Xcode/TemplatesForXcodeTiger/SDL OpenGL Application/SDLMain.m
author Ryan C. Gordon <icculus@icculus.org>
Sun, 11 Sep 2011 14:44:37 -0400
branchSDL-1.2
changeset 5895 402eac854030
child 12048 eb70ab731d29
permissions -rw-r--r--
Unpacked Xcode.tar.gz.
     1 /*   SDLMain.m - main entry point for our Cocoa-ized SDL app
     2        Initial Version: Darrell Walisser <dwaliss1@purdue.edu>
     3        Non-NIB-Code & other changes: Max Horn <max@quendi.de>
     4 
     5     Feel free to customize this file to suit your needs
     6 */
     7 
     8 #include "SDL.h"
     9 #include "SDLMain.h"
    10 #include <sys/param.h> /* for MAXPATHLEN */
    11 #include <unistd.h>
    12 
    13 /* For some reaon, Apple removed setAppleMenu from the headers in 10.4,
    14  but the method still is there and works. To avoid warnings, we declare
    15  it ourselves here. */
    16 @interface NSApplication(SDL_Missing_Methods)
    17 - (void)setAppleMenu:(NSMenu *)menu;
    18 @end
    19 
    20 /* Use this flag to determine whether we use SDLMain.nib or not */
    21 #define		SDL_USE_NIB_FILE	0
    22 
    23 /* Use this flag to determine whether we use CPS (docking) or not */
    24 #define		SDL_USE_CPS		1
    25 #ifdef SDL_USE_CPS
    26 /* Portions of CPS.h */
    27 typedef struct CPSProcessSerNum
    28 {
    29 	UInt32		lo;
    30 	UInt32		hi;
    31 } CPSProcessSerNum;
    32 
    33 extern OSErr	CPSGetCurrentProcess( CPSProcessSerNum *psn);
    34 extern OSErr 	CPSEnableForegroundOperation( CPSProcessSerNum *psn, UInt32 _arg2, UInt32 _arg3, UInt32 _arg4, UInt32 _arg5);
    35 extern OSErr	CPSSetFrontProcess( CPSProcessSerNum *psn);
    36 
    37 #endif /* SDL_USE_CPS */
    38 
    39 static int    gArgc;
    40 static char  **gArgv;
    41 static BOOL   gFinderLaunch;
    42 static BOOL   gCalledAppMainline = FALSE;
    43 
    44 static NSString *getApplicationName(void)
    45 {
    46     const NSDictionary *dict;
    47     NSString *appName = 0;
    48 
    49     /* Determine the application name */
    50     dict = (const NSDictionary *)CFBundleGetInfoDictionary(CFBundleGetMainBundle());
    51     if (dict)
    52         appName = [dict objectForKey: @"CFBundleName"];
    53     
    54     if (![appName length])
    55         appName = [[NSProcessInfo processInfo] processName];
    56 
    57     return appName;
    58 }
    59 
    60 #if SDL_USE_NIB_FILE
    61 /* A helper category for NSString */
    62 @interface NSString (ReplaceSubString)
    63 - (NSString *)stringByReplacingRange:(NSRange)aRange with:(NSString *)aString;
    64 @end
    65 #endif
    66 
    67 @interface SDLApplication : NSApplication
    68 @end
    69 
    70 @implementation SDLApplication
    71 /* Invoked from the Quit menu item */
    72 - (void)terminate:(id)sender
    73 {
    74     /* Post a SDL_QUIT event */
    75     SDL_Event event;
    76     event.type = SDL_QUIT;
    77     SDL_PushEvent(&event);
    78 }
    79 @end
    80 
    81 /* The main class of the application, the application's delegate */
    82 @implementation SDLMain
    83 
    84 /* Set the working directory to the .app's parent directory */
    85 - (void) setupWorkingDirectory:(BOOL)shouldChdir
    86 {
    87     if (shouldChdir)
