File: imview.cxx

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/*
 * $Id: imview.cxx,v 4.30 2007/11/19 18:17:55 hut66au Exp $
 *
 * Imview, the portable image analysis application
 * http://www.cmis.csiro.au/Hugues.Talbot/imview
 * ----------------------------------------------------------
 *
 *  Imview is an attempt to provide an image display application
 *  suitable for professional image analysis. It was started in
 *  1997 and is mostly the result of the efforts of Hugues Talbot,
 *  Image Analysis Project, CSIRO Mathematical and Information
 *  Sciences, with help from others (see the CREDITS files for
 *  more information)
 *
 *  Imview is Copyrighted (C) 1997-2005 by the Australian Commonwealth
 *  Science and Industry Research Organisation (CSIRO). Please see the
 *  COPYRIGHT file for full details. Imview also includes the
 *  contributions of many others. Please see the CREDITS file for full
 *  details.
 *
 *  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, USA.
 * */

/*------------------------------------------------------------------------
 *
 *  The Main part of imView, an image viewer program for X11
 *  by Hugues Talbot	26 Oct 1997
 *
 * This program is available free of charge for anyone to use under no
 * guarantee of any kind, expressed or implied.
 *
 *-----------------------------------------------------------------------*/

#include <imcfg.h> // very important to have at the top there
#include "imnmspc.hxx"


#include <FL/Fl.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_Menu_Bar.H>
#include <FL/Fl_Box.H>
#include <FL/Fl_Image.H>
#include <FL/Fl_File_Chooser.H>
#include <FL/Fl_Help_Dialog.H>
#include <FL/Fl_File_Icon.H>
#ifdef HAVE_NATIVE_CHOOSER
#include <FL/Fl_Native_File_Chooser.H>
#endif
#include <FL/x.H>
#include "imunistd.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h> 
#include <time.h>
#include <assert.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <X11/xpm.h>

#ifdef WIN32_NOTCYGWIN
#   include <windows.h>
#   include <tchar.h>
#   include <io.h>
#else
#   include <dirent.h>  // should always be there because FLTK defines it.
#endif

#ifdef HAVE_PTHREADS
#include <pthread.h> // oh my God.
#endif

#include <map>    // C++ stl maps
#include <string> // the C++ ones

#include "imview.hxx"
#include "imviewWindow.hxx"
#include "io/imSystem.hxx"
#include "menubar.hxx"
#include "imageIO.hxx"
#include "pointfile.hxx"
#include "imageViewer.hxx"
#include "printPrefs.hxx"
#include "savePrefs.hxx"
#include "imageInfo.hxx"
#include "transferFunction.hxx"
#include "spectraBox.hxx"
#include "profileBox.hxx"
#include "saveSpect.hxx"
#include "printSpect.hxx"
#include "userPrefs.hxx"
#include "progressInfo.hxx"
#include "nocase.hxx"
#include "io/newprefio.hxx"
#include "tmpMsg.hxx"
#include "bivHist.hxx"
#include "machine.hxx"
#include "server/imserver.hxx"
#include "server/interpreter.hxx"
#include "rawImage.hxx"
#include "annotatePoints.hxx"
#include "toolbar.hxx"
#include "io/readMagick.hxx" // for the initImageMagick function
#include "transferRGBFunction.hxx"
#include "sliceSlider.hxx" // generic panel with linked slider/value
#include "view3d.hxx"  // 3D image viewer
#include "patchlevel.h"
#include "imview.xpm"

typedef map<string,image_psfile>::const_iterator cmi;  // const Map iterator

/*-- miscellaneous global variables  ---*/
char                  appName[DFLTSTRLEN];
char                **extpathlist = 0; // list of all the LUT paths

// components of the application
imviewWindow          *mainWindow = 0;
imageViewer           *mainViewer = 0;
imViewMenuBar         *mainMenuBar = 0;
imageIO               *IOBlackBox = 0;
Fl_Box                *titleBox = 0, *imageBox = 0;
Fl_Image              *titleImage = 0;
pointfile             *PtFileMngr = 0; // point file manager
Fl_File_Chooser       *ImviewFC = 0; // File chooser dialog
#ifdef HAVE_NATIVE_CHOOSER
Fl_Native_File_Chooser  *ImviewNFC = 0; // native file chooser
#endif

// objects created using fluid
printprefs            *printPrefsPanel = 0; // print preferences panel
saveprefs             *savePrefsPanel = 0;  // save preferences panel
imageinfo             *imageInfoPanel = 0;  // image information panel
transfer              *transferEditorPanel = 0; // transfer function editor panel
transferRGB           *transferRGBEditorPanel = 0; // same as above for RGB images
spectra               *spectraPanel = 0;    // spectrum display for hyperspectral images
spectra               *depthProfile = 0;    // profile down the depth axis for 3D image
profile               *profilePanel = 0;    // 1d profiles 
savespect             *saveSpectPanel = 0;  // saves a spectrum
printspect            *printSpectPanel = 0; // prints a spectrum
userprefs             *userprefsPanel = 0;  // deals with the user preferences
tmpmsg                *tmpmsgPanel = 0;     // for temporary messages
bivhist               *bivHistPanel = 0;    // bivariate histogram
progress              *progressPanel = 0;   // progress slider panel
rawimage              *rawImagePanel = 0;   // unrecognized format, manually entered parms
Fl_Help_Dialog        *help = 0;            // the Help dialog...
annotatept            *annotatePointPanel = 0; // point annotation
toolbar               *toolbarPanel = 0;    // as the name implies, a primitive toolbar
slideinput            *slice3D = 0, *sliceComponent = 0, *sliceSeries = 0;
view3D                *view3dPanel = 0;     // 3 views at once, very useful

// other objects
imprefs               *fileprefs = 0;
char                   currentprefspath[DFLTSTRLEN];
char                   installpath[DFLTSTRLEN];
char                   runningpath[DFLTSTRLEN];
interpreter           *imview_interpreter = 0; // used to access the server remotely 
linkmanager           *imview_linkmanager = 0; // essentially the client to other imview servers.

// threads & server
#ifdef HAVE_PTHREADS
pthread_t              serverthread;
bool                   serverIsRunning = false;
#endif // HAVE_PTHREADS

Semaphore              access_debug, access_error; // the output channels must be protected
bool                   server_terminate = false;
bool                   main_terminate = false;
imview_server         *is = 0;
double                 simple_progress = 0.0; 
volatile int           serverPortNumber = 0;
int                    portfileDescriptor = -1;
int                    pipepair[2];
char                   portfilename[DFLTSTRLEN];

// these depend on the size of the physical screen
int                    appMaxWidth, appMaxHeight;

// useful strings
string                 truestr          = "True";
string                 falsestr         = "False";
string                 BWstr            = "BW";
string                 GREYstr          = "Grey";
string                 COLOURstr        = "Colour";
string                 CONSTRAINEDstr   = "Constrained";
string                 UNCONSTRAINEDstr = "Unconstrained";

// splash screen image
const char splashImg[] = "imview_banner.jpg";

// mapping real PS file names to temporary files
map <string,image_psfile>   psfilemap;

// mapping pathnames to image header, useful for raw images
map <string, RAWFILE_HEADER> rawfilemap;

// various flag/preferences
int                    debugIsOn = 0;
int                    stopDebug = 0;
int                    serverDebug = 0; // explicitely to debug the server
bool                   lutWraparound = false; // LUT behaviour for regions > 255
volatile bool          syncDisplay = false;
volatile bool          hasSynced = false;
bool                   hideMainMenu = false; // hides but still enables the main menu
bool                   disableMainMenu = false; // disable but stil shows the main menu
bool                   disableIOKeys = false; // disables *some* keyboard shortcuts
bool                   disableQuit = false; // Imview just won't quit now...
int                    makeImageCharIfFits = 1; // if a non-CHAR image fits in a char image, should we call it a char image and save memory?
int                    RGBdisplaysRGB = 1; // should 3-spectra images and RGB images be displayed as RGB or multi-spectra images?
int                    fitCharOverAllSamples = 1; // Should a multi-sample non-char image be fitcharred over all samples or only the one displayed?
int                    fitCharOverAllSlices = 1; // Should we fit a 3D image over all slices?
bool                   performFork = false; // useful when called from system()
bool                   ntChild = false; // specific to windows.
bool                   darwinChild = false; // specific to Darwin/MacOS/Carbon
int                    zimageArgs = 0;
int                    appendPoints = 0;
int                    applyTransferToAll = 0;
int                    deleteAfter = 0; // should we delete the images after we close them?
int                    startServer = 0;
bool                   useOffscreenBuff = true;  // if true, use an off-screen buffer to draw image into at zoom = 1.0. 
bool                   useMagick = true; // if false, the use of the ImageMagick library is disallowed (ImageMagick crashes easily)
bool                   forceMagick = false; // if true, forces the use of ImageMagick to the exclusion of natively supported image format
bool                   forceRaw = false ; // if true, disable image format recognition and forces unknown/raw format
bool                   simplePointfile = false; // if true, export simpler versions of the pointfiles (no annotation, no colour support)
int                    menuheight = MENUHEIGHT;
displaymode            displaymodepref = IMV_DISPLAY_WINDOW_FIT_IMG;
bool                   fullScreen = false;

// a couple of temporary file name buffer

char                  *imTempFileName = 0;
//const char  *psonlyfile;

double                 persistentGamma = 1.0;

// the nasty signals longjump buffer
static im_jmp_buf      abortenv;

// an RGB description of the FL colours

// hand-coded Look-up table for the overlay plane.
unsigned char FL_COLOURS[MAX_FL_COLOURS][3] = {
{0,     0,    0},    // 0 black
{255,   0,    0},    // 1 Red
{0,   255,    0},    // 2 Green
{255, 255,    0},    // 3 Yellow
{0,     0,  255},    // 4 Blue
{255,   0,  255},    // 5 Magenta
{0,   255,  255},    // 6 cyan
{255, 255,  255},    // 7 white
// other colours
{      0,    127,    255}, {    127,    255,      0}, {    255,      0,    127}, {    148,    148,    148}, {      0,    255,    128},
{    128,      0,    255}, {    255,    128,      0}, {      1,      0,    159}, {      0,    159,      1}, {    159,      1,      0},
{     96,    254,    255}, {    255,     96,    254}, {    254,    255,     96}, {     21,    125,    126}, {    126,     21,    125},
{    125,    126,     21}, {    116,    116,    255}, {    116,    255,    116}, {    255,    116,    116}, {      0,    227,    228},
{    228,      0,    227}, {    227,    228,      0}, {     28,     27,    255}, {     27,    255,     28}, {    255,     28,     27},
{     59,     59,     59}, {    176,    195,    234}, {    255,    196,    175}, {     68,    194,    171}, {    171,     68,    194},
{    194,    171,     68}, {     71,    184,     72}, {     72,     71,    184}, {    184,     72,     71}, {    188,    255,    169},
{     63,    179,    252}, {    179,    252,     63}, {    252,     63,    179}, {      0,      9,     80}, {      9,     80,      0},
{     80,      0,      9}, {    250,    175,    255}, {    213,    134,    199}, {     95,    100,    115}, {      0,    163,    188},
{    163,    188,      0}, {    188,      0,    163}, {      0,     73,    203}, {     73,    203,      0}, {    203,      0,     73},

