL, NULL}
};
/*
* Forward declarations to functions defined later in this file:
*/
static Tk_Window CreateTopLevelWindow(Tcl_Interp *interp,
Tk_Window parent, const char *name,
const char *screenName, unsigned int flags);
static void DeleteWindowsExitProc(ClientData clientData);
static TkDisplay * GetScreen(Tcl_Interp *interp, const char *screenName,
int *screenPtr);
static int Initialize(Tcl_Interp *interp);
static int NameWindow(Tcl_Interp *interp, TkWindow *winPtr,
TkWindow *parentPtr, const char *name);
static void UnlinkWindow(TkWindow *winPtr);
/*
*----------------------------------------------------------------------
*
* TkCloseDisplay --
*
* Closing the display can lead to order of deletion problems. We defer
* it until exit handling for Mac/Win, but since Unix can use many
* displays, try and clean it up as best as possible.
*
* Results:
* None.
*
* Side effects:
* Resources associated with the display will be free. The display may
* not be referenced at all after this.
*
*----------------------------------------------------------------------
*/
static void
TkCloseDisplay(
TkDisplay *dispPtr)
{
TkClipCleanup(dispPtr);
if (dispPtr->name != NULL) {
ckfree(dispPtr->name);
}
if (dispPtr->atomInit) {
Tcl_DeleteHashTable(&dispPtr->nameTable);
Tcl_DeleteHashTable(&dispPtr->atomTable);
dispPtr->atomInit = 0;
}
if (dispPtr->errorPtr != NULL) {
TkErrorHandler *errorPtr;
for (errorPtr = dispPtr->errorPtr;
errorPtr != NULL;
errorPtr = dispPtr->errorPtr) {
dispPtr->errorPtr = errorPtr->nextPtr;
ckfree(errorPtr);
}
}
TkGCCleanup(dispPtr);
TkpCloseDisplay(dispPtr);
/*
* Delete winTable after TkpCloseDisplay since special windows may need
* call Tk_DestroyWindow and it checks the winTable.
*/
Tcl_DeleteHashTable(&dispPtr->winTable);
ckfree(dispPtr);
/*
* There is more to clean up, we leave it at this for the time being.
*/
}
/*
*----------------------------------------------------------------------
*
* 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 the interp's 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(
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. */
const char *name, /* Name for new window; if parent is non-NULL,
* must be unique among parent's children. */
const 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. */
unsigned int flags) /* Additional flags to set on the window. */
{
register TkWindow *winPtr;
register TkDisplay *dispPtr;
int screenId;
ThreadSpecificData *tsdPtr =
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
if (!tsdPtr->initialized) {
tsdPtr->initialized = 1;
/*
* Create built-in image types.
*/
Tk_CreateImageType(&tkBitmapImageType);
Tk_CreateImageType(&tkPhotoImageType);
/*
* Create built-in photo image formats.
*/
Tk_CreatePhotoImageFormat(&tkImgFmtGIF);
Tk_CreatePhotoImageFormat(&tkImgFmtPNG);
Tk_CreatePhotoImageFormat(&tkImgFmtPPM);
}
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);
/*
* Set the flags specified in the call.
*/
winPtr->flags |= flags;
/*
* 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_HIERARCHY flag immediately here; otherwise
* Tk_DestroyWindow will core dump if it is called before the flag has
* been set.)
*/
winPtr->flags |=
TK_TOP_HIERARCHY|TK_TOP_LEVEL|TK_HAS_WRAPPER|TK_WIN_MANAGED;
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 the interp's 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(
Tcl_Interp *interp, /* Place to leave error message. */
const char *screenName, /* Name for screen. NULL or empty means use
* DISPLAY envariable. */
int *screenPtr) /* Where to store screen number. */
{
register TkDisplay *dispPtr;
const char *p;
int screenId;
size_t length;
ThreadSpecificData *tsdPtr =
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
/*
* 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) {
Tcl_SetResult(interp,
"no display name and no $DISPLAY environment variable",
TCL_STATIC);
return 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, NULL, 10);
}
/*
* See if we already have a connection to this display. If not, then open
* a new connection.
