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[wxWidgets.git] / src / motif / utils.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        utils.cpp
// Purpose:     Various utilities
// Author:      Julian Smart
// Modified by:
// Created:     17/09/98
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart
// Licence:   	wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifdef __GNUG__
// Note: this is done in utilscmn.cpp now.
// #pragma implementation
// #pragma implementation "utils.h"
#endif

#include "wx/setup.h"
#include "wx/utils.h"
#include "wx/app.h"
#include "wx/msgdlg.h"
#include "wx/cursor.h"

#include <ctype.h>
#include <stdarg.h>
#include <dirent.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/wait.h>
#include <pwd.h>
#include <errno.h>
#include <netdb.h>
#include <signal.h>

#if defined(__SOLARIS__) || defined(__SVR4__) && !defined(__HPUX__)
#include <sys/systeminfo.h>
#endif

#if (defined(__SUNCC__) || defined(__CLCC__))
#include <sysent.h>
#endif

#include <Xm/Xm.h>

#include "wx/motif/private.h"

// Yuck this is really BOTH site and platform dependent
// so we should use some other strategy!
#ifdef sun
# define DEFAULT_XRESOURCE_DIR "/usr/openwin/lib/app-defaults"
#else
# define DEFAULT_XRESOURCE_DIR "/usr/lib/X11/app-defaults"
#endif

static char *GetIniFile (char *dest, const char *filename);

extern wxList wxTopLevelWindows;

// Get full hostname (eg. DoDo.BSn-Germany.crg.de)
bool wxGetHostName(char *buf, int maxSize)
{
#if defined(__SOLARIS__) || defined(__SVR4__) && !defined(__HPUX__)
    return (sysinfo (SI_HOSTNAME, buf, maxSize) != -1);
#else /* BSD Sockets */
    char name[255];
    struct hostent *h;
    
    // Get hostname
    if (gethostname (name, sizeof (name) / sizeof (char) - 1) == -1)
        return FALSE;
    // Get official full name of host
    strncpy (buf
        ,(h = gethostbyname (name)) != NULL ? h->h_name : name
        ,maxSize - 1);
    return TRUE;
#endif
}

// Get user ID e.g. jacs
bool wxGetUserId(char *buf, int maxSize)
{
#ifdef VMS
    *buf = '\0'; // return empty string
    return FALSE;
#else
    struct passwd *who;
    
    if ((who = getpwuid (getuid ())) != NULL)
    {
        strncpy (buf, who->pw_name, maxSize - 1);
        return TRUE;
    }
    return FALSE;
#endif
}

// Get user name e.g. Julian Smart
bool wxGetUserName(char *buf, int maxSize)
{
#ifdef VMS
    *buf = '\0'; // return empty string
    return FALSE;
#else
    struct passwd *who;
    
    if ((who = getpwuid (getuid ())) != NULL)
    {
        strncpy (buf, who->pw_gecos, maxSize - 1);
        return TRUE;
    }
    return FALSE;
#endif
}

int wxKill(long pid, int sig)
{
    int unixSignal = 0;
    switch (sig)
    {
    case wxSIGTERM:
    default:
        unixSignal = SIGTERM;
    }
    return kill( (int)pid, unixSignal);
}

//
// Execute a program in an Interactive Shell
//
bool wxShell(const wxString& command)
{
#ifdef VMS
    return(FALSE);
#else
#if defined(sun) || defined(__ultrix) || defined(__bsdi__)
    pid_t pid = vfork ();
#else
    pid_t pid = fork ();
#endif
    switch( pid ) {
    case -1:			/* error */
        return(FALSE);
    case 0:			/* child */
        // Generic X windows terminal window
        if (command != "")
            execlp("xterm", "-e", (char *) (const char*) command, NULL);
        else
            execlp("xterm", NULL);
        _exit(127);
    }
    return TRUE;
#endif
    // End VMS
}

// Get free memory in bytes, or -1 if cannot determine amount (e.g. on UNIX)
long wxGetFreeMemory()
{
    return -1;
}

void wxSleep(int nSecs)
{
    sleep(nSecs);
}

// Consume all events until no more left
void wxFlushEvents()
{
    Display *display = (Display*) wxGetDisplay();
    
    XSync (display, FALSE);
    XEvent event;
    // XtAppPending returns availability of events AND timers/inputs, which
    // are processed via callbacks, so XtAppNextEvent will not return if 
    // there are no events. So added '& XtIMXEvent' - Sergey.
    while (XtAppPending ((XtAppContext) wxTheApp->GetAppContext()) & XtIMXEvent)
    {
        XFlush (XtDisplay ((Widget) wxTheApp->GetTopLevelWidget()));
        // Jan Lessner: works better when events are non-X events
        XtAppProcessEvent((XtAppContext) wxTheApp->GetAppContext(), XtIMXEvent);
    }
}

