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comparison EXAMPLES/SDLMain.m @ 4:26aec5629f68

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Added example programs.
author Eric Wing <ewing . public |-at-| gmail . com>
date Wed, 27 Oct 2010 21:41:31 -0700
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3:a929285e1db0 4:26aec5629f68
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