*/
for (dispPtr = tsdPtr->displayList; ; dispPtr = dispPtr->nextPtr) {
if (dispPtr == NULL) {
/*
* The private function zeros out dispPtr when it is created, so
* we only need to initialize the non-zero items.
*/
dispPtr = TkpOpenDisplay(screenName);
if (dispPtr == NULL) {
Tcl_ResetResult(interp);
Tcl_AppendResult(interp, "couldn't connect to display \"",
screenName, "\"", NULL);
return NULL;
}
dispPtr->nextPtr = tsdPtr->displayList; /* TkGetDisplayList(); */
tsdPtr->displayList = dispPtr;
dispPtr->lastEventTime = CurrentTime;
dispPtr->bindInfoStale = 1;
dispPtr->cursorFont = None;
dispPtr->warpWindow = NULL;
dispPtr->multipleAtom = None;
/*
* By default we do want to collapse motion events in
* Tk_QueueWindowEvent.
*/
dispPtr->flags |= TK_DISPLAY_COLLAPSE_MOTION_EVENTS;
Tcl_InitHashTable(&dispPtr->winTable, TCL_ONE_WORD_KEYS);
dispPtr->name = ckalloc(length + 1);
strncpy(dispPtr->name, screenName, length);
dispPtr->name[length] = '\0';
break;
}
if ((strncmp(dispPtr->name, screenName, length) == 0)
&& (dispPtr->name[length] == '\0')) {
break;
}
}
if (screenId >= ScreenCount(dispPtr->display)) {
char buf[32 + TCL_INTEGER_SPACE];
sprintf(buf, "bad screen number \"%d\"", screenId);
Tcl_SetResult(interp, buf, TCL_VOLATILE);
return 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) /* X's display pointer */
{
TkDisplay *dispPtr;
ThreadSpecificData *tsdPtr =
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
for (dispPtr = tsdPtr->displayList; dispPtr != NULL;
dispPtr = dispPtr->nextPtr) {
if (dispPtr->display == display) {
break;
}
}
return dispPtr;
}
/*
*--------------------------------------------------------------
*
* TkGetDisplayList --
*
* This function returns a pointer to the thread-local list of TkDisplays
* corresponding to the open displays.
*
* Results:
* The return value is a pointer to the first TkDisplay structure in
* thread-local-storage.
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
TkDisplay *
TkGetDisplayList(void)
{
ThreadSpecificData *tsdPtr =
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
return tsdPtr->displayList;
}
/*
*--------------------------------------------------------------
*
* TkGetMainInfoList --
*
* This function returns a pointer to the list of structures containing
* information about all main windows for the current thread.
*
* Results:
* The return value is a pointer to the first TkMainInfo structure in
* thread local storage.
*
* Side effects:
* None.
*
*--------------------------------------------------------------
*/
TkMainInfo *
TkGetMainInfoList(void)
{
ThreadSpecificData *tsdPtr =
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
return tsdPtr->mainWindowList;
}
/*
*--------------------------------------------------------------
*
* TkAllocWindow --
*
* This function 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(
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 = 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->internalBorderLeft = 0;
winPtr->wmInfoPtr = NULL;
winPtr->classProcsPtr = NULL;
winPtr->instanceData = NULL;
winPtr->privatePtr = NULL;
winPtr->internalBorderRight = 0;
winPtr->internalBorderTop = 0;
winPtr->internalBorderBottom = 0;
winPtr->minReqWidth = 0;
winPtr->minReqHeight = 0;
winPtr->geometryMaster = NULL;
return winPtr;
}
/*
*----------------------------------------------------------------------
*
* NameWindow --
*
* This function 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(
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.). */
const char *name) /* Name for winPtr; must be unique among
* parentPtr's children. */
{
#define FIXED_SIZE 200
char staticSpace[FIXED_SIZE];
char *pathName;
int isNew;
Tcl_HashEntry *hPtr;
size_t 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++;
/*
* If this is an anonymous window (ie, it has no name), just return OK
* now.
*/
if (winPtr->flags & TK_ANONYMOUS_WINDOW) {
return TCL_OK;
}
/*
* For non-anonymous windows, set up the window name.