// Output a debug message, in a system dependent fashion.
void wxDebugMsg(const char *fmt ...)
{
    va_list ap;
    char buffer[BUFSIZ];
    
    if (!wxTheApp->GetWantDebugOutput())
        return ;
    
    va_start (ap, fmt);
    
    vsprintf (buffer, fmt, ap);
    cerr << buffer;
    
    va_end (ap);
}

// Non-fatal error: pop up message box and (possibly) continue
void wxError(const wxString& msg, const wxString& title)
{
    cerr << (const char*) title << ": " << (const char*) msg << "\n";
}

// Fatal error: pop up message box and abort
void wxFatalError(const wxString& msg, const wxString& title)
{
    cerr << (const char*) title << ": " << (const char*) msg << "\n";
    exit (1);
}

// Emit a beeeeeep
void wxBell()
{
    // Use current setting for the bell
    XBell ((Display*) wxGetDisplay(), 0);
}

int wxGetOsVersion(int *majorVsn, int *minorVsn)
{
    // TODO
    // This code is WRONG!! Does NOT return the
    // Motif version of the libs but the X protocol
    // version! @@@@@ Fix ME!!!!!!!!!
    Display *display = XtDisplay ((Widget) wxTheApp->GetTopLevelWidget());
    if (majorVsn)
        *majorVsn = ProtocolVersion (display);
    if (minorVsn)
        *minorVsn = ProtocolRevision (display);
    return wxMOTIF_X;
}

// Reading and writing resources (eg WIN.INI, .Xdefaults)
#if wxUSE_RESOURCES

static char *GetResourcePath(char *buf, const char *name, bool create = FALSE)
{
    if (create && wxFileExists (name) ) {
        strcpy(buf, name);
        return buf; // Exists so ...
    }
    
    if (*name == '/')
        strcpy(buf, name);
    else {
        // Put in standard place for resource files if not absolute
        strcpy (buf, DEFAULT_XRESOURCE_DIR);
        strcat (buf, "/");
        strcat (buf, (const char*) wxFileNameFromPath (name));
    }
    
    if (create) {
        // Touch the file to create it
        FILE *fd = fopen (buf, "w");
        if (fd) fclose (fd);
    }
    return buf;
}

/*
* We have a cache for writing different resource files,
* which will only get flushed when we call wxFlushResources().
* Build up a list of resource databases waiting to be written.
*
*/

wxList wxResourceCache (wxKEY_STRING);

void 
wxFlushResources (void)
{
    char nameBuffer[512];
    
    wxNode *node = wxResourceCache.First ();
    while (node)
    {
        const char *file = node->GetKeyString();
        // If file doesn't exist, create it first.
        (void)GetResourcePath(nameBuffer, file, TRUE);
        
        XrmDatabase database = (XrmDatabase) node->Data ();
        XrmPutFileDatabase (database, nameBuffer);
        XrmDestroyDatabase (database);
        wxNode *next = node->Next ();
        delete node;
        node = next;
    }
}

static XrmDatabase wxResourceDatabase = 0;

void wxXMergeDatabases (wxApp * theApp, Display * display);

bool wxWriteResource(const wxString& section, const wxString& entry, const wxString& value, const wxString& file)
{
    char buffer[500];
    
    (void) GetIniFile (buffer, file);
    
    XrmDatabase database;
    wxNode *node = wxResourceCache.Find (buffer);
    if (node)
        database = (XrmDatabase) node->Data ();
    else
    {
        database = XrmGetFileDatabase (buffer);
        wxResourceCache.Append (buffer, (wxObject *) database);
    }
    
    char resName[300];
    strcpy (resName, (const char*) section);
    strcat (resName, ".");
    strcat (resName, (const char*) entry);
    
    XrmPutStringResource (&database, resName, value);
    return TRUE;
}

bool wxWriteResource(const wxString& section, const wxString& entry, float value, const wxString& file)
{
    char buf[50];
    sprintf(buf, "%.4f", value);
    return wxWriteResource(section, entry, buf, file);
}

bool wxWriteResource(const wxString& section, const wxString& entry, long value, const wxString& file)
{
    char buf[50];
    sprintf(buf, "%ld", value);
    return wxWriteResource(section, entry, buf, file);
}

bool wxWriteResource(const wxString& section, const wxString& entry, int value, const wxString& file)
{
    char buf[50];
    sprintf(buf, "%d", value);
    return wxWriteResource(section, entry, buf, file);
}

bool wxGetResource(const wxString& section, const wxString& entry, char **value, const wxString& file)
{
    if (!wxResourceDatabase)
    {
        Display *display = (Display*) wxGetDisplay();
        wxXMergeDatabases (wxTheApp, display);
    }
    
    XrmDatabase database;
    
    if (file != "")
    {
        char buffer[500];
        
        // Is this right? Trying to get it to look in the user's
        // home directory instead of current directory -- JACS
        (void) GetIniFile (buffer, file);
        
        wxNode *node = wxResourceCache.Find (buffer);
        if (node)
            database = (XrmDatabase) node->Data ();
        else
        {
            database = XrmGetFileDatabase (buffer);
            wxResourceCache.Append (buffer, (wxObject *) database);
        }
    }
    else
        database = wxResourceDatabase;
    