{      0,    189,     94}, {     94,      0,    189}, {    189,     94,      0}, {    119,    243,    187}, {     32,    125,     55},
{     55,     32,    125}, {    125,     55,     32}, {    185,    102,    255}, {    255,    185,    102}, {    168,    209,    120},
{    119,    166,    208}, {    192,     96,    135}, {     41,    255,    182}, {    130,    153,     83}, {     55,     88,    247},
{     55,    247,     89}, {    247,     55,     88}, {      0,     75,     87}, {     75,     87,      0}, {     87,      0,     75},
{     59,    135,    200}, {    127,    213,     51}, {    162,    255,    255}, {    182,     37,    255}, {    255,    182,     37},
{    117,     57,    228}, {    210,    163,    142}, {    228,    117,     57}, {    246,    255,    193}, {    123,    107,    188},
{    107,    194,    123}, {      5,     59,    145}, {     59,    145,      5}, {    145,      5,     59}, {    198,     39,    119},
{     23,    197,     40}, {     40,     23,    197}, {    197,     40,     23}, {    158,    199,    178}, {    121,    201,    255},
{    223,    223,    134}, {     84,    253,     39}, {     15,    203,    149}, {    149,     15,    203}, {    203,    149,     15},
{     90,    144,    152}, {    139,     75,    143}, {    132,     97,     71}, {    219,     65,    224}, {    224,    219,     65},

{     40,    255,    255}, {     69,    223,    218}, {      0,    241,     74}, {     74,      0,    241}, {    241,     74,      0},
{     51,    171,    122}, {    227,    211,    220}, {     87,    127,     61}, {    176,    124,     90}, {     13,     39,     36},
{    255,    142,    165}, {    255,     38,    255}, {    255,    255,     38}, {    107,     50,     83}, {    165,    142,    224},
{      9,    181,    255}, {    181,    255,      9}, {    255,      9,    181}, {     70,    238,    140}, {      5,     74,    255},
{    255,      5,     74}, {     51,     84,    138}, {    101,    172,     31}, {     17,    115,    177}, {      0,      0,    221},
{      0,    221,      0}, {    221,      0,      0}, {    200,    255,    220}, {     50,     41,      0}, {    205,    150,    255},
{    116,     45,    178}, {    189,    255,    113}, {     44,      0,     47}, {    171,    119,     40}, {    255,    107,    205},
{    172,    115,    177}, {    236,     73,    133}, {    168,      0,    109}, {    207,     46,    168}, {    203,    181,    188},
{     35,    188,    212}, {     52,     97,     90}, {    184,    209,     39}, {    152,    164,     41}, {     70,     46,    227},
{    227,     70,     46}, {    255,    156,    211}, {    222,    146,     98}, {     95,     56,    136}, {    152,     54,    102},

{      0,    142,     86}, {     86,      0,    142}, {    142,     86,      0}, {     96,    223,     86}, {     46,    135,    246},
{    120,    208,      4}, {    158,    233,    212}, {    214,     92,    177}, {     88,    147,    104}, {    147,    240,    149},
{    148,     93,    227}, {    133,    255,     72}, {    194,     27,    209}, {    255,    255,    147}, {      0,     93,     44},
{    158,     36,    160}, {      0,    233,    182}, {    217,     94,     96}, {     88,    103,    218}, {     38,    154,    163},
{    139,    114,    118}, {     43,      0,     94}, {    174,    164,    113}, {    114,    188,    168}, {    119,     23,      0},
{     93,     86,     42}, {    202,    226,    255}, {    155,    191,     80}, {    136,    158,    255}, {     62,    247,      0},
{     88,    146,    234}, {    229,    183,      0}, {     36,    212,    110}, {    161,    143,      0}, {    210,    191,    105},
{      0,    164,    133}, {     89,     30,     41}, {    132,      0,    164}, {     42,     89,     30}, {    217,    222,    178},
{     11,     22,    121}, {     22,    107,    221}, {    255,    151,     69}, {      3,    158,     45}, {     45,      3,    158},
{    158,     45,      3}, {     29,     42,     86}, {     22,    122,      9}, {    110,    209,    213}, {     57,    221,     53},

{     91,    101,    159}, {     45,    140,     93}, {     37,    213,    247}, {      0,     34,    185}, {     34,    185,      0},
{    185,      0,     34}, {    172,      0,    236}, {     78,    180,    210}, {    221,    107,    231}, {     43,     49,    162},
{     49,    162,     43}, {    162,     43,     49}, {    213,    248,     36}, {    214,      0,    114}, {    248,     36,    213},
{    243,     34,    149}, {    167,    158,    185}, {    224,    122,    144}, {    149,    245,     34}, {     98,     31,    255},
{    255,     98,     31}, {    193,    200,    152}, {     95,     80,    255}, {     63,    123,    128}, {     72,     62,    102},
{    148,     62,    255}, {    108,    226,    151}, {    255,     99,    159}, {    126,    255,    226}, {    136,    223,     98},
{    255,     95,     80}, {     15,    153,    225}, {    211,     41,     73}, {     41,     71,    212}, {    187,    217,     83},
{     79,    235,    180}, {    127,    166,      0}, {    243,    135,    251}, {      0,     41,    229}, {    229,      0,     41},
{    216,    255,     82}, {    249,    174,    141}, {    255,    215,    249}, {     79,     31,    167}, {    167,     79,     31},
{    185,    102,    213}, {     83,    215,    255}, {     40,      2,      4}, {    220,    171,    224}, {      4,      0,     41},

{     90,     50,      6}, {    113,     15,    221}, {    221,    113,     15}, {    115,      0,     33}
};

// page sizes in points
float page_formats[PAGESIZE_NB][2] = {
    {-1, -1},       /* automatic */
    {421.0, 595.0}, /* A5 */
    {501.0, 709.0}, /* B5 */
    {595.0, 842.0}, /* A4 */
    {612.0, 792.0}, /* Letter */
    {612.0, 1008.0}, /* Legal (not sure */
    {842.0, 1190.0} /* A3 */
};

/* thanks to Python */ 
/* imview... */
const char *silly_messages[] = {
    "is dead, Jim", 
    "has joined the Choir Invisible",
    "has run down the curtain",
    "has gone to meet its Developer (who says Hi)",
    "is pushing up the daisies",
    "has passed on",
    "is no more",
    "has ceased to be",
    "has expired",
    "is a stiff",
    "is bereft of artificial life",
    "may rest in peace",
    "'s computing processes are now history",
    "is off the twig",
    "has shuffled off this mortal coil",
    "is an ex-imview", 
    "has kicked the bucket",
    "a pass� l'arme � gauche",
    "n'est plus",
    "nous a quitt�",
    "has done itself in",
    NULL
};

// returns the Fl_Color closest to the RGB value given
Fl_Color fl_closest_colour(uchar r, uchar g, uchar b)
{
    return (fl_color_cube(r * (FL_NUM_RED - 1) / 255,
                          g * (FL_NUM_GREEN - 1) / 255,
                          b * (FL_NUM_BLUE - 1) / 255));
}

// returns the FLTK colour closest to the index in the FL_COLOUR array
Fl_Color fl_closest_index(int i)
{
    return (fl_closest_colour(FL_COLOURS[i][0],
                              FL_COLOURS[i][1],
                              FL_COLOURS[i][2]));
}

static void experimental_sync(void);

// VERY useful function.

// equivalent to the '<' operator.
// returns 0 if both strings are the same
// return 1 if a < b
// return -1 if a > b
int cmp_nocase(const string &a, const string &b)
{
    string::const_iterator p = a.begin();
    string::const_iterator q = b.begin();

    while (p != a.end() && q != b.end()) {
	if (toupper(*p) != toupper(*q))
	    return ((toupper(*p) < toupper(*q)) ? -1: 1);
	++p;
	++q;
    }
    return ((b.size() == a.size()) ? 0 : (a.size() < b.size()) ? -1:1); 
}

// case-insensitive compare strings 
// the nocase operator, equivalent to the '<' operator, but for
// case-independent comparisons.
bool Nocase::operator () (const string &x, const string &y) const
{
    string::const_iterator p = x.begin();
    string::const_iterator q = y.begin();

    while (p!=x.end() && q!=y.end() && toupper(*p) == toupper(*q)) {
	++p;
	++q;
    }
    if (p == x.end()) return q != y.end();
    return toupper(*p) < toupper(*q);
}

// the title banner

Fl_Box *bannerBox(int x, int y, int w, int h)
{
    static char message[200];

    
    sprintf(message,"Imview %s", patchlevel);
    dbgprintf("%s\n",message);
    Fl_Box *box = new Fl_Box(x,y,w,h,message);
    box->labelfont(FL_TIMES | FL_ITALIC | FL_BOLD);
    box->labelsize(24);
    box->labeltype(FL_SHADOW_LABEL);
    box->labelcolor(FL_WHITE);

    return box;
}



void showSimpleBanner(void)
{
    int tboxwidth, tboxheight, ret;
    static int splashwidth, splashheight, splashspp,i,j;
    static long splashbytes = 0;
    static unsigned char *splashScreen = 0;

    mainWindow->size_range(MINWIDTH,MINHEIGHT,SWIDTH,SHEIGHT-(MENUHEIGHT-menuheight));
    dbgprintf("Setting size limit in showSimpleBanner\n");
    mainWindow->size(SWIDTH,SHEIGHT-(MENUHEIGHT-menuheight));

    

