X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Fx11%2Ffg_main_x11.c;h=8a8514e2f1d8918220319b9699adeb354780b2cc;hb=8c3eab0efb7f82a94014e0c1342c287e19461041;hp=e72db37b562e1e3447ffb91d1b67837eb875e8ef;hpb=5b3d339481bac6dbaeb599bffc1325f716585bfe;p=freeglut

diff --git a/src/x11/fg_main_x11.c b/src/x11/fg_main_x11.c
index e72db37..8a8514e 100644
--- a/src/x11/fg_main_x11.c
+++ b/src/x11/fg_main_x11.c
@@ -40,6 +40,8 @@
 #    define VFPRINTF(s,f,a)
 #endif
 
+#include "fg_main.h"
+
 /*
  * Try to get the maximum value allowed for ints, falling back to the minimum
  * guaranteed by ISO C99 if there is no suitable header.
@@ -55,6 +57,9 @@
 #    define MIN(a,b) (((a)<(b)) ? (a) : (b))
 #endif
 
+/* used in the event handling code to match and discard stale mouse motion events */
+static Bool match_motion(Display *dpy, XEvent *xev, XPointer arg);
+
 /*
  * TODO BEFORE THE STABLE RELEASE:
  *
@@ -295,7 +300,7 @@ static const char* fghColormapStateToString( int state )
     }
 }
 
-static void fghPrintEvent( XEvent *event )
+__fg_unused static void fghPrintEvent( XEvent *event )
 {
     switch( event->type ) {
 
@@ -788,6 +793,13 @@ void fgPlatformProcessSingleEvent ( void )
 
         case MotionNotify:
         {
+            /* if GLUT_SKIP_STALE_MOTION_EVENTS is true, then discard all but
+             * the last motion event from the queue
+             */
+            if(fgState.SkipStaleMotion) {
+                while(XCheckIfEvent(fgDisplay.pDisplay.Display, &event, match_motion, 0));
+            }
+
             GETWINDOW( xmotion );
             GETMOUSE( xmotion );
 
@@ -1077,6 +1089,11 @@ void fgPlatformProcessSingleEvent ( void )
 }
 
 
+static Bool match_motion(Display *dpy, XEvent *xev, XPointer arg)
+{
+    return xev->type == MotionNotify;
+}
+
 void fgPlatformMainLoopPreliminaryWork ( void )
 {
 }