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ckWindow.c
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/*
* ckWindow.c --
*
* This file provides basic window-manipulation procedures.
*
* Copyright (c) 1995-2002 Christian Werner.
*
* See the file "license.terms" for information on usage and redistribution
* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
*/
#include "ckPort.h"
#include "ck.h"
#ifdef HAVE_GPM
#include "gpm.h"
#endif
/*
* Main information.
*/
CkMainInfo *ckMainInfo = NULL;
#ifdef __WIN32__
/*
* Curses input event handling information.
*/
typedef struct {
HANDLE stdinHandle;
HWND hwnd;
HANDLE thread;
CkMainInfo *mainPtr;
} InputInfo;
static InputInfo inputInfo = {
INVALID_HANDLE_VALUE,
NULL,
INVALID_HANDLE_VALUE,
NULL
};
static void InputSetup _ANSI_ARGS_((InputInfo *inputInfo));
static void InputExit _ANSI_ARGS_((ClientData clientData));
static void InputThread _ANSI_ARGS_((void *arg));
static LRESULT CALLBACK InputHandler _ANSI_ARGS_((HWND hwnd, UINT message,
WPARAM wParam,
LPARAM lParam));
static void InputHandler2 _ANSI_ARGS_((ClientData clientData));
#endif
#if (TCL_MAJOR_VERSION >= 8)
static void CkEvtExit _ANSI_ARGS_((ClientData clientData));
static void CkEvtSetup _ANSI_ARGS_((ClientData clientData,
int flags));
static void CkEvtCheck _ANSI_ARGS_((ClientData clientData,
int flags));
#endif
/*
* The variables below hold several uid's that are used in many places
* in the toolkit.
*/
Ck_Uid ckDisabledUid = NULL;
Ck_Uid ckActiveUid = NULL;
Ck_Uid ckNormalUid = NULL;
/*
* The following structure defines all of the commands supported by
* the toolkit, and the C procedures that execute them.
*/
typedef int (CkCmdProc) _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp,
int argc, char **argv));
typedef struct {
char *name; /* Name of command. */
CkCmdProc *cmdProc; /* Command procedure. */
} CkCmd;
CkCmd commands[] = {
/*
* Commands that are part of the intrinsics:
*/
#if (TCL_MAJOR_VERSION == 7) && (TCL_MINOR_VERSION <= 4)
{"after", Tk_AfterCmd},
#endif
{"bell", Ck_BellCmd},
{"bind", Ck_BindCmd},
{"bindtags", Ck_BindtagsCmd},
{"curses", Ck_CursesCmd},
{"destroy", Ck_DestroyCmd},
{"exit", Ck_ExitCmd},
#if (TCL_MAJOR_VERSION == 7) && (TCL_MINOR_VERSION <= 4)
{"fileevent", Tk_FileeventCmd},
#endif
{"focus", Ck_FocusCmd},
{"grid", Ck_GridCmd},
{"lower", Ck_LowerCmd},
{"option", Ck_OptionCmd},
{"pack", Ck_PackCmd},
{"place", Ck_PlaceCmd},
{"raise", Ck_RaiseCmd},
{"recorder", Ck_RecorderCmd},
{"tkwait", Ck_TkwaitCmd},
{"update", Ck_UpdateCmd},
{"winfo", Ck_WinfoCmd},
/*
* Widget-creation commands.
*/
{"button", Ck_ButtonCmd},
{"checkbutton", Ck_ButtonCmd},
{"entry", Ck_EntryCmd},
{"frame", Ck_FrameCmd},
{"label", Ck_ButtonCmd},
{"listbox", Ck_ListboxCmd},
{"menu", Ck_MenuCmd},
{"menubutton", Ck_MenubuttonCmd},
{"message", Ck_MessageCmd},
{"radiobutton", Ck_ButtonCmd},
{"scrollbar", Ck_ScrollbarCmd},
{"text", Ck_TextCmd},
{"toplevel", Ck_FrameCmd},
{"tree", Ck_TreeCmd},
{(char *) NULL, (CkCmdProc *) NULL}
};
/*
* Static procedures of this module.
