path: root/hw/darwin/apple/X11Application.m

/* X11Application.m -- subclass of NSApplication to multiplex events
 
 Copyright (c) 2002-2007 Apple Inc.
 
 Permission is hereby granted, free of charge, to any person
 obtaining a copy of this software and associated documentation files
 (the "Software"), to deal in the Software without restriction,
 including without limitation the rights to use, copy, modify, merge,
 publish, distribute, sublicense, and/or sell copies of the Software,
 and to permit persons to whom the Software is furnished to do so,
 subject to the following conditions:
 
 The above copyright notice and this permission notice shall be
 included in all copies or substantial portions of the Software.
 
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 NONINFRINGEMENT.  IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT
 HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 DEALINGS IN THE SOFTWARE.
 
 Except as contained in this notice, the name(s) of the above
 copyright holders shall not be used in advertising or otherwise to
 promote the sale, use or other dealings in this Software without
 prior written authorization. */

#include "../quartz/quartzCommon.h"

#import "X11Application.h"
#include <Carbon/Carbon.h>

/* ouch! */
#define BOOL X_BOOL
# include "darwin.h"
# include "../quartz/quartz.h"
# define _APPLEWM_SERVER_
# include "X11/extensions/applewm.h"
# include "micmap.h"
#undef BOOL

#include <mach/mach.h>
#include <unistd.h>
#include <pthread.h>

#define DEFAULTS_FILE "/usr/X11/lib/X11/xserver/Xquartz.plist"

int X11EnableKeyEquivalents = TRUE;
int quartzHasRoot = FALSE, quartzEnableRootless = TRUE;

extern int darwinFakeButtons, input_check_flag;
// extern Bool enable_stereo; 
Bool enable_stereo;  //<-- this needs to go back to being an extern once glxCGL is fixed

extern xEvent *darwinEvents;

X11Application *X11App;

#define ALL_KEY_MASKS (NSShiftKeyMask | NSControlKeyMask | NSAlternateKeyMask | NSCommandKeyMask)

@implementation X11Application

typedef struct message_struct message;
struct message_struct {
    mach_msg_header_t hdr;
    SEL selector;
    NSObject *arg;
};

static mach_port_t _port;

static void send_nsevent (NSEventType type, NSEvent *e);

/* Quartz mode initialization routine. This is often dynamically loaded
 but is statically linked into this X server. */
extern Bool QuartzModeBundleInit(void);

static void init_ports (void) {
    kern_return_t r;
    NSPort *p;
	
    if (_port != MACH_PORT_NULL) return;
	
    r = mach_port_allocate (mach_task_self (), MACH_PORT_RIGHT_RECEIVE, &_port);
    if (r != KERN_SUCCESS) return;
	
    p = [NSMachPort portWithMachPort:_port];
    [p setDelegate:NSApp];
    [p scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
}

static void message_kit_thread (SEL selector, NSObject *arg) {
    message msg;
    kern_return_t r;
	
    msg.hdr.msgh_bits = MACH_MSGH_BITS (MACH_MSG_TYPE_MAKE_SEND, 0);
    msg.hdr.msgh_size = sizeof (msg);
    msg.hdr.msgh_remote_port = _port;
    msg.hdr.msgh_local_port = MACH_PORT_NULL;
    msg.hdr.msgh_reserved = 0;
    msg.hdr.msgh_id = 0;
	
    msg.selector = selector;
    msg.arg = [arg retain];
	
    r = mach_msg (&msg.hdr, MACH_SEND_MSG, msg.hdr.msgh_size,
		  0, MACH_PORT_NULL, 0, MACH_PORT_NULL);
    if (r != KERN_SUCCESS)
		ErrorF("%s: mach_msg failed: %x\n", __FUNCTION__, r);
}

- (void) handleMachMessage:(void *)_msg {
    message *msg = _msg;
	
    [self performSelector:msg->selector withObject:msg->arg];
    [msg->arg release];
}

- (void) set_controller:obj {
    if (_controller == nil) _controller = [obj retain];
}

- (void) dealloc {
    if (_controller != nil) [_controller release];
	
    if (_port != MACH_PORT_NULL)
		mach_port_deallocate (mach_task_self (), _port);
	
    [super dealloc];
}

- (void) orderFrontStandardAboutPanel: (id) sender {
    NSMutableDictionary *dict;
    NSDictionary *infoDict;
    NSString *tem;
	
    dict = [NSMutableDictionary dictionaryWithCapacity:2];
    infoDict = [[NSBundle mainBundle] infoDictionary];
	
