/*   SDLMain.m - main entry point for our Cocoa-ized SDL app+
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       Initial Version: Darrell Walisser <dwaliss1@purdue.edu>+
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       Non-NIB-Code & other changes: Max Horn <max@quendi.de>+
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+
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    Feel free to customize this file to suit your needs+
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*/+
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+
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#import "SDL.h"+
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#import "SDLMain.h"+
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#import <sys/param.h> /* for MAXPATHLEN */+
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#import <unistd.h>+
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+
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/* Use this flag to determine whether we use SDLMain.nib or not */+
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#define		SDL_USE_NIB_FILE	0+
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+
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/* Use this flag to determine whether we use CPS (docking) or not */+
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#define		SDL_USE_CPS		1+
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#ifdef SDL_USE_CPS+
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/* Portions of CPS.h */+
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typedef struct CPSProcessSerNum+
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{+
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	UInt32		lo;+
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	UInt32		hi;+
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} CPSProcessSerNum;+
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+
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extern OSErr	CPSGetCurrentProcess( CPSProcessSerNum *psn);+
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extern OSErr 	CPSEnableForegroundOperation( CPSProcessSerNum *psn, UInt32 _arg2, UInt32 _arg3, UInt32 _arg4, UInt32 _arg5);+
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extern OSErr	CPSSetFrontProcess( CPSProcessSerNum *psn);+
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+
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#endif /* SDL_USE_CPS */+
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+
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static int    gArgc;+
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static char  **gArgv;+
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static BOOL   gFinderLaunch;+
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static BOOL   gCalledAppMainline = FALSE;+
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+
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static NSString *getApplicationName(void)+
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{+
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    NSDictionary *dict;+
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    NSString *appName = 0;+
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+
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    /* Determine the application name */+
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    dict = (NSDictionary *)CFBundleGetInfoDictionary(CFBundleGetMainBundle());+
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    if (dict)+
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        appName = [dict objectForKey: @"CFBundleName"];+
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    +
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    if (![appName length])+
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        appName = [[NSProcessInfo processInfo] processName];+
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+
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    return appName;+
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}+
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+
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#if SDL_USE_NIB_FILE+
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/* A helper category for NSString */+
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@interface NSString (ReplaceSubString)+
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- (NSString *)stringByReplacingRange:(NSRange)aRange with:(NSString *)aString;+
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@end+
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#endif+
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+
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@interface SDLApplication : NSApplication+
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@end+
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+
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@implementation SDLApplication+
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/* Invoked from the Quit menu item */+
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- (void)terminate:(id)sender+
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{+
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    /* Post a SDL_QUIT event */+
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    SDL_Event event;+
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    event.type = SDL_QUIT;+
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    SDL_PushEvent(&event);+
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}+
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@end+
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+
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/* The main class of the application, the application's delegate */+
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@implementation SDLMain+
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+
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/* Set the working directory to the .app's parent directory */+
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- (void) setupWorkingDirectory:(BOOL)shouldChdir+
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{+
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    if (shouldChdir)+
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    {+
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        char parentdir[MAXPATHLEN];+
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		CFURLRef url = CFBundleCopyBundleURL(CFBundleGetMainBundle());+
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		CFURLRef url2 = CFURLCreateCopyDeletingLastPathComponent(0, url);+
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		if (CFURLGetFileSystemRepresentation(url2, true, parentdir, MAXPATHLEN)) {+
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	        assert ( chdir (parentdir) == 0 );   /* chdir to the binary app's parent */+
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		}+
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		CFRelease(url);+
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		CFRelease(url2);+
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	}+
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+
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}+
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+
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#if SDL_USE_NIB_FILE+
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+
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/* Fix menu to contain the real app name instead of "SDL App" */+
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- (void)fixMenu:(NSMenu *)aMenu withAppName:(NSString *)appName+
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{+
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    NSRange aRange;+
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    NSEnumerator *enumerator;+
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    NSMenuItem *menuItem;+
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+
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    aRange = [[aMenu title] rangeOfString:@"SDL App"];+
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    if (aRange.length != 0)+
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        [aMenu setTitle: [[aMenu title] stringByReplacingRange:aRange with:appName]];+
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+
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    enumerator = [[aMenu itemArray] objectEnumerator];+
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    while ((menuItem = [enumerator nextObject]))+
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    {+
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        aRange = [[menuItem title] rangeOfString:@"SDL App"];+
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        if (aRange.length != 0)+
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            [menuItem setTitle: [[menuItem title] stringByReplacingRange:aRange with:appName]];+
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        if ([menuItem hasSubmenu])+
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            [self fixMenu:[menuItem submenu] withAppName:appName];+
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    }+
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    [ aMenu sizeToFit ];+
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}+
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+
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#else+
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+
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static void setApplicationMenu(void)+
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{+
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    /* warning: this code is very odd */+
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    NSMenu *appleMenu;+
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    NSMenuItem *menuItem;+
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    NSString *title;+