    XrmValue xvalue;
    char *str_type[20];
    char buf[150];
    strcpy (buf, section);
    strcat (buf, ".");
    strcat (buf, entry);
    
    Bool success = XrmGetResource (database, buf, "*", str_type,
        &xvalue);
    // Try different combinations of upper/lower case, just in case...
    if (!success)
    {
        buf[0] = (isupper (buf[0]) ? tolower (buf[0]) : toupper (buf[0]));
        success = XrmGetResource (database, buf, "*", str_type,
            &xvalue);
    }
    if (success)
    {
        if (*value)
            delete[] *value;
        
        *value = new char[xvalue.size + 1];
        strncpy (*value, xvalue.addr, (int) xvalue.size);
        return TRUE;
    }
    return FALSE;
}

bool wxGetResource(const wxString& section, const wxString& entry, float *value, const wxString& file)
{
    char *s = NULL;
    bool succ = wxGetResource(section, entry, (char **)&s, file);
    if (succ)
    {
        *value = (float)strtod(s, NULL);
        delete[] s;
        return TRUE;
    }
    else return FALSE;
}

bool wxGetResource(const wxString& section, const wxString& entry, long *value, const wxString& file)
{
    char *s = NULL;
    bool succ = wxGetResource(section, entry, (char **)&s, file);
    if (succ)
    {
        *value = strtol(s, NULL, 10);
        delete[] s;
        return TRUE;
    }
    else return FALSE;
}

bool wxGetResource(const wxString& section, const wxString& entry, int *value, const wxString& file)
{
    char *s = NULL;
    bool succ = wxGetResource(section, entry, (char **)&s, file);
    if (succ)
    {
        // Handle True, False here
        // True, Yes, Enables, Set or  Activated 
        if (*s == 'T' || *s == 'Y' || *s == 'E' || *s == 'S' || *s == 'A')
            *value = TRUE;
        // False, No, Disabled, Reset, Cleared, Deactivated
        else if (*s == 'F' || *s == 'N' || *s == 'D' || *s == 'R' || *s == 'C')
            *value = FALSE;
        // Handle as Integer
        else
            *value = (int) strtol (s, NULL, 10);
        delete[] s;
        return TRUE;
    }
    else
        return FALSE;
}

void wxXMergeDatabases (wxApp * theApp, Display * display)
{
    XrmDatabase homeDB, serverDB, applicationDB;
    char filenamebuf[1024];
    
    char *filename = &filenamebuf[0];
    char *environment;
    wxString classname = theApp->GetClassName();
    char name[256];
    (void) strcpy (name, "/usr/lib/X11/app-defaults/");
    (void) strcat (name, (const char*) classname);
    
    /* Get application defaults file, if any */
    applicationDB = XrmGetFileDatabase (name);
    (void) XrmMergeDatabases (applicationDB, &wxResourceDatabase);
    
    /* Merge server defaults, created by xrdb, loaded as a property of the root
    * window when the server initializes and loaded into the display
    * structure on XOpenDisplay;
    * if not defined, use .Xdefaults
    */
    
    if (XResourceManagerString (display) != NULL)
    {
        serverDB = XrmGetStringDatabase (XResourceManagerString (display));
    }
    else
    {
        (void) GetIniFile (filename, NULL);
        serverDB = XrmGetFileDatabase (filename);
    }
    XrmMergeDatabases (serverDB, &wxResourceDatabase);
    
    /* Open XENVIRONMENT file, or if not defined, the .Xdefaults,
    * and merge into existing database
    */
    
    if ((environment = getenv ("XENVIRONMENT")) == NULL)
    {
        size_t len;
        environment = GetIniFile (filename, NULL);
        len = strlen (environment);
#if defined(__SOLARIS__) || defined(__SVR4__) && !defined(__HPUX__)
        (void) sysinfo (SI_HOSTNAME, environment + len, 1024 - len);
#else
        (void) gethostname (environment + len, 1024 - len);
#endif
    }
    homeDB = XrmGetFileDatabase (environment);
    XrmMergeDatabases (homeDB, &wxResourceDatabase);
}

#if 0

/*
* Not yet used but may be useful.
*
*/
void 
wxSetDefaultResources (const Widget w, const char **resourceSpec, const char *name)
{
    int i;
    Display *dpy = XtDisplay (w);	// Retrieve the display pointer
    
    XrmDatabase rdb = NULL;	// A resource data base
    
    // Create an empty resource database
    rdb = XrmGetStringDatabase ("");
    
    // Add the Component resources, prepending the name of the component
    
    i = 0;
    while (resourceSpec[i] != NULL)
    {
        char buf[1000];
        
        sprintf (buf, "*%s%s", name, resourceSpec[i++]);
        XrmPutLineResource (&rdb, buf);
    }
    
