Fix key handling bug 1268

1 files changed, 24 insertions, 35 deletions

diff --git a/noncore/comm/keypebble/krfbdecoder.cpp b/noncore/comm/keypebble/krfbdecoder.cpp
index 2c9ad71..db95154 100644
--- a/noncore/comm/keypebble/krfbdecoder.cpp
+++ b/noncore/comm/keypebble/krfbdecoder.cpp
@@ -289,553 +289,542 @@ void KRFBDecoder::decidePixelFormat()
       format->trueColor = true;
       format->redMax = 7;
       format->greenMax = 7;
       format->blueMax = 3;
       format->redShift = 0;
       format->greenShift = 3;
       format->blueShift = 6;
     }
   }
 
   format->redMax = Swap16IfLE( format->redMax );
   format->greenMax = Swap16IfLE( format->greenMax );
   format->blueMax = Swap16IfLE( format->blueMax );
 }
 
 void KRFBDecoder::sendPixelFormat()
 {
   static char padding[3];
   con->write( &SetPixelFormatId, 1 );
   con->write( padding, 3 );
 
   con->write( &(format->bpp), 1 );
   con->write( &(format->depth), 1 );
   con->write( &(format->bigEndian), 1 );
   con->write( &(format->trueColor), 1 );
 
   con->write( &(format->redMax), 2 );
   con->write( &(format->greenMax), 2 );
   con->write( &(format->blueMax), 2 );
 
   con->write( &(format->redShift), 1 );
   con->write( &(format->greenShift), 1 );
   con->write( &(format->blueShift), 1 );
   con->write( format->padding, 3 ); // Padding
 }
 
 void KRFBDecoder::sendAllowedEncodings()
 {
   static CARD8 padding[1];
   con->write( &SetEncodingsId, 1 );
   con->write( padding, 1 );
 
   CARD16 noEncodings = con->options()->encodings();
   noEncodings = Swap16IfLE( noEncodings );
   con->write( &noEncodings, 2 );
 
   if ( con->options()->corre )
     con->write( &CorreEncoding, 4 );
   if ( con->options()->hexTile )
     con->write( &HexTileEncoding, 4 );
   if ( con->options()->rre )
     con->write( &RreEncoding, 4 );
   if ( con->options()->copyrect )
     con->write( &CopyRectEncoding, 4 );
   // We always support this
   con->write( &RawEncoding, 4 );
 }
 
 void KRFBDecoder::sendUpdateRequest( bool incremental )
 {
   if ( currentState != Idle )
     return;
 
   con->write( &UpdateRequestId, 1 );
   con->write( &incremental, 1 );
 
   static CARD16 x = 0, y = 0;
   static CARD16 w = Swap16IfLE( info->width );
   static CARD16 h = Swap16IfLE( info->height );
 
   con->write( &x, 2 );
   con->write( &y, 2 );
   con->write( &w, 2 );
   con->write( &h, 2 );
 
   // Now wait for the update
   currentState = AwaitingUpdate;
   connect( con, SIGNAL( gotEnoughData() ), SLOT( gotUpdateHeader() ) );
   con->waitForData( UpdateHeaderLength );
 }
 
 void KRFBDecoder::gotUpdateHeader()
 {
   assert( currentState == AwaitingUpdate );
 
   //  qWarning( "Got update header" );
 
   disconnect( con, SIGNAL( gotEnoughData() ), 
 	      this, SLOT( gotUpdateHeader() ) );
 
   CARD8 msgType;
   con->read( &msgType, 1 );
 
   if ( msgType != UpdateId ) {
     // We might have a bell or server cut
     if ( msgType == ServerCutId ) {
       oldState = currentState;
       gotServerCut();
     }
     else if ( msgType == BellId ) {
       oldState = currentState;
       gotBell();
     }
     else {
       int msg = msgType;
       QString protocolError = tr( "Protocol Error: Message Id %1 was "
                                     "found when expecting an update "
                                     "message." ).arg( msg );
       currentState = Error;
       emit error( protocolError );
     }
     return;    
   }
 
   CARD8 padding;
   con->read( &padding, 1 );
 
   con->read( &noRects, 2 );
   noRects = Swap16IfLE( noRects );
 
   //  qWarning( "Expecting %d rects", noRects );
 
   // Now wait for the data
   currentState = AwaitingRectHeader;
   connect( con, SIGNAL( gotEnoughData() ), SLOT( gotRectHeader() ) );
   con->waitForData( RectHeaderLength );
 }
 
 void KRFBDecoder::gotRectHeader()
 {
   assert( currentState == AwaitingRectHeader );
 
