rdp: Don't rely on Synchronize packet for first screen refresh

Last FreeRDP don't send Synchronize packets anymore, so send the
first screen refresh when we're "connected". The client cursor is
also disabled during this step.

src/compositor-rdp.c

@@ -640,10 +640,14 @@ xf_peer_post_connect(freerdp_peer* client)
 	struct rdp_compositor *c;
 	struct rdp_output *output;
 	rdpSettings *settings;
+	rdpPointerUpdate *pointer;
 	struct xkb_context *xkbContext;
 	struct xkb_rule_names xkbRuleNames;
 	struct xkb_keymap *keymap;
 	int i;
+	pixman_box32_t box;
+	pixman_region32_t damage;
+
 
 	peerCtx = (RdpPeerContext *)client->context;
 	c = peerCtx->rdpCompositor;
@@ -697,6 +701,23 @@ xf_peer_post_connect(freerdp_peer* client)
 	weston_seat_init_pointer(&peerCtx->item.seat);
 
 	peerCtx->item.flags |= RDP_PEER_ACTIVATED;
+
+	/* disable pointer on the client side */
+	pointer = client->update->pointer;
+	pointer->pointer_system.type = SYSPTR_NULL;
+	pointer->PointerSystem(client->context, &pointer->pointer_system);
+
+	/* sends a full refresh */
+	box.x1 = 0;
+	box.y1 = 0;
+	box.x2 = output->base.width;
+	box.y2 = output->base.height;
+	pixman_region32_init_with_extents(&damage, &box);
+
+	rdp_peer_refresh_region(&damage, client);
+
+	pixman_region32_fini(&damage);
+
 	return TRUE;
 }
 
@@ -759,16 +780,11 @@ static void
 xf_input_synchronize_event(rdpInput *input, UINT32 flags)
 {
 	freerdp_peer *client = input->context->peer;
-	rdpPointerUpdate *pointer = client->update->pointer;
 	RdpPeerContext *peerCtx = (RdpPeerContext *)input->context;
 	struct rdp_output *output = peerCtx->rdpCompositor->output;
 	pixman_box32_t box;
 	pixman_region32_t damage;
 
-	/* disable pointer on the client side */
-	pointer->pointer_system.type = SYSPTR_NULL;
-	pointer->PointerSystem(client->context, &pointer->pointer_system);
-
 	/* sends a full refresh */
 	box.x1 = 0;
 	box.y1 = 0;