    [dict setObject: NSLocalizedString (@"The X Window System", @"About panel")
			 forKey:@"ApplicationName"];
	
    tem = [infoDict objectForKey:@"CFBundleShortVersionString"];
	
    [dict setObject:[NSString stringWithFormat:@"X11.app %@ - X.org X11R7.3", tem] 
	  forKey:@"ApplicationVersion"];
	
    [self orderFrontStandardAboutPanelWithOptions: dict];
}

- (void) activateX:(BOOL)state {
    /* Create a TSM document that supports full Unicode input, and
	 have it activated while X is active (unless using the old
	 keymapping files) */
    static TSMDocumentID x11_document;
	
    if (state) {
      QuartzMessageServerThread (kXDarwinActivate, 0);
      
      if (!_x_active) {
	if (x11_document == 0 && darwinKeymapFile == NULL) {
	  OSType types[1];
	  types[0] = kUnicodeDocument;
	  NewTSMDocument (1, types, &x11_document, 0);
	}
	
	if (x11_document != 0)	ActivateTSMDocument (x11_document);
      }
    } else {
      QuartzMessageServerThread (kXDarwinDeactivate, 0);
      
      if (_x_active && x11_document != 0)
	DeactivateTSMDocument (x11_document);
    }
    
    _x_active = state;
}

- (void) became_key:(NSWindow *)win {
    [self activateX:NO];
}

- (void) sendEvent:(NSEvent *)e {
    NSEventType type;
    BOOL for_appkit, for_x;
	
    type = [e type];
	
    /* By default pass down the responder chain and to X. */
    for_appkit = YES;
    for_x = YES;
	
    switch (type) {
    case NSLeftMouseDown: case NSRightMouseDown: case NSOtherMouseDown:
    case NSLeftMouseUp: case NSRightMouseUp: case NSOtherMouseUp:
      if ([e window] != nil) {
	/* Pointer event has a window. Probably something for the kit. */
	
	for_x = NO;
	
	if (_x_active) [self activateX:NO];
      } else if ([self modalWindow] == nil) {
	/* Must be an X window. Tell appkit it doesn't have focus. */
			
	for_appkit = NO;
	
	if ([self isActive]) {
	  [self deactivate];
	  
	  if (!_x_active && quartzProcs->IsX11Window([e window], [e windowNumber]))
	    [self activateX:YES];
	}
      }
      break;
      
    case NSKeyDown: case NSKeyUp:
      if (_x_active) {
	static int swallow_up;
	
	/* No kit window is focused, so send it to X. */
	
	for_appkit = NO;
	
	if (type == NSKeyDown) {
	  /* Before that though, see if there are any global
	     shortcuts bound to it. */
	  
	  if (X11EnableKeyEquivalents
	      && [[self mainMenu] performKeyEquivalent:e]) {
	    swallow_up = [e keyCode];
	    for_x = NO;
	  } else if (!quartzEnableRootless
		   && ([e modifierFlags] & ALL_KEY_MASKS)
		   == (NSCommandKeyMask | NSAlternateKeyMask)
		   && ([e keyCode] == 0 /*a*/
		       || [e keyCode] == 53 /*Esc*/)) {
	    swallow_up = 0;
	    for_x = NO;
#ifdef DARWIN_DDX_MISSING
	    QuartzMessageServerThread (kXDarwinToggleFullscreen, 0);
#endif
	  }
	} else {
	  /* If we saw a key equivalent on the down, don't pass
	     the up through to X. */
	  
	  if (swallow_up != 0 && [e keyCode] == swallow_up) {
	    swallow_up = 0;
	    for_x = NO;
	  }
	}
      }
      else for_x = NO;
      break;
		
    case NSFlagsChanged:
      /* For the l33t X users who remap modifier keys to normal keysyms. */
      if (!_x_active)
	for_x = NO;
      break;
		
    case NSAppKitDefined:
      switch ([e subtype]) {
      case NSApplicationActivatedEventType:
	for_x = NO;
	if ([self modalWindow] == nil) {
	  for_appkit = NO;
	  
	  /* FIXME: hack to avoid having to pass the event to appkit,
	     which would cause it to raise one of its windows. */
	  _appFlags._active = YES;
	  
