Added a ui_scale, and ui_scale_touch setting. The default for ui_scale is 1.3, which makes every ui element smaller when not in touchscreen mode.

game/project.godot

@@ -190,6 +190,8 @@ window/stretch/mode="2d"
 window/stretch/aspect="expand"
 mouse_cursor/sensitivity=0.9
 window/size/viewport_scale=100
+window/size/ui_scale=1.2
+window/size/ui_scale_touch=1.0
 
 [ess]
 

game/ui/autoload/SettingsManager.gd

@@ -41,6 +41,8 @@ var _settings : Dictionary = {
 	},
 	"ui" : {
 		"touchscreen_mode" : OS.has_touchscreen_ui_hint(),
+		"ui_scale" : ProjectSettings.get("display/window/size/ui_scale"),
+		"ui_scale_touch" : ProjectSettings.get("display/window/size/ui_scale_touch"),
 	},
 	"debug" : {
 		"debug_info" : false
@@ -65,6 +67,8 @@ func _ready():
 				InputMap.action_erase_event(action, a)
 				InputMap.action_add_event(action, nie)
 				
+	set_stretch()
+				
 	
 func set_value(section, key, value) -> void:
 	_settings[section][key] = value
@@ -140,4 +144,50 @@ func set_rendering_vsync_via_compositor(value : bool) -> void:
 	ProjectSettings.set("display/window/vsync/vsync_via_compositor", value)
 	
 	OS.vsync_via_compositor = value
+
+func set_ui_touchscreen_mode(value : bool) -> void:
+	set_stretch()
+
+func set_ui_ui_scale(value : float) -> void:
+	ProjectSettings.set("rendering/window/size/ui_scale", value)
+	set_stretch()
 	
+func set_ui_ui_scale_touch(value : float) -> void:
+	ProjectSettings.set("rendering/window/size/ui_scale_touch", value)
+	set_stretch()
+
+func set_stretch():
+	if !loaded:
+		return
+		
+	var stretch_mode : String = ProjectSettings.get("display/window/stretch/mode")
+	var stretch_aspect : String = ProjectSettings.get("display/window/stretch/aspect")
+	var stretch_size : Vector2 = Vector2(ProjectSettings.get("display/window/size/width"), ProjectSettings.get("display/window/size/height"))
+	var stretch_shrink : float = ProjectSettings.get("display/window/stretch/shrink")
+	
+	var uiscale : float = 1
+	
+	if !get_value("ui", "touchscreen_mode"):
+		uiscale = get_value("ui", "ui_scale")
+	else:
+		uiscale = get_value("ui", "ui_scale_touch")
+		
+	stretch_size *= uiscale
+	
+	var sml_sm = SceneTree.STRETCH_MODE_DISABLED;
+	if (stretch_mode == "2d"):
+		sml_sm = SceneTree.STRETCH_MODE_2D;
+	elif (stretch_mode == "viewport"):
+		sml_sm = SceneTree.STRETCH_MODE_VIEWPORT;
+
+	var sml_aspect = SceneTree.STRETCH_ASPECT_IGNORE;
+	if (stretch_aspect == "keep"):
+		sml_aspect = SceneTree.STRETCH_ASPECT_KEEP;
+	elif (stretch_aspect == "keep_width"):
+		sml_aspect = SceneTree.STRETCH_ASPECT_KEEP_WIDTH;
+	elif (stretch_aspect == "keep_height"):
+		sml_aspect = SceneTree.STRETCH_ASPECT_KEEP_HEIGHT;
+	elif (stretch_aspect == "expand"):
+		sml_aspect = SceneTree.STRETCH_ASPECT_EXPAND;
+	
+	get_tree().set_screen_stretch(sml_sm, sml_aspect, stretch_size, stretch_shrink)

game/ui/autoload/SettingsManager.tscn

@@ -2,6 +2,5 @@
 
 [ext_resource path="res://ui/autoload/SettingsManager.gd" type="Script" id=1]
 
-
 [node name="SettingsManager" type="Node"]
 script = ExtResource( 1 )

game/ui/options/Options.tscn

@@ -68,10 +68,8 @@ margin_bottom = 70.0
 property_category = "rendering"
 property_name = "viewport_scale"
 property_label = "Viewport Scale"
-min_value = 20
-max_value = 100
-step = 5
-prefix = ""
+min_value = 20.0
+step = 5.0
 suffix = "%"
 
 [node name="Borderless" parent="PanelContainer/VBoxContainer/TabContainer/Video" instance=ExtResource( 4 )]
@@ -141,6 +139,28 @@ property_category = "ui"
 property_name = "touchscreen_mode"
 property_label = "Touchscreen Mode"
 
+[node name="OptionsSpinboxRow" parent="PanelContainer/VBoxContainer/TabContainer/Interface" instance=ExtResource( 8 )]
+margin_top = 58.0
+margin_bottom = 82.0
+property_category = "ui"
+property_name = "ui_scale"
+property_label = "UI Scale"
+min_value = 0.2
+max_value = 2.4
+step = 0.01
+rounded = false
+
+[node name="OptionsSpinboxRow2" parent="PanelContainer/VBoxContainer/TabContainer/Interface" instance=ExtResource( 8 )]
+margin_top = 90.0
+margin_bottom = 114.0
+property_category = "ui"
+property_name = "ui_scale_touch"
+property_label = "UI Scale Touch"
+min_value = 0.2
+max_value = 2.4
+step = 0.01
+rounded = false
+
 [node name="Debug" type="VBoxContainer" parent="PanelContainer/VBoxContainer/TabContainer"]
 visible = false
 anchor_right = 1.0

game/ui/options/OptionsSpinboxRow.gd

@@ -26,9 +26,10 @@ export(String) var property_name : String
 
 export(String) var property_label : String
 
-export(int) var min_value : int = 0
-export(int) var max_value : int = 100
-export(int) var step : int = 1
+export(float) var min_value : float = 0
+export(float) var max_value : float = 100
+export(float) var step : float = 1
+export(bool) var rounded : bool = true
 
 export(String) var prefix : String = ""
 export(String) var suffix : String = ""
@@ -47,6 +48,8 @@ func _ready():
 	_sb.prefix = prefix
 	_sb.suffix = suffix
 	
+	_sb.rounded = rounded
+	
 	if Engine.editor_hint:
 		return
 	

game/ui/options/OptionsSpinboxRow.tscn

@@ -11,7 +11,7 @@ script = ExtResource( 1 )
 __meta__ = {
 "_edit_use_anchors_": false
 }
-step = 0
+step = 0.0
 
 [node name="Label" type="Label" parent="."]
 margin_top = 5.0
@@ -25,5 +25,6 @@ margin_right = 527.0
 margin_bottom = 24.0
 size_flags_horizontal = 3
 size_flags_vertical = 3
+step = 0.0
 rounded = true
 align = 1