Don't block waiting for large clipboard transfers.

clipboard.cc

@@ -77,12 +77,11 @@ static unsigned char windows1252ToMacRoman[128] = {
 };
 
 
+static unsigned long textLen;
+
 /* Update the Scrap Manager clipboard with new data sent from server.
  */
 void DoServerCutText (void) {
-    unsigned long textLen;
-    unsigned long i;
-
     if (! DoWaitingReadTCP (3)) {   /* Read & ignore padding */
         DoClose(vncWindow);
         return;
@@ -92,9 +91,17 @@ void DoServerCutText (void) {
         return;
     }
     textLen = SwapBytes4(*(unsigned long *)readBufferPtr);
+    
+    /* Set up to wait for clipboard data.  Treat this like a 
+     * "display in progress," although it's really not. */
+    displayInProgress = TRUE;
+    GetClipboard();
+}
 
-    if (! DoWaitingReadTCP(textLen)) {
-        DoClose(vncWindow);
+void GetClipboard (void) {
+    unsigned long i;
+
+    if (! DoReadTCP(textLen)) {
         return;
     };
     if (allowClipboardTransfers) {
@@ -116,6 +123,8 @@ void DoServerCutText (void) {
         /* Potential errors (e.g. out of memory) ignored */
         DoneWithReadBuffer();
     }
+    
+    displayInProgress = FALSE;
 }
     
 void DoSendClipboard (void) {

clipboard.h

@@ -1,3 +1,5 @@
 extern void DoServerCutText (void);
+extern void GetClipboard (void);
 extern void DoSendClipboard (void);
 
+extern int waitingForClipboard;

vncdisplay.cc

@@ -316,6 +316,8 @@ void ConnectedEventLoop (void) {
                                 return;
             case encodingHextile: HexDispatch();
                                 return;
+            case nonEncodingClipboard: GetClipboard();
+                                return;
             default:            DoClose(vncWindow);
                                 return;
         }
@@ -353,7 +355,8 @@ void ConnectedEventLoop (void) {
                                         break;
             case Bell:                  SysBeep();
                                         break;
-            case ServerCutText:         DoServerCutText();
+            case ServerCutText:         rectEncoding = nonEncodingClipboard;
+                                        DoServerCutText();
                                         break;
             default:                    DisplayConnectStatus (
                                             "\pInvalid message from server.",

vncdisplay.h

@@ -18,10 +18,16 @@ extern unsigned int rectHeight;
 #define encodingRRE         2
 #define encodingCoRRE       4
 #define encodingHextile     5
+#define encodingZlib        6
+#define encodingTight       7
+#define encodingZlibhex     8
+#define encodingTRLE        15
 #define encodingZRLE        16
 #define encodingCursor      0xffffff11
 #define encodingDesktopSize 0xffffff21
 
+#define nonEncodingClipboard 3 /* should be different from any encoding */
+
 #define WIN_WIDTH_320 302
 #define WIN_WIDTH_640 613
 #define WIN_HEIGHT 174