3 files changed, 40 insertions, 0 deletions

diff --git a/scene/gui/text_edit.cpp b/scene/gui/text_edit.cpp
index 9c6fa703fa..c77705f35f 100644
--- a/scene/gui/text_edit.cpp
+++ b/scene/gui/text_edit.cpp
@@ -988,6 +988,24 @@ void TextEdit::_notification(int p_what) {
 							draw_texture_rect(info_icon, Rect2(icon_pos, icon_size));
 						}
 
+						// draw execution marker
+						if (executing_line == line) {
+							if (draw_breakpoint_gutter) {
+								int icon_extra_size = 4;
+								int vertical_gap = (get_row_height() * 40) / 100;
+								int horizontal_gap = (cache.breakpoint_gutter_width * 30) / 100;
+								int marker_height = get_row_height() - (vertical_gap * 2) + icon_extra_size;
+								int marker_width = cache.breakpoint_gutter_width - (horizontal_gap * 2) + icon_extra_size;
+								cache.executing_icon->draw_rect(ci, Rect2(cache.style_normal->get_margin(MARGIN_LEFT) + horizontal_gap - 2 - icon_extra_size / 2, ofs_y + vertical_gap - icon_extra_size / 2, marker_width, marker_height), false, Color(cache.executing_line_color.r, cache.executing_line_color.g, cache.executing_line_color.b));
+							} else {
+#ifdef TOOLS_ENABLED
+								VisualServer::get_singleton()->canvas_item_add_rect(ci, Rect2(xmargin_beg + ofs_x, ofs_y + get_row_height() - EDSCALE, xmargin_end - xmargin_beg, EDSCALE), cache.executing_line_color);
+#else
+								VisualServer::get_singleton()->canvas_item_add_rect(ci, Rect2(xmargin_beg + ofs_x, ofs_y, xmargin_end - xmargin_beg, get_row_height()), cache.executing_line_color);
+#endif
+							}
+						}
+
 						// draw fold markers
 						if (draw_fold_gutter) {
 							int horizontal_gap = (cache.fold_gutter_width * 30) / 100;
@@ -4414,6 +4432,7 @@ void TextEdit::_update_caches() {
 	cache.current_line_color = get_color("current_line_color");
 	cache.line_length_guideline_color = get_color("line_length_guideline_color");
 	cache.breakpoint_color = get_color("breakpoint_color");
+	cache.executing_line_color = get_color("executing_line_color");
 	cache.code_folding_color = get_color("code_folding_color");
 	cache.brace_mismatch_color = get_color("brace_mismatch_color");
 	cache.word_highlighted_color = get_color("word_highlighted_color");
@@ -4431,6 +4450,7 @@ void TextEdit::_update_caches() {
 	cache.folded_icon = get_icon("folded");
 	cache.can_fold_icon = get_icon("fold");
 	cache.folded_eol_icon = get_icon("GuiEllipsis", "EditorIcons");
+	cache.executing_icon = get_icon("MainPlay", "EditorIcons");
 	text.set_font(cache.font);
 
 	if (syntax_highlighter) {
@@ -4996,6 +5016,17 @@ bool TextEdit::is_line_set_as_safe(int p_line) const {
 	return text.is_safe(p_line);
 }
 
+void TextEdit::set_executing_line(int p_line) {
+	ERR_FAIL_INDEX(p_line, text.size());
+	executing_line = p_line;
+	update();
+}
+
+void TextEdit::clear_executing_line() {
+	executing_line = -1;
+	update();
+}
+
 bool TextEdit::is_line_set_as_breakpoint(int p_line) const {
 
 	ERR_FAIL_INDEX_V(p_line, text.size(), false);
@@ -6481,6 +6512,8 @@ TextEdit::TextEdit() {
 	menu->add_item(RTR("Redo"), MENU_REDO, KEY_MASK_CMD | KEY_MASK_SHIFT | KEY_Z);
 	menu->connect("id_pressed", this, "menu_option");
 	first_draw = true;
+
+	executing_line = -1;
 }
 
 TextEdit::~TextEdit() {
diff --git a/scene/gui/text_edit.h b/scene/gui/text_edit.h
index e854032159..4badd85e07 100644
--- a/scene/gui/text_edit.h
+++ b/scene/gui/text_edit.h
@@ -166,6 +166,7 @@ private:
 		Ref<Texture> can_fold_icon;
 		Ref<Texture> folded_icon;
 		Ref<Texture> folded_eol_icon;
+		Ref<Texture> executing_icon;
 		Ref<StyleBox> style_normal;
 		Ref<StyleBox> style_focus;
 		Ref<StyleBox> style_readonly;
@@ -187,6 +188,7 @@ private:
 		Color selection_color;
 		Color mark_color;
 		Color breakpoint_color;
+		Color executing_line_color;
 		Color code_folding_color;
 		Color current_line_color;
 		Color line_length_guideline_color;
@@ -345,6 +347,8 @@ private:
 
 	bool context_menu_enabled;
 
+	int executing_line;
+
 	int get_visible_rows() const;
 	int get_total_visible_rows() const;
 
@@ -486,6 +490,8 @@ public:
 	void set_line_as_marked(int p_line, bool p_marked);
 	void set_line_as_breakpoint(int p_line, bool p_breakpoint);
 	bool is_line_set_as_breakpoint(int p_line) const;
+	void set_executing_line(int p_line);
+	void clear_executing_line();
 	void set_line_as_safe(int p_line, bool p_safe);
 	bool is_line_set_as_safe(int p_line) const;
 	void get_breakpoints(List<int> *p_breakpoints) const;
diff --git a/scene/resources/default_theme/default_theme.cpp b/scene/resources/default_theme/default_theme.cpp
index 5ae57fdb52..79d93113b3 100644
--- a/scene/resources/default_theme/default_theme.cpp
+++ b/scene/resources/default_theme/default_theme.cpp
@@ -439,6 +439,7 @@ void fill_default_theme(Ref<Theme> &theme, const Ref<Font> &default_font, const
 	theme->set_color("selection_color", "TextEdit", font_color_selection);
 	theme->set_color("mark_color", "TextEdit", Color(1.0, 0.4, 0.4, 0.4));
 	theme->set_color("breakpoint_color", "TextEdit", Color(0.8, 0.8, 0.4, 0.2));
+	theme->set_color("executing_line_color", "TextEdit", Color(0.2, 0.8, 0.2, 0.4));
 	theme->set_color("code_folding_color", "TextEdit", Color(0.8, 0.8, 0.8, 0.8));
 	theme->set_color("current_line_color", "TextEdit", Color(0.25, 0.25, 0.26, 0.8));
 	theme->set_color("caret_color", "TextEdit", control_font_color);