    // show the splash screen if found
    // installpath is defined dynamically and splashImg is a constant char[] defined above.
    if (splashScreen == 0) {
	static char pathToSplash[DFLTSTRLEN];
        char tmppath[DFLTSTRLEN];
        
        for ( i = 0, j = 0; ; ) { // ever
            if ((installpath[i] != PATHSEP) && (installpath[i] != '\0')) {
                tmppath[j++] = installpath[i++];
            } else {
                tmppath[j] = '\0';
                dbgprintf("looking in %s\n", tmppath);
                snprintf(pathToSplash, DFLTSTRLEN, "%s%c%s", tmppath, SLASH, splashImg);

                // try to read it off a file
                if ((ret = IOBlackBox->read(pathToSplash, 0)) == 0) {
                    // fine, we could read the splash image
                    splashwidth = IOBlackBox->imageWidth();
                    splashheight = IOBlackBox->imageHeight();
                    splashspp = IOBlackBox->imageDepth();
                    splashbytes = splashwidth * splashheight * splashspp * sizeof(uchar);
                    splashScreen = (uchar *) malloc(splashbytes);
                    // take a permanent copy
                    memcpy(splashScreen, IOBlackBox->imageData(), splashbytes);
                    // set minimal information 
                    IOBlackBox->setImName(pathToSplash);
                    IOBlackBox->setCurrImgNbFrames(1);
                    break;
                } else {
                    warnprintf("showSimpleBanner: could not read file %s\n", pathToSplash);
                    // no joy there, try next string if possible
                    if (installpath[i] != '\0') {
                        j = 0;
                        i++;
                    } else
                        break;
                }
            }
        }     
    }
    // test again

    if (splashScreen != 0) {
	// then display it
	titleImage = new Fl_RGB_Image(splashScreen, splashwidth, splashheight);
	imageBox = new Fl_Box((mainWindow->w()-splashwidth)/2,
			  (mainWindow->h()-splashheight+menuheight)/2,
			  splashwidth, splashheight);
	titleImage->label(imageBox);
	mainWindow->add(imageBox);
	titleBox = bannerBox(5, 50, 160, 30);
    } else {

	tboxheight = TBOXHEIGHT;
	tboxwidth = mainWindow->w()-50; // say
    
	// show a simple text banner
	titleBox = bannerBox((mainWindow->w()-tboxwidth)/2,
			     (mainWindow->h()-tboxheight)/2,
			     tboxwidth, tboxheight);
    }
	    

    mainWindow->add(titleBox);
}

void removeSimpleBanner(void)
{
    if (titleBox) {      // && titleBox->visible()) {
	mainWindow->remove(titleBox);
	delete(titleBox);
	titleBox = 0;
	mainWindow->size_range(MINWIDTH,MINHEIGHT,appMaxWidth,appMaxHeight);
	dbgprintf("Removing size limits in removeSimpleBanner\n");
    }

    if (imageBox) {
	mainWindow->remove(imageBox);
	delete(imageBox);
	imageBox = 0;
    }
    if (titleImage) {
	delete(titleImage);
	titleImage = 0;
    }
}

static void printUnixUsage(char *fname)
{
    const char *newfname;
    char blankpad[DFLTSTRLEN];
    int  i = 0;

    newfname = myBaseName(fname);

    strcpy(blankpad, newfname);
    // converts to blanks
    while (blankpad[i] != '\0')
	blankpad[i++] = ' ';
    
    fprintf(stderr,
	    "Purpose: this application displays images\n" 
	    "Usage  : %s [-h] [-v] [-debug] [-stopdebug] [-h] [-v] [-C defaultLUT]\n" 
	    "         %s [-p pointfile] [-a] [-] [-mag defaultMagnification]\n" 
	    "         %s [-wt <sometitle>] [-delete] [-no_dblbuf]\n" 
	    "         %s [-hide_menubar] [-disable_menubar] [-disable_io_keys] \n"
	    "         %s [-disable_quit] [-locked] [-no_magick]\n"
	    "         %s [image1 [-c clut1]] [image2 [-c clut2]] ...\n"  
	    "\n" 
	    "%s-specific options:\n" 
	    "------------------------\n" 
	    "               - : reads an image from stdin\n" 
	    "              -a : reads and appends to an existing pointfile\n" 
	    "    -c <lutname> : Z-IMAGE type look-up table attached to preceding image\n"
	    " -C <defaultlut> : changes the default LUT for all images\n" 
	    "          -debug : prints gobs of debugging messages\n" 
	    "         -delete : deletes images after use\n" 
            "-disable_menubar : disable the main menu (but does not hide it)\n"
            "-disable_io_keys : disable I/O key shortcuts (open/close images, quit, etc)\n"
            "   -disable_quit : disable standard ways to quit the application (Esc, etc)\n"
            "            -fit : fits the image display to the window: no scrollbars\n"
            "   -force_magick : forces use of the ImageMagick library instead of native support\n"
            "      -force_raw : disable image format recognition, forces unknown/raw format\n"
	    "           -fork : sends itself to the background\n" 
	    "   -gamma <value>: specifies <value> as the default gamma\n"  
	    "              -h : this help\n" 
            "   -hide_menubar : hide the main menu (but does not disable it)\n"
            "         -locked : equivalent to all the disable_* and -hide_menubar flags set together\n" 
	    "    -mag <value> : changes the default magnification to <value>\n" 
            "      -no_dblbuf : do not use double-buffering at certain zoom factors\n"
	    "      -no_magick : use of library ImageMagick is disallowed (as it can be quite buggy)\n"
	    "  -p <pointfile> : specifies a point file name\n" 
	    "-portfile <file> : saves the TCP port number to <file>\n" 
	    "         -server : start the TCP image server\n" 
            "      -simple_pf : simplify pointfiles somewhat\n"
	    "      -stopdebug : not only that, but stops at each message\n" 
	    "              -v : prints version number\n"  
	    "     -wt <title> : sets the window title\n" 
	    "           image : GIF, ICS, JPEG, TIFF, Z-IMAGE or any type supported by ImageMagick.\n" 
	    "\n" 
	    "Other standard X11 options:\n" 
	    "---------------------------\n" 
	    "%s\n",
	    newfname,
	    blankpad,
	    blankpad,
	    blankpad,
	    blankpad,
	    blankpad,
	    newfname,
	    Fl::help);
    return;
}

static void printZusage(char *fname)
{
  fprintf(stderr,
	  "Purpose: displays images under X11\n"
	  "Usage  : %s(<image1>,[cmap:\"std_grey\"],<image2>,[cmap:\"std_grey\"],...\n"
	  "               ,[CMAP:\"std_grey\"],[file:\"pointfile\"],[append:\"F/T\"]\n"
          "               ,[mag:1.0], [xmax:1.0], [ymag:1.0], [gamma:1.0]\n"
	  "               ,[title:\"imview\"], [debug:\"F/T\"])\n"
	  "    <image1>, <image2>, ... is a list of arbitrary images\n"
	  "    cmap:\"some_LUT\" applies a colour LUT only to preceding image \n"
	  "                    on command line\n"
	  "    CMAP:\"some_LUT\" applies a colour LUT to all images on the command\n"
	  "                    line, except for those with a cmap: argument\n"
	  "    file:\"point_file_name\"  names the default file where points\n"
	  "                    location and values can be saved\n"
	  "    append:\"F/T\" appends to an existing pointfile\n"
	  "    mag/xmag/ymag:<xx.xx> changes the default magnification to <xx.xx> \n"
	  "    gamma:<x.xx> changes the default gamma value \n"
	  "    title:\"some_title\" changes the window title \n"
	  "    debug:\"F/T\" turns on some debugging messages\n",
	  myBaseName(fname)
      );

  return;
}

static void printCredits(char *fname)
{
    static char currentpath[DFLTSTRLEN];
    
    printf("%s version %s build #%d for %s. Made on %s by %s\n"
	   "Copyright Hugues Talbot, Image Analysis Group, CSIRO-MIS 1997-2003\n",
	   myBaseName(fname),
	   patchlevel,
	   totalbnb,
	   systemName(),
	   __DATE__,
   	   builder
	);
    // location
    getcwd(currentpath, DFLTSTRLEN);
    printf("Current path: %s\n", currentpath);
    printf("Running path: %s\n", runningpath);
    // more details concerning the configuration
    printf("Configuration:\n");
    printf("-------------------------------+-----\n");
#ifdef HAVE_TIFF
    printf("  - Native TIFF support:  Yes  | \n");
#else
    printf("  - Native TIFF support:       | No\n");
#endif
    printf("-------------------------------+-----\n");
#ifdef HAVE_JPEG
    printf("  - Native JPEG support:  Yes  | \n");
#else
    printf("  - Native JPEG support:       | No\n");
#endif
    printf("-------------------------------+-----\n");
#ifdef HAVE_PNG
    printf("  - Native PNG support :  Yes  | \n");
#else
    printf("  - Native PNG support :       | No\n");
#endif
    printf("-------------------------------+-----\n");
#ifdef HAVE_MAGICK
    printf("  - LibMagick support  :  Yes  | \n");
#else
    printf("  - LibMagick support  :       | No \n");
#endif
    printf("-------------------------------+-----\n");
#ifdef HAVE_PTHREADS
    printf("  - Image server       :  Yes  | \n");
#else
    printf("  - Image server       :       | No \n");
#endif
    printf("-------------------------------+-----\n");
#ifdef HAVE_SYSV_IPC
    printf("  - Unix SYSV IPC      :  Yes  | \n");
#else
    printf("  - Unix SYSV IPC      :       | No \n");
#endif
    printf("-------------------------------+-----\n");
#ifdef HAVE_POSIX_IPC
    printf("  - Unix POSIX IPC     :  Yes  | \n");
#else
    printf("  - Unix POSIX IPC     :       | No \n");
#endif
    printf("-------------------------------+-----\n");
    
    return;
}


// look for lut in given path
static char *clutFullPath(char *lutproto)
{
    int         i = 0;
    static char lutpath[DFLTSTRLEN];
    char       *dotp;

    if ((lutproto != 0) && (extpathlist != 0)) {
	while (extpathlist[i] != 0) {
	    sprintf(lutpath,"%s/%s", extpathlist[i], lutproto);
	    if (((dotp = strrchr(lutpath, '.')) == 0)
		|| (strcmp(dotp, CLUT_SUFFIX) != 0)) {
		// we need to add the .lut suffix
		strcat(lutpath, CLUT_SUFFIX);
	    }
	    if (access(lutpath, R_OK) == 0) {
		dbgprintf("Found lut %s\n", lutpath);
		return lutpath;
	    }
	    i++;
	}
	// if we get there this means we got no valid lut path
	errprintf("%s not a valid colour LUT\n", lutpath);
    }
	
    return 0;
}

// this little function will remove the \" at the end
// of stupid Z-IMAGE string arguments
static char *cleanZarg(char *input)
{
    char *pcbuf;
    int   k = 0;
    
    pcbuf = strdup(input); // the caller will  need to free this later on
    while ((pcbuf[k] != '\0') && (pcbuf[k] != '\"')) 
	k++;
    pcbuf[k] = '\0';

    return pcbuf;
}
    

// argument checking function
// this function may not return at all (calls exit)
// is is a bit too complicated because we try to
// support both the normal Unix command line and the Z-IMAGE
// quirky interface
void checkArgs(int argc, char **argv, char ***imagelist, char ***clutlist, double *defaultZoom, double *defaultGamma)
{
    int    i = 1, nbimages, j = 0, stl;
    int    k, fltk_args;
    bool   checkMinus = true; // check that arguments start with -, when false, even those will be considered images