*/
static void UnlinkWindow _ANSI_ARGS_((CkWindow *winPtr));
static void UnlinkToplevel _ANSI_ARGS_((CkWindow *winPtr));
static void ChangeToplevelFocus _ANSI_ARGS_((CkWindow *winPtr));
static void DoRefresh _ANSI_ARGS_((ClientData clientData));
static void RefreshToplevels _ANSI_ARGS_((CkWindow *winPtr));
static void RefreshThem _ANSI_ARGS_((CkWindow *winPtr));
static void UpdateHWCursor _ANSI_ARGS_((CkMainInfo *mainPtr));
static CkWindow *GetWindowXY _ANSI_ARGS_((CkWindow *winPtr, int *xPtr,
int *yPtr));
static int DeadAppCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int argc, char **argv));
static int ExecCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int argc, char **argv));
static int PutsCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int argc, char **argv));
static int CloseCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int argc, char **argv));
static int FlushCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int argc, char **argv));
static int ReadCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int argc, char **argv));
static int GetsCmd _ANSI_ARGS_((ClientData clientData,
Tcl_Interp *interp, int argc, char **argv));
/*
* Some plain Tcl commands are handled specially.
*/
CkCmd redirCommands[] = {
#ifndef __WIN32__
{"exec", ExecCmd},
#endif
{"puts", PutsCmd},
{"close", CloseCmd},
{"flush", FlushCmd},
{"read", ReadCmd},
{"gets", GetsCmd},
{(char *) NULL, (CkCmdProc *) NULL}
};
/*
* The following structure is used as ClientData for redirected
* plain Tcl commands.
*/
typedef struct {
CkMainInfo *mainPtr;
Tcl_CmdInfo cmdInfo;
} RedirInfo;
/*
*--------------------------------------------------------------
*
* NewWindow --
*
* This procedure creates and initializes a CkWindow 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.
*
*--------------------------------------------------------------
*/
static CkWindow *
NewWindow(parentPtr)
CkWindow *parentPtr;
{
CkWindow *winPtr;
winPtr = (CkWindow *) ckalloc(sizeof (CkWindow));
winPtr->window = NULL;
winPtr->childList = NULL;
winPtr->lastChildPtr = NULL;
winPtr->parentPtr = NULL;
winPtr->nextPtr = NULL;
winPtr->topLevPtr = NULL;
winPtr->mainPtr = NULL;
winPtr->pathName = NULL;
winPtr->nameUid = NULL;
winPtr->classUid = NULL;
winPtr->handlerList = NULL;
winPtr->tagPtr = NULL;
winPtr->numTags = 0;
winPtr->focusPtr = NULL;
winPtr->geomMgrPtr = NULL;
winPtr->geomData = NULL;
winPtr->optionLevel = -1;
winPtr->reqWidth = winPtr->reqHeight = 1;
winPtr->x = winPtr->y = 0;
winPtr->width = winPtr->height = 1;
winPtr->fg = COLOR_WHITE;
winPtr->bg = COLOR_BLACK;
winPtr->attr = A_NORMAL;
winPtr->flags = 0;
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. */
CkWindow *winPtr; /* Window that is to be named and inserted. */
CkWindow *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->lastChildPtr = winPtr;
parentPtr->childList = winPtr;
} else {
parentPtr->lastChildPtr->nextPtr = winPtr;
parentPtr->lastChildPtr = winPtr;
}
winPtr->mainPtr = parentPtr->mainPtr;
winPtr->nameUid = Ck_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((unsigned char) 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);
Tcl_CreateHashEntry(&parentPtr->mainPtr->winTable, (char *) winPtr, &new);
return TCL_OK;
}
/*
*----------------------------------------------------------------------
*
* Ck_MainWindow --
*
* Returns the main window for an application.
*
* Results:
* If interp is associated with the main window, the main
* window is returned. Otherwise NULL is returned and an
* error message is left in interp->result.
*
* Side effects:
* None.
*
*----------------------------------------------------------------------
*/
CkWindow *
Ck_MainWindow(interp)
Tcl_Interp *interp; /* Interpreter that embodies application,
* also used for error reporting. */
{
if (ckMainInfo == NULL || ckMainInfo->interp != interp) {
if (interp != NULL) {
Tcl_SetResult(interp, "no main window for application.", TCL_STATIC);
}
return NULL;
}
return ckMainInfo->winPtr;
}
/*
*----------------------------------------------------------------------
*
* Ck_CreateMainWindow --
*
* Make the main window.