    // Merge them into the Xt database, with lowest precendence
    
    if (rdb)
    {
#if (XlibSpecificationRelease>=5)
        XrmDatabase db = XtDatabase (dpy);
        XrmCombineDatabase (rdb, &db, FALSE);
#else
        XrmMergeDatabases (dpy->db, &rdb);
        dpy->db = rdb;
#endif
    }
}
#endif
// 0

#endif // wxUSE_RESOURCES

static int wxBusyCursorCount = 0;

// Helper function
static void 
wxXSetBusyCursor (wxWindow * win, wxCursor * cursor)
{
    Display *display = (Display*) win->GetXDisplay();
    
    Window xwin = (Window) win->GetXWindow();
    if (!xwin)
       return;

    XSetWindowAttributes attrs;
    
    if (cursor)
    {
        attrs.cursor = (Cursor) cursor->GetXCursor(display);
    }
    else
    {
        // Restore old cursor
        if (win->GetCursor()->Ok())
            attrs.cursor = (Cursor) win->GetCursor()->GetXCursor(display);
        else
            attrs.cursor = None;
    }
    if (xwin)
        XChangeWindowAttributes (display, xwin, CWCursor, &attrs);
    
    XFlush (display);
    
    for(wxNode *node = win->GetChildren().First (); node; node = node->Next())
    {
        wxWindow *child = (wxWindow *) node->Data ();
        wxXSetBusyCursor (child, cursor);
    }
}

// Set the cursor to the busy cursor for all windows
void wxBeginBusyCursor(wxCursor *cursor)
{
    wxBusyCursorCount++;
    if (wxBusyCursorCount == 1)
    {
        for(wxNode *node = wxTopLevelWindows.First (); node; node = node->Next())
        {
            wxWindow *win = (wxWindow *) node->Data ();
            wxXSetBusyCursor (win, cursor);
        }
    }
}

// Restore cursor to normal
void wxEndBusyCursor()
{
    if (wxBusyCursorCount == 0)
        return;
    
    wxBusyCursorCount--;
    if (wxBusyCursorCount == 0)
    {
        for(wxNode *node = wxTopLevelWindows.First (); node; node = node->Next())
        {
            wxWindow *win = (wxWindow *) node->Data ();
            wxXSetBusyCursor (win, NULL);
        }
    }
}

// TRUE if we're between the above two calls
bool wxIsBusy()
{
    return (wxBusyCursorCount > 0);
}    

const char* wxGetHomeDir( wxString *home  )
{
    *home = wxGetUserHome( wxString() );
    if (home->IsNull()) *home = "/";
    return *home;
};

char *wxGetUserHome (const wxString& user)
{
#ifdef VMS
    return(NULL);
#else
    struct passwd *who = NULL;
    
    if (user == "") {
        register char *ptr;
        
        if ((ptr = getenv("HOME")) != NULL) 
            return ptr;
        if ((ptr = getenv("USER")) != NULL ||
            (ptr = getenv("LOGNAME")) != NULL)
        {
            who = getpwnam( ptr );
        }
        // We now make sure the the user exists!
        if (who == NULL)
            who = getpwuid( getuid() );
    } else
        who = getpwnam ((const char*) user);
    
    return who ? who->pw_dir : (char*) NULL;
#endif
    // ifdef VMS
}

// Check whether this window wants to process messages, e.g. Stop button
// in long calculations.
bool wxCheckForInterrupt(wxWindow *wnd)
{
    if(wnd){
        Display *dpy=(Display*) wnd->GetXDisplay();
        Window win=(Window) wnd->GetXWindow();
        XEvent event;
        XFlush(dpy);
        if(wnd->GetMainWidget()){
            XmUpdateDisplay((Widget)(wnd->GetMainWidget()));
        }
        while(XCheckMaskEvent(dpy,
            ButtonPressMask|ButtonReleaseMask|ButtonMotionMask|
            PointerMotionMask|KeyPressMask|KeyReleaseMask,
            &event)){
            if(event.xany.window==win)
                XtDispatchEvent(&event);
            //		else
            //			XBell(dpy,50);
        }
        return TRUE;//*** temporary?
    }
    else{
        wxMessageBox("wnd==NULL !!!");
        return FALSE;//*** temporary?
    }
}

void wxGetMousePosition( int* x, int* y )
{
    XMotionEvent xev;
    Window root, child;
    XQueryPointer((Display*) wxGetDisplay(),
        DefaultRootWindow((Display*) wxGetDisplay()), &root, &child,
        &(xev.x_root), &(xev.y_root),
        &(xev.x),      &(xev.y),
        &(xev.state));
    *x = xev.x_root;
    *y = xev.y_root;
};

// Return TRUE if we have a colour display
bool wxColourDisplay()
{
    Display *dpy = (Display*) wxGetDisplay();
    
    if (DefaultDepth (dpy, DefaultScreen (dpy)) < 2)
        return FALSE;
    else
        return TRUE;
}

