NodeEditor: Connect Viewer To Socket Selection

Request from the Spring team. When compositing the CTRL-Shift Click on a
node cycles the viewnode with an output socket. When you have many
render layers you spend time cycling to the desired socket. This patch
allows the user to CTRL-Shift Click on a socket to connect directly to
that socket.

Reviewed By: brecht

Maniphest Tasks: T62785

Differential Revision: https://developer.blender.org/D4564

1 files changed, 11 insertions, 0 deletions

diff --git a/source/blender/editors/space_node/node_relationships.c b/source/blender/editors/space_node/node_relationships.c
index d81c764af81..1aaf0baae6d 100644
--- a/source/blender/editors/space_node/node_relationships.c
+++ b/source/blender/editors/space_node/node_relationships.c
@@ -438,6 +438,17 @@ static int node_link_viewer(const bContext *C, bNode *tonode)
 		}
 	}
 
+	if (tonode) {
+		/* Find a selected socket that overrides the socket to connect to */
+		for (bNodeSocket *sock2 = tonode->outputs.first; sock2; sock2 = sock2->next) {
+			if (!nodeSocketIsHidden(sock2) && sock2->flag & SELECT) {
+				sock = sock2;
+				break;
+			}
+		}
+	}
+
+
 	/* find a socket starting from the first socket */
 	if (!sock) {
 		for (sock = tonode->outputs.first; sock; sock = sock->next)