*
* 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.
*
*----------------------------------------------------------------------
*/
CkWindow *
Ck_CreateMainWindow(interp, className)
Tcl_Interp *interp; /* Interpreter to use for error reporting. */
char *className; /* Class name of the new main window. */
{
int dummy;
Tcl_HashEntry *hPtr;
CkMainInfo *mainPtr;
CkWindow *winPtr;
CkCmd *cmdPtr;
#ifdef SIGTSTP
#ifdef HAVE_SIGACTION
struct sigaction oldsig, newsig;
#else
Ck_SignalProc sigproc;
#endif
#endif
#ifdef NCURSES_MOUSE_VERSION
MEVENT mEvent;
#endif
char *term;
int isxterm = 0;
/*
* For now, only one main window may exists for the application.
*/
if (ckMainInfo != NULL)
return NULL;
/*
* Create the basic CkWindow structure.
*/
winPtr = NewWindow(NULL);
/*
* Create the CkMainInfo structure for this application, and set
* up name-related information for the new window.
*/
mainPtr = (CkMainInfo *) ckalloc(sizeof(CkMainInfo));
mainPtr->winPtr = winPtr;
mainPtr->interp = interp;
Tcl_InitHashTable(&mainPtr->nameTable, TCL_STRING_KEYS);
Tcl_InitHashTable(&mainPtr->winTable, TCL_ONE_WORD_KEYS);
mainPtr->topLevPtr = NULL;
mainPtr->focusPtr = winPtr;
mainPtr->bindingTable = Ck_CreateBindingTable(interp);
mainPtr->optionRootPtr = NULL;
mainPtr->refreshCount = 0;
mainPtr->refreshDelay = 0;
mainPtr->lastRefresh = 0;
mainPtr->refreshTimer = NULL;
mainPtr->flags = 0;
ckMainInfo = mainPtr;
winPtr->mainPtr = mainPtr;
winPtr->nameUid = Ck_GetUid(".");
winPtr->classUid = Ck_GetUid("Main"); /* ??? */
winPtr->flags |= CK_TOPLEVEL;
hPtr = Tcl_CreateHashEntry(&mainPtr->nameTable, (char *) winPtr->nameUid,
&dummy);
Tcl_SetHashValue(hPtr, winPtr);
winPtr->pathName = Tcl_GetHashKey(&mainPtr->nameTable, hPtr);
Tcl_CreateHashEntry(&mainPtr->winTable, (char *) winPtr, &dummy);
ckNormalUid = Ck_GetUid("normal");
ckDisabledUid = Ck_GetUid("disabled");
ckActiveUid = Ck_GetUid("active");
#if CK_USE_UTF
#ifdef __WIN32__
{
char enc[32], *envcp = getenv("CK_USE_ENCODING");
unsigned int cp = GetConsoleCP();
if (envcp && strncmp(envcp, "cp", 2) == 0) {
cp = atoi(envcp + 2);
SetConsoleCP(cp);
cp = GetConsoleCP();
}
if (GetConsoleOutputCP() != cp) {
SetConsoleOutputCP(cp);
}
sprintf(enc, "cp%d", cp);
mainPtr->isoEncoding = Tcl_GetEncoding(NULL, enc);
}
#else
/*
* Use default system encoding as suggested by
* Anton Kovalenko <[email protected]>.
* May be overriden by environment variable.