// Returns depth of screen
int wxDisplayDepth()
{
    Display *dpy = (Display*) wxGetDisplay();
    return DefaultDepth (dpy, DefaultScreen (dpy));
}

// Get size of display
void wxDisplaySize(int *width, int *height)
{
    Display *dpy = (Display*) wxGetDisplay();
    
    *width = DisplayWidth (dpy, DefaultScreen (dpy));
    *height = DisplayHeight (dpy, DefaultScreen (dpy));
}

/* Configurable display in Motif */
static WXDisplay *gs_currentDisplay = NULL;
static wxString gs_displayName;

WXDisplay *wxGetDisplay()
{
    if (gs_currentDisplay)
        return gs_currentDisplay;
    
    if (wxTheApp && wxTheApp->GetTopLevelWidget())
        return XtDisplay ((Widget) wxTheApp->GetTopLevelWidget());
    else if (wxTheApp)
        return wxTheApp->GetInitialDisplay();
    else
        return (WXDisplay*) NULL;
}

bool wxSetDisplay(const wxString& display_name)
{
    gs_displayName = display_name;
    
    if (display_name.IsNull() || display_name.IsEmpty())
    {
        gs_currentDisplay = NULL;
        return TRUE;
    }
    else
    {
        Cardinal argc = 0;
        
        Display *display = XtOpenDisplay((XtAppContext) wxTheApp->GetAppContext(),
            (const char*) display_name,
            (const char*) wxTheApp->GetAppName(),
            (const char*) wxTheApp->GetClassName(),
            NULL,
# if XtSpecificationRelease < 5
            0, &argc, NULL);
# else
        0, (int *)&argc, NULL);
# endif
        
        if (display)
        {
            gs_currentDisplay = (WXDisplay*) display;
            return TRUE;
        } else
            return FALSE;
    }
    return FALSE;
}

wxString wxGetDisplayName()
{
    return gs_displayName;
}

// Find the letter corresponding to the mnemonic, for Motif
char wxFindMnemonic (const char *s)
{
    char mnem = 0;
    int len = strlen (s);
    int i;
    for (i = 0; i < len; i++)
    {
        if (s[i] == '&')
        {
            // Carefully handle &&
            if ((i + 1) <= len && s[i + 1] == '&')
                i++;
            else
            {
                mnem = s[i + 1];
                break;
            }
        }
    }
    return mnem;
}

char * wxFindAccelerator (char *s)
{
    // The accelerator text is after the \t char.
    while (*s && *s != '\t')
        s++;
    if (*s == '\0')
        return (NULL);
    s++;
    /*
    Now we need to format it as X standard:
    
      input            output
      
        F7           --> <Key>F7
        Ctrl+N       --> Ctrl<Key>N
        Alt+k        --> Meta<Key>k
        Ctrl+Shift+A --> Ctrl Shift<Key>A
        
    */
    
    wxBuffer[0] = '\0';
    char *tmp = copystring (s);
    s = tmp;
    char *p = s;
    
    while (1)
    {
        while (*p && *p != '+')
            p++;
        if (*p)
        {
            *p = '\0';
            if (wxBuffer[0])
                strcat (wxBuffer, " ");
            if (strcmp (s, "Alt"))
                strcat (wxBuffer, s);
            else
                strcat (wxBuffer, "Meta");
            s = p + 1;
            p = s;
        }
        else
        {
            strcat (wxBuffer, "<Key>");
            strcat (wxBuffer, s);
            break;
        }
    }
    delete[]tmp;
    return wxBuffer;
}

XmString wxFindAcceleratorText (char *s)
{
    // The accelerator text is after the \t char.
    while (*s && *s != '\t')
        s++;
    if (*s == '\0')
        return (NULL);
    s++;
    XmString text = XmStringCreateSimple (s);
    return text;
}

#include <X11/keysym.h>

int wxCharCodeXToWX(KeySym keySym)
{
    int id;
    switch (keySym) {
    case XK_Shift_L:
    case XK_Shift_R:
        id = WXK_SHIFT; break;
    case XK_Control_L:
    case XK_Control_R:
        id = WXK_CONTROL; break;
    case XK_BackSpace:
        id = WXK_BACK; break;
    case XK_Delete:
        id = WXK_DELETE; break;
    case XK_Clear:
        id = WXK_CLEAR; break;
    case XK_Tab:
        id = WXK_TAB; break;
    case XK_numbersign:
        id = '#'; break;
    case XK_Return:
        id = WXK_RETURN; break;
    case XK_Escape:
        id = WXK_ESCAPE; break;
    case XK_Pause:
    case XK_Break:
        id = WXK_PAUSE; break;
    case XK_Num_Lock:
        id = WXK_NUMLOCK; break;
    case XK_Scroll_Lock:
        id = WXK_SCROLL; break;
        
