expand button (forgot to add the tscn )

src/Tools/BaseDraw.tscn

@@ -1,8 +1,10 @@
-[gd_scene load_steps=7 format=3 uid="uid://ubyatap3sylf"]
+[gd_scene load_steps=9 format=3 uid="uid://ubyatap3sylf"]
 
 [ext_resource type="PackedScene" uid="uid://yjhp0ssng2mp" path="res://src/UI/Nodes/ValueSlider.tscn" id="1"]
 [ext_resource type="PackedScene" uid="uid://ctfgfelg0sho8" path="res://src/Tools/BaseTool.tscn" id="2"]
 [ext_resource type="Script" path="res://src/Tools/BaseDraw.gd" id="3"]
+[ext_resource type="Texture2D" uid="uid://ct8wn8m6x4m54" path="res://assets/graphics/misc/value_arrow.svg" id="3_4bfcu"]
+[ext_resource type="Texture2D" uid="uid://bhkmiijflfqxx" path="res://assets/graphics/misc/value_arrow_up.svg" id="4_8a8ae"]
 
 [sub_resource type="ButtonGroup" id="ButtonGroup_7u3x0"]
 resource_name = "rotate"
@@ -29,7 +31,17 @@ anti_aliasing = false
 [node name="ToolOptions" instance=ExtResource("2")]
 script = ExtResource("3")
 
-[node name="Flip" type="HBoxContainer" parent="." index="2"]
+[node name="ExpandButton" type="TextureButton" parent="." index="2" groups=["UIButtons"]]
+visible = false
+layout_mode = 2
+size_flags_horizontal = 0
+mouse_default_cursor_shape = 2
+toggle_mode = true
+texture_normal = ExtResource("3_4bfcu")
+texture_pressed = ExtResource("4_8a8ae")
+
+[node name="Flip" type="HBoxContainer" parent="." index="3"]
+visible = false
 layout_mode = 2
 
 [node name="FlipX" type="CheckBox" parent="Flip" index="0"]
@@ -40,7 +52,8 @@ text = "Flip X"
 layout_mode = 2
 text = "Flip Y"
 
-[node name="Rotate" type="HBoxContainer" parent="." index="3"]
+[node name="Rotate" type="HBoxContainer" parent="." index="4"]
+visible = false
 layout_mode = 2
 
 [node name="Rotate90" type="CheckBox" parent="Rotate" index="0"]
@@ -58,7 +71,7 @@ layout_mode = 2
 button_group = SubResource("ButtonGroup_7u3x0")
 text = "R 270"
 
-[node name="Brush" type="HBoxContainer" parent="." index="4"]
+[node name="Brush" type="HBoxContainer" parent="." index="5"]
 layout_mode = 2
 alignment = 1
 
@@ -92,12 +105,13 @@ suffix = "px"
 global_increment_action = "brush_size_increment"
 global_decrement_action = "brush_size_decrement"
 
-[node name="ColorInterpolation" parent="." index="5" instance=ExtResource("1")]
+[node name="ColorInterpolation" parent="." index="6" instance=ExtResource("1")]
 visible = false
 layout_mode = 2
 tooltip_text = "0: Color from the brush itself, 100: the currently selected color"
 prefix = "Brush color from:"
 
+[connection signal="toggled" from="ExpandButton" to="." method="_on_expand_button_toggled"]
 [connection signal="toggled" from="Flip/FlipX" to="." method="_on_flip_x_toggled"]
 [connection signal="toggled" from="Flip/FlipY" to="." method="_on_flip_y_toggled"]
 [connection signal="toggled" from="Rotate/Rotate90" to="." method="_on_rotate_90_toggled"]