[Complex Text Layouts] Refactor Font class, default themes and controls to use Text Server interface.

Implement interface mirroring.
Add TextLine and TextParagraph classes.
Handle UTF-16 input on macOS and Windows.

1 files changed, 31 insertions, 7 deletions

diff --git a/scene/gui/check_button.cpp b/scene/gui/check_button.cpp
index 790faeb4fd..e58f56a99b 100644
--- a/scene/gui/check_button.cpp
+++ b/scene/gui/check_button.cpp
@@ -61,19 +61,40 @@ Size2 CheckButton::get_minimum_size() const {
 }
 
 void CheckButton::_notification(int p_what) {
-	if (p_what == NOTIFICATION_THEME_CHANGED) {
-		_set_internal_margin(MARGIN_RIGHT, get_icon_size().width);
+	if ((p_what == NOTIFICATION_THEME_CHANGED) || (p_what == NOTIFICATION_LAYOUT_DIRECTION_CHANGED) || (p_what == NOTIFICATION_TRANSLATION_CHANGED)) {
+		if (is_layout_rtl()) {
+			_set_internal_margin(MARGIN_LEFT, get_icon_size().width);
+			_set_internal_margin(MARGIN_RIGHT, 0.f);
+		} else {
+			_set_internal_margin(MARGIN_LEFT, 0.f);
+			_set_internal_margin(MARGIN_RIGHT, get_icon_size().width);
+		}
 	} else if (p_what == NOTIFICATION_DRAW) {
 		RID ci = get_canvas_item();
+		bool rtl = is_layout_rtl();
 
-		Ref<Texture2D> on = Control::get_theme_icon(is_disabled() ? "on_disabled" : "on");
-		Ref<Texture2D> off = Control::get_theme_icon(is_disabled() ? "off_disabled" : "off");
+		Ref<Texture2D> on;
+		if (rtl) {
+			on = Control::get_theme_icon(is_disabled() ? "on_disabled_mirrored" : "on_mirrored");
+		} else {
+			on = Control::get_theme_icon(is_disabled() ? "on_disabled" : "on");
+		}
+		Ref<Texture2D> off;
+		if (rtl) {
+			off = Control::get_theme_icon(is_disabled() ? "off_disabled_mirrored" : "off_mirrored");
+		} else {
+			off = Control::get_theme_icon(is_disabled() ? "off_disabled" : "off");
+		}
 
 		Ref<StyleBox> sb = get_theme_stylebox("normal");
 		Vector2 ofs;
 		Size2 tex_size = get_icon_size();
 
-		ofs.x = get_size().width - (tex_size.width + sb->get_margin(MARGIN_RIGHT));
+		if (rtl) {
+			ofs.x = sb->get_margin(MARGIN_LEFT);
+		} else {
+			ofs.x = get_size().width - (tex_size.width + sb->get_margin(MARGIN_RIGHT));
+		}
 		ofs.y = (get_size().height - tex_size.height) / 2 + get_theme_constant("check_vadjust");
 
 		if (is_pressed()) {
@@ -87,8 +108,11 @@ void CheckButton::_notification(int p_what) {
 CheckButton::CheckButton() {
 	set_toggle_mode(true);
 	set_text_align(ALIGN_LEFT);
-
-	_set_internal_margin(MARGIN_RIGHT, get_icon_size().width);
+	if (is_layout_rtl()) {
+		_set_internal_margin(MARGIN_LEFT, get_icon_size().width);
+	} else {
+		_set_internal_margin(MARGIN_RIGHT, get_icon_size().width);
+	}
 }
 
 CheckButton::~CheckButton() {