*/
mainPtr->isoEncoding = Tcl_GetEncoding(NULL, getenv("CK_USE_ENCODING"));
if (mainPtr->isoEncoding == NULL) {
mainPtr->isoEncoding = Tcl_GetEncoding(NULL, NULL);
}
#endif
if (mainPtr->isoEncoding == NULL) {
panic("standard encoding not found");
}
if (strcmp(Tcl_GetEncodingName(mainPtr->isoEncoding), "utf-8") == 0) {
Tcl_FreeEncoding(mainPtr->isoEncoding);
mainPtr->isoEncoding = NULL;
}
#endif
/* Curses related initialization */
#ifdef SIGTSTP
/* This is essential for ncurses-1.9.4 */
#ifdef HAVE_SIGACTION
newsig.sa_handler = SIG_IGN;
sigfillset(&newsig.sa_mask);
newsig.sa_flags = 0;
sigaction(SIGTSTP, &newsig, &oldsig);
#else
sigproc = (Ck_SignalProc) signal(SIGTSTP, SIG_IGN);
#endif
#endif
#ifndef __WIN32__
/*
* Fix for problem when X server left linux console
* in non-blocking mode
*/
fcntl(0, F_SETFL, fcntl(0, F_GETFL) & (~O_NDELAY));
#endif
if (initscr() == (WINDOW *) ERR) {
ckfree((char *) winPtr);
return NULL;
}
#ifdef SIGTSTP
/* This is essential for ncurses-1.9.4 */
#ifdef HAVE_SIGACTION
sigaction(SIGTSTP, &oldsig, NULL);
#else
signal(SIGTSTP, sigproc);
#endif
#endif
raw();
noecho();
idlok(stdscr, TRUE);
scrollok(stdscr, FALSE);
keypad(stdscr, TRUE);
nodelay(stdscr, TRUE);
meta(stdscr, TRUE);
nonl();
mainPtr->maxWidth = COLS;
mainPtr->maxHeight = LINES;
winPtr->width = mainPtr->maxWidth;
winPtr->height = mainPtr->maxHeight;
winPtr->window = newwin(winPtr->height, winPtr->width, 0, 0);
if (has_colors()) {
start_color();
mainPtr->flags |= CK_HAS_COLOR;
}
#ifdef NCURSES_MOUSE_VERSION
mouseinterval(1);
mousemask(BUTTON1_PRESSED | BUTTON1_RELEASED |
BUTTON2_PRESSED | BUTTON2_RELEASED |
BUTTON3_PRESSED | BUTTON3_RELEASED, NULL);
mainPtr->flags |= (getmouse(&mEvent) != ERR) ? CK_HAS_MOUSE : 0;
#endif /* NCURSES_MOUSE_VERSION */
#ifdef __WIN32__
mouse_set(BUTTON1_PRESSED | BUTTON1_RELEASED |
BUTTON2_PRESSED | BUTTON2_RELEASED |
BUTTON3_PRESSED | BUTTON3_RELEASED);
mainPtr->flags |= CK_HAS_MOUSE;
term = "win32";
#else
term = getenv("TERM");
isxterm = strncmp(term, "xterm", 5) == 0 ||
strncmp(term, "rxvt", 4) == 0 ||
strncmp(term, "kterm", 5) == 0 ||
strncmp(term, "color_xterm", 11) == 0 ||
(term[0] != '\0' && strncmp(term + 1, "xterm", 5) == 0);
if (!(mainPtr->flags & CK_HAS_MOUSE) && isxterm) {
mainPtr->flags |= CK_HAS_MOUSE | CK_MOUSE_XTERM;
fflush(stdout);
fputs("\033[?1000h", stdout);
fflush(stdout);
}
#endif /* __WIN32__ */
#ifdef HAVE_GPM
/*
* Some ncurses aren't compiled with GPM support built in,
* therefore by setting the following environment variable
* usage of GPM can be turned on.