    // empty the application name
    appName[0] = '\0';
    
    // allocate an image list no matter what
    *imagelist = new char *[argc];
    *clutlist = new char *[argc];
    
    // sensible default
    *defaultZoom = 1.0;
    *defaultGamma = 1.0;

    // empty optional portfile
    portfilename[0] = '\0';

    if (argc > 1) {    
	nbimages = argc - 1;
	// test to see if we are being called from Z-IMAGE
	stl = strlen(argv[1]);
	if (((stl >= 5)   // first part is for Z-IMAGE
	     && (argv[1][0] == 'z')
	     && (argv[1][1] == '_')
	     && (isdigit(argv[1][2]))
	     && (argv[1][stl-2] == '_')
	     && (argv[1][stl-1] == 'z'))
	    || ((strncmp(argv[1], "Zfile", 5) == 0) // second part is for SZ
		&& (argv[1][stl-1] == 'z') && (argv[1][stl-2] == '_')
		&& (isdigit(argv[1][5]))
		) ){
	    dbgprintf("We are being called from Z-IMAGE\n");
	    zimageArgs = 1;
	    i++;
	    nbimages--;
	}    

	while (i < argc) {
	    if ((fltk_args = Fl::arg(argc, argv, i)) != 0) { // test if argument recognized by FL
		nbimages -= fltk_args;
		continue; // i gets correctly incremented by Fl:arg
	    } else if (strncmp(argv[i], "-gamma", 6) == 0) {
		if (i+1 < argc) {
		    dbgprintf("Got new default gamma factor %s\n", argv[i+1]);
		    *defaultGamma = atof(argv[i+1]);
		    i += 2;
		    nbimages -= 2;
		} else {
		    errprintf("Incomplete argument %s\n", argv[i]);
		    // continue anyway
		    i++;
		    nbimages--;
		}
	    } else if (zimageArgs && (strncmp(argv[i], "gamma:", 6) == 0)) {
		char *p = cleanZarg(argv[i]+4);
		dbgprintf("Got new default gamma factor %s\n", p);
		*defaultGamma = atof(p);
		i++;
		nbimages--;
	    } else if ((strncmp(argv[i], "-debug", 6) == 0) // test for debugging
		       || (zimageArgs && (strncmp(argv[i], "debug:\"", 7) == 0)
			   && ((toupper(argv[i][7]) == 'T')
			       || (toupper(argv[i][7]) =='Y') ))) {
		printf("Debug is ON\n");
		debugIsOn = 1;
		
		i++;
		nbimages--;
	    } else if ((strncmp(argv[i], "-stopdebug", 10) == 0) // test for debugging
		       || (zimageArgs && (strncmp(argv[i], "stopdebug:\"", 11) == 0)
			   && ((toupper(argv[i][7]) == 'T')
			       || (toupper(argv[i][7]) =='Y') ))) {
		printf("Press any key after each debugging message\n");
		debugIsOn = 1;
		stopDebug = 1;
		i++;
		nbimages--;
	    } else if (zimageArgs && (strncmp(argv[i], "zdebug:\"", 6) == 0)) {
		// ignore argument
		i++;
		nbimages--;
	    } else if (strcmp(argv[i], "-p") == 0) {	 /*  */
		if (i+1 < argc) {
		    dbgprintf("Got default pointfile name: %s\n", argv[i+1]);
		    PtFileMngr->setPtFileName(argv[i+1]);
		    i += 2;       // we progress by 2 arguments on the command line:
		    nbimages -= 2; // -p and the argument after that.
		} else {
		    errprintf("Incomplete argument %s\n", argv[i]);
		    // but continue anyway...
		    i++;
		    nbimages--;
		}
	    } else if (zimageArgs && (strncmp(argv[i], "file:\"", 6) == 0)) {
		// this strdups the input argument
		char *p = cleanZarg(argv[i]+6);
		dbgprintf("Got default pointfile name: %s as Z argument\n", p);
		PtFileMngr->setPtFileName(p);
		i++;       // we progress by only one argument on the command line:
		nbimages--;
		// free the input argument
		free(p);
	    } else if ((strncmp(argv[i], "-a", 2) == 0) // we want to append data to a pointfile
		       || (zimageArgs && (strncmp(argv[i], "append:\"", 8) == 0)
			   && ((toupper(argv[i][8]) == 'T')
			       || (toupper(argv[i][8]) == 'Y')))) {
		dbgprintf("Pointfile append mode\n");
		appendPoints = 1;
		i++;
		nbimages--;
	    } else if (strncmp(argv[i], "-mag", 4) == 0) {
		if (i+1 < argc) {
		    dbgprintf("Got new default zoom factor %s\n", argv[i+1]);
		    *defaultZoom = atof(argv[i+1]);
		    i += 2;
		    nbimages -= 2;
		} else {
		    errprintf("Incomplete argument %s\n", argv[i]);
		    // continue anyway
		    i++;
		    nbimages--;
		}
	    } else if (zimageArgs && (strncmp(argv[i], "mag:", 4) == 0)) {
		char *p = cleanZarg(argv[i]+4);
		dbgprintf("Got new default zoom factor %s\n", p);
		*defaultZoom = atof(p);
		i++;
		nbimages--;
	    } else if (zimageArgs && ((strncmp(argv[i], "xmag:", 5) == 0)
				      || (strncmp(argv[i], "ymag:", 5) == 0))) {
		char *p = cleanZarg(argv[i]+5);
		dbgprintf("Got new default zoom factor %s\n", p);
		*defaultZoom = atof(p);
		i++;
		nbimages--;
	    } else if (strncmp(argv[i], "-fit", 4) == 0)  {
                displaymodepref = IMV_DISPLAY_IMG_FIT_WINDOW;
                ++i;
                --nbimages;
            } else if (strncmp(argv[i], "-dec", 4) == 0) {
                displaymodepref = IMV_DISPLAY_DECOUPLE_WIN_IMG;
                ++i;
                --nbimages;
            } else if (strncmp(argv[i], "-wt", 3) == 0) {
		if (i+1 < argc) {
		    dbgprintf("Got the window title: %s\n", argv[i+1]);
		    strcpy(appName, argv[i+1]);
		    i += 2;
		    nbimages -= 2;
		} else {
		    errprintf("Incomplete argument %s\n", argv[i]);
		    // continue anyway
		    i++;
		    nbimages--;
		}
	    } else if (zimageArgs && (strncmp(argv[i], "title:\"", 6) == 0)) {
		// this strdups the input argument
		char *p = cleanZarg(argv[i]+7);
		dbgprintf("Got window title: %s as Z argument\n", p);
		strcpy(appName, p);
		i++;       // we progress by only one argument on the command line:
		nbimages--;
		// free the input argument
		free(p);
	    } else if (strncmp(argv[i], "-server", 7) == 0) {
#ifdef HAVE_PTHREADS
		dbgprintf("We shall be starting the server momentarily\n");
		startServer = 1;
#else
		dbgprintf("Server not compiled in\n");
#endif
		i++;
		nbimages--;
	    } else if (strncmp(argv[i], "-servdebug", 10) == 0) {
		dbgprintf("Debugging the server\n");
		serverDebug = 1;
		i++;
		nbimages--;
	    } else if (strncmp(argv[i], "-fork", 5) == 0) {
		dbgprintf("Will fork by itself\n");
		performFork = true;
		i++;
		nbimages--;
	    } else if (strncmp(argv[i], "-ntchild", 8) == 0) {
		dbgprintf("we got restarted by a win32 CreateProcess\n");
		ntChild = true;
		i++;
		nbimages--;
	    } else if (strncmp(argv[i], "-darwinchild", 12) == 0) {
	      dbgprintf("We got restarted by a Darwin/MacOS/Carbon fork()\n");
	      darwinChild=true;
	      i++;
	      nbimages--;
	    } else if (strncmp(argv[i], "-delete", 7) == 0) {
		dbgprintf("We will delete images after use\n");
		deleteAfter = 1;
		i++;
		nbimages--;
	    } else if (strncmp(argv[i], "-portfile", 9) == 0) {
		dbgprintf("Port file is expected as next argument... \a");
		if (i+1 < argc) {
		    dbgprintf("got port file name: %s\b", argv[i+1]);
		    strncpy(portfilename, argv[i+1], PF_MAX_LEN);
		}
		i += 2;
		nbimages -= 2;
	    } else if (strncmp(argv[i], "-no_dblbuf", 9) == 0) {
                dbgprintf("not using offscreen buffer at zoom = 1.0\n");
                useOffscreenBuff = false;
                ++i;
                --nbimages;
            } else if (strncmp(argv[i], "-hide_menubar", 10) == 0) {
                dbgprintf("No main menu bar\n");
                hideMainMenu = true;
                ++i;
                --nbimages;
            } else if (strncmp(argv[i], "-disable_menubar", 16) == 0) {
                dbgprintf("Disabled main menu bar\n");
                disableMainMenu = true;
                ++i;
                --nbimages;
            } else if (strncmp(argv[i], "-disable_io_keys", 16) == 0) {
                dbgprintf("Disabled I/O related key shortcuts\n");
                disableIOKeys = true;
                ++i;
                --nbimages;
            } else if (strncmp(argv[i], "-disable_quit", 13) == 0) {
                dbgprintf("Imview will keep going forever...\n");
                disableQuit = true;
                ++i;
                --nbimages;
            } else if (strncmp(argv[i], "-locked", 7) == 0) {
                dbgprintf("Imview is locked on\n");
                hideMainMenu = true;
                disableMainMenu = true;
                disableIOKeys = true;
                disableQuit = true;
                ++i;
                --nbimages;
            } else if (strncmp(argv[i], "-no_magick", 10) == 0) {
		dbgprintf("Use of ImageMagick is disallowed\n");
		useMagick = false;
		++i;
		--nbimages;
	    } else if (strncmp(argv[i], "-force_magick", 13) == 0) {
                dbgprintf("Use of ImageMagick is forced\n");
		forceMagick = true;
		++i;
		--nbimages;
            } else if (strncmp(argv[i], "-force_raw", 10) == 0) {
                dbgprintf("Image format recognition disabled\n");
                forceRaw = true;
                ++i;
                --nbimages;
            } else if (strncmp(argv[i], "-simple_pf", 10) == 0) {
                dbgprintf("Simplify pointfile output\n");
		simplePointfile = true;
		++i;
		--nbimages;
            } else if (strncmp(argv[i], "-sync", 7) == 0) {
                dbgprintf("Synchronizing display\n");
                syncDisplay = true;
                 ++i;
                --nbimages;
            }  else if (strncmp(argv[i], "-v", 2) == 0) {
		printCredits(argv[0]);
		delete[] *imagelist;
		delete[] *clutlist;
		*imagelist = *clutlist = 0;
		imview_exit(0);
	    } else if (strncmp(argv[i], "-C", 2) == 0) {
		if (i+1 < argc) {
		    dbgprintf("Got default colourmap %s\n", argv[i+1]);
		    // ignore the colourmaps for the images up to the
		    // point where -C is declared.
		    for (k = 0 ; k < argc ; k++)
			if ((*clutlist)[k] == 0) {
			    // unix-style arguments are not strdup'ed
			    (*clutlist)[k] = argv[i+1];
			}
		    i += 2;        // we progress by 2 arguments on the command line 
		    nbimages -= 2; // (`-C' and argument after that)
		} else {
		    errprintf("Incomplete argument %s\n", argv[i]);
		    // but continue anyway...
		    i ++;
		    nbimages--;
		}
            } else if (zimageArgs && (strncmp(argv[i], "CMAP:\"", 6) == 0)) {
		dbgprintf("Applying colourmap %s to all images\n", argv[i]+6);
		for (k = 0 ; k < argc ; k++)
		    if ((*clutlist)[k] == 0) {
			// not very efficient but succinct
			(*clutlist)[k] = cleanZarg(argv[i]+6);
		    }
		i++;
		nbimages--; // only one argument gets processed in this case.
		// we don't make j progress because no specific image is involved.
	    } else if (strncmp(argv[i], "-c", 2) == 0) { // colourmaps
		if (i+1 < argc) {
		    dbgprintf("Got CLUT %s\n", argv[i+1]);
		    if (j > 0)
			(*clutlist)[j-1] = argv[i+1];
		    else
			errprintf("Colourmap %s doesn't apply to any image\n", argv[i+1]);
		    i += 2;         // -c
		    nbimages -= 2;  // and `lutname' make 2 arguments...
		} else {
		    errprintf("Incomplete argument %s\n", argv[i]);
		    // but continue anyway...
		    i ++;
		    nbimages--;
		}
	    } else if (zimageArgs && (strncmp(argv[i], "cmap:\"", 6) == 0)) {
		if (j > 0) {
		    if ((*clutlist)[j-1] != 0)
			free((*clutlist)[j-1]); // may have been set up by the CMAP: arg
		    // this will strdup the argument as well
		    (*clutlist)[j-1] = cleanZarg(argv[i]+6); 
		    dbgprintf("Got CLUT %s\n", (*clutlist)[j-1]);
		} else {
		    errprintf("Argument %s doesn't apply to any image\n", argv[i]);
		}
		i++; // only one argument gets processed in the Z case
		nbimages--;
	    } else if (strcmp(argv[i], "-") == 0) {
		// read from stdin
		dbgprintf("Reading from stdin\n");
		if (stdinToTemp() == 0) {
		    dbgprintf("Got image %s\n", imTempFileName);
		    (*imagelist)[j] = imTempFileName;
		    (*clutlist)[j++] = 0; // by default...
		} else {
		    errprintf("Couldn't create temporary file to read from standard input\n");
		    nbimages--;
		}
		i++;
	    } else if (strncmp(argv[i], "-h", 2) == 0) {  
		// ask for some help
		printUnixUsage(argv[0]);
		delete[] *imagelist;
		delete[] *clutlist;
		*imagelist = *clutlist = 0;
		imview_exit(0); // no error
	    } else if (strcmp(argv[i], "--") == 0) { // EXACTLY --
		checkMinus = false; // future arguments will be imaages...
		++i;
		--nbimages;
	    } else if (argv[i][0] == '-') { 
		// unrecognized argument
		stderrprintf("Argument %s unrecognized\n", argv[i]);
		delete[] *imagelist;
		delete[] *clutlist;
		*imagelist = *clutlist = 0;
		imview_exit(10); // this is an error
	    } else {
		// this is just an image name
		dbgprintf("Got image %s\n", argv[i]);
		(*imagelist)[j] = argv[i++];
		(*clutlist)[j++] = 0; // by default
	    }
	}

