Add "disabled" icon for 'CheckButton'

editor/editor_themes.cpp

@@ -585,7 +585,9 @@ Ref<Theme> create_editor_theme(const Ref<Theme> p_theme) {
 	theme->set_stylebox("hover", "CheckButton", style_menu);
 
 	theme->set_icon("on", "CheckButton", theme->get_icon("GuiToggleOn", "EditorIcons"));
+	theme->set_icon("on_disabled", "CheckButton", theme->get_icon("GuiToggleOnDisabled", "EditorIcons"));
 	theme->set_icon("off", "CheckButton", theme->get_icon("GuiToggleOff", "EditorIcons"));
+	theme->set_icon("off_disabled", "CheckButton", theme->get_icon("GuiToggleOffDisabled", "EditorIcons"));
 
 	theme->set_color("font_color", "CheckButton", font_color);
 	theme->set_color("font_color_hover", "CheckButton", font_color_hl);

scene/gui/check_button.cpp

@@ -34,13 +34,15 @@
 #include "servers/visual_server.h"
 
 Size2 CheckButton::get_icon_size() const {
-	Ref<Texture> on = Control::get_icon("on");
-	Ref<Texture> off = Control::get_icon("off");
+
+	Ref<Texture> on = Control::get_icon(is_disabled() ? "on_disabled" : "on");
+	Ref<Texture> off = Control::get_icon(is_disabled() ? "off_disabled" : "off");
 	Size2 tex_size = Size2(0, 0);
 	if (!on.is_null())
 		tex_size = Size2(on->get_width(), on->get_height());
 	if (!off.is_null())
 		tex_size = Size2(MAX(tex_size.width, off->get_width()), MAX(tex_size.height, off->get_height()));
+
 	return tex_size;
 }
 
@@ -49,9 +51,8 @@ Size2 CheckButton::get_minimum_size() const {
 	Size2 minsize = Button::get_minimum_size();
 	Size2 tex_size = get_icon_size();
 	minsize.width += tex_size.width;
-	if (get_text().length() > 0) {
+	if (get_text().length() > 0)
 		minsize.width += get_constant("hseparation");
-	}
 	Ref<StyleBox> sb = get_stylebox("normal");
 	minsize.height = MAX(minsize.height, tex_size.height + sb->get_margin(MARGIN_TOP) + sb->get_margin(MARGIN_BOTTOM));
 
@@ -67,8 +68,8 @@ void CheckButton::_notification(int p_what) {
 
 		RID ci = get_canvas_item();
 
-		Ref<Texture> on = Control::get_icon("on");
-		Ref<Texture> off = Control::get_icon("off");
+		Ref<Texture> on = Control::get_icon(is_disabled() ? "on_disabled" : "on");
+		Ref<Texture> off = Control::get_icon(is_disabled() ? "off_disabled" : "off");
 
 		Ref<StyleBox> sb = get_stylebox("normal");
 		Vector2 ofs;

scene/resources/default_theme/default_theme.cpp

@@ -359,7 +359,9 @@ void fill_default_theme(Ref<Theme> &theme, const Ref<Font> &default_font, const
 	theme->set_stylebox("focus", "CheckButton", focus);
 
 	theme->set_icon("on", "CheckButton", make_icon(toggle_on_png));
+	theme->set_icon("on_disabled", "CheckButton", make_icon(toggle_on_disabled_png));
 	theme->set_icon("off", "CheckButton", make_icon(toggle_off_png));
+	theme->set_icon("off_disabled", "CheckButton", make_icon(toggle_off_disabled_png));
 
 	theme->set_font("font", "CheckButton", default_font);