*/
if (!isxterm && (mainPtr->flags & CK_HAS_MOUSE)) {
char *forcegpm = getenv("CK_USE_GPM");
if (forcegpm && strchr("YyTt123456789", forcegpm[0])) {
mainPtr->flags &= ~CK_HAS_MOUSE;
}
}
if (!isxterm && !(mainPtr->flags & CK_HAS_MOUSE)) {
int fd;
Gpm_Connect conn;
#if (TCL_MAJOR_VERSION == 7) && (TCL_MINOR_VERSION <= 4)
EXTERN int CkHandleGPMInput _ANSI_ARGS_((ClientData clientData,
int mask, int flags));
#else
EXTERN void CkHandleGPMInput _ANSI_ARGS_((ClientData clientData,
int mask));
#endif
conn.eventMask = GPM_DOWN | GPM_UP | GPM_MOVE;
conn.defaultMask = 0;
conn.minMod = 0;
conn.maxMod = 0;
fd = Gpm_Open(&conn, 0);
if (fd >= 0) {
mainPtr->flags |= CK_HAS_MOUSE;
#if (TCL_MAJOR_VERSION >= 8)
mainPtr->mouseData = (ClientData) fd;
Tcl_CreateFileHandler(fd, TCL_READABLE,
CkHandleGPMInput, (ClientData) mainPtr);
#else
#if (TCL_MAJOR_VERSION == 7) && (TCL_MINOR_VERSION <= 4)
mainPtr->mouseData = (ClientData) fd;
Tk_CreateFileHandler2(fd, CkHandleGPMInput, (ClientData) mainPtr);
#else
mainPtr->mouseData = (ClientData)
Tcl_GetFile((ClientData) fd, TCL_UNIX_FD);
Tcl_CreateFileHandler((Tcl_File) mainPtr->mouseData, TCL_READABLE,
CkHandleGPMInput, (ClientData) mainPtr);
#endif
#endif
}
}
#endif /* HAVE_GPM */
#ifdef __WIN32__
/* PDCurses specific !!! */
inputInfo.mainPtr = mainPtr;
inputInfo.stdinHandle = GetStdHandle(STD_INPUT_HANDLE);
typeahead(-1);
SetConsoleMode(inputInfo.stdinHandle,
ENABLE_MOUSE_INPUT | ENABLE_WINDOW_INPUT);
InputSetup(&inputInfo);
#else
#if (TCL_MAJOR_VERSION >= 8)
Tcl_CreateFileHandler(0,
TCL_READABLE, CkHandleInput, (ClientData) mainPtr);
#else
#if (TCL_MAJOR_VERSION == 7) && (TCL_MINOR_VERSION <= 4)
Tk_CreateFileHandler2(0, CkHandleInput, (ClientData) mainPtr);
#else
Tcl_CreateFileHandler(Tcl_GetFile((ClientData) 0, TCL_UNIX_FD),
TCL_READABLE, CkHandleInput, (ClientData) mainPtr);
#endif
#endif
#endif
#if (TCL_MAJOR_VERSION >= 8)
Tcl_CreateEventSource(CkEvtSetup, CkEvtCheck, (ClientData) mainPtr);
Tcl_CreateExitHandler(CkEvtExit, (ClientData) mainPtr);
#endif
idlok(winPtr->window, TRUE);
scrollok(winPtr->window, FALSE);
keypad(winPtr->window, TRUE);
nodelay(winPtr->window, TRUE);
meta(winPtr->window, TRUE);
curs_set(0);
while (getch() != ERR) {
/* empty loop body. */
}
winPtr->flags |= CK_MAPPED;
Ck_SetWindowAttr(winPtr, winPtr->fg, winPtr->bg, winPtr->attr);
Ck_ClearToBot(winPtr, 0, 0);
Ck_EventuallyRefresh(winPtr);
/*
* Bind in Ck's commands.
*/
for (cmdPtr = commands; cmdPtr->name != NULL; cmdPtr++) {
Tcl_CreateCommand(interp, cmdPtr->name, cmdPtr->cmdProc,
(ClientData) winPtr, (Tcl_CmdDeleteProc *) NULL);
}
/*
* Redirect some critical Tcl commands to our own procedures
*/
for (cmdPtr = redirCommands; cmdPtr->name != NULL; cmdPtr++) {
RedirInfo *redirInfo;
#if (TCL_MAJOR_VERSION >= 8)
Tcl_DString cmdName;
extern int TclRenameCommand _ANSI_ARGS_((Tcl_Interp *interp,
char *oldName, char *newName));
#endif
redirInfo = (RedirInfo *) ckalloc(sizeof (RedirInfo));
redirInfo->mainPtr = mainPtr;
Tcl_GetCommandInfo(interp, cmdPtr->name, &redirInfo->cmdInfo);
#if (TCL_MAJOR_VERSION >= 8)
Tcl_DStringInit(&cmdName);
Tcl_DStringAppend(&cmdName, "____", -1);
Tcl_DStringAppend(&cmdName, cmdPtr->name, -1);
TclRenameCommand(interp, cmdPtr->name, Tcl_DStringValue(&cmdName));
Tcl_DStringFree(&cmdName);
#endif
Tcl_CreateCommand(interp, cmdPtr->name, cmdPtr->cmdProc,
(ClientData) redirInfo, (Tcl_CmdDeleteProc *) free);
}
/*
* Set variables for the intepreter.
