Use more subtle indentation guides in the script editor

editor/code_editor.cpp

@@ -765,6 +765,7 @@ void CodeTextEditor::update_editor_settings() {
 	text_editor->set_indent_using_spaces(EditorSettings::get_singleton()->get("text_editor/indent/type"));
 	text_editor->set_indent_size(EditorSettings::get_singleton()->get("text_editor/indent/size"));
 	text_editor->set_auto_indent(EditorSettings::get_singleton()->get("text_editor/indent/auto_indent"));
+	text_editor->set_draw_indent_guides(EditorSettings::get_singleton()->get("text_editor/indent/draw_indent_guides"));
 	text_editor->set_draw_tabs(EditorSettings::get_singleton()->get("text_editor/indent/draw_tabs"));
 	text_editor->set_show_line_numbers(EditorSettings::get_singleton()->get("text_editor/line_numbers/show_line_numbers"));
 	text_editor->set_line_numbers_zero_padded(EditorSettings::get_singleton()->get("text_editor/line_numbers/line_numbers_zero_padded"));

editor/editor_settings.cpp

@@ -373,6 +373,7 @@ void EditorSettings::_load_defaults(Ref<ConfigFile> p_extra_config) {
 	hints["text_editor/indent/size"] = PropertyInfo(Variant::INT, "text_editor/indent/size", PROPERTY_HINT_RANGE, "1, 64, 1"); // size of 0 crashes.
 	_initial_set("text_editor/indent/auto_indent", true);
 	_initial_set("text_editor/indent/convert_indent_on_save", false);
+	_initial_set("text_editor/indent/draw_indent_guides", true);
 	_initial_set("text_editor/indent/draw_tabs", true);
 
 	_initial_set("text_editor/line_numbers/show_line_numbers", true);
@@ -586,8 +587,8 @@ void EditorSettings::_load_default_text_editor_theme() {
 	_initial_set("text_editor/highlighting/engine_type_color", Color::html("83d3ff"));
 	_initial_set("text_editor/highlighting/comment_color", Color::html("676767"));
 	_initial_set("text_editor/highlighting/string_color", Color::html("ef6ebe"));
-	_initial_set("text_editor/highlighting/background_color", dark_theme ? Color::html("3b000000") : Color::html("#323b4f"));
-	_initial_set("text_editor/highlighting/completion_background_color", Color::html("2C2A32"));
+	_initial_set("text_editor/highlighting/background_color", dark_theme ? Color::html("3b000000") : Color::html("323b4f"));
+	_initial_set("text_editor/highlighting/completion_background_color", Color::html("2c2a32"));
 	_initial_set("text_editor/highlighting/completion_selected_color", Color::html("434244"));
 	_initial_set("text_editor/highlighting/completion_existing_color", Color::html("21dfdfdf"));
 	_initial_set("text_editor/highlighting/completion_scroll_color", Color::html("ffffff"));
@@ -597,13 +598,14 @@ void EditorSettings::_load_default_text_editor_theme() {
 	_initial_set("text_editor/highlighting/safe_line_number_color", Color::html("99aac8aa"));
 	_initial_set("text_editor/highlighting/caret_color", Color::html("aaaaaa"));
 	_initial_set("text_editor/highlighting/caret_background_color", Color::html("000000"));
+	_initial_set("text_editor/highlighting/indent_guide_color", Color::html("50808080"));
 	_initial_set("text_editor/highlighting/text_selected_color", Color::html("000000"));
 	_initial_set("text_editor/highlighting/selection_color", Color::html("6ca9c2"));
 	_initial_set("text_editor/highlighting/brace_mismatch_color", Color(1, 0.2, 0.2));
 	_initial_set("text_editor/highlighting/current_line_color", Color(0.3, 0.5, 0.8, 0.15));
 	_initial_set("text_editor/highlighting/line_length_guideline_color", Color(0.3, 0.5, 0.8, 0.1));
 	_initial_set("text_editor/highlighting/word_highlighted_color", Color(0.8, 0.9, 0.9, 0.15));
-	_initial_set("text_editor/highlighting/number_color", Color::html("EB9532"));
+	_initial_set("text_editor/highlighting/number_color", Color::html("eb9532"));
 	_initial_set("text_editor/highlighting/function_color", Color::html("66a2ce"));
 	_initial_set("text_editor/highlighting/member_variable_color", Color::html("e64e59"));
 	_initial_set("text_editor/highlighting/mark_color", Color(1.0, 0.4, 0.4, 0.4));