    case XK_Home:
        id = WXK_HOME; break;
    case XK_End:
        id = WXK_END; break;
    case XK_Left:
        id = WXK_LEFT; break;
    case XK_Right:
        id = WXK_RIGHT; break;
    case XK_Up:
        id = WXK_UP; break;
    case XK_Down:
        id = WXK_DOWN; break;
    case XK_Next:
        id = WXK_NEXT; break;
    case XK_Prior:
        id = WXK_PRIOR; break;
    case XK_Menu:
        id = WXK_MENU; break;
    case XK_Select:
        id = WXK_SELECT; break;
    case XK_Cancel:
        id = WXK_CANCEL; break;
    case XK_Print:
        id = WXK_PRINT; break;
    case XK_Execute:
        id = WXK_EXECUTE; break;
    case XK_Insert:
        id = WXK_INSERT; break;
    case XK_Help:
        id = WXK_HELP; break;
        
    case XK_KP_Multiply:
        id = WXK_MULTIPLY; break;
    case XK_KP_Add:
        id = WXK_ADD; break;
    case XK_KP_Subtract:
        id = WXK_SUBTRACT; break;
    case XK_KP_Divide:
        id = WXK_DIVIDE; break;
    case XK_KP_Decimal:
        id = WXK_DECIMAL; break;
    case XK_KP_Equal:
        id = '='; break;
    case XK_KP_Space:
        id = ' '; break;
    case XK_KP_Tab:
        id = WXK_TAB; break;
    case XK_KP_Enter:
        id = WXK_RETURN; break;
    case XK_KP_0:
        id = WXK_NUMPAD0; break;
    case XK_KP_1:
        id = WXK_NUMPAD1; break;
    case XK_KP_2:
        id = WXK_NUMPAD2; break;
    case XK_KP_3:
        id = WXK_NUMPAD3; break;
    case XK_KP_4:
        id = WXK_NUMPAD4; break;
    case XK_KP_5:
        id = WXK_NUMPAD5; break;
    case XK_KP_6:
        id = WXK_NUMPAD6; break;
    case XK_KP_7:
        id = WXK_NUMPAD7; break;
    case XK_KP_8:
        id = WXK_NUMPAD8; break;
    case XK_KP_9:
        id = WXK_NUMPAD9; break;
    case XK_F1:
        id = WXK_F1; break;
    case XK_F2:
        id = WXK_F2; break;
    case XK_F3:
        id = WXK_F3; break;
    case XK_F4:
        id = WXK_F4; break;
    case XK_F5:
        id = WXK_F5; break;
    case XK_F6:
        id = WXK_F6; break;
    case XK_F7:
        id = WXK_F7; break;
    case XK_F8:
        id = WXK_F8; break;
    case XK_F9:
        id = WXK_F9; break;
    case XK_F10:
        id = WXK_F10; break;
    case XK_F11:
        id = WXK_F11; break;
    case XK_F12:
        id = WXK_F12; break;
    case XK_F13:
        id = WXK_F13; break;
    case XK_F14:
        id = WXK_F14; break;
    case XK_F15:
        id = WXK_F15; break;
    case XK_F16:
        id = WXK_F16; break;
    case XK_F17:
        id = WXK_F17; break;
    case XK_F18:
        id = WXK_F18; break;
    case XK_F19:
        id = WXK_F19; break;
    case XK_F20:
        id = WXK_F20; break;
    case XK_F21:
        id = WXK_F21; break;
    case XK_F22:
        id = WXK_F22; break;
    case XK_F23:
        id = WXK_F23; break;
    case XK_F24:
        id = WXK_F24; break;
    default:
        id = (keySym <= 255) ? (int)keySym : -1;
  } // switch
  return id;
}

KeySym wxCharCodeWXToX(int id)
{
    KeySym keySym;
    