   //  qWarning( "Got rect header" );
 
   disconnect( con, SIGNAL( gotEnoughData() ), 
 	      this, SLOT( gotRectHeader() ) );
 
   con->read( &x, 2 );
   x = Swap16IfLE( x );
   con->read( &y, 2 );
   y = Swap16IfLE( y );
 
   con->read( &w, 2 );
   w = Swap16IfLE( w );
   con->read( &h, 2 );
   h = Swap16IfLE( h );
 
   con->read( &encoding, 4 );
 
   //  CARD32 encodingLocal = Swap32IfLE( encoding );
   //  qWarning( "Rect: x=%d, y= %d, w=%d, h=%d, encoding=%ld", 
   //	   x, y, w, h, encodingLocal );
 
   //
   // Each encoding needs to be handled differently. Some require
   // waiting for more data, but others like a copyrect do not.
   // Our constants have already been byte swapped, so we use
   // the remote value as is.
   //
   if ( encoding == RawEncoding ) {
       //    qWarning( "Raw encoding" );
     handleRawRect();
   }
   else if ( encoding == CopyRectEncoding ) {
 //    qWarning( "CopyRect encoding" );
     handleCopyRect();
   }
   else if ( encoding == RreEncoding ) {
     qWarning( "RRE encoding" );
     handleRRERect();
   }
   else if ( encoding == CorreEncoding ) {
     qWarning( "CoRRE encoding" );
     handleCoRRERect();
   }
   else if ( encoding == HexTileEncoding ) {
     qWarning( "HexTile encoding" );
     handleHexTileRect();
   }
   else {
     int msg = Swap32IfLE( encoding );
     QString protocolError = tr( "Protocol Error: An unknown encoding was "
 				  "used by the server %1" ).arg( msg );
     currentState = Error;
     qWarning( "Unknown encoding, %d", msg );
     emit error( protocolError );
     return;
   }
 }
 
 //
 // Raw Encoding
 //
 
 void KRFBDecoder::handleRawRect()
 {
   // We need something a bit cleverer here to handle large
   // rectanges nicely. The chunking should be based on the
   // overall size (but has to be in complete lines).
 
     //  qWarning( "Handling a raw rect chunk" );
 
     //  CARD32 lineCount = w * format->bpp / 8;
 
   if ( h > RectChunkSize ) {
     //    if ( con->sock->size() / lineCount ) {
     //      getRawRectChunk( con->sock->size() / lineCount );
     //    }
     //    else {
       getRawRectChunk( RectChunkSize );
       //   }
   }
   else {
     getRawRectChunk( h );
   }
 }
 
 void KRFBDecoder::getRawRectChunk( int lines )
 {
   this->lines = lines;
   CARD32 count = lines * w * format->bpp / 8;
 
   // Wait for server init
   //  qWarning( "Waiting for raw rect chunk, %ld", count );
 
   currentState = AwaitingRawRectChunk;
   connect( con, SIGNAL( gotEnoughData() ), SLOT( gotRawRectChunk() ) );
   con->waitForData( count );
 }
 
 void KRFBDecoder::gotRawRectChunk()
 {
   assert( currentState == AwaitingRawRectChunk );
 
   disconnect( con, SIGNAL( gotEnoughData() ), 
               this, SLOT( gotRawRectChunk() ) );
 
   //  qWarning( "Got raw rect chunk" );
 
   //
   // Read the rect data and copy it to the buffer.
   //
   
   // TODO: Replace this!
   int count = lines * w * format->bpp / 8;
   char *hack = new char[ count ];
   con->read( hack, count );
   buf->drawRawRectChunk( hack, x, y, w, lines );
   delete hack;
   // /TODO:
 
   h = h - lines;
   y = y + lines;
 
   if ( h > 0 ) {
     handleRawRect();
   }
   else {
     noRects--;
 
     //    qWarning( "There are %d rects left", noRects );
 
     if ( noRects ) {
       currentState = AwaitingRectHeader;
       connect( con, SIGNAL( gotEnoughData() ), SLOT( gotRectHeader() ) );
       con->waitForData( RectHeaderLength );
     }
     else {
       // we are now ready for the next update - no need to wait for the timer
       currentState = Idle;
       sendUpdateRequest (1);
     }
   }
 }
 
 //
 // Copy Rectangle Encoding
 //
 
 void KRFBDecoder::handleCopyRect()
 {
   currentState = AwaitingCopyRectPos;
   connect( con, SIGNAL( gotEnoughData() ), SLOT( gotCopyRectPos() ) );
   con->waitForData( CopyRectPosLength );
 }
 
 void KRFBDecoder::gotCopyRectPos()
 {
   disconnect( con, SIGNAL( gotEnoughData() ),
               this, SLOT( gotCopyRectPos() ) );
 