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    NSString *appName;+
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    +
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    appName = getApplicationName();+
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    appleMenu = [[NSMenu alloc] initWithTitle:@""];+
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    +
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    /* Add menu items */+
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    title = [@"About " stringByAppendingString:appName];+
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    [appleMenu addItemWithTitle:title action:@selector(orderFrontStandardAboutPanel:) keyEquivalent:@""];+
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+
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    [appleMenu addItem:[NSMenuItem separatorItem]];+
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+
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    title = [@"Hide " stringByAppendingString:appName];+
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    [appleMenu addItemWithTitle:title action:@selector(hide:) keyEquivalent:@"h"];+
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+
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    menuItem = (NSMenuItem *)[appleMenu addItemWithTitle:@"Hide Others" action:@selector(hideOtherApplications:) keyEquivalent:@"h"];+
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    [menuItem setKeyEquivalentModifierMask:(NSAlternateKeyMask|NSCommandKeyMask)];+
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+
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    [appleMenu addItemWithTitle:@"Show All" action:@selector(unhideAllApplications:) keyEquivalent:@""];+
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+
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    [appleMenu addItem:[NSMenuItem separatorItem]];+
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+
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    title = [@"Quit " stringByAppendingString:appName];+
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    [appleMenu addItemWithTitle:title action:@selector(terminate:) keyEquivalent:@"q"];+
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+
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    +
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    /* Put menu into the menubar */+
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    menuItem = [[NSMenuItem alloc] initWithTitle:@"" action:nil keyEquivalent:@""];+
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    [menuItem setSubmenu:appleMenu];+
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    [[NSApp mainMenu] addItem:menuItem];+
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+
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    /* Tell the application object that this is now the application menu */+
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    [NSApp setAppleMenu:appleMenu];+
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+
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    /* Finally give up our references to the objects */+
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    [appleMenu release];+
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    [menuItem release];+
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}+
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+
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/* Create a window menu */+
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static void setupWindowMenu(void)+
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{+
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    NSMenu      *windowMenu;+
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    NSMenuItem  *windowMenuItem;+
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    NSMenuItem  *menuItem;+
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+
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    windowMenu = [[NSMenu alloc] initWithTitle:@"Window"];+
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    +
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    /* "Minimize" item */+
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    menuItem = [[NSMenuItem alloc] initWithTitle:@"Minimize" action:@selector(performMiniaturize:) keyEquivalent:@"m"];+
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    [windowMenu addItem:menuItem];+
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    [menuItem release];+
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    +
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    /* Put menu into the menubar */+
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    windowMenuItem = [[NSMenuItem alloc] initWithTitle:@"Window" action:nil keyEquivalent:@""];+
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    [windowMenuItem setSubmenu:windowMenu];+
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    [[NSApp mainMenu] addItem:windowMenuItem];+
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    +
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    /* Tell the application object that this is now the window menu */+
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    [NSApp setWindowsMenu:windowMenu];+
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+
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    /* Finally give up our references to the objects */+
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    [windowMenu release];+
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    [windowMenuItem release];+
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}+
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+
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/* Replacement for NSApplicationMain */+
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static void CustomApplicationMain (int argc, char **argv)+
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{+
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    NSAutoreleasePool	*pool = [[NSAutoreleasePool alloc] init];+
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    SDLMain				*sdlMain;+
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+
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    /* Ensure the application object is initialised */+
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    [SDLApplication sharedApplication];+
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    +
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#ifdef SDL_USE_CPS+
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    {+
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        CPSProcessSerNum PSN;+
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        /* Tell the dock about us */+
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        if (!CPSGetCurrentProcess(&PSN))+
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            if (!CPSEnableForegroundOperation(&PSN,0x03,0x3C,0x2C,0x1103))+
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                if (!CPSSetFrontProcess(&PSN))+
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                    [SDLApplication sharedApplication];+
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    }+
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#endif /* SDL_USE_CPS */+
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+
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    /* Set up the menubar */+
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    [NSApp setMainMenu:[[NSMenu alloc] init]];+
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    setApplicationMenu();+
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    setupWindowMenu();+
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+
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    /* Create SDLMain and make it the app delegate */+
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    sdlMain = [[SDLMain alloc] init];+
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    [NSApp setDelegate:sdlMain];+
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    +
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    /* Start the main event loop */+
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    [NSApp run];+
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    +
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    [sdlMain release];+
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    [pool release];+
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}+
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+
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#endif+
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+
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+
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/*+
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 * Catch document open requests...this lets us notice files when the app+
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 *  was launched by double-clicking a document, or when a document was+
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 *  dragged/dropped on the app's icon. You need to have a+
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 *  CFBundleDocumentsType section in your Info.plist to get this message,+
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 *  apparently.+
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 *+
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 * Files are added to gArgv, so to the app, they'll look like command line+
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 *  arguments. Previously, apps launched from the finder had nothing but+
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 *  an argv[0].+
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 *+
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 * This message may be received multiple times to open several docs on launch.+
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 *+
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 * This message is ignored once the app's mainline has been called.+
