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 */
27typedef struct CPSProcessSerNum
28{
29	UInt32		lo;
30	UInt32		hi;
31} CPSProcessSerNum;
32
33extern OSErr	CPSGetCurrentProcess( CPSProcessSerNum *psn);
34extern OSErr 	CPSEnableForegroundOperation( CPSProcessSerNum *psn, UInt32 _arg2, UInt32 _arg3, UInt32 _arg4, UInt32 _arg5);
35extern OSErr	CPSSetFrontProcess( CPSProcessSerNum *psn);
36
37#endif /* SDL_USE_CPS */
38
39static int    gArgc;
40static char  **gArgv;
41static BOOL   gFinderLaunch;
42static BOOL   gCalledAppMainline = FALSE;
43
44static 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 NSApplication (SDLApplication)
68@end
69
70@implementation NSApplication (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}
123
124#else
125
126static void setApplicationMenu(void)
127{
128    /* warning: this code is very odd */
129    NSMenu *appleMenu;
130    NSMenuItem *menuItem;
131    NSString *title;
132    NSString *appName;
133
134    appName = getApplicationName();
135    appleMenu = [[NSMenu alloc] initWithTitle:@""];
136
137    /* Add menu items */
138    title = [@"About " stringByAppendingString:appName];
139    [appleMenu addItemWithTitle:title action:@selector(orderFrontStandardAboutPanel:) keyEquivalent:@""];
140
141    [appleMenu addItem:[NSMenuItem separatorItem]];
142
143    title = [@"Hide " stringByAppendingString:appName];
144    [appleMenu addItemWithTitle:title action:@selector(hide:) keyEquivalent:@"h"];
145
146    menuItem = (NSMenuItem *)[appleMenu addItemWithTitle:@"Hide Others" action:@selector(hideOtherApplications:) keyEquivalent:@"h"];
147    [menuItem setKeyEquivalentModifierMask:(NSAlternateKeyMask|NSCommandKeyMask)];
148
149    [appleMenu addItemWithTitle:@"Show All" action:@selector(unhideAllApplications:) keyEquivalent:@""];
150
151    [appleMenu addItem:[NSMenuItem separatorItem]];
152
153    title = [@"Quit " stringByAppendingString:appName];
154    [appleMenu addItemWithTitle:title action:@selector(terminate:) keyEquivalent:@"q"];
155
156
157    /* Put menu into the menubar */
158    menuItem = [[NSMenuItem alloc] initWithTitle:@"" action:nil keyEquivalent:@""];
159    [menuItem setSubmenu:appleMenu];
160    [[NSApp mainMenu] addItem:menuItem];
161
162    /* Tell the application object that this is now the application menu */
163    [NSApp setAppleMenu:appleMenu];
164
165    /* Finally give up our references to the objects */
166    [appleMenu release];
167    [menuItem release];
168}
169
170/* Create a window menu */
171static void setupWindowMenu(void)
172{
173    NSMenu      *windowMenu;
174    NSMenuItem  *windowMenuItem;
175    NSMenuItem  *menuItem;
176
177    windowMenu = [[NSMenu alloc] initWithTitle:@"Window"];
178
179    /* "Minimize" item */
180    menuItem = [[NSMenuItem alloc] initWithTitle:@"Minimize" action:@selector(performMiniaturize:) keyEquivalent:@"m"];
181    [windowMenu addItem:menuItem];
182    [menuItem release];
183
184    /* Put menu into the menubar */
185    windowMenuItem = [[NSMenuItem alloc] initWithTitle:@"Window" action:nil keyEquivalent:@""];
186    [windowMenuItem setSubmenu:windowMenu];
187    [[NSApp mainMenu] addItem:windowMenuItem];
188
189    /* Tell the application object that this is now the window menu */
190    [NSApp setWindowsMenu:windowMenu];
191
192    /* Finally give up our references to the objects */
193    [windowMenu release];
194    [windowMenuItem release];
195}
196
197/* Replacement for NSApplicationMain */
198static void CustomApplicationMain (int argc, char **argv)
199{
200    NSAutoreleasePool	*pool = [[NSAutoreleasePool alloc] init];
201    SDLMain				*sdlMain;
202
203    /* Ensure the application object is initialised */
204    [NSApplication sharedApplication];
205
206#ifdef SDL_USE_CPS
207    {
208        CPSProcessSerNum PSN;
209        /* Tell the dock about us */
210        if (!CPSGetCurrentProcess(&PSN))
211            if (!CPSEnableForegroundOperation(&PSN,0x03,0x3C,0x2C,0x1103))
212                if (!CPSSetFrontProcess(&PSN))
213                    [NSApplication sharedApplication];
214    }
215#endif /* SDL_USE_CPS */
216
217    /* Set up the menubar */
218    [NSApp setMainMenu:[[NSMenu alloc] init]];
219    setApplicationMenu();
220    setupWindowMenu();
221
222    /* Create SDLMain and make it the app delegate */
223    sdlMain = [[SDLMain alloc] init];
224    [NSApp setDelegate:sdlMain];
225
226    /* Start the main event loop */
227    [NSApp run];
228
229    [sdlMain release];
230    [pool release];
231}
232
233#endif
234
235
236/*
237 * Catch document open requests...this lets us notice files when the app
238 *  was launched by double-clicking a document, or when a document was
239 *  dragged/dropped on the app's icon. You need to have a
240 *  CFBundleDocumentsType section in your Info.plist to get this message,
241 *  apparently.
242 *
243 * Files are added to gArgv, so to the app, they'll look like command line
244 *  arguments. Previously, apps launched from the finder had nothing but
245 *  an argv[0].
246 *
247 * This message may be received multiple times to open several docs on launch.
248 *
249 * This message is ignored once the app's mainline has been called.
250 */
251- (BOOL)application:(NSApplication *)theApplication openFile:(NSString *)filename
252{
253    const char *temparg;
254    size_t arglen;
255    char *arg;
256    char **newargv;
257
258    if (!gFinderLaunch)  /* MacOS is passing command line args. */
259        return FALSE;
260
261    if (gCalledAppMainline)  /* app has started, ignore this document. */
262        return FALSE;
263
264    temparg = [filename UTF8String];
265    arglen = SDL_strlen(temparg) + 1;
266    arg = (char *) SDL_malloc(arglen);
267    if (arg == nullptr)
268        return FALSE;
269
270    newargv = (char **) realloc(gArgv, sizeof (char *) * (gArgc + 2));
271    if (newargv == nullptr)
272    {
273        SDL_free(arg);
274        return FALSE;
275    }
276    gArgv = newargv;
277
278    SDL_strlcpy(arg, temparg, arglen);
279    gArgv[gArgc++] = arg;
280    gArgv[gArgc] = nullptr;
281    return TRUE;
282}
283
284
285/* Called when the internal event loop has just started running */
286- (void) applicationDidFinishLaunching: (NSNotification *) note
287{
288    int status;
289
290    /* Set the working directory to the .app's parent directory */
291    [self setupWorkingDirectory:gFinderLaunch];
292
293#if SDL_USE_NIB_FILE
294    /* Set the main menu to contain the real app name instead of "SDL App" */
295    [self fixMenu:[NSApp mainMenu] withAppName:getApplicationName()];
296#endif
297
298    /* Hand off to main application code */
299    gCalledAppMainline = TRUE;
300    status = SDL_main (gArgc, gArgv);
301
302    /* We're done, thank you for playing */
303    exit(status);
304}
305@end
306
307
308@implementation NSString (ReplaceSubString)
309
310- (NSString *)stringByReplacingRange:(NSRange)aRange with:(NSString *)aString
311{
312    unsigned int bufferSize;
313    unsigned int selfLen = [self length];
314    unsigned int aStringLen = [aString length];
315    unichar *buffer;
316    NSRange localRange;
317    NSString *result;
318
319    bufferSize = selfLen + aStringLen - aRange.length;
320    buffer = (unichar *)NSAllocateMemoryPages(bufferSize*sizeof(unichar));
321
322    /* Get first part into buffer */
323    localRange.location = 0;
324    localRange.length = aRange.location;
325    [self getCharacters:buffer range:localRange];
326
327    /* Get middle part into buffer */
328    localRange.location = 0;
329    localRange.length = aStringLen;
330    [aString getCharacters:(buffer+aRange.location) range:localRange];
331
332    /* Get last part into buffer */
333    localRange.location = aRange.location + aRange.length;
334    localRange.length = selfLen - localRange.location;
335    [self getCharacters:(buffer+aRange.location+aStringLen) range:localRange];
336
337    /* Build output string */
338    result = [NSString stringWithCharacters:buffer length:bufferSize];
339
340    NSDeallocateMemoryPages(buffer, bufferSize);
341
342    return result;
343}
344
345@end
346
347
348
349#ifdef main
350#  undef main
351#endif
352
353
354/* Main entry point to executable - should *not* be SDL_main! */
355int main (int argc, char **argv)
356{
357    /* Copy the arguments into a global variable */
358    /* This is passed if we are launched by double-clicking */
359    if ( argc >= 2 && strncmp (argv[1], "-psn", 4) == 0 ) {
360        gArgv = (char **) SDL_malloc(sizeof (char *) * 2);
361        gArgv[0] = argv[0];
362        gArgv[1] = nullptr;
363        gArgc = 1;
364        gFinderLaunch = YES;
365    } else {
366        int i;
367        gArgc = argc;
368        gArgv = (char **) SDL_malloc(sizeof (char *) * (argc+1));
369        for (i = 0; i <= argc; i++)
370            gArgv[i] = argv[i];
371        gFinderLaunch = NO;
372    }
373
374#if SDL_USE_NIB_FILE
375    NSApplicationMain (argc, argv);
376#else
377    CustomApplicationMain (argc, argv);
378#endif
379    return 0;
380}
381