Allow modification of the color for the checkbox's checked and unchecked icons

Occasionally, the default white color for the icon does not meet our needs, and we would like to change it. However, the CheckBox does not currently have a mechanism to modify this color.

doc/classes/CheckBox.xml

@@ -15,6 +15,12 @@
 		<member name="toggle_mode" type="bool" setter="set_toggle_mode" getter="is_toggle_mode" overrides="BaseButton" default="true" />
 	</members>
 	<theme_items>
+		<theme_item name="checkbox_checked_color" data_type="color" type="Color" default="Color(1, 1, 1, 1)">
+			The color of the checked icon when the checkbox is pressed.
+		</theme_item>
+		<theme_item name="checkbox_unchecked_color" data_type="color" type="Color" default="Color(1, 1, 1, 1)">
+			The color of the unchecked icon when the checkbox is not pressed.
+		</theme_item>
 		<theme_item name="check_v_offset" data_type="constant" type="int" default="0">
 			The vertical offset used when rendering the check icons (in pixels).
 		</theme_item>

doc/classes/CheckButton.xml

@@ -14,6 +14,12 @@
 		<member name="toggle_mode" type="bool" setter="set_toggle_mode" getter="is_toggle_mode" overrides="BaseButton" default="true" />
 	</members>
 	<theme_items>
+		<theme_item name="button_checked_color" data_type="color" type="Color" default="Color(1, 1, 1, 1)">
+			The color of the checked icon when the checkbox is pressed.
+		</theme_item>
+		<theme_item name="button_unchecked_color" data_type="color" type="Color" default="Color(1, 1, 1, 1)">
+			The color of the unchecked icon when the checkbox is not pressed.
+		</theme_item>
 		<theme_item name="check_v_offset" data_type="constant" type="int" default="0">
 			The vertical offset used when rendering the toggle icons (in pixels).
 		</theme_item>

scene/gui/check_box.cpp

@@ -127,9 +127,9 @@ void CheckBox::_notification(int p_what) {
 			ofs.y = int((get_size().height - get_icon_size().height) / 2) + theme_cache.check_v_offset;
 
 			if (is_pressed()) {
-				on_tex->draw_rect(ci, Rect2(ofs, _fit_icon_size(on_tex->get_size())));
+				on_tex->draw_rect(ci, Rect2(ofs, _fit_icon_size(on_tex->get_size())), false, theme_cache.checkbox_checked_color);
 			} else {
-				off_tex->draw_rect(ci, Rect2(ofs, _fit_icon_size(off_tex->get_size())));
+				off_tex->draw_rect(ci, Rect2(ofs, _fit_icon_size(off_tex->get_size())), false, theme_cache.checkbox_unchecked_color);
 			}
 		} break;
 	}
@@ -152,6 +152,9 @@ void CheckBox::_bind_methods() {
 	BIND_THEME_ITEM(Theme::DATA_TYPE_ICON, CheckBox, unchecked_disabled);
 	BIND_THEME_ITEM(Theme::DATA_TYPE_ICON, CheckBox, radio_checked_disabled);
 	BIND_THEME_ITEM(Theme::DATA_TYPE_ICON, CheckBox, radio_unchecked_disabled);
+
+	BIND_THEME_ITEM(Theme::DATA_TYPE_COLOR, CheckBox, checkbox_checked_color);
+	BIND_THEME_ITEM(Theme::DATA_TYPE_COLOR, CheckBox, checkbox_unchecked_color);
 }
 
 CheckBox::CheckBox(const String &p_text) :

scene/gui/check_box.h

@@ -49,6 +49,9 @@ class CheckBox : public Button {
 		Ref<Texture2D> unchecked_disabled;
 		Ref<Texture2D> radio_checked_disabled;
 		Ref<Texture2D> radio_unchecked_disabled;
+
+		Color checkbox_checked_color;
+		Color checkbox_unchecked_color;
 	} theme_cache;
 
 protected:

scene/gui/check_button.cpp

@@ -134,9 +134,9 @@ void CheckButton::_notification(int p_what) {
 			ofs.y = (get_size().height - tex_size.height) / 2 + theme_cache.check_v_offset;
 
 			if (is_pressed()) {
-				on_tex->draw_rect(ci, Rect2(ofs, _fit_icon_size(on_tex->get_size())));
+				on_tex->draw_rect(ci, Rect2(ofs, _fit_icon_size(on_tex->get_size())), false, theme_cache.button_checked_color);
 			} else {
-				off_tex->draw_rect(ci, Rect2(ofs, _fit_icon_size(off_tex->get_size())));
+				off_tex->draw_rect(ci, Rect2(ofs, _fit_icon_size(off_tex->get_size())), false, theme_cache.button_unchecked_color);
 			}
 		} break;
 	}
@@ -155,6 +155,9 @@ void CheckButton::_bind_methods() {
 	BIND_THEME_ITEM(Theme::DATA_TYPE_ICON, CheckButton, unchecked_mirrored);
 	BIND_THEME_ITEM(Theme::DATA_TYPE_ICON, CheckButton, checked_disabled_mirrored);
 	BIND_THEME_ITEM(Theme::DATA_TYPE_ICON, CheckButton, unchecked_disabled_mirrored);
+
+	BIND_THEME_ITEM(Theme::DATA_TYPE_COLOR, CheckButton, button_checked_color);
+	BIND_THEME_ITEM(Theme::DATA_TYPE_COLOR, CheckButton, button_unchecked_color);
 }
 
 CheckButton::CheckButton(const String &p_text) :

scene/gui/check_button.h

@@ -49,6 +49,9 @@ class CheckButton : public Button {
 		Ref<Texture2D> unchecked_mirrored;
 		Ref<Texture2D> checked_disabled_mirrored;
 		Ref<Texture2D> unchecked_disabled_mirrored;
+
+		Color button_checked_color;
+		Color button_unchecked_color;
 	} theme_cache;
 
 protected:

scene/theme/default_theme.cpp

@@ -326,6 +326,9 @@ void fill_default_theme(Ref<Theme> &theme, const Ref<Font> &default_font, const
 	theme->set_constant("check_v_offset", "CheckBox", 0);
 	theme->set_constant("outline_size", "CheckBox", 0);
 
+	theme->set_color("checkbox_checked_color", "CheckBox", Color(1, 1, 1));
+	theme->set_color("checkbox_unchecked_color", "CheckBox", Color(1, 1, 1));
+
 	// CheckButton
 
 	Ref<StyleBox> cb_empty = memnew(StyleBoxEmpty);
@@ -363,6 +366,9 @@ void fill_default_theme(Ref<Theme> &theme, const Ref<Font> &default_font, const
 	theme->set_constant("check_v_offset", "CheckButton", 0);
 	theme->set_constant("outline_size", "CheckButton", 0);
 
+	theme->set_color("button_checked_color", "CheckButton", Color(1, 1, 1));
+	theme->set_color("button_unchecked_color", "CheckButton", Color(1, 1, 1));
+
 	// Button variations
 
 	theme->set_type_variation(SceneStringName(FlatButton), "Button");