   CARD16 srcX;
   CARD16 srcY;
 
   con->read( &srcX, 2 );
   con->read( &srcY, 2 );
 
   srcX = Swap16IfLE( srcX );
   srcY = Swap16IfLE( srcY );
 
   buf->copyRect( srcX, srcY, x, y, w, h );
 
   noRects--;
 
   //    qWarning( "There are %d rects left", noRects );
 
   if ( noRects ) {
     currentState = AwaitingRectHeader;
     connect( con, SIGNAL( gotEnoughData() ), SLOT( gotRectHeader() ) );
     con->waitForData( RectHeaderLength );
   }
   else
     currentState = Idle;
 }
 
 void KRFBDecoder::handleRRERect()
 {
   qWarning( "RRE not implemented" );
 }
 
 void KRFBDecoder::handleCoRRERect()
 {
   qWarning( "CoRRE not implemented" );
 }
 
 void KRFBDecoder::handleHexTileRect()
 {
   qWarning( "HexTile not implemented" );
 }
 
 void KRFBDecoder::sendMouseEvent( QMouseEvent *e )
 {
   // Deal with the buttons
   if ( e->type() != QEvent::MouseMove ) {
     buttonMask = 0;
     if ( e->type() == QEvent::MouseButtonPress ) {
       if ( e->button() & LeftButton )
         buttonMask |= 0x01;
       if ( e->button() & MidButton )
         buttonMask |= 0x04;
       if ( e->button() & RightButton )
         buttonMask |= 0x02;
     }
     else if ( e->type() == QEvent::MouseButtonRelease ) {
       if ( e->button() & LeftButton )
         buttonMask &= 0x06;
       if ( e->button() & MidButton )
         buttonMask |= 0x03;
       if ( e->button() & RightButton )
         buttonMask |= 0x05;
     }
   }
 
 	// HACK: Scaling
   CARD16 x = Swap16IfLE( e->x() * con->options()->scaleFactor );
   CARD16 y = Swap16IfLE( e->y() *	con->options()->scaleFactor );
 
   con->write( &PointerEventId, 1 );
   con->write( &buttonMask, 1 );
   con->write( &x, 2 );
   con->write( &y, 2 );
 }
 
 
 void KRFBDecoder::sendCutEvent( const QString &unicode )
 {
   //
   // Warning: There is a bug in the RFB protocol because there is no way to find
   // out the codepage in use on the remote machine. This could be fixed by requiring
   // the remote server to use utf8 etc. but for now we have to assume they're the
   // same. I've reported this problem to the ORL guys, but they apparantly have no
   // immediate plans to fix the issue. :-( (rich)
   //
 
   CARD8 padding[3];
   QCString text = unicode.local8Bit();
   CARD32 length = text.length();
   length = Swap32IfLE( length );
 
   con->write( &ClientCutTextId, 1 );
   con->write( &padding, 3 );
   con->write( &length, 4 );
   con->write( text.data(), length );
 }
 
 void KRFBDecoder::gotServerCut()
 {
   qWarning( "Got server cut" );
 
   currentState = AwaitingServerCutLength;
   connect( con, SIGNAL( gotEnoughData() ), SLOT( gotServerCutLength() ) );
   con->waitForData( ServerCutLenLength );
 }
 
 void KRFBDecoder::gotServerCutLength()
 {
   assert( currentState = AwaitingServerCutLength );
   disconnect( con, SIGNAL( gotEnoughData() ),
               this, SLOT( gotServerCutLength() ) );
 
   CARD8 padding[3];
   con->read( padding, 3 );
 
   con->read( &serverCutTextLen, 4 );
   serverCutTextLen = Swap32IfLE( serverCutTextLen );
 
   currentState = AwaitingServerCutText;
   connect( con, SIGNAL( gotEnoughData() ), SLOT( gotServerCutText() ) );
   con->waitForData( serverCutTextLen );
 }
 
 void KRFBDecoder::gotServerCutText()
 {
   assert( currentState = AwaitingServerCutText );
 
   disconnect( con, SIGNAL( gotEnoughData() ),
               this, SLOT( gotServerCutText() ) );
 
 
   //
   // Warning: There is a bug in the RFB protocol because there is no way to find
   // out the codepage in use on the remote machine. This could be fixed by requiring
   // the remote server to use utf8 etc. but for now we have to assume they're the
   // same. I've reported this problem to the ORL guys, but they apparantly have no
   // immediate plans to fix the issue. :-( (rich)
   //
 
   char *cutbuf = new char[ serverCutTextLen + 1 ];
   CHECK_PTR( cutbuf );
 
   con->read( cutbuf, serverCutTextLen );
   cutbuf[ serverCutTextLen ] = '\0';
 
   /* For some reason QApplication::clipboard()->setText() segfaults when called
    * from within keypebble's mass of signals and slots 
   qWarning( "Server cut: %s", cutbuf );
 
