/*** $Id: init-lite.c,v 1.33 2003/09/26 08:05:09 snig Exp $**** init.c: The Initialization/Termination routines**** Copyright (C) 1999, 2000, Wei Yongming.**** Current maintainer: Wei Yongming.**** Create date: 2000/11/05*//*** This program is free software; you can redistribute it and/or modify** it under the terms of the GNU General Public License as published by** the Free Software Foundation; either version 2 of the License, or** (at your option) any later version.**** This program is distributed in the hope that it will be useful,** but WITHOUT ANY WARRANTY; without even the implied warranty of** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the** GNU General Public License for more details.**** You should have received a copy of the GNU General Public License** along with this program; if not, write to the Free Software** Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA*//*** TODO:*/#include <stdio.h>#include <stdlib.h>#include <string.h>#include <unistd.h>#include <signal.h>#include <sys/termios.h>#include "common.h"#include "minigui.h"#include "gdi.h"#include "window.h"#include "cliprect.h"#include "gal.h"#include "internals.h"#include "ctrlclass.h"#include "cursor.h"#include "event.h"#include "misc.h"#include "menu.h"#include "timer.h"#include "accelkey.h"#ifndef _STAND_ALONE  #include "sharedres.h"  #include "client.h"  #include "server.h"  void* mgSharedRes;  size_t mgSizeRes;#endifBOOL GUIAPI ReinitDesktopEx (BOOL init_sys_text){    return SendMessage (HWND_DESKTOP, MSG_REINITSESSION, init_sys_text, 0) == 0;}static struct termios savedtermio;void* GUIAPI GetOriginalTermIO (void){#ifdef _STAND_ALONE    return &savedtermio;#else    return &SHAREDRES_TERMIOS;#endif}static BOOL InitResource (void){    if (!InitFixStr ()) {        fprintf (stderr, "MiniGUI: Can not initialize Fixed String heap failure!\n");        goto failure;    }#ifdef _CURSOR_SUPPORT    if (!InitCursor ()) {        fprintf (stderr, "MiniGUI: Count not initialize mouse cursor!\n");        goto failure;    }#endif    if (!InitMenu ()) {        fprintf (stderr, "MiniGUI: Init Menu module failure!\n");        goto failure;    }    if (!InitControlClass ()) {        fprintf(stderr, "MiniGUI: Init Control Class failure!\n");        goto failure;    }    if (!InitAccel ()) {        fprintf(stderr, "MiniGUI: Init Accelerator failure!\n");        goto failure;    }    if (!InitDesktop ()) {        fprintf (stderr, "MiniGUI: Init Desktop error!\n");        goto failure;    }    if (!InitFreeQMSGList ()) {        fprintf (stderr, "MiniGUI: Init free QMSG list error!\n");        goto failure;    }    if (!InitDskMsgQueue ()) {        fprintf (stderr, "MiniGUI: Init MSG queue error!\n");        goto failure;    }    return TRUE;failure:    return FALSE;}#define err_message(step, message) fprintf (stderr, "Error in step %d: %s\n", step, message)#ifdef _STAND_ALONEstatic void segvsig_handler (int v){    TerminateLWEvent ();    TerminateGAL ();    if (v == SIGSEGV)        kill (getpid(), SIGABRT); // cause core dump    else        _exit (v);}#else// defined in kernel/sharedres.c.void delete_sem (void);static void segvsig_handler (int v){    TerminateLWEvent ();    TerminateGAL ();    delete_sem ();    unlink (LOCKFILE);    unlink (CS_PATH);    if (v == SIGSEGV)        kill (getpid(), SIGABRT); // cause core dump    else        _exit (v);}#endifstatic BOOL InstallSEGVHandler (void){    struct sigaction siga;        siga.sa_handler = segvsig_handler;    siga.sa_flags = 0;        memset (&siga.sa_mask, 0, sizeof (sigset_t));    sigaction (SIGSEGV, &siga, NULL);    sigaction (SIGTERM, &siga, NULL);    sigaction (SIGINT, &siga, NULL);    /* ignore the SIGPIPE signal */    siga.sa_handler = SIG_IGN;    sigaction (SIGPIPE, &siga, NULL);    return TRUE;}int InitGUI (void){    int step = 1;    // Save original termio#ifndef _STAND_ALONE    if (mgIsServer)#endif        tcgetattr (0, &savedtermio);    if (!InitMisc ()) {        err_message (step, "Can not initialize miscellous things!");        return step;    }    step++;#ifndef _STAND_ALONE    if (mgIsServer && !IsOnlyMe ()) {        err_message (step, "There is already an instance of 'mginit'!");        return step;    }    step++;#endif    // Init GAL engine.    switch (InitGAL ()) {    case ERR_CONFIG_FILE:        err_message (step, "Reading configuration failure!");        return step;    case ERR_NO_ENGINE:        err_message (step, "No graphics engine defined!");        return step;    case ERR_NO_MATCH:        err_message (step, "Can not get graphics engine information!");        return step;    case ERR_GFX_ENGINE:        err_message (step, "Can not initialize graphics engine!");        return step;    }    step++;    atexit (TerminateGAL);    /* install signal handlers */#ifndef _STAND_ALONE    if (mgIsServer)#endif        InstallSEGVHandler ();    if (!InitGDI ()) {        err_message (step, "MiniGUI: Initialization of GDI resource failure!\n");        return step;    }    step++;    atexit (TerminateGDI);    /* Init Screen DC here */    if (!InitScreenDC ()) {        err_message (step, "Can not initialize screen DC!");        return step;    }    step++;    atexit (TerminateScreenDC);    g_rcScr.left = 0;    g_rcScr.top = 0;    g_rcScr.right = GetGDCapability (HDC_SCREEN, GDCAP_MAXX) + 1;    g_rcScr.bottom = GetGDCapability (HDC_SCREEN, GDCAP_MAXY) + 1;    if (!InitWindowElementColors ()) {        err_message (step, "Can not initialize colors of window element!");        return step;    }    step++;#ifndef _STAND_ALONE    if (mgIsServer) {        // Load shared resource and create shared memory.        if ((mgSharedRes = LoadSharedResource ()) == NULL) {            err_message (step, "Can not load shared resource!");            return step;        }        atexit (UnloadSharedResource);        SHAREDRES_TERMIOS = savedtermio;    }    else {        if ((mgSharedRes = AttachSharedResource ()) == NULL) {            err_message (step, "Can not attach shared resource!");            return step;        }        atexit (UnattachSharedResource);    }    step++;#endif    // Initialize resource    if (!InitResource ()) {        err_message (step, "Can not initialize resource!");        return step;    }    step++;#ifdef _STAND_ALONE    // Init IAL engine..    if (!InitLWEvent ()) {        err_message (step, "Can not initialize low level event!");        return step;    }    step++;    atexit (TerminateLWEvent);    __mg_dsk_msgs.OnIdle = IdleHandler4StandAlone;    if (!StandAloneStartup ()) {        fprintf (stderr, "Can not start MiniGUI-Lite StandAlone version.\n");        return step;    }#else    if (mgIsServer) {        // Init IAL engine..        if (!InitLWEvent ()) {            err_message (step, "Can not initialize low level event!");            return step;        }        step++;        atexit (TerminateLWEvent);        __mg_dsk_msgs.OnIdle = IdleHandler4Server;        if (!ServerStartup ()) {            fprintf (stderr, "Can not start the server of MiniGUI-Lite: mginit.\n");            return step;        }    }    else {        if (!ClientStartup ()) {            err_message (step, "Can not start client!");            return step;        }        step++;        __mg_dsk_msgs.OnIdle = IdleHandler4Client;    }#endif    SetKeyboardLayout ("default");    TerminateMgEtc ();    return 0;}void TerminateGUI (int rcByGUI){    DestroyDskMsgQueue ();    DestroyFreeQMSGList ();    TerminateDesktop ();    TerminateAccel ();    TerminateControlClass ();    TerminateMenu ();#ifdef _CURSOR_SUPPORT    TerminateCursor ();#endif    TerminateFixStr ();#ifdef _STAND_ALONE    SendMessage (HWND_DESKTOP, MSG_ENDSESSION, 0, 0);    StandAloneCleanup ();#else    if (mgIsServer) {        SendMessage (HWND_DESKTOP, MSG_ENDSESSION, 0, 0);        /* Cleanup UNIX domain socket and other IPC objects. */        ServerCleanup ();    }    else {        ClientCleanup ();    }#endif}