	  [self activateX:YES];
	  if ([e data2] & 0x10) X11ApplicationSetFrontProcess();
	}
	break;
			
      case 18: /* ApplicationDidReactivate */
	if (quartzHasRoot) for_appkit = NO;
	break;
			
      case NSApplicationDeactivatedEventType:
	for_x = NO;
	[self activateX:NO];
	break;
      }
      break;
      
    default: break; /* for gcc */
    }
	
    if (for_appkit) [super sendEvent:e];
    if (for_x) send_nsevent (type, e);
}

- (void) set_window_menu:(NSArray *)list {
    [_controller set_window_menu:list];
}

- (void) set_window_menu_check:(NSNumber *)n {
    [_controller set_window_menu_check:n];
}

- (void) set_apps_menu:(NSArray *)list {
    [_controller set_apps_menu:list];
}

- (void) set_front_process:unused {
    [NSApp activateIgnoringOtherApps:YES];
	
    if ([self modalWindow] == nil) [self activateX:YES];
    QuartzMessageServerThread(kXDarwinBringAllToFront, 0);
}

- (void) set_can_quit:(NSNumber *)state {
    [_controller set_can_quit:[state boolValue]];
}

- (void) server_ready:unused {
    [_controller server_ready];
}

- (void) show_hide_menubar:(NSNumber *)state {
    if ([state boolValue]) ShowMenuBar ();
    else HideMenuBar ();
}


/* user preferences */

/* Note that these functions only work for arrays whose elements
 can be toll-free-bridged between NS and CF worlds. */

static const void *cfretain (CFAllocatorRef a, const void *b) {
    return CFRetain (b);
}

static void cfrelease (CFAllocatorRef a, const void *b) {
    CFRelease (b);
}

static CFMutableArrayRef nsarray_to_cfarray (NSArray *in) {
    CFMutableArrayRef out;
    CFArrayCallBacks cb;
    NSObject *ns;
    const CFTypeRef *cf;
    int i, count;
	
    memset (&cb, 0, sizeof (cb));
    cb.version = 0;
    cb.retain = cfretain;
    cb.release = cfrelease;
	
    count = [in count];
    out = CFArrayCreateMutable (NULL, count, &cb);
	
    for (i = 0; i < count; i++) {
      ns = [in objectAtIndex:i];
      
      if ([ns isKindOfClass:[NSArray class]])
	cf = (CFTypeRef) nsarray_to_cfarray ((NSArray *) ns);
      else
	cf = CFRetain ((CFTypeRef) ns);
      
      CFArrayAppendValue (out, cf);
      CFRelease (cf);
    }
    
    return out;
}

static NSMutableArray * cfarray_to_nsarray (CFArrayRef in) {
    NSMutableArray *out;
    const CFTypeRef *cf;
    NSObject *ns;
    int i, count;
	
    count = CFArrayGetCount (in);
    out = [[NSMutableArray alloc] initWithCapacity:count];
	
    for (i = 0; i < count; i++) {
      cf = CFArrayGetValueAtIndex (in, i);
		
      if (CFGetTypeID (cf) == CFArrayGetTypeID ())
	ns = cfarray_to_nsarray ((CFArrayRef) cf);
      else
	ns = [(id)cf retain];
      
      [out addObject:ns];
      [ns release];
    }
    
    return out;
}

- (CFPropertyListRef) prefs_get:(NSString *)key {
    CFPropertyListRef value;
	
    value = CFPreferencesCopyAppValue ((CFStringRef) key, CFSTR (APP_PREFS));
	
    if (value == NULL) {
      static CFDictionaryRef defaults;
      
      if (defaults == NULL) {
	CFStringRef error = NULL;
	CFDataRef data;
	CFURLRef url;
	SInt32 error_code;
	
	url = (CFURLCreateFromFileSystemRepresentation
	       (NULL, (unsigned char *)DEFAULTS_FILE, strlen (DEFAULTS_FILE), false));
	if (CFURLCreateDataAndPropertiesFromResource (NULL, url, &data,
						      NULL, NULL, &error_code)) {
	  defaults = (CFPropertyListCreateFromXMLData
		      (NULL, data, kCFPropertyListMutableContainersAndLeaves, &error));
	  if (error != NULL) CFRelease (error);
	  CFRelease (data);
	}
	CFRelease (url);
			
	if (defaults != NULL) {
	  NSMutableArray *apps, *elt;
	  int count, i;
	  NSString *name, *nname;
	  