	// mark the end of the list:
	dbgprintf("Got %d image%c\n", nbimages,(nbimages > 1)?'s':'\0');
	(*imagelist)[nbimages] = 0;
	(*clutlist)[nbimages] = 0;

	if (zimageArgs && (nbimages == 0)) {
	    printZusage(argv[0]);
	    delete[] *imagelist;
	    delete[] *clutlist;
	    *imagelist = *clutlist = 0;
	    imview_exit(10);
	}
    } else {
	(*imagelist)[0] = (*clutlist)[0] = 0;
    }
	
    return;
}


void huntCLUT(const char **clutpathlist)
{
    int            i, j, nbext;
    const char    *q;
    char          *p, fullpath[DFLTSTRLEN];

    dbgprintf("----- LOOKING FOR LUTS -----\n");
    // expand the path list
    for (i = 0, j = 0 ; clutpathlist[i] != 0 ; i++) {
	if (clutpathlist[i][0] != 0) {
	    j++;
	    dbgprintf("Expanding %s\n", clutpathlist[i]);
	    q = clutpathlist[i];
	    while (*q) 
		if (*q++ == PATHSEP)  // : or ,
		    j++;
	}
    }
    nbext = j;
    dbgprintf("total number of paths: %d\n", nbext);
    extpathlist = new char *[nbext+1];
    // get all the starting points
    for (i = 0, j = 0 ; clutpathlist[i] != 0 ; i++) {
	if (clutpathlist[i][0] != 0) {
	    extpathlist[j++] = strdup(clutpathlist[i]);
	    q = clutpathlist[i];
	    while (*q) {
		if (*q++ == PATHSEP)
		    extpathlist[j++] = strdup(q);
	    }
	}
    }
    // list terminated by NULL
    extpathlist[nbext] = 0;

#ifdef WIN32_NOTCYGWIN // Windows way to look through directories
    long               done;
    struct _finddata_t c_file;
    char               fname[DFLTSTRLEN];

    // we force the use of POSIX paths
    for (i = 0 ; i < nbext ; i++) {
	p = strchr(extpathlist[i], PATHSEP);
	if (p) *p = '\0';

	// search this directory
	dbgprintf("Searching %s\n", extpathlist[i]);
	strncpy(fname, extpathlist[i], DFLTSTRLEN);
	// replaces all `\\' with `/'
	for (p = fname; *p != '\0' ; p++)
	    if (*p == '\\')
		*p = '/';
	// add the extension we are looking for
	strcat(fname, "/*.lut");
	if ((done = _findfirst(fname, &c_file)) != -1L) {
	    do {
		dbgprintf("Found: %s\n", c_file.name);
		strncpy(fullpath, extpathlist[i], DFLTSTRLEN-strlen(c_file.name)-1);
		strcat(fullpath, "/");
		strcat(fullpath, c_file.name);
		if (!mainMenuBar->isAlreadyInItemList(fullpath, CLUT_LIST_ID))
		    mainMenuBar->addToItemList(fullpath,CLUT_LIST_ID);
	    } while (_findnext(done, &c_file) == 0);
	}
	_findclose(done);
    }
    
#else // the Unix way
    DIR           *dirp;
    struct dirent *dp;
    char *name, *dotp;

    // get all the endpoints
    for (i = 0 ; i < nbext ; i++) {
	p = strchr(extpathlist[i], PATHSEP);
	if (p) *p = '\0';

	// search this directory
	dbgprintf("Searching %s\n", extpathlist[i]);
	if ((dirp = opendir (extpathlist[i])) == 0) {
	    warnprintf("huntCLUT: cannot access directory %s\n", extpathlist[i]);
	    continue; // skip over that one
	}
	// loop searching for lut files
	for (dp = readdir (dirp); dp != 0; dp = readdir (dirp)) {
	    name = dp->d_name;
	    if ((name != 0)
		&& ((dotp = strrchr(name,'.')) != 0)
		&& (strcmp (dotp,CLUT_SUFFIX) == 0)) {
		dbgprintf("Found: %s\n", name);
		strncpy(fullpath, extpathlist[i],  DFLTSTRLEN-strlen(name)-1);
		strcat(fullpath, "/");
		strcat(fullpath, name);
		if (!mainMenuBar->isAlreadyInItemList(fullpath, CLUT_LIST_ID))
		    mainMenuBar->addToItemList(fullpath,CLUT_LIST_ID);
	    }
	}
	closedir (dirp);
    }
#endif // WIN32_NOTCYGWIN
    
    dbgprintf("----- END OF LOOKING FOR LUTS -----\n");
    
    return;
}


void readUserPrefs(void)
{
    char        prefpath[DFLTSTRLEN];
    char        tmppath[DFLTSTRLEN];
    int         i, j;
    const char  *p;
    
    dbgprintf("----- LOOKING FOR PREFERENCES -----\n");
    // allocate the preferences manager, and initialise it with pref file
    fileprefs = new imprefs;

    currentprefspath[0] = '\0'; // initialize this to empty
    
    // read the user preferences if present
    if (((p = getenv("IMVIEWHOME")) != 0) || ((p = getenv("HOME")) != 0)) {
	strncpy(prefpath, p, DFLTSTRLEN);
        // keep these potential paths as the install path
        snprintf(installpath, DFLTSTRLEN, "%s%c%s", prefpath, PATHSEP, PrefPath);
    } else {
	snprintf(prefpath, DFLTSTRLEN, ".%c%s", PATHSEP, PrefPath); // look in the default installation directory (long shot)
        strncpy(installpath, prefpath, DFLTSTRLEN);
    }

