Clipboard support for SDLvncviewer

The clipboard support has only been tested on Linux so far.
Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

ChangeLog

+2009-03-08  Johannes E. Schindelin  <Johannes.Schindelin@gmx.de>
+	* client_examples/SDLvncviewer.c: support clipboard operations
+
 2009-03-07  Johannes E. Schindelin  <Johannes.Schindelin@gmx.de>
 	* client_examples/SDLvncviewer.c: force releasing Alt keys whenr
 	  losing focus.  This helps when you switch windows by pressing

client_examples/Makefile.am

@@ -19,8 +19,14 @@ SDLVIEWER=SDLvncviewer
 
 SDLvncviewer_CFLAGS=$(SDL_CFLAGS)
 
+SDLvncviewer_SOURCES=SDLvncviewer.c scrap.c
+
+if HAVE_X
+X11_LIB=-lX11
+endif
+
 # thanks to autoconf, this looks ugly
-SDLvncviewer_LDADD=$(LDADD) $(SDL_LIBS)
+SDLvncviewer_LDADD=$(LDADD) $(SDL_LIBS) $(X11_LIB)
 endif
 
 noinst_PROGRAMS=ppmtest $(SDLVIEWER) $(FFMPEG_CLIENT) backchannel

client_examples/SDLvncviewer.c

 #include <SDL.h>
 #include <rfb/rfbclient.h>
+#include "scrap.h"
 
 struct { int sdl; int rfb; } buttonMapping[]={
 	{1, rfbButton1Mask},
@@ -397,6 +398,17 @@ static void handleSDLEvent(rfbClient *cl, SDL_Event *e)
 			leftAltKeyDown = FALSE;
 			rfbClientLog("released left Alt key\n");
 		}
+
+		if (e->active.gain && lost_scrap()) {
+			static char *data = NULL;
+			static int len = 0;
+			get_scrap(T('T', 'E', 'X', 'T'), &len, &data);
+			if (len)
+				SendClientCutText(cl, data, len);
+		}
+		break;
+	case SDL_SYSWMEVENT:
+		clipboard_filter(&e);
 		break;
 	case SDL_VIDEORESIZE:
 		setRealDimension(cl, e->resize.w, e->resize.h);
@@ -406,6 +418,11 @@ static void handleSDLEvent(rfbClient *cl, SDL_Event *e)
 	}
 }
 
+static void got_selection(rfbClient *cl, const char *text, int len)
+{
+	put_scrap(T('T', 'E', 'X', 'T'), len, text);
+}
+
 #ifdef mac
 #define main SDLmain
 #endif
@@ -443,9 +460,12 @@ int main(int argc,char** argv) {
 	cl->GotFrameBufferUpdate=update;
 	cl->HandleKeyboardLedState=kbd_leds;
 	cl->HandleTextChat=text_chat;
+	cl->GotXCutText = got_selection;
 	if(!rfbInitClient(cl,&argc,argv))
 		return 1;
 
+	init_scrap();
+
 	while(1) {
 		if(SDL_PollEvent(&e))
 			handleSDLEvent(cl, &e);

client_examples/scrap.h

+/* Handle clipboard text and data in arbitrary formats */
+
+/* Miscellaneous defines */
+#define T(A, B, C, D)	(int)((A<<24)|(B<<16)|(C<<8)|(D<<0))
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+extern int init_scrap(void);
+extern int lost_scrap(void);
+extern void put_scrap(int type, int srclen, const char *src);
+extern void get_scrap(int type, int *dstlen, char **dst);
+extern int clipboard_filter(const SDL_Event *event);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */