Add InspectorActionButton type variation for block canvas buttons

We want the buttons in the block canvas empty state to have a visible
outline against the default background. We can achieve this by using the
"InspectorActionButton" type variation, which is used for a similar
situation in the Godot editor's built in Inspector panel.

https://phabricator.endlessm.com/T35541

Author: dylanmccall

addons/block_code/ui/block_canvas/block_canvas.gd

@@ -27,7 +27,8 @@ signal reconnect_block(block: Block)
 
 
 func _ready():
-	_open_scene_button.icon = _open_scene_button.get_theme_icon("Load", "EditorIcons")
+	if not _open_scene_button.icon:
+		_open_scene_button.icon = _open_scene_button.get_theme_icon("Load", "EditorIcons")
 	_populate_block_scenes_by_class()
 
 

addons/block_code/ui/block_canvas/block_canvas.tscn

@@ -3,7 +3,7 @@
 [ext_resource type="Script" path="res://addons/block_code/ui/block_canvas/block_canvas.gd" id="1_tk8h2"]
 [ext_resource type="Texture2D" uid="uid://cmusxj1ppspnp" path="res://addons/block_code/block_code_node/block_code_node.svg" id="2_710vn"]
 
-[sub_resource type="Image" id="Image_p0ogw"]
+[sub_resource type="Image" id="Image_2jxnn"]
 data = {
 "data": PackedByteArray(255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 255, 255, 0, 255, 94, 94, 127, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 255, 255, 0, 255, 93, 93, 255, 255, 94, 94, 127, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 94, 94, 127, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 94, 94, 127, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 231, 255, 94, 94, 54, 255, 94, 94, 57, 255, 93, 93, 233, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 231, 255, 94, 94, 54, 255, 94, 94, 57, 255, 93, 93, 233, 255, 93, 93, 255, 255, 93, 93, 255, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 97, 97, 42, 255, 255, 255, 0, 255, 255, 255, 0, 255, 97, 97, 42, 255, 93, 93, 233, 255, 93, 93, 232, 255, 93, 93, 41, 255, 255, 255, 0, 255, 255, 255, 0, 255, 97, 97, 42, 255, 93, 93, 233, 255, 93, 93, 232, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 96, 96, 45, 255, 93, 93, 44, 255, 255, 255, 0, 255, 97, 97, 42, 255, 97, 97, 42, 255, 255, 255, 0, 255, 96, 96, 45, 255, 93, 93, 44, 255, 255, 255, 0, 255, 97, 97, 42, 255, 97, 97, 42, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 96, 96, 45, 255, 93, 93, 235, 255, 94, 94, 234, 255, 95, 95, 43, 255, 255, 255, 0, 255, 255, 255, 0, 255, 96, 96, 45, 255, 93, 93, 235, 255, 94, 94, 234, 255, 95, 95, 43, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 235, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 233, 255, 95, 95, 59, 255, 96, 96, 61, 255, 93, 93, 235, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 233, 255, 95, 95, 59, 255, 96, 96, 61, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 93, 93, 255, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0, 255, 255, 255, 0),
 "format": "RGBA8",
@@ -12,8 +12,8 @@ data = {
 "width": 16
 }
 
-[sub_resource type="ImageTexture" id="ImageTexture_vt8ew"]
-image = SubResource("Image_p0ogw")
+[sub_resource type="ImageTexture" id="ImageTexture_jgo72"]
+image = SubResource("Image_2jxnn")
 
 [node name="BlockCanvas" type="MarginContainer"]
 anchors_preset = 15
@@ -70,6 +70,7 @@ size_flags_horizontal = 4
 unique_name_in_owner = true
 layout_mode = 2
 size_flags_horizontal = 4
+theme_type_variation = &"InspectorActionButton"
 text = "Add Block Code"
 icon = ExtResource("2_710vn")
 
@@ -94,13 +95,15 @@ size_flags_horizontal = 4
 unique_name_in_owner = true
 layout_mode = 2
 size_flags_horizontal = 4
+theme_type_variation = &"InspectorActionButton"
 text = "Open in Editor"
-icon = SubResource("ImageTexture_vt8ew")
+icon = SubResource("ImageTexture_jgo72")
 
 [node name="ReplaceBlockCodeButton" type="Button" parent="SelectedNodeWithBlockCodeBox/ButtonsBox"]
 unique_name_in_owner = true
 layout_mode = 2
 size_flags_horizontal = 4
+theme_type_variation = &"InspectorActionButton"
 text = "Override Block Code"
 icon = ExtResource("2_710vn")