Cleanup: Move node editor files to proper namespace

This commit moves code in all node editor files to the
`blender::ed::space_node` namespace, except for C API
functions defined in `ED_node.h`, which can only be moved
once all areas calling them are moved to C++.

The change is fairly straightforward, I just moved a couple
of "ED_" code blocks around to make the namespace more
contiguous, and there's the method for adding a pointer to
a struct in a C++ namespace in DNA.

Differential Revision: https://developer.blender.org/D13871

1 files changed, 12 insertions, 7 deletions

diff --git a/source/blender/editors/space_node/node_draw.cc b/source/blender/editors/space_node/node_draw.cc
index ee6dbc15c15..82da890fa9b 100644
--- a/source/blender/editors/space_node/node_draw.cc
+++ b/source/blender/editors/space_node/node_draw.cc
@@ -88,13 +88,6 @@
 
 #include "node_intern.hh" /* own include */
 
-using blender::Array;
-using blender::float2;
-using blender::Map;
-using blender::Set;
-using blender::Span;
-using blender::Vector;
-using blender::VectorSet;
 using blender::fn::CPPType;
 using blender::fn::FieldCPPType;
 using blender::fn::FieldInput;
@@ -115,6 +108,8 @@ float ED_node_grid_size()
 
 void ED_node_tree_update(const bContext *C)
 {
+  using namespace blender::ed::space_node;
+
   SpaceNode *snode = CTX_wm_space_node(C);
   if (snode) {
     snode_set_context(*C);
@@ -176,6 +171,8 @@ void ED_node_tag_update_id(ID *id)
   }
 }
 
+namespace blender::ed::space_node {
+
 static bool compare_nodes(const bNode *a, const bNode *b)
 {
   /* These tell if either the node or any of the parent nodes is selected.
@@ -1071,8 +1068,12 @@ static void node_socket_draw_nested(const bContext &C,
   UI_block_emboss_set(&block, old_emboss);
 }
 
+}  // namespace blender::ed::space_node
+
 void ED_node_socket_draw(bNodeSocket *sock, const rcti *rect, const float color[4], float scale)
 {
+  using namespace blender::ed::space_node;
+
   const float size = 2.25f * NODE_SOCKSIZE * scale;
   rcti draw_rect = *rect;
   float outline_color[4] = {0};
@@ -1119,6 +1120,8 @@ void ED_node_socket_draw(bNodeSocket *sock, const rcti *rect, const float color[
   GPU_blend(state);
 }
 
+namespace blender::ed::space_node {
+
 /* **************  Socket callbacks *********** */
 
 static void node_draw_preview_background(rctf *rect)
@@ -2879,3 +2882,5 @@ void node_draw_space(const bContext &C, ARegion &region)
   /* Scrollers. */
   UI_view2d_scrollers_draw(&v2d, nullptr);
 }
+
+}  // namespace blender::ed::space_node