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 */+
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- (BOOL)application:(NSApplication *)theApplication openFile:(NSString *)filename+
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{+
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    if (!gFinderLaunch)  /* MacOS is passing command line args. */+
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        return FALSE;+
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+
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    if (gCalledAppMainline)  /* app has started, ignore this document. */+
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        return FALSE;+
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+
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    const char *temparg = [filename UTF8String];+
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    char *arg = (char *) malloc(strlen(temparg) + 1);+
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    if (arg == NULL)+
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        return FALSE;+
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+
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    char **newargv = (char **) realloc(gArgv, sizeof (char *) * (gArgc + 2));+
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    if (newargv == NULL)+
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    {+
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        free(arg);+
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        return FALSE;+
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    }+
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    gArgv = newargv;+
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+
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    strcpy(arg, temparg);+
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    gArgv[gArgc++] = arg;+
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    gArgv[gArgc] = NULL;+
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    return TRUE;+
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}+
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+
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+
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/* Called when the internal event loop has just started running */+
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- (void) applicationDidFinishLaunching: (NSNotification *) note+
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{+
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    int status;+
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+
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    /* Set the working directory to the .app's parent directory */+
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    [self setupWorkingDirectory:gFinderLaunch];+
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+
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#if SDL_USE_NIB_FILE+
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    /* Set the main menu to contain the real app name instead of "SDL App" */+
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    [self fixMenu:[NSApp mainMenu] withAppName:getApplicationName()];+
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#endif+
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+
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    /* Hand off to main application code */+
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    gCalledAppMainline = TRUE;+
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    status = SDL_main (gArgc, gArgv);+
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+
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    /* We're done, thank you for playing */+
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    exit(status);+
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}+
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@end+
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+
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+
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@implementation NSString (ReplaceSubString)+
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+
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- (NSString *)stringByReplacingRange:(NSRange)aRange with:(NSString *)aString+
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{+
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    unsigned int bufferSize;+
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    unsigned int selfLen = [self length];+
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    unsigned int aStringLen = [aString length];+
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    unichar *buffer;+
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    NSRange localRange;+
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    NSString *result;+
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+
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    bufferSize = selfLen + aStringLen - aRange.length;+
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    buffer = NSAllocateMemoryPages(bufferSize*sizeof(unichar));+
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    +
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    /* Get first part into buffer */+
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    localRange.location = 0;+
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    localRange.length = aRange.location;+
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    [self getCharacters:buffer range:localRange];+
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    +
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    /* Get middle part into buffer */+
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    localRange.location = 0;+
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    localRange.length = aStringLen;+
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    [aString getCharacters:(buffer+aRange.location) range:localRange];+
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     +
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    /* Get last part into buffer */+
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    localRange.location = aRange.location + aRange.length;+
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    localRange.length = selfLen - localRange.location;+
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    [self getCharacters:(buffer+aRange.location+aStringLen) range:localRange];+
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    +
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    /* Build output string */+
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    result = [NSString stringWithCharacters:buffer length:bufferSize];+
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    +
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    NSDeallocateMemoryPages(buffer, bufferSize);+
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    +
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    return result;+
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}+
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+
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@end+
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+
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+
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+
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#ifdef main+
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#  undef main+
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#endif+
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+
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+
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/* Main entry point to executable - should *not* be SDL_main! */+
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int main (int argc, char **argv)+
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{+
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    /* Copy the arguments into a global variable */+
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    /* This is passed if we are launched by double-clicking */+
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    if ( argc >= 2 && strncmp (argv[1], "-psn", 4) == 0 ) {+
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        gArgv = (char **) malloc(sizeof (char *) * 2);+
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        gArgv[0] = argv[0];+
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        gArgv[1] = NULL;+
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        gArgc = 1;+
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        gFinderLaunch = YES;+
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    } else {+
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        int i;+
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        gArgc = argc;+
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        gArgv = (char **) malloc(sizeof (char *) * (argc+1));+
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        for (i = 0; i <= argc; i++)+
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            gArgv[i] = argv[i];+
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        gFinderLaunch = NO;+
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    }+
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+
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#if SDL_USE_NIB_FILE+
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    [SDLApplication poseAsClass:[NSApplication class]];+
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    NSApplicationMain (argc, argv);+
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#else+
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    CustomApplicationMain (argc, argv);+
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#endif+
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    return 0;+
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}+
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