   QString cutText( cutbuf ); // DANGER!!
   qApp->clipboard()->setText( cutText );
   */
 
   delete cutbuf;
   // Now wait for the update (again)
   if ( oldState == AwaitingUpdate ) {
     currentState = AwaitingUpdate;
     connect( con, SIGNAL( gotEnoughData() ), SLOT( gotUpdateHeader() ) );
     con->waitForData( UpdateHeaderLength );
   }
   else if ( oldState == Idle ) {
     currentState = Idle;
   }
   else {
     qWarning( "Async handled in weird state" );
     currentState = oldState;
   };
 }
 
 void KRFBDecoder::gotBell()
 {
   qWarning( "Got server bell" );
   buf->soundBell();
 
   // Now wait for the update (again)
   if ( oldState == AwaitingUpdate ) {
     currentState = AwaitingUpdate;
     connect( con, SIGNAL( gotEnoughData() ), SLOT( gotUpdateHeader() ) );
     con->waitForData( UpdateHeaderLength );
   }
   else if ( oldState == Idle ) {
     currentState = Idle;
   }
   else {
     qWarning( "Async handled in weird state" );
     currentState = oldState;
   };
 }
 
 void KRFBDecoder::sendKeyPressEvent( QKeyEvent *event )
 {
   int key;
   key = toKeySym( event );
   if ( key ) {
     key = Swap32IfLE( key );
 
     CARD8 mask = true;
 
     CARD16 padding = 0;
     con->write( &KeyEventId, 1 );
     con->write( &mask, 1 );
     con->write( &padding, 2 );
     con->write( &key, 4 );
   }
 }
 
 void KRFBDecoder::sendKeyReleaseEvent( QKeyEvent *event )
 {
   int key;
   key = toKeySym( event );
   if ( key ) {
     key = Swap32IfLE( key );
 
     CARD8 mask = false;
 
     CARD16 padding = 0;
     con->write( &KeyEventId, 1 );
     con->write( &mask, 1 );
     con->write( &padding, 2 );
     con->write( &key, 4 );
   }
 }
 
 
+
+
+//
+// The RFB protocol spec says 'For most ordinary keys, the 'keysym'
+// is the same as the corresponding ASCII value.', but doesn't
+// elaborate what the most ordinary keys are.  The spec also lists
+// a set (possibly subset, it's unspecified) of mappings for
+// "other common keys" (backspace, tab, return, escape, etc).
+//
 int KRFBDecoder::toKeySym( QKeyEvent *k )
 {
-  int ke = 0;
-
-  ke = k->ascii();
-  // Markus: Crappy hack. I dont know why lower case letters are
-  // not defined in qkeydefs.h. The key() for e.g. 'l' == 'L'. 
-  // This sucks. :-(
-
-  if ( (ke == 'a') || (ke == 'b') || (ke == 'c') || (ke == 'd') 
-       || (ke == 'e') || (ke == 'f') || (ke == 'g') || (ke == 'h')
-       || (ke == 'i') || (ke == 'j') || (ke == 'k') || (ke == 'l')
-       || (ke == 'm') || (ke == 'n') || (ke == 'o') || (ke == 'p')
-       || (ke == 'q') || (ke == 'r') || (ke == 's') || (ke == 't')
-       || (ke == 'u') || (ke == 'v') ||( ke == 'w') || (ke == 'x')
-       || (ke == 'y') || (ke == 'z') ) {
-    ke = k->key();
-    ke = ke + 0x20;
-    return ke;
-  }
-
-  // qkeydefs = xkeydefs! :-)
-  if ( ( k->key() >= 0x0a0 ) && k->key() <= 0x0ff )
-      return k->key();
-
-  if ( ( k->key() >= 0x20 ) && ( k->key() <= 0x7e ) )
-    return k->key();
-  
-  // qkeydefs != xkeydefs! :-(
-  // This is gonna suck :-(
-
-  int i = 0;
-  while ( keyMap[i].keycode ) {
-    if ( k->key() == keyMap[i].keycode )
+
+    //
+    // Try and map these "other common keys" first.
+    //
+    if ((k->key() >= Qt::Key_Escape) && (k->key() <= Qt::Key_F12)) {
+	for(int i = 0; keyMap[i].keycode != 0; i++) {
+	    if (k->key() == keyMap[i].keycode) {
 	return keyMap[i].keysym;
-    i++;
   }
-
-  return 0;
+	}
 }
 
+    //
+    // If these keys aren't matched, return the ascii code and let the
+    // server figure it out.  We don't return k->key(), as the data in
+    // key differs between input methods, and we don't want special cases.
+    //
+    return k->ascii();
+}