#ifdef MACOSX_CARBON
    // MacOS/X peculiar .app containers
    char AppContainerPath[DFLTSTRLEN];
    snprintf(AppContainerPath, DFLTSTRLEN,"%c%s/../Resources", PATHSEP, runningpath);
    strncat(installpath, AppContainerPath, DFLTSTRLEN);
#endif
    
    for ( i = 0, j = 0; ; ) { // ever
	if ((prefpath[i] != PATHSEP) && (prefpath[i] != '\0')) {
	    tmppath[j++] = prefpath[i++];
	} else {
            tmppath[j++]   = SLASH; // end of string
	    tmppath[j] = '\0';
            strcat(tmppath, "preferences");
	    dbgprintf("looking in %s\n", tmppath);
	    if (fileprefs->readprefs(tmppath)) {
		strcpy(currentprefspath, tmppath); // save the location of the prefs file
		break; // found preferences, finished
	    } else { // no joy there, try next string if possible
		if (prefpath[i] != '\0') {
		    j = 0;
		    i++;
		} else
		    break;
	    }
	}
    }
    
    dbgprintf("----- END OF LOOKING FOR PREFERENCES -----\n");
    return;
}
	
    
// display the images given on the command line
// if possible. Otherwise shows a simple banner
void displayImages(char **imageList, char **lutList)
{
    int  i, openRes, displayOK;
    IMAGEPARM *p;
    const char *clutname;

    // try do display the images that were given on the command line,
    // if there are any...
    displayOK = 0;
    if (imageList && imageList[0]) {
	// place the names on the image list
	for (i = 0 ; imageList[i] != 0 ; i++) {
	    mainMenuBar->addToItemList(imageList[i],IMAGE_LIST_ID);
	    // attach LUT if possible
	    p = (IMAGEPARM *)mainMenuBar->getSelectedItemArgument(IMAGE_LIST_ID);
	    clutname = clutFullPath(lutList[i]);
	    if ((p != 0) && (clutname != 0)) {
		if (p->clutpath != 0)
		    free(p->clutpath);
		p->clutpath = strdup(clutname);
		dbgprintf("Attaching clut %s to image %s as default\n",
			  p->clutpath,
			  p->itempath);
	    }
	}
	// display the first valid image
	i = 0;
	displayOK = 1;
	while ((openRes = openimage(imageList[i])) != 0) {
	    // the current image is invalid: remove it from the list
	    dbgprintf("Unrecognized argument: %s\n", imageList[i]);
	    mainMenuBar->removeFromItemList(imageList[i], IMAGE_LIST_ID);
	    if (imageList[++i] == 0) {
		// we have exhausted all the options
		displayOK = 0;
		break;
	    }
	}
    }
    if (!displayOK) {
	showSimpleBanner();
    }

    return;
}

#ifdef HAVE_PTHREADS

// this handler will catch all the deadly signals.
// we do this only when the server starts. Experimentally very annoying
// things can happen in multithreaded applications
static void abortHandler(int sig)
{
    // implement the default handler if a disaster occurs
    // while we are still processing the previous disaster...
    signal(sig, SIG_DFL);
    im_longjmp(abortenv, 1);
}


void start_server(void)
{
    int             rval, nbsillymsg;
    pthread_attr_t  impthread_attr;

#ifndef WIN32_NOTCYGWIN
    // apparently this is standard practice to close stdin
    // in this case.
    fclose(stdin);
    fclose(stdout);
    // acutally we want to keep stderr: fclose(stderr);
    
#endif // WIN32_NOTCYGWIN
    
    // Under DU4.x, ending a thread might bring about a nasty ABORT
    dbgprintf("Setting up deadly signals handler\n");
    im_signal(SIGABRT, abortHandler);
    im_signal(SIGBUS, abortHandler);
    im_signal(SIGSEGV, abortHandler);
    im_signal(SIGKILL, abortHandler);
    im_signal(SIGHUP, abortHandler);
    im_signal(SIGQUIT, abortHandler);
    im_signal(SIGTERM, abortHandler);
    im_signal(SIGINT, abortHandler);
    if (im_setjmp(abortenv, 1) == 0) {
	if ((rval = pthread_attr_init(&impthread_attr)) == 0)
#if HAVE_DECTHREADS
	    rval = pthread_create(&serverthread,
				  impthread_attr,
				  (mt) init_server, 0);
#else // standard PTHREADS
	    rval = pthread_create(&serverthread,
				  &impthread_attr,
				  (mt) init_server, 0);
#endif
	    serverIsRunning = true;
	if (rval) {
	    errprintf("Server could not be started\n");
	} else
	    dbgprintf("Server started\n");
    } else {
        for (nbsillymsg = 0 ; silly_messages[nbsillymsg] != NULL; ++nbsillymsg)
            ;
	// we only get there via the signal handler
        int index = (int)((double)random()/INT_MAX * nbsillymsg);
        dbgprintf("Printing silly message %d\n", index);
	fprintf(stderr, "\n*** Aaargh, deadly signal caught: imview %s\n", silly_messages[index]);
	serverIsRunning = false;
	imview_exit(101); // will NOT call abort()
    }
	
    return;
}
#else // HAVE_PTHREADS
void start_server(void)
{}
#endif // HAVE_PTHREADS

// simple run function
void run(void)
{
    string       as;
    int          i;
    char         tmptitle[100];

    if (startServer) { // synchronize with server 
	i = 0;
#ifndef WIN32_NOTCYGWIN
	int maxcount = 200;
	while ((serverPortNumber == 0) && (i < maxcount)) {
	    myusleep(10000);
	    i++;
	}
#else
	int maxcount = 20;
	while ((serverPortNumber == 0) && (i < maxcount)) {
	    _sleep(1);
	    i++;
	}
#endif
	if (i < maxcount) { // no timeout
	    dbgprintf("Got port number after %d iterations\n", i);
	    sprintf(tmptitle, "[%d] %s", serverPortNumber, appName);
	    strncpy(appName, tmptitle, 100);
	    mainWindow->label(appName);
	} else {
	    dbgprintf("Didn't get port number :-(\n");
	    sprintf(tmptitle, "[%d] %s", serverPortNumber, appName);
	    strncpy(appName, tmptitle, 100);
	    mainWindow->label(appName);
	}
    }

    experimental_sync();
    
    while (!main_terminate) {
#ifdef HAVE_PTHREADS // surrogate for HAVE_SERVER...
	double       wp;
	unsigned int image_present;
	
	if (fileprefs) wp = fileprefs->pollFrequency();
	else wp = 100.0; // 100 Hz
	assert((wp > 1.0) && (wp < 10000.0)) ; // everything else is a bug
	Fl::wait(1/wp); // wait some controlled amount of time
	// if there is an interpreter, do something with it.
	if (imview_interpreter  && is) {
	    is->manage_commands();
	    // check to see if there is anything to display
	    image_present = IOBlackBox->checkDisplay(as);
	    if (image_present > 0) {
		// we have an image, display it.
		dbgprintf("An image is present: %s\n", as.c_str());
		openimage(as.c_str(), 0);
	    }
	    // see if an upload is in progress
	    if (progressPanel && progressPanel->visible()) {
		progressPanel->setProgress(simple_progress);
	    }
	}
#else
	Fl::wait();
#endif
	if (!mainWindow || !Fl::first_window()) // no window
	    break;
    }
    // if we get here this means it hadn't been called before...
    imview_exit(0);
}

// called when imview is about to exit
void imview_exit(int status, bool do_abort)
{
    int        j = 0, srval = 0;
    IMAGEPARM *p;
    cmi        q;

#ifdef HAVE_PTHREADS
    void      *server_return;

    // stop the server
    if (serverIsRunning) {
	server_terminate = true; // this will stop the server
	if (pthread_join(serverthread, &server_return) != 0) {
	    errprintf("Server thread failed to terminate gracefully");
	}
	srval = (long) server_return; // we know the return value is an int.
	dbgprintf("Server stopped\n");
    }
    
    // get rid of the interpreter
    if (imview_interpreter) {
        // this should free the interpreter resources such as shared memory,
        // semaphores, etc.
	delete imview_interpreter; 
	imview_interpreter = 0;
    }

#endif

    // if the user asked for physical deletion, just do it
    if (deleteAfter) {
	while ((p = (IMAGEPARM *)mainMenuBar->getSelectedItemArgument(IMAGE_LIST_ID)) != 0) {
	    // be a bit conservative: remove the image only if it is in one of the tmp directories
	    if (strstr(p->itempath, "/tmp/") != 0) {
		dbgprintf("Physically deleting the image %s\n", p->itempath);
		unlink(p->itempath);
	    } else {
		dbgprintf("Not deleting %s after all\n", p->itempath);
	    }
	    mainMenuBar->removeFromItemList(p->itempath, IMAGE_LIST_ID);     // this will change the selection...
	    p = (IMAGEPARM *)mainMenuBar->getSelectedItemArgument(IMAGE_LIST_ID); // therefore it is NO LONGER the same image as above
	} 
    }
    
    // delete allocated memory
    if (extpathlist != 0) {
	while (extpathlist[j] != 0)
	    free(extpathlist[j++]);
	delete[] extpathlist;
    }

    // did we create a temporary file?
    if (imTempFileName) {
	unlink(imTempFileName);
	free(imTempFileName);
    }

    // delete the temporary files in the Postscript map
    for (q = psfilemap.begin() ; q != psfilemap.end() ; q++) {
	dbgprintf("Erasing  %s, associated with file : %s\n", 
                  ((q->second).getfilename()).c_str(),  
                  (q->first).c_str());
	unlink((q->second).getfilename().c_str());
    }
    // empty the map
    psfilemap.clear();
    
    // what happens if we do that?
    delete PtFileMngr;