*/
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, "\"", 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 = ckalloc(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,
&isNew);
if (pathName != staticSpace) {
ckfree(pathName);
}
if (!isNew) {
Tcl_AppendResult(interp, "window name \"", name,
"\" already exists in parent", 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 the interp's 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(
Tcl_Interp *interp, /* Interpreter to use for error reporting. */
const char *screenName, /* Name of screen on which to create window.
* Empty or NULL string means use DISPLAY
* environment variable. */
const char *baseName) /* Base name for application; usually of the
* form "prog instance". */
{
Tk_Window tkwin;
int dummy, isSafe;
Tcl_HashEntry *hPtr;
register TkMainInfo *mainPtr;
register TkWindow *winPtr;
register const TkCmd *cmdPtr;
ClientData clientData;
ThreadSpecificData *tsdPtr =
Tcl_GetThreadData(&dataKey, sizeof(ThreadSpecificData));
/*
* Panic if someone updated the TkWindow structure without also updating
* the Tk_FakeWin structure (or vice versa).
*/
if (sizeof(TkWindow) != sizeof(Tk_FakeWin)) {
Tcl_Panic("TkWindow and Tk_FakeWin are not the same size");
}
/*
* Create the basic TkWindow structure.
*/
tkwin = CreateTopLevelWindow(interp, (Tk_Window) NULL, baseName,
screenName, /* flags */ 0);
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 = ckalloc(sizeof(TkMainInfo));
mainPtr->winPtr = winPtr;
mainPtr->refCount = 1;
mainPtr->interp = interp;
Tcl_InitHashTable(&mainPtr->nameTable, TCL_STRING_KEYS);
mainPtr->deletionEpoch = 0l;
TkEventInit();
TkBindInit(mainPtr);
TkFontPkgInit(mainPtr);
TkStylePkgInit(mainPtr);
mainPtr->tlFocusPtr = NULL;
mainPtr->displayFocusPtr = NULL;
mainPtr->optionRootPtr = NULL;
Tcl_InitHashTable(&mainPtr->imageTable, TCL_STRING_KEYS);
mainPtr->strictMotif = 0;
mainPtr->alwaysShowSelection = 0;
if (Tcl_LinkVar(interp, "tk_strictMotif", (char *) &mainPtr->strictMotif,
TCL_LINK_BOOLEAN) != TCL_OK) {
Tcl_ResetResult(interp);
}
if (Tcl_CreateNamespace(interp, "::tk", NULL, NULL) == NULL) {
Tcl_ResetResult(interp);
}
if (Tcl_LinkVar(interp, "::tk::AlwaysShowSelection",
(char *) &mainPtr->alwaysShowSelection,
TCL_LINK_BOOLEAN) != TCL_OK) {
Tcl_ResetResult(interp);
}
mainPtr->nextPtr = tsdPtr->mainWindowList;
tsdPtr->mainWindowList = mainPtr;
winPtr->mainPtr = mainPtr;
hPtr = Tcl_CreateHashEntry(&mainPtr->nameTable, ".", &dummy);
Tcl_SetHashValue(hPtr, winPtr);
winPtr->pathName = Tcl_GetHashKey(&mainPtr->nameTable, hPtr);
Tcl_InitHashTable(&mainPtr->busyTable, TCL_ONE_WORD_KEYS);
/*
* 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)
&& (cmdPtr->initProc == NULL)) {
Tcl_Panic("TkCreateMainWindow: builtin command with NULL string and object procs");
}
if (cmdPtr->flags & PASSMAINWINDOW) {
clientData = tkwin;
} else {
clientData = NULL;
}
if (cmdPtr->initProc != NULL) {
cmdPtr->initProc(interp, clientData);
} else if (cmdPtr->cmdProc != NULL) {
Tcl_CreateCommand(interp, cmdPtr->name, cmdPtr->cmdProc,
clientData, NULL);
} else {
Tcl_CreateObjCommand(interp, cmdPtr->name, cmdPtr->objProc,
clientData, NULL);
}
if (isSafe) {
if (!(cmdPtr->flags & ISSAFE)) {
Tcl_HideCommand(interp, cmdPtr->name, cmdPtr->name);
}
}
}
TkCreateMenuCmd(interp);
/*
* 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);
tsdPtr->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 the interp's result and NULL is returned.
*