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/*

 * tkUnixSam42.c --

 *

 *      Initializes the Tk stand-alone module Tk version 4.2.

 *

 * Copyright (c) 1996, Expert Interface Technologies

 *

 * See the file "license.terms" for information on usage and redistribution

 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.

 *

 */

#include <tkPort.h>

#include <tkInt.h>

#if defined(__WIN32__) || defined(_WIN32)

#   define SAMTK_WINDOWS

#else

#   if defined(MAC_TCL)

#       define SAMTK_MAC

#   else

#       define SAMTK_UNIX

#       include <tkUnixInt.h>

#   endif

#endif

int                     SamTk_Init _ANSI_ARGS_((Tcl_Interp *interp));

#include "tkSamLib.c"

static int

SamTkPlatformInit(interp)

    Tcl_Interp * interp;

{

#ifdef SAMTK_UNIX

    TkCreateXEventSource();

#endif

    Tcl_Eval(interp, "set tk_library {}");

    return LoadScripts(interp);

}

/*

 * The variables and table below are used to parse arguments from

 * the "argv" variable in Tk_Init.

 */

static int synchronize;

static char *name;

static char *display;

static char *geometry;

static char *colormap;

static char *visual;

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"},

    {"--", 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}

};

int

Tksam_Init(interp)

    Tcl_Interp *interp;         /* Interpreter to initialize. */

{

    char *p;

    int argc, code;

    char **argv, *args[20];

    Tcl_DString class;

    char buffer[30];

    /*

     * 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.

     */

    synchronize = 0;

    name = display = geometry = colormap = visual = NULL;

    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.

     */

    if (name == NULL) {

        name = Tcl_GetVar(interp, "argv0", TCL_GLOBAL_ONLY);

        if ((name == NULL) || (*name == 0)) {

            name = "tk";

        } else {

            p = strrchr(name, '/');

            if (p != NULL) {

                name = p+1;

            }

        }

    }

    Tcl_DStringInit(&class);

    Tcl_DStringAppend(&class, name, -1);

    p = Tcl_DStringValue(&class);

    if (islower(*p)) {

        *p = toupper((unsigned char) *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 (Tk_GetNumMainWindows() == 0) {

            Tcl_SetVar2(interp, "env", "DISPLAY", display, TCL_GLOBAL_ONLY);

        }

    }

    if (colormap != NULL) {

        args[argc] = "-colormap";

        args[argc+1] = colormap;

        argc += 2;

    }

    if (visual != NULL) {

        args[argc] = "-visual";

        args[argc+1] = visual;

        argc += 2;

    }

    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;

        }

    }

    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 = SamTkPlatformInit(interp);

    done:

    if (argv != NULL) {

        ckfree((char *) argv);

    }

    return code;

}