Added popup menu for adding nodes on graph edit with space key

material_maker/graph_edit.gd

@@ -34,7 +34,6 @@ func _gui_input(event) -> void:
 			remove_selection()
 
 # Misc. useful functions
-
 func get_source(node, port) -> Dictionary:
 	for c in get_connection_list():
 		if c.to == node and c.to_port == port:
@@ -372,6 +371,10 @@ func set_last_selected(node) -> void:
 		last_selected = null
 
 func _on_GraphEdit_gui_input(event) -> void:
+	if event.is_action_pressed("ui_library_popup") && get_rect().has_point(get_local_mouse_position()):
+		$AddNodePopup.rect_global_position = get_global_mouse_position()
+		$AddNodePopup.show()
+	
 	if event is InputEventMouseButton:
 		call_deferred("check_last_selected")
 
@@ -379,3 +382,5 @@ func check_last_selected() -> void:
 	if last_selected != null and !(is_instance_valid(last_selected) and last_selected.selected):
 		last_selected = null
 		emit_signal("node_selected", null)
+
+

material_maker/graph_edit.tscn

@@ -1,7 +1,8 @@
-[gd_scene load_steps=7 format=2]
+[gd_scene load_steps=8 format=2]
 
 [ext_resource path="res://material_maker/graph_edit.gd" type="Script" id=1]
 [ext_resource path="res://material_maker/icons/icons.svg" type="Texture" id=2]
+[ext_resource path="res://material_maker/widgets/add_node_popup.tscn" type="PackedScene" id=3]
 
 [sub_resource type="StyleBoxFlat" id=1]
 bg_color = Color( 0.6, 0.6, 0.6, 0 )
@@ -34,6 +35,7 @@ wait_time = 0.2
 one_shot = true
 
 [node name="GraphUI" type="HBoxContainer" parent="."]
+editor/display_folded = true
 anchor_left = 1.0
 anchor_right = 1.0
 margin_left = -262.0
@@ -75,6 +77,8 @@ margin_right = 246.0
 margin_bottom = 24.0
 hint_tooltip = "Show hierarchy"
 icon = SubResource( 4 )
+
+[node name="AddNodePopup" parent="." instance=ExtResource( 3 )]
 [connection signal="connection_request" from="." to="." method="connect_node"]
 [connection signal="disconnection_request" from="." to="." method="disconnect_node"]
 [connection signal="duplicate_nodes_request" from="." to="." method="duplicate_selected"]

