view src/main/macosx/SDLMain.m @ 1551:02e19471a694

Fixed bug #4 [Note: I'm applying this patch since it's a cleaner version of what's already implemented, and supports this controller on older kernels. I'll ask to make sure this doesn't break on the new kernels where it's no longer necessary] Date: Mon, 21 Mar 2005 09:41:11 -0500 From: Chris Nelson Subject: SDL Patch Hey, Ryan. I submitted the following patch about a year ago. It's just a simple patch for the linux port, to make multiple joysticks each appear to SDL as their own device, if they are on the same USB port (specifically, these guys <http://www.consoleplus.co.uk/product_info.php?pName=super-joybox-5-quad-joypad-converter>, which allow 4 Playstation2 controllers to be accessed via a single USB port). Without this patch, SDL pretty much drops the ball, and reports that there are 4 joysticks available when less than that number are plugged in. My work built upon the work of another person with the same device. When I submitted the patch to the list, he tested it, but it didn't work for him, so the patch was never accepted. Maybe about 3 times in the past year, I've tried to email the guy, to see if he couldn't run my new version, complete with debug code to diagnose the problem he was having. He never got back to me. So, I'm attaching the patch. I wish I knew why it didn't work for him, but I've been using it for the last year with no problems. Let me know if you need any more information, or have any ideas as to how I could test it. I'd like to see it in the tree, but I want to make sure it works. -Chris
author Sam Lantinga <slouken@libsdl.org>
date Sun, 19 Mar 2006 06:31:34 +0000 (2006-03-19)
parents 304d8dd6a989
children 3a8920cc822b
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/*   SDLMain.m - main entry point for our Cocoa-ized SDL app
       Initial Version: Darrell Walisser <dwaliss1@purdue.edu>
       Non-NIB-Code & other changes: Max Horn <max@quendi.de>

    Feel free to customize this file to suit your needs
*/

#import "SDL.h"
#import "SDLMain.h"
#import <sys/param.h> /* for MAXPATHLEN */
#import <unistd.h>

/* Use this flag to determine whether we use SDLMain.nib or not */
#define		SDL_USE_NIB_FILE	0

/* Use this flag to determine whether we use CPS (docking) or not */
#define		SDL_USE_CPS		1
#ifdef SDL_USE_CPS
/* Portions of CPS.h */
typedef struct CPSProcessSerNum
{
	UInt32		lo;
	UInt32		hi;
} CPSProcessSerNum;

extern OSErr	CPSGetCurrentProcess( CPSProcessSerNum *psn);
extern OSErr 	CPSEnableForegroundOperation( CPSProcessSerNum *psn, UInt32 _arg2, UInt32 _arg3, UInt32 _arg4, UInt32 _arg5);
extern OSErr	CPSSetFrontProcess( CPSProcessSerNum *psn);

#endif /* SDL_USE_CPS */

static int    gArgc;
static char  **gArgv;
static BOOL   gFinderLaunch;
static BOOL   gCalledAppMainline = FALSE;

static NSString *getApplicationName(void)
{
    NSDictionary *dict;
    NSString *appName = 0;

    /* Determine the application name */
    dict = (NSDictionary *)CFBundleGetInfoDictionary(CFBundleGetMainBundle());
    if (dict)
        appName = [dict objectForKey: @"CFBundleName"];
    
    if (![appName length])
        appName = [[NSProcessInfo processInfo] processName];

    return appName;
}

#if SDL_USE_NIB_FILE
/* A helper category for NSString */
@interface NSString (ReplaceSubString)
- (NSString *)stringByReplacingRange:(NSRange)aRange with:(NSString *)aString;
@end
#endif

@interface SDLApplication : NSApplication
@end

@implementation SDLApplication
/* Invoked from the Quit menu item */
- (void)terminate:(id)sender
{
    /* Post a SDL_QUIT event */
    SDL_Event event;
    event.type = SDL_QUIT;
    SDL_PushEvent(&event);
}
@end

/* The main class of the application, the application's delegate */
@implementation SDLMain

/* Set the working directory to the .app's parent directory */
- (void) setupWorkingDirectory:(BOOL)shouldChdir
{
    if (shouldChdir)
    {
        char parentdir[MAXPATHLEN];
		CFURLRef url = CFBundleCopyBundleURL(CFBundleGetMainBundle());
		CFURLRef url2 = CFURLCreateCopyDeletingLastPathComponent(0, url);
		if (CFURLGetFileSystemRepresentation(url2, true, parentdir, MAXPATHLEN)) {
	        assert ( chdir (parentdir) == 0 );   /* chdir to the binary app's parent */
		}
		CFRelease(url);
		CFRelease(url2);
	}

}

#if SDL_USE_NIB_FILE

/* Fix menu to contain the real app name instead of "SDL App" */
- (void)fixMenu:(NSMenu *)aMenu withAppName:(NSString *)appName
{
    NSRange aRange;
    NSEnumerator *enumerator;
    NSMenuItem *menuItem;

    aRange = [[aMenu title] rangeOfString:@"SDL App"];
    if (aRange.length != 0)
        [aMenu setTitle: [[aMenu title] stringByReplacingRange:aRange with:appName]];

    enumerator = [[aMenu itemArray] objectEnumerator];
    while ((menuItem = [enumerator nextObject]))
    {
        aRange = [[menuItem title] rangeOfString:@"SDL App"];
        if (aRange.length != 0)
            [menuItem setTitle: [[menuItem title] stringByReplacingRange:aRange with:appName]];
        if ([menuItem hasSubmenu])
            [self fixMenu:[menuItem submenu] withAppName:appName];
    }
    [ aMenu sizeToFit ];
}

#else

static void setApplicationMenu(void)
{
    /* warning: this code is very odd */
    NSMenu *appleMenu;
    NSMenuItem *menuItem;
    NSString *title;
    NSString *appName;
    
    appName = getApplicationName();
    appleMenu = [[NSMenu alloc] initWithTitle:@""];
    
    /* Add menu items */
    title = [@"About " stringByAppendingString:appName];
    [appleMenu addItemWithTitle:title action:@selector(orderFrontStandardAboutPanel:) keyEquivalent:@""];

    [appleMenu addItem:[NSMenuItem separatorItem]];

    title = [@"Hide " stringByAppendingString:appName];
    [appleMenu addItemWithTitle:title action:@selector(hide:) keyEquivalent:@"h"];

    menuItem = (NSMenuItem *)[appleMenu addItemWithTitle:@"Hide Others" action:@selector(hideOtherApplications:) keyEquivalent:@"h"];
    [menuItem setKeyEquivalentModifierMask:(NSAlternateKeyMask|NSCommandKeyMask)];

    [appleMenu addItemWithTitle:@"Show All" action:@selector(unhideAllApplications:) keyEquivalent:@""];

    [appleMenu addItem:[NSMenuItem separatorItem]];

    title = [@"Quit " stringByAppendingString:appName];
    [appleMenu addItemWithTitle:title action:@selector(terminate:) keyEquivalent:@"q"];

    
    /* Put menu into the menubar */
    menuItem = [[NSMenuItem alloc] initWithTitle:@"" action:nil keyEquivalent:@""];
    [menuItem setSubmenu:appleMenu];
    [[NSApp mainMenu] addItem:menuItem];

    /* Tell the application object that this is now the application menu */
    [NSApp setAppleMenu:appleMenu];

    /* Finally give up our references to the objects */
    [appleMenu release];
    [menuItem release];
}

/* Create a window menu */
static void setupWindowMenu(void)
{
    NSMenu      *windowMenu;
    NSMenuItem  *windowMenuItem;
    NSMenuItem  *menuItem;

    windowMenu = [[NSMenu alloc] initWithTitle:@"Window"];
    
    /* "Minimize" item */
    menuItem = [[NSMenuItem alloc] initWithTitle:@"Minimize" action:@selector(performMiniaturize:) keyEquivalent:@"m"];
    [windowMenu addItem:menuItem];
    [menuItem release];
    
    /* Put menu into the menubar */
    windowMenuItem = [[NSMenuItem alloc] initWithTitle:@"Window" action:nil keyEquivalent:@""];
    [windowMenuItem setSubmenu:windowMenu];
    [[NSApp mainMenu] addItem:windowMenuItem];
    
    /* Tell the application object that this is now the window menu */
    [NSApp setWindowsMenu:windowMenu];

    /* Finally give up our references to the objects */
    [windowMenu release];
    [windowMenuItem release];
}

/* Replacement for NSApplicationMain */
static void CustomApplicationMain (int argc, char **argv)
{
    NSAutoreleasePool	*pool = [[NSAutoreleasePool alloc] init];
    SDLMain				*sdlMain;

    /* Ensure the application object is initialised */
    [SDLApplication sharedApplication];
    
#ifdef SDL_USE_CPS
    {
        CPSProcessSerNum PSN;
        /* Tell the dock about us */
        if (!CPSGetCurrentProcess(&PSN))
            if (!CPSEnableForegroundOperation(&PSN,0x03,0x3C,0x2C,0x1103))
                if (!CPSSetFrontProcess(&PSN))
                    [SDLApplication sharedApplication];
    }
#endif /* SDL_USE_CPS */

    /* Set up the menubar */
    [NSApp setMainMenu:[[NSMenu alloc] init]];
    setApplicationMenu();
    setupWindowMenu();

    /* Create SDLMain and make it the app delegate */
    sdlMain = [[SDLMain alloc] init];
    [NSApp setDelegate:sdlMain];
    
    /* Start the main event loop */
    [NSApp run];
    
    [sdlMain release];
    [pool release];
}

#endif


/*
 * Catch document open requests...this lets us notice files when the app
 *  was launched by double-clicking a document, or when a document was
 *  dragged/dropped on the app's icon. You need to have a
 *  CFBundleDocumentsType section in your Info.plist to get this message,
 *  apparently.
 *
 * Files are added to gArgv, so to the app, they'll look like command line
 *  arguments. Previously, apps launched from the finder had nothing but
 *  an argv[0].
 *
 * This message may be received multiple times to open several docs on launch.
 *
 * This message is ignored once the app's mainline has been called.
 */
- (BOOL)application:(NSApplication *)theApplication openFile:(NSString *)filename
{
    if (!gFinderLaunch)  /* MacOS is passing command line args. */
        return FALSE;

    if (gCalledAppMainline)  /* app has started, ignore this document. */
        return FALSE;

    const char *temparg = [filename UTF8String];
    char *arg = (char *) malloc(strlen(temparg) + 1);
    if (arg == NULL)
        return FALSE;

    char **newargv = (char **) realloc(gArgv, sizeof (char *) * (gArgc + 2));
    if (newargv == NULL)
    {
        free(arg);
        return FALSE;
    }
    gArgv = newargv;

    strcpy(arg, temparg);
    gArgv[gArgc++] = arg;
    gArgv[gArgc] = NULL;
    return TRUE;
}


/* Called when the internal event loop has just started running */
- (void) applicationDidFinishLaunching: (NSNotification *) note
{
    int status;

    /* Set the working directory to the .app's parent directory */
    [self setupWorkingDirectory:gFinderLaunch];

#if SDL_USE_NIB_FILE
    /* Set the main menu to contain the real app name instead of "SDL App" */
    [self fixMenu:[NSApp mainMenu] withAppName:getApplicationName()];
#endif

    /* Hand off to main application code */
    gCalledAppMainline = TRUE;
    status = SDL_main (gArgc, gArgv);

    /* We're done, thank you for playing */
    exit(status);
}
@end


@implementation NSString (ReplaceSubString)

- (NSString *)stringByReplacingRange:(NSRange)aRange with:(NSString *)aString
{
    unsigned int bufferSize;
    unsigned int selfLen = [self length];
    unsigned int aStringLen = [aString length];
    unichar *buffer;
    NSRange localRange;
    NSString *result;

    bufferSize = selfLen + aStringLen - aRange.length;
    buffer = NSAllocateMemoryPages(bufferSize*sizeof(unichar));
    
    /* Get first part into buffer */
    localRange.location = 0;
    localRange.length = aRange.location;
    [self getCharacters:buffer range:localRange];
    
    /* Get middle part into buffer */
    localRange.location = 0;
    localRange.length = aStringLen;
    [aString getCharacters:(buffer+aRange.location) range:localRange];
     
    /* Get last part into buffer */
    localRange.location = aRange.location + aRange.length;
    localRange.length = selfLen - localRange.location;
    [self getCharacters:(buffer+aRange.location+aStringLen) range:localRange];
    
    /* Build output string */
    result = [NSString stringWithCharacters:buffer length:bufferSize];
    
    NSDeallocateMemoryPages(buffer, bufferSize);
    
    return result;
}

@end



#ifdef main
#  undef main
#endif


/* Main entry point to executable - should *not* be SDL_main! */
int main (int argc, char **argv)
{
    /* Copy the arguments into a global variable */
    /* This is passed if we are launched by double-clicking */
    if ( argc >= 2 && strncmp (argv[1], "-psn", 4) == 0 ) {
        gArgv = (char **) malloc(sizeof (char *) * 2);
        gArgv[0] = argv[0];
        gArgv[1] = NULL;
        gArgc = 1;
        gFinderLaunch = YES;
    } else {
        int i;
        gArgc = argc;
        gArgv = (char **) malloc(sizeof (char *) * (argc+1));
        for (i = 0; i <= argc; i++)
            gArgv[i] = argv[i];
        gFinderLaunch = NO;
    }

#if SDL_USE_NIB_FILE
    [SDLApplication poseAsClass:[NSApplication class]];
    NSApplicationMain (argc, argv);
#else
    CustomApplicationMain (argc, argv);
#endif
    return 0;
}