src/main/beos/SDL_BeApp.cc

   1 /*
   2     SDL - Simple DirectMedia Layer
   3     Copyright (C) 1997-2009 Sam Lantinga
   4
   5     This library is free software; you can redistribute it and/or
   6     modify it under the terms of the GNU Lesser General Public
   7     License as published by the Free Software Foundation; either
   8     version 2.1 of the License, or (at your option) any later version.
   9
  10     This library is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13     Lesser General Public License for more details.
  14
  15     You should have received a copy of the GNU Lesser General Public
  16     License along with this library; if not, write to the Free Software
  17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18
  19     Sam Lantinga
  20     slouken@libsdl.org
  21 */
  22 #include "SDL_config.h"
  23
  24 /* Handle the BeApp specific portions of the application */
  25
  26 #include <AppKit.h>
  27 #include <storage/Path.h>
  28 #include <storage/Entry.h>
  29 #include <unistd.h>
  30
  31 #include "SDL_BeApp.h"
  32 #include "SDL_thread.h"
  33 #include "SDL_timer.h"
  34 #include "SDL_error.h"
  35
  36 /* Flag to tell whether or not the Be application is active or not */
  37 int SDL_BeAppActive = 0;
  38 static SDL_Thread *SDL_AppThread = NULL;
  39
  40 static int StartBeApp(void *unused)
  41 {
  42         BApplication *App;
  43
  44         App = new BApplication("application/x-SDL-executable");
  45
  46         App->Run();
  47         delete App;
  48         return(0);
  49 }
  50
  51 /* Initialize the Be Application, if it's not already started */
  52 int SDL_InitBeApp(void)
  53 {
  54         /* Create the BApplication that handles appserver interaction */
  55         if ( SDL_BeAppActive <= 0 ) {
  56                 SDL_AppThread = SDL_CreateThread(StartBeApp, NULL);
  57                 if ( SDL_AppThread == NULL ) {
  58                         SDL_SetError("Couldn't create BApplication thread");
  59                         return(-1);
  60                 }
  61
  62                 /* Change working to directory to that of executable */
  63                 app_info info;
  64                 if (B_OK == be_app->GetAppInfo(&info)) {
  65                         entry_ref ref = info.ref;
  66                         BEntry entry;
  67                         if (B_OK == entry.SetTo(&ref)) {
  68                                 BPath path;
  69                                 if (B_OK == path.SetTo(&entry)) {
  70                                         if (B_OK == path.GetParent(&path)) {
  71                                                 chdir(path.Path());
  72                                         }
  73                                 }
  74                         }
  75                 }
  76
  77                 do {
  78                         SDL_Delay(10);
  79                 } while ( (be_app == NULL) || be_app->IsLaunching() );
  80
  81                 /* Mark the application active */
  82                 SDL_BeAppActive = 0;
  83         }
  84
  85         /* Increment the application reference count */
  86         ++SDL_BeAppActive;
  87
  88         /* The app is running, and we're ready to go */
  89         return(0);
  90 }
  91
  92 /* Quit the Be Application, if there's nothing left to do */
  93 void SDL_QuitBeApp(void)
  94 {
  95         /* Decrement the application reference count */
  96         --SDL_BeAppActive;
  97
  98         /* If the reference count reached zero, clean up the app */
  99         if ( SDL_BeAppActive == 0 ) {
 100                 if ( SDL_AppThread != NULL ) {
 101                         if ( be_app != NULL ) { /* Not tested */
 102                                 be_app->PostMessage(B_QUIT_REQUESTED);
 103                         }
 104                         SDL_WaitThread(SDL_AppThread, NULL);
 105                         SDL_AppThread = NULL;
 106                 }
 107                 /* be_app should now be NULL since be_app has quit */
 108         }
 109 }