    // get rid of semaphores
    semaphore_destroy(&access_error);
    semaphore_destroy(&access_debug);

    if (!do_abort) {
	dbgprintf("Final message, after that is exit\n");
	
	if (!zimageArgs)
	    exit(status + (srval << 4));
	else
	    exit(255);  // z-image requires this as the exit status
    } else {
	dbgprintf("Boy, we caught a deadly signal\n");
	abort(); // this will override any abort handler
    }
}

/* send this process to the background, possibly waiting for some data
   from the child */
#ifndef WIN32_NOTCYGWIN

static void experimental_sync(void)
{
#if !defined(MACOSX_CARBON) && !defined(__CYGWIN__) // No X with Darwin or Cygwin
    dbgprintf("Syncing with X... \a");
    XSync(fl_display, False);
    dbgprintf("Done\b");
#endif
    hasSynced = true;
}

void unix_jobbg(void)
{
    // the following lines are a bit complicated
    // if a server is started and we are asked to put ourselves in the background
    //   A file is open in read/write mode. The client will
    //   block on read, waiting for the server to fill the file with
    //   one integer: the port number the server is bound to.
    // If we are in Z-IMAGE mode we put ourselves in the background
    // a fork is performed. 
    if (startServer && performFork) {
	// make a pipe between client and server
	if (pipe(pipepair) < 0) {
	    fprintf(stderr, "Could not create a pipe between parent and child: %s\n",
		    strerror(errno));
	    exit(10);
	}
	portfileDescriptor = pipepair[1]; // for the client (the child)
	if (portfileDescriptor == -1) {
	    fprintf(stderr, "Could not open pipe: %s",
		    strerror(errno));
	    exit(11);
	}
    }
    if ((zimageArgs || performFork)  && (fork()!=0)) {
	/* parent process */
	if (performFork && startServer) {
	    // block on read from pipe
	    portfileDescriptor = pipepair[0];
	    if (debugIsOn)
		fprintf(stderr, "Waiting for port number to appear\n");
	    int nbr = read(portfileDescriptor, (void *)&serverPortNumber, sizeof(int));
	    if (nbr != sizeof(int)) {
		fprintf(stderr, "Port number not returned in pipe\n");
		serverPortNumber = 0;
	    } else {
		if (debugIsOn)
		    fprintf(stderr,"Port number returned successfully: %d\n", serverPortNumber);
	    }
	    // at any rate, close the file-pipe
	    close(portfileDescriptor);
	    // maybe save the port number
	    if (portfilename[0] == '\0') {
		printf("Port: %d\n", serverPortNumber);
	    } else {
		FILE *fp = fopen(portfilename, "w");
		if (fp != NULL) {
		    fprintf(fp, "%d\n", serverPortNumber);
		    fclose(fp);
		} else {
		    fprintf(stderr, "Could not write port number %d to file %s: %s\n",
			    serverPortNumber, portfilename, strerror(errno));
		}
	    }
	}
	/* then call exit()--*/
	delete PtFileMngr;
	
	semaphore_destroy(&access_error);
	semaphore_destroy(&access_debug);
	
	myusleep(100000); // we seem to need this on some systems for the server port to be truly registered.
	if (zimageArgs)
	    exit(255); // required, means: no output image
	else
	    exit(0); // we shouldn't use the return status anyway
    }

    srv_dbgprintf("Child process (server) started\n");

    /* child */
    return;
}

// Darwin's fork() does not play nice with Carbon
// We need to do an exec() right after fork for it to be safe
// We also need to do some command line hacking like with NT.
void darwin_jobbg(int argc, char *argv[])
{
    // the following lines are a bit complicated
    // if a server is started and we are asked to put ourselves in the background
    //   A file is open in read/write mode. The client will
    //   block on read, waiting for the server to fill the file with
    //   one integer: the port number the server is bound to.
    // If we are in Z-IMAGE mode we put ourselves in the background
    // a fork is performed. 
    if (startServer && performFork) {
	// make a pipe between client and server
	if (pipe(pipepair) < 0) {
	    fprintf(stderr, "Could not create a pipe between parent and child: %s\n",
		    strerror(errno));
	    exit(10);
	}
	portfileDescriptor = pipepair[1]; // for the client (the child)
	if (portfileDescriptor == -1) {
	    fprintf(stderr, "Could not open pipe: %s",
		    strerror(errno));
	    exit(11);
	}
    }
    if (zimageArgs || performFork) {
      if (fork()!=0) {
	/* parent process */
	if (performFork && startServer) {
	    // block on read from pipe
	    portfileDescriptor = pipepair[0];
	    if (debugIsOn)
		fprintf(stderr, "Darwin O/S, waiting for port number to appear\n");
	    int nbr = read(portfileDescriptor, (void *)&serverPortNumber, sizeof(int));
	    if (nbr != sizeof(int)) {
		fprintf(stderr, "Darwin O/S: port number not returned in pipe\n");
		serverPortNumber = 0;
	    } else {
		if (debugIsOn)
		    fprintf(stderr,"Darwin O/S: port number returned successfully: %d\n", serverPortNumber);
	    }
	    // at any rate, close the file-pipe
	    close(portfileDescriptor);
	    // maybe save the port number
	    if (portfilename[0] == '\0') {
		printf("Darwin O/S, port: %d\n", serverPortNumber);
	    } else {
		FILE *fp = fopen(portfilename, "w");
		if (fp != NULL) {
		    fprintf(fp, "%d\n", serverPortNumber);
		    fclose(fp);
		} else {
		    fprintf(stderr, "Could not write port number %d to file %s: %s\n",
			    serverPortNumber, portfilename, strerror(errno));
		}
	    }
	}
	/* then call exit()--*/
	delete PtFileMngr;
	
	semaphore_destroy(&access_error);
	semaphore_destroy(&access_debug);
	
	myusleep(100000); // we seem to need this on some systems for the server port to be truly registered.
	if (zimageArgs)
	    exit(255); // required, means: no output image
	else
	    exit(0); // we shouldn't use the return status anyway
      } else {
	  /* child */
	  srv_dbgprintf("Child process (server) started\n");
	  // Unixery
	  char *cleanedCmd[DFLTSTRLEN];
	  int  i, cmdlen, l;
	  
	  srv_dbgprintf("Darwin process `backgroundisation'\n");
	  // empty string
	  memset(cleanedCmd, 0, DFLTSTRLEN); // all NULL pointers
	  for (i = 0, cmdlen = 0 ; i < argc ; i++) {
	    // replace the -fork argument...
	    if (strcmp(argv[i], "-fork") == 0) 
	      cleanedCmd[i] = "-darwinchild";
	    else
	      cleanedCmd[i] = argv[i]; // pointer copy should be OK
	    if (i >= DFLTSTRLEN-1)
	      break; // last argument.
	  }
	  srv_dbgprintf("Cleaned command has %d entries, looks likes this:\n", i);
	  for (l = 0 ; l < i ; ++l)
	    srv_dbgprintf("%s ", cleanedCmd[l]);
	  srv_dbgprintf("\n");
	  // redirect port descriptor to standard error (double redirection)
	  dup2(portfileDescriptor, 2); 
	  close(portfileDescriptor); // not needed after redirection

	  // now simply exec that command.
	  if (execvp(cleanedCmd[0], cleanedCmd) != 0) {
	    srv_dbgprintf("Execvp failed with error %d, %s\n", strerror(errno));
	    if (zimageArgs)
	      exit(255); // no output image
	    else
	      exit(1); // didn't work
	  }
	  srv_dbgprintf("Should not get there: exit call\n");
	  exit(0); // shouldn't get there
	}
      
    }

    if (darwinChild) {
      srv_dbgprintf("In the exec()ed child\n"); 
    }

    /* child */
    return;
}

#else // #ifndef WIN32_NOTCYGWIN

#include <windows.h>
#include <process.h>

static void experimental_sync(void)
{
    dbgprintf("WIN32 syncing: nothing to do\n");
    hasSynced = true;
}

// here we have no fork and pipes are hard to use, we'll try
// with CreateProcess (dead slow) and mailslots.
// Inspired by the book `win32 system programming' by J. M. Hart
// all other considerations apart, I find the code horrible to look at...
void nt_jobbg(int argc, char **argv)
{
    if (performFork) {
	STARTUPINFO StartUp;
	PROCESS_INFORMATION ProcessInfo;
	HANDLE hReadPipe, hWritePipe;
	
	// Unixery
	char cleanedCmd[DFLTSTRLEN], singleArg[100];
	int  i, cmdlen, l;
	
	dbgprintf("Win32/NT process `backgroundisation'\n");
	// empty string
	memset(cleanedCmd, 0, DFLTSTRLEN);
	for (i = 0, cmdlen = 0 ; i < argc ; i++) {
	    // replace the -fork argument...
	    if (strcmp(argv[i], "-fork") == 0)
		strcpy(singleArg, "-ntchild");
	    else
		strncpy(singleArg, argv[i], 100);
	    // concatenate the rest
	    l = strlen(singleArg);
	    // don't write past the end
	    if (cmdlen + l >= 1023)
		break;
	    else
		cmdlen += l;
	    strcat(cleanedCmd, singleArg);
	    strcat(cleanedCmd, " "); // one space
	}
	dbgprintf("Cleaned command is: %s\n", cleanedCmd);

	GetStartupInfo (&StartUp);

