Added hierarchy pane

addons/material_maker/engine/gen_base.gd

@@ -7,6 +7,7 @@ Base class for texture generators, that defines their API
 """
 
 signal parameter_changed
+signal output_changed(index)
 
 class InputPort:
 	var generator : MMGenBase = null
@@ -49,6 +50,9 @@ func can_be_deleted() -> bool:
 func toggle_editable() -> bool:
 	return false
 
+func is_template() -> bool:
+	return model != null
+
 func is_editable() -> bool:
 	return false
 
@@ -117,6 +121,7 @@ func notify_output_change(output_index : int) -> void:
 	var targets = get_targets(output_index)
 	for target in targets:
 		target.generator.source_changed(target.input_index)
+	emit_signal("output_changed", output_index)
 
 func source_changed(__) -> void:
 	emit_signal("parameter_changed", "__input_changed__", 0)

material_maker/main_window.gd

@@ -16,6 +16,7 @@ onready var layout = $VBoxContainer/Layout
 var library
 var preview_2d
 var preview_3d
+var hierarchy
 
 onready var preview_2d_background = $VBoxContainer/Layout/SplitRight/ProjectsPane/Preview2D
 onready var preview_2d_background_button = $VBoxContainer/Layout/SplitRight/ProjectsPane/PreviewUI/Preview2DButton
@@ -130,6 +131,8 @@ func _ready() -> void:
 	library = layout.get_pane("Library")
 	preview_2d = layout.get_pane("Preview2D")
 	preview_3d = layout.get_pane("Preview3D")
+	hierarchy = layout.get_pane("Hierarchy")
+	hierarchy.connect("group_selected", self, "on_group_selected")
 
 	# Load recent projects
 	load_recents()
@@ -521,6 +524,7 @@ func _on_PopupMenu_id_pressed(id) -> void:
 # Preview
 
 func update_preview() -> void:
+	hierarchy.update_from_graph_edit(get_current_graph_edit())
 	var status
 	need_update = true
 	if updating:
@@ -587,6 +591,11 @@ func _on_Projects_tab_changed(tab) -> void:
 		current_tab = new_tab
 		update_preview()
 
+func on_group_selected(generator) -> void:
+	var graph_edit : MMGraphEdit = get_current_graph_edit()
+	if graph_edit != null:
+		graph_edit.edit_subgraph(generator)
+
 func _exit_tree() -> void:
 	# Save the window position and size to remember it when restarting the application
 	config_cache.set_value("window", "screen", OS.current_screen)

material_maker/main_window_layout.gd

@@ -9,7 +9,8 @@ const PANE_POSITIONS = {
 const PANES = [
 	{ name="Library", scene=preload("res://material_maker/library.tscn"), position="TopLeft" },
 	{ name="Preview2D", scene=preload("res://material_maker/preview/preview_2d_panel.tscn"), position="BottomLeft" },
-	{ name="Preview3D", scene=preload("res://material_maker/preview/preview_3d_panel.tscn"), position="BottomLeft" }
+	{ name="Preview3D", scene=preload("res://material_maker/preview/preview_3d_panel.tscn"), position="BottomLeft" },
+	{ name="Hierarchy", scene=preload("res://material_maker/widgets/graph_tree/hierarchy_pane.tscn"), position="TopRight" }
 ]
 
 var panes = {}

material_maker/widgets/graph_tree/hierarchy_pane.gd

@@ -0,0 +1,57 @@
+extends Tree
+
+signal group_selected
+
+func update_from_graph_edit(graph_edit) -> void:
+	set_column_expand(0, true)
+#	columns = 4
+#	for i in range(1, 4):
+#		set_column_expand(i, false)
+#		set_column_min_width(i, 24)
+	if graph_edit == null:
+		return
+	var file_name = "PTex"
+	if graph_edit.save_path != null:
+		file_name = graph_edit.save_path.get_file()
+	fill_tree(graph_edit.top_generator, graph_edit.generator, file_name)
+
+func fill_tree(top : MMGenGraph, selected : MMGenGraph, top_name : String) -> void:
+	clear()
+	if top == null or selected == null:
+		return
+	var root : TreeItem = create_item(null)
+	root.set_text(0, top_name)
+	if top == selected:
+		root.set_custom_color(0, Color(0.5, 0.5, 1))
+	else:
+		root.set_custom_color(0, Color(1, 1, 1))
+	root.set_metadata(0, top)
+	fill_item(root, top, selected)
+
+#func set_icon(item, generator):
+#	var result = generator.render(0, 24, true)
+#	while result is GDScriptFunctionState:
+#		result = yield(result, "completed")
+#	var tex = ImageTexture.new()
+#	result.copy_to_texture(tex)
+#	result.release()
+#	item.set_icon(3, tex)
+
+func fill_item(parent : TreeItem, generator : MMGenGraph, selected : MMGenGraph) -> void:
+	for c in generator.get_children():
+		if c is MMGenGraph:
+			if c.is_template():
+				continue
+			var item : TreeItem = create_item(parent)
+			item.set_text(0, c.get_type_name())
+			if c == selected:
+				item.set_custom_color(0, Color(0.5, 0.5, 1))
+			elif c.is_editable():
+				item.set_custom_color(0, Color(1, 1, 1))
+			item.set_metadata(0, c)
+#			if c.get_output_defs().size() > 0:
+#				call_deferred("set_icon", item, c)
+			fill_item(item, c, selected)
+
+func _on_Hierarchy_item_double_clicked():
+	emit_signal("group_selected", get_selected().get_metadata(0))

material_maker/widgets/graph_tree/hierarchy_pane.tscn

@@ -0,0 +1,15 @@
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://material_maker/widgets/graph_tree/hierarchy_pane.gd" type="Script" id=1]
+
+[node name="Hierarchy" type="Tree"]
+anchor_right = 1.0
+anchor_bottom = 1.0
+rect_min_size = Vector2( 200, 150 )
+allow_reselect = true
+script = ExtResource( 1 )
+__meta__ = {
+"_edit_use_anchors_": false
+}
+[connection signal="item_activated" from="." to="." method="_on_Hierarchy_item_double_clicked"]
+[connection signal="item_double_clicked" from="." to="." method="_on_Hierarchy_item_double_clicked"]