    switch (id) {
    case WXK_CANCEL:            keySym = XK_Cancel; break;
    case WXK_BACK:              keySym = XK_BackSpace; break;
    case WXK_TAB:	        keySym = XK_Tab; break;
    case WXK_CLEAR:		keySym = XK_Clear; break;
    case WXK_RETURN:		keySym = XK_Return; break;
    case WXK_SHIFT:		keySym = XK_Shift_L; break;
    case WXK_CONTROL:		keySym = XK_Control_L; break;
    case WXK_MENU :		keySym = XK_Menu; break;
    case WXK_PAUSE:		keySym = XK_Pause; break;
    case WXK_ESCAPE:		keySym = XK_Escape; break;
    case WXK_SPACE:		keySym = ' '; break;
    case WXK_PRIOR:		keySym = XK_Prior; break;
    case WXK_NEXT :		keySym = XK_Next; break;
    case WXK_END:		keySym = XK_End; break;
    case WXK_HOME :		keySym = XK_Home; break;
    case WXK_LEFT :		keySym = XK_Left; break;
    case WXK_UP:		keySym = XK_Up; break;
    case WXK_RIGHT:		keySym = XK_Right; break;
    case WXK_DOWN :		keySym = XK_Down; break;
    case WXK_SELECT:		keySym = XK_Select; break;
    case WXK_PRINT:		keySym = XK_Print; break;
    case WXK_EXECUTE:		keySym = XK_Execute; break;
    case WXK_INSERT:		keySym = XK_Insert; break;
    case WXK_DELETE:		keySym = XK_Delete; break;
    case WXK_HELP :		keySym = XK_Help; break;
    case WXK_NUMPAD0:		keySym = XK_KP_0; break;
    case WXK_NUMPAD1:		keySym = XK_KP_1; break;
    case WXK_NUMPAD2:		keySym = XK_KP_2; break;
    case WXK_NUMPAD3:		keySym = XK_KP_3; break;
    case WXK_NUMPAD4:		keySym = XK_KP_4; break;
    case WXK_NUMPAD5:		keySym = XK_KP_5; break;
    case WXK_NUMPAD6:		keySym = XK_KP_6; break;
    case WXK_NUMPAD7:		keySym = XK_KP_7; break;
    case WXK_NUMPAD8:		keySym = XK_KP_8; break;
    case WXK_NUMPAD9:		keySym = XK_KP_9; break;
    case WXK_MULTIPLY:		keySym = XK_KP_Multiply; break;
    case WXK_ADD:		keySym = XK_KP_Add; break;
    case WXK_SUBTRACT:		keySym = XK_KP_Subtract; break;
    case WXK_DECIMAL:		keySym = XK_KP_Decimal; break;
    case WXK_DIVIDE:		keySym = XK_KP_Divide; break;
    case WXK_F1:		keySym = XK_F1; break;
    case WXK_F2:		keySym = XK_F2; break;
    case WXK_F3:		keySym = XK_F3; break;
    case WXK_F4:		keySym = XK_F4; break;
    case WXK_F5:		keySym = XK_F5; break;
    case WXK_F6:		keySym = XK_F6; break;
    case WXK_F7:		keySym = XK_F7; break;
    case WXK_F8:		keySym = XK_F8; break;
    case WXK_F9:		keySym = XK_F9; break;
    case WXK_F10:		keySym = XK_F10; break;
    case WXK_F11:		keySym = XK_F11; break;
    case WXK_F12:		keySym = XK_F12; break;
    case WXK_F13:		keySym = XK_F13; break;
    case WXK_F14:		keySym = XK_F14; break;
    case WXK_F15:		keySym = XK_F15; break;
    case WXK_F16:		keySym = XK_F16; break;
    case WXK_F17:		keySym = XK_F17; break;
    case WXK_F18:		keySym = XK_F18; break;
    case WXK_F19:		keySym = XK_F19; break;
    case WXK_F20:		keySym = XK_F20; break;
    case WXK_F21:		keySym = XK_F21; break;
    case WXK_F22:		keySym = XK_F22; break;
    case WXK_F23:		keySym = XK_F23; break;
    case WXK_F24:		keySym = XK_F24; break;
    case WXK_NUMLOCK:		keySym = XK_Num_Lock; break;
    case WXK_SCROLL:		keySym = XK_Scroll_Lock; break;
    default:                    keySym = id <= 255 ? (KeySym)id : 0;
    } // switch
    return keySym;
}

// Read $HOME for what it says is home, if not
// read $USER or $LOGNAME for user name else determine
// the Real User, then determine the Real home dir.
static char * GetIniFile (char *dest, const char *filename)
{
    char *home = NULL;
    if (filename && wxIsAbsolutePath(filename))
    {
        strcpy(dest, filename);
    }
    else if ((home = wxGetUserHome("")) != NULL)
    {
        strcpy(dest, home);
        if (dest[strlen(dest) - 1] != '/')
            strcat (dest, "/");
        if (filename == NULL)
        {
            if ((filename = getenv ("XENVIRONMENT")) == NULL)
                filename = ".Xdefaults";
        }
        else if (*filename != '.')
            strcat (dest, ".");
        strcat (dest, filename);
    } else
    {
        dest[0] = '\0';    
    }
    return dest;
}

/*
* Some colour manipulation routines
*/

void wxHSVToXColor(wxHSV *hsv,XColor *rgb)
{
    int h = hsv->h;
    int s = hsv->s;
    int v = hsv->v;
    int r, g, b;
    int i, f;
    int p, q, t;
    s = (s * wxMAX_RGB) / wxMAX_SV;
    v = (v * wxMAX_RGB) / wxMAX_SV;
    if (h == 360) h = 0;
    if (s == 0) { h = 0; r = g = b = v; }
    i = h / 60;
    f = h % 60;
    p = v * (wxMAX_RGB - s) / wxMAX_RGB;
    q = v * (wxMAX_RGB - s * f / 60) / wxMAX_RGB;
    t = v * (wxMAX_RGB - s * (60 - f) / 60) / wxMAX_RGB;
    switch (i) 
    {
    case 0: r = v, g = t, b = p; break;
    case 1: r = q, g = v, b = p; break;
    case 2: r = p, g = v, b = t; break;
    case 3: r = p, g = q, b = v; break;
    case 4: r = t, g = p, b = v; break;
    case 5: r = v, g = p, b = q; break;
    }
    rgb->red = r << 8;
    rgb->green = g << 8;
    rgb->blue = b << 8;
}