    88     {
    89         char parentdir[MAXPATHLEN];
    90         CFURLRef url = CFBundleCopyBundleURL(CFBundleGetMainBundle());
    91         CFURLRef url2 = CFURLCreateCopyDeletingLastPathComponent(0, url);
    92         if (CFURLGetFileSystemRepresentation(url2, 1, (UInt8 *)parentdir, MAXPATHLEN)) {
    93             chdir(parentdir);   /* chdir to the binary app's parent */
    94         }
    95         CFRelease(url);
    96         CFRelease(url2);
    97     }
    98 }
    99 
   100 #if SDL_USE_NIB_FILE
   101 
   102 /* Fix menu to contain the real app name instead of "SDL App" */
   103 - (void)fixMenu:(NSMenu *)aMenu withAppName:(NSString *)appName
   104 {
   105     NSRange aRange;
   106     NSEnumerator *enumerator;
   107     NSMenuItem *menuItem;
   108 
   109     aRange = [[aMenu title] rangeOfString:@"SDL App"];
   110     if (aRange.length != 0)
   111         [aMenu setTitle: [[aMenu title] stringByReplacingRange:aRange with:appName]];
   112 
   113     enumerator = [[aMenu itemArray] objectEnumerator];
   114     while ((menuItem = [enumerator nextObject]))
   115     {
   116         aRange = [[menuItem title] rangeOfString:@"SDL App"];
   117         if (aRange.length != 0)
   118             [menuItem setTitle: [[menuItem title] stringByReplacingRange:aRange with:appName]];
   119         if ([menuItem hasSubmenu])
   120             [self fixMenu:[menuItem submenu] withAppName:appName];
   121     }
   122     [ aMenu sizeToFit ];
   123 }
   124 
   125 #else
   126 
   127 static void setApplicationMenu(void)
   128 {
   129     /* warning: this code is very odd */
   130     NSMenu *appleMenu;
   131     NSMenuItem *menuItem;
   132     NSString *title;
   133     NSString *appName;
   134     
   135     appName = getApplicationName();
   136     appleMenu = [[NSMenu alloc] initWithTitle:@""];
   137     
   138     /* Add menu items */
   139     title = [@"About " stringByAppendingString:appName];
   140     [appleMenu addItemWithTitle:title action:@selector(orderFrontStandardAboutPanel:) keyEquivalent:@""];
   141 
   142     [appleMenu addItem:[NSMenuItem separatorItem]];
   143 
   144     title = [@"Hide " stringByAppendingString:appName];
   145     [appleMenu addItemWithTitle:title action:@selector(hide:) keyEquivalent:@"h"];
   146 
   147     menuItem = (NSMenuItem *)[appleMenu addItemWithTitle:@"Hide Others" action:@selector(hideOtherApplications:) keyEquivalent:@"h"];
   148     [menuItem setKeyEquivalentModifierMask:(NSAlternateKeyMask|NSCommandKeyMask)];
   149 
   150     [appleMenu addItemWithTitle:@"Show All" action:@selector(unhideAllApplications:) keyEquivalent:@""];
   151 
   152     [appleMenu addItem:[NSMenuItem separatorItem]];
   153 
   154     title = [@"Quit " stringByAppendingString:appName];
   155     [appleMenu addItemWithTitle:title action:@selector(terminate:) keyEquivalent:@"q"];
   156 
   157     
   158     /* Put menu into the menubar */
   159     menuItem = [[NSMenuItem alloc] initWithTitle:@"" action:nil keyEquivalent:@""];
   160     [menuItem setSubmenu:appleMenu];
   161     [[NSApp mainMenu] addItem:menuItem];
   162 
   163     /* Tell the application object that this is now the application menu */
