Add a theme usability setting which updates the touch area of UI elements (e.g: scrollbar) for the editor on touchscreen devices

doc/classes/EditorSettings.xml

@@ -510,6 +510,10 @@
 		<member name="interface/theme/custom_theme" type="String" setter="" getter="">
 			The custom theme resource to use for the editor. Must be a Godot theme resource in [code].tres[/code] or [code].res[/code] format.
 		</member>
+		<member name="interface/theme/enable_touchscreen_touch_area" type="bool" setter="" getter="">
+			If [code]true[/code], increases the touch area for the UI elements to improve usability on touchscreen devices.
+			[b]Note:[/b] Defaults to [code]true[/code] on touchscreen devices.
+		</member>
 		<member name="interface/theme/highlight_tabs" type="bool" setter="" getter="">
 			If [code]true[/code], makes the background of selected tabs more contrasted in the editor theme (brighter on dark themes, darker on light themes).
 		</member>

editor/editor_settings.cpp

@@ -348,6 +348,7 @@ void EditorSettings::_load_defaults(Ref<ConfigFile> p_extra_config) {
 	// Theme
 	_initial_set("interface/theme/preset", "Default");
 	hints["interface/theme/preset"] = PropertyInfo(Variant::STRING, "interface/theme/preset", PROPERTY_HINT_ENUM, "Default,Alien,Arc,Godot 2,Grey,Light,Solarized (Dark),Solarized (Light),Custom", PROPERTY_USAGE_DEFAULT);
+	_initial_set("interface/theme/enable_touchscreen_touch_area", OS::get_singleton()->has_touchscreen_ui_hint());
 	_initial_set("interface/theme/icon_and_font_color", 0);
 	hints["interface/theme/icon_and_font_color"] = PropertyInfo(Variant::INT, "interface/theme/icon_and_font_color", PROPERTY_HINT_ENUM, "Auto,Dark,Light", PROPERTY_USAGE_DEFAULT);
 	_initial_set("interface/theme/base_color", Color(0.2, 0.23, 0.31));

editor/editor_themes.cpp

@@ -305,6 +305,7 @@ Ref<Theme> create_editor_theme(const Ref<Theme> p_theme) {
 
 	String preset = EDITOR_GET("interface/theme/preset");
 
+	bool enable_touchscreen_touch_area = EDITOR_GET("interface/theme/enable_touchscreen_touch_area");
 	bool highlight_tabs = EDITOR_GET("interface/theme/highlight_tabs");
 	int border_size = EDITOR_GET("interface/theme/border_size");
 
@@ -316,11 +317,7 @@ Ref<Theme> create_editor_theme(const Ref<Theme> p_theme) {
 
 	// Please, use alphabet order if you've added new theme here(After "Default" and "Custom")
 
-	if (preset == "Default") {
+	if (preset == "Custom") {
-		preset_accent_color = Color(0.41, 0.61, 0.91);
-		preset_base_color = Color(0.2, 0.23, 0.31);
-		preset_contrast = default_contrast;
-	} else if (preset == "Custom") {
 		accent_color = EDITOR_GET("interface/theme/accent_color");
 		base_color = EDITOR_GET("interface/theme/base_color");
 		contrast = EDITOR_GET("interface/theme/contrast");
@@ -1053,7 +1050,11 @@ Ref<Theme> create_editor_theme(const Ref<Theme> p_theme) {
 	// HScrollBar
 	Ref<Texture> empty_icon = memnew(ImageTexture);
 
+	if (enable_touchscreen_touch_area) {
+		theme->set_stylebox("scroll", "HScrollBar", make_line_stylebox(separator_color, 50));
+	} else {
 		theme->set_stylebox("scroll", "HScrollBar", make_stylebox(theme->get_icon("GuiScrollBg", "EditorIcons"), 5, 5, 5, 5, 0, 0, 0, 0));
+	}
 	theme->set_stylebox("scroll_focus", "HScrollBar", make_stylebox(theme->get_icon("GuiScrollBg", "EditorIcons"), 5, 5, 5, 5, 0, 0, 0, 0));
 	theme->set_stylebox("grabber", "HScrollBar", make_stylebox(theme->get_icon("GuiScrollGrabber", "EditorIcons"), 6, 6, 6, 6, 2, 2, 2, 2));
 	theme->set_stylebox("grabber_highlight", "HScrollBar", make_stylebox(theme->get_icon("GuiScrollGrabberHl", "EditorIcons"), 5, 5, 5, 5, 2, 2, 2, 2));
@@ -1067,7 +1068,11 @@ Ref<Theme> create_editor_theme(const Ref<Theme> p_theme) {
 	theme->set_icon("decrement_pressed", "HScrollBar", empty_icon);
 
 	// VScrollBar
+	if (enable_touchscreen_touch_area) {
+		theme->set_stylebox("scroll", "VScrollBar", make_line_stylebox(separator_color, 50, 1, 1, true));
+	} else {
 		theme->set_stylebox("scroll", "VScrollBar", make_stylebox(theme->get_icon("GuiScrollBg", "EditorIcons"), 5, 5, 5, 5, 0, 0, 0, 0));
+	}
 	theme->set_stylebox("scroll_focus", "VScrollBar", make_stylebox(theme->get_icon("GuiScrollBg", "EditorIcons"), 5, 5, 5, 5, 0, 0, 0, 0));
 	theme->set_stylebox("grabber", "VScrollBar", make_stylebox(theme->get_icon("GuiScrollGrabber", "EditorIcons"), 6, 6, 6, 6, 2, 2, 2, 2));
 	theme->set_stylebox("grabber_highlight", "VScrollBar", make_stylebox(theme->get_icon("GuiScrollGrabberHl", "EditorIcons"), 5, 5, 5, 5, 2, 2, 2, 2));

platform/android/java/nativeSrcsConfigs/CMakeLists.txt

@@ -18,4 +18,4 @@ target_include_directories(${PROJECT_NAME}
         ${GODOT_ROOT_DIR}
         ${GODOT_ROOT_DIR}/modules/gdnative/include)
 
-add_definitions(-DUNIX_ENABLED -DANDROID_ENABLED)
+add_definitions(-DUNIX_ENABLED -DANDROID_ENABLED -DTOOLS_ENABLED)

scene/resources/style_box.cpp

@@ -1016,7 +1016,7 @@ void StyleBoxLine::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::COLOR, "color"), "set_color", "get_color");
 	ADD_PROPERTY(PropertyInfo(Variant::REAL, "grow_begin", PROPERTY_HINT_RANGE, "-300,300,1"), "set_grow_begin", "get_grow_begin");
 	ADD_PROPERTY(PropertyInfo(Variant::REAL, "grow_end", PROPERTY_HINT_RANGE, "-300,300,1"), "set_grow_end", "get_grow_end");
-	ADD_PROPERTY(PropertyInfo(Variant::INT, "thickness", PROPERTY_HINT_RANGE, "0,10"), "set_thickness", "get_thickness");
+	ADD_PROPERTY(PropertyInfo(Variant::INT, "thickness", PROPERTY_HINT_RANGE, "0,100"), "set_thickness", "get_thickness");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "vertical"), "set_vertical", "is_vertical");
 }