editor/editor_themes.cpp

@@ -1089,6 +1089,7 @@ Ref<Theme> create_editor_theme(const Ref<Theme> p_theme) {
 	const Color safe_line_number_color = dim_color * Color(1, 1.2, 1, 1.5);
 	const Color caret_color = mono_color;
 	const Color caret_background_color = mono_color.inverted();
+	const Color indent_guide_color = alpha2;
 	const Color text_selected_color = dark_color_3;
 	const Color selection_color = alpha2;
 	const Color brace_mismatch_color = error_color;
@@ -1124,6 +1125,7 @@ Ref<Theme> create_editor_theme(const Ref<Theme> p_theme) {
 		setting->set_initial_value("text_editor/highlighting/safe_line_number_color", safe_line_number_color, true);
 		setting->set_initial_value("text_editor/highlighting/caret_color", caret_color, true);
 		setting->set_initial_value("text_editor/highlighting/caret_background_color", caret_background_color, true);
+		setting->set_initial_value("text_editor/highlighting/indent_guide_color", indent_guide_color, true);
 		setting->set_initial_value("text_editor/highlighting/text_selected_color", text_selected_color, true);
 		setting->set_initial_value("text_editor/highlighting/selection_color", selection_color, true);
 		setting->set_initial_value("text_editor/highlighting/brace_mismatch_color", brace_mismatch_color, true);

editor/plugins/script_text_editor.cpp

@@ -132,6 +132,7 @@ void ScriptTextEditor::_load_theme_settings() {
 	Color safe_line_number_color = EDITOR_GET("text_editor/highlighting/safe_line_number_color");
 	Color caret_color = EDITOR_GET("text_editor/highlighting/caret_color");
 	Color caret_background_color = EDITOR_GET("text_editor/highlighting/caret_background_color");
+	Color indent_guide_color = EDITOR_GET("text_editor/highlighting/indent_guide_color");
 	Color text_selected_color = EDITOR_GET("text_editor/highlighting/text_selected_color");
 	Color selection_color = EDITOR_GET("text_editor/highlighting/selection_color");
 	Color brace_mismatch_color = EDITOR_GET("text_editor/highlighting/brace_mismatch_color");
@@ -164,6 +165,7 @@ void ScriptTextEditor::_load_theme_settings() {
 	text_edit->add_color_override("safe_line_number_color", safe_line_number_color);
 	text_edit->add_color_override("caret_color", caret_color);
 	text_edit->add_color_override("caret_background_color", caret_background_color);
+	text_edit->add_color_override("indent_guide_color", indent_guide_color);
 	text_edit->add_color_override("font_selected_color", text_selected_color);
 	text_edit->add_color_override("selection_color", selection_color);
 	text_edit->add_color_override("brace_mismatch_color", brace_mismatch_color);

