Merge pull request #28399 from YeldhamDev/textedit_expose_tab_fold

Expose 'TextEdit's tab drawing and folding to GDScript

doc/classes/TextEdit.xml

@@ -41,6 +41,7 @@
 			<argument index="0" name="line" type="int">
 			</argument>
 			<description>
+				Returns if the given line is foldable, that is, it has indented lines right below it.
 			</description>
 		</method>
 		<method name="clear_colors">
@@ -120,6 +121,7 @@
 			<return type="void">
 			</return>
 			<description>
+				Folds all lines that are possible to be folded (see [method can_fold]).
 			</description>
 		</method>
 		<method name="fold_line">
@@ -128,6 +130,7 @@
 			<argument index="0" name="line" type="int">
 			</argument>
 			<description>
+				Folds the given line, if possible (see [method can_fold]).
 			</description>
 		</method>
 		<method name="get_breakpoints" qualifiers="const">
@@ -165,6 +168,7 @@
 			<return type="PopupMenu">
 			</return>
 			<description>
+				Returns the [PopupMenu] of this [TextEdit]. By default, this menu is displayed when right-clicking on the [TextEdit].
 			</description>
 		</method>
 		<method name="get_selection_from_column" qualifiers="const">
@@ -231,6 +235,7 @@
 			<argument index="0" name="line" type="int">
 			</argument>
 			<description>
+				Returns if the given line is folded.
 			</description>
 		</method>
 		<method name="is_line_hidden" qualifiers="const">
@@ -346,6 +351,7 @@
 			<argument index="0" name="line" type="int">
 			</argument>
 			<description>
+				Unfolds the given line, if folded.
 			</description>
 		</method>
 		<method name="unhide_all_lines">
@@ -376,6 +382,12 @@
 		<member name="context_menu_enabled" type="bool" setter="set_context_menu_enabled" getter="is_context_menu_enabled">
 			If [code]true[/code], a right click displays the context menu.
 		</member>
+		<member name="draw_tabs" type="bool" setter="set_draw_tabs" getter="is_drawing_tabs">
+			If [code]true[/code], the "tab" character will have a visible representation.
+		</member>
+		<member name="fold_gutter" type="bool" setter="set_fold_gutter_enabled" getter="is_fold_gutter_enabled">
+			If [code]true[/code], the fold gutter is visible. This enables folding groups of indented lines.
+		</member>
 		<member name="hiding_enabled" type="int" setter="set_hiding_enabled" getter="is_hiding_enabled">
 		</member>
 		<member name="highlight_all_occurrences" type="bool" setter="set_highlight_all_occurrences" getter="is_highlight_all_occurrences_enabled">

editor/editor_themes.cpp

@@ -831,6 +831,8 @@ Ref<Theme> create_editor_theme(const Ref<Theme> p_theme) {
 	theme->set_stylebox("read_only", "TextEdit", style_widget_disabled);
 	theme->set_constant("side_margin", "TabContainer", 0);
 	theme->set_icon("tab", "TextEdit", theme->get_icon("GuiTab", "EditorIcons"));
+	theme->set_icon("folded", "TextEdit", theme->get_icon("GuiTreeArrowRight", "EditorIcons"));
+	theme->set_icon("fold", "TextEdit", theme->get_icon("GuiTreeArrowDown", "EditorIcons"));
 	theme->set_color("font_color", "TextEdit", font_color);
 	theme->set_color("caret_color", "TextEdit", font_color);
 	theme->set_color("selection_color", "TextEdit", font_color_selection);

scene/gui/text_edit.cpp

@@ -4428,8 +4428,8 @@ void TextEdit::_update_caches() {
 #endif
 	cache.row_height = cache.font->get_height() + cache.line_spacing;
 	cache.tab_icon = get_icon("tab");
-	cache.folded_icon = get_icon("GuiTreeArrowRight", "EditorIcons");
-	cache.can_fold_icon = get_icon("GuiTreeArrowDown", "EditorIcons");
+	cache.folded_icon = get_icon("folded");
+	cache.can_fold_icon = get_icon("fold");
 	cache.folded_eol_icon = get_icon("GuiEllipsis", "EditorIcons");
 	text.set_font(cache.font);
 
@@ -5541,6 +5541,7 @@ int TextEdit::get_indent_size() {
 void TextEdit::set_draw_tabs(bool p_draw) {
 
 	draw_tabs = p_draw;
+	update();
 }
 
 bool TextEdit::is_drawing_tabs() const {
@@ -6259,8 +6260,12 @@ void TextEdit::_bind_methods() {
 
 	ClassDB::bind_method(D_METHOD("set_show_line_numbers", "enable"), &TextEdit::set_show_line_numbers);
 	ClassDB::bind_method(D_METHOD("is_show_line_numbers_enabled"), &TextEdit::is_show_line_numbers_enabled);
+	ClassDB::bind_method(D_METHOD("set_draw_tabs"), &TextEdit::set_draw_tabs);
+	ClassDB::bind_method(D_METHOD("is_drawing_tabs"), &TextEdit::is_drawing_tabs);
 	ClassDB::bind_method(D_METHOD("set_breakpoint_gutter_enabled", "enable"), &TextEdit::set_breakpoint_gutter_enabled);
 	ClassDB::bind_method(D_METHOD("is_breakpoint_gutter_enabled"), &TextEdit::is_breakpoint_gutter_enabled);
+	ClassDB::bind_method(D_METHOD("set_draw_fold_gutter"), &TextEdit::set_draw_fold_gutter);
+	ClassDB::bind_method(D_METHOD("is_drawing_fold_gutter"), &TextEdit::is_drawing_fold_gutter);
 
 	ClassDB::bind_method(D_METHOD("set_hiding_enabled", "enable"), &TextEdit::set_hiding_enabled);
 	ClassDB::bind_method(D_METHOD("is_hiding_enabled"), &TextEdit::is_hiding_enabled);
@@ -6307,7 +6312,9 @@ void TextEdit::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "highlight_current_line"), "set_highlight_current_line", "is_highlight_current_line_enabled");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "syntax_highlighting"), "set_syntax_coloring", "is_syntax_coloring_enabled");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "show_line_numbers"), "set_show_line_numbers", "is_show_line_numbers_enabled");
+	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "draw_tabs"), "set_draw_tabs", "is_drawing_tabs");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "breakpoint_gutter"), "set_breakpoint_gutter_enabled", "is_breakpoint_gutter_enabled");
+	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "fold_gutter"), "set_draw_fold_gutter", "is_drawing_fold_gutter");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "highlight_all_occurrences"), "set_highlight_all_occurrences", "is_highlight_all_occurrences_enabled");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "override_selected_font_color"), "set_override_selected_font_color", "is_overriding_selected_font_color");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "context_menu_enabled"), "set_context_menu_enabled", "is_context_menu_enabled");

scene/resources/default_theme/default_theme.cpp

@@ -423,6 +423,8 @@ void fill_default_theme(Ref<Theme> &theme, const Ref<Font> &default_font, const
 	theme->set_stylebox("completion", "TextEdit", make_stylebox(tree_bg_png, 3, 3, 3, 3, 0, 0, 0, 0));
 
 	theme->set_icon("tab", "TextEdit", make_icon(tab_png));
+	theme->set_icon("folded", "TextEdit", make_icon(arrow_right_png));
+	theme->set_icon("fold", "TextEdit", make_icon(arrow_down_png));
 
 	theme->set_font("font", "TextEdit", default_font);