	  /* Localize the names in the default apps menu. */
	  
	  apps = [(NSDictionary *)defaults objectForKey:@PREFS_APPSMENU];
	  if (apps != nil) {
	    count = [apps count];
	    for (i = 0; i < count; i++)	{
	      elt = [apps objectAtIndex:i];
	      if (elt != nil && [elt isKindOfClass:[NSArray class]]) {
		name = [elt objectAtIndex:0];
		if (name != nil) {
		  nname = NSLocalizedString (name, nil);
		  if (nname != nil && nname != name)
		    [elt replaceObjectAtIndex:0 withObject:nname];
		}
	      }
	    }
	  }
	}
      }
		
      if (defaults != NULL) value = CFDictionaryGetValue (defaults, key);
      if (value != NULL) CFRetain (value);
    }
	
    return value;
}

- (int) prefs_get_integer:(NSString *)key default:(int)def {
  CFPropertyListRef value;
  int ret;
  
  value = [self prefs_get:key];
  
  if (value != NULL && CFGetTypeID (value) == CFNumberGetTypeID ())
    CFNumberGetValue (value, kCFNumberIntType, &ret);
  else if (value != NULL && CFGetTypeID (value) == CFStringGetTypeID ())
    ret = CFStringGetIntValue (value);
  else
    ret = def;
  
  if (value != NULL) CFRelease (value);
  
  return ret;
}

- (const char *) prefs_get_string:(NSString *)key default:(const char *)def {
  CFPropertyListRef value;
  const char *ret = NULL;
  
  value = [self prefs_get:key];
  
  if (value != NULL && CFGetTypeID (value) == CFStringGetTypeID ()) {
    NSString *s = (NSString *) value;
    
    ret = [s UTF8String];
  }
  
  if (value != NULL) CFRelease (value);
  
  return ret != NULL ? ret : def;
}

- (float) prefs_get_float:(NSString *)key default:(float)def {
  CFPropertyListRef value;
  float ret = def;
  
  value = [self prefs_get:key];
  
  if (value != NULL
      && CFGetTypeID (value) == CFNumberGetTypeID ()
      && CFNumberIsFloatType (value)) 
    CFNumberGetValue (value, kCFNumberFloatType, &ret);
  else if (value != NULL && CFGetTypeID (value) == CFStringGetTypeID ())
    ret = CFStringGetDoubleValue (value);
	
  if (value != NULL) CFRelease (value);
  
  return ret;
}

- (int) prefs_get_boolean:(NSString *)key default:(int)def {
  CFPropertyListRef value;
  int ret = def;
  
  value = [self prefs_get:key];
  
  if (value != NULL) {
    if (CFGetTypeID (value) == CFNumberGetTypeID ())
      CFNumberGetValue (value, kCFNumberIntType, &ret);
    else if (CFGetTypeID (value) == CFBooleanGetTypeID ())
      ret = CFBooleanGetValue (value);
    else if (CFGetTypeID (value) == CFStringGetTypeID ()) {
      const char *tem = [(NSString *) value lossyCString];
      if (strcasecmp (tem, "true") == 0 || strcasecmp (tem, "yes") == 0)
	ret = YES;
      else
	ret = NO;
    }
    
    CFRelease (value);
  }
  return ret;
}

- (NSArray *) prefs_get_array:(NSString *)key {
  NSArray *ret = nil;
  CFPropertyListRef value;
  
  value = [self prefs_get:key];
  
  if (value != NULL) {
    if (CFGetTypeID (value) == CFArrayGetTypeID ())
      ret = [cfarray_to_nsarray (value) autorelease];
    
    CFRelease (value);
  }
  
  return ret;
}

- (void) prefs_set_integer:(NSString *)key value:(int)value {
    CFNumberRef x;
	
    x = CFNumberCreate (NULL, kCFNumberIntType, &value);
	
    CFPreferencesSetValue ((CFStringRef) key, (CFTypeRef) x, CFSTR (APP_PREFS),
			   kCFPreferencesCurrentUser, kCFPreferencesAnyHost);
	
    CFRelease (x);
}

- (void) prefs_set_float:(NSString *)key value:(float)value {
    CFNumberRef x;
	
    x = CFNumberCreate (NULL, kCFNumberFloatType, &value);
	
    CFPreferencesSetValue ((CFStringRef) key, (CFTypeRef) x, CFSTR (APP_PREFS),
			   kCFPreferencesCurrentUser, kCFPreferencesAnyHost);
	