*/
#if (TCL_MAJOR_VERSION < 8)
if (Tcl_GetVar(interp, "ck_library", TCL_GLOBAL_ONLY) == NULL) {
/*
* A library directory hasn't already been set, so figure out
* which one to use.
*/
char *libDir = getenv("CK_LIBRARY");
if (libDir == NULL) {
libDir = CK_LIBRARY;
}
Tcl_SetVar(interp, "ck_library", libDir, TCL_GLOBAL_ONLY);
}
#endif
Tcl_SetVar(interp, "ck_version", CK_VERSION, TCL_GLOBAL_ONLY);
/*
* Make main window into a frame widget.
*/
Ck_SetClass(winPtr, className);
CkInitFrame(interp, winPtr, 0, NULL);
mainPtr->topLevPtr = winPtr;
winPtr->focusPtr = winPtr;
return winPtr;
}
/*
*----------------------------------------------------------------------
*
* Ck_Init --
*
* This procedure is invoked to add Ck to an interpreter. It
* incorporates all of Ck's commands into the interpreter and
* creates the main window for a new Ck application.
*
* Results:
* Returns a standard Tcl completion code and sets interp->result
* if there is an error.
*
* Side effects:
* Depends on what's in the ck.tcl script.
*
*----------------------------------------------------------------------
*/
int
Ck_Init(interp)
Tcl_Interp *interp; /* Interpreter to initialize. */
{
CkWindow *mainWindow;
char *p, *name, *class;
int code;
static char initCmd[] =
#if (TCL_MAJOR_VERSION >= 8)
"proc init {} {\n\
global ck_library ck_version\n\
rename init {}\n\
tcl_findLibrary ck $ck_version 0 ck.tcl CK_LIBRARY ck_library\n\
}\n\
init";
#else
"proc init {} {\n\
global ck_library ck_version env\n\
rename init {}\n\
set dirs {}\n\
if [info exists env(CK_LIBRARY)] {\n\
lappend dirs $env(CK_LIBRARY)\n\
}\n\
lappend dirs $ck_library\n\
lappend dirs [file dirname [info library]]/lib/ck$ck_version\n\
catch {lappend dirs [file dirname [file dirname \\\n\
[info nameofexecutable]]]/lib/ck$ck_version}\n\
set lib ck$ck_version\n\
lappend dirs [file dirname [file dirname [pwd]]]/$lib/library\n\
lappend dirs [file dirname [file dirname [info library]]]/$lib/library\n\
lappend dirs [file dirname [pwd]]/library\n\
foreach i $dirs {\n\
set ck_library $i\n\
if ![catch {uplevel #0 source $i/ck.tcl}] {\n\
return\n\
}\n\
}\n\
set msg \"Can't find a usable ck.tcl in the following directories: \n\"\n\
append msg \" $dirs\n\"\n\
append msg \"This probably means that Ck wasn't installed properly.\n\"\n\
error $msg\n\
}\n\
init";
#endif
p = Tcl_GetVar(interp, "argv0", TCL_GLOBAL_ONLY);
if (p == NULL || *p == '\0')
p = "Ck";
name = strrchr(p, '/');
if (name != NULL)
name++;
else
name = p;
class = (char *) ckalloc((unsigned) (strlen(name) + 1));
strcpy(class, name);
class[0] = toupper((unsigned char) class[0]);
mainWindow = Ck_CreateMainWindow(interp, class);
ckfree(class);
#if !((TCL_MAJOR_VERSION == 7) && (TCL_MINOR_VERSION <= 4))
if (Tcl_PkgRequire(interp, "Tcl", TCL_VERSION, 0) == NULL)
return TCL_ERROR;
code = Tcl_PkgProvide(interp, "Ck", CK_VERSION);
if (code != TCL_OK)
return TCL_ERROR;
#endif
return Tcl_Eval(interp, initCmd);
}
/*
*--------------------------------------------------------------
*
* Ck_CreateWindow --
*
* Create a new window as a child of an existing window.
*
* Results:
* The return value is the pointer to the new window.
* If an error occurred in creating the window, then an
* error message is left in interp->result and NULL is
* returned.
*
* Side effects:
* A new window structure is allocated locally. A curses
* window is not initially created, but will be created
* the first time the window is mapped.
*
*--------------------------------------------------------------
*/
CkWindow *
Ck_CreateWindow(interp, parentPtr, name, toplevel)
Tcl_Interp *interp; /* Interpreter to use for error reporting.
* Interp->result is assumed to be
* initialized by the caller. */
CkWindow *parentPtr; /* Parent of new window. */
char *name; /* Name for new window. Must be unique
* among parent's children. */
int toplevel; /* If true, create toplevel window. */
{
CkWindow *winPtr;
winPtr = NewWindow(parentPtr);
if (NameWindow(interp, winPtr, parentPtr, name) != TCL_OK) {
Ck_DestroyWindow(winPtr);
return NULL;
}
if (toplevel) {
CkWindow *wPtr;
winPtr->flags |= CK_TOPLEVEL;
winPtr->focusPtr = winPtr;
if (winPtr->mainPtr->topLevPtr == NULL) {
winPtr->topLevPtr = winPtr->mainPtr->topLevPtr;
winPtr->mainPtr->topLevPtr = winPtr;
} else {
for (wPtr = winPtr->mainPtr->topLevPtr; wPtr->topLevPtr != NULL;
wPtr = wPtr->topLevPtr) {
/* Empty loop body. */
}
winPtr->topLevPtr = wPtr->topLevPtr;
wPtr->topLevPtr = winPtr;
}
}
return winPtr;
}
/*
*----------------------------------------------------------------------
*
* Ck_CreateWindowFromPath --
*
* This procedure is similar to Ck_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 the pointer to the new window.
* If an error occurred in creating the window, then an
* error message is left in interp->result and NULL is
* returned.
*
* Side effects:
* A new window structure is allocated locally. A curses
* window is not initially created, but will be created
* the first time the window is mapped.
*
*----------------------------------------------------------------------
*/
CkWindow *
Ck_CreateWindowFromPath(interp, anywin, pathName, toplevel)
Tcl_Interp *interp; /* Interpreter to use for error reporting.
* Interp->result is assumed to be
* initialized by the caller. */
CkWindow *anywin; /* Pointer to any window in application
* that is to contain new window. */
char *pathName; /* Path name for new window within the
* application of anywin. The parent of
* this window must already exist, but
* the window itself must not exist. */
int toplevel; /* If true, create toplevel window. */
{
#define FIXED_SPACE 5
char fixedSpace[FIXED_SPACE+1];
char *p;
CkWindow *parentPtr, *winPtr;
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, numChars);
p[numChars] = '\0';
}
/*
* Find the parent window.
*/
parentPtr = Ck_NameToWindow(interp, p, anywin);
if (p != fixedSpace) {
ckfree(p);
}
if (parentPtr == NULL)
return NULL;
/*
* Create the window.
*/
winPtr = NewWindow(parentPtr);
if (NameWindow(interp, winPtr, parentPtr, pathName + numChars + 1)
!= TCL_OK) {
Ck_DestroyWindow(winPtr);
return NULL;
}
if (toplevel) {
CkWindow *wPtr;
winPtr->flags |= CK_TOPLEVEL;
winPtr->focusPtr = winPtr;
if (winPtr->mainPtr->topLevPtr == NULL) {
winPtr->topLevPtr = winPtr->mainPtr->topLevPtr;
winPtr->mainPtr->topLevPtr = winPtr;
} else {
for (wPtr = winPtr->mainPtr->topLevPtr; wPtr->topLevPtr != NULL;
wPtr = wPtr->topLevPtr) {
/* Empty loop body. */
}
winPtr->topLevPtr = wPtr->topLevPtr;
wPtr->topLevPtr = winPtr;
}
}
return winPtr;
}
/*
*--------------------------------------------------------------
*
* Ck_DestroyWindow --
*
* Destroy an existing window. After this call, the caller
* should never again use the pointer.