material_maker/widgets/add_node_popup.gd

@@ -0,0 +1,96 @@
+extends Popup
+
+var libraries = []
+var data = []
+onready var itemlist : ItemList = $PanelContainer/VBoxContainer/ItemList 
+onready var filter_line_edit : LineEdit = $PanelContainer/VBoxContainer/Filter
+
+func _ready() -> void:
+	
+	var lib_path = OS.get_executable_path().get_base_dir()+"/library/base.json"
+	if !add_library(lib_path):
+		add_library("res://material_maker/library/base.json")
+	add_library("user://library/user.json")
+	
+	
+	filter_line_edit.connect("text_changed" ,self,"update_list")
+	filter_line_edit.connect("text_entered",self,"filter_entered")
+	itemlist.connect("item_activated",self,"item_activated")
+	
+	update_list()
+
+func filter_entered(filter):
+	item_activated(0)
+#func get_selected_item_name() -> String:
+#	return get_item_path(itemlist.get_selected())
+func item_activated(index):
+	if (index>=itemlist.get_item_count()):
+		return
+	if (itemlist.is_item_selectable(index) == false):
+		item_activated(index+1)
+		return
+	get_parent().create_nodes(data[index],get_parent().offset_from_global_position(get_global_transform().xform(get_local_mouse_position())))
+	hide()
+	clear()
+	pass
+func show():
+	.show()
+	filter_line_edit.grab_focus()
+func update_list(filter=""):
+	clear_list()
+	data.clear()
+	for library in libraries:
+		for obj in library:
+	
+			if (obj.tree_item.to_lower().find(filter)!=-1 || filter == ""):
+				data.append(obj)
+				itemlist.add_item(obj.tree_item.split("/")[-1],get_preview_texture(obj),obj.has("type"))
+
+
+func get_preview_texture(data : Dictionary) -> ImageTexture:
+	if data.has("icon") and data.has("library"):
+		var image_path = data.library.left(data.library.rfind("."))+"/"+data.icon+".png"
+		var t : ImageTexture
+		if image_path.left(6) == "res://":
+			image_path = ProjectSettings.globalize_path(image_path)
+		t = ImageTexture.new()
+		var image : Image = Image.new()
+		if image.load(image_path) == OK:
+			t.create_from_image(image)
+		else:
+			print("Cannot load image "+image_path)
+		return t
+	return null
+	
+	
+func clear_list():
+	itemlist.clear()
+func add_library(file_name : String, filter : String = "") -> bool:
+
+	var file = File.new()
+	if file.open(file_name, File.READ) != OK:
+		return false
+	var lib = parse_json(file.get_as_text())
+	file.close()
+	if lib != null and lib.has("lib"):
+		for m in lib.lib:
+			m.library = file_name
+		libraries.push_back(lib.lib)
+		return true
+	return false
+
+
+func _input(event):
+	if event is InputEventMouseButton and event.is_pressed() and event.button_index == BUTTON_LEFT:
+		if !get_rect().has_point(event.position):
+			clear()
+			hide()
+			
+func _unhandled_input(event):
+	if event is InputEventKey and event.scancode == KEY_ESCAPE:
+		clear()
+		hide()
+	
+func clear():
+	filter_line_edit.text = ""
+	update_list()

material_maker/widgets/add_node_popup.tscn

@@ -0,0 +1,33 @@
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://material_maker/widgets/add_node_popup.gd" type="Script" id=1]
+
+[node name="AddNodePopup" type="Popup"]
+visible = true
+margin_right = 228.0
+margin_bottom = 319.0
+mouse_filter = 1
+script = ExtResource( 1 )
+
+[node name="PanelContainer" type="PanelContainer" parent="."]
+anchor_right = 1.0
+anchor_bottom = 1.0
+
+[node name="VBoxContainer" type="VBoxContainer" parent="PanelContainer"]
+margin_left = 7.0
+margin_top = 7.0
+margin_right = 221.0
+margin_bottom = 312.0
+
+[node name="Filter" type="LineEdit" parent="PanelContainer/VBoxContainer"]
+margin_right = 214.0
+margin_bottom = 24.0
+rect_min_size = Vector2( 0, 20 )
+size_flags_horizontal = 3
+
+[node name="ItemList" type="ItemList" parent="PanelContainer/VBoxContainer"]
+margin_top = 28.0
+margin_right = 214.0
+margin_bottom = 305.0
+size_flags_horizontal = 3
+size_flags_vertical = 3

project.godot

@@ -177,7 +177,6 @@ _global_script_class_icons={
 [application]
 
 config/name="Material Maker"
-config/description="An open source, extensible procedural material generation tool"
 run/main_scene="res://material_maker/main_window.tscn"
 config/use_custom_user_dir=true
 config/custom_user_dir_name="material_maker"
@@ -185,6 +184,7 @@ boot_splash/image="res://rodz_labs_logo.png"
 boot_splash/fullsize=false
 boot_splash/bg_color=Color( 0.0901961, 0.0941176, 0.141176, 1 )
 config/icon="res://icon.png"
+config/description="An open source, extensible procedural material generation tool"
 config/release="0.8"
 
 [autoload]
@@ -220,6 +220,11 @@ toggle_fullscreen={
 , Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":true,"shift":false,"control":false,"meta":false,"command":false,"pressed":false,"scancode":16777221,"unicode":0,"echo":false,"script":null)
  ]
 }
+ui_library_popup={
+"deadzone": 0.5,
+"events": [ Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":0,"alt":false,"shift":false,"control":false,"meta":false,"command":false,"pressed":false,"scancode":32,"unicode":0,"echo":false,"script":null)
+ ]
+}
 
 [logging]