x11vnc: Fix off-screen bug for -ncache_cr copyrect.

x11vnc/ChangeLog

+2009-03-12  Karl Runge <runge@karlrunge.com>
+	* x11vnc: Fix off-screen bug for -ncache_cr copyrect.
+
 2009-03-07  Karl Runge <runge@karlrunge.com>
 	* x11vnc: allow range for X11VNC_SKIP_DISPLAY, document grab
 	  Xserver issue.  Add progress_client() to proceed more quickly

x11vnc/screen.c

@@ -1063,7 +1063,7 @@ void vnc_reflect_got_copyrect(rfbClient *cl, int src_x, int src_y, int w, int h,
 	if (dx != last_dx || dy != last_dy) {
 		rc = fb_push_wait(0.05, FB_COPY|FB_MOD);
 	}
-	if (1) fprintf(stderr, "vnc_reflect_got_copyrect: %03dx%03d+%03d+%03d   %3d %3d  rc=%d\n", dest_x, dest_y, w, h, dx, dy, rc);
+	if (0) fprintf(stderr, "vnc_reflect_got_copyrect: %03dx%03d+%03d+%03d   %3d %3d  rc=%d\n", dest_x, dest_y, w, h, dx, dy, rc);
 	reg = sraRgnCreateRect(dest_x, dest_y, dest_x + w, dest_y + h);
 	do_copyregion(reg, dx, dy, 0);
 	sraRgnDestroy(reg);

x11vnc/userinput.c

@@ -3825,7 +3825,8 @@ void ncache_pre_portions(Window orig_frame, Window frame, int *nidx_in, int try_
 			dx = 0;
 			dy = dpy_y;
 			sraRgnOffset(r2, dx, dy);
-if (ncdb) fprintf(stderr, "FB_COPY: %.4f 1) offscreen check:\n", dnow() - ntim);
+if (ncdb) fprintf(stderr, "FB_COPY: %.4f 1) offscreen:  dx, dy: %d, %d -> %d, %d orig %dx%d+%d+%d bs_xy: %d %d\n",
+    dnow() - ntim, bs_x - orig_x, bs_y - orig_y, dx, dy, orig_w, orig_h, orig_x, orig_y, bs_x, bs_y);
 
 			/* 0) save it in the invalid (offscreen) SU portion */
 			if (! *use_batch) {
@@ -4107,8 +4108,20 @@ void do_copyrect_drag_move(Window orig_frame, Window frame, int *nidx, int try_b
 	int dx, dy;
 	int use_batch = 0;
 	double ntim = dnow();
+	static int nob = -1;
 	sraRegionPtr r0, r1;
 
+	if (nob < 0) {
+		if (getenv("NOCRBATCH")) {
+			nob = 1;
+		} else {
+			nob = 0;
+		}
+	}
+	if (nob) {
+		try_batch = 0;
+	}
+
 	dx = x - now_x;
 	dy = y - now_y;
 	if (dx == 0 && dy == 0) {
@@ -4125,6 +4138,13 @@ if (ncdb) fprintf(stderr, "do_COPY: now_xy: %d %d, orig_wh: %d %d, xy: %d %d, wh
 
 	dx = x - now_x;
 	dy = y - now_y;
+
+	/* make sure the source is on-screen too */
+	sraRgnOffset(r1, -dx, -dy);
+	sraRgnAnd(r1, r0);
+	sraRgnOffset(r1, +dx, +dy);
+	sraRgnAnd(r1, r0);	/* just to be sure, problably not needed */
+
 	if (! use_batch) {
 		do_copyregion(r1, dx, dy, 0);
 		if (!fb_push_wait(0.2, FB_COPY)) {

x11vnc/x11vnc.1

@@ -2,7 +2,7 @@
 .TH X11VNC "1" "March 2009" "x11vnc " "User Commands"
 .SH NAME
 x11vnc - allow VNC connections to real X11 displays
-         version: 0.9.7, lastmod: 2009-03-07
+         version: 0.9.7, lastmod: 2009-03-08
 .SH SYNOPSIS
 .B x11vnc
 [OPTION]...

x11vnc/x11vnc.c

@@ -1824,7 +1824,8 @@ char msg2[] =
 "\n"
 "    x11vnc -ncache 10 ...\n"
 "\n"
-"more info: http://www.karlrunge.com/x11vnc/faq.html#faq-client-caching\n"
+"One can also add -ncache_cr for smooth 'copyrect' window motion.\n"
+"More info: http://www.karlrunge.com/x11vnc/faq.html#faq-client-caching\n"
 "\n"
 ;
 

x11vnc/x11vnc_defs.c

@@ -15,7 +15,7 @@ int xtrap_base_event_type = 0;
 int xdamage_base_event_type = 0;
 
 /*               date +'lastmod: %Y-%m-%d' */
-char lastmod[] = "0.9.7 lastmod: 2009-03-07";
+char lastmod[] = "0.9.7 lastmod: 2009-03-08";
 
 /* X display info */