Heh.

[freeglut] / src / freeglut_callbacks.c

diff --git a/src/freeglut_callbacks.c b/src/freeglut_callbacks.c
index 1cfecc5..43ccc4b 100644 (file)
--- a/src/freeglut_callbacks.c
+++ b/src/freeglut_callbacks.c
@@ -40,8 +40,10 @@
 /*
  * All of the callbacks setting methods can be generalized to this:
  */
-#define SET_CALLBACK(a) if( fgStructure.Window == NULL ) return;\
-                            fgStructure.Window->Callbacks.a = callback;
+#define SET_CALLBACK(a)              \
+    if( fgStructure.Window == NULL ) \
+        return;                      \
+    fgStructure.Window->Callbacks.a = callback;
 
 /*
  * Sets the Display callback for the current window
@@ -49,15 +51,10 @@
 void FGAPIENTRY glutDisplayFunc( void (* callback)( void ) )
 {
     if( !callback )
-       fgError ("Fatal error in program.  NULL display callback not "
-           "permitted in GLUT 3.0+ or freeglut 2.0.1+\n");
+        fgError ("Fatal error in program.  NULL display callback not "
+                 "permitted in GLUT 3.0+ or freeglut 2.0.1+\n");
     SET_CALLBACK( Display );
-
-    /*
-     * Force a redisplay with the new callback
-     */
     fgStructure.Window->State.Redisplay = TRUE;
-
 }
 
 /*
@@ -71,7 +68,8 @@ void FGAPIENTRY glutReshapeFunc( void (* callback)( int, int ) )
 /*
  * Sets the Keyboard callback for the current window
  */
-void FGAPIENTRY glutKeyboardFunc( void (* callback)( unsigned char, int, int ) )
+void FGAPIENTRY glutKeyboardFunc( void (* callback)
+                                  ( unsigned char, int, int ) )
 {
     SET_CALLBACK( Keyboard );
 }
@@ -90,44 +88,27 @@ void FGAPIENTRY glutSpecialFunc( void (* callback)( int, int, int ) )
 void FGAPIENTRY glutIdleFunc( void (* callback)( void ) )
 {
     freeglut_assert_ready;
-
-    /*
-     * The global idle callback pointer is stored in fgState structure
-     */
     fgState.IdleCallback = callback;
 }
 
 /*
  * Sets the Timer callback for the current window
  */
-void FGAPIENTRY glutTimerFunc( unsigned int timeOut, void (* callback)( int ), int timerID )
+void FGAPIENTRY glutTimerFunc( unsigned int timeOut, void (* callback)( int ),
+                               int timerID )
 {
     SFG_Timer* timer;
 
     freeglut_assert_ready;
 
-    /*
-     * Create a new freeglut timer hook structure
-     */
     timer = (SFG_Timer *)calloc( sizeof(SFG_Timer), 1 );
     if (!timer)
-       fgError ("Fatal error: "
-           "Memory allocation failure in glutTimerFunc()\n");
+      fgError ("Fatal error: "
+          "Memory allocation failure in glutTimerFunc()\n");
 
-    /*
-     * Remember the callback address and timer hook's ID
-     */
     timer->Callback  = callback;
     timer->ID        = timerID;
-
-    /*
-     * When will the time out happen (in terms of window's timer)
-     */
     timer->TriggerTime = fgElapsedTime() + timeOut;
-
-    /*
-     * Have the new hook attached to the current window
-     */
     fgListAppend( &fgState.Timers, &timer->Node );
 }
 
@@ -137,8 +118,8 @@ void FGAPIENTRY glutTimerFunc( unsigned int timeOut, void (* callback)( int ), i
 static void fghVisibility( int status )
 {
     freeglut_assert_ready;
-    freeglut_return_if_fail( fgStructure.Window != NULL );
-    freeglut_return_if_fail( fgStructure.Window->Callbacks.Visibility != NULL );
+    freeglut_return_if_fail( fgStructure.Window );
+    freeglut_return_if_fail( fgStructure.Window->Callbacks.Visibility );
 
     if( status == GLUT_HIDDEN  || status == GLUT_FULLY_COVERED )
         fgStructure.Window->Callbacks.Visibility( GLUT_NOT_VISIBLE );
@@ -159,7 +140,8 @@ void FGAPIENTRY glutVisibilityFunc( void (* callback)( int ) )
 /*
  * Sets the keyboard key release callback for the current window
  */
-void FGAPIENTRY glutKeyboardUpFunc( void (* callback)( unsigned char, int, int ) )
+void FGAPIENTRY glutKeyboardUpFunc( void (* callback)
+                                    ( unsigned char, int, int ) )
 {
     SET_CALLBACK( KeyboardUp );
 }
@@ -175,17 +157,13 @@ void FGAPIENTRY glutSpecialUpFunc( void (* callback)( int, int, int ) )
 /*
  * Sets the joystick callback and polling rate for the current window
  */
-void FGAPIENTRY glutJoystickFunc( void (* callback)( unsigned int, int, int, int ), int pollInterval )
+void FGAPIENTRY glutJoystickFunc( void (* callback)
+                                  ( unsigned int, int, int, int ),
+                                  int pollInterval )
 {
     SET_CALLBACK( Joystick );
-    /*
-     * Do not forget setting the joystick poll rate
-     */
     fgStructure.Window->State.JoystickPollRate = pollInterval;
 
-    /*
-     * Make sure the joystick polling routine gets called as early as possible:
-     */
     fgStructure.Window->State.JoystickLastPoll =
         fgElapsedTime() - fgStructure.Window->State.JoystickPollRate;
 
@@ -202,7 +180,16 @@ void FGAPIENTRY glutMouseFunc( void (* callback)( int, int, int, int ) )
 }
 
 /*
- * Sets the mouse motion callback for the current window (one or more buttons are pressed)
+ * Sets the mouse wheel callback for the current window
+ */
+void FGAPIENTRY glutMouseWheelFunc( void (* callback)( int, int, int, int ) )
+{
+    SET_CALLBACK( MouseWheel );
+}
+
+/*
+ * Sets the mouse motion callback for the current window (one or more buttons
+ * are pressed)
  */
 void FGAPIENTRY glutMotionFunc( void (* callback)( int, int ) )
 {
@@ -210,7 +197,8 @@ void FGAPIENTRY glutMotionFunc( void (* callback)( int, int ) )
 }
 
 /*
- * Sets the passive mouse motion callback for the current window (no mouse buttons are pressed)
+ * Sets the passive mouse motion callback for the current window (no mouse
+ * buttons are pressed)
  */
 void FGAPIENTRY glutPassiveMotionFunc( void (* callback)( int, int ) )
 {
@@ -252,7 +240,6 @@ void FGAPIENTRY glutMenuDestroyFunc( void (* callback)( void ) )
 void FGAPIENTRY glutMenuStateFunc( void (* callback)( int ) )
 {
     freeglut_assert_ready;
-
     fgState.MenuStateCallback = callback;
 }
 
@@ -262,7 +249,6 @@ void FGAPIENTRY glutMenuStateFunc( void (* callback)( int ) )
 void FGAPIENTRY glutMenuStatusFunc( void (* callback)( int, int, int ) )
 {
     freeglut_assert_ready;
-
     fgState.MenuStatusCallback = callback;
 }