    CFRelease (x);
}

- (void) prefs_set_boolean:(NSString *)key value:(int)value {
  CFPreferencesSetValue ((CFStringRef) key,
			 (CFTypeRef) value ? kCFBooleanTrue
			 : kCFBooleanFalse, CFSTR (APP_PREFS),
			 kCFPreferencesCurrentUser, kCFPreferencesAnyHost);
  
}

- (void) prefs_set_array:(NSString *)key value:(NSArray *)value {
  CFArrayRef cfarray;
  
  cfarray = nsarray_to_cfarray (value);
  CFPreferencesSetValue ((CFStringRef) key,
			 (CFTypeRef) cfarray,
			 CFSTR (APP_PREFS),
			 kCFPreferencesCurrentUser, kCFPreferencesAnyHost);
  CFRelease (cfarray);
}

- (void) prefs_set_string:(NSString *)key value:(NSString *)value {
  CFPreferencesSetValue ((CFStringRef) key, (CFTypeRef) value,
			 CFSTR (APP_PREFS), kCFPreferencesCurrentUser,
			 kCFPreferencesAnyHost);
}

- (void) prefs_synchronize {
    CFPreferencesAppSynchronize (kCFPreferencesCurrentApplication);
}

- (void) read_defaults {
  const char *tem;
  
  quartzUseSysBeep = [self prefs_get_boolean:@PREFS_SYSBEEP
			   default:quartzUseSysBeep];
  quartzEnableRootless = [self prefs_get_boolean:@PREFS_ROOTLESS
			       default:quartzEnableRootless];
#ifdef DARWIN_DDX_MISSING
  quartzFullscreenDisableHotkeys = ![self prefs_get_boolean:
					    @PREFS_FULLSCREEN_HOTKEYS default:
					    !quartzFullscreenDisableHotkeys];
  quartzXpluginOptions = [self prefs_get_integer:@PREFS_XP_OPTIONS
			       default:quartzXpluginOptions];
#endif
  
  darwinSwapAltMeta = [self prefs_get_boolean:@PREFS_SWAP_ALT_META
			    default:darwinSwapAltMeta];
  darwinFakeButtons = [self prefs_get_boolean:@PREFS_FAKEBUTTONS
			    default:darwinFakeButtons];
  if (darwinFakeButtons) {
    const char *fake2, *fake3;
    
    fake2 = [self prefs_get_string:@PREFS_FAKE_BUTTON2 default:NULL];
    fake3 = [self prefs_get_string:@PREFS_FAKE_BUTTON3 default:NULL];
													      
     if (fake2 != NULL) darwinFakeMouse2Mask = DarwinParseModifierList(fake2);
     if (fake3 != NULL) darwinFakeMouse3Mask = DarwinParseModifierList(fake3);
		
  }
	
  X11EnableKeyEquivalents = [self prefs_get_boolean:@PREFS_KEYEQUIVS
				  default:X11EnableKeyEquivalents];
	
  darwinSyncKeymap = [self prefs_get_boolean:@PREFS_SYNC_KEYMAP
			   default:darwinSyncKeymap];
	
  tem = [self prefs_get_string:@PREFS_KEYMAP_FILE default:NULL];

  if (tem != NULL) darwinKeymapFile = strdup (tem);
  else darwinKeymapFile = NULL;
	
  darwinDesiredDepth = [self prefs_get_integer:@PREFS_DEPTH
			     default:darwinDesiredDepth];
	
  enable_stereo = [self prefs_get_boolean:@PREFS_ENABLE_STEREO
			default:false];
}

/* This will end up at the end of the responder chain. */
- (void) copy:sender {
  QuartzMessageServerThread (kXDarwinPasteboardNotify, 1,
			     AppleWMCopyToPasteboard);
}

- (BOOL) x_active {
    return _x_active;
}

@end

static NSArray *
array_with_strings_and_numbers (int nitems, const char **items,
				const char *numbers) {
  NSMutableArray *array, *subarray;
  NSString *string, *number;
  int i;
	
  /* (Can't autorelease on the X server thread) */
  
  array = [[NSMutableArray alloc] initWithCapacity:nitems];
  
  for (i = 0; i < nitems; i++) {
    subarray = [[NSMutableArray alloc] initWithCapacity:2];
    
    string = [[NSString alloc] initWithUTF8String:items[i]];
    [subarray addObject:string];
    [string release];
    
    if (numbers[i] != 0) {
      number = [[NSString alloc] initWithFormat:@"%d", numbers[i]];
      [subarray addObject:number];
      [number release];
    } else
      [subarray addObject:@""];
    