editor/plugins/shader_editor_plugin.cpp

@@ -71,6 +71,7 @@ void ShaderTextEditor::_load_theme_settings() {
 	Color line_number_color = EDITOR_GET("text_editor/highlighting/line_number_color");
 	Color caret_color = EDITOR_GET("text_editor/highlighting/caret_color");
 	Color caret_background_color = EDITOR_GET("text_editor/highlighting/caret_background_color");
+	Color indent_guide_color = EDITOR_GET("text_editor/highlighting/indent_guide_color");
 	Color text_selected_color = EDITOR_GET("text_editor/highlighting/text_selected_color");
 	Color selection_color = EDITOR_GET("text_editor/highlighting/selection_color");
 	Color brace_mismatch_color = EDITOR_GET("text_editor/highlighting/brace_mismatch_color");
@@ -102,6 +103,7 @@ void ShaderTextEditor::_load_theme_settings() {
 	get_text_edit()->add_color_override("line_number_color", line_number_color);
 	get_text_edit()->add_color_override("caret_color", caret_color);
 	get_text_edit()->add_color_override("caret_background_color", caret_background_color);
+	get_text_edit()->add_color_override("indent_guide_color", indent_guide_color);
 	get_text_edit()->add_color_override("font_selected_color", text_selected_color);
 	get_text_edit()->add_color_override("selection_color", selection_color);
 	get_text_edit()->add_color_override("brace_mismatch_color", brace_mismatch_color);
@@ -389,6 +391,7 @@ void ShaderEditor::_editor_settings_changed() {
 	shader_editor->get_text_edit()->set_indent_size(EditorSettings::get_singleton()->get("text_editor/indent/size"));
 	shader_editor->get_text_edit()->set_indent_using_spaces(EditorSettings::get_singleton()->get("text_editor/indent/type"));
 	shader_editor->get_text_edit()->set_auto_indent(EditorSettings::get_singleton()->get("text_editor/indent/auto_indent"));
+	shader_editor->get_text_edit()->set_draw_indent_guides(EditorSettings::get_singleton()->get("text_editor/indent/draw_indent_guides"));
 	shader_editor->get_text_edit()->set_draw_tabs(EditorSettings::get_singleton()->get("text_editor/indent/draw_tabs"));
 	shader_editor->get_text_edit()->set_show_line_numbers(EditorSettings::get_singleton()->get("text_editor/line_numbers/show_line_numbers"));
 	shader_editor->get_text_edit()->set_syntax_coloring(EditorSettings::get_singleton()->get("text_editor/highlighting/syntax_highlighting"));

editor/plugins/text_editor.cpp

@@ -81,6 +81,7 @@ void TextEditor::_load_theme_settings() {
 	Color line_number_color = EDITOR_GET("text_editor/highlighting/line_number_color");
 	Color caret_color = EDITOR_GET("text_editor/highlighting/caret_color");
 	Color caret_background_color = EDITOR_GET("text_editor/highlighting/caret_background_color");
+	Color indent_guide_color = EDITOR_GET("text_editor/highlighting/indent_guide_color");
 	Color text_selected_color = EDITOR_GET("text_editor/highlighting/text_selected_color");
 	Color selection_color = EDITOR_GET("text_editor/highlighting/selection_color");
 	Color brace_mismatch_color = EDITOR_GET("text_editor/highlighting/brace_mismatch_color");
@@ -112,6 +113,7 @@ void TextEditor::_load_theme_settings() {
 	text_edit->add_color_override("line_number_color", line_number_color);
 	text_edit->add_color_override("caret_color", caret_color);
 	text_edit->add_color_override("caret_background_color", caret_background_color);
+	text_edit->add_color_override("indent_guide_color", indent_guide_color);
 	text_edit->add_color_override("font_selected_color", text_selected_color);
 	text_edit->add_color_override("selection_color", selection_color);
 	text_edit->add_color_override("brace_mismatch_color", brace_mismatch_color);

scene/gui/text_edit.cpp

@@ -39,6 +39,7 @@
 
 #ifdef TOOLS_ENABLED
 #include "editor/editor_scale.h"
+#include "editor_settings.h"
 #endif
 
 #define TAB_PIXELS
@@ -923,6 +924,26 @@ void TextEdit::_notification(int p_what) {
 						}
 					}
 
