Allow disabling graph nodes.

SConstruct

@@ -259,6 +259,7 @@ opts.Add(BoolVariable("disable_navigation", "Disable 2D and 3D navigation for a
 opts.Add(BoolVariable("disable_physics", "Disable 2D and 3D physics for a smaller executable", False))
 opts.Add(BoolVariable("disable_visual_shader", "Disable visual shader for a smaller executable", False))
 opts.Add(BoolVariable("disable_advanced_gui", "Disable advanced GUI nodes and behaviors", False))
+opts.Add(BoolVariable("disable_graph", "Disable graph nodes for a smaller executable", False))
 opts.Add("build_profile", "Path to a file containing a feature build profile", "")
 opts.Add(BoolVariable("modules_enabled_by_default", "If no, disable all modules except ones explicitly enabled", True))
 opts.Add(BoolVariable("no_editor_splash", "Don't use the custom splash screen for the editor", True))
@@ -1051,6 +1052,16 @@ if env["disable_advanced_gui"]:
     else:
         env.Append(CPPDEFINES=["ADVANCED_GUI_DISABLED"])
 
+if env["disable_graph"]:
+    if env.editor_build:
+        print_error(
+            "Build option `disable_graph=yes` cannot be used for editor builds, "
+            "only for export template builds."
+        )
+        Exit(255)
+    else:
+        env.Append(CPPDEFINES=["_GRAPH_DISABLED"])
+
 if env["minizip"]:
     env.Append(CPPDEFINES=["MINIZIP_ENABLED"])
 if env["brotli"]:

scene/gui/SCsub

@@ -4,3 +4,6 @@ from misc.utility.scons_hints import *
 Import("env")
 
 env.add_source_files(env.scene_sources, "*.cpp")
+
+if not env["disable_graph"]:
+	env.add_source_files(env.scene_sources, "graph/*.cpp")

scene/gui/graph_edit.cpp → scene/gui/graph/graph_edit.cpp

@@ -38,9 +38,9 @@
 #include "scene/2d/line_2d.h"
 #include "scene/gui/box_container.h"
 #include "scene/gui/button.h"
-#include "scene/gui/graph_edit_arranger.h"
-#include "scene/gui/graph_frame.h"
-#include "scene/gui/graph_node.h"
+#include "scene/gui/graph/graph_edit_arranger.h"
+#include "scene/gui/graph/graph_frame.h"
+#include "scene/gui/graph/graph_node.h"
 #include "scene/gui/label.h"
 #include "scene/gui/panel_container.h"
 #include "scene/gui/scroll_bar.h"

scene/gui/graph_edit_arranger.cpp → scene/gui/graph/graph_edit_arranger.cpp

@@ -30,8 +30,8 @@
 
 #include "graph_edit_arranger.h"
 
-#include "scene/gui/graph_edit.h"
-#include "scene/gui/graph_node.h"
+#include "scene/gui/graph/graph_edit.h"
+#include "scene/gui/graph/graph_node.h"
 
 void GraphEditArranger::arrange_nodes() {
 	ERR_FAIL_NULL(graph_edit);

scene/gui/graph_element.cpp → scene/gui/graph/graph_element.cpp

@@ -30,7 +30,7 @@
 
 #include "graph_element.h"
 
-#include "scene/gui/graph_edit.h"
+#include "scene/gui/graph/graph_edit.h"
 #include "scene/theme/theme_db.h"
 
 #ifdef TOOLS_ENABLED

scene/gui/graph_frame.h → scene/gui/graph/graph_frame.h

@@ -31,7 +31,7 @@
 #ifndef GRAPH_FRAME_H
 #define GRAPH_FRAME_H
 
-#include "scene/gui/graph_element.h"
+#include "scene/gui/graph/graph_element.h"
 
 class HBoxContainer;
 

scene/gui/graph_node.h → scene/gui/graph/graph_node.h

@@ -31,7 +31,7 @@
 #ifndef GRAPH_NODE_H
 #define GRAPH_NODE_H
 
-#include "scene/gui/graph_element.h"
+#include "scene/gui/graph/graph_element.h"
 
 class HBoxContainer;
 

scene/register_scene_types.cpp

@@ -69,9 +69,11 @@
 #include "scene/gui/dialogs.h"
 #include "scene/gui/file_dialog.h"
 #include "scene/gui/flow_container.h"
-#include "scene/gui/graph_edit.h"
-#include "scene/gui/graph_frame.h"
-#include "scene/gui/graph_node.h"
+#ifndef _GRAPH_DISABLED
+#include "scene/gui/graph/graph_edit.h"
+#include "scene/gui/graph/graph_frame.h"
+#include "scene/gui/graph/graph_node.h"
+#endif // !_GRAPH_DISABLED
 #include "scene/gui/grid_container.h"
 #include "scene/gui/item_list.h"
 #include "scene/gui/label.h"
@@ -504,10 +506,12 @@ void register_scene_types() {
 	GDREGISTER_CLASS(HSplitContainer);
 	GDREGISTER_CLASS(VSplitContainer);
 
+#ifndef _GRAPH_DISABLED
 	GDREGISTER_CLASS(GraphElement);
 	GDREGISTER_CLASS(GraphNode);
 	GDREGISTER_CLASS(GraphFrame);
 	GDREGISTER_CLASS(GraphEdit);
+#endif // !_GRAPH_DISABLED
 
 	OS::get_singleton()->yield(); // may take time to init
 
@@ -1292,7 +1296,9 @@ void register_scene_types() {
 	if (RenderingServer::get_singleton()) {
 		// RenderingServer needs to exist for this to succeed.
 		ColorPicker::init_shaders();
+#ifndef _GRAPH_DISABLED
 		GraphEdit::init_shaders();
+#endif // !_GRAPH_DISABLED
 	}
 
 	SceneDebugger::initialize();
@@ -1344,7 +1350,9 @@ void unregister_scene_types() {
 	ParticleProcessMaterial::finish_shaders();
 	CanvasItemMaterial::finish_shaders();
 	ColorPicker::finish_shaders();
+#ifndef _GRAPH_DISABLED
 	GraphEdit::finish_shaders();
+#endif // !_GRAPH_DISABLED
 	SceneStringNames::free();
 
 	OS::get_singleton()->benchmark_end_measure("Scene", "Unregister Types");