    [array addObject:subarray];
    [subarray release];
  }
  
  return array;
}

void X11ApplicationSetWindowMenu (int nitems, const char **items,
				  const char *shortcuts) {
  NSArray *array;
  array = array_with_strings_and_numbers (nitems, items, shortcuts);
  
  /* Send the array of strings over to the appkit thread */
  
  message_kit_thread (@selector (set_window_menu:), array);
  [array release];
}

void X11ApplicationSetWindowMenuCheck (int idx) {
  NSNumber *n;
  
  n = [[NSNumber alloc] initWithInt:idx];
  
  message_kit_thread (@selector (set_window_menu_check:), n);
  
  [n release];
}

void X11ApplicationSetFrontProcess (void) {
    message_kit_thread (@selector (set_front_process:), nil);
}

void X11ApplicationSetCanQuit (int state) {
    NSNumber *n;
	
    n = [[NSNumber alloc] initWithBool:state];
	
    message_kit_thread (@selector (set_can_quit:), n);
	
    [n release];
}

void X11ApplicationServerReady (void) {
    message_kit_thread (@selector (server_ready:), nil);
}

void X11ApplicationShowHideMenubar (int state) {
    NSNumber *n;
	
    n = [[NSNumber alloc] initWithBool:state];
	
    message_kit_thread (@selector (show_hide_menubar:), n);
	
    [n release];
}

static void * create_thread (void *func, void *arg) {
    pthread_attr_t attr;
    pthread_t tid;
	
    pthread_attr_init (&attr);
    pthread_attr_setscope (&attr, PTHREAD_SCOPE_SYSTEM);
    pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
    pthread_create (&tid, &attr, func, arg);
    pthread_attr_destroy (&attr);
	
    return (void *) tid;
}

static void check_xinitrc (void) {
    char *tem, buf[1024];
    NSString *msg;
	
    if ([X11App prefs_get_boolean:@PREFS_DONE_XINIT_CHECK default:NO])
		return;
	
    tem = getenv ("HOME");
    if (tem == NULL) goto done;
	
    snprintf (buf, sizeof (buf), "%s/.xinitrc", tem);
    if (access (buf, F_OK) != 0)
		goto done;
	
    /* FIXME: put localized strings into Resources/English.lproj */
	
    msg = NSLocalizedString (@"You have an existing ~/.xinitrc file.\n\n\
Windows displayed by X11 applications may not have titlebars, or may look \
different to windows displayed by native applications.\n\n\
Would you like to move aside the existing file and use the standard X11 \
environment?", @"Startup xinitrc dialog");
	
    if (NSRunAlertPanel (nil, msg, NSLocalizedString (@"Yes", @""),
			 NSLocalizedString (@"No", @""), nil)
	== NSAlertDefaultReturn) {
      char buf2[1024];
      int i = -1;
      
      snprintf (buf2, sizeof (buf2), "%s.old", buf);
      
      for (i = 1; access (buf2, F_OK) == 0; i++)
	snprintf (buf2, sizeof (buf2), "%s.old.%d", buf, i);
      
      rename (buf, buf2);
    }
    
 done:
    [X11App prefs_set_boolean:@PREFS_DONE_XINIT_CHECK value:YES];
    [X11App prefs_synchronize];
}

void X11ApplicationMain (int argc, const char *argv[],
			 void (*server_thread) (void *), void *server_arg) {
    NSAutoreleasePool *pool;
	
#ifdef DEBUG
    while (access ("/tmp/x11-block", F_OK) == 0) sleep (1);
#endif
	
    pool = [[NSAutoreleasePool alloc] init];
	
    X11App = (X11Application *) [X11Application sharedApplication];

    init_ports ();
	
    [NSApp read_defaults];
	
    [NSBundle loadNibNamed:@"main" owner:NSApp];
	
    [[NSNotificationCenter defaultCenter] addObserver:NSApp
					  selector:@selector (became_key:)
					  name:NSWindowDidBecomeKeyNotification object:nil];
	
    check_xinitrc ();
	
    /*
     * The xpr Quartz mode is statically linked into this server.
     * Initialize all the Quartz functions.
     */
    QuartzModeBundleInit();
	