	
	// are we also starting the server? if so the parent will need to know the port number...
	// we'll use an anonymous pipe to pass the number to the parent.
	if (startServer) {
	    SECURITY_ATTRIBUTES PipeSA = {sizeof (SECURITY_ATTRIBUTES), NULL, TRUE}; // for the pipe
	    if (!CreatePipe(&hReadPipe, &hWritePipe, &PipeSA, 0))
		errprintf("Could not create anonymous pipe to get port number\n"); // we continue anyway
	    else {
		// the child's standard output will be through the pipe
		StartUp.hStdInput  = GetStdHandle (STD_INPUT_HANDLE);
		StartUp.hStdError  = GetStdHandle (STD_ERROR_HANDLE);
		StartUp.hStdOutput = hWritePipe;
		StartUp.dwFlags = STARTF_USESTDHANDLES;
	    }
	}
	
    	if (!CreateProcess (NULL,              // image Name. Not needed for some reason
			    _T(cleanedCmd),    // command line (arguments). Cleaned of -fork
			    NULL,              // default process security
			    NULL,              // default thread security
			    TRUE,              // Inherits handles (files, etc)
			    0,  // DETACHED_PROCESS |  CREATE_NEW_PROCESS_GROUP, // no console of its own, running, new group
			    NULL,              // use parent's environment (search path, etc)
			    NULL,              // starts in current (parent's) directory
			    &StartUp,          // get the startup information
			    &ProcessInfo)) {   // get the process information
	    errprintf("Process %s could not be started\n", cleanedCmd);
	    // we will die here
	} else {
	    if (startServer) {
		DWORD rb;
		// wait for the child to send something down the pipe
		if (!ReadFile(hReadPipe, (LPVOID)&serverPortNumber, (DWORD)sizeof(int), &rb, NULL)) {
		    errprintf("Could not read port number from child\n");
		} else {
		    dbgprintf("Parent: read %d bytes, port number: %d\n", rb, serverPortNumber);
		    if (portfilename[0] == '\0') {
			printf("Port: %d\n", serverPortNumber);
		    } else {
			FILE *fp = fopen(portfilename, "w");
			if (fp != NULL) {
			    fprintf(fp, "%d\n", serverPortNumber);
			    fclose(fp);
			} else {
			    fprintf(stderr, "Could not write port number %d to file %s: %s\n",
				    serverPortNumber, portfilename, strerror(errno));
			}
		    }
		}
		CloseHandle(hReadPipe);
		CloseHandle(hWritePipe);
	    }
	    CloseHandle (ProcessInfo.hThread);
	    CloseHandle (ProcessInfo.hProcess);
	    dbgprintf("New job started, pid=%d\n", ProcessInfo.dwProcessId);
	}
	/* then call exit()--*/
	delete PtFileMngr;
	semaphore_destroy(&access_error);
	semaphore_destroy(&access_debug);
	if (zimageArgs)
	    exit(255); // required, means: no output image
	else
	    exit(0); // we shouldn't use the return status
	
    } else if (ntChild) {
	/* child */
	dbgprintf("The Child is running\n");
	if (startServer)
	    portfileDescriptor = 1; // The portfile descriptor is just stdout = 1
    }
    return;
}

#endif // #ifndef WIN32_NOTCYGWIN

// Main function: entry point of the code.
int main(int argc, char **argv)
{
    int          i;
    char       **imageList, **clutList;
    const char  *p;
    char         zetcdir[DFLTSTRLEN];

    const char *clutpathlist[7];
    double      defaultZoom;



#if 0
    // temporary debug
    FILE *dbgargs;
    dbgargs = fopen("/tmp/imviewargs.txt", "w");
    for (i = 0 ; i < argc ; ++i)
        fprintf(dbgargs, "%03d: %s\n", i, argv[i]);
    fclose(dbgargs);
#endif // 0
    
    installpath[0] = '\0'; // empty install path
    p = myDirName(argv[0]);
    if (p != NULL)
        strncpy(runningpath, p, DFLTSTRLEN);
    else
        runningpath[0] = '\0';
    // we use both printf and cout, therefore:
    // sync_with_stdio();

    // the semaphores are needed right now because
    // imdebug & co use them, even if there is only one thread
    semaphore_init(&access_debug);
    semaphore_init(&access_error);

    // setup random number generator
#ifdef WIN32_NOTCYGWIN
    srand(time(NULL));
#else
    srandom(time(NULL));
#endif

    // the pointfile might be specified in the arguments
    // we need to define it early
    PtFileMngr = new pointfile;

#ifdef MACOSX_CARBON
    // register an "open callback"
    fl_open_callback(openfile_cb);
    Fl::scheme("plastic"); // more aqua like
#else
    Fl::scheme(NULL);
#endif 

    // now we can check the arguments,
    // returns an image list and an attached colour LUT list.
    checkArgs(argc, argv, &imageList, &clutList, &defaultZoom, &persistentGamma);

    // make sure we get the best display available
    // Only a problem on Suns so far
    Fl::visual(FL_RGB|FL_DOUBLE|FL_INDEX); 
    
    // experiment: early fork
    
#ifdef WIN32_NOTCYGWIN
    nt_jobbg(argc, argv);
#elif defined(DARWIN)
    darwin_jobbg(argc, argv);
#else
    unix_jobbg();
#endif

    // Useful for the file chooser
    Fl_File_Icon::load_system_icons();
    if (performFork) srv_dbgprintf("After load_system_icons()\n");
    
    // initializes the Image Magick Library
    initImageMagick(argv[0]); // only has an effect if ImageMagick is compiled in
    
    if (performFork) srv_dbgprintf("After initImageMagick()\n");

    // get the screen's dimensions

    //    // old code
    // fl_open_display();
    // appMaxWidth = XDisplayWidth(fl_display, fl_screen);
    // appMaxHeight= XDisplayHeight(fl_display, fl_screen);

    // new, more portable code
    appMaxWidth = Fl::w();
    appMaxHeight = Fl::h();

    // read the user preferences
    readUserPrefs();
    if (performFork) srv_dbgprintf("After readUserPrefs()\n");

    // useful when debugging, in effect only then.
    synchronize_GUI();
    if (performFork) srv_dbgprintf("After synchronize_GUI()\n");
        
    // maybe don't show the menu
    hideMainMenu |= fileprefs->hideMenu(); // hide menu from both the command line or the saved preferences
    if (hideMainMenu)
        menuheight = 0;
    else
        menuheight = MENUHEIGHT;

    // I don't like these arbitrary limits anymore Hugues Talbot	 5 Sep 2003
    //if (appMaxWidth > MINWIDTH+20) appMaxWidth -= 10; // window decoration on either side
    if (appMaxHeight > MINHEIGHT+MENUHEIGHT) appMaxHeight -= menuheight;
    dbgprintf("Application max window size are:%d x %d\n",
	      appMaxWidth, appMaxHeight);


    // allocate the diverse components of the application
    mainWindow = new  imviewWindow(SWIDTH, SHEIGHT - (MENUHEIGHT-menuheight) );
    mainWindow->size_range(MINWIDTH,MINHEIGHT,appMaxWidth,appMaxHeight);
    if (disableQuit)
        mainWindow->callback(noquit_cb);

    if (performFork) srv_dbgprintf("New window allocated\n");

    mainMenuBar = new imViewMenuBar(0,0,SWIDTH,menuheight);
    mainViewer = new imageViewer(0, menuheight, SWIDTH, SHEIGHT - MENUHEIGHT);
    mainWindow->end(); // this is the end of this group

    IOBlackBox = new imageIO;
    
    // give the imageIO to the mainViewer
    mainViewer->setImageIO(IOBlackBox);
    mainWindow->resizable(mainViewer);

    // set the name of the application up if not already done
    if (appName[0] == '\0') {
      strcpy(appName, myBaseName(argv[0]));
      mainWindow->iconlabel(appName);
    }
	      


    
    // hunt for colour LUT files
    clutpathlist[0] = ".";
    p = getenv("ZHOME");
    clutpathlist[1] = (p == 0) ? "":p;
    // some strange manipulation to append /etc
    strcpy(zetcdir, clutpathlist[1]);
    strcat(zetcdir, "/etc");
    clutpathlist[1] = (const char *)zetcdir;
    p = getenv("IMVIEWHOME");
    clutpathlist[2] = (p == 0) ? "":p;
    clutpathlist[3] = PrefPath; // defined in imcfg.h at configuration time
#ifdef MACOSX_CARBON
    char AppContainerPath[DFLTSTRLEN];
    strncpy(AppContainerPath, runningpath, DFLTSTRLEN);
    strncat(AppContainerPath, "/../Resources", DFLTSTRLEN);
    clutpathlist[4] = AppContainerPath;
    clutpathlist[5] = 0;
#else
    clutpathlist[4] = 0;
#endif
    huntCLUT(clutpathlist);

    if (performFork) srv_dbgprintf("HuntClut done\n");

    // sets the default point file if possible and necessary
    if (!PtFileMngr->getPtFileName()) {
	PtFileMngr->setPtFileName(DEFAULTPF);
    }

    // apply the default zoom factor if reasonable
    if (defaultZoom > 0) {
	mainViewer->setDefaultZoomFactor(defaultZoom);
	mainViewer->resetDisplay(false,true);
    } else
	errprintf("Default zoom factor %f ignored\n", defaultZoom);

    // display the images given on the command line
    displayImages(imageList, clutList);
    if (performFork) srv_dbgprintf("After displayImages()\n");

    // initialize the gamma transfer panel if need be
    if (persistentGamma != 1.0) {
	transferEditorPanel = new transfer;
	transfer &transferref = *transferEditorPanel;
	// initializes the fluid-generated panel
	transfer_panel(transferref);
	// do our own initialisation
	transferEditorPanel->setDefaults();
	// do not show it though
    }
    
    // add an icon to main window
    Pixmap icon_pixmap, icon_mask;
    XpmCreatePixmapFromData(fl_display, DefaultRootWindow(fl_display),
	                    imview_icon_xpm, &icon_pixmap, &icon_mask, NULL);
    mainWindow->icon((char *)icon_pixmap);
    if (performFork) srv_dbgprintf("About to put main window on screen\n");
    // show the main window
    mainWindow->show(argc, argv);
    if (performFork) srv_dbgprintf("Putting main window on screen\n");

    // initialize the file chooser
    fl_file_chooser_callback(filechooser_cb);

    // free the image list & the clut list
    if (zimageArgs) {
	i = -1;
	while (imageList[++i] != 0) 
	    if (clutList[i] != 0)
		free(clutList[i]); // all those names have been strdup'ed
    }
    delete[] imageList;
    delete[] clutList;

    // read the current pointfile if the user desires to
    if (appendPoints)
	PtFileMngr->readlist();

#ifdef HAVE_PTHREADS // surrogate for HAVE_SERVER
    if (startServer) {// do it
	// allocate an interpreter (no need for it otherwise)
	imview_interpreter = new interpreter;
	start_server(); // in its own thread
	if (performFork) srv_dbgprintf("Server started!\n");
    }
#endif
    
    // If the rawImagePanel is non-null at this point, this means the user is
    // trying to read an unrecognized-formatted image. Unfortunately the `unknown image format'
    // panel is created before the main panel, which hides it by default. We need to put it back
    // on top.  8 Jun 2000
    if (rawImagePanel != 0)
	rawImagePanel->show();

    // sets the system menu (if it exists)
    mainMenuBar->setSysMenu();
    
    // loop forever
    if (performFork) srv_dbgprintf("About to call run()\n");

    // our global run function
    run();

	
    return 0;
}