   164     [NSApp setAppleMenu:appleMenu];
   165 
   166     /* Finally give up our references to the objects */
   167     [appleMenu release];
   168     [menuItem release];
   169 }
   170 
   171 /* Create a window menu */
   172 static void setupWindowMenu(void)
   173 {
   174     NSMenu      *windowMenu;
   175     NSMenuItem  *windowMenuItem;
   176     NSMenuItem  *menuItem;
   177 
   178     windowMenu = [[NSMenu alloc] initWithTitle:@"Window"];
   179     
   180     /* "Minimize" item */
   181     menuItem = [[NSMenuItem alloc] initWithTitle:@"Minimize" action:@selector(performMiniaturize:) keyEquivalent:@"m"];
   182     [windowMenu addItem:menuItem];
   183     [menuItem release];
   184     
   185     /* Put menu into the menubar */
   186     windowMenuItem = [[NSMenuItem alloc] initWithTitle:@"Window" action:nil keyEquivalent:@""];
   187     [windowMenuItem setSubmenu:windowMenu];
   188     [[NSApp mainMenu] addItem:windowMenuItem];
   189     
   190     /* Tell the application object that this is now the window menu */
   191     [NSApp setWindowsMenu:windowMenu];
   192 
   193     /* Finally give up our references to the objects */
   194     [windowMenu release];
   195     [windowMenuItem release];
   196 }
   197 
   198 /* Replacement for NSApplicationMain */
   199 static void CustomApplicationMain (int argc, char **argv)
   200 {
   201     NSAutoreleasePool	*pool = [[NSAutoreleasePool alloc] init];
   202     SDLMain				*sdlMain;
   203 
   204     /* Ensure the application object is initialised */
   205     [SDLApplication sharedApplication];
   206     
   207 #ifdef SDL_USE_CPS
   208     {
   209         CPSProcessSerNum PSN;
   210         /* Tell the dock about us */
   211         if (!CPSGetCurrentProcess(&PSN))
   212             if (!CPSEnableForegroundOperation(&PSN,0x03,0x3C,0x2C,0x1103))
   213                 if (!CPSSetFrontProcess(&PSN))
   214                     [SDLApplication sharedApplication];
   215     }
   216 #endif /* SDL_USE_CPS */
   217 
   218     /* Set up the menubar */
   219     [NSApp setMainMenu:[[NSMenu alloc] init]];
   220     setApplicationMenu();
   221     setupWindowMenu();
   222 
   223     /* Create SDLMain and make it the app delegate */
   224     sdlMain = [[SDLMain alloc] init];
   225     [NSApp setDelegate:sdlMain];
   226     
   227     /* Start the main event loop */
   228     [NSApp run];
   229     
   230     [sdlMain release];
   231     [pool release];
   232 }
   233 
   234 #endif
   235 
   236 
   237 /*
   238  * Catch document open requests...this lets us notice files when the app
   239  *  was launched by double-clicking a document, or when a document was
   240  *  dragged/dropped on the app's icon. You need to have a
   241  *  CFBundleDocumentsType section in your Info.plist to get this message,
   242  *  apparently.
   243  *
   244  * Files are added to gArgv, so to the app, they'll look like command line
   245  *  arguments. Previously, apps launched from the finder had nothing but
   246  *  an argv[0].
   247  *
   248  * This message may be received multiple times to open several docs on launch.
   249  *
   250  * This message is ignored once the app's mainline has been called.
