introduce -deferptrupdate (thanks Dave)

AUTHORS

@@ -28,7 +28,7 @@ email!): Akira Hatakeyama, Karl J. Runge, Justin "Zippy" Dearing,
 Oliver Mihatsch, Greg Sternberg, Werner Hofer, Giampiero Giancipoli,
 Glenn Mabutt, Paul Kreiner, Erik Kunze, Mike Frysinger, Martin Waitz,
 Mark McLoughlin, Paul Fox, Juan Jose Costello, Andre Leiadella,
-Alberto Lusiani.
+Alberto Lusiani, Malvina Mazin, Dave Stuart.
 
 Probably I forgot quite a few people sending a patch here and there, which
 really made a difference. Without those, some obscure bugs still would

ChangeLog

+2005-12-19  Dave Stuart <dave@justdave.us>
+	* libvncserver/{main.c,rfbserver.c,cargs.c}, rfb/rfb.h: introduce
+	  deferPtrUpdateTime, which defers the handling of pointer events
+	  for a couple of milliseconds.
+
+2005-12-19  Johannes E. Schindelin  <Johannes.Schindelin@gmx.de>
+	* client_examples/SDLvncviewer.c, libvncclient/{sockets.c,vncviewer.c},
+	  libvncserver/{main.c,rfbserver.c,sockets.c}: fix MinGW32 compilation
+
 2005-12-08  "Mazin, Malvina" <Malvina.Mazin@kla-tencor.com>
 	* configure.ac, libvncserver/sockets.c: on Solaris 2.7, write may
 	  return ENOENT when it really means EAGAIN.

libvncserver/cargs.c

@@ -29,6 +29,8 @@ rfbUsage(void)
                     "                       (use plain-password as password, USE AT YOUR RISK)\n");
     fprintf(stderr, "-deferupdate time      time in ms to defer updates "
                                                              "(default 40)\n");
+    fprintf(stderr, "-deferptrupdate time   time in ms to defer pointer updates"
+                                                           " (default none)\n");
     fprintf(stderr, "-desktop name          VNC desktop name (default \"LibVNCServer\")\n");
     fprintf(stderr, "-alwaysshared          always treat new clients as shared\n");
     fprintf(stderr, "-nevershared           never treat new clients as shared\n");
@@ -104,6 +106,12 @@ rfbProcessArguments(rfbScreenInfoPtr rfbScreen,int* argc, char *argv[])
 		return FALSE;
 	    }
             rfbScreen->deferUpdateTime = atoi(argv[++i]);
+        } else if (strcmp(argv[i], "-deferptrupdate") == 0) {  /* -deferptrupdate milliseconds */
+            if (i + 1 >= *argc) {
+		rfbUsage();
+		return FALSE;
+	    }
+            rfbScreen->deferPtrUpdateTime = atoi(argv[++i]);
         } else if (strcmp(argv[i], "-desktop") == 0) {  /* -desktop desktop-name */
             if (i + 1 >= *argc) {
 		rfbUsage();

libvncserver/main.c

@@ -931,6 +931,27 @@ rfbProcessEvents(rfbScreenInfoPtr screen,long usec)
 	}
       }
     }
+
+    if (!cl->viewOnly && cl->lastPtrX >= 0) {
+      if(cl->startPtrDeferring.tv_usec == 0) {
+        gettimeofday(&cl->startPtrDeferring,NULL);
+        if(cl->startPtrDeferring.tv_usec == 0)
+          cl->startPtrDeferring.tv_usec++;
+      } else {
+        struct timeval tv;
+        gettimeofday(&tv,NULL);
+        if(tv.tv_sec < cl->startPtrDeferring.tv_sec /* at midnight */
+           || ((tv.tv_sec-cl->startPtrDeferring.tv_sec)*1000
+           +(tv.tv_usec-cl->startPtrDeferring.tv_usec)/1000)
+           > cl->screen->deferPtrUpdateTime) {
+          cl->startPtrDeferring.tv_usec = 0;
+          cl->screen->ptrAddEvent(cl->lastPtrButtons, 
+                                  cl->lastPtrX, 
+                                  cl->lastPtrY, cl);
+	  cl->lastPtrX = -1;
+        }
+      }
+    }
     clPrev=cl;
     cl=rfbClientIteratorNext(i);
     if(clPrev->sock==-1) {

libvncserver/rfbserver.c

@@ -353,6 +353,8 @@ rfbNewTCPOrUDPClient(rfbScreenInfoPtr rfbScreen,
 
       cl->extensions = NULL;
 
+      cl->lastPtrX = -1;
+
       sprintf(pv,rfbProtocolVersionFormat,rfbProtocolMajorVersion,
 	      rfbProtocolMinorVersion);
 
@@ -1071,11 +1073,19 @@ rfbProcessClientNormalMessage(rfbClientPtr cl)
 	    cl->screen->pointerClient = cl;
 
 	if(!cl->viewOnly) {
-	    cl->screen->ptrAddEvent(msg.pe.buttonMask,
-				    Swap16IfLE(msg.pe.x), Swap16IfLE(msg.pe.y), cl);
-	}
+	    if (msg.pe.buttonMask != cl->lastPtrButtons ||
+		    cl->screen->deferPtrUpdateTime == 0) {
+		cl->screen->ptrAddEvent(msg.pe.buttonMask,
+			Swap16IfLE(msg.pe.x), Swap16IfLE(msg.pe.y), cl);
+		cl->lastPtrButtons = msg.pe.buttonMask;
+	    } else {
+		cl->lastPtrX = Swap16IfLE(msg.pe.x);
+		cl->lastPtrY = Swap16IfLE(msg.pe.y);
+		cl->lastPtrButtons = msg.pe.buttonMask;
+	    }
+      }      
+      return;
 
-        return;
 
 
     case rfbClientCutText:

rfb/rfb.h

@@ -62,8 +62,10 @@ extern "C"
 #define TINI_COND(cond) (rfbLog("%s:%d TINI_COND(%s)\n",__FILE__,__LINE__,#cond), pthread_cond_destroy(&(cond)))
 #define IF_PTHREADS(x) x
 #else
+#if !NONETWORK
 #define LOCK(mutex) pthread_mutex_lock(&(mutex));
 #define UNLOCK(mutex) pthread_mutex_unlock(&(mutex));
+#endif
 #define MUTEX(mutex) pthread_mutex_t (mutex)
 #define INIT_MUTEX(mutex) pthread_mutex_init(&(mutex),NULL)
 #define TINI_MUTEX(mutex) pthread_mutex_destroy(&(mutex))
@@ -307,6 +309,7 @@ typedef struct _rfbScreenInfo
     int progressiveSliceHeight;
 
     in_addr_t listenInterface;
+    int deferPtrUpdateTime;
 } rfbScreenInfo, *rfbScreenInfoPtr;
 
 
@@ -418,6 +421,10 @@ typedef struct _rfbClientRec {
        into a single update. */
 
       struct timeval startDeferring;
+      struct timeval startPtrDeferring;
+      int lastPtrX;
+      int lastPtrY;
+      int lastPtrButtons;
 
     /* translateFn points to the translation function which is used to copy
        and translate a rectangle from the framebuffer to an output buffer. */