+					int indent_level = get_indent_level(i);
+					if (draw_indent_guides && indent_level > 0) {
+#ifdef TOOLS_ENABLED
+						int indent_size = EditorSettings::get_singleton()->get("text_editor/indent/size");
+						float line_width = Math::round(EDSCALE);
+#else
+						int indent_size = 4;
+						float line_width = 1.0;
+#endif
+						int guides = 1 + (indent_level - 1) / indent_size;
+
+						for (int guide = 0; guide < guides; guide++) {
+							draw_line(
+									Point2(guide * indent_size * cache.font->get_char_size(' ').width + char_margin, ofs_y),
+									Point2(guide * indent_size * cache.font->get_char_size(' ').width + char_margin, ofs_y + get_row_height()),
+									cache.indent_guide_color,
+									line_width);
+						}
+					}
+
 					if (line_wrap_index == 0) {
 						// only do these if we are on the first wrapped part of a line
 
@@ -1179,9 +1200,14 @@ void TextEdit::_notification(int p_what) {
 							if (underlined) {
 								draw_rect(Rect2(char_ofs + char_margin + ofs_x, yofs + ascent + 2, w, 1), in_selection && override_selected_font_color ? cache.font_selected_color : color);
 							}
-						} else if (draw_tabs && str[j] == '\t') {
+						} else if (draw_tabs && (j > get_indent_level(i) || !draw_indent_guides) && str[j] == '\t') {
+							// If indent guides are enabled, only draw trailing or alignment tabs
+							// Otherwise, draw all tabs (including those used for indentation)
 							int yofs = (get_row_height() - cache.tab_icon->get_height()) / 2;
-							cache.tab_icon->draw(ci, Point2(char_ofs + char_margin + ofs_x, ofs_y + yofs), in_selection && override_selected_font_color ? cache.font_selected_color : color);
+							cache.tab_icon->draw(
+									ci,
+									Point2(char_ofs + char_margin + ofs_x, ofs_y + yofs),
+									in_selection && override_selected_font_color ? cache.font_selected_color : color);
 						}
 
 						char_ofs += char_w;
@@ -4324,6 +4350,7 @@ void TextEdit::_update_caches() {
 	cache.font = get_font("font");
 	cache.caret_color = get_color("caret_color");
 	cache.caret_background_color = get_color("caret_background_color");
+	cache.indent_guide_color = get_color("indent_guide_color");
 	cache.line_number_color = get_color("line_number_color");
 	cache.safe_line_number_color = get_color("safe_line_number_color");
 	cache.font_color = get_color("font_color");
@@ -5430,6 +5457,16 @@ int TextEdit::get_indent_size() {
 	return indent_size;
 }
 
+void TextEdit::set_draw_indent_guides(bool p_draw) {
+
+	draw_indent_guides = p_draw;
+}
+
+bool TextEdit::is_drawing_indent_guides() const {
+
+	return draw_indent_guides;
+}
+
 void TextEdit::set_draw_tabs(bool p_draw) {
 
 	draw_tabs = p_draw;

scene/gui/text_edit.h

@@ -167,6 +167,7 @@ private:
 		Color completion_font_color;
 		Color caret_color;
 		Color caret_background_color;
+		Color indent_guide_color;
 		Color line_number_color;
 		Color safe_line_number_color;
 		Color font_color;
@@ -277,6 +278,7 @@ private:
 	int wrap_right_offset;
 
 	bool setting_row;
+	bool draw_indent_guides;
 	bool draw_tabs;
 	bool override_selected_font_color;
 	bool cursor_changed_dirty;
@@ -591,6 +593,8 @@ public:
 	bool is_indent_using_spaces() const;
 	void set_indent_size(const int p_size);
 	int get_indent_size();
+	void set_draw_indent_guides(bool p_draw);
+	bool is_drawing_indent_guides() const;
 	void set_draw_tabs(bool p_draw);
 	bool is_drawing_tabs() const;
 	void set_override_selected_font_color(bool p_override_selected_font_color);