   251  */
   252 - (BOOL)application:(NSApplication *)theApplication openFile:(NSString *)filename
   253 {
   254     const char *temparg;
   255     size_t arglen;
   256     char *arg;
   257     char **newargv;
   258 
   259     if (!gFinderLaunch)  /* MacOS is passing command line args. */
   260         return FALSE;
   261 
   262     if (gCalledAppMainline)  /* app has started, ignore this document. */
   263         return FALSE;
   264 
   265     temparg = [filename UTF8String];
   266     arglen = SDL_strlen(temparg) + 1;
   267     arg = (char *) SDL_malloc(arglen);
   268     if (arg == NULL)
   269         return FALSE;
   270 
   271     newargv = (char **) realloc(gArgv, sizeof (char *) * (gArgc + 2));
   272     if (newargv == NULL)
   273     {
   274         SDL_free(arg);
   275         return FALSE;
   276     }
   277     gArgv = newargv;
   278 
   279     SDL_strlcpy(arg, temparg, arglen);
   280     gArgv[gArgc++] = arg;
   281     gArgv[gArgc] = NULL;
   282     return TRUE;
   283 }
   284 
   285 
   286 /* Called when the internal event loop has just started running */
   287 - (void) applicationDidFinishLaunching: (NSNotification *) note
   288 {
   289     int status;
   290 
   291     /* Set the working directory to the .app's parent directory */
   292     [self setupWorkingDirectory:gFinderLaunch];
   293 
   294 #if SDL_USE_NIB_FILE
   295     /* Set the main menu to contain the real app name instead of "SDL App" */
   296     [self fixMenu:[NSApp mainMenu] withAppName:getApplicationName()];
   297 #endif
   298 
   299     /* Hand off to main application code */
   300     gCalledAppMainline = TRUE;
   301     status = SDL_main (gArgc, gArgv);
   302 
   303     /* We're done, thank you for playing */
   304     exit(status);
   305 }
   306 @end
   307 
   308 
   309 @implementation NSString (ReplaceSubString)
   310 
   311 - (NSString *)stringByReplacingRange:(NSRange)aRange with:(NSString *)aString
   312 {
   313     unsigned int bufferSize;
   314     unsigned int selfLen = [self length];
   315     unsigned int aStringLen = [aString length];
   316     unichar *buffer;
   317     NSRange localRange;
   318     NSString *result;
   319 
   320     bufferSize = selfLen + aStringLen - aRange.length;
   321     buffer = (unichar *)NSAllocateMemoryPages(bufferSize*sizeof(unichar));
   322     
   323     /* Get first part into buffer */
   324     localRange.location = 0;
   325     localRange.length = aRange.location;
   326     [self getCharacters:buffer range:localRange];
   327     
   328     /* Get middle part into buffer */
   329     localRange.location = 0;
   330     localRange.length = aStringLen;
   331     [aString getCharacters:(buffer+aRange.location) range:localRange];
   332      
   333     /* Get last part into buffer */
   334     localRange.location = aRange.location + aRange.length;
   335     localRange.length = selfLen - localRange.location;
   336     [self getCharacters:(buffer+aRange.location+aStringLen) range:localRange];
   337     
   338     /* Build output string */
   339     result = [NSString stringWithCharacters:buffer length:bufferSize];
   340     
   341     NSDeallocateMemoryPages(buffer, bufferSize);
   342     
   343     return result;
   344 }
   345 
   346 @end
   347 
   348 
   349 
   350 #ifdef main
   351 #  undef main
   352 #endif
   353 
   354 
   355 /* Main entry point to executable - should *not* be SDL_main! */
   356 int main (int argc, char **argv)
   357 {
   358     /* Copy the arguments into a global variable */
   359     /* This is passed if we are launched by double-clicking */
   360     if ( argc >= 2 && strncmp (argv[1], "-psn", 4) == 0 ) {
   361         gArgv = (char **) SDL_malloc(sizeof (char *) * 2);
   362         gArgv[0] = argv[0];
   363         gArgv[1] = NULL;
   364         gArgc = 1;
   365         gFinderLaunch = YES;
   366     } else {
   367         int i;
   368         gArgc = argc;
   369         gArgv = (char **) SDL_malloc(sizeof (char *) * (argc+1));
   370         for (i = 0; i <= argc; i++)
   371             gArgv[i] = argv[i];
   372         gFinderLaunch = NO;
   373     }
   374 
   375 #if SDL_USE_NIB_FILE
   376     [SDLApplication poseAsClass:[NSApplication class]];
   377     NSApplicationMain (argc, argv);
   378 #else
   379     CustomApplicationMain (argc, argv);
   380 #endif
   381     return 0;
   382 }
   383