void wxXColorToHSV(wxHSV *hsv,XColor *rgb)
{
    int r = rgb->red >> 8;
    int g = rgb->green >> 8;
    int b = rgb->blue >> 8;
    int maxv = wxMax3(r, g, b);
    int minv = wxMin3(r, g, b);
    int h, s, v;
    v = maxv;
    if (maxv) s = (maxv - minv) * wxMAX_RGB / maxv;
    else s = 0;
    if (s == 0) h = 0;
    else 
    {
        int rc, gc, bc, hex;
        rc = (maxv - r) * wxMAX_RGB / (maxv - minv);
        gc = (maxv - g) * wxMAX_RGB / (maxv - minv);
        bc = (maxv - b) * wxMAX_RGB / (maxv - minv);
        if (r == maxv) { h = bc - gc, hex = 0; } 
        else if (g == maxv) { h = rc - bc, hex = 2; } 
        else if (b == maxv) { h = gc - rc, hex = 4; }
        h = hex * 60 + (h * 60 / wxMAX_RGB);
        if (h < 0) h += 360;
    }
    hsv->h = h;
    hsv->s = (s * wxMAX_SV) / wxMAX_RGB;
    hsv->v = (v * wxMAX_SV) / wxMAX_RGB;
}

void wxAllocNearestColor(Display *d,Colormap cmp,XColor *xc)
{
    int llp;
    
    int screen = DefaultScreen(d);
    int num_colors = DisplayCells(d,screen);
    
    XColor *color_defs = new XColor[num_colors];
    for(llp = 0;llp < num_colors;llp++) color_defs[llp].pixel = llp;
    XQueryColors(d,cmp,color_defs,num_colors);
    
    wxHSV hsv_defs, hsv;
    wxXColorToHSV(&hsv,xc);
    
    int diff, min_diff, pixel = 0;
    
    for(llp = 0;llp < num_colors;llp++)
    {
        wxXColorToHSV(&hsv_defs,&color_defs[llp]);
        diff = wxSIGN(wxH_WEIGHT * (hsv.h - hsv_defs.h)) +
            wxSIGN(wxS_WEIGHT * (hsv.s - hsv_defs.s)) +
            wxSIGN(wxV_WEIGHT * (hsv.v - hsv_defs.v));
        if (llp == 0) min_diff = diff;
        if (min_diff > diff) { min_diff = diff; pixel = llp; }
        if (min_diff == 0) break;
    }
    
    xc -> red = color_defs[pixel].red;
    xc -> green = color_defs[pixel].green;
    xc -> blue = color_defs[pixel].blue;
    xc -> flags = DoRed | DoGreen | DoBlue;
    if (!XAllocColor(d,cmp,xc))
        cout << "wxAllocNearestColor : Warning : Cannot find nearest color !\n";
    
    delete[] color_defs;
}

void wxAllocColor(Display *d,Colormap cmp,XColor *xc)
{
    if (!XAllocColor(d,cmp,xc))
    {
        //          cout << "wxAllocColor : Warning : Can not allocate color, attempt find nearest !\n";
        wxAllocNearestColor(d,cmp,xc);
    }
}


// These functions duplicate those in wxWindow, but are needed
// for use outside of wxWindow (e.g. wxMenu, wxMenuBar).

// Change a widget's foreground and background colours.

void wxDoChangeForegroundColour(WXWidget widget, wxColour& foregroundColour)
{
    // When should we specify the foreground, if it's calculated
    // by wxComputeColours?
    // Solution: say we start with the default (computed) foreground colour.
    // If we call SetForegroundColour explicitly for a control or window,
    // then the foreground is changed.
    // Therefore SetBackgroundColour computes the foreground colour, and
    // SetForegroundColour changes the foreground colour. The ordering is
    // important.
    
    XtVaSetValues ((Widget) widget,
        XmNforeground, foregroundColour.AllocColour(XtDisplay((Widget) widget)),
        NULL);
}

void wxDoChangeBackgroundColour(WXWidget widget, wxColour& backgroundColour, bool changeArmColour)
{
    wxComputeColours (XtDisplay((Widget) widget), & backgroundColour,
        (wxColour*) NULL);
    
    XtVaSetValues ((Widget) widget,
        XmNbackground, g_itemColors[wxBACK_INDEX].pixel,
        XmNtopShadowColor, g_itemColors[wxTOPS_INDEX].pixel,
        XmNbottomShadowColor, g_itemColors[wxBOTS_INDEX].pixel,
        XmNforeground, g_itemColors[wxFORE_INDEX].pixel,
        NULL);
    
    if (changeArmColour)
        XtVaSetValues ((Widget) widget,
        XmNarmColor, g_itemColors[wxSELE_INDEX].pixel,
        NULL);
}