    /* Calculate the height of the menubar so we can avoid it. */
    aquaMenuBarHeight = NSHeight([[NSScreen mainScreen] frame]) -
      NSMaxY([[NSScreen mainScreen] visibleFrame]) - 1;
	
    if (!create_thread (server_thread, server_arg)) {
      ErrorF("can't create secondary thread\n");
      exit(1);
    }
	
    [NSApp run];
}


/* event conversion */

static inline unsigned short
convert_flags (unsigned int nsflags) {
    unsigned int xflags = 0;
	
    if (nsflags == ~0) return 0xffff;
	
    if (nsflags & NSAlphaShiftKeyMask)	xflags |= LockMask;
    if (nsflags & NSShiftKeyMask)	xflags |= ShiftMask;
    if (nsflags & NSControlKeyMask)	xflags |= ControlMask;
    if (nsflags & NSAlternateKeyMask)	xflags |= Mod1Mask;
    if (nsflags & NSCommandKeyMask)	xflags |= Mod2Mask;
    /* FIXME: secondaryfn? */
	
    return xflags;
}


// This code should probably be merged with that in XDarwin's XServer.m - BB
static void send_nsevent (NSEventType type, NSEvent *e) {
  //    static unsigned int button_state = 0;
    NSRect screen;
    NSPoint location;
    NSWindow *window;
    int pointer_x, pointer_y, ev_button, ev_type; 
    //    int num_events=0, i=0, state;
    xEvent xe;
	
    /* convert location to global top-left coordinates */
    location = [e locationInWindow];
    window = [e window];
    screen = [[[NSScreen screens] objectAtIndex:0] frame];
		
    if (window != nil)	{
      NSRect frame = [window frame];
      pointer_x = location.x + frame.origin.x;
      pointer_y = (((screen.origin.y + screen.size.height)
		    - location.y) - frame.origin.y);
    } else {
      pointer_x = location.x;
      pointer_y = (screen.origin.y + screen.size.height) - location.y;
    }
    
    pointer_y -= aquaMenuBarHeight;
    //    state = convert_flags ([e modifierFlags]);
    
    switch (type) {
    case NSLeftMouseDown:    ev_button=1; ev_type=ButtonPress; goto handle_mouse;
    case NSOtherMouseDown:   ev_button=2; ev_type=ButtonPress; goto handle_mouse;
    case NSRightMouseDown:   ev_button=3; ev_type=ButtonPress; goto handle_mouse;
    case NSLeftMouseUp:      ev_button=1; ev_type=ButtonRelease; goto handle_mouse;
    case NSOtherMouseUp:     ev_button=2; ev_type=ButtonRelease; goto handle_mouse;
    case NSRightMouseUp:     ev_button=3; ev_type=ButtonRelease; goto handle_mouse;
    case NSLeftMouseDragged:  ev_button=1; ev_type=MotionNotify; goto handle_mouse;
    case NSOtherMouseDragged: ev_button=2; ev_type=MotionNotify; goto handle_mouse;
    case NSRightMouseDragged: ev_button=3; ev_type=MotionNotify; goto handle_mouse;
    case NSMouseMoved: ev_button=0; ev_type=MotionNotify; goto handle_mouse;
    handle_mouse:
      
      /* I'm not sure the below code is necessary or useful (-bb)
	if(ev_type==ButtonPress) {
	if (!quartzProcs->IsX11Window([e window], [e windowNumber])) {
	  fprintf(stderr, "Dropping event because it's not a window\n");
	  break;
	}
	button_state |= (1 << ev_button);
	DarwinSendPointerEvents(ev_type, ev_button, pointer_x, pointer_y);
      } else if (ev_type==ButtonRelease && (button_state & (1 << ev_button)) == 0) break;
      */
      DarwinSendPointerEvents(ev_type, ev_button, pointer_x, pointer_y);
      break;
    case NSScrollWheel: 
      DarwinSendScrollEvents([e deltaY], pointer_x, pointer_y);
      break;
      
    case NSKeyDown:  // do we need to translate these keyCodes?
    case NSKeyUp:
      DarwinSendKeyboardEvents((type == NSKeyDown)?KeyPress:KeyRelease, [e keyCode]);
      break;

    case NSFlagsChanged:
      DarwinUpdateModKeys([e modifierFlags]);
      break;
    default: break; /* for gcc */
    }	
}