Joe Krahn\'s input (dials) device implementation.

git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@636 7f0cb862-5218-0410-a997-914c9d46530a

freeglut/freeglut/src/Makefile.am

@@ -27,6 +27,7 @@ lib@LIBRARY@_la_SOURCES = freeglut_callbacks.c \
 			 freeglut_gamemode.c \
 			 freeglut_geometry.c \
 			 freeglut_init.c \
+			 freeglut_input_devices.c \
 			 freeglut_joystick.c \
 			 freeglut_main.c \
 			 freeglut_menu.c \

freeglut/freeglut/src/freeglut_init.c

@@ -82,7 +82,8 @@ SFG_State fgState = { { -1, -1, GL_FALSE },  /* Position */
                       GLUT_ACTION_EXIT,       /* ActionOnWindowClose */
                       GLUT_EXEC_STATE_INIT,   /* ExecState */
                       NULL,                   /* ProgramName */
-                      GL_FALSE                /* JoysticksInitialised */
+                      GL_FALSE,               /* JoysticksInitialised */
+                      GL_FALSE                /* InputDevsInitialised */
 };
 
 
@@ -202,6 +203,9 @@ static void fghInitialize( const char* displayName )
 #endif
 
     fgState.Initialised = GL_TRUE;
+
+    /* InputDevice uses GlutTimerFunc(), so fgState.Initialised must be TRUE */
+    fgInitialiseInputDevices();
 }
 
 /*
@@ -242,8 +246,12 @@ void fgDeinitialize( void )
 #if !TARGET_HOST_WINCE
     if ( fgState.JoysticksInitialised )
         fgJoystickClose( );
+
+    if ( fgState.InputDevsInitialised )
+        fgInputDeviceClose( );
 #endif /* !TARGET_HOST_WINCE */
     fgState.JoysticksInitialised = GL_FALSE;
+    fgState.InputDevsInitialised = GL_FALSE;
 
     fgState.Initialised = GL_FALSE;
 

freeglut/freeglut/src/freeglut_internal.h

@@ -244,6 +244,7 @@ struct tagSFG_State
     fgExecutionState ExecState;           /* Used for GLUT termination       */
     char            *ProgramName;         /* Name of the invoking program    */
     GLboolean        JoysticksInitialised;  /* Only initialize if application calls for them */
+    GLboolean        InputDevsInitialised;  /* Only initialize if application calls for them */
 };
 
 /* The structure used by display initialization in freeglut_init.c */
@@ -772,6 +773,11 @@ int  glutJoystickGetNumAxes( int ident );
 int  glutJoystickGetNumButtons( int ident );
 int  glutJoystickNotWorking( int ident );
 
+/* InputDevice Init/Fini */
+int         fgInputDeviceDetect( void );
+void        fgInitialiseInputDevices( void );
+void        fgInputDeviceClose( void );
+
 /* Setting the cursor for a given window */
 void fgSetCursor ( SFG_Window *window, int cursorID );
 

freeglut/freeglut/src/freeglut_joystick.c

@@ -1581,15 +1581,14 @@ static void fghJoystickInit( int ident )
  */
 void fgInitialiseJoysticks ( void )
 {
-  /* Initialization courtesy of OpenGLUT -- do we want it? */
-  if( !fgState.JoysticksInitialised )
-  {
-    int ident ;
-    for ( ident = 0; ident < MAX_NUM_JOYSTICKS; ident++ )
-      fghJoystickInit( ident );
+    if( !fgState.JoysticksInitialised )
+    {
+        int ident ;
+        for ( ident = 0; ident < MAX_NUM_JOYSTICKS; ident++ )
+            fghJoystickInit( ident );
 
-    fgState.JoysticksInitialised = GL_TRUE;
-  }
+        fgState.JoysticksInitialised = GL_TRUE;
+    }
 }
 
 /*
@@ -1680,21 +1679,21 @@ void fgJoystickPollWindow( SFG_Window* window )
  */
 int fgJoystickDetect( void )
 {
-  int ident;
+    int ident;
 
-  fgInitialiseJoysticks ();
+    fgInitialiseJoysticks ();
+
+    if ( !fgJoystick )
+        return 0;
+
+    if ( !fgState.JoysticksInitialised )
+        return 0;
+
+    for( ident=0; ident<MAX_NUM_JOYSTICKS; ident++ )
+        if( fgJoystick[ident] && !fgJoystick[ident]->error )
+            return 1;
 
-  if ( !fgJoystick )
     return 0;
-
-  if ( !fgState.JoysticksInitialised )
-    return 0;
-
-  for( ident=0; ident<MAX_NUM_JOYSTICKS; ident++ )
-    if( fgJoystick[ident] && !fgJoystick[ident]->error )
-      return 1;
-
-  return 0;
 }
 
 /*

freeglut/freeglut/src/freeglut_state.c

@@ -540,14 +540,21 @@ int FGAPIENTRY glutDeviceGet( GLenum eWhat )
     case GLUT_JOYSTICK_AXES:
         return glutJoystickGetNumAxes ( 0 );
 
-    case GLUT_HAS_SPACEBALL:
     case GLUT_HAS_DIAL_AND_BUTTON_BOX:
+        return fgInputDeviceDetect ();
+
+    case GLUT_NUM_DIALS:
+        if ( fgState.InputDevsInitialised ) return 8;
+        return 0;
+ 
+    case GLUT_NUM_BUTTON_BOX_BUTTONS:
+        return 0;
+
+    case GLUT_HAS_SPACEBALL:
     case GLUT_HAS_TABLET:
         return FALSE;
 
     case GLUT_NUM_SPACEBALL_BUTTONS:
-    case GLUT_NUM_BUTTON_BOX_BUTTONS:
-    case GLUT_NUM_DIALS:
     case GLUT